Method of vertical handoff

The present invention relates to a vertical handoff method. According to the present invention, a serving network of a mobile station is determined. Herein, the mobile station that can access a first network having relatively wide service coverage and a second network having relatively narrow service coverage in an area where service coverages of heterogeneous networks are overlapped. When accessing the serving network of the first network, it is determined whether a received signal strength received from the second network is greater than a first threshold value. In addition, a first vertical handoff is decided by using a result of prediction of a transition pattern of the received signal strength that is greater than the first threshold value. When the serving network is the second network, it is determined whether the received signal strength received from the second network is less than a second threshold value. By using a result of prediction of a transition pattern of the received ...

Apparatus for encoding and decoding of integrated speech and audio

Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.

APPARATUS AND METHOD FOR ENCODING AND DECODING OF INTEGRATED SPEECH AND AUDIO

Provided are an apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is a audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; and a bitstream generator to generate a bitstream using an output signal of the first conversion encoder and an output signal of the LPC encoder.

Apparatus for encoding and decoding of integrated speech and audio

Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.

Method and apparatus for managing allocation and usage of radio resource, method and apparatus for transmitting data through unlicensed band channel, and method and apparatus for managing access of radio resouce

Provided is a method for transmitting, by a transmitter, a first data having periodicity through a channel of an unlicensed band: The transmitter adjusts at least one of transmission timing of the first data and clear channel assessment (CCA) timing for the channel to occupy the channel. The transmitter determines whether the channel may be occupied by performing a CCA on the channel at the CCA timing. The transmitter transmits the first data through the channel at the transmission timing of the first data, when it is determined that the channel may be occupied.

Method and apparatus for transmitting and receiving reference signal using unlicensed band

There are provided a method and apparatus for transmitting a discovery reference signal (DRS) through transmitting the DRS to a user equipment through a channel of an unlicensed band, receiving measurement report for measurement performed based on the DRS from the user equipment, and scheduling the cell of the unlicensed band based on the measurement report and providing a service to the user equipment through the cell of the unlicensed band.

Apparatus for transmitting and receiving data through unlicensed band

An apparatus for receiving a signal through an unlicensed band includes: a processor, a memory, and a radio frequency unit, wherein the processor executes a program stored in the memory to perform: receiving a secondary synchronization signal (SSS) in at least one remaining subframe except a subframe 0 or a subframe 5 of a plurality of subframes included in a discovery signal measurement timing configuration (DMTC), and detecting the SSS by using a subframe number of the subframe 0 or the subframe 5.

Radio channel access method and apparatus

Disclosed are a base station and a channel access method performing a channel access in a unlicensed band. The channel access method includes: performing channel sensing at least once on a channel of the unlicensed band in a channel sensing period of a frame; and broadcasting a reservation signal for the channel when the channel is empty.

Method and apparatus for transmitting adaptive partial subframe in unlicensed frequency band, method and apparatus for identifying a frame structure, and method and apparatus for transmitting signal

There is provided a method for transmitting, by a transmitter, a signal through an unlicensed band channel. The transmitter transmits an initial signal through the unlicensed band channel to preoccupy the unlicensed band channel when the unlicensed band channel is in an idle status. The transmitter includes a first partial subframe transmitted after the initial signal in a frame burst depending to transmission timing of the initial signal. Further, the transmitter transmits the frame burst through the unlicensed band channel.

Method of transmitting data in handover between base stations in wireless communication system

The present invention relates to a method of transmitting data in a handover between base stations. When a mobile terminal performs a handover between base stations in a wireless communication system, a gateway transmits data traffic to be transmitted to a mobile terminal by using an IGMP (Internet Group Management Protocol) to a serving base station being serviced to the mobile terminal and a target base station to which a handover of the mobile terminal is made in a bi-casting method. Accordingly, when the mobile terminal performs the handover between the base stations, the gateway transmits the data traffic in the bi-casting method. As a result, it is possible to efficiently use a resource of a user plane connection interval between the gateway and the base station, thereby minimizing the loss of data traffic transmitted in a downlink, that is, data.

METHOD AND APPARATUS OF SEARCHING FOR BASE STATION USING PAGING PROCEDURE IN MOBILE COMMUNICATION NETWORK

A method for searching for a base station using paging procedure in a mobile communication network has a paging agent that performs the paging procedure. The method includes: receiving, at the paging agent, subscriber information including information of a service, to which a mobile node subscribed, from a home location register while performing a location registration procedure in response to a location registration request from the mobile node; setting an available scan time based on the time required to perform the paging procedure; generating a paging request message including the available scan time and the subscriber information to send the paging request message to a base station required for paging; and generating base station information based on the subscriber information to input into the paging request message to transmit with the available scan time to the mobile node.

Apparatus and method for encoding and decoding of integrated speech and audio utilizing a band expander with a spectral band replication (SBR) to output the SBR to either time or transform domain encoding according to the input signal

Provided are an apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is a audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; and a bitstream generator to generate a bitstream using an output.

QoS control apparatus in multi-cell network system and method thereof

In a QoS information controller and method, the QoS information controller is used in a multi-cell environment to determine the traffic characteristic, the mobile communication system characteristic, the traffic processing capacity, and the radio resource, and to control the QoS information. In addition, a QoS requested by a user may be achieved since the traffic characteristic, the mobile communication system characteristic, the traffic processing capacity, and the radio resource are determined and the QoS information is controlled to efficiently process the QoS information for the multimedia traffic in the multi-cell environment.

Fast fourier transform processors, methods and orthogonal frequency division multiplexing receivers including memory banks

A signal converter having a memory bank and radix-2 Fast Fourier Transform (FFT) transforms an Orthogonal Frequency Division Multiplexing (OFDM) signal having a long preamble and data into an OFDM signal in the frequency domain, and outputs the transformed OFDM signal. The radix-2 FFT has a linear systolic array architecture, transforms the long preamble stored in the memory bank by FFT, then stores the transformed long preamble into the memory bank, transforms data input through a buffering process and data input directly by FFT, and stores the transformed data in the memory bank. The memory bank has four memories, stores the long preamble transformed or not transformed and outputs the stored long preambles or the transformed data for the purpose of demodulation as the transformed data is input. Data-processing delay and/or power consumption may be reduced during the operation of the FFT processor.

Non-orthogonal based uplink transmission method and apparatus

A terminal receives allocation of a unique first identifier of the terminal from a base station. The terminal generates first uplink data. The terminal applies interleaving based on the first identifier to the first uplink data to generate second uplink data.

Method and system for setting TCP proxy to reduce packet loss and transmission delay in wire/wireless integrated IP network

A method for performing a handover includes: (a) a wireless network controller receiving a handover request message from the mobile station; (b) during an acknowledgement of the handover of the mobile station after receiving the handover request message, the wireless network controller generating a TCP proxy and converting a terminal connection TCP to a split connection TCP; (c) the TCP proxy acknowledging the reception of a packet from the server during the handover on behalf of the mobile station; (d) the TCP proxy storing a packet received from the server in a cache; and (e) upon receiving a handover registration message, the wireless network controller transmitting the packet stored in the cache to the mobile station.

Method and system for setting TCP proxy to reduce packet loss and transmission delay in wire/wireless integrated IP network

A method for performing a handover includes: (a) a wireless network controller receiving a handover request message from the mobile station; (b) during an acknowledgement of the handover of the mobile station after receiving the handover request message, the wireless network controller generating a TCP proxy and converting a terminal connection TCP to a split connection TCP; (c) the TCP proxy acknowledging the reception of a packet from the server during the handover on behalf of the mobile station; (d) the TCP proxy storing a packet received from the server in a cache; and (e) upon receiving a handover registration message, the wireless network controller transmitting the packet stored in the cache to the mobile station.

Apparatus and method for encoding and decoding of integrated speech and audio utilizing a band expander with a spectral band replication (SBR) to output the SBR to either time or transform domain encoding according to the input signal characteristic

Provided are an apparatus and a method for integrally encoding and decoding a speech signal and an audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is an audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; a frequency band expander for expanding a frequency band of the input signal whose output is transmitted to either the time-domain encoding module or the transform encoding module based on the input characteristic; and a bitstream generator to generate a bitstream using an output signal of the first conversion encoder and an output signal of the LPC encoder.

APPARATUS FOR TRANSMITTING AND RECEIVING DATA THROUGH UNLICENSED BAND

An apparatus for receiving a signal through an unlicensed band includes: a processor, a memory, and a radio frequency unit, wherein the processor executes a program stored in the memory to perform: receiving a secondary synchronization signal (SSS) in at least one remaining subframe except a subframe 0 or a subframe 5 of a plurality of subframes included in a discovery signal measurement timing configuration (DMTC), and detecting the SSS by using a subframe number of the subframe 0 or the subframe 5.

Method and apparatus for transmitting adaptive partial subframe in unlicensed frequency band, method and apparatus for identifying a frame structure, and method and apparatus for transmitting signal

There is provided a method for transmitting, by a transmitter, a signal through an unlicensed band channel. The transmitter transmits an initial signal through the unlicensed band channel to preoccupy the unlicensed band channel when the unlicensed band channel is in an idle status. The transmitter includes a first partial subframe transmitted after the initial signal in a frame burst depending to transmission timing of the initial signal. Further, the transmitter transmits the frame burst through the unlicensed band channel.

Fast fourier transform processors, methods and orthogonal frequency division multiplexing receivers including memory banks

A signal converter having a memory bank and radix-2 Fast Fourier Transform (FFT) transforms an Orthogonal Frequency Division Multiplexing (OFDM) signal having a long preamble and data into an OFDM signal in the frequency domain, and outputs the transformed OFDM signal. The radix-2 FFT has a linear systolic array architecture, transforms the long preamble stored in the memory bank by FFT, then stores the transformed long preamble into the memory bank, transforms data input through a buffering process and data input directly by FFT, and stores the transformed data in the memory bank. The memory bank has four memories, stores the long preamble transformed or not transformed and outputs the stored long preambles or the transformed data for the purpose of demodulation as the transformed data is input. Data-processing delay and/or power consumption may be reduced during the operation of the FFT processor.

Method and apparatus for allocating uplink resources

A method and an apparatus for allocating uplink resources includes transmitting an uplink grant (UL Grant) for an unlicensed component carrier (UCC) to a plurality of terminals, wherein the UL Grant for a first terminal among the plurality of terminals includes a resource allocation information in which a transmission timing of the uplink data of a second terminal among the plurality of terminals is considered.

APPARATUS FOR ENCODING AND DECODING OF INTEGRATED SPEECH AND AUDIO

Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.

Device for providing hand-off quality of service of inter-access systems and method thereof

The present invention relates to a device for providing a quality of service (QoS) of a hand-off between heterogeneous networks, and a method thereof. According to the present invention, the device includes a device for performing a QoS management function for each access system and a device for performing a QoS management function between heterogeneous access systems in a network including a plurality of interlocked access systems. The device for performing the QoS management function for each access system manages a user service session, a local QoS of the access system, and a QoS context of the service session. The device for performing the QoS management function between the heterogeneous access systems negotiates the QoS of the service session and manages the QoS context when the hand-off is performed between the heterogeneous access systems, and performs a QoS mapping operation.

Method and apparatus of searching for base station using paging procedure in mobile communication network

A method for searching for a base station using paging procedure in a mobile communication network has a paging agent that performs the paging procedure. The method includes: receiving, at the paging agent, subscriber information including information of a service, to which a mobile node subscribed, from a home location register while performing a location registration procedure in response to a location registration request from the mobile node; setting an available scan time based on the time required to perform the paging procedure; generating a paging request message including the available scan time and the subscriber information to send the paging request message to a base station required for paging; and generating base station information based on the subscriber information to input into the paging request message to transmit with the available scan time to the mobile node.

Method of receiving of OFDM signal having repetitive preamble signal

A method of receiving an orthogonal frequency division multiplexing (OFDM) signal. The method includes receiving sample signals from the OFDM signal, providing reference sample signals, calculating a first value representing a first correlation between the sample signals and different sample signals, calculating a second value representing a second correlation between the reference sample signals and different reference sample signals, the reference sample signals and the different reference sample signals corresponding to the sample signals and the different sample signals, calculating a third value from the first value and the second value, and detecting the OFDM signal in response to the third value.

Device for providing hand-off quality of service of inter-access systems and method thereof

The present invention relates to a device for providing a quality of service (QoS) of a hand-off between heterogeneous networks, and a method thereof. According to the present invention, the device includes a device for performing a QoS management function for each access system and a device for performing a QoS management function between heterogeneous access systems in a network including a plurality of interlocked access systems. The device for performing the QoS management function for each access system manages a user service session, a local QoS of the access system, and a QoS context of the service session. The device for performing the QoS management function between the heterogeneous access systems negotiates the QoS of the service session and manages the QoS context when the hand-off is performed between the heterogeneous access systems, and performs a QoS mapping operation.

