| TCP拥塞控制机制浅析 |
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| 引用本文： | 杨彦彬.TCP拥塞控制机制浅析[J].通信技术,2009,42(4):58-60. |
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| 作者姓名： | 杨彦彬 |
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| 作者单位： | 华南理工大学,电信学院,广东,广州,510640;广东邮电职业技术学院通信系,广东,广州,510630 |
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| 摘 要： | TCP是当今网络中主要的传输协议，它采用了慢启动、拥塞避免、快速重传、快速恢复四种算法，能满足IP网络中数据的可靠传输。但是当出现多个数据包丢失时，由于TCP采用了累计确认机制，造成系统吞吐量下降。文章介绍了一种SACK拥塞控制机制，与传统的Tahoe、Reno对比，并通过仿真实验说明了SACK是一种最好的TCP恢复机制。
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| 关 键 词： | 传输控制协议 拥塞控制 Tahoe Reno SACK |
Discussion on TCP Congestion Control Mechanism |
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| YANG Yan-bin.Discussion on TCP Congestion Control Mechanism[J].Communications Technology,2009,42(4):58-60. |
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| Authors: | YANG Yan-bin |
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| Affiliation: | YANG Yan-bin((1)School of Electronic and Information, South China University of Technology, Guangzhou Guangdong 510640 ;(2)Department of Communication, Guangdong Vocational College of Posts ＆ Telecommunications, Guangzhou Guangdong China; 510630, China) |
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| Abstract: | TCP is the major transportation protocol, which employs slow start, congestion avoidance, fast retransmit, and fast recovery algorithms, and could realize reliable data transportation in IP network. However, when there exist lots of lost data packets, the throughput is lowered because of TCP＇ s ACK mechanism. This thesis proposes a SACK congestion control mechanism, and the experimental simulation has proved that SACK is a good TCP recovery mechanism, and much better than conventional Tahoe and Reno. |
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| Keywords: | Tahoe Reno SACK |
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