Video wireless transmission QOS method, device and system

A wireless transmission and video technology, applied in the field of wireless transmission, can solve problems such as the deterioration of wireless network conditions and increase the video code stream, so as to avoid video delay and ensure the quality of video transmission.

Active Publication Date: 2019-01-04
SHENZHEN HOLLYLAND TECH CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The biggest problem in wireless video transmission is packet loss and bit errors caused by network fluctuations. Currently, commonly used QOS (Quality Of Service) mechanisms mainly include retransmission, forward error correction, dynamic bit rate control, and I frame refresh. The implementation of the transmission mechanism is: the receiving end feedbacks the packet loss sequence number-the sending end resends-the receiving end decodes, this process will bring a delay in the video; the implementation of the I frame refresh is: the receiving end sends a request I frame message-sending Encoding the I frame at the end and sending it to decoding at the receiving end, this process will also cause video delay; Forward error correction requires the sending end to consume a lot of resources to run the FEC algorithm, while occupying 10% to 30% of the wireless bandwidth , which increases the video stream, and may even further cause the deterioration of the wireless network condition

Method used

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  • Video wireless transmission QOS method, device and system
  • Video wireless transmission QOS method, device and system
  • Video wireless transmission QOS method, device and system

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Embodiment Construction

[0051] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are only examples of devices and methods consistent with some aspects of the application as detailed in the appended claims.

[0052] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit the application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used h...

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Abstract

The invention provides a video wireless transmission QOS method, device and system. The encoded data are shunted and packaged into key data and non-key data; the key data and the non-key data are transmitted to the target receiving end through a reliable channel and an unreliable channel respectively; and the target receiving end is enabled to sort and package the received key data and the non-keydata according to serial numbersand then decode the data, wherein the reliable channel is established based on the transmission protocol with the retransmission and ACK mechanism, and the unreliablechannel is established based on the transmission protocol without the retransmission and ACK mechanism. With application of the method, the key data are enabled to securely reach the receiving end bypriority so that video delay can be avoided and the video transmission quality can be guaranteed.

Description

Technical field [0001] This application relates to the field of wireless transmission, and in particular to a QOS method, device and system for wireless video transmission. Background technique [0002] With the development of wireless transmission technology, the application range of wireless video transmission has become more and more extensive, such as film and television shooting, event live broadcast, surveillance, border inspection, etc., all need to use wireless video transmission. At the same time, people are concerned about the definition and frame of the wireless transmission video. Rate and delay also put forward higher requirements. The biggest problem of wireless video transmission is the packet loss and error caused by network fluctuations. Currently, the commonly used QOS (Quality Of Service) mechanism mainly includes retransmission, forward error correction, dynamic rate control, I frame refresh, etc. The realization of the transmission mechanism is: the receivin...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L1/16
CPCH04L1/1607H04L65/80H04L65/65
Inventor 董新平周强邹旭东程武杰
Owner SHENZHEN HOLLYLAND TECH CO LTD
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