Scalable voice over internet protocol service-level agreement guarantees in converged transmission control protocol/ internet protocol networks
Scalable voice over internet protocol service-level agreement guarantees in converged transmission control protocol/ internet protocol networks
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DOI：
10.1049/iet-com.2009.0491
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发表时间：
2010-05
期刊：
影响因子：
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通讯作者：
Qiang Yang;J. Pitts
中科院分区：
文献类型：
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作者：
Qiang Yang;J. Pitts
最近在分组交换网络中引入的服务质量（QoS）供应工具的复杂性日益增加，这成为互联网服务提供商实际部署和管理这些机制以保证一系列透明的实时服务水平协议的主要障碍。作者重新审视了现有的互联网协议（IP） QoS方法，并提出了一种经济有效的解决方案，通过将开放最短路径优先流量工程与标准主动队列管理随机早期检测机制配置的新见解相结合，在融合IP网络中提供互联网协议语音（VoIP）服务保障。本文进行了广泛的仿真研究，并使用国际电信联盟e -模型对代表不同类型网络不确定性的一系列场景明确量化了服务质量。VoIP服务质量的直接表示很好地表明，这种简单、协调的方法与互联网范例保持一致，可以在给定的质量水平下实现更高的负载，并在网络退化条件下实现更大的弹性。
Increasing complexity of the recent introduced quality of service (QoS) provisioning tools in packet-switched networks becomes a major obstacle for Internet service providers to practically deploy and manage these mechanisms to guarantee a range of transparent real-time service-level agreements. The authors revisit the existing Internet protocol (IP) QoS approaches and present a cost-effective solution to provide voice over Internet protocol (VoIP) service guarantees in converged IP networks by combining open shortest-path first traffic engineering with new insights for the configuration of standard active queue management random early detection mechanism. Extensive simulation studies are carried out, and the service quality is explicitly quantified using international telecommunication union E-model for a range of scenarios representing different types of network uncertainties. The direct representation of VoIP service quality well demonstrate that such a simple, coordinated approach, in keeping with the Internet paradigm, can achieve increased load for a given quality level and greater resilience under degraded network conditions.