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计算机工程 ›› 2007, Vol. 33 ›› Issue (13): 213-215. doi: 10.3969/j.issn.1000-3428.2007.13.073

• 多媒体技术及应用 • 上一篇    下一篇

3G网络中流媒体缓存系统的设计与实现

杨 波1,廖建新1,吕新荣1,王 纯1,张天乐2   

  1. (1. 北京邮电大学网络与交换技术国家重点实验室,北京 100876;2. 中国科学院计算技术研究所,北京 100080)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-07-05 发布日期:2007-07-05

Design and Implementation of Streaming Media Cache System in 3G Network

YANG Bo1, LIAO Jianxin1, LV Xinrong1, WANG Chun1, ZHANG Tianle2   

  1. (1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876; 2. Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-07-05 Published:2007-07-05

摘要: 针对移动流媒体系统中无线接入网带宽窄、终端缓存空间小的特点,提出了一种适用于3G WCDMA网络的流媒体缓存体系结构WSCA,设计了基于缓存的移动流媒体调度策略WSCS,探讨了WSCA系统在实现中的技术细节。分析表明,WSCA体系与WSCS调度策略结合,能有效提高用户服务质量,降低核心网络带宽消耗,对3G流媒体应用具有一定的参考价值。

关键词: 移动流媒体系统, 两级缓存, 调度策略

Abstract: According to the characters of mobile streaming system such as low bandwidth in wireless access network and small memory size in mobile handset, a novel caching system architecture WSCA for 3G WCDMA network is proposed. A cache-based mobile streaming schedule policy named WSCS is designed, and technique details are discussed. Analysis shows, combining with WSCS streaming schedule policy, WSCA architecture can effectively decrease the core network transmission cost and improve the quality of services, and it is valuable for 3G streaming service application system.

Key words: mobile streaming media system, two-level cache, schedule policy

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