Research On Clustering Routing Protocol For Wireless Sensor Networks

Wireless sensor network is a new technology integrated by micro-electronic technology,wireless communication,computer technology,sensor technology and embedded technology.It is widely used in intelligent home,infrastructure maintenance,medical equipment sensing,environmental monitoring,smart city and other fields.As the wireless sensor network is confronted with many difficulties and challenges because of the limited energy carried by sensor node.How to effectively reduce the energy depletion of the node and raise the network life cycle,which is of great significance to the wireless sensor network.Therefore,the main research object is to solve the problem of energy depletion of nodes,balance the load of networks and increase data transmission.Three efficient routing algorithms are proposed for homogeneous sensor networks,heterogeneous sensor networks,and large-scale network scenarios.The main research works are as follows:(1)An energy-efficient multi-hop routing algorithm based on time-slot(MHTDMA-LEACH)is designed for the homogeneous sensor networks.The algorithm effectively solve the problems such as unreasonable cluster head selection,unbalanced energy consumption,and single hop communication in the traditional cluster routing algorithm LEACH.Simulation results show that the MHTDMA-LEACH algorithm can effectively control the energy depletion of nodes,and improve the stability and the lifetime time of the network.(2)A reactive routing algorithm based on multilevel energies heterogeneous(RTL-HSEP)is designed for the heterogeneous sensor networks.The algorithm solves the problem that the heterogeneous cluster routing algorithm SEP only considers the initial energy of the nodes in the cluster head election process,and does not apply to multi-level energy heterogeneity.Simulation results show that the RTL-HSEP algorithm is more efficient and can improve the lifetime of the network in multilevel energies heterogeneous network.(3)A reactive routing algorithm based on multi-hop energies heterogeneous(MHRTL-HSEP)is designed for the large-scale network application scenarios.The algorithm effectively solves the problem of energy consumption when the RTL-HSEP algorithm is applied to large-scale scenarios.Simulation results show that the MHRTL-HSEP algorithm is more stable than RTL-HSEP algorithm in large-scale application scenarios.(4)In the MATLAB simulation platform,the performance of the three improved algorithms are compared and analyzed respectively.In the homogeneous networks scenario,the MHTDMA-LEACH algorithm compared with the LEACH and EEM-LEACH algorithms improves the stability performance by about 33.4%and 17.6%respectively.In the multi-level heterogeneous network scenario,the RTL-HSEP algorithm compared with SEP,SEP-E and ESEP-E algorithm increases the network lifetime about 26.3%,23.2%,and 18.6%respectively.In the large-scale network application scenario,the MHRTL-HSEP algorithm compared with the RTL-HSEP algorithm improves the network stability by about 15.4%.