METHOD FOR TRANSMITTING EFFECTIVE CHANNEL STATUS INFORMATION IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE CARRIERS

A method and apparatus for transmitting effective channel status information (CSI) in a wireless communication system supporting multiple carriers are disclosed. The method for indicating CSI transmission in a wireless communication system supporting multiple carriers includes transmitting downlink control information (DCI) including a channel quality information (CQI) request field to a user equipment (UE) over a physical downlink control channel (PDCCH), and receiving CSI reporting of a single downlink carrier or multiple downlink carriers from the UE over a physical uplink shared channel (PUSCH) without receiving uplink data. If the CSI for the single downlink carrier is reported, the number (N) of resource blocks (RBs) established for the CSI reporting is identical to or less than X (N≦X), and if the CSI for the multiple downlink carriers is reported, Nis identical to or less than M (where M>X). 1. A method for indicating channel status information (CSI) transmission in a wireless communication system supporting multiple carriers , the method comprising:transmitting downlink control information (DCI) including a channel quality information (CQI) request field to a user equipment (UE) over a physical downlink control channel (PDCCH); andreceiving channel status information (CSI) reporting of a single downlink carrier or multiple downlink carriers from the user equipment (UE) over a physical uplink shared channel (PUSCH) without receiving uplink data,{'sub': PRB', 'PRB', 'PRB, 'wherein, if the channel status information (CSI) for the single downlink carrier is reported, the number (N) of resource blocks (RBs) established for the CSI reporting is identical to or less than X (N≦X), and if the channel status information (CSI) for the multiple downlink carriers is reported, Nis identical to or less than M (where M>X).'}2. The method according to claim 1 , wherein the CQI request field is 2 bits long claim 1 , and a bit value of the CQI request field is assigned a ...

Method for transmitting control information in wireless communication system and apparatus therefor

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes the steps of configuring a number of resource elements for transmitting the information data; generating coded information data having a specific bit size by applying RM coding to the information data; performing rate matching to the coded information data so that the rate-matched information data can correspond to the configured resource elements; and transmitting the rate-matched information data by using the configured number of resource elements, wherein a minimum value Q'min for the number of resource elements is defined based upon a bit size (O) of the information data and based upon a bit size per symbol (Qm) in accordance with a modulation order.

UPLINK POWER CONTROL METHOD AND USER EQUIPMENT

The present invention relates to an uplink power control method and user equipment, which involve determining a power correction factor by considering the number of antenna ports. According to the present invention, even when a base station transmits the same power control information to the user equipment, the user equipment maps the power control information to another power correction factor and determines an uplink transmission power depending on an uplink transmission condition. Thus, uplink power control can be performed in a more efficient manner. 1. A method for controlling uplink power at a user equipment being equipped with Nnumber of antenna ports (wherein N>1) , the method comprising:receiving a power control command for controlling transmission power of an uplink signal from a base station; anddeciding a transmission power of the uplink signal by using the power control command;transmitting the uplink signal to the base station at the decided transmission power,{'sub': t', 't, 'wherein, when the number of used antenna ports used for the transmission of the uplink signal is equal to N1 (wherein N1 is a positive integer equal to or less than N), the power control command is mapped to a first correction value, so that the transmission power can be decided based upon the first correction value, and when the number of used antenna ports is equal to N2 (wherein N1≠N2, and wherein N2 is a positive integer equal to or less than N), the power control command is mapped to a second correction value, so that the transmission power can be decided based upon the second correction value.'}2. The method of claim 1 , wherein the number of used antenna ports is decided based upon precoding matrix indication information claim 1 , the precoding matrix indication information being received from the base station.3. The method of or claim 1 , further comprising:transmitting the uplink signal at the decided power.4. A user equipment being equipped with Nnumber of antenna ports ...

Method and apparatus for efficient feedback in wireless communication system supporting multiple antennas

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for efficient feedback in a wireless communication system that supports multiple antennas. According to one embodiment of the present invention, a method for transmitting channel status information, CSI, for a downlink transmission through uplink comprises: generating a rank indicator (RI), a first precoding matrix indicator (PMI), a second PMI anc channel quality indicator (CQI) as the CSI for the downlink transmission; and transmitting at least one of the RI, the first PMI, the second PMI and the CQI according to a predetermined order, wherein, when the RI or the first PMI is dropped, the CSI following the dropped CSI is generated based on a RI or a first PMI transmitted previously, wherein a precoding matrix used for the downlink transmission is determined based on a combination of the first PMI and the second PMI.

Method and apparatus for transmitting uplink reference signal in a multi-antenna wireless communication system

A method and apparatus for transmitting a Reference Signal (RS) during retransmission at a User Equipment (UE) in a multi-antenna wireless communication system are disclosed. The RS transmission method includes receiving an uplink grant from a Base Station (BS), initially transmitting data and an RS corresponding to each layer based on the uplink grant, receiving ACKnowledgment/Negative ACKnowledgment (ACK/NACK) information for the initially transmitted data, and retransmitting the RS corresponding to each layer and the data according to the ACK/NACK information. The retransmission includes initializing a cyclic shift value for the RS corresponding to each layer according to a cyclic shift field for RSs included in the uplink grant.

Method and device for transmitting/receiving channel state information in wireless communication system supporting multicarriers

The present invention relates to a wireless communication system, and more particularly, discloses a method and a device for transmitting/receiving channel state information in a wireless communication system supporting multicarriers. The method for transmitting downlink channel state information in the wireless communication system supporting downlink multicarriers, according to one embodiment of the present invention, comprises the following steps: receiving from at least one downlink carrier an uplink grant downlink control information (DCI) including a request for the channel state information; measuring the channel state information of at least one first type downlink carrier; and transmitting the measured channel state information on a physical uplink shared channel (PUSCH) resource indicated by the uplink grant DCI, wherein the downlink multicarriers comprise the first type downlink carrier and a second type downlink carrier, wherein the channel state information on the second type ...

METHOD AND USER EQUIPMENT FOR TRANSMITTING UPLINK SIGNAL, AND METHOD AND BASE STATION FOR RECEIVING UPLINK SIGNAL

A method for transmitting, at a user equipment having N (N being an integer greater than 1) transmission antennas, an uplink signal to a base station and a method for receiving, at the base station, an uplink signal from the user equipment are disclosed. The base station transmits reception capability information of the base station to the user equipment. Reception capability information includes information indicating that the base station may receive a signal transmitted through a maximum of M (M being an integer greater than 1) transmission antennas. The user equipment transmits the uplink signal using N transmission antennas if N is not greater than M and transmits the uplink signal using M transmission antennas if N is greater than M. 1. A method for transmitting , at a user equipment having N (N being an integer greater than 1) transmission antennas , an uplink signal to a base station , comprising:receiving, from the base station, reception capability information of the base station, the reception capability information including information indicating that the base station may receive a signal transmitted through a maximum of M (M being an integer greater than 1) transmission antennas; andtransmitting the uplink signal using N transmission antennas if N is not greater than M and transmitting the uplink signal using M transmission antennas if N is greater than M.2. The method according to claim 1 , further comprising transmitting information indicating N to the base station.3. A method for receiving claim 1 , at a base station claim 1 , an uplink signal from a user equipment having N (N being an integer greater than 1) transmission antennas claim 1 , comprising:transmitting reception capability information of the base station to the user equipment, the reception capability information including information indicating that the base station may receive a signal transmitted through a maximum of M (M being an integer greater than 1) transmission antennas; ...

Apparatus and method for transceiving a signal using a predetermined frame structure in a wireless communication system

Disclosed are an apparatus and method for transceiving a signal using a frame structure appropriate for a high-speed moving body. The method for transceiving a signal using a predetermined frame structure according to the present invention comprises a step of transceiving a signal via a frame having the predetermined frame structure, wherein one frame is constituted by eight subframes, and said frame consists of a type-1 subframe consisting of six orthogonal frequency division multiple access (OFDMA) symbols and a type-2 subframe consisting of seven OFDMA symbols, and said frame has a cyclic prefix length which is either 0, 1/32 of the useful symbol length, 1/64 of the useful symbol length, or 1/128 of the useful symbol length.

Method and apparatus for transmitting channel quality control information using PUCCH format 3 in a wireless access system

A method of coding and transmitting channel quality control information through a physical uplink control channel (PUCCH) is disclosed. The method of transmitting channel state control information (CQI and/or PMI) in a wireless access system includes performing channel coding with respect to the channel state control information according to a payload size of the channel state control information, performing rate matching with respect to the channel state control information coded through channel coding according to physical uplink control channel (PUCCH) format 3, and transmitting the channel state control information using the PUCCH format 3.

METHOD AND USER EQUIPMENT FOR TRANSMITTING UPLINK CONTROL INFORMATION

A user equipment (UE) transmits uplink control information (UCI) of 3 bits or more to a base station (BS) after modulating the UCI into 1-bit or 2-bit sub-UCI units. Here, the UE maps each 1-bit or 2-bit sub-UCI unit to one of a plurality of corner constellation points regardless of modulation order of data which is multiplexed with the UCI. The corner constellation points are points having a maximum Euclidean distance from among a plurality of constellation points corresponding to the modulation order. 1. A method for transmitting n-bit uplink control information from a user equipment to a base station in a wireless communication system , where n is a positive integer greater than 2 , the method comprising:dividing the n-bit uplink control information into ceiling (n/2) sub-groups;mapping each of the sub-groups to one of 4 orthogonal modulation symbols that are complex modulation symbols having a maximum Euclidean distance from among a plurality of modulation symbols corresponding to a modulation order; andtransmitting the mapped uplink control information to the base station.2. The method according to claim 1 , further comprising:multiplexing uplink data with the uplink control information, wherein the mapping maps each of the sub-groups to one of the 4 modulation symbols regardless of a modulation order of the uplink data.3. The method according to claim 2 , wherein the 4 modulation symbols correspond respectively to 4 corner points located at corners from among a plurality of points on a signal constellation corresponding respectively to the plurality of modulation symbols.4. The method according to claim 2 , further comprising:performing channel encoding of each of the sub-groups according to the modulation order of the uplink data, wherein the mapping includes mapping of each of the channel-encoded sub-groups to one of the 4 modulation symbols.5. The method according to claim 4 , wherein the modulation order of the uplink data is one of QPSK claim 4 , 16 QAM ...

Method and Apparatus for Transmitting Control Information in a Wireless Communication System

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting control information in a wireless communication system and to an apparatus for the method, wherein the method comprises a step of receiving a plurality of scheduling information for transmission using a plurality of physical uplink shared channels (PUSCHs), and a step of transmitting uplink control information (UCI) through one PUSCH among the plurality of PUSCHs, if the transmission using the plurality of PUSCHs is present in the subframe which requires a UCI transmission. If a PUSCH transmission is present on a primary resource in the subframe, the UCI is transmitted through the PUSCH of the primary resource. If a PUSCH transmission is not present on the primary resource in the subframe, the UCI is transmitted through the PUSCH of the secondary resource having the smallest index among a plurality of secondary resources on which PUSCH transmissions are present. 1. A method for transmitting control information by a user equipment in a wireless communication system , the method comprising:receiving a plurality of scheduling information for transmission of a plurality of physical uplink shared channels (PUSCHs); andtransmitting uplink control information (UCI) through one PUSCH among the plurality of PUSCHs, if the transmission of the plurality of PUSCHs is present in a subframe which requires UCI transmission,wherein, if there is a PUSCH transmission on a primary resource in the subframe, the UCI is transmitted through the PUSCH of the primary resource, andwherein, if there is no PUSCH transmission on the primary resource in the subframe, the UCI is transmitted through the PUSCH of the secondary resource having the smallest index among a plurality of secondary resources on which PUSCH transmissions are present.2. The method of claim 1 , wherein the primary resource corresponds to a primary component carrier (PCC) claim 1 , ...

Method and user equipment for transmitting uplink signal, and method and base station for receiving uplink signal

A method for transmitting, at a user equipment having N (N being an integer greater than 1) transmission antennas, an uplink signal to a base station and a method for receiving, at the base station, an uplink signal from the user equipment are disclosed. The base station transmits reception capability information of the base station to the user equipment. Reception capability information includes information indicating that the base station may receive a signal transmitted through a maximum of M (M being an integer greater than 1) transmission antennas. The user equipment transmits the uplink signal using N transmission antennas if N is not greater than M and transmits the uplink signal using M transmission antennas if N is greater than M.

Method for transmitting control information in wireless communication system and apparatus therefor

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes configuring a number of resource elements for transmitting the information data; dividing the information data to first information data and second information data if a bit size O of the information data is equal to or larger than a predetermined number; applying RM coding on each of the first information data and the second information data; concatenating the coded first information data and the coded second information data, and transmitting the concatenated data by using the predetermined number of resource elements, wherein a minimum value Q′min for the number of resource elements is defined by a sum of a minimum value Q′min_1 for the number of resource elements corresponding to the first information data and a minimum value Q′min_2 for the number of resource elements corresponding to the second information data.

METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system. The present invention relates to a method for transmitting ACK/NACK in a wireless communication system in which carrier aggregation is set, and an apparatus therefor. Specifically, the present invention relates to an ACK/NACK transmission method and an apparatus therefor, the method comprising the steps of: receiving information on a plurality of physical uplink control channel (PUCCH) resources via upper layer signaling; receiving a transmit power control (TPC) field on a secondary carrier through a physical downlink control channel (PDCCH); receiving data indicated by the PDCCH; and transmitting ACK/NACK for the data, wherein the ACK/NACK is transmitted using a PUCCH resource which is indicated by the value of the TPC field among the plurality of PUCCH resources. 114-. (canceled)15. A method performed by a communication device in a wireless communication system , the method comprising:receiving information associated with a plurality of physical uplink control channel (PUCCH) resources through a higher layer signaling;modulating control information including acknowledgement/negative acknowledgement (ACK/NACK) to provide N modulation symbols;spreading a block of modulation symbols using an orthogonal sequence with a spreading factor M to provide a length-L spread modulation symbol sequence, wherein the block of modulation symbols includes L/M modulation symbols among the N modulation symbols, and L is a number of subcarriers in a resource block (RB);discrete fourier transforming the length-L spread modulation symbol sequence to provide a length-L complex-valued symbol sequence;mapping the length-L complex-valued symbol sequence to resource elements of an orthogonal frequency division multiplexing (OFDM)-based symbol for PUCCH; andtransmitting the mapped length-L complex-valued symbol sequence through the OFDM-based symbol for the PUCCH, wherein a resource for the PUCCH is indicated by PUCCH resource ...

METHOD AND APPARATS FOR PERFORMING EFFICIENT FEEDBACK IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNA

A method for transmitting channel status information (CSI) of downlink transmission via uplink in a wireless communication system includes transmitting a rank indicator (RI) and a precoder type indicator (PTI) at a first subframe, transmitting at a second subframe a first precoding matrix indicator (PMI) when the PTI has a first value and transmitting a second PMI and a wideband channel quality indicator (WB CQI) when the PTI has a second value, and transmitting at a third subframe a second PMI and a WB CQI when the PTI has a first value and transmitting a subband (SB) CQI and a second PMI when the PTI has a second value. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. Subsampled codebooks of precoding codebooks of individual Rank-2, Rank-3 and Rank-4 are applied to the second PMI. 1. A method for transmitting channel status information (CSI) of downlink transmission via uplink in a wireless communication system , the method comprising:transmitting a rank indicator (RI) and a precoder type indicator (PTI) at a first subframe;at a second subframe, transmitting a first precoding matrix indicator (PMI) when the PTI has a first value, and transmitting a second PMI and a wideband channel quality indicator (WB CQI) when the PTI has a second value; andat a third subframe, transmitting a second PMI and a WB CQI when the PTI has a first value, and transmitting a subband (SB) CQI and a second PMI when the PTI has a second value,wherein a user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI, andsubsampled codebooks of precoding codebooks of individual Rank-2, Rank-3 and Rank-4 are applied to the second PMI.5. The method according to claim 1 , wherein:the RI and the PTI are transmitted over a physical uplink control channel (PUCCH) of the first subframe,the first PMI, or the second PMI and WB CQI is transmitted over a PUCCH of the second subframe, ...

Method and apparatus for transmitting control information in a wireless communication system

The present invention relates to a wireless communication system. The present invention relates to a method for transmitting ACK/NACK in a wireless communication system in which carrier aggregation is set, and an apparatus therefor. Specifically, the present invention relates to an ACK/NACK transmission method and an apparatus therefor, the method comprising the steps of: receiving information on a plurality of physical uplink control channel (PUCCH) resources via upper layer signaling; receiving a transmit power control (TPC) field on a secondary carrier through a physical downlink control channel (PDCCH); receiving data indicated by the PDCCH; and transmitting ACK/NACK for the data, wherein the ACK/NACK is transmitted using a PUCCH resource which is indicated by the value of the TPC field among the plurality of PUCCH resources.

Method for transmitting control information in wireless communication system and apparatus therefor

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes the steps of configuring a number of resource elements for transmitting the information data; when a bit size of the information data is equal to or larger than a predetermined number, allocating even-numbered data of the information data as first information data, and allocating odd-numbered data of the information data as second information data; applying RM coding on each of the first information data and the second information data; concatenating the coded first information data and the coded second information data, and transmitting the concatenated data by using the predetermined number of resource elements.

Method and apparatus for multiplexing control information and data, and for transmitting the multiplexed control information and data in a MIMO wireless communication system

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting uplink control information in a wireless communication system. A method for multiplexing uplink control information and uplink data and for transmitting the multiplexed uplink control information and uplink data according to one embodiment of the present invention comprises the following steps: encoding a first transmission block and a second transmission block to generate a first codeword and a second codeword; mapping the first codeword and the second codeword to one or more layers, respectively; and transmitting, via one or more antenna ports, each layer to which the first codeword and the second codeword are mapped, wherein the uplink control information is multiplexed only to either the first transmission block or to the second transmission block.

Method for transmitting control information in wireless communication system and apparatus therefor

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes configuring a number of resource elements for transmitting the information data; dividing the information data to first information data and second information data if a bit size O of the information data is equal to or larger than a predetermined number; applying RM coding on each of the first information data and the second information data; concatenating the coded first information data and the coded second information data, and transmitting the concatenated data by using the predetermined number of resource elements, wherein a minimum value Q′min for the number of resource elements is defined by a sum of a minimum value Q′min_1 for the number of resource elements corresponding to the first information data and a minimum value Q′min_2 for the number of resource elements corresponding to the second information data.

Uplink power control method and user equipment

The present invention relates to an uplink power control method and user equipment, which involve determining a power correction factor by considering the number of antenna ports. According to the present invention, even when a base station transmits the same power control information to the user equipment, the user equipment maps the power control information to another power correction factor and determines an uplink transmission power depending on an uplink transmission condition. Thus, uplink power control can be performed in a more efficient manner.

Method for transmitting control information in wireless communication system and apparatus therefor

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes the steps of dividing the information data to first information data and second information data if a bit size O of the information data is equal to or larger than a predetermined number; applying RM coding on each of the first information data and the second information data; concatenating the coded first information data and the coded second information data, and transmitting the concatenated data.

METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system, and more specifically, to an ACK/NACK (Acknowledgement/Negative ACK) transmission method in a wireless communication system and an apparatus therefor. The ACK/NACK transmission method preformed by user equipment in a wireless communication system comprises: receiving a PDCCH (Physical Downlink Control Channel); receiving a PDSCH (Physical Downlink Shared Channel) indicated by the PDCCH; and transmitting an ACK/NACK for the PDSCH. According to the ACK/NACK transmission method and apparatus of the invention.

