Vertical Handoff Decision Algorithm combined Improved Entropy Weighting with GRA for Heterogeneous Wireless Networks

• Shasha Zhao,
• Fei Wang,
• Yueqiang Ning,
• Yi Xiao,
• Dengying Zhang,

Vol. 14, No. 11, November 30, 2020
10.3837/tiis.2020.11.020, Download Paper (Free):

• heterogeneous wireless network
• MMT
• vertical handoff
• Improved entropy
• GRA

Abstract

Future network scenario will be a heterogeneous wireless network environment composed of multiple networks and multimode terminals (MMT). Seamless switching and optimal connectivity for MMT among different networks and different services become extremely important. Here, a vertical handoff algorithm combined an improved entropy weighting method based on grey relational analysis (GRA) is proposed. In which, the improved entropy weight method is used to obtain the objective weights of the network attributes, and GRA is done to rank the candidate networks in order to choose the best network. Through simulation and comparing the results with other vertical handoff decision algorithms, the number of handoffs and reversal phenomenon are reduced with the proposed algorithm, which shows a better performance.

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