ANTENNA HOPPING FOR REFERENCE SIGNAL MEASUREMENTS IN USER EQUIPMENT (UE) POSITIONING

    公开(公告)号:US20240107486A1

    公开(公告)日:2024-03-28

    申请号:US18263116

    申请日:2022-02-24

    CPC classification number: H04W64/00 H04L5/0051 H04W24/10

    Abstract: Antenna hopping techniques for Positioning Reference Signal (PRS) measurements in positioning of a user equipment (UE) include, for each of a plurality of successive measurement instances, taking a set of measurements of a respective set of PRS resources during the respective measurement instance using only one subset of a plurality of subsets of antennas of the UE, such that different subsets of the plurality of subsets of antennas of the UE are used for different measurement instances of the plurality of successive measurement instances. Each subset comprises one or more, but fewer than all, antennas of the UE. Techniques include sending one or more measurement reports from the UE to a location server. Each of the one or more measurement reports may comprise: information indicative of a respective set of measurements, and a timestamp corresponding to the respective measurement instance during which the respective set of measurements were taken.

    FFT WINDOW ADJUSTMENT BASED ON PRS PEAK PROCESSING

    公开(公告)号:US20230422190A1

    公开(公告)日:2023-12-28

    申请号:US18252033

    申请日:2021-12-13

    CPC classification number: H04W56/001 H04W48/16

    Abstract: A user equipment (UE) associated with a wireless network determines a first reference signal time difference value. The UE determines a first RSTD estimate and a first RSTD uncertainty associated with the first RSTD value, identifies a search interval for the first RSTD value, the search interval extending from a difference between the first RSTD estimate and the first RSTD uncertainty to a sum of the first RSTD estimate and the first RSTD uncertainty, receives wireless signals during the identified search interval, determines a Fast Fourier Transform (FFT) window offset for decoding a first positioning reference signal (PRS) received during the identified search interval, and determines the first RSTD value based at least in part on the determined FFT window offset.

    POSITIONING REFERENCE SIGNAL CONFIGURATIONS FOR CO-LOCATED TRANSMISSION RECEPTION POINTS

    公开(公告)号:US20220400465A1

    公开(公告)日:2022-12-15

    申请号:US17347366

    申请日:2021-06-14

    Abstract: Positioning for user equipments (UEs) in a wireless network is supported by restricting position reference signal (PRS) configuration parameters for a Transmission Reception Point (TRP) based on PRS configuration used by co-located TRPs. The PRS configuration parameters for the TRP may be restricted by restricting orthogonality of the PRS resources with respect to PRS resources from co-located TRPs to only code division multiplexing, and other types of orthogonality such as time division multiplexing and frequency divisional multiplexing are not permitted for co-located TRPs. The PRS configuration parameters for the TRP may be restricted to the same muting sequence type, e.g., inter-instance and/or intra-instance muting, as used by co-located TRPs. The PRS configuration parameters, e.g., related to orthogonality and/or muting, are not restricted with respect to non-co-located TRPs. The restrictions on the PRS configuration parameters for a TRP may be determined by a central authority, such as a location server.

    POSITIONING REFERENCE SIGNAL CONFIGURATIONS FOR CO-LOCATED TRANSMISSION RECEPTION POINTS

    公开(公告)号:US20250031182A1

    公开(公告)日:2025-01-23

    申请号:US18909221

    申请日:2024-10-08

    Abstract: Positioning for user equipments (UEs) in a wireless network is supported by restricting position reference signal (PRS) configuration parameters for a Transmission Reception Point (TRP) based on PRS configuration used by co-located TRPs. The PRS configuration parameters for the TRP may be restricted by restricting orthogonality of the PRS resources with respect to PRS resources from co-located TRPs to only code division multiplexing, and other types of orthogonality such as time division multiplexing and frequency divisional multiplexing are not permitted for co-located TRPs. The PRS configuration parameters for the TRP may be restricted to the same muting sequence type, e.g., inter-instance and/or intra-instance muting, as used by co-located TRPs. The PRS configuration parameters, e.g., related to orthogonality and/or muting, are not restricted with respect to non-co-located TRPs. The restrictions on the PRS configuration parameters for a TRP may be determined by a central authority, such as a location server.

    SYSTEMS AND TECHNIQUES FOR QUASI-ZENITH SATELLITE SYSTEM (QZSS) SIGNAL ACQUISITION

    公开(公告)号:US20240061128A1

    公开(公告)日:2024-02-22

    申请号:US17821084

    申请日:2022-08-19

    CPC classification number: G01S19/07 G01S19/243 G01S19/254 G01S19/256

    Abstract: Systems and techniques are provided for performing Quasi-Zenith Satellite System (QZSS) signal acquisition. For example, an example of a method for performing QZSS signal acquisition includes obtaining a modulated message signal using a frequency band and generating, based on an estimated set of signal acquisition parameters associated with an acquired signal, an energy grid of correlation codes. A series of extracted data bytes can be generated for each respective hypothesis of a plurality of hypotheses, based on a location of a peak energy within the energy grid of correlation codes. A correct hypothesis out of the plurality of hypotheses can be determined, wherein the correct hypothesis is associated with a generated series of extracted data bytes that includes a pre-determined header preamble pattern. The modulated message signal can be decoded using an initial code phase associated with the correct hypothesis.

    USE OF EXISTING RRM MEASUREMENT GAP FOR PRS PROCESSING

    公开(公告)号:US20230132286A1

    公开(公告)日:2023-04-27

    申请号:US17452553

    申请日:2021-10-27

    Abstract: A UE receives a first configuration for at least one RRM measurement gap. The UE receives one or more PRSs prior to the at least one RRM measurement gap. The UE identifies whether a processing availability of the UE during the at least one RRM measurement gap is sufficient to process the one or more PRSs. The UE processes the one or more PRSs, where in response to the processing availability of the UE during the at least one RRM measurement gap, the one or more PRSs are processed during the at least one RRM measurement gap; and in response to lack of the processing availability of the UE sufficient to process the one or more PRSs during the at least one RRM measurement gap, the one or more PRSs are processed, at least in part, outside of the at least one RRM measurement gap.

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