Method for transmitting control information in wireless communication system and apparatus therefor

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes the steps of dividing the information data to first information data and second information data if a bit size O of the information data is equal to or larger than a predetermined number; applying RM coding on each of the first information data and the second information data; concatenating the coded first information data and the coded second information data, and transmitting the concatenated data.

METHOD FOR PERFORMING CHANNEL INTERLEAVING IN A MULTI-ANTENNA WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME

The present application relates to a method in which a terminal performs channel interleaving in a multi-antenna wireless communication system. More particularly, the method comprises the following steps: constructing both channel quality indicator (CQI) information and coded data information into preset bit-wide vectors to generate a first interleaver input vector sequence; repeating both rank indicator (RI) information and acknowledgement/negative acknowledgement (ACK/NACK) information per the number (N) of transmission layers to generate a second interleaver input vector sequence of preset bit-wide vectors and a third interleaver input vector sequence of preset bit-wide vectors; mapping the first interleaver input vector sequence, the second interleaver input vector sequence, and the third interleaver input vector sequence to an interleaver matrix, respectively; and reading the interleaver matrix by a column basis to generate an output vector sequence. The preset bit-wide is defined by the product of a modulation order (Q) and the number (N) of transmission layers. 112.-. (canceled)13. A method of performing channel interleaving at a user equipment (UE) in a multi-antenna wireless communication system , the method comprising:generating a first interleaver input vector sequence by configuring each of channel quality indicator (CQI) information and coded data as vectors of a predetermined bit unit;{'sub': 'L', 'generating a second interleaver input vector sequence of the predetermined bit unit by repeating coded rank indicator (RI) information by the number Nof transmission layers;'}{'sub': 'L', 'generating a third interleaver input vector sequence of the predetermined bit unit by repeating coded acknowledgement (ACK)/negative ACK (HACK) information by the number Nof transmission layers;'}mapping the first interleaver input vector sequence, the second interleaver input vector sequence and the third interleaver input vector sequence to an interleaver matrix; ...

Method and apparatus for transmitting signals using codebooks in a wireless communication system that supports multiple antennas

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting signals using codebooks in a wireless communication system that supports multiple antennas. A method in which a base station transmits downlink signals according to one embodiment of the present invention comprises the following steps: receiving a first precoding matrix indicator (PMI) and a second precoding matrix indicator from a terminal; determining a first matrix (W1) from a first codebook including precoding matrixes indicated by the first PMI, determining a second matrix (W2) from a second codebook, including precoding matrices indicated by the second PMI, and determining a precoding matrix (W) based on the first matrix (W1) and second matrix (W2); performing precoding on one or more layers, to which the downlink signals are mapped, using the determined precoding matrix (W); and transmitting the precoded signals to the terminal. Each of the precoding ...

Method and apparatus for transmitting control information in wireless communication system

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting acknowledgement/negative ACK (ACK/NACK) in a wireless communication system which supports carrier aggregation, and to an apparatus for the method. A method in which a terminal transmits ACK/NACK in a wireless communication system that supports carrier aggregation comprises the following steps: receiving one or more physical downlink shared channels (PDSCHs); and transmitting ACK/NACK for said one or more PDSCHs via a physical uplink control channel (PUCCH). A PUCCH format for transmitting ACK/NACK is selected by taking the type of the carrier in which said one or more PDSCHs are received into account.

Method and apparatus for performing effective feedback in wireless communication system supporting multiple antennas

A method for transmitting channel status information (CSI) of downlink multi-carrier transmission includes generating the CSI including at least one of a rank indicator (RI), a first precoding matrix index (PMI), a second PMI and a channel quality indicator (CQI) for one or more downlink carriers, the CQI being calculated based on precoding information determined by a combination of the first and second PMIs, determining, when two or more CSIs collide with one another in one uplink subframe of one uplink carrier, a CSI to be transmitted on the basis of priority, and transmitting the determined CSI over a uplink channel. If a CSI including an RI or a wideband first PMI collides with a CSI including a wideband CQI or a subband CQI, the CSI including a wideband CQI or a subband CQI has low priority and is dropped.

Method and device for determining precoding information for uplink multi-antenna transmission

The present invention relates to a method for allowing a terminal to transmit uplink data through an HARQ method in a wireless communication system that supports MIMO transmission comprises the steps of: transmitting a plurality of data blocks to a base station on the basis of an uplink grant; receiving, from the base station, control information which indicates a NACK for some data blocks among the plurality of data blocks; selecting, according to a predetermined rule shared in the terminal and the base station, a precoding matrix which is to be applied to the data blocks for which the NACK is indicated; and retransmitting the data blocks, for which the NACK is indicated, to the base station by applying the selected precoding matrix.

Method and apparatus for performing efficient feedback in wireless communication system supporting multiple antenna

A method for transmitting channel status information (CSI) of downlink transmission via uplink in a wireless communication system includes transmitting a rank indicator (RI) and a precoder type indicator (PTI) at a first subframe, transmitting at a second subframe a first precoding matrix indicator (PMI) when the PTI has a first value and transmitting a second PMI and a wideband channel quality indicator (WB CQI) when the PTI has a second value, and transmitting at a third subframe a second PMI and a WB CQI when the PTI has a first value and transmitting a subband (SB) CQI and a second PMI when the PTI has a second value. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. Subsampled codebooks of precoding codebooks of individual Rank-2, Rank-3 and Rank-4 are applied to the second PMI.

METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE ANTENNAS

The present invention relates to a method for transmitting channel state information for downlink multicarrier transmission comprises the following steps: generating channel state information for one or more downlink carriers; if two or more channel state information types for one or more downlink carriers collide in a physical uplink control channel (PUCCH) region of one uplink carrier, determining the channel state information type to be transmitted in the PUCCH region of one uplink carrier on the basis of the priority established in accordance with the reporting period of each piece of channel state information; and transmitting the channel state information corresponding to the determined channel state information type, wherein the priority may be established such that the channel state information having a longer reporting period has a higher priority than that of the channel state information having a shorter reporting period. 1. A method for transmitting channel status information , CSI , for a downlink multiple carrier transmission , the method comprising:generating channel status information, CSI, for one or more downlink carrier;determining CSI type to be transmitted on a physical uplink control channel, PUCCH, region of one uplink carrier based on priorities configured according to a reporting period of each CSI, when two or more CSI types for the one or more downlink carriers collide on the PUCCH region of the one uplink carrier; andtransmitting CSI corresponding to the determined CSI type,wherein the priorities are configured as CSI having longer reporting period have higher priority than CSI having shorter reporting period.2. The method according to claim 1 ,wherein CSI other than the determined CSI type is dropped.3. The method according to claim 1 , a first type for channel quality information, CQI, of subband selected by a user equipment, UE,', 'a second type for subband CQI and a second precoding matrix index, PMI, feedback,', 'a third type for ...

Method and apparatus for multiplexing control information and data, and for transmitting the multiplexed control information and data in a MIMO wireless communication system

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting uplink control information in a wireless communication system. A method for multiplexing uplink control information and uplink data and for transmitting the multiplexed uplink control information and uplink data according to one embodiment of the present invention comprises the following steps: encoding a first transmission block and a second transmission block to generate a first codeword and a second codeword; mapping the first codeword and the second codeword to one or more layers, respectively; and transmitting, via one or more antenna ports, each layer to which the first codeword and the second codeword are mapped, wherein the uplink control information is multiplexed only to either the first transmission block or to the second transmission block.

APPARATUS AND METHOD FOR TRANSCEIVING A SIGNAL USING A PREDETERMINED FRAME STRUCTURE IN A WIRELESS COMMUNICATION SYSTEM

Disclosed are an apparatus and method for transceiving a signal using a frame structure appropriate for a high-speed moving body. The method for transceiving a signal using a predetermined frame structure according to the present invention comprises a step of transceiving a signal via a frame having the predetermined frame structure, wherein one frame is constituted by eight subframes, and said frame consists of a type-1 subframe consisting of six orthogonal frequency division multiple access (OFDMA) symbols and a type-2 subframe consisting of seven OFDMA symbols, and said frame has a cyclic prefix length which is either 0, 1/32 of the useful symbol length, 1/64 of the useful symbol length, or 1/128 of the useful symbol length. 1. A method for transceiving signals using a predetermined frame structure in a wireless communication system , the method comprising:transceiving signals via a frame based on the predetermined frame structure,wherein one frame is constituted by 8 subframes in the predetermined the frame structure, and the frame consists of a type-1 subframe consisting of 6 OFDMA (Orthogonal Frequency Division Multiple Access) symbols and a type-2 subframe consisting of 7 OFDMA symbols, and the frame has a CP (Cyclic Prefix) time which is either 0, 1/32 of a effective symbol time, 1/64 of the effective symbol time, or 1/128 of the effective symbol time.2. The method of claim 1 , wherein the frame is a TDD (Time Division Duplex) frame or a FDD (Frequency Division Duplex) frame.3. The method of claim 2 , wherein the FDD frame consists of 2 Type-1 subframes and 6 Type-2 subframes when the CP time is 0 or 1/128 of the effective symbol time.4. The method of claim 2 , wherein the FDD frame consists of 3 Type-1 subframes and 5 Type-2 subframes when the CP time is 1/32 or 1/64 of the effective symbol time.5. The method of claim 2 , wherein the TDD frame consists of 3 Type-1 subframes and 5 Type-2 subframes when the CP time is 0 or 1/128 of the effective symbol time.6 ...

Method and apparatus for transmitting uplink reference signal in a multi-antenna wireless communication system

A method is presented for transmitting signals at a User Equipment (UE) in a multi-antenna wireless communication system. Acknowledgment (ACK)/negative ACK (NACK) information is received from a base station (BS). At least one transport block negatively acknowledged by the ACK/NACK information is retransmitted to the BS. An uplink grant for retransmitting the at least one transport block is not detected. If a number of the at least one transport block is not equal to a number of transport blocks indicated by a most recent uplink grant, cyclic shift values and orthogonal cover codes (OCCs) of a demodulation reference signal (DMRS) for the at least one transport block are configured based on a cyclic shift field included in the most recent uplink grant and a number of layers corresponding to the at least one transport block.

Method and device for transmitting control information in a wireless communication system

The present invention relates to a wireless communication system. In more detail, in relation to a method for a terminal to transmit ACK/NACK in a wireless communication system, an ACK/NACK transmission method includes: receiving at least one Physical Downlink Shared Channel (PDSCH); transmitting at least one ACK/NACK corresponding to the at least one PDSCH through a plurality of Physical Uplink Control Channel (PUCCH) formats; and, when the at least one ACK/NACK is transmitted using a first PUCCH format, transmitting at least one ACK/NACK in an antenna port transmission mode set for a second PUCCH format.

Method for performing channel interleaving in a multi-antenna wireless communication system, and apparatus for same

A method of transmitting a signal to a base station at a user equipment (UE) in a multi-antenna wireless communication system, can include generating interleaver input vector sequences, wherein the interleaver input vector sequences comprise vectors having a predetermined bit size, mapping the interleaver input vector sequences to an interleaver matrix, generating an output bit sequence by reading the interleaver matrix column by column, and transmitting the output bit sequence to the base station, wherein the predetermined bit size is defined by a product of a modulation order Qpm and the number NL of transmission layers.

Method for transmitting control information in wireless communication system and apparatus therefor

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is provided. The method includes configuring a number of resource elements for transmitting the information data; generating coded information data having a specific bit size by applying RM coding to the information data; performing rate matching to the coded information data so that the rate-matched information data can correspond to the configured resource elements; and transmitting the rate-matched information data by using the configured number of resource elements, where a minimum value Qmin for the number of resource elements is defined based upon a bit size (O) of the information data and based upon a bit size per symbol (Qm) in accordance with a modulation order.

Apparatus and method for transmitting/receiving signals by using a preset frame structure in a wireless communication system

The present invention relates to an apparatus and a method for transmitting/receiving signals by using a preset frame structure in a wireless communication system. As there are difficulties ensuring the link capacity and quality for a high speed moving object with the existing frame structure and the antenna arrangement and communication system based on the existing scheme, a new frame structure needs to be proposed. According to one example of those newly proposed frame structures, one frame is composed of 8 subframes, each of the 8 subframes being composed of orthogonal frequency division multiple access (OFDMA) symbols in a range of 11 to 14, and the cyclic prefix (CP) length of the frame is 1/8 or less of an effective symbol length (e.g., 1/8, 1/16, 1/31, 1/64).

Method and apparatus for efficient feedback in a wireless communication system supporting multiple antennas

A method and apparatus for performing effective feedback in a wireless communication system supporting multiple antennas. A method for transmitting CSI of downlink transmission via uplink in a wireless communication system includes transmitting a joint-coded rank indicator (RI) and a first wideband (WB) precoding matrix indicator (PMI) at a first subframe, and transmitting a wideband channel quality indicator (WB CQI) and a second WB PMI at a second subframe. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. If the RI is Rank-1 or Rank-2, the first PMI indicates one of subsets each having 8 indexes from among 16 indexes of the first PMI of a precoding codebook.

Method and apparatus for efficient feedback in a wireless communication system supporting multiple antenna

A method for transmitting channel status information (CSI) via uplink in a wireless communication system includes transmitting a first precoding matrix indicator (PMI) and a second PMI at a subframe. A subsampled codebook for each of a precoding codebook for Rank-1 and a precoding codebook for Rank-2 is determined based on at least the first PMI or the second PMI. In case of the Rank-1 or the Rank-2, a number of elements for the first PMI is 8.

METHOD AND APPARATUS FOR TRANSMITTING SIGNALS USING CODEBOOKS IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE ANTENNAS

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting signals using codebooks in a wireless communication system that supports multiple antennas. A method in which a base station transmits downlink signals according to one embodiment of the present invention comprises the following steps: receiving a first precoding matrix indicator (PMI) and a second precoding matrix indicator from a terminal; determining a first matrix (W1) from a first codebook including precoding matrixes indicated by the first PMI, determining a second matrix (W2) from a second codebook, including precoding matrices indicated by the second PMI, and determining a precoding matrix (W) based on the first matrix (W1) and second matrix (W2); performing precoding on one or more layers, to which the downlink signals are mapped, using the determined precoding matrix (W); and transmitting the precoded signals to the terminal. Each of the precoding matrices included in the first codebook is a block diagonal matrix, and one block has, as compared to the other block, a form multiplied by a predetermined phase value. 1. A method of transmitting a downlink signal , which is transmitted by a base station , comprising the steps of:{'sup': st', 'nd, 'receiving a 1PMI (precoding matrix indicator) and a 2PMI from a user equipment;'}{'sup': st', 'st', 'st', 'nd', 'nd', 'nd', 'st', 'nd, 'determining a 1matrix (W1) from a 1codebook including precoding matrixes indicated by the 1PMI, determining a 2matrix (W2) from a 2codebook including precoding matrixes indicated by the 2PMI, determining a precoding matrix (W) based on the 1matrix (W1) and the 2matrix (W2);'}performing a precoding on at least one layer having the downlink signal mapped thereto using the determined precoding matrix (W); andtransmitting the precoded signal to the user equipment,{'sup': 'st', 'wherein each of the precoding matrixes included in the 1code book is configured ...

Method and base station for transmitting downlink signal and method and equipment for receiving downlink signal

A base station of the present invention configures resources in which a downlink signal is to be transmitted with zero power using resource sets defined for a specific number of antenna ports, regardless of the number of antenna ports actually configured in the base station, and transmits resource information indicating the configured resources to a user equipment. The user equipment of the present invention receives a downlink transmission from the base station, assuming that transmission power of resources corresponding to a resource set indicated by the resource information is zero.

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

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes the steps of dividing the information data to first information data and second information data if a bit size O of the information data is equal to or larger than a predetermined number; applying RM coding on each of the first information data and the second information data; concatenating the coded first information data and the coded second information data, and transmitting the concatenated data. 1. In a method for transmitting information data by using an RM (Reed-Muller) coding scheme in a wireless communication system , a method for transmitting information data comprising:dividing the information data to first information data and second information data if a bit size O of the information data is equal to or larger than a predetermined number;applying RM coding on each of the first information data and the second information data;concatenating the coded first information data and the coded second information data, andtransmitting the concatenated data.3. The method of claim 1 , wherein the step of applying RM coding comprises:configuring a number Q′ of resource elements for transmitting the information data based upon a bit size O of the information data;{'sub': 1', '2, 'allocating the calculated number Q′ of resource elements equally to a first number Q′ of resource elements for the first information data and to a second number Q′ of resource elements for the second information data; and'}{'sub': 1', '2, 'performing rate matching so that the first number Q′ of resource elements can correspond to the coded first information data, and performing rate matching so that the second number Q′ of resource elements can correspond to the coded second information data.'}4. The method of claim 3 , wherein the step of transmitting the combined data comprises:transmitting the concatenated first information data and second ...

Method and apparatus for efficient feedback in a wireless communication system that supports multiple antennas

The present invention relates to a method for transmitting channel state information for downlink multicarrier transmission comprises the following steps: generating channel state information for one or more downlink carriers; if two or more channel state information types for one or more downlink carriers collide in a physical uplink control channel (PUCCH) region of one uplink carrier, determining the channel state information type to be transmitted in the PUCCH region of one uplink carrier on the basis of the priority established in accordance with the reporting period of each piece of channel state information; and transmitting the channel state information corresponding to the determined channel state information type, wherein the priority may be established such that the channel state information having a longer reporting period has a higher priority than that of the channel state information having a shorter reporting period.

Method and device for transmitting control information in wireless communication system

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting CSI in a wireless communication system, the method comprising: a step for configuring a plurality of serving cells; and a step for reporting the CSI of only one serving cell in a corresponding subframe, wherein the step for reporting the CSI of only one serving cell comprises: excluding reporting the CSI of a lower priority when CSI reports of the plurality of serving cells in the corresponding subframe collide; and excluding reporting the CSI of serving cells other than the serving cell having the smallest index when the CSI reports of different serving cells having the same priority in the corresponding subframe collide.

METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting CSI in a wireless communication system, the method comprising: a step for configuring a plurality of serving cells; and a step for reporting the CSI of only one serving cell in a corresponding subframe, wherein the step for reporting the CSI of only one serving cell comprises: excluding reporting the CSI of a lower priority when CSI reports of the plurality of serving cells in the corresponding subframe collide; and excluding reporting the CSI of serving cells other than the serving cell having the smallest index when the CSI reports of different serving cells having the same priority in the corresponding subframe collide. 1. A method for performing a channel state information (CSI) report in a wireless communication system , the method comprising:configuring a plurality of serving cells; andperforming a CSI report of only a single serving cell in a corresponding subframe, if CSI reports of a plurality of serving cells collide with each other in the corresponding subframe, dropping one or more CSI reports having lower priorities, and', 'if CSI reports of different serving cells having a same priority collide with each other in the corresponding subframe, dropping CSI reports of one or more serving cells other than one serving cell having the lowest index., 'wherein the performing of the CSI report of only the single serving cell includes2. The method of claim 1 , further comprising:if CSI reports of different serving cells having the same priority collide with each other in the corresponding subframe, transmitting a CSI report of the serving cell having the lowest index.3. The method of claim 1 , wherein priority of the CSI report is determined according to a physical uplink control channel (PUCCH) report type.4. The method of claim 1 , wherein:the CSI report includes at least one of a channel quality indicator ( ...

