Hybrid navigation and communication positioning in cellular radio networks with a common RAKE receiver architecture

The location requirements for emergency callers outside urban areas can hardly be fulfilled without Global Navigation Satellite Systems (GNSS). In a hybrid mobile terminal for satellite navigation and mobile radio communications, the possibility of an additional usage of the mobile radio signals for navigation purposes could be a remedy to this problem of satellite navigation systems. This paper describes our pursued approach of a hybrid positioning concept based on a new hybrid positioning algorithm and a joint receiver structure able to receive and process signals broadcast from both navigation satellite systems and cellular radio networks.