Bandwidth allocation method and system

Abstract

The invention discloses bandwidth allocation method and system for achieving higher bandwidth utilization rate of CDN nodes on one hand, avoiding node congestion, more reasonably allocating bandwidth for connections and improving the user service quality on the other hand. The method comprises the following steps of: (1) every two periods, production machines report the connection number of various self flows and the use bandwidth of each connection corresponding to each flow to a decision-making machine; (2) the decision-making machine collects the information reported by various production machines, allocates bandwidth for each connection corresponding to each flow of each production machine and feeds back decision information relating to bandwidth allocation to the production machines; and (3) the production machines control the sending velocities of various self connections according to the received decision information from the decision-making machine.

Description

technical field [0001] The invention relates to a bandwidth management method and system on the Internet, in particular to a connection-based CDN bandwidth management method and system. Background technique [0002] CDN (Content Delivery Network, content distribution network) technology solves the situation of Internet network congestion by publishing content to the edge of the network, and improves the response speed of users visiting websites. a wide range of applications. With the rapid development of CDN, node traffic is increasing, how to effectively manage node bandwidth, provide bandwidth guarantee for high-end users and use node bandwidth more effectively has become an important issue. [0003] Most of the traditional bandwidth management technologies implement bandwidth management through queue management technology, by controlling the throughput of a certain flow at the node exit, or by controlling the passing priority and discarding priority of each flow through ...

AI Technical Summary

Problems solved by technology

[0004] However, for the bandwidth management of CDN nodes, the queue-based bandwidth management method cannot control the queue size when the network is congested, and cannot avoid greater round-trip delay (RTT) and packet loss.

Due to the RTT unfairness and multi-bottleneck unfairness of the TCP protocol, a large number of connections that occupy less bandwidth are "starved to death", while those connections that occupy more bandwidth still occupy a large amount of bandwidth, resulting in a greatly reduced user access success rate

On the other hand, using the bandwidth management technology based on the queue management mechanism will inevitably require additional equipment at the node exit, which will greatly increase the cost

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