Method and device for transmitting control information in a wireless communication system

The present invention relates to a wireless communication system. In more detail, in relation to a method for a terminal to transmit ACK/NACK in a wireless communication system, an ACK/NACK transmission method includes: receiving at least one Physical Downlink Shared Channel (PDSCH); transmitting at least one ACK/NACK corresponding to the at least one PDSCH through a plurality of Physical Uplink Control Channel (PUCCH) formats; and, when the at least one ACK/NACK is transmitted using a first PUCCH format, transmitting at least one ACK/NACK in an antenna port transmission mode set for a second PUCCH format.

Method and device for transmitting control information in a wireless communication system

The present invention relates to a wireless communication system. In more detail, in relation to a method for a terminal to transmit ACK/NACK in a wireless communication system, an ACK/NACK transmission method includes: receiving at least one Physical Downlink Shared Channel (PDSCH); transmitting at least one ACK/NACK corresponding to the at least one PDSCH through a plurality of Physical Uplink Control Channel (PUCCH) formats; and, when the at least one ACK/NACK is transmitted using a first PUCCH format, transmitting at least one ACK/NACK in an antenna port transmission mode set for a second PUCCH format.

Method and apparatus for performing efficient feedback in wireless communication system supporting multiple antenna

A method for transmitting channel status information (CSI) of downlink transmission via uplink in a wireless communication system includes transmitting a rank indicator (RI) and a precoder type indicator (PTI) at a first subframe, transmitting at a second subframe a first precoding matrix indicator (PMI) when the PTI has a first value and transmitting a second PMI and a wideband channel quality indicator (WB CQI) when the PTI has a second value, and transmitting at a third subframe a second PMI and a WB CQI when the PTI has a first value and transmitting a subband (SB) CQI and a second PMI when the PTI has a second value. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. Subsampled codebooks of precoding codebooks of individual Rank-2, Rank-3 and Rank-4 are applied to the second PMI.

Method and apparatus for performing effective feedback in wireless communication system supporting multiple antennas

A method for transmitting channel status information (CSI) of downlink multi-carrier transmission includes generating the CSI including at least one of a rank indicator (RI), a first precoding matrix index (PMI), a second PMI and a channel quality indicator (CQI) for one or more downlink carriers, the CQI being calculated based on precoding information determined by a combination of the first and second PMIs, determining, when two or more CSIs collide with one another in one uplink subframe of one uplink carrier, a CSI to be transmitted on the basis of priority, and transmitting the determined CSI over a uplink channel. If a CSI including an RI or a wideband first PMI collides with a CSI including a wideband CQI or a subband CQI, the CSI including a wideband CQI or a subband CQI has low priority and is dropped.

Method and apparatus for transmitting uplink reference signal in a multi-antenna wireless communication system

A method for transmitting signals at a User Equipment (UE) in a multi-antenna wireless communication system is discussed. The method includes receiving an uplink grant from a Base Station (BS); transmitting transport blocks and Reference Signals (RSs) for the transport blocks via a plurality of layers based on the uplink grant to the BS; receiving Negative ACKnowledgment (NACK) information for at least one transport block among the transport blocks from the BS; and retransmitting the at least one transport block and the RS for the at least one transport block via at least one layer to the BS.

Method and apparatus for transmitting uplink reference signal in a multi-antenna wireless communication system

A method and apparatus for transmitting a Reference Signal (RS) during retransmission at a User Equipment (UE) in a multi-antenna wireless communication system are disclosed. The RS transmission method includes receiving an uplink grant from a Base Station (BS), initially transmitting data and an RS corresponding to each layer based on the uplink grant, receiving ACKnowledgment/Negative ACKnowledgment (ACK/NACK) information for the initially transmitted data, and retransmitting the RS corresponding to each layer and the data according to the ACK/NACK information. The retransmission includes initializing a cyclic shift value for the RS corresponding to each layer according to a cyclic shift field for RSs included in the uplink grant.

METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system. The present invention relates to a method for transmitting ACK/NACK in a wireless communication system in which carrier aggregation is set, and an apparatus therefor. Specifically, the present invention relates to an ACK/NACK transmission method and an apparatus therefor, the method comprising the steps of: receiving information on a plurality of physical uplink control channel (PUCCH) resources via upper layer signaling; receiving a transmit power control (TPC) field on a secondary carrier through a physical downlink control channel (PDCCH); receiving data indicated by the PDCCH; and transmitting ACK/NACK for the data, wherein the ACK/NACK is transmitted using a PUCCH resource which is indicated by the value of the TPC field among the plurality of PUCCH resources. 114-. (canceled)15. A method for a user equipment (UE) to transmit acknowledgement/negative ACK (ACK/NACK) in a wireless communication system , the method comprising:receiving information associated with a plurality of physical uplink control channel (PUCCH) resources through a higher layer signaling;modulating control information including the ACK/NACK to provide N modulation symbols;spreading a block of modulation symbols using an orthogonal sequence of a spreading factor M to provide a length-L spread modulation symbol sequence, wherein the block of modulation symbols includes L/M modulation symbols among the N modulation symbols, and L is a number of subcarriers in a resource block (RB);discrete fourier transforming the length-L spread modulation symbol sequence to provide a length-L complex-valued symbol sequence; andtransmitting the length-L complex-valued symbol sequence through a corresponding one of orthogonal frequency division multiplexing (OFDM)-based symbols for PUCCH, wherein a resource for the PUCCH is indicated by PUCCH resource information in a physical downlink control channel (PDCCH) associated with the ACK/NACK from ...

Method for performing channel interleaving in a multi-antenna wireless communication system, and apparatus for same

The present application relates to a method in which a terminal performs channel interleaving in a multi-antenna wireless communication system. More particularly, the method comprises the following steps: constructing both channel quality indicator (CQI) information and coded data information into preset bit-wide vectors to generate a first interleaver input vector sequence; repeating both rank indicator (RI) information and acknowledgement/negative acknowledgement (ACK/NACK) information per the number (NL) of transmission layers to generate a second interleaver input vector sequence of preset bit-wide vectors and a third interleaver input vector sequence of preset bit-wide vectors; mapping the first interleaver input vector sequence, the second interleaver input vector sequence, and the third interleaver input vector sequence to an interleaver matrix, respectively; and reading the interleaver matrix by a column basis to generate an output vector sequence. The preset bit-wide is defined ...

Method and apparatus for performing effective feedback in wireless communication system supporting multiple antennas

A method for transmitting channel status information (CSI) of downlink multi-carrier transmission includes generating the CSI including at least one of a rank indicator (RI), a first precoding matrix index (PMI), a second PMI and a channel quality indicator (CQI) for one or more downlink carriers, the CQI being calculated based on precoding information determined by a combination of the first and second PMIs, determining, when two or more CSIs collide with one another in one uplink subframe of one uplink carrier, a CSI to be transmitted on the basis of priority, and transmitting the determined CSI over a uplink channel. If a CSI including an RI or a wideband first PMI collides with a CSI including a wideband CQI or a subband CQI, the CSI including a wideband CQI or a subband CQI has low priority and is dropped. 1. A method for transmitting channel status information (CSI) of downlink (DL) multi-carrier transmission , the method comprising:generating the CSI including at least one of a rank indicator (RI), a first precoding matrix index (PMI), a second PMI and a channel quality indicator (CQI) for one or more DL carriers, wherein the CQI is calculated based on precoding information determined by a combination of the first and second PMIs;determining, when two or more CSIs collide with one another in one uplink (UL) subframe of one UL carrier, a CSI to be transmitted on the basis of priority; and wherein the CSI is classified into a first group including an RI, a second group including a wideband (WB) first PMI, a third group including a WB CQI, and a fourth group including an SB CQI, and', 'wherein the priority is defined that, if a CSI of the first group or a CSI of the second group collides with a CSI of the third group or a CSI of the fourth group, the CSI of the third or fourth group has low priority and is dropped., 'transmitting the determined CSI over a UL channel,'}2. The method according to claim 1 , wherein the CSI of the first group and the CSI of the ...

Method for transmitting control information in wireless communication system and apparatus therefor

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes configuring a number of resource elements for transmitting the information data; dividing the information data to first information data and second information data if a bit size O of the information data is equal to or larger than a predetermined number; applying RM coding on each of the first information data and the second information data; concatenating the coded first information data and the coded second information data, and transmitting the concatenated data by using the predetermined number of resource elements, wherein a minimum value Qmin for the number of resource elements is defined by a sum of a minimum value Qmin1 for the number of resource elements corresponding to the first information data and a minimum value Qmin2 for the number of resource elements corresponding to the second information data.

METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting CSI in a wireless communication system, the method comprising: a step for configuring a plurality of serving cells; and a step for reporting the CSI of only one serving cell in a corresponding subframe, wherein the step for reporting the CSI of only one serving cell comprises: excluding reporting the CSI of a lower priority when CSI reports of the plurality of serving cells in the corresponding subframe collide; and excluding reporting the CSI of serving cells other than the serving cell having the smallest index when the CSI reports of different serving cells having the same priority in the corresponding subframe collide. 112-. (canceled)13. A method of transmitting a channel state information (CSI) report by a user equipment (UE) in a wireless communication system , the method comprising:receiving a plurality of periodic CSI report configurations for a plurality of serving cells; andtransmitting one of periodic CSI reports corresponding to the periodic CSI report configurations via a physical uplink control channel (PUCCH) in a subframe,wherein when a periodic CSI report with a rank indicator (RI) and a periodic CSI report with a channel quality indicator (CQI) collide in the subframe, the periodic CSI report with the CQI has lower priority and is dropped, andwherein when both of periodic CSI reports colliding in the subframe have a CQI, a periodic CSI report with a subband CQI has lower priority than a periodic CSI report with a wideband CQI and is dropped.14. The method of claim 13 , wherein when periodic CSI reports with a same priority collide in the subframe claim 13 , CSI reports for one or more serving cells other than one serving cell having the lowest cell index are dropped.15. The method of claim 13 , wherein the periodic CSI periodic configurations includes a first periodic CSI report configuration for ...

Method and device for transmitting control information in wireless communication system

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting CSI in a wireless communication system, the method comprising: a step for configuring a plurality of serving cells; and a step for reporting the CSI of only one serving cell in a corresponding subframe, wherein the step for reporting the CSI of only one serving cell comprises: excluding reporting the CSI of a lower priority when CSI reports of the plurality of serving cells in the corresponding subframe collide; and excluding reporting the CSI of serving cells other than the serving cell having the smallest index when the CSI reports of different serving cells having the same priority in the corresponding subframe collide.

Method for performing channel interleaving in a multi-antenna wireless communication system, and apparatus for same

A method and user equipment (UE) for transmitting a signal to a base station in a multi-antenna wireless communication system are discussed. The method can include mapping interleaver input vector sequences to an interleaver matrix, wherein each of the interleaver input vector sequences comprises vectors having a bit size of NL·Qm, wherein Qm is a modulation order and NL is a number of transmission layers, reading out the interleaver matrix column by column for obtaining output bit sequences, and transmitting the output bit sequences through the transmission layers to the base station.

Method and base station for transmitting downlink signal and method and equipment for receiving downlink signal

A base station of the present invention configures resources in which a downlink signal is to be transmitted with zero power using resource sets defined for a specific number of antenna ports, regardless of the number of antenna ports actually configured in the base station, and transmits resource information indicating the configured resources to a user equipment. The user equipment of the present invention receives a downlink transmission from the base station, assuming that transmission power of resources corresponding to a resource set indicated by the resource information is zero.

Method and device for transmitting control information in wireless communication system

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting CSI in a wireless communication system, the method comprising: a step for configuring a plurality of serving cells; and a step for reporting the CSI of only one serving cell in a corresponding subframe, wherein the step for reporting the CSI of only one serving cell comprises: excluding reporting the CSI of a lower priority when CSI reports of the plurality of serving cells in the corresponding subframe collide; and excluding reporting the CSI of serving cells other than the serving cell having the smallest index when the CSI reports of different serving cells having the same priority in the corresponding subframe collide.

METHOD AND APPARATUS FOR PERFORMING CHANNEL MEASUREMENT IN A DISTRIBUTED MULTI-NODE SYSTEM

The present description relates to a method for receiving a reference signal (RS) in a distributed multi-node system, comprising: a step of receiving, from a base station, channel state information reference signal (CSI-RS) configuration information which indicates the configuration of the channel state information reference signal the power of which is nonzero; and a step of receiving a channel state information reference signal for at least one node in a cell on the basis of the channel state information reference signal configuration information, wherein said channel state information reference signal with non-zero power has at least one configuration, and is received via at least one subframe. 1. A method of receiving a reference signal (RS) in a distributed multi-node system , the method comprising the steps of:receiving channel state information reference signal configuration information from a base station, wherein the channel state information reference signal configuration information indicates a non-zero power configuration of a channel state information reference signal (CSI-RS); andreceiving a channel state information reference signal on at least one node in a cell based on the channel state information reference signal configuration information, wherein the non-zero power channel state information reference signal has at least one configuration and is received through at least one subframe.2. The method of claim 1 , wherein in a case where the non-zero power CSI-RS is received through at least two subframes claim 1 , the non-zero power CSI-RS is received at a predetermined frame offset interval or at an integer-multiple duty cycle interval based on the first received subframe.3. The method of claim 1 , further comprising the step of receiving from the base station CSI-RS type indication information that indicates whether the CSI-RS is for channel state information (CSI) feedback or for node information feedback.4. The method of claim 3 , wherein node ...

Method and apparatus for efficient feedback in a wireless communication system supporting multiple antenna

A method for transmitting channel status information (CSI) via uplink in a wireless communication system includes transmitting a first precoding matrix indicator (PMI) and a second PMI at a subframe. A subsampled codebook for each of a precoding codebook for Rank-1 and a precoding codebook for Rank-2 is determined based on at least the first PMI or the second PMI. In case of the Rank-1 or the Rank-2, a number of elements for the first PMI is 8.

METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNAS

A method and apparatus for performing effective feedback in a wireless communication system supporting multiple antennas. A method for transmitting CSI of downlink transmission via uplink in a wireless communication system includes transmitting a joint-coded rank indicator (RI) and a first wideband (WB) precoding matrix indicator (PMI) at a first subframe, and transmitting a wideband channel quality indicator (WB CQI) and a second WB PMI at a second subframe. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. If the RI is Rank-1 or Rank-2, the first PMI indicates one of subsets each having 8 indexes from among 16 indexes of the first PMI of a precoding codebook. 1. A method for transmitting channel status information (CSI) of downlink transmission via uplink in a wireless communication system , the method comprising:transmitting a joint-coded rank indicator (RI) and a first wideband (WB) precoding matrix indicator (PMI) at a first subframe; andtransmitting a wideband channel quality indicator (WB CQI) and a second WB PMI at a second subframe;wherein a user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI, andif the RI is Rank-1 or Rank-2, the first PMI indicates one of subsets each having 8 indexes from among 16 indexes of the first PMI of a precoding codebook.2. The method according to claim 1 , wherein the 8 indexes contained in each subset of the first PMI in the precoding codebook are indexes other than overlapped beams from among beams generated by a precoding matrix applied to the downlink transmission.4. The method according to claim 1 , wherein the second PMI indicates one of 16 indexes of the second PMI in the precoding codebook.5. The method according to claim 1 , wherein:the joint-coded RI and the first PMI are transmitted over a physical uplink control channel (PUCCH) of the first subframe, andthe CQI and the second PMI are ...

Method and device for transmitting control information in wireless communication system

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting CSI in a wireless communication system, the method comprising: a step for configuring a plurality of serving cells; and a step for reporting the CSI of only one serving cell in a corresponding subframe, wherein the step for reporting the CSI of only one serving cell comprises: excluding reporting the CSI of a lower priority when CSI reports of the plurality of serving cells in the corresponding subframe collide; and excluding reporting the CSI of serving cells other than the serving cell having the smallest index when the CSI reports of different serving cells having the same priority in the corresponding subframe collide.

METHOD AND APPARATUS FOR TRANSCEIVING A PRECODED SIGNAL IN A MULTIPLE ANTENNA SUPPORTED WIRELESS COMMUNICATION SYSTEM

The present invention relates to a method for transmitting a signal from a transmitter to a receiver through N number of transmitting antennas (where N≧2), comprising: selecting a first and a second matrix from a first and a second codebook related to a first and a second precoding matrix indicator (PMI), respectively, and determining a precoding matrix on the basis of the first and second matrix; performing precoding by using the determined precoding matrix for L number of layers (where 1≦L≦N) to which a signal to be transmitted to the receiver is mapped; and transmitting the precoded signal to the receiver through the N number of transmitting antennas. Here, the first codebook includes one or more diagonal matrices having an N×N size, non-zero elements in the diagonal matrix has a predetermined phase value, and the second codebook includes one or more matrices having an N×L size. 1. A method for transmitting a signal to a receiver through N (N≧2) transmission antennas in a transmitter , comprising:selecting a first matrix from a first codebook associated with a first Precoding Matrix Indicator (PMI), selecting a second matrix from a second codebook associated with a second PMI, and determining a precoding matrix based on the first and second matrices;performing precoding using the determined precoding matrix with respect to L (1≦L≦N) layers to which a signal to be transmitted to the receiver is mapped; andtransmitting the precoded signal to the receiver through the N transmission antennas,wherein the first codebook includes one or more diagonal matrices each having N×N size, elements other than 0 in each of the diagonal matrices have prescribed phase values, and the second codebook includes one or more matrices each having N×L size.2. The method of claim 1 , wherein claim 1 , if the number L of the layers is a specific number or more claim 1 , the first codebook is composed of one diagonal matrix of an identity matrix.3. The method of claim 2 , wherein the ...

METHOD AND DEVICE FOR EFFICIENT FEEDBACK IN WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE ANTENNAS

The present invention relates to a method for allowing a terminal to transmit CSI for downlink transmission from a base station through an uplink comprises the steps of: receiving a downlink signal through a downlink channel; generating CSI that contains one or more indicators among an RI, a PMI, and CQI for the downlink channel; and transmitting the CSI through an uplink channel, wherein the CSI can contain one or more pieces of information among a first type of CSI which is determined on the basis of a rank N that is determined by the terminal and a second type of CSI which is determined on the basis of a rank that is restricted by a reference value M. 128-. (canceled)29. A method for transmitting channel state information , CSI , for a downlink transmission from a base station at a user equipment , UE , through an uplink in a wireless communication system , the method , comprising:receiving a downlink signal through a downlink channel;generating the CSI including at least one of a rank indicator, RI, a precoding matrix indicator, PMI, and a channel quality indicator, CQI, for the downlink channel; andtransmitting the CSI through an uplink channel,wherein the CSI includes at least one of a first type CSI that is determined based on rank N determined by the UF and a second type CSI that is determined based on a rank restricted by a reference value M.30. The method according to claim 29 ,wherein the CSI includes the first type CSI and the second type CSI if N>M, andwherein the CSI include the first type CSI if N≦M.31. The method according to claim 29 ,wherein the uplink channel is a physical uplink shared channel, PUSCH, andwherein the first type CSI or the second type CSI is transmitted based on downlink control information, DCI, including a CSI report request field.32. The method according to .wherein the first type CSI is transmitted, if information on scheduling uplink multiple transport blocks is included in the DCI or information on the reference value M is ...

