A. Abraham et al. (Eds.): ACC 2011, Part III, CCIS 192, pp. 143–156, 2011. © Springer-Verlag Berlin Heidelberg 2011 Energy Efficient Routing Protocols for Wireless Sensor Networks Using Spatial Correlation Based Collaborative Medium Access Control A. Rajeswari 1 and P.T. Kalaivaani 2 1 Department of ECE, Coimbatore Institute of Technology, Coimbatore -14 2 Department of ECE, Jansons Institute of Technology, Coimbatore -59 rajeswari@cit.edu.in, kalaivani.p.t@gmail.com Abstract. Wireless Sensor Networks (WSNs) are wireless networks consisting of a group of small, inexpensive nodes, which collect and disseminate significant data. Nodes in a wireless Sensor Networks have various energy and computational constraints due to their inexpensive, random method of deployment. Wireless sensor networks are utilized in a wide range of applications including battlefield surveillance, smart home environments, habitat exploration of animals and vehicle tracking. Energy efficiency is one critical issue for sensor networks because many sensors are equipped with batteries that have limited life time. In this paper, comparison of energy efficient routing protocols for Wireless Sensor Networks using spatial correlation based collaborative medium access control is proposed. A model for WSN is proposed using spatial correlation based collaborative medium access control (CC-MAC) with AODV and DSR and DSDV. Simulation results have been obtained by using Ns2. From the results, the performance of AODV is better compared to the other two protocols such as DSR and DSDV. Keywords: Wireless Sensor Network (WSN), Spatial Correlation, Medium Access Control (MAC), Correlation based Collaborative Medium Access Control (CC-MAC), Adhoc On Demand Distance Vector Routing (AODV), Dynamic Source Routing (DSR), Destination Sequenced Distance Vector (DSDV). 1 Introduction An emblematic sensor node in WSN consists of a wireless communication unit and a processing unit, a sensing unit, and a power supply unit. The energy source of a node is generally considered non-rechargeable. Therefore energy conservation is a major research challenge in WSN. For practical deployment, Wireless Sensor Networks must be energy efficient. Using Energy as a vital resource in WSNs, Several MAC protocols have already been proposed to get higher energy efficiency during long idle