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Method, device and system of code rate self-adaptive control in wireless transmission

A self-adaptive adjustment and wireless transmission technology, applied in the field of communication, can solve problems such as weak anti-jitter, achieve strong anti-jitter, fast code rate adjustment response, smooth image effect

Active Publication Date: 2013-05-08
SAIGE COMM SHENZHEN CITY
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Problems solved by technology

[0005] In view of this, the main purpose of the present invention is to provide a method, device and system for self-adaptive adjustment of code rate in wireless transmission, so as to solve the problem that the code rate adjustment algorithm requires stable channel bandwidth and weak anti-jitter performance in the prior art. question

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Embodiment Construction

[0072] In order to make the above objects, features and advantages of the present invention more clearly understood, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0073] The method for self-adapting code rate adjustment in wireless transmission provided by the present invention is aimed at the problem that the channel bandwidth requirement of the code rate adjustment algorithm in the prior art is stable and the anti-jitter performance is not strong, thereby causing a large end-to-end image delay. , it is proposed to use the video feature type parameter to obtain the image complexity parameter. After the video source is sent through video encoding and other processing, the receiving end feeds back the wireless channel situation. According to the image complexity and the target code rate obtained according to the wireless channel situation, the query code Obtain the frame ...

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Abstract

The invention discloses a method of code rate self-adaptive control in wireless transmission. The method of the code rate self-adaptive control in the wireless transmission is used for video code rate self-adaptive control and includes the steps: acquiring an image complexity parameter according to a video character type parameter of video source data, receiving wireless channel transmission quality information sent by a receiving end, acquiring a wireless transmission index parameter according to the wireless channel transmission quality information, acquiring a target code rate parameter according to the wireless transmission index parameter, inquiring a code rate control empirical data table to acquire an image output frame rate parameter according to the image complexity parameter and the target code rate parameter, and the image output frame rate parameter is sent to a video coding module, so that when the video coding module is used for carrying out video coding on the video source data, an output code rate of coding standard video data is adjusted by using the image output frame parameter. The invention further discloses a device and a system of the code rate self-adaptive control in the wireless transmission.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method, device and system for adaptive adjustment of code rates in wireless transmission. Background technique [0002] With the rapid development of video coding technology and the advancement of broadband digital transmission technology, mobile image transmission has been widely used in public safety, radio and television, forestry, fire protection, emergency rescue, mining, petrochemical and other fields. In video communication, due to the limitation of communication bandwidth, the video code rate needs to be adjusted, and the code rate refers to the code stream rate of video encoding. [0003] In the prior art, some rate control algorithms have been proposed to realize streaming media applications in different bandwidth environments, among which representative algorithms include the TMN5 rate control algorithm of MPEG-2 and the rate control algorithm of TMN8 of H.263 ...

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Application Information

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IPC IPC(8): H04N7/26H04N19/136H04N19/146H04N19/196
Inventor 李云许敬生
Owner SAIGE COMM SHENZHEN CITY
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