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Title |
Energy-Efficient Dynamic Source Routing Protocol for Wireless Sensor Networks |
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Author |
S.C. Chabalala, T.N. Muddenahalli, F. Takawira |
| Citation |
Vol. 12 No. 10 pp. 98-109 |
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Abstract |
Routing presents a significant design challenge to meet various applications requirements in wireless sensor networks (WSNs) communications. In this paper, we present a minimum delay multipath routing protocol with modification to the standard dynamic source routing (DSR) protocol, which aims to improve energy efficiency and minimize end-to-end delay to provide quality of service (QoS) support for delay sensitive applications in WSNs. The presented Energy-Efficient DSR (EEDSR) protocol takes into account, end-to-end delay and reliability of wireless channel links to establish a routing metric used to determine the cost associated with individual routes between a source node and a destination node. Each source node records multiple disjoint routes to the same destination. Selection of the primary route for data transmissions is based on the derived routing metric to give preference to the most reliable route with minimum end-to-end delay, reducing energy consumption which would otherwise be incurred during packet retransmissions for reliable communication. Simulation results reveal improved performance by the EEDSR protocol in comparison with the standard DSR protocol, most importantly when used for routing in unreliable channel link conditions with high error rates. |
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Keywords |
Channel Reliability, Energy-Efficiency, Error-Rates, Routing Protocols, Wireless Sensor Networks (WSNs). |
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