Method and base station for transmitting downlink signal and method and equipment for receiving downlink signal

A base station of the present invention configures resources in which a downlink signal is to be transmitted with zero power using resource sets defined for a specific number of antenna ports, regardless of the number of antenna ports actually configured in the base station, and transmits resource information indicating the configured resources to a user equipment. The user equipment of the present invention receives a downlink transmission from the base station, assuming that transmission power of resources corresponding to a resource set indicated by the resource information is zero.

METHOD FOR CONTROLLING UPLINK TRANSMISSION POWER FOR TRANSMITTING A PLURALITY OF CODEWORDS IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS A PLURALITY OF ANTENNAS, AND APPARATUS FOR PERFORMING THE METHOD

Disclosed are a method for controlling uplink transmission power for transmitting a plurality of codewords in a wireless communication system that supports a plurality of antennas, and a terminal apparatus for the method. The terminal apparatus for controlling uplink transmission power for transmitting a plurality of codewords in a wireless communication system that supports a plurality of antennas comprises a receiver for receiving, from a base station, a first transmission power control parameter including a first transmission power control indication value related to the uplink transmission power control; and a processor for determining uplink transmission power for transmitting said plurality of codewords based on the amount of information for each unit resource for each code word, if said first transmission power control indication value is not zero, wherein said first transmission power control indication value may be a value corresponding to each codeword. 1. A method for controlling an uplink transmission power for transmission of multiple codewords at a user equipment in a wireless communication system supporting multiple antennas , comprising:receiving a first transmission power control parameter including a first transmission power control indication value related to uplink transmission power control from a base station; anddetermining an uplink transmission power for transmission of the multiple codewords based on the amount of corresponding information per unit resource of each of the multiple codewords, if the first transmission power control indication value is not 0,wherein the first transmission power control indication value is a value corresponding to each of the multiple codewords.2. The method according to claim 1 , wherein the determining further comprises:calculating a second transmission power control parameter related to the amount of corresponding information per unit resource of each of the multiple codewords,wherein the uplink ...

Method and device for transmitting control information in wireless communication system

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting CSI in a wireless communication system, the method comprising: a step for configuring a plurality of serving cells; and a step for reporting the CSI of only one serving cell in a corresponding subframe, wherein the step for reporting the CSI of only one serving cell comprises: excluding reporting the CSI of a lower priority when CSI reports of the plurality of serving cells in the corresponding subframe collide; and excluding reporting the CSI of serving cells other than the serving cell having the smallest index when the CSI reports of different serving cells having the same priority in the corresponding subframe collide.

Method and apparatus for transmitting channel quality control information using PUCCH format 3 in a wireless access system

A method of transmitting uplink control information (UCI) in a wireless access system supporting carrier aggregation. A user equipment (UE) receives two or more physical downlink shared channels (PDSCHs) via two or more downlink component carriers, respectively. The UE performs channel coding with respect to the UCI according to a payload size of the UCI including acknowledgement information and channel quality information (CQI) for each of the two or more downlink carriers. The UE performs rate matching with respect to the channel coded UCI for a physical uplink control channel (PUCCH) format 3. The UE transmits the rate matched UCI using the PUCCH format 3.

METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNA

A method and apparatus for transmitting effective channel status information (CSI) in a wireless communication system supporting multiple carriers are disclosed. A method for transmitting CSI of DL transmission via uplink in a wireless communication system includes transmitting a rank indicator (RI) at a first subframe, and transmitting a first precoding matrix indicator (PMI), a second PMI, and a wideband (WB) channel quality indicator (CQI) at a second subframe. UE preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. A subsampled codebook for each precoding codebook of ranks from Rank-1 to Rank-4 is applied to the first PMI and the second PMI, and a sum of the first PMI and the second PMI for each of Rank-1 to Rank-4 is comprised of 4 bits.

Method for controlling uplink transmission power for transmitting a plurality of codewords in a wireless communication system that supports a plurality of antennas, and apparatus for performing the method

Disclosed are a method for controlling uplink transmission power for transmitting a plurality of codewords in a wireless communication system that supports a plurality of antennas, and a terminal apparatus for the method. The terminal apparatus for controlling uplink transmission power for transmitting a plurality of codewords in a wireless communication system that supports a plurality of antennas comprises a receiver for receiving, from a base station, a first transmission power control parameter including a first transmission power control indication value related to the uplink transmission power control; and a processor for determining uplink transmission power for transmitting said plurality of codewords based on the amount of information for each unit resource for each code word, if said first transmission power control indication value is not zero, wherein said first transmission power control indication value may be a value corresponding to each codeword.

METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system. In more detail, in relation to a method for a terminal to transmit ACK/NACK in a wireless communication system, an ACK/NACK transmission method includes: receiving at least one Physical Downlink Shared Channel (PDSCH); transmitting at least one ACK/NACK corresponding to the at least one PDSCH through a plurality of Physical Uplink Control Channel (PUCCH) formats; and, when the at least one ACK/NACK is transmitted using a first PUCCH format, transmitting at least one ACK/NACK in an antenna port transmission mode set for a second PUCCH format. 1. A method for transmitting , by a user equipment , an Acknowledgement/Negative Acknowledgement (ACK/NACK) signal in a wireless communication system , comprising:receiving at least one Physical Downlink Shared Channel (PDSCH); andtransmitting at least one ACK/NACK signal corresponding to the at least one PDSCH using one of a plurality of Physical Uplink Control Channel (PUCCH) formats,wherein the at least one ACK/NACK signal is transmitted using an antenna port transmission mode configured for a second PUCCH format when the at least one ACK/NACK signal is transmitted using a first PUCCH format.2. The method of claim 1 , wherein the plurality of PUCCH formats includes a PUCCH format claim 1 , a PUCCH format 1a claim 1 , a PUCCH format 1b claim 1 , and a PUCCH format 3.3. The method of claim 1 , wherein the antenna port transmission mode is a single-antenna port mode or a Spatial Orthogonal Resource Transmit Diversity (SORTD) mode.4. A method for transmitting claim 1 , by a user equipment claim 1 , an Acknowledgement/Negative Acknowledgement (ACK/NACK) signal in a wireless communication system claim 1 , comprising:receiving at least one Physical Downlink Shared Channel (PDSCH); andtransmitting at least one ACK/NACK signal corresponding to the at least one PDSCH using one of a plurality of Physical Uplink Control Channel (PUCCH) formats,wherein the at least one ACK/ ...

Method and device for efficient feedback in wireless communication system that supports multiple antennas

The present invention relates to a method for allowing a terminal to transmit CSI for downlink transmission from a base station through an uplink comprises the steps of: receiving a downlink signal through a downlink channel; generating CSI that contains one or more indicators among an RI, a PMI, and CQI for the downlink channel; and transmitting the CSI through an uplink channel, wherein the CSI can contain one or more pieces of information among a first type of CSI which is determined on the basis of a rank N that is determined by the terminal and a second type of CSI which is determined on the basis of a rank that is restricted by a reference value M.

METHOD AND DEVICE FOR DOWNLINK CONFIRMATION RESPONSE DATA TRANSMISSION RESOURCE ALLOCATION IN A WIRELESS COMMUNICATION SYSTEM

The present invention relates to a method for transmitting downlink hybrid automatic repeat request (HARQ) confirmation response information in a wireless communication system comprises the steps of: receiving, on an uplink data channel, a plurality of codewords from an uplink transmitter; generating items of confirmation response information for each of the plurality of codewords, in accordance with the results of decoding of the plurality of codewords; and transmitting each of the generated items of confirmation response information to the uplink transmitter on each of a plurality of physical HARQ indicator channel (PHICH) resources; wherein each of the plurality of PHICH resources can be allocated for the transmission of confirmation response information for each of the plurality of codewords, based on parameters having different values for each of the codewords. 1. A method for transmitting downlink hybrid automatic repeat request (HARQ) ACK/NACK information in a wireless communication system , the method comprising the steps of:receiving, on an uplink data channel, a plurality of codewords from an uplink transmission entity;generating ACK/NACK information for each of the plurality of codewords, in accordance with the results of decoding of the plurality of codewords; andtransmitting each of the generated ACK/NACK information to the uplink transmission entity on each of a plurality of physical HARQ indicator channel (PHICH) resources,wherein each of the plurality of PHICH resources is allocated for transmission of the ACK/NACK information for each of the plurality of codewords, based on a parameter having different values for each of the codewords.2. The method according to claim 1 , wherein the plurality of PHICH resources include a PHICH group index and a PHICH sequence index claim 1 , and one or more of the PHICH group index and the PHICH sequence index are determined based on the parameter.3. The method according to claim 2 , wherein the PHICH group index ...

Method and apparatus for performing effective feedback in wireless communication system supporting multiple antennas

A method for transmitting channel status information (CSI) of downlink multi-carrier transmission includes generating the CSI including at least one of a rank indicator (RI), a first precoding matrix index (PMI), a second PMI and a channel quality indicator (CQI) for one or more downlink carriers, the CQI being calculated based on precoding information determined by a combination of the first and second PMIs, determining, when two or more CSIs collide with one another in one uplink subframe of one uplink carrier, a CSI to be transmitted on the basis of priority, and transmitting the determined CSI over a uplink channel. If a CSI including an RI or a wideband first PMI collides with a CSI including a wideband CQI or a subband CQI, the CSI including a wideband CQI or a subband CQI has low priority and is dropped.

Method and device for downlink confirmation response data transmission resource allocation in a wireless communication system

The present invention relates to a method for transmitting downlink hybrid automatic repeat request (HARQ) confirmation response information in a wireless communication system comprises the steps of: receiving, on an uplink data channel, a plurality of codewords from an uplink transmitter; generating items of confirmation response information for each of the plurality of codewords, in accordance with the results of decoding of the plurality of codewords; and transmitting each of the generated items of confirmation response information to the uplink transmitter on each of a plurality of physical HARQ indicator channel (PHICH) resources; wherein each of the plurality of PHICH resources can be allocated for the transmission of confirmation response information for each of the plurality of codewords, based on parameters having different values for each of the codewords.

METHOD AND DEVICE FOR TRANSMITTING/RECEIVING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTICARRIERS

The present invention relates to a wireless communication system, and more particularly, discloses a method and a device for transmitting/receiving channel state information in a wireless communication system supporting multicarriers. The method for transmitting downlink channel state information in the wireless communication system supporting downlink multicarriers, according to one embodiment of the present invention, comprises the following steps: receiving from at least one downlink carrier an uplink grant downlink control information (DCI) including a request for the channel state information; measuring the channel state information of at least one first type downlink carrier; and transmitting the measured channel state information on a physical uplink shared channel (PUSCH) resource indicated by the uplink grant DCI, wherein the downlink multicarriers comprise the first type downlink carrier and a second type downlink carrier, wherein the channel state information on the second type downlink carrier may not be transmitted. 1. A method for transmitting downlink Channel State Information (CSI) in a wireless communication system supporting multiple downlink carriers , the method comprising:receiving uplink grant Downlink Control Information (DCI) including a Channel Quality Indicator (CQI) request on one or more downlink carriers;measuring CSI for one or more first-type downlink carriers; andtransmitting the measured CSI in Physical Uplink Shared Channel (PUSCH) resources indicated by the uplink grant DCI,wherein the multiple downlink carriers include the first-type downlink carriers and second-type downlink carriers and CSI for the second-type downlink carriers are not transmitted.2. The method according to claim 1 , wherein the first-type downlink carriers are downlink carriers used in downlink data transmission and the second-type downlink carriers are downlink carriers unused in the downlink data transmission.3. The method according to claim 1 , wherein the ...

Method for transmitting effective channel status information in wireless communication system supporting multiple carriers

A method and apparatus for transmitting effective channel status information (CSI) in a wireless communication system supporting multiple carriers are disclosed. The method for indicating CSI transmission in a wireless communication system supporting multiple carriers includes transmitting downlink control information (DCI) including a channel quality information (CQI) request field to a user equipment (UE) over a physical downlink control channel (PDCCH), and receiving CSI reporting of a single downlink carrier or multiple downlink carriers from the UE over a physical uplink shared channel (PUSCH) without receiving uplink data. If the CSI for the single downlink carrier is reported, the number (NPRB) of resource blocks (RBs) established for the CSI reporting is identical to or less than X (NPRBX), and if the CSI for the multiple downlink carriers is reported, NPRB is identical to or less than M (where M>X).

Method and apparatus for efficient feedback in a wireless communication system supporting multiple antennas

A method and apparatus for performing effective feedback in a wireless communication system supporting multiple antennas. A method for transmitting CSI of downlink transmission via uplink in a wireless communication system includes transmitting a joint-coded rank indicator (RI) and a first wideband (WB) precoding matrix indicator (PMI) at a first subframe, and transmitting a wideband channel quality indicator (WB CQI) and a second WB PMI at a second subframe. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. If the RI is Rank-1 or Rank-2, the first PMI indicates one of subsets each having 8 indexes from among 16 indexes of the first PMI of a precoding codebook.

Method and apparatus for transmitting control information in a wireless communication system

The present invention relates to a wireless communication system. The present invention relates to a method for transmitting ACK/NACK in a wireless communication system in which carrier aggregation is set, and an apparatus therefor. Specifically, the present invention relates to an ACK/NACK transmission method and an apparatus therefor, the method comprising the steps of: receiving information on a plurality of physical uplink control channel (PUCCH) resources via upper layer signaling; receiving a transmit power control (TPC) field on a secondary carrier through a physical downlink control channel (PDCCH); receiving data indicated by the PDCCH; and transmitting ACK/NACK for the data, wherein the ACK/NACK is transmitted using a PUCCH resource which is indicated by the value of the TPC field among the plurality of PUCCH resources.

Method and apparatus for transceiving control information for uplink multi-antenna transmission

The present description relates to a wireless communication system, and more particularly, to a method and apparatus for transceiving control information for uplink multi-antenna transmission. A method for transmitting control information for uplink multi-antenna transmission according to one embodiment of the present invention comprises the following steps: attaching a CRC parity bit to a PDCCH payload sequence containing uplink transmission resource allocation information; scrambling the CRC parity bit attached to the payload sequence to a bit sequence which indicates control information for uplink multi-antenna transmission; and transmitting the entirety of the sequence to which the scrambled CRC parity bit is attached to the payload sequence.

Method and apparatus for performing effective feedback in wireless communication system supporting multiple antennas

A method for transmitting channel status information (CSI) of downlink multi-carrier transmission includes generating the CSI including at least one of a rank indicator (RI), a first precoding matrix index (PMI), a second PMI and a channel quality indicator (CQI) for one or more downlink carriers, the CQI being calculated based on precoding information determined by a combination of the first and second PMIs, determining, when two or more CSIs collide with one another in one uplink subframe of one uplink carrier, a CSI to be transmitted on the basis of priority, and transmitting the determined CSI over a uplink channel. If a CSI including an RI or a wideband first PMI collides with a CSI including a wideband CQI or a subband CQI, the CSI including a wideband CQI or a subband CQI has low priority and is dropped.

Method and apparatus for efficient feedback in a wireless communication system supporting multiple antenna

A method and apparatus for transmitting effective channel status information (CSI) in a wireless communication system supporting multiple carriers are disclosed. A method for transmitting CSI of downlink (DL) transmission via uplink in a wireless communication system includes transmitting a rank indicator (RI) at a first subframe, and transmitting a first precoding matrix indicator (PMI), a second PMI, and a wideband (WB) channel quality indicator (CQI) at a second subframe. user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. A subsampled codebook for each precoding codebook of ranks from Rank-1 to Rank-4 is applied to the first PMI and the second PMI, and a sum of the first PMI and the second PMI for each of Rank-1 to Rank-4 is comprised of 4 bits.

Method and device for transmitting control information in a wireless communication system

The present invention relates to a wireless communication system. In more detail, in relation to a method for a terminal to transmit ACK/NACK in a wireless communication system, an ACK/NACK transmission method includes: receiving at least one Physical Downlink Shared Channel (PDSCH); transmitting at least one ACK/NACK corresponding to the at least one PDSCH through a plurality of Physical Uplink Control Channel (PUCCH) formats; and, when the at least one ACK/NACK is transmitted using a first PUCCH format, transmitting at least one ACK/NACK in an antenna port transmission mode set for a second PUCCH format.

METHOD FOR CONTROLLING UPLINK TRANSMISSION POWER FOR TRANSMITTING A PLURALITY OF CODE WORDS IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS A PLURALITY OF ANTENNAS, AND APPARATUS FOR PERFORMING THE METHOD

The present invention relates to a terminal which controls uplink transmission power for transmitting a plurality of code words in a wireless communication system that supports a plurality of antennas, and a method in which the terminal performs the control. In a terminal which controls uplink transmission power for transmitting a plurality of code words in a wireless communication system that supports a plurality of antennas, a receiver receives, from a base station, an indicator that concerns the determination of the transmission power for each code word of the plurality of code words. A processor determines uplink transmission power for transmitting the plurality of code words on the basis of the indication value of the indicator. If the indication value is zero, the processor allocates the same uplink transmission power to each of the plurality of code words. 1. A method of controlling an uplink transmission power for transmitting a plurality of codewords by a user equipment in a wireless communication system supportive of a plurality of antennas , the method comprising:receiving an indicator regarding transmission power determination per codeword for the plurality of the codewords from an eNode B; anddetermining the uplink transmission power for transmitting the plurality of the codewords based on an indication value of the indicator.2. The method of claim 1 , wherein if the indicator value is 0 claim 1 , a same uplink transmission power is assigned to each of the plurality of the codewords.3. The method of claim 1 , wherein if the indication value is 1.25 claim 1 , the uplink transmission power is assigned to each of the plurality of the codewords based on a size of transmission information.4. The method of claim 2 , further comprising:assigning the same uplink transmission power to each of the plurality of the antennas corresponding to the plurality of the codewords, respectively.5. The method of claim 1 , further comprising:controlling a total uplink ...

METHOD AND APPARATUS FOR TRANSCEIVING CONTROL INFORMATION FOR UPLINK MULTI-ANTENNA TRANSMISSION

The present description relates to a wireless communication system, and more particularly, to a method and apparatus for transceiving control information for uplink multi-antenna transmission. A method for transmitting control information for uplink multi-antenna transmission according to one embodiment of the present invention comprises the following steps: attaching a CRC parity bit to a PDCCH payload sequence containing uplink transmission resource allocation information; scrambling the CRC parity bit attached to the payload sequence to a bit sequence which indicates control information for uplink multi-antenna transmission; and transmitting the entirety of the sequence to which the scrambled CRC parity bit is attached to the payload sequence. 1. A method for transmitting control information for uplink multi-antenna transmission , the method comprising:attaching cyclic redundancy check (CRC) parity bits to a physical downlink control channel (PDCCH) payload sequence containing uplink transmission resource allocation information;scrambling the CRC parity bits attached to the PDCCH payload sequence with a bit sequence which indicates control information for uplink multi-antenna transmission; andtransmitting an entire sequence in which the scrambled CRC parity bits is attached to the PDCCH payload sequence.2. The method according to claim 1 , wherein the control information for uplink multi-antenna transmission is control information that defines antenna-to-power amplifier mapping claim 1 ,wherein, when a bit sequence that indicates the control information which defines antenna-to-power amplifier mapping has a first value, the bit sequence indicates mapping of a power amplifier having highest power to antenna port 0 or antenna port group 0 and, when the bit sequence has a second value, the bit sequence indicates mapping of the power amplifier having highest power to antenna port 1 or antenna port group 1.3. The method according to claim 2 , wherein whether mapping ...

