Self-adaptive sleep scheduling for wireless sensor networks

Self-adaptive sleep scheduling for wireless sensor networks
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无线传感器网络的自适应睡眠调度

DOI:
10.1504/ijwmc.2015.070939
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发表时间:
2015-08
影响因子:
--
通讯作者:
付晓东
付晓东
中科院分区:
--
文献类型:
--
作者:
张晶;王彬;王剑平;付晓东

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无线传感器网络一般包括大量廉价的嵌入式设备,由电池供电。因此,无线传感器网络在资源耗散方面受到限制。在设计无线传感器网络时,如何优化功耗以延长网络寿命是一个核心问题。在实际应用中,由于传感器节点的硬件成本相对较低,无线传感器网络的节点往往分布密集。网络拓扑结构可以利用额外节点带来的数据冗余进行优化。针对高密度无线传感器网络的节能问题,在经典拓扑控制算法ASCENT的基础上,提出了一种自适应休眠调度SASS算法。改进了ASCENT的状态转换机制,并考虑了数据冗余问题。通过实验证明,SASS算法具有更高的能量效率和更好的稳定性。
The wireless sensor network WSN generally includes a large amount of cheap embedded equipment powered by battery. Therefore, the WSN is restricted in the aspect of resource dissipation. When designing WSN it is one of the core problems to optimise the power dissipation in order to lengthen the network life. In real-world usage, nodes of WSN are often densely distributed because nowadays the hardware cost of sensor nodes is relatively low. The net topological structure can be optimised by taking advantage of the data redundancy brought out by extra nodes. Thus we present a Self-Adaptive Sleep Scheduling SASS algorithm against the energy-conserving problem of high-density WSN on the basis of a classic topology control algorithm: ASCENT. We improve the state transition mechanism of ASCENT and take the data redundancy into consideration. Through the experiments, it is proved that SASS is more energy efficient and improves the stability.
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