Patent ID: 8489114
Filing Date: 2013-07-16
Classification: G01S

Abstract:
1. A method comprising: determining, at a wireless network device of a communication network, a round trip transit time between the wireless network device and each of a plurality of reference wireless network devices of the communication network; for each pair of the plurality of reference wireless network devices, determining a difference in a distance between the wireless network device and the pair of the plurality of reference wireless network devices based, at least in part, on the round trip transit time between the wireless network device and each of the plurality of reference wireless network devices of the communication network; determining an initial location of the wireless network device based, at least in part, on a known location of each of the plurality of reference wireless network devices; and estimating a current location of the wireless network device based, at least in part, on the initial location of the wireless network device, the difference in the distance between the wireless network device and each pair of the plurality of reference wireless network devices, and the known location of each of the plurality of reference wireless network devices.