Method and device for transmitting non-voice data in voice channel

A voice channel, non-voice technology, applied in the field of transmission of non-voice data and devices in the voice channel, can solve the problems of discrepancy, uncomfortable hearing of the receiver, mismatching background noise, etc.

Inactive Publication Date: 2005-05-18
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is no problem when the burst is short, but when a burst is very long, the background noise carried by the silence frame generated before the long burst may differ from the background noise at the end of the burst. Huge difference
If the receiving mobile terminal uses the silence frame generated before the long speech burst to generate background noise, it will generate mismatched background noise and the receiving party will sound uncomfortable

Method used

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  • Method and device for transmitting non-voice data in voice channel
  • Method and device for transmitting non-voice data in voice channel
  • Method and device for transmitting non-voice data in voice channel

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Embodiment Construction

[0066] In the present invention, non-speech data transmitted on a speech channel instead of a dedicated data channel is called In-Band Data (IBD: In-Band Data). The core of the method for transmitting in-band data in the voice channel of the present invention is to construct three types of in-band data frames for transmitting non-voice data on the basis of existing mobile communication service frames. These three types of in-band data frames have different frame structures from the voice frames and silent frames transmitted in the existing voice services, but have the same frame length, so that according to the method of the present invention, the existing mobile communication network system and The transmission of non-voice data can be realized under the premise of greatly modifying the hardware equipment of the mobile terminal.

[0067] In the following, the GSM full-rate voice service will be taken as an example, referring to the attached Figure 6 , attached Figure 7 An...

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Abstract

A method for transmitting non-voice data a phonetic channel by a mobile terminal in a mobile communication system includes the following steps: packaging the non-voice data being sent to another mobile end to an in-band data frame to be store in a buffer memory, detecting if the voice / burst sent to another mobile terminal is finished, if so, then detecting if there are non-voice data being sent to said another terminal, if so, then sending at least one non-voice data to it, which realizes transmitting non-voice data not on special data channels but voice channels by improving mute or soundless voice frames.

Description

technical field [0001] The invention relates to a mobile communication method and device, in particular to a method and device for transmitting non-voice data in a voice channel of a cellular mobile communication system. technical background [0002] In current second-generation or third-generation mobile communication systems, voice (speech) signals are transmitted through voice channels, while non-speech data are transmitted through dedicated data channels, and the two are independent of each other. [0003] figure 1 A schematic diagram of the processing flow for transmitting voice signals between two existing GSM mobile terminals is shown. As shown in the figure, in the sender’s mobile terminal, the voice signal to be transmitted is processed through the analog-to-digital conversion process of the analog-to-digital conversion unit 10 and the voice compression process of the voice compression unit 20, and the channel coding unit in the sender’s wireless subsystem 93 Afte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/04
CPCH04W76/15H04W76/20
Inventor 晋晓辉刘波邵晓凌冯雷
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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