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Method and device for data transmission

A data transmission and streaming media transmission technology, applied in the field of data transmission, can solve the problems of unsmooth sound and/or picture, poor user experience, large delay jitter of data packet transmission, etc., so as to reduce or avoid unsmooth, Guaranteed transmission quality and improved user experience

Active Publication Date: 2019-08-02
北京捷联微芯科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing WIFI system does not guarantee the real-time transmission quality of audio and video streams, the transmission delay of data packets fluctuates greatly, and the delay of some packets exceeds the maximum delay that the audio and video player can tolerate, resulting in playback The sound and / or picture is not smooth, and the user experience is not good

Method used

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  • Method and device for data transmission
  • Method and device for data transmission
  • Method and device for data transmission

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Embodiment Construction

[0031] In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. Apparently, the described embodiments are only some embodiments of the present invention, rather than all embodiments of the present invention, and it should be understood that the present invention is not limited by the exemplary embodiments described here. Based on the embodiments of the present invention described in the present invention, all other embodiments obtained by those skilled in the art without creative effort shall fall within the protection scope of the present invention.

[0032] figure 1 It is a scene diagram of audio and video transmission using WIFI system. Among them, the message sent by the sending host 10 is sent via the sending WIFI (also called the sending WIFI system) 11, and received by the receiving WIFI ...

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Abstract

Embodiments of the invention provide a method for data transmission. The method comprises the following steps of receiving a first message from a sending host at a first moment by a sending WIFI system; generating a second message based on the first message, wherein the second message includes the first moment; sending the second message to a receiving WIFI system; and after the receiving WIFI system receives the second message, if a system moment reaches or exceeds a third moment, transmitting an MSDU to a receiving host, wherein a difference between the third moment and the first moment is equal to a preset delay time. In the embodiments of the invention, the sending WIFI system adds a timestamp into an MPDU, so that the end-to-end delay of the message from the sending host to the receiving host can be guaranteed, and thus the unsmooth condition can be reduced or avoided, the transmission quality of streaming data, such as audio and video streams, is guaranteed, and the user experience is improved.

Description

technical field [0001] The present invention relates to the field of communications, and more particularly to a data transmission method and device. Background technique [0002] Image sensors are an important part of digital cameras. According to different components, it can be divided into two categories: Charge Coupled Device (CCD) and Metal-Oxide Semiconductor (Complementary Metal-Oxide Semiconductor, CMOS). With the popularity of low-cost CMOS image sensors and video compression chips, the demand for wireless transmission of audio and video is increasing rapidly, and the existing wireless fidelity (Wireless Fidelity, WIFI) system is the most suitable transmission solution. However, the existing WIFI system does not guarantee the real-time transmission quality of audio and video streams, the transmission delay of data packets fluctuates greatly, and the delay of some packets exceeds the maximum delay that the audio and video player can tolerate, resulting in playback T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18H04N21/643H04N21/8547
CPCH04N7/18H04N21/643H04N21/8547
Inventor 聂红儿
Owner 北京捷联微芯科技有限公司
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