Date Added: Mar 2012
In this paper, the authors consider problem of positioning of mobile phones, different approaches were produced for these targets using GPS, WiFi, GSM, UMTS and other sensors, which exist in today smart phone sensors. Location awareness in general is emerging a tremendous interest in different fields and scopes. Position is the key element of context awareness. However, GPS produces an accurate position, it requires open sky and does not work indoors. They produce an innovative robust technique for positioning which could be applied on terminal-based or network-based architecture.