Patent ID: 9648651
Date: 2017-05-09
CPC Classifications: H04L,H04W

Claim:
1. A method for determining a distance between a first device and a second device, the method comprising: determining a first transmission time (Ta) corresponding to a time instant when a first signal is sent from a first base station to the second device via the first device; receiving a first timing advance value (TA determining a second transmission time (Tb) corresponding to a time instant when a second signal is sent directly from a second base station to the second device, wherein the second base station is at a location different from the first base station; receiving a second timing advance value (TA determining the distance between the first device and the second device based on a signal propagation delay T between the first device and the second device determined using the first transmission time (Ta), the second transmission time (Tb), the first timing advance value (TA initiating an action on the second device based on the determined distance between the first device and the second device.