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arXiv 1806.11285eess.SPcs.NI
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5G系统中无线链路的可用性和可靠性:时空方法

Availability and Reliability of Wireless Links in 5G Systems: A Space-Time Approach

Mustafa Emara, Miltiades C. Filippou, Ingolf Karls

摘要:

无线链路的特征在于波动的质量,导致可变的分组错误率,其数量级高于有线链路的数量级。因此,研究将5G无线链路用于物联网(IoT)应用的局限性至关重要。物联网中的5G无线链路需要通过随时随地的实时通信来确保过程流的确定性,这是汽车、工业自动化和航空航天等多个垂直领域的最高要求。在这项工作中,我们提供了新的定义的无线链路的可用性和可靠性,假设一些接入点(AP)和端点(EP)部署在一个固定的区域。我们的目标是分析这两个域中的服务的可用性。在空间域中,我们表征空间上可用的区域,包括所有的位置,满足性能要求的信心。在时域中,我们提出了一个信道分配方案占一个小区的空间可用性。为了强调所产生的空时性能的权衡,数值结果,也突出了不同的系统参数的影响,可实现的链路的可用性和可靠性。

英文摘要:

Wireless links are characterized by fluctuating quality leading to variable packet error rates which are orders of magnitude higher than the ones of wired links. Therefore, it is of paramount importance to investigate the limitations of using 5G wireless links for internet of things (IoT) applications. 5G wireless links in IoT need to assure determinism of process flows via realtime communication anytime and anywhere, which is an utmost requirement for multiple verticals like automotive, industrial automation and aerospace. Based on a space-time approach, in this work, we provide novel definitions of wireless link availability and reliability, assuming a number of access points (APs) and end points (EPs) deployed over a fixed area. Our objective is to analyze the availability of a service in both domains. In the space domain, we characterize spatially available areas consisting of all locations that meet a performance requirement with confidence. In the time domain, we propose a channel allocation scheme accounting for the spatial availability of a cell. To emphasize the incurred space-time performance trade-offs, numerical results are presented, also highlighting the effect of different system parameters on the achievable link availability and reliability.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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