An Improved LEACH Protocol Combines With Information Entropy

As a special Ad hoc network,wireless sensor network consists of a number of sensor nodes with capabilities such as environment awareness,data collection,fusion computing,and wireless communication.Along with the development of sensing technology,network technology,and data processing technology,WSN has been extended from simple military applications to all walks of life.In WSN,the classical low-power adaptive clustering hierarchical LEACH protocol requires nodes to select cluster heads periodically,and reduces the amount of data transmitted in the network by clustering.Compared with other WSN routing protocols at the same time,its performance is better.However,the protocol has not a operation that reduces redundancy for the transmitted data,thus its energy-saving effect is not satisfactory.In the process of routing,It is a single-hop direct transmission mode,without considering the residual energy of the node,the energy consumption balance of the node is not realized.Aiming at these two shortcomings of LEACH protocol,this paper proposes an improved LEACH protocol combines with information entropy(LEACH-CIE).This method combines information entropy theory to reduplicate the huge amount of data in WSN,and designs a multi-hop forwarding routing based on relative entropy to achieve better data transmission process,which makes the network run healthier and survive longer.The main work and contents of this paper are as follows:(1)Studying the existing classical WSN routing protocols,analyzing the advantages and disadvantages of LEACH protocol and its improved protocols,gaining the design ideas of this paper.(2)Combining with the concept of information entropy,the relativity of node's historical period can be calculated by relative information entropy method,and the redundancy of data can be judged.By reducing redundant data transmission,the energy consumption of the network can be reduced and it can make up for the lack of LEACH which does not have the operation of reducing redundancy.(3)Improving the routing rules of single-hop direct transmission in LEACH protocol.Aiming at the communication environment of intra-cluster and inter-cluster,considering the nodes residual energy,communication distance and energy consumption ratio of relay node and source node,the node energy consumption model is used to calculate the data,refine the node forwarding conditions and balance the energy consumption rate of network node.