Apparatus for transmitting and receiving data through unlicensed band

An apparatus for receiving a signal through an unlicensed band includes: a processor, a memory, and a radio frequency unit, wherein the processor executes a program stored in the memory to perform: receiving a secondary synchronization signal (SSS) in at least one remaining subframe except a subframe 0 or a subframe 5 of a plurality of subframes included in a discovery signal measurement timing configuration (DMTC), and detecting the SSS by using a subframe number of the subframe 0 or the subframe 5.

Method and apparatus for allocating uplink resources

A method and an apparatus for allocating uplink resources includes transmitting an uplink grant (UL Grant) for an unlicensed component carrier (UCC) to a plurality of terminals, wherein the UL Grant for a first terminal among the plurality of terminals includes a resource allocation information in which a transmission timing of the uplink data of a second terminal among the plurality of terminals is considered.

Method and apparatus for transmitting and receiving system information in mobile communication system

A method and apparatus of receiving system information of an SeNB, including configuring connection to an MeNB and receiving a RRC Connection Reconfiguration message including the system information of a cell included in a SCG controlled by the SeNB, and a method of sharing frame offset between a MCG controlled by an MeNB and an SCG controlled by an SeNB connected to the MeNB through non-ideal backhaul, including measuring system frame number (SFN) and subframe number (SN) of a cell included in the SCG and sharing the frame offset, which is determined based on the SFN and the SN, with the MeNB or the SeNB are provided.

Method and apparatus for transmitting uplink signal in mobile communication system of unlicensed band

Disclosed herein is a method for transmitting, by a terminal, an uplink signal using a first cell type representing a cell using a licensed band frequency and a second cell type representing a cell using an unlicensed band frequency. The terminal configures at least one first radio bearer (RB) being able to use a radio resource for the first cell type and a radio resource for the second cell type for an uplink transmission. The terminal configures at least one second RB being able to use a radio resource for the first cell type for an uplink transmission. The terminal includes at least one first logical channel corresponding to the at least one first RB in a first logical channel group, and the terminal includes at least one second logical channel corresponding to the at least one second RB in a second logical channel group.

Apparatus for encoding and decoding of integrated speech and audio

Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.

Method of receiving of OFDM signal having repetitive preamble signal

A method of receiving an orthogonal frequency division multiplexing (OFDM) signal. The method includes receiving sample signals from the OFDM signal, providing reference sample signals, calculating a first value representing a first correlation between the sample signals and different sample signals, calculating a second value representing a second correlation between the reference sample signals and different reference sample signals, the reference sample signals and the different reference sample signals corresponding to the sample signals and the different sample signals, calculating a third value from the first value and the second value, and detecting the OFDM signal in response to the third value.

Method and system for searching femtocell access points

A method of searching a femtocell access point includes: transmitting configuration/measurement information an operating frequency and a transmission power strength from multiple femtocell access points located within the macro cell to an OSM)/CPC server; and receiving, at the OSM/CPC server, the configuration/measurement information from the femtocell access points, and generating a femtocell access point list usable in a mobile terminal to provide the generated femtocell access point list to the mobile terminal. The method further includes selecting, at the mobile terminal, one femtocell access point from the femtocell access point list provided from the OSM/CPC server and accessing the selected femtocell access point.

Device, system, and method for transmitting interworking information of mobile communication system and broadband wireless access system

The present invention relates to a system and method for transmitting interworking information of a mobile communication system and a broadband wireless access system. In the method, a cell broadcasting service message or system information including interworking information of the broadband wireless access system is received, and a communication connection between a mobile terminal and the broadband wireless access system is established based on the cell broadcasting service message or the system information. In addition, an interworking system of the mobile communication system and the broadband wireless access system transmits, by using a cell broadcasting service or system information broadcasted by the mobile communication system, broadband wireless access system information to a mobile terminal used in the two systems.

Method of vertical handoff

The present invention relates to a vertical handoff method. According to the present invention, a serving network of a mobile station is determined. Herein, the mobile station that can access a first network having relatively wide service coverage and a second network having relatively narrow service coverage in an area where service coverages of heterogeneous networks are overlapped. When accessing the serving network of the first network, it is determined whether a received signal strength received from the second network is greater than a first threshold value. In addition, a first vertical handoff is decided by using a result of prediction of a transition pattern of the received signal strength that is greater than the first threshold value. When the serving network is the second network, it is determined whether the received signal strength received from the second network is less than a second threshold value. By using a result of prediction of a transition pattern of the received ...

Apparatus and method for encoding and decoding of integrated speech and audio utilizing a band expander with a spectral band replication (SBR) to output the SBR to either time or transform domain encoding according to the input signal characteristic

Provided are an apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is a audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; and a bitstream generator to generate a bitstream using an output.

Method for allocating IP address to mobile station in mobile communication system

Provided is a method for allocating an Internet protocol (IP) address to a mobile station in a mobile communication system. The method includes the steps of: a) receiving an Activate Packet Data Protocol (PDP) request message including router solicitation from the mobile station; b) acquiring a global IP address of the mobile station by performing the router solicitation and a router advertisement procedure instead of the mobile station; and c) loading the acquired global IP address in an Activate PDP context Accept message and transferring the Activate PDP context Accept message to the mobile station.

Apparatus for encoding and decoding of integrated speech and audio

Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.

Method and apparatus for transmitting signal using unlicensed band in cellular system

A method and an apparatus for transmitting a resource, and a method for the HARQ retransmission using an unlicensed band include an operation of performing clear channel assessment (CCA) for the unlicensed band; and an operation of occupying a channel of the unlicensed band according to the CCA and determining whether or not the resource is transmitted based on a position of a transmission time interval (TTI) within a channel occupancy time (COT) for the channel.

QoS control apparatus in multi-cell network system and method thereof

The present invention relates to a QoS information controller in a multi-cell environment and a method thereof. According to an exemplary embodiment of the present invention, the QoS information controller is used in the multi-cell environment to determine the traffic characteristic, the mobile communication system characteristic, the traffic processing capacity, and the radio resource, and to control the QoS information. In addition, a QoS requested by a user may be achieved since the traffic characteristic, the mobile communication system characteristic, the traffic processing capacity, and the radio resource are determined and the QoS information is controlled to efficiently process the QoS information for the multimedia traffic in the multi-cell environment.

Apparatus and method for encoding and decoding of integrated speech and audio utilizing a band expander to output the audio or speech to a frequency domain encoder or an LPC encoder

Provided are an apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is a audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; a frequency band expander for expanding a frequency band of the input signal whose output is transmitted to either the first conversion encoder or the LPC encoder based on the input characteristic; and a bitstream generator to generate a bitstream using an output signal of the first conversion encoder and an output signal of the LPC encoder.

METHOD AND SYSTEM FOR SEARCHING FEMTOCELL ACCESS POINTS

A method of searching a femtocell access point includes: transmitting configuration/measurement information an operating frequency and a transmission power strength from multiple femtocell access points located within the macro cell to an OSM)/CPC server; and receiving, at the OSM/CPC server, the configuration/measurement information from the femtocell access points, and generating a femtocell access point list usable in a mobile terminal to provide the generated femtocell access point list to the mobile terminal. The method further includes selecting, at the mobile terminal, one femtocell access point from the femtocell access point list provided from the OSM/CPC server and accessing the selected femtocell access point. 1. A method of searching a femtocell access point comprising:transmitting configuration/measurement information including an operating frequency and a transmission power strength determined by measuring a pilot channel signal strength of a base station within a macro cell, from multiple femtocell access points located within the macro cell to an operator spectrum manager (OSM)/cognitive pilot channel (CPC) server;receiving, at the OSM/CPC server, the configuration/measurement information from the femtocell access points, and generating a femtocell access point list usable in a mobile terminal to provide the generated femtocell access point list to the mobile terminal; andselecting, at the mobile terminal, one femtocell access point from the femtocell access point list provided from the OSM/CPC server and accessing the selected femtocell access point.2. The method of claim 1 , wherein said accessing the selected femtocell access point includes:comparing, at the mobile terminal, the configuration/measurement information of each femtocell access point included in the femtocell access point list with a pilot channel signal strength of the base station within the macro cell; andselecting a femtocell access point having a smallest frequency interference ...

CONTROL METHOD FOR DEVICE-TO-DEVICE COMMUNICATION

Provided is a control method for device-to-device (D2D) communication. A base station measures a load of a cell, receives location information about each piece of user equipment (UE) from a plurality of pieces of UE, selects any one of an overlay-based resource allocation method and an underlay-based resource allocation method on the basis of the measured cell load and the location information about the respective pieces of UE, allocates resources for D2D communication on the basis of the selected resource allocation method, and controls power according to the locations of the pieces of UE and a density of pieces of cellular communication UE. Accordingly, it is possible to improve resource use efficiency and efficiently remove interference. 1. A control method for device-to-device (D2D) communication performed in a base station , comprising:measuring a load of a cell;receiving location information about each piece of user equipment (UE) from a plurality of pieces of UE;selecting any one of an overlay-based resource allocation method and an underlay-based resource allocation method on the basis of the measured cell load and the location information about the respective pieces of UE; andallocating resources for D2D communication on the basis of the selected resource allocation method.2. The control method for D2D communication of claim 1 , wherein receiving location information about each piece of UE from the plurality of pieces of UE includes:transmitting a message requesting setup of a D2D communication link to the plurality of pieces of UE; andreceiving the location information from the respective pieces of UE receiving the message requesting setup of a D2D communication link.3. The control method for D2D communication of claim 1 , wherein selecting any one resource allocation method includes:determining whether pieces of UE between which a D2D communication link will be set among the plurality of pieces of UE are present in the same cell on the basis of the ...

MARITIME COMMUNICATION SYSTEM AND METHOD

Provided is a maritime communication system and method. A ship station of the maritime communication system may receive, from a maritime broadcast base station, maritime configuration information that includes setting information of shore base stations and setting information of maritime ship stations, may establish a radio link when a radio link configurable shore base station is present, may set the radio link through a radio link configurable neighbor ship station when the radio link configurable shore base station is absent, and may establish the radio link with an internal maritime satellite (INMARSAT) or a maritime very small aperture terminal (MVSAT) when the radio link configurable shore base station is absent and when the radio link configurable neighbor ship station is absent. 1. A maritime configuration server of a maritime communication system , comprising:a communication unit to receive setting information of shore base stations and setting information of maritime ship stations;a database to store and manage maritime configuration information that comprises the setting information of the shore base stations and the setting information of the maritime ship stations; anda controller to control the maritime configuration information to be periodically broadcasted through a maritime broadcast base station.2. The maritime configuration server of claim 1 , wherein when the setting information of the shore base stations and the setting information of the maritime ship stations is modified claim 1 , the controller controls the maritime configuration information stored in the database to be updated.3. The maritime configuration server of claim 1 , wherein the controller controls the maritime configuration information to be transmitted to a ship station that is established with a radio link claim 1 , through the radio link.4. The maritime configuration server of claim 1 , wherein the setting information of the shore base stations comprises information associated ...

METHOD OF DEVICE TO DEVICE DISCOVERY AND APPARATUS THEREOF

There are provided a method of a device-to-device (D2D) discovery and an apparatus thereof. The method of the device-to-device discovery performed in a terminal may includes registering a discovery service of the terminal using service information on a service provided from an user; transmitting a discovery transmission activation request to a network in which the terminal is located; receiving a response in response to the discovery transmission activation request from the network; and transmitting a discovery message when the response is an approval message. 1. A method of device-to-device discovery performed in a terminal , comprising:registering a discovery service of the terminal using service information on a service provided by an user;transmitting a discovery transmission activation request to a network in which the terminal is located;receiving a response in response to the discovery transmission activation request from the network; andtransmitting a discovery message when the response is an approval message.2. The method of claim 1 , wherein the service information includes information on an URL of a server which provides information on service category and detail information on the service provided.3. The method of claim 2 , wherein the information on a service category is registered using a service code which corresponds to the service category based on a predetermined code mapping scheme.4. The method of claim 1 , wherein the discovery transmission activation request includes a discovery type claim 1 , a discovery state claim 1 , and a discovery range class.5. The method of claim 1 , wherein the response includes information on radio resources allocated for transmission of the discovery message.6. The method of claim 5 , wherein the discovery message is transmitted using the radio resources indicated by the response.7. The method of claim 1 , wherein the discovery message includes the service code corresponding to the service category claim 1 , a ...

