Method and device for receiving control information in wireless communication system

The present invention according to one embodiment relates to a method for enabling a terminal to receive control information in a wireless communication system, and the method for receiving the control information comprises the step of attempting to decode a set of enhanced physical downlink control channel (EPDCCH) candidates according to each set level, wherein a minimum value among the values available as the set levels is set according to the amount of available resources for an EPDCCH within a physical resource block (PRB) pair that is attempting to decode.

Method for transmitting and receiving downlink signal in wireless communication system and device for same

The present invention relates to a method and a device for receiving a downlink signal by a terminal in a wireless communication system using a time division duplex (TDD) scheme. Specifically, the present invention comprises the steps of: receiving a usage change message indicating a change from a first uplink-downlink configuration to a second uplink-downlink configuration; with regard to a specific subframe, when a wireless frame type according to the first uplink-downlink configuration is different from a wireless frame type according to the second uplink-downlink configuration, determining a subframe type on the basis of a special subframe configuration associated with the first uplink-downlink configuration; and receiving a downlink signal on the basis of the determined subframe type.

Method and apparatus for transmitting reference signal in multiple antenna supporting wireless communication system

The present invention discloses a method and an apparatus for transmitting a reference signal in a wireless communication system. More specifically, the method comprises configuring a first antenna group on the basis of a plurality of antenna elements configured by a horizontal domain antenna element and a vertical domain antenna element; transmitting a configuration with regard to a specific sub frame to first terminals through a first antenna group; receiving a sounding reference signal (SRS) through the specific sub frame from the first terminals; selecting at least one second terminal among the first terminals on the basis of the sounding reference signal; and transmitting a channel state information-reference signal (CSI-RS) with respect to the at least one second terminal, wherein the specific sub frame is characterized in that at least a part of a source area is configured by a multicast broadcast single frequency network (MBSFN) sub frame.

Method and apparatus for measurement for inter-cell interference coordination in radio communication system

A user equipment, base station and method for performing a measurement in a wireless communication system are discussed. The method according to one embodiment includes receiving, from a first base station, information indicating a resource region for performing the measurement; performing the measurement for the resource region; and transmitting, to the first base station, a report for the measurement. The resource region is determined as a combination of at least one orthogonal frequency division multiplexing (OFDM) symbol and at least one downlink subframe.

Method and apparatus for receiving control information through blind decoding of an enhanced physical downlink control channel (EPDCCH)

One embodiment of the present invention provides a method for enabling a terminal to receive control information in a wireless communication system, comprising the steps of: determining resource units for Enhanced Physical Downlink Control Channel (EPDCCH) of a plurality of resource units, with respect to each of one or more resource sets; and blind-decoding the resource units for the EPDCCH with respect to each of the one or more resource sets, wherein each of the one or more resource sets is set for one of localized EPDCCH transmission or distributed EPCCH transmission.

METHOD FOR SETTING REFERENCE SIGNAL FOR V2V COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM AND DEVICE FOR SAME

The present invention relates to a method and a device for receiving a reference signal of a first vehicle-to-vehicle (V2V) device for V2V communication in a wireless communication system. Particularly, the present invention comprises the steps of: receiving a reference signal configuration defined for the offset correction of a center frequency for V2V communication; and decoding a reference signal defined according to the reference signal configuration in a specific resource region, wherein the reference signal configuration is set such that a time interval between orthogonal frequency division multiple access (OFDM) symbol indexes, to which the reference signal is allocated, has a pre-defined size.

Method for receiving synchronization information for direct communication between user equipment and apparatus for same

Disclosed is a method by which first user equipment receives synchronization information for a Device-to-Device (D2D) link at a user equipment (UE) in a wireless communication system. Specifically, the method comprises: receiving configuration information for synchronization from serving cell; and acquiring information on reference cell for synchronization of the D2D link based on the configuration information; and acquiring a synchronization resource based on the information on reference cell, wherein the information on reference cell comprises an identifier of the reference cell.

Method for transmitting or receiving signal in wireless communication system and apparatus therefor

According to one embodiment of the present invention, a method of receiving DCI by a UE includes receiving bundling information regarding REGs via higher layer signaling, performing blind detection for a PDCCH in a CORESET configured on a plurality of OFDM symbols, and acquiring DCI from the PDCCH. When the bundling information indicates a first value, the UE may perform bundling such that only REGs locating on a same RB and corresponding to different OFDM symbols in the CORESET, are bundled as 1 REG bundle, and when the bundling information indicates a second value, the UE may perform bundling such that the REGs locating on the same RB and corresponding to the different OFDM symbols are bundled as 1 REG bundle along with REGs locating on different RBs in the CORESET, and the UE may perform the blind detection of the PDCCH by assuming same precoding for REGs belonging to a same REG bundle as a result of REG bundling.

METHOD AND DEVICE FOR TRANSMITTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a method for allowing a terminal to transmit cone or more pieces of channel state information (CSI) in a wireless communication system, and the method for transmitting the CSI comprises the steps of: determining CSI reference resources from a subframe which is to transmit the one or more pieces of CSI; and transmitting the one or more pieces of CSI measured in the CSI reference resources wherein the determination of the CSI reference resources uses measurement sets which include one or more interference measurement sets and one or more signal measurement sets, and if the CSI reference resources are included in an overlapping manner in two or more of the one or more interference measurement sets and the one or more signal measurement sets, a resource for measuring interference or a signal is separated within the CSI reference resources.

Method by which terminal monitors control channel in wireless communication system, and terminal using method

A method by which a terminal monitors a control channel in a wireless communication system, and a device using the method are provided. The method determines whether physical downlink control channel (PDCCH) monitoring occasions overlap in a plurality of control resource sets (CORESETs), selects at least one CORESET from among the plurality of CORESETs when the PDCCH monitoring occasions overlap, and monitors a PDCCH only in the selected at least one CORESET from among the plurality of CORESETs.

Method of determining slot format in wireless communication system and apparatus therefor

A method performed by a user equipment (UE) in a wireless communication system, where the method includes: receiving, through higher layer signaling, uplink (UL)/downlink (DL) resource configuration including information regarding a first UL/DL resource pattern; determining, based on the received UL/DL resource configuration, the first UL/DL resource pattern that is applicable over a first configuration period; and based on the received UL/DL resource configuration also including information regarding a second UL/DL resource pattern: determining the second UL/DL resource pattern that is applicable over a second configuration period, wherein the first configuration period and the second configuration period are restricted to values such that an integer multiple of a sum of the first configuration period and the second configuration period is time-aligned with a 20 ms time duration.

Method for transmitting or receiving signal in wireless communication system and apparatus therefor

A method for receiving, by a terminal, downlink control information in a wireless communication system according to one embodiment of the present invention comprises the steps of: receiving information on a reference subcarrier spacing (SCS) from among a plurality of SCS numerologies; receiving downlink control information through a terminal group common physical downlink control channel (PDCCH); and obtaining information on a slot format from the downlink control information, wherein the downlink control information indicates the slot format on the basis of the reference SCS, and when the SCS of the terminal is different from the reference SCS, the terminal may convert the slot format of the reference SCS according to the SCS of the terminal.

Method for operating bandwidth part

The present disclosure provides a method by which a terminal, in which a primary cell and a secondary cell are set, activate a bandwidth part (BWP) in a wireless communication system, comprising: receiving downlink control information (DCI) from a network, the DCI notifying the terminal of the separation of the secondary cell from the dormant BWP; and activating a specific BWP of the secondary cell on the basis of the DCI, the specific BWP being a BWP set by upper layer signaling received through the terminal.

Method and apparatus for transmitting and receiving signal for device-to-device terminal in wireless communication system

Method for transmitting and receiving channel state information (CSI) in wireless communication system, and apparatus therefor

A method for transmitting and receiving channel state information (CSI) in a wireless communication system, and an apparatus therefor are disclosed. Specifically, a method for a terminal transmitting CSI in a wireless communication system supporting multi-user superposition transmission (MUST) may comprise the steps of: reporting to a base station a first precoding matrix indicator (PMI) indicating a precoding matrix that is the most preferred by the terminal, and a first channel quality indicator (CQI) that is calculated assuming use of the first PMI; and reporting to the base station a second PMI indicating a precoding matrix that is secondly preferred by the terminal, and a second CQI that is calculated assuming use of the second PMI.

Method for transmitting and receiving data in wireless communication system and device for same

A method for a terminal to receive a data channel in a wireless communication system includes: a step for receiving control resource setting information based on a first control resource set group and a second control resource set group; a step for receiving information about a cell reference signal pattern related to one among the first control resource set group and the second control resource set group; and a step for receiving a first data channel related to the first control resource set group and a second data channel related to the second control resource set group, wherein symbol positions of a first demodulation reference signal of the first data channel and a second demodulation reference signal of the second data channel may be determined on the basis of the cell reference signal pattern.

Method for controlling power for device-to-device (D2D) communication in wireless communication system and apparatus for same

A method for a terminal controlling power in a wireless communication system, according to the present invention, comprises the steps of: receiving from a base station power setting information on the difference in power setting values between a first channel for eNodeB-to-device (eNB2D) communication, and a second channel for device-to-device (D2D) communication; and controlling the power of the first channel and/or the second channel in accordance with the power setting information, wherein the power is controlled in accordance with a predetermined priority, which is based on a plurality of channels and a plurality of transmitted data items, which are different from each other are simultaneously transmitted by the terminal at a specific time.

Method and apparatus for performing handover in wireless communication system

The present invention relates to a method for a terminal performing a handover in a wireless communication system, comprising a step of receiving from a first transmission point, information required for performing the handover to a second transmission point, wherein the information required for performing the handover includes information related to a system frame of the second transmission point.

Method and apparatus for measuring channel status in wireless communication system supporting reconfiguration of usage of radio resource

The present invention relates to a method and apparatus for measuring channel status information on a terminal in a wireless communication system that supports the change of usage of a radio resource. In particular, the method includes the steps of: receiving a change of usage message for a dynamic change in the usage of a radio resource; and measuring channel status information (CSI) from a CSI reference resource, wherein the CSI reference resource is arranged on a time section at which a usage of a radio resource is determined by the change of usage message, and determined based on only an uplink-downlink setting on a system information block (SIB) when the reception of the change of usage message is unsuccessful.

Method and apparatus for enhanced control channel-based operation in wireless communication system

The present invention relates to a wireless communication system, and more specifically, to a method and an apparatus for enhanced control channel-based operation. A method for a base station for transmitting a downlink control channel in a wireless communication system according to one embodiment of the present invention comprises the steps of: determining one antenna port to be used for the downlink control channel; mapping the downlink control channel to a resource element on the basis of a reference signal for the one antenna port; and transmitting the mapped downlink control channel to a terminal, wherein an index for the one antenna port can be determined on the basis of a control channel element (CCE) index of the downlink control channel derived from the terminal identifier.

Method for UE cancelling interference from neighbouring cells in wireless communication system and apparatus therefor

In this application, a method for a terminal cancelling interference from a neighboring cell is disclosed. More specifically, the method comprises the steps of: receiving one or more interference cancellation assistance information indicating one of a plurality of parameter combinations for detecting an interference signal from the neighboring cell; detecting an interference signal from the neighboring cell, based on the one or more interference cancellation assistance information and cancelling the interference signal in signals received from a serving cell, wherein the interference signal is a downlink data channel of the neighboring cell or a downlink control channel of the neighboring cell, and the plurality of parameter combinations is configured through a higher layer.

METHOD FOR TRANSMITTING AND RECEIVING DOWNLINK CHANNEL AND DEVICE THEREFOR

The present invention discloses a method for receiving, by means of a terminal, a downlink channel in a wireless communication system. In particular, the method may receive information about a plurality of component carriers, transmit information related to power consumption of a component carrier group including at least one first component carrier among the plurality of component carriers, and receive a downlink channel through at least one second component carrier activated on the basis of the information related to power consumption.

Method and apparatus for sharing spectrum between 3GPP LTE and NR in wireless communication system

A method and apparatus for transmitting a physical random access channel (PRACH) in a wireless communication system is provided. A user equipment (UE) receives multiple PRACH configurations which include a first PRACH configuration for new radio access technology (NR) downlink/uplink (DL/UL) carrier in a NR band and a second PRACH configuration for a supplemental UL carrier in a long-term evolution (LTE) band, and transmits at least one of a first PRACH for accessing the NR DL/UL carrier in the NL band by using a first PRACH power based on the first PRACH configuration, or a second PRACH for accessing the supplemental UL carrier in the LTE band by using a second PRACH power based on the second PRACH configuration. The first PRACH configuration and the second PRACH configuration include different PRACH power configuration.

Method of performing resource specific channel estimation in heterogeneous network system and apparatus thereof

A method for performing resource specific channel estimation at a user equipment in a wireless communication system is disclosed. The method includes receiving one or more reference signals in a specific subframe from a serving cell, and performing channel estimation for a control region of a corresponding downlink subframe, based on the one or more reference signals. The channel estimation for the control region is performed based on one or more reference signals included in a data region of the corresponding downlink subframe.

Method of performing measurement at UE in wireless communication system and apparatus thereof

A method of performing measurement at a user equipment (UE) in a wireless communication system is disclosed. The method includes receiving channel status information-reference signals (CSI-RSs) for channel status information feedback from a plurality of transmission points (TPs), performing radio resource management (RRM) measurement based on the CSI-RSs, and selecting one or more TPs for receiving a signal from among the plurality of TPs based on the result of measurement.

Method for transmitting/receiving signal in wireless communication system, and device therefor

A method, according to one embodiment of the present invention, may comprise a configuration whereby a base station, which has received, from another base station, a message including information associated with the another base station, communicates with a terminal on a specific frequency band on the basis of the information associated with the another base station. Here, the specific frequency band may be: a frequency band included in a frequency band used by the another base station; or a frequency band adjacent to the frequency band used by the another base station.

METHOD AND APPARATUS FOR MONITORING A WIRELESS LINK IN A WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system, and more particularly to a method and apparatus for monitoring a wireless link. A method for monitoring a wireless link by a terminal in a wireless communication system according to one embodiment of the present invention comprises the steps of: receiving a precoded control channel; and estimating the quality of the wireless link for the received precoded control channel, wherein the quality of the wireless link can be estimated on the basis of an assumption by the terminal regarding the precoding applied to the precoded control channel. 1. A method for performing radio link monitoring (RLM) by a user equipment (UE) in a wireless communication system , the method comprising:receiving a precoded control channel; andestimating a radio link quality of the received precoded control channel,wherein the radio link quality is estimated on the basis of UE assumption associated with precoding applied to the precoded control channel.2. The method according to claim 1 , wherein:the UE assumption indicates that a precoding matrix optimal for a downlink (DL) channel estimated by the UE is applied to the precoded control channel.3. The method according to claim 2 , wherein the downlink (DL) channel is estimated from a Channel State Information—Reference Signal (CSI-RS) or a cell-specific reference signal (RS).4. The method according to claim 2 , wherein the optimal precoding matrix corresponds to a Precoding Matrix Indicator (PMI) reported from the UE to a base station (BS).5. The method according to claim 1 , wherein the UE assumption indicates that a precoding matrix randomly selected from a predetermined codebook is applied to the precoded control channel.6. The method according to claim 5 , wherein a transmission (Tx) rank defined in the predetermined codebook is equal to or less than a transmission (Tx) rank of the precoded control channel.7. The method according to claim 1 , wherein the UE assumption ...

METHOD AND DEVICE FOR DECODING SIGNAL IN WIRELESS COMMUNICATION SYSTEM

One embodiment of the present invention relates to a method for allowing a terminal to decode a signal in a wireless communication system, and the method for decoding the signal comprises the steps of determining a spreading factor for a physical resource block pair included in a subframe; and decoding a decoding reference signal on said physical resource block pair by using an orthogonal sequence corresponding to said spreading factor.

Method for transmitting and receiving signal in wireless communications system and apparatus therefor

According to an embodiment of the present invention, a method for transmitting and receiving a signal in a wireless communications system includes the steps of: transmitting an uplink data in a first subframe to a base station; and receiving a reception confirmation response to the uplink data on a downlink time-frequency resource of a second subframe associated with the first subframe, wherein if the second subframe transmits a shortened DMRS (Demodulation Reference Signal), the downlink time-frequency resource is included in at least a part of REs (Resource Elements) adjacent to the RE (Resource Element) transmitting the shortened DMRS, and the RE transmitting the shortened DMRS is the cell specified one of the REs capable of being reserved for the DMRS.

Method for allocating resources for downlink control channel in wireless communication system and device for same

A method for allocating resources for a downlink control channel by a base station in a wireless communication system is disclosed. Specifically, the method comprises the steps of: mapping resource elements to resource element groups for each of resource blocks; forming control channel elements by using a predetermined number of resource element groups from among the resource element groups; and allocating control channel elements of a number corresponding to an aggregation level of the downlink control channel as resources for the downlink control channel, wherein the number of available resource elements included in each of the resource element groups or the number of available resource elements included in each of the control channel elements of a number corresponding to the aggregation level is uniform.

METHOD OF PERFORMING RESOURCE SPECIFIC CHANNEL ESTIMATION IN HETEROGENEOUS NETWORK SYSTEM AND APPARATUS THEREOF

A method for performing resource specific channel estimation at a user equipment in a wireless communication system is disclosed. The method includes receiving one or more reference signals in a specific subframe from a serving cell, and performing channel estimation for a control region of a corresponding downlink subframe, based on the one or more reference signals. The channel estimation for the control region is performed based on one or more reference signals included in a data region of the corresponding downlink subframe. 1. A method for performing resource specific channel estimation at a user equipment in a wireless communication system , comprising:receiving one or more RSs in a specific subframe from a serving cell; andperforming channel estimation for a control region of a corresponding downlink subframe, based on the one or more RSs,wherein the channel estimation for the control region is performed based on one or more reference signals included in a data region of the corresponding downlink subframe.2. The method according to claim 1 , further comprising:receiving resource specific channel estimation related information from the serving cell which is an interfered cell,wherein resource specific channel estimation related information includes at least one of information about an Almost Blank Subframe (ABS) designated by an interfering cell, information about whether Multicast Broadcast Single Frequency Network (MBSFN) configuration is applied to the ABS, and information about whether the resource specific channel estimation is performed.3. The method according to claim 1 , wherein a reference signal transmitted through a control region of a downlink subframe corresponding to the serving cell which is an interfered cell and a reference signal transmitted through a control region of a downlink subframe corresponding to an interfering cell are mapped to the same resource element.4. The method according to claim 1 , wherein a difference between a cell ID of ...

Method and device for sending and receiving signals in wireless communication system

An embodiment of the present invention concerns a method whereby a base station transmits signals in a wireless communication system. The signal transmission method which comprises a step of transmitting a downlink signal in a first subframe set for uplink use, wherein the transmission timing of the first subframe is determined by means of a second subframe that precedes the first subframe, and a time value for a terminal receiving the first subframe is used in the second subframe.

Method and device for transmitting and receiving downlink control channel for controlling inter-cell interference in wireless communication system

The present invention relates to a wireless communication system, and more particularly, to a method and device for transmitting and receiving a downlink control channel for controlling inter-cell interference in a wireless communication system. An embodiment of the present invention provides a method for transmitting a downlink control channel from a base station to a terminal, and the method may comprise: a step of determining whether a downlink subframe is of a first type or a second type; and a step in which if the downlink subframe is of the first type, the number of OFDM symbols for transmitting the downlink control channel is set to a preset value (N), and the downlink control channel is transmitted using N OFDM symbols.

Method and apparatus for transmitting a control channel and a data channel in a wireless communication system

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting a control channel in a wireless communication system that supports multi-cell cooperative communication. According to the present invention, a scheme for protecting a control channel and a data channel of one cell from interference caused by another cell is provided.

Discontinuous reception operation method

The present specification proposes a discontinuous reception operation method characterized by: in a wireless communication system, a terminal in which a plurality of cells are configured performing a physical downlink control channel (PDCCH) monitoring on-duration; receiving bandwidth part (BWP) setting information, wherein the BWP setting information informs a specific BWP; receiving a PDCCH on the basis of the PDCCH monitoring, wherein the PDCCH includes dormant indication information for a specific cell from among the plurality of cells of the terminal; and activating the specific BWP on the basis of the dormant indication information indicating non-dormancy.

Method for transmitting or receiving downlink signal in wireless communication system, and apparatus therefor

The method, according to one embodiment of the present invention, by which in a wireless communication system a base station transmits signals to a plurality of terminals on the basis of non-orthogonal multiple access (NOMA), comprises the steps of: mapping first information bits for a first terminal and second information bits for a second terminal onto a first layer for the NOMA; modulating the first information bits and the second information bits which have been mapped on the first layer; and transmitting modulation symbols, which have been generated as a result of the modulation, to the first terminal and the second terminal, wherein the base station may map the first information bits and the second information bits onto the first layer, at a bit level before the modulation symbols have been generated.

METHOD OF CONTROLLING UPLINK TRANSMISSION POWER AT UE IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREOF

A method of determining uplink transmission power at a user equipment (UE) in a wireless communication system is disclosed. The method includes receiving channel status information-reference signal (CSI-RS) settings and downlink transmission power values for a plurality of transmission points (TPs) from a higher layer, receiving CSI-RSs from the plurality of TPs, estimating path loss values corresponding to the plurality of TPs based on the received CSI-RSs, determining the uplink transmission power using the estimated path loss values, and transmitting an uplink signal to one or more of the plurality of TPs based upon the determined uplink transmission power. 1. A method of determining uplink transmission power at a user equipment (UE) in a wireless communication system , the method comprising:receiving channel status information-reference signal (CSI-RS) settings and downlink transmission power values for a plurality of transmission points (TPs) from a higher layer;receiving CSI-RSs from the plurality of TPs;estimating path loss values corresponding to the plurality of TPs based on the received CSI-RSs;determining the uplink transmission power using the estimated path loss values; andtransmitting an uplink signal to one or more of the plurality of TPs based upon the determined uplink transmission power.2. The method according to claim 1 , wherein the CSI-RSs for the plurality of TPs are defined by different antenna ports.3. The method according to claim 2 , wherein the downlink transmission power values for the plurality of transmission points correspond to the defined antenna ports.4. The method according to claim 1 , wherein the determining the uplink transmission power includes determining the uplink transmission power according to a smallest path loss value among the estimated path loss values.5. The method according to claim 1 , wherein determining the uplink transmission power includes determining the uplink transmission power according to an average of the ...

Method for synchronization signal transmission in wireless communication system

An embodiment of the present invention relates to a method for transmitting a synchronization signal in a wireless communication system, the method comprising the steps of: generating a synchronization signal on the basis of a cell ID which is determined depending on whether a terminal for transmitting the synchronization signal is a terminal located outside of a coverage; and transmitting the synchronization signal.

Method for transmitting or receiving signal in wireless communication system and apparatus therefor

According to one embodiment of the present invention, a method of receiving DCI by a UE includes receiving bundling information regarding REGs via higher layer signaling, performing blind detection for a PDCCH in a CORESET configured on a plurality of OFDM symbols, and acquiring DCI from the PDCCH. When the bundling information indicates a first value, the UE may perform bundling such that only REGs locating on a same RB and corresponding to different OFDM symbols in the CORESET, are bundled as 1 REG bundle, and when the bundling information indicates a second value, the UE may perform bundling such that the REGs locating on the same RB and corresponding to the different OFDM symbols are bundled as 1 REG bundle along with REGs locating on different RBs in the CORESET, and the UE may perform the blind detection of the PDCCH by assuming same precoding for REGs belonging to a same REG bundle as a result of REG bundling.

Method for monitoring physical downlink control channel of terminal in wireless communication system, and device using same method

Provided are a method and device for monitoring a downlink control channel of a terminal in a wireless communication system. The terminal receives configuration information which informs of the position of an SSB or configuration information which informs of the position of an LTE CRS, and receives configuration information which informs of a monitoring occasion for detecting a wake up signal (WUS). If first PDCCH monitoring for detecting the wake up signal is not required since a resource of the monitoring occasion overlaps with a resource of the SSB and/or a resource of the LTE CRS, the terminal performs second PDCCH monitoring in a next discontinuous reception (DRX)-on duration.

