Fingerprinting-Based Localization in WiMAX Networks Depending on SCORE Measurements

Recently, localization in wireless networks has gained a lot of interest; especially after some of the most interesting positioning application areas have emerged in wireless communications. The most important are the Federal Communications Commission (FCC) and the European Recommendation E112, both of which require that wireless providers should be able to locate within tens of meters users of emergency calls. In this paper, fingerprinting-based localization depending on SCORE measurements has been addressed in WiMAX networks. Fingerprinting is a good way to overcome signal propagation peculiarities caused by the propagation environment. And using the SCORE values is of great interest because of their availability during the normal operation of a standard modem. The obtained results show that using SCORE values to locate users in WiMAX networks is feasible and provides the required positioning accuracy by most of location-based services (LBS) if fingerprinting-based approaches were used to obtain localization. However, using the received signal strength (RSS) values gives higher accuracy but obtaining them is more difficult and not feasible using the current standard modems.