Sidelink-assisted positioning
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to another UE, a positioning request associated with a procedure for determining a position of the UE, wherein the positioning request comprises a first sidelink communication between a first sidelink location management component (S-LMC) of the UE and a second S-LMC of the other UE, wherein the first S-LMC and the second S-LMC comprise sub-functions associated with a vehicle-to-everything protocol layer; receive, from the other UE, a second sidelink communication associated with the procedure for determining the position of the UE; and determine the position of the UE based at least in part on the second sidelink communication. Numerous other aspects are provided.
1 . A user equipment (UE) for wireless communication, comprising:
one or more memories;
a transceiver; and
one or more processors coupled to the one or more memories and the transceiver, the one or more processors configured to:
transmit, via the transceiver to another UE, a positioning request associated with a procedure for determining a position of the UE, wherein:
the positioning request comprises a first sidelink communication between a first sidelink location management component (S-LMC) of the UE and a second S-LMC of the other UE;
the first S-LMC and the second S-LMC comprise sub-functions associated with a vehicle-to-everything protocol layer; and
each of the first S-LMC and the second S-LMC supports:
a capability request operation associated with the procedure for determining the position of the UE, and
a capability response operation associated with the procedure for determining the position of the UE;
receive, via the transceiver from the other UE, a second sidelink communication associated with the procedure for determining the position of the UE; and
determine the position of the UE based at least in part on the second sidelink communication.
2 . The UE of claim 1 ,
wherein each of the first S-LMC and the second S-LMC supports at least one of:
an assistance data receipt operation,
an assistance data provision operation,
a first location determination operation associated with the UE,
a second location determination operation associated with the other UE
a measurement operation,
a measurement receipt operation, or
any combination thereof.
3 . The UE of claim 1 ,
wherein the first sidelink communication and the second sidelink communication are performed using PC5 signaling messages.
4 . The UE of claim 1 ,
wherein the UE is associated with a vehicle and wherein the other UE is associated with a vehicle or a roadside unit.
5 . The UE of claim 1 ,
wherein the one or more processors are further configured to receive, via the transceiver, a capability request from the other UE.
6 . The UE of claim 1 ,
wherein the one or more processors are further configured to transmit, via the transceiver to the other UE, capability information associated with the UE, wherein the capability information associated with the UE indicates at least one of:
one or more positioning measurements that the UE is capable of performing,
a velocity sensor error,
a calibration error, or
a combination thereof.
7 . The UE of claim 1 ,
wherein the one or more processors are further configured to receive, via the transceiver from the other UE, capability information associated with the other UE, wherein the capability information associated with the other UE indicates at least one of:
an identification of the other UE as an anchor UE,
one or more positioning measurements that the other UE is capable of performing,
a velocity sensor error,
a calibration error, or
any combination thereof.
8 . The UE of claim 1 ,
wherein the one or more processors are further configured to at least one of:
transmit, via the transceiver, a first set of assistance data to the other UE, wherein the first set of assistance data comprises a first set of positioning reference signal (PRS) configuration information associated with at least one of the UE, the other UE, or a combination thereof,
receive, via the transceiver, a second set of assistance data from the other UE, wherein the second set of assistance data comprises a second set of PRS configuration information associated with at least one of the UE, the other UE, or a combination thereof, or
both.
9 . The UE of claim 8 ,
wherein the second sidelink communication comprises an incoming PRS based at least in part on the first set of assistance data, and
wherein the one or more processors are further configured to obtain a positioning measurement based at least in part on the incoming PRS.
10 . The UE of claim 9 ,
wherein the one or more processors are further configured to transmit, via the transceiver to the other UE, at least one of:
the positioning measurement,
an error associated with the positioning measurement, or
a combination thereof.
11 . The UE of claim 8 ,
wherein the one or more processors are further configured to:
transmit, via the transceiver, an outgoing PRS based at least in part on the second set of assistance data,
wherein the second sidelink communication comprises a positioning measurement based at least in part on the outgoing PRS.
12 . The UE of claim 1 ,
wherein the one or more processors, when determining the position of the UE, are configured to compute the position of the UE based at least in part on at least one of:
a first positioning measurement obtained by the UE,
a second positioning measurement received from the other UE, or
a combination thereof.
13 . The UE of claim 1 ,
wherein the one or more processors are further configured to receive a vehicle positioning measurement from a sensor associated with a vehicle corresponding to the UE, and wherein the one or more processors, when determining the position of the UE, are further configured to compute the position of the UE based at least in part on the vehicle positioning measurement.
14 . The UE of claim 13 ,
wherein the sensor comprises a wheel sensor.
15 . The UE of claim 13 ,
wherein the vehicle positioning measurement comprises velocity information.
16 . The UE of claim 13 ,
wherein the one or more processors are further configured to transmit, via the transceiver to the other UE, at least one of:
the vehicle positioning measurement,
an error associated with the vehicle positioning measurement, or
both.
17 . The UE of claim 1 ,
wherein the second sidelink communication comprises an indication of the position of the UE, and
wherein the one or more processors, when determining the position of the UE, are configured to decode the second sidelink communication.
