Patent ID: 7796966

Claim:
A process comprising: receiving a first reported signal-strength measurement, R( 1 ,n), from a wireless terminal; generating a first calibrated signal-strength measurement, S( 1 ,n), based on: (i) the first reported signal-strength measurement, R( 1 ,n), and (ii) an identifying characteristic, C, of the wireless terminal; receiving a second reported signal-strength measurement, R( 2 ,n), from the wireless terminal; and generating a second calibrated signal-strength measurement, S( 2 ,n), based on: (i) the second reported signal-strength measurement, R( 2 ,n), and (ii) the identifying characteristic, C; wherein the first reported signal-strength measurement, R( 1 ,n), and the second reported signal-strength measurement, R( 2 ,n), are based on measurements of different signals at substantially the same time.