期刊名称：International Journal on Computer Science and Engineering
印刷版ISSN：2229-5631
电子版ISSN：0975-3397
出版年度：2010
卷号：2
期号：3
页码：630-634
出版社：Engg Journals Publications
摘要：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.
关键词：Next Generation Wireless Systems (NGWS); Handoff; GPS (Global Positioning System); Direction of velocity of MT (Mobile Terminal); Pre-registration.
