改进的基于网络寿命的RPL路由协议

Improved RPL routing protocol based on network lifetime

为提高无线传感器网络(WSN)的寿命,提出一个能量平衡路由协议的设计方案,该协议不再侧重于最小化所有节点的平均能量消耗,重点识别能量瓶颈节点,最大限度降低其能量消耗以达到网络寿命的最大化。定义一个估计的预期寿命(ELT),用该值度量这些瓶颈节点寿命,通过剩余能量和链路可靠性等约束条件,估计瓶颈节点的平均能耗,选择最优的路径,均衡能量消耗。实验结果表明,与预期发送次数(ETX)和剩余能量两种协议相比,该协议能够有效延长网络的寿命。

To improve the lifetime of wireless sensor networks(WSN),an energy-balanced routing protocol was proposed.This protocol no longer focuses on minimizing the average energy consumption of all nodes,but focuses on identifying energy bottleneck nodes and minimizing their energy consumption to maximize network lifetime.An estimated life expectancy(ELT)was defined and this value was used to measure the life of these bottleneck nodes.Through the constraints of residual energy and link reliability,the average energy consumption of the bottleneck nodes was estimated,and the optimal path was selected to balance the energy consumption.Experimental results show that compared with ETX and residual energy protocols,this protocol can effectively extend the network lifetime.