User equipment Layer 2 buffer operation in IAB networks

    公开(公告)号:US12004071B2

    公开(公告)日:2024-06-04

    申请号:US17656943

    申请日:2022-03-29

    Applicant: Apple Inc.

    CPC classification number: H04W40/248 H04W28/0257 H04W88/14

    Abstract: A user equipment (UE) is configured to access a first base station in a network via an access link, wherein the first base station is an integrated access and backhaul (IAB) node in a first IAB network topology connected to a second base station via one or more backhaul links, wherein the second base station is an IAB-donor for the first base station, report, to the first base station, information for reducing a maximum data rate for the UE when the UE is deployed in one or more IAB network topologies and receive data packages with a reduced maximum data rate based on the reported information.

    DISCONTINUOUS COVERAGE IN NR NTN AND IOT NTN SYSTEMS

    公开(公告)号:US20240032139A1

    公开(公告)日:2024-01-25

    申请号:US17593697

    申请日:2021-08-04

    Applicant: APPLE INC.

    CPC classification number: H04W76/28 H04W52/0225

    Abstract: The functions of user equipment (UE), radio access network (RAN) devices, and core network (CN) devices in circumstances where a UE is expected to experience discontinuous coverage are described herein. A UE may send a CN a non-access stratum (NAS) message including a release request indicating that a UE is leaving coverage and assistance information. The CN may interrupt paging of the UE and resume the paging according to the assistance information. A UE may enter a low power usage mode upon leaving coverage, and may use one or more timers to determine when to check for coverage and send a mobility update message corresponding to the low power usage mode. A base station may receive, from a UE, a radio resource control (RRC) message comprising a release request and assistance information, send an RRC release message to the UE in response, and forward the assistance information to the CN.

    RNA Updating in SDT Procedure
    128.
    发明公开

    公开(公告)号:US20230276520A1

    公开(公告)日:2023-08-31

    申请号:US17438281

    申请日:2021-01-14

    Applicant: Apple Inc.

    CPC classification number: H04W76/20 H04W76/19

    Abstract: Apparatuses, systems, and methods for a user equipment device (UE) to perform a method for supporting a periodical radio access network (RAN) notification area (RNA) mechanism when small data transmission (SDT) is enabled for a user equipment device (UE). The method may include the UE receiving, from a base station, an indication enabling an SDT procedure along with an indication of an RNA timer configuration, transitioning, to a radio resource control (RRC) inactive state, and initiating an RNA timer based on the RNA timer configuration. The UE may, upon initiation of the SDT procedure, stop the RNA timer and, upon termination of the SDT procedure, start the RNA timer. During the SDT procedure, the UE may receive any of an SDT termination indication, an SDT subsequent transmission indication, or an SDT subsequent transmission termination indication that may include an updated RNA timer configuration (and/or RNA timer reconfiguration).

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