TCP SACK突发分组丢失吞吐量模型

doi:10.11959/j.issn.1000-436x.2016062

通信学报 ›› 2016, Vol. 37 ›› Issue (3): 148-156.doi: 10.11959/j.issn.1000-436x.2016062

TCP SACK突发分组丢失吞吐量模型

王志明,曾孝平,李娟,刘学,陈礼

重庆大学通信工程学院，重庆400044

出版日期:2016-03-25 发布日期:2017-08-04
基金资助:
国家自然科学基金资助项目;国家自然科学基金资助项目;国家自然科学重大研究计划培育基金资助项目

Throughput model of TCP SACK under burst losses

Zhi-ming WANG,Xiao-ping ZENG,Juan LI,Xue LIU,Li CHEN

College of Communication Engineering,Chongqing University,Chongqing 400044,China

Online:2016-03-25 Published:2017-08-04
Supported by:
The National Natural Science Foundation of China;The National Natural Science Foundation of China;The Training Program of the Major Research Plan of the National Natural Science Foundation of China

摘要/Abstract

摘要：

利用Gilbert分组丢失模型描述端对端突发分组丢失特性，提出了基于RFC6675的快重传和快恢复模型，推导并基于该模型建立TCP SACK吞吐量模型。数值实验和仿真实验表明，快重传和快恢复模型能准确描述基于RFC6675的快重传和快恢复过程；TCP SACK流吞吐量模型估计的准确性得到提升。

关键词: TCPSACK, 快重传和快恢复, 吞吐量模型, 时延带宽积

Abstract:

Describing the end-to-end burst loss characteristics by Gilbert loss model,the model of RFC6675-based fast retransmission was proposed and recovery and a throughput model of TCP SACK based on the fast retransmission and recovery model was derced.The numerical and network simulations show that the fast retransmission and recovery mod-el can accurately describe the fast retransmission and recovery process,the estimation accuracy of throughput model was promoted.

Key words: TCP SACK, fast retransmission and recovery, throughput model, bandwidth-delay product

王志明,曾孝平,李娟,刘学,陈礼. TCP SACK突发分组丢失吞吐量模型[J]. 通信学报, 2016, 37(3): 148-156.

Zhi-ming WANG,Xiao-ping ZENG,Juan LI,Xue LIU,Li CHEN. Throughput model of TCP SACK under burst losses[J]. Journal on Communications, 2016, 37(3): 148-156.

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符号	定义
W	发送分组丢失时的拥塞窗口大小
q	突发分组丢失率
?	分组丢失重传门限
m	窗口W中的分组丢失数
E_FR	快重传和快恢复阶段发分组数的期望
D_FR	快重传和快恢复阶段持续时间的期望
R	平均往返时延

TCP SACK突发分组丢失吞吐量模型

Throughput model of TCP SACK under burst losses

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