Measurement Gap Timing for New Radio Dual Connectivity

    公开(公告)号:US20230171628A1

    公开(公告)日:2023-06-01

    申请号:US17593279

    申请日:2021-01-13

    Applicant: Apple Inc.

    CPC classification number: H04W24/10

    Abstract: A user equipment (UE) is configured to establish a network connection including a new radio (NR)-NR dual connectivity band combination wherein a primary cell (PCell) of a primary cell group (PCG) and a primary secondary cell (PSCell) of a secondary cell group (SCG) both operate on frequency range 1 (FR1) and wherein at least one cell of either the PCG or the SCG operates on frequency range 2 (FR2). The UE receives a measurement gap timing advance parameter, selects one subframe from multiple serving cell subframes and determines a starting point for a configured per-frequency range (FR) measurement gap based on the measurement gap timing advance parameter and the selected subframe.

    SYSTEM AND METHOD FOR FAST BEAM TRACKING IN A CELLULAR ENVIRONMENT

    公开(公告)号:US20230155658A1

    公开(公告)日:2023-05-18

    申请号:US17442456

    申请日:2020-08-05

    Applicant: Apple Inc.

    CPC classification number: H04B7/0695 H04W8/24

    Abstract: Methods and apparatuses are disclosed for performing fast beam tracking in a wireless communication environment. A UE signals to a gNB its capabilities for intra-symbol beam sweeping. Depending on configuration, the UE can either assume that the intra-symbol beam sweeping configuration will be implemented, or will await a response from the gNB before implementing intra-symbol beam sweeping. Although this is generally carried out during initial access between the UE and the gNB, the beam sweeping configuration can be dynamically updated by either the UE or the gNB during established communication. For example, the UE can signal a desired change via its MAC CE, and the gNB can signal its change to the UE via DCI.

    Reference Point Selection for OTDOA in a Non-Terrestrial Network

    公开(公告)号:US20230061890A1

    公开(公告)日:2023-03-02

    申请号:US17820311

    申请日:2022-08-17

    Applicant: Apple Inc.

    Abstract: A positioning server is configured to determine a set of anchor points to be used in a positioning method for a user equipment, wherein each of the anchor points is associated with a type of anchor point comprising a terrestrial type or a non-terrestrial type, select a subset of the set of anchor points based on the types of the anchor points, select one anchor point from the subset of anchor points as a reference anchor point based on an expected quality of a positioning reference signal (PRS) transmission received from the anchor point, transmit to the UE a PRS configuration for each of the anchor points and indicating to the UE the reference anchor point and instruct each of the anchor points to transmit respective PRSs in accordance with the PRS configuration.

    Wake-Up Signaling during a Discontinuous Reception Cycle

    公开(公告)号:US20220400433A1

    公开(公告)日:2022-12-15

    申请号:US17755354

    申请日:2019-11-07

    Applicant: Apple Inc.

    Abstract: A method performed by a user equipment (UE) is described. The method includes establishing a connection to a network that includes discontinuous reception (DRX) cycles, each DRX cycle including a scheduled OnDuration and a wake up signal (WUS) opportunity corresponding to each of the scheduled OnDurations, when a WUS is received in the WUS opportunity for one of the scheduled OnDurations, configuring the UE to utilize an active mode of processing during the one of the scheduled OnDurations and when a WUS is not received in the WUS opportunity for one of the scheduled OnDurations, configuring the UE to utilize a sleep mode of inactivity during the one of the scheduled OnDurations.

    METHODS AND APPARATUS FOR CONFIGURING W1, W2, AND WF for PORT SELECTION CODEBOOK ENHANCEMENT

    公开(公告)号:US20220361015A1

    公开(公告)日:2022-11-10

    申请号:US17593721

    申请日:2021-05-10

    Applicant: APPLE INC.

    Abstract: Apparatus and methods are provided for port selection codebook configuration. A user equipment (UE) may decode a channel state information (CSI) report configuration (CSI-ReportConfig) from a base station. The CSI-ReportConfig configuring a port selection codebook comprising a port selection matrix W1, a combinational coefficient matrix W2, and a frequency basis selection matrix Wf. Based on the CSI-ReportConfig, the determines, for the port selection matrix W1, up to L CSI reference signal (CSI-RS) ports out of P CSI-RS ports configured for measuring and reporting CSI. For the frequency basis selection matrix Wf, the UE determines up to Mv frequency basis out of N frequency basis. For the combinational coefficient matrix W2, the UE determines up to L*Mv entries per layer. The UE reports one or more of the port selection matrix W1, the combinational coefficient matrix W2, and the frequency basis selection matrix Wf to the base station.

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