Sidelink ranging for positioning reference signal types

1 . A network equipment (NE) 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 NE to:

receive a positioning reference signal (“PRS”) configuration for at least one PRS type for transmitting a PRS to at least one second NE;

receive a resource pool configuration for transmitting the PRS associated with relative positioning measurements;

receive a multiplexing configuration for multiplexing a physical sidelink control channel (“PSCCH”) with the PRS;

multiplex the PSCCH with the PRS according to the multiplexing configuration; and

transmit, in a same slot as the PSCCH and after a final PSCCH symbol without frequency-division multiplexing, the multiplexed PSCCH and PRS to the at least one second NE according to the PRS configuration and the resource pool configuration.

2 . The NE of claim 1 , wherein the resource pool configuration comprises at least one PRS type, the at least one PRS type associated with a pseudo-random sequence transmission, a Zadoff-chu sequence transmission, a pulse-based sequence transmission, or a combination thereof.

3 . The NE of claim 1 , wherein the at least one PRS type comprises PRS type 1 and wherein the at least one processor is configured to cause the NE to multiplex the PSCCH with the PRS by frequency division multiplexing the PRS with a PSCCH location by starting a symbol of the PRS at a second symbol of a resource element, a location of the PRS being punctured for transmission of the PSCCH.

4 . The NE of claim 1 , wherein the at least one PRS type comprises PRS type 1 and wherein the at least one processor is configured to cause the NE to multiplex the PSCCH with the PRS by starting a PRS symbol immediately after a PSCCH symbol of a resource element without frequency division multiplexing the PRS with the PSCCH.

5 . The NE of claim 4 , wherein the at least one processor is configured to cause the NE to frequency division multiplex sidelink control information (“SCI”) with the PSCCH in symbols 2 and 3 of the resource element and transmit the multiplexed SCI and PSCCH and a front-loaded demodulation reference signal for decoding the SCI.

6 . The NE of claim 1 , wherein the at least one PRS type comprises PRS type 2 and wherein the at least one processor is configured to cause the NE to multiplex the PSCCH with the PRS by transmitting PSCCH corresponding to a ranging pair in a starting resource block of each sub-channel of a resource element as configured for a resource pool.

7 . The NE of claim 1 , wherein the at least one PRS type comprises PRS type 2 and wherein the at least one processor is configured to cause the NE to multiplex the PSCCH with the PRS by defining PSCCH symbols and a plurality of physical resource blocks (“PRBs”) for a resource pool and transmit the PSCCH symbols from a starting resource block of the resource pool, wherein each PSCCH resource is multiplexed and comprises information related to associated ranging pairs.

8 . The NE of claim 1 , wherein the at least one PRS type comprises PRS type 3 and wherein the at least one processor is configured to cause the NE to multiplex the PSCCH with the PRS by time division multiplexing the PSCCH and a pulse sequence of the PRS without frequency division multiplexing the PSCCH and the pulse sequence.

9 . The NE of claim 1 , wherein the at least one PRS type comprises PRS type 3 and wherein the at least one processor is configured to cause the NE to multiplex the PSCCH with the PRS by defining a plurality of PSCCH symbols per resource pool for a first sidelink control information (“SCI”) transmission and a second SCI transmission, and wherein the first and second SCI transmissions are frequency division multiplexed, the first SCI transmission beginning at a starting resource block of a subchannel of a resource element.

10 . The NE of claim 1 , wherein the at least one PRS type comprises PRS type 3 and wherein the at least one processor is configured to cause the NE to multiplex the PSCCH with the PRS by defining PSCCH symbols and a plurality of physical resource blocks (“PRBs”) for each PSCCH for a resource pool and transmitting the PSCCH symbols from a starting resource block of the resource pool, each PSCCH resource frequency division multiplexed and comprising information associated with a ranging pair, wherein remaining frequency resources are used for transmitting a sidelink control information (“SCI”) that is frequency division multiplexed with a PSCCH resource.

11 . The NE of claim 1 , wherein the resource pool configuration comprises a bitmap defined in symbols, logical sidelink slots for each PRS type, a processing time offset for each positioning method associated with each PRS type, or a combination thereof.

12 . The NE of claim 1 , wherein the resource pool configuration for a type 2 PRS comprises a root sequence identifier and a dynamic signaling of cyclic shift values.

13 . The NE of claim 1 , wherein the resource pool configuration for a type 3 PRS comprises a pulse duration and a dynamic signaling of offset of a pulse transmitted from sidelink control information (“SCI”) for each ranging pair.

14 . A method performed by a network equipment (NE), the method comprising:

receiving a positioning reference signal (“PRS”) configuration for at least one PRS type for transmitting a PRS to at least one second NE;

receiving a resource pool configuration for transmitting the PRS associated with relative positioning measurements;

receiving a multiplexing configuration for multiplexing a physical sidelink control channel (“PSCCH”) with the PRS;

multiplexing the PSCCH with the PRS according to the multiplexing configuration; and

transmitting, in a same slot as the PSCCH and after a final PSCCH symbol without frequency-division multiplexing, the multiplexed PSCCH and PRS to the at least one second NE according to the PRS configuration and the resource pool configuration.

15 . A network equipment (NE) 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 NE to:

receive a positioning reference signal (“PRS”) configuration for at least one PRS type for receiving a PRS from at least one second NE;

receive a resource pool configuration for receiving a configured ranging signal type associated with relative positioning measurements;

receive a multiplexing configuration associated with multiplexing a physical sidelink control channel (“PSCCH”) with the PRS; and

receive, in a same slot as the PSCCH and after a final PSCCH symbol without frequency-division multiplexing, a ranging signal from the at least one second NE according to the received PRS configuration, the resource pool configuration, and the multiplexing configuration.

16 . A processor for wireless communication, comprising:

at least one controller coupled with at least one memory and configured to cause the processor to:

receive a positioning reference signal (“PRS”) configuration for at least one PRS type for transmitting a PRS to a network equipment;

receive a resource pool configuration for transmitting the PRS associated with relative positioning measurements;

receive a multiplexing configuration for multiplexing a physical sidelink control channel (“PSCCH”) with the PRS;

multiplex the PSCCH with the PRS according to the multiplexing configuration; and

transmit, in a same slot as the PSCCH and after a final PSCCH symbol without frequency-division multiplexing, the multiplexed PSCCH and PRS to the network equipment according to the PRS configuration and the resource pool configuration.

17 . The processor of claim 16 , wherein the resource pool configuration comprises at least one PRS type, the at least one PRS type associated with a pseudo-random sequence transmission, a Zadoff-chu sequence transmission, a pulse-based sequence transmission, or a combination thereof.

18 . The processor of claim 16 , wherein the at least one PRS type comprises PRS type 1 and wherein the at least one controller is configured to cause the processor to multiplex the PSCCH with the PRS by frequency division multiplexing the PRS with a PSCCH location by starting a symbol of the PRS at a second symbol of a resource element, a location of the PRS being punctured for transmission of the PSCCH.

19 . The processor of claim 16 , wherein the at least one PRS type comprises PRS type 1 and wherein the at least one controller is configured to cause the processor to multiplex the PSCCH with the PRS by starting a PRS symbol immediately after a PSCCH symbol of a resource element without frequency division multiplexing the PRS with the PSCCH.

20 . The processor of claim 19 , wherein the at least one controller is configured to cause the processor to frequency division multiplex sidelink control information (“SCI”) with the PSCCH in symbols 2 and 3 of the resource element and transmit the SCI and PSCCH and a front-loaded demodulation reference signal for decoding the SCI.