METHOD FOR PROVIDING DUAL CONNECTIVITY IN WIRELESS COMMUNICATION SYSTEM

Disclosed herein are a dual connectivity method including determining another base station to be dually connected with UE, setting up another base station, and reconfiguring the RRC connection of the UE with another base station, a method of changing a base station in a dual connectivity state, a method of hanging radio resources in a dual connectivity state, and a method of releasing dual connectivity. 1. A method for dually connecting , by a base station , User Equipment (UE) with other base station , the method comprising:determining a first base station of the at least one other base station;setting up the first base station;reconfiguring Radio Bearer (RB) connection of the UE with the first base station; andperforming communication based on dual connectivity with the UE and the first base station.2. The method of claim 1 , wherein determining the first base station comprises setting up the first base station as a secondary eNB (SeNB) for the UE.3. The method of claim 2 , wherein determining the first base station comprises determining the first base station by taking a load of the base station into consideration.4. The method of claim 2 , wherein setting up the first base station comprises:transferring a Secondary eNB (SeNB) setup message to the first base station; andreceiving a response to the SeNB setup message from the first base station.5. The method of claim 4 , wherein the SeNB setup message comprises at least one of information about a Cell-Radio Network Temporary Identifier (C-RNTI) of the UE claim 4 , information about attributes of a bearer to be configured claim 4 , and information about UE radio access capabilities.6. The method of claim 4 , wherein the response to the SeNB setup message comprises a result code generated after an admission control procedure regarding whether a bearer has been configured is performed.7. The method of claim 1 , wherein reconfiguring the RRC connection comprises:instructing the UE to access the first base station; ...

METHOD AND APPARATUS FOR UPLINK TRANSMISSION IN COMMUNICATION SYSTEM

A method and an apparatus for uplink transmission in a communication system. An operation method of a terminal includes: receiving, from a base station, first SFI information indicating n flexible symbol(s); receiving, from the base station, second SFI information re-indicating m symbol(s) of the n flexible symbol(s) as uplink (UL) symbol(s); and transmitting an SRS to the base station through the m symbol(s) re-indicated as a UL symbol among the n flexible symbol(s) indicated as a flexible symbol. Therefore, performance of the communication system can be improved. 1. An operation method of a terminal in a communication system , the operation method comprising:receiving from a base station first slot format indicator (SFI) information indicating n flexible symbol(s);receiving from the base station an SRS configuration message configuring to transmit a sounding reference signal (SRS) to the base station;receiving from the base station second SFI information re-indicating m symbol(s) among the n flexible symbol(s) as uplink symbol(s); andtransmitting the SRS to the base station through the m symbol(s) re-indicated as UL symbols among the n flexible symbol(s) indicated as flexible symbol(s),wherein each of n and m is a natural number.2. The operation method according to claim 1 , wherein k symbols among symbols constituting a slot configured based on the first SFI information and the second SFI information are configured for transmission of the SRS claim 1 , the SRS is transmitted through the m symbol(s) re-indicated as the UL symbol(s) among the k symbols claim 1 , the SRS is not transmitted in the flexible symbol among the k symbols claim 1 , and k is an integer equal to or greater than 2.3. The operation method according to claim 1 , wherein the second SFI information re-indicates remaining symbol(s) excluding the m symbol(s) among the n flexible symbol(s) as downlink (DL) symbol(s) or flexible symbol(s).4. The operation method according to claim 1 , wherein the ...

APPARATUS FOR TRANSMITTING AND RECEIVING DATA THROUGH UNLICENSED BAND

An apparatus for receiving a signal through an unlicensed band includes: a processor, a memory, and a radio frequency unit, wherein the processor executes a program stored in the memory to perform: receiving a secondary synchronization signal (SSS) in at least one remaining subframe except a subframe or a subframe of a plurality of subframes included in a discovery signal measurement timing configuration (DMTC), and detecting the SSS by using a subframe number of the subframe or the subframe 1. An apparatus for receiving a signal through an unlicensed band , comprising:a processor, a memory, and a radio frequency unit,wherein the processor executes a program stored in the memory to perform:{'b': 0', '5, 'receiving a secondary synchronization signal (SSS) in at least one remaining subframe except a subframe or a subframe of a plurality of subframes included in a discovery signal measurement timing configuration (DMTC), and'}{'b': 0', '5, 'detecting the SSS by using a subframe number of the subframe or the subframe .'}3. The apparatus of claim 1 ,wherein the processor executes the program to further perform:acquiring a cell identification (Cell ID) based on the detection result of the SSS.4. The apparatus of claim 1 ,wherein when the processor performs receiving the SSS, the processor performs receiving the SSS in a first subframe of the at least one remaining subframe, andthe processor executes the program to further perform:receiving data in a next subframe after the first subframe of the at least one remaining subframe.5. The apparatus of claim 1 ,wherein when the processor performs receiving the SSS, the processor performs receiving a primary synchronization signal (PSS) and cell-specific reference signal (CRS) in a first subframe of the at least one remaining subframe.6. The apparatus of claim 5 ,wherein when the processor performs receiving the SSS, the PSS, and the CRS, the processor performs receiving a channel state information-reference signal (CSI-RS) in ...

METHOD OF DEVICE-TO-DEVICE DISCOVERY AND APPARATUS THEREOF

Disclosed are a method of device-to-device discovery and an apparatus for the same. A method of device-to-device discovery performed in a discovery terminal may include receiving a discovery identifier of the discovery terminal from a device-to-device server; performing an authorization procedure on performing the restricted discovery of an application located in the discovery terminal with the device-to-device server; and obtaining terminal information of a discoverable terminal as a counterpart terminal with which performs the restricted discovery from the device-to-device server, when the authorization is completed. Thus, the device-to-device discovery may be performed efficiently. 1. A method of restricted discovery performed in a discovery terminal , the method comprising:receiving a discovery identifier of the discovery terminal from a device-to-device server;performing an authorization procedure on performing the restricted discovery of an application located in the discovery terminal with the device-to-device server; andobtaining terminal information of a discoverable terminal as a counterpart terminal with which performs the restricted discovery from the device-to-device server, when the authorization is completed.2. The method of claim 1 , wherein the discovery identifier indicates that the discovery terminal supports the restricted discovery.3. The method of claim 1 , wherein the performing an authorization procedure includes transmitting an authorization request message requesting an authorization on performing the restricted discovery of the application located in the discovery terminal to the device-to-device server; and receiving an authorization response message in response to the authorization request message from the device-to-device server.4. The method of claim 3 , wherein the authorization request message includes an identifier of the discovery terminal and an identifier of the application.5. The method of claim 1 , the obtaining terminal ...

METHOD FOR MANAGING SECURITY KEY OF MOBILE COMMUNICATION SYSTEM, AND APPARATUS THEREFOR

A security key management method performed in a PDCP layer of a terminal dual-connected to a first cell and a second cell may comprise receiving a PDCP PDU on which ciphering or integrity protection to which a first security key of the first cell or a second security key of the second cell is applied is performed; performing at least one of integrity verification and header decompression for the PDCP PDU based on the first security key; performing at least one of integrity verification and header decompression for the PDCP PDU based on the second security key; and determining a security key applied to the PDCP PDU, based on result of the at least one of integrity verification and header decompression based on the first security key and result of the at least one of integrity verification and header decompression based on the second security key. 1. A method of managing a security key , performed in a packet data convergence protocol (PDCP) layer of a terminal dual-connected to a first cell and a second cell , the method comprising:receiving a PDCP protocol data unit (PDU) on which ciphering or integrity protection to which a first security key of a PDCP layer of the first cell or a second security key of a PDCP layer of the second cell is applied is performed;performing at least one of integrity verification and header decompression for the PDCP PDU based on the first security key;performing at least one of integrity verification and header decompression for the PDCP PDU based on the second security key; anddetermining a security key applied to the PDCP PDU, based on a result of the at least one of integrity verification and header decompression based on the first security key and a result of the at least one of integrity verification and header decompression based on the second security key.2. The method according to claim 1 , wherein the method is performed in a situation where a security key confusion occurs.3. The method according to claim 2 , wherein the ...

APPARATUS FOR ENCODING AND DECODING OF INTEGRATED SPEECH AND AUDIO

Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate ; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream. 1. An encoding method of an input signal performed by at least one processor , the encoding method comprising:analyzing a frame of the input signal whether the frame is a speech frame or an audio frame; selecting a speech encoder when the frame the speech frame, and', 'selecting an audio encoder when the frame is the audio frame; and', 'generating a bitstream based on the encoded core band of the input signal,, 'encoding a core band of the input signal bywherein the core band is a low frequency band which is not expanded in a frequency band of the input signal,wherein a high frequency band is generated using the core band based on a frequency band expander in a decoding process.2. The encoding method of claim 1 , further comprising:converting a sampling rate of the input signal having an expanded frequency band to a sampling rate for the encoding the core band of the input signal.3. The encoding method of claim 1 , wherein the converting comprises:converting the sampling rate of the input signal to a sampling rate required by one of the speech encoder and the audio encoder.4. The encoding method of claim 2 , wherein the converting comprises:down-sampling the sampling rate of ...

APPARATUS AND METHOD FOR ENCODING AND DECODING OF INTEGRATED SPEECH AND AUDIO

Provided are an apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is a audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; and a bitstream generator to generate a bitstream using an output 1. A method for encoding an input signal executed by a computer , the method comprising:determining a characteristic of the input signal whether the input signal has an audio characteristic or a speech characteristicencoding the input signal based on the characteristic, using either a first encoder based on a time-domain coding scheme or a second encoder based on a transform-coding scheme,generating information for expanding the input signal to a high frequency band signalgenerating a bitstream including an encoding result of the input signal.wherein the input signal is transmitted to the first encoder or the second encoder according to the characteristic of the input signal being the audio characteristic or the speech characteristic.2. The method of claim 1 , wherein the encoding comprising:encoding a core band of the input signal,wherein the core band is low frequency band which is not to be expanded in the input signal.3. The method of claim 1 , wherein the encoding comprising:encoding the input signal using the first encoder, when the characteristic of the input signal has the speech characteristic, orencoding the input signal using the second encoder, when the characteristic of the input signal has the audio characteristic.4. The method of claim 1 , wherein the time-domain coding scheme includes a Code Excitation Linear Prediction (CELP) claim 1 , and the transform-coding ...

APPARATUS FOR ENCODING AND DECODING OF INTEGRATED SPEECH AND AUDIO

Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream. 1. An encoding method of a input signal , the encoding method comprising:encoding a core band of the input signal by changing a speech encoding module or an audio encoding module whether a frame of the input signal has a speech characteristics or an audio characteristic;generating a bitstream based on the core band of the input signal,wherein the core band is a low frequency band without a high frequency band in a frequency band of the input signal,wherein the bitstream includes information for compensating a switching between the frame of the input signal having a speech characteristic and the frame of the input signal having the audio characteristic.2. The encoding method of claim 1 , further comprising:converting a sampling rate of the input signal having expanded frequency band.3. The encoding method of claim 2 , wherein the converting comprise:converting the sampling rate of the input signal to a sampling rate required for by the speech encoding module or the audio encoding module.4. The encoding method of claim 2 , wherein the converting comprise:down-sampling a sampling rate of the input signal by ½.5. The encoding method of claim 2 , wherein the converting comprise:down ...

METHOD AND APPARATUS FOR MANAGING ALLOCATION AND USAGE OF RADIO RESOURCE, METHOD AND APPARATUS FOR TRANSMITTING DATA THROUGH UNLICENSED BAND CHANNEL, AND METHOD AND APPARATUS FOR MANAGING ACCESS OF RADIO RESOURCE

Provided is a method for transmitting, by a transmitter, a first data having periodicity through a channel of an unlicensed band: 1. A method for transmitting , by a transmitter , a first data having periodicity through a channel of an unlicensed band , comprising:adjusting at least one of transmission timing of the first data and clear channel assessment (CCA) timing for the channel to occupy the channel;determining whether the channel is occupied by performing a CCA on the channel at the CCA timing; andwhen it is determined that the channel is occupied, transmitting the first data through the channel at the transmission timing of the first data.2. The method of claim 1 , wherein:the adjusting includes:adjusting a transmission offset for the transmission timing of the first data so that the transmission timing of the first data does not overlap with timing when other apparatuses transmit data having the periodicity through the channel.3. The method of claim 1 , wherein:the determining includes:continuously performing the CCA on the channel until the channel is occupied, independent of a transmission offset for the transmission timing of the first data.4. The method of claim 3 , wherein:the transmitting includes:transmitting the first data at the timing when the channel is occupied, not timing when the first data is scheduled to be transmitted; andinforming a receiver receiving the first data that the first data is transmitted at timing other than the scheduled timing.5. The method of claim 1 , wherein:the adjusting includes:when the first data is not transmitted within a previous transmission period for the first data, configuring the CCA timing to be timing earlier than timing when the CCA starts within the previous transmission period by a predetermined value.6. The method of claim 5 , wherein:the configuring of the CCA timing includes:when a sum of a first duration between the transmission timing of the first data defined by a transmission offset for the first ...

