RU50738U1 - GATEWAY FOR JOINT OPERATION OF DIGITAL RADIO STATIONS OF TETRA STANDARD AND ANALOGUE RADIO STATIONS USING A HEX-TONE SELECTIVE CALL SYSTEM - Google Patents

Abstract

The utility model is intended for use in the field, namely: to provide an individual call of a subscriber of an analog radio network from a TETRA standard radio station and an individual call of a subscriber of a digital radio network of a TETRA standard from an analog radio station. The technical result is to increase the speed of the gateway. The gateway contains digital and analogue transceiver radios connected to a controller designed to analyze received information and control. The controller includes a microprocessor, one of the outputs connected to the control input of an electronic key, the signal input of which is connected to an analog transceiver radio station. The controller is equipped with a second electronic key, the control input of which is connected to the second output of the processor, the signal input is connected to a digital transceiver radio station. The controller also includes an encoder, a decoder, and a TDMF decoder. The encoder input is connected to the third output of the microprocessor, and the output is connected to an analog radio station. The outputs of the decoders are connected to the first and second inputs of the processor, and the inputs are connected to the first outputs of the electronic keys. The second key outputs are associated respectively with transceiver radios. The controller and transceiver radios are equipped with interconnected UART ports.

Description

The utility model is intended for use in the field, namely: to provide an individual call of a subscriber of an analog radio network from a TETRA standard radio station and an individual call of a subscriber of a digital radio network of a TETRA standard from an analog radio station.

A known communication system in which through gateways provides communication between a TETRA standard radio network and another telephone network (EP 1220519, H 04 M 1/2745, published 05.12.2001).

The closest analogue is a gateway for establishing communication between digital and analogue radio stations, containing digital and analogue transceiver radios connected to a controller designed to analyze received information and control and including a processor, one of the outputs connected to the control input of an electronic key, a signal input which is associated with one of the transceiver radios, and means for converting codes (US 5987331, H 04 Q 7/20, published 16.11.1999, figure 2). The system using this gateway is designed for interaction by choice, both between different and between the same types of communication subscribers. However, its necessary speed when working with various types of radio stations cannot be provided.

The technical result is to increase the speed of the gateway.

The technical result is achieved by the fact that the gateway for establishing communication between digital and analogue radio stations, containing digital and analogue transceiver radios connected to a controller designed to analyze received information and

control and includes a processor, one of the outputs connected to the control input of an electronic key, the signal input of which is connected to one of the transceiver radios, and means for converting codes, the controller is equipped with a second electronic key, the control input of which is connected to the second output of the processor, the signal input is connected with another transceiver radio, the signal and code conversion means include an encoder, a decoder and a TDMF decoder, the encoder input connected to the third output of the processor RA, and the output is connected to an analogue radio station, the outputs of the TDMF decoder and decoder are connected to the first and second inputs of the processor, and the inputs are connected to the first outputs of the first and second electronic keys, the second outputs of which are connected to the corresponding radio stations, while the controller and these transceiver radios are equipped with interconnected UART ports. Digital and analogue transceiver radios are respectively a digital radio station of the TETRA standard and an analogue radio station using a six-tone selective calling system.

Figure 1 shows a telecommunication network in which the claimed gateway is used.

Figure 2 shows a diagram of the claimed gateway.

The network includes analogue stations 1.1, 1.2, 1.n., gateway 2, base station 3 of the digital TETRA mobile radio network, digital stations 4.1, 4.2, 4.n.

The gateway contains digital and analog transceiver radios 5 and 6, connected to the controller, designed for analysis of received information and control. The controller 7 includes a processor (microprocessor) 8, one of the outputs connected to the control input of the electronic key, the signal input of which is connected to the analog transceiver radio 6. The controller is equipped with a second electronic key 10, the control input of which is connected to

the second output of the processor 8, the signal input is connected to a digital transceiver radio 5. The controller 7 also includes an encoder 11, a decoder 12, and a TDMF decoder 13. The input of the encoder 11 is connected to the third output of the microprocessor 8, and the output is connected to an analog radio station 6. The outputs of the decoders 12 and 13 are connected to the first and second inputs of the processor 8, and the inputs to the first outputs of the electronic keys 9 and 10. The second outputs of the keys 9 and 10 associated with transceiver radios 5 and 6. Controller 7 and transceiver radios 5 and 6 are equipped with interconnected UART ports, respectively 14, 15 and 16.

The digital and analog transceiver stations 5 and 6 are respectively a digital radio station of the TETRA standard and an analog radio station using a six-tone selective calling system.

The gateway provides an individual call to a subscriber of an analog radio network from a TETRA standard radio station and an individual call to a subscriber of a digital radio network from a TETRA standard from an analog radio station.

The gateway is assembled in a single building in which the radio stations 5 and 6 and the controller 7 are installed.

The gateway can also work with an analog radio station that does not support the six-tone selective call protocol, but then only group calls will be made. If the subscriber analogue radio stations working with the gateway support sending DTMF tones, the gateway can make an individual call to the TETRA standard digital radio network subscriber and to the analogue radio network group subscribers.