METHOD AND DEVICE FOR DETERMINING PRECODING INFORMATION FOR UPLINK MULTI-ANTENNA TRANSMISSION

The present invention relates to a method for allowing a terminal to transmit uplink data through an HARQ method in a wireless communication system that supports MIMO transmission comprises the steps of: transmitting a plurality of data blocks to a base station on the basis of an uplink grant; receiving, from the base station, control information which indicates a NACK for some data blocks among the plurality of data blocks; selecting, according to a predetermined rule shared in the terminal and the base station, a precoding matrix which is to be applied to the data blocks for which the NACK is indicated; and retransmitting the data blocks, for which the NACK is indicated, to the base station by applying the selected precoding matrix. 1. A method for transmitting uplink (UL) data using a hybrid automatic repeat request (HARQ) scheme by a user equipment (UE) in a wireless communication system supporting Multiple Input Multiple Output (MIMO) transmission , the method comprising:transmitting a plurality of data blocks to a base station (BS) on the basis of an uplink (UL) grant;receiving control information indicating a negative acknowledgement (NACK) of some data block from among the plurality of data blocks from the base station (BS);selecting a precoding matrix to be applied to a data block indicated by the NACK according to a predetermined rule shared between the user equipment (UE) and the base station (BS); andretransmitting the NACK-indicated data block to the base station (BS) using the selected precoding matrix.2. The method according to claim 1 , wherein:the predetermined rule is configured to determine a codebook index on the basis of an index of a redundancy version (RV) of the retransmitted data block, anda precoding matrix corresponding to the determined codebook index is selected from among a codebook corresponding to a rank of the retransmission.3. The method according to claim 2 , wherein the predetermined rule satisfies “i=a×r×b” claim 2 , where ‘i’ is ...

Method and user equipment for transmitting uplink control information

A user equipment (UE) transmits uplink control information (UCI) of 3 bits or more to a base station (BS) after modulating the UCI into 1-bit or 2-bit sub-UCI units. Here, the UE maps each 1-bit or 2-bit sub-UCI unit to one of a plurality of corner constellation points regardless of modulation order of data which is multiplexed with the UCI. The corner constellation points are points having a maximum Euclidean distance from among a plurality of constellation points corresponding to the modulation order.

METHOD AND APPARATUS FOR MULTIPLEXING CONTROL INFORMATION AND DATA, AND FOR TRANSMITTING THE MULTIPLEXED CONTROL INFORMATION AND DATA IN A MIMO WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting uplink control information in a wireless communication system. A method for multiplexing uplink control information and uplink data and for transmitting the multiplexed uplink control information and uplink data according to one embodiment of the present invention comprises the following steps: encoding a first transmission block and a second transmission block to generate a first codeword and a second codeword; mapping the first codeword and the second codeword to one or more layers, respectively; and transmitting, via one or more antenna ports, each layer to which the first codeword and the second codeword are mapped, wherein the uplink control information is multiplexed only to either the first transmission block or to the second transmission block.

METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNAS

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for efficient feedback in a wireless communication system that supports multiple antennas. According to one embodiment of the present invention, a method for transmitting channel status information, CSI, for a downlink transmission through uplink comprises: generating a rank indicator (RI), a first precoding matrix indicator (PMI), a second PMI anc channel quality indicator (CQI) as the CSI for the downlink transmission; and transmitting at least one of the RI, the first PMI, the second PMI and the CQI according to a predetermined order, wherein, when the RI or the first PMI is dropped, the CSI following the dropped CSI is generated based on a RI or a first PMI transmitted previously, wherein a precoding matrix used for the downlink transmission is determined based on a combination of the first PMI and the second PMI. 1. A method for transmitting channel status information , CSI , for a downlink transmission through uplink , the method comprising:generating a rank indicator (RI), a first precoding matrix indicator (PMI), a second PMI and channel quality indicator (CQI) as the CSI for the downlink transmission; andtransmitting at least one of the RI, the first PMI, the second PMI and the CQI according to a predetermined order,wherein, when the RI or the first PMI is dropped, the CSI following the dropped CSI is generated based on a RI or a first PMI transmitted previously,wherein a precoding matrix used for the downlink transmission is determined based on a combination of the first PMI and the second PMI.2. The method according to claim 1 ,wherein the predetermined order is set as:when a precoding type indication (PTI) has a first value, an order of reporting the RI and the PTI, reporting a wideband first PMI, reporting a wideband second PMI and a wideband CQI;when the PTI has a second value, an order of reporting the RI and the PTI, reporting the ...

METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING UPLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE CARRIERS

The present invention relates to a wireless communication system, and more specifically, to a method and a device for transmitting and receiving uplink control information in a wireless communication system that supports multiple carriers. According to one embodiment of the present invention, a method for allowing a terminal to transmit uplink control information (UCI) in a wireless communication system that supports multiple carriers comprises the steps of: receiving one or more uplink grants from a base station; obtaining an indicator which indicates an uplink carrier on which said UCI is transmitted from each of the one or more uplink grants; and transmitting said UCI through a physical uplink shared channel (PUSCH) on the uplink carrier indicated by said indicator, if the one or more uplink grants schedule uplink data transmission on the uplink carrier indicated by said indicator. 1. A method for a user equipment to transmit Uplink Control Information (UCI) in a wireless communication system that supports multiple carriers , the method comprising:receiving at least one uplink grant from a base station;acquiring an indicator which indicates an uplink carrier in which the UCI is transmitted from each of the at least one uplink grant; andtransmitting the UCI through a Physical Uplink Shared Channel (PUSCH) in the uplink carrier indicated by the indicator when the at least one uplink grant schedules uplink data transmission in the uplink carrier indicated by the indicator.2. The method according to claim 1 , wherein claim 1 , when data is present in a transmission buffer of the user equipment claim 1 , the UCI is multiplexed and transmitted with the uplink data through the PUSCH and claim 1 , when no data is present in the transmission buffer of the user equipment claim 1 , the UCI is transmitted without data through the PUSCH.3. The method according to claim 1 , wherein the UCI is transmitted through a Physical Uplink Control Channel (PUCCH) of a specific uplink ...

Method and apparatus for performing channel measurement in a distributed multi-node system

The present description relates to a method for receiving a reference signal (RS) in a distributed multi-node system, comprising: a step of receiving, from a base station, channel state information reference signal (CSI-RS) configuration information which indicates the configuration of the channel state information reference signal the power of which is nonzero; and a step of receiving a channel state information reference signal for at least one node in a cell on the basis of the channel state information reference signal configuration information, wherein said channel state information reference signal with non-zero power has at least one configuration, and is received via at least one subframe.

Method for transmitting control information in wireless communication system and apparatus therefor

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes the steps of configuring a number of resource elements for transmitting the information data; dividing the information data to first information data and second information data if a bit size O of the information data is equal to or larger than a predetermined number; applying RM coding on each of the first information data and the second information data; concatenating the coded first information data and the coded second information data, and transmitting the concatenated data by using the predetermined number of resource elements, wherein a minimum value Q′ min for the number of resource elements is defined by a sum of a minimum value Q′ min — 1 for the number of resource elements corresponding to the first information data and a minimum value Q′ min — 2 for the number of resource elements corresponding to the second information data.

Method and apparatus for transmitting control information in a wireless communication system

The present invention relates to a wireless communication system, and more specifically, to an ACK/NACK (Acknowledgement/Negative ACK) transmission method in a wireless communication system and an apparatus therefor. The ACK/NACK transmission method preformed by user equipment in a wireless communication system comprises: receiving a PDCCH (Physical Downlink Control Channel); receiving a PDSCH (Physical Downlink Shared Channel) indicated by the PDCCH; and transmitting an ACK/NACK for the PDSCH. According to the ACK/NACK transmission method and apparatus of the invention.

Method and Base Station for Transmitting Downlink Signal and Method and Equipment for Receiving Downlink Signal

A base station of the present invention configures resources in which a downlink signal is to be transmitted with zero power using resource sets defined for a specific number of antenna ports, regardless of the number of antenna ports actually configured in the base station, and transmits resource information indicating the configured resources to a user equipment. The user equipment of the present invention receives a downlink transmission from the base station, assuming that transmission power of resources corresponding to a resource set indicated by the resource information is zero. 112-. (canceled)13. A method for transmitting a downlink signal from a Base Station (BS) in a wireless communication system in which resource sets for a reference signal for channel measurement are defined according to a number of antenna ports , the method comprising:transmitting resource information indicating a zero transmission power region configured in a resource region including a plurality of resources to a User Equipment (UE); andperforming downlink transmission to the UE in the resource region based on the resource information,wherein the zero transmission power region is configured using at least one resource set of a plurality of resource sets for a specific number of antenna ports regardless of a number of antenna ports configured for transmission of the reference signal for channel measurement.14. The method according to claim 13 , wherein the resource sets defined in the wireless communication system include at least first resource sets for N1 antenna ports and second resource sets for N2 antenna ports claim 13 , where N2>N1 claim 13 , andwherein the plurality of resource sets for the specific number of antenna ports is the second resource sets.15. The method according to claim 14 , wherein the resource information includes information indicating the at least one resource set within the second resource sets.16. The method according to claim 14 , wherein the resource ...

Method and apparatus for efficient feedback in a wireless communication system supporting multiple antenna

A method for transmitting channel status information (CSI) via uplink in a wireless communication system includes transmitting a first precoding matrix indicator (PMI) and a second PMI at a subframe. A subsampled codebook for each of a precoding codebook for Rank-1 and a precoding codebook for Rank-2 is determined based on at least the first PMI or the second PMI. In case of the Rank-1 or the Rank-2, a number of elements for the first PMI is 8.

Method and apparatus for efficient feedback in a wireless communication system supporting multiple antennas

A method and apparatus for performing effective feedback in a wireless communication system supporting multiple antennas. A method for transmitting CSI of downlink transmission via uplink in a wireless communication system includes transmitting a joint-coded rank indicator (RI) and a first wideband (WB) precoding matrix indicator (PMI) at a first subframe, and transmitting a wideband channel quality indicator (WB CQI) and a second WB PMI at a second subframe. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. If the RI is Rank-1 or Rank-2, the first PMI indicates one of subsets each having 8 indexes from among 16 indexes of the first PMI of a precoding codebook.

Method and apparatus for performing effective feedback in wireless communication system supporting multiple antennas

A method for transmitting channel status information (CSI) of downlink multi-carrier transmission includes generating the CSI including at least one of a rank indicator (RI), a first precoding matrix index (PMI), a second PMI and a channel quality indicator (CQI) for one or more downlink carriers, the CQI being calculated based on precoding information determined by a combination of the first and second PMIs, determining, when two or more CSIs collide with one another in one uplink subframe of one uplink carrier, a CSI to be transmitted on the basis of priority, and transmitting the determined CSI over a uplink channel. If a CSI including an RI or a wideband first PMI collides with a CSI including a wideband CQI or a subband CQI, the CSI including a wideband CQI or a subband CQI has low priority and is dropped.

Method for transmitting effective channel status information in wireless communication system supporting multiple carriers

A method and apparatus for transmitting effective channel status information (CSI) in a wireless communication system supporting multiple carriers are disclosed. The method for indicating CSI transmission in a wireless communication system supporting multiple carriers includes transmitting downlink control information (DCI) including a channel quality information (CQI) request field to a UE over a physical downlink control channel (PDCCH), and receiving CSI reporting of a single downlink carrier or multiple downlink carriers from the UE over a physical uplink shared channel (PUSCH) without receiving uplink data. If the CSI for the single downlink carrier is reported, the number (NPRB) of resource blocks (RBs) established for the CSI reporting is identical to or less than X (NPRB≦X), and if the CSI for the multiple downlink carriers is reported, NPRB is identical to or less than M (where M>X).

METHOD AND APPARATUS FOR TRANSMITTING UPLINK REFERENCE SIGNAL IN A MULTI-ANTENNA WIRELESS COMMUNICATION SYSTEM

A method and apparatus for transmitting a Reference Signal (RS) during retransmission at a User Equipment (UE) in a multi-antenna wireless communication system are disclosed. The RS transmission method includes receiving an uplink grant from a Base Station (BS), initially transmitting data and an RS corresponding to each layer based on the uplink grant, receiving ACKnowledgment/Negative ACKnowledgment (ACK/NACK) information for the initially transmitted data, and retransmitting the RS corresponding to each layer and the data according to the ACK/NACK information. The retransmission includes initializing a cyclic shift value for the RS corresponding to each layer according to a cyclic shift field for RSs included in the uplink grant. 1. A method for transmitting a Reference Signal (RS) during retransmission at a User Equipment (UE) in a multi-antenna wireless communication system , the method comprising:receiving an uplink grant from a Base Station (BS);initially transmitting data and an RS corresponding to each layer based on the uplink grant; andreceiving ACKnowledgment/Negative ACKnowledgment (ACK/NACK) information for the initially transmitted data and retransmitting the RS corresponding to each layer and the data according to the ACK/NACK information,wherein the retransmission comprises initializing a cyclic shift value for the RS corresponding to each layer according to a cyclic shift field for RSs included in the uplink grant.2. The method according to claim 1 , wherein the retransmission comprises initializing an Orthogonal Cover Code (OCC) value for the RS corresponding to each layer according to the cyclic shift field for RSs included in the uplink grant.3. The method according to claim 1 , wherein cyclic shift values allocated to RSs corresponding to layers have a maximum spacing.4. The method according to claim 1 , wherein the cyclic shift value ranges from 0 to 11 and a maximum spacing between cyclic shift values is 6.5. The method according to claim 1 , ...

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

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes the steps of configuring a number of resource elements for transmitting the information data; generating coded information data having a specific bit size by applying RM coding to the information data; performing rate matching to the coded information data so that the rate-matched information data can correspond to the configured resource elements; and transmitting the rate-matched information data by using the configured number of resource elements, wherein a minimum value Q′for the number of resource elements is defined based upon a bit size (O) of the information data and based upon a bit size per symbol (Q) in accordance with a modulation order. 1. In a method for transmitting information data by using a Reed-Muller (RM) coding scheme in a wireless communication system , a method for transmitting information data comprising:configuring a number of resource elements for transmitting the information data;generating coded information data having a specific bit size by applying RM coding to the information data;performing rate matching to the coded information data so that the rate-matched information data can correspond to the configured resource elements; andtransmitting the rate-matched information data by using the configured number of resource elements,{'sub': min', 'm, 'wherein a minimum value Q′for the number of resource elements is defined based upon a bit size (O) of the information data and based upon a bit size per symbol (Q) in accordance with a modulation order.'}2. The method of claim 1 , wherein the information data correspond to Uplink Control Information (UCI) claim 1 , and wherein the Uplink Control Information is transmitted through an Physical Uplink Shared Channel (PUSCH).4. The method of claim 1 , wherein the bit size (O) of the information data is within a range of 3 bits to 11 bits.5. The method ...

Method and apparatus for transmitting control information in wireless communication system

The present invention relates to a wireless communication system. The present invention relates to a method for transmitting ACK/NACK in a wireless communication system in which carrier aggregation is set, and an apparatus therefor. Specifically, the present invention relates to an ACK/NACK transmission method and an apparatus therefor, the method comprising the steps of: receiving information on a plurality of physical uplink control channel (PUCCH) resources via upper layer signaling; receiving a transmit power control (TPC) field on a secondary carrier through a physical downlink control channel (PDCCH); receiving data indicated by the PDCCH; and transmitting ACK/NACK for the data, wherein the ACK/NACK is transmitted using a PUCCH resource which is indicated by the value of the TPC field among the plurality of PUCCH resources.

Apparatus and method for transmitting/receiving signals by using a preset frame structure in a wireless communication system

The present invention relates to an apparatus and a method for transmitting/receiving signals by using a preset frame structure in a wireless communication system. As there are difficulties ensuring the link capacity and quality for a high speed moving object with the existing frame structure and the antenna arrangement and communication system based on the existing scheme, a new frame structure needs to be proposed. According to one example of those newly proposed frame structures, one frame is composed of 8 subframes, each of the 8 subframes being composed of orthogonal frequency division multiple access (OFDMA) symbols in a range of 11 to 14, and the cyclic prefix (CP) length of the frame is ⅛ or less of an effective symbol length (e.g., ⅛, 1/16, 1/31, 1/64).

METHOD AND APPARATUS FOR TRANSMITTING UPLINK REFERENCE SIGNAL IN A MULTI-ANTENNA WIRELESS COMMUNICATION SYSTEM

A method and apparatus for transmitting a Reference Signal (RS) during retransmission at a User Equipment (UE) in a multi-antenna wireless communication system are disclosed. The RS transmission method includes receiving an uplink grant from a Base Station (BS), initially transmitting data and an RS corresponding to each layer based on the uplink grant, receiving ACKnowledgment/Negative ACKnowledgment (ACK/NACK) information for the initially transmitted data, and retransmitting the RS corresponding to each layer and the data according to the ACK/NACK information. The retransmission includes initializing a cyclic shift value for the RS corresponding to each layer according to a cyclic shift field for RSs included in the uplink grant. 1. A method for transmitting signals at a User Equipment (UE) in a multi-antenna wireless communication system , the method comprising:receiving, by the UE from a Base Station (BS), a first uplink grant indicating a number of transport blocks and a number of layers for the transport blocks;transmitting, by the UE to the BS, the transport blocks and Reference Signals (RSs) based on the first uplink grant;receiving, by the UE from the BS, Negative ACKnowledgment (NACK) information for at least one of the transport blocks for retransmission;if a second uplink grant for retransmission is not received from the BS and if a number of the at least one of the transport blocks for retransmission is not equal to the number of transport blocks indicated by the first uplink grant, configuring, by the UE, resources of a RS for the at least one of the transport blocks for retransmission based on a cyclic shift field included in the first uplink grant and a number of layers of the at least one of the transport blocks for retransmission; andretransmitting, by the UE to the BS, the at least one of the transport blocks for retransmission and the configured RS for the at least one of the transport blocks for retransmission based on the number of layers of ...

METHOD AND APPARATUS FOR TRANSMITTING CHANNEL QUALITY CONTROL INFORMATION USING PUCCH FORMAT 3 IN A WIRELESS ACCESS SYSTEM

A method of coding and transmitting channel quality control information through a physical uplink control channel (PUCCH) is disclosed. The method of transmitting channel state control information (CQI and/or PMI) in a wireless access system includes performing channel coding with respect to the channel state control information according to a payload size of the channel state control information, performing rate matching with respect to the channel state control information coded through channel coding according to physical uplink control channel (PUCCH) format 3, and transmitting the channel state control information using the PUCCH format 3. 1. A method of transmitting channel state control information in a wireless access system , the method comprising:performing channel coding with respect to the channel state control information according to a payload size of the channel state control information;performing rate matching with respect to the channel state control information coded through channel coding according to physical uplink control channel (PUCCH) format 3; andtransmitting the channel state control information using the PUCCH format 3.2. The method according to claim 1 , wherein claim 1 , if the payload size of the channel state control information is less than or equal to 11 bits claim 1 , a user equipment (UE) performs channel coding with respect to the channel state control information using a (20 claim 1 , A) Reed Muller (RM) code or a (32 claim 1 , O) RM code.3. The method according to claim 2 , wherein the UE performs rate matching with 48 bits with respect to the channel state control information according to the PUCCH format 3.4. The method according to claim 2 , wherein the UE replicatively inputs the result of rate matching with 24 bits with respect to the channel state control information to two slots of the PUCCH format 3.5. The method according to claim 1 , wherein claim 1 , if the payload size of the channel state control information is ...

