Signal fringerprint wireless location method assisted with bluetooth network formation for GSM

Abstract

To improve the wireless location accuracy in GSM,the area covered by GSM was spatially quantized,then the signal fingerprint database was set up according to the real-time collection and analysis of Measurement Report (MR) frame documents through the usage of the 6 received level value in adjacent areas contained in MR frame structure as the signal fingerprint vector information. Finally,the path loss and the relative distance between base station and mobile station were calculated to realize the location algorithm for mobile station. Furthermore,multiple MR combined threshold which was set up by the Bluetooth wireless network formation could eliminate positioning errors caused by time-varying factors such as multipath fading and Doppler frequency shift and thereby achieved high-precision real-time field strength positioning methods. Compared with the traditional positioning methods,the above mentioned method improves the positioning precision and accuracy which can satisfy the precise services requirements under heterogeneous network environment.