一种基于层叠网的QoS自适应路由方法  

A Routing Scheme with Adaptive QoS based on Overlay Networks

作　　者：吕保平[1,2] 彭伟[1] 孙力伟[1] 

机构地区：[1]国防科学技术大学计算机学院,湖南长沙410073 [2]武警警种指挥学院,北京102202

出　　处：《微计算机信息》2010年第33期75-77,共3页Control & Automation

基　　金：国家重大基础研究计划973课题"大规模流媒体的高效传输控制"(2009CB320503);863计划"新一代高可信网络"重大项目"开放式构件化通用路由器研制"(2008AA01A325)资助

摘　　要：受限于网络的初始设计原则和网络体系结构,为多媒体应用提供保证服务质量的路由(QoS路由)一直是因特网面临的一个难题。目前,因特网的路由系统支持基于最少跳数或最少费用的路由选择,但很难在网络层扩展支持QoS路由、多路径路由等新型路由机制。层叠网是实现这些新型路由机制的一种可行途径。本文针对为多媒体应用提供最短延时路由服务的问题,提出一种支持QoS自适应路由的层叠网系统ONAQR(Overlay Network for Adaptive QoS Routing)。在此系统框架下,设计实现了一种基于多路径的最短延时路由选择方案,并通过实验验证了本方案的可行性和有效性。Subject to the initial network design principles and network architecture, it is a difficult problem to provide QoS （quality of service） routing functions in the Internet for multimedia applications. Presently,the Internet routing system supports the routing based on the minimal hop or the minimal cost. It is difficult to extend the network layer to support QoS routing, multi-path routing, and other new routing mechanisms. It is a practical approach to implement these new routing mechanisms using overlay networks. In this paper, aiming at providing the shortest-delay routing service for multimedia applications, we propose a QoS-adaptive routing overlay network system called ONAQR （Overlay Network for Adaptive QoS Routing）. Within its framework, a shortest-delay routing scheme is designed and verified through experiments. The experimental results have shown the feasibility and effectiveness of the proposed scheme.

关 键 词：QOS路由 层叠网 自适应 最短延时路由 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]