Method and device for transmission/reception based on time unit group in wireless communication system

Disclosed are a method and a device for performing transmission/reception on the basis of a time unit group in a wireless communication system. According to one embodiment of the present disclosure, a method by which a terminal receives a downlink channel in a wireless communication system comprises the steps of: receiving configuration information about a slot group; monitoring a downlink control channel in one or more search space (SS) sets on the basis of the slot group; and receiving downlink control information (DCI) in the downlink control channel, wherein one or more from among the period, the offset and the duration of the SS sets can be set on the basis of granularity M (M is an integer greater than 1) of the slot group.

Method and apparatus for taking measurements on neighboring cells in wireless communication systems

The present invention relates to a method by which a terminal takes measures on a neighboring cell in a wireless communication system, which includes the steps of: receiving a channel state information-reference signal (CSI-RS) transmitted from the neighboring cell by using first time information received from a serving cell; and taking measurements using the CSI-RS, wherein the first time information is generated on the basis of the second time information of a serving cell, which receives an uplink signal from the terminal, and the third time information from a neighboring cell, which receives the uplink signal.

Method for performing channel estimation in wireless communication system and apparatus therefor

A method is described for performing the channel estimation of a physical downlink control channel (PDCCH) in a wireless communication system. Specifically, The method performed by a user equipment (UE) includes transmitting, to a base station, UE capability information related to the channel estimation, receiving, from the base station, information for a PDCCH monitoring span, and performing a channel estimation based on the information for the PDCCH monitoring span, wherein the UE capability information may include information for a maximum number of control channel elements (CCEs) capable of being channel-estimated per PDCCH monitoring span.

Method for monitoring control signal of terminal in wireless communication system and terminal using the same

A method of monitoring a control signal in a wireless communication system, where the method is performed by a user equipment (UE) and includes: selecting at least one control resource set (CORESET) among a plurality of CORESETs based on an overlap between physical downlink control channel (PDCCH) monitoring occasions in the plurality of CORESETs; and monitoring a PDCCH only in the selected at least one CORESET, among the plurality of CORESETs. The method also includes: based on the at least one CORESET including a first CORESET, and based on a first reference signal of the first CORESET and a second reference signal of a second CORESET being associated with a same synchronization signal/physical broadcast channel block (SSB): monitoring the PDCCH in both the first CORESET and the second CORESET.

METHOD AND DEVICE FOR RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM

A method for receiving a signal by a terminal in a wireless communication system according to an embodiment of the present invention can comprise a step for determining REGs, which are to be assumed that the same precoding is used, among REGs comprised in a control resource set on the basis of information relating to precoder granularity, and thus monitoring a control channel candidate. Particularly, if a part of resource blocks overlaps another resource region and particular resource blocks in the resource blocks are no longer contiguous due to the overlapping, the terminal can comprise an assumption that the same precoding is used with respect to the REGs comprised in the particular resource blocks even if the information relating to the precoder granularity corresponds to first configuration.

Method and device for transmission of synchronization signal by device-to-device terminal in wireless communication system

One embodiment of the present invention is a method by which a D2D terminal transmits a synchronization signal in a wireless communication system, the synchronization signal transmission method comprising: generating a primary sidelink synchronization signal (PSSS); and transmitting the PSSS, wherein the transmission power of the PSSS is the same as the transmission power of a channel in which system and synchronization-related information is transmitted.

Method and apparatus for measurement for inter-cell interference coordination in radio communication system

A method for supporting measurement of a User Equipment (UE) by a first base station in a wireless communication system. The method according to an embodiment includes acquiring, by the first base station, information of a downlink subframe configuration of a second base station; and transmitting, by the first base station, information of measurement objects to the UE. The measurement objects are determined based on the downlink subframe configuration of the second base station. A measurement is performed by the UE in resources indicated based on the information of the measurement objects. The resources are determined as a combination of at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol and at least one downlink subframe. The downlink subframe configuration of the second base station includes information indicating at least one subframe configured as an Almost Blank Subframe (ABS).

METHOD FOR COMMUNICATION CONSIDERING INTERFERENCE BETWEEN CELLS IN A WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and a device for measuring a channel in a wireless communication system, and comprises a step of, during a handover, receiving information on a specific time interval from a first cell, receiving a signal from a second cell through the specific time interval, and measuring the second cell using the received signal, wherein the first cell and the second cell are different from each other. 1. A method of performing channel measurement at an User Equipment (UE) in a wireless communication system , the method comprising:receiving information about a specific time interval from a first cell during handover;receiving a signal from a second cell through the specific time interval, wherein the second cell is different from the first cell; andmeasuring the second cell using the received signal.2. The method according to claim 1 , wherein the first cell is a source cell and the second cell is a target cell.3. The method according to claim 1 , wherein the information about the specific time interval is received from the first cell via a handover command message.4. The method according to claim 3 , wherein the signal of the second cell is received using the information about the specific time interval in the handover command message until receiving updated information about the specific time interval.5. The method according to claim 4 , wherein the updated information is received via system information or signaling dedicated to the UE.6. A user equipment (UE) used in a wireless communication system claim 4 , comprising:a radio frequency (RF) unit; anda processor,wherein information about a specific time interval is received from a first cell during handover, a signal is received from a second cell through the specific time interval, and the second cell is measured using the received signal, andwherein the first cell and the second cell are different.7. ...

Method and user device for transceiving data in next generation mobile communication system

A disclosure of the present specification provides a method for transceiving data in a next generation mobile communication system. The method may comprise a step of receiving system information from a base station. The system information may comprise: system band information; information regarding a first uplink center frequency and a second uplink center frequency for an uplink band within the system band; and information regarding a first downlink center frequency and a second downlink center frequency for a downlink band within the system band. The method may comprise: a step of receiving, from the base station, a control signal to change the downlink band to a second downlink center frequency; and a step of tuning a radio frequency (RF) unit in order to switch the downlink band from the first downlink center frequency to the second downlink center frequency.

Method for transmitting and receiving signal based on LTE and NR in wireless communication system and apparatus therefor

The present invention relates to a method for an NR (New Radio Access Technology) user equipment to transmit and receive a signal in a wireless communication system and an apparatus therefor. The method comprises the steps of checking a PDCCH (Physical Downlink Control Channel) order and, if the PDCCH order is checked, initiating a random access procedure. In this case, if a first uplink carrier and a second uplink carrier are configured, the random access procedure is configured to transmit a random access preamble via a specific uplink carrier corresponding to an indicator associated with the PDCCH order among the first uplink carrier and the second uplink carrier.

Method for configuring reference signal for V2V communication in wireless communication system, and apparatus therefor

The present invention relates to a method for receiving and configuring a reference signal of a vehicle-to-vehicle (V2V) device for V2V communication in a wireless communication system. Particularly, the method comprises the steps of: performing synchronization with a first synchronization source having a frequency for dedicated short range communication (DSRC) as a center frequency; and receiving, from the first synchronization source, a reference signal on an orthogonal frequency division multiplexing (OFDM) symbol configured according to a reference signal configuration, wherein the reference signal configuration is defined for frequency correction according to a hop sync of the center frequency.

METHOD FOR RECEIVING DOWNLINK CONTROL INFORMATION BY UE IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME

The present invention relates to a method for receiving control information by a UE in a wireless communication system, and an apparatus for same. More specifically, the method includes a step of receiving reconfiguration downlink control information (DCI), wherein the reconfiguration DCI includes a plurality of reconfigurations relating to a UE group including the UE and is configured so as to be received on the basis of a radio network temporary identifier (RNTI) defined for the reconfiguration DCI.

Method and apparatus for reporting channel state information in wireless communication system

Method and apparatus for removing interference and receiving signal in wireless communication system

The present invention relates to a wireless communication system. A method for a terminal for removing interference and receiving a signal in a wireless communication system according to one embodiment of the present invention comprises the steps of: receiving configuration information for channel status information which has utilized interference measurements; and on the basis of the configuration information, measuring the interference from an interfering cell, and on the basis of the measured interference, measuring the channel status information from an interference measurement resource (IMR), wherein interference can be measured, in a resource block in which an IMR exists, on the basis of whether the interfering cell is transmitting data and the type of the signal transmitted from the IMR.

Method for performing measurement in wireless communications system and apparatus therefor

A method for performing measurement by a terminal in a wireless communications system according to an embodiment of the present invention includes the steps of: receiving from a first transmission point the uplink-downlink structures associated respectively with a second transmission point and a third transmission point; and determining at least one measurement set based on the received uplink-downlink structures, wherein each measurement set consists of the sub-frames that: the duplex direction combination during a particular time interval in the case of following the uplink-downlink structure associated with the second transmission point is the same as the duplex direction combination during the particular time interval in the case of following the uplink-downlink structure associated with the third transmission point.

METHOD AND APPARATUS FOR PERFORMING HANDOVER IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a method for a terminal performing a handover in a wireless communication system, comprising a step of receiving from a first transmission point, information required for performing the handover to a second transmission point, wherein the information required for performing the handover includes information related to a system frame of the second transmission point.

METHOD FOR TRANSMITTING OR RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

A method for receiving downlink control information by a terminal in a wireless communication system according to an embodiment of the present invention may comprise the steps of: performing blind detection of a group-common physical downlink control channel (PDCCH) in a common search space (CSS) having a plurality of PDCCH candidates; and acquiring downlink control information (DCI) indicating a slot format from the group-common PDCCH acquired through the blind detection, wherein, in the blind detection of the group-common PDCCH, the terminal attempts to selectively detect the group-common PDCCH for only a PDCCH candidate at a predetermined position in the CSS having the plurality of PDCCH candidates.

METHOD AND APPARATUS FOR TRANSMITTING A CONTROL CHANNEL AND A DATA CHANNEL IN A WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting a control channel in a wireless communication system that supports multi-cell cooperative communication. According to the present invention, a scheme for protecting a control channel and a data channel of one cell from interference caused by another cell is provided.

Method and apparatus for acquiring diversity gain according to distributed resource allocation for downlink control channel in wireless communication system

In the present invention, disclosed is a method for a base station transmitting a downlink control channel to user equipment in a wireless communication system. More specifically, the method comprises the steps of configuring resource elements, which are included in each of a plurality of resource blocks, as a plurality of resource element groups comprising a predetermined number of resource elements; allocating antenna ports to the resource elements which are included in each of the plurality of resource element groups; allocating as a transmission resource for the downlink control channel, at least one resource element group from each of the plurality of resource blocks; and transmitting the downlink control channel to the user equipment by using the transmission resource.

Method and apparatus for signal transceiving in wireless communication system

An embodiment of the present invention is a method for receiving a signal from a plurality of transmission points in a wireless communication system, the method for receiving a signal comprising the steps of: blind decoding a first search space of a subframe received from a first transmission point; and blind decoding a second search space of a subframe received from a second transmission point, wherein the combination of the first search space and the second search space is equivalent to a search space that results when a signal is received from only one transmission point from among the plurality of transmission points.

Method for transmitting synchronization signal in wireless communication system

An embodiment of the present invention relates to a method for transmitting a synchronization signal in a wireless communication system. The method comprises: a step of generating a secondary synchronization signal from a combination of two sequences; and a step of transmitting the synchronization signal. The manner of combination of the two sequences varies depending on the sub-frame number to which the secondary synchronization signal is transmitted, and if the generation of the secondary synchronization signal is performed by a terminal, then the sub-frame number which determines the manner of combination is considered to be the same.

Method for transmitting an receiving downlink signal in wireless communication system, and apparatus therefor

A method for a terminal, in a wireless communication system, receiving a downlink signal from a cell in which a plurality of beams are multiplexed according to an embodiment of the present invention comprises the steps of: generating a quasi-orthogonal scrambling sequence that is used for scrambling the downlink signal; and receiving the downlink signal through one or more beams of the plurality of multiplexed beams using the generated quasi-orthogonal scrambling sequence, wherein the terminal can initialise the quasi-orthogonal scrambling sequence using a beam-specific parameter corresponding to one or more beams for transmitting the downlink signal when generating the quasi-orthogonal scrambling sequence.

Method for monitoring physical downlink control channel, and device using same

Provided are a method and device for monitoring a PDCCH of a terminal in a wireless communication system. The terminal receives first setting information that provides notification of a monitoring occasion for detecting a wake up signal (WUS), and performs monitoring for detecting the wake up signal in the monitoring occasion. If the wake up signal is not detected in the monitoring occasion, whether to monitor a PDCCH in the next DRX-on period is determined on the basis of second setting information that indicates the operation to be applied to the terminal when the terminal does not detect the wake up signal.

Method for performing channel estimation in wireless communication system and apparatus therefor

A method of performing channel estimation of a physical downlink control channel (PDCCH) in a wireless communication system is disclosed. Specifically, the method performed by a user equipment (UE) includes receiving a synchronization signal block (SSB) from a base station, receiving system information (SI) from the base station based on the SSB, transmitting a physical random access channel (PRACH) preamble to the base station, receiving a response to the PRACH preamble from the base station, transmitting UE capability information related to the channel estimation to the base station, receiving information for a PDCCH monitoring duration from the base station, and performing the channel estimation based on the information for the PDCCH monitoring duration. The UE capability information includes information for a maximum number of control channel elements (CCEs) that are capable of the channel estimation per PDCCH monitoring duration.

Method and apparatus for transmitting and receiving signal for device-to-device terminal in wireless communication system

Disclosed is a method for transmission of a device-to-device (D2D) signal by a terminal in a wireless communication system. The method for transmission of a D2D signal, according to an embodiment of the present invention, comprises the steps of: a first terminal generating a D2D synchronization signal; and transmitting a subframe comprising the D2D synchronization signal, wherein the D2D synchronization signal comprises a primary D2D synchronization signal and a secondary D2D synchronization signal, and wherein, if at least one of the primary D2D synchronization signal and the secondary D2D synchronization signal in the subframe comprises two or more sequences that are transmitted in the subframe at different times, the two or more sequences are different from one another.

Method of transmitting uplink control information in wireless communication system supporting change of usage of radio resource and apparatus therefor

The present invention relates to a method of transmitting uplink control information (UCI), which is transmitted by a user equipment in a wireless communication system. In particular, the method includes the steps of receiving first offset information associated with uplink control information (UCI) transmission in uplink subframes according to uplink-downlink configuration of a serving cell and receiving a power control parameter configuring a first uplink power control subframe set and a second uplink power control subframe set for the uplink subframes. In this case, the first uplink power control subframe set and the second uplink power control subframe set are configured to be independently applied by an offset for transmitting the uplink control information.

Method and device for measuring a downlink in a wireless communication system

The present invention relates to a wireless communication system, and more particularly, to a method and device for measuring a downlink in a wireless communication system. According to the present invention, provided is a method for properly and accurately measuring a downlink when an inter-cell interference adjustment is applied.

Method for performing PDCCH monitoring by terminal in wireless communication system and terminal using said method

The present specification provides a method of performing physical downlink control channel (PDCCH) monitoring by a terminal in a wireless communication system, comprising the steps of: receiving, from a network, information related to power saving; and performing the PDCCH monitoring on the basis of the received information related to the power saving, wherein the information related to the power saving, which is a single piece of information, is information indicating at least one of whether the terminal is to perform a wake-up operation or whether the terminal is to perform a sleep operation.

Method whereby user equipment operates in wireless communication system, and device for supporting same

Disclosed are a method whereby user equipment operates in a wireless communication system, and a device for supporting same. Disclosed more particularly are: a method whereby, in case a base station which operates multiple analogue beams is connected to user equipment, the user equipment determines a cell-level radio link failure (RLF) and a beam-level RLF through signal transmission and reception to and from the base station and carries out an operation based on the determination; and a device for supporting said method.

METHOD FOR RECEIVING DOWNLINK SIGNAL AND METHOD FOR TRANSMITTING SAME, USER EQUIPMENT, AND BASE STATION

Presented is a plan for utilizing resources not being used in a subframe consisting of relay transmission, and being thrown away thereafter. The present invention enables efficient utilization of the resources by reducing the waste of the resources in a wireless communication system supporting a relay.

Method and apparatus for transmitting and receiving signal for device-to-device terminal in wireless communication system

Disclosed is a method for transmission of a device-to-device (D2D) signal by a terminal in a wireless communication system. The method for transmission of a D2D signal, according to an embodiment of the present invention, comprises the steps of: a first terminal generating a D2D synchronization signal; and transmitting a subframe comprising the D2D synchronization signal, wherein the D2D synchronization signal comprises a primary D2D synchronization signal and a secondary D2D synchronization signal, and wherein, if at least one of the primary D2D synchronization signal and the secondary D2D synchronization signal in the subframe comprises two or more sequences that are transmitted in the subframe at different times, the two or more sequences are different from one another.

Method and device for performing measurement in wireless communication system

A method by which a terminal measures device-to-device (D2D) resources in a wireless communication system, according to one embodiment of the present invention comprises the steps of: receiving allocated resources for D2D transmission and reception; performing a first measurement on resource regions for the D2D transmission and reception; determining resource regions in which a discovery signal exists, which are estimated on the basis of the first measurement result; and performing a second measurement on the estimated resource regions.

METHOD FOR RECEIVING SYNCHRONIZATION INFORMATION FOR DIRECT COMMUNICATION BETWEEN USER EQUIPMENT AND APPARATUS FOR SAME

Disclosed is a method by which first user equipment receives synchronization information for a Device-to-Device (D2D) link at a user equipment (UE) in a wireless communication system. Specifically, the method comprises: receiving configuration information for synchronization from serving cell; and acquiring information on reference cell for synchronization of the D2D link based on the configuration information; and acquiring a synchronization resource based on the information on reference cell, wherein the information on reference cell comprises an identifier of the reference cell. 120-. (canceled)21. A method for receiving synchronization information for a Device-to-Device (D2D) link at a user equipment (UE) in a wireless communication system , the method comprising:receiving configuration information for synchronization from serving cell; andacquiring information on reference cell for synchronization of the D2D link based on the configuration information; andacquiring a synchronization resource based on the information on reference cell,wherein the information on reference cell comprises an identifier of the reference cell.22. The method according to claim 21 , wherein the configuration information includes information on offset used for the D2D link.23. The method according to claim 22 , wherein the information on offset indicates subframe used for the D2D link.24. The method according to claim 23 , wherein the subframe indicated by the information on offset corresponds to a start subframe used for the D2D link.25. The method according to claim 21 , further comprising receiving D2D signal through the D2D link based on the synchronization resource from the reference cell.26. The method according to claim 25 , the D2D signal is received within a predetermined range with respect to the synchronization resource acquired from reference cell.27. A user equipment (UE) in a wireless communication system supporting a Device-to-Device (D2D) link claim 25 , the user ...

Method and apparatus for preventing inter-cell interference in a heterogeneous network system

The present application relates to a method for a victim cell to construct a subframe alignment in a wireless communication system. More particularly, the method comprises the following steps: receiving, from an interfering cell, subframe alignment information including a first bitmap for defining a subframe pattern for the victim cell and a second bitmap for defining a hybrid automatic repeat and request (HARQ) process pattern of the victim cell; constructing a subframe alignment of the victim cell on the basis of the first bitmap and second bitmap; and performing scheduling for a terminal in the victim cell using the constructed subframe alignment. A downlink signal of the interfering cell may not be transmitted in one or more subframes designated by the subframe pattern for the victim cell, and the second bitmap has a size of 8 bits.

Synchronization signal transmission method and apparatus for device-to-device terminal in wireless communication system

A terminal apparatus for a device-to-device (D2D) terminal in a wireless communication system, according to an embodiment of the present invention, comprises a transmission device and a reception device; and a processor, wherein the processor generates and transmits a primary sidelink synchronization signal (PSSS) and a secondary sidelink synchronization signal (SSSS), wherein, if a PSBCH is transmitted in a subframe in which the PSSS and the SSSS are being transmitted and is normal CP, the PSSS and a PSBCH on power is the average power of a period, in the subframe in which the PSSS and the SSSS are being transmitted, not including a transient period, wherein the transient period of a starting part of the period for the PSSS and PSBCH ON power is not overlapped with an OFDM symbol on which the PSSS is transmitted.

APPARATUS FOR TRANSMITTING AN UPLINK SIGNAL AND METHOD THEREOF

An apparatus for transmitting an uplink signal and method thereof are disclosed, by which an uplink signal can be efficiently transmitted in a wireless communication system. The present invention includes receiving a downlink control information (DCI) used for PUSCH (physical uplink shared channel) scheduling, the DCI including an information for resource block allocation, an information for a channel status information request and a plurality of MCS (modulation and coding scheme) informations for a plurality of transport blocks and if a condition is met, transmitting a channel status information only on the PUSCH without a transport block for UL-SCH (uplink shared channel). Moreover, the condition includes a case that: only one transport block is enabled, the MCS information for the enabled transport block indicates an MCS index 29, the information for the channel status information request indicates 1, and the number of allocated resource blocks is equal to or smaller than 4.

Method of selecting synchronization source in wireless communication system and apparatus therefor

According to one embodiment of the present invention, a method of selecting a synchronization source, which is selected by a D2D (device-to-device) UE in a wireless communication system includes the steps of receiving a plurality of synchronization signals, selecting a plurality of candidate synchronization signals from a plurality of the synchronization signals and determining a synchronization signal in a manner of applying a priority to a plurality of the candidate synchronization signals and selecting a UE, which has transmitted the determined synchronization signal, as a synchronization source. In this case, the application of the priority can be performed in a manner of sequentially applying a plurality of priorities related to a D2D signal according to a priority for the application of the priority.

Method and apparatus for receiving downlink signal in wireless communication system

The present invention relates to a method by which a terminal receives a downlink signal through an enhanced physical downlink control channel (EPDCCH) in a wireless communication system. The method includes the steps of: receiving one or more EPDCCH physical resource block (PRB) sets; and blind decoding EPDCCH candidates for each set level from among the one or more EPDCCH PRB sets, wherein one or more of EPDCCH candidate indexes and EPDCCH PRB indexes are used for determining an antenna port related to the EPDCCH candidates.

Method for discovering device in wireless access system and device therefor

Disclosed are a device discovery method for device-to-device (D2D) communication in a wireless access system supporting D2D communication and a device therefor. Particularly, the device discovery method can comprise the steps of: enabling a first device in an idle mode to receive a paging message from a base station; enabling the first device to switching to an active mode if the paging message indicates the first device; enabling the first device to monitor a discovery signal transmitted from a second device if the paging message indicates that the first device operates in a reception mode with respect to transmission and reception of the discovery signal; enabling the first device to perform a random access procedure with the base station if the first device receives the discovery signal; enabling the first device to perform a connection establishment procedure with the base station after completing the random access procedure; and enabling the first device to transmit, to the base station ...

Methods for transmission and reception of downlink control information, relating to a beam status report, between base station and terminal in wireless communication system, and devices for supporting same

Disclosed are methods for transmission and reception of downlink control information between a base station and a terminal, and devices for supporting same. Disclosed more particularly are: methods whereby a base station transmits downlink control information by means of an analogue beam independently determined for every one or more symbols (e.g., a unit of one or more symbols) and, in response to the base station, a terminal receives, by means of a serving beam of the terminal, the downlink control information transmitted by means of the analogue beam, which corresponds to the serving beam; and devices for supporting same.

Method and device for transmission of synchronization signal by device-to-device terminal in wireless communication system

One embodiment of the present invention is a method by which a D2D terminal transmits a synchronization signal in a wireless communication system, the synchronization signal transmission method comprising: generating a primary sidelink synchronization signal (PSSS); and transmitting the PSSS, wherein the transmission power of the PSSS is the same as the transmission power of a channel in which system and synchronization-related information is transmitted.

Method and apparatus for transmitting and receiving signal in wireless communication system

Provided are a method of transmitting and receiving a signal in a wireless communication system, and an apparatus supporting the same.

