Vertical handoffs in wireless overlay networks
Mobile Networks and Applications - Special issue: mobile networking in the Internet
Performance Analysis and Optimization of Handoff Algorithms in Heterogeneous Wireless Networks
IEEE Transactions on Mobile Computing
Performance Analysis of Vertical Handoff Algorithms with QoS Parameter Differentiation
HPCC '10 Proceedings of the 2010 IEEE 12th International Conference on High Performance Computing and Communications
Vertical handoffs in fourth-generation multinetwork environments
IEEE Wireless Communications
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During the vertical handoff procedure, handoff decision is the most important step that affects the normal working of communication. An incorrect handoff decision or selection of a non-optimal network can result in undesirable effects such as higher costs, poor service experience, degrade the quality of service and even break off current communication. The objective of this paper is to determine the conditions under which vertical handoff should be performed in heterogeneous wireless networks. In this paper, we present a comprehensive analysis of different vertical handoff decision algorithms. To evaluate tradeoffs between their performance and efficiency, we propose two improved vertical handoff decision algorithm based on Markov Decision Process which are referred to as MDP_SAW and MDP_TOPSIS. The proposed mechanism assists the terminal in selecting the top candidate network and offer better available bandwidth so that user satisfaction is effectively maximized. In addition, our proposed method avoids unbeneficial handoffs in the wireless overlay networks.