Method and device for determining size of congestion window

A technology of congestion window and transmission delay, applied in the field of mobile Internet, can solve the problems such as the inability to accurately determine the size of the congestion window and the inability to accurately estimate the congestion window.

Active Publication Date: 2017-05-24
HUAWEI TECH CO LTD +1
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Problems solved by technology

Nevertheless, a common defect in the above-mentioned three methods for determining the size of the buffer queue in the prior art is that the estimated queue length of the bottleneck link is when the data packet arrives at the bottleneck link by the sender, the length of the bottleneck link T

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  • Method and device for determining size of congestion window
  • Method and device for determining size of congestion window
  • Method and device for determining size of congestion window

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Embodiment Construction

[0058] The following will clearly and completely describe the technical solution in this embodiment with reference to the drawings in this embodiment. Obviously, the described embodiment is only a part of the embodiments of the present invention, but 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 creative efforts fall within the protection scope of the present invention.

[0059] The embodiment of the present invention provides a method for determining the size of the congestion window, such as figure 1 As shown, the method includes:

[0060] 101: Acquire sample data of a first preset duration, where the sample data includes at least a first number of acknowledgment ACK data packets.

[0061] Wherein, the sample data is UDP traffic data, the first preset duration can be between 200 hours and 365 hours, the first number can be any number, and the larger the value of the first nu...

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Abstract

The invention discloses a method and device for determining the size of a congestion window, relating to the technical field of mobile Internet. The invention aims to solve a problem that a congestion window size can not be accurately adjusted. The method comprises a step of obtaining the sampling data including multiple ACK data packets with a first preset time length, a step of dividing the first preset time length into multiple candidate prediction intervals according to time, a step of determining the target transmission delay corresponding to each ACK data packet, a step of calculating the correlation coefficient between the average bandwidth of each candidate prediction interval and the average bandwidth of each candidate prediction interval after each target transmission delay, a step of determining a target prediction interval and a prediction time period according to the correlation coefficient, and a step of establishing a TCP connection, periodically predicting the average bandwidth of a next transmission delay according to the prediction time period starting from the reception of a first ACK data packet, and thus periodically determining the size of the congestion window. The method and the device are applied to the process of adjusting the congestion window in mobile Internet.

Description

technical field [0001] The invention relates to the technical field of mobile Internet, in particular to a method and device for determining the size of a congestion window. Background technique [0002] Currently, many Internet applications use Transmission Control Protocol (Transmission Control Protocol, TCP) as their transmission protocol. The data packet is sent from the sending end to the receiving end through the intermediate node such as the base station. When there are many data packets, the data packet will be queued and cached at the intermediate node. The link between the data packet from the buffer queue to the intermediate node is called Bottleneck link. The queue length of the bottleneck link has a great influence on the performance of TCP, so it is necessary to accurately determine the size of the congestion window and adjust the queue length to the target queue length. [0003] Round-trip time delay (Round-Trip Time, RTT) is an important indicator used to m...

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Application Information

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IPC IPC(8): H04L12/807H04L47/27
Inventor 刘珂
Owner HUAWEI TECH CO LTD
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