Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article On Multipath Routing in Multihop Wireless Networks: Security, Performance, and Their Tradeoff | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2009 Article ID 946493 13 pages doi 2009 946493 Research Article On Multipath Routing in Multihop Wireless Networks Security Performance and Their Tradeoff Lin Chen and Jean Leneutre Department of Computer Science and Networking LTCI-UMR 5141 laboratory CNRS-Telecom Paris Tech 46 Rue Barrault 75013 Paris France Correspondence should be addressed to Lin Chen lchen@ Received 29 January 2009 Accepted 1 June 2009 Recommended by Hui Chen Routing amid malicious attackers in multihop wireless networks with unreliable links is a challenging task. In this paper we address the fundamental problem of how to choose secure and reliable paths in such environments. We formulate the multipath routing problem as optimization problems and propose algorithms with polynomial complexity to solve them. Game theory is employed to solve and analyze the formulated multipath routing problem. We first propose the multipath routing solution minimizing the worst-case security risk . the percentage of packets captured by attackers in the worst case . While the obtained solution provides the most security routes it may perform poorly given the unreliability of wireless links. Hence we then investigate the multipath routing solution maximizing the worst-case packet delivery ratio. As a natural extension to achieve a tradeoff between the routing security and performance we derive the multipath routing protocol maximizing the worst-case packet delivery ratio while limiting the worst-case security risk under given threshold. As another contribution we establish the relationship between the worst-case security risk and packet delivery ratio which gives the theoretical limit on the security-performance tradeoff of node-disjoint multipath routing in multihop wireless networks. Copyright 2009 L. Chen and J. Leneutre. This is an open access article distributed under the Creative Commons .
