Method and apparatus for UE TA reporting in a wireless communication system

    公开(公告)号:US11737042B2

    公开(公告)日:2023-08-22

    申请号:US17981227

    申请日:2022-11-04

    CPC classification number: H04W56/0045 H04W24/10

    Abstract: Methods, systems, and apparatuses are provided for User Equipment (UE) Timing Advance (TA) reporting in a wireless communication system. The UE can appropriately trigger the TA report with the different configurations by system information (e.g., for Random Access (RA) procedure, for TA report during RA, etc.) and dedicated signaling (e.g., for Radio Resource Control (RRC) connected mode, for event-triggered TA report, etc.). A method for a UE in a wireless communication system can comprise receiving a first configuration of TA report, receiving a second configuration of TA report, and determining whether to trigger a second TA report upon receiving the second configuration based on whether a first TA report has been transmitted to a serving cell.

    METHOD AND APPARATUS FOR HANDLING CONTENTION RESOLUTION IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220322458A1

    公开(公告)日:2022-10-06

    申请号:US17706678

    申请日:2022-03-29

    Abstract: Methods and apparatuses for a User Equipment (UE) to monitor the Physical Downlink Control Channel (PDCCH) appropriately in order to reduce power consumption and perform Contention Resolution for a Random Access (RA) procedure in a Non-Terrestrial Network (NTN). The UE can perform a Msg3 transmission during a RA procedure in a NTN and start a RA contention resolution timer in the first symbol after the end of the Msg3 transmission plus a timing offset. In response to expiry of the RA contention resolution timer, the UE determines whether to consider Contention Resolution not successful based on at least whether the RA contention resolution timer expires during a time duration of the timing offset after a Msg3 retransmission.

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