GSM-WCDMA hybrid localization techniques in multilayer heterogeneous network / Muhammad Naqiuddin Hassan

Heterogeneous networks are developed to allow communication devices to access the wireless network using different access technologies. In heterogeneous networks, group of networks can be used to provide particular services. Every service can be delivered to the user using the optimum network for that service. Mobile localization is an important service that can be offered by heterogeneous networks by using the resources of the cellular system to determine the location of a mobile station. LBS include services to identify a location of a person or subject; LBS include parcel tracking and vehicle tracking services. LBS can include mobile commerce when taking the form of coupons or advertising directed at customers based on their location. There is a serious problem faced by rescue workers to identify exact location of emergency callers from mobile network. The accuracy of positioning or localization in such single layer network network depend on • the Location Determination Technique (LDT). LDT is to determine the approximate position of a cellular mobile user in a suburban environment is presented. The objectives are to increase the accuracy and precision on mobile location. To implement LDT, two types of methods are used. Which is Enhanced Observed Time Difference (E-OTD) that is for Global System for Mobile Communications (GSM), and ObservedTime Differential of Arrival (OTDOA) is for Wideband Code Division Multiple Access (WCDMA). The proposed method has been implemented and evaluated using simulation on MATLAB software under various mobility models. Simulation shown that the LDT error for hybrid technique can been improved as compared to E-OTD and OTDOA. The simulation will produced the comparison of LDT error on MS/UE with different speed and comparison of LDT error on each types of algorithm.