Anti-adaptive multi-rate coding third-generation mobile communication end-to-end voice encryption method

Abstract

The invention relates to an anti-adaptive multi-rate coding third-generation (3G) mobile communication end-to-end voice encryption method which belongs to a bran-new end-to-end voice encryption method aiming at 3G network mainstream technology wideband code division multiple access (WCDMA). In the method, a standard voice input and output interface module is connected with a WCDMA mobile phone, and voice signals of the WCDMA mobile phone are accessed into a voice encryption / decryption software module and a voice encryption / decryption hardware module to carry out voice encryption and decryption operation and realize the voice encryption / decryption function. The voice encryption / decryption hardware module (1) is a smallest hardware system module based on a field programmable gate array (FPGA) processing platform; the voice encryption / decryption software module (2) is a software module running in an FPGA chip and is used for encrypting and decrypting voice data; and the standard voice input and output interface module (3) is in charge of providing interfaces for a pair of standard earphones and the WCDMA mobile phone.

Description

technical field [0001] The invention relates to an end-to-end voice encryption method for anti-adaptive multi-rate coding (AMR) third-generation mobile communication. It is mainly applicable to the mainstream technology of the third generation of mobile communication - wideband code division multiple access (WCDMA) network system, based on the anti-AMR compression coding voice encryption and decryption algorithm, using the field programmable gate array (FPGA) chip XC3S500E as the basic platform , is an end-to-end secure communication method for wireless network terminals. Background technique [0002] With the rapid development of the third generation mobile communication technology (3G), Wideband Code Division Multiple Access (WCDMA), as one of the mainstream technologies of 3G, has attracted more and more attention from users. While paying attention to technologies such as WCDMA communication charges and communication speed, users pay more attention to their communication...

AI Technical Summary

Problems solved by technology

However, the encryption technologies of the above research institutes or groups can only be transmitted through the data channel of the 2G network because they do not have the ability to resist RPE-LTP compression coding. And the delay problem caused by the automatic retransmission mechanism cannot be overcome. Among them, the connection establishment delay can reach 20-30 seconds, and the processing delay is 0.5-1 second, which seriously affects the call effect

Second, this type of technology is based on GSM data channels, so there are interoperability problems when passing through different operators and international networks, and cross-network cannot be interconnected

Third, it does not support the existing GSM value-added services, such as existing phone cards and some other value-added services of the mobile network cannot be used at both ends of the data channel

The invention is transmitted through the voice channel of the GSM network, has the ability to resist RPE-LTP compression coding, has low call delay, and can interconnect and communicate across networks. 3G network

The invention of patent application No. 200710020992.4 proposes an end-to-end voice encryption device and method against vocoder compression, which has the ability to resist RPE-LTP compression coding and can be transmitted through the voice channel of the GSM network, but it cannot overcome the base station filtering problem , cannot realize cross-network intercommunication; and this invention is only for RPE-LTP compression coding, and cannot be applied to 3G networks

[0005] At present, the technology for the end-to-end secure communication of mobile phone voice in the 3G mobile network has not been reported, and some existing research and patents are only for the end-to-end secure communication of the mobile phone in the 2G network

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