Live video data transmission error control method based on mobile network packet loss status

A mobile network, error control technology, applied in image communication, selective content distribution, electrical components, etc., can solve wireless link instability, serious mobile network video live viewing experience, video data transmission prone to errors and loss, etc. question

Active Publication Date: 2014-11-19
XI AN JIAOTONG UNIV
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  • Description
  • Claims
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Problems solved by technology

Although the new generation of mobile network has many advantages, it still has not solved the problem of wireless link instability. During the live broadcast of mobile networ

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  • Live video data transmission error control method based on mobile network packet loss status
  • Live video data transmission error control method based on mobile network packet loss status
  • Live video data transmission error control method based on mobile network packet loss status

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Embodiment Construction

[0059] In order to increase the understanding of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and system implementation.

[0060] Such as figure 1 As shown, the implementation of the live video data transmission error control method based on the mobile network packet loss state in the present invention is composed of two parts, which are respectively a sending end error control module and a receiving end error control module, which are respectively deployed in the data transfer center (DTU) and mobile terminals. The sending end is mainly composed of a live video data stream receiving module (SM1), a mobile network packet loss status judgment module (SM2), an error control strategy decision module (SM3) and a video data sending module (SM4); the receiving end is mainly composed of a video data receiving module It is composed of a module (RM1), a video data packet loss type judging module (R...

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Abstract

The invention discloses a live video data transmission error control method based on mobile network packet loss status, the method is characterized in that the mobile network packet loss status is divided into four types according to wireless link signal to noise ratio and mobile network congestion packet loss probability: link error code packet loss, linkage interrupt packet loss, congestion-error code packet loss and congestion-interrupt packet loss, so that different error control methods are adopted in the application layers in the light of different mobile network packet loss statuses; the self-adaptive dynamic FEC (forward error correction of coding) error control method is adopted when the mobile network is in the link error code packet loss status; the active retransmission error control method is adopted when the mobile network is in the linkage interrupt packet loss status; the static state FEC error control method is adopted when the mobile network is in the congestion-error code or congestion-interrupt packet loss status. Through the adoption of the invention, package loss of live video data in the transmission process is effectively reduced, and the visual experience of terminal users of the mobile live video is improved.

Description

technical field [0001] The invention belongs to the technical field of mobile network video live broadcasting, relates to video data encoding and decoding and transmission technology, and in particular relates to a live video data transmission error control method based on a mobile network packet loss state. Background technique [0002] The rapid development of communication technology has brought about the great development of mobile network technology. The mobile network has entered the popularization stage of 3G and 4G. A major feature of the new generation of mobile network is that the bandwidth is getting larger and larger. At the same time, the hardware of the mobile terminal The level is getting higher and higher, and the content they can carry is getting richer and richer, which is mainly reflected in multimedia applications, such as live video broadcasting on mobile networks. [0003] The transmission of multimedia brings great challenges to the quality of service ...

Claims

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Application Information

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IPC IPC(8): H04N21/647H04N21/643
Inventor 杜海鹏杜彪郑庆华李俊科吕宾张未展
Owner XI AN JIAOTONG UNIV
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