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Voice frame processing method, system and base station

A processing method and technology of voice frames, applied in the field of communication, can solve the problem that the receiver can only receive noise

Inactive Publication Date: 2008-11-19
SUZHOU ISHIMARU ERI PML PRECISION MECHANISM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, when decoding fails in the uplink direction, the receiver can still receive smooth audio in the downlink direction after TC smoothing processing. However, in the case of direct local loopback, because there is no TC smoothing processing, receiving party will only receive noise

Method used

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  • Voice frame processing method, system and base station
  • Voice frame processing method, system and base station
  • Voice frame processing method, system and base station

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Experimental program
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Embodiment Construction

[0020] At present, the processing flow of the voice service in the GSM system is as follows: user A and user B talk, the user terminal performs source coding on the collected voice, and then sends it to the base station through the air interface through channel coding; the base station becomes TRAU after channel decoding (Transfer Rate Adapter Unit, code rate adaptation unit) frame, send the TRAU frame to the TC unit on the BSC through the ABIS (BSC and BTS E1Interface, the communication interface between the BSC and BTS), and the TC unit transmits the TRAU frame to the After the element is decoded, it is sent to the A port and then switched by the MSC, possibly to the PSTN (Public Switched Telephone Network, public switched telephone network), or to other MSCs or this MSC. In the downlink direction, the voice of port A is converted into a TRAU frame by TC and transmitted to the base station. The base station performs channel coding and sends it to the user terminal on the air ...

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Abstract

The invention discloses a processing method for a voice frame, a system and a base station. The method comprises the following steps: under the local loopback circumstance, a prestored mute SID frame required to be sent in the down direction is confirmed; the prestored mute SID frame is encoded and sent in the down direction. By utilizing the embodiment of the invention, the local stored mute SID frame is used for encoding and transmitting as required, the voice quality after the local loopback can be improved, and thereby the voice quality after the local loopback is equivalent to the voice service quality under the nonlocal loopback circumstance.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method, system and base station for processing speech frames. Background technique [0002] In the GSM (Global System for Mobile Communications, Global System for Mobile Communications) system, the BSS (Base Station System, base station system) usually consists of a BSC (Base Station Controller, base station controller) and one or more BTS (Base Transceiver Station, base transceiver station) The BSC is connected to the MSC (Mobile Switching Center, Mobile Switching Center), the BTS is connected to the MS (Mobile Station, Mobile Station) through a wireless interface, the BTS is responsible for wireless transmission, and the BSC is responsible for control and management. The MSC further includes an MSC Server (MSC Server) and an MGW (Media Gateway, Media Gateway). [0003] With the continuous maturity of GSM, the development speed of the mobile network is much fast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/32H04B7/26
Inventor 晏小龙
Owner SUZHOU ISHIMARU ERI PML PRECISION MECHANISM CO LTD