Method for transmitting and receiving signal for terminal to perform random access channel procedure in unlicensed band, and apparatus therefor

    公开(公告)号:US12302402B2

    公开(公告)日:2025-05-13

    申请号:US17641998

    申请日:2020-05-20

    Abstract: Disclosed is a method for transmitting and receiving a signal for a terminal to perform a random access channel procedure (RACH Procedure) in an unlicensed band. In particular, the method comprises: receiving a synchronization signal/physical broadcast channel block (SS/PBCH block); obtaining system information from a PBCH included in the SS/PBCH block; sending a first physical random access channel (PRACH) preamble through a message A on the basis of the system information; and receiving a random access response (RAR) through a message B related to contention resolution in response to the message A, wherein the first PRACH preamble is a PRACH preamble mapped to a physical uplink shared channel (PUSCH) occasion for the message A, and a window for reception of the message B may start after at least one symbol from the last symbol of the PUSCH occasion.

    Method for transmitting or receiving signal in wireless communication system, and device for supporting same

    公开(公告)号:US12155602B2

    公开(公告)日:2024-11-26

    申请号:US17608454

    申请日:2020-05-04

    Abstract: A method comprises: receiving uplink reference signal (UL-RS) configuration information; transmitting UL-RS on a UL-RS resource configured based on the UL-RS configuration information; and decoding a physical downlink shared channel (PDSCH) in a predetermined resource region, wherein: based on the configuration of discontinuous reception (DRX), a physical downlink control channel for the PDSCH is monitored within ON duration related to the DRX; the UL-RS resource includes at least one resource element (RE); the at least one RE is configured as N-comb on a frequency domain; the start position of each of the at least one RE on the frequency domain is determined based on a predetermined offset and a comb offset included in the UL-RS configuration information; the predetermined offset is acquired based on at least one orthogonal frequency division multiplexing symbol of the at least one RE and the N-comb; and the N is a natural number.

    Method for transmitting or receiving signal in wireless communication system and apparatus for supporting same

    公开(公告)号:US12052699B2

    公开(公告)日:2024-07-30

    申请号:US17606138

    申请日:2020-05-04

    CPC classification number: H04W72/0453 H04L5/0048 H04W72/23

    Abstract: The present disclosure relates to a wireless communication system and, specifically, to a method and an apparatus therefor, the method comprising the steps of: receiving information relating to a BWP for reception of a downlink signal; receiving type information of a base station; receiving frequency resource allocation information for configuring a control resource set (CORESET) in the BWP; and receiving a physical downlink control channel (PDCCH) in the BWP on the basis of the type information and the frequency resource allocation information, wherein the BWP includes N number of frequency units in which a CAP for an unlicensed band is performed, N is an integer of two or larger, particular frequency resource sections are configured between the frequency units, the number of the particular frequency resource sections is N-1, and whether the PDCCH is received in the particular frequency resource sections is determined on the basis of the type information.

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