RU161376U1 - DEVICE FOR JOINT TRANSMISSION OF MESSAGES AND MANAGEMENT TEAMS - Google Patents

Abstract

A device for the joint transmission of messages and control commands, comprising a transmitting part, which includes an information source and an encoder, and a receiving part, which includes a decoder, a deciding unit, and an information recipient, characterized in that the source of service commands is entered in which the command is formed - one of M possible command sequences of bits of length R, from the output of which a command sequence of length R is transmitted to the first input of the first adder, simultaneously from the output of the information source to the input of the first calculation unit CRC and the second input of the first switch transmit J information bits, at the output of the first CRC calculation block, R bits CRC are received, which are transmitted to the second input of the first adder, in the first adder, two R bits of the command sequence and R bits of the CRC are bitwise added by module. - the command and test sequence from the output of the first adder is fed to the first input of the first switch, from the output of which J information bits and R bits of the command and test sequence are transmitted sequentially to the encoder input ty, that is, a sequence of length k = J + R bits, and at the output of the encoder, which is the output of the device, a code word of length n bits is obtained, with n> k, and a code word of length n bits is received at the input of the decoder, which is the input of the device from the output of which a sequence of dyne k bits is fed to the input of the second switch, the first part of this sequence corresponding to the J received information bits is fed from the first output of the second switch to the input of the second CRC calculation unit and to the first input of the decision block, and the second part, The appropriate R bits received Koman

Description

The utility model relates to the field of electro-radio engineering, namely to radio communication technology, and can be used in data transmission systems in which it is necessary to transmit some auxiliary information, that is, commands. In particular, these may be adaptive radio communication systems in which the prompt transfer of control commands is required.

Closest to the claimed technical solution is a system for transmitting discrete information (RF patent No. 2085046 from 12.28.1994), adopted as a prototype. The system contains a source of information, an encoder, a decision unit, a decoder and a receiver of information. Functionally, the source of information and the encoder are the transmitting part, and the decoder, the deciding unit and the recipient of the information are the receiving part. The system allows the transmission of discrete information, including auxiliary service information, that is, commands.

The disadvantages of the prototype is the inability to quickly transmit commands without interrupting the transmission of information (messages) or without increasing the transmission speed or the allocated frequency band of the communication channel.

The purpose of the utility model is to ensure the transmission of additional service information, that is, commands, without interrupting the transmission of messages, as well as without increasing the transmission speed of messages and the allocated frequency band.

This goal is achieved by the fact that in the device for the joint transmission of messages and control commands, containing the transmitting part, which includes the information source and the encoder and the receiving part, which includes the decoder, the deciding unit and the recipient of information, the source of service commands is entered in which the command is generated - one of the M possible command sequences of bits of length R, from the output of which a command sequence of length R is transmitted to the first input of the first adder, simultaneously, from the output of the information source to the input of the first about the CRC calculation unit (Cyclic redundancy check - cyclic redundancy code) and the second input of the first switch transmit J information bits, the output of the first CRC calculation unit receives R CRC bits that transmit to the second input of the first adder, in the first adder carry out bitwise addition by module two R bits of the command sequence and R bits of CRC, the result of addition is the command and test sequence from the output of the first adder to the first input of the first switch, from the output of which they are transmitted sequentially J in formation bits and R bits of the command and test sequence, that is, a sequence of length k = J + R bits, and at the output of the encoder, which is the output of the device, a code word of length n bits is obtained, with n> k, and at the input of the decoder, which is the input the device receives a code word of length n bits, from the output of which the dyne to bit sequence is fed to the input of the second switch, the first part of this sequence corresponding to the J received information bits, from the first output of the second switch is fed to the input of the second block CRC calculations and to the first input of the decision block, and the second part corresponding to the R bits of the received command-verification sequence is transmitted to the second input of the second adder, while the R CRC bit is transmitted to the first input of the second adder from the output of the second CRC calculation unit, in the second adder bit addition modulo two R bits of CRC and R bits of the received command and test sequence, at the output of the second adder receive the received command sequence of length R bits, which is fed to the second input of the decision block, the deciding unit determines whether the received command sequence is one of the M possible command sequences of bits of length R, and if it is, then J received information bits are transmitted from the first output of the deciding unit to the input of the information receiver, and the corresponding output from the second output of the deciding unit command, if the received command sequence is not one of the M possible command sequences of bits of length R, then from the first and second outputs of the decision block to the corresponding inputs The odes of the recipient of information and the recipient of commands transmit a command about an incorrectly decoded received codeword.

The block diagram of the proposed device is shown in FIG.

It contains a source of service commands 1, the output of which is connected to the first input of the first adder 2, the output of which is connected to the first input of the first switch 5. Information source 3, the output of which is connected to the input of the first CRC calculation unit 4, and also to the second input of the first switch 5 moreover, the output of the first CRC calculation unit 4 is connected to the second input of the first adder 2. In this case, the output of the first switch 5 is connected to the input of the encoder 6, the output of which is the output of the device. The input of the device is the input of the decoder 7, the output of which is connected to the input of the second switch 8. The first output of the second switch is connected to the input of the second CRC calculation unit 9 and to the first input of the decision unit 10, and the second output of the second switch 8 is connected to the second input of the second adder 11, moreover, the first input of the second adder 11 is connected to the output of the second CRC calculation unit 9, and the output of the second adder And is connected to the first input of the decision unit 10. The first output of the decision block 10 is connected to the input of the information receiver 12, and w swarm output deciding unit 10 is connected to input commands recipient 13.

