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Vol. 159, Issue 11, November 2013, pp. 126-131




Towards a Confidence-based Routing Algorithm in Delay Tolerant Network
1 Li-Xia Liu, 2 Xiao-Hua Qiu

1 Dept. of Information Engineering, Engineering University of CAPF, Xi'an, 710086, China

1 E-mail: wjllx939@tom.com


Received: 2 August 2013   /Accepted: 25 October 2013   /Published: 30 November 2013

Digital Sensors and Sensor Sysstems


Abstract: High latency, low data rate and intermittent network connectivity make Delay Tolerant Network (DTN) cannot copy routing protocols in traditional network. Because of node mobility, node cache limitations and energy, it is very difficult to select relay nodes. The paper proposed a Confidence Based Routing Algorithm (CBRA) that uses factor combination of message forward successful rate, contact rate and free buffer rate so as to make routing decision and selection for better relay node. It can effectively avoid too much network knowledge or too many copies to achieve higher successful rate as other routing protocols. Simulation experiment results on ONE compared with Direct Contact, Epidemic Routing, Two-Hop Relay and PROPHET algorithm show that CBRA has advantages that small redundant, low buffer occupancy rate and low energy consumption.


Keywords: Delay tolerant network, Confidence, Contact, Occupied cache.


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