In a mobile telephone system including a mobile telephone base station (20) connected to a telephone network (40) and a mobile telephone apparatus (10) which includes a first GPS unit for receiving a GPS wave as a first received GPS signal to obtain position data of the mobile telephone apparatus by...http://www.google.com/patents/US7233783?utm_source=gb-gplus-sharePatent US7233783 - Mobile telephone system capable of effectively utilizing GPS information even if direct reception by a mobile telephone apparatus is difficult