METHOD AND DEVICE FOR MEASURING A DOWNLINK IN A WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system, and more particularly, to a method and device for measuring a downlink in a wireless communication system. According to the present invention, provided is a method for properly and accurately measuring a downlink when an inter-cell interference adjustment is applied. 1. A method of performing downlink measurement at a user equipment in a wireless communication system , the method comprising:receiving, at the user equipment from a base station, a configuration of a resource set on which the downlink measurement is to be performed; andperforming the downlink measurement on the configured resource set,wherein the configuration of the resource set on which the downlink measurement is to be performed is determined by the base station based on a resource set on which a neighboring cell performs inter-cell interference coordination.2. The method according to claim 1 , wherein the resource set on which the downlink measurement is to be performed is a downlink subframe set.3. The method according to claim 2 , wherein the downlink subframe set is configured based on subframes configured as almost blank subframes (ABSs) by the neighboring cell.4. The method according to claim 2 , wherein the downlink subframe set is configured as a subset of subframes configured as non-almost blank subframes (ABSs) by the neighboring cell.5. The method according to claim 4 , wherein the subset includes subframes statically configured as ABSs by the neighboring cell.6. The method according to claim 1 , wherein:the resource set on which the downlink measurement is to be performed is differently configured per cell subjected to the downlink measurement, andthe downlink measurement is performed according to the same calculation scheme regardless of the cell subjected to the downlink measurement.7. The method according to claim 6 , wherein:the downlink measurement includes measurement and calculation of reference signal received ...

Method for transmitting and receiving signal based on LTE and NR in wireless communication system and apparatus therefor

The present invention relates to a method for an NR (New Radio Access Technology) user equipment to transmit and receive a signal in a wireless communication system and an apparatus therefor. The method comprises the steps of checking a PDCCH (Physical Downlink Control Channel) order and, if the PDCCH order is checked, initiating a random access procedure. In this case, if a first uplink carrier and a second uplink carrier are configured, the random access procedure is configured to transmit a random access preamble via a specific uplink carrier corresponding to an indicator associated with the PDCCH order among the first uplink carrier and the second uplink carrier.

METHOD AND APPARATUS FOR ENHANCED CONTROL CHANNEL-BASED OPERATION IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system, and more specifically, to a method and an apparatus for enhanced-control channel-based operation. A method for a terminal for transmitting confirmation response information in a wireless communication system according to one embodiment of the present invention comprises a step for transmitting confirmation response information for a downlink data channel by means of an uplink control channel resource, wherein an index for the uplink control channel resource can be determined on the basis of a delegate antenna port of a downlink control channel derived from the identifier of the terminal.

Method and device for measuring and reporting signal in wireless communication system

A method for measuring and reporting a beam by means of a terminal in a wireless communication system according to an embodiment of the present invention may comprise the steps of: measuring a plurality of transmission beams for a physical downlink control channel (PDCCH) via at least one reception beam; determining at least one transmission beam to be reported to a base station, according to a result of measuring the plurality of transmission beams; and transmitting, to the base station, a measurement report including information relating to the determined at least one transmission beam, wherein the terminal identifies a reception beam applied to each of the determined at least one transmission beam, and reports an index of a synchronization signal block available through the identified reception beam, to the base station via the measurement report. The terminal is capable of communicating with at least one of another terminal, a terminal related to an autonomous driving vehicle, the base ...

Method for performing measurement in wireless communication system and apparatus therefor

One embodiment of the present invention comprises a method for a terminal performing a measurement in a wireless communication system. The method for performing a measurement comprises the steps of: a terminal performing a measurement in a particular resource area and transmitting the measurement result to a base station; and receiving information regarding a first signal from the base station, wherein if the terminal is configured to select the resource to be used for transmitting the first signal, the information regarding the first signal includes a resource pool that is determined on the basis of the measurement result.

Inter-cell interference coordination in a wireless communication system

A method and a first base station are described for setting measurement resources. Information about setting of a blank subframe of a second base station among a plurality of subframes is received. Resources are set in which a terminal will perform measurement using the information about setting of the blank subframe of the second base station. The information about setting of the blank subframe of the second base station includes a bitmap indicating blank subframes and non-blank subframes of the second base station. In addition, the resources in which the terminal will perform measurement are determined among the blank subframes indicated by the bitmap.

Downlink power allocation method for must transmission in wireless communication system and apparatus therefor

The present application discloses a method for transmitting a downlink signal by a base station in a wireless communication system. Particularly, the method comprises the steps of: distributing a total transmission power with respect to data for a short range user equipment (UE) and data for a long range UE; and transmitting the data for the short range UE through a plurality of layers, and transmitting the data for the long range UE through at least one of the plurality of layers, using the distributed transmission power, wherein the data for the short range UE and the data for the long range UE are transmitted through the same time resource and the same frequency resource, and a transmission power of the data for the short range UE distributed for each of the plurality of layers has an equal value.

Method and apparatus for transmitting control information in wireless communication system

A method for enabling a base station to transmit control information in a wireless communication system according to one embodiment of the present invention, comprises a step of transmitting an enhanced physical downlink channel (E-PDCCH) for a terminal using at least one physical resource block pair among a plurality of physical resource block pairs for transmitting the E-PDCCH, wherein the plurality of physical resource block pairs include one or more physical resource block pair sets, and a parameter related to a demodulation reference signal for the E-PDCCH is set with respect to each physical resource block pair set.

Method for transmitting or receiving signal in wireless communication system and apparatus therefor

A method for receiving, by a terminal, downlink control information in a wireless communication system according to one embodiment of the present invention comprises the steps of: receiving information on a reference subcarrier spacing (SCS) from among a plurality of SCS numerologies; receiving downlink control information through a terminal group common physical downlink control channel (PDCCH); and obtaining information on a slot format from the downlink control information, wherein the downlink control information indicates the slot format on the basis of the reference SCS, and when the SCS of the terminal is different from the reference SCS, the terminal may convert the slot format of the reference SCS according to the SCS of the terminal.

Method for transmitting or receiving signal in wireless communication system and device for performing the method

One aspect of the present disclosure provides a method for detecting, by a user equipment, a PDCCH signal, the method including: receiving configurations for a plurality of search space sets from a base station; determining, based on a monitoring periodicity of each of the plurality of search space sets, search space sets for which the user equipment should monitor a PDCCH signal for a specific unit time; and attempting blind-detection selectively for only a part of PDCCH candidates included in the determined search space sets when a number of PDCCH candidates or a number of CCEs included in the determined search space sets exceed a maximum number of candidates or a maximum number of CCEs, wherein in selection of PDCCH candidates for attempting the blind-detection, the user equipment firstly selects PDCCH candidates from a first search space set related to a CSS among the determined search space sets.

Method for configuring an interference measurement resource in a wireless communication system, and apparatus for thereof

The present invention relates to a method of transmitting CSI-RS (channel state information-reference signal) configuration, which is transmitted by a base station in a wireless communication system, and an apparatus therefor. Specifically, the method includes the steps of composing an information element configuring a first CSI (channel state information) subframe set and a second CSI subframe set and transmitting the CSI-RS configuration including at least one or more ZP-CSI-RS configurations (zero power CSI-RS configuration). The CSI-RS configuration includes a first ZP-CSI-RS configuration for a first user equipment to which the information element is not set and a second user equipment to which the information element is set and a second ZP-CSI-RS configuration for the second user equipment only.

Method for receiving downlink signal and method for transmitting same, and device for receiving same and device for transmitting same

The present invention relates to a method for a transmission device to transmit data and a reference signal for demodulation for the data, to a reception device. The transmission device of the present invention appropriately configures the reference signal for demodulation of the data being transmitted to the reception device by the transmission device, and transmits the reference signal to the reception device with the data. According to embodiments of the present invention, the demodulation performance for the data transmitted from the transmission device to the reception device is enhanced.

Method for transmitting or receiving ACK/NACK signal in wireless communication system and apparatus for same

A method for a terminal receiving an ACK/NACK signal in a wireless communication system, according to one embodiment of the present invention, comprise the steps of: transmitting an uplink signal including a terminal identifier of the terminal through one of a plurality of resources belonging to a first resource pool, according to a contention-based multiple access scheme; and attempting detection of an ACK signal and/or a NACK signal relating to the uplink signal from a second resource pool linked to the first resource pool, wherein when the terminal attempts detection of the ACK signal or the NACK signal, the ACK signal is assumed to be terminal-specifically signaled based on the terminal identifier, and the NACK signal is assumed to be broadcasted through a bitmap specific to the first resource pool.

Method for monitoring physical downlink control channel of terminal in wireless communication system, and device using same method

Provided are a method and device for monitoring a downlink control channel of a terminal in a wireless communication system. The terminal receives configuration information which informs of the position of an SSB or configuration information which informs of the position of an LTE CRS, and receives configuration information which informs of a monitoring occasion for detecting a wake up signal (WUS). If first PDCCH monitoring for detecting the wake up signal is not required since a resource of the monitoring occasion overlaps with a resource of the SSB and/or a resource of the LTE CRS, the terminal performs second PDCCH monitoring in a next discontinuous reception (DRX)-on duration.

METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING WIRELESS SIGNAL IN WIRELESS COMMUNICATION SYSTEM

A method for a terminal to transmit or receive a signal in a wireless communication system according to an embodiment of the present invention can include: monitoring physical downlink control channel (PDCCH) candidates; obtaining downlink control information (DCI) through a PDCCH detected in a first slot as a result of monitoring the PDCCH candidates; and receiving a physical downlink shared channel (PDSCH) or transmitting a physical uplink shared channel (PUSCH) in a second slot on the basis of the DCI.

Method for operating bandwidth part

The present disclosure provides a method by which a terminal, in which a primary cell and a secondary cell are set, activate a bandwidth part (BWP) in a wireless communication system, comprising: receiving downlink control information (DCI) from a network, the DCI notifying the terminal of the separation of the secondary cell from the dormant BWP; and activating a specific BWP of the secondary cell on the basis of the DCI, the specific BWP being a BWP set by upper layer signaling received through the terminal.

METHOD FOR TRANSMITTING SIGNAL USING PLURALITY OF CODEWORDS IN WIRELESS COMMUNICATION SYSTEM AND TRANSMISSION END FOR SAME

A method for transmitting a signal using a plurality of codewords in a wireless communication system and a transmission end for same are disclosed. The method for the transmission end transmitting the signal using the plurality of codewords, according to the present invention, comprises the following steps: mapping a first codeword on at least one layer from a first layer group and mapping a second codeword on at least one layer from a second layer group, when transmitting a rank of at least five; and transmitting the codewords which are mapped on the first and second layer groups, wherein each of the first layer group and the second layer group can include four layers. 1. A method for transmitting a signal using a plurality of codewords by a transmission end in a wireless communication system , the method comprising:in case of transmission of at least Rank 5, mapping a first codeword to at least one layer from among a first layer group, and mapping a second codeword to at least one layer from among a second layer group; andtransmitting codewords mapped to the first and second layer groups.2. The method according to claim 1 , wherein each of the first layer group and the second layer group includes four layers.3. The method according to claim 2 , wherein:the first layer group includes Layer 0 having a layer index 0, Layer 1 having a layer index 1, Layer 2 having a layer index 2, and Layer 3 having a layer index 3; andthe second layer group includes Layer 4 having a layer index 4, Layer 5 having a layer index 5, Layer 6 having a layer index 6, and Layer 7 having a layer index 7.4. The method according to claim 1 , wherein the transmission end is a base station (BS).5. The method according to claim 1 , wherein:in case of transmission of Rank 5, the first codeword is mapped to 2, 3 or 4 layers from among the first layer group, and the second codeword is mapped to 1, 2, or 3 layers from among the second layer group.6. The method according to claim 1 , wherein:in case of ...

Method and apparatus for configuring control channel according to BWP or beam switching in wireless communication system

According to one embodiment of the present disclosure, a method and an apparatus for allowing a user equipment (UE) to effectively monitor a control resource set (CORESET) in order to read remaining minimum system information (RMSI) in a wireless communication system are provided. The UE receives a media access control (MAC) control element (CE) indication, performs a random access channel (RACH) procedure, determines a transmission configuration indicator (TCI) state of CORESET 0 on the basis of the most recent of either the MAC CE indication or the RACH procedure, and monitors CORESET 0 on the basis of the determined TCI state.

METHOD AND APPARATUS FOR REDUCING INTER-CELL INTERFERENCE IN RADIO COMMUNICATION SYSTEM

A method and apparatus for reducing inter-cell interference in a radio communication system are disclosed. A method for reducing inter-cell interference includes determining REs of a downlink subframe of a first cell overlapping with CRS transmission REs of a downlink subframe of a second cell, determining a portion of REs of the downlink subframe of the first cell overlapping with CRS transmission REs of the downlink sub-frame of the second cell as punctured REs, mapping one or more downlink channel to the downlink subframe of the first cell other than the punctured REs, and transmitting the one or more downlink channel mapped to the downlink subframe of the first cell to a UE. 111.-. (canceled)12. A method for reducing inter-cell interference , the method comprising:transmitting, from a first cell to a user equipment, information on Cell-specific Reference Signal (CRS) of a second cell,wherein the information on CRS of the second cell includes a number of CRS antenna port of the second cell.13. The method according to claim 12 , wherein the information on CRS of the second cell further includes a subframe configuration of the second cell indicating subframes containing CRS in a data region.14. The method according to claim 13 , wherein the subframe configuration includes Multicast/Broadcast over Single Frequency Network (MBSFN) subframe configuration of the second cell.15. The method according to claim 12 , wherein the information on CRS of the second cell is provided from the first cell via higher layer signaling.16. The method according to claim 12 , wherein CRS transmission Resource Elements (REs) of the second cell is determined by the user equipment based on the information on CRS of the second cell.17. The method according to claim 12 , wherein at least a portion of REs of a subframe of the first cell overlapped with the CRS transmission REs of the second cell is not used for a downlink channel of the first cell.18. The method according to claim 17 , wherein ...

METHOD AND APPARATUS FOR MEASUREMENT FOR INTER-CELL INTERFERENCE COORDINATION IN RADIO COMMUNICATION SYSTEM

A wireless communication system and, more specifically, a measurement method and apparatus for inter-cell interference coordination in a wireless communication system are disclosed. Herein, a method for supporting measurement of a User Equipment (UE) by a first base station in a wireless communication system includes the steps of acquiring information of downlink subframe configuration of a second base station, determining measurement objects of downlink resource of the first base station based on the downlink subframe configuration of the second base station; transmitting information of the measurement objects to the UE, and receiving measurement result for the measurement objects from the UE. 1. A method for supporting measurement of a User Equipment (UE) by a first base station in a wireless communication system , the method comprising:acquiring information of downlink subframe configuration of a second base station;determining measurement objects of downlink resource of the first base station based on the downlink subframe configuration of the second base station;transmitting information of the measurement objects to the UE; andreceiving measurement result for the measurement objects from the UE.2. The method according to claim 1 ,wherein the measurement objects include downlink resource of the first base station not interfered by the second base station.3. The method according to claim 1 ,wherein the measurement objects include downlink resource of the first base station constantly interfered by the second base station.4. The method according to claim 1 ,wherein the information of the measurement objects restrict a measurement region for the UE by one or a combination of downlink subframe, control region, data region, slot, OFDM symbol, resource block and antenna port of the first base station.5. The method according to claim 1 ,wherein the information of the measurement objects is transmitted through RRC(Radio Resource Control) signaling.6. The method ...

METHOD FOR REPORTING A CHANNEL QUALITY INDICATOR BY A RELAY NODE IN A WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME

The present invention relates to a method for reporting a channel quality indicator for a relay node-dedicated physical downlink shared channel (R-PDSCH) from a base station by a relay node in a wireless communication system. More particularly, the method comprises the following steps: receiving one or more reference signals from the base station; calculating a channel quality indicator for the R-PDSCH on the basis of one or more reference signals; and reporting the channel quality indicator to the base station. 117-. (canceled)18. A method for reporting a channel quality indicator at a user equipment (UE) in a wireless communication system , the method comprising:receiving one or more common reference signals (CRSs) from a base station;computing a channel quality indicator (CQI) for a specific transmission mode of a physical downlink shared channel (PDSCH) based on the one or more CRSs; andreporting the CQI for the specific transmission mode to the base station,wherein both MBSFN (Multicast Broadcast Single Frequency Network) subframe and non-MBSFN subframe are valid subframes to compute the CQI for the specific transmission mode,wherein the UE computes the CQI for the specific transmission mode under assumption that resource elements (REs) of the one or more CRSs are in the MBSFN subframe as the non-MBSFN subframe.19. The method of claim 18 , wherein the PDSCH is transmitted based on a DM-RS (Demodulation Reference Signal) from the base station to the UE in the specific transmission mode.20. The method of claim 18 , wherein the MBSFN subframe is an invalid subframe to compute the CQI for other transmission modes.21. The method of claim 18 , wherein the UE computes the CQI for the specific transmission mode under assumption that valid subframes have a predetermined number of available REs for computing the CQI.22. The method of claim 21 , wherein the REs of the one or more CRSs are not used as the available REs for computing the CQI.23. A user equipment (UE) in a ...

METHODS FOR TRANSMITTING AND RECEIVING DOWNLINK DATA IN MBSFN SUBFRAME AND APPARATUSES THEREOF

A method for receiving a downlink signal from a base station (BS) in a multicast broadcast single frequency network (MBSFN) subframe is disclosed. The method is performed by a user equipment (UE) and includes receiving information indicating an MBSFN subframe configured as an almost blank subframe (ABS) (ABS MBSFN subframe) among MBSFN subframes of which a data region is allocated a reduced transmission power lower than a transmission power in a data region of a normal subframe, and demodulating the downlink signal received in the data region of the ABS MBSFN subframe based on a cell-specific reference signal (CRS) in a control region of the ABS MBSFN subframe according to the information. 1. A method for receiving a downlink signal from a base station (BS) in a multicast broadcast single frequency network (MBSFN) subframe , the method performed by a user equipment (UE) and comprising:receiving information indicating an MBSFN subframe configured as an almost blank subframe (ABS) (ABS MBSFN subframe) of which a data region is allocated a reduced transmission power lower than a transmission power in a data region of a normal subframe, among MBSFN subframes; anddemodulating the downlink signal received in the data region of the ABS MBSFN subframe based on a cell-specific reference signal (CRS) in a control region of the ABS MBSFN subframe according to the information.2. The method according to claim 1 , wherein the information indicating the ABS MBSFN subframe is received from the BS through higher layer signaling.3. The method according to claim 1 , further comprising receiving claim 1 , from the BS claim 1 , information about an antenna virtualization matrix and a precoding matrix for demodulation of the downlink signal based on the CRS.4. The method according to claim 1 , further comprising:receiving a UE-specific reference signal (RS) to which a higher transmission power than the reduced transmission power is allocated, in the data region of the ABS MBSFN subframe, ...

METHOD AND APPARATUS FOR PREVENTING INTER-CELL INTERFERENCE IN A HETEROGENEOUS NETWORK SYSTEM

The present application relates to a method for a victim cell to construct a subframe alignment in a wireless communication system. More particularly, the method comprises the following steps: receiving, from an interfering cell, subframe alignment information including a first bitmap for defining a subframe pattern for the victim cell and a second bitmap for defining a hybrid automatic repeat and request (HARQ) process pattern of the victim cell; constructing a subframe alignment of the victim cell on the basis of the first bitmap and second bitmap; and performing scheduling for a terminal in the victim cell using the constructed subframe alignment. A downlink signal of the interfering cell may not be transmitted in one or more subframes designated by the subframe pattern for the victim cell, and the second bitmap has a size of 8 bits. 1. A method of configuring a subframe arrangement , which is configured by an interfered cell in a wireless communication system , comprising the steps of:receiving a subframe arrangement information including a first bitmap for defining a subframe pattern for the interfered cell and a second bitmap for defining an HARQ (hybrid automatic repeat and request) process pattern of the interfered cell from an interfering cell;configuring the subframe arrangement of the interfered cell based on the first bitmap and the second bitmap; andperforming a scheduling for a user equipment belonging to the interfered cell using the configured subframe arrangement,wherein a downlink signal of the interfering cell is not transmitted in one or more subframes designated by the subframe pattern for the interfered cell and wherein a size of the second bitmap is 8 bits.2. The method of claim 1 , the subframe arrangement of the interfered cell configuring step claim 1 , comprising the steps of:repeating each of the first bitmap and the second bitmap with a size of a least common multiple of the size of the first bitmap and the second bitmap; andgenerating ...

METHOD OF REDUCING INTERCELL INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREOF

A method for transmitting a downlink signal through coordinated beamforming with a neighboring cell at a serving cell includes transmitting first subframe information for designating one or more subframes to the neighboring cell, transmitting first Precoding Matrix Index (PMI) restriction related information including one or more PMIs to a User Equipment (UE) of the serving cell, the PMIs forming a beam so that interference affecting the neighboring cell in the one or more subframes has a constant characteristic, receiving first Channel State Information (CSI) reporting measured in the one or more subframes based on the first PMI restriction related information from the UE of the serving cell, and transmitting a downlink signal to the UE of the serving cell based on the first CSI reporting, the neighboring cell receiving CSI reporting corresponding to the neighboring cell, measured by the UE of the neighboring cell in the one or more subframes. 1. A method for transmitting a downlink signal through coordinated beamforming with a neighboring cell at a serving cell in a wireless communication system , comprising:transmitting first subframe information for designating one or more subframes to the neighboring cell;transmitting first Precoding Matrix Index (PMI) restriction related information including one or more PMIs to a User Equipment (UE) of the serving cell, wherein the PMIs form a beam so that interference affecting the neighboring cell in the one or more subframes has a constant characteristic;receiving first Channel State Information (CSI) reporting measured in the one or more subframes based on the first PMI restriction related information from the UE of the serving cell; andtransmitting a downlink signal to the UE of the serving cell based on the first CSI reporting,wherein the neighboring cell receives CSI reporting corresponding to the neighboring cell, measured by the UE of the neighboring cell in the one or more subframes.2. The method according to claim ...

INTER-CELL INTERFERENCE COORDINATION IN A WIRELESS COMMUNICATION SYSTEM

Disclosed herein is a wireless communication system. More particularly, disclosed herein is a method and apparatus for coordinating and reducing inter-cell interference in a wireless communication system. A method of transmitting channel state information (CSI) measurement resource information by a base station includes determining first and second subframe sets, in which CSI measurement will be performed, among a plurality of downlink subframes, transmitting information indicating the first and second subframe sets to a terminal, and receiving the CSI of each of the first and second subframe sets from the terminal. A subframe belonging to the first subframe set and a subframe belonging to the second subframe set do not overlap, and some of the plurality of subframes do not belong to either of the first and second subframe sets. 1. A method of transmitting channel state information (CSI) measurement resource information by a base station , comprising:determining first and second subframe sets, in which CSI measurement will be performed, among a plurality of downlink subframes;transmitting information indicating the first and second subframe sets to a terminal; andreceiving the CSI of each of the first and second subframe sets from the terminal,wherein a subframe belonging to the first subframe set and a subframe belonging to the second subframe set do not overlap, andwherein some of the plurality of subframes do not belong to either of the first and second subframe sets.2. The method according to claim 1 , wherein the base station determines the first and second subframe sets using information indicating a subset of blank subframes of a neighbor cell.3. The method according to claim 1 , wherein the first subframe set includes a subframe in which a probability of being set as a blank subframe by a neighbor cell is higher than that of the second subframe set.4. A method of performing channel state information (CSI) measurement by a terminal claim 1 , comprising: ...

METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING DOWNLINK CONTROL CHANNEL FOR CONTROLLING INTER-CELL INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system, and more particularly, to a method and device for transmitting and receiving a downlink control channel for controlling inter-cell interference in a wireless communication system. An embodiment of the present invention provides a method for transmitting a downlink control channel from a base station to a terminal, and the method may comprise: a step of determining whether a downlink subframe is of a first type or a second type; and a step in which if the downlink subframe is of the first type, the number of OFDM symbols for transmitting the downlink control channel is set to a preset value (N), and the downlink control channel is transmitted using N OFDM symbols. 1. A method of transmitting a downlink control channel , which is transmitted to a user equipment by a base station , comprising the steps of:determining whether a downlink subframe corresponds to a first type subframe or a second type subframe;setting a number of OFDM (orthogonal frequency division multiplexing) symbols used for a transmission of the downlink control channel to a predefined number (N) if the downlink subframe corresponds to the first type subframe, and transmitting the downlink control channel on the OFDM symbols amounting to a number equal to the N.2. The method of claim 1 , wherein information on the number of the OFDM symbols used for the transmission of the downlink control channel is not transmitted in the downlink subframe corresponding to the first type subframe.3. The method of claim 1 , further comprising the steps of:if the downlink subframe corresponds to the second type subframe, transmitting information on the number of the OFDM symbols used for the transmission of the downlink control channel via PCFICH (physical control format indicator channel), and transmitting the downlink control channel on the OFDM symbols amounting the a number equal to the information transmitted via the PCFICH.4. The method of claim 1 ...

