METHOD FOR PERFORMING, BY UE, CARRIER AGGREGATION VIA FIRST CARRIER WAVE AND SECOND CARRIER WAVE, IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR

    公开(公告)号:US20230156608A1

    公开(公告)日:2023-05-18

    申请号:US17995350

    申请日:2021-04-05

    CPC classification number: H04W52/143 H04W52/365 H04W52/367

    Abstract: Disclosed is a method for performing, by a UE, carrier aggregation (CA) via a first carrier wave and a second carrier wave, on the basis of switching of a transmission chain, in a wireless communication system according to various embodiments. Disclosed are the method and apparatus therefor, the method comprising the steps of: reporting a first power headroom report (PHR) for the first carrier wave and a second PHR for the second carrier wave; receiving transmission chain switching information for changing a setting of a transmission chain for each of the first carrier wave and the second carrier wave; and assigning first transmission power for the first carrier wave and second transmission power for the second carrier wave, wherein one or more transmission chains are assigned to the second carrier wave via the transmission chain switching information, and when a power control value set for the second carrier wave is greater than first maximum output power of the one or more transmission chains, the second transmission power can be assigned on the basis of the number of all transmission chains for performing the CA and the number of the one or more transmission chains.

    METHOD AND APPARATUS FOR UPLINK SIGNAL TRANSMISSION BASED ON CODEBOOK IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220399921A1

    公开(公告)日:2022-12-15

    申请号:US17361740

    申请日:2021-06-29

    Abstract: A method in which a UE transmits an uplink signal, based on a codebook, in a wireless communication system includes: receiving downlink control information (DCI) for determining a precoding matrix, which is applied to transmission of the uplink signal, from a base station; determining a precoding matrix that is applied to transmission of the uplink signal from a codebook subset related to transmission of the uplink signal, based on the DCI; and transmitting the uplink signal to the base station, based on the determined precoding matrix, in which, based on that differences of phase values applied to antenna ports for transmitting the uplink signal are changed in all pairs of antenna ports, the codebook subset includes at least one specific precoding matrix for full power transmission.

    METHOD FOR FINE TA ADJUSTMENT, AND NODE USING SAME

    公开(公告)号:US20220386261A1

    公开(公告)日:2022-12-01

    申请号:US17765718

    申请日:2020-10-05

    Abstract: The present specification relates to a method by which a device performs data transmission or reception in a wireless communication system, comprising: performing an initial access operation with other devices; and transmitting first information (M−N) times and second information N times to the other devices, wherein M and N are respectively natural numbers, M is greater than N, and the first information and the second information are respectively the information related to timing adjustment, the first information has a value differing from that of the second information, and the data transmission or reception with the other devices is performed on the basis of a timing advance (TA) value, which is based on the average of all of the first information transmitted (M−N) times and the second information transmitted N times.

    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING UPLINK DATA IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220166480A1

    公开(公告)日:2022-05-26

    申请号:US17669895

    申请日:2022-02-11

    Abstract: Disclosed herein are a method and a device for transmitting a message in an initial access procedure by a user equipment (UE) in a wireless communication system. According to the present disclosure, a UE may transmit to a base station capability information associated with transmission power of the UE and the information may include a subset including at least one transmit precoding matrix indicator (TPMI) supported by the UE. The UE may receive first control information for transmitting a message associated with an initial access and the control information may include a TPMI used for the UE to transmit the message. Thereafter, the UE may transmit to the base station the message by using transmission power determined based on the TPMI and the transmission power may be determined according to whether the TPMI is included in the at least one TPMI.

    METHOD FOR REPORTING CHANNEL STATE INFORMATION IN COMP SYSTEM, AND DEVICE FOR SAME

    公开(公告)号:US20220131582A1

    公开(公告)日:2022-04-28

    申请号:US17277944

    申请日:2019-09-23

    Abstract: A method of reporting CSI by a terminal, comprising: receiving SSB from a first and a second base station, respectively; receiving SI from the first and the second base station, respectively, based on each the SSB; performing RA procedure with the first and the second base station; receiving first configuration information related to a CSI report of a first BWP and second configuration information related to a CSI report of a second BWP from the first and the second base station, the first BWP is composed of a plurality of first subbands including at least one first subband and the second BWP is composed of a plurality of second subbands including at least one second subband; based on the at least one first second subband overlapping partially or entirely, reporting a first CSI for overlapping at least one subband to the first and the second base station.

    METHOD AND APPARATUS FOR UPLINK SIGNAL TRANSMISSION BASED ON CODEBOOK IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210359734A1

    公开(公告)日:2021-11-18

    申请号:US17374567

    申请日:2021-07-13

    Abstract: A method for transmitting an uplink signal based on a codebook by a UE in a wireless communication system includes: receiving, from a base station, downlink control information (DCI) for determining a precoding matrix applied to transmission of the uplink signal; determining the precoding matrix applied to the transmission of the uplink signal from a codebook subset related to the transmission of the uplink signal based on the DCI; and transmitting, to the base station, the uplink signal based on the determined precoding matrix, I which based on that a difference between phase values applied to antenna ports for the transmission of the uplink signal is maintained in some antenna ports among all antenna port pairs, the codebook subset includes at least one specific precoding matrix applying different phase values to antenna ports included in all or some of the some antenna ports.

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