METHOD AND APPARATUS FOR MANAGING ALLOCATION AND USAGE OF RADIO RESOURCE, METHOD AND APPARATUS FOR TRANSMITTING DATA THROUGH UNLICENSED BAND CHANNEL, AND METHOD AND APPARATUS FOR MANAGING ACCESS OF RADIO RESOURCE

Provided is a method for transmitting, by a transmitter, a first data having periodicity through a channel of an unlicensed band: 1. A method for transmitting data through an unlicensed channel by a terminal , the method comprising:receiving first uplink resource allocation information to transmit a first signal;receiving second uplink resource allocation information to transmit a second signal;performing channel access for the unlicensed channel to transmit the first signal based on the first uplink resource allocation information;determining that channel access to transmit the first signal through the unlicensed channel has been failed;attempting the channel access for the unlicensed channel to transmit the second signal after the determination of the channel access failure; andtransmitting the second signal based on success of the attempted channel access.2. The method of claim 1 , wherein the first signal carries uplink data and the second signal is an uplink reference signal.3. The method of claim 1 , wherein the second signal is a reference signal transmitted by a periodical allocation.4. The method of claim 3 , wherein the reference signal is a sounding reference signal.5. The method of claim 1 , wherein the terminal is scheduled claim 1 , by the first uplink resource allocation information and the second uplink resource allocation information claim 1 , to transmit the second signal contiguous to the first signal.6. The method of claim 5 , wherein the attempting the channel access for the unlicensed channel to transmit the second signal after the determination of the channel access failure includes attempting the channel access for time duration in which transmission of the first signal has been scheduled.7. A terminal for transmitting data through an unlicensed channel claim 5 , the terminal comprising:a processor, a memory, and a communication unit, wherein the processor executes a program stored in the memory to perform:receiving, from a base station ...

Method and apparatus for transmitting uplink signal in mobile communication system of unlicensed band

Disclosed herein is a method for transmitting, by a terminal, an uplink signal using a first cell type representing a cell using a licensed band frequency and a second cell type representing a cell using an unlicensed band frequency. The terminal configures at least one first radio bearer (RB) being able to use a radio resource for the first cell type and a radio resource for the second cell type for an uplink transmission. The terminal configures at least one second RB being able to use a radio resource for the first cell type for an uplink transmission. The terminal includes at least one first logical channel corresponding to the at least one first RB in a first logical channel group, and the terminal includes at least one second logical channel corresponding to the at least one second RB in a second logical channel group.

COMMUNICATION METHOD AND APPARATUS IN NETWORK ENVIRONMENT WHERE TERMINAL MAY HAVE DUAL CONNECTIVITY TO MULTIPLE BASE STATIONS

A communication method of a terminal that may have dual connectivity to a first base station and a second base station is provided. The terminal receives a first Radio Resource Control (RRC) message from the first base station only through a first interface between the first base station and the terminal. The terminal transmits a second RRC message to the first base station only through the first interface. 1. A communication method of a terminal that may have dual connectivity to a first base station and a second base station , the communication method comprising:receiving a first Radio Resource Control (RRC) message from the first base station only through a first interface between the first base station and the terminal; andtransmitting a second RRC message to the first base station only through the first interface.2. The communication method of claim 1 , wherein the terminal does not receive the first RRC message from the second base station claim 1 ,a user plane protocol of the first base station and a user plane protocol of the second base station support a bearer split function, andthe user plane protocol of the second base station comprises remaining protocols, except for a Packet Data Convergence Protocol (PDCP) among the PDCP, a Radio Link Control (RLC) protocol, and a Medium Access Control (MAC) protocol.3. The communication method of claim 2 , wherein the first base station is a master base station that performs control and service for the terminal claim 2 , and the second base station is an auxiliary base station that provides an auxiliary service to the terminal claim 2 , andthe receiving of a first RRC message comprises receiving the first RRC message using at least one Signaling Radio Bearer (SRB) that is set through an RRC protocol of the first base station and an RRC protocol of the terminal,wherein the SRB comprises:a first SRB used for transmitting/receiving a message of a Common Control Channel (CCCH) based on a Transparent Mode (TM); andat ...

Method of transmitting discovery signal and radio link setup method using the same

A radio link setup method performed by a first communication node constituting a wireless communication network may comprise transmitting a first master discovery signal including a first sector identifier and a first beam index of the first communication node to a second communication node by using a master sector among a plurality of sectors of the first communication node; receiving a first slave discovery signal including a second sector identifier and a second beam index of the second communication node receiving the first master discovery signal; in response to the first slave discovery signal, transmitting a feedback message including the second sector identifier and the second beam index to the second communication node; and determining a beam for transmission and reception with the second communication node based on the first sector identifier, the first beam index, the second sector identifier, and the second beam index.

MULTI-SUBCARRIER BASED RADIO FRAME TRANSMISSION METHOD AND COMMUNICATION NODE THEREFOR

A multi-subcarrier based radio frame transmission method of a communication node in a mobile communication system may comprise configuring at least one beam sweeping region for beam sweeping in a plurality of subframes constituting a radio frame; arranging a broadcast channel (BCH) or a feedback channel (FBCH) together with a plurality of preambles (PAs) in the at least one beam sweeping region; and transmitting the radio frame in which the at least one beam sweeping region is configured. 1. A multi-subcarrier based radio frame transmission method of a communication node in a mobile communication system , comprising:configuring at least one beam sweeping region for beam sweeping in a plurality of subframes constituting a radio frame;arranging a broadcast channel (BCH) or a feedback channel (FBCH) together with a plurality of preambles (PAs) in the at least one beam sweeping region; andtransmitting the radio frame in which the at least one beam sweeping region is configured.2. The multi-subcarrier based radio frame transmission method according to claim 1 , wherein claim 1 , in the transmitting claim 1 , the BCH or the FBCH is transmitted together with the plurality of PAs through a plurality of beams in a time division multiplexing (TDM) scheme by grouping the plurality of beams.3. The multi-subcarrier based radio frame transmission method according to claim 1 , wherein claim 1 , in the transmitting claim 1 , the BCH or the FBCH is transmitted together with the plurality of PAs through a same beam in a time division multiplexing (TDM) scheme by grouping the BCH or the FBCH together with the plurality of PAs.4. The multi-subcarrier based radio frame transmission method according to claim 1 , wherein claim 1 , in the transmitting claim 1 , the BCH or the FBCH is transmitted together with the plurality of PAs by using different frequency bands in a frequency division multiplexing (FDM) scheme claim 1 , transmitted together with the plurality of PAs by using a first ...

Non-orthogonal transmission method and apparatus in communication system

An operation method of a first terminal in a communication system may comprise receiving, from a base station, a control message including information on a resource allocated for a transmission indicator used for identifying the first terminal among a plurality of terminals performing uplink transmission; transmitting the transmission indicator to the base station using the resource allocated for the transmission indicator; and after transmitting the transmission indicator, transmitting an uplink signal to the base station using a preconfigured resource without an uplink grant.

OPERATION METHOD OF COMMUNICATION NODE SUPPORTING MOBILITY IN COMMUNICATION NETWORK

An operation method of a first communication node, which controls a plurality of communication nodes included in a mobile xhaul network supporting mobility, may comprise performing an attach procedure between the first communication node and a second communication node among the plurality of communication nodes; configuring a path for communications between the second communication node and a third communication node for which attach procedure has been completed among the plurality of communication nodes; and supporting communications of the second communication node and the third communication node using the configured path. 1. An operation method of a first communication node for controlling a plurality of communication nodes included in a mobile xhaul network supporting mobility , the operation method comprising:performing an attach procedure between the first communication node and a second communication node among the plurality of communication nodes;configuring a path for communications between the second communication node and a third communication node for which attach procedure has been completed among the plurality of communication nodes; andsupporting communications of the second communication node and the third communication node using the configured path.2. The operation method according to claim 1 , wherein the first communication node performs a function of managing mobility of the plurality of communication nodes claim 1 , a function of managing paths for communications of the plurality of communication nodes claim 1 , and a function of managing resources for the plurality of communication nodes.3. The operation method according to claim 1 , wherein the first communication node changes a state of the second communication node from a deregistered state into a registered state when the attach procedure between the first communication node and the second communication node is completed.4. The operation method according to claim 3 , wherein the first ...

METHOD FOR DEVICE-TO-DEVICE COMMUNICATION BASED ON WIRELESS LOCAL AREA NETWORK AND APPARATUS FOR THE SAME

Methods for device-to-device communication based on wireless local area network are disclosed. A method for device-to-device communications performed in a first terminal may comprise configuring a default bearer by interworking with a core network supporting cellular communication, configuring a session by interworking with the core network, discovering a counterpart terminal performing device-to-device communications with the first terminal based on a request of configuring a dedicated bearer, and configuring a communication path according to a communication mode determined based on a result of the discovering. Therefore, according to the present invention, D2D communications using a Wi-Fi P2P may be supported efficiently. 1. A method for device-to-device communications performed in a first terminal , the method comprising:configuring a default bearer by interworking with a core network supporting a cellular communication;configuring a session by interworking with the core network;discovering a counterpart terminal performing device-to-device communications with the first terminal based on a request of configuring a dedicated bearer; andconfiguring a communication path according to a communication mode determined based on a result of the discovering.2. The method of claim 1 , wherein the session is configured based on a session initiation protocol (SIP).3. The method of claim 1 , wherein the first terminal discovers the counterpart terminal performing device-to-device communications with the first terminal based on a cellular communication manner.4. The method of claim 1 , wherein the first terminal discovers the counterpart terminal performing device-to-device communications with the first terminal based on a wireless local area network (WLAN) peer-to-peer (P2P) communication manner.5. The method of claim 1 , wherein the communication path is configured with the dedicated bearer for the cellular communication when the communication mode is a cellular communication ...

METHOD AND APPARATUS FOR UPLINK TRANSMISSION IN COMMUNICATION SYSTEM

A method and an apparatus for uplink transmission in a communication system. An operation method of a terminal includes: receiving, from a base station, first SFI information indicating n flexible symbol(s); receiving, from the base station, second SFI information re-indicating m symbol(s) of the n flexible symbol(s) as uplink (UL) symbol(s); and transmitting an SRS to the base station through the m symbol(s) re-indicated as a UL symbol among the n flexible symbol(s) indicated as a flexible symbol. Therefore, performance of the communication system can be improved. 1. An operation method performed in a terminal in a communication system , the operation method comprising:receiving scheduling information for physical uplink shared channel (PUSCH) transmission from a base station;receiving a second downlink control information (DCI) including a bitmap from the base station, each bit included in the bitmap indicating whether or not the PUSCH transmission is canceled in one resource region mapped to the each bit;identifying one or more resource regions in which the PUSCH transmission is canceled based on the bitmap; andcancelling the PUSCH transmission scheduled by the scheduling information in overlapped resources between resources indicated by the scheduling information and the identified one or more resource regions.2. The operation method of claim 1 , further comprising receiving a higher layer message including a first information element (IE) indicating a size of the bitmap claim 1 , a second IE on time duration in which the second DCI is detected claim 1 , and a third IE indicating a number of groups of symbols within the time duration from the base station.3. The operation method of claim 2 , wherein the one resource region includes one or more symbols in a time domain claim 2 , and a number of the one or more symbols included in the one resource region is a value of a number of symbols belonging to the time duration divided by the number of groups.4. The ...

