Sidelink ranging for positioning reference signal types
Various aspects of the present disclosure relate to sidelink ranging for positioning reference signal types. One apparatus includes at least one memory and at least one processor that is configured to receive a ranging request to initiate a sidelink ranging session along a sidelink connection, transmit a sidelink request message comprising a request to perform ranging setup and participate in the sidelink ranging session, initiate the sidelink ranging session in response to receiving a confirmation to participate in the sidelink ranging session, determine completion of the sidelink ranging session, transmit a final ranging round message indicating a final round of the sidelink ranging session, and receive a location measurement report in response to the final ranging round message.
1 . A user equipment (UE) for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
receive a ranging request associated with a sidelink ranging session of a sidelink connection;
transmit a sidelink request message comprising a request for ranging setup and participation in the sidelink ranging session;
receive confirmation for participation in the sidelink ranging session in response to the sidelink request message;
initiate the sidelink ranging session in response to the confirmation; and
determine completion of the sidelink ranging session.
2 . The UE of claim 1 , wherein the ranging request comprises a network induced ranging request, a mobile terminated ranging request, a mobile originated ranging request, or a combination thereof.
3 . The UE of claim 2 , wherein the ranging request is based on an immediate ranging request, a deferred ranging request, or a combination thereof.
4 . The UE of claim 3 , wherein the deferred ranging request is triggered in response to an event, the event comprising a coverage area event, a periodic relative location event, a tracking motion event, or a combination thereof.
5 . The UE of claim 1 , wherein performing ranging setup comprises performing a sidelink unicast ranging setup based on a set of ranging service levels.
6 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to transmit capability information with the ranging request and response messages.
7 . The UE of claim 5 , wherein the set of ranging service levels comprises an index of ranging service levels associated to a positioning accuracy, a direction accuracy, a ranging latency, or a combination thereof.
8 . The UE of claim 1 , wherein performing ranging setup comprises performing a sidelink groupcast ranging setup based on a set of ranging service levels.
9 . The UE of claim 1 , wherein performing ranging setup comprises performing a sidelink broadcast ranging setup based on a set of ranging service levels.
10 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to transmit a ranging discovery message to a plurality of devices to initiate a sidelink ranging session with the plurality of devices.
11 . The UE of claim 10 , wherein the at least one processor is configured to cause the UE to transmit a sidelink ranging service discovery announcement message to the plurality of devices.
12 . The UE of claim 11 , wherein the at least one processor is configured to cause the UE to transmit a sidelink ranging service discovery solicitation message to the plurality of devices.
13 . The UE of claim 11 , wherein the at least one processor is configured to cause the UE to receive a sidelink ranging service discovery response message from one or more of the plurality of devices.
14 . A method for wireless communication performed by a user equipment (UE), the method comprising:
receiving a sidelink request message comprising a request for ranging setup and participation in a sidelink ranging session;
transmitting a confirmation for participation in the sidelink ranging session; and
participating in the sidelink ranging session.
15 . An equipment (UE) for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
receive a sidelink request message comprising a request for ranging setup and participation in a sidelink ranging session;
transmit a confirmation to participate in the sidelink ranging session in response to the sidelink request message; and
participate in the sidelink ranging session.
16 . A method for wireless communication performed by a user equipment (UE), the method comprising:
receiving a ranging request associated with a sidelink ranging session of a sidelink connection;
transmitting a sidelink request message comprising a request for ranging setup and participation in the sidelink ranging session in response to the ranging request;
receiving confirmation for participation in the sidelink ranging session in response to the sidelink request message;
initiating the sidelink ranging session in response to the confirmation; and
determining completion of the sidelink ranging session.
17 . The method of claim 16 , wherein the ranging request comprises a network induced ranging request, a mobile terminated ranging request, a mobile originated ranging request, or a combination thereof.
18 . The method of claim 17 , wherein the ranging request is based on an immediate ranging request, a deferred ranging request, or a combination thereof.
19 . The method of claim 18 , wherein the deferred ranging request is triggered in response to an event, the event comprising a coverage area event, a periodic relative location event, a tracking motion event, or a combination thereof.
20 . The method of claim 16 , wherein the UE comprises an initiator UE.