Software Defined Cellular Wireless Networking

软件定义的蜂窝无线网络 软件定义网络(SDN)是一项新的技术进步，旨在将控制平面与转发分组的数据平面物理分离，以提高网络的可编程性、可扩展性和性能，以及系统的管理简易性。为了更好地支持移动蜂窝系统中产生和传输的数据量的快速增长，有必要采用SDN，它带来了网络管理和控制的逻辑集中的概念。用户的需求也从基本的语音和短信服务转变为高质量的音视频流。物联网的发展预计也会增加蜂窝系统的压力。采用建议的SDN架构不仅可以增加吞吐量，还可以减少系统中的延迟。 该研究项目考察了SDN在应用于蜂窝系统时引入的体系结构改进的影响，并探索了这一开发的可靠性和安全性。当前蜂窝模型中的主要组件，如分组数据网络网关(P-GW)，过于专业和昂贵，没有提供多少增加新业务的空间。拟议的蜂窝SDN提供了很大的灵活性，因为可以部署应用编程接口，以更快和更低的成本添加新服务。通用SDN架构在蜂窝系统中不能实现，因为在P-GW中数据和控制平面之间没有明确的分离。SDN体系结构由三个基本层组成：包含网元数据面的基础设施层、控制层和应用层。OpenFlow是用于控制平面和数据平面之间通信的最常用协议。 我们的研究将仔细研究通用的SDN模型，目的是开发该框架，使其在移动蜂窝系统中更加具体和可实现。我们正在考虑SDN控制器的不同部署模型及其对终端节点体验的服务质量的影响。系统的可靠性和安全性是系统的关键方面，但没有得到太多的关注。本研究将分析SDN引入的逻辑集中化和可编程性的安全含义。 几位专家将在这项研究计划中接受培训，该计划将成为加拿大工业中蜂窝SDN的领导者。这项研究的结果将是提高系统的可扩展性、性能和易管理性以及消除与当今蜂窝系统相关的供应商锁定的重要工具。系统开发人员和行业运营商将利用研究结果来提高其系统的响应能力。加拿大运营商将从蜂窝SDN提供的可扩展性、改进的性能和易于管理中受益。

Software Defined Cellular Wireless Networking Software Defined Networking (SDN) is a new technology advancement aimed at physically separating the control plane from the data plane which forwards packets, in order to improve programmability, scalability and performance of the network, as well as ease of management of the system. It has become necessary to adopt SDN which brings about the concept of logical centralization of network management and control in order to better support rapid growth in volume of data generated and transmitted in mobile cellular system. The needs of users has also changed from basic voice and short message services to high quality audio and video streaming. Evolution of Internet of Things is expected to increase the strain on the cellular systems as well. Adoption of proposed SDN architecture will not only increase throughput but also reduce latency in the system. This research program examines the effect of advancement in architecture introduced by SDN as it applies to cellular systems, and explores the reliability and security of this development. Major components in the current cellular model such as the packet data network gateway (P-GW) are too specialized and expensive, and offer little room for addition of new services. Proposed cellular SDN offers a lot of flexibility as application programming interfaces can be deployed to add new services quicker and at much lower cost. The generic SDN architecture is not implementable in cellular systems as there is no clear separation between data and control planes in P-GW. SDN architecture consists of three basic layers: the infrastructure layer which encompasses the data planes of network elements, the control layer and the application layer. OpenFlow is the most popular protocol used for communication between the control and data planes. Our research will scrutinize the generic SDN model with aim of developing the framework to make it more specific and implementable in mobile cellular systems. We are considering different deployment models for the SDN controller and their effects on the quality of service experienced at the end nodes. Reliability and security of the system are key aspects of the system but it has not received much attention. This research will analyze the security implications of logical centralization and programmability introduced by SDN. Several experts will be trained in this research program which will become cellular SDN leaders in Canadian industry. The results of this research will be an important tool in improving scalability, performance and ease of management of the system, as well as eliminating vendor lock-in associated with today's cellular systems. System developers and industry operators will leverage on the outcome of the research to improve responsiveness of their systems. Canadian operators will benefit from scalability, improved performance and ease of management offered by cellular SDN.