METHOD AND APPARATUS FOR TRANSMITTING ADAPTIVE PARTIAL SUBFRAME IN UNLICENSED FREQUENCY BAND, METHOD AND APPARATUS FOR IDENTIFYING A FRAME STRUCTURE, AND METHOD AND APPARATUS FOR TRANSMITTING SIGNAL

There is provided a method for transmitting, by a transmitter, a signal through an unlicensed band channel. The transmitter transmits an initial signal through the unlicensed band channel to preoccupy the unlicensed band channel when the unlicensed band channel is in an idle status. The transmitter includes a first partial subframe transmitted after the initial signal in a frame burst depending to transmission timing of the initial signal. Further, the transmitter transmits the frame burst through the unlicensed band channel. 120-. (canceled)21. A transmission method for a transmitter , the method comprising:monitoring a status of an unlicensed band channel;starting occupation for the unlicensed band channel at a first timing, the first timing being different from a boundary timing of a time domain symbol in a first subframe when the status of the unlicensed band channel is an idle status at the first timing; andtransmitting information about transmission of first data through a first control channel when transmitting the first data at a second time slot, which has a length the same as the second time slot,wherein a first time slot and the second time slot subsequent to the first time slot are included in the first subframe.22. The method of claim 21 , further comprising:including second data, which has a length the same as one among a downlink pilot time slot (DwPTS) of a special subframe and the first subframe, in an end of a transmission burst including the first data.23. The method of claim 22 , wherein:the second data has a length corresponding to one among 3 time domain symbols, 6 time domain symbols, 9 time domain symbols, 10 time domain symbols, 11 time domain symbols, and 12 time domain symbols when the second data has a length the same as the DwPTS.24. The method of claim 22 , further comprising:transmitting information about transmission of the second data through a second control channel.25. A method for transmitting claim 22 , by a transmitter claim 22 ...

NON-ORTHOGONAL BASED UPLINK TRANSMISSION METHOD AND APPARATUS

A terminal receives allocation of a unique first identifier of the terminal from a base station. The terminal generates first uplink data. The terminal applies interleaving based on the first identifier to the first uplink data to generate second uplink data. 1. An uplink transmission method of a terminal , comprising:receiving allocation of a unique first identifier of the terminal from a base station;generating first uplink data; andgenerating second uplink data by applying interleaving based on the first identifier to the first uplink data.2. The uplink transmission method of claim 1 , wherein the generating of second uplink data includes:generating a plurality of parameters by using the first identifier;generating first data by applying interleaving based on a first parameter from among the plurality of parameters to the first uplink data; andgenerating second data by applying interleaving based on a second parameter from among the plurality of parameters to the first data.3. The uplink transmission method of claim 2 , wherein the generating of first data includes performing interleaving based on the first parameter according to the following Equation 1:{'br': None, 'i': d', 'a', '+i', 'L', 'b', 'i, 'sub': 0', '3', 'itlv, '(()mod )=()'}{'br': None, 'i': d', 'L', 'i', '└i', 'd', 'i, 'sub': 1', 'itlv', '0, '((/2)·(mod 2)+/2┘)=() \u2003\u2003[Equation 1]'}{'sub': 3', 'itlv', '1, '(b( ) is the first uplink data, ais the first parameter, Lis a length of an interleaving sequence, and d( )is the first data, and i is an index).'}4. The uplink transmission method of claim 2 , wherein the generating of second data includes performing interleaving based on the second parameter according to the following Equation 1:{'br': None, 'i': d', 'a', '+i', 'L', 'd', 'i, 'sub': 2', '2', 'itlv', '1, '((3)mod )=()'}{'br': None, 'i': d', '└i', 'i+L', '−└i', 'd', 'i, 'sub': 3', 'itlv', '2, '(2/2┘+((/2┘)mod 2))=() \u2003\u2003[Equation 1]'}{'sub': 1', '2', 'itlv', '3, '(d( ) is the first ...

APPARATUS AND METHOD FOR ENCODING AND DECODING OF INTEGRATED SPEECH AND AUDIO UTILIZING A BAND EXPANDER TO OUTPUT THE AUDIO OR SPEECH TO A FREQUENCY DOMAIN ENCODER OR AN LPC ENCODER

Provided are an apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is a audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; and a bitstream generator to generate a bitstream using an output signal of the first conversion encoder and an output signal of the LPC encoder. 2. The method of claim 1 , wherein the expanding comprising:expanding a frequency band based on Spectral Band Replication (SBR).3. The method of claim 1 , wherein the time-domain encoding module encodes the core band of the input signal based on Linear Predictive Coding (LPC) scheme.4. The method of claim 1 , wherein the transform encoding module encodes the core band of the input signal based on a Modified Discrete Cosine Transform (MDCT) scheme.5. A decoding method for integrally decoding a speech signal and an audio signal claim 1 , executed by a computer claim 1 , the method comprising:determining a characteristic of a encoded input signal including in a bitstream whether an encoded input signal is an audio characteristic signal or a speech characteristic signaldecoding the encoded input signal based on the characteristic of the encoded input signal,wherein the encoding performs by switching the below decoding module according to characteristic of the input signal,(i) decoding a core band of the input signal based on a time-domain decoding module, when the encoded input signal is the speech characteristic signal, or(ii) decoding a core band of the input signal based on a transform decoding module, when the encoded input signal is the audio characteristic signal,wherein the core band includes ...

Method for transmitting and receiving data channel in communication system and apparatus for the same

Disclosed are methods and apparatuses for transmitting and receiving data channels in a communication system. An operation method of a terminal in a communication system may comprise receiving, from a base station, resource allocation information of a plurality of physical uplink shared channels (PUSCHs) used for repetitive transmission of a same transport block (TB); identifying a position of each of the plurality of PUSCHs in a time domain based on the resource allocation information; and repeatedly transmitting the same TB to the base station at the position of each of the plurality of PUSCHs. Therefore, performance of the communication system can be improved.

RADIO CHANNEL ACCESS METHOD AND APPARATUS

Disclosed are a base station and a channel access method performing a channel access in a unlicensed band. The channel access method includes: performing channel sensing at least once on a channel of the unlicensed band in a channel sensing period of a frame; and broadcasting a reservation signal for the channel when the channel is empty. 124-. (canceled)25. A channel access method of a base station for unlicensed band , comprising:performing channel sensing for transmitting data through the unlicensed band;determining whether a first carrier in the unlicensed band is occupied or empty based on the channel sensing result;broadcasting a signal for indicating carrier occupancy in case the first carrier is determined to be empty; andtransmitting the data to a user equipment using the first carrier after broadcasting the signal.26. The channel access method of claim 25 , further comprisingending the data transmission with the last subframe of the frame or a DwPTS duration which follows the frame.27. The channel access method of claim 26 , wherein the last subframe is 9subframe of the frame.28. The channel access method of claim 26 , wherein the last subframe is 3subframe of the frame.29. The channel access method of claim 26 , further comprising:simultaneously performing channel sensing for a plurality of carriers of the unlicensed band after the ending the data transmission; andresuming the data transmission to the UE using a second carrier in the unlicensed band.30. The channel access method of claim 29 , further comprisingtransmitting carrier indication of the second carrier to the UE through a licensed band.31. The channel access method of claim 25 , whereinthe performing of the channel sensing includes performing the channel sensing on the basis of an energy detection scheme.32. The channel access method of claim 26 , wherein the determining whether a first carrier in the unlicensed band is occupied or empty based on the channel sensing result includes:comparing a ...

OPERATION METHOD OF COMMUNICATION NODE FOR UPLINK TRANSMISSION IN COMMUNICATION NETWORK

An operation method of a terminal for uplink transmission in a communication network based on Internet of things (IoT) includes receiving a message including information on a resource pool for the uplink transmission from a base station included in the communication network; configuring an uplink resource for the uplink transmission based on the resource pool; transmitting a message including a transmission indicator indicating the uplink transmission to the base station based on a transmission indicator pool corresponding to the resource pool; and performing the uplink transmission through the uplink resource based on a plurality of parameters preconfigured for the uplink transmission. 1. An operation method of a terminal for uplink transmission in a communication network based on Internet of things (IoT) , the operation method comprising:receiving a message including information on a resource pool for the uplink transmission from a base station included in the communication network;configuring an uplink resource for the uplink transmission based on the resource pool;transmitting a message including a transmission indicator indicating the uplink transmission to the base station based on a transmission indicator pool corresponding to the resource pool; andperforming the uplink transmission through the uplink resource based on a plurality of parameters preconfigured for the uplink transmission.2. The operation method according to claim 1 , wherein the message including information on a resource pool is received from the base station through a radio resource control (RRC) signaling.3. The operation method according to claim 1 , wherein the resource pool includes time-frequency resources available for the uplink transmission of the terminal.4. The operation method according to claim 1 , wherein the plurality of parameters include a timing of the uplink transmission claim 1 , a transmission power of the uplink transmission claim 1 , a size of a payload of the uplink ...

COOPERATIVE MULTI-ANTENNA TRANSMITTING AND RECEIVING METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM, AND METHOD FOR CONFIGURING CLUSTER FOR THE SAME

A target terminal in a mobile communication system transmits a first uplink cooperative MIMO signal in a first uplink subframe to a cooperating device selected from among a plurality of repeaters for relaying signals and a plurality of terminals except a target terminal for cooperative MIMO transmission and reception, and transmits a second uplink cooperative MIMO signal directly in a second uplink subframe to a base station. The cooperating device amplifies the first uplink cooperative MIMO signal and transmits an amplified first uplink cooperative MIMO signal in the second uplink subframe to the a base station. 1. A cooperating cluster configuring method for a cooperative MIMO (Multiple-Input Multiple-Output) transmission and reception in a base station of a mobile communication system , the method comprising:selecting a plurality of candidate cooperating devices to cooperate for the cooperative MIMO transmission and reception from among a plurality of repeaters for relaying signals and a plurality of terminals except a target terminal for cooperative MIMO transmission and reception;selecting at least one cooperating device from among the plurality of candidate cooperating devices based on signal quality information measured between the plurality of candidate cooperating devices and the target terminal;generating a cooperating cluster including the at least one cooperating device; andtransmitting configuration information of the cooperating cluster to the target terminal.2. The method of claim 1 , wherein the selecting at least one cooperating device comprises selecting a candidate cooperating device having a signal quality value higher than a threshold voltage as the cooperating device claim 1 , based on a plurality of first signal quality values measured claim 1 , by the target terminal claim 1 , from discovery ranging signals sent from the plurality of candidate cooperating devices claim 1 , respectively.3. The method of claim 2 , wherein the selecting at least ...

METHOD AND APPARATUS FOR TRANSMITTING SIGNAL USING UNLICENSED BAND IN CELLUAR SYSTEM

A method and an apparatus for transmitting a resource, and a method for the HARQ retransmission using an unlicensed band include an operation of performing clear channel assessment (CCA) for the unlicensed band; and an operation of occupying a channel of the unlicensed band according to the CCA and determining whether or not the resource is transmitted based on a position of a transmission time interval (TTI) within a channel occupancy time (COT) for the channel. 1. A method for receiving a resource that measures a channel in an unlicensed band , the method comprising:receiving the resource in an occupied channel through clear channel assessment (CCA) for the unlicensed band; anddetermining whether or not a measurement is performed based on the resource.2. The method of claim 1 , wherein:whether or not the resource is transmitted is determined based on a position of a transmission time interval (TTI) within a channel occupancy time (COT) for the channel.3. The method of claim 1 , wherein:the determining of whether or not the measurement is performed includesmeasuring a state of the channel when the resource is a channel state information-reference signal (CSI-RS) resource.4. The method of claim 3 , wherein:the determining of whether or not the measurement is performed includesmeasuring interference from another system when the resource is a zero-power (ZP) CSI-RS resource of the CSI-RS resource.5. The method of claim 3 , wherein:the determining of whether or not the measurement is performed includesmeasuring a state of the channel when the resource is a non zero-power (NZP) CSI-RS resource of the CSI-RS resource.6. The method of claim 1 , wherein:the determining of whether or not the measurement is performed includesmeasuring interference for the channel when the resource is a channel state information-interference measurement (CSI-IM) resource.7. A base station comprising:at least one processor;a memory, anda radio frequency (RF) unit,wherein at least one processor ...

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING REFERENCE SIGNAL USING UNLICENSED BAND

There are provided a method and apparatus for transmitting a discovery reference signal (DRS) through transmitting the DRS to a user equipment through a channel of an unlicensed band, receiving measurement report for measurement performed based on the DRS from the user equipment, and scheduling the cell of the unlicensed band based on the measurement report and providing a service to the user equipment through the cell of the unlicensed band. 1. A method for transmitting a discovery reference signal (DRS) by a base station , the method comprising:transmitting the DRS to a user equipment through a channel of an unlicensed band;receiving measurement report for measurement performed based on the DRS from the user equipment; andscheduling a cell of the unlicensed band based on the measurement report and providing a service to the user equipment through the cell of the unlicensed band.2. The method of claim 1 , wherein:the measurement report includes measurement information of a physical layer between the base station and the user equipment or measurement information of a radio resource control (RRC) layer.3. The method of claim 1 , wherein:the transmitting of the DRS comprisesacquiring an access right to the channel of the unlicensed band, andwhen the access right is acquired, transmitting the DRS to the user equipment through the channel of the unlicensed band.4. The method of claim 3 , wherein:when the access right is acquired, transmitting the DRS to the user equipment through the channel of the unlicensed band further comprisestransmitting DRS indication including information about the DRS to the user equipment.5. The method of claim 3 , further comprising claim 3 ,prior to the transmitting of the DRS,indicating a time point for transmitting the DRS to the user equipment through a licensed band cell.6. The method of claim 1 , further comprising claim 1 ,prior to the transmitting of the DRS,transmitting DRS measurement timing configuration (DMTC) information as ...

