基于SDN的物联网智能流量管理机制的设计与实现

发布时间：2019-03-16 17:39

【摘要】：软件定义网络(Software Defined Network,简称SDN),是由美国斯坦福大学提出的一种新型网络创新架构。为了实现网络流量的灵活控制,SDN将网络设备的控制平面与数据平面分离,以简化传统网络的配置管理工作。随着物联网技术的不断发展,物联网设备的不断增多导致来自于物联网的流量将大大增加,网络负载均衡、智能网络流量管理将也将面临较大的压力。在未来网络中,基于传统网络的物联网架构难以满足庞大的物联网网络业务发展需求。SDN的集中式控制整合了网络及服务器,在SDN控制器中形成统一的控制视图,提升全网的性能及服务质量。本文的目标是提出一种基于SDN的物联网框架,实现一个物联网网关可以将数据转入到SDN交换机中。基于SDN控制器的北向接口实现应用层的流量管理中心,由流量管理中心实现网络的智能管理,由SDN控制器进行统一的管理和调度。基于SDN的物联网流量智能管理机制包括流量管理中心APP、物联网网关及物联网应用。流量管理中心APP包含四个模块:资源管理中心、流量探测统计中心、选路中心以及流表控制中心,四个模块协同配合完成物联网流量智能管理功能。物联网网关由OVS和6LowPAN边界路由组成,实现SDN网络与物联网边界路由的通信。物联网应用基于CoAP应用层协议实现环境数据的传递。本文搭建了一种基于SDN的物联网系统,并且实现了基于SDN控制器的流量管理应用。本文进行了系统可用性测试及模块测试,测试场景包括系统整体可用性测试、流量管理中心模块功能测试及物联网流量管理功能测试。
[Abstract]:Software defined Network (Software Defined Network,) is a new network innovation architecture proposed by Stanford University. In order to realize the flexible control of network traffic, SDN separates the control plane of network equipment from the data plane to simplify the configuration management of traditional network. With the continuous development of Internet of things (IoT) technology and the increasing number of IoT devices, the traffic from IOT will increase greatly. The load balancing of network will lead to the pressure of intelligent network traffic management. In the future network, the Internet of things architecture based on traditional network is difficult to meet the huge needs of Internet of things network business development. The centralized control of SDNs integrates the network and server, and forms a unified control view in the SDN controller. Improve the network performance and quality of service. The goal of this paper is to propose an Internet of things framework based on SDN. An Internet of things gateway can transfer data to the SDN switch. Based on the northbound interface of SDN controller, the traffic management center of the application layer is realized. The intelligent management of the network is realized by the traffic management center, and the unified management and scheduling of the network is carried out by the SDN controller. The intelligent traffic management mechanism of Internet of things based on SDN includes APP, gateway of Internet of things and application of Internet of things. The flow management center APP consists of four modules: resource management center, traffic detection and statistics center, routing center and flow meter control center. The four modules cooperate to complete the intelligent traffic management function of the Internet of things. The gateway of Internet of things is composed of OVS and 6LowPAN boundary routing, which realizes the communication between SDN network and IoT border routing. Internet of things application based on CoAP application layer protocol to achieve the transfer of environmental data. In this paper, a kind of Internet of things system based on SDN is built, and the application of flow management based on SDN controller is realized. In this paper, the system usability test and module test are carried out. The test scenario includes the whole system usability test, the traffic management center module function test and the Internet of things traffic management function test.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP393.02;TP391.44;TN929.5

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