Determining a position of user equipment by using adaptive phase-changing devices

A base station comprising:

• a wireless transceiver;
• a processor;
• and
• non-transitory computer-readable storage media comprising instructions, responsive to execution by the processor, for directing the base station to:
• transmit a first wireless signal toward a first reconfigurable intelligent surface, RIS, of a first APD among multiple APDs, the first APD being located at a first position;
• receive, from a UE via a wireless connection, a first identifier associated with a first reflection of the first wireless signal received by the UE from the first APD;
• transmit a second wireless signal toward a second RIS of a second APD among the multiple APDs, the second APD being located at a second position;
• receive, from the UE via the wireless connection, a second identifier associated with a second reflection of the second wireless signal received by the UE from the second APD;
• determine a first reflected angle off the first RIS of the first APD for the first reflection of the first wireless signal based on the first identifier;
• determine a second reflected angle off the second RIS of the second APD for the second reflection of the second wireless signal based on the second identifier;
• and
• determine the position of the UE based on the first reflected angle of the first reflection, the second reflected angle of the second reflection, the first position of the first APD, and the second position of the second APD.