The operation of the device is as follows.

In the source of service commands 1 form a command - one of the M possible command sequences of bits of length R, and M "2 ^R. This sequence is transmitted from the output of the source of service commands 1 to the first input of the first adder 2. At the same time, from the output of the information source 3, J information bits are transmitted to the input of the first CRC calculation unit 4 and to the second input of the first switch 5. At the output of the first CRC calculation unit 4 receive R bits of CRC, which are transmitted to the second input of the first adder 2. In the first adder 2, two R bits of the command sequence and R bits of the CRC are bit-wise added to the module. As a result of addition, a command-verification sequence is obtained, which is transmitted from the output of the first adder 2 to the first input of the first switch 5, from the output of which J information bits and R bits of the command-verification sequence are transmitted sequentially to the input of encoder 6, that is, a sequence of length k = J + R bit. In encoder 6, a bit-length sequence is encoded by an error-correcting code. It can be any error-correcting code or several error-correcting codes (cascading code). At the output of the encoder 6, which is the output of the device, a code word of length n bits is obtained, with n> k.

The input of the decoder 7, which is the input of the device, receives a code word of length n bits. As a result of decoding at the output of decoder 7, a dyne to bit sequence is obtained, which is fed to the input of the second switch 8. The first part of this sequence, corresponding to the J received information bits, is fed from the first output of the second switch 8 to the input of the second CRC calculation unit 9 and to the first input decision block 10. The second part corresponding to the R bits of the received command-verification sequence is transmitted to the second input of the second adder 11. In this case, the first input of the second adder 11 from the output of the second block ychisleniya CRC R 9 is transmitted bits CRC. In the second adder 11, two R bits of CRC and an R bit of a received command and test sequence are bitwise added modulo, receiving, at the output, a received command sequence of length R bits. The received command sequence is fed to the second input of the decision block 10. In the decision block 10, it is determined whether the received command sequence is one of the M possible command sequences of bits of length R. If it is, then from the first output of the decision block 10, J received information bits, and from the second output of the deciding unit 10 to the input of the recipient of commands 13 corresponding command. If the received command sequence is not one of the M possible command sequences of bits of length R, then from the first and second outputs of the decision block 10 to the corresponding inputs of the recipient of information 12 and the recipient of commands 13 transmit a command about the incorrectly decoded received codeword.

The proposed device in comparison with the prototype allows you to transfer service additional information together with the transmission of information messages regardless of the type of these messages, without interrupting the transmission of information messages, as well as without increasing the transmission speed or the allocated frequency band of the communication channel.

Claims (1)

A device for the joint transmission of messages and control commands, comprising a transmitting part, which includes an information source and an encoder, and a receiving part, which includes a decoder, a deciding unit, and an information recipient, characterized in that the source of service commands is entered in which the command is formed - one of M possible command sequences of bits of length R, from the output of which a command sequence of length R is transmitted to the first input of the first adder, simultaneously from the output of the information source to the input of the first calculation unit CRC and the second input of the first switch transmit J information bits, at the output of the first CRC calculation block, R bits CRC are received, which are transmitted to the second input of the first adder, in the first adder, two R bits of the command sequence and R bits of the CRC are bitwise added by module. - the command and test sequence from the output of the first adder is fed to the first input of the first switch, from the output of which J information bits and R bits of the command and test sequence are transmitted sequentially to the encoder input ty, that is, a sequence of length k = J + R bits, and at the output of the encoder, which is the output of the device, a code word of length n bits is obtained, with n> k, and a code word of length n bits is received at the input of the decoder, which is the input of the device from the output of which a sequence of dyne k bits is fed to the input of the second switch, the first part of this sequence corresponding to the J received information bits is fed from the first output of the second switch to the input of the second CRC calculation unit and to the first input of the decision block, and the second part, The appropriate R bits received command and test sequence is transmitted to a second input the second adder, while the first adder of the second adder from the output of the second CRC calculation unit is sent R bits of CRC, in the second adder, two R bits of CRC and R bits of the received command and test sequence are modulo-bitwise, the received command sequence is received at the output of the second adder with a length of R bits, which is supplied to the second input of the decision block, it is determined in the decision block whether the received command sequence is one of the M possible command sequences of bits of length R, and if so, t о from the first output of the deciding unit to the input of the recipient of information transmit J received information bits, and from the second output of the deciding unit to the input of the recipient of the commands, the corresponding command, if the received command sequence is not one of the M possible command sequences of bits of length R, then from the first and second the outputs of the decisive block to the corresponding inputs of the recipient of information and the recipient of commands transmit a command about the incorrectly decoded received codeword.

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