Research On Time Synchronization Algorithm In Wireless Sensor Networks

Wireless sensor network is the development of communication technology,embedded technology and sensor technology,and it has become an important research and application field.At the same time,become the basis for a variety of application research in wireless sensor network.The time synchronization in wireless sensor network is the precondition for the effective application,provides basic services for a variety of application services.Because the traditional time synchronization technology cannot be applied directly to wireless sensor networks,the research and design of new and more suitable for wireless sensor network application scenarios time synchronization technology has become an important research topic.In this paper,according to the application characteristics of wireless sensor network time synchronization technology and related to,on the basis of prior art research results on the proposed new time synchronization algorithm and applied based on multi-hop video transmission in wireless sensor networks,specific work are summarized as follows:(1)In view of the problems of network topology change response capacity problems in the existing technology,based on second-order leader following consensus algorithm introduced wireless sensor network time synchronization,a new second-order consensus time synchronization algorithm is proposed.By introducing the second-order leader following consensus algorithm based on,the new time synchronization algorithm for the topology information effectively reflect changes in the time parameter to improve the time synchronization algorithm to deal with the complex network environment ability.Simulation results verify the effectiveness of the proposed algorithm,and prove its ability to cope with the change of network topology.(2)The prediction mechanism is introduced into the time synchronization problem,and a two-order uniform time synchronization algorithm based on prediction mechanism is proposed.The proposed algorithm not only considers the current time information as the basis of time synchronization,but also considers the time information of the past as a condition for the execution of the prediction mechanism.Simulation results show that the proposed algorithm is effective for two-order uniform time synchronization algorithm based on prediction mechanism,and the new algorithm has the advantages of fast convergence and high accuracy.