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Method and apparatus for transmission of multimedia data

A multimedia data and video data technology, applied in the field of communication, can solve problems affecting multimedia data transmission, multimedia data cannot be adapted, aggravating bad network conditions, etc., and achieve the effect of improving transmission efficiency

Active Publication Date: 2014-07-09
BEIJING FEINNO COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Simple quality-first or smooth-first multimedia data transmission strategies cannot adapt to the current complex network conditions, and cannot give users the most suitable balance between quality and smoothness; furthermore, most users do not know the current network conditions when surfing the Internet. Therefore, the selected transmission strategy may further aggravate the bad condition of the network, which will further affect the transmission of multimedia data.

Method used

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  • Method and apparatus for transmission of multimedia data

Examples

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Effect test

Embodiment 1

[0058] The embodiment of the present invention provides a method for transmitting multimedia data, see figure 1 , the method flow includes:

[0059] 101: At the end of the current cycle, calculate the packet loss rate of the multimedia data in the current cycle according to the number of packets of multimedia data sent in the current cycle and the number of response messages received;

[0060] 102: If the packet loss rate is less than a first preset threshold, increase the acquisition parameter of the multimedia data;

[0061] 103: If the packet loss rate is greater than a second preset threshold, reduce the collection parameter of the multimedia data, where the first preset threshold is smaller than the second preset threshold;

[0062] 104: Acquire multimedia data according to the adjusted acquisition parameters of the multimedia data, and send the acquired multimedia data to a receiving end.

[0063] In the embodiment of the present invention, by calculating the packet lo...

Embodiment 2

[0065] The embodiment of the present invention provides a method for transmitting multimedia data, see figure 2 , the method flow includes:

[0066] 201: At the end of the current period, calculate the packet loss rate of the multimedia data in the current period according to the data packets of the multimedia data sent in the current period and the received response messages.

[0067] During audio or video communication, the multimedia data corresponding to the acquired audio and / or video is sent to the receiving end through a data packet. Each multimedia data packet has a packet sequence number. When the receiving end receives the multimedia data packet , will return a response message to the sender with the packet sequence number of the data packet. The sender calculates the packet loss rate of the multimedia data in the current cycle through the packet sequence number of the multimedia data packet sent by the sender recorded in the current cycle and the packet sequence n...

Embodiment 3

[0096] An embodiment of the present invention provides a device for transmitting multimedia data, see image 3 , the device consists of:

[0097] Calculation module 301, is used for at the end of the current period, according to the data packet of the multimedia data sent in the current period and the response message received, calculate the packet loss rate of the multimedia data in the current period;

[0098] The first acquisition parameter improving module 302 is used to increase the acquisition parameter of the multimedia data if the packet loss rate is less than a first preset threshold;

[0099] The first collection parameter reduction module 303 is configured to reduce the collection parameter of the multimedia data if the packet loss rate is greater than a second preset threshold, wherein the first preset threshold is smaller than the second preset threshold;

[0100] The sending module 304 is configured to acquire multimedia data according to the adjusted acquisition ...

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Abstract

The invention discloses a method and apparatus for transmission of multimedia data, and belongs to the communication technical field. The method comprises calculating a packet loss rate of multimedia data in a current cycle according to a data packet, transmitted in the current cycle, of the multimedia data and a response message received; improving acquisition parameters of the multimedia data if the packet loss rate is less than a first predetermined threshold value; reducing the acquisition parameters of the multimedia data if the packet loss rate is greater than a second predetermined threshold value which is greater than the first predetermined threshold value; and obtaining the multimedia data according to the adjusted acquisition parameters of the multimedia data, and transmitting the obtained multimedia data to a receiving terminal. According to the invention, the packet loss rate in the current cycle is calculated, the current state of a network is determined according to the relation between the packet loss rate and the predetermined threshold values, and the acquisition parameters of the multimedia data are improved or reduced in real time to adapt to the current state of the network so as to improve the transmission efficiency of the multimedia data.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for transmitting multimedia data. Background technique [0002] With the development of communication technology, audio and video instant communication methods in instant messaging applications have become the most popular communication methods at present. Audio and video are both multimedia data, which are transmitted in the network in the form of frames, and frames are used in digital communication. In is a specific information structure composed of several bits or fields predetermined according to a certain standard. [0003] In the current complex network environment, it is difficult to guarantee equal network quality between the two communicating parties. Therefore, users will manually adjust the multimedia data transmission strategy according to the current network conditions when conducting audio and video communications. For example, the user c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/08
Inventor 刘玎
Owner BEIJING FEINNO COMM TECH
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