Dynamic flow control mechanism in large-scale streaming media multicast systems

WANG Hui; SUN Zhi-gang; DAI Bin; HE Jun-feng; GONG Zheng-hu

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Dynamic flow control mechanism in large-scale streaming media multicast systems

更新时间：2024-10-14

- Dynamic flow control mechanism in large-scale streaming media multicast systems
- Vol. 31, Issue 10, Pages: 88-97(2010)
- 作者机构：
  
  国防科学技术大学计算机学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN919.8
- Published：2010
- 稿件说明：
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WANG Hui, SUN Zhi-gang, DAI Bin, et al. Dynamic flow control mechanism in large-scale streaming media multicast systems[J]. 2010, 31(10): 88-97.
DOI：

WANG Hui, SUN Zhi-gang, DAI Bin, et al. Dynamic flow control mechanism in large-scale streaming media multicast systems[J]. 2010, 31(10): 88-97. DOI：

摘要

提出一种边缘到边缘的动态流量控制机制—e2e-DFCM。e2e-DFCM工作原理是:发送端视频网关SVG对携带视频流质量标识QLI的报文聚集并重新进行QoS等级映射

接收端视频网关RVG周期地发送延迟、报文丢失等多播流状态信息;SVG根据QLI和RVG反馈的多播流状态信息对报文进行重新映射和分类

并基于效用动态分配各等级带宽

一旦接收端的服务质量不满足要求(平均延迟、丢失率超出承受范围)

RVG甚至要求降级

SVG将降低发送速率。最后给出的模拟验证了e2e-DFCM机制的有效性。

Abstract

An edge-to-edge dynamic flow control mechanism --e2e-DFCM was proposed.The main idea of e2e-DFCM is as follows:The QoS level of packets which had been labeled with quality level identifier（QLI） was gathered and remapped by sending video gateway（SVG）;Receiving video gateway（RVG） periodically sent multicast flow status information

including delay

loss rate

etc.;SVGs dynamically remapped and classified packets according to QLI and flow status information feedback from RVG

and reassigned each QoS level flow rates based on their utilities.Once the QoS of receivers could not be satisfied（i.e.

average delay and loss rate exceed the tolerable range）

RVG even requested to down-grade its level

and SVG would reduce the sending rate.In the end

simulation results demonstrate e2e-DFCM’s effectiveness.

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