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Aiming to alleviate the drawbacks of the existing power-aware routing algorithms caused by the hotspot problem and Near-Far problem, this paper propose an improved uneven clustering routing algorithm , named as Multilayer Cluster Routing based on Cooperative Relaying (MCRCR). This new algorithm protocol introduces the super-cluster-head node and the relay node conceptions to avoid the hotspots and balance the node energy consumption. After a series of mathematical calculations, the energy consumption for each type of sensor node is provided. Based on MATLAB simulation results, a conclusion can be shown that the MCRCR algorithm is significantly effective in extending the operation lifetime of homogenous WSNs. In this paper, a new algorithm protocol named Multilayer Cluster Routing based on Cooperative Relaying (MCRCR) is proposed to tackle the hotspot problem and Near-Far problem which existing routing protocols do not consider. MCRCR algorithm protocol combines the benefits of hierarchical routing and cooperative relaying routing to improving the energy efficiency of WSNs. The residual of this paper is organized as follows. In Section Ⅱ, details about the MCRCR algorithm protocol are discussed. Section Ⅲ describes the system model and energy consumption model of the MCRCR, respectively. Section Ⅳ presents the performance comparison of MCRCR with the LEACH via simulations. Finally, Section Ⅴ concludes the paper.

An Improved Uneven Multilayer Cluster Routing Algorithm for Homogeneous WSNs Based on Cooperative Relaying