Electronics and Telecommunications Research Institute

Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Cheul Soon Kim

Sung Hyun Moon

Jung Hoon Lee

Ju Ho Park

Jun Hwan Lee

Min Hyun Kim

Jae Heung Kim

Ji Hyung Kim

Gi Yoon Park

Seung Kwon Baek

Ok Sun Park

Young Jo Ko

Choong Il Yeh

Tae Joong Kim

Jae Su Song

Ji Hung Kim

Sung Cheol Chang

Young-Jo Ko

Kyoung Seok Lee

Jung Bin Kim

Il Gyu Kim

Jae Young Ahn

Yong Sun Kim

Hyun Ho Choi

Kapseok Chang

Chang Yong Shin

Won Jae Shin

Yong Hoon Lee

Won Jong Noh

Chan Ho Yoon

Woo Ram Shin

Young Chul Sung

Joon Woo Shin

An operation method of a first terminal in a communication system may include: receiving, from a base station, configuration information including information of n periodicities; selecting one or more periodicities among the n periodicities; performing a partial sensing operation by using the one or more periodicities; and performing sidelink communication with a second terminal based on a result of the partial sensing operation, wherein n is a natural number equal to or greater than 2.

Method and apparatus for power saving in sidelink communication

A method by which a terminal operating in an unlicensed band transmits a signal includes the steps of: receiving, from a base station, configuration information about a carrier; receiving configuration information for configuring N (where N is an integer) guard band(s) for some frequency domains of the carrier; and transmitting a signal to the base station by using a first frequency domain of a bandwidth part belonging to the carrier, wherein the first frequency domain can be a domain excluding the N guard band(s) from the frequency domain of the bandwidth part.

Signal transmission and reception method for unlicensed band communication, and apparatus therefor

A method of a terminal may comprise: receiving, from a base station, configuration information of SSB resources; receiving, from the base station, configuration information of PRACH resources; receiving, from the base station, an SSB in a first SSB resource among the SSB resources; configuring a PRACH resource set associated with the first SSB resource based on the configuration information of the PRACH resources; and transmitting a first PRACH in a first PRACH resource belonging to the PRACH resource set and transmitting a second PRACH in a second PRACH resource belonging to the PRACH resource set, wherein the first PRACH and the second PRACH include a same preamble sequence and are transmitted using different beams.

Method and apparatus for communication in network having asymmetric uplink and downlink

A method of a terminal may comprise: receiving, from a base station, configuration information of a guard band configured within a carrier bandwidth; determining a first transmission direction of a first subband configured in a higher frequency region from the guard band within the carrier bandwidth; determining a second transmission direction of a second subband configured in a lower frequency region from the guard band within the carrier bandwidth; determining a third transmission direction of the guard band based on the first transmission direction and the second transmission direction; and performing communication with the base station according to the third transmission direction in the guard band.

Method and apparatus for in-band full-duplex communication

A timing adjustment method performed by a terminal may include: acquiring downlink synchronization with a base station; obtaining, from the base station, TA granularity-related information; transmitting, to the base station, a preamble and/or an SRS; receiving, from the base station, a TA command generated based on the preamble and/or SRS; determining a timing for uplink frame transmission by interpreting the TA command based on a TA granularity determined based on the TA granularity-related information; and performing the uplink frame transmission based on the determined timing.

Method and apparatus for timing adjustment in mobile communication system

A method for receiving a PDCCH by a terminal in a mobile communication system may comprise the steps of: receiving a first PDCCH including first DCI from a base station through a first PDCCH search space; and receiving a second PDCCH including second DCI from the base station through a second PDCCH search space, wherein the first DCI and second DCI are for scheduling the same PDSCH for the same TB or TBs associated with the same HARQ process, are for scheduling different PDSCHs for the same TB or TBs associated with the same HARQ process, or are for scheduling different PDSCHs for different TBs or TBs associated with different HARQ processes. In addition, the first DCI and second DCI may be received from the base station within a time window.

Method for transmitting or receiving downlink control channel and device using same

A method of a terminal may include: receiving, from a base station, at least one SSB belonging to a first layer; receiving, from the base station, at least one SSB belonging to a second layer; determining valid SSB(s) from among the at least one SSB belonging to the first layer and the at least one SSB belonging to the second layer; selecting at least one first SSB belonging to a layer having a higher priority among the first layer and the second layer from among the valid SSB(s); and reporting the selected first SSB to the base station, and using a beam used for receiving the first SSB to perform an initial access procedure for communications with the base station, wherein each SSB includes at least one of a synchronization signal or a broadcast channel.

Beam management method using hierarchical beams, and apparatus therefor

A method for reporting sidelink HARQ response information, performed by a terminal, includes the steps of: receiving, from a base station, information on allocation of a PSSCH resource for PSSCH transmission; determining a PSFCH resource for PSFCH reception corresponding to the PSSCH transmission; determining a transmission time point of HARQ response information corresponding to the PSSCH transmission; and transmitting the HARQ response information, corresponding to the PSSCH transmission, to the base station at the determined time point, wherein the transmission time point of the HARQ response information is expressed as a time offset, L, from a time point of the PSFCH resource, and information on the transmission time point of the HARQ response information is transmitted from the base station to the terminal.

Method and apparatus for sidelink communication

A method of a terminal may include: receiving, from a base station, a first SSB having an SSB candidate #n at a first frequency position during a first time period; receiving, from the base station, first mapping relationship information between SSB candidate indexes and SSB indexes; identifying an SSB #k mapped to the SSB candidate #n based on the first mapping relationship information for the first frequency position; acquiring time synchronization with respect to the base station based on the SSB candidate #n; and obtaining beam information for the first frequency position based on the SSB #k, wherein each of n and k is an integer equal to or greater than 0.

Method and apparatus for transmitting and receiving multi synchronization signal block 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.

Method and apparatus for uplink transmission in communication system

An operation method of a terminal in a communication system may comprise: receiving, from a base station, a first SSB; determining a RACH occasion associated with the first SSB; transmitting, to the base station, a PRACH preamble in the RACH occasion within a first radio resource to which a first SCS is applied; determining a slot to which the RACH occasion belongs based on a reference radio resource to which a reference SCS is applied instead of the first SCS; determining an RNTI for a random access procedure based on a slot index for the slot; and performing a reception operation of a response for the PRACH preamble by using the RNTI in the first radio resource.

Method and apparatus for initial access in communication system

Disclosed are a method and an apparatus for transmitting or receiving uplink feedback information in a communication system. An operation method of a terminal may comprise receiving downlink control information (DCI) from a base station, the DCI including resource allocation information of a physical downlink shared channel (PDSCH); receiving data #n from the base station through the PDSCH indicated by the DCI; generating a hybrid automatic repeat request (HARQ) codebook including an HARQ response bit #n for the data #n and an HARQ response bit #n−1 for data #n−1 received from the base station before the data #n; and transmitting the HARQ codebook to the base station. Therefore, the performance of the communication system can be improved.

Method and apparatus for transmitting or receiving uplink feedback information in communication system

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.

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

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 for transmitting and receiving data channel based on a plurality of symbol sets communication system and apparatus for the same

An operation method of a terminal in a communication system may include: selecting one or more control elements among a plurality of control elements included first UCI in consideration of a size of an uplink resource; generating multiplexed UCIs by multiplexing second UCI with the one or more control elements; and transmitting the multiplexed UCIs to a base station by using the uplink resource.

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Daejeon, South Korea

Cheul Soon Kim