Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (9): 104-109,122.

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Fuzzy AHP-Based Multi-Attribute Vertical Handover Algorithm

Jiang Kai-yuan  Gu Xue-mai  Guo Qing  Ning Lei  Chen Li-ming   

  1. Communication Research Center,Harbin Institute of Technology,Harbin 150001,Heilongjiang,China
  • Received:2012-04-24 Revised:2012-06-19 Online:2012-09-25 Published:2012-08-01
  • Contact: 顾学迈(1957-) ，男，教授，博士生导师，主要从事卫星通信、数字通信网络研究． E-mail: guxuemai@hit．edu．cn E-mail:jiangkaiyuan@ hit.edu.cn
  • About author:姜开元(1982-) ，男，博士生，主要从事无线异构网络资源管理研究．
  • Supported by:

    国家科技重大专项( 2010ZX03005-003)

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Abstract:

In order to offer the seamless handover between different networks and the continuity guarantee of the traffic for mobile nodes,a multi-attribute vertical handover algorithm ( FAVHO) is proposed based on the fuzzy analytic hierarchy process ( FAHP) . In the algorithm,according to the fuzziness of human mind,fuzzy numbers are adopted to describe the comparison results of the importance of attributes and a fuzzy judgment matrix is established to eliminate the differences in the consistency between the judgment matrix and the human mind in traditional algorithms. For the purpose of improving the handover effectiveness,an adaptive timer is designed in view of the motion state of the mobile node and the load state of the target base station. Simulated results show that the proposed algorithm can improve the handover performance,increase the system throughput and reduce the dropping probability of the system.

Key words: heterogeneous networks, wireless networks, vertical handover, analytic hierarchy process, fuzzy logic, adaptive timer

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