Patent ID: 7302269

Claim:
A radiolocation method in a wireless network comprising: determining the relative locations of a set of wireless stations of the wireless network, each station including a local clock, each station further including a transmitter, a receiver, an analog-to-digital converter to form samples of received signals, and a buffer subsystem coupled to the analog-to-digital converter, said determining the relative locations including: each of the set of stations at least once transmitting a radio signal corresponding to a packet to be received by each other station, the transmitting in a round robin manner one station after the other; each of the stations receiving the packets transmitted by each of the other stations; and at each receiving station, sampling the received signal corresponding to a received packet at a rate according to an ADC clock; capturing samples in a memory; timestamping the captured samples according to a local timestamping clock related to the station's local clock; and sending the timestamped captured samples to a processing entity, such that the processing entity can determine the times of arrival of each packet at each station, and from the determined times of arrival, mutually calibrate the stations' local clocks, and further determine the relative positions of the stations by determining the time-of-flight between the stations of the radio signals corresponding to the transmitted packets.