Method for transmitting and receiving physical random access channel preamble in wireless communication system and apparatus therefor

    公开(公告)号:US11974325B2

    公开(公告)日:2024-04-30

    申请号:US17425286

    申请日:2020-01-30

    CPC classification number: H04W74/0833

    Abstract: Proposed is a method for transmitting a physical random access channel (PRACH) preamble in a wireless communication system. Specifically, a method performed by user equipment (UE) comprises the steps of: receiving, from a base station, setting information including a first power ramping step for a two-step random access channel (RACH) and a second power ramping step for a four-step RACH; transmitting, to the base station, information including a first preamble and a physical uplink shared channel (PUSCH) for a two-step RACH on the basis of the first power ramping step; and transmitting, to the base station, a second preamble for a four-step RACH by using the second power ramping step, on the basis of the number of retransmissions of the information exceeding a maximum number of retransmissions associated with a preset two-step RACH.

    Method and device for transmitting or receiving signal on basis of space parameter in wireless communication system

    公开(公告)号:US11943036B2

    公开(公告)日:2024-03-26

    申请号:US18108891

    申请日:2023-02-13

    CPC classification number: H04B7/0868 H04B7/0626 H04L27/26025

    Abstract: Disclosed are a method and a device for transmitting or receiving a signal on the basis of a space parameter in a wireless communication system. A method for performing downlink reception or uplink transmission by a terminal in a wireless communication system according to an embodiment of the present disclosure may comprise the steps of: transmitting information related to a beam switching time of the terminal to a base station; receiving, from the base station, downlink control information (DCI) including information on the downlink reception or the uplink transmission; and on the basis of the beam switching time and a predetermined threshold value, applying one space parameter set among multiple space parameter sets so as to perform the downlink reception or the uplink transmission, wherein at least one of the beam switching time and the predetermined threshold value may be based on at least one of subcarrier spacing, the position of a frequency, a capability of the terminal, and a cyclic prefix (CP)-related configuration.

    METHOD AND DEVICE FOR PERFORMING UPLINK TRANSMISSION AND RECEPTION IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20240056234A1

    公开(公告)日:2024-02-15

    申请号:US18378939

    申请日:2023-10-11

    CPC classification number: H04L1/1887 H04W72/23

    Abstract: Disclosed are a method and device for performing uplink transmission and reception in a wireless communication system. The method by which a terminal performs an uplink transmission, according to an embodiment of the present disclosure, comprises the steps of: receiving a first downlink transmission and a second downlink transmission from a base station; and transmitting, to the base station, first HARQ-ACK information associated with the first downlink transmission and second HARQ-ACK information associated with the second downlink transmission, which have been multiplexed on a PUCCH, wherein, on the basis of the first downlink transmission being a unicast SPS downlink transmission and the second downlink transmission being a multicast downlink transmission being scheduled by first DCI, a resource for the PUCCH may be based on information related to the unicast SPS downlink transmission.

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