HDEEC：面向异构网络的一种基于簇路由协议

有效地使用传感节点的能量进而延长网络寿命成为设计无线传感网路由协议的一项挑战性的工作.为了延长网络,现存的多数簇方案是面向同构网络.为此,面向异构网络,提出基于簇的分布式能量有效路由HDEEC(heterogeneous WSN distributed energy-efficient clustering)协议.HDEEC协议首先提出异构网络模型,考虑了普通节点、特优节点和超特优节点三级能量节点;然后,提出能量消耗模型;最后依据这两个模型,提出了簇头选择方案.HDEEC协议以平衡、有效方式动态改变节点被选为簇头的概率.仿真结果表明,提出的HDEEC协议能够有效延长网络寿命,比DEEC、DDEEC的网络寿命分别提高了72％、68％.

HDEEC: a Cluster-Based Routing Protocol for Heterogeneous WSN

Using the energy of sensor nodes efficiently to prolong the network lifetime is a chief challenge for designing routing protocols.To prolong WSN (wireless sensor network ) lifetime,most of the existing clustering schemes are geared towards homogeneous WSN.Therefore,a distributed energy-efficient clustering (HDEEC) scheme for heterogeneous WSN is presented to select cluster head.Firstly,a three-level heterogeneous network is proposed,which uses three types of nodes that are normal,advanced,and super.Also,an energy consumption model is designed for the three-level heterogeneous network.Another equally important contribution is the proposed energy consumption model.Besides the two proposed models,the cluster head selection scheme based HDEEC is also proposed,which dynamically changes the probabilities of nodes to become CHs in a balanced and efficient manner.Simulation results show that proposed HDEEC performs better in term of network lifetime as compared to the existing cluster formation-based protocols.The network lifetime achieved by the proposed protocol can be improved about 72% and 68% compared to DEEC,DDEEC,respectively.