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摘要伴随着移动需求的快速增长,移动无线网络在高速发展的同时,也日益严重地受到无线网络的封闭与僵化特性的制约,这将导致诸如异构无线网络难以融合互通、网络难以提供定制化的服务等问题。为了解决上述问题,该文提出了一种基于虚拟化的软件定义无线接入网结构。首先详细介绍了该结构的整体框架。其次,对其中的关键技术如SDN控制策略、虚拟化策略以及可编程策略等进行了详细设计。该结构实现了无线接入网的灵活可控制、融合可演进、开放可编程以及弹性可定制的特性。
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| 关键词 ：无线接入网,软件定义网络,网络虚拟化,网络结构 |
Abstract：Mobile wireless networks have been rapidly developing with the rapid growth of demand for mobile data. However, the closed and ossified properties increasingly impede progress due to difficulties with convergence among heterogeneous wireless networks and the lack of customized network characteristics for services. A virtualization based software-defined radio access network architecture is given here to address these problems. This paper describes the framework architecture designs of the key systems for the SDN control strategy, virtualization strategies, and programmability strategies. The architecture provides flexible control, convergent evolution, open programmability and resilient customizability of radio access networks.
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| Key words：radio access networksoftware-defined networknetwork virtualizationnetwork architecture |
| 收稿日期: 2013-06-23 出版日期: 2015-04-16 |
| 基金资助:国家“九七三”重点基础研究项目(2013CB329105);国家“八六三” 高技术项目(2013AA010601, 2013AA010605);国家自然科学基金面上项目(61171065);国家自然科学基金重点项目(61133015);国家自然科学基金创新研究群体科学基金(61021001);国家科技重大专项项目(2013ZX03002001);清华—中兴通讯合作项目 |
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