Low-layer (DCI or MAC CE) DL puncturing indicator for positioning reference signals (PRS)

    公开(公告)号:US12072428B2

    公开(公告)日:2024-08-27

    申请号:US17640651

    申请日:2020-11-04

    CPC classification number: G01S5/0063 G01S5/0236 H04L5/0051 H04W24/08

    Abstract: During positioning of a user equipment (UE), downlink (DL) positioning reference signals (PRS) transmitted by one or more transmission reception point (TRP) in a wireless communication system may be preempted or punctured by higher priority transmissions, such as ultra-reliable low-latency traffic (URLLC). A PRS preemption indication (PI) may be provided to a UE by a serving TRP identifying one or more TRPs affected by preemption. The PRS PI may further identify the time domain and frequency domain of the preempted DL PRS transmissions. The PRS PI may identify the time domain, e.g., based on a number of PRS symbols between two monitoring occasions, wherein only PRS symbols that contain downlink positioning reference signals associated with the group of TRPs are counted. The PRS PI may identify the frequency domain by identifying at least one of four or more frequency sub-bands of the preempted DL PRS transmissions.

    GUARD PERIODS FOR SOUNDING REFERENCE SIGNAL RESOURCE SETS

    公开(公告)号:US20240171352A1

    公开(公告)日:2024-05-23

    申请号:US18550861

    申请日:2021-05-04

    CPC classification number: H04L5/0051 H04W24/08 H04W72/0446

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive. from a base station, signaling that indicates an indirect assignment of a slot for transmitting sounding reference signals (SRSs) in multiple SRS resource sets. The UE may determine whether the slot is available for the indirect assignment based on a first set of characteristics associated with the multiple SRS resource sets and a second set of characteristics associated with the slot. If the UE determines that the slot is available for the indirect assignment, the UE may transmit SRSs in the multiple SRS resource sets during the slot. If the UE determines that the slot is unavailable for the indirect assignment. the UE may refrain from transmitting SRSs in one or more of the multiple SRS resource sets during the slot.

    User equipment position determination using an uplink random access channel message

    公开(公告)号:US11940546B2

    公开(公告)日:2024-03-26

    申请号:US17310518

    申请日:2020-02-10

    CPC classification number: G01S5/02213 G01S5/06 H04L5/0051 H04W74/0833

    Abstract: In some aspects, a base station may transmit, to a user equipment (UE), an instruction that triggers the UE to transmit an uplink random access channel (RACH) message, the instruction identifying a RACH preamble index corresponding to a RACH preamble to be used for the uplink RACH message; transmit, to a plurality of neighbor base stations, information that identifies the RACH preamble index; receive the uplink RACH message from the UE; receive, from the plurality of neighbor base stations, feedback that indicates respective timings with which the uplink RACH message was received by the plurality of neighbor base stations; and estimate a position of the UE based at least in part on a timing with which the uplink RACH message was received by the base station and at least two of the respective timings with which the uplink RACH message was received by the plurality of neighbor base stations.

Patent Agency Ranking