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

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is provided. The method includes configuring a number of resource elements for transmitting the information data; generating coded information data having a specific bit size by applying RM coding to the information data; performing rate matching to the coded information data so that the rate-matched information data can correspond to the configured resource elements; and transmitting the rate-matched information data by using the configured number of resource elements, where a minimum value Q′for the number of resource elements is defined based upon a bit size (O) of the information data and based upon a bit size per symbol (Q) in accordance with a modulation order. 2. The method of claim 1 , wherein:the information data correspond to Uplink Control Information (UCI); andthe signal is received through a Physical Uplink Shared Channel (PUSCH).3. The method of claim 1 , wherein the specific bit size is 32 bits.4. The method of claim 1 , wherein claim 1 , if the bit size (O) of the information data is larger than 11 bits claim 1 , the information data is divided into two information data groups.6. The receiving apparatus of claim 5 , wherein:the information data correspond to Uplink Control Information (UCI); andthe signal is received through a Physical Uplink Shared Channel (PUSCH).7. The receiving apparatus of claim 5 , wherein the specific bit size is 32 bits.8. The receiving apparatus of claim 5 , wherein claim 5 , if the bit size (O) of the information data is larger than 11 bits claim 5 , the information data is divided into two information data groups. This application is a continuation of application Ser. No. 13/163,600, filed on Jun. 17, 2011, currently pending, which pursuant to 35 U.S.C. §120, claims the benefit of U.S. Provisional Appln. Nos. 61/375,288, filed on Aug. 20, 2010, 61/376,164, filed on Aug. 23, 2010, 61/376,996, filed on Aug. 25, ...

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

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes configuring a number of resource elements for transmitting the information data; dividing the information data to first information data and second information data if a bit size O of the information data is equal to or larger than a predetermined number; applying RM coding on each of the first information data and the second information data; concatenating the coded first information data and the coded second information data, and transmitting the concatenated data by using the predetermined number of resource elements, wherein a minimum value Q′for the number of resource elements is defined by a sum of a minimum value Q′for the number of resource elements corresponding to the first information data and a minimum value Q′for the number of resource elements corresponding to the second information data. 2. The method of claim 1 , wherein the information data corresponds to Uplink Control Information (UCI) that is received through a Physical Uplink Shared Channel (PUSCH).3. The method of claim 1 , wherein the predetermined number corresponds to 12 bits.5. The receiving apparatus of claim 4 , wherein the information data corresponds to Uplink Control Information (UCI) that is received through a Physical Uplink Shared Channel (PUSCH).6. The receiving apparatus of claim 4 , wherein the predetermined number corresponds to 12 bits. This application is a continuation of U.S. application Ser. No. 13/163,607, filed Jun. 17, 2011, currently pending, which, pursuant to 35 U.S.C. §119, claims the benefit of earlier filing date and right of priority to Korean Patent Application No. 10-2011-0027553, filed on Mar. 28, 2011 and also claims the benefit of U.S. Provisional Application Ser. Nos. 61/414,377, filed on Nov. 16, 2010, 61/413,934, filed on Nov. 15, 2010, 61/412,792, filed on Nov. 12, 2010, 61/409,960, filed on Nov. 4, 2010, 61/ ...

METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNAS

A method and apparatus for performing effective feedback in a wireless communication system supporting multiple antennas. A method for transmitting CSI of downlink transmission via uplink in a wireless communication system includes transmitting a joint-coded rank indicator (RI) and a first wideband (WB) precoding matrix indicator (PMI) at a first subframe, and transmitting a wideband channel quality indicator (WB CQI) and a second WB PMI at a second subframe. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. If the RI is Rank-1 or Rank-2, the first PMI indicates one of subsets each having 8 indexes from among 16 indexes of the first PMI of a precoding codebook. 1. A method for transmitting channel status information (CSI) via uplink in a wireless communication system , the method comprising:transmitting a rank indicator (RI) and a first wideband (WB) precoding matrix indicator (PMI) at a first subframe,wherein:if the RI is Rank-1 or Rank-2, a number of elements for the first WB PMI is 8.2. The method according to claim 1 , wherein:if the RI is Rank-3, Rank-4, Rank-5, Rank-6 or Rank-7, a number of elements for the first WB PMI is 2.3. The method according to claim 1 , wherein:if the RI is Rank-8, a number of elements for the first WB PMI is 1.4. The method according to claim 1 , wherein:if the RI is Rank-1 or Rank-2, the first WB PMI indicates one index of a subset having 8 indexes from among 16 indexes of the first WB PMI of a precoding codebook.5. The method according to claim 4 , further comprising:transmitting a wideband channel quality indicator (WB CQI) and a second WB PMI at a second subframe,wherein a user equipment (UE) preferred precoding matrix is indicated by a combination of the first WB PMI and the second WB PMI.6. The method according to claim 5 , wherein the second WB PMI indicates an index among 16 indexes of the second WB PMI in the precoding codebook.8. The method according to claim ...

METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNA

A method and apparatus for transmitting effective channel status information (CSI) in a wireless communication system supporting multiple carriers are disclosed. A method for transmitting CSI of DL transmission via uplink in a wireless communication system includes transmitting a rank indicator (RI) at a first subframe, and transmitting a first precoding matrix indicator (PMI), a second PMI, and a wideband (WB) channel quality indicator (CQI) at a second subframe. UE preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. A subsampled codebook for each precoding codebook of ranks from Rank-1 to Rank-4 is applied to the first PMI and the second PMI, and a sum of the first PMI and the second PMI for each of Rank-1 to Rank-4 is comprised of 4 bits. 1. A method for transmitting channel status information (CSI) via uplink in a wireless communication system , the method comprising:transmitting a first precoding matrix indicator (PMI) and a second PMI at a subframe,wherein:a subsampled codebook for each of a precoding codebook for Rank-1 and a precoding codebook for Rank-2 is determined based on at least the first PMI or the second PMI, andin case of the Rank-1 or the Rank-2, a number of elements for the first PMI is 8.2. The method according to claim 1 , wherein:in case of the Rank-1 or the Rank-2, the first PMI indicates one index of a subset having 8 indexes from among 16 indexes of the first PMI of the precoding codebook for Rank-1 or the precoding codebook for Rank-2.3. The method according to claim 2 , wherein:in case of the Rank-1 or the Rank-2, a number of elements for the second PMI is 2.4. The method according to claim 3 , wherein:in case of the Rank-1 or the Rank-2, the second PMI indicates one index of a subset having 2 indexes from among 16 indexes of the second PMI of the precoding codebook for Rank-1 or the precoding codebook for Rank-2.5. The method according to claim 4 , wherein:in case of the Rank-1 or the Rank-2, a ...

METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNA

A method for transmitting channel status information (CSI) via uplink in a wireless communication system includes transmitting a first precoding matrix indicator (PMI) and a second PMI at a subframe. A subsampled codebook for each of a precoding codebook for Rank-1 and a precoding codebook for Rank-2 is determined based on at least the first PMI or the second PMI. In case of the Rank-1 or the Rank-2, a number of elements for the first PMI is 8. 1. A method for transmitting channel status information (CSI) via a physical uplink control channel (PUCCH) by a user equipment (UE) in a wireless communication system , the method comprising:transmitting a first PUCCH report including a rank indicator (RI); andtransmitting a second PUCCH report including a channel quality indicator (CQI), a first precoding matrix indicator (PMI) and a second PMI,wherein when the RI corresponds to one of Rank-1 to Rank-4, a sub set of a codebook corresponding to the RI is available for selecting the first PMI and the second PMI, and a sum of the first PMI and the second PMI is comprised of 4 bits, andwherein when the RI corresponds to one of Rank-5 to Rank-7, a full set of a codebook corresponding to the RI is available for selecting the first PMI and the second PMI, and a sum of the first PMI and the second PMI is comprised of 2 bits.2. The method according to claim 1 , wherein a combination of the first PMI and the second PMI indicates a single precoding matrix.3. The method according to claim 1 , wherein when the RI is one of the Rank-1 and the Rank-2 claim 1 , the first PMI is comprised of 3 bits claim 1 , and the second PMI is comprised of 1 bit.6. The method according to claim 1 , wherein when the RI is one of the Rank-3 and the Rank-4 claim 1 , the first PMI is comprised of 1 bit claim 1 , and the second PMI is comprised of 3 bits.9. The method according to claim 1 , wherein the RI claim 1 , the first PMI claim 1 , the second PMI claim 1 , and the CQI are contained in channel status ...

Method and device for transmitting control information in a wireless communication system

The present invention relates to a wireless communication system. In more detail, in relation to a method for a terminal to transmit ACK/NACK in a wireless communication system, an ACK/NACK transmission method includes: receiving at least one Physical Downlink Shared Channel (PDSCH); transmitting at least one ACK/NACK corresponding to the at least one PDSCH through a plurality of Physical Uplink Control Channel (PUCCH) formats; and, when the at least one ACK/NACK is transmitted using a first PUCCH format, transmitting at least one ACK/NACK in an antenna port transmission mode set for a second PUCCH format.

METHOD FOR PERFORMING CHANNEL INTERLEAVING IN A MULTI-ANTENNA WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME

A method of transmitting a signal to a base station at a user equipment (UE) in a multi-antenna wireless communication system, can include generating interleaver input vector sequences, wherein the interleaver input vector sequences comprise vectors having a predetermined bit size, mapping the interleaver input vector sequences to an interleaver matrix, generating an output bit sequence by reading the interleaver matrix column by column, and transmitting the output bit sequence to the base station, wherein the predetermined bit size is defined by a product of a modulation order Qand the number Nof transmission layers. 1. A method of transmitting a signal to a base station at a user equipment (UE) in a multi-antenna wireless communication system , the method comprising:generating interleaver input vector sequences, wherein the interleaver input vector sequences comprise vectors having a predetermined bit size;mapping the interleaver input vector sequences to an interleaver matrix;generating an output bit sequence by reading the interleaver matrix column by column; andtransmitting the output bit sequence to the base station,{'sup': 'p', 'sub': m', 'L, 'wherein the predetermined bit size is defined by a product of a modulation order Qand the number Nof transmission layers.'}2. The method according to claim 1 , wherein the interleaver input vector sequences comprises a first interleaver input vector sequence for channel quality indicator (CQI) information and data claim 1 , a second interleaver input vector sequence for rank indicator (RI) information and a third interleaver input vector sequence for acknowledgement (ACK)/negative ACK (HACK) information.3. The method according to claim 2 , wherein the first interleaver input vector sequence claim 2 , g claim 2 , g claim 2 , g claim 2 , g claim 2 , . . . claim 2 , g(H′=H/(Q·N) and H=G+Q) is generated by{'sub': 0', '1', '2', '3', 'Q', {'sub2': 'CQI'}, '-1', 'CQI', '0', '1', '2', '3', 'G-1, 'concatenating the CQI ...

METHOD AND APPARATUS FOR TRANSMITTING CHANNEL QUALITY CONTROL INFORMATION USING PUCCH FORMAT 3 IN A WIRELESS ACCESS SYSTEM

A method of transmitting uplink control information (UCI) in a wireless access system supporting carrier aggregation. A user equipment (UE) receives two or more physical downlink shared channels (PDSCHs) via two or more downlink component carriers, respectively. The UE performs channel coding with respect to the UCI according to a payload size of the UCI including acknowledgement information and channel quality information (CQI) for each of the two or more downlink carriers. The UE performs rate matching with respect to the channel coded UCI for a physical uplink control channel (PUCCH) format 3. The UE transmits the rate matched UCI using the PUCCH format 3. 1. A method of transmitting uplink control information (UCI) in a wireless access system supporting carrier aggregation , the method performed by a user equipment (UE) and comprising:receiving two or more physical downlink shared channels (PDSCHs) via two or more downlink component carriers, respectively;performing channel coding with respect to the UCI according to a payload size of the UCI including acknowledgement information and channel quality information (CQI) for each of the two or more downlink carriers;performing rate matching with respect to the channel coded UCI for a physical uplink control channel (PUCCH) format 3; andtransmitting the rate matched UCI using the PUCCH format 3,wherein the channel coding is performed by using a (32, O) code when the payload size of the UCI is less than or equal to 11 bits,wherein the channel coding is performed by using two (32, O) codes when the payload size of the UCI is greater than or equal to 12 bits, andwherein ‘O’ is the payload size of the UCI.2. The method according to claim 1 , wherein the UE performs the rate matching with 48 bits with respect to the channel coded UCI for the PUCCH format 3 claim 1 , when the payload size of the UCI is less than or equal to 11 bits.3. The method according to claim 1 , wherein the UE inputs the result of rate matching with ...

METHOD AND APPARATUS FOR PERFORMING EFFICIENT FEEDBACK IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNA

A method for transmitting channel status information (CSI) of downlink transmission via uplink in a wireless communication system includes transmitting a rank indicator (RI) and a precoder type indicator (PTI) at a first subframe, transmitting at a second subframe a first precoding matrix indicator (PMI) when the PTI has a first value and transmitting a second PMI and a wideband channel quality indicator (WB CQI) when the PTI has a second value, and transmitting at a third subframe a second PMI and a WB CQI when the PTI has a first value and transmitting a subband (SB) CQI and a second PMI when the PTI has a second value. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. Subsampled codebooks of precoding codebooks of individual Rank-2, Rank-3 and Rank-4 are applied to the second PMI. 1. A method for periodically transmitting channel status information (CSI) by a user equipment (UE) in a wireless communication system , the method comprising:transmitting, by the UE to a base station (BS), a first type report;if an indicator included in the first type report is 0, transmitting in an order of a second type report and a third type report after transmitting the first type report; andif the indicator included in the first type report is 1, transmitting in an order of the third type report and a fourth type report after transmitting the first type report;wherein:the first type report includes a rank indicator (RI) and the indicator,the second type report includes a first precoding matrix indicator (PMI) for a wideband,the third type report includes a second PMI for the wideband and a channel quality indicator (CQI) for the wideband,the fourth type report includes the second PMI for a subband and the CQI for the subband,the second PMI indicates a codebook index in a subsampled codebook, andthe subsampled codebook includes four codebook indexes for each of Rank-2, Rank-3 and Rank-4.2. The method according to ...

METHOD AND BASE STATION FOR TRANSMITTING DOWNLINK SIGNAL AND METHOD AND EQUIPMENT FOR RECEIVING DOWNLINK SIGNAL

A base station of the present invention configures resources in which a downlink signal is to be transmitted with zero power using resource sets defined for a specific number of antenna ports, regardless of the number of antenna ports actually configured in the base station, and transmits resource information indicating the configured resources to a user equipment. The user equipment of the present invention receives a downlink transmission from the base station, assuming that transmission power of resources corresponding to a resource set indicated by the resource information is zero. 112-. (canceled)13. A method for transmitting , by a user equipment , channel state information , the method comprising:receiving, by the user equipment, zero power CSI-RS information indicating one or more zero power CSI-RS resources; andtransmitting, by the user equipment, the channel state information using interference measurement based on the zero power CSI-RS information,wherein the user equipment presumes that no downlink data is mapped to the one or more zero power CSI-RS resources,wherein the zero power CSI-RS information includes a bitmap having bits corresponding respectively to CSI-RS resources defined for a fixed number of antenna ports, regardless of a number of antenna ports configured for transmission of a CSI-RS, among a plurality of CSI-RS resources defined according to numbers of antenna ports,wherein the fixed number is greater than two,wherein each of the plurality of CSI-RS resources is configured with one or more subcarriers by two consecutive OFDM symbols in a resource block according to the numbers of antenna ports, and{'b': 5', '6', '9', '10', '12', '13', '0', '13, 'wherein the two consecutive OFDM symbols are OFDM symbols and , OFDM symbols and , or OFDM symbols and , among OFDM symbols to included in the resource block.'}14. The method of claim 13 , wherein the plurality of CSI-RS resources comprise:CSI-RS resources for two antenna ports, each of which ...

METHOD AND BASE STATION FOR TRANSMITTING DOWNLINK SIGNAL AND METHOD AND EQUIPMENT FOR RECEIVING DOWNLINK SIGNAL

A base station of the present invention configures resources in which a downlink signal is to be transmitted with zero power using resource sets defined for a specific number of antenna ports, regardless of the number of antenna ports actually configured in the base station, and transmits resource information indicating the configured resources to a user equipment. The user equipment of the present invention receives a downlink transmission from the base station, assuming that transmission power of resources corresponding to a resource set indicated by the resource information is zero. 112-. (canceled)13. A method for performing , by a user equipment , channel measurement , the method comprising:receiving, by the user equipment, zero power CSI-RS information indicating one or more zero power CSI-RS resources; andperforming, by the user equipment, the channel measurement for a cell using the one or more zero power CSI-RS resources based on the zero power CSI-RS information,wherein the user equipment presumes that no downlink data is mapped to the one or more zero power CSI-RS resources,wherein the zero power CSI-RS information includes a bitmap having bits corresponding respectively to CSI-RS resources defined for a fixed number of antenna ports, regardless of a number of antenna ports configured for transmission of a CSI-RS, among a plurality of CSI-RS resources defined according to numbers of antenna ports, andwherein the fixed number is greater than two.14. The method of claim 13 , wherein:each of the plurality of CSI-RS resources is configured with one or more subcarriers by two consecutive OFDM symbols in a resource block according to the numbers of antenna ports; andthe two consecutive OFDM symbols are OFDM symbols 5 and 6, OFDM symbols 9 and 10, or OFDM symbols 12 and 13, among OFDM symbols 0 to 13 included in the resource block.15. The method of claim 13 , wherein the plurality of CSI-RS resources comprise:CSI-RS resources for two antenna ports, each of which ...

METHOD AND APPARATUS FOR PERFORMING EFFECTIVE FEEDBACK IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNAS

A method for transmitting channel status information (CSI) of downlink multi-carrier transmission includes generating the CSI including at least one of a rank indicator (RI), a first precoding matrix index (PMI), a second PMI and a channel quality indicator (CQI) for one or more downlink carriers, the CQI being calculated based on precoding information determined by a combination of the first and second PMIS, determining, when two or more CSIs collide with one another in one uplink subframe of one uplink carrier, a CSI to be transmitted on the basis of priority, and transmitting the determined CSI over a uplink channel. If a CSI including an RI or a wideband first PMI collides with a CSI including a wideband CQI or a subband CQI, the CSI including a wideband CQI or a subband CQI has low priority and is dropped. 116-. (canceled)17. A method for transmitting channel status information (CSI) by a user equipment (UE) , the method comprising:generating the CSI including at least one of a rank indicator (RI), a precoding matrix index (PMI), or a channel quality indicator (COI), wherein a first reporting type supports the RI, a second reporting type supports a wideband (WB) PMI, a third reporting type supports a WB CQI, and a fourth reporting type supports an SB CQI; andif the UE is configured with more than one serving cell, transmitting the CSI of only one serving cell in a subframe,wherein, for the subframe, in case of collision between CSI of the second reporting type of a serving cell with CSI of the third reporting type of another serving cell, the CSI of the third reporting type has lower priority and is dropped.18. The method according to claim 17 , wherein:for the subframe, in case of collision between CSI of the second reporting type of a serving cell with CSI of the fourth reporting type of another serving cell, the CSI of the fourth reporting type has lower priority and is dropped.19. The method according to claim 17 , wherein:for the subframe, in case of ...

METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system. The present invention relates to a method for transmitting ACK/NACK in a wireless communication system in which carrier aggregation is set, and an apparatus therefor. Specifically, the present invention relates to an ACK/NACK transmission method and an apparatus therefor, the method comprising the steps of: receiving information on a plurality of physical uplink control channel (PUCCH) resources via upper layer signaling; receiving a transmit power control (TPC) field on a secondary carrier through a physical downlink control channel (PDCCH); receiving data indicated by the PDCCH; and transmitting ACK/NACK for the data, wherein the ACK/NACK is transmitted using a PUCCH resource which is indicated by the value of the TPC field among the plurality of PUCCH resources. 1. A method for , at a user equipment (UE) , transmitting acknowledgement/negative ACK (ACK/NACK) in a wireless communication system , the method comprising:configuring a primary carrier and at least one secondary carrier;receiving information on a set of physical uplink control channel (PUCCH) resources through higher layer signaling;receiving at least one physical downlink control channel (PDCCH) signal on the at least one secondary carrier at a subframe, each of the at least one PDCCH signal including resource allocation information and a physical downlink control channel (TPC) field;receiving at least one data indicated by each of the second resource allocation information in the at least one PDCCH signal on the at least one secondary carriers; andtransmitting ACK/NACK information for the at least one data via a physical uplink control channel (PUCCH),wherein a value of each of the at least one TPC field identifies one of the set of PUCCH resources as an allocated PUCCH resource for transmitting the ACK/NACK information, and the value of the TPC field in each of the at least one PDCCH signal is the same.2. The method of claim 1 , ...

METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting CSI in a wireless communication system, the method comprising: a step for configuring a plurality of serving cells; and a step for reporting the CSI of only one serving cell in a corresponding subframe, wherein the step for reporting the CSI of only one serving cell comprises: excluding reporting the CSI of a lower priority when CSI reports of the plurality of serving cells in the corresponding subframe collide; and excluding reporting the CSI of serving cells other than the serving cell having the smallest index when the CSI reports of different serving cells having the same priority in the corresponding subframe collide. 112-. (canceled)13. A method of transmitting a channel state information (CSI) report by a user equipment (UE) in a wireless communication system , the method comprising:receiving a plurality of periodic CSI report configurations for a primary cell (PCell) and one or more secondary cells (SCells); andtransmitting, through a physical uplink control channel (PUCCH) on the PCell, only one periodic CSI report of periodic CSI reports configured to be reported in a same subframe according the plurality of periodic CSI report configurations,wherein in a first case where a periodic CSI report with a subband (SB) channel quality indicator (CQI) and a periodic CSI report with a wideband (WB) CQI collide in the same subframe, the periodic CSI report with the SB CQI has lower priority and is dropped by the UE.14. The method of claim 13 , wherein in the first case:the UE transmits the periodic CSI report with the WB CQI as the only one periodic CSI report, and the periodic CSI report with the WB CQI has higher priority over the periodic CSI report with the SB CQI, even if the SB CQI is obtained from the PCell and the WB CQI is obtained from a SCell.15. The method of claim 13 , wherein in a second case where a ...

METHOD AND APPARATUS FOR TRANSMITTING UPLINK REFERENCE SIGNAL IN A MULTI-ANTENNA WIRELESS COMMUNICATION SYSTEM

A method is presented for transmitting signals at a User Equipment (UE) in a multi-antenna wireless communication system. Acknowledgment (ACK)/negative ACK (NACK) information is received from a base station (BS). At least one transport block negatively acknowledged by the ACK/NACK information is retransmitted to the BS. An uplink grant for retransmitting the at least one transport block is not detected. If a number of the at least one transport block is not equal to a number of transport blocks indicated by a most recent uplink grant, cyclic shift values and orthogonal cover codes (OCCs) of a demodulation reference signal (DMRS) for the at least one transport block are configured based on a cyclic shift field included in the most recent uplink grant and a number of layers corresponding to the at least one transport block. 1. A method for transmitting signals at a User Equipment (UE) in a multi-antenna wireless communication system , the method comprising:receiving acknowledgment (ACK)/negative ACK (NACK) information from a base station (BS); andretransmitting at least one transport block negatively acknowledged by the ACK/NACK information to the BS,wherein an uplink grant for retransmitting the at least one transport block is not detected,wherein if a number of the at least one transport block is not equal to a number of transport blocks indicated by a most recent uplink grant, cyclic shift values and orthogonal cover codes (OCCs) of a demodulation reference signal (DMRS) for the at least one transport block are configured based on a cyclic shift field included in the most recent uplink grant and a number of layers corresponding to the at least one transport block, andwherein if the number of the at least one transport block is equal to the number of transport blocks indicated by the most recent uplink grant, the cyclic shift values and the OCCs of the DMRS for the at least one transport block are same as those of the DMRS for the transport blocks indicated by the ...

METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNAS

A method and apparatus for performing effective feedback in a wireless communication system supporting multiple antennas. A method for transmitting CSI of downlink transmission via uplink in a wireless communication system includes transmitting a joint-coded rank indicator (RI) and a first wideband (WB) precoding matrix indicator (PMI) at a first subframe, and transmitting a wideband channel quality indicator (WB CQI) and a second WB PMI at a second subframe. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. If the RI is Rank-1 or Rank-2, the first PMI indicates one of subsets each having 8 indexes from among 16 indexes of the first PMI of a precoding codebook. 1. A method for transmitting channel status information (CSI) via uplink in a wireless communication system , the method comprising:transmitting a rank indicator (RI) at a first subframe; andtransmitting a wideband channel quality indicator (WB CQI), a first wideband precoding matrix indicator (WB PMI) and a second WB PMI at a second subframe,wherein:if the RI is Rank-1 or Rank-2, a number of elements for the first WB PMI is 8, andif the RI is Rank-3 or Rank-4, a number of elements for the second WB PMI is 8.2. The method according to claim 1 , wherein:if the RI is Rank-1 or Rank-2, the number of elements for the second WB PMI is 2, andif the RI is Rank-3 or Rank-4, the number of elements for the first WB PMI is 2.3. The method according to claim 1 , wherein:if the RI is Rank-5, Rank-6, or Rank-7, the number of elements for the first WB PMI is 4 and the number of elements for the second WB PMI is 1.4. The method according to claim 1 , wherein:if the RI is Rank-8, the number of elements for the first WB PMI and the number of elements for the second WB PMI are 1.5. The method according to claim 1 , wherein the first WB PMI indicates an index among 16 indexes of the first WB PMI in a precoding codebook and the second WB PMI indicates an index ...

METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNAS

A method and apparatus for performing effective feedback in a wireless communication system supporting multiple antennas. A method for transmitting CSI of downlink transmission via uplink in a wireless communication system includes transmitting a joint-coded rank indicator (RI) and a first wideband (WB) precoding matrix indicator (PMI) at a first subframe, and transmitting a wideband channel quality indicator (WB CQI) and a second WB PMI at a second subframe. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. If the RI is Rank-1 or Rank-2, the first PMI indicates one of subsets each having 8 indexes from among 16 indexes of the first PMI of a precoding codebook. 1. A method for transmitting channel status information (CSI) via uplink in a wireless communication system , the method performed by a user equipment (UE) comprising:transmitting, in a first subframe, a rank indicator (RI); andtransmitting, in a second subframe, a wideband channel quality indicator (WB CQI), a first wideband precoding matrix indicator (WB PMI), and a second WB PMI,wherein, the first WB PMI and the second WB PMI are transmitted by using 4 bits when the RI indicates rank-1, rank-2, rank-3 or rank-4, andwherein, the first WB PMI and the second WB PMI are transmitted by using 2 bits when the RI indicates rank-5, rank-6 or rank-7.2. The method according to claim 1 , wherein a number of elements for the first WB PMI is 8 and a number of elements for the second WB PMI is 2 claim 1 , when the RI indicates rank-1 or rank-2.3. The method according to claim 1 , wherein a number of elements for the first WB PMI is 2 and a number of elements for the second WB PMI is 8 claim 1 , when the RI indicates rank-3 or rank-4.4. The method according to claim 1 , wherein a number of elements for the first WB PMI is 4 and a number of elements for the second WB PMI is 1 claim 1 , when the RI indicates rank-5 claim 1 , rank-6 or rank-7.5. The method ...

METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNA

A method for transmitting channel status information (CSI) via uplink in a wireless communication system includes transmitting a first precoding matrix indicator (PMI) and a second PMI at a subframe. A subsampled codebook for each of a precoding codebook for Rank-1 and a precoding codebook for Rank-2 is determined based on at least the first PMI or the second PMI. In case of the Rank-1 or the Rank-2, a number of elements for the first PMI is 8. 1transmitting a first PUCCH report including a rank indicator (RI); andtransmitting a second PUCCH report including a channel quality indicator (CQI), a first precoding matrix indicator (PMI) and a second PMI,wherein when the RI corresponds to one of Rank-1 to Rank-4, a sub set of a codebook corresponding to the RI is available for selecting the first PMI and the second PMI, and a sum of the first PMI and the second PMI is comprised of 4 bits, andwherein when the RI corresponds to one of Rank-5 to Rank-7, a full set of a codebook corresponding to the RI is available for selecting the first PMI and the second PMI, and a sum of the first PMI and the second PMI is comprised of 2 bits.. A method for transmitting channel status information (CSI) via a physical uplink control channel (PUCCH) by a user equipment (UE) in a wireless communication system, the method comprising: Field of the InventionThe present invention relates to a wireless communication system, and more particularly to a method and apparatus for performing effective feedback in a wireless communication system supporting multiple antennas.Discussion of the Related ArtGenerally, Multiple-Input Multiple-Output (MIMO) technology will hereinafter be described in detail. In brief, MIMO is an abbreviation for Multi-Input Multi-Output. MIMO technology uses multiple transmission (Tx) antennas and multiple reception (Rx) antennas to improve the efficiency of transmission/reception (Tx/Rx) data, whereas the conventional art generally uses a single transmission (Tx) antenna and ...

METHOD FOR TRANSMITTING EFFECTIVE CHANNEL STATUS INFORMATION IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE CARRIERS

A method and apparatus for transmitting effective channel status information (CSI) in a wireless communication system supporting multiple carriers are disclosed. The method for indicating CSI transmission in a wireless communication system supporting multiple carriers includes transmitting downlink control information (DCI) including a channel quality information (CQI) request field to a UE over a physical downlink control channel (PDCCH), and receiving CSI reporting of a single downlink carrier or multiple downlink carriers from the UE over a physical uplink shared channel (PUSCH) without receiving uplink data. If the CSI for the single downlink carrier is reported, the number (NPRB) of resource blocks (RBs) established for the CSI reporting is identical to or less than X (NPRB≦X), and if the CSI for the multiple downlink carriers is reported, NPRB is identical to or less than M (where M>X). 1. A method for indicating channel status information (CSI) transmission at a base station (BS) in a wireless communication system supporting multiple carriers , the method comprising:transmitting downlink control information (DCI) including a CSI request field to a user equipment (UE) over a physical downlink control channel (PDCCH), the CSI request field having a length of 2 bits; andreceiving CSI reporting for a single downlink carrier or CSI reporting for multiple downlink carriers from the UE over a physical uplink shared channel (PUSCH) without receiving uplink data,{'sub': PRB', 'PRB, 'wherein the CSI reporting for the single downlink carrier is received if the CSI request field has a value of ‘01’ and a number (N) of resource blocks (RBs) established for the CSI reporting is identical to or less than X (N≦X),'}{'sub': 'PRB', 'wherein the CSI reporting for the multiple downlink carriers is received if the CSI request field has a value ‘10’ or ‘11’ and the Nestablished for the CSI reporting is identical to or less than M (where M>X), and'}wherein a QPSK (Quadrature Phase ...

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

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes the steps of dividing the information data to first information data and second information data if a bit size O of the information data is equal to or larger than a predetermined number; applying RM coding on each of the first information data and the second information data; concatenating the coded first information data and the coded second information data, and transmitting the concatenated data. 1. A method for receiving information data by using an RM (Reed-Muller) coding scheme at a reception device in a wireless communication system , the method comprising:receiving, by the reception device, a signal from a transmission device;dividing, by the reception device, the signal into a first signal and a second signal,{'sub': '1', 'wherein the first signal and the second signal are rate-matched by the transmission device such that the first signal corresponds to a first number Q′ of resource elements for first information data, and'}{'sub': '2', 'wherein the second signal corresponds to a second number Q′ of resource elements for second information data;'}decoding, by the reception device, the first and second signals to obtain the first and second information data,wherein the first and second information data are encoded by a Reed-Muller (RM) coding scheme; andcombining, by the reception device, the first and second information data with the information data,wherein a bit size O of the information data is equal to or larger than a predetermined number,{'sub': 1', '2, 'wherein the first number Q′ of resource elements for the first information data and the second number Q′ of resource elements for the second information data are configured by dividing a number Q′ of resource elements equally, and'}wherein the number Q′ of resource elements is configured based upon the bit size O of the information data.3. The method of ...

METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNA

A method for transmitting channel status information (CSI) via uplink in a wireless communication system includes transmitting a first precoding matrix indicator (PMI) and a second PMI at a subframe. A subsampled codebook for each of a precoding codebook for Rank-1 and a precoding codebook for Rank-2 is determined based on at least the first PMI or the second PMI. In case of the Rank-1 or the Rank-2, a number of elements for the first PMI is 8. 1. A method of reporting channel state information (CSI) by a user equipment (UE) , the method comprising:transmitting a first type physical uplink control channel (PUCCH) report for 8 transmission antenna ports in which a rank indicator (RI) and a first precoding matrix index (PMI) are jointly encoded;calculating a channel quality indicator (CQI) and a second PMI based on the RI and the first PMI, a combination of the first PMI and the second PMI indicating a single precoding matrix; andtransmitting a second type PUCCH report for the 8 transmission antenna ports including the CQI and the second PMI,wherein when the RI is lower than a predetermined value, the first PMI is selected from a subset of a codebook for the RI, andwherein when the first type PUCCH report in which the RI and the first PMI are jointly encoded collides with the second type PUCCH report including the CQI and the second PMI in a same subframe, the second type PUCCH report is dropped at the same subframe.2. The method of claim 1 , wherein the second PMI is selected from a full-set of the codebook for the RI.3. The method of claim 1 , wherein a number of available PMIs of the codebook is reduced by one-half in the subset of the codebook.4. The method of claim 1 , wherein the predetermined value is ‘8’.5. The method of claim 1 , wherein:when the RI is ‘1’ or ‘2’, the subset has 8 available indexes for the first PMI selection,when the RI is one of ‘3’ to ‘7’, the subset has 2 available indexes for the first PMI selection, andwhen the RI is ‘8’, the subset has ...

METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNA

A method for transmitting channel status information (CSI) via uplink in a wireless communication system includes transmitting a first precoding matrix indicator (PMI) and a second PMI at a subframe. A subsampled codebook for each of a precoding codebook for Rank-1 and a precoding codebook for Rank-2 is determined based on at least the first PMI or the second PMI. In case of the Rank-1 or the Rank-2, a number of elements for the first PMI is 8. 1. A method of transmitting channel state information (CSI) by a user equipment in a wireless communication system , the method comprising:measuring CSI regarding at least one of a rank indication (RI), a precoding matrix indicator (PMI) and a channel quality indicator (CQI); andtransmitting the CQI and the PMI via a physical uplink control channel (PUCCH),wherein in the measurement of the CSI, when a value of the RI is lower than a first value and the PMI is indicated by a first PMI value and a second PMI value in a codebook for 8-transmission antennas, at least one of the first PMI value and the second PMI value is obtained from a sub-sampled codebook of the codebook.2. The method of claim 1 , wherein the first value is 5 and the codebook corresponds to one of a Rank 1-codebook claim 1 , a Rank 2-codebook claim 1 , a Rank 3-codebook and a Rank 4-codebook.3. The method of claim 1 , wherein when the value of the RI is equals to or greater than the first value and the PMI is indicated by the first PMI value and the second PMI value claim 1 , the first PMI value and the second value are obtained from the codebook instead of the sub-sampled codebook.4. The method of claim 1 , wherein when the value of the RI is equals to a second value smaller than the first value claim 1 , and the PMI is indicated by the first PMI value and the second PMI value claim 1 , the first PMI value is obtained from the sub-sampled codebook and the second PMI value is obtained from the codebook.5. The method of claim 1 , further comprising:receiving at ...

METHOD FOR PERFORMING CHANNEL INTERLEAVING IN A MULTI-ANTENNA WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME

A method and user equipment (UE) for transmitting a signal to a base station in a multi-antenna wireless communication system are discussed. The method can include mapping interleaver input vector sequences to an interleaver matrix, wherein each of the interleaver input vector sequences comprises vectors having a bit size of N·Q, wherein Qis a modulation order and Nis a number of transmission layers, reading out the interleaver matrix column by column for obtaining output bit sequences, and transmitting the output bit sequences through the transmission layers to the base station. 1. A method for transmitting a signal to a base station at a user equipment (UE) in a multi-antenna wireless communication system , the method comprising:{'sub': L', 'm', 'm', 'L, 'mapping interleaver input vector sequences to an interleaver matrix, wherein each of the interleaver input vector sequences comprises vectors having a bit size of N·Q, wherein Qis a modulation order and Nis a number of transmission layers;'}reading out the interleaver matrix column by column for obtaining output bit sequences; andtransmitting the output bit sequences through the transmission layers to the base station.2. The method of claim 1 , wherein the interleaver input vector sequences comprise first interleaver input vector sequences for channel quality indicator (CQI) information and data claim 1 , second interleaver input vector sequences for rank indicator (RI) information claim 1 , and third interleaver input vector sequences for acknowledgement (ACK)/negative ACK (HACK) information.3. The method of claim 2 , wherein the first interleaver input vector sequences g claim 2 , g claim 2 , g claim 2 , g claim 2 , . . . claim 2 , g(H′=H/(Q·N) and H=G+Q) are generated by concatenating the CQI information q claim 2 , q claim 2 , q claim 2 , q claim 2 , . . . claim 2 , qhaving a bit size of Qand the data f claim 2 , f claim 2 , f claim 2 , f claim 2 , . . . claim 2 , fhaving a bit size of G and configuring the ...

METHOD AND APPARATUS FOR TRANSMITTING UPLINK REFERENCE SIGNAL IN A MULTI-ANTENNA WIRELESS COMMUNICATION SYSTEM

A method for transmitting signals at a User Equipment (UE) in a multi-antenna wireless communication system is discussed. The method includes receiving an uplink grant from a Base Station (BS); transmitting transport blocks and Reference Signals (RSs) for the transport blocks via a plurality of layers based on the uplink grant to the BS; receiving Negative ACKnowledgment (NACK) information for at least one transport block among the transport blocks from the BS; and retransmitting the at least one transport block and the RS for the at least one transport block via at least one layer to the BS. 1. A method for transmitting signals at a User Equipment (UE) in a multi-antenna wireless communication system , the method comprising:receiving an uplink grant from a Base Station (BS);transmitting transport blocks and Reference Signals (RSs) for the transport blocks via a plurality of layers based on the uplink grant to the BS;receiving Negative ACKnowledgment (NACK) information for at least one transport block among the transport blocks from the BS; andretransmitting the at least one transport block and the RS for the at least one transport block via at least one layer to the BS,wherein, if a number of the at least one transport block for the retransmission is not equal to a number of the transport blocks indicated by the uplink grant, resources of the RS for the at least one transport block for the retransmission are configured based on a cyclic shift field included in the uplink grant and a number of the at least one layer, andwherein, if the number of the at least one transport block for the retransmission is equal to the number of the transport blocks indicated by the uplink grant, the resources of the RS for the at least one transport block for the retransmission are the same as the resources of the RS for the transport blocks indicated by the uplink grant.2. The method according to claim 1 , wherein the NACK information is received through a Physical Hybrid ARQ ...

