Self adaptive multiple rate encoding and transmission method for voice

An adaptive multi-rate, voice technology, applied in voice analysis, radio/inductive link selection and arrangement, instruments, etc., can solve the problem of 20 millisecond voice frame loss and so on

Inactive Publication Date: 2007-04-25
CHINA RAILWAY SIGNAL & COMM SHANGHAI ENG BUREAU GRP +1
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  • Abstract
  • Description
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Problems solved by technology

It can be seen that, during the handover, some adaptive multi-rate (AMR) 20 ms voice frames are lost due to the variation of the physical channel

Method used

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  • Self adaptive multiple rate encoding and transmission method for voice
  • Self adaptive multiple rate encoding and transmission method for voice
  • Self adaptive multiple rate encoding and transmission method for voice

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Embodiment Construction

[0096] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0097] -The mobile station generates and transmits the embodiment of adaptive multi-rate (AMR) coded frame

[0098]Referring to Figure 1, as shown in the embodiment, in the mobile station, an adaptive multi-rate (AMR) encoder converts voice from sound to electrical signal, filtered, and then sampled to realize the transition from analog voice signal to digital voice For the conversion of signal 1, the encoding module encodes the digital voice signal 1 in a 20 millisecond frame. The encoding module generates a voice frame encoding sequence 2 every 20 milliseconds. Each voice frame encoding sequence includes: mode indication, several adaptive Multi-rate (AMR) voice coding frame or 1 adaptive multi-rate (AMR) silence frame. The mode indication gives the voice frame coding sequence and its adaptive multi-rate (AMR) coding frame, that is, whether it...

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Abstract

This invention relates to an adaptive multi-rate (AMR) code / decode and transmitting method in UMTS, which overcomes the short coming of losing AMR encode frames caused by switching in voice service, applies multimode AMR encode frame output method to configurate multi-voice transmission format combination and buffer store the AMR code frames, not discarding the delayed frames and set reduction for controlling AMR code mode at the wireless access network interface used in UMTS directly.

Description

Technical field [0001] The present invention relates to a method for performing adaptive and multi-rate encoding in a universal mobile communication system (UMTS) and transmitting data generated by the encoding, in particular to a method for improving the encoding of an adaptive multi-rate (AMR) encoder, The method of processing the data output to the adaptive multi-rate (AMR) decoder, the method of accessing and controlling the adaptive multi-rate (AMR) coded frame in the wireless access process, and the method for the core network (CN) and wireless access A method of transmitting adaptive multi-rate (AMR) coded bits on the RAN interface. Background technique [0002] The Technical Specification (TS) of the Third Generation Mobile Partnership Project (3GPP) stipulates the following requirements for adaptive multi-rate (AMR) encoders: [0003] —3GPP TS26.071 stipulates that the adaptive multi-rate (AMR) encoder takes a 13-bit precision pulse code modulation (PCM) format voice sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/20G10L19/00H04W4/16G10L19/24
Inventor 向为
Owner CHINA RAILWAY SIGNAL & COMM SHANGHAI ENG BUREAU GRP
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