Patent ID: 8547870
Filing Date: 2013-10-01
Classification: G01S,H04W

Abstract:
1. A method comprising: detecting, at a communication device of a wireless communication network, a request message and a corresponding response message exchanged between a master access point of the wireless communication network and a target access point of the wireless communication network; determining, at the communication device, time difference of arrival (TDOA) information based, at least in part, on the request message and the corresponding response message exchanged between the master access point and the target access point; receiving, from the master access point, an indication of round-trip time (RTT) measurement information determined by the master access point based, at least in part, on the request message and the corresponding response message exchanged between the master access point and the target access point; and calculating position information associated with the communication device based, at least in part, on the TDOA information and the RTT measurement information.