Token-based Internet traffic control method

Abstract

The invention discloses a token-based Internet flow control method, which relates to the flow control technology of packet switching network. The method comprises: the user terminal equipment sets the token level of the data packet to be sent according to the network congestion situation; the network access router controls the token speed of the terminal user flowing into the network; the network intermediate router has a physical congestion controller on the output interface, and the physical The congestion controller adaptively adjusts the physical congestion index according to the degree of bandwidth resource congestion, and randomly discards data packets whose token level is smaller than the physical congestion index according to the calculated fair packet loss probability; the output interface of the inter-domain interconnection router not only has a physical The congestion controller also has a virtual congestion controller. The virtual congestion controller adaptively adjusts the virtual congestion index according to the congestion degree of the token resource, and reduces the token level of all output packets. The invention can fairly allocate bandwidth resources and effectively reduce the number of packet loss inside the network.

Description

technical field [0001] The invention relates to the flow control technology of the packet switching network, in particular to a token-based Internet flow control method. Background technique [0002] At present, the flow control function of routers in the Internet is weak, and only provides network congestion information to user terminal equipment through packet loss signals. The traffic entering the network is mainly controlled by user terminal equipment through the transport layer or application layer, and the network lacks corresponding monitoring capabilities. . With the emergence of network technologies such as resumable uploads and multi-threaded downloads, the fairness and stability of the Internet have been challenged. Core-Stateless Fair Queue CSFQ (Core-Stateless Fair Queueing) is a method to enhance network flow control capabilities. It measures and marks the sending rate of session flow by the network access router. Usually, the data with the same source address...

AI Technical Summary

Problems solved by technology

This algorithm has three defects: it cannot deal with the fairness problem caused by Bit-Torrent download, it needs to re-mark the session rate when crossing different management domains, and the weight information cannot cross management domains

Due to the multi-destination address of BT download stream, the classification method of single-source and single-destination address of CSFQ session stream cannot control the aggregate transmission volume of BT business, so BT business will reduce the service quality of other traditional businesses and threaten the fairness and stability of the Internet

Since a complete trust relationship cannot be established between different management domains, its data flow needs to be remarked, which is the main performance bottleneck of the implementation of this method

Since the weight information cannot be reliably transmitted to other management domains, the weight information must be lost when the session rate is re-measured and marked between domains, so the weight function is only valid within one management domain, which limits the flexibility of the method

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