Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (5): 78-83.doi: 10.3969/j.issn.1000-565X.2011.05.014

• Computer Science & Technology • Previous Articles     Next Articles

Trusted Routing of Double-Layer Satellite Networks Based on D-S Evidence Theory

Liu Xiao-yue  Yang Kai  Ma Jian-feng   

  1. Key Laboratory of Computer Networks and Information Security,Ministry of Education,Xidian University,Xi’an 710071,Shaanxi,China
  • Received:2010-09-20 Revised:2010-12-07 Online:2011-05-25 Published:2011-04-01
  • Contact: 刘小跃(1973-) ，男，韩山师范学院讲师，主要从事移动无线安全以及航天网络安全研究． E-mail:xy_liu@mail.xidian.edu.cn
  • About author:刘小跃(1973-) ，男，韩山师范学院讲师，主要从事移动无线安全以及航天网络安全研究．
  • Supported by:

    国家自然科学基金资助项目( 60872041) ; 广东省自然科学基金资助项目( 10152104101000004)

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Abstract:

In satellite networks,security mechanisms are required to ensure the reliability of data transmission. However,the existing trusted evaluation models can not meet the requirements of inherent characteristics of satellite networks. In order to solve this problem,a trusted evaluation model based on satellite nodes is proposed with the help of the D-S evidence theory,through which the trustworthiness of direct trust and indirect trust of satellite nodes can be easily obtained. Moreover,a trusted on-demand satellite routing ( T-ODSR) protocol is proposed,which can select trusted routes to transmit data according to the trustworthiness of satellite nodes. Experimental results indicate that,as compared with the classical double-layer on-demand satellite routing ( ODSR) protocol,T-ODSR protocol is more effective in resisting network attacks and improving network reliability,robustness and security,especially in the presence of a large number of hostile nodes.

Key words: network security, satellite network, routing, D-S evidence theory, trust evaluation model