The present invention relates to a system and method for providing radio frequency communication of data collected by a multiplicity of mobile transceiver units to a base transceiver. The system comprises the base transceiver and the mobile transceiver units being selectively operable at limited and...http://www.google.de/patents/US7606575?utm_source=gb-gplus-sharePatent US7606575 - Remote radio data communication system with data rate switching
