Sidelink Communication Under Control of LTE Uu Interface or NR Interface

    公开(公告)号:US20240414509A1

    公开(公告)日:2024-12-12

    申请号:US18808786

    申请日:2024-08-19

    Applicant: Apple Inc.

    Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB), Evolved Node-B (eNB) and methods of communication are generally described herein. The UE may detect one or more LTE synchronization signals from an eNB over an LTE Uu interface between the UE and the eNB. The LTE synchronization signals may be detected in resources allocated for LTE communication. The LTE synchronization signals may be detected in accordance with an LTE protocol. The UE may determine, based on the LTE synchronization signals, a reference timing and a reference frequency for NR vehicle-to-everything (V2X) communication over an NR PC5 interface with another UE.

    Data-aided sidelink synchronization for NR V2X communication

    公开(公告)号:US12082137B2

    公开(公告)日:2024-09-03

    申请号:US17286718

    申请日:2019-10-31

    Applicant: Apple Inc.

    CPC classification number: H04W56/0015 H04L5/0048 H04W4/40

    Abstract: A user equipment (UE), gNodeB or network component can be configured to support a data-aided sidelink synchronization. In response to losing a sidelink synchronization reference, sidelink synchronization tracking or performing an initial sidelink synchronization, data-aided sidelink synchronization can be performed by deriving or maintaining a sidelink synchronization from a physical sidelink control channel (PSCCH), or a physical sidelink shared channel (PSSCH) transmission of another network device, UE or vehicle to everything (V2X) based on data of another reference signal that is with the PSCCH or the PSSCH transmission.

    Resource allocation and processing behaviors for NR V2X sidelink communications

    公开(公告)号:US11956782B2

    公开(公告)日:2024-04-09

    申请号:US17287754

    申请日:2019-11-01

    Applicant: Apple Inc.

    CPC classification number: H04W72/20 H04W4/40 H04W24/08

    Abstract: An apparatus of user equipment (UE) includes processing circuitry coupled to a memory, where to configure the UE for New Radio (NR) vehicle-to-everything (V2X) sidelink communication. The processing circuitry is to determine a set of candidate resources of the UE from a sidelink resource pool, the sidelink resource divided into multiple time slots, frequency channels, and frequency sub-channels. Sidelink control information (SCI) is encoded for transmission to a second UE via a physical sidelink control channel (PSCCH). The SCI indicates a plurality of transmission resources of the set of candidate resources. A transport block is mapped across the plurality of transmission resources. A physical sidelink shared channel (PSSCH) is encoded for transmission to the second UE using the plurality of transmission resources, the PSSCH encoded to include the mapped transport block.

    Transmission configuration indication (TCI) state and beam switching

    公开(公告)号:US11894903B2

    公开(公告)日:2024-02-06

    申请号:US17599930

    申请日:2020-03-30

    Applicant: Apple Inc.

    CPC classification number: H04B7/063

    Abstract: Techniques for changing a Transmission Configuration Indication (TCI) state by a user equipment (UE) operating in a wireless communications system are provided. The UE receives a first message including a TCI state change command from a network and determines, based on the first message, whether a time offset/frequency offset (TO/FO) and a reception (Rx) beam for a new TCI state are known by the UE. Based on the determination, the UE calculates a time delay of the UE to be prepared to receive a reference signal with the new TCI state, generates a second message indicating the time delay of the UE for the new TCI state, and transmits the second message to the network.

    Bandwidth part (BWP) switching
    8.
    发明授权

    公开(公告)号:US11129057B2

    公开(公告)日:2021-09-21

    申请号:US16417992

    申请日:2019-05-21

    Applicant: Apple Inc.

    Abstract: User equipment (UE) includes processing circuitry coupled to memory. To configure the UE for active bandwidth part (BWP) switching, the processing circuitry is to decode RRC signaling configuring a plurality of BWPs for the UE. The RRC signaling further includes an indicator for an initial BWP of the plurality of BWPs for initial use by the UE as an active BWP. DCI received on a PDCCH is decoded, which includes a BWP indicator for switching the active BWP from the initial BWP to another BWP of the plurality of BWPs. RF and baseband parameters to switch the active BWP from the initial BWP to the another BWP are reconfigured. Reconfiguring the RF and baseband parameters cause an interruption of one or more slots of a serving cell of the UE. A starting time of the interruption is within a time duration of a BWP switching delay supported by the UE.

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