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计算机工程 ›› 2009, Vol. 35 ›› Issue (19): 7-9,12. doi: 10.3969/j.issn.1000-3428.2009.19.003

• 博士论文 • 上一篇    下一篇

实时数据组播调度动态带宽分配方案

孙显军1,2,徐桐发3,刘卫东1,林 闯1   

  1. (1. 清华大学计算机系,北京 100084;2. 总参气象水文空间天气总站,北京 100081;3. 国家海洋环境预报中心,北京 100081)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-10-05 发布日期:2009-10-05

Dynamic Bandwidth Assignment Scheme for Real-time Data Multicast Schedule

SUN Xian-jun1,2, XU Tong-fa3, LIU Wei-dong1, LIN Chuang1   

  1. (1. Department of Computer, Tsinghua University, Beijing 100084; 2. General Staff Meteorology, Hydrology and Space Weather Center, Beijing 100081; 3. National Marine Environment Forecast Center, Beijing 100081)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-10-05 Published:2009-10-05

摘要: 针对多通道组播调度中数据分配不均带来的带宽浪费问题,提出3种动态带宽分配方案。根据数据项平均长度或数量改变分配优先级,对不同方案进行性能分析。实验表明,动态分配比静态分配最多可提高43%的带宽利用率,其中平均数据项长度最短优先分配最好。

关键词: 组播调度, 数据分发, 带宽分配

Abstract: Aiming at the issue of bandwidth wasting due to unbalanced data allocation for multi-channel multicast schedule, this paper proposes three dynamic bandwidth assignment schemes. It changes assignment priority by data items’ average lengths or number of queues, and analyzes their performance. Experiments show that Dynamic Assignment Bandwidth(DAB) can improve utilization rate by 43% at most compared with Static Assignment Bandwidth(SAB), and average-short-first assignment is the best.

Key words: multicast schedule, data dissemination, bandwidth assignment

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