The joint work of subscribers of an analog radio network and a digital radio network of the TETRA standard is as follows. In an individual call, to establish communication between analogue radio station 1.1 and is valid with a digital radio station of TETRA 4.N standard, first you need to transfer an individual call to analogue radio station 1.1 from 6. After receiving an individual call, the analogue radio station 6

automatically makes a call back, having received a receipt, the radio station 1.1 from a closed state goes into an open state. Further, from the subscriber station 1.1, the individual call code of the digital radio station 4.N is sent in DTMF tones and, as soon as the controller 7 decodes the last digit, the program will generate a message via the UART serial port using the AT command, to digital radio station 5, to organize an individual 4.N. Digital Radio Call

Having received a call, 4.N - opens and for sending a voice message, on 4.N the "Transfer" button is pressed. Having found the carrier, the digital radio station 5 will transmit the corresponding AT command to the controller 7. The controller will programmatically enable electronic keys for organizing audio paths between the radio stations and will transmit the command of the analogue radio station 6 to switch to the "Transmission" mode.

After releasing the “Transfer” button to 4.N, the carrier on the digital radio station 5 disappears and the corresponding AT command is sent to the controller, the latter turns off the audio paths and generates an analog radio command 6, to switch to the “Receive” mode.

When the “Transmit” button is pressed on 1.1 on an analogue radio station 6, a carrier appears and a command is given by the analogue radio station to controller 7. The controller will programmatically switch on the electronic keys for organizing audio paths between the radios and send AT the command of digital radio station 5 to switch to “Transmit” mode.

To end the voice message session, you must press the button on the control panel of the subscriber radio station with the sign - #, after the gateway receives and transmits this DTMF tone to controller 7, controller 7 decodes it and generates an AT command to end an individual or group call.

The individual call algorithm from digital radio station 4.1 of analogue subscriber 1.2 is the same as with analogue. First, with an individual code, a digital radio station 5 is called, and then they are sent

DTMF tones individual call code analogue radio station 1.2. Decoder 13 DTMF of the controller tone decodes them and after receiving the last digit the controller program organizes and transmits an individual call to analogue radio station 1.2

And then the conversation takes place according to the above algorithm.

After the controller 7 receives a command to receive the digital radio station 5 by the carrier, the microprocessor 8 of the controller 7 turns on the corresponding logic level, turns on the electronic key 10 in the position for receiving DTMF tones from the digital radio station 5, and the program of the controller 7 goes into standby mode for receiving and decoding DTMF tones from a subscriber digital radio station standard TETRA. As soon as the DTMF decoder 13 decodes the last digit of the individual call code of the subscriber analog radio station, the program of the controller 7 transfers the received code to the encoder buffer 11 of the six-tone selective call tones and to the buffer of the UART serial port.

If the interface of the analogue radio station 6 supports AT commands, then the command is sent from the controller 7 for the analogue radio station 6, an individual call to the subscriber analogue radio station.

If the interface of the analogue radio station 6 does not support AT commands, then the microprocessor 8 of the controller 7 turns on the power amplifier on the analogue radio station 6 and the controller program, using the encoder 11c, generates a sequence of tones, an individual call code of the subscriber of the analogue radio station, through TX AUDIO circuits of the analogue radio station 6.

After receiving the carrier by analogue radio station 6, the logic level at the corresponding output of processor 8 is changed. This change for the controller program means that the electronic key 9 must be switched using the output of microprocessor 8 to receive selective tones from the subscriber's analogue radio station, and decoder 12

selective tones - into the standby mode of reception and then decoding of these tones. After decoding the individual call code and transmitting the receipt to the side of the subscriber analogue radio station, the microprocessor 8 of the controller 7 switches the electronic key 9 into the receiving DTMF tones position accordingly, and the program of the controller 7 goes into standby mode for receiving and decoding DTMF tones from the subscriber analogue radio station. As soon as the DTMF decoder 13 decodes the last digit of the individual TETRA subscriber digital radio station call code, the program of the controller 7 will generate an AT command for the individual call of the digital radio network subscriber. And if the voice message mode from the subscriber side of the analog radio network is turned on, the controller 7 will send an AT command to turn on the power amplifier of the digital radio station 5.

Claims (2)

1. A gateway for establishing communication between digital and analogue radio stations, containing digital and analogue transceiver radios connected to a controller designed to analyze received information and control and including a processor, one of the outputs connected to a control input of an electronic key, the signal input of which is connected with one of the transceiver radios and code conversion means, characterized in that the controller is equipped with a second electronic key, the control input of which is is connected to the second output of the processor, the signal input is connected to another transceiver radio station, and the code conversion means include an encoder, a decoder and a TDMF decoder, with the encoder input connected to the third output of the processor and the output connected to an analog radio station, the outputs of the TDMF decoder and decoder are connected with the first and second inputs of the processor, and the inputs with the first outputs of the first and second electronic keys, the second outputs of which are connected to the corresponding radio stations, while the controller and the specified transceiver iostantsii provided with interconnected ports UART. 2. The gateway according to claim 1, characterized in that the digital and analog transceiver radios are respectively a digital radio station of the TETRA standard and an analog radio station using a six-tone selective calling system.