Method for supporting beamforming in communication network

Disclosed are a method and an apparatus for performing communications based on multiple antennas in a communication network. An operation method performed in a multi-antenna performing beamforming in a communication network according to the present disclosure may comprise selecting a beamformer generating a transmission beam for transmitting data to a plurality of communication nodes included in the communication network among a plurality of beamformers included in the multi-antenna; selecting at least one antenna panel corresponding to each of the plurality of communication nodes among a plurality of antenna panels included in the selected beamformer; configuring parameters for respectively allocating independent transmission beams to the plurality of communication nodes based on the selected at least one antenna panel; and transmitting data to the plurality of communication nodes using transmission beams through the plurality of antenna panels based on the configured parameter.

COMMUNICATION METHOD AND APPARATUS USING MULTIPLE ANTENNAS IN WIRELESS COMMUNICATION SYSTEM

Disclosed are a communication method and a communication apparatus using multiple antennas in a wireless communication system. A communication method of a receiver comprises receiving reference signals from a transmitter of the communication system through beams to which the hybrid beamforming is applied; selecting at least one analog beam having a quality equal to or higher than a preset threshold value among analog beams belonging to the beams, based on the reference signals; and selecting at least one digital beam corresponding to the at least one analog beam and having a quality equal to or higher than the preset threshold value among digital beams belonging to the beams, based on the reference signals. Thus, performance of the communication system can be improved. 1. A communication method based on hybrid beamforming , performed in a receiver of a communication system , the communication method comprising:receiving reference signals from a transmitter of the communication system through beams to which the hybrid beamforming is applied;selecting at least one analog beam having a quality equal to or higher than a preset threshold value among analog beams belonging to the beams, based on the reference signals;selecting at least one digital beam corresponding to the at least one analog beam and having a quality equal to or higher than the preset threshold value among digital beams belonging to the beams, based on the reference signals; andtransmitting information indicating at least one of the at least one analog beam and the at least one digital beam to the transmitter.2. The communication method according to claim 1 , wherein the selecting at least one analog beam further comprises:selecting at least one horizontal analog beam having a quality equal to or higher than the preset threshold value among horizontal analog beams belonging to the analog beams; andselecting at least one vertical analog beam having a quality equal to or higher than the preset threshold ...

COMMUNICATION METHOD USING WAVEFORM ROBUST TO FREQUENCY DISPERSION IN COMMUNICATION SYSTEM AND APPARATUS FOR THE SAME

An operation method of a first communication node in a communication system may comprise generating a codeword by performing coding on a data stream; generating modulation symbols by performing modulation on the codeword; performing DFT on N modulation symbols among the modulation symbols by using a plurality of DFT units; mapping output symbols of each of the plurality of DFT units to a resource; and performing IFFT on the output symbols mapped to the resource by using an IFFT unit. 1. An operation method of a first communication node in a communication system , the operation method comprising:generating a codeword by performing coding on a data stream;generating modulation symbols by performing modulation on the codeword;performing discrete Fourier transform (DFT) on N modulation symbols among the modulation symbols by using a plurality of DFT units;mapping output symbols of each of the plurality of DFT units to a resource; andperforming inverse fast Fourier transform (IFFT) on the output symbols mapped to the resource by using an IFFT unit,wherein N is a positive integer.2. The operation method according to claim 1 , wherein the N modulation symbols are spread in a frequency axis by the plurality of DFT units claim 1 , and the spreading by the plurality of DFT units is performed in units of one or more resource blocks.3. The operation method according to claim 1 , wherein each of the plurality of DFT units is an N-point DFT unit.4. The operation method according to claim 3 , wherein the IFFT unit is an M-point IFFT unit claim 3 , M is 2 claim 3 , N is 2 claim 3 , L is less than or equal to K claim 3 , and each of M claim 3 , K and L is a positive integer.5. The operation method according to claim 4 , wherein L is configured by a second communication node claim 4 , and a signaling message indicating L is received from the second communication node.6. The operation method according to claim 1 , wherein the N output symbols of each of the plurality of DFT units are ...

OPERATION METHOD OF COMMUNICATION NODE IN COMMUNICATION NETWORK

An operation method of a first communication node in a communication network, which supports a radio link control (RLC) function among functions of a base station, may comprise receiving a first message from a second communication node supporting a packet data convergence protocol (PDCP) function among the functions of the base station; processing the received first message by performing the RLC function; and transmitting the processed first message to a third communication node supporting a medium access control (MAC) function and physical (PHY) functions among the functions of the base station. 1. An operation method of a first communication node in a communication network , which supports a radio link control (RLC) function among functions of a base station , the operation method comprising:receiving a first message from a second communication node supporting a packet data convergence protocol (PDCP) function among the functions of the base station;processing the received first message by performing the RLC function; andtransmitting the processed first message to a third communication node supporting a medium access control (MAC) function and physical (PHY) functions among the functions of the base station.2. The operation method according to claim 1 , further comprising claim 1 , when the first communication node supports the RLC function and further supports the MAC function among the functions of the base station claim 1 ,receiving a second message from the second communication node;processing the received second message by performing the RLC function and the MAC function; andtransmitting the processed second message to a fourth node supporting the PHY functions among the functions of the base station.3. The operation method according to claim 1 , further comprising claim 1 , when the first communication node supports the RLC function and the MAC function among the functions of the base station and further supports at least one of the PHY functions among the ...

METHOD FOR CONFIGURING DUAL CONNECTIVITY

Disclosed is a method for configuring dual connectivity. A method for configuring dual connectivity, performed in a base station, may comprise receiving measurement information about a neighbor cell of the terminal from the terminal; obtaining information for configuring dual connectivity from the terminal or the base station; determining whether to configure dual connectivity based on the measurement information and the information for configuring dual connectivity; and when the dual connectivity is to be configured, transmitting a message instructing to configure the dual connectivity to the terminal. 1. A method for configuring dual connectivity , performed in a base station , the method comprising:receiving measurement information about a neighbor cell of a terminal from a terminal;obtaining information for configuring dual connectivity from the terminal or the base station;determining whether to configure dual connectivity or not based on the measurement information and the information for configuring dual connectivity; andif the dual connectivity is to be configured, transmitting a message instructing to configure the dual connectivity to the terminal.2. The method of claim 1 , wherein the information for configuring dual connectivity includes at least one of buffer status information of the terminal or the macro base station claim 1 , service quality information of at least one bearer claim 1 , movement speed information of the terminal claim 1 , information about signal strength of the macro cell or the small cell.3. The method of claim 1 , wherein claim 1 , in the determining whether to configure dual connectivity claim 1 , the terminal connects to both a macro cell and a small cell when a movement speed of the terminal belongs to a predetermined reference speed range claim 1 , and the terminal connects to only the macro cell when the movement speed of the terminal is higher than the predetermined reference speed range claim 1 , and the terminal connects to ...

METHOD AND APPARATUS FOR TRANSMITTING ADAPTIVE PARTIAL SUBFRAME IN UNLICENSED FREQUENCY BAND, METHOD AND APPARATUS FOR IDENTIFYING A FRAME STRUCTURE, AND METHOD AND APPARATUS FOR TRANSMITTING SIGNAL

There is provided a method for transmitting, by a transmitter, a signal through an unlicensed band channel. The transmitter transmits an initial signal through the unlicensed band channel to preoccupy the unlicensed band channel when the unlicensed band channel is in an idle status. The transmitter includes a first partial subframe transmitted after the initial signal in a frame burst depending to transmission timing of the initial signal. Further, the transmitter transmits the frame burst through the unlicensed band channel. 1. A transmission method for a transmitter , the method comprising:performing channel sensing for occupying an unlicensed band; andafter the unlicensed band is determined to be idle as a result of the channel sensing, transmitting first configuration information through a control channel included in a first unit duration and transmitting data through a data channel included in the first unit duration,wherein the first configuration information indicates a number of symbols occupied in a next unit duration following the first unit duration.2. The method of claim 1 , further comprising:transmitting second configuration information through a control channel included in the next unit duration and transmitting data through a data channel included in the next unit duration, wherein the second configuration information indicates a number of symbols occupied in the next unit duration.3. The method of claim 1 , further comprising:transmitting second configuration information through a control channel included in the next unit duration and transmitting data through a data channel included in the next unit duration, wherein the second configuration information indicates a number of symbols occupied in a unit duration following the next unit duration.4. The method of claim 1 , wherein the first configuration information consists of 4 bits.5. The method of claim 1 , further comprising:transmitting a reservation signal for preventing other devices from ...

Resource allocating method in wireless network and wireless communication device using the same

A resource allocating method in a wireless network performed by a first device positioned in a wireless communication network and connected to one or more second devices to constitute a fully connected link includes receiving network information from the wireless communication network, receiving information about a transmission scheme to be used for communication between the first device and the second device from the network information, obtaining information about the second device and an index of the first device, and allocating resources to be used for a communication between the first device and the one or more second devices using information related to at least one of the transmission scheme, the information about the second device, and the index of the first device.

Method and apparatus for allocating uplink resources

A method and an apparatus for allocating uplink resources includes transmitting an uplink grant (UL Grant) for an unlicensed component carrier (UCC) to a plurality of terminals, wherein the UL Grant for a first terminal among the plurality of terminals includes a resource allocation information in which a transmission timing of the uplink data of a second terminal among the plurality of terminals is considered.

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SYSTEM INFORMATION IN MOBILE COMMUNICATION SYSTEM

A method and apparatus of receiving system information of an SeNB, including configuring connection to an MeNB and receiving a RRC Connection Reconfiguration message including the system information of a cell included in a SCG controlled by the SeNB, and a method of sharing frame offset between a MCG controlled by an MeNB and an SCG controlled by an SeNB connected to the MeNB through non-ideal backhaul, including measuring system frame number (SFN) and subframe number (SN) of a cell included in the SCG and sharing the frame offset, which is determined based on the SFN and the SN, with the MeNB or the SeNB are provided. 1. A method of receiving , by a terminal , system information of a secondary eNodeB (SeNB) , the method comprising:configuring connection to a master eNodeB (MeNB); andreceiving a radio resource control (RRC) Connection Reconfiguration message including the system information of a cell included in a secondary cell group (SCG) controlled by the SeNB.2. The method of claim 1 , wherein the message is the message received from the MeNB after the MeNB decides modification for at least one cell included in the SCG.3. The method of claim 1 , wherein the message is the message delivered to the MeNB after the SeNB decides update of the system information.4. The method of claim 1 , wherein the RRC Connection Reconfiguration message includes information of point of time at which the system information used.5. The method of claim 4 , further comprising:performing an addition procedure for the cell included in the SCG based on the system information; andtransmitting RRC Connection Reconfiguration Complete message to the MeNB.6. The method of claim 5 , wherein the performing comprises applying the system information based on the point of time at which the system information used.7. A method of sharing claim 5 , by a terminal claim 5 , frame offset between a master cell group (MCG) controlled by a master eNodeB (MeNB) and a secondary cell group (SCG) controlled by a ...

METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING DISCOVERY REFERENCE SIGNAL THROUGH CHANNEL OF UNLICENSED FREQUENCY BAND

Disclosed is a method for a base station to transmit a discovery reference signal (DRS) through a channel of an unlicensed band. The base station attempts a first access to the channel of the unlicensed band so as to transmit a first DRS in a first DRS measurement timing configuration (DMTC) period. When the first access fails, the base station attempts a second access to the channel of the unlicensed band with a shorter predetermined period than the first DMTC period so as to transmit a second DRS in the first DMTC period. 1. A method for a base station to transmit a discovery reference signal (DRS) through a channel of an unlicensed band , the method comprising:attempting a first access to the channel of the unlicensed band so as to transmit a first DRS in a first DRS measurement timing configuration (DMTC) period; andwhen the first access fails, attempting a second access to the channel of the unlicensed band with a predetermined period that is shorter than the first DMTC period so as to transmit a second DRS in the first DMTC period.2. The method of claim 1 , whereinthe predetermined period represents a period for transmitting a synchronization signal in a licensed band, andthe attempting of a second access includesattempting the second access with the predetermined period until a transmission of the second DRS is successful in the first DMTC period.3. The method of claim 2 , whereinthe synchronization signal includes at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), andthe predetermined period is 5 ms.4. The method of claim 2 , further comprisingwhen the second access is successful, multiplexing the second DRS and a physical downlink shared channel (PDSCH) and transmitting the same.5. The method of claim 2 , further comprisingwhen the second access is successful, transmitting a synchronization signal included in the second DRS from a same resource element as a resource element for transmitting the ...

