公开(公告)号：US20200383083A1

公开(公告)日：2020-12-03

申请号：US16994492

申请日：2020-08-14

Applicant: QUALCOMM Incorporated

Inventor： Stephen William EDGE ,  Nathan TENNY ,  Sven FISCHER

IPC: H04W64/00 ,  G01S5/00 ,  G01S5/02 ,  H04L29/08

Abstract: Techniques for supporting positioning for a terminal (sometimes referred to herein as a target device) in a wireless network are described. In an aspect, positioning for a target device includes receiving a Request Location Information message, for a server, that includes a first information element and a second information element, wherein the first information element includes at least one field that is common to multiple positioning methods and wherein the at least one field comprises a quality-of-service (QoS), an indication of whether periodic location information is requested, an indication of whether triggered location information is requested, or any combination thereof, wherein the second information element includes at least one field that is specific to a first positioning method, and performing positioning in response to the Request Location Information message.

公开(公告)号：US20200344712A1

公开(公告)日：2020-10-29

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 ,  G01S5/10 ,  H04W56/00 ,  H04B7/06 ,  H04L25/02

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：US20200267683A1

公开(公告)日：2020-08-20

申请号：US16788188

申请日：2020-02-11

Applicant: QUALCOMM Incorporated

Inventor： Stephen William EDGE ,  Sven FISCHER ,  Guttorm Ringstad OPSHAUG

IPC: H04W64/00 ,  H04L5/00 ,  H04W24/10 ,  H04L12/841 ,  H04W72/04 ,  H04W4/029

Abstract: A user equipment (UE) periodically obtains its location using UE based Observed Time Difference of Arrival (OTDOA). The location is based on Reference Signal Time Differences (RSTDs) measured by the UE for downlink (DL) signals transmitted by each of a plurality of base stations, and the most current Real Time Differences (RTDs) for pairs of base stations. The RTDs may be determined by the UE using the RSTD measurements and Round Trip Time (RTT) measurements determined by a network entity or by the UE. The RTDs may be determined less frequently than the UE location to reduce network and UE load. Location of the UE may be improved based on testing a rate of change for each of the RTDs. The RTD determination may be improved using measurements from a plurality of UEs.

公开(公告)号：US20200228381A1

公开(公告)日：2020-07-16

申请号：US16739067

申请日：2020-01-09

Applicant: QUALCOMM Incorporated

Inventor： Alexandros MANOLAKOS ,  Sony AKKARAKARAN ,  Sven FISCHER ,  Guttorm Ringstad OPSHAUG

IPC: H04L27/26 ,  H04W64/00

Abstract: Disclosed are methods and apparatuses for providing configurable reference signal timing difference (RSTD) search windows for positioning. In an aspect, an RSTD search window is configured based on a positioning reference signal (PRS) configuration. The RSTD search window is provided to the UE. A plurality of PRS is transmitted from a network entity to a user equipment (UE), each PRS having the PRS configuration. The plurality of PRS are transmitted in a subset that is less than all subcarriers over a given bandwidth.

公开(公告)号：US20200178202A1

公开(公告)日：2020-06-04

申请号：US16782119

申请日：2020-02-05

Applicant: QUALCOMM Incorporated

Inventor： Stephen William EDGE ,  Sven FISCHER ,  Rayman PON

IPC: H04W64/00 ,  H04W24/10 ,  H04B7/08 ,  G01S5/10 ,  H04W4/029 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0417 ,  G01S5/02 ,  G01S1/04 ,  H04L5/00 ,  H04L1/02 ,  H04L1/04 ,  H04W16/28

Abstract: Techniques are provided for positioning of a mobile device in a wireless network using directional positioning reference signals (PRS), also referred to as PRS beamforming. In an example method, a plurality of directional PRSs are generated for at least one cell for a base station, such that each of the plurality of directional PRSs comprises at least one signal characteristic and a direction of transmission, either or both of which may be distinct or unique. The plurality of directional PRSs is transmitted within the at least one cell, such that each of the plurality of directional PRSs is transmitted in the direction of transmission. A mobile device may acquire and measure at least one of the directional PRSs which may be identified using the associated signal characteristic. The measurement may be used to assist position methods such as OTDOA and ECID and to mitigate multipath.

