Patent ID: 8761028

Claim:
A wireless channel calibration apparatus, comprising: a time-of-flight (TOF) distance module to measure a TOF associated with packet transmissions traversing a path between a first wireless station (STA 1 ) incorporating the wireless channel calibration apparatus and a second wireless station (STA 2 ) and to calculate a length (D 1 ) associated with the STA 1 -STA 2 path; a received signal strength (RSS) module to measure at least one received signal strength RSS( 1 ) associated with at least one of the packet transmissions; a dynamic channel module communicatively coupled to the TOF distance module and to the RSS module to dynamically calculate a value of a path loss exponent (N) associated with the STA 1 -STA 2 path as a function of at least the length D 1 and the RSS( 1 ); a path gain module communicatively coupled to the RSS module to determine a value of a path gain associated with the path between the STA 1 and the STA 2 as the received signal strength value RSS( 1 ) minus a known transmit power level TXP(STA 2 ) associated with transmissions from the STA 2 minus a known antenna gain value AG(STA 1 ) associated with the STA 1 minus a known antenna gain value AG(STA 2 ) associated with the STA 2 ; and a path gain parameter table communicatively coupled to the path gain module to store at least one of the transmit power level TXP(STA 2 ), the antenna gain value AG(STA 2 ), the antenna gain value AG(STA 1 ), a transmit power level TXP(STA 3 ) associated with a third wireless station (STA 3 ), an antenna gain value AG(STA 3 ) associated with the STA 3 , a wavelength λ 1 (lambda-one) associated with transmissions from the STA 2 , or a wavelength λ 2 (lambda-two) associated with transmissions from the STA 3 .