公开(公告)号：US11477754B2

公开(公告)日：2022-10-18

申请号：US16844884

申请日：2020-04-09

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Alexandros Manolakos ,  Guttorm Ringstad Opshaug ,  Joseph Binamira Soriaga ,  Sven Fischer

IPC: H04W64/00 ,  H04L5/00 ,  G01S5/02 ,  H04L25/02 ,  H04W56/00 ,  H04B7/06 ,  G01S5/10

Abstract: Disclosed are methods and apparatuses for resolving aliasing ambiguities produced when using channel state information reference signal, a sounding reference signal (SRS) or other transmission as a positioning reference signal (PRS) occupying a subset of tones of a PRS bandwidth. The aliasing ambiguity results in a plurality of different possible positioning measurements, such as time of arrival (TOA), reference signal timing difference (RSTD), or reception to transmission difference (Rx−Tx). The aliasing ambiguity may be resolved using a previous position estimate that may be used to produce an approximation of the expected positioning measurement. A position estimate may be generated using a multiple stage PRS configuration, in which one or more stages provide a coarse position estimate that has no ambiguity, which can be used to resolve the ambiguity of a more accurate position estimate resulting from the PRS signal.

公开(公告)号：US11470570B2

公开(公告)日：2022-10-11

申请号：US16814971

申请日：2020-03-10

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Alexandros Manolakos ,  Guttorm Ringstad Opshaug ,  Joseph Binamira Soriaga ,  Naga Bhushan

IPC: H04W64/00 ,  H04W56/00

Abstract: Disclosed are techniques for utilizing synchronization signal blocks for positioning operations. In an aspect, a transmission point configures a set of synchronization signal blocks to be used as positioning measurement signals, each of the plurality of synchronization signal blocks comprising a primary synchronization signal, a secondary synchronization signal, and one or more physical broadcast channel signals, and transmits the set of synchronization signal blocks on a wireless downlink channel to enable a user device to perform a positioning measurement of at least one of the set of synchronization signal blocks. In an aspect, the user device receives, from the transmission point, the plurality of synchronization signal blocks on the wireless downlink channel, receives, from the transmission point, an indication of the set of synchronization signal blocks to be used as positioning measurement signals, and performs a positioning measurement of at least one of the set of synchronization signal blocks.

公开(公告)号：US11362921B2

公开(公告)日：2022-06-14

申请号：US16223073

申请日：2018-12-17

Applicant: QUALCOMM Incorporated

Inventor： Naga Bhushan ,  Rayman Wai Pon ,  Stephen William Edge ,  Sven Fischer ,  Guttorm Ringstad Opshaug ,  Jie Wu

IPC: H04L43/0864 ,  H04W24/10 ,  H04W72/04 ,  H04W16/14 ,  H04B17/364 ,  H04W64/00 ,  H04W56/00 ,  H04L1/16 ,  H04B7/0413 ,  H04L1/18

Abstract: Disclosed are techniques for determining round-trip times (RTTs) between a user equipment (UE) and multiple base stations. In an aspect, the UE transmits an RTT measurement signal whose arrival time is measured by each of the base stations, and each of the base stations returns an RTT response signal whose arrival times are measured by the UE. In another aspect, the base stations each transmit an RTT measurement signal and the UE returns an RTT response signal. The receiver of the RTT measurement signal may include the measured arrival time in a payload of the RTT Response signal. Alternatively, the measured arrival time(s) of the RTT Measurement signal(s) and the transmission time(s) of the RTT Response signal(s) are sent in a separate message. The RTT signals can be wideband signals using low reuse resources.

公开(公告)号：US10944659B2

公开(公告)日：2021-03-09

申请号：US16581141

申请日：2019-09-24

Applicant: QUALCOMM Incorporated

Inventor： Alexandres Manolakos ,  Sony Akkarakaran ,  Guttorm Ringstad Opshaug ,  Joseph Binamira Soriaga ,  Tao Luo

IPC: H04L12/26 ,  H04L5/00 ,  G01S5/02 ,  G01S5/06

Abstract: Disclosed are techniques for receiving reference radio frequency (RF) signals for positioning estimation. In an aspect, a receiver device receives, from a transmission point, a reference RF signal on a wireless channel receives, from a positioning entity, an indication that the reference RF signal serves as a source for a quasi-collocation (QCL) type(s) for positioning reference RF signals received by the receiver device from the transmission point on the wireless channel, measures an average delay, a delay spread, or both the average delay and the delay spread of the reference RF signal based on the QCL type(s), receives, from the transmission point, a positioning reference RF signal on the wireless channel, and identifies a time of arrival (ToA) of the positioning reference RF signal based on the measured average delay, the delay spread, or both the average delay and the delay spread of the reference RF signal.

公开(公告)号：US20200296551A1

公开(公告)日：2020-09-17

申请号：US16813345

申请日：2020-03-09

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Sony Akkarakaran ,  Guttorm Ringstad Opshaug ,  Sven Fischer ,  Joseph Binamira Soriaga ,  Tao Luo ,  Juan Montojo ,  Peter Gaal

IPC: H04W4/029 ,  H04B17/345 ,  H04W24/08

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may report measurements of a signal transmitted by a base station via a waveform. Based on the waveform, the base station may determine a position of the UE. The UE may measure the signal in a frequency band, where additional signaling in an adjacent frequency band causes interference on the signal. The UE may determine characteristics for measuring the signal based on the interference and may generate samples of the signal based on the measurement characteristics. Additionally, the UE may identify one or more antennas for measuring the signal and generate the samples based on the identified antennas. The UE may transmit the waveform report to the base station based on the samples. In some cases, the waveform may be based on a fractional symbol reporting scheme or a time mask with an offset and sampling rate.

