Patent ID: 7971253
Filing Date: 2011-06-28
Classification: H04L,H04W

Abstract:
1. A method for detecting address rotation by a device in a communication network, the method comprising: receiving, at a first time, a first message transmitted by the device; receiving, at a second time, a second message transmitted by the device; processing the first message to determine a first sequence number included in the first message and a first transmitter address included in the first message; processing the second message to determine a second sequence number included in the second message and a second transmitter address included in the second message; determining that the second transmitter address is different from the first transmitter address; determining a time gap between the first time and the second time; determining, based, in part, on the time gap, a sequence threshold value; determining a sequence difference between the first sequence number and the second sequence number; determining that the sequence difference is less than the sequence threshold value; and providing an indication of address rotation by the device, wherein the address rotation process including a single wireless device transmitting a plurality of messages including a plurality of distinct transmitter addresses, respectively.