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

    公开(公告)号:US11841449B2

    公开(公告)日:2023-12-12

    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.

    Positioning signal frequency hop aggregation

    公开(公告)号:US11792607B2

    公开(公告)日:2023-10-17

    申请号:US17348407

    申请日:2021-06-15

    CPC classification number: H04W4/029 G01S5/0244 G01S5/10 H04L5/0048 H04B1/713

    Abstract: A method of facilitating position determination of a user equipment includes: receiving, at the user equipment, a first plurality of positioning reference signal portions having a corresponding plurality of frequency sub-bands; processing, at the user equipment, one or more of the first plurality of positioning reference signal portions to determine position information; and at least one of: transmitting a capability message, to a network entity, indicating a processing capability of the user equipment to process, in combination, positioning reference signal portions having different frequency sub-bands to determine the position information; or transmitting a signal-combination indication, to the network entity, indicating a second plurality of positioning reference signal portions, of the first plurality of positioning reference signal portions, processed by the user equipment in combination to determine the position information.

    Reporting of information related to sounding reference signals (SRS) timing adjustments

    公开(公告)号:US11751082B2

    公开(公告)日:2023-09-05

    申请号:US16872599

    申请日:2020-05-12

    CPC classification number: H04W24/10 H04W72/21

    Abstract: Disclosed are techniques for wireless communication. In an aspect, a UE transmits, at a first time during a measurement window for positioning purposes, a first uplink reference signal in accordance with a first timing adjustment parameter, wherein the first time is offset from a downlink frame time of a base station by an amount of the first timing adjustment parameter, determines whether to use a second timing adjustment parameter, transmits, in response to the determination to use the second timing adjustment parameter, at a second time during the measurement window, a second uplink reference signal in accordance with a second timing adjustment parameter, wherein the second time is offset from the downlink frame time of the base station by an amount of the second timing adjustment parameter, and transmits a report indicating that the second timing adjustment parameter has been applied to at least the second uplink reference signal.

    Systems and methods for storage of UE positioning capabilities in a network

    公开(公告)号:US11630181B2

    公开(公告)日:2023-04-18

    申请号:US17710792

    申请日:2022-03-31

    Abstract: The positioning capabilities of a User Equipment (UE) are stored in a core network to reduce positioning latency when the UE indicates that its positioning capabilities are stable and/or are long term valid. The UE may provide its positioning capabilities to a location server during a location session along with an indication of whether the positioning capabilities are stable. The location server may enable storage of the positioning capabilities for the UE in the core network, e.g., in the location server or another entity in the core network such as Access and Mobility Management Function (AMF), if there is an indication that the positioning capabilities are stable. The AMF may include a UE identifier in location requests with which the location server may retrieve the UE positioning capabilities if stored at the location server or may include the UE positioning capabilities if stored at the AMF.

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