METHOD OF PERFORMING MEASUREMENT AT UE IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREOF

A method of performing measurement at a user equipment (UE) in a wireless communication system is disclosed. The method includes receiving channel status information-reference signals (CSI-RSs) for channel status information feedback from a plurality of transmission points (TPs), performing radio resource management (RRM) measurement based on the CSI-RSs, and selecting one or more TPs for receiving a signal from among the plurality of TPs based on the result of measurement. 1. A method of performing measurement at a user equipment (UE) in a wireless communication system , the method comprising:receiving channel status information-reference signals (CSI-RSs) for channel status information feedback from a plurality of transmission points (TPs);performing radio resource management (RRM) measurement based on the CSI-RSs; andselecting one or more TPs for receiving a signal from among the plurality of TPs based on the result of measurement.2. The method according to claim 1 , further comprising receiving CSI-RS setting information for the plurality of TPs through a higher layer.3. The method according to claim 2 , wherein the CSI-RS setting information includes an indicator indicating whether the CSI-RSs are used for RRM measurement in addition to channel status information feedback.4. The method according to claim 1 , wherein the plurality of TPs have the same cell identifier.5. The method according to claim 1 , wherein the CSI-RSs transmitted from the plurality of TPs are distinguished by at least one of an antenna port claim 1 , a subframe offset and a CSI-RS reuse pattern.6. The method according to claim 1 , wherein performing the RRM measurement includes measuring at least one of received signal strength indicator (RSSI) claim 1 , reference signal received power (RSRP) claim 1 , reference signal received quality (RSRQ) and path loss.7. The method according to claim 1 , wherein the plurality of TPs transmits the same cell-specific RS to the UE.8. A user equipment (UE) ...

METHOD FOR MITIGATING INTER CELL INTERFERENCE AND DEVICE THEREFOR

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device therefor, wherein the method comprises the steps of: receiving a PDCCH signal that contains scheduling information from a base station on a first subframe; receiving a PDSCH signal corresponding to said PDCCH signal from said base station on a second subframe; and decoding said PDSCH signal, wherein an interval between said first subframe and said second subframe is varied. 1. A method for receiving a downlink signal in a user equipment of a wireless communication system , the method comprising the steps of:receiving a physical downlink control channel (PDCCH) signal, which includes scheduling information, from a base station on a first subframe;receiving a physical downlink shared channel (PDSCH) signal corresponding to the PDCCH signal, from the base station on a second subframe; anddecoding the PDSCH signal,wherein an interval between the first subframe and the second subframe is varied.2. The method according to claim 1 , wherein the interval between the first subframe and the second subframe is varied by predetermined information within the PDCCH signal.3. The method according to claim 1 , wherein the interval between the first subframe and the second subframe is varied by considering at least one of carrier configuration for the user equipment and a value of a carrier indication field within the PDCCH signal.4. The method according to claim 3 , wherein claim 3 , if a single carrier is configured for the user equipment claim 3 , the value of the carrier indication field is used to indicate the second subframe claim 3 , if a multi-carrier is configured for the user equipment claim 3 , the value of the carrier indication field is used to indicate a carrier to which the PDSCH signal is transmitted claim 3 , and the first subframe and the second subframe are given equally.5. The method according to claim 3 , wherein claim 3 , ...

METHOD OF REDUCING INTERCELL INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREOF

A method for processing a signal processing at a user equipment in a wireless communication system is disclosed. The method includes receiving an interference measurement subframe set from a serving cell, receiving first Channel Status Information (CSI) configuration information and second CSI configuration information from the serving cell, measuring CSI based on the first CSI configuration information in a subframe designated in the interference measurement subframe set and reporting the CSI to the serving cell, and measuring the CSI based on the second CSI configuration information in a subframe which is not designated in the interference measurement subframe set and reporting the CSI to the serving cell. 1. A signal processing method of a user equipment in a wireless communication system , comprising:receiving an interference measurement subframe set from a serving cell;receiving first Channel Status Information (CSI) configuration information and second CSI configuration information from the serving cell;in a subframe designated in the interference measurement subframe set, measuring CSI based on the first CSI configuration information and reporting the CSI to the serving cell; andin a subframe which is not designated in the interference measurement subframe set, measuring the CSI based on the second CSI configuration information and reporting the CSI to the serving cell.2. The signal processing method according to claim 1 , wherein the interference measurement subframe set is received from a neighbor cell by the serving cell through an X2 interface.3. The signal processing method according to claim 2 , wherein the neighbor cell configures the subframe designated in the interference measurement subframe set as an Almost Blank Subframe (ABS) and/or a Multicast Broadcast Single Frequency Network (MBSFN) subframe.4. The signal processing method according to claim 2 , wherein the neighbor cell performs joint processing transmission for the user equipment together ...

Method and device for transmitting/receiving downlink reference signal in wireless communication system

The present invention relates to a wireless communication system, and discloses a method and a device for transmitting/receiving a downlink reference signal in a wireless communication system. The present invention provides a way for maintaining orthogonality of a reference signal between cells in a multi-cell operation.

METHOD FOR TRANSMITTING/RECEIVING CONTROL CHANNEL IN MULTICELL COOPERATIVE WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

Disclosed is a method for a terminal to receive a control channel in a wireless communication system. More particularly, the present invention comprises the steps of: receiving a common control channel from a base station; determining an effective channel between the base station and the terminal according to a flag bit of the terminal being indicated in the common control channel; and receiving a terminal specific control channel from the base station on the basis of the effective channel, wherein the terminal specific control channel is space-multiplexes with terminal specific control channels of other terminals controlled by the base station. 1. A method of receiving a control channel by a user equipment in a wireless communication system , the method comprising the steps of:receiving a common control channel from a base station;determining an effective channel between the base station and the user equipment in accordance with a flag bit of the user equipment indicated by the common control channel; andreceiving a UE-specific (user equipment-specific) control channel from the base station based on the effective channel.2. The method of claim 1 , further comprising:receiving a reference signal from the base station; andmeasuring a channel state between the base station and the user equipment using the reference signal.3. The method of claim 2 , further comprising:calculating a precoding matrix for the UE-specific control channel based on the measured channel state; andtransmitting the calculated precoding matrix to the base station.4. The method of claim 3 , wherein effective channel determining the effective channel comprises:if the flag bit is set to 1, determining the effective channel by applying the calculated precoding matrix to the measured channel state; andif the flag bit is set to 0, determining the effective channel by applying a unitary matrix to the measured channel state.5. The method of claim 3 , wherein the precoding matrix for the UE-specific ...

METHOD FOR TRANSMITTING CONTROL CHANNEL IN MULTICELL COOPERATIVE WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

Disclosed is a method for transmitting a control channel in a multicell cooperative wireless communication system. More particularly, the present invention comprises the steps of: a 1transmitting end transmitting a control channel and a data channel, and at least one 2transmitting end transmitting only the data channel, in a 1subframe; and the 1transmitting end transmitting only the data channel and the at least one 2transmitting end transmitting the control channel and the data channel, in a 2subframe, wherein the data channel transmitted by the at least one 2transmitting end in the 1subframe is decoded on the basis of the control channel transmitted by the at least one 2transmitting end in the 2subframe. 1. A method of transmitting a downlink signal in a multi-cell cooperative wireless communication system , the method comprising:{'sup': st', 'nd', 'st, 'transmitting a control channel and a data channel from a 1transmitting end and transmitting the data channel only by at least one 2transmitting end, in a 1subframe; and'}{'sup': st', 'nd', 'nd, 'transmitting the data channel only from the 1transmitting end and transmitting the control channel and the data channel from the at least one 2transmitting end, in a 2subframe,'}{'sup': nd', 'st', 'nd', 'nd, 'wherein the data channel transmitted from the at least one 2transmitting end in the 1subframe is decoded based on the control channel transmitted from the at least one 2transmitting end in the 2subframe.'}2. The method of claim 1 , wherein the data channel transmitted from the at least one 2transmitting end in the 1subframe comprises the data channel for a coordinated communication transmitted from the 1transmitting end and the at least one 2transmitting end to a specific user equipment.3. The method of claim 2 , further comprising transmitting a control channel for decoding the data channel for the coordinated communication from the at least one 2transmitting end in the 1subframe.4. The method of claim 1 , wherein:{' ...

METHOD AND DEVICE FOR CONTROLLING INTERFERENCE BETWEEN CELLS IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and a device for a serving cell to control the interference between cells in a time division duplex (TDD) wireless communication system, the method comprising the steps of: transmitting to a neighbor cell subframe allocation information for indicating one or more uplink (UL) subframes; and limiting UL transmission activity in the one or more of the UL subframes. 1. A method of controlling inter-cell interference at a serving cell in a time division duplex (TDD) wireless communication system , the method comprising:transmitting subframe allocation information indicating one or more uplink (UL) subframes to a neighboring cell; andrestricting UL transmission activity in the one or more UL subframes.2. The method according to claim 1 , wherein:radio frames of the serving cell and the neighboring cell have different uplink-downlink (UL-DL) configurations, andthe one or more UL subframes collide with a downlink (DL) subframe of the neighboring cell.3. The method according to claim 1 , wherein the subframe allocation information includes a bitmap used to indicate a DL almost blank subframe (ABS) pattern and one or more bits corresponding to one or more UL subframes in the bitmap are configured to predetermined values.4. The method according to claim 1 , wherein the restricting the UL transmission activity includes restricting UL scheduling to a predetermined User Equipment (UE) of the serving cell.5. The method according to claim 4 , further comprising receiving information indicating the predetermined UE from the neighboring cell.6. The method according to claim 5 , wherein the predetermined UE is determined based on a UL measurement value generated by a UE of the neighboring cell and the UL measurement value is a measurement value of a UL signal transmitted from a UE located within the serving cell.7. The method according to claim 6 , wherein the ...

RETRANSMISSION METHOD FOR DYNAMIC SUBFRAME SETTING IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR SAME

Disclosed is a method for allowing a terminal to transmit and receive signals to and/from a base station in a wireless communication system using a time division multiplexing method. Specifically, the method comprises the steps of: receiving a request signal for resetting into a second uplink/downlink setting while transmitting and receiving a signal according to a first uplink/downlink setting; terminating an uplink retransmission process associated with a specific uplink subframe when the use of the specific uplink subframe is changed into a downlink subframe according to the second uplink/downlink setting; and applying the second uplink/downlink setting at a specific time point to transmit and receive signals. 1. A method for transceiving a signal to/from a base station (BS) by a user equipment (UE) in a time division multiplexing (TDM) wireless communication system , the method comprising:receiving a reconfiguration request signal for a second uplink(UL)/downlink(DL) configuration while signals are transceived according to a first UL/DL configuration;if a use of a specific uplink (UL) subframe is changed to use of a downlink (DL) subframe by the second UL/DL configuration, terminating an uplink (UL) retransmission process associated with the specific UL subframe; andtransceiving signals using the second UL/DL configuration at a specific time.2. The method according to claim 1 , wherein the reconfiguration request signal is received through a higher layer.3. The method according to claim 1 , wherein the terminating of the UL retransmission process includes:setting a response of a signal transmitted to the specific UL subframe to an acknowledgment (ACK).4. The method according to claim 3 , further comprising:receiving a signal indicating deactivated decoding of a response of the signal transmitted to the specific UL subframe.5. The method according to claim 1 , further comprising:receiving information regarding an application timing point of the second UL/DL ...

Method for receiving downlink signal and method for transmitting same, and device for receiving same and device for transmitting same

The present invention relates to a method for a transmission device to transmit data and a reference signal for demodulation for the data, to a reception device. The transmission device of the present invention appropriately configures the reference signal for demodulation of the data being transmitted to the reception device by the transmission device, and transmits the reference signal to the reception device with the data. According to embodiments of the present invention, the demodulation performance for the data transmitted from the transmission device to the reception device is enhanced.

METHOD FOR TRANSMITTING/RECEIVING SIGNAL BETWEEN BASE STATION AND RELAY NODE IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

Disclosed in the present invention is a method for a transmitting end to transmit a downlink signal to a receiving end in a wireless communication system. More particularly, the present invention comprises the steps of mapping a downlink control channel to a specific resource block pair among one or more resource block pairs; mapping a downlink data channel to a 2slot of the specific resource block pair and another resource block pairs of the one or more resource block pairs; and transmitting the downlink control channel and the downlink data channel to the receiving end, wherein a number of a spatial resource for the downlink control channel mapped to the 2slot of the specific resource block pair is limited to be equal to or smaller than a predetermined number. 1. A method of transmitting a downlink signal to a receiving end by a transmitting end in a wireless communication system , the method comprising:mapping a downlink control channel to a specific resource block pair among one or more resource block pairs;{'sup': 'nd', 'mapping a downlink data channel to a 2slot of the specific resource block pair and another resource block pairs of the one or more resource block pairs; and'}transmitting the downlink control channel and the downlink data channel to the receiving end,{'sup': 'nd', 'wherein a number of a spatial resource for the downlink control channel mapped to the 2slot of the specific resource block pair is limited to be equal to or smaller than a predetermined number.'}2. The method of claim 1 , wherein:the spatial resource is a layer, andthe predetermined number is 4.3. The method of claim 1 , wherein:the downlink data channel carries maximum 2 codewords, and{'sup': 'nd', 'the downlink data channel mapped to the 2slot of the specific resource block pair carries 1 codeword only.'}4. The method of claim 1 , wherein a number of the spatial resource for the downlink control channel is limited to be equal to or smaller than a specific number.5. The method of ...

METHOD FOR SENDING AND RECEIVING SIGNALS FOR ALLEVIATING INTER-CELL INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM AND A DEVICE THEREFOR

Disclosed is a method whereby a terminal sends and receives signals between itself and a serving cell in a wireless communication system. More specifically, the invention comprises the steps of: receiving information relating to a default bandwidth and an allocation bandwidth from the serving cell; and, if the terminal is positioned at a cell edge, either sending an uplink signal to the serving cell or receiving a downlink signal from the serving cell on the basis of the allocation bandwidth, and, here, the allocation bandwidth is either smaller than or the same as the default bandwidth. 1. A method of transceiving a signal , which is transceived with a serving cell by a user equipment in a wireless communication system , comprising the steps of:receiving an information on a default bandwidth and an information on an assigned bandwidth from the serving cell; andif the user equipment is located at a cell edge, transmitting an uplink signal to the serving cell based on the assigned bandwidth or receiving a downlink signal from the serving cell based on the assigned bandwidth,wherein the assigned bandwidth is equal to or smaller than the default bandwidth.2. The method of claim 1 , wherein at least one symbol transmitted on a control channel of a neighbor cell is excluded from a resource for transmitting the uplink signal.3. The method of claim 1 , wherein the assigned bandwidth defines a resource for an uplink signal transmission of the user equipment located at the cell edge or a resource for a downlink signal reception of the user equipment located at the cell edge.4. The method of claim 1 , wherein the information on the default bandwidth is received through an MIB (mast information block) transmitted from the serving cell and wherein the information on the assigned bandwidth is received through an RRC (radio resource control) layer from the serving cell.5. The method of claim 1 , wherein when the user equipment is located at a cell center claim 1 , the uplink ...

METHOD FOR TRANSMITTING/RECEIVING DOWNLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

Disclosed in the present invention is a method for a terminal to receive a downlink signal from a base station in a wireless communication system. More particularly, the present invention comprises the steps of: receiving downlink control information from the base station in a data region of a first subframe; and receiving downlink data in a data region of a second subframe, on the basis of the downlink control information, wherein the second subframe is a subframe available after a preset number of subframes from the first subframe. 1. A method for receiving a downlink signal from an eNode B at a user equipment in a wireless communication system , comprising:receiving a downlink control information from the eNode B in a data region of a first subframe; andreceiving a downlink data in a data region of a second subframe based on the downlink control information,wherein the second subframe corresponds to an available subframe appearing after a predetermined number of subframe from the first subframe.2. The method according to claim 1 , wherein the predetermined number is represented by an offset value of an index of the second subframe for an index of the first subframe.3. The method according to claim 2 , wherein the downlink control information comprises an information on the offset value.4. The method according to claim 1 , wherein the downlink control information comprises a scheduling information on a plurality of subframes.5. The method according to claim 4 , wherein the downlink control information comprises a scheduling information on a predefined third subframe and a scheduling information on the second subframe and wherein the second subframe corresponds to an available subframe appearing after a predetermined number of subframe from the third subframe.6. The method according to claim 1 , wherein the available subframe corresponds to a subframe capable of performing a downlink transmission.7. A user equipment in a wireless communication system claim 1 , ...

METHOD AND DEVICE FOR RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a method of receiving data by equipment in a wireless communication system and includes performing blind decoding an enhanced physical downlink channel (EPDCCH) in which a plurality of pieces of downlink control information (DCI) are transmitted; and decoding data on a physical downlink shared channel by using downlink-assigned DCI among the decoded DCI pieces, wherein if the downlink-assigned DCI corresponds to fallback mode DCI, demodulation reference signal information for decoding the EPDCCH to which the downlink-assigned DCI except for the fallback mode DCI is transmitted, is used for decoding the data on the physical downlink shared channel. 1. A method for allowing a user equipment to receive data in a wireless communication system , the method comprising the steps of:performing blind decoding for an enhanced physical downlink channel (EPDCCH) in which a plurality of downlink control information (DCI) are transmitted; anddecoding data of a physical downlink shared channel by using downlink allocation DCI among the decoded DCI,wherein, if the downlink allocation DCI corresponds to fallback mode DCI, demodulation reference signal information for decoding of the EPDCCH, in which the downlink allocation DCI except for the fallback mode DCI is transmitted, is used for data decoding of the physical downlink shared channel.2. The method according to claim 1 , wherein claim 1 , if the downlink allocation DCI is transmitted on two or more physical resource block pairs claim 1 , the demodulation reference signal information for decoding of the EPDCCH is associated with a physical resource block pair having the lowest antenna port index among the two or more physical resource block pairs.3. The method according to claim 1 , wherein claim 1 , if the downlink allocation DCI is transmitted on one physical resource block pair claim 1 , the demodulation reference signal information for decoding of the EPDCCH is one antenna port selected from ...

DEMODULATION-REFERENCE-SIGNAL TRANSMISSION METHOD AND DEVICE IN A WIRELESS COMMUNICATION SYSTEM

The present invention concerns a method whereby a base station transmits a demodulation reference signal in a wireless communication system, and the demodulation-reference-signal transmission method comprises the step of transmitting a reference-signal sequence mapped onto a resource element on a carrier wave, wherein the position of the resource element onto which the reference signal sequence has been mapped is set so as to respectively differ in accordance with one or more of: the carrier wave type; wherein a cell-specific reference signal has been transmitted; the multiplexing method; and the position of the resource block where the resource element is contained. 1. A method for transmitting a demodulation reference signal (DMRS) by a base station (BS) in a wireless communication system , comprising:transmitting a reference signal sequence mapped to a resource elements (REs) on a carrier,wherein a position of RE mapped to the reference signal sequence is differently configured according to at least one of a carrier type, transmission or non-transmission of a cell-specific reference signal, a multiplexing scheme, and a position of a resource block (RB) including the resource elements (REs).2. The method according to claim 1 , wherein:if a physical downlink control channel (PDCCH) is not transmitted on the carrier, the resource elements (REs) mapped to the reference signal sequence is present not only in OFDM symbols (#1, #2) of a first slot, but also in OFDM symbols (#5, #6) of a second slot.3. The method according to claim 2 , wherein:if transmission of a synchronous signal of the base station (BS) is carried out at the last OFDM symbol of a second slot,the resource elements (REs) mapped to the reference signal sequence is present not only in OFDM symbols (#1, #2) of a first slot, but also in OFDM symbols (#2, #3) of a second slot.4. The method according to claim 1 , wherein:if a physical downlink control channel (PDCCH) and the cell-specific reference signal ...

METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING DISCOVERY SIGNAL IN WIRELESS COMMUNICATION SYSTEM

According to an embodiment of the present invention, a method for transmitting a discovery signal related to device to device (D2D) communication by a first UE in a wireless communication system comprises: mapping a codeword related to a discovery signal to two or more pairs of physical resource blocks (PRBs) on a time axis; and transmitting the mapped codeword, wherein a first pair of PRBs of the two or more pairs of PRBs includes a resource area for a first signal and whether an n-th (n>=2) pair of PRBs of the two or more pairs of PRBs includes the resource area for the first signal is determined according to whether a next subframe of a subframe including an (n-1)-th pair of PRBs is for an uplink transmission. 1. A method of transmitting a discovery signal related to device-to-device (D2D) communication by a first user equipment (UE) in a wireless communication system , the method comprising:mapping a codeword related to the discovery signal to at least two physical resource block (PRB) pairs on a time axis; andtransmitting the mapped codeword,wherein a first PRB pair among the at least two PRB pairs includes a resource region for a first signal, andwhether the resource region for the first signal is included in an n-th PRB pair (n>=2) among the at least two PRB pairs is determined based on whether a subframe subsequent to a subframe including an (n-1)th PRB pair is for uplink transmission.2. The method according to claim 1 , wherein the n-th PRB pair includes the resource region for the first signal when the subframe subsequent to the subframe including the (n-1)th PRB pair is for downlink transmission.3. The method according to claim 1 , wherein a subframe including a last PRB pair includes a guard period.4. The method according to claim 3 , wherein a length of the guard period is related to a maximum timing advance in a cell including the first UE when a subframe subsequent to the subframe including the last PRB pair among the at least two PRB pairs is for ...

METHOD FOR ENABLING TERMINAL TO TRANSMIT AND RECEIVE SIGNAL IN WIRELESS COMMUNICATIONS SYSTEM AND APPARATUS THEREFOR

The present invention relates to a method for enabling a terminal to transmit and receive a signal in a wireless communications system and an apparatus therefor. More specifically, the method includes the steps of: receiving physical downlink shared channel (PDSCH) data and reconfiguration downlink control information (DCI); and transmitting at least one of the information of ACK/NACK (acknowledgement/Negative Acknowledgement) for downlink data and the answer message corresponding to the reconfiguration downlink control information, characterized in that the answer message represents whether to succeed in receiving the reconfiguration downlink control information. 1. In a user equipment of a wireless communication system , a method of transceiving signals , comprising the steps of:receiving downlink data (physical downlink shared channel, PDSCH) and a reconfiguration downlink control information (reconfiguration DCI); andtransmitting at least one of an ACK/NACK (acknowledgement/negative acknowledgement) information in response to the downlink data and a confirmation message in response to the reconfiguration downlink control information,wherein the confirmation message indicates success or failure in receiving the reconfiguration downlink control information.2. The method of claim 1 , wherein the ACK/NACK information is transmitted based on a channel selection scheme.3. The method of claim 2 , wherein if the confirmation message and the ACK/NACK information are transmitted in a same subframe claim 2 , the confirmation message is bundled with the ACK/NACK information.4. The method of claim 2 , wherein the confirmation message is bundled with an ACK/NACK information corresponding to a codeword transmitted in a predefined specific downlink subframe.5. The method of claim 2 , wherein if the confirmation message and the ACK/NACK information are transmitted in a same subframe claim 2 , the confirmation message is considered to indicate ACK/NACK in response to the downlink ...

