Congestion control method based on GARCH time sequence algorithm

Abstract

The invention relates to a field of wireless network communications, and is used for solving a congestion problem in the wireless network communication. A technical scheme adopted by the invention is that a congestion control method based on a GARCH time sequence algorithm comprises the following steps: establishing a GARCH (p, q) autoregression condition heteroscedasticity prediction model by taking the generalized autoregression condition heteroscedasticity GARCH algorithm as the basis and taking the time interval that a sending end accepts the arrival of a correct command as a time sequence, wherein p is the order of the autoregression, and the q is the order of an ARCH item, predicting the delay time for sending a data packet by the sending end so as to obtain a prediction value; comparing the size of the data packet with the prediction value; if the actual bandwidth is greater than this value, regarding that the transmission is free from the congestion phenomenon; otherwise, regarding that the network is in the congestion phenomenon, and the size of a data sending window with the congested sending end needs to be correspondingly adjusted. The method disclosed by the invention is mainly applied to the wireless network communication.

Description

technical field [0001] The invention relates to the field of wireless network communication, in particular to solving the problem of congestion in wireless network transmission, specifically, to a congestion control mechanism based on a GARCH (generalized autoregressive conditional heteroskedasticity) time series algorithm. Background technique [0002] With the prevalence of wireless networks and the rise of the Internet, there are countless mobile terminals. Terminal devices such as PCs, mobile phones, and Macs are increasingly dependent on the network, so network congestion can be seen everywhere. How to solve the phenomenon of network congestion has always been a difficult problem for network providers. How to make full use of existing bandwidth and reduce network congestion without increasing bandwidth is a topic that every network provider is very concerned about, and it is also a development goal that brings higher benefits to companies or enterprises. If the bandwid...

AI Technical Summary

Problems solved by technology

So, how to solve this network congestion phenomenon? The traditional TCP (Transmission Control Protocol) has less packet loss rate and higher transmission stability in wired networks, but it has mediocre performance in wireless networks

The traditional TCP (Transmission Control Protocol) cannot distinguish the type of data packet loss, which is easy to cause wrong judgments

Most congestion control algorithms are implemented at the sending end, such as the PI (Proportional Integral Control) rate control algorithm, but this algorithm requires the sending end and all intermediate nodes to make corresponding changes, breaking the semantics of the traditional TCP (Transmission Control Protocol), so it does not is widely used

Images