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| Research of Situation-aware Routing Method in Delay Tolerant Network |
| Wu Ya-hui Deng Su Huang Hong-bin |
| Key Laboratory of C4ISR, National University of Defense Technology, Changsha 410073, China |
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Abstract The characteristic of loose connectivity of Delay Tolerant Network (DTN) is a huge challenge for data delivery. All of the routing methods do not thoroughly use the status of the peer, so SARM (Situation-Aware Routing Method) is proposed. SARM estimates the delivery probability of a peer according to the peer’s situation, and copies the message to its neighbor whose delivery probability is bigger. A queue management method is proposed according to the message’s age, time of left and the number of copies. Simulation shows that SARM achieves a higher message delivery ratio and lower delivery delay without more transmission overhead.
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Received: 23 April 2010
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Corresponding Authors:
Wu Ya-hui
E-mail: yahui_wu@163.com
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2011, Vol. 33 
