A priority based protocol for a two-way paging system improves the life expectancy of the pager's battery by minimizing use of pager's transmitter, without significantly impacting the reliability of the system or the timeliness of message delivery. This is accomplished by eliminating the need to always...http://www.google.ca/patents/US5596318?utm_source=gb-gplus-sharePatent US5596318 - Method for operating a two-way messaging system to extend battery life