METHOD FOR TRANSMITTING DOWNLINK CONTROL INFORMATION OF DYNAMICALLY VARIABLE SIZE IN WIRELESS COMMUNICATION SYSTEM AND DEVICE FOR SAME

A method in a wireless communication system is disclosed. More particularly, the method comprises the steps of: detecting first downlink control information from a base station; and, on the basis of the first downlink control information, receiving from the base station second downlink control information comprising scheduling information for uplink data transmission or downlink data reception, wherein the first downlink control information comprises an indicator for indicating whether the scheduling information is scheduling information of a transmission block level or scheduling information of one or more code block levels comprising the transmission block. 1. A method of , at a user equipment (UE) , receiving downlink control information from a base station in a wireless communication system , the method comprising:detecting first downlink control information from the base station; andreceiving second downlink control information including scheduling information for uplink data transmission or downlink data reception from the base station based on the first downlink control information,wherein the first downlink control information includes an indicator indicating whether the scheduling information is scheduling information of a transport block level or scheduling information of at least one code block level configuring the transport block.2. The method according to claim 1 , further comprising configuring at least one of whether uplink data of the at least one code block level is transmitted or whether downlink data of at least one code block level is received claim 1 , through a higher layer.3. The method according to claim 1 , wherein claim 1 , when a new data indicator (NDI) included in the first downlink control information is not toggled claim 1 , the second downlink control information includes scheduling information for retransmission of the at least one code block level.4. The method according to claim 3 , wherein the second downlink control information ...

METHOD FOR RECEIVING DOWNLINK CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

The present invention discloses a method and device for receiving a downlink control channel according to various embodiments. A method and device are disclosed, the method for receiving a downlink control channel according to an aspect of the present invention includes: a step for receiving a subframe including a downlink control region; and a step for performing blind decoding on a search space in the downlink control region, wherein the search space includes a plurality of PDCCH candidates which correspond to respective aggregation levels and include control channel elements (CCEs), and each of the plurality of PDCCH candidates overlaps at least one PDCCH candidate. 1. A method of receiving a downlink control channel by a user equipment (UE) in a wireless communication system , the method comprising:receiving at least one symbol including a downlink control region; andperforming blind decoding on a search space in the downlink control region,wherein the search space includes a plurality of physical downlink control channel (PDCCH) candidates, each PDCCH candidate related to an aggregation level and including a control channel element (CCE), andwherein each of the plurality of PDCCH candidates overlaps with at least one PDCCH candidate.2. The method according to claim 1 , wherein the plurality of PDCCH candidates include a first PDCCH candidate related to a first aggregation level claim 1 , and a second PDCCH candidate related to a second aggregation level lower than the first aggregation level claim 1 , andwherein the second PDCCH candidate is fully or partially included in the first PDCCH candidate.3. The method according to claim 2 , wherein the first aggregation level is a highest of aggregation levels related to the plurality of PDCCH candidates.4. The method according to claim 2 , wherein the first PDCCH candidate is a PDCCH candidate in a common search space claim 2 , and the second PDCCH candidate is a PDCCH candidate in a UE-specific search space.5. The ...

RETRANSMISSION METHOD FOR DYNAMIC SUBFRAME SETTING IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR SAME

Disclosed is a method for allowing a terminal to transmit and receive signals to and/from a base station in a wireless communication system using a time division multiplexing method. Specifically, the method comprises the steps of: receiving a request signal for resetting into a second uplink/downlink setting while transmitting and receiving a signal according to a first uplink/downlink setting; terminating an uplink retransmission process associated with a specific uplink subframe when the use of the specific uplink subframe is changed into a downlink subframe according to the second uplink/downlink setting; and applying the second uplink/downlink setting at a specific time point to transmit and receive signals. 112-. (canceled)13. A method for performing a hybrid automatic repeat request-acknowledgement (HARQ-ACK) procedure by a user equipment in a wireless communication system , the method comprising:receiving system information including a first TDD (Time Division Duplex) uplink-downlink configuration;receiving a TDD configuration, via a RRC(Radio Resource Control) signaling, that includes a second TDD uplink-downlink configuration and a HARQ reference configuration;receiving downlink data according to the first TDD uplink-downlink configuration;reconfiguring an uplink-downlink configuration from the first TDD uplink-downlink configuration to the second TDD uplink-downlink configuration; andtransmitting HARQ-ACK/NACK(HARQ-ACK/Negative ACK) corresponding to the downlink data procedure in the second uplink-downlink configuration based on the first TDD uplink-downlink configuration and the HARQ reference configuration for the reconfiguring the uplink-downlink configuration.14. The method of further comprising:receiving a reconfiguration command, wherein reconfiguring the uplink-downlink configuration from the first TDD uplink-downlink configuration to the second TDD uplink-downlink configuration is triggered by the receipt of the reconfiguration command.15. The ...

METHOD AND APPARATUS FOR RECEIVING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

Disclosed is a method for receiving control information, one embodiment of the present invention, in which a terminal receives control information by means of an enhanced physical downlink control channel (EPDCCH) in a wireless communication system, comprising the steps of: estimating a channel in subframe N, and blind-decoding on the basis of the result of the channel estimation; and blind-decoding in subframe N+L (L>=1), wherein, if subframe N and subframe N+L are included in a single subframe bundling group (SBG), then the reference signal associated with the channel estimation in subframe N is also used for the channel estimation for blind-decoding in subframe N+L. 1. A method of receiving control information , which is received through EPDCCH (enhanced physical downlink control channel) by a user equipment in a wireless communication system , the method comprising the steps of:performing channel estimation on a subframe N;performing blind decoding based on a result of the channel estimation; andperforming the blind decoding on a subframe (N+L) (where, L>=1),wherein if the subframe N and the subframe (N+L) are included in one subframe bundling group (SBG), a reference signal related to the channel estimation in the subframe N is also used for the channel estimation for the blind decoding in the subframe (N+L).2. The method of claim 1 , wherein the user equipment assumes that a position of an EPDCCH candidate in the subframe N is identical to that in the subframe (N+L).3. The method of claim 1 , wherein starting positions of EPDCCH candidates in the subframe N and the subframe (N+L) are randomized by a value related to the SBG.4. The method of claim 3 , wherein the starting positions of the EPDCCH candidates are identical in the SBG.5. The method of claim 3 , wherein Yto the starting positions of the EPDCCH candidates is determined by a formula:{'sub': p,k', 'p', 'p,k-1', 's', 'size', 'p,−1', 'RNTI', '0', '1', 's', 'size, 'Y=(A·Y)mod D, where k=└n/(2×SBG)┘, Y=n≠0 ...

METHOD AND DEVICE FOR REPORTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM

One embodiment of the present invention relates to a method by which a terminal reports channel state information (CSI) in a wireless communication system, the channel state information reporting method comprising the steps of: deriving an interference measurement on the basis of a zero power CSI-reference signal (RS) related to a CSI-interference measurement (IM) resource configuration: calculating a channel quality information (CQI) value on the basis of the interference measurement; and transmitting CSI including the CQI value to a base station, wherein at least one RE according to the CSI-IM resource configuration is included in different ECCEs included in a PRB pair. 1. A method of reporting channel state information (CSI) , which is reported by a user equipment in a wireless communication system , comprising the steps of:deriving interference measurement based on a zero-power CSI-RS (CSI-reference signal) related to CSI-IM (CSI-interference measurement) resource configuration;calculating a CQI (channel quality information) value based on the interference measurement; andtransmitting CSI containing the CQI value to an eNB,wherein at least one or more REs according to the CSI-IM resource configuration are contained in ECCEs different from each other, which are contained in a PRB pair.2. The method of claim 1 , wherein if the REs according to the CSI-IM resource configuration are positioned at an OFDM symbol 5 and 6 claim 1 , the zero-power CSI-RS consists of 4 REs.3. The method of claim 1 , wherein if the REs according to the CSI-IM resource configuration are positioned at an OFDM symbol 9 and 10 claim 1 , the zero-power CSI-RS consists of 8 REs.4. The method of claim 1 , wherein the CSI-IM resource configuration is UE-specifically indicated by a serving cell of the user equipment.5. The method of claim 4 , wherein if the REs according to the CSI-IM resource configuration are positioned at an OFDM symbol 9 and 10 claim 4 , the zero-power CSI-RS consists of 4 REs ...

METHOD FOR TRANSMITTING AND RECEIVING SIGNAL IN WIRELESS COMMUNICATIONS SYSTEM AND APPARATUS THEREFOR

According to an embodiment of the present invention, a method for transmitting and receiving a signal in a wireless communications system includes the steps of: transmitting an uplink data in a first subframe to a base station; and receiving a reception confirmation response to the uplink data on a downlink time-frequency resource of a second subframe associated with the first subframe, wherein if the second subframe transmits a shortened DMRS (Demodulation Reference Signal), the downlink time-frequency resource is included in at least a part of REs (Resource Elements) adjacent to the RE (Resource Element) transmitting the shortened DMRS, and the RE transmitting the shortened DMRS is the cell specified one of the REs capable of being reserved for the DMRS. 1. A method for enabling a user equipment to transmit and receive a signal in a wireless communication system , the method comprising the steps of:transmitting uplink data in a first subframe to a base station; andreceiving an acknowledgement ACK for the uplink data on a downlink time-frequency resource of a second subframe associated with the first subframe,wherein, if a shortened DMRS (Demodulation Reference Signal) is transmitted in the second subframe, the downlink time-frequency resource is included in at least a part of REs (Resource Elements) adjacent to REs to which the shortened DMRS is transmitted, andthe REs to which the shortened DMRS is transmitted are determined cell-specifically among REs capable of being reserved for the DMRS.2. The method according to claim 1 , wherein the second subframe is either a subframe at which an EPHICH (Enhanced Physical Hybrid automatic repeat request Indicator Channel) is configured claim 1 , or a subframe indicated through higher layer signaling.3. The method according to claim 1 , wherein the REs to which the shortened DMRS is transmitted are determined by the least significant bit (LSB) of cell ID.4. The method according to claim 3 , wherein the REs to which the ...

METHOD AND APPARATUS FOR RECEIVING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

An embodiment of the present invention relates to a method for receiving a control signal through an enhanced physical downlink control channel (EPDCCH) by a user equipment in a wireless communication system, the method comprising: receiving a demodulation reference signal (DMRS) included in a physical resource block (PRB) pair; and monitoring an EPDCCH associated with the DMRS, wherein a minimum aggregation level or the number of enhanced resource element groups (EREGs) per enhanced control channel element (ECCE) applied to the EPDCCH is determined depending on to which interval of a plurality of predetermined intervals the number of resource elements (REs) included in the PRB pair belongs. 1. A method for receiving control information over an enhanced physical downlink control channel (EPDCCH) by a terminal in a wireless communication system , the method comprising:receiving a demodulation reference signal (DMRS) included in a physical resource block (PRB) pair; andmonitoring an EPDCCH associated with the DMRS,wherein a lowest aggregation level or the number of enhanced resource element groups (EREGs) per enhanced control element (ECCE) applied to the EPDCCH is determined depending on a range covering the number of resource elements (REs) included in the PRB pair among a plurality of preset ranges.2. The method according to claim 1 , wherein the lowest aggregation level applied to the EPDCCH is inversely proportional to the number of REs included in the PRB pair.3. The method according to claim 2 , wherein the number of EREGs per ECCE is constant regardless of the range.4. The method according to claim 1 , wherein the number of EREGs per ECCE is inversely proportional to the number of REs included in the PRB pair.5. The method according to claim 4 , wherein the lowest aggregation level applied to the EPDCCH is constant regardless of the range.6. The method according to claim 1 , wherein the range is distinguished by an integer multiple of the number of REs ...

METHOD AND APPARATUS FOR ENHANCED CONTROL CHANNEL-BASED OPERATION IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system, and more specifically, to a method and an apparatus for enhanced control channel-based operation. A method for a base station for transmitting a downlink control channel in a wireless communication system according to one embodiment of the present invention comprises the steps of: determining one antenna port to be used for the downlink control channel; mapping the downlink control channel to a resource element on the basis of a reference signal for the one antenna port; and transmitting the mapped downlink control channel to a terminal, wherein an index for the one antenna port can be determined on the basis of a control channel element (CCE) index of the downlink control channel derived from the terminal identifier. 1. A method of transmitting an Enhanced Physical Downlink Control Channel (EPDCCH) by an evolved nodeB (eNB) in a wireless communication system , the method comprising:transmitting the EPDCCH to a user equipment (UE) through one antenna port, {'br': None, 'i': n', 'd', 'X', 'L,d, '′=(nECCE mod )+(mod min()),'}, 'wherein an index of the one antenna port is determined based on a value n′ satisfying the following equation,'}wherein,nECCE is a lowest ECCE index used for transmission of the EPDCCH;d is a number of ECCEs per resource block pair;X is an identifier of the UE;L is a number of ECCEs used for the EPDCCH;mod is modulo function; andmin (L,d) is a minimum value of L and d.2. The method according to claim 1 , further comprising:mapping the EPDCCH to resource elements before the transmitting.3. A method of receiving an Enhanced Physical Downlink Control Channel claim 1 , EPDCCH claim 1 , by a user equipment (UE) in a wireless communication system claim 1 , the method comprising:determining one antenna port used for the EPDCCH; anddemodulating the EPDCCH based on a reference signal for the one antenna port, and {'br': None, 'i': n', 'd', 'X', 'L,d, '′=(nECCE mod )+(mod min()),'}, ' ...

METHOD FOR PERFORMING PDCCH MONITORING BY TERMINAL IN WIRELESS COMMUNICATION SYSTEM AND TERMINAL USING SAID METHOD

The present specification provides a method of performing physical downlink control channel (PDCCH) monitoring by a terminal in a wireless communication system, comprising the steps of: receiving, from a network, information related to power saving; and performing the PDCCH monitoring on the basis of the received information related to the power saving, wherein the information related to the power saving, which is a single piece of information, is information indicating at least one of whether the terminal is to perform a wake-up operation or whether the terminal is to perform a sleep operation. 1. A method for performing a physical downlink control channel (PDCCH) monitoring , the method performed by a user equipment (UE) and comprising:receiving, from a network, information related to a power saving;performing the PDCCH monitoring based on the information related to the power saving,wherein the information related to the power saving, which is a single piece of information, is information informing at least one of whether the UE performs a wake up operation or a sleep operation.2. The method of claim 1 , wherein the information related to the power saving is information based on N bits.3. The method of claim 1 , wherein the information related to power saving is information informing at least one of whether the UE performs an operation in a specific power state claim 1 , whether the UE performs the wake up operation claim 1 , or whether the UE performs the sleep operation.4. The method of claim 3 , wherein the specific power state includes a first power state or a second power state claim 3 ,wherein, based on the information related to the power saving informing that the UE performs the operation in the specific power state, the UE performs the PDCCH monitoring in the first power state or the second power state,wherein the first power state is a different power state than the second power state.5. The method of claim 1 , wherein claim 1 , based on the information ...

Method for measuring and reporting d2d resource in wireless communication system, and apparatus therefor

A method for measuring and reporting a D2D resource by a terminal that supports D2D communication according to an embodiment of the present invention comprises the steps of: measuring a resource usage rate of a first link that is being used by the terminal for D2D communication; transmitting a measurement report including the measured resource usage rate to a base station when the measured resource usage rate exceeds a first threshold value or less than a second threshold value; and receiving resource reallocation information for offloading the D2D communication, from the base station, wherein the resource reallocation information includes probability values indicating probabilities that the first link and the second link, which is configured in a resource different from that of the first link, will be used for the D2D communication, respectively. The terminal may offload the D2D communication performed in the first link onto the second link when the second link is selected through a link selection performed on the basis of the probability values.

METHOD AND APPARATUS FOR ENHANCED CONTROL CHANNEL-BASED OPERATION IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system, and more specifically, to a method and an apparatus for enhanced-control channel-based operation. A method for a terminal for transmitting confirmation response information in a wireless communication system according to one embodiment of the present invention comprises a step for transmitting confirmation response information for a downlink data channel by means of an uplink control channel resource, wherein an index for the uplink control channel resource can be determined on the basis of a delegate antenna port of a downlink control channel derived from the identifier of the terminal 1. A method of transmitting acknowledgement/negative-acknowledgement (ACK/NACK) information by a user equipment (UE) in a wireless communication system , the method comprising:receiving downlink control information through a downlink (DL) control channel from a eNB;transmitting ACK/NACK information through an uplink (UL) control channel resource,wherein an index of the UL control channel resource is determined based on:a start offset of the UL control channel resource region signaled via higher layer; andat least one ofan index of the antenna port used for the DL control channel transmission; ora predetermined field of a downlink control information (DCI) format of the DL control channel.2. The method according to claim 1 , wherein the index of the UL control channel resource is obtained by applying a first offset value corresponding to the index of antenna port to the start offset.3. The method according to claim 2 , wherein the index of the UL control channel resource is obtained by further applying a second offset value corresponding to the predetermined field to the start offset.4. The method according to claim 1 , wherein when the UL control channel resource and an additional UL control channel resource is used in order to transmit the ACK/NACK information claim 1 , an index of the additional UL control channel ...

METHOD AND APPARATUS FOR CONTROLLING INTER-CELL INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM

The present invention pertains to a wireless communication system, and more particularly, to a method for transmitting an uplink (UL) signal in a time division duplex (TDD) wireless communication system and an apparatus therefor, and the method comprises the following steps: receiving information limiting UL transmission activity from a serving cell; and transmitting a UL subframe in consideration of the information, wherein signal transmission of specific time-frequency resources corresponding to the information in the UL subframe is limited. 1. A method for transmitting an uplink (UL) signal in a time division duplex (TDD) wireless communication system , the method comprising:receiving information limiting UL transmission activation from a serving cell; andtransmitting a UL subframe based on the information,wherein signal transmission through specific time-frequency resources corresponding to the information in the UL subframe is limited.2. The method according to claim 1 , wherein the information includes information indicating a subframe set in which UL transmission activation is limited.3. The method according to claim 1 , wherein the information includes information indicating a specific signal corresponding to the specific time-frequency resources claim 1 , the specific signal corresponding to at least one of a reference signal (RS) claim 1 , a broadcast channel (BCH) and a synchronization channel (SCH).4. The method according to claim 1 , wherein the UL subframe includes a plurality of single carrier frequency division multiple access (SC-FDMA) symbols claim 1 , signal transmission of SC-FDMA symbols corresponding to the specific time-frequency resources being limited.5. The method according to claim 1 , wherein limitation of signal transmission through the specific time-frequency resources comprises mapping UL data to all allocated time-frequency resources including the specific time-frequency resources and then puncturing the UL data in the specific time- ...

Method and apparatus for taking measurements on neighboring cells in wireless communication systems

The present invention relates to a method by which a terminal takes measures on a neighboring cell in a wireless communication system, which includes the steps of: receiving a channel state information-reference signal (CSI-RS) transmitted from the neighboring cell by using first time information received from a serving cell; and taking measurements using the CSI-RS, wherein the first time information is generated on the basis of the second time information of a serving cell, which receives an uplink signal from the terminal, and the third time information from a neighboring cell, which receives the uplink signal.

Method and apparatus for measuring in a wireless communication system

A method for a terminal for taking a measurement in a wireless communication system according to an embodiment of the present invention comprises the steps of: measuring a reference signal strength indicator (RSSI); and determining reference signal received quality (RSRQ) from the RSSI and reference signal received power (RSRP), wherein the subframe for which the measurement is taken is directed by upper layer signaling, and if the terminal can obtain reference signal information of the neighboring cell, the RSSI is measured on the basis of an OFDM symbol, comprising a reference signal, in the subframe.

METHOD FOR TRANSMITTING/RECEIVING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR SAME

A method for receiving control information by a terminal in a wireless communication system according to one embodiment of the present disclosure may comprise the steps of: receiving a reference signal through at least one of multiple antenna ports of a base station; and blind-detecting control information of the terminal on the basis of at least one of a first transmission scheme using a single antenna port for the reference signal and a second transmission scheme using the multiple antenna ports for the reference signal, wherein a resource area for the first transmission scheme may overlap at least partially with a resource area for the second transmission scheme and, when the terminal performs blind-detection on the basis of the first transmission scheme, the terminal may perform the blind-detection on an assumption that the reference signal is transmitted according to the second transmission scheme in the overlapping resource area. 1. A method for receiving control information by a user equipment in a wireless communication system , the method comprising:receiving a reference signal via at least one of multiple antenna ports of a base station; andperforming blind detection for control information of the user equipment based on at least one of a first transmission scheme in which a single antenna port is used for the reference signal and a second transmission scheme in which multiple antenna ports are used for the reference signal,wherein a resource region for the first transmission scheme overlaps at least partially with a resource region for the second transmission scheme,wherein when the user equipment performs the blind detection based on the first transmission scheme, the user equipment performs the blind detection by assuming that the reference signal is transmitted based on the second transmission scheme in the overlapping resource region.2. The method according to claim 1 ,wherein reference signal resources of the multiple antenna ports for the second ...

Method for transmitting or receiving signal in wireless communication system and apparatus therefor

The UE is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, a base station or a network.

METHOD FOR TRANSMITTING/RECEIVING SYNCHRONIZATION SIGNAL FOR D2D COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR

The present invention relates to a method and an apparatus which enable a terminal to transmit a signal for device-to-device (D2D) communication in a wireless communication system. Specifically, the present invention transmits a synchronization signal for D2D communication and a demodulation reference signal (DM-RS) for demodulation of the synchronization signal, wherein the base sequence of the demodulation reference signal is generated using a synchronization reference ID. 1. A method of transmitting a signal by a user equipment (UE) via a communication between the UE and another UE , the method comprising:generating, by the UE, a plurality of bits for a physical channel including synchronization related information for the communication;generating, by the UE, a demodulation reference signal (DM-RS) associated with the physical channel based on an orthogonal code and a cyclic shift; andtransmitting, by the UE, the physical channel and the DM-RS,wherein the orthogonal code for the DM-RS is determined based on a synchronization identity for the communication modulo 2, andwherein the cyclic shift for the DM-RS is determined based on a first value modulo 8 and the first value is a floor function of the synchronization identity divided by 2.2. The method according to claim 1 , wherein the orthogonal code for the DM-RS is determined based on one lower bit of the synchronization identity.3. The method according to claim 1 , wherein the generated plurality of bits for the physical channel is scrambled based on the synchronization identity.4. The method according to claim 1 , wherein the physical channel is a physical broadcast channel for the communication.5. A user equipment (UE) for transmitting a signal in a communication between the UE and another UE claim 1 , the UE comprising:a radio frequency (RF) unit; anda processor configured to:generate a plurality of bits for a physical channel including synchronization related information for the communication,generate a ...

METHOD FOR PERFORMING CHANNEL ESTIMATION IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

Proposed is a method for performing the channel estimation of a physical downlink control channel (PDCCH) in a wireless communication system. Specifically, The method performed by a user equipment (UE) includes transmitting, to a base station, UE capability information related to the channel estimation, receiving, from the base station, information for a PDCCH monitoring span, and performing a channel estimation based on the information for the PDCCH monitoring span, wherein the UE capability information may include information for a maximum number of control channel elements (CCEs) capable of being channel-estimated per PDCCH monitoring span. 1. A method of performing , by a user equipment (UE) , a channel estimation of a physical downlink control channel (PDCCH) in a wireless communication system , the method comprising:transmitting, to a base station, UE capability information related to the channel estimation;receiving, from the base station, information for a PDCCH monitoring span; andperforming a channel estimation based on the information for the PDCCH monitoring span,wherein the UE capability information includes information for a maximum number of control channel elements (CCEs) capable of being channel-estimated per PDCCH monitoring span.2. The method of claim 1 ,wherein the information for the maximum number of CCEs is determined based on at least one of a length of the PDCCH monitoring span, an interval between PDCCH monitoring spans and/or a numerology.3. The method of claim 1 ,wherein the maximum number of CCEs is a number of non-overlapped CCEs.4. The method of claim 1 ,wherein the information for the maximum number of CCEs is determined based on at least one of a service type, quality of service (QoS), a service requirement and/or a processing time.5. The method of claim 1 ,wherein the information for the maximum number of CCEs is determined based on at least one of a physical downlink shared channel (PDSCH) processing time and/or physical uplink ...

