In a geographic region that contains a trunking communication system and a cellular communication system, wherein the coverage area of the trunking system and cellular communication system substantially overlap and wherein some communication units are located within the geographic region, a method is...http://www.google.fr/patents/US5218716?utm_source=gb-gplus-shareBrevet US5218716 - Method for locating a communication unit within a multi mode communication system
Method for locating a communication unit within a multi mode communication ...
