一种无连接QoS路由机制  

A connectionless QoS routing mechanism

作　　者：陶永臻[1] 王兴伟[1] 尹飞[1] 黄敏[1] 

机构地区：[1]东北大学信息科学与工程学院,沈阳110819

出　　处：《东南大学学报（自然科学版）》2012年第A02期225-232,共8页Journal of Southeast University：Natural Science Edition

基　　金：国家杰出青年科学基金资助项目(61225012);国家自然科学基金资助项目(61070162;71071028;70931001);高等学校博士学科点专项科研基金优先发展领域资助项目(20120042130003);高等学校博士学科点专项科研基金资助项目(20100042110025;20110042110024);工信部物联网发展专项资金资助项目;中央高校基本科研业务费专项资金资助项目(N110204003)

摘　　要：为使下一代互联网NGI(next generation Internet)获得服务质量QoS(quality of service)路由能力,提出了无连接QoS路由机制,该机制包括接纳控制、扩展的域内和域间协议.设计探测报文和反馈报文完成接纳控制,引入基于历史信息统计预测机制和网络拥塞状态感知机制来提高接纳控制准确率.扩展OSPFv3(Open Shortest Path First Version 3)协议,对QoS信息进行获取、扩散、存储和更新,提出了基于加权拟合度量值的扩展Dijkstra算法.扩展BGP4+(BorderGatew ay Protocol 4+)协议,为路径增加QoS属性,改进路由决策过程.测试结果表明,无连接QoS路由机制具有实用性、有效性以及良好的可扩展性.In order to provide quality of service （QoS） routing for the next generation Internet （NGI）, a connectionless QoS routing mechanism is proposed, which includes admission control, extended intra-domain and inter-domain protocols. Probe packets and feedback packets are devised to accomplish admission control. A historical information statistics-based prediction scheme and a net- work congestion state perception scheme are introduced to improve admission control correctness and accuracy. By extending the open shortest path first version 3 （OSPFv3） protocol, QoS information is acquired, spread, stored and updated. And an extended Dijkstra algorithm based on the weighted fitting metric is proposed. By extending BGP4 ＋ （ Border Gateway Protocol 4 ＋ ）, the QoS property is added for path, and the routing decision process is modified. Experimental results show that the proposed connectionless QoS routing mechanism is practical and effective with better extendibility.

关 键 词：服务质量 无连接 接纳控制 路由协议 OSPFV3 BGP4+ 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]