Identity protection method for use with wireless telephone systems

In a wireless communication system requiring a unique valid identity for each valid mobile unit operating in said wireless communication system, a mobile unit identity security system comprised of:

• a jamming transmitter for making a plurality of jamming transmissions on the same frequency or frequencies on which said valid mobile units transmit;
• each of said jamming transmissions containing at least a controlled mobile unit identity specifically selected or created for allowing monitoring of unauthorized mobile units which utilize or attempt to utilize said controlled mobile unit identities, at least a portion of each of said jamming transmissions being concurrent with at least a portion of normal mobile transmissions made by said valid mobile units;
• transmitted signals of said jamming transmissions being substantially canceled out prior to the input of decoding circuits of system receivers of said wireless communication system, causing said decoding circuits of said system receivers of said wireless communication system to ignore said jamming transmissions, processing instead said normal mobile transmissions made by said valid mobile units;
• said substantial canceling of said transmitted signals comprising the introduction of an out of phase and level adjusted replica of said transmitted signals at a point prior to said input of said decoding circuits of said system receivers.