SDN-based live broadcast video streaming media distribution method

Abstract

The invention discloses a live broadcast streaming media routing optimization method based on a software defined network (SDN) concentrated central control unit. The method comprises the steps that S1, a video live broadcast service platform operation period is cut into multiple time segments; S2, current network topology information is collected through an SDN underlying switch at the beginning of each time segment and converged to an SDN central control unit through combination of live broadcast channel information and user information provided by a live broadcast platform; S3, the quality of service QoS is ensured by adopting a Lyapunov optimization method, the optimal solution is obtained by using a Pi-Page Rounding algorithm on the basis of ensuring the quality of service QoS, and the decision result includes routing selection of each video live broadcast channel; and S4, the routing selection decision is made for each video live broadcast channel based on the acquired decision result, decision information is transmitted to each SDN switch through an SDN southbound interface, and watching feedback information from users is also received in real time.

Description

technical field [0001] The present invention relates to the fields of streaming video, multimedia network, software-defined network and cloud computing resource management, and more specifically, relates to a live video streaming distribution method based on SDN (software-defined network). Background technique [0002] In recent years, Internet traffic has experienced a blowout growth, especially multimedia video traffic has contributed a large proportion. It is estimated that by 2019, multimedia video traffic will account for 80% of the entire Internet traffic. At the same time, with the rapid deployment of 3G / 4G / WiFi wireless networks and the popularization of smart terminal devices, the number of mobile Internet users is also growing rapidly, and people can access massive video services more conveniently and quickly. [0003] As a key application in video services, live video technology is widely used in various fields, including but not limited to information services (...

AI Technical Summary

Problems solved by technology

[0016] Aiming at the problems existing in the video live broadcast platform, such as massive channels, unbalanced audience distribution, complex and diverse equipment, and huge bandwidth consumption, in order to reduce the operating cost of the video live broadcast platform operator as much as possible on the basis of satisfying the quality of service, the present invention A live streaming media distribution method based on SDN (Software Defined Network) is proposed

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