Access link (UU) and sidelink positioning reference signal (PRS) priority in sidelink assisted positioning

A user equipment (UE), comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor, the at least one processor storing processor-readable code that, when executed by the at least one processor, is configured to perform operations including:
• determining a joint priority for a positioning reference signal (PRS) transmission to be transmitted by the UE to a target UE over a sidelink, the joint priority for the PRS transmission indicating a priority of the PRS transmission with respect to other PRS transmissions to be received by the target UE from a plurality of anchor nodes over one or more of the sidelink or an access link (Uu);
• and
• transmitting, to the target UE, positioning assistance information including configuration for the PRS transmission to be transmitted by the UE to the target UE over the sidelink, wherein the positioning assistance information includes a joint priority indication indicating the joint priority determined for the PRS transmission.

A base station, comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor, the at least one processor storing processor-readable code that, when executed by the at least one processor, is configured to perform operations including:
• receiving an indication of positioning capabilities of a plurality of anchor nodes configured for transmitting a plurality of positioning reference signal (PRS) transmissions to a target UE over one or more of an access link (Uu) or a sidelink;
• obtaining a joint priority for each PRS transmission of the plurality of PRS transmissions based on the positioning capabilities of each anchor node of the plurality of anchor nodes, the joint priority indicating of a PRS transmission indicating a priority of the PRS transmission with respect to other PRS transmissions of the plurality of PRS transmissions;
• and
• transmitting positioning assistance information including the joint priority for each PRS transmission of the plurality of PRS transmissions to the target UE.

A method of wireless communication performed by a user equipment (UE), the method comprising:

• receiving positioning assistance information including configuration for a plurality of positioning reference signal (PRS) transmissions to be received by the UE from a plurality of anchor nodes over one or more of an access link (Uu) or a sidelink, wherein the positioning assistance information includes a joint priority indication for each PRS transmission of the plurality of PRS transmissions, the joint priority indication of a PRS transmission indicating a priority of the PRS transmission with respect to other PRS transmissions of the plurality of PRS transmissions;
• receiving the plurality of PRS transmissions from the plurality of anchor nodes;
• performing measurements on one or more PRS transmissions of the plurality of PRS transmissions in an order based on the joint priority indication for each PRS transmission;
• and
• causing a determination of a position of the UE based on the measurements.