Method and system for inserting extra message in voice service code stream

A technology for additional information and voice services, applied in the field of electronic communication, can solve the problems of unpractical transmission of additional information data, inability to improve transmission efficiency, increase in cost, etc., and achieve the effects of simple structure, less network changes, and avoidance of distortion.

Active Publication Date: 2011-08-24
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, it is impractical to transmit additional information data, the transmission efficiency cannot be improved, and the network may be changed, resulting in an increase in cost

Method used

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  • Method and system for inserting extra message in voice service code stream
  • Method and system for inserting extra message in voice service code stream
  • Method and system for inserting extra message in voice service code stream

Examples

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Embodiment Construction

[0029] The present invention proposes a system and method for inserting additional information into the voice service code stream. When the priority of the additional information data is higher than that of the original sound source data, that is, the additional information data must be output immediately, Select Export additional information data. At this time, the original sound source data can be cached, and then it is decided whether to discard the data frame according to the influence degree of the data frame on the call quality. The following will describe in detail in conjunction with specific implementation modes and examples.

[0030] figure 1 It shows the system structure diagram of inserting additional information into the voice service code stream in the present invention. It includes a vocoder 101 , a data selector 103 , and a control module 104 .

[0031] The vocoder 101 encodes the original sound source data, and outputs encoded speech data to the data select...

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Abstract

The invention provides a method and a system of inserting additional information in voice service channel bit stream. The system comprises: a voice coder coding primary voice source data and outputting the coded voice data to the data selector; a data selector outputting data according to the instruction of the control module; a control module comprises: a comparing unit judging whether the priority of the primary voice source data in the voice coder is higher than the priority of additional information data and transmitting the comparative result to the triggering unit; a triggering unit sending control signals to the data selector according to the comparative result and triggering the data selector to output the additional information data when the priority of the additional informationdata is higher than the priority of the primary voice source data. The control bit stream is inserted in the primary service channel, and the control channel is not increased, so the invention has simple structure and little network modification. The invention is simple in design algorithm, easy to achieve and low in cost.

Description

technical field [0001] The invention belongs to the field of electronic communication, and in particular relates to a method and a system for inserting additional information into a voice service code stream. Background technique [0002] In a mobile digital communication system, when it is necessary to add some additional transmission messages on the basis of the original service, such as a new signaling or a new parameter, the method that can be used in the prior art is to select and The original business channel is different from the control channel for transmission, and sometimes even more equipment needs to be changed to achieve the purpose of transmission. [0003] Therefore, it becomes impractical to transmit the additional information data, the transmission efficiency cannot be improved, and the network may be modified, resulting in an increase in cost. Contents of the invention [0004] The invention provides a method and system for inserting additional informati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/10H04W84/02
Inventor 林衡华李宝荣杨维忠孙宇张琳峰王庆扬肖海林奕琳龙彪
Owner CHINA TELECOM CORP LTD
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