公开(公告)号：US20200162849A1

公开(公告)日：2020-05-21

申请号：US16716799

申请日：2019-12-17

Applicant: QUALCOMM Incorporated

Inventor： Stephen William EDGE ,  Luis Fernando Brisson LOPES ,  Sven FISCHER

IPC: H04W4/029 ,  G01S5/02

Abstract: Techniques are disclosed in which generic position methods in a wireless network allow positioning of a target user equipment (UE) that is served by any one (or more) of a number of different Radio Access Technologies (RATs) and that allow measurements by the UE of access nodes belonging to different RATs and/or measurements of the UE by access nodes for different RATs. With a generic position method, a common set of procedures, messages, and parameters may be defined that are applicable to multiple RATs and that do not require a location server to know in advance the serving RAT for a target UE.

公开(公告)号：US20200053703A1

公开(公告)日：2020-02-13

申请号：US16536032

申请日：2019-08-08

Applicant: QUALCOMM Incorporated

Inventor： Sony AKKARAKARAN ,  Tao LUO ,  Junyi LI ,  Guttorm Ringstad OPSHAUG ,  Joseph Binamira SORIAGA ,  Alexandros MANOLAKOS ,  Sven FISCHER

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/12 ,  G01S5/06

Abstract: Disclosed are techniques for performing positioning operations. In an aspect, a user equipment (UE) receives a downlink physical channel from a base station, the downlink physical channel received via one or more slots of one or more subframes of one or more radio frames, the downlink physical channel carrying user data and/or control information from the base station to the UE, receives, from the base station, an indication that the base station will transmit reference signals for positioning on the downlink physical channel, and performs a positioning measurement of a reference signal received on the downlink physical channel.

公开(公告)号：US20190313416A1

公开(公告)日：2019-10-10

申请号：US16046253

申请日：2018-07-26

Applicant: QUALCOMM Incorporated

Inventor： Guttorm Ringstad OPSHAUG ,  Rayman Wai PON ,  Jie WU ,  Naga BHUSHAN ,  Sven FISCHER ,  Stephen William EDGE

IPC: H04W72/08 ,  H04L5/00 ,  H04W72/04 ,  H04W4/02

Abstract: Mobile devices often use orthogonal frequency division multiplexing (OFDM) to calculate position information of mobile devices within the network. However, physical distance between the mobile device and a signal source for positioning and other environmental factors can influence the signal strength of received signals. Received signals at the mobile device that are stronger may drown out the weaker signals, particularly when two signal sources occupy the same symbol. In traditional OFDM, a signal source transmits the same symbol for each positioning occasion, so a weaker signal may never be detected over a stronger signal, reducing the accuracy of the positioning calculations. Described herein are systems and methods for using a pattern to vary the designated symbol for each signal source in a wireless network so that a weaker signal from a signal source may be detected on at least some of the positioning occasions.

公开(公告)号：US20190305901A1

公开(公告)日：2019-10-03

申请号：US16107713

申请日：2018-08-21

Applicant: QUALCOMM Incorporated

Inventor： Guttorm Ringstad OPSHAUG ,  Sven FISCHER ,  Naga BHUSHAN ,  Stephen William EDGE ,  Jie WU ,  Rayman Wai PON

IPC: H04L5/00 ,  H04W64/00 ,  G01S5/10 ,  H04W72/04

Abstract: Methods, apparatuses, and computer-readable media are described. In one example, a method, on a base station, for providing position measurements signals in a wireless communication network, comprises: determining a plurality of subcarriers for downlink transmission, wherein the plurality of subcarriers for downlink transmission comprise all subcarriers indicated in a resource block of a scheduled time of transmission within a scheduled transmission occasion, wherein the resource block comprises a plurality of symbol periods, wherein each symbol period of the plurality of symbol periods is for transmission of a symbol using one or more subcarriers of the plurality of subcarriers; and transmitting at the scheduled time of transmission, and using each subcarrier of the plurality of subcarriers, a wireless position measurement signal at the scheduled transmission occasion, the wireless position measurement signal being part of a sequence of wireless signals representing a position measurement signal bitstream.

公开(公告)号：US20190268725A1

公开(公告)日：2019-08-29

申请号：US16261367

申请日：2019-01-29

Applicant: QUALCOMM Incorporated

Inventor： Stephen William EDGE ,  Sven FISCHER

IPC: H04W4/029 ,  H04W4/06

Abstract: Techniques are discussed herein for efficiently supporting broadcast of location assistance data (AD) in a wireless network to assist in locating a user equipment (UE). A location server (LS) may send some location AD, which may be optionally ciphered, to base stations for broadcast in cells supported by the base stations. Capability information provided by a UE to the LS indicating a level of support by the UE for receiving broadcast AD and supporting ciphering may enable the LS to determine whether, and what type of, additional AD needs to be sent to the UE by point to point means. An LS may use capability information received from a large number of UEs to assist in determining the types of location assistance data to be broadcast and usage of ciphering.