METHOD FOR ALLOCATING RESOURCES FOR DOWNLINK CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM AND DEVICE FOR SAME

A method for allocating resources for a downlink control channel by a base station in a wireless communication system is disclosed. Specifically, the method comprises the steps of: mapping resource elements to resource element groups for each of resource blocks; forming control channel elements by using a predetermined number of resource element groups from among the resource element groups; and allocating control channel elements of a number corresponding to an aggregation level of the downlink control channel as resources for the downlink control channel, wherein the number of available resource elements included in each of the resource element groups or the number of available resource elements included in each of the control channel elements of a number corresponding to the aggregation level is uniform. 1. A method for allocating a resource for a downlink control channel by a base station (BS) in a wireless communication system , the method comprising:performing mapping resource elements and resource element groups to each of resource blocks;configuring control channel elements using a predetermined number of resource element groups among the resource element groups; andallocating control channel elements, the number of which corresponds to an aggregation level of the downlink control channel, as a resource for the downlink control channel,wherein the number of available resource elements included in each of the resource element groups or the number of available resource elements included in each of the control channel elements, the number of which corresponds to the aggregation level, is equivalent.2. The method according to claim 1 , wherein the number of resource elements for a reference signal included in each of the resource element groups is changed according to a type of a subframe in which the downlink control channel is transmitted.3. The method according to claim 1 , wherein the number of resource elements for a reference signal included in each of the ...

METHOD AND APPARATUS FOR TRANSMITTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a method for allowing a terminal to transmit cone or more pieces of channel state information (CSI) in a wireless communication system, and the method for transmitting the CSI comprises the steps of: determining CSI reference resources from a subframe which is to transmit the one or more pieces of CSI; and transmitting the one or more pieces of CSI measured in the CSI reference resources wherein the determination of the CSI reference resources uses measurement sets which include one or more interference measurement sets and one or more signal measurement sets, and if the CSI reference resources are included in an overlapping manner in two or more of the one or more interference measurement sets and the one or more signal measurement sets, a resource for measuring interference or a signal is separated within the CSI reference resources. 113-. (canceled)14. A method for reporting channel state information (CSI) for coordinated multi-point (CoMP) operation by a user equipment (UE) in a wireless communication system , the method comprising:receiving, by the UE from a base station (BS), interference measurement configurations and signal measurement configurations;calculating, by the UE, CSI on a CSI reference resource of a downlink subframe based on at least one of the interference measurement configurations and at least one of the signal measurement configurations, andreporting, by the UE to the BS in an uplink subframe, the CSI calculated on the CSI reference resource,wherein each of the interference measurement configurations indicates information on a first subframe for interference measurement and each of the signal measurement configurations indicates information on a second subframe for CSI-reference signal (CSI-RS) measurement,wherein the UE determines an index of the downlink subframe including the CSI reference resource based on an index of the uplink subframe for reporting the CSI, andwherein the at least one interference ...

METHOD AND APPARATUS FOR RETRANSMITTING SCHEDULING ASSIGNMENT INFORMATION IN WIRELESS COMMUNICATION SYSTEM SUPPORTING DEVICE TO DEVICE (D2D) COMMUNICATION

Disclosed is a method for retransmitting scheduling assignment (SA) information between half-duplex user equipment in a wireless communication system. The method for retransmitting SA information may comprise the steps of: receiving, through a first resource area, a D2D signal including first SA information transmitted by a second user equipment, and second SA information transmitted by a third user equipment; if the target user equipment of the second SA information is the second user equipment, determining whether to retransmit the second SA information for the second user equipment; and if it is determined to retransmit the second information, transmitting the second information through a second resource area. 1. A method of retransmitting scheduling assignment (SA) information between half-duplex user equipments in a wireless communication system , which is performed by a first user equipment , comprising:receiving a D2D signal comprising first SA information transmitted by a second user equipment and second SA information transmitted by a third user equipment through a first resource region;if a target user equipment of the second SA information is the second user equipment, determining whether to retransmit the second SA information for the second user equipment; andif it is determined to retransmit the second SA information, retransmitting the second SA information through a second resource region.2. The method of claim 1 , determining whether to retransmit the second SA information comprising claim 1 , if the first user equipment and the second user equipments belong to an identical group claim 1 , determining to transmit the associated data.3. The method of claim 1 , determining whether to retransmit the second SA information comprising determining to transmit the associated data according to on a predetermined probability.4. The method of claim 1 , determining whether to retransmit the second SA information comprising determining to transmit the associated ...

METHOD FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR

A method for receiving, by a terminal, control information in a wireless communication system, according to one embodiment of the present invention, comprises: receiving search space information for a self-contained subframe having all of a downlink control symbol, a data symbol, and an uplink control symbol; determining control channel candidates in the downlink control symbol of the self-contained subframe on the basis of the search space information; and searching for downlink control information of the terminal from the determined control channel candidates, wherein the determined control channel candidates constitute at least two or more search spaces on the downlink control symbol, and the terminal can search for the downlink control information assuming a transmission scheme specific to a search space to which each control channel candidate belongs. 1. A method for receiving , by a user equipment (UE) , control information in a wireless communication system , the method comprising:receiving search space information on a self-contained subframe having all of a downlink control symbol, a data symbol, and an uplink control symbol;determining control channel candidates in the downlink control symbol of the self-contained subframe based on the search space information; andsearching for downlink control information of the UE from the determined control channel candidates,wherein the determined control channel candidates constitute at least two search spaces on the downlink control symbol, andwherein the UE searches for the downlink control information by assuming a transmission scheme that is specific to a search space to which each control channel candidate belongs.2. The method according to claim 1 , wherein the transmission scheme specific to the search space is one of a transmission diversity scheme and a UE-dedicated beamforming scheme.3. The method according to claim 1 , wherein the at least two search spaces are configured by applying different control ...

METHOD FOR SYNCHRONIZATION SIGNAL TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM

A method of transmitting a device-to-device (D2D) synchronization signal (SS) in a wireless communication system, includes transmitting to a first D2D user equipment (UE), by a second D2D UE, a primary D2D SS including ID information, the ID information informing whether the second D2D UE is an in-coverage UE or an out-of-coverage UE; and transmitting to the first D2D UE, by the second UE, a secondary D2D SS based on the primary D2D SS, wherein the primary D2D SS is transmitted on a same subframe as the secondary D2D SS and a physical sidelink broadcast channel (PSBCH), and wherein a transient period is included in a transmission region of the secondary D2D SS. 1. A method of transmitting a device-to-device (D2D) synchronization signal (SS) in a wireless communication system , the method comprising:transmitting to a first D2D user equipment (UE), by a second D2D UE, a primary D2D SS including ID information, the ID information informing whether the second D2D UE is an in-coverage UE or an out-of-coverage UE; andtransmitting to the first D2D UE, by the second UE, a secondary D2D SS based on the primary D2D SS,wherein the primary D2D SS is transmitted on a same subframe as the secondary D2D SS and a physical sidelink broadcast channel (PSBCH), andwherein a transient period is included in a transmission region of the secondary D2D SS.2. The method of claim 1 , wherein claim 1 ,the ID information is less than a predetermined value in a first state that the second D2D UE is the in-coverage UE, andthe ID information is greater than a predetermined value in a second state that the second D2D UE is the out-of-coverage UE.3. The method of claim 1 ,wherein the transient period included in the transmission region of the secondary D2D SS is between the PSBCH and the secondary D2D SS.4. The method of claim 1 , wherein transmit power of the PSBCH and transmit power of the secondary D2D SS have different values.6. The second D2D UE of claim 5 , wherein claim 5 ,the ID information ...

Method whereby user equipment operates in wireless communication system, and device for supporting same

Disclosed are a method whereby user equipment operates in a wireless communication system, and a device for supporting same. Disclosed more particularly are: a method whereby, in case a base station which operates multiple analogue beams is connected to user equipment, the user equipment determines a cell-level radio link failure (RLF) and a beam-level RLF through signal transmission and reception to and from the base station and carries out an operation based on the determination; and a device for supporting said method.

METHOD FOR PERFORMING HIGH-SPEED HANDOVER IN BASE STATION COOPERATIVE WIRELESS COMMUNICATION SYSTEM, AND DEVICE FOR SAME

Disclosed in the present application is a method for a terminal to perform a handover in a wireless communication system. In particular, the method comprises the steps of: receiving a random access triggering signal from a serving cell; executing a random access procedure with a target cell on the basis of the random access triggering signal; receiving a downlink signal from the serving cell and transmitting an uplink signal to the target cell; receiving, from the serving cell, a message ordering a handover to the target cell; and transmitting, to the target cell, a predetermined message indicating the completed handover, on the basis of the message ordering a handover. 1. A method for performing handover by a user equipment in a wireless communication system , the method comprising:receiving a random access triggering signal from a serving cell;performing a random access procedure with a target cell based on the random access triggering signal;receiving a downlink signal from the serving cell and transmitting an uplink signal to the target cell;receiving a handover command message indicating handover to the target cell from the serving cell; andtransmitting a prescribed message indicating completion of handover to the target cell based on the handover command message.2. The method according to claim 1 , wherein the handover command message includes information indicating that the random access procedure is omitted.3. The method according to claim 2 , wherein the handover command message includes information about a temporary user equipment identity to be used by the user equipment in the target cell.4. The method according to claim 2 , wherein the handover command message includes information for transmitting a scheduling request message by the user equipment to the target cell.5. The method according to claim 1 , wherein the serving cell is a macro base station and the target cell is a pico base station.6. The method according to claim 1 , wherein the serving cell ...

METHOD AND DEVICE FOR SENDING AND RECEIVING SIGNALS IN WIRELESS COMMUNICATION SYSTEM

An embodiment of the present invention concerns a method whereby a base station transmits signals in a wireless communication system. The signal transmission method which comprises a step of transmitting a downlink signal in a first subframe set for uplink use, wherein the transmission timing of the first subframe is determined by means of a second subframe that precedes the first subframe, and a time value for a terminal receiving the first subframe is used in the second subframe. 1. A method for transmitting a signal by a base station in a wireless communication system , comprising:transmitting a downlink signal in a first subframe configured to be used for uplink,wherein transmission timing of the first subframe is determined by a second subframe preceding the first subframe,wherein a time value for a user equipment receiving the first subframe is applied to the second subframe.2. The method according to claim 1 , wherein claim 1 , when a third subframe is configured to be used for downlink claim 1 , a predetermined signal is transmitted before the third subframe is transmitted after transmission of the first subframe claim 1 , the third subframe being a subframe subsequent to the first subframe.3. The method according to claim 2 , wherein the time value is a time between transmission of the first subframe and transmission of the third subframe.4. The method according to claim 1 , wherein transmission power in the first subframe is set to be lower than transmission power of the third subframe.5. The method according to claim 2 , wherein the predetermined signal is one of a signal appointed for power tracking between the user equipment and the base station or a dummy signal.6. The method according to claim 1 , wherein the second subframe is one of a special subframe or an uplink subframe subsequent to the special subframe.7. A method for receiving a signal by a user equipment in a wireless communication system claim 1 , comprising:receiving a predetermined time ...

Method and apparatus for acquiring synchronization for device to device terminal in wireless communication system

Disclosed is a method for acquiring a synchronization by a device to device (D2D) terminal in a wireless communication system, according to an embodiment of the present invention, the method comprising the steps of: measuring D2D synchronization signal reception power and/or D2D synchronization signal reception quality from a D2D synchronization signal; selecting a D2D synchronization signal to be used for synchronization acquisition on the basis of the measurement result; and acquiring a synchronization from the selected D2D synchronization signal, wherein the D2D synchronization signal reception quality is a value obtained by dividing the D2D synchronization signal reception power by the differential between total reception power and the D2D synchronization signal reception power.

METHOD AND DEVICE FOR RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM

A method for a terminal to receive a signal in a wireless communication system according to one embodiment of the present invention comprises a step for confirming whether a configuration change exists for a cell-specific reference signal (CRS) of a neighboring cell, and if the CRS configuration is changed for a neighboring cell, the method for receiving s signal comprises the steps of: receiving system information of the neighboring cell and acknowledging the changed CRS configuration thereby; and receiving s signal from a serving cell by means of the changed CRS configuration of the neighboring cell. 1. A method of receiving a signal , which is received by a user equipment in a wireless communication system , comprising the steps of:checking a presence or non-presence of a CRS (cell specific reference signal) configuration change of a neighbor cell;if the CRS configuration of the neighbor cell is changed, recognizing the changed CRS configuration by receiving a system information of the neighbor cell; andreceiving the signal from a serving cell using the changed CRS configuration of the neighbor cell.2. The method of claim 1 , wherein the step of checking the presence or non-presence of the CRS configuration change is based on a CRS configuration valid period information received from the serving cell.3. The method of claim 1 , wherein the step of checking the presence or non-presence of the CRS configuration change is based on an indicator indicating whether the system information of the neighbor cell is obtained.4. The method of claim 3 , wherein the system information includes at least one of an information transmitted on a physical broadcast channel (PBCH) and an information transmitted on a system information block (SIB).5. The method of claim 4 , wherein the user equipment further receives an indicator indicating which one of the information transmitted on the PBCH and the information transmitted on the SIB should be decoded.6. The method of claim 1 , ...

METHOD BY WHICH TERMINAL MONITORS CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM, AND TERMINAL USING METHOD

A method by which a terminal monitors a control channel in a wireless communication system, and a device using the method are provided. The method determines whether physical downlink control channel (PDCCH) monitoring occasions overlap in a plurality of control resource sets (CORESETs), selects at least one CORESET from among the plurality of CORESETs when the PDCCH monitoring occasions overlap, and monitors a PDCCH only in the selected at least one CORESET from among the plurality of CORESETs. 1. A method of monitoring a control channel of a user equipment (UE) in a wireless communication system , the method comprising:identifying whether physical downlink control channel (PDCCH) monitoring occasions are overlapped in a plurality of control resource sets (CORESETs);selecting at least one CORESET from the plurality of CORESETs based on the PDCCH monitoring occasions being overlapped; andmonitoring PDCCH candidates only in the at least one CORESET selected from the plurality of CORESETs.2. The method of claim 1 , wherein the at least one CORESET is selected based on a type of a related search space.3. The method of claim 2 , wherein the type of the search space is a common search space (CSS) or a UE-specific search space (USS).4. The method of claim 1 , wherein the selecting of at least one CORESET comprises:selecting a CORESET comprising a common search space having a lowest index when there are a plurality of CORESETs comprising a common search space (CSS).5. The method of claim 1 , further comprising:selecting a first CORESET corresponding to a CSS set with a lowest index in a cell with a lowest index containing a CSS among the plurality of CORESETs.6. The method of claim 5 , further comprising:monitoring a PDCCH in the first CORESET and any other CORESET using a same reception beam as that of the first CORESET.7. The method of claim 6 , wherein the any other CORESET using the same reception beam as that of the first CORESET is a CORESET having a same quasi co ...

METHOD FOR TRANSMITTING SIGNAL ON BASIS OF MULTI-RADIO ACCESS TECHNOLOGY IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

A user equipment for performing multi-RAT concurrent transmission according to an embodiment of the present invention receives, from a base station, information on subframe sets and power management parameters to be applied to each of the subframe sets, sets the maximum transmission power of each of a first RAT signal and a second RAT signal using the power management parameters, and transmits at least one of the first RAT signal and the second RAT signal based on the set maximum transmission power. The subframe sets may include a first subframe set in which only transmission of the first RAT signal is allowed and a second subframe set in which multi-RAT concurrent transmission is allowed, and the power management parameters may include a parameter for limiting the maximum transmission power of the second RAT signal to be transmitted concurrently with the first RAT signal in the second subframe set. 1. A method of performing multi-radio access technology (RAT) simultaneous transmission a user equipment (UE) in a wireless communication system , the method comprising:receiving, from a first RAT base station, information on a plurality of subframe sets and a plurality of power management parameters to be applied to each of the plurality of subframe sets;configuring maximum transmit power of a first RAT signal and maximum transmit power of a second RAT signal using the plurality of power management parameters; andtransmitting at least one of the first RAT signal and the second RAT signal based on the configured maximum transmit power,wherein the plurality of subframe sets contain a first subframe set in which transmission of the first RAT signal is allowed only and a second subframe set in which multi-RAT simultaneous transmission is allowed andwherein the plurality of power management parameters contain a parameter for limiting the maximum transmit power of the second RAT signal to be simultaneously transmitted with the first RAT signal in the second subframe set.2. ...

METHOD FOR PERFORMING MEASUREMENT IN WIRELESS COMMUNICATIONS SYSTEM AND APPARATUS THEREFOR

A method for performing measurement by a terminal in a wireless communications system according to an embodiment of the present invention includes the steps of: receiving from a first transmission point the uplink-downlink structures associated respectively with a second transmission point and a third transmission point; and determining at least one measurement set based on the received uplink-downlink structures, wherein each measurement set consists of the sub-frames that: the duplex direction combination during a particular time interval in the case of following the uplink-downlink structure associated with the second transmission point is the same as the duplex direction combination during the particular time interval in the case of following the uplink-downlink structure associated with the third transmission point. 1. A method of performing measurement , which is performed by a user equipment in a wireless communication system , the method comprising the steps of:{'sup': nd', 'rd', 'st, 'receiving a UL-DL (uplink-downlink) configuration related to a 2transmission point and a UL-DL configuration related to a 3transmission point from a 1transmission point; and'}determining at least one or more measurement sets based on the received UL-DL configurations,{'sup': nd', 'rd, 'wherein each of the at least one or more measurement sets comprises subframes with a same combination of a duplex direction in a specific time interval in accordance with the UL-DL configuration related to the 2transmission point and a duplex direction in the specific time interval in accordance with the UL-DL configuration related to the 3transmission point.'}2. The method of claim 1 , further comprising the step of performing the measurement on the at least one or more measurement sets.3. The method of claim 2 , wherein in the each of the at least one or more measurement sets claim 2 , measurement results of subframes included in a measurement window are calculated as an average value.4. The ...

METHOD AND APPARATUS FOR REPORTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM

One embodiment of the present invention provides a method for reporting channel state information (CSI) of a terminal in a wireless communication system, comprising the steps of: receiving a downlink signal comprising an uplink grant; when a CSI request field contained in the downlink signal triggers a CSI report, deriving a CQI value on the basis of a PDSCH transmission block in a CSI reference resource; and carrying out a CSI report including the CQI value in subframe n, wherein the CSI reference resource is the last subframe that is not later than a subframe which is four subframes before subframe n. 1. A method for performing Channel State Information (CSI) reporting by a User Equipment (UE) in a wireless communication system , the method comprising:receiving a downlink signal including an uplink grant;deriving a Channel Quality Indicator (CQI) value based on a Physical Downlink Shared Channel (PDSCH) transport block in a CSI reference resource when a CSI request field included in the downlink signal triggers CSI reporting; andperforming CSI reporting including the CQI value in a subframe n,wherein the CSI reference resource is a last valid subframe among subframes which precede the subframe n by 4 subframes.2. The method according to claim 1 , wherein claim 1 , if two or more subframe sets are configured for the UE claim 1 , a subframe set related to CSI reporting is indicated by information included in the downlink signal.3. The method according to claim 2 , wherein the last subframe is included in the subframe set related to CSI reporting.4. The method according to claim 3 , wherein at least one CSI process is configured for the UE.5. The method according to claim 4 , wherein the CSI process includes a CSI-Reference Signal (CSI-RS) resource for signal measurement and two CSI-Interference Measurement (IM) resources for interference measurement.6. The method according to claim 2 , wherein the CSI reference resource corresponds to a subframe set indicated by the ...

METHOD FOR MONITORING CONTROL SIGNAL OF TERMINAL IN WIRELESS COMMUNICATION SYSTEM AND TERMINAL USING THE SAME

A method of monitoring a control signal in a wireless communication system, where the method is performed by a user equipment (UE) and includes: selecting at least one control resource set (CORESET) among a plurality of CORESETs based on an overlap between physical downlink control channel (PDCCH) monitoring occasions in the plurality of CORESETs; and monitoring a PDCCH only in the selected at least one CORESET, among the plurality of CORESETs. The method also includes: based on the at least one CORESET including a first CORESET, and based on a first reference signal of the first CORESET and a second reference signal of a second CORESET being associated with a same synchronization signal/physical broadcast channel block (SSB): monitoring the PDCCH in both the first CORESET and the second CORESET. 1. A method of monitoring a control signal in a wireless communication system , the method performed by a user equipment (UE) and comprising:selecting at least one control resource set (CORESET) among a plurality of CORESETs based on an overlap between physical downlink control channel (PDCCH) monitoring occasions in the plurality of CORESETs; andmonitoring a PDCCH only in the selected at least one CORESET, among the plurality of CORESETs, 'monitoring the PDCCH in both the first CORESET and the second CORESET.', 'wherein based on the at least one CORESET comprising a first CORESET, and based on a first reference signal of the first CORESET and a second reference signal of a second CORESET being associated with a same synchronization signal/physical broadcast channel block (SSB)2. The method of claim 1 , wherein claim 1 , in selecting the at least one CORESET claim 1 , a first priority of a CORESET that includes a Common Search Space (CSS) is higher than a second priority of a CORESET that includes a UE-specific Search Space (USS).3. The method of claim 1 , wherein selecting the at least one CORESET comprises: 'selecting the at least one CORESET to include a CORESET, among ...

METHOD OF RECEIVING SIGNAL IN CORESET OF WIRELESS COMMUNICATION SYSTEM AND APPARATUS USING THE METHOD

Provided are a method for receiving a signal in a control resource set (CORESET) of a wireless communication system and a user equipment (UE) using the method. The method includes receiving a radio resource control (RRC) signal including a plurality of transmission configuration indicator (TCI) states, receiving a medium access control (MAC) control element (CE) informing one of the plurality of TCI states and receiving a signal in the CORESET based on the one TCI state. When the CORESET is CORESET #0, the one TCI state is related with a reference signal associated with a synchronization signal/physical broadcast channel block (SSB). 1. A method for receiving a signal in a control resource set (CORESET) of a wireless communication system , the method comprising:receiving a radio resource control (RRC) signal including a plurality of transmission configuration indicator (TCI) states;receiving a medium access control (MAC) control element (CE) informing a TCI state of the plurality of TCI states; andreceiving a signal in the CORESET based on the TCI state,wherein, based on the CORESET being CORESET #0, the TCI state is related with a reference signal associated with a synchronization signal/physical broadcast channel block (SSB).2. The method of claim 1 , wherein the reference signal is a channel state information reference signal (CSI-RS).3. The method of claim 2 , wherein the TCI state includes information on quasi co-location (QCL) relation between the CSI-RS and a demodulation reference signal (DMRS) port.4. The method of claim 1 , wherein quasi co-location (QCL) information of the reference signal is determined based on the SSB.5. The method of claim 1 , wherein the CORESET #0 is configured by information which is transmitted through a physical broadcast channel (PBCH).6. A user equipment (UE) comprising:a transceiver configured to transmit and receive a wireless signal; anda processor configured to operate in combination with the transceiver,wherein the ...

METHOD BY WHICH TERMINALS IN WIRELESS COMMUNICATION SYSTEMS RECEIVE DOWNLINK CONTROL CHANNELS AND APPARATUS FOR SAME

The present invention relates to a method by which terminals in a wireless communication system receive control channels. More particularly, the method includes the steps of: receiving control information that includes the transmission mode for the control channel and information about the number of antenna ports through a broadcast channel from a base station; and receiving the control channel on the basis of the control information. 1. A method of receiving a control channel , which is received by a user equipment in a wireless communication system , the method comprising:receiving control information containing information on a transmission mode for the control channel and the number of antenna port from an eNode B via a broadcast channel; andreceiving the control channel based on the control information.2. The method according to claim 1 , wherein the control information corresponds to an MIB (master information block) and wherein the information on the transmission mode and the number of antenna port is contained in a spare bit of the MIB.3. The method according to claim 1 , wherein the broadcast channel is received in a plurality of frames claim 1 , wherein the broadcast channel received via each of a plurality of the frames is masked by a CRC (cyclic redundancy check) indicating a specific value and wherein the information on the transmission mode and the number of antenna port is represented by a combination of specific values indicated by a CRC value masked on the broadcast channel which is received via each of a plurality of the frames.4. The method according to claim 1 , wherein the broadcast channel is masked by a CRC (cyclic redundancy check) indicating a specific value and wherein the information on the transmission mode and the number of antenna port is represented by a specific value which is indicated by a CRC value masked on the broadcast channel.5. The method according to claim 1 , wherein the transmission mode corresponds to one selected from the ...

