Encryption parameter transmitting method of wireless communication terminal equipment

Abstract

The invention discloses an encryption parameter transmitting method of wireless communication terminal equipment. The method comprises a process that a wireless digital mobile terminal initiates encrypted voice communication during a certain independent time slot among TDMA (Time Division Multiple Address) time slots and a process that a double time slot wireless mobile terminal receives the encrypted voice communication during a certain independent time slot among the TDMA time slots. By adopting the method, the existing voice load channels are not occupied, restrictions on encryption parameter bit width are also reduced, so that an encryption method with better voice quality and higher security can be provided, and further the safety performance of the double time slot terminal equipment is improved.

Description

technical field [0001] The patent of the present invention relates to the field of wireless communication, in particular to a method for solving the problem of DMR communication system realizing voice dynamic addition. Background technique [0002] DMR is a European private network wireless communication standard promulgated by the European Telecommunications Standards Institute (ETSI), which adopts a frame structure of double-slot time-division multiple access. This standard is a new all-digital professional wireless communication standard with advanced technology. Compared with a large number of analog point-to-point or cluster intercom communications currently in use, the wireless digital communication terminal equipment adopting this standard not only has the characteristics of high language clarity, high spectrum utilization rate and convenient data service functions, but also supports high security. The voice and data encryption feature is one of the more prominent an...

AI Technical Summary

Problems solved by technology

However, in the process of voice encryption by communication terminals using the DMR standard or other similar double-slot TDMA standards, a part of the effective voice load is needed when transmitting encryption and decryption algorithm parameters end-to-end

There are two weaknesses in this processing: 1, because these encryption parameters occupy a certain effective voice load, that is, occupy such as Figure 5 , the bit information transmission encryption parameter in the voice ciphertext (108) shown in 6, therefore needs to cover certain voice data, can influence voice quality to a certain extent; 2, also owing to needing to cover certain voice data, to needing The bit width of the transmitted encryption parameters has a certain limit, otherwise it will seriously affect the restoration of the voice, and even the voice data cannot be restored in severe cases. Therefore, this transmission method limits the transmission bit width of the encryption parameters, which cannot be used for the transmission of complex encryption parameters. accomplish

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