18 . The UE of claim 1 ,
wherein the one or more processors are further configured to:
transmit, via the transceiver, an additional positioning request to a third UE, wherein the additional positioning request comprises a third sidelink communication between the first S-LMC of the UE and a third S-LMC of the third UE.
19 . The UE of claim 18 ,
wherein the one or more processors are further configured to:
receive, via the transceiver, a first capability request from the other UE;
receive, via the transceiver, a second capability request from the third UE;
transmit, via the transceiver to the other UE, capability information associated with the UE; and
transmit, via the transceiver to the third UE, the capability information associated with the UE.
20 . The UE of claim 18 ,
wherein the one or more processors are further configured to:
receive, via the transceiver, a first set of assistance data from the other UE, wherein the first set of assistance data comprises positioning reference signal (PRS) configuration information associated with at least one of the UE, the other UE, or a combination thereof; and
receive, via the transceiver, a second set of assistance data from the third UE, wherein the second set of assistance data comprises PRS configuration information associated with at least one of the UE, the third UE, or a combination thereof.
21 . The UE of claim 20 ,
wherein the one or more processors are further configured to:
receive, via the transceiver, a first PRS from the other UE;
receive, via the transceiver, a second PRS from the third UE; and
obtain at least one positioning measurement based at least in part on at least one of:
the first PRS,
the second PRS, or
a combination thereof.
22 . The UE of claim 21 ,
wherein the one or more processors are further configured to transmit, via the transceiver, the at least one positioning measurement to at least one of the other UE, the third UE, or a combination thereof.
23 . The UE of claim 20 ,
wherein the one or more processors are further configured to transmit, via the transceiver, at least one of:
a first outgoing PRS based at least in part on the first set of assistance data,
a second outgoing PRS based at least in part on the second set of assistance data, or
a combination thereof.
24 . The UE of claim 18 ,
wherein the one or more processors are further configured to:
receive a vehicle positioning measurement from a sensor associated with a vehicle corresponding to the UE; and
transmit, via the transceiver to at least one of the other UE, the third UE, or a combination thereof, at least one of:
the vehicle positioning measurement,
an error associated with the vehicle positioning measurement, or
a combination thereof.
25 . The UE of claim 24 ,
wherein the sensor comprises a wheel sensor, and wherein the vehicle positioning measurement comprises velocity information.
26 . The UE of claim 18 ,
wherein the second sidelink communication comprises an indication of the position of the UE, and
wherein the one or more processors, when determining the position of the UE, are configured to decode the second sidelink communication.
27 . The UE of claim 18 ,
wherein the second sidelink communication comprises a first indication of the position of the UE, and
wherein the one or more processors are further configured to receive, via the transceiver, a third sidelink communication from the third UE, wherein the third sidelink communication comprises a second indication of the position of the UE,
wherein the UE determines the position of the UE based at least in part on the first indication of the position of the UE and the second indication of the position of the UE.
28 . A user equipment (UE) for wireless communication, comprising:
one or more memories;
a transceiver; and
one or more processors coupled to the one or more memories and the transceiver, the one or more processors configured to:
receive, via the transceiver from another UE, a positioning request associated with a procedure for determining a position of the other UE, wherein:
the positioning request comprises a first sidelink communication between a first sidelink location management component (S-LMC) of the UE and a second S-LMC of the other UE;
the first S-LMC and the second S-LMC comprise sub-functions associated with a vehicle-to-everything protocol layer; and
each of the first S-LMC and the second S-LMC supports:
a capability request operation associated with the procedure for determining the position of the UE, and
a capability response operation associated with the procedure for determining the position of the UE; and
transmit, via the transceiver to the other UE, a second sidelink communication associated with the procedure for determining the position of the other UE.
29 . A method of wireless communication performed by a user equipment (UE), comprising:
transmitting, via a transceiver to another UE, a positioning request associated with a procedure for determining a position of the UE, wherein:
the positioning request comprises a first sidelink communication between a first sidelink location management component (S-LMC) of the UE and a second S-LMC of the other UE;
the first S-LMC and the second S-LMC comprise sub-functions associated with a vehicle-to-everything protocol layer; and
each of the first S-LMC and the second S-LMC supports:
a capability request operation associated with the procedure for determining the position of the UE, and
a capability response operation associated with the procedure for determining the position of the UE;
receiving, via the transceiver from the other UE, a second sidelink communication associated with the procedure for determining the position of the UE; and
determining the position of the UE based at least in part on the second sidelink communication.
30 . A method of wireless communication performed by a user equipment (UE), comprising:
receiving, via a transceiver from another UE, a positioning request associated with a procedure for determining a position of the other UE, wherein:
the positioning request comprises a first sidelink communication between a first sidelink location management component (S-LMC) of the UE and a second S-LMC of the other UE;
the first S-LMC and the second S-LMC comprise sub-functions associated with a vehicle-to-everything protocol layer; and
each of the first S-LMC and the second S-LMC supports:
a capability request operation associated with the procedure for determining the position of the UE, and
a capability response operation associated with the procedure for determining the position of the UE; and
transmitting, via the transceiver to the other UE, a second sidelink communication associated with the procedure for determining the position of the other UE.