Bounded end-to-end delay with Transmission Power Control techniques for rechargeable wireless sensor networks
Bounded end-to-end delay with Transmission Power Control techniques for rechargeable wireless sensor networks
复制标题
可充电无线传感器网络的有界端到端延迟与传输功率控制技术
DOI：
10.1016/j.aeue.2013.11.001
复制
发表时间：
2014-01-01
影响因子：
3.2
通讯作者：
Zhang, Fuquan
中科院分区：
文献类型：
--
作者：
Gao, Demin;Wu, Guoxin;Zhang, Fuquan
由于能源的可用性不稳定，可充电无线传感器网络的一个基本问题是节点必须不断调整其占空比。另一方面，从周围环境收集的能量通常不足以持续为传感器节点供电。因此，节点必须以非常低的占空比运行。这些独特的特性导致数据包传输延迟在可充电 WSN 中至关重要。同时，节点的储能装置总是有限的。因此，当网络可以从环境中获取过多的能量时，节点并不总是有利于节省能量。在这项工作中，我们引入了一种通过提高节点传输功率来限制E2E延迟的方案。我们提供了一种算法，通过增加传输功率提高的节点的最小 h 数量来找到从节点到接收器的最小睡眠延迟。为了限制从源节点到接收器的端到端延迟，我们提出了一种端到端延迟维护解决方案。通过大量的仿真和实验，我们证明了我们的延迟约束维护方案可以有效地在可充电无线传感器网络中提供端到端延迟保证。 (c) 2013 年爱思唯尔有限公司。版权所有。
Due to sporadic availability of energy, a fundamental problem in rechargeable wireless sensor networks is nodes have to adjust their duty cycles continuously. On the other hand, the energy harvested from surrounding environment usually is not enough to power sensor nodes continually. Therefore, the nodes have to operate in a very low duty cycle. These unique characteristics cause packet delivery latency is critical in Rechargeable WSNs. At the same time, energy storage device of a node is always limited. Hence, the node cannot be always beneficial to conserve energy when a network can harvest excessive energy from the environment. In this work, we introduce a scheme by improving transmission power of nodes to bound E2E delay. We provide an algorithm for finding the minimal sleep latency from a node to a sink by increasing minimal h number of nodes whose transmission power improved. For bounding E2E delay from source node to the sink, we propose an E2E delay maintenance solution. Through extensive simulation and experiments, we demonstrate our delay bound maintenance scheme is efficient to provide E2E delay guarantees in rechargeable wireless sensor networks. (c) 2013 Elsevier GmbH. All rights reserved.