Patent ID: 8447295
Filing Date: 2013-05-21
Classification: H04B

Abstract:
1. A method for obfuscating satellite terminal transmission activity comprising: providing a network comprising a satellite, distributed satellite terminals transmitting signals to and receiving signals from the satellite, and at least one computer in communication with the network; calculating using the at least one computer how much unused transmission power spectral density is available to the network for obfuscation; if the calculating step establishes that there is the unused transmission power spectral density available to the network, determining using the at least one computer, using an algorithm, a random distribution of at least a portion of the unused transmission power spectral density to one or more of the distributed satellite terminals in order to provide obfuscation of the distributed satellite terminal transmission activity, and adjusting a transmission power spectral density level of one or more of the distributed satellite terminals to distribute said portion of the unused transmission power spectral density according to the random distribution determination of the at least one computer; determining whether or not allocated data rates of the one or more distributed satellite terminals are to be adjusted; if the determining step determines that the allocated data rates are to be adjusted, adjusting the allocated data rates of the one or more distributed satellite terminals, to be proportional to the adjustment to the transmission power spectral density level of the one or more distributed satellite terminals, by inserting non-information carrying bits into their data streams when the transmission power spectral density level of the one or more distributed satellite terminals are adjusted to distribute said portion of the unused transmission power spectral density according to the random distribution determination of the at least one computer in order to obfuscate the distributed satellite terminal transmission activity; and if the determining step determines that the allocated data rates are not to be adjusted, not adjusting the allocated data rates of the one or more distributed satellite terminals when the transmission power spectral density level of the one or more distributed satellite terminals is adjusted to distribute said portion of the unused transmission power spectral density according to the random distribution determination of the at least one computer in order to obfuscate the distributed satellite terminal transmission activity.