Systems, methods and devices for cellular synchronization references

    公开(公告)号:US11638227B2

    公开(公告)日:2023-04-25

    申请号:US16869830

    申请日:2020-05-08

    Applicant: APPLE INC.

    Abstract: Cellular (e.g., LTE or UMTS) and global navigation satellite system (GNSS) based technologies can provide ubiquitous and seamless synchronization solution for LTE-based vehicle to everything (V2X) or Proximity Services synchronization (ProSe) services. For example, by using joint GNSS timing references and LTE cellular network timing references for V2X or ProSe system synchronization benefits of using GNSS technologies to improve synchronization procedure for LTE based V2X or ProSe services can be enabled, including: (1) accurate and stable timing, (2) availability of a global and stable timing reference and (3) ability to propagate GNSS timing by user equipment having sufficient GNSS signal quality.

    SYSTEMS AND METHODS OF PROVIDING TIMING OF SL TRANSMISSION WHEN SCHEDULED BY NR GNB

    公开(公告)号:US20220191896A1

    公开(公告)日:2022-06-16

    申请号:US17593078

    申请日:2020-04-01

    Applicant: APPLE INC.

    Abstract: Methods disclosed herein may include receiving, at a gNB from a UE, a minimum time gap between a reception at the UE of a configuring message that configures a sending of an SL transmission by the UE and the sending of the SL transmission. Alternatively, the minimum time gap may be measured from the reception at the UE of a DCI message that triggers an SL transmission and the sending of the SL transmission. The method may further include determining, at the gNB, timing information (e.g., an offset, or an absolute time) for the UE to use to schedule the SL transmission, the timing information based on the minimum time gap; generating, at the gNB, a message including a field indicating the timing information; and sending, from the gNB, the message to the UE. Analogous methods for UEs are also disclosed herein. Systems implementing these methods are also disclosed.

Patent Agency Ranking