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    Methods and Apparatus for PRACH Resource Determination and RA-RNTI Computation in Wireless Communication
    101.
    发明申请
    Methods and Apparatus for PRACH Resource Determination and RA-RNTI Computation in Wireless Communication 有权

    公开(公告)号：US20220225416A1

    公开(公告)日：2022-07-14

    申请号：US17456304

    申请日：2021-11-23

    Applicant: Apple Inc.

    Inventor： Hong He ,  Chunxuan Ye ,  Dawei Zhang ,  Haitong Sun ,  Huaning Niu ,  Jie Cui ,  Oghenekome Oteri ,  Wei Zeng ,  Yang Tang

    IPC: H04W74/08 ,  H04W72/04

    Abstract: Aspects herein relate to wireless devices, circuits, and methods for determining a PRACH resource mapping comprising a starting symbol position within a reference slot, wherein the starting symbol position is determined based, at least in part, on a subcarrier spacing configuration of PRACH resources of a wireless network that a wireless device is operating on; and using the radio to transmit a RACH preamble and an associated RA-RNTI via the determined PRACH resource mapping. Further aspects herein relate to devices, circuits, and methods for using a modified RA-RNTI for transmission or reception of data over a wireless network, wherein the wireless network has a subcarrier spacing configuration of PRACH resources, wherein a size of the subcarrier spacing configuration of the PRACH resources causes out-of-range RA-RNTI values to be calculated using a legacy RA-RNTI equation in an unmodified form, wherein the range of permissible RA-RNTI values is from 0 to 216−1.

    Time advance adjustment delay for shortened transmission time interval under carrier aggregation or dual connectivity
    102.
    发明授权
    Time advance adjustment delay for shortened transmission time interval under carrier aggregation or dual connectivity 有权

    公开(公告)号：US11375524B2

    公开(公告)日：2022-06-28

    申请号：US16462877

    申请日：2018-08-01

    Applicant: APPLE INC.

    Inventor： Yuhan Zhou ,  Jie Cui ,  Yang Tang ,  Hong He

    IPC: H04W72/12 ,  H04W72/04

    Abstract: Systems and methods are provided for handling different timing advance (TA) adjustment delays corresponding to different transmission time intervals (TTIs) from different serving cells under carrier aggregation or dual connectivity. A user equipment (UE) selects and implements one TA adjustment delay even if two or more serving cells transmit with different TTIs. In one embodiment, the UE uses a predetermined TA adjustment delay for each of a plurality of TA commands received from serving cells with different TTI lengths. In another embodiment, the UE uses a TA adjustment delay that is a maximum value of the TA adjustment delays for the TTIs from the different serving cells.

    MEASUREMENT GAP PATTERN USE AND MANAGEMENT FOR WIRELESS COMMUNICATION SYSTEMS
    104.
    发明申请
    MEASUREMENT GAP PATTERN USE AND MANAGEMENT FOR WIRELESS COMMUNICATION SYSTEMS 有权

    公开(公告)号：US20220182867A1

    公开(公告)日：2022-06-09

    申请号：US17440675

    申请日：2020-05-01

    Applicant: Apple Inc.

    Inventor： Jie Cui ,  Yang Tang ,  Qiming Li ,  Zhibin Yu ,  Hua Li

    IPC: H04W24/10

    Abstract: A user equipment (UE) device is configured for performing a signal measurement for wireless communication in a new radio (NR) network. The UE is configured to determine a frequency range (FR) of a serving cell configured to send a signal that is measured by the UE using a signal measurement. The UE configures a measurement gap (MG) pattern to perform the signal measurement. Configuring the measurement gap includes determining that the frequency range of the serving cell includes frequencies of a second frequency range (FR2), determining that a measurement object (MO) configuration for the FR2 is available, setting a measurement gap repetition periodicity (MGRP) value for the signal measurement, and setting a measurement gap length (MGL) value for the signal measurement. The UE performs a signal measurement using the MGRP value and the MGL value.

    Bandwidth part (BWP) switching
    105.
    发明授权
    Bandwidth part (BWP) switching 有权

    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.

    Inventor： Andrey Chervyakov ,  Rui Huang ,  Yang Tang ,  Jie Cui ,  Yuhan Zhou

    IPC: H04W28/20 ,  H04W72/04 ,  H04W76/27 ,  H04L1/00

    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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