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A Location-free Algorithm of Energy-Efficient Connected Coverage for High Density Wireless Sensor Networks

机译：高密度无线传感器网络的节能连接覆盖的无位置算法

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摘要

One of the most serious concerns for wireless sensor networks (WSN) is energy. To obtain long lifetime, one potential method is deploying redundant sensors in the WSN and let each sensor switch its state between ACTIVE and OFF. At the same time, the WSN should meet various requirements of quality of service (QoS). This paper focuses on two important measurements of OoS: sensing coverage and network connectivity. Existing researches have provided many algorithms to schedule the nodes’ states for coverage preserving, including location-free ones. Our work differs from existing location-free algorithms in several key ways: (1). We propose a novel principle on coverage preserving that is suitable for location-free schemes; (2). Following the principle, a distributed, localized and location-free node scheduling algorithm, Stand Guard Algorithm (StanGA), is proposed for treating coverage and connectivity in a unified scheme. Under certain conditions, StanGA can guarantee network connectivity and any degree of sensing coverage. Simulation results show that StanGA is scalable and robust, and also show that StanGA outperforms existing location-free algorithms even when only coverage issue is considered.
机译：能源是无线传感器网络（WSN）最为严重的问题之一。为了获得较长的使用寿命，一种潜在的方法是在WSN中部署冗余传感器，并让每个传感器在ACTIVE和OFF之间切换其状态。同时，WSN应该满足服务质量（QoS）的各种要求。本文重点介绍OoS的两个重要度量：感知覆盖率和网络连接性。现有研究提供了许多算法来调度节点的状态以进行覆盖保护，包括无位置状态。我们的工作在几个关键方面不同于现有的无位置算法：（1）。我们提出了一种适用于无位置方案的覆盖保护新原理； （2）。遵循该原理，提出了一种分布式，局部且无位置的节点调度算法，即Stand Guard算法（StanGA），用于在统一方案中处理覆盖和连接性。在某些情况下，StanGA可以保证网络连接和任何程度的感应覆盖。仿真结果表明，StanGA具有可扩展性和鲁棒性，并且即使仅考虑覆盖问题，StanGA也优于现有的无位置算法。

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