Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Self adaptive multiple rate encoding and transmission method for voice

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

Inactive Publication Date: 2005-08-03
CHINA RAILWAY SIGNAL & COMM SHANGHAI ENG BUREAU GRP +1
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0096] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0097] - Embodiment of generation and transmission of Adaptive Multi-Rate (AMR) coded frames by a mobile station

[0098] see figure 1, as shown in the embodiment therein, in the mobile station, the adaptive multi-rate (AMR) coder converts the voice from sound to electrical signal, after filtering, and then through sampling, the conversion from analog voice signal to digital voice signal 1 is realized Conversion, coding module is digital speech signal 1 coding by the mode of 20 milliseconds one frame, and coding module produces 1 speech frame coding sequence 2 every 20 milliseconds, and each speech frame coding sequence comprises: mode instruction, some self-adaptive multi-rate ( AMR) speech coded frame or 1 Adaptive Multi-Rate (AMR) silence frame. The mode indication gives the speech frame coding sequence and its adaptive multi-rate (AMR) ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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 invention relates to a method for performing adaptive and multi-rate encoding and transmitting data generated by the encoding in a Universal Mobile Telecommunications System (UMTS), in particular to a method for improving adaptive multi-rate (AMR) encoder encoding, A method for processing data output to an adaptive multi-rate (AMR) decoder, a method for accessing and controlling adaptive multi-rate (AMR) coded frames during a wireless access process, and a core network (CN) and wireless access A method of transporting Adaptive Multi-Rate (AMR) coded bits over the incoming network (RAN) interface. Background technique [0002] The Technical Specification (TS) of the Third Generation Partnership Project (3GPP) specifies the following provisions for the Adaptive Multi-Rate (AMR) encoder: [0003] — According to 3GPP TS26.071, the Adaptive Multi-Rate (AMR) encoder takes a voice signal in pulse code modulation (PCM) format with a precision of 13 bits a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04W4/16G10L19/24
Inventor 向为
Owner CHINA RAILWAY SIGNAL & COMM SHANGHAI ENG BUREAU GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com