Performance Evaluation for Early Packet Discard in ATM Switch

Wu Dapeng; Qian Zongjue; Yang Jihui; Hu Yihong

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Performance Evaluation for Early Packet Discard in ATM Switch

更新时间：2025-12-08

- Performance Evaluation for Early Packet Discard in ATM Switch
- Acta Electronica Sinica Issue 7, (1999)
- 作者机构：
  
  1. 北京邮电大学
  2. 北京高鸿通信技术有限公司
  3. 北京邮电大学北京高鸿通信技术有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN913.21
- Published：1999
- 稿件说明：
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[1]吴大鹏,钱宗珏,杨积慧,胡怡红.ATM交换机EPD性能分析[J].电子学报,1999(07):19-23.

Wu Dapeng, Qian Zongjue, Yang Jihui, et al. Performance Evaluation for Early Packet Discard in ATM Switch[J]. Acta Electronica Sinica, 1999, (7).
[1]吴大鹏,钱宗珏,杨积慧,胡怡红.ATM交换机EPD性能分析[J].电子学报,1999(07):19-23. DOI：

Wu Dapeng, Qian Zongjue, Yang Jihui, et al. Performance Evaluation for Early Packet Discard in ATM Switch[J]. Acta Electronica Sinica, 1999, (7). DOI：

摘要

利用ＡＴＭ网络传送ＴＣＰ分组时的一个重要问题是分组中任何一个信元丢失都将导致分组的重传．为解决这一问题，一个方法是发生拥塞时交换机有选择地丢弃信元．在有限的存储器容量下，交换机智能化的信元集合源状态与缓存器占用的联合分布．基于这一结果，本文推导出了ＥＰＤ系统中分组丢失率的上界和下界．通过分析比较发现，使用ＥＰＤ的系统，当门限设为缓存器大小时其性能将优于无控制系统．

Abstract

A problem in sending TCP traffic over ATM network is that the loss of even one ATM cell will corrupt the whole TCP packet.In order to resolve such a problem

it has been proposed that an ATM switch is used to intelligently discard selective cells when congested.Intelligent discarding policies such as EPD can improve the performance of TCP over ATM network with limited buffer.To analyze its performance

a fluid flow model has been introduced in this paper.The joint distribution of aggregate source state and buffer occupancy is obtained.Based on these results

upper and lower bounds of packet loss probability in an EPD system are derived.The analytical comparison between EPD and oncontrol case has shown that the performance of an EPD system with the threshold set at the buffer size is better than or at least equal to the performance of an uncontrolled system.

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