Comparision of Cellular Location Technologies

By the mobile communication developing, location technology became new service of hotspot. More and more research organization have paid attention to this technology and it is necessary that mobile proprietor must provide location service before 2001 years. This paper it introduce all kinds of cell location techniques, advantage and disadvantage of every method is also said. In the end it point out the problems that have to be researched in the future and the trend of this technology.