The future integration of software-defined network (SDN) with the service-oriented architecture (SOA) paradigm requires new solutions to ensure the quality of service (QoS) according to the users' requirements. The paper presents a user experience-centric approach to traffic engineering and QoS/quality of experience (QoE) support for service-oriented software-defined network (SOSDN) architecture. This approach is to enable end-to-end QoS across the networking and computing domain by monitoring and agreeing on the dynamic state of their functioning. The proposed SOSDN is based on improved traffic engineering techniques, such as adaptive prioritization of services, server selection, and QoS/QoE-based routing. The developed adaptive service prioritization algorithm automatically changes the priority of flows in the network operation mode by the SDN controller for individual users under the concluded service level agreements (SLA) contract. We proposed a mathematical model of correlation of user satisfaction level by QoE score with technical QoS parameters. This model is based on the normalized value of the integral additive QoS criterion. Accordingly, ensuring the ordered user-centric QoS/QoE is carried out by means of proposed multi-criteria adaptive routing of data flows, the metric of which is based on the integral additive QoS criterion. The simulation results showed that, in contrast to known practical solutions, the integrated use of the proposed method of adaptive multi-criteria routing and prioritization of data flows provides a high level of QoE required by users in the SOSDN paradigm.

中文翻译：

---

新兴面向服务的软件定义网络的流量工程和QoS/QoE支持技术

软件定义网络（SDN）与面向服务的架构（SOA）范式的未来集成需要新的解决方案来根据用户的需求确保服务质量（QoS）。本文提出了一种以用户体验为中心的流量工程方法以及面向服务的软件定义网络 (SOSDN) 架构的 QoS/体验质量 (QoE) 支持。这种方法是通过监控和商定其功能的动态状态来实现跨网络和计算域的端到端 QoS。所提出的 SOSDN 基于改进的流量工程技术，例如服务的自适应优先级、服务器选择和基于 QoS/QoE 的路由。所开发的自适应服务优先级算法通过SDN控制器根据签订的服务水平协议（SLA）合同自动改变网络操作模式中的流的优先级。我们提出了一种通过 QoE 评分来衡量用户满意度与技术 QoS 参数相关性的数学模型。该模型基于积分加性 QoS 标准的归一化值。因此，通过提出的多标准自适应数据流路由来确保有序的以用户为中心的 QoS/QoE，其度量基于整体附加 QoS 标准。仿真结果表明，与已知的实际解决方案相比，所提出的自适应多标准路由和数据流优先级的方法的综合使用提供了SOSDN范式中用户所需的高水平的QoE。