Integrating of WLAN/UMTS Network in Hot-Spot Locations Using OPNET

Abstract

Currently, there is a strong need for integrating WLANs with third generation mobile network and develop heterogeneous mobile data networks, capable of ubiquitous data services and very high data rates in hotspots. Wireless third generation (3G) network is coming with many benefits and features for network users. 3G network main advantages are it provides more connectivity and reachability. In the other side, IEEE 802.11 Wireless LAN has it own advantages which are Broadband service with low cost and widespread technology. This paper evaluates the performance of two 3G/WLAN integration schemes: loose and open coupling, together with two mobility management schemes: Mobile IP and mobile stream control transmission protocol (mSCTP) for an airport as a typical example of a hot-spot location. In addition, the evaluation is carried out for a wide range of application mixes consisting of FTP, HTTP and multimedia Utilizing OPNET as the simulation platform and incorporating the required protocols. The hand-off delay between the 3G and WLAN networks, the results indicate that a loose-couple integration solution together with Mobile IP provides the best performance.

Keywords: Mobile Networks, Mobile IP, mSCTP, open & loose coupling and Handover