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Method for realizing data service through voice band data VBD mode and system thereof

A data service and data technology, which is applied in the field of data flow transmission in the gateway, can solve the problem of occupying too much bandwidth, and achieve the effect of improving availability and solving loss

Inactive Publication Date: 2007-09-26
HUAWEI TECH CO LTD
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Problems solved by technology

[0014] The purpose of the present invention is to provide a method and system for implementing data services through voiceband data VBD, so as to solve the problem of occupying too wide bandwidth when implementing data services through VBD in the prior art

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  • Method for realizing data service through voice band data VBD mode and system thereof
  • Method for realizing data service through voice band data VBD mode and system thereof
  • Method for realizing data service through voice band data VBD mode and system thereof

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Embodiment Construction

[0037] Basic principle of the present invention is to use data signal detector in the system that adopts VBD mode, the valid data signal that data equipment sends and silence are distinguished, and signal frame is divided into data signal frame and non-data signal (silence) frame, and Different encoding methods are adopted for these frames, which are sent to different encoders for encoding, and only a small amount of silent information is sent during the period of non-effective data signals, which greatly reduces the output code rate.

[0038] The specific instructions are as follows:

[0039] The principle diagram of the embodiment of the present invention is shown in Fig. 3, and the whole system includes three modules: a sender gateway, a communication channel and a receiver gateway. There is a data signal detector, a low-loss speech coder and a non-speech coder in the gateway of the sender, a speech decoder and a non-speech decoder in the gateway of the receiver, and the comm...

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PUM

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Abstract

The disclosed data business method based on VBD comprises: a. a data signal detector sets the energy decision threshold to compare with the signal frame energy, if signal frame energy over the threshold, determines the data frame as data signal frame to allow it enter speech coder for low-loss coding and output, or else as the non-data signal frame to allow it enter non-speech coder for static compression coding and output; and b. the receiving side sends the speech package to speech decoder to output effective data signal, or sends the static package to non-speech decoder to reconstruct the static signal. This invention reduces channel resource occupancy greatly.

Description

technical field [0001] The present invention relates to the technical field of media stream transmission, in particular, to the technology of data stream transmission in a gateway. Background technique [0002] The rapid development of network technology makes it possible to use packet technology to transmit multimedia. The trend of integration of traditional communication technology and packet technology is becoming more and more obvious. Due to the different encoding methods of media streams transmitted in traditional communication networks and modern packet communication networks, in The combination of the traditional network and the packet network requires a codec to convert the encoding method of the media stream, and the device that realizes this conversion is a gateway. [0003] Currently, the media streams processed by the gateway mainly include voice streams, data streams, and video streams. The data stream mainly refers to the signals sent by data devices such as ...

Claims

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Application Information

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IPC IPC(8): H04Q11/04G10L11/02G10L19/00G10L19/012G10L25/78
CPCG10L19/012G10L25/78
Inventor 靳彤
Owner HUAWEI TECH CO LTD
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