Method and device for preventing network congestion

Abstract

The present invention discloses a method and a device for preventing network congestion, wherein the method comprises the following steps: executing feature analysis to the target medium flow, identifying a first medium flow in the target medium flow according to a pre-established first medium flow list, forwarding the first medium flow through a first forwarding queue; obtaining the present statistical bandwidth according to the feature analysis result in the target medium flow; according to the present statistical bandwidth of each first medium flow in the first medium flow list, determining whether the bandwidth in the first forwarding queue exceeds a preset bandwidth of the first forwarding queue, wherein the second medium flow is added into the first medium flow list and is added into the first forwarding queue for forwarding when the determining result is no. The method and the device of the invention prevents the package loss caused by network congestion.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and equipment for avoiding network congestion. Background technique [0002] With the increase of the types of Internet applications and the growth of the number of users, network congestion has attracted more and more attention, and has become a bottleneck restricting the development and application of the Internet. Network congestion is a positive feedback phenomenon caused by network link failure or serious overload of line equipment. The root cause is that the load provided by users to the network is greater than the capacity and processing capacity of network resources, resulting in increased packet delay and the number of discarded packets. Increase, performance degradation of the upper layer application system and other issues. [0003] In order to avoid the harm caused by network congestion to network resources, the use of network resources (such as queues...

AI Technical Summary

Problems solved by technology

[0008] The existing congestion avoidance mechanism is based on queue tail drop or packet drop based on service priority. When media streams with the same priority enter the same queue and network congestion occurs, the priority cannot be used to distinguish media streams, resulting in entering the queue. All media streams of will generate packet loss, which directly affects the video playback quality of all media streams, and new media streams with poor quality will also affect previously established media streams with good quality

And packet loss has a direct impact on video playback quality, regardless of the type of video packet loss (such as I frame, B frame or P frame), in the absence of appropriate video decoding compensation or packet loss retransmission mechanism, the video playback quality There will be varying degrees of decline

Although the impact between media streams can be avoided through RSVP (Resource Reservation Protocol, resource reservation protocol), it is required that the network equipment from the receiving end to the sending end must support RSVP, resulting in high requirements for network equipment and increasing the overall complexity of the network. degree, it is difficult to achieve large-scale deployment

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