基于剩余能量和距离信息的异构网络分簇协议

针对无线传感网络WSN(Wireless Sensor Network)的网络寿命问题,提出了面向异构网络环境下的基于剩余能量和距离分簇REDC(Residual Energy and Distance Clustering)协议。REDC协议考虑了普通节点、中级节点以及高级节点,具有较高的初始能量节点称为中级节点和高级节点,余下的称为普通节点。在簇头CH(Cluster head)选举中,考虑节点的剩余能量和离基站距离信息,使得具有较高的剩余能量节点、离基站距离较近的节点有更多的机会被选为簇头CH,进而避免了剩余能量较小的节点成头簇头CH而产生节点过早失效缩短网络寿命的问题,平衡了网络内的能量消耗。仿真结果表明,与LEACH、DDEEC和SEP协议相比,提出的REDC协议具有较长的网络寿命和良好的数据传输能力。

Residual Energy and Distance based Clustering protocol for Heterogeneous WSN

To prolong WSN lifetime, Residual Energy and Distance based Clustering protocol for Heterogeneous WSN is proposed in this paper. The protocol considers three varieties of nodes i.e., normal, intermediate and advanced nodes. Nodes with higher battery energy are designated as advanced and intermediate nodes, and the remaining nodes are conventional normal nodes. The CH(cluster head) is selected based on residual energy and distance between nodes and base station, so that nodes with more residual energy has more election probability in the process of cluster head election. It also avoids reducing network lifetime caused by making the nodes with less residual energy act as cluster heads. It balances the energy consumption of network and prolongs the network survival time. Simulation results show that the proposed RDEC protocol has a longer lifetime and more good capacity of data transmission than LEACH,DEEC and SEP protocol.