考虑了卫星Internet拓扑变化的可预测性和组播应用的服务质量QoS(quality of service)需求,设计了一种QoS组播路由机制.给出了卫星Internet中QoS组播路由问题模型及其数学描述,引入拉格朗日松弛,设定适应度函数,使用PRIM算法,基于次梯度优化,寻找生存周期最大化的QoS组播路由树.基于NS2进行了仿真实现和性能评价.仿真结果表明,同传统的组播路由机制相比,该机制是可行和有效的,提高了QoS组播路由树生存周期,具有良好的性能.
在NGI主干网主要形式IP/DWDM光Internet中,如何提高其容错能力同时改善其QoS(quality of service)组播性能是需要解决的主要问题,容错QoS组播路由是行之有效的解决方法之一.采用预防式容错策略和双树保护模式,基于蚁群算法,设计了一种容错QoS组播路由模式.以最小化光树故障率为目标,通过建立满足QoS约束的主光树和备份光树来达到容错目的.仿真研究表明,该模式是可行和有效的,具有较好的性能.
With the development of the high-frequency and large-scale commodity,fourth party logistics (4PL) has been att...
Yan Cui~(1,2),Min Huang~(1,2),Xingwei Wang~1 1.College of Information Science and Engineering,Northeastern University.Shenyang,Liaoning,110004,China 2.Key Laboratory of Integrated Automation of Process Industry(Mortheastern University),Ministry of Education,Shenyang, Liaoning,110004,China
From the beginning of the 21century, fourth party logistics（4PL）has been attracting more and more attention in...
Yan Cui~(1,2)Min Huang~(1,2)Xingwei Wang~1 1.College of Information Science and Engineering,Northeastern University,Shenyang,Liaoning,110004,China 2.Key Laboratory of Integrated Automation of Process Industry(Northeastern University),Ministry of Education, Shenyang,Liaoning,110004,China
