Flow-distinguising Feedforward active jamming control method

Abstract

A method for differentiating feed forward of a stream and controlling active congestions applies a fixed length queue method to discriminate high speed stream by calculating the stream passing through the local place within in a period of time to get a high speed stream. When an active node detects a congestion, it processes it promptly by sending a control information packet to an upward node which enters into the state of actively filtering the high speed stream and a router entering into the state of actively filtering high speed stream increases process probability to the high speed stream flowing through to realize the control to congestions which has the advantage of short response time and differentiates different speeds of flows to increase process probability to high speed flows.

Description

technical field [0001] The invention relates to an active network congestion control method, in particular to a flow-discriminating feedforward active congestion control method. It belongs to the field of information technology. Background technique [0002] The actual congestion control currently used on the Internet (IPv4) is basically based on TCP window control. TCP congestion control adopts a window-based end-to-end closed-loop control method. Specifically, TCP uses a sum-increase-product-subtraction-based end-to-end congestion control mechanism. The "sending rate" of the TCP source is controlled by the congestion window. If a data packet is lost, the sending window will be halved; otherwise, the sending amount of a data packet will simply be increased. A large number of practices have proved that this congestion control mechanism has good adaptability to best-effort services such as mass file transfers on the Internet. The TCP congestion control mechanism implies t...

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Problems solved by technology

[0004] According to the literature search, Pang Bin and others wrote "A New RED-Based Section-by-Section Congestion Control Algorithm" in "Computer Research and Development", Volume 38, No. 12, December 2001. The RED introduced in this article The feed-forward congestion control algorithm uses the feed-forward method to send packets from the point of congestion to the upstream node for control, and does not identify the high-speed flow in the router. When the high-speed flow and low-speed flow cause congestion at the same time, the high-speed flow is not identified. Priority control, the handling of congestion is still not ideal

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