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首页> 外文期刊>IEEE transactions on dependable and secure computing >Dependability Integration in Cloud-hosted Telecommunication Services
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Dependability Integration in Cloud-hosted Telecommunication Services

机译：云托管电信服务中的可靠性集成

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摘要

Future networks should be based on Telco clouds to handle the growing traffic. Thanks to Telco Clouds, network functions can be deployed, accessed and run like any information technology application hosted in cloud computing. However, network functions need to fulfill carrier grade characteristics consisting of strict requirements in dependability (e.g., five nines availability, some milliseconds of outage). In traditional telecommunication networks, these features are guaranteed by proprietary hardware that hosts network functions. In Telco cloud context, there is an emergency need to adapt cloud environments in order to guarantee carrier-class behaviour. The aim of this paper is to guarantee dependability in the telecommunication services hosted in cloud environments according to the rates fixed by ETSI for three service availability levels. In this regard, we propose the Dependability Broker Architecture in Telco Clouds; which is a broker architecture based on a Software Defined Network controller that operates on Network Function Virtualization environments. DBA-Telco takes into consideration the different availability levels defined for telecommunication services. It also dimensions the bottlenecks of the virtualized mobile core EPC-IMS based on the expectations of 5G networks. This architecture achieves the carrier grade requirements in the virtualized mobile core network EPC-IMS.
机译：未来的网络应基于电信云，以处理不断增长的流量。得益于Telco Clouds，网络功能可以像云计算中托管的任何信息技术应用程序一样进行部署，访问和运行。但是，网络功能必须满足运营商等级的特性，其中包括严格的可靠性要求（例如，可用性为五分之九，中断时间为几毫秒）。在传统的电信网络中，托管网络功能的专有硬件可以保证这些功能。在电信云环境中，迫切需要调整云环境，以保证运营商级的行为。本文的目的是根据ETSI为三个服务可用性级别确定的费率，确保云环境中托管的电信服务的可靠性。在这方面，我们提出了Telco Clouds中的Dependency Broker体系结构。它是基于在网络功能虚拟化环境上运行的软件定义的网络控制器的代理体系结构。 DBA-Telco考虑了为电信服务定义的不同可用性级别。它还根据5G网络的期望来确定虚拟化移动核心EPC-IMS的瓶颈。该架构在虚拟化的移动核心网EPC-IMS中达到了运营商等级的要求。

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