一种增量部署式的未来互联网QoS保证架构

Incremental deployed architecture for quality of service guarantee of future internet

为解决IP网络难以提供保证网络服务质量的机制这一难题,提出了一种增量部署式的网络服务质量保证体系结构SoIP,该体系结构在现有IP网络之上采用软件定义网络技术构建一层以SDN为基础的覆盖网络,并利用该覆盖网络的集中控制特点增强边缘网络的服务质量保证水平.面向网络应用需求和用户等级提出了以区分服务为基础的资源调控机制,设计了为SoIP实现整个体系架构协同运行的耦合机制,解决了网络可达性和服务质量映射问题.最后通过仿真试验对体系结构的有效性以及可行性进行了验证.

IP network which adopts best effort does not provide quality of service（QoS）guaranteed mechanism,while the increasingly booming multimedia applications in Internet ask for more requirements on QoS.To address this issue,an incremental deployed architecture for network QoS guarantee,namely SoIP,was proposed.In this architecture,software-defined networking（SDN）was constructed over existing IP network,and the level of QoS guarantee could be enforced by the centralized control of this overlay network.A resource scheduling mechanism based on differentiated services was also presented to fulfill the demands of network applications and user priorities.Moreover,the coupling scheme to implement the cooperation of whole architecture was designed in SoIP,which resolved the problem of network accessibility and QoS mapping.Finally,the availability and feasibility of these mechanisms were validated via simulation experiments.