METHOD AND APPARATUS FOR PERFORMING EFFECTIVE FEEDBACK IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNAS

A method for transmitting channel status information (CSI) of downlink multi-carrier transmission includes generating the CSI including at least one of a rank indicator (RI), a first precoding matrix index (PMI), a second PMI and a channel quality indicator (CQI) for one or more downlink carriers, the CQI being calculated based on precoding information determined by a combination of the first and second PMIs, determining, when two or more CSIs collide with one another in one uplink subframe of one uplink carrier, a CSI to be transmitted on the basis of priority, and transmitting the determined CSI over a uplink channel. If a CSI including an RI or a wideband first PMI collides with a CSI including a wideband CQI or a subband CQI, the CSI including a wideband CQI or a subband CQI has low priority and is dropped. 116-. (canceled)17. A method for reporting channel status information (CSI) in a wireless access system supporting multicarrier aggregation , the method performed by a user equipment (UE) and comprising:calculating first CSI for a first component carrier (CC) of the multiple CCs based on a first CSI report type;calculating second CSI for a second CC of the multiple CCs based on a second CSI report type; andreporting only the first CSI through a physical uplink control channel (PUCCH), when a collision of a report of the first CSI with a report of the second CSI is occurred at a same subframe,wherein a content of the first CSI or the second CSI includes at least a rank indicator (RI), a wideband (WB) precoding matrix indicator (PMI), a WB first PMI, a WB second PMI, a subband (SB) second PMI, a precoder type indication (PTI), a WB channel quality indicator (CQI), or a SB CQI,wherein the first CSI report type is included in a report type group A or a report type group B, and the second CSI report type is included in a report type group C or a report type group D,wherein the report type group A and the report type group B have a same priority, andwherein the ...

Method and apparatus for performing effective feedback in wireless communication system supporting multiple antennas

A method for transmitting channel status information (CSI) of downlink multi-carrier transmission includes generating the CSI including at least one of a rank indicator (RI), a first precoding matrix index (PMI), a second PMI and a channel quality indicator (CQI) for one or more downlink carriers, the CQI being calculated based on precoding information determined by a combination of the first and second PMIs, determining, when two or more CSIs collide with one another in one uplink subframe of one uplink carrier, a CSI to be transmitted on the basis of priority, and transmitting the determined CSI over a uplink channel. If a CSI including an RI or a wideband first PMI collides with a CSI including a wideband CQI or a subband CQI, the CSI including a wideband CQI or a subband CQI has low priority and is dropped.

METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting CSI in a wireless communication system, the method comprising: a step for configuring a plurality of serving cells; and a step for reporting the CSI of only one serving cell in a corresponding subframe, wherein the step for reporting the CSI of only one serving cell comprises: excluding reporting the CSI of a lower priority when CSI reports of the plurality of serving cells in the corresponding subframe collide; and excluding reporting the CSI of serving cells other than the serving cell having the smallest index when the CSI reports of different serving cells having the same priority in the corresponding subframe collide. 112-. (canceled)13. A method for transmitting a channel state information (CSI) report by a user equipment (UE) in a wireless communication system , the method comprising:receiving, from a primary cell (Pcell), CSI configuration information for a plurality of cells; andtransmitting, to the Pcell, a CSI report for one of the plurality of cells in a subframe, based different cells, among the plurality of cells, having a plurality of CSI reports with a same priority in the subframe:', 'selecting, from among the plurality of CSI reports, a CSI report of a cell having a lowest cell index from among the different cells., 'wherein transmitting the CSI report for the one of the plurality of cells comprises14. The method of claim 13 , wherein the plurality of cells includes a plurality of secondary cells (Scells).15. The method of claim 13 , wherein transmitting the CSI report for the one of the plurality of cells is performed by selecting a CSI report for the Pcell claim 13 , based on that the CSI report for the Pcell is included in the plurality of CSI reports.16. The method of claim 13 , wherein transmitting the CSI report for the one of the plurality of cells is performed by selecting CSI reports ...

METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system. The present invention relates to a method for transmitting ACK/NACK in a wireless communication system in which carrier aggregation is set, and an apparatus therefor. Specifically, the present invention relates to an ACK/NACK transmission method and an apparatus therefor, the method comprising the steps of: receiving information on a plurality of physical uplink control channel (PUCCH) resources via upper layer signaling; receiving a transmit power control (TPC) field on a secondary carrier through a physical downlink control channel (PDCCH); receiving data indicated by the PDCCH; and transmitting ACK/NACK for the data, wherein the ACK/NACK is transmitted using a PUCCH resource which is indicated by the value of the TPC field among the plurality of PUCCH resources. 114.-. (canceled)15. A method for a user equipment (UE) to transmit acknowledgement/negative acknowledgement (ACK/NACK) in a wireless communication system , the method comprising:receiving at least two physical downlink control channel (PDCCH) signals on at least two secondary carriers among a primary carrier and plural secondary carriers, wherein each of the at least two PDCCH signals on the at least two secondary carriers includes resource allocation information and a transmit power control (TPC) field;receiving data as indicated by the resource allocation information in each of the at least two PDCCH signals on the at least two secondary carriers; andtransmitting ACK/NACK information for the data via a physical uplink control channel (PUCCH) resource indicated by using a value of the TPC field in any one of the at least two PDCCH signals on the at least two secondary carriers,wherein the value of the TPC field in each of the at least two PDCCH signals on the at least two secondary carriers is the same.16. The method of claim 15 , wherein the indicated PUCCH resource includes at least one of a physical resource block index and an ...

METHOD AND APPARATUS FOR TRANSMITTING CHANNEL QUALITY CONTROL INFORMATION USING PUCCH FORMAT 3 IN A WIRELESS ACCESS SYSTEM

A method is provided for receiving uplink control information (UCI) in a wireless access system supporting a carrier aggregation. An evolved Node-B (eNB) transmits, to a user equipment (UE), two or more physical downlink shared channels (PDSCHs) via two or more downlink component carriers, respectively. The eNB receives, from the UE, the UCI for the two or more downlink component carriers. The UCI includes acknowledgement information and channel quality information (CQI) for each of the two or more downlink carriers. The UCI is performed by using a channel coding with respect to the UCI according to a payload size of the UCI when the UCI is transmitted by using a physical uplink control channel (PUCCH) format 3. The UCI is performed by using a rate matching with respect to the channel coded UCI for the PUCCH format 3. 1. A method of receiving uplink control information (UCI) in a wireless access system supporting a carrier aggregation , the method performed by a evolved Node-B (eNB) and comprising:transmitting, to a user equipment (UE), two or more physical downlink shared channels (PDSCHs) via two or more downlink component carriers, respectively; andreceiving, from the UE, the UCI for the two or more downlink component carriers,wherein the UCI includes acknowledgement information and channel quality information (CQI) for each of the two or more downlink carriers,wherein the UCI is performed by using a channel coding with respect to the UCI according to a payload size of the UCI when the UCI is transmitted by using a physical uplink control channel (PUCCH) format 3,wherein the UCI is performed by using a rate matching with respect to the channel coded UCI for the PUCCH format 3,wherein the channel coding is performed by using a (32,O) code when the payload size of the UCI is less than or equal to 11 bits,wherein the channel coding is performed by using two (32,O) codes when the payload size of the UCI is greater than or equal to 12 bits, andwherein ‘O’ is the ...

METHOD AND APPARATUS FOR PERFORMING EFFECTIVE FEEDBACK IN WIRELESS COMMUNICATION SYSTEM SUPPORTING MULTIPLE ANTENNAS

A method for transmitting channel status information (CSI) of downlink multi-carrier transmission includes generating the CSI including at least one of a rank indicator (RI), a first precoding matrix index (PMI), a second PMI and a channel quality indicator (CQI) for one or more downlink carriers, the CQI being calculated based on precoding information determined by a combination of the first and second PMIs, determining, when two or more CSIs collide with one another in one uplink subframe of one uplink carrier, a CSI to be transmitted on the basis of priority, and transmitting the determined CSI over a uplink channel. If a CSI including an RI or a wideband first PMI collides with a CSI including a wideband CQI or a subband CQI, the CSI including a wideband CQI or a subband CQI has low priority and is dropped. 124-. (canceled)25. A method for reporting channel status information (CSI) in a wireless access system supporting multicarrier aggregation , the method performed by a user equipment (UE) and comprising:receiving a high layer signal configuring each of reporting modes for each of multiple component carriers (CCs) configured to the UE;calculating first CSI for a first CC of the multiple CCs based on the reporting modes;calculating second CSI for a second CC of the multiple CCs based on the reporting modes; andreporting the first CSI only according to carrier priorities of the first CC and the second CC when a collision of a report of the first CSI with a report of the second CSI is occurred in a same subframe,wherein each of the first CSI and the second CSI includes at least a channel quality information (CQI), a precoding matrix index (PMI), or a rank index (RI), andwherein the CQI and the PMI have been calculated based on a last reported rank indicator (RI).26. The method according to claim 25 , wherein the first CSI and the second CSI have the same priority.27. The method according to claim 25 , wherein each of the RI claim 25 , the PMI claim 25 , and the ...

METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system. In more detail, in relation to a method for a terminal to transmit ACK/NACK in a wireless communication system, an ACK/NACK transmission method includes: receiving at least one Physical Downlink Shared Channel (PDSCH); transmitting at least one ACK/NACK corresponding to the at least one PDSCH through a plurality of Physical Uplink Control Channel (PUCCH) formats; and, when the at least one ACK/NACK is transmitted using a first PUCCH format, transmitting at least one ACK/NACK in an antenna port transmission mode set for a second PUCCH format. 1. A method for transmitting , by a user equipment (UE) , an Acknowledgement/Negative Acknowledgement (ACK/NACK) signal in a wireless communication system , the method comprising:receiving, by the UE, a Physical Downlink Shared Channel(PDSCH) only on a primary cell, wherein the UE is configured with a Physical Uplink Control Channel (PUCCH) format 3; andtransmitting, by the UE on the primary cell, an ACK/NACK signal corresponding to the PDSCH using a first PUCCH format, 'wherein the antenna port transmission mode for the first PUCCH format is configured independently from an antenna port transmission mode for the PUCCH format 3,', 'wherein the ACK/NACK signal is transmitted using an antenna port transmission mode configured for the first PUCCH format,'}wherein the first PUCCH format is one of a PUCCH format 1a and a PUCCH format 1b.2. The method according to claim 1 , the antenna port transmission mode for the first PUCCH format or for the PUCCH format 3 is configured by indicator indicating whether two antenna ports are configured for the corresponding PUCCH format.3. The method according to claim 1 , wherein the ACK/NACK signal is transmitted via a first antenna port and a second antenna port claim 1 ,wherein a first PUCCH resource for the first antenna port and a second PUCCH resource for the second antenna port are different from each other.4. The method ...

Method and device for transmitting control information in a wireless communication system

The present invention relates to a wireless communication system. In more detail, in relation to a method for a terminal to transmit ACK/NACK in a wireless communication system, an ACK/NACK transmission method includes: receiving at least one Physical Downlink Shared Channel (PDSCH); transmitting at least one ACK/NACK corresponding to the at least one PDSCH through a plurality of Physical Uplink Control Channel (PUCCH) formats; and, when the at least one ACK/NACK is transmitted using a first PUCCH format, transmitting at least one ACK/NACK in an antenna port transmission mode set for a second PUCCH format.

METHOD AND APPARATUS FOR MULTIPLEXING CONTROL INFORMATION AND DATA, AND FOR TRANSMITTING THE MULTIPLEXED CONTROL INFORMATION AND DATA IN A MIMO WIRELESS COMMUNICATION SYSTEM

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting uplink control information in a wireless communication system. A method for multiplexing uplink control information and uplink data and for transmitting the multiplexed uplink control information and uplink data according to one embodiment of the present invention comprises the following steps: encoding a first transmission block and a second transmission block to generate a first codeword and a second codeword; mapping the first codeword and the second codeword to one or more layers, respectively; and transmitting, via one or more antenna ports, each layer to which the first codeword and the second codeword are mapped, wherein the uplink control information is multiplexed only to either the first transmission block or to the second transmission block. 114-. (canceled)15. A method of receiving uplink data by a base station in a wireless communication system , the method comprising:receiving a plurality of codewords (CWs) though a plurality of layers; andobtaining uplink control information (UCI) and a plurality of transport blocks (TBs) each containing the uplink data by decoding the plurality of CWs,wherein channel quality information (CQI) of the UCI is multiplexed with the uplink data of only one TB from among the plurality of TBs, andwherein a rank indicator (RI) of the UCI is multiplexed in all the TBs.16. The method of claim 15 , wherein the only one TB for multiplexing the CQI with the uplink data is selected based on modulation and coding scheme (MCS) values of the TBs.17. The method of claim 16 , wherein the only one TB selected for multiplexing the CQI with the uplink data has a highest MCS value among the MCS values claim 16 , if the MCS values are different from each other.18. The method of claim 16 , wherein the only one TB selected for multiplexing the CQI with the uplink data is a predetermined TB among the TBs claim 16 , ...

Method and device for transmitting control information in wireless communication system

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting CSI in a wireless communication system, the method comprising: a step for configuring a plurality of serving cells; and a step for reporting the CSI of only one serving cell in a corresponding subframe, wherein the step for reporting the CSI of only one serving cell comprises: excluding reporting the CSI of a lower priority when CSI reports of the plurality of serving cells in the corresponding subframe collide; and excluding reporting the CSI of serving cells other than the serving cell having the smallest index when the CSI reports of different serving cells having the same priority in the corresponding subframe collide.

Method and apparatus for transmitting control information in wireless communication system

The present invention relates to a wireless communication system. The present invention relates to a method for transmitting ACK/NACK in a wireless communication system in which carrier aggregation is set, and an apparatus therefor. Specifically, the present invention relates to an ACK/NACK transmission method and an apparatus therefor, the method comprising the steps of: receiving information on a plurality of physical uplink control channel (PUCCH) resources via upper layer signaling; receiving a transmit power control (TPC) field on a secondary carrier through a physical downlink control channel (PDCCH); receiving data indicated by the PDCCH; and transmitting ACK/NACK for the data, wherein the ACK/NACK is transmitted using a PUCCH resource which is indicated by the value of the TPC field among the plurality of PUCCH resources.

Method and apparatus for transmitting uplink reference signal in a multi-antenna wireless communication system

A method and apparatus for transmitting a Reference Signal (RS) during retransmission at a User Equipment (UE) in a multi-antenna wireless communication system are disclosed. The RS transmission method includes receiving an uplink grant from a Base Station (BS), initially transmitting data and an RS corresponding to each layer based on the uplink grant, receiving ACKnowledgment/Negative ACKnowledgment (ACK/NACK) information for the initially transmitted data, and retransmitting the RS corresponding to each layer and the data according to the ACK/NACK information. The retransmission includes initializing a cyclic shift value for the RS corresponding to each layer according to a cyclic shift field for RSs included in the uplink grant.

Method for transmitting control information in a wireless communication system and apparatus therefor

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes the steps of configuring a number of resource elements for transmitting the information data; when a bit size of the information data is equal to or larger than a predetermined number, allocating even-numbered data of the information data as first information data, and allocating odd-numbered data of the information data as second information data; applying RM coding on each of the first information data and the second information data; concatenating the coded first information data and the coded second information data, and transmitting the concatenated data by using the predetermined number of resource elements.

Method and base station for transmitting downlink signal and method and equipment for receiving downlink signal

Method for performing channel interleaving in a multi-antenna wireless communication system, and apparatus for same

The present application relates to a method in which a terminal performs channel interleaving in a multi-antenna wireless communication system. More particularly, the method comprises the following steps: constructing both channel quality indicator (CQI) information and coded data information into preset bit-wide vectors to generate a first interleaver input vector sequence; repeating both rank indicator (RI) information and acknowledgement/negative acknowledgement (ACK/NACK) information per the number (N L ) of transmission layers to generate a second interleaver input vector sequence of preset bit-wide vectors and a third interleaver input vector sequence of preset bit-wide vectors; mapping the first interleaver input vector sequence, the second interleaver input vector sequence, and the third interleaver input vector sequence to an interleaver matrix, respectively; and reading the interleaver matrix by a column basis to generate an output vector sequence. The preset bit-wide is defined by the product of a modulation order (Q P m ) and the number (N L ) of transmission layers.

Method and apparatus for transmitting control information in wireless communication system

Method and device for transmitting/receiving channel state information in wireless communication system supporting multicarriers

Method for transmitting control information in a wireless communication system and apparatus therefor

A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes the steps of configuring a number of resource elements for transmitting the information data; generating coded information data having a specific bit size by applying RM coding to the information data; performing rate matching to the coded information data so that the rate-matched information data can correspond to the configured resource elements; and transmitting the rate-matched information data by using the configured number of resource elements, wherein a minimum value Q' min for the number of resource elements is defined based upon a bit size ( O ) of the information data and based upon a bit size per symbol ( Q m ) in accordance with a modulation order.

Method and apparatus for transmitting control information in wireless communication system

Method and apparatus for performing channel measurement in a distributed multi-node system

Method and base station for transmitting downlink signal and method and equipment for receiving downlink signal

Method and apparatus for transceiving control information for uplink multi-antenna transmission

Method and apparatus for the efficient transmission of control information for supporting uplink transmission using multiple antennas

The present invention relates to a wireless communication system, and to a method and apparatus for efficiently transmitting control information for supporting an uplink transmitting technique using multiple antennas. According to one embodiment of the present invention, the method for transmitting control information for an uplink transmission using multiple antennas comprises the following steps: receiving a plurality of data blocks; transmitting ACK/NACK information for the received data blocks via a PHICH; transmitting, via a PDCCH, information containing an indicator which indicates whether to retransmit each of the plurality of data blocks; and receiving an uplink transmission in accordance with the combination of the ACK/NACK information and the information indicated by the indicator.

Method and base station for transmitting downlink signal and method and equipment for receiving downlink signal

A base station of the present invention configures resources in which a downlink signal is to be transmitted with zero power using resource sets defined for a specific number of antenna ports, regardless of the number of antenna ports actually configured in the base station, and transmits resource information indicating the configured resources to a user equipment. The user equipment of the present invention receives a downlink transmission from the base station, assuming that transmission power of resources corresponding to a resource set indicated by the resource information is zero.

Method and apparatus for transmitting control information in wireless communication system

The present invention relates to a wireless communication system. The present invention relates to a method for transmitting ACK/NACK in a wireless communication system in which carrier aggregation is set, and an apparatus therefor. Specifically, the present invention relates to an ACK/NACK transmission method and an apparatus therefor, the method comprising the steps of: receiving information on a plurality of physical uplink control channel (PUCCH) resources via upper layer signaling; receiving a transmit power control (TPC) field on a secondary carrier through a physical downlink control channel (PDCCH); receiving data indicated by the PDCCH; and transmitting ACK/NACK for the data, wherein the ACK/NACK is transmitted using a PUCCH resource which is indicated by the value of the TPC field among the plurality of PUCCH resources.

Method and device for efficient feedback in wireless communication system that supports multiple antennas

Method and device for downlink confirmation response data transmission resource allocation in a wireless communication system