Speech communication system and method based on mobile telephone speech encoding and decoding system

Abstract

This invention relates to phonetic communication system and method based on mobile telephone phonetic coding / decoding system. Said system includes mobile telephone set, gateway based on signaling communication process, comparing and consulting common phonetic coding / decoding mode, and establishing phonetic service connection, wherein the mobile telephone set including mobile communication network RF module, CPU, men-machine interface module, memory module, phonetic signal processor, power supply module, phonetic coder / decoder, microphone, earphone, WLAN chipset and protocol processor, the universal type gateway including shared memory, network processor, external interface and digital signal processor. Said invention can be used in mobile communication network and wireless local network,said gateway supporting all phonetic coding / decoding mode capable of realizing plurality of terminals unified accessing in VoIP with simplified design.

Description

technical field [0001] The invention relates to a mobile voice communication system which integrates a mobile communication network with an ordinary wireless network, in particular to a voice communication system and a communication method based on a mobile phone voice codec system. Background technique [0002] Voice codec is an important foundation of IP voice communication. The current main codec methods are: G.711, G.721, G.728, G.723.1, G.729, G.726, CDMA QCELP, GSM Enhanced Fullrate( EFR), GSMAdaptive Multi-Rate (AMR) and other voice codec methods. They have different coding efficiencies, and are customarily used for voice codecs of different devices, such as G.711, G.728, G.723, G.726, G.729 are often used for voice codecs of Internet telephony, CDMA QCELP It is used in IS-95-based CDMA system, EFR is used in GSM specification 06.60, AMR is defined in GSM06.90 system, and it is also the voice codec method of many third-generation wireless communication systems. Vari...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of large mobile phone volume, high power consumption and high cost and limited number of speech codec modes supported by existing gateways brought by the prior art of physically integrating two sets of voice services; and the present invention In the VoIP system where the gateway is located, the voice codec methods of the call terminals must be the same, so as to provide a voice communication system and communication method based on the mobile phone voice codec system, which includes mobile phones based on the existing mobile phone voice codec system And a general-purpose VoIP gateway that supports multiple terminals, it realizes the interconnection among mobile communication network, ordinary wireless network and public telephone network

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