Patent ID: 8824325

Claim:
A method performed by a wireless network device of a communication network, the method comprising: determining distances between the wireless network device and a plurality of reference wireless network devices; determining an initial position of the wireless network device based, at least in part, on known positions of at least a subset of the plurality of reference wireless network devices; determining, by executing a first set of positioning computations associated with time difference of arrival (TDOA), an intermediate position of the wireless network device and distance calibration values associated with the plurality of reference wireless network devices based, at least in part, on the initial position of the wireless network device and the distances between the wireless network device and the plurality of reference wireless network devices; and estimating, by executing a second set of positioning computations associated with time of arrival (TOA), a current position of the wireless network device based, at least in part, on the intermediate position of the wireless network device and the distance calibration values associated with the plurality of reference wireless network devices.