Vehicle-to-pedestrian positioning with user equipment and network assistance

Patent metadata

Field	Value
Publication number	US-2022014872-A1
Application number	US-202117302844-A
Country	US
Kind code	A1
Filing date	May 13, 2021
Priority date	Jul 7, 2020
Publication date	Jan 13, 2022
Grant date	—

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may receive a first set of ranging measurements based at least in part on a first one or more positioning reference signals communicated over a sidelink between a pedestrian user equipment (P-UE) and a vehicle UE (V-UE). The network node may receive a second set of ranging measurements based at least in part on a second one or more positioning reference signals communicated over an access link between the P-UE and one or more base stations. The network node may transmit, to the P-UE, an estimated position of the P-UE. For example, in some aspects, the estimated position of the P-UE may be based at least in part on the first set of ranging measurements and the second set of ranging measurements. Numerous other aspects are provided.

First claim

What is claimed is:

1 . A method of wireless communication performed by a network node, comprising:
receiving a first set of ranging measurements based at least in part on a first one or more positioning reference signals communicated over a sidelink between a pedestrian user equipment (P-UE) and a vehicle UE (V-UE); receiving a second set of ranging measurements based at least in part on a second one or more positioning reference signals communicated over an access link between the P-UE and one or more base stations; and transmitting, to the P-UE, an estimated position of the P-UE, wherein the estimated position of the P-UE is based at least in part on the first set of ranging measurements and the second set of ranging measurements.

2 . The method of claim 1 , further comprising:
determining a first position estimate for the P-UE based at least in part on the first set of ranging measurements and an estimated position of the V-UE; and determining a second position estimate for the P-UE based at least in part on the second set of ranging measurements and positions of the one or more base stations, wherein the estimated position of the P-UE is based at least in part on the first position estimate and the second position estimate.

3 . The method of claim 1 , further comprising:
receiving a request for positioning information from the P-UE, wherein the estimated position of the P-UE is transmitted to the P-UE based at least in part on the request for positioning information.

4 . The method of claim 3 , wherein the request for positioning information indicates a periodic reporting interval, and wherein the estimated position of the P-UE is transmitted to the P-UE based at least in part on the periodic reporting interval expiring.

5 . The method of claim 3 , further comprising:
determining an estimated position of the V-UE based at least in part on ranging measurements associated with positioning reference signals communicated over a sidelink between the V-UE and one or more other P-UEs; and transmitting, to the P-UE, the estimated position of the V-UE based at least in part on the request for positioning information including a request for positioning information associated with the V-UE.

6 . The method of claim 5 , wherein the request for positioning information indicates a periodic reporting interval, and wherein the estimated position of the P-UE and the estimated position of the V-UE are transmitted to the P-UE based at least in part on the periodic reporting interval expiring.

7 . The method of claim 1 , further comprising:
receiving, from the P-UE, a message configuring one or more triggering events for reporting positioning information to the P-UE, wherein one or more of the estimated position of the P-UE or an estimated position of the V-UE are transmitted to the P-UE based at least in part on an occurrence of the one or more triggering events.

8 . The method of claim 7 , wherein the one or more triggering events include one or more of:
a variance between one or more parameters included in the first set of ranging measurements and one or more parameters included in the second set of ranging measurements satisfying a first threshold, receiving an initial reporting of the first set of ranging measurements from the P-UE, or a distance between the estimated position of the P-UE and the estimated position of the V-UE or one or more other V-UEs satisfying a second threshold.

9 . A method of wireless communication performed by a pedestrian user equipment (P-UE), comprising:
transmitting, to a network node, a first set of ranging measurements based at least in part on a first one or more positioning reference signals communicated over a sidelink between the P-UE and a vehicle UE (V-UE); transmitting, to one or more base stations, a second set of ranging measurements based at least in part on a second one or more positioning reference signals communicated over an access link between the P-UE and the one or more base stations; and receiving, from the network node, an estimated position of the P-UE, wherein the estimated position of the P-UE is based at least in part on the first set of ranging measurements and the second set of ranging measurements.

10 . The method of claim 9 , further comprising:
transmitting an estimated position of the V-UE to the network node, wherein the estimated position of the P-UE is further based at least in part on the estimated position of the V-UE and positions of the one or more base stations.

11 . The method of claim 9 , further comprising:
transmitting a request for positioning information to the network node, wherein the estimated position of the P-UE is received from the network node based at least in part on the request for positioning information.

12 . The method of claim 11 , wherein the request for positioning information indicates a periodic reporting interval, and wherein the estimated position of the P-UE is received from the network node based at least in part on the periodic reporting interval expiring.

13 . The method of claim 11 , further comprising:
receiving, from the network node, an estimated position of the V-UE based at least in part on the request for positioning information including a request for positioning information associated with the V-UE.

14 . The method of claim 13 , wherein the request for positioning information indicates a periodic reporting interval, and wherein the estimated position of the P-UE and the estimated position of the V-UE are received from the network node based at least in part on the periodic reporting interval expiring.

15 . The method of claim 11 , wherein the request for positioning information is transmitted to the network node based at least in part on a variance associated with one or more local sensors satisfying a first threshold, or based at least in part on a variance associated with the first set of ranging measurements satisfying a second threshold.

16 . The method of claim 11 , wherein the request for positioning information is transmitted to the network node based at least in part on receiving one or more basic safety messages indicating a presence of one or more V-UEs.

17 . The method of claim 9 , further comprising:
transmitting, to the network node, a message configuring one or more triggering events for reporting positioning information to the P-UE, wherein one or more of the estimated position of the P-UE or an estimated position of the V-UE are received from the network node based at least in part on an occurrence of the one or more triggering events.

18 . The method of claim 17 , wherein the one or more triggering events include one or more of:
a variance between one or more parameters included in the first set of ranging measurements and one or more parameters included in the second set of ranging measurements satisfying a first threshold, receiving an initial reporting of the first set of ranging measurements from the P-UE, or a distance between the estimated position of the P-UE and the estimated position of the V-UE or one or more other V-UEs satisfying a second threshold.

19 . A network node for wireless communication, comprising:
a transceiver; a memory; and one or more processors, coupled to the transceiver and the memory, configured to:
receive, via the transceiver, a first set of ranging measurements based at least in part on a first one or more positioning reference signals communicated over a sidelink between a pedestrian user equipment (P-UE) and a vehicle UE (

Assignees

• Qualcomm Inc

Inventors

• Balasubramanian Anantharaman
• Gulati Kapil
• Choi Chang-Sik

Classifications

• H04W92/18

  between terminal devices · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04W4/20

  Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel · CPC title

• H04W4/40

  for vehicles, e.g. vehicle-to-pedestrians [V2P] · CPC title

• G01S2205/01

  specially adapted for specific applications · CPC title