TCP communication protocol-based congestion window control algorithm and system

Abstract

The present invention discloses a TCP communication protocol-based congestion window control algorithm and system, wherein the method comprises the steps of monitoring the actual throughput and the continuous packet loss number of a network; according to the actual throughput of the network and a desired throughput, obtaining the network time delay change; determining whether the network time delay change is greater than a first threshold value and whether the continuous packet loss number is greater than a second threshold value; if yes, determining that the network congests, and updating a slow start threshold value according to a measured network available bandwidth; and setting the size of a congestion window according to the slow start threshold value. The method can determine whether the network congests accurately according to the network time delay change and the packet loss property, and can set the congestion window according to a real-timely monitored bandwidth estimation value when the network is determined to congest, so that the congestion window can converge to an actual bandwidth faster, the utilization rate of the bandwidth resources is improved, and the user experience is improved based on the operation speed of a TCP application.

Description

technical field [0001] The invention relates to the technical field of mobile networks, in particular to a control algorithm and system of a congestion window based on the TCP communication protocol. Background technique [0002] With the rise of mobile terminals, the traffic of the mobile Internet has gradually surpassed the traffic of the PC side, and users have higher and higher requirements for the running speed of applications based on TCP (Transmission Control Protocol, Transmission Control Protocol) on mobile terminals, which means that With higher requirements for the performance of the congestion window, most of the work of the control of the congestion window in the existing mobile Internet is almost completed by TCP. The implementation of the TCP protocol includes a control to avoid and control network congestion Algorithms are used to ensure the smoothness and stability of the network. [0003] At present, the occurrence of congestion can be judged by monitoring...

AI Technical Summary

Problems solved by technology

However, there is a problem that the above method does not fully consider the variability of the mobile network, especially the change of the link quality, which leads to inaccurate judgments on the occurrence of congestion, so that the network congestion cannot be dealt with in a timely and effective manner, resulting in Poor user experience

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