ABSTRACT

Next Generation Wireless Systems (NGWS) include co-existence of current wireless technologies such as WLANs, WiMAX, General Packet Radio Service (GPRS) and Universal Mobile Telecommunications System (UMTS). The most important and challenging issue is seamless handoff management in NGWS to ensure the Quality of Service (QoS). In this article, we propose a GPS based handoff technique to improve handoff probability in NGWS. Using GPS we determine the direction of velocity of the MT (Mobile Terminal). In earlier works handoff based on Relative Signal Strength (RSS) of BS (base station) was proposed. But in the case when a MT is moving towards an NBS whose RSS is less than that of its adjacent NBS, to take the decision of handover is quite decisive. But using GPS we can ensure efficient hand-off. The result shows that the proposed approach can solve the problem and helps to take the right decision decreasing false hand-off initiation probability.