Research On Location-based Clustering Routing Protocol For Multi-sink Wsn

Wireless Sensor Network(WSN)is a multidisciplinary technology that combines communications,sensors and embedded systems to form a self-organizing wireless network by integrating all the functions of information acquisition,processing and transmission on inexpensive,battery-powered,low-power sensor nodes.The sensor network can be customized and optimized to make the transmission process efficient and energy saving,thus maximizing the service duration of the sensor network.In an environment where multiple sinks are deployed outside the network,nodes at the edge of the network require less energy to communicate with the sinks than other nodes,but they are far away from most of the nodes and are not suitable as cluster heads.The traditional LEACH algorithm has a large fluctuation in the number of cluster heads per round and the distribution is not reasonable.To address the above problems this paper proposes clustering routing protocols for multiple sinks deployed outside the network environment with relay nodes,including the MSCRR protocol for distributed control and the MSCRR-C protocol for centralized control.The MSCRR protocol improves the distributed cluster head election method to ensure the same number of cluster heads in each round,which further reduces the unnecessary energy consumption.The MSCRR-C can obtain more reasonable clustering results than the MSCRR protocol.As tested by OMNeT++simulation,the routing algorithm proposed in this paper can make the energy consumption of nodes more balanced compared with other comparative algorithms and effectively extend the lifetime of the network.