Research On Energy Balance Routing Algorithm Based On Energy Heterogeneous WSNs

Wireless Sensor Networks(WSNs) are a kind of self-organizing network, which are composed of a large number of micro sensor nodes. The design goal of WSNs is intended to transfer data to the client terminal. Due to the energy of sensor nodes is limited, to maximize the network life cycle, how to design a kind of energy efficient routing algorithm becomes one of the hot issues of current research. Because heterogeneous WSNs in complicated network environment are more close to practical application, this article is based on heterogeneous WSNs, in view of the problem of how to balance the node energy consumption so as to prolong the network life makes the following three aspects research.Firstly, through the study of LEACH, SEP and DCHS typical clustering routing algorithms and the analysis of three kinds of algorithms in the election of cluster head mechanism of deficiency, this chapter puts forward the EBRA algorithm to improve the utilization efficiency of node energy equilibrium. By introducing a new weighted variables and the ratio information between the node residual energy and entire network average remaining energy, then the election of cluster head mechanism get optimize. Advanced nodes in the network can make full use of its own energy advantage, and can shorten the death time difference with common nodes, improving the utilization efficiency of node energy equilibrium.Secondly, in view of the network number of clusters instability caused by energy consumption imbalance problem, this chapter puts forward a kind of energy-efficient routing algorithm EERAFZ based on fixed partition. First, the network monitoring area is divided by the optimal number of cluster head, and then we construct the dynamic cluster head election cost function with the node data forwarding capability and energy dissipation rate. Finally under the relay node routing mechanism, we complete sensing data transfer process from the source node to the base station. Through the simulation prove that, EERAFZ algorithm can make full use of advanced nodes energy, effectively balance the energy loss in the network.Finally, under the premise of hierarchical deployment of energy heterogeneous nodes, we propose a centralized clustering routing protocol based on energy CCRPE. First, the network monitoring region is divided into sub-regions of equal area, the network node of the same sub-region have the same energy level. Then the base station concentrated to select the number of clusters according to the distribution of different energy level node, so that the network structure can be more stable. And then, through relay nodes we can realize the process of data forwarding and transfer between different energy level nodes, so that the stability of the network can be improved.