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Content-aware active queue management (AQM) method for 3rd generation (3G) network video transmission

A technology for active queue management and video transmission, applied in the field of content-aware AQM, which can solve the problems of congestion, synchronization loss of low-drop priority packets, etc.

Inactive Publication Date: 2012-05-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the RIO-C algorithm is that the calculation of the average length of high discard priority packets is directly related to the number of packets with low discard priority packets in the queue
However, since the WRED algorithm uses the same average queue length to calculate the packet loss probability for the red, yellow, and green data packets, it is easy to cause high loss for H.264 / MPEG-4 video stream transmission. The continuous burst of priority packets triggers the synchronization loss of low-priority packets and starts the congestion avoidance mechanism

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  • Content-aware active queue management (AQM) method for 3rd generation (3G) network video transmission
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  • Content-aware active queue management (AQM) method for 3rd generation (3G) network video transmission

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Embodiment Construction

[0025] The invention provides a content-aware AQM method for 3G network video transmission, which can provide QoS guarantee required for network video transmission and realize better video transmission service.

[0026] First, briefly introduce the relevant content of video coding, so as to better understand the present invention. H.264 / MPEG-4 video frame is composed of I frame (intra-coded frame), P frame (forward prediction frame) and B frame (bidirectional interpolation frame). Frames matter. The discarding of the I frame will make it almost impossible to effectively decode the related P frame and B frame. It can be seen that the I frame is very important for decoding.

[0027] figure 1 It is a schematic flowchart of an embodiment of the content-aware AQM method for 3G network video transmission of the present invention. The AQM method of the present embodiment comprises:

[0028] Step S101: the core router judges the color of the received data packet mark.

[0029] St...

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Abstract

The invention discloses a content-aware active queue management (AQM) method for 3rd generation (3G) network video transmission, which comprises the following steps of: determining the marked color of the received data packet by using a core router; calculating the average queue length of virtual queues corresponding to data packets in three colors according to the marked color of the data packet; and comparing the average queue length with the set parameter to judge whether the data packet is discarded or not, wherein the step of calculating the average queue length of the virtual queues corresponding to the data packets in the three colors according to the marked color of the data packet specifically comprises the following steps of: calculating and updating the average queue length of the virtual queues corresponding to the data packets in the three colors if the data packet is a green packet; and calculating and updating the average queue length of virtual queues corresponding to a red packet and a yellow packet if the data packet is not the green packet. By the AQM method, the required quality of service (QoS) guarantee can be provided for network video transmission, and video recovery quality under a network congestion condition is improved.

Description

technical field [0001] The present invention relates to the technical field of network congestion control, in particular to a content-aware AQM (Active Queue Management, Active Queue Management) method for 3G network video transmission. Background technique [0002] The rapid development and application of wireless broadband network and Internet have provided a strong market force for the development of network multimedia transmission technology, and 3G-based wireless streaming media services are becoming increasingly popular. [0003] It is the most direct means to improve the QoS (Quality of Service, service quality) guarantee technology of the streaming media from the end system, but it is not the most effective. At present, the research on network QoS guarantee mechanism has become one of the research hotspots, which provides a great opportunity for large-scale commercial application of network video services. Network QoS guarantee and end-system-based control mechanism...

Claims

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Application Information

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IPC IPC(8): H04W28/06H04N7/26
CPCH04L47/32H04W28/14H04N21/23406H04N21/00H04L47/2416
Inventor 董育宁李强王中震廖伟全李加周阮亚平严成安
Owner ZTE CORP