Methods and apparatuses for sidelink positioning

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 configuration information for sidelink (SL) positioning, wherein the configuration information for SL positioning comprises:

a configuration of at least one panel pattern, wherein each panel pattern of the at least one panel pattern comprises one or more panels;

at least one resource allocation principle associated with the at least one panel pattern; and

at least one beam allocation principle associated with the at least one panel pattern;

determine a set of resources by selecting a panel pattern comprising a set of panels from the at least one panel pattern;

transmit an SL positioning reference signal (SL-PRS) on a set of resources according to the received configuration information for SL positioning; and

transmit a panel pattern index of the selected panel pattern in sidelink control information (SCI) or a physical sidelink shared channel (PSSCH).

2 . The UE of claim 1 , wherein:

the configuration information for SL positioning is received in a resource pool configuration of a resource pool;

the configuration information for SL positioning is received in a zone configuration of a zone; or

the configuration information for SL positioning is specific to the UE.

3 . The UE of claim 1 , wherein the configuration information for SL positioning is received via:

a system information block (SIB) from a network;

radio resource control (RRC) signaling from the network;

a medium access control (MAC) control element (CE) from the network;

PC5 RRC signaling from a second UE;

a MAC CE from the second UE;

SCI from the second UE; or

a pre-configuration.

4 . The UE of claim 1 , wherein the configuration of at least one panel pattern comprises a configuration of each panel pattern of the at least one panel pattern, and wherein the configuration of each panel pattern includes:

a panel pattern index indicating a corresponding panel pattern;

information of a panel plane on which one or more panels of the corresponding panel pattern are deployed;

information of a panel sequence indicating distribution information of the one or more panels of the corresponding panel pattern on the panel plane; or

information of a reference panel.

5 . The UE of claim 1 , wherein the at least one resource allocation principle comprises one resource allocation principle for all of the at least one panel pattern, and wherein the one resource allocation principle indicates:

SL-PRS resources are uniformly allocated to all panels of each panel pattern of the at least one panel pattern; or

a transmission power is uniformly allocated among all panels of each panel pattern of the at least one panel pattern.

6 . The UE of claim 1 , wherein the at least one beam allocation principle includes one beam allocation principle for all of the at least one panel pattern, and wherein the one beam allocation principle indicates that beams used by the UE are uniformly allocated to all panels of each panel pattern of the at least one panel pattern.

7 . The UE of claim 1 , wherein the set of resources is based on:

selecting a beam pattern comprising a set of beams;

selecting an SL-PRS pattern and a set of SL-PRS resources to be used for the SL-PRS pattern;

allocating the set of SL-PRS resources to the set of panels of the selected panel pattern based on a resource allocation principle associated with the selected panel pattern; or

allocating the set of SL-PRS resources to the set of beams of the selected beam pattern based on a beam allocation principle associated with the selected panel pattern.

8 . The UE of claim 7 , wherein the at least one processor is further configured to cause the UE to: transmit assistance information associated with the selected panel pattern in the SCI or the PSSCH.

9 . The UE of claim 7 , wherein the at least one processor is further configured to cause the UE to:

receive, from a second UE, a measurement result of the SL-PRS and assistance information of the second UE; and

estimate location estimation and orientation information of the UE based on the measurement result and the assistance information.

10 . The UE of claim 9 , wherein the assistance information of the second UE indicates a panel pattern of the second UE based the second UE determining the measurement result.

11 . 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 configuration information for sidelink (SL) positioning, wherein the configuration information for SL positioning comprises:

a configuration of at least one panel pattern, wherein each panel pattern of the at least one panel pattern comprises one or more panels;

at least one resource allocation principle associated with the at least one panel pattern; or

at least one beam allocation principle associated with the at least one panel pattern; and

receive an SL positioning reference signal (SL-PRS) on a set of resources determined by a selection of a panel pattern comprising a set of panels from the at least one panel pattern; and

receive assistance information associated with the selected panel pattern in sidelink control information (SCI) or a physical sidelink shared channel (PSSCH).

12 . A processor for wireless communication, comprising:

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

transmit configuration information for sidelink (SL) positioning, wherein the configuration information for SL positioning comprises:

a configuration of at least one panel pattern, wherein each panel pattern of the at least one panel pattern comprises one or more panels;

at least one resource allocation principle associated with the at least one panel pattern; or

at least one beam allocation principle associated with the at least one panel pattern;

transmit an SL positioning reference signal (SL-PRS) on a set of resources determined by a selection of a panel pattern comprising a set of panels from the at least one panel pattern; and

transmit assistance information associated with the selected panel pattern in sidelink control information (SCI) or a physical sidelink shared channel (PSSCH).

13 . A method performed by a user equipment (UE), the method comprising:

receiving configuration information for sidelink (SL) positioning, wherein the configuration information for SL positioning comprises:

a configuration of at least one panel pattern, wherein each panel pattern of the at least one panel pattern comprises one or more panels;

at least one resource allocation principle associated with the at least one panel pattern; or

at least one beam allocation principle associated with the at least one panel pattern;

determining a set of resources by selecting a panel pattern comprising a set of panels from the at least one panel pattern;

transmitting an SL positioning reference signal (SL-PRS) according to the received configuration information for SL positioning; and

transmitting a panel pattern index of the selected panel pattern in sidelink control information (SCI) or a physical sidelink shared channel (PSSCH).

14 . The method of claim 13 , wherein:

the configuration information for SL positioning is received in a resource pool configuration of a resource pool;

the configuration information for SL positioning is received in a zone configuration of a zone; or

the configuration information for SL positioning is specific to the UE.

15 . The method of claim 13 , wherein the configuration information for SL positioning is received via:

a system information block (SIB) from a network;

radio resource control (RRC) signaling from the network;

a medium access control (MAC) control element (CE) from the network;

PC5 RRC signaling from a second UE;

a MAC CE from the second UE;

SCI from the second UE; and

pre-configuration.

16 . The method of claim 13 , wherein the configuration of at least one panel pattern comprises configuration of each panel pattern of the at least one panel pattern, and the configuration of each panel pattern includes:

a panel pattern index indicating a corresponding panel pattern;

information of a panel plane on which one or more panels of the corresponding panel pattern are deployed;

information of a panel sequence indicating distribution information of the one or more panels of the corresponding panel pattern on the panel plane; or

information of a reference panel.

17 . The method of claim 13 , wherein the at least one resource allocation principle comprises one resource allocation principle for all of the at least one panel pattern, and wherein the one resource allocation principle indicates:

SL-PRS resources are uniformly allocated to all panels of each panel pattern of the at least one panel pattern; or

a transmission power is uniformly allocated among all panels of each panel pattern of the at least one panel pattern.

18 . The method of claim 13 , wherein the at least one beam allocation principle includes one beam allocation principle for all of the at least one panel pattern, and wherein the one beam allocation principle indicates that beams used by the UE are uniformly allocated to all panels of each panel pattern of the at least one panel pattern.