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A WSN Routing Algorithm for Improving the Reliability of Directed Diffusion  

Kim, Yong-Pyo (Department of Electronics and Computer Eng., Hanyang University)
Jung, Eui-Hyun (Department of Computer Science, Anyang University)
Park, Yong-Jin (Department of Electronics and Computer Eng., Hanyang University)
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Abstract
In Wireless Sensor Network, transmission errors are frequently occurred due to the node failure, battery discharge, and interference by objects. Although Directed Diffusion has been considered as a prominent Data-centric routing algorithm, it revealed some weaknesses at this kind of unexpected network errors. In order to address the problem, we proposed a radio-aware routing algorithm for improving reliability of Directed Diffusion in Wireless Sensor Networks. The proposed algorithm is aware of the network status based on the radio information of MAC and PHY layers using a cross-layer approach. The link quality and the node failure information from the acquired network status were used to decide an alternative path to provide a reliable data transmission in error-prone sensor networks. The proposed algorithm showed its effectiveness of the data delivery rate and data ratio with several simulations consisting of various error rates and the number of nodes.
Keywords
WSN; Routing; Reliability; Cross-layer; Directed Diffusion;
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