北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2014, Vol. 37 ›› Issue (5): 91-95.doi: 10.13190/j.jbupt.2014.05.019

• 研究报告 • 上一篇    下一篇

一种支持小扇出多播业务均衡的信元排队策略

高雅1, 邱智亮2, 张健2   

  1. 1. 无锡职业技术学院 物联网技术学院, 江苏 无锡 214121;
    2. 西安电子科技大学 综合业务网理论与关键技术国家重点实验室, 西安 710071
  • 收稿日期:2013-11-24 出版日期:2014-10-28 发布日期:2014-11-07
  • 作者简介:高 雅(1987- ), 女, 博士生, E-mail: gaoya@wxit.edu.cn;邱智亮(1965- ), 男, 教授, 博士生导师.
  • 基金资助:

    国家高技术研究发展计划项目(2011AA01A106);国家科技支撑计划项目(2012BAH02B02)

A Cell Assignment Algorithm for Balancing Multicast Traffic with Small Fanout

GAO Ya1, QIU Zhi-liang2, ZHANG Jian2   

  1. 1. School of IOT Technology, Wuxi Institute of Technology, Jiangsu Wuxi 214121, China;
    2. State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an 710071, China
  • Received:2013-11-24 Online:2014-10-28 Published:2014-11-07

摘要:

当多播业务扇出数较小时,现有的多播信元入队策略均衡能力差,造成多播队列数目增加却不能使调度算法从中获利的现象,为此提出了一种加权取模的多播信元入队算法,对扇出位的加权和进行取模运算. 以此作为多播信元入队的依据,可更好地均衡小扇出数的多播信元. 仿真结果表明,小扇出多播业务下,调度算法采用加权取模入队策略时的吞吐率要高于采用传统入队策略时的吞吐率.

关键词: 多播扇出, 入队策略, 调度算法, 流量均衡

Abstract:

When the fanout number of multicast cells is relatively small, the existing cell assignment scheme has poor performances under balancing traffic load. The scheduling algorithm can almost not benefit from the increase of multicast queues. A weighted modulo (WM) algorithm for multicast cell assignment was presented, which can ensure more scheduling opportunities and work conservation. The proposed scheme performs modulo operation on the weighted sums of the fanout bits to get the mapped queue number, thus the multicast cells with small fanout numbers can be balanced very well. Simulations show that multicast scheduling algorithm adopting the proposed scheme has higher throughput than that adopting the Modulo algorithm.

Key words: multicast fanout, cell assignment, scheduling algorithm, load balancing

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