基于能量有效和延迟减少的WSN多层链式数据收集协议

Multi-layered energy-efficient and delay-reducing chain-based data gathering protocol for wireless sensor network

基于LEACH、PEGA SIS、PEDAP等数据收集协议的弊端和约束,结合无线传感交通监控网络中监控区域呈带状模型、目标高速运动、节点铺设密度受限以及基站距离远等特征,提出了一种基于能量有效和延迟减少的多层链式无线传感器网络数据收集协议(MEDC)。协议提出了分层链的思想,并采用最小化总能量链构造方法生成链,leader的选取基于剩余能量最大法。实验结果表明,MEDC性能显著优于LEACH和PEGA SIS等协议,不仅能有效延长网络生命周期,且能明显减少网络延迟。

To tackle the limitation of LEACH, PEGASIS and PEDAP, a multi-layer energy-efficient and delay-reducing chain-based data gathering protocol （MEDC）for wireless sensor network was presented in consideration of the characteristics of wireless sensing traffic monitoring network （WSTMN） such as band monitoring area, high-speed target, long-distance base station and restricted network density. The protocol put forward the idea of multi-layer chain, and used the minimum total energy algorithm to construct the chain. Moreover, the maximum residual energy of nodes was the standard for selection of leaders. The experimental results show that MEDC works better than LEACH and PEGASIS. It can not only prolong the network lifetime, but also reduce the network delay.