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Vol. 171, Issue 5, May 2014, pp. 106-114

 

Bullet

 

Self-Adaptive Context Aware Routing Protocol for Unicast Communication
in Delay and Tolerant Network
 

1,2 Yunbo Chen

1 School of Computer and Communication Engineering, University of Science and Technology Beijing, 100083, China
2 Beijing Key Laboratory of Knowledge Engineering for Materials Science, 100083, China
Tel.: +86-010-62334708, fax: +86-010-62334708

E-mail: big2small@139.com

 

Received: 11 March 2014 /Accepted: 30 April 2014 /Published: 31 May 2014

Digital Sensors and Sensor Sysstems

 

Abstract: At present, most of research works in mobile network focus on the network overhead of the known path which exists between the sender and the receiver. However, the trend of the current practical application demands is becoming increasingly distributed and decentralized. The Delay and Tolerant Network (DTN) just comes out of such background of the conflicts between them. The DTN could effectively eliminate the gap between the mobile network and the practical application demands. In this paper, a Self-Adaptive Context Aware Routing Protocol (SACARP) for the unicast communication in delay and tolerant networks is presented. Meanwhile, according to the real-time context information of DTN, the Kalman filter theory is introduced to predict the information state of mobility for the optional message ferrying node, and then gives the optimal selection strategy of the message ferrying nodes. The simulation experiments have shown that, compared to the familiar single- copy and multi-copy protocols, the SACARP proposed in this paper has better transmission performance and stability, especially when the network is free, the protocol would keep a good performance with fewer connections and less buffer space.

 

Keywords: Self-adaptive routing, Unicast communication, Kalman filter theory, Delay network, Tolerant network.

 

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