Patent ID: 11953585
Assignee: QUALCOMM INCORPORATED
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 23:
24. A method of wireless communication performed by a second user equipment (UE), comprising:
transmitting, to a first UE via reflection by one or more passive devices, a first reference signal (RS) that is based at least in part on a first key that is shared with the first UE and that corresponds to a configuration of the one or more passive devices, wherein the configuration includes a timing of when each of the one or more passive devices is active or inactive;
receiving, from the first UE via reflection by the one or more passive devices and in association with the transmitting of the first RS, a second RS that is based at least in part on the first key;
generating a second key based at least in part on a measurement of the second RS on a channel that is established between the first UE and the second UE according to the configuration of the one or more passive devices;
receiving a positioning reference signal (PRS) that includes an indication of being generated with the second key; and
verifying, based on the second key, whether generation of the PRS is secure.