METHOD OF REESTABLISHING RADIO LINK AND WIRELESS COMMUNICATION DEVICE USING THE METHOD

A method of reestablishing a radio link which is performed by a wireless communication device that communicates with a peer node includes monitoring quality of a radio link used for communication with the peer node, determining whether radio link reestablishment is needed when the quality of the radio link is less than or equal to a reference value, determining a beam search parameter using at least one of information on the activation status of the radio link and mobility information of the peer node, performing a beam search necessary for radio link reestablishment according to the beam search parameter, and reestablishing a radio link with the peer node using a found beam. 1. A method of reestablishing a radio link which is performed by a wireless communication device that communicates with a peer node , the method comprising:monitoring quality of a radio link used for communication with the peer node;determining whether radio link reestablishment is needed when the quality of the radio link is less than or equal to a reference value;determining a beam search parameter using at least one of information on the activation status of the radio link and mobility information of the peer node;performing a beam search necessary for radio link reestablishment according to the beam search parameter; andreestablishing a radio link with the peer node using a found beam.2. The method of claim 1 , wherein the beam search parameter includes at least one of a direction of a beam from which to start a search claim 1 , a step size of a search claim 1 , and a search proceeding direction.3. The method of claim 2 , wherein the direction of the beam from which to start a search is an index of a beam from which a search starts among all beams of the wireless communication device.4. The method of claim 2 , wherein the direction of the beam from which to start a search is determined using at least one of the information on the activation status of the radio link claim 2 , the mobility of ...

Apparatus and method for encoding and decoding of integrated speech and audio

Provided are an apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is a audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; and a bitstream generator to generate a bitstream using an output signal of the first conversion encoder and an output signal of the LPC encoder.

METHOD AND APPARATUS FOR CONFIGURING PATH IN COMMUNICATION SYSTEM INCLUDING XHAUL NETWORK

Disclosed are a method and an apparatus for configuring a path in a communication system including an Xhaul network. A method for changing a path, performed by a first XDU, may comprise receiving from the XCU a path setup request message requesting to change a first path between the second XDU and the third XDU to a second path between the first XDU and the third XDU; receiving an SN status transfer message including an SN of data for the third XDU from the second XDU belonging to the first path, when the path setup request message is received; receiving from the second XDU the data corresponding to the SN indicated by the SN status transfer message; configuring the second path with the third XDU; and transmitting the data received from the second XDU to the third XDU through the second path. 1. A method for changing a path , performed by a first Xhaul distributed unit (XDU) in an Xhaul network including the first XDU , a second XDU , a third XDU , and an Xhaul centralized unit (XCU) , the method comprising:receiving from the XCU a path setup request message requesting to change a first path between the second XDU and the third XDU to a second path between the first XDU and the third XDU;receiving a sequence number (SN) status transfer message including an SN of data for the third XDU from the second XDU belonging to the first path, when the path setup request message is received;receiving from the second XDU data corresponding to the SN indicated by the SN status transfer message;configuring the second path with the third XDU; andtransmitting the data received from the second XDU to the third XDU through the second path.2. The method according to claim 1 , wherein the path setup request message includes identifiers of XDUs constituting the second path.3. The method according to claim 1 , wherein the SN status transfer message is transmitted and received based on a flow identifier (ID) without control of the XCU.4. The method according to claim 1 , wherein the SN ...

Method and apparatus for ultra reliable and low latency communication

An operation method of a terminal may comprise receiving, from a base station, information of target transmission points targeted for a report of first channel state information (CSI) among the plurality of transmission points; receiving a first CSI-reference signal (CSI-RS) from the target transmission points; transmitting the first CSI determined based on the first CSI-RS to the base station; receiving, from the base station, information on a first transmission point determined based on the first CSI; receiving, from the first transmission point indicated by the information on the first transmission point, a second CSI-RS; receiving, from the base station, information on a requirement; and transmitting, to the base station, a second CSI including a transmission parameter for achieving the requirement.

APPARATUS FOR ENCODING AND DECODING OF INTEGRATED SPEECH AND AUDIO

Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate ; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream. 1. An encoding method of an input signal performed by at least one processor , the encoding method comprising:determining a frame of the input signal whether the frame is a speech frame or an audio frame;encoding the input signal in a speech encoder based CELP coding scheme when the frame is the speech frame, andencoding the input signal in an audio encoder based MDCT coding scheme when the frame is the audio frame; andwherein the input signal is processed by using information for compensating a change of a frame unit between the speech frame and the audio frame when a switching occurs between the speech frame and the audio frame in a decoding process about the input signal.2. The encoding method of claim 1 , wherein the input signal is encoded with respect to a core band claim 1 ,wherein the core band is a low frequency band which is not expanded in a frequency band of the input signal,wherein a high frequency band is generated from the core band based on a frequency band expander in a decoding process.3. The encoding method of claim 1 , further comprising:generating information for generating the high frequency band;wherein the bitstream includes the generated information.4. ...

Method and apparatus for transmitting and receiving signal in communication system

A method and apparatus for transmitting and receiving signal in communication system. A method of a base station includes: configuring frequency spreading sequences each of which corresponds to a transmission starting time point; configuring time spreading sequences each of which corresponds to a terminal; and transmitting information on the frequency spreading sequences and the time spreading sequences to a plurality of terminals, wherein one of the frequency spreading sequences and one of the time spreading sequences are assigned to each of the plurality of terminals.

METHOD AND APPARATUS FOR ALLOCATING UPLINK RESOURCES

A method and an apparatus for allocating uplink resources includes transmitting an uplink grant (UL Grant) for an unlicensed component carrier (UCC) to a plurality of terminals, wherein the UL Grant for a first terminal among the plurality of terminals includes a resource allocation information in which a transmission timing of the uplink data of a second terminal among the plurality of terminals is considered. 1. A method for transmitting a physical uplink shared channel (PUSCH) by a terminal , the method comprising:receiving an uplink resource information from a base station for an unlicensed band; andtransmitting the PUSCH by using a partial unit duration belonging to an uplink resource of the unlicensed band corresponding to the uplink resource information, the partial unit duration including fewer symbols than a full unit duration,wherein the uplink resource information indicates an ending symbol of the partial unit duration carrying the PUSCH.2. The method of claim 1 , further comprising: transmitting a special signal for preventing other devices from occupying the unlicensed band before the PUSCH is transmitted when the unlicensed band is occupied by the terminal.3. The method of claim 1 , further comprising:performing a clear channel assessment (CCA) after receiving an uplink grant, wherein the uplink grant includes the uplink resource information; andtransmitting the PUSCH when the unlicensed band is occupied after the CCA.4. The method of claim 3 , wherein the performing of the CCA includes: selecting a symbol for the CCA from among a plurality of symbols in unit duration; and performing the CCA at the selected symbol claim 3 , wherein the selected symbol is located before the partial unit duration.5. The method of claim 1 , wherein the ending symbol of the partial unit duration is a last symbol of a first slot of the partial unit duration.6. The method of claim 1 , wherein: the partial unit duration includes resources of a demodulation reference signal ( ...

SUN VISOR FOR AUTOMOBILES

A sun visor for automobiles that makes operation smooth and minimizes a reaction force, the sun visor includes a sun visor body including a supporter receiver (Rs) having both side walls, a top surface and a bottom surface; a shaft horizontally disposed in the supporter receiver through one side wall; and a supporter received in the supporter receiver (Rs) of the sun visor body, and rotatably supported by shaft support holes, to which the shaft is inserted, while horizontal movement of the supporter is limited, in which upper and lower portions of front and rear surfaces of the supporter are provided with upper support curved surfaces and lower support curved surfaces in a longitudinal direction which are opposite to each other. 1. A sun visor for automobiles comprising:{'b': 20', '22', '22', '22', '22, 'i': a', 'b', 'c', 'd, 'a sun visor body () including a supporter receiver (Rs) having both side walls (and ), a top surface () and a bottom surface ();'}{'b': 10', '22', '12, 'i': 'a', 'a shaft () horizontally disposed in the supporter receiver through one side wall (), and supported by a vertical support end () to be able to rotate in a horizontal direction; and'}{'b': 30', '20', '32', '32', '10, 'i': a', 'b, 'a supporter () received in the supporter receiver (Rs) of the sun visor body (), and rotatably supported by shaft support holes (and ), to which the shaft () is inserted, while horizontal movement of the supporter is limited,'}{'b': 30', '34', '34', '36', '36, 'i': a', 'b', 'a', 'b, 'in which upper and lower portions of front and rear surfaces of the supporter () are provided with upper support curved surfaces (and ) and lower support curved surfaces (and ) in a longitudinal direction which are opposite to each other, the respective curved surfaces having a first radius of curvature, and'}{'b': 24', '24', '26', '26', '34', '34', '36', '36', '34', '34', '36', '36, 'i': a', 'b', 'a', 'b', 'a', 'b', 'a', 'b', 'a', 'b', 'a', 'b, 'an inner surface of the sun visor ...

APPARATUS FOR ENCODING AND DECODING OF INTEGRATED SPEECH AND AUDIO

Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream. 1. An encoding method of an input signal performed by at least one processor , the encoding method comprising:determining a frame of the input signal whether the frame is a speech frame or an audio frame;encoding the core band of the input signal in a speech encoder based CELP coding scheme when the frame is the speech frame, andencoding the core band of the input signal in an audio encoder based MDCT coding scheme when the frame is the audio frame; andgenerating a bitstream including the encoded core band of the input signal,wherein the core band is a low frequency band which is not expanded in a frequency band of the input signal,wherein a high frequency band is generated from the core band based on a frequency band expander in a decoding process, andwherein the input signal is processed by using information for compensating a change of a frame unit between the speech frame and the audio frame when a switching occurs between the speech frame and the audio frame in a decoding process about the input signal.2. The encoding method of claim 1 , further comprising:generating information for generating the high frequency band;wherein the bitstream includes the generated information ...

METHOD AND APPARATUS FOR MANAGING ALLOCATION AND USAGE OF RADIO RESOURCE, METHOD AND APPARATUS FOR TRANSMITTING DATA THROUGH UNLICENSED BAND CHANNEL, AND METHOD AND APPARATUS FOR MANAGING ACCESS OF RADIO RESOURCE

Provided is a method for transmitting, by a transmitter, a first data having periodicity through a channel of an unlicensed band: 1. A method for transmitting data through an unlicensed channel by a terminal , comprising:receiving uplink resource allocation information allocating first unit duration for the terminal to transmit the data;performing first channel access before the first unit duration based on the uplink resource allocation information;performing second channel access before next unit duration based on the uplink resource allocation information when the first channel access fails and the data have not been transmitted in the first unit duration; andtransmitting the data in the next unit duration when the unlicensed channel is occupied by the second channel access,wherein both the first unit duration and the next unit duration following the first unit duration are included in a channel occupation time.2. A method for transmitting data through an unlicensed channel by a terminal , comprising:receiving first uplink resource allocation information to transmit first data;receiving second uplink resource allocation information to transmit second data;performing first channel access for the unlicensed channel to transmit the first data based on the first uplink resource allocation information; andtransmitting the first data and the second data if the unlicensed channel is occupied after the first channel access or transmitting the second data if the unlicensed channel is not occupied after the first channel access and the unlicensed channel is occupied after a second channel access based on the second uplink resource allocation information. This application is a continuation application of U.S. patent application Ser. No. 14/865,968, filed on Sep. 25, 2015, and claims priority to and the benefit of Korean Patent Application Nos. 10-2014-0129443, 10-2014-0129445, 10-2014-0154777, 10-2014-0154778, 10-2015-0015556, 10-2015-0015553, 10-2015-0036914, 10-2015- ...

APPARATUS AND METHOD FOR ENCODING AND DECODING OF INTEGRATED SPEECH AND AUDIO

Provided are an apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is a audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; and a bitstream generator to generate a bitstream using an output. 1. A method for encoding an input signal executed by a computer , the method comprising:identifying a characteristic of the input signal whether the input signal has an audio characteristic or a speech characteristicencoding the input signal based on the characteristic, using either a first encoder based on a time-domain coding scheme or a second encoder based on a transform-coding scheme,generating information for expanding the input signal to a high frequency band signal, wherein a frequency band of the input signal is to be expanded using the information in a decoding process for the input signal,generating a bitstream including an encoding result of the input signal,wherein the input signal is transmitted to the first encoder or the second encoder according to the characteristic of the input signal being the audio characteristic or the speech characteristic.2. The method of claim 1 , wherein the encoding comprising:encoding a core band of the input signal,wherein the core band is frequency band which is not to be expanded in the input signal.3. The method of claim 1 , wherein the encoding comprising:encoding the input signal using the first encoder, when the characteristic of the input signal has the speech characteristic, orencoding the input signal using the second encoder, when the characteristic of the input signal has the audio characteristic.4. The method of claim 1 ...

