Patent ID: 8711688

Claim:
A method for inhibiting traffic flow analysis attacks in a wireless, multiple access communications network, the method comprising: receiving, within the wireless, multiple access communications network, a composite signal comprising a cover signal and one or more real user transmissions over a period of time; cancelling the cover signal from the composite signal to produce the one or more real user transmissions, the cancelling comprising: determining one or more signal characteristics of the cover signal, re-creating a copy of the cover signal based at least in part on the determined one or more signal characteristics, and subtracting the copy of the cover signal from the composite signal to produce the one or more real user transmissions; demodulating the one or more real user transmissions; generating the cover signal, the cover signal comprising a number of simulated user transmissions over the period of time; wherein the cover signal is generated such that the composite signal comprises a total number of simulated and real user transmissions over the period of time that is varying regardless of a number of the one or more real user transmissions, wherein the simulated user transmissions and real user transmissions comprise similar preambles, and wherein the simulated user transmissions are generated to comprise fake traffic following the preambles to generate false remote terminals; and transmitting the cover signal.