Techniques for configuring reference signals

    公开(公告)号:US11496276B2

    公开(公告)日:2022-11-08

    申请号:US16904401

    申请日:2020-06-17

    Abstract: Certain aspects of the present disclosure provide techniques for configuring reference signals. A method that may be performed by a user equipment (UE) includes receiving a control message indicating a first quasi co-location (QCL) for an aperiodic-tracking reference signal (A-TRS), the A-TRS being associated with a periodic-tracking reference signal (P-TRS), determining a second QCL for the P-TRS based on the first QCL for the A-TRS, setting a receive beam for reception of the P-TRS based on the second QCL of the P-TRS, and decoding one or more frames based on channel statistics estimated via the P-TRS received via the receive beam.

    ERROR HANDLING IN DUAL ACTIVE LINK HANDOVER

    公开(公告)号:US20220345959A1

    公开(公告)日:2022-10-27

    申请号:US17862130

    申请日:2022-07-11

    Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may perform a dual active link handover procedure from a source base station to a target base station. During the dual active link handover procedure, the UE may have connections to both of the base stations concurrently. In such cases, transmission opportunities for communicating with the base stations may conflict. To handle conflicting transmission opportunities, the UE may drop a monitoring occasion or a packet reception for a base station based on prioritization rules. In some cases, to mitigate packet losses, the base station may configure re-transmissions or slot aggregation to provide the UE with additional opportunities to receive a packet. Additionally or alternatively, the UE may transmit a notification message to a base station indicating dropped monitoring occasions or packets.

    TECHNIQUES FOR APERIODIC BEAM FAILURE DETECTION REFERENCE SIGNALS FOR WIRELESS COMMUNICATIONS SYSTEMS

    公开(公告)号:US20220302983A1

    公开(公告)日:2022-09-22

    申请号:US17207496

    申请日:2021-03-19

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling including a set of parameters. The set of parameters may include one or more thresholds associated with initiating aperiodic beam failure detection (BFD) reference signals (RSs). The UE may receive a set of periodic BFD-RSs. In some examples, the UE or the base station may determine that a triggering threshold is satisfied. In some cases, the UE may determine that the set of periodic BFD-RSs satisfies a consecutive beam failure indication (BFI) threshold, a cumulative BFI threshold, or the like. In some cases, a base station may determine that the set of periodic BFD-RSs satisfies a channel quality threshold. The UE may receive a set of one or more aperiodic BFD-RSs based on whether the triggering threshold is satisfied.

    Transmission configuration indication (TCI) state/beam determination for NR dual active protocol stack (DAPS) handover

    公开(公告)号:US11452017B2

    公开(公告)日:2022-09-20

    申请号:US17004600

    申请日:2020-08-27

    Abstract: In an aspect, the present disclosure includes a method, apparatus, and computer readable medium for wireless communications for connecting, by a user equipment (UE), to a source cell via a first transmission configuration indication (TCI) state; connecting, by the UE, to a target cell via a second TCI state during a handover from the source cell to the target cell; determining, by the UE, whether a first transmission using the first TCI state overlaps in time with a second transmission using the second TCI state; and performing, by the UE, TCI selection between the first beam and the second TCI state based at least in part on the determination of whether the first transmission using the first TCI state overlaps or does not overlap with the second transmission using the second TCI state.

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