Multi-path TCP congestion control method

A technology of congestion control and protocol, applied in the field of computer network, can solve the problem of not considering multi-path TCP protocol support, etc.

Active Publication Date: 2018-10-09
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the design of the BBR algorithm does not consider the support of the multi-path TCP protocol, which makes the simultaneous deployment of the multi-path TCP protocol and the googleBBR congestion control algorithm face severe network fairness problems

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Embodiment Construction

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] The embodiment of the present invention provides a multi-path TCP protocol congestion control method to solve the network fairness problem faced when the multi-path TCP protocol and the googleBBR congestion control algorithm are deployed simultaneously.

[0024] Since the google BBR congestion control algorithm is designed on the basis of the traditional TCP protocol, it faces severe network fairness problems when it is extended to the multip...

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Abstract

The invention discloses a multi-path TCP congestion control method. The method comprises the steps that firstly, substream weight factors for describing network environment features of different substreams in a multi-path TCP are introduced into a google BBR congestion control algorithm; secondly, convergence features of the different substreams of different multi-path TCP sessions at a shared bottleneck link when the different substreams deploy the congestion control algorithm are analyzed, and a weight-bandwidth model is built; thirdly, bottleneck bandwidth parameters and background stream parameters for recovering the shared bottleneck link weight-bandwidth model are calculated; and finally, traffic migration is achieved by taking the network fairness as a principle and utilizing a distributed substream weight factor updating iteration algorithm according to bottleneck bandwidth parameters and background stream parameters which are reproduced by the various substreams at different shared bottleneck links, and finally the network fairness guarantee is achieved.

Description

technical field [0001] The invention relates to the field of computer networks, in particular to a multipath TCP protocol congestion control method. Background technique [0002] Due to the limited number of network interfaces of early communication devices, traditional TCP technology only supports single-path data transmission between communication peers. With the development of new-generation communication technologies, communication terminals are often equipped with multiple network interfaces such as Wi-Fi and cellular, and therefore, there may be multiple reachable paths between communication peers. In order to efficiently utilize these non-repetitive paths, the multipath TCP protocol emerges as the times require. The multipath TCP protocol allows the communication peers to use a combination of different network interfaces at the same time, that is, multiple paths for data transmission. Among the multipath TCP protocol schemes that have been published, the multipath tr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/801H04L12/803H04L29/06
CPCH04L47/10H04L47/125H04L69/163
Inventor 朱霆陈力陈晓辉尹华锐王卫东卫国
Owner UNIV OF SCI & TECH OF CHINA
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