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On Delay-Constrained Transmissions of a Finite Number of Short-Length Packets

机译:关于有限数量短长包的延迟约束传输

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摘要

In industrial Internet-of-Things (IoT) applications including smart factories, railway/aircraft operating and control systems, and so on, it is expected to deliver a bundle of packets with a delay constraint. In this paper, we study delay-constrained transmissions where a user or device is to send a bundle of short-length packets within a certain time limit through radio resource blocks shared with others. We first derive a closed-form expression for (a tight upper-bound on) the probability of decoding error when a short-length packet is transmitted through multiple channels (for a high diversity gain under fading). Using the expression, we then study the performance in terms of delivery delay for a bundle of packets using the notion of queuing systems. It is shown that the derived expressions agree with simulation results, which demonstrates that those can be used to design delay-constrained transmission systems to support industrial IoT applications where a bundle of packets has to be delivered within a certain short time limit with high reliability.
机译:在工业互联网上(IOT)应用程序(IOT)应用包括智能工厂,铁路/飞机运行和控制系统,等等,预计将提供一捆延迟约束的数据包。在本文中,我们研究了延迟约束的传输,其中用户或设备是通过与他人共享的无线电资源块在特定时间限制内发送一束短宽分组。我们首先推导出闭合形式的表达式(紧密上限),当通过多个通道发送短长度分组时解码误差的概率(用于衰落下的高分集增益)。使用表达式,我们在使用排队系统的概念的一束数据包的交付延迟方面研究性能。结果表明,衍生的表达式与模拟结果一致,这表明这些可以用于设计延迟约束的传输系统,以支持具有高可靠性的一定短的时间限制内必须在特定短时间内传送的工业物联网应用。

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