Localization in WiMAX Networks Depending on The Available RSS-based 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 communication. 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 the available RSS-based measurements is of great interest because of their availability during the normal operation of the standard modems, and the simplicity of obtaining them. The obtained results show that using the available RSS-based measurements to locate users in WiMAX networks is feasible and provides the required positioning accuracy for most of location-based services (LBS), if fingerprinting-based approaches are used to obtain localization. The available RSS-based measurement in the current WiMAX is called SCORE. The term SCORE is used by modem manufacturer to indicate the quality of the connection between the base station (BS) and the subscriber station (SS). However, using the actual received signal strength (RSS) values gives higher accuracy than using SCORE values, but obtaining them is more difficult and not feasible using the current modems.

Publication year:2009

Keywords:Fingerprinting, GPS, GSM, location-based services, localization, positioning, Positioning accuracy, power maps, received signal strength, SCORE, WiMAX