北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (4): 69-73.doi: 10.13190/jbupt.201004.69.liuhp

• 论文 • 上一篇    下一篇

中媒体流量的分布式优化机制

刘海鹏1,朱晓民2,廖建新2   

  1. 1. 北京邮电大学网络与交换技术国家重点实验室
    2. 北京邮电大学
  • 收稿日期:2009-10-10 修回日期:2009-11-06 出版日期:2010-08-28 发布日期:2010-05-21
  • 通讯作者: 廖建新 E-mail:liaojianxin@ebupt.com
  • 基金资助:

    部级.高等学校博士学科点专项科研基金项目;部级.教育部博士学科点专项科研基金项目;部级.教育部高等学校博士点基金项目;国家级.国家重点基础研究发展计划项目;国家级.国家自然科学基金重大研究计划项目

Distributed Media Traffic Optimization Mechanism in PoC

  • Received:2009-10-10 Revised:2009-11-06 Online:2010-08-28 Published:2010-05-21

摘要:

为了对IP多媒体子系统平台的push to talk over cellular (PoC)4接口realtime transport protocol媒体流量进行优化,对open mobile alliance提出的媒体流传输机制及其优化机制进行了分析,并提出了改进的优化机制. 新机制通过增强participating server侧控制功能并引入松耦合及分布式控制的思想,减少了PoC4接口的数据流量,降低了数据在发送队列中的平均等待时延,节省了网络带宽. 仿真结果表明,改进的优化机制较原优化机制具有更好的优化效果.

关键词: IP多媒体子系统, push to talk over cellular, 媒体流量优化, 分布式控制, 松耦合

Abstract:

In order to optimize media traffic through push to talk over cellular (PoC)4 i nterface in Internet protocol (IP) multimedia subsystem, an improved optimizati on mechanism is presented by taking loosecoupling and distributedcontrolling ideas into consideration. Under the new mechanism, the media traffic through Po C4 interface can be reduced greatly, and the network bandwidth can be saved mu ch and waiting delay of realtime transport protocol packages in PoC serv er can also be shortened obviously. Analysis and simulation show that the new me chanism performs more effectively than do the original transmitting mechanism an d the media traffic optimization mechanism proposed by open mobile alliance.

Key words: Internet protocol multimedia subsystem, push to talk over cellular, media traffic optimization, distributed controlling, loose coupling