METHOD AND APPRATUS FOR MEASUREMENT FOR INTER-CELL INTERFERENCE COORDINATION IN RADIO COMMUNICATION SYSTEM

A method for supporting measurement of a User Equipment (UE) by a first base station in a wireless communication system. The method according to an embodiment includes acquiring, by the first base station, information of a downlink subframe configuration of a second base station; and transmitting, by the first base station, information of measurement objects to the UE. The measurement objects are determined based on the downlink subframe configuration of the second base station. A measurement is performed by the UE in resources indicated based on the information of the measurement objects. The resources are determined as a combination of at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol and at least one downlink subframe. The downlink subframe configuration of the second base station includes information indicating at least one subframe configured as an Almost Blank Subframe (ABS). 1. A method for supporting measurement of a User Equipment (UE) by a first base station in a wireless communication system , the method comprising:acquiring, by the first base station, information of a downlink subframe configuration of a second base station; andtransmitting, by the first base station, information of measurement objects to the UE,wherein the measurement objects are determined based on the downlink subframe configuration of the second base station,wherein a measurement is performed by the UE in resources indicated based on the information of the measurement objects,wherein the resources are determined as a combination of at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol and at least one downlink subframe, andwherein the downlink subframe configuration of the second base station includes information indicating at least one subframe configured as an Almost Blank Subframe (ABS).2. The method according to claim 1 , wherein the measurement objects include resources of the first base station having reduced interference from the second base ...

METHOD AND APPARATUS FOR REPORTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM

One embodiment of the present invention relates to a method by which a terminal reports channel state information (CSI) in a wireless communication system, the method comprising: a step of receiving a downlink signal including an uplink approval; and a step of reporting CSI when a CSI request field included in the downlink signal triggers CSI reporting. The CSI reporting trigger also indicates which sub-frame set of a plurality of sub-frame sets assigned to the terminal which the CSI reporting is related to. 1. A method for performing Channel State Information (CSI) reporting by a User Equipment (UE) in a wireless communication system , the method comprising:receiving a downlink signal including an uplink grant; andperforming CSI reporting when a CSI request field included in the downlink signal triggers CSI reporting,wherein triggering of CSI reporting indicates a subframe set to which CSI reporting is related among one or more subframe sets configured for the UE,wherein CSI reporting is related only to one subframe set among the one or more subframe sets.2. The method according to claim 1 , wherein CSI reporting is related only to one subframe set among the one or more subframe sets.3. The method according to claim 2 , wherein the one subframe set is indicated by a value of the CSI request field.4. The method according to claim 3 , wherein a relationship between the value of the CSI request field and the subframe set is indicated by higher layer signaling.5. The method according to claim 3 , wherein the value of the CSI request field indicates a CSI process associated with the subframe set.6. The method according to claim 5 , wherein a relationship between the subframe set and the CSI process is indicated by higher layer signaling.7. The method according to claim 1 , wherein a subframe in which the downlink signal is received is indicated to be used for uplink on system information.8. The method according to claim 1 , wherein the one or more subframe sets are ...

METHOD AND DEVICE FOR RELAYING BY DEVICE-TO-DEVICE COMMUNICATION TERMINAL IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a method for relaying a signal by a device-to-device (D2D) terminal in a wireless communication system, the method comprising the steps of: measuring the signal strength of a signal received from a base station; and, if a terminal successfully decodes the received signal and the strength of the received signal is smaller than a preset threshold value, the terminal relaying a predetermined signal among the signal received from the base station, wherein, if the terminal relays the predetermined signal, mode 1 operation is performed event if a mode configured for the terminal is mode 2. 1. A method of relaying a signal , which is relayed by a D2D (device-to-device) user equipment (UE) in a wireless communication system , comprising the steps of:measuring signal strength of a signal received from an eNB; andif the UE succeeds in decoding the received signal and strength of the received signal is smaller than a predetermined threshold value, relaying a prescribed signal among the signal received from the eNB,wherein if the UE relays the prescribed signal, although a mode set to the UE corresponds to a mode 2, the UE performs a mode 1 operation.2. The method of claim 1 , wherein the predetermined threshold value is configured for UEs located at a cell edge of the eNB to perform the relaying.3. The method of claim 2 , wherein the predetermined threshold value corresponds to −120 dBm.4. The method of claim 1 , wherein the mode 1 is to directly indicate a resource related to D2D signal transmission by the eNB claim 1 , wherein the mode 2 is to select a resource related to D2D signal transmission by the UE claim 1 , and wherein if the UE relays the prescribed signal claim 1 , a resource used for relaying the prescribed signal is indicated by the eNB.5. The method of claim 4 , wherein the resource used for relaying the prescribed signal is common to all UEs relaying the prescribed signal.6. The method of claim 1 , wherein the prescribed signal ...

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM

A method for transmitting and receiving a signal in a wireless communication system according to an embodiment of the present invention, comprises the steps of: setting, by a first transmission point, a frequency resource area in at least one subframe; and transmitting information related to the set frequency resource area to a second transmission point, wherein when the first transmission point transmits a physical downlink shared channel (PDSCH) in the set frequency resource area, a ratio of a PDSCH energy per resource element (EPRE) to a cell-specific reference signal (CRS) EPRE in the set frequency resource area is less than a ratio of a PDSCH EPRE to a CRS EPRE in resource areas other than the set frequency resource area. 1. A method for transmitting and receiving a signal in a wireless communication system , comprising:configuring, by a first transmission point, a frequency resource region in at least one subframe; andtransmitting, to a second transmission point, information related to the configured frequency resource region,wherein, when the first transmission point transmits a Physical Downlink Shared Channel (PDSCH) in the frequency resource region, a PDSCH EPRE (Energy Per Resource Element)-to-CRS (Cell-specific reference signal) EPRE ratio used in the frequency resource region is less than a PDSCH EPRE-to-CRS EPRE ratio in a resource region other than the frequency resource region.2. The method according claim 1 , wherein at least one part of the frequency resource region is used for transmission of an Enhanced Physical Downlink Control Channel (EPDCCH) from the second transmission point.3. The method according claim 2 , wherein the EPDCCH from the second transmission point is intended for at least one of terminals neighboring cell edges of the first transmission point and the second transmission point.4. The method according claim 1 , wherein the frequency resource region is nulled by the first transmission point.5. The method according claim 1 , ...

METHOD AND APPARATUS FOR SIGNAL TRANSCEIVING IN WIRELESS COMMUNICATION SYSTEM

An embodiment of the present invention is a method for receiving a signal from a plurality of transmission points in a wireless communication system, the method for receiving a signal comprising the steps of: blind decoding a first search space of a subframe received from a first transmission point; and blind decoding a second search space of a subframe received from a second transmission point, wherein the combination of the first search space and the second search space is equivalent to a search space that results when a signal is received from only one transmission point from among the plurality of transmission points. 1. A method of , at a user equipment (UE) , receiving a signal from a plurality of transmission points in a wireless communication system , the method comprising:performing blind decoding with respect to a first search space of a subframe received from a first transmission point; andperforming blind decoding with respect to a second search space of a subframe received from a second transmission point,wherein a combination of the first search space and the second search space corresponds to a search space when a signal is received from only any one of the plurality of transmission points.2. The method according to claim 1 , wherein the first search space is for downlink control information (DCI) for a plurality of UEs including the UE and the second search space is DCI for the UE.3. The method according to claim 1 , wherein the first search space is for a DCI format which does not depend on a transmission mode and the second search space is for a DCI format which depends on a transmission mode.4. The method according to claim 1 , wherein the first search space and the second search space do not overlap in terms of an aggregate of control channel elements which is a blind decoding unit.5. The method according to claim 1 , wherein the number of physical downlink control channel (PDCCH) candidates included in the first search space is equal to the ...

SYNCHRONIZATION SIGNAL TRANSMISSION METHOD AND APPARATUS FOR DEVICE-TO-DEVICE TERMINAL IN WIRELESS COMMUNICATION SYSTEM

A terminal apparatus for a device-to-device (D2D) terminal in a wireless communication system, according to an embodiment of the present invention, comprises a transmission device and a reception device; and a processor, wherein the processor generates and transmits a primary sidelink synchronization signal (PSSS) and a secondary sidelink synchronization signal (SSSS), wherein, if a PSBCH is transmitted in a subframe in which the PSSS and the SSSS are being transmitted and is normal CP, the PSSS and a PSBCH on power is the average power of a period, in the subframe in which the PSSS and the SSSS are being transmitted, not including a transient period, wherein the transient period of a starting part of the period for the PSSS and PSBCH ON power is not overlapped with an OFDM symbol on which the PSSS is transmitted. 1. A sidelink User equipment (UE) in a wireless communication system , the sidelink UE comprising:a memory; anda plurality of processors coupled to the memory,wherein at least one processor of the plurality of processors configured to transmit a primary sidelink synchronization signal (PSSS), a secondary sidelink synchronization signal (SSSS) and a Physical sidelink broadcast channel (PSBCH),wherein a first transient period related to PSBCH ON power and SSSS on power is overlapped with SSSS resource.2. The sidelink UE according to claim 1 , wherein the first transient period is related to both a normal cyclic prefix (CP) and extended CP.3. The sidelink UE according to claim 1 , wherein an overlapped period of the first transient period is included in a single symbol in the SSSS resource.4. The sidelink UE according to claim 1 , wherein a second transient period related to SSSS on power and a guard period is overlapped with the guard period.5. A method for transmitting a synchronization signal from a sidelink UE in a wireless communication system claim 1 , the method comprising:transmitting a primary sidelink synchronization signal (PSSS), a secondary ...

METHOD FOR DETERMINING TRANSMISSION CONFIGURATION INDICATOR FOR TERMINAL IN WIRELESS COMMUNICATION SYSTEM AND DEVICE USING SAME METHOD

Provided are a method for determining a transmission configuration indicator (TCI) for a terminal in a wireless communication system and a device employing the method. The method comprises: receiving a radio resource control (RRC) signal including a plurality of TCI states; receiving a medium access control (MAC) control element (CE) indicating a TCI state among the plurality of TCI states; and determining a TCI relating to a control resource set (CORESET) on the basis of the RRC signal and the MAC CE. 1. A method for determining a transmission configuration indicator (TCI) of a user equipment (UE) in a wireless communication system , the method comprising:receiving a radio resource control (RRC) signal including a plurality of TCI states;receiving a medium access control (MAC) control element (CE) informing one TCI state among the plurality of TCI states; anddetermining a TCI for a control resource set (CORESET) based on the RRC signal and the MAC CE,wherein the RRC signal is a first RRC signal including TCI states related to a physical downlink shared channel (PDSCH) or a second RRC signal including TCI states related to a physical downlink control channel (PDCCH), andwherein based on the CORESET being a specific CORESET, the MAC CE informs one TCI state among the TCI states related to the PDSCH, and based on the CORESET not being the specific CORESET, the MAC CE informs one TCI state among the TCI states related to the PDCCH.2. (canceled)3. The method of claim 1 , wherein the TCI states related to the PDCCH included in the second RRC signal are a subset of the TCI states related to the PDSCH included in the first RRC signal.4. (canceled)5. The method of claim 1 , wherein the first RRC signal includes 64 TCI states related to the PDSCH.6. A user equipment (UE) claim 1 , comprising:a transceiver for transmitting and receiving a radio signal; anda processor operating with being connected to the transceiver,wherein the processor is configured to:receive a radio ...

METHOD FOR TRANSMITTING SYNCHRONIZATION SIGNAL FOR DIRECT COMMUNICATION BETWEEN TERMINALS IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR

The present invention relates to a wireless communication system. Disclosed is a method for transmitting a synchronization signal for direction communication between terminals. A method for transmitting a synchronization signal according to one embodiment of the present invention comprises the steps of: mapping a synchronization signal for direction communication between terminals to a sub-frame comprising a first slot and a second slot; and transmitting, to a counterpart terminal, the sub-frame to which the synchronization signal is mapped, wherein the synchronization signal is mapped to four orthogonal frequency division multiple access (OFDM) symbols of the sub-frame, and at least two OFDM symbols of the four OFDM symbols may be adjacent to each other. 1. A method of transmitting , by a User Equipment (UE) , synchronization signal for Device-to-Device (D2D) link in a wireless communication system , the method comprising:mapping synchronization signal for D2D link (D2DSS) to a subframe including a first slot and a second slot; andtransmitting the D2DSS, in the subframe based on the mapping,wherein the D2DSS is mapped to at least 4 symbols of the subframe, andwherein at least 2 symbols of the at least 4 symbols are adjacent each other.2. The method of claim 1 ,wherein the D2DSS includes primary synchronization signal for the D2D link (PD2DSS) and secondary synchronization signal for the D2D link (SD2DSS).3. The method of claim 2 ,wherein the PD2DSS and the SD2DS are mapped to 2 symbols, respectively.4. The method of claim 2 ,wherein the PD2DSS is mapped to 2 symbols of the first slot of the subframe, and the SD2DSS is mapped to 2 symbols of the second slot of the subframe.5. The method of claim 2 ,wherein the PD2DSS is mapped to symbols located prior to reference symbol available for a reference signal.6. The method of claim 2 ,wherein the SD2DSS is mapped to symbols located after reference symbol available for a reference signal.7. The method of claim 2 ,wherein ...

METHOD AND APPARATUS FOR RECEIVING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

One embodiment of the present invention provides a method for enabling a terminal to receive control information in a wireless communication system, comprising the steps of: determining resource units for Enhanced Physical Downlink Control Channel (EPDCCH) of a plurality of resource units, with respect to each of one or more resource sets; and blind-decoding the resource units for the EPDCCH with respect to each of the one or more resource sets, wherein each of the one or more resource sets is set for one of localized EPDCCH transmission or distributed EPCCH transmission. 1. A method for receiving control information by a user equipment (UE) in a wireless communication system , comprising:performing blind decoding on a plurality of resource units corresponding to each of at least one resource set,wherein:the resource units are resource units for an enhanced physical downlink control channel (EPDCCH) among resource units related to a downlink bandwidth; andeach of the at least one resource set is configured for one of localized EPDCCH transmission and distributed EPCCH transmission.2. The method according to claim 1 , wherein each of the resource units is a physical resource block (PRB) pair claim 1 , and the resource set is a PRB set.3. The method according to claim 1 , wherein information indicating each of the at least one resource set is configured for either the localized EPDCCH transmission or the distributed EPCCH transmission is signaled to the UE through higher layer signaling.4. The method according to claim 1 , wherein determination of the resource units for the EPDCCH is based on information about a resource set delivered through higher layer signaling.5. The method according to claim 1 , wherein:the at least one resource set comprises a first resource set configured for the localized EPDCCH transmission and a second resource set configured for the distributed EPDCCH transmission; andwhen an overlapping resource unit included in both the first and second ...

Method for acquiring time synchronization in a heterogeneous network and apparatus for the same

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for acquiring time synchronization in a wireless communication system, and to an apparatus for the method, wherein the method comprises the steps of: obtaining information on a discontinuous transmission pattern of a synchronous channel; attempting detection of a synchronous channel of a base station; and, if said detection fails, continuously attempting detection of the synchronous channel of the base station during a predetermined time period. If the base station is of a first type, said predetermined time period is set to be the same as or longer than the time period in which the synchronous channel is continuously not transmitted in said discontinuous transmission pattern. If the base station is of a second type, said predetermined time period is set to be the same as or longer than the time period in which the synchronous channel is continuously transmitted in said discontinuous transmission pattern.

METHOD FOR TRANSMITTING OR RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

A method for receiving a PDCCH signal by a terminal in a wireless communication system according to one embodiment of the present invention may comprise the steps of: determining the number of CCEs for channel estimation and the number of times of blind-decoding related to multiple search space sets that the terminal needs to monitor during one slot; when the determined number of times of the blind-decoding exceeds a blind-decoding limit or the determined number of the CCEs exceeds a channel estimation limit, dropping at least one PDCCH candidate among PDCCH candidates included in the multiple search space sets; and attempting to detect a PDCCH signal on the basis of remaining PDCCH candidates which have not been dropped among the PDCCH candidates, wherein, in the dropping of the at least one PDCCH candidate, the terminal switches between the multiple search space sets in a round-robin scheme while dropping the at least one PDCCH candidate until both the blind-decoding limit and the channel estimation limit are reached. 1. A method of receiving a physical downlink control channel (PDCCH) signal by a user equipment (UE) in a wireless communication system , the method comprising:determining the number of blind decodings and the number of control channel elements (CCEs) for channel estimation, related to a plurality of search space sets to be monitored during one slot by the UE;based on that the determined number of blind decodings exceeds a blind decoding limit or the determined number of CCEs exceeds a channel estimation limit, dropping at least one of PDCCH candidates included in the plurality of search space sets; andattempting to detect a PDCCH signal based on remaining non-dropped PDCCH candidates among the PDCCH candidates,wherein the UE drops the at least one PDCCH candidate from the plurality of search space sets in a round-robin manner until both the blind decoding limit and the channel estimation limit are satisfied.2. The method according to claim 1 , ...

METHOD OF DETERMINING SLOT FORMAT IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

A method performed by a user equipment (UE) in a wireless communication system, where the method includes: receiving, through higher layer signaling, uplink (UL)/downlink (DL) resource configuration including information regarding a first UL/DL resource pattern; determining, based on the received UL/DL resource configuration, the first UL/DL resource pattern that is applicable over a first configuration period; and based on the received UL/DL resource configuration also including information regarding a second UL/DL resource pattern: determining the second UL/DL resource pattern that is applicable over a second configuration period, wherein the first configuration period and the second configuration period are restricted to values such that an integer multiple of a sum of the first configuration period and the second configuration period is time-aligned with a 20 ms time duration. 1. A method of receiving slot format related information (SFI) by a user equipment (UE) in a wireless communication system , the method comprising:receiving a first group common-physical downlink control channel (GC-PDCCH) signal including a first SFI, at a first timing based on a GC-PDCCH monitoring periodicity;determining first slot formats for first slots based on the first SFI;receiving a second GC-PDCCH signal including a second SFI, at a second timing based on the GC-PDCCH monitoring periodicity; anddetermining second slot formats for second slots based on the second SFI,wherein, based on that a time length of first slot formats is longer than a time length of the GC-PDCCH monitoring periodicity, and a slot of the second slots overlaps with the first slots, the first slot formats and the second slot formats are determined to configure a same slot format for the overlapping slot.2. The method according to claim 1 , wherein the UE is configured with a plurality of slot format combinations each related to predetermined slot formats claim 1 , andwherein each of the first SFI and the ...

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DOWNLINK SIGNALS IN WIRELESS COMMUNICATION SYSTEMS

The present invention relates to a method for a base station to transmit a downlink signal in a wireless communication system, including the step of transmitting information related to a downlink subframe, wherein the information related to the downlink subframe is a subframe set for uplink transmission. 1. A method of transmitting a downlink signal , which is transmitted by an eNode B in a wireless communication system , comprising the steps of:transmitting information associated with a downlink subframe; andtransmitting a downlink signal via a subframe configured for uplink transmission,wherein the information associated with the downlink subframe corresponds to information used for the subframe configured for the uplink transmission.2. The method of claim 1 , wherein the information associated with the downlink subframe comprises information indicating whether a cell-specific reference signal is transmitted in case of transmitting the downlink signal via the subframe configured for the uplink transmission.3. The method of claim 1 , wherein whether the subframe is configured for the uplink transmission is indicated to a user equipment via a system information block and wherein the subframe to which the downlink signal is transmitted and configured for the uplink transmission claim 1 , corresponds to a subframe capable of being configured as an MBSFN (multimedia broadcast single frequency network) subframe.4. The method of claim 1 , wherein the information associated with the downlink subframe comprises antenna port information of a cell-specific reference signal claim 1 , which is transmitted in case of transmitting the downlink signal via the subframe configured for the uplink transmission.5. The method of claim 4 , wherein the antenna port information corresponds to a subset of antenna port information of a cell-specific reference signal transmitted in a subframe configured for downlink transmission.6. The method of claim 1 , wherein the information associated ...

METHOD FOR TRANSMITTING OR RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

According to one embodiment of the present invention, a method by which a terminal transmits a signal in a wireless communication system comprises the steps of: receiving timing advance (TA) information on a self-contained subframe having all of a downlink control region, a downlink data region, a guard period (GP) for transmission/reception switching, and an uplink control region; and transmitting uplink control information by advancing transmission timing corresponding to the uplink control region by the time length indicated by the TA information, wherein, when the time length indicated by the TA information is shorter than a predetermined magnitude, the terminal can first transmit a specific uplink signal, and then transmit the uplink control information in a GP remaining period remaining after completion of the transmission/reception switching. 1. A method for transmitting a signal by a user equipment (UE) in a wireless communication system , the method comprising:receiving timing advance (TA) information on a self-contained subframe having all of a downlink control region, a downlink data region, a guard period (GP) for transmission/reception switching, and an uplink control region; andtransmitting uplink control information by advancing transmission timing corresponding to the uplink control region by a time length indicated by the TA information,wherein when the time length indicated by the TA information is less than a predetermined length, the UE first transmits a specific uplink signal, and then transmits the uplink control information at a residual duration of the GP, which remains after completion of the transmission/reception switching.2. The method according to claim 1 , wherein the residual duration of the GP is varied depending on the time length indicated by the TA information claim 1 , and the UE transmits the specific uplink signal if the residual duration of the GP is at least a half symbol duration or more.3. The method according to claim 1 , ...

METHOD AND APPARATUS FOR TRANSMITTING UPLINK SIGNAL IN WIRELESS COMMUNICATION SYSTEM

One embodiment of the present invention provides a method for transmitting an uplink signal by a terminal in a wireless communication system, comprising the steps of: receiving allocated resources for transmitting an uplink signal from a serving cell; and transmitting the uplink signal through the allocated resources wherein, when a subframe corresponding to a first subframe comprising the allocated resources is used for transmitting a downlink in a neighbor cell of the serving cell, a first set comprising a parameter value associated with the transmission power for transmitting the uplink signal is different from a second set comprising a parameter value associated with the transmission power for transmitting an uplink signal in a second subframe corresponding to a subframe used for an uplink in the neighbor cell. 1. A method for transmitting an uplink signal by a user equipment in a wireless communication system , the method comprising:being allocated with resources for transmitting the uplink signal from a serving cell; andtransmitting the uplink signal through the allocated resources,wherein, when a subframe corresponding to a first subframe that include the allocated resources are used for downlink transmission in a neighboring cell of the serving cell, a first set comprising parameter values associated with a transmission power for transmitting the uplink signal is different from a second set comprising parameter values associated with a transmission power for uplink signal transmission at a second subframe corresponding to a subframe used for an uplink in the neighboring cell.2. The method according to claim 1 , wherein an absolute value of a difference between two of the parameter values included in the first set is greater than an absolute value of a difference between two of the parameter values included in the second set.3. The method according to claim 1 , wherein each of the parameter values included in the first set is an integer multiple of each of ...

METHOD FOR TRANSMITTING AND RECEIVING SIGNALS IN WIRELESS COMMUNICATION SYSTEM, AND DEVICE FOR PERFORMING SAME

A method for receiving signals by a first terminal in a wireless communication system supporting non-orthogonal multiple access (NOMA), according to one embodiment of the present invention, comprises the steps of: obtaining downlink control information with respect to a second terminal which is NOMA-paired with the first terminal; receiving NOMA signals in which a first physical downlink shared channel (PDSCH) with respect to the first terminal and a second PDSCH with respect to the second terminal are multiplexed by different transmission power values; and removing interference by the second PDSCH from the NOMA signals on the basis of the downlink control information with respect to the second terminal. In the step of removing the interference by the second PDSCH, if the second PDSCH is re-transmitted to the second terminal by an HARQ process, the interference by the second PDSCH can be removed by reusing predetermined information obtained by the first terminal at the time of initial transmission with respect to the HARQ process. 1. A method of receiving a signal by a first user equipment in a wireless communication system supporting non-orthogonal multiple access (NOMA) , the method comprising:obtaining downlink control information for a second user equipment which is NOMA-paired with the first user equipment;receiving a NOMA signal in which a first physical downlink shared channel (PDSCH) for the first user equipment and a second PDSCH for the second user equipment are multiplexed by different transmit power values; andcancelling interference caused by the second PDSCH from the NOMA signal based on the downlink control information for the second user equipment,wherein in the cancelling the interference caused by the second PDSCH, when the second PDSCH is a PDSCH retransmitted to the second user equipment by a hybrid automatic repeat request (HARQ) process, the interference caused by the second PDSCH is canceled by reusing predetermined information obtained by the ...

