Estimation of the location of a Mobile Station accurately is a key requirement to effectively provide a wide range of Location Based Services over mobile networks. Applications requiring positioning in mobile networks gained importance in recent years. This gives rise to the various location based services (LBS). Hence developing cellular positioning techniques have been a key research problem, with numerous localization solutions been proposed. There are several methods present to find the location. The main objective is to find the location information more accurately without much modification in existing infrastructure which ensures low cost. This paper presents a review of location estimation techniques in UMTS Networks in terms of range accuracy in both urban and rural Sectors.Keywords: Location Estimation, Cellular Positioning, UMTS, Network Based, MS Based.
