Dynamic protocol stack reset during radio handover

    公开(公告)号:US10979944B2

    公开(公告)日:2021-04-13

    申请号:US16348380

    申请日:2017-11-10

    Applicant: Apple Inc.

    Inventor: Candy Yiu

    Abstract: An apparatus of a base station (BS) of a radio access network (RAN) comprises memory and processing circuitry. The processing circuitry includes a central unit (CU) portion and a distributed unit (DU) portion that implement a BS multi-layer protocol stack divided between the CU portion and the DU portion. The processing circuitry initiates a handover to change a serving cell of user equipment (UE). The handover includes a change in a portion of logical layers of the BS multi-layer protocol stack, and the processing circuitry encodes an information element for transmission to the UE indicating logical layers of a UE multi-layer protocol stack implemented in the UE to be reset by the UE in association with the handover.

    ACTIVATION OF SECONDARY CELL CONTAINING BANDWIDTH PARTS

    公开(公告)号:US20210014836A1

    公开(公告)日:2021-01-14

    申请号:US16826421

    申请日:2020-03-23

    Applicant: Apple Inc.

    Abstract: 5G methods and architectures to determine active SCells and their bandwidth parts (BWP) used in carrier aggregation (CA) are disclosed in which activating a BWP for an active SCell is performed initially according to a default value provided in initial radio resource control (RRC) messaging. After initialization, SCells and the SCell BWPs used by the user equipment (UE) are activated by RRC messaging, downlink control information (DCI) or dedicated medium access control (MAC) control elements (MAC CEs) with the initial BWP used for an activated SCell being a default value provided during initialization.

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