BLIND DECODING LIMITS FOR DUAL ACTIVE PROTOCOL STACK (DAPS) HANDOVER

    公开(公告)号:US20210144599A1

    公开(公告)日:2021-05-13

    申请号:US17065216

    申请日:2020-10-07

    Abstract: This disclosure provides systems, methods and apparatus including computer programs encoded on computer storage media, for a user equipment (UE) to determine and apply limits to physical downlink control channel (PDCCH) processing in a dual active protocol stack handover scenario. In one aspect, the UE utilizes a joint blind decode capability for both a source cell group and a target cell group to determine whether a total limit for PDCCH candidates to monitor or non-overlapped control channel elements (CCEs) to monitor is applicable. The UE may identify a per cell limit for each configured single transmit receive point (TRP) cell and each multiple TRP cell based on a sub-carrier spacing SCS of the cell and the determination. The UE may include an interface configured to obtain a PDCCH for a slot. The UE may perform blind decoding operations on CCEs up to the per cell monitoring limit for each cell.

    HALF-DUPLEX USER EQUIPMENT OPERATION IN NEW RADIO FREQUENCY DIVISION DUPLEXED BANDS

    公开(公告)号:US20210135832A1

    公开(公告)日:2021-05-06

    申请号:US16949305

    申请日:2020-10-23

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a guard period associated with switching from a first communication mode to a second communication mode. The UE may be operating in a half-duplex frequency division duplexing mode of operation. The guard period may be determined based at least in part on at least one of: a number of phased locked loops to be used for the first communication mode and the second communication mode, and a particular subcarrier spacing associated with the UE. The UE may switch from the first communication mode to the second communication mode based at least in part on the guard period. Numerous other aspects are provided.

    CLARIFICATION ON CUMULATIVE TIMING ADVANCE (TA)

    公开(公告)号:US20210105732A1

    公开(公告)日:2021-04-08

    申请号:US17026538

    申请日:2020-09-21

    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encored on computer storage media, for fifth generation (5G)-new radio (NR) physical layer (PHY) timing synchronization. In one aspect, a user equipment (UE) computing device may determine a new timing advance (TA) between downlink frames and uplink frames (NTA_new) for a base station (BS) and determine whether the NTA_new may be within a timing advance acceptable range. In another aspect, a BS may determine a timing advance command (TA) for a timing advance group (TAG) for the BS, and send the TA to the UE computing device. In determining the timing advance command, the TA may be configured by the BS to cause the UE computing device to determine that a new timing advance between downlink frames and uplink frames (NTA_new) for the BS using the TA is within a timing advance acceptable range.

    RANDOM ACCESS PUSCH ENHANCEMENTS
    245.
    发明申请

    公开(公告)号:US20210084689A1

    公开(公告)日:2021-03-18

    申请号:US17020778

    申请日:2020-09-14

    Inventor: Hung Dinh LY

    Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may identify an aggregation parameter for a Physical Uplink Shared Channel (PUSCH) transmission in a random access procedure, determine a repetition level for the PUSCH transmission based on the aggregation parameter, and transmit, as part of the random access procedure, the PUSCH transmission according to the repetition level. A base station may determine a repetition level for a Physical Uplink Shared Channel (PUSCH) transmission in a random access procedure, transmit, to a user equipment (UE), an aggregation parameter indicating the repetition level, and receive, as part of the random access procedure, the PUSCH transmission according to the repetition level.

    TRANSMISSION CONFIGURATION INDICATION (TCI) STATE/BEAM DETERMINATION FOR NR DUAL ACTIVE PROTOCOL STACK (DAPS) HANDOVER

    公开(公告)号:US20210068021A1

    公开(公告)日:2021-03-04

    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.

    RANDOM ACCESS CHANNEL (RACH)-LESS TIMING ADVANCE DETERMINATION

    公开(公告)号:US20200267609A1

    公开(公告)日:2020-08-20

    申请号:US16794091

    申请日:2020-02-18

    Abstract: This disclosure provides systems, methods and apparatus for determining a target base station timing advance value between a user equipment (UE) and target base station in connection with a random access channel (RACH)-less handover procedure. In one aspect, the UE may determine the target base station's timing advance based at least in part on a timing difference between the target base station and the source base station and based at least in part on a timing offset associated with an uplink and a downlink of the UE. In some aspects, the target base station may determine the timing advance using an uplink reference signal of the UE. In some aspects, the UE may report a timing difference between the target base station and the source base station, and the source cell may determine a timing advance based at least in part on the timing difference.

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