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外文翻译拥塞控制中的算法.docx

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外文翻译拥塞控制中的算法.docx

上传人:annimy 2022/4/20 文件大小:20 KB

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文档介绍:外文翻译拥塞控制中的算法
外文翻译拥塞控制中的算法
外文翻译拥塞控制中的算法
译文2  The Algorithm of Congestion Control
1.Tahoe TCP
Modern TCP implementches tcprexmtthresh, and thereafter tracks the number of duplicate ACKs。 Thus, during Fast Recovery the sender “inflate” its window by the number of dup ACKs it has received, according to the observation that each dup ACK indicates some packet has been removed from the network and is now cached at the receiver。 After entering Fast Recovery and retransmitting a single packet, the sender effectively waits until half a window of dup ACKs have been received, and then sends a new packet for each additional dup ACK that is received.
3。New—Reno TCP
We include New—Reno TCP in this paper to show how a simple change to TCP makes it possible to avoid some of the performance problems of Reno TCP without the addition of SACK. At the same time, we use New-Reno TCP to explore the fundamental limitations of TCP performance in the absence of SACK. 
The New-Reno TCP in this paper includes a small change to the Reno algorithm at the sender that eliminates Reno’s wait for a retransmit timer when multiple packets are lost from a window。 The change concerns the sender's behavior during Fast Recovery when a partial ACK is received that acknowledges some but not all of the packets that were out-standing at the start of that Fast Recovery period. In Reno, partial ACKs take TCP ou