A method and system for transmitting streaming media packets based on SDN architecture

Abstract

A method and system for transmitting streaming media data packets based on SDN architecture, said method comprising: a client sends a request to obtain a streaming media data packet to a terminal node; a terminal node sends a streaming media data packet to an SDN switch; an SDN controller formulates Different routing strategies; the SDN switch transmits streaming media data packets to the client according to the routing strategy; the SDN controller formulates a sliding window adjustment strategy based on the first network state information and streaming media QoS parameters collected by the index server, and the terminal node is based on sliding The window adjustment strategy sends the streaming media packet to the SDN switch; return to the step of executing the SDN switch to transmit the streaming media packet to the client according to the routing policy, until the client receives all the streaming media packets or receives the user's stop instruction, stop Receive streaming media packets. The invention can change the transmission strategy of the streaming media data packet according to the real-time network change, guarantee the end user's streaming media service experience, and improve the utilization rate of network resources.

Description

technical field [0001] The present invention relates to the field of data transmission, specifically, a method and system for transmitting streaming media data packets based on SDN architecture. Background technique [0002] Streaming media refers to media formats, such as audio, video or multimedia files, that are played on the Internet in a streaming manner. In the prior art, streaming media transmission needs to use a higher transmission stream bit rate to bring better playback effect, and when the network bandwidth is insufficient or the network is unstable, it will cause playback interruption or long-term buffering. Moreover, the existing streaming media transmission technology is not suitable for large-scale streaming media services because of the separation of heating strategies at the application layer and the network layer; moreover, the built-in strategy of the streaming media system is not compatible with the best-effort service model of traditional IP networks. ...

AI Technical Summary

Problems solved by technology

In the existing technology, streaming media transmission needs to use a higher transmission stream bit rate to bring better playback effect. When the network bandwidth is insufficient or the network is unstable, it will cause playback interruption or long-term buffering

Moreover, the existing streaming media transmission technology is separated from each other at the application layer and the network layer, which is not suitable for large-scale streaming media services; moreover, the built-in strategy of the streaming media system is not compatible with the best-effort service model of the traditional IP network. Good adaptation, so it brings bad experience to users

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