基于OpenFlow的光与无线融合接入网控制架构

Access network control architecture for optical and wireless convergence based on OpenFlow

为了有效提高光接入网网络资源利用率,满足不同用户差异化服务质量(quality of service,QoS)的业务需求,解决不同用户数据流量缺乏动态控制和智能调度的问题,提出一种基于OpenFlow的光与无线融合接入网控制架构。该架构通过部署OpenFlow代理,延伸了控制器的控制深度到光线路终端(optical line terminal,OLT)和光网络单元(optical network unit,ONU),设计了智能化控制权限的动态下放和回收机制,从而实现了功能的整体控制和资源的灵活调度。该控制架构能够以全局视角实时获取网络、用户及业务信息,根据网络状态以及网络资源的情况,动态灵活智能地制定和调整各个交换节点的数据处理规则,实现资源优化配置,可以有效提高网络资源利用率和满足不同用户差异化的业务需求。

In order to effectively improve the utilization of network resources of optical access network, meet different QoS service requirements for different users, and solve the problem of lacking dynamic control and intelligent scheduling of data traffic for different users, we proposed a control architecture for optical and wireless convergence access network based on OpenFlow. This architecture deploys the OpenFlow agent, extends the control depth of the controller to the optical line terminal(OLT) and the optical network unit(ONU), and designs a dynamic decentralization and recovery mechanism for the intelligent control authority, thereby realizing the overall control of the function and the flexible scheduling of resources. The control architecture can get real-time information of network, user and business from a global perspective. According to network status and network resources, the control architecture can formulate and adjust the data processing rules of each switching node dynamically and intelligently, and then realize the optimal allocation of resources. Finally, it can effectively improve the utilization of network resources and meet the different service requirements of different users.