A Comparison of Different Vertical Handoff Algorithms between WLAN and Cellular Networks
Today, the advent of heterogeneous wireless networks is revolutionizing the telecommunications industry. As IP based wireless networking increases in popularity, handoff issues must be taken into consideration. When a user switches between networks with different technologies, many issues have to be considered in order to increase the efficiency of the network during vertical handoff. In this paper, several algorithms for optimizing vertical handoff between WLAN and the cellular networks are discussed. In each of these algorithms, specific factors were considered and then a comparison made in order to see the effect of each factor on vertical handoff. It was found that when both received signal strength and service history information are taken into account in algorithm design, the number of handoffs would be reduced and the throughput of the network increased.
International Journal of Research and Innovation in Engineering, Volume 4, Number 1, Spring/Summer 2012, 5-12.