Reliable upgrade of group communication software in sensor networks

Proceedings of the First IEEE International Workshop on Sensor Network Protocols and Applications, 2003. Pub Date : 2003-05-11 DOI:10.1109/SNPA.2003.1203359

P. V. Krishnan, L. Sha, K. Mechitov

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引用次数: 7

Abstract

Communication is critical between nodes in wireless sensor networks. Upgrades to their communication software need to be done reliably because residual software errors in the new module can cause complete system failure. We present a software architecture, called cSimplex, which can reliably upgrade multicast-based group communication software in sensor networks. Errors in the new module are detected using statistical checks and a stability definition that we propose. Error recovery is done by switching to a well-tested, reliable safety module without any interruption in the functioning of the system. cSimplex has been implemented and demonstrated in a network of acoustic sensors with mobile robots functioning as base stations. Experimental results show that faults in the upgraded software can be detected with an accuracy of 99.71% on average. The architecture, which can be easily extended to other reliable upgrade problems, will facilitate a paradigm shift in system evolution from static design and extensive testing to reliable upgrades of critical communication components in networked systems, thus also enabling substantial savings in testing time and resources.

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传感器网络中群通信软件的可靠升级

在无线传感器网络中，节点间的通信至关重要。对通信软件的升级需要可靠地完成，因为新模块中残留的软件错误可能导致整个系统故障。我们提出了一种名为cSimplex的软件架构，它可以可靠地升级传感器网络中基于多播的组通信软件。使用统计检查和我们提出的稳定性定义来检测新模块中的错误。通过切换到经过良好测试的可靠安全模块来完成错误恢复，而不会中断系统的功能。cSimplex已经在一个具有移动机器人作为基站功能的声学传感器网络中实现和演示。实验结果表明，升级后的软件故障检测准确率平均达到99.71%。该体系结构可以很容易地扩展到其他可靠的升级问题，将促进系统进化的范式转变，从静态设计和广泛的测试到网络系统中关键通信组件的可靠升级，从而也可以大量节省测试时间和资源。

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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Proceedings of the First IEEE International Workshop on Sensor Network Protocols and Applications, 2003.

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