Improvement Of Routing Protocol In Perception Layer Of Internet Of Things Based On Energy Optimization

The Internet of things collects all kinds of underlying data through the perception layer,and then groups the data to the network layer transmission center through the gateway,and finally to the application terminal,providing data guarantee for customers to analyze and operate the whole Internet of things.The Internet of things relies on the perception layer network to complete information acquisition and data transmission.However,the random selection of cluster heads is prone to the problems of uneven clustering and uncoordinated cluster size.The number of clusters required by different network scale should also be different.These problems will affect the energy consumption of the network in varying degrees.In this paper,Leach(low energy adaptive clustering hierarchy,LEACH)protocol is studied and improved in order to save network energy consumption and prolong network life cycle.This paper has the following two aspects of work1.Aiming at the problem of uneven clustering and unreasonable energy consumption of LEACH protocol in the perception layer of IOT of static nodes,a stationary-node energy-based routing protocol(SERP)is proposed.For the problem that the number of cluster heads is difficult to determine,a dynamic optimal number of cluster heads is adopted.The dynamic optimal number of cluster heads can be obtained by minimizing the total energy consumption of cluster formation and stable transmission phase,which can improve the efficiency of network transmission.Then,by setting the residual energy factor and distance factor to improve the calculation of cluster head election threshold,the energy load of the network is more uniform,and the location of cluster head is more reasonable.Finally,the simulation results show that the SERP protocol can effectively prolong the lifetime of the whole network.2.Aiming at the impact of mobile nodes on network stability and topology in the perception layer of the Internet of things of dynamic nodes,a mobile-node energy-based routing protocol(MERP)is proposed.To solve the problem of data delay caused by mobile nodes,the cluster size can be controlled by calculating the number of critical cluster heads,which can avoid data loss and enhance the stability of the network.Then,by defining the mobility factor to improve the cluster head election threshold,and adding the calculation of node communication generation value in the cluster establishment stage,the cluster head can be selected from the node with the minimum relative mobility as far as possible,and the mobility of the member nodes will not make the network topology change suddenly.Experiments show that MERP can effectively reduce the data delay and prolong the overall network lifetime.The experimental results show that the two improved energy optimized routing protocols of the Internet of things can effectively save network energy consumption and improve the network lifetime.