软件定义内容网络中的联合拥塞控制策略  

Joint Congestion Control Strategy in Software Defined Content Network

作　　者：张云灿[1] 王雷[1] 刘静[1] 王嵩[1] 

机构地区：[1]中国科学技术大学自动化系,合肥230027

出　　处：《计算机工程》2016年第9期71-75,82,共6页Computer Engineering

基　　金：中央高校基本科研业务费专项基金资助项目(WK2100100022);中国科学院战略性先导科技专项基金资助项目(XDA06011203)

摘　　要：内容中心网络(CCN)从网络体系结构角度解决内容获取与分发问题,但网络资源的有限性和流量的突发性导致网络拥塞不可避免。当前主流的CCN实现仍需依赖IP路由,这样拥塞控制方案只能叠加在IP拥塞控制之上,无法体现研究价值。考虑到协议无感知转发(POF)协议是对Open Flow协议的扩展,支持任意格式的转发数据包,基于POF环境实现不依赖于IP路由的CCN原型——软件定义内容网络(SDCN),并以此为基础提出一种联合拥塞控制策略。实验结果证明该策略可以有效实现软件定义内容网络的拥塞控制。Content-centric Network （CCN） provides a solution to solve the problem of content acquisition and distribution in the view of network architecture. The finiteness of network resource and unexpectedness of network traffic result in network congestion inevitably. The mainstream implementation of CCN still relies on IP routing, so the study of congestion control scheme in CCN now cannot reflect the value of the research which can only superimpose over the congestion control scheme of IP. Protocol-oblivious Forwarding（POF） is an extension of the OpenFlow protocol, which can support to forward packets in any format. In view of this feature, this paper realizes a prototype of CCN based on POF, named Software Defined Content Network（SDCN）. Then a joint congestion control strategy is proposed in SDCN. Experimental results show that this strategy can effectively control congestion in SDCN.

关 键 词：内容中心网络 协议无感知转发 软件定义网络 拥塞控制 软件定义内容网络 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]