摘要
在研究Internet现有QoS框架结构的基础上,对区分服务模型中缺乏资源协商信令进行改进,提出了基于流标签的移动IPv6 QoS框架,即在区分服务模型中使用IPv6流标签携带QoS参数,并对绑定更新、绑定应答等消息进行修改,通过在移动IPv6 QoS协商过程中指出业务流所需的QoS信息,以达到为业务流提供端到端的QoS的目的。利用仿真工具NS-2对移动IPv6 QoS协商过程进行了模拟,对区分服务和加入资源协商的区分服务进行对比分析。结果表明,新方案在数据丢包和延时方面的性能均有一定提高。
On the basis of present Internet QoS framework structure,the paper remedies the lack of resource consulting signals in DiffServ models and puts forward a flow label based mobile IPv6 QoS framework,i.e.using IPv6 flow labels to carry QoS parameters in DiffServ models and modify such messages as Binding Update,Binding Acknowledge and so on.By indicating the QoS information required by the business flow during mobile IPv6 QoS consulting,it can be achieved to provide end-to-end QoS for business flows.The mobile IPv6 QoS consulting process is simulated by a simulation tool called NS-2 to compare and analyze an ordinary DiffServ and the DiffServ that has joined the resource consultation.The result shows that the new solution performs better at both data packet losses and time delay.
出处
《计算机应用与软件》
CSCD
2011年第7期60-63,107,共5页
Computer Applications and Software
基金
国家高技术研究发展计划重点基金项目(2009AA044601)
