Method for performing initial access procedure in unlicensed band in wireless communication system and user equipment using same

    公开(公告)号:US11483866B2

    公开(公告)日:2022-10-25

    申请号:US17267314

    申请日:2019-08-09

    Abstract: A method, performed by a user equipment (UE), for performing an initial access procedure in an unlicensed band includes: performing the initial access procedure with a base station; and performing transmission of a physical uplink shared channel (PUSCH) on the basis of the performing of the initial access procedure, wherein the UE obtains, from the base station, information about a listen before talk (LBT) type and information about a PUSCH starting position, and the UE performs the transmission of the PUSCH on the basis of the information about the LBT type and the information about the PUSCH starting position. The information about the PUSCH starting position is information indicating one position among a plurality of PUSCH starting position candidates. The information about the LBT type indicates one of a LBT type 1, a LBT type 2, and a LBT type 3.

    METHOD FOR TRANSMITTING/RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM, AND DEVICE FOR SUPPORTING SAME

    公开(公告)号:US20220159712A1

    公开(公告)日:2022-05-19

    申请号:US17648929

    申请日:2022-01-25

    Abstract: Disclosed in various embodiments are a method for transmitting and receiving signals in a wireless communication system, and an apparatus for supporting same, the method comprising the steps of: receiving, by means of an upper layer signal, information associated with a physical uplink shared channel (PUSCH) starting location, and a plurality of combinations of channel access procedure (CAP) types; receiving DCI comprising one combination from among the plurality of combinations; and transmitting PUSCH on the basis of the one combination, wherein the plurality of combinations is a part of the information associated with the PUSCH starting location and collection of candidate combinations of CAP types.

    Method for adjusting contention window size in wireless communication system and apparatus using same

    公开(公告)号:US10779289B2

    公开(公告)日:2020-09-15

    申请号:US16399111

    申请日:2019-04-30

    Abstract: Provided are a method for adjusting a contention window size of a UE in a wireless communication system and the UE using the method. The method includes transmitting first data based on an AUL transmission to a BS, transmitting second data based on a grant-based uplink transmission to the BS, receiving first ACK/NACK information for the first data and second ACK/NACK information for the second data through an AUL-DFI, and adjusting the contention window size based on at least one of the first ACK/NACK information and the second ACK/NACK information included in the AUL-DFI. When the first data includes only one TB and the second data includes a plurality of TBs, the second ACK/NACK information is ACK if ACK/NACK for at least one of the plurality of TBs is ACK and the second ACK/NACK information is NACK if ACK/NACKs for all of the plurality of TBs are all NACKs.

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