Multipath coupling congestion control method for delay-sensitive service

Abstract

The invention provides a multipath coupling congestion control method for delay-sensitive services, and relates to the technical field of transmission optimization application. The state transition process of the method follows a mechanism of a BBR algorithm. In a ProbeBW stage, in order to meet fairness and balance congestion, data packets cached in a buffer area are allocated and sent in proportion according to Max BW * Min RTT of each substream measured at present to regulate and control the competition of each substream for bandwidth, and when a plurality of substreams compete with each other on a bottleneck link, the bandwidth obtained by each substream is in direct proportion to the size of the buffer area occupied by the substream in a link queue. Therefore, the competition of the substreams for the the bandwidth is regulated and controlled by adjusting coefficients of a cwnd. Compared with a traditional heuristic multipath coupling congestion control algorithm, the method provided by the invention has the advantages that the round-trip delay and packet loss rate are reduced, and the method is a session type service transmission control mechanism more suitable for delay-sensitive services.

Description

technical field [0001] The invention relates to the technical field of transmission optimization application, in particular to a multi-path coupling congestion control method for delay-sensitive services. Background technique [0002] Today, with the rapid development of the Internet, the demand for network services is no longer limited to traditional services such as voice and SMS. Many business scenarios have raised the demand for real-time communication, making delay-sensitive conversational services a new growth point for network services. [0003] Due to the bottleneck effect of end-to-end network bandwidth and the lag of transmission optimization technology, delay-sensitive "real-time conversational services" are generally limited to "enterprise private networks". Although WeChat is widely used, the technical solutions are not open source and not mature enough , it is difficult to effectively support delay-sensitive conversational services. The end-to-end service tran...

AI Technical Summary

Problems solved by technology

These packet losses are not caused by network congestion, but they will cause a large drop in the multi-path TCP window. Even when the network bandwidth is good, it still does not make good use of the bandwidth. Sensitive conversational services no longer simply pursue high throughput, but hope to achieve strict delay constraints under the premise of high reliability

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