Aspects related to geo localization based on mobiles' measurements in WCDMA wireless networks

摘要

The launch of smart phones and the myriad of 3G services that they support require that mobiles' geo-location in wireless networks go beyond service localization, emergency call service, and home location billing. Operators aiming for more and more cost efficient network operations need to consider mobiles' positioning for UTRAN internal utilization such as location-assisted handover as well as for network optimization and troubleshooting such as dropped and blocked calls/sessions and detection of coverage holes. The paper gives a brief overview of geo-location techniques generally used in mobile networks and proposes a solution suitable for mobiles' positioning in WCDMA networks based on phone measurements. The paper discusses aspects related to the characteristics of geo-location in the context of the wireless environment, particularly WCDMA, and the challenges imposed on the calculation of the mobile geo-location estimate. The paper discusses how a proposed solution based on the phone's measurements solves the WCDMA challenges. and what are the achieved performances.