A method and system communicates messages using a radio signal. The radio signal is transmitted according to an air interface standard for wireless radio communications. A baseband envelope of the transmitted radio signal is modulated while maintaining compliance with the air interface standard to encode a message in the radio signal. A receiver demodulates the baseband envelope to decode the message. The transmitter and receiver can be part of a cellular telephone network including mobile telephones and base stations.

 
Web www.patentalert.com

< Methods and apparatus for providing a communication proxy system

> Security and identification label and the production and use thereof

~ 00423