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Voice frame transmission system and method

A transmission system and transmission method technology, applied in the field of voice frame transmission system, can solve problems such as bandwidth waste, and achieve the effects of reducing transmission cost, reducing transmission bandwidth, and reducing occupation

Inactive Publication Date: 2009-02-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if the current transmission mode of the existing TDM mode is still used, that is, all SID frames are transmitted in the silent mode in the downlink direction, a large amount of bandwidth will be wasted

Method used

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  • Voice frame transmission system and method
  • Voice frame transmission system and method

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Experimental program
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Embodiment Construction

[0031] Below, combined with Figure 2-4 Detailed speech frame transmission system and method of the present invention.

[0032] figure 2 It is a schematic diagram of a downlink voice frame transmission system of an AoIP interface in DTX mode according to an embodiment of the present invention. Among them, the MGW side includes a code conversion and rate adaptation (TRAU) module and a voice frame transmission control module; the BSC side includes a rate adaptation module and a voice frame detection module.

[0033] Based on the above, the codec converter TC has been moved up to the MGW in AoIP mode, therefore, on the MGW side, the TRAU module is used to complete the generation of speech frames (Speech frames or SID frames) and output some DTX control parameters , such as the SP bit for SID frame indication. Here, the generated voice service frame can be a TRAU frame with the same structure as the voice service frame transmitted in the Abis interface in the prior art, or it ...

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Abstract

The invention provides a voice frame transmission system and a method, wherein, the system consists of an MGW and a BSC. An interface A based on IP transmission (AoIP) is arranged between the MGW and the BSC; wherein, a gateway consists of a code conversion and a speed adaptation module; the BSC consists of the speed adaptation module; wherein, the gateway also includes a voice frame transmissioncontrol module which is used for judging whether the current voice frame can be sent to the AoIP interface according to the incontinuous transmission DTX control parameter sent by the code conversionand speed adaptation module, so as to send the voice frame to the BSC through the AoIP interface; the BSC also includes a voice frame detecting module which is used for detecting and renewing the voice frames sent by the MGW through the IP network. Without affecting the voice quality, the invention greatly reduces the occupation of transmission bandwidth.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a voice frame transmission system and method. Background technique [0002] Global System For Mobile Communication (GSM) is the most widely used communication standard in mobile communication. The radio access network of the GSM system is generally called a base station subsystem (Base Station Subsystem, BSS). On the one hand, the base station subsystem is connected to the mobile station through a wireless interface to perform wireless signal transmission, reception and wireless resource management; on the other hand, the base station subsystem BSS is connected to the core network (Core Network, CN) to realize the communication Connection. [0003] In a typical GSM system, the base station subsystem BSS includes a base station controller (Base StationControler, BSC) and a base transceiver station (Base Transceiver Station, BTS); the core network (CoreNetwork, CN) i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/30H04Q7/24
Inventor 郭建林王欣晖柯昌伟
Owner ZTE CORP