Video stream intelligent routing method based on QoS perception in SDN environment

Abstract

The invention discloses a video stream intelligent routing method based on QoS perception in an SDN environment. The service flow accesses an SDN network, after receiving the data packet, the SDN judges whether the service flow table is successfully matched or not, if the service flow table is successfully matched, the data is forwarded according to the Action domain of the flow table, if the service flow table is not successfully matched, whether the service is a video flow service or not is judged, if not, transmission is conducted, and if yes, the QoS perception module analyzes the QoS requirement of the video flow; the monitoring module detects link information of network bottom layer network equipment; and the route selection module selects a path for the video stream by using a DQN algorithm according to the QoS demand and link information of the QoS perception module, and issues a flow table to the underlying network device, and the underlying network device forwards data according to the flow table Action domain. According to the invention, the routing of the video stream service in the SDN environment is optimized, a special routing module is provided for the video streamaccording to the characteristics of the video stream, and the transmission quality of the video stream is improved.

Description

technical field [0001] The invention relates to a routing method, in particular to an intelligent routing method for video streams based on QoS perception in an SDN environment. Background technique [0002] With the development of society, the business volume of the network is now increasing, and the traditional network has become bloated, which has caused relatively great troubles to the management of the network. In order to make innovations to the traditional network, the Open Networking Foundation (ONF) The organization proposed a software-defined network (Software Defined Networking, SDN) architecture, which is a new network architecture, and its architecture is divided into application plane, control plane, and data plane from top to bottom. Compared with the traditional network, it realizes the decoupling of the control plane and the data plane, and the control plane realizes the function of centralized management and control of the network. In SDN, the southbound i...

AI Technical Summary

Problems solved by technology

[0006] In the SDN network, the routing algorithm currently used in most SDN controllers is the Dijstra algorithm, which is a greedy algorithm with simple steps. Concentrating on the same link means that the network throughput is not ideal, and congestion is prone to occur, and QoS factors such as the available bandwidth, delay, and packet loss rate of the link are not considered. best routing scheme

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