Layer 2 UE to UE data forwarding
    132.
    发明授权

    公开(公告)号:US12041526B2

    公开(公告)日:2024-07-16

    申请号:US17593600

    申请日:2020-10-22

    Applicant: APPLE INC.

    CPC classification number: H04W40/02 H04L45/66 H04W76/11 H04W88/04

    Abstract: Systems and methods for using a relay user equipment (UE) to transport data of interest received from a first remote UE to a second remote UE on a UE to UE relay within a wireless communication system are discussed herein. These methods may be performed at Layer 2 of a protocol stack of the wireless communication system. Data packets sent on the UE to UE relay may include an adaptation header including routing information (e.g., Layer 2 addresses, a bearer-specific index, etc.) for the UE to UE relay. An adaptation layer may accordingly be provided within Layer 2 to decode these adaptation headers. In some cases, a per-bearer approach may be used to map between individual direct bearers of a hop by hop path configuration of the UE to UE relay. Embodiments eschewing the adaptation header and instead using logical channel identifiers (LCIDs) to make routing indications are also described.

    Systems and methods to provide CSI-RS/TRS indication to UEs in idle/inactive mode

    公开(公告)号:US12028870B2

    公开(公告)日:2024-07-02

    申请号:US17593748

    申请日:2020-07-31

    Applicant: Apple Inc.

    CPC classification number: H04W72/23 H04L5/0048 H04W68/005

    Abstract: An example method for wireless communication includes: transmitting by a base station, to a user device in a reduced power state, resource information for receiving a channel state information reference signal (CSI-RS) and tracking reference signal (TRS); transmitting the CSI-RS and TRS based on the transmitted resource information to the user device, wherein the user device has exited the reduced power state; determining whether there is paging information to transmit in a first physical downlink shared channel (PDSCH) transmission for the user device; transmitting a downlink control information message, wherein the downlink control information message is based on the determination that there is paging information for the user device, and wherein the user device has synchronized with the base station; and transmitting the first PDSCH transmission, based on the determination that there is paging information for the user device.

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