Research And Implementation Of Location Technology In Gsm Networks Based On Svr

In recent years,the wireless network location business and its value-added business grow very fast, the scholars at home and abroad are very busy in developing the technology of location, the wireless network location technology is being developed very rapidly.Wireless network location technology has bright future and broad market.This paper first introduces the location technology in networks, and selects the technology based on the location fingerprint to implement the location in GSM networks. Secondly, we have analyzed the MR measurement report and the composition of GSM network, and construct location fingerprint to establish the location fingerprint feature library by GSM road test and getting MR measurement reports in Abis interface. Then, we propose SVR-based fingerprint locating method which first uses signal structure to match fingerprint feature library then using SVR for ligh-precision locating. In order to ensure the real-time of the SVR using, we improve the SVR parameter grid search. Finally, we give the locating results of the actual location test in the CityA, along with a locating example which show the whole process of location. What is more, the paper proposes some methods to improve the location and the way to maintain and update the fingerprint feature library.