TIME SYNCHRONIZATION OPERATION IN VEHICLE COMMUNICATION

    公开(公告)号:WO2021223229A1

    公开(公告)日:2021-11-11

    申请号:PCT/CN2020/089232

    申请日:2020-05-08

    Abstract: Methods and systems for performing time synchronization for a Cellular Vehicle-to-Everything (C-V2X) wireless interface of a vehicle are provided. In one example, a method comprises: determining, by a vehicle UE, whether a Global Navigation Satellite System (GNSS) receiver of the vehicle receives a GNSS signal including time information for a time synchronization operation for the vehicle's local clock source; based on whether the GNSS receiver receives a GNSS signal including the time information, adjusting a local clock time of the vehicle's local clock source based on one of: the time information included in the GNSS signal, or one or more wireless signals broadcasted from a base station; and adjusting, based on the adjusted local clock time, at least one of: a phase or a frequency of a clock signal supplied to the C-V2X wireless interface.

    VEHICLE-TO-EVERYTHING CELL RESELECTION
    6.
    发明申请

    公开(公告)号:WO2021223204A1

    公开(公告)日:2021-11-11

    申请号:PCT/CN2020/089133

    申请日:2020-05-08

    Abstract: Methods, systems, and devices for wireless communications are described. One method of informing the UE of priorities associated with cells that support a vehicle-to-everything (V2X) service may include the UE receiving a priority indicator from the base station. The priority indicator may inform the UE of priorities associated with one or more cells that support the V2X service. The priority indicator may be received in a radio resource control (RRC) connection release message. The UE may use the priority indicator to determine which cells of the set of cells support the V2X service. Accordingly, the UE may perform a cell reselection procedure based at least in part on the priority indicator, the measured parameters, or both. By informing the UE of priorities associated with cells that support the V2X service, the V2X service may have greater continuity at the UE, thereby increasing the performance and quality of the V2X service.

Patent Agency Ranking