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Time-dependent reliability of wireless networks with dependent failures

机译：具有相关故障的无线网络的时间相关可靠性

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摘要

Because the Internet of Things is embedded in the physical system, the network failure leads to the loss of money or life. The dependent failure or the common cause failure completely destroys the redundancy for improving the reliability, so it severely impacts on the system reliability. Incorporating the common cause failure, we analyze the exact time-dependent all-terminal reliability of the wireless networks with dependent failures, which provides a more realistic assessment of the reliability. We consider both hardware failure and channel fading in the static environment. First, by incorporating the common cause failures into the time dependent reliability polynomials, we derive the exact time-dependent reliability polynomials of the regular wireless networks of which each node connects other nodes via four point-to-point radio modules. Second, we derive the polynomials of the wireless networks including the random mesh network where each node connects other nodes through the redundant radio-broadcast modules. Finally, we calculate the exact instantaneous failure rates. Surprisingly, we have found that the torus network comprised of the node holding four redundant radio-broadcast modules is compatible with the complete network that is known as the most reliable network.
机译：由于物联网已嵌入物理系统中，因此网络故障会导致金钱或生命损失。因果故障或共因故障会完全破坏冗余以提高可靠性，从而严重影响系统可靠性。结合常见原因故障，我们分析了具有相关故障的无线网络的确切时间相关的全终端可靠性，这为可靠性提供了更现实的评估。我们在静态环境中同时考虑了硬件故障和信道衰落。首先，通过将常见原因故障合并到时间相关的可靠性多项式中，我们得出了常规无线网络的确切时间相关的可靠性多项式，其每个节点都通过四个点对点无线电模块连接其他节点。其次，我们推导包括随机网格网络在内的无线网络的多项式，其中每个节点通过冗余无线电广播模块连接其他节点。最后，我们计算出确切的瞬时故障率。令人惊讶地，我们发现由包含四个冗余无线电广播模块的节点组成的环型网络与被称为最可靠网络的完整网络兼容。

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