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首页> 外文期刊>Optical Communications and Networking, IEEE/OSA Journal of >Flexible low-latency metro-access converged network architecture based on optical time slice switching
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Flexible low-latency metro-access converged network architecture based on optical time slice switching

机译：基于光时间片交换的灵活的低延迟城域接入融合网络架构

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The "pay-as-you-grow" cloud computing model has become popular for today's enterprises. Cloud computing not only frees end users from complex operations, but also allows higher resource utilization, lower investment, and increased energy efficiency. However, with some emerging technologies, cloud computing is unable to meet the required latency level, especially for delay-sensitive services such as 5G communications, live streaming, and online gaming. In this context, edge computing is regarded as a promising technology that can provide low-latency connections in the near future. Unlike cloud computing, which provides service in a centralized mode, edge computing deploys micro data centers (MDCs) at the edge of the network to provide rapid-response service. However, due to the limited computing and storage capacity of a single MDC, a user may not be able to access the resources from the closest MDC during peak traffic periods. Under such circumstances, the user is served through another MDC or a remote cloud data center. The data are processed in an optical line terminal and then transmitted via the metro network, which significantly increases the latency. In this study, we introduce a flexible low-latency metro-access converged network architecture based on optical time slice switching (OTSS) to address the latency problem. By leveraging the transparent connections of the OTSS in this novel architecture, data can be transmitted through the MDCs without requiring extra processing time. The simulation results demonstrate that our proposed architecture can provide lower-latency connections under a range of conditions, with a negligible decrease in network throughput, compared with an existing representative architecture. Additionally, we conducted experiments to validate the feasibility of our approach. (C) 2019 Optical Society of America
机译：“按需购买，按需购买”云计算模型已在当今企业中流行。云计算不仅使最终用户摆脱了复杂的操作，而且还可以提高资源利用率，降低投资并提高能源效率。但是，对于某些新兴技术，云计算无法满足所需的延迟级别，尤其是对于延迟敏感的服务，例如5G通信，实时流媒体和在线游戏。在这种情况下，边缘计算被认为是可以在不久的将来提供低延迟连接的有前途的技术。与以集中模式提供服务的云计算不同，边缘计算在网络边缘部署微数据中心（MDC）以提供快速响应的服务。但是，由于单个MDC的计算和存储容量有限，因此在高峰流量时段内，用户可能无法从最近的MDC访问资源。在这种情况下，将通过另一个MDC或远程云数据中心为用户提供服务。数据在光线路终端中进行处理，然后通过城域网传输，这大大增加了等待时间。在这项研究中，我们介绍了一种基于光时间片交换（OTSS）的灵活的低延迟城域接入融合网络架构，以解决延迟问题。通过在这种新颖的体系结构中利用OTSS的透明连接，可以通过MDC传输数据，而无需额外的处理时间。仿真结果表明，与现有的代表性体系结构相比，我们提出的体系结构可以在一定范围的条件下提供较低延迟的连接，而网络吞吐量的下降可以忽略不计。此外，我们进行了实验以验证我们方法的可行性。 （C）2019美国眼镜学会

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