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Mobile terminal and method for transmitting non-voice data using voice channel

A mobile terminal and voice channel technology, applied in transmission systems, digital transmission systems, telephone communications, etc., can solve problems such as increasing user communication costs, achieve the effect of reducing communication costs and enriching communication methods

Active Publication Date: 2019-07-05
SHANGHAI CHENXING ELECTRONICS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects in the prior art that using a 3G network to transmit non-voice data while using a mobile phone to communicate will generate additional data traffic charges, resulting in increased communication costs for users, and to provide a method that can use voice channels Mobile terminal for sending and receiving non-voice data and a method for transmitting non-voice data by using the voice channel of the mobile terminal

Method used

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  • Mobile terminal and method for transmitting non-voice data using voice channel
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  • Mobile terminal and method for transmitting non-voice data using voice channel

Examples

Experimental program
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Embodiment 1

[0056] Such as figure 1 As shown, the mobile terminal in this embodiment includes a modulating unit 1 , a multiplexing unit 2 , an air interface data generating unit 3 and a sending unit 4 .

[0057] The modulation unit 1 modulates the non-voice data that the user wants to send in the mobile terminal into modulated signal data in the voice frequency domain, and the modulated frequency band of the modulated signal data is consistent with the voice signal to be transmitted in the mobile terminal The frequency bands of the data do not cross.

[0058] As we all know, the frequency range of general narrowband speech is 300-3400Hz. According to the Nyquist sampling theorem, as long as the transmission bandwidth is twice that of 3400Hz (ie 6800Hz), the narrowband speech can be transmitted without loss. The narrowband speech processing bandwidth of the mobile terminal is 8000 Hz, that is, the speech frequency range of the mobile terminal is 0-8000 Hz, and 0-6800 Hz is used for transm...

Embodiment 2

[0070] Such as figure 2 As shown, the mobile terminal of this embodiment includes a receiving unit 5 , a mixed audio data acquisition unit 6 , a demultiplexing unit 7 and a demodulation unit 8 .

[0071] The mobile terminal in this embodiment corresponds technically to the mobile terminal in Embodiment 1, wherein the receiving unit 5 receives the air interface data sent by the sending unit 4 of the mobile terminal in Embodiment 1 through a voice channel.

[0072] The mixed audio data obtaining unit 6 demodulates, decodes and decompresses the air interface data to obtain the mixed audio data. This process is just opposite to the action of the air interface data generating unit 3 of the mobile terminal in Embodiment 1. The specific decompression manner may correspond to RPE-LTP decompression, AMR decompression or EVRC decompression. Similarly, voice channel decoding and demodulation and voice decompression are functions that must be possessed by every mobile terminal of a corr...

Embodiment 3

[0079] In this embodiment, the mobile terminals of Embodiment 1 and Embodiment 2 can transmit non-voice data through the voice channel, the mobile terminal of Embodiment 1 is used as the sending end, and the mobile terminal of Embodiment 2 is used as the receiving end.

[0080] Such as image 3 As shown, the method for transmitting non-speech data using a voice channel in this embodiment includes the following steps:

[0081] Step 101. The transmitting end modulates the non-speech data into modulated signal data in the voice frequency domain, and the frequency band of the modulated signal data does not overlap with the frequency band of the speech signal data to be transmitted in the transmitting end.

[0082] Step 102, the transmitting end performs data multiplexing on the modulated signal data and the voice signal data to generate mixed audio data.

[0083] Step 103: The sending end performs voice compression on the mixed audio data, and codes and modulates the voice compre...

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Abstract

The invention discloses a mobile terminal and a method for transmitting non-voice data by using a voice channel. The mobile terminal comprises a modulating unit, for modulating the non-voice data to modulating signal data of a voice frequency domain, wherein the frequency band of the modulating signal data does not intersect with the frequency band of the to-be-sent voice signal data in the mobile terminal; a multiplexing unit, for performing the data multiplexing to the modulating signal data and the voice signal data, and generating mixed voice frequency data; an air interface data generating unit, for performing the voice compression to the mixed voice frequency data, and coded-modulating as air interface data; and a sending unit, for sending the air interface data through the voice channel. The mobile terminal is capable of transmitting the non-voice data and voice data at the same time through the voice channel of the mobile terminal, so that the user can transmit the non-voice data during the communication, and the additional communication cost is not generated, the communication cost of the user is greatly reduced, and the communication modes of the current mobile terminal is enriched.

Description

technical field [0001] The present invention relates to a mobile terminal and a method for transmitting non-voice data by using a voice channel, in particular to a mobile terminal capable of transmitting and receiving non-voice data by using a voice channel and a mobile terminal capable of transmitting non-voice data by using the voice channel of the mobile terminal. method for speech data. Background technique [0002] With the rapid development of science and technology, the use of mobile terminals such as mobile phones is very common and has become an indispensable tool in people's daily life, and the most basic function of mobile phones is to make calls. In real life, the user often needs to send data to the other party while talking on the mobile phone, such as sending non-voice data such as phone numbers or pictures. At this time, the user hopes to be able to send non-voice data without interrupting the call. With the popularity of 3G (third-generation mobile communic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M11/06H04L27/00
Inventor 周林
Owner SHANGHAI CHENXING ELECTRONICS SCI & TECH CO LTD