Location Service System And Terminal Software To Achieve

Mobiltility is one of the essential characteristics of mobile computing environment which leads to location change. The location changer is not only challenged the mobile computing, but also brings new applications into this field. With the development of wireless position technology, communication network, geographical information system and mobile internet technology, the applications of location based services (LBS) are booming. LBS is a new type of business service which provides position service including information tracking, navigating, and moving Yellow Page by obtaining the position information(the longitude and latitude coordinate) of the mobile end client through the communication network and by the supporting of geographical information system. In this thesis, the research and implementation of a mobile location service system for the cellular telephone users was described.Firstly, the research on mobile computing related to location services is introduced. Then the features, typical architecture and the pivotal technologies of LBS are discussed. In the following, the development and implementation of a mobile location service system are depicted in detail. Following the clue of realization of position, the architecture of the mobile location system were discussed at first. Two position models are put forward according to the requirement analysis, and the realization procedure of the two position models is described. An efficient algorithm of position request is developed in designing with specially emphasis on design of position and communication protocols.