METHOD AND UE FOR POWER CONTROL FOR TWO-STEP RANDOM ACCESS PROCEDURE

    公开(公告)号:US20220167424A1

    公开(公告)日:2022-05-26

    申请号:US17441181

    申请日:2020-05-04

    Applicant: Apple Inc.

    Abstract: Techniques are provided for implementing power control in a 2-step random access channel (RACH) procedure, including implementing power control during MsgA transmission of the 2-step RACH procedure. For example, a user equipment (UE) determines a transmission power for a physical uplink shared channel (PUSCH) transmission based on a transmission power of a physical random access channel (PRACH) preamble that is associated with the PUSCH transmission during the 2-step RACH procedure. The UE further performs the 2-step RACH procedure using the determined transmission power of the PUSCH to establish a connection to the wireless network.

    SYSTEM AND METHOD FOR POWER CONTROL FOR 2-STEP RACH

    公开(公告)号:US20220086765A1

    公开(公告)日:2022-03-17

    申请号:US17423713

    申请日:2020-01-17

    Applicant: Apple Inc.

    Abstract: Systems, apparatuses, methods, and computer-readable media are provided for power control aspects for MsgA physical uplink shared channel (PUSCH). The approach includes determining a transmission power for a PUSCH associated with a physical random access channel (PRACH) in a 2-step random access channel (RACH) mode, where the transmission power for the PUSCH is determined based on a transmission power of the associated PRACH and a power offset. The approach further includes ramping up a transmission power of the PRACH and PUSCH until a maximum transmission power is reached.

    USER EQUIPMENT TIMING ADVANCE VALIDATION WINDOW DESIGN FOR FREQUENCY RANGE 2 (FR2) SMALL DATA TRANSFER (SDT)

    公开(公告)号:US20250071855A1

    公开(公告)日:2025-02-27

    申请号:US18727045

    申请日:2022-01-07

    Applicant: APPLE INC.

    Abstract: Methods and apparatus for Timing Advance (TA) validation are disclosed. In some embodiments, a method for wireless communication at a user equipment (UE) comprises receiving, from a base station, configuration information, where the configuration information specifying a configured grant (CG)-small data transfer (SDT) resource available for use by the UE and specifying a configuration for a Reference Signal Received Power (RSRP) change-based TA validation method to be met in order to perform a SDT while in the RRC inactive state, the RSRP change-based TA validation method having configured TA validation criteria that is evaluated based on two measurement windows for timing advance (TA) validation, and at least one boundary of at least one of the two measurement windows for TA validation is based on a minimum of either a Frequency Range 2 (FR2) measurement period and a scaled Discontinuous Reception (DRX) cycle period, existing at time of TA validation criteria evaluation.

    HARQ Codebook Determination in Wireless Communications

    公开(公告)号:US20240405924A1

    公开(公告)日:2024-12-05

    申请号:US18806971

    申请日:2024-08-16

    Applicant: Apple Inc.

    Abstract: A user equipment (UE) and a network agree on the use of a hybrid automatic repeat request (HARQ) codebook. The UE receives a plurality of downlink control information (DCI) transmissions during a corresponding plurality of physical downlink control channel (PDCCH) monitoring occasions from the base station, wherein each DCI transmission schedules multiple physical downlink shared channel (PDSCH) transmissions on a corresponding one of a plurality of component carriers (CCs), receives a time domain resource allocation (TDRA) table configuration from the base station, determines a maximum number of PDSCH transmissions per CC based on the TDRA table configuration, groups the plurality of CCs together and determines a hybrid automatic repeat request (HARQ)-acknowledgement (ACK) codebook size based on a number of the multiple PDSCH transmissions, the maximum number of PDSCH transmissions, and a resulting ACK or negative acknowledgement (NACK) for each of the multiple PDSCH transmissions.

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