Congestion control method and equipment for data transmission, server and programmable equipment

Abstract

The invention discloses a congestion control method and equipment, a server and programmable equipment. The method comprises the steps of: setting the initial size of a congestion window according to the acquired transmission network type of a target data transmission link, and updating the size of the congestion window according to a first congestion parameter; when the size of the congestion window is greater than a preset threshold, acquiring a window update base value according to a packet loss parameter, acquiring a window update reference value according to a second congestion parameter, and updating the size of the congestion window according to the latest acquired window update base value and window update reference value. By adopting the congestion control method and equipment, the congestion window control for data transmission can be adaptively realized based on different transmission network types, the congestion control for data transmission can conform to the actual change of the link transmission state more accurately, and the bandwidth utilization efficiency of the transmission network is improved.

Description

technical field [0001] The present invention relates to the technical field of data transmission, and more particularly, to a congestion control method, device and programmable device for data transmission. Background technique [0002] TCP (Transmission Control Protocol) is a network transport layer communication protocol used for data transmission, which provides reliable data transmission services between network endpoints, and is currently the most widely used transport layer protocol. TCP uses a congestion control mechanism to ensure the reliable transmission of data packets and at the same time ensure the fairness of network resource usage. At present, the focus of the TCP congestion control algorithm is mainly on the control and management of the congestion window, while the congestion control algorithm based on the congestion control algorithm is based on different factors, which are generally divided into the congestion control algorithm based on packet loss feedbac...

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Problems solved by technology

[0005] In response to the above problems, there is also a hybrid congestion control method based on packet loss and delay. It is estimated that the maximum window value that the congestion window can reach and maintain when approaching network congestion is the steady-state window value. According to the delay feedback and packet loss feedback The information of the congestion window is updated, so that the size of the congestion window reaches the steady-state window value as quickly and smoothly as possible, so as to overcome the defects of updating the congestion window only for packet loss feedback or delay feedback. However, in practical applications, especially In the mobile network, there is often a sudden large number of user accesses causing sudden network congestion, and it is difficult to accurately estimate the steady-state window value corresponding to the network transmission status, so that the update of the congestion window not only cannot adapt to network changes, On the contrary, it is counterproductive and reduces the bandwidth utilization efficiency of the transmission network

[0006] In addition, with the prosperity of mobile networks, users can access mobile data services through transmission networks of different network standards such as 3G networks, 4G networks, and wifi networks. Data transmission under different network standards will involve congestion control. However, the current congestion control algorithm needs to be designed and implemented differently for different transmission networks in specific applications, and there is no method that can automatically adapt to data transmission modes of different network standards for congestion control

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