Sidelink DRX timer-based power-saving method and device of power-saving terminal in NR V2X

    公开(公告)号:US11877278B2

    公开(公告)日:2024-01-16

    申请号:US18112404

    申请日:2023-02-21

    CPC classification number: H04W72/1263 H04W24/10 H04W72/40

    Abstract: Proposed is a method for operating a first device (100) in a wireless communication system. The method may comprise the steps of: starting a first timer related to an on-duration interval; transmitting first sidelink control information (SCI) for scheduling a first physical sidelink shared channel (PSSCH) and second SCI to a second device (200) through a physical sidelink control channel (PSCCH); transmitting the second SCI including information associated with a channel state information (CSI) request to the second device (200) through the first PSSCH; and receiving, from the second device (200), a medium access control (MAC) control element (CE) including a CSI report associated with the CSI request, on the basis of a second timer which is in operation.

    Sidelink DRX operation based on resource allocation

    公开(公告)号:US11844096B2

    公开(公告)日:2023-12-12

    申请号:US18076076

    申请日:2022-12-06

    CPC classification number: H04W72/40 H04W72/0446 H04W72/56 H04W76/28

    Abstract: A method and apparatus for Sidelink (SL) Discontinuous Reception (DRX) operation based on resource allocation is provided. A first wireless device, e.g., receiving user equipment (RX UE), monitors first Physical Sidelink Control Channel (PSCCH) transmissions from a second wireless device, e.g., transmitting UE (TX UE), in a Sidelink (SL) active time for SL Discontinuous Reception (DRX). The first wireless device receives, from the second wireless device, an indication to reselection of sidelink resources, and adjusts the SL active time based on the indication. The first wireless device monitors second PSCCH transmissions from the second wireless device in the adjusted SL active time.

    CANCELLING SL CSI REPORTING IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20230038207A1

    公开(公告)日:2023-02-09

    申请号:US17963596

    申请日:2022-10-11

    Abstract: A method and/or an apparatus for cancelling sidelink (SL) channel state information (CSI) reporting in a wireless communication system is provided. A first wireless device establishes a first PC5-Radio Resource Control (RRC) connection with a second wireless device and a second PC5-RRC connection with a third wireless device. A first wireless device triggers the first SL CSI reporting for a first pair of a Source ID for the first wireless device and a Destination ID for the second wireless device, wherein the first pair is corresponding to the first PC5-RRC connection. A first wireless device generates a MAC CE for the first SL CSI reporting. A first wireless device cancels the triggered first SL CSI reporting for the first pair.

    Method and apparatus for sidelink communication in wireless communication system

    公开(公告)号:US11503481B2

    公开(公告)日:2022-11-15

    申请号:US16833272

    申请日:2020-03-27

    Abstract: The present disclosure relates to sidelink communication in wireless communications. According to an embodiment of the present disclosure, a method performed by a first wireless device in a wireless communication system comprises: performing a direct communication with a second wireless device via a communication link based on a context stored in the first wireless device; detecting a failure of the communication link upon which a timer starts, wherein the context remains stored in the first wireless device while the timer is running; and upon detecting a good quality of the communication link while the timer is running, transmitting information indicating a recovery of the communication link based on the context to the second wireless device.

    METHOD AND APPARATUS FOR RELEASING SIDELINK RETRANSMISSION RESOURCE IN NR V2X

    公开(公告)号:US20220361227A1

    公开(公告)日:2022-11-10

    申请号:US17622603

    申请日:2020-06-29

    Abstract: According to an embodiment of the present disclosure, provided is a method by which a first apparatus performs sidelink communication. The method comprises the steps of: receiving a grant from a base station by using DCI; on the basis of the grant, determining an initial transmission resource and one or more retransmission resources for sidelink transmission to a second apparatus; transmitting, to the second apparatus, a PSCCH and a PSSCH from the initial transmission resource; receiving, from the second apparatus, an HARQ ACK for the PSCCH or the PSSCH; and transmitting, to the base station, information related to the HARQ ACK, wherein, on the basis of the information related to the HARQ ACK, a reservation of at least one of the one or more retransmission resources indicated by the base station may be released.

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