Report Success Probability/Battery Liftime Analysis of Dense IEEE 802.15.4-Based Metering Networks With Hidden Nodes
Report Success Probability/Battery Liftime Analysis of Dense IEEE 802.15.4-Based Metering Networks With Hidden Nodes
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DOI：
10.1109/jsen.2017.2661879
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发表时间：
2017-04-01
影响因子：
4.3
通讯作者：
Robert, Joerg
中科院分区：
文献类型：
--
作者：
Elshabrawy, Tallal;Shereen, Ezzeldin;Robert, Joerg
IEEE 802.15.4 及其修正案是支持计量网络无线技术的领先候选标准之一。在典型的基于 IEEE 802.15.4 的计量网络中，数千个计量收发器利用 CSMA/CA 将其计量数据发送到基站收集器。由于竞争介质访问的设备规模如此之大，仪表偶尔无法成功报告数据就变得不可避免。这可能是由于始终无法获取对高负载共享介质的访问权限或由于基站收集器处的数据包冲突。冲突的发生是由于同一冲突域内仪表的同步信道访问或由于跨不同冲突域的隐藏节点。本文介绍了一个简单的分析模型，用于评估基于 IEEE 802.15.4 的计量网络中的报告成功概率以及仪表的电池寿命。该模型根据网络中每个仪表设备的隐藏收发器的平均百分比来量化隐藏节点问题。与 OMNET++ 模拟模型的比较表明，所提出的分析表现为报告成功概率的上限。然后，根据目标报告成功概率性能，利用该模型对 IEEE 802.15.4 网络进行正确配置。结果表明，通过控制隐藏节点的百分比并适当设置每个电表允许的最大退避尝试次数，可以优化电表的预期电池寿命。
IEEE 802.15.4 and its amendments are among the leading candidates as enabling wireless technologies for metering networks. In a typical IEEE 802.15.4-based metering network, thousands of meter transceivers utilize CSMA/CA to send their metered data to a base station collector. With such enormous scale of devices competing for medium access, it becomes inevitable that meters might occasionally fail in reporting their data successfully. This could be attributed to consistent failure to grab access to the highly loaded shared medium or due to packet collision at the base station collector. Collisions occur due to synchronized channel access from meters within the same collision domain or due to hidden nodes across different collision domains. In this paper, a simple analytical model to evaluate the report success probability as well as meters' battery lifetime within IEEE 802.15.4-based metering networks is introduced. The model quantifies the hidden node problem in terms of the average percentage of hidden transceivers with respect to each meter device within the network. Comparison with an OMNET++ simulation model shows that the presented analysis behaves as an upper bound on the report success probability. The model is then utilized for proper configuration of the IEEE 802.15.4 network given a target report success probability performance. It is shown that the expected battery lifetime of meters could be optimized by controlling the percentage of hidden nodes combined with proper setting of the maximum number of allowable backoff attempts by each meter.