A novel differentiated coverage-based lifetime metric for wireless sensor networks

IF 4.4 3区 计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS
Derya Nurcan-Atceken , Aysegul Altin-Kayhan , Bulent Tavli
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引用次数: 0

Abstract

This paper delves into optimizing network lifetime (NL) subject to connected-coverage requirement, a pivotal issue for realistic wireless sensor network (WSN) design. A key challenge in designing WSNs consisting of energy-limited sensors is maximizing NL, the time a network remains functional by providing the desired service quality. To this end, we introduce a novel NL metric addressing target-specific coverage requirements that remedies the shortcomings imposed by conventional definitions like first node die (FND) and last node die (LND). In this context, while we want targets to be sensed by multiple sensors for a portion of the network lifetime, we let the periods, during which cells are monitored by at least one sensor, vary. We also allow the ratios of multiple and single tracking times to differ depending on the target and incorporate target-based prioritization in coverage. Moreover, we address role assignment to sensors and propose a selective target-sensor assignment strategy. As such, we aim to reduce redundant data transmissions and hence overall energy consumption in WSNs. We first propose a unique 0-1 mixed integer programming (MIP) model, to analyze the impact of our proposal on optimal WSN performance, precisely. Next, we present comprehensive comparative studies of WSN performance for alternative NL metrics regarding different coverage requirements and priorities across a wide range of parameters. Our test results reveal that by utilizing our novel NL metric total coverage time can be improved significantly, while facilitating more reliable sensing of the target region.

基于覆盖范围的新型无线传感器网络寿命指标
本文探讨了在满足连接覆盖要求的前提下优化网络寿命(NL)的问题,这是现实无线传感器网络(WSN)设计中的一个关键问题。设计由能量有限的传感器组成的 WSN 时面临的一个关键挑战是最大化 NL,即网络通过提供所需的服务质量而保持功能的时间。为此,我们引入了一种新的 NL 指标,以满足特定目标的覆盖要求,弥补了传统定义(如第一个节点死亡(FND)和最后一个节点死亡(LND))的不足。在这种情况下,虽然我们希望目标在网络生命周期的一部分时间内被多个传感器感知,但我们允许至少有一个传感器监测单元的时间段各不相同。我们还允许多个和单个跟踪时间的比例因目标而异,并在覆盖范围中加入基于目标的优先级排序。此外,我们还解决了传感器的角色分配问题,并提出了一种选择性目标-传感器分配策略。因此,我们的目标是减少冗余数据传输,从而降低 WSN 的总体能耗。我们首先提出了一个独特的 0-1 混合整数编程(MIP)模型,以精确分析我们的建议对 WSN 最佳性能的影响。接下来,我们针对不同的覆盖要求和优先级,在广泛的参数范围内对替代 NL 指标的 WSN 性能进行了全面的比较研究。我们的测试结果表明,通过使用我们新颖的 NL 指标,总覆盖时间可以显著改善,同时促进对目标区域更可靠的感知。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Ad Hoc Networks
Ad Hoc Networks 工程技术-电信学
CiteScore
10.20
自引率
4.20%
发文量
131
审稿时长
4.8 months
期刊介绍: The Ad Hoc Networks is an international and archival journal providing a publication vehicle for complete coverage of all topics of interest to those involved in ad hoc and sensor networking areas. The Ad Hoc Networks considers original, high quality and unpublished contributions addressing all aspects of ad hoc and sensor networks. Specific areas of interest include, but are not limited to: Mobile and Wireless Ad Hoc Networks Sensor Networks Wireless Local and Personal Area Networks Home Networks Ad Hoc Networks of Autonomous Intelligent Systems Novel Architectures for Ad Hoc and Sensor Networks Self-organizing Network Architectures and Protocols Transport Layer Protocols Routing protocols (unicast, multicast, geocast, etc.) Media Access Control Techniques Error Control Schemes Power-Aware, Low-Power and Energy-Efficient Designs Synchronization and Scheduling Issues Mobility Management Mobility-Tolerant Communication Protocols Location Tracking and Location-based Services Resource and Information Management Security and Fault-Tolerance Issues Hardware and Software Platforms, Systems, and Testbeds Experimental and Prototype Results Quality-of-Service Issues Cross-Layer Interactions Scalability Issues Performance Analysis and Simulation of Protocols.
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