J4 ›› 2014, Vol. 41 ›› Issue (6): 137-141.doi: 10.3969/j.issn.1001-2400.2014.06.023

• 研究论文 • 上一篇    下一篇

一种基于滑动窗口的混合交换网络时隙分配方法

崔竞飞1,2,3;杨昆4;王劲林1;鲍民权4
  

  1. (1. 中国科学院声学研究所 国家网络新媒体工程技术研究中心,北京  100190;
    2. 中国科学院大学, 北京  100049;
    3. 国家广播电影电视总局 广播科学研究院, 北京  100866;
    4. 西安电子科技大学 综合业务网理论及关键技术国家重点实验室,陕西 西安  710071)
  • 收稿日期:2013-07-19 出版日期:2014-12-20 发布日期:2015-01-19
  • 通讯作者: 崔竞飞
  • 作者简介:崔竞飞(1973-),男,教授级高工, E-mail: cuijingfei@abs.ac.cn.
  • 基金资助:

    国家科技支撑计划资助项目(2012BAH02B01,2012BAH02B02);中国科学院重点部署项目资助(KGZD-EW-103-4,KGZD-EW-103-2);国家863计划资助项目(2011AA01A106)

Time slot allocation method based on the sliding window for hybrid switching networks

CUI Jingfei1,2,3;YANG Kun4;WANG Jinlin1;BAO Minquan4   

  1. (1. National Network New Media Engineering Research Center, Institute of Acoustics, Chinese Academy of Sciences, Beijing  100190, China;
    2. University of Chinese Academy of Sciences, Beijing  100049, China;
    3. Academy of Broadcast Science, SARFT, Beijing   100866, China;
    4. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China)
  • Received:2013-07-19 Online:2014-12-20 Published:2015-01-19
  • Contact: CUI Jingfei

摘要:

针对混合交换网络中恒定比特率业务对传输时延要求较高的问题,提出了一种基于滑动窗口的时隙分配方法,通过确定分组在交换网络中的转发时隙位置来决定分组的传输时延.该方法严格约束了输入输出时隙的绝对间隔在一个较小的范围内,保证分组传输时延较小.仿真结果表明,与随机分配法对时隙在整个复帧周期内任意分配相比,采用基于滑窗的分配法能更有效降低传输时延,减小交换缓存容量.

关键词: 混合交换网络, 滑动窗口, 时隙分配, 时延

Abstract:

For solving the problem that the CBR services have a large transmission delay through the hybrid switching networks, a sliding window-based time slot allocation method is proposed, which can decide the packet transmission delay by determining the CBR packets' slot position in the switching network. This method strictly constraints the absolute interval in a smaller range between the input and output time slots to ensure the packets' smaller transmission delay. Simulation results show that compared with the random allocation method, the sliding window-based allocation method can reduce the transmission delay effectively and the switching cache capacity.

Key words: hybrid switching network, sliding window, time slot allocation, delay