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Energy Efficiency Optimized LEACH Protocol Clustering Methods And Data Transmission Algorithm Design

Posted on:2022-01-04Degree:MasterType:Thesis
Country:ChinaCandidate:H WuFull Text:PDF
GTID:2518306341457914Subject:Electronics and Communications Engineering
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Wireless Sensor Network(Wireless Sensor Network,WSN)is a connected network system that deploys a variable number of sensors in the monitoring area in an unstructured but logically orderly manner,the sensors obtain relevant information through control messages transmitted through wireless channels,the system has the ability to sense the environment,collect and process data,and exchange information.With the in-depth application of wireless sensor networks,experts and scholars in different fields have also carried out research.In the 5G era,people have higher requirements for network coverage,and it is particularly necessary to deploy networks in complex geographical environments and remote areas.However,because this type of area cannot be manipulated,the nodes in the sensor network can only rely on a single battery to achieve energy supply,once the limited energy of all nodes is exhausted,the system will stop working.Therefore,how to maximize the energy utilization rate so that the entire network system can be utilized for as long as possible has become an urgent problem to be solved.This article takes the network layer of the communication protocol as the entry point,and designs an efficient algorithm based on LEACH(Low Energy Adaptive Clustering Hierarchy)protocol to achieve the purpose of reducing energy consumption speed,extending the network life cycle,and improving data transmission efficiency.The clustering protocol has the advantages of separation of transfer and control and flexible topology scalability,the typical protocol in the clustering protocol is LEACH,which is also the preferred protocol for solving energy consumption problems.Through the analysis of the shortcomings of the traditional LEACH protocol and the research and reference of related improved algorithms,this paper proposes two schemes to achieve optimization,and judges whether the proposed new algorithm is feasible according to the performance data obtained by the simulation software.The specific ideas are as follows:The first is the LEACH extreme double-head clustering scheme combined with the cuckoo search algorithm.The traditional LEACH protocol has uncertainty in the election of cluster heads,which has an adverse impact on the energy efficiency of the entire network,considering that the cluster heads need to consume a certain amount of energy in managing the nodes in the cluster and transmitting data,the remaining energy of the node and the distance to the base station are added when selecting the cluster heads,the cluster with the highest node saturation and the cluster with the cluster head farthest from the base station adopt the dual cluster head mechanism,the former sub-cluster head shares the energy consumption of the main cluster head in management,and the latter sub-cluster head reduces the energy consumption of the main cluster head in transmission,finally,in the data transmission stage,each cluster head uses the cuckoo search algorithm to select the forwarding node to establish the inter-cluster route between the current cluster head and the base station.The cuckoo search algorithm can quickly select the best relay node to avoid the formation of a single inter-cluster route.The second is the evolutionary game inter-cluster routing optimization scheme under 5G.Based on the service quality requirements proposed by 5G technology,the reliability factor and the delay factor are introduced to enrich the factors for selecting the cluster heads,in addition,when determining the multi-hop routing between clusters for data transmission,the candidate cluster heads are taken as independent game participants,and each candidate player takes turns acting as the only forwarder based on the "remaining energy" and the "number of candidate cluster heads" to maximize revenue,However,if there is no candidate forwarding cluster head or multiple candidate forwarding cluster heads,the final forwarding node is determined according to the "distance election method" to optimize the transmission path.In this paper,the simulation software MATLAB2018 a is used to simulate the real network environment.Under the same parameter configuration,the sensor runs the LEACH protocol,third-party protocol and the improved algorithm respectively,and draws the experimental results graphs under different performance indicators.From this evaluation of the pros and cons of the algorithms.The results show that the two algorithms proposed in this paper can reduce the death rate of network nodes,prolong the life of the network,improve the stability of work,and improve the efficiency of data transmission.
Keywords/Search Tags:wireless sensor network, LEACH protocol, cuckoo search algorithm, evolutionary game, balanced energy consumption
PDF Full Text Request
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