Reconfigurable intelligent surface enabled sidelink positioning

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

• receiving, from a second UE, a reconfigurable intelligent surface (RIS) schedule, wherein the RIS schedule indicates times when at least one RIS of one or more RIS resources is in an enabled state and times when the at least one RIS of the one or more RIS is in a disabled state;
• receiving, from the second UE, a positioning reference signal (PRS) measurement schedule, wherein the PRS measurement schedule indicates times when at least one PRS from the second UE may be measured by the first UE;
• performing a first set of one or more measurements of the at least one PRS transmitted from the second UE in accordance with the PRS measurement schedule and the RIS schedule to obtain one or more measurements of the at least one PRS when the at least one RIS is in the disabled state;
• and
• performing a second set of one or more measurements of the at least one PRS transmitted from the second UE in accordance with the PRS measurement schedule and the RIS schedule to obtain one or more measurements of the at least one PRS when the at least one RIS is in the enabled state.

A user equipment (UE), comprising:

• a memory;
• at least one transceiver;
• and
• at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor configured to:
• control one or more reconfigurable intelligent surfaces (RIS) in accordance with one or more RIS schedules, wherein the one or more RIS schedules indicate times when the one or more RIS are in an enabled state and times when the one or more RIS are in a disabled state;
• request at least one participating UE of one or more participating UEs to transmit at least one positioning reference signal (PRS);
• perform a first set of one or more measurements of the at least one PRS transmitted from the at least one participating UE, wherein the at least one PRS is measured while performing the first set of one or more measurements in accordance with the RIS schedule to obtain one or more measurements of the at least one PRS when the one or more RIS are in the disabled state;
• and
• perform a second set of one or more measurements of the at least one PRS transmitted from the at least one participating UE, wherein the at least one PRS is measured while performing the second set of one or more measurements in accordance with the RIS schedule to obtain one or more measurements of the at least one PRS when the one or more RIS are in the enabled state.

A first user equipment (UE), comprising:

• a memory;
• at least one transceiver;
• and
• at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor configured to:
• receive, via the at least one transceiver, from a second UE, a reconfigurable intelligent surface (RIS) schedule, wherein the RIS schedule indicates times when at least one RIS of one or more RIS resources is in an enabled state and times when the at least one RIS of the one or more RIS is in a disabled state;
• receive, via the at least one transceiver, from the second UE, a positioning reference signal (PRS) measurement schedule, wherein the PRS measurement schedule indicates times when at least one PRS from the second UE may be measured by the first UE;
• perform a first set of one or more measurements of the at least one PRS transmitted from the second UE in accordance with the PRS measurement schedule and the RIS schedule to obtain one or more measurements of the at least one PRS when the at least one RIS is in the disabled state;
• and
• perform a second set of one or more measurements of the at least one PRS transmitted from the second UE in accordance with the PRS measurement schedule and the RIS schedule to obtain one or more measurements of the at least one PRS when the at least one RIS is in the enabled state.