| 主权项 |
1. A method of computing positioning of a wi-fi device in a wi-fi network, the method comprising:
exchanging wi-fi packets among plural pairs of wi-fi nodes, including assigning local clock values to packets upon sending and receiving the packets from each of the wi-fi nodes in the pair, and communicating the local clock values in wi-fi packets exchanged between the pairs of wi-fi nodes; capturing at least a receipt count stamp in wi-fi packet communication between a mobile device and wi-fi nodes in the plural pairs; determining from the local clock values and the receipt count stamps, differential ranges between a mobile device and each of plural pairs of wi-fi nodes; and determining location of the mobile device based on the differential ranges. |
