Method and apparatus for 5G positioning accuracy improvement in presence of phase noise

    公开(公告)号:US11879988B2

    公开(公告)日:2024-01-23

    申请号:US17869394

    申请日:2022-07-20

    CPC classification number: G01S5/0221 H04W64/00

    Abstract: A mobile device and base station are enabled to support improved positioning accuracy in the presence of phase noise in high frequency radio network, such as in 5G New Radio network operating in mmWave. Phase Tracking Reference Signal (PTRS) may be transmitted with Positioning Reference Signals (PRS) and used for positioning and/or used to correct the phase offset between symbols in the PRS. A request may be made to transmit PTRS alone or with the PRS, or that the PRS is transmitted with a specific PRS frame structure, e.g., with a specific comb value, that minimizes the impact of phase noise. The PTRS or a phase ramp of the staggered symbols in the PRS may be used to estimate and correct the phase offset. Less than all of the symbols transmitted in the PRS may be used to generate positioning measurements to minimize the impact of phase noise.

    Base station location and orientation computation procedure

    公开(公告)号:US11811462B2

    公开(公告)日:2023-11-07

    申请号:US17482147

    申请日:2021-09-22

    CPC classification number: H04B17/27 H04W64/003

    Abstract: Techniques are provided for utilizing network positioning protocols to perform a base station location and orientation computation procedure. An example method of determining an orientation of a base station antenna with a network server includes receiving measurement values from a base station based on uplink reference signals transmitted by a plurality of reference location devices, obtaining location information for the plurality of reference location devices, and determining the orientation of the base station antenna based on the measurement values and the location information.

    System and methods for rapid round-trip-time measurement distribution

    公开(公告)号:US11606705B2

    公开(公告)日:2023-03-14

    申请号:US16526546

    申请日:2019-07-30

    Abstract: Disclosed are techniques for determining round-trip time (RTT) of a user equipment (UE). In an aspect, each gNodeB in a plurality of gNodeBs measure signaling data related to an uplink RTT reference signal received from the UE and the downlink RTT reference signal transmitted by each gNodeB. The signaling data comprises one of a processing delay between a time of arrival (TOA) of the uplink RTT reference signal and a time of transmission (TOT) of the downlink RTT reference signal or a total RTT between the TOT of the downlink RTT reference signal and the TOA of the uplink RTT reference signal. The signaling data is sent to a single entity, other than the UE, e.g., another gNodeB or a location server, where signaling data relevant to the UE is aggregated. The aggregated signaling data may be sent to the UE to determine the RTT for the UE or used by the location server to determine the RTT for the UE.

    Measurement period formulation for positioning reference signal (PRS) processing

    公开(公告)号:US11463221B2

    公开(公告)日:2022-10-04

    申请号:US17205838

    申请日:2021-03-18

    Abstract: Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives a positioning reference signal (PRS) configuration for at least a first transmission-reception point (TRP), the PRS configuration including one or more repetitions of one or more PRS resources within a PRS resource set of a PRS instance associated with the TRP, beam sweeps one or more receive beams within the PRS instance based on a number of the one or more repetitions being greater than a number of repetitions of the one or more PRS resources needed to meet an accuracy requirement, and beam sweeps the one or more receive beams across a plurality of PRS instances associated with the TRP based on the number of the one or more repetitions not being greater than the number of repetitions of the one or more PRS resources needed to meet the accuracy requirement.

    SYSTEMS AND METHODS FOR BEAM GROUP REPORTING FOR NEW RADIO POSITIONING

    公开(公告)号:US20220312364A1

    公开(公告)日:2022-09-29

    申请号:US17833627

    申请日:2022-06-06

    Abstract: This disclosure provides methods, devices, and systems for beam group reporting for positioning in new radio (NR) wireless communications systems. In some wireless communications systems, multiple PRS resources, e.g., a beam group, received by a user equipment (UE) from the same network entity may be used to produce a combined Time of Arrival (TOA) measurement for the reference or target to derive an Reference Signal Time Difference (RSTD) estimate. The UE provides to a network entity an indication of the PRS resources in the beam group, which may be specifically or generally identified. Additionally, parameters associated with the beam group are provided, such as a relative quality of the TOA measurement for each PRS resource in the subset, a spread of the TOA measurements in the subset, a relative signal strength of each PRS resource in the subset, or a spread of the signal strength in the subset.

    METHOD AND APPARATUS FOR POWER AND PROCESSING SAVINGS FOR POSITIONING REFERENCE SIGNALS TRANSMITTED IN BEAMS

    公开(公告)号:US20220210760A1

    公开(公告)日:2022-06-30

    申请号:US17523815

    申请日:2021-11-10

    Abstract: A mobile device supports positioning with positioning reference signals (PRS) on multiple beam by dividing the PRS processing into two separate modes, an acquisition mode and a tracking mode. In acquisition mode, the mobile device performs a fast scan of all of the beams from a base station transmitting PRS using less than the full set of resources for the PRS, i.e., less than the full bandwidth and/or less than the full number of repetitions of the PRS. The mobile device may select the best beams to use for positioning, e.g., based on signal strength metric. In tracking mode, the mobile device tracks the PRS from only the selected beams using the full set of resources for the PRS. The mobile device may return to acquisition mode after a predetermined number of positioning occasions or if the selected beams are no longer valid due to movement or change in conditions.

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