THE METHOD AND APPARATUS FOR TRANSMITTING AND RECEVING DOWNLINK CONTROL CHANNEL

A method of receiving a downlink control channel at a user equipment (UE) in a wireless communication system is disclosed. The method includes receiving information on a resource element group (REG) bundle size and information on a size of a matrix for interleaving a plurality of REGs configuring at least one control channel element (CCE) through a higher layer, determining the matrix for interleaving the plurality of REGs based on the information on the size of the matrix and the information on the REG bundle size, interleaving the plurality of REGs bundled into one or more REG bundles according to the REG bundle size using the matrix, and receiving the downlink control channel based on the plurality of interleaved REGs. 1. A method of receiving a downlink control channel at a user equipment (UE) in a wireless communication system , the method comprising:receiving, from a base station, first information related to a resource element group (REG) bundle size, and second information related to an interleaver size for interleaving REG bundles.receiving, based on the first information related to the REG bundle size and the second information related to the interleaver size, the downlink control channel over a control resource set (CORESET) that comprises a plurality of REGs that are bundled into one or more REG bundles according to the REG bundle size,wherein the one or more REG bundles are interleaved within the CORESET according to the interleaver size,wherein a duration of the CORESET is configured to be 1, 2, or 3 Orthogonal Frequency Division Multiplexed (OFDM) symbols, andwherein the REG bundle size is related to the duration of the CORESET.2. The method according to claim 1 , wherein the second information related to the interleaver size relates to a dimension of an interleaving matrix.3. The method according to claim 2 , wherein the dimension of the interleaving matrix is a number of rows or a number of columns of the interleaving matrix.4. The method according ...

METHOD FOR TRANSMITTING/RECEIVING SYNCHRONIZATION SIGNAL FOR D2D COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR

The present invention relates to a method and an apparatus which enable a terminal to transmit a signal for device-to-device (D2D) communication in a wireless communication system. Specifically, the present invention transmits a synchronization signal for D2D communication and a demodulation reference signal (DM-RS) for demodulation of the synchronization signal, wherein the base sequence of the demodulation reference signal is generated using a synchronization reference ID. 1. A method of transmitting a signal for device-to-device (D2D) communication by a user equipment (UE) in a wireless communication system , the method comprising:transmitting a synchronization signal for D2D communication and a demodulation reference signal (DM-RS) for demodulating the synchronization signal,wherein a base sequence of the DM-RS is generated using a synchronization reference identity (ID).2. The method according to claim 1 , wherein the base sequence is generated based on a value obtained by dividing the synchronization reference ID by a predetermined value.3. The method according to claim 1 , wherein an orthogonal cover code (OCC) for the DM-RS is determined using one lower bit of the synchronization reference ID.4. The method according to claim 1 , wherein a cyclic shift for the DM-RS is determined using three lower bits of the synchronization reference ID.5. A user equipment (UE) for transmitting a signal for device-to-device (D2D) communication in a wireless communication system claim 1 , the UE comprising:a radio frequency (RF) unit; anda processor,wherein the processor is configured to transmit a synchronization signal for D2D communication and a demodulation reference signal (DM-RS) for demodulating the synchronization signal, andwherein a base sequence of the DM-RS is generated using a synchronization reference identity (ID).6. The UE according to claim 5 ,wherein the base sequence is generated based on a value obtained by dividing the synchronization reference ID by a ...

METHOD FOR TRANSMITTING ENHANCED CONTROL CHANNEL IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

The present invention relates to a method for transmitting a downlink control channel in a wireless communication system, and an apparatus therefor. Specifically, the method for transmitting an enhanced a physical downlink control channel (EPDCCH) from a serving cell comprises the steps of: forming a plurality of enhanced resource element groups (EREGs) by dividing available resource elements, comprised in one physical resource block (PRB) pair, into a predetermined number; forming an enhanced control channel element (ECCE), which is a resource allocation unit for the EPDCCH, by selecting one or more EREGs from among the plurality of EREGs; and transmitting the EPDCCH by means of the transmission resource allocated, for each ECCE, for the EPDCCH, wherein one or more EREGs forming the ECCE is selected on the basis of a cell identifier of the serving cell and/or an index of the one PRB pair. 1. A method for transmitting an enhanced a physical downlink control channel (EPDCCH) by a serving cell in a wireless communication system , the method comprising the steps of:configuring a plurality of enhanced resource element groups (EREGs) by dividing available resource elements, which are included in one physical resource block (PRB) pair, into a predetermined number;configuring an enhanced control channel element (ECCE), which is a resource allocation unit for the EPDCCH, by selecting one or more EREGs from the plurality of EREGs; andtransmitting the EPDCCH by using transmission resources allocated for the EPDCCH in a unit of the ECCE,wherein one or more EREGs constituting the ECCE are selected on the basis of at least one of cell ID of the serving cell and index of the one PRB pair.2. The method according to claim 1 , wherein the one or more EREGs are selected in accordance with EREG index configured by performing permutation for the plurality of EREGs.3. The method according to claim 2 , wherein the permutation is performed in accordance with a pattern determined on the ...

METHOD FOR TRANSMITTING AND RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR PERFORMING SAME

A method for receiving a signal by a first terminal in a wireless communication system supporting non-orthogonal multiple access (NOMA) according to an embodiment of the present invention comprises the steps of: receiving a NOMA signal in which signals for each of the first terminal and a second terminal belonging to the same NOMA pair are superposed; and demodulating the signal for the first terminal from the NOMA signal, using at least a part of a NOMA constellation which is configured by considering downlink transmission power and a modulation order for the second terminal, wherein only a bit corresponding to one digit is differently configured between the bit sequences of NOMA constellation points adjacent to each other in the NOMA constellation, and the complex coordinates (I, Q) of the NOMA constellation points are determined on the basis of a combination of downlink transmission power for the first terminal and the downlink transmission power for the second terminal. 1. A method for receiving a signal by a first user equipment (UE) in a wireless communication system supporting non-orthogonal multiple access (NOMA) , the method comprising:receiving a NOMA signal in which a signal for the first UE and a signal for a second UE are superposed, the first UE and the second UE belonging to a same NOMA pair; anddemodulating the signal for the first UE from the NOMA signal using at least part of a NOMA constellation configured in consideration of downlink transmit power and modulation order for the second UE,wherein only a bit corresponding to one digit is differently configured between the bit sequences of NOMA constellation points adjacent to each other in the NOMA constellation, andwherein complex coordinates (I, Q) of NOMA constellation points are determined based on a combination of downlink transmit power for the first UE and the downlink transmit power for the second UE.2. The method of claim 1 , wherein demodulating the signal for the first UE comprises either ...

METHOD FOR RECEIVING DOWNLINK SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND TERMINAL USING THE SAME

Provided are a method and an apparatus for receiving a downlink signal in a wireless communication system. The method includes receiving resource block assignment information including a bitmap and receiving the downlink signal through a resource block group (RBG) indicated by the bitmap in a bandwidth part. A total number of resource block groups (RBGs) in the bandwidth part is determined based on an index of a start resource block of the bandwidth part, a size of the bandwidth part, and a size of one resource block group. 1. A method of transmitting , by a base station , a downlink signal in a wireless communication system , the method comprising:transmitting resource block (RB) assignment information comprising a bitmap; andtransmitting, in a bandwidth part (BWP), the downlink signal through at least one resource block group (RBG) informed by the bitmap,{'claim-text': {'br': None, 'i': ['N', 'N', 'N', 'P', 'P┐'], 'sub': ['RBG', 'BWP,i', 'BWP,i'], 'sup': ['size', 'start'], '#text': '=┌(+(mod ))/'}, '#text': 'wherein based on the BWP being an i-th BWP among BWPs, a total number of RBGs for the BWP is determined based on:'}{'sub': ['BWP,i', 'BWP,i'], 'sup': ['size', 'start'], '#text': 'where Ndenotes a size of the i-th BWP, Ndenotes an index of a starting RB of the i-th BWP, and P denotes a size of one RBG.'}2. The method of claim 1 , wherein the RB assignment information is transmitted in a field of downlink control information (DCI).3. The method of claim 2 , wherein a number of bits of the field is determined based on the total number of RBGs.4. The method of claim 1 , wherein each bit of the bitmap is related to a respective RBG among the determined RBGs for the BWP and indicates whether the respective RBG is allocated to a user equipment (UE).5. The method of claim 1 , wherein a number of bits of the bitmap is equal to the total number of RBGs for the BWP.6. A base station configured to transmit a downlink signal in a wireless communication system claim 1 , the ...

METHOD AND APPARATUS FOR SHARING SPECTRUM BETWEEN 3GPP LTE AND NR IN WIRELESS COMMUNICATION SYSTEM

A method and apparatus for transmitting a physical random access channel (PRACH) in a wireless communication system is provided. A user equipment (UE) receives multiple PRACH configurations which include a first PRACH configuration for new radio access technology (NR) downlink/uplink (DL/UL) carrier in a NR band and a second PRACH configuration for a supplemental UL carrier in a long-term evolution (LTE) band, and transmits at least one of a first PRACH for accessing the NR DL/UL carrier in the NL band by using a first PRACH power based on the first PRACH configuration, or a second PRACH for accessing the supplemental UL carrier in the LTE band by using a second PRACH power based on the second PRACH configuration. The first PRACH configuration and the second PRACH configuration include different PRACH power configurations. 1. A method performed by a wireless device operating in a wireless communication system , the method comprising:receiving (i) a first physical random access channel (PRACH) configuration for a first uplink (UL) carrier and (ii) a second PRACH configuration for a second UL carrier, wherein the first UL carrier and a DL carrier linked to the first UL carrier belong to a first carrier band, and wherein the second UL carrier belongs to a second carrier band;selecting a UL carrier for a random access procedure, among the first UL carrier and the second UL carrier, based on a result of a reference signal received power (RSRP) measurement on the DL carrier; andperforming the random access procedure on the selected UL carrier based on a PRACH configuration for the selected UL carrier,wherein, based on that the result of the RSRP measurement on the DL carrier is less than a threshold, the second UL carrier is selected as the UL carrier for the random access procedure,wherein, based on the wireless device receiving a UL grant informing a carrier switching between the first UL carrier and the second UL carrier during the random access procedure, the carrier ...

COMMUNICATION METHOD USING MULTIPLE TRANSMISSION POINTS, AND APPARATUS FOR SAME

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for transmitting channel quality information by a terminal in a wireless communication system, the method comprising: receiving information on a plurality of transmission nodes capable of performing CoMP transmission; transmitting first channel state information on one or more preferred transmission nodes from among the plurality of transmission nodes; receiving pattern information consisting of a plurality of combinations of CoMP sets, each of which corresponds to a relevant time interval according to the pattern information; and performing an operation for transmitting second channel state information on the combination of CoMP sets corresponding to a subframe n. 1. A method for transmitting channel quality information by a user equipment in a wireless communication system that supports Coordinated Multiple Point (CoMP) transmission and reception , the method comprising:receiving information according to a plurality of transmission nodes capable of performing CoMP transmission and reception;transmitting first channel state information according to one or more preferred transmission nodes among the plurality of transmission nodes;receiving pattern information configured by a plurality of CoMP set combinations, each of which corresponds to a relevant time interval in accordance with the pattern information; andperforming an operation for transmitting second channel state information according to the CoMP set combination corresponding to a subframe n,wherein the second channel state information is transmitted when the CoMP set combination corresponding to the subframe n is overlapped with the one or more preferred transmission nodes, and the second channel state information is dropped when the CoMP set combination corresponding to the subframe n is not overlapped with the one or more preferred transmission nodes.2. The method ...

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SIGNAL BY DEVICE-TO-DEVICE TERMINAL IN WIRELESS COMMUNICATION SYSTEM

One embodiment of the present invention is a method for a device-to-device (D2D) terminal to transmit and receive a signal in a wireless communication system, the method comprising: receiving downlink control information (DCI) comprising resource allocation information; checking the cyclic redundancy check (CRC) of the DCI by using a D2D radio network temporary identifier (RNTI); and, if there is no error in the result of the CRC check, performing D2D communication on resources denoted in the resource allocation information, wherein if the TPC field of the DCI is a pre-set value, a downlink signal is received from a base station on resources denoted in the resource allocation information. 1. A method for a D2D (Device to Device) user equipment to transceive a signal in a wireless communication system , the method comprising:receiving DCI (Downlink control information) including resource allocation information;making a CRC (Cyclic redundancy check) on the DCI using a D2D RNTI (Radio Network Temporary Identifier);performing D2D communication on a resource indicated in the resource allocation information if a result of the CRC is errorless, wherein a downlink signal is received from a base station on the resource indicated in the resource allocation information if a TPC field value of the DC1 is a preset value.2. The method of claim 1 , wherein the CRC using the D2D RNTI is performed only if a subframe having the DCI received therein is included in a subframe set.3. The method of claim 1 , wherein if the CRC result is errorless and the TPC field value is the preset value claim 1 , a D2D synchronization signal is regarded as not transmitted.4. The method of claim 1 , wherein if the CRC result is errorless and the TPC field value is the preset value claim 1 , the resource indicated in the resource allocation information does not overlap with a resource indicated if the CRC result is errorless but the TPC field value is not the preset value.5. The method of claim 1 , ...

Inter-cell interference coordination in a wireless communication system

A method and a first base station are described for setting measurement resources. Information about setting of a blank subframe of a second base station among a plurality of subframes is received. Resources are set in which a terminal will perform measurement using the information about setting of the blank subframe of the second base station. The information about setting of the blank subframe of the second base station includes a bitmap indicating blank subframes and non-blank subframes of the second base station. In addition, the resources in which the terminal will perform measurement are determined among the blank subframes indicated by the bitmap.

METHOD AND APPARATUS FOR ACQUIRING SYNCHRONIZATION IN RADIO COMMUNICATION SYSTEM

A method for acquiring synchronization by a user equipment (UE) in a radio communication system is disclosed. The method includes receiving a synchronization signal from a first transmission point, and acquiring synchronization to a second transmission point using the synchronization signal and information including a subframe offset received from the first transmission point, wherein the subframe offset is a subframe difference value between the first transmission point and the second transmission point. 1. A method for acquiring synchronization by a user equipment (UE) in a radio communication system , the method comprising:receiving a synchronization signal from a first transmission point; andacquiring synchronization to a second transmission point using the synchronization signal and information including a subframe offset received from the first transmission point,wherein the subframe offset is a subframe difference value between the first transmission point and the second transmission point.2. The method according to claim 1 , wherein acquiring synchronization to the second transmission point comprises:acquiring 5 ms synchronization using a primary synchronization signal included in the synchronization signal to the first transmission point; andacquiring a frame timing using the subframe offset.3. The method according to claim 1 , wherein the synchronization signal is a primary synchronization signal.4. The method according to claim 3 , wherein the synchronization signal further includes a secondary synchronization signal.5. The method according to claim 1 , wherein subframe boundaries of the first transmission point and the second transmission point are aligned.6. The method according to claim 1 , wherein the information including the subframe offset includes information on whether the subframe boundaries of the first transmission point and the second transmission point are aligned.7. The method according to claim 1 , wherein the information including the ...

METHOD FOR PERFORMING MEASUREMENT IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

One embodiment of the present invention comprises a method for a terminal performing a measurement in a wireless communication system. The method for performing a measurement comprises the steps of: a terminal performing a measurement in a particular resource area and transmitting the measurement result to a base station; and receiving information regarding a first signal from the base station, wherein if the terminal is configured to select the resource to be used for transmitting the first signal, the information regarding the first signal includes a resource pool that is determined on the basis of the measurement result. 1. A method of performing a measurement by a user equipment in a wireless communication system , the method comprising:performing the measurement in a prescribed resource area and transmitting a result of the measurement to a base station; andreceiving information on a first signal from the base station,wherein if the user equipment is configured to select a resource for transmitting the first signal, the information on the first signal comprises a resource pool and wherein the resource pool is determined based on the result of the measurement.2. The method of claim 1 , wherein if the base station is configured to allocate the resource for transmitting the first signal claim 1 , the information on the first signal comprises the resource for transmitting the first signal and wherein the resource for transmitting the first signal is determined based on the result of the measurement.3. The method of claim 1 , wherein the user equipment determines the resource for transmitting the first signal in the resource pool.4. The method of claim 2 , wherein if the base station is configured to allocate the resource for transmitting the first signal claim 2 , a first measurement granularity for performing a measurement in the prescribed resource area is different from a second measurement granularity for performing a measurement in the prescribed resource area ...

QUALITY REPORTING METHOD FOR CORESET IN WIRELESS COMMUNICATION SYSTEM, AND TERMINAL USING METHOD

Provided in the present specification is a method by which a terminal transmits a control resource set (CORESET) measurement report in a wireless communication system, the method: receiving CORESET configuration information from a base station, wherein the CORESET configuration information includes information about one or more CORESETs; measuring each of one or more CORESETs; and transmitting the CORESET measurement report to the base station on the basis of the measurement result.

METHOD FOR TRANSMITTING OR RECEIVING D2D SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

According to one embodiment of the present invention, a method by which a terminal for supporting device to device (D2D) communication relays a D2D signal comprises the steps of: transmitting, by the terminal, a D2D signal to be relayed to a neighboring terminal; and relaying a signal transmitted by the neighboring terminal, on the basis of the information on the D2D signal, wherein the information on the D2D signal includes information on D2D power, and the information on the D2D power can be determined by considering a reception power difference between D2D signals transmitted on mutually adjacent frequencies. 1. A method of relaying a device-to-device (D2D) signal by a user equipment (UE) supporting D2D communication , the method comprising:transmitting information on the D2D signal to be relayed by the UE to a neighboring UE; andrelaying a signal transmitted by the neighboring UE based on the information on the D2D signal,wherein the information on the D2D signal comprises information on D2D power andwherein the information on the D2D power is determined in consideration of a reception power difference between D2D signals transmitted on frequencies adjacent to each other.2. The method of claim 1 , wherein the information on the D2D power corresponds to a maximum reception power level of the D2D signal to be relayed by the UE.3. The method of claim 2 , wherein the maximum reception power level corresponds to maximum reception power permitted to a first D2D signal within a range of not causing a decoding failure of a second D2D signal having minimum reception power among the D2D signals transmitted on the frequencies adjacent to each other.4. The method of claim 1 , wherein the information on the D2D power is for reducing interference from reception power of a first D2D signal transmitted on a first frequency claim 1 , to a second D2D signal transmitted on a second frequency.5. The method of claim 4 , wherein the information on the D2D power comprises at least one ...

METHOD FOR TRANSMITTING AND RECEIVING DOWNLINK SIGNAL IN WIRELESS COMMUNICATION SYSTEM, AND DEVICE THEREFOR

The present invention relates to a method and a device for receiving a downlink signal by a terminal in a time division duplex (TDD) wireless communication system supporting a wireless resource usage change. Specifically, the present invention comprises the steps of: configuring system information block (SIB)-based uplink-downlink configuration 0 as an uplink (UL) reference configuration; and receiving downlink control information including a first field which defines an uplink (UL) index or a downlink assignment index, wherein the downlink control information is received through a common search space, and the first field is determined as the uplink (UL) index when a downlink control information (DCI) format relating to the DL control information is DCI format 0. 1. A method for receiving a downlink (DL) control signal in a time division duplex (TDD) wireless communication system supporting reconfiguration of a radio resource , the method comprising:establishing an SIB (System Information Block)-based Uplink-Downlink (UL-DL) configuration 0 as an uplink (UL) reference configuration; andreceiving DL control information containing a first field for defining a UL index or a DL assignment index,wherein the DL control information is received through a common search space,wherein, when a DL control information format (DCI format) associated with the DL control information is DCI format 0, the first field is determined to be a UL index.2. The method according to claim 1 , wherein the DL control information is received through a UE-specific search space claim 1 ,wherein, when a DL control information format (DCI format) associated with the DL control information is DCI format 0 or DCI format 4, the DL control information further contains a second field for defining a DL assignment index.3. The method according to claim 2 , further comprising:transmitting at least one Hybrid ARQ-ACK/NACK (HARQ-ACK/NACK) over a Physical Uplink Shared CHannel (PUSCH), the PUSCH being based on ...

INITIAL ACCESS METHOD AND DEVICE IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a terminal's initial access method in a wireless communication system, the method including: obtaining information including a cell identification (ID) from a synchronous signal; and receiving any one of a first physical broadcast channel (PBCH) and a second PBCH channel depending on to which of a preset range the cell ID corresponds. 1. An initial access method for a user equipment (UE) in a wireless communication system comprising:acquiring information comprising a cell identification (ID) from a synchronous signal; andreceiving one of a first Physical Broadcast Channel (PBCH) and a second PBCH according to a predefined range the cell ID belongs to.2. The initial access method according to claim 1 , wherein the first PBCH is transmitted on a time resource corresponding to first four OFDM symbols of a second slot of subframe #0 and a frequency resource corresponding to center six resource blocks in an entire frequency bandwidth claim 1 , and the second PBCH is transmitted on a time resource corresponding to entire OFDM symbols of a predetermined subframe and a frequency resource corresponding to at least one part of six physical resource block pairs in the entire frequency bandwidth.3. The initial access method according to claim 2 , wherein claim 2 , when the UE needs to receive the second PBCH claim 2 , the UE performs blind decoding for the physical resource block pairs.4. The initial access method according to claim 2 , wherein the predetermined subframe and the physical resource block pairs comprises a resource region claim 2 , the synchronous signal being transmitted in the resource region.5. The initial access method according to claim 2 , wherein the predetermined subframe to where the PBCH is transmitted is indicated by the cell ID.6. The initial access method according to claim 1 , wherein the second PBCH is based on a demodulation reference signal claim 1 , and information for demodulating the demodulation reference ...

METHOD FOR TRANSMITTING OR RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

According to an embodiment of this invention, a method of receiving a downlink signal by a user equipment (UE) in a wireless communication system includes receiving a first control resource set (CORESET) configuration including information regarding a frequency resource of a first CORESET, and receiving a physical downlink control channel (PDCCH) signal by bundling a plurality of resource element groups (REGs) on the first CORESET, wherein the information regarding the frequency resource of the first CORESET may be a bitmap, and wherein the bitmap may allocate the frequency resource of the first CORESET in units of 6-RB such that a residual resource that does not belong to any REG bundle is not present in the first CORESET after every 2, 3, or 6 REGs are bundled into 1 REG bundle. 1. A method of receiving a downlink signal by a user equipment in a wireless communication system , the method comprising:receiving a first control resource set (CORESET) configuration including information regarding a frequency resource of a first CORESET and information regarding a CORESET time duration of the first CORESET; andreceiving a physical downlink control channel (PDCCH) signal in one or more resource element group (REG) bundles on the first CORESET,wherein each REG bundle on the first CORESET consists of 2, 3 or 6 REGs of the first CORESET based on an REG bundle size of 2, 3, or 6,wherein the CORESET time duration is configured to be 2 symbols or 3 symbols,wherein the size of each REG bundle in a frequency domain is one resource block (RB), 2 RBs, or 3 RBs depending on the REG bundle size and the CORESET time duration,wherein the information regarding the frequency resource of the first CORESET is a bitmap which is specific to a first subband allocated to the user equipment among a plurality of subbands included in all bands of a corresponding carrier and the bitmap allocates the frequency resource of the first CORESET in the first subband, andwherein the bitmap allocates the ...