Joint frequency-and-phase modulation for multi-antenna backscatter vehicular position

A first apparatus for performing wireless communication, the first apparatus comprising:

• at least one memory for storing instructions;
• at least one transceiver;
• and
• at least one processor connected to the at least one memory and the at least one transceiver,
• wherein the processor executes the instructions to:
• transmit a first signal to a second apparatus through at least one antenna;
• receive a second signal from the second apparatus through each of the at least one antenna,
• wherein the second signal includes a bit related with a tag identifier (ID) of the second apparatus;
• obtain the tag ID of the second apparatus, which is related to absolute location information of the second apparatus, based on the bit;
• and
• perform a positioning of the first apparatus, based on the first signal, the second signal, and the tag ID of the second apparatus,
• wherein a frequency and a phase of the second signal are the same frequency and phase of the first signal.

An apparatus configured to control a first user equipment (UE), the apparatus comprising:

• at least one processor;
• at least one memory operably connectable to the at least one processor and storing instructions,
• wherein the at least one processor executes the instructions to:
• transmit a first signal to a second apparatus through at least one antenna;
• receive a second signal from the second apparatus through each of the at least one antenna,
• wherein the second signal includes a bit related with a tag identifier(ID) of the second apparatus;
• obtain the tag ID of the second apparatus, which is related to absolute location information of the second apparatus, based on the bit;
• and
• perform a positioning of the first apparatus, based on the first signal, the second signal, and the tag ID of the second apparatus,
• wherein a frequency and a phase of the second signal are the same frequency and phase of the first signal.