Dedicated mobile communication terminal, system and method thereof

Abstract

The invention relates to a dedicated mobile communication terminal, which comprises a receiving unit and a control unit, wherein the receiving unit receives first and second mobile communication signals which are respectively transmitted by base stations of a restricted area and an unrestricted area; and the control unit judges the mobile communication signals received by the receiving unit, doesnot transmit an electromagnetic wave signal when the receiving unit receives the first mobile communication signal and the signal strength of the first mobile communication signal is higher than a set threshold value, and transmits the electromagnetic wave signal when the signal strength of the first mobile communication signal is lower than the set threshold value and the receiving unit receivesthe second mobile communication signal. The invention also relates to a dedicated mobile communication system and a method thereof. When a user holding the dedicated mobile communication terminal of the invention enters the unrestricted area from the restricted area or enters the restricted area from the unrestricted area, the dedicated mobile communication terminal can realize automatic switching, namely the dedicated mobile communication terminal cannot transmit the signal, can only realize paging function, cannot generate electromagnetic interference, but can receive and transmit the signal in the unrestricted area.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, and more specifically, relates to a dedicated mobile communication terminal, system and method thereof. Background technique [0002] With the development of electronics and communication technology, mobile communication technology has been widely used in daily social life, and has provided great convenience for people's life and production. However, in some special occasions, such as in nuclear power plants, according to the relevant regulations on nuclear power plant safety management, mobile communication terminals such as mobile phones and PHS that transmit radio signals are not allowed to enter the plant. Two-way communication terminal, the wireless signal emitted by it will cause electromagnetic interference to nuclear primary instrumentation, secondary protection and DCS systems. In order to avoid the above-mentioned electromagnetic interference, most mobile communica...

AI Technical Summary

Problems solved by technology

However, in some special occasions, such as in nuclear power plants, according to the relevant regulations on nuclear power plant safety management, mobile communication terminals such as mobile phones and PHS that transmit radio signals are not allowed to enter the plant. Two-way communication terminal, the wireless signal emitted by it will cause electromagnetic interference to nuclear primary instrumentation, secondary protection and DCS systems

In order to avoid the above electromagnetic interference, most mobile communication systems in nuclear power plants use paging systems, but the paging systems are difficult to meet the wireless communication needs of nuclear power plants due to backward technology and single functions

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