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    SYSTEMS AND METHODS FOR RETRANSMISSION OF CONTENTION FREE RANDOM ACCESS BEAM FAILURE RECOVERY (CFRA-BFR) AND CROSS-CC BEAM FAILURE DETECTION
    71.
    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.

    Collision handling of reference signals
    72.
    发明授权
    Collision handling of reference signals 有权

    公开(公告)号：US11290230B2

    公开(公告)日：2022-03-29

    申请号：US16625149

    申请日：2018-06-20

    Applicant: Apple Inc.

    Inventor： Debdeep Chatterjee ,  Alexei Vladimirovich Davydov ,  Seunghee Han ,  Jeongho Jeon ,  Sameer Pawar ,  Avik Sengupta ,  Guotong Wang ,  Yushu Zhang

    IPC: H04L5/00 ,  H04L1/18

    Abstract: A user equipment (UE) can include processing circuitry configured to decode control information of a physical downlink control channel (PDCCH) received via a resource within a control resource set (CORESET) occupying a subset of a plurality of OFDM symbols within a slot. At least one of the symbols in the subset coincides with a pre-defined symbol location associated with a demodulation reference signal (DM-RS) of a PDSCH. The DM-RS can be detected within the slot, the DM-RS starting at a symbol location that is shifted from the pre-defined symbol location and following the subset of symbols. Downlink data scheduled by the PDCCH and received via the PDSCH can be decoded, where the decoding is based on the detected DM-RS.

    Method and Apparatus for Radio Link Monitoring
    73.
    发明申请
    Method and Apparatus for Radio Link Monitoring 有权

    公开(公告)号：US20210344431A1

    公开(公告)日：2021-11-04

    申请号：US17234665

    申请日：2021-04-19

    Applicant: Apple Inc.

    Inventor： Yushu Zhang ,  Wook Bong Lee ,  Dae Won Lee ,  Seunghee Han ,  Alexei Davydov ,  Guotong Wang ,  Gregory Morozov

    IPC: H04B17/327 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/08

    Abstract: Provided herein are method and apparatus for perform radio link monitoring (RLM) based on a Reference signal (RS). An embodiment provides a user Equipment (UE) comprising circuitry configured to: decode a Reference Signal (RS) received from an access node; and determine beam quality for one or more beam pair links (BPLs) of the RS between the UE and the access node based on the decoded RS, wherein each of the BPLs comprises a transmit (Tx) beam of the access node and a receive (Rx) beam of the UE. Also provided is a procedure of RLM. At least some embodiments allow for beam recovery request for UE beam refinement, and allow for determining whether radio link failure (RLF) occurs.

    Multiplexing of PUCCH for beam failure recovery and other signals
    78.
    发明授权
    Multiplexing of PUCCH for beam failure recovery and other signals 有权

    公开(公告)号：US12261671B2

    公开(公告)日：2025-03-25

    申请号：US18486249

    申请日：2023-10-13

    Applicant: Apple Inc.

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

    IPC: H04B7/06 ,  H04L5/00 ,  H04W52/28 ,  H04W52/32 ,  H04L27/26

    Abstract: Apparatuses, systems, and methods for multiplexing of PUCCH for beam failure recovery and other signals. A UE may determine a transmission dropping rule and a transmission power scaling rule for a PUCCH which is dedicatedly configured for secondary BFR transmission, such as a PUCCH-BFR, when it is multiplexed with at least one other signal. The PUCCH-BFR and the at least one other signal may be multiplexed in a CC or in multiple CCs. The UE may determine a transmission dropping rule, e.g., so that UE can transmit an uplink signals with higher priority and drop the other uplink signal with lower priority to avoid beam collisions. The UE may determine a transmission power scaling rule, e.g., so the UE may scale transmission power within a CC and/or across CCs. The UE may multiplex the PUCCH-BFR with the at least one other signal according to the rules.

    Collision handling of reference signals
    79.
    发明授权
    Collision handling of reference signals 有权

    公开(公告)号：US12238029B2

    公开(公告)日：2025-02-25

    申请号：US18212635

    申请日：2023-06-21

    Applicant: Apple Inc.

    Inventor： Debdeep Chatterjee ,  Alexei Vladimirovich Davydov ,  Seung Hee Han ,  Jeongho Jeon ,  Sameer Pawar ,  Avik Sengupta ,  Guotong Wang ,  Yushu Zhang

    IPC: H04L5/00 ,  H04L1/1812

    Abstract: A user equipment (UE) can include processing circuitry configured to decode control information of a physical downlink control channel (PDCCH) received via a resource within a control resource set (CORESET) occupying a subset of a plurality of OFDM symbols within a slot. At least one of the symbols in the subset coincides with a pre-defined symbol location associated with a demodulation reference signal (DM-RS) of a PDSCII. The DM-RS can be detected within the slot, the DM-RS starting at a symbol location that is shifted from the pre-defined symbol location and following the subset of symbols. Downlink data scheduled by the PDCCH and received via the PDSCH can be decoded, where the decoding is based on the detected DM-RS.

    Multiplexing of PUCCH for beam failure recovery and other signals
    80.
    发明授权
    Multiplexing of PUCCH for beam failure recovery and other signals 有权

    公开(公告)号：US12199730B2

    公开(公告)日：2025-01-14

    申请号：US18479957

    申请日：2023-10-03

    Applicant: Apple Inc.

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

    IPC: H04B7/06 ,  H04L5/00 ,  H04W52/28 ,  H04W52/32 ,  H04L27/26

    Abstract: Apparatuses, systems, and methods for multiplexing of PUCCH for beam failure recovery and other signals. A UE may determine a transmission dropping rule and a transmission power scaling rule for a PUCCH which is dedicatedly configured for secondary BFR transmission, such as a PUCCH-BFR, when it is multiplexed with BFR multiplexed with at least one other signal. The PUCCH-BFR and the at least one other signal may be multiplexed in a CC or in multiple CCs. The UE may determine a transmission dropping rule, e.g., so that UE can transmit an uplink signal with higher priority and drop the other uplink signal with lower priority to avoid beam collisions. The UE may determine a transmission power scaling rule, e.g., so the UE may scale transmission power within a CC and/or across CCs. The UE may multiplex the PUCCH-BFR with the at least one other signal according to the rules.

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