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Method, device and system for multi-path TCP congestion control

A technology of congestion control and control protocol, applied in the field of communication, which can solve problems such as reducing data transmission efficiency and discarding data packets.

Active Publication Date: 2014-02-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the above-mentioned congestion control, the inventors have found that there are at least the following problems in the prior art: the sending end of the data can only perform congestion control after congestion occurs, and at this time the network node may have discarded some data packets, reducing the data transmission rate. transmission efficiency

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  • Method, device and system for multi-path TCP congestion control

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Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0056] Embodiments of the present invention provide a method for multipath TCP congestion control, such as figure 1 shown, including:

[0057] 101. The receiving end receives the data packet sent by the sending end via a network node of the first access network in at least one multipath transmission control protocol TCP subflow established by the first access network.

[0058] Specifically, the sending end accesses the receiving end through the first access n...

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Abstract

The embodiment of the invention provides a method, device and system for multi-path TCP congestion control, and relates to the field of communication. The method, device and system are used for carrying out congestion control before congestion occurs and improve efficiency of data transmission. The method comprises the steps that a data packet sent by a network node of a first access network in at least one multi-path TCP substream constructed in the first access network by a sending end is received by a receiving end; if it is detected that the data packet supports explicit congestion, a transmission ECT zone bit of an ECN is identified by a first identifier; a CE zone bit is identified by a second identifier, and congestion control is carried out on the receiving end; an ECN feedback ECE zoon bit of the data packet is identified by a third identifier; a CWR zoon bit is identified by a fourth identifier. The method, device and system are suitable for congestion control of networks.

Description

technical field [0001] The invention relates to the communication field, in particular to a method, device and system for multipath TCP congestion control. Background technique [0002] MPTCP (Multipath Transport Control Protocol, Multipath Transmission Control Protocol) is established on the basis of TCP (Transport Control Protocol, Transmission Control Protocol), and it mainly has two functions: packet scheduling and path management. MPTCP is transparent to the application layer. MPTCP distributes the data of the application layer of the sender to each sub-stream transmission, and delivers the data of each sub-stream transmission received by the receiver to the application layer in sequence. MPTCP improves resource utilization by providing multipath, thereby increasing network capacity. [0003] MPTCP relies on sub-flows to send and receive data. When sub-flows are congested, MPTCP needs to perform congestion control on sub-flows. In the prior art, MPTCP implements cong...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/801
CPCH04L69/16H04W28/02H04L47/31H04L47/33H04L29/06
Inventor 何宁朱雷
Owner HUAWEI TECH CO LTD
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