Transport layer congestion control method capable of displaying and feeding back sliding average value of congestion level

Abstract

The invention discloses a transport layer congestion control method capable of displaying and feeding back the sliding average value of a congestion level and belongs to the computer communication network technical field. With the method adopted, the problem of difficulty in efficiently controlling congestion in a dynamic network environment which is caused by a condition that a protocol for displaying and feeding back a congestion level is incapable of satisfying high resolution or timeliness simultaneously in feedback of the instantaneous value of the congestion level can be solved. The method includes the following steps that: a message is acquired, and the ECN domain of the message is initialized into 01, so that the ECN domain-initialized message is obtained; the data arrival rate, data processing rate and data queue length of each link of the message are put into statistics, and the instantaneous congestion level of each link is calculated; mapping operation is performed on the IPid domain of the message, and whether the instantaneous congestion level is larger than the IPid domain of the message which has been subjected to the mapping operation is judged, and the ECN domain is modified according to a comparison result; the ECN domain of the message is fed back; and the sliding average value of the congestion level of a bottleneck link on a path can be calculated, and congestion control is completed. The transport layer congestion control method of the invention is applied to network congestion control.

Description

technical field [0001] The invention relates to a transmission layer congestion control method which explicitly feeds back the sliding average value of congestion degree, which is used for network congestion control and belongs to the technical field of computer communication network. Background technique [0002] After more than 20 years of vigorous development, the Internet has been integrated into every corner of people's lives. Internet end hosts usually rely on transport layer congestion control protocols to share limited network bandwidth resources. Currently the most widely used transport layer congestion control protocol is the Transmission Control Protocol (TCP). However, in many network environments, TCP exposes problems such as low bandwidth utilization, unfairness, and instability, which seriously affect the communication quality of end hosts. With the further development of the Internet, the network environment will become more complex and changeable, and the ...

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Problems solved by technology

[0005] The present invention provides a transport layer congestion control method that explicitly feeds back the moving average value of the congestion level in order to solve the above shortcomings, and solves the problem that the existing protocol that explicitly feeds back the congestion level cannot simultaneously satisfy the high resolution when feeding back the instantaneous value of the congestion level. rate or timeliness, so it is difficult to efficiently control congestion in a dynamic network environment

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