Sidelink mode-1 based standalone operations

    公开(公告)号:US12041657B2

    公开(公告)日:2024-07-16

    申请号:US17665270

    申请日:2022-02-04

    CPC classification number: H04W74/0816 H04W72/0446 H04W74/006 H04W74/0866

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first downlink control information (DCI) message indicating a first listen-before-talk (LBT) grant for accessing a sidelink channel, the first DCI being associated with a first search space of the UE. The UE may then receive a second DCI message indicating a second LBT grant for accessing the channel or an uplink channel, the second DCI being associated with a second search space of the UE and including an activation trigger for the first LBT grant of the first DCI. The UE may then perform a first LBT procedure to access the sidelink channel in accordance with the first LBT grant during a first channel occupancy time (COT). The UE may further perform a second LBT procedure to access the uplink channel during the first COT.

    Methods and system for establishing multiple starting points for sidelink transmissions

    公开(公告)号:US12028896B2

    公开(公告)日:2024-07-02

    申请号:US17445306

    申请日:2021-08-17

    CPC classification number: H04W74/04 H04W16/14 H04W92/18

    Abstract: Wireless communications systems and methods related to multiple starting points for new radio sidelink transmission over unlicensed band are provided. In some aspects, a UE may perform a channel access procedure to access a first physical sidelink shared channel (PSSCH) transmission resource of an unlicensed new radio spectrum. In some aspects, the first PSSCH transmission resource may be reserved by a control message and may include a plurality of transmission starting points. Further, the first UE may transmit first data to a second UE via the first PSSCH transmission resource starting at a later transmission starting point than one or more prior transmission starting points of the plurality of transmission starting points when the performing the channel access procedure fails at each of the one or more prior transmission starting points.

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