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SDN-based data service transmission optimization method and device

A technology for data services and optimization methods, applied in digital transmission systems, data exchange networks, transmission systems, etc., can solve problems such as unsatisfactory effects, and achieve the effect of ensuring normal transmission and making full use of network resources

Active Publication Date: 2019-08-30
ZHEJIANG UNIVIEW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an SDN-based data service transmission optimization method and device, which is used to solve the problem that the effect of prior art data service transmission optimization is not ideal, realize more flexible data processing measures, and improve network load capacity ;Achieving priority business processing at the data level and improving the response speed to network congestion

Method used

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  • SDN-based data service transmission optimization method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: as figure 1 As shown, in this embodiment, an SDN-based data service transmission optimization method is applied to an SDN controller, and the SDN-based data service transmission optimization method includes:

[0044] When sensing that the network bandwidth is insufficient, send an openflow data message to the corresponding front-end device according to the priority of the data service, and the action in the openflow data message is the first action, so that the front-end device receives the openflow data message , to suspend the corresponding data service;

[0045] When the recovery of the network bandwidth is sensed, an openflow data message is sent to the front-end device, and the action in the openflow data message is the second action, so that the front-end device resumes the corresponding data service.

[0046]In this embodiment, the SDN controller is located at the core of the network and uniformly schedules network resources, and the SDN controller...

Embodiment 2

[0052] Embodiment 2: as figure 2 As shown, an SDN-based data service transmission optimization method is applied to front-end equipment, including:

[0053] Receive the openflow data message from the SDN controller, analyze the packet header, and when the corresponding matching flow table is found and the action in the openflow data message is the first action, suspend the data service of the corresponding flow table, and cache the data service message;

[0054] Receive the openflow data message from the SDN controller, analyze the packet header, and restore the data service of the corresponding flow table when the corresponding matching flow table is found and the action in the openflow data message is the second action.

[0055] In the openflow protocol, the general format of an openflow data packet is as follows image 3 As shown, including packet header fields, counters and actions, in the original openflow protocol, only the routing information of the data stream has a...

Embodiment 3

[0064] Embodiment 3, an SDN-based data service transmission optimization device applied to front-end equipment, the SDN-based data service transmission optimization device includes:

[0065] The suppression module is used to receive the openflow data message from the SDN controller, analyze the packet header, and when the corresponding matching flow table is found and the action in the openflow data message is the first action, suspend the data service of the corresponding flow table, Cache the data service message;

[0066] The recovery module is used to receive the openflow data message from the SDN controller, analyze the packet header, and restore the data service of the corresponding flow table when the corresponding matching flow table is found and the action in the openflow data message is the second action.

[0067] Corresponding to Embodiment 2, the suppression module suspends the data service corresponding to the flow table, caches the data service message, and perfo...

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Abstract

The invention discloses an SDN-based data service transmission optimization method and device, and the method comprises the steps: deploying an SDN controller in a network to achieve the unified planning and scheduling of the network, carrying out the expansion of an openflow protocol, enabling front-end equipment to support the openflow protocol, and obeying the unified scheduling of the SDN controller. The SDN controller monitors the network condition in real time, and when it is found that no redundant network resources are available in the network, the SDN controller coordinates the low-priority video stream service to restrain sending. After receiving the scheduling instruction, the corresponding front-end equipment suppresses the video stream sending of the front-end equipment. Afterthe network resource is recovered, the SDN controller notifies the front-end equipment to recover the related video stream again. Normal sending of high-priority services can be effectively ensured,and network resources are fully utilized.

Description

technical field [0001] The invention belongs to the technical field of data service transmission optimization, and in particular relates to an SDN-based data service transmission optimization method and device. Background technique [0002] With the development of science and technology, video surveillance is becoming networked, high-definition, and intelligent. Now the surveillance video is mainly 1080P video clear standard. In extreme cases, for 25 frames of 1080P video, the limit bit rate of transmission is: 1920×1080×24×25bit / s=1186.52Mbit / s. [0003] Even if H.264 is used for compression (assuming a compression ratio of 102:1), the limit bit rate of 1080P moving images is 12Mbps. On the other hand, the video stream itself is bursty, and in general applications, multiple video streams often overlap. Therefore, current video surveillance has relatively high requirements for network bandwidth. [0004] In video surveillance applications, network resources are exhausted ...

Claims

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Application Information

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IPC IPC(8): H04N7/18H04L12/851
CPCH04N7/18H04L47/24
Inventor 周迪刘效国
Owner ZHEJIANG UNIVIEW TECH
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