摘要
传统的全局QoS路由需要获知精确的全局网络QoS状态.由于不可忽略的传播延时和处理开销,节点所获得的QoS信息总是不精确的.当节点只了解部分的网络状态信息时,通过引入多类别业务流的虚带宽模型,本文提出了一种多类别业务流的局部化QoS路由算法.仿真结果验证了算法的有效性.
Traditional global QoS routing algorithms require precise global network QoS states. Due to non-negligible propagation delay and dynamic processing overhead, it is difficult for nodes to maintain the precise global QoS information. A new kind of localized QoS routing algorithms for multi-class traffic flows is proposed in this paper, based on the virtual bandwidth model for multi-class traffic flows under the situation that nodes only know partial state information of the network. Simulation results demonstrate that our algorithms can achieve better performances than other ones.
出处
《小型微型计算机系统》
CSCD
北大核心
2005年第6期936-940,共5页
Journal of Chinese Computer Systems
基金
国家"八六三"计划(2001AA121012)资助
广东省计算机网络重点实验室项目(粤教科[2001]27号)资助.
关键词
QOS路由
虚带宽
可选路径
流量阻塞率
QoS routing
virtual bandwidth
candidate path
traffic blocking rate