摘要
分析了分布式多媒体通信中同步的基本问题，讨论了多媒体同步的研究进展，提出了一种基于权的同步Ｐｅｔｒｉ网规范，并介绍了分布式多媒体通信中的同步策略．
A queueing model for variable bit rate superposed voice flows is proposed and a distribution function of the superposed flows is derived by queueing theory method. The result shows that interarrival time between two talkspurts of the superposed voice flows has a hyper exponential distribution. Moreover, the characteristics of the superposed voice flows is analyzed and the result shows that the difference between mean value and mean square value of the superposed voice flows is very small when the intensity of input traffic is quite great (not less than 47 Erlang). It means that the superposed voice flows can be approximately substituted by Poisson Flows with the same intensity.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
1997年第3期24-29,共6页
Journal of Beijing University of Posts and Telecommunications
基金
国家教委博士点基金
关键词
数据通信
多媒体通信
同步规范
traffic theory
variable bit rate
superposed flows
distribution function
