Based On Wcdma Networks, Mobile Positioning Technology

Along with the rapid development of the mobile communication technology, people wish to obtain the information and do the correspondence anywhere at any time. So the mobile location service as the special mobile value service is came in for a more and more extensive concern by people.WCDMA is one of the main standards in the third generation mobile communication system. In the WCDMA network, a variety of services and applications with the mobile station will be provided to us, such as the public safety service, vehicles and the traffic management, navigating, the city sightseeing etc, all of them must ascertain the accurate position of the moving station. Therefore, mobile location technique has become the core technology in WCDMA network.The basic principle of the moving location technique and the leading location methods are introduced firstly, and comparing their respective advantages and disadvantages in accuracy, cost etc, and the factors affecting the accuracy of the methods are discussed as well; Secondly, aimed at the TDOA location technique, the mathematical model of TDOA hyperbolic equations is established, advantages and disadvantages of several TDOA location algorithms are analyzed in detail; Then, the basic mobile location technique,location method implementation, network architecture, signaling protocol and interface, location procedures and multiple accuracy location procedure of WCDMA mobile location are analyzed and discussed in this thesis.Based on the above-mentioned research, the architecture designing project of the LCS system is provided in this thesis, including the whole structure designing and the interface designing; The function and characteristics of the LCS system are also introduced; Then this thesis presented the software structure of GMLC which is the core component of LCS system as well; the LCS module in the MSC is introduced detaily, as the designing and the procedure of LCS module. Finally, discussed the test problem of the LCS system and pointed out the shortage and improvement suggestion.