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An Energy-Efficient Real-Time Routing Protocol for Differentiated Data in Wireless Sensor Networks

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4 Author(s)
Mazinani, S.M. ; Dept. of Electr. Eng., Khayyam Higher Educ. Inst., Mashhad, Iran ; Naderi, A. ; Setoodefar, M. ; Shirazi, A.Z.

Many wireless sensor network (WSN) applications require real-time communication. One of the most important and challenging issues in real-time applications of resource-constrained WSNs is providing end-to-end delay requirement. To address such an issue a few QoS routing protocols have been proposed. Also, in many applications, the delay level required by the data packets is different. In this paper, we focus on building an energy-efficient real-time routing protocol called EERT which routes the differentiated classified packets towards the destination node via a modular approach. It takes into account both power transmission costs and residual energy of routers along with nearness of node to the shortest path and link usage in the energy-efficient module in order to prolong the network life time. Moreover, EERT employs a new policy called re-routing policy which allows the packets of a specific class to be routed as the packets of a lower/higher real-time class in particular situations. In this way, it can improve real-time performance by means of reducing the packet dropping in routing decisions.

Published in:

Engineering of Complex Computer Systems (ICECCS), 2012 17th International Conference on

Date of Conference:

18-20 July 2012