User-Centric Quality of Service in Next Generation SD-WAN

下一代 SD-WAN 以用户为中心的服务质量

• 批准号: RGPIN-2019-04408
• 负责人: ShahHeydari, Shahram
• 金额: $ 1.68万
• 依托单位: University of Ontario Institute of Technology
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=714314
• 关键词: User; Centric; Quality; Service; Next

The emergence of Intent-based Networking (IBN) in Software-Defined Networks has promised the realization of "programmable" networks in which the network administrators are able to deploy new services and network functions through abstract commands (e.g. "Configure protocol xx") or high-level scripting languages, and a network orchestration layer would translate such intents into device-level actions. However so far this new degree of flexibility has been limited to basic network protocol and management configuration. The next generation Software-Defined Wide-Area networks (SD-WAN) is expected to take this flexibility to a whole new paradigm, where specific network services are defined with specific end-user quality expectation (performance, reliability, security etc), e.g. "Deploy a video stream for N customers in Australia with Excellent quality", in which the excellence is defined through key performance indicators as well as user satisfaction ratios. The Intent-based SD-WAN not only configures and deploys these services, but also monitors the quality requirements, and dynamically and proactively adjusts network resources to maintain the quality level. The objective of this research program is to focus particularly on challenges regarding the definition and maintenance of Quality of Experience (QoE) for SDWAN services, and to design solutions to address these challenges. The design of QoE-aware SDWAN service will include three dimensions: The network, the administrator, and the user Experience. Challenges to address include: dynamic resource allocation, transport across heterogeneous (and possibly virtualized or cloud-based) network infrastructures, service reliability, translation of service-level intents into the set of network parameters that could potentially affect quality of service, and new and more complex service-level agreements, among others. In order to facilitate service introduction or change to existing services, an intent-based orchestration layer must be designed and mapped to network parameters. This abstraction layer must integrate routing and security policies and automate the creation and installation of network services. Also from a user perspective, user feedback mechanisms must be integrated into this layer to allow real-time quality measurements for adjustment of network service paths in case the quality of experience deteriorate. This research program will attempt to investigate and address the above issues as related to the design of next generation network services, architectures and protocols. It will also contribute to the training of the next generation of researchers in the field of communication and networking in Canada, which remains particularly in demand for decades; and providing them with the skill set that is most relevant to this field in both academic and industrial research.

软件定义网络中基于意图的网络（IBN）的出现已经承诺实现“可编程”网络，其中网络管理员能够通过抽象命令（例如“配置协议xx”）或高级脚本语言来部署新的服务和网络功能，并且网络编排层将这些意图转换为设备级动作。然而，到目前为止，这种新的灵活性仅限于基本的网络协议和管理配置。下一代软件定义广域网（SD-WAN）有望将这种灵活性带到一个全新的范式，其中特定的网络服务定义为特定的最终用户质量期望（性能、可靠性、安全性等），例如“为澳大利亚的N个客户部署一个视频流，质量非常好”，其中，卓越是通过主要业绩指标以及用户满意率来定义的。基于Intent的SD-WAN不仅配置和部署这些服务，还监控质量要求，并动态主动地调整网络资源以保持质量水平。该研究计划的目标是特别关注SDWAN服务的体验质量（QoE）定义和维护方面的挑战，并设计解决方案来应对这些挑战。QoE感知的SDWAN服务的设计将包括三个维度：网络、管理员和用户体验。需要应对的挑战包括：动态资源分配、跨异构（并且可能是虚拟化的或基于云的）网络基础设施的传输、服务可靠性、将服务级意图转换成可能潜在地影响服务质量的网络参数集合、以及新的和更复杂的服务级协议等。为了促进服务引入或对现有服务的更改，必须设计基于意图的编排层并将其映射到网络参数。这个抽象层必须集成路由和安全策略，并自动创建和安装网络服务。此外，从用户的角度来看，用户反馈机制必须集成到该层中，以允许实时质量测量，以便在体验质量恶化的情况下调整网络服务路径。本研究计划将试图调查和解决上述问题，与下一代网络服务，架构和协议的设计。它还将有助于培训加拿大通信和网络领域的下一代研究人员，这一领域几十年来仍然特别需要;并为他们提供与学术和工业研究领域最相关的技能。