Patent ID: 8837307

Claim:
A method of wireless communication, comprising: transmitting a first packet from a first apparatus to a second apparatus; receiving a second packet from the second apparatus as a result of the transmission of the first packet; transmitting a third packet from the first apparatus to the second apparatus after the reception of the second packet; determining a first time value associated with the reception of the second packet and a second time value associated with the transmission of the third packet; receiving information from the second apparatus, wherein the information is indicative of a third time value associated with the transmission of the second packet and a fourth time value associated with the reception of the third packet; determining a distance between the first apparatus and the second apparatus based on the first time value, the second time value, and the received information; transmitting a fourth packet from the first apparatus to the second apparatus; receiving a fifth packet from the second apparatus, wherein the fifth packet comprises a first symbol sequence for gain control at the first apparatus; and determining a gain level for the reception of the second packet based on the first symbol sequence.