US 11,641,640 B2Granted

Sidelink-assisted position estimation procedure

AssigneeQUALCOMM Incorporated

InventorsMarwen Zorgui, Srinivas Yerramalli, Xiaoxia Zhang, Piyush Gupta, Rajat Prakash, Junyi Li, Xiaojie Wang, Mohammad Tarek Fahim

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Abstract

Techniques for location determination of user equipment (UE) are provided. In an aspect, a position estimation entity (e.g., UE, gNB, LMF, etc.) identifies a pool of UEs for a SL-assisted position estimation procedure of a set of target UEs. SL SRS-Ps are communicated (e.g., transmitted and measured) between the pool of UEs (e.g., for relative SL ranging). UL SRS-Ps are communicated by at least some of the UEs in the pool of UEs. The position estimation entity obtains measurement data for both the SL SRS-P and UL-SRS-P communications. The position estimation entity determines a position estimate for each UE in the set of UEs based on the measurement information.

Claims28

Dependent claims

A method of operating a position estimation entity, comprising:

identifying a pool of user equipments (UEs) for a sidelink (SL)-assisted position estimation procedure of a set of target UEs;
determining a first resource configuration for the SL-assisted position estimation procedure, the first resource configuration including a first set of resources associated with communication of at least one SL sounding reference signal for positioning (SRS-P) between some or all of the pool of UEs;
determining a second resource configuration for the SL-assisted position estimation procedure, the second resource configuration including a second set of resources associated with transmission of uplink (UL) SRS-P by at least one UE in the pool of UEs;
wherein the first set of resources precedes the second set of resources such that the at least one SL SRS-P is communicated before transmission of the at least one UL SRS-P;
transmitting a first indication of the first resource configuration to the pool of UEs;
transmitting a second indication of the second resource configuration to the at least one UE;
receiving first measurement information based on measurements of the at least one SL SRS-P in accordance with the first resource configuration;
receiving second measurement information based on measurements of the at least one UL SRS-P in accordance with the second resource configuration;
and
determining a position estimate for each UE in the set of UEs based on the first measurement information and the second measurement information.

7 more elements

A position estimation entity, comprising:

a memory;
at least one transceiver;
and
at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor configured to:
identify a pool of user equipments (UEs) for a sidelink (SL)-assisted position estimation procedure of a set of target UEs;
determine a first resource configuration for the SL-assisted position estimation procedure, the first resource configuration including a first set of resources associated with communication of at least one SL sounding reference signal for positioning (SRS-P) between some or all of the pool of UEs;
determine a second resource configuration for the SL-assisted position estimation procedure, the second resource configuration including a second set of resources associated with transmission of uplink (UL) SRS-P by at least one UE in the pool of UEs;
wherein the first set of resources precedes the second set of resources such that the at least one SL SRS-P is communicated before transmission of the at least one UL SRS-P;
transmit, via the at least one transceiver, a first indication of the first resource configuration to the pool of UEs;
transmit, via the at least one transceiver, a second indication of the second resource configuration to the at least one UE;
receive, via the at least one transceiver, first measurement information based on measurements of the at least one SL SRS-P in accordance with the first resource configuration;
receive, via the at least one transceiver, second measurement information based on measurements of the at least one UL SRS-P in accordance with the second resource configuration;
and
determine a position estimate for each UE in the set of UEs based on the first measurement information and the second measurement information.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/387,844Filed 28 Jul 2021
Published: US 2023/0034433 A12 Feb 2023
Granted: 2 May 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

H04W 4/02
Services specially adapted for wireless communication networks; Facilities therefor: services making use of location information
H04W 72/02
Local resource management: selection of wireless resources by user or terminal
G01S 5/0009
Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance…:…
G01S 5/0205
Using radio waves: details