摘要
在研究无线传感器优化的问题中,传感器的簇首节点选择的合理性直接决定传感器网络寿命的长短。由于传统的算法在确定簇首过程中忽略了邻居节点的状态信息,导致簇内节点过早的出现盲节点,从而降低网络的生存时间。针对传统LEACH算法能量消耗快、网络生存时间短的缺点,提出了一种改进的LEACH算法(ILEACH)。在分簇阶段簇首选择时充分考虑节点剩余能量和地理位置因素;在稳定传输阶段,采用改进的簇首间多跳路由机制,并在转发过程中再次进行数据融合。对ILEACH算法进行仿真实验,仿真结果表明,与经典分簇路由算法LEACH相比I,LEACH算法有效平衡节点间开销,提高能量有效性,降低了网络整体能耗,有效地延长了网络的寿命。
In the research on optimization of wireless sensor,the rationality of sensor nodes choosing directly determines the life length of sensor networks.Because the traditional algorithm in the process of cluster-heads neighbors ignores the state information,causes the blind nodes appears prematurely in the cluster,which can reduce the network life time.This paper entirely analyzes LEACH routing protocols,and suggests a novel routing protocol.In the stage of choosing cluster-heads,the factors of residual energy and nodes location are fully considered,and in the stage of stable transmission,the improved mechanism of multi-hop routing among cluster-heads is used,and the data fusion is carried out again in the transmission process.Simulation results show that the new protocol has better performance compared with the typical clustering routing protocols,enhances the effectiveness of energy,distributes the total energy consumption evenly,and prolongs the network life time significantly.
出处
《计算机仿真》
CSCD
北大核心
2011年第3期170-173,共4页
Computer Simulation
关键词
路由算法
剩余能量
多跳传输
无线传感器网络
Routing protocol
Energy dissipation
Multi-hop
Wireless sensor networks