Apparatus and method for encoding and decoding of integrated speech and audio

Wireless channel access method and device

Apparatus and method for encoding and decoding of integrated speech and audio utilizing a band expander with a spectral band replication to output the audio or speech to a frequency domain encoder or an LPC encoder

An apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is a audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; a frequency band expander with the spectral band replication (SBR) standard for expanding the frequency band of the input signal whose output is transmitted to either the first conversion encoder or the LPC encoder based on the input characteristic; and a bitstream generator to generate a bitstream using an output signal of the first conversion encoder and an output signal of the LPC encoder.

Communication method and apparatus using multiple antennas in wireless communication system

Disclosed are a communication method and a communication apparatus using multiple antennas in a wireless communication system. A communication method of a receiver comprises receiving reference signals from a transmitter of the communication system through beams to which the hybrid beamforming is applied; selecting at least one analog beam having a quality equal to or higher than a preset threshold value among analog beams belonging to the beams, based on the reference signals; and selecting at least one digital beam corresponding to the at least one analog beam and having a quality equal to or higher than the preset threshold value among digital beams belonging to the beams, based on the reference signals. Thus, performance of the communication system can be improved.

System and method for transmitting system information in base station of wireless communication system

A system and method for transmitting system information in a base station of a wireless communication system are provided, The system information is generated by selectively inserting scheduling blocks containing scheduling information for scheduling units into a master information block and a first scheduling unit of a system information block. A maximum amount of information is inserted into the master information block to be transmitted on a system information dedicated channel, such that an amount of information of the system information block to be transmitted on a shared channel can be reduced and the load on the shared channel for system information transmission can be reduced.

Method of transmitting data in handover between base stations in wireless communication system

The present invention relates to a method of transmitting data in a handover between base stations. When a mobile terminal performs a handover between base stations in a wireless communication system, a gateway transmits data traffic to be transmitted to a mobile terminal by using an IGMP (Internet Group Management Protocol) to a serving base station being serviced to the mobile terminal and a target base station to which a handover of the mobile terminal is made in a bi-casting method. Accordingly, when the mobile terminal performs the handover between the base stations, the gateway transmits the data traffic in the bi-casting method. As a result, it is possible to efficiently use a resource of a user plane connection interval between the gateway and the base station, thereby minimizing the loss of data traffic transmitted in a downlink, that is, data.

Method and apparatus for uplink transmission in communication system

A method and an apparatus for uplink transmission in a communication system. An operation method of a terminal includes: receiving, from a base station, first SFI information indicating n flexible symbol(s); receiving, from the base station, second SFI information re-indicating m symbol(s) of the n flexible symbol(s) as uplink (UL) symbol(s); and transmitting an SRS to the base station through the m symbol(s) re-indicated as a UL symbol among the n flexible symbol(s) indicated as a flexible symbol. Therefore, performance of the communication system can be improved.

Operation method of communication node supporting mobility in communication network

An operation method of a first communication node, which controls a plurality of communication nodes included in a mobile xhaul network supporting mobility, may comprise performing an attach procedure between the first communication node and a second communication node among the plurality of communication nodes; configuring a path for communications between the second communication node and a third communication node for which attach procedure has been completed among the plurality of communication nodes; and supporting communications of the second communication node and the third communication node using the configured path.

Method for transmitting data or control information having high reliability conditions, and device therefor

Disclosed are various methods for transmitting or receiving data or control information having high reliability conditions. A method for operating a terminal which transmits uplink control information (UCI) includes: a step of generating UCI; a step of comparing the priority of an uplink (UL) control channel for the transmission of the UCI with the priority of a UL data channel when some symbols of the UL control channel and the UL data channel overlap; and a step of selecting the UL channel having a higher priority among the UL control channel and the UL data channel, and transmitting the UCI to a base station through the selected UL channel.

Control method of handover traffic service in multi-cell environment and control apparatus thereof

Control method of handover traffic service in multi-cell environment and control apparatus thereof

The present invention relates to a control method of handover traffic services in a multi-cell environment and a controller thereof. According to the exemplary embodiment of the present invention, a priority for selecting a cell on request for the handover traffic service is determined by considering user preferences and status of neighboring cells, and an optimized cell is determined according to the determined priority. The priority is readjusted to select a second optimized cell when the optimized cell is not selected. That is, quality of service (QoS) is improved by preferentially performing the handover and selecting communication system with various characteristics according to the user preferences in the multi-cell environment.

Control method of handover traffic service in multi-cell environment and control apparatus thereof

The present invention relates to a control method of handover traffic services in a multi-cell environment and a controller thereof. According to the exemplary embodiment of the present invention, a priority for selecting a cell on request for the handover traffic service is determined by considering user preferences and status of neighboring cells, and an optimized cell is determined according to the determined priority. The priority is readjusted to select a second optimized cell when the optimized cell is not selected. That is, quality of service (QoS) is improved by preferentially performing the handover and selecting communication system with various characteristics according to the user preferences in the multi-cell environment.

Control method of handover traffic service in multi-cell environment and control apparatus thereof

Method for discovering and selecting relay user equipment in communication system

An operation method performed by a remote terminal in a communication system includes: receiving a discovery signal from each of one or more neighboring terminals; performing a measurement operation on the discovery signal; determining at least one candidate terminal from among the one or more neighboring terminals based on a result of the measurement operation; selecting a relay terminal within the at least one candidate terminal; and performing a sidelink setup procedure with the relay terminal.

Method and apparatus for providing communication in high-speed train environment

An operation method of a terminal including a first relay and a second relay, in a communication system, may include: measuring, by the first relay, a first received signal quality of a first base station connected to the first relay; measuring, by the second relay, a second received signal quality of a second base station connected to the second relay; transmitting, by the first relay, a first PDU to the first base station based on the first received signal quality and the second received signal quality through a first bearer established in the first relay; and transmitting, by the second relay, a second PDU to the second base station based on the first received signal quality and the second received signal quality through a second bearer established in the second relay.

Apparatus for encoding and decoding of integrated speech and audio

Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.

Method and apparatus for uplink transmission in communication system

Disclosed are a method and an apparatus for uplink transmission in a communication system. An operation method of a terminal includes: receiving, from a base station, first SFI information indicating n flexible symbol(s); receiving, from the base station, second SFI information re-indicating m symbol(s) of the n flexible symbol(s) as uplink (UL) symbol(s); and transmitting an SRS to the base station through the m symbol(s) re-indicated as a UL symbol among the n flexible symbol(s) indicated as a flexible symbol. Therefore, performance of the communication system can be improved.

Resource allocating method in wireless network and wireless communication device using the same

A resource allocating method in a wireless network performed by a first device positioned in a wireless communication network and connected to one or more second devices to constitute a fully connected link includes receiving network information from the wireless communication network, receiving information about a transmission scheme to be used for communication between the first device and the second device from the network information, obtaining information about the second device and an index of the first device, and allocating resources to be used for a communication between the first device and the one or more second devices using information related to at least one of the transmission scheme, the information about the second device, and the index of the first device.

Method for transmitting and receiving data channel in communication system and apparatus for the same

Disclosed are methods and apparatuses for transmitting and receiving data channels in a communication system. An operation method of a terminal in a communication system may comprise receiving, from a base station, resource allocation information of a plurality of physical uplink shared channels (PUSCHs) used for repetitive transmission of a same transport block (TB); identifying a position of each of the plurality of PUSCHs in a time domain based on the resource allocation information; and repeatedly transmitting the same TB to the base station at the position of each of the plurality of PUSCHs. Therefore, performance of the communication system can be improved.

Method of reestablishing radio link and wireless communication device using the method

A method of reestablishing a radio link which is performed by a wireless communication device that communicates with a peer node includes monitoring quality of a radio link used for communication with the peer node, determining whether radio link reestablishment is needed when the quality of the radio link is less than or equal to a reference value, determining a beam search parameter using at least one of information on the activation status of the radio link and mobility information of the peer node, performing a beam search necessary for radio link reestablishment according to the beam search parameter, and reestablishing a radio link with the peer node using a found beam.

Method and apparatus for ultra reliable and low latency communication

An operation method of a terminal may comprise receiving, from a base station, information of target transmission points targeted for a report of first channel state information (CSI) among the plurality of transmission points; receiving a first CSI-reference signal (CSI-RS) from the target transmission points; transmitting the first CSI determined based on the first CSI-RS to the base station; receiving, from the base station, information on a first transmission point determined based on the first CSI; receiving, from the first transmission point indicated by the information on the first transmission point, a second CSI-RS; receiving, from the base station, information on a requirement; and transmitting, to the base station, a second CSI including a transmission parameter for achieving the requirement.

Verfahren zur Bestimmung des Hysteresebereichs, Übergabeauslöseverfahren und mobile Station zur Durchführung dieses Verfahrens

Verfahren zur bestimmung des hysteresebereichs, übergabeauslöseverfahren und mobile station zur durchführung dieses verfahrens

Method and apparatus for traffic routing in communication system

An operation method of a boundary IAB node between a first topology and a second topology in a communication system may include: receiving, from a first IAB donor node included in the first topology, a first address of a first node included in the second topology; receiving, from a node connected to the boundary IAB node, data including a relay request using a second address as a destination address; rewriting the destination address of the data with the first address indicated by the second address in a mapping table; and routing the data towards the first node.

異種無線通信システムにおけるアクセスシステム選択方法および装置

【課題】異種のアクセスシステムにおいて、最適アクセスシステムを選択する方法および装置を提供する。 【解決手段】複数のアクセスシステムが連動する環境にて、同種および／または異種のアクセスシステムに接続するユーザ装置（ＵＥ）。ＵＥは、アクセスシステムに該当するモジュールを活性化させてアクセスシステムに接続しサービスを提供するアクセスシステム特定モジュールと、ＣＰＣサーバから無線ネットワークに配置された各アクセスシステムの情報と各アクセスシステム各々の周波数割当情報および負荷の程度を受信するＣＰＣ特定モジュールと、アクセスシステムの１つと通信するためにアクセスシステム特定モジュールが再構成されるように制御する再構成マネージャと、現在接続されサービスされるアクセスシステムで測定されるＱｏｓを観測し、当該Ｑｏｓが予め決定された閾値以下になる場合、該当サービスのための最適アクセスシステムを検索後、選択する制御部を備える。 【選択図】図１

高速フーリエ変換プロセッサと、これを用いた高速フーリエ変換方法及びこれを有する直交周波数分割多重変調（ｏｆｄｍ）方式の受信装置

【課題】 データの出力遅延と電力消費が減少され、さらにハードウェアの複雑化を減少させることができる高速フーリエ変換プロセッサを提供する。 【解決手段】 メモリバンクとラディックス(radix)−２ＦＦＴ部を有する信号変換部はロングプリアンブルとデータを有するＯＦＤＭ信号を周波数領域のＯＦＤＭ信号に変換し出力する。ラディックス−２ＦＦＴ部はパイプライン構造を有し、メモリバンクに貯蔵されたロングプリアンブルをＦＦＴ変換してメモリバンクに貯蔵し、さらにバッファリングされて入力されるデータとダイレクト入力データに対してＦＦＴ変換し、ＦＦＴ変換されたデータをメモリバンクに貯蔵する。メモリバンクは４個のメモリを含み、ＦＦＴ変換前と後のロングプリアンブルを各々貯蔵し、ＦＦＴ変換されたデータが入力されるにつれて、貯蔵されたロングプリアンブル又はＦＦＴ変換されたデータを復調のために出力する。 【選択図】 図３

Method and apparatus for ultra reliable and low latency communication

An operation method of a terminal may comprise receiving, from a base station, information of target transmission points targeted for a report of first channel state information (CSI) among the plurality of transmission points; receiving a first CSI-reference signal (CSI-RS) from the target transmission points; transmitting the first CSI determined based on the first CSI-RS to the base station; receiving, from the base station, information on a first transmission point determined based on the first CSI; receiving, from the first transmission point indicated by the information on the first transmission point, a second CSI-RS; receiving, from the base station, information on a requirement; and transmitting, to the base station, a second CSI including a transmission parameter for achieving the requirement.