A system and method for avoiding mutual interference between two communications system is disclosed. One embodiment of the invention provides a system that includes a fixed unit and a portable unit. The fixed unit has a fixed transceiver. The portable unit has a portable transceiver. The fixed transceiver...http://www.google.com.hk/patents/US7366128?utm_source=gb-gplus-share專利 US7366128 - System and method for avoiding interference between two communications systems
