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    HANDLING UPLINK TRANSMISSIONS FOR MULTI-TRP OPERATION
    122.
    发明申请
    HANDLING UPLINK TRANSMISSIONS FOR MULTI-TRP OPERATION 有权

    公开(公告)号：US20220158775A1

    公开(公告)日：2022-05-19

    申请号：US17438661

    申请日：2020-03-27

    Applicant: Apple Inc.

    Inventor： Gang Xiong ,  Yushu Zhang ,  Bishwarup Mondal ,  Debdeep Chatterjee ,  Guotong Wang

    IPC: H04L1/18 ,  H04W74/00

    Abstract: Systems, devices, and techniques for wireless communications are described. A described technique includes receiving, by a user equipment (UE) from one or more Transmission and Reception Points (TRPs), a physical downlink shared channel (PDSCH) transmission; determining, by the UE for a physical uplink control channel (PUCCH) carrying hybrid automatic repeat request-acknowledgement (HARQ-ACK), a TRP index in accordance with a control resource set (CORESET) scheduling the PDSCH transmission; and transmitting, by the UE via the PUCCH, HARQ-ACK information based on the receiving of the PDSCH transmission in accordance with the TRP index.

    Time density and frequency density determination of phase tracking reference signals (PT-RS) in new radio (NR) systems
    124.
    发明授权
    Time density and frequency density determination of phase tracking reference signals (PT-RS) in new radio (NR) systems 有权

    公开(公告)号：US11317430B2

    公开(公告)日：2022-04-26

    申请号：US16886256

    申请日：2020-05-28

    Applicant: Apple Inc.

    Inventor： Ajit Nimbalker ,  Alexei Davydov ,  Gang Xiong ,  Yushu Zhang

    IPC: H04W72/12 ,  H04W72/14 ,  H04L5/00 ,  H04L1/18 ,  H04L27/26

    Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. The UE may receive an information element (IE) that includes: a higher layer parameter that indicates a plurality of modulation and coding scheme (MCS) thresholds; and another higher layer parameter that includes a plurality of resource block (RB) thresholds. The UE may determine a time density of phase tracking reference signal (PT-RS) to be transmitted by the UE based at least partly on a comparison between a MCS and the plurality of MCS thresholds. The UE may determine a frequency density of the PT-RS based at least partly on a comparison between a scheduled bandwidth and the plurality of RB thresholds. The UE may encode the PT-RS for transmission in accordance with the determined time density and the determined frequency density.

    SYSTEMS AND METHODS FOR RETRANSMISSION OF CONTENTION FREE RANDOM ACCESS BEAM FAILURE RECOVERY (CFRA-BFR) AND CROSS-CC BEAM FAILURE DETECTION
    125.
    发明申请
    SYSTEMS AND METHODS FOR RETRANSMISSION OF CONTENTION FREE RANDOM ACCESS BEAM FAILURE RECOVERY (CFRA-BFR) AND CROSS-CC BEAM FAILURE DETECTION 有权

    公开(公告)号：US20220124819A1

    公开(公告)日：2022-04-21

    申请号：US17428002

    申请日：2020-02-05

    Applicant: Apple Inc.

    Inventor： Yushu Zhang ,  Gang Xiong ,  Guotong Wang ,  Alexei Davydov

    IPC: H04W74/08

    Abstract: Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for beam failure recovery (BFR). For example, some embodiments are directed to a user equipment (UE). The UE includes radio front end circuitry and processor circuitry coupled to the radio front end circuitry. The processor circuitry can be configured to receive, using the radio front end circuitry, one or more reference signals. The processor circuitry can be further configured to, in response to determining that a beam failure occurred for the one or more reference signals, determine a contention-free (CF) physical random access channel (PRACH) resource for a beam failure recovery (BFR) request. The processor circuitry can be further configured to transmit, using the radio front circuitry, the BFR request using the determined CF PRACH resource.

    Reference signals for initial acquisition in 5G systems
    128.
    发明授权
    Reference signals for initial acquisition in 5G systems 有权

    公开(公告)号：US11201657B2

    公开(公告)日：2021-12-14

    申请号：US16881212

    申请日：2020-05-22

    Applicant: Apple Inc.

    Inventor： Gang Xiong ,  Huaning Niu ,  Yushu Zhang ,  Jong-Kae Fwu ,  Yuan Zhu ,  Ralf Matthias Bendlin

    IPC: H04B7/06 ,  H04J11/00 ,  H04B7/08 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W84/04

    Abstract: Disclosed herein are apparatuses, systems, and methods for reference signal design for initial acquisition, by receiving a first primary synchronization signal (PSS) and a first secondary synchronization signal (SSS) from a first transmit (Tx) beam, in first contiguous orthogonal frequency division multiplexing (OFDM) symbols of a downlink subframe. A UE can receive at least a second PSS and a second SSS from a second Tx beam in contiguous OFDM symbols of the downlink subframe. A UE can then detect beamforming reference signals (BRSs) corresponding to the first Tx beam and the second Tx beam, based on identification of physical cell ID information and timing information processed from the first PSS, the second PSS, the first SSS, and the second SSS. The UE can select the first Tx beam or the second Tx beam that was received with the highest power, based on the BRSs. Other embodiments are described.

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