Abstract

Software-defined networking (SDN) allows for the decoupling of the control and data planes, enabling more programmability and a global view of the network. Previous research indicates that traditional applications recreated using SDN principles allow for more granularity and customization. In this research, we extend the insights behind SDN to develop a Voice over Internet Protocol (VoIP) framework with the objective to enhance traditional Session Initiation Protocol (SIP) operation and quality of service (QoS) approaches. The contributions of this research are 2-fold: first, an SIP control application is implemented, which communicates with an SDN controller to provide VoIP call registration and call routing capabilities, thereby eliminating the need for specialized SIP proxy hardware devices; second, a dynamic QoS application is developed that provides the ability to make network-wide QoS decisions based on real-time network measurements of latency, bandwidth and packet loss. Functional validation of the framework is performed to verify its operation. The experiment results indicate that the proposed framework allows for enhancements to traditional QoS implementations.

中文翻译：

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SDVoIP-用于SIP和动态QoS的软件定义VoIP框架

摘要

软件定义的网络（SDN）允许控制平面和数据平面的分离，从而实现更高的可编程性和网络的全局视图。先前的研究表明，使用SDN原理重新创建的传统应用程序可以实现更大的粒度和自定义。在这项研究中，我们扩展了SDN的见解，以开发Internet语音协议（VoIP）框架，以增强传统的会话初始协议（SIP）操作和服务质量（QoS）方法。该研究的贡献有两个方面：首先，实现了一个SIP控制应用程序，该应用程序与SDN控制器进行通信以提供VoIP呼叫注册和呼叫路由功能，从而消除了对专用SIP代理硬件设备的需求。第二，开发了一种动态QoS应用程序，该应用程序提供了基于对延迟，带宽和数据包丢失进行实时网络测量而做出网络范围QoS决策的能力。执行框架的功能验证以验证其操作。实验结果表明，提出的框架可以增强传统QoS的实现。