Research Of Cluster-Merge-Based Protocol For Wireless Sensor Network

Wireless sensor network is a new technology. It appeared after sensor technology, computer technology and MEMS technology developed. Almost all aspects of Wireless sensor network make rapid progress, but the energy remains a bottleneck in WSN research. As the energy of the wireless sensor network node is very limited, how to efficiently use the energy to maximize the lifetime of the network is the primary challenge of WSN. Designing protocol to extend the lifetime of the network has become an important goal of WSN.In this dissertation, the stack model of WSN are introduced briefly,and we describe the wireless sensor network routing protocol design goals, technical challenges and summarize the characteristic of routing protocols. Then, this thesis mainly make a research on software to save energy. In order to overcome the shortcomings and deficiencies of LEACH, we creat a cluster-merge-based routing protocol for wireless sensor network. This new protocol takes full advantage of the high-performance of sink and ensure the number of cluster head is optimum. Through the integration of cluster, the protocol can maintain this optimal state. It is between the cluster heads using multi-hop communications that overcome the weakness that sending data to sink consumes more energy. Finally, we simulate LEACH and the cluster-merge-based routing protocol in MATLAB and implement the cluster-merge-based routing protocol with nesC in TinyOS.Comparative analysis of simulation results showed that the improved procotol has better performance in energy consumption, mortality and network lifetime. The test results show that the nesC implementation of the cluster-merge-based routing protocol meets the design requirements totally.