公开(公告)号：US10560942B2

公开(公告)日：2020-02-11

申请号：US16011767

申请日：2018-06-19

Applicant: QUALCOMM Incorporated

Inventor： Guttorm Ringstad Opshaug ,  Stephen William Edge ,  Jie Wu ,  Rayman Wai Pon ,  Naga Bhushan ,  Sven Fischer

IPC: H04W72/04 ,  H04W64/00 ,  H04L5/00 ,  H04W84/04

Abstract: A reference signal may provide for enhanced bandwidth utilization to enable highly accurate position determination with relatively low bandwidth. For a given allocated bandwidth, a reference signal may use of only a portion of the allocated bandwidth by using plurality of sub-bands. In some cases, the sub-bands may be near the edges of the allocated band to maximize Gabor bandwidth.

公开(公告)号：US10469217B2

公开(公告)日：2019-11-05

申请号：US16053112

申请日：2018-08-02

Applicant: QUALCOMM Incorporated

Inventor： Guttorm Ringstad Opshaug ,  Stephen William Edge ,  Sven Fischer ,  Naga Bhushan ,  Rayman Wai Pon ,  Jie Wu

IPC: G01S5/10 ,  H04L5/00 ,  H04W72/04 ,  G01S19/13 ,  H04W16/14

Abstract: Many mobile devices and mobile networks utilize orthogonal frequency division multiplexing (OFDM) to calculate position information of mobile devices within the network. However, the Doppler Effect and other noise or obstructions can cause OFDM signals to become entangled, particularly when the mobile device is moving, making the calculated position information inaccurate. Described herein are systems and methods for disentangling the OFDM signals by calculating a symbol length for the signals that is longer than the minimum symbol length, which is used in traditional OFDM. Selecting a longer symbol length reduces the Doppler Effect and other noise on the signals, making positioning calculations more accurate.

公开(公告)号：US12273286B2

公开(公告)日：2025-04-08

申请号：US16746594

申请日：2020-01-17

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Joseph Binamira Soriaga ,  Sony Akkarakaran ,  Guttorm Ringstad Opshaug ,  Sven Fischer

IPC: H04L5/00 ,  H04W4/029 ,  H04W24/08 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of a positioning reference signal configuration of a base station. The UE may determine, based on the positioning reference signal configuration, a reference point within a carrier bandwidth of a component carrier and a frequency domain allocation for a positioning reference signal relative to the reference point. The UE may transmit the positioning reference signal or measure the positioning reference signal based on the frequency domain allocation.

公开(公告)号：US11997563B2

公开(公告)日：2024-05-28

申请号：US15593153

申请日：2017-05-11

Applicant: QUALCOMM Incorporated

Inventor： Guttorm Ringstad Opshaug ,  Sven Fischer ,  Stephen William Edge

IPC: H04W4/02 ,  G01S5/00 ,  G01S5/10 ,  H04W24/08 ,  H04W72/04 ,  G01S5/02 ,  G01S19/25 ,  G01S19/42 ,  G01S19/46

CPC classification number: H04W4/023 ,  G01S5/0036 ,  G01S5/10 ,  G01S5/0236 ,  G01S19/25 ,  G01S19/42 ,  G01S19/46

Abstract: A mobile station performs Observed Time Difference of Arrival (OTDOA) positioning by measuring a time of arrival (TOA) of downlink signals transmitted from a reference cell and one or more neighbor cells. Reference Signal Time Differences (RSTDs) are generated using TOA measurements from the reference cell and each neighbor cell. The mobile station reports to a location server location information, including the RSTD measurements and the times of measurement for the TOA measurements. The mobile station may further generate and report additional RSTD and/or TOA measurements and associated times of measurement for the reference cell and/or neighbor cells. A location server may use the RSTD measurements, the times of measurement and any TOA measurements to determine a position of the mobile station taking into account user motion and base station clock drift and/or may adjust the uncertainty of the resulting position.

公开(公告)号：US11910392B2

公开(公告)日：2024-02-20

申请号：US17374580

申请日：2021-07-13

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Mukesh Kumar ,  Guttorm Ringstad Opshaug ,  Srinivas Yerramalli

IPC: H04W72/21 ,  H04W24/08 ,  H04L5/00 ,  H04W72/0453

CPC classification number: H04W72/21 ,  H04L5/0051 ,  H04W24/08 ,  H04W72/0453

Abstract: Disclosed are various techniques for wireless communication. In an aspect, a user equipment (UE) transmits, to a serving base station, in one or more active bandwidth parts (BWPs) of the UE, a request for a no-downlink-scheduling gap, the request including at least time-domain parameters related to scheduling the no-downlink-scheduling gap, receives, from a neighboring base station, in the one or more active BWPs, a downlink positioning reference signal (DL-PRS) during the no-downlink-scheduling gap, and transmits, in the one or more active BWPs, an uplink positioning reference signal (UL-PRS) during the no-downlink-scheduling gap in response to reception of the DL-PRS.