Enhancing the Accuracy of Position Information through Superposition of Location Server Data

The localization of a mobile device is of essential need in order to provide location based services to the users, e.g. in an emergency situation. Several mechanisms have been proposed so far to determine the positions, requiring rather expensive enhancements of existing access network equipment or mobile devices. In this paper, we present a new approach which uses relatively coarse, cell ID based location determination mechanisms. If the location information precision provided by a carrier is not sufficient for a service, it can be refined with data from other location servers. In contrast to other approaches for the enhancement of location information precision, our approach relies on existing location determination mechanisms inside the networks and requires only updates for the servers providing the information.