摘要
在实际应用中,无线传感器网络(WSNs)中的节点分布不均匀且节点能量有限,由于节点工作量大小不同,导致节点能量损耗不均衡,从而影响WSNs生存周期。为了延长网络生存周期,提出一种基于分簇的WSNs GPSR协议。该协议首先将网络划分为若干个簇,每个簇需选择合适的簇头,而簇头选择以剩余能量为指标,并在簇内轮换。簇内采用改进的贪婪算法将数据汇集到簇头节点,有效避免了局部最小化问题。仿真实验表明:该协议能延长网络生存周期,提高数据传输成功率。
In practical application,nodes distribution in wireless sensor networks（ WSNs） are not uniform and energy of nodes is limited. Different workload of nodes results in unbalanced energy consumption of nodes,which affects life cycle of WSNs. In order to prolong network lifecycle,a GPSR protocol for WSNs based on clustering is proposed. In this protocol,the network is divided into several clusters,each cluster needs to choose appropriate cluster head,cluster head choosing use remaining energy as index and rotate in cluster. Improved greedy algorithm is used in cluster to gather data to cluster head node,which effectively avoids problem of local minimization.Simulation results show that the protocol can prolong network lifecycle and improve success rate of data transmission.
出处
《传感器与微系统》
CSCD
2015年第12期124-126,130,共4页
Transducer and Microsystem Technologies
基金
中国水产科学研究院院部中央级公益性科研院基本科研业务费专项资金资助项目(2014A10XK06)
