Communication terminal, communication system and realization method for dmr special network

Abstract

A communication terminal, a communication system and a realization method for a DMR special network are provided, in order to determine an idle time slot beforehand and use the idle time slot to initiate a new special network communication. The DMR special network communication terminal includes a communication module, for receiving and transmitting a DMR special network communication; a synchronization module, for monitoring a DMR synchronization drawing and establishing synchronization with the drawing, and determining the current time slot based on the DMR synchronization drawing, hereby locking the beforehand allocated communication time slot; a control communication module, for receiving and transmitting the DMR special network communication in the beforehand allocated time slot. Thespecial network communication terminal is limited and so as to only communicate in the beforehand allocated communication time slot, so it is insured that the same special network communication is transmitted in the same time slot all the time. Therefore, the other terminals may lock idle time slots beforehand and so as to initiate new special network communications, thereby the DMR special resource is used enough.

Description

technical field [0001] The present invention relates to private network communication technology, and more specifically, relates to a DMR private network communication terminal, a communication system and an implementation method. Background technique [0002] DMR (Digital Mobile Radio, Digital Mobile Radio) standard is a European private network communication standard recently promulgated by ETSI (European Telecommunications Standards Institute, European Telecommunications Standards Institute) to replace analog PMR (Private Mobile Radio, private mobile radio), which has coverage With many advantages such as wide range, high transmission rate, high spectrum efficiency, and good energy saving effect, mobile communication products based on the DMR standard are widely favored by the market. [0003] The DMR standard adopts a time division multiple access frame structure of two time slots. figure 1 It is a schematic structural diagram of a DMR time division multiple access fram...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that in the prior art, the position of the time slot occupied by the same private network communication at different times is not fixed, making it impossible to determine the free time slot in advance, thus making it impossible to use the free time slot to initiate new private network communication defects, provide a DMR private network communication terminal, communication system and implementation method

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