摘要
提出了覆盖网络组播的链路压力均衡模型和组播树特征伸长度模型,用以评价覆盖网络组播协议的性能。链路压力均衡模型采用均匀性度量的偏差准则来衡量组播中的压力分布。组播树特征伸长度模型通过寻找路径伸长度密集分布区域来评价组播路径的优化程度。仿真结果表明,这两种模型能够很好地反映覆盖网络组播协议在压力和伸长度方面的性能。
It is presented the stress equilibrium model and the stretch eigen-value model for evaluating the performance of overlay network multicast protocols. The stress equilibrium model uses the discrepancy criteria of uniformity measurement to measure the distribution of stress in multicast trees. By looking for the areas where stretch values are dense, the stretch eigen-value model judges optimization degree of multicast paths. Experiments results based on simulations show that the two models can reflect the performance of stress and stretch well for multicast protocols with overlay network.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
2005年第5期1107-1110,1114,共5页
Journal of System Simulation
基金
国家自然科学基金资助项目(60272012)
关键词
组播
覆盖网络
性能评价
压力
伸长度
multicast
overlay network
performance evaluation
stress
stretch
