SU1555881A1 - Communication device of ground stations - Google Patents

Abstract

The invention relates to communication systems. The purpose of the invention is to increase the reliability of communication between correspondents. The ground station communication device contains peripheral stations 1 and 2, repeater 3 and central station 4. Each station 1, 2 and 4 contains a compaction block 5, a transmitter 6, a duplexer 7, a receiver 8 and a decompressor 9. In addition, station 4 contains a block 10 for assigning channels by priorities, a block 11 for measuring signal quality, a block for ranking (BR) 12, a block for selecting (BV) 13 channels, an encoder 14, a block 15 for generating a service signal, a register 16 for addresses and a block for memory (BP) 17 priorities, and each station 1 and 2 contain a signal allocation block 18, a decoder 19 and a frequency control block 20. At station 4, the measured signal quality in the channels of all stations 1 and 2 is fed to BR 12, where the channel ranking is performed, i.e. compiling a list of channel numbers with consecutively worsening communication conditions, and in BV 13, the best channels are assigned the most important of all station 1 (2) according to the list from BP 17. This station 1 (2) turns on and transmits information on the selected best channel. Switching the most important station 1 (2) to a higher quality channel allows to increase the reliability of information transmission. 1 il.

Description

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station 4. Each station 1, 2 and 4 contains a compaction block 5, a transmitter 6, a duplexer 7, a receiver 8 and a decompressor 9. In addition, station A contains a block 10 for allocating channels by priorities, a block 11 for measuring signal quality, a block for ranking (BR) 12, a block for selecting (BV) 13 channels, an encoder 14, a block 15 for generating a service signal, a register 16 for addresses and a block for memory (PD) 17 priorities, and each station 1 and 2 contains a service signal allocation unit 18, the signal quality in the channels of all stations 1 and 2 is fed to BR 12, where the channel ranking is performed, i.e. compiling a list of channel numbers with consecutively deteriorating communication conditions, and in BB 13 the best channels are assigned the most important of all station 1 (2) according to the list from BP 17. This station 1 (2) turns on and transmits information on the selected best channel. Switching the most important station 1 (2) to a higher quality channel.

In this case, the decoder 19 and the control block 20 allow to increase the reliability of the incidence frequency. At the station 4-meter - information sharing. 1 il.

The invention relates to communication systems using repeaters and can be used in designing high-quality communication systems for ground stations and optimizing a radio link.

The purpose of the invention is to increase the reliability of communication between correspondents.

The drawing shows the structures on the electrical circuit of the device.

The device contains several peripheral stations 1 and 2, a repeater 3 and a central station 4. Lastly, the peripheral stations 1 and 2 contain a compaction unit 5, a transmitter 6, a duplexer 7, a receiver 8, a decompressor unit 9. In addition, central station 4 includes a channelr preemption unit 10, a signal quality measurement unit 11, a ranking unit 12, a channel selection unit 13, an encoder 14, a service signal generation unit 15, an address register 16, a priority memory unit 17.

Peripheral station 1 (2), in addition, contains a signal allocation block 18, a decoder 19, a frequency control block 20.

The device works as follows. ,

Transmitter signals arrive at repeater 3. Transmitter signals 3 pass through duplexer 7 to receiver 8, the output of which allocates information channels and a service channel, the output signal to which

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This is fed to a signal allocation unit 18 for processing it in order to obtain the signal intended for this peripheral station. 25 I

At central station 4, receiver 8 amplifies a high-frequency incoming signal and, at individual outputs, outlines signals from information channels that correspond to all peripheral stations 1 and 2.

The number of receiver channels 8 is equal to the number of peripheral stations 1 and 2. In all channels of receiver 8, signal quality measurement blocks 11 are installed, which determine the reception quality of signals from peripheral stations 1 and 2 (for example, noise value or signal-to-noise ratio). The signals of block 11 are processed in ranging block 12 for channelization in terms of the quality of reception of information. This channeling is transmitted to channel selection unit 13, to the second input of which a signal is sent from the list of peripheral stations 1 and 2, composed in the order of decreasing priority and stored in block 17.

In block 13, for the peripheral station 1 (2) with the highest priority, the channel number with the best quality is assigned, the peripheral station 1 (2) with the next priority is the channel number with the next best quality, etc. This data is transmitted to block 16, which stores the entire list of the corresponding channel number and peripheral station number.

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1 (2) and transmits control signals to block 10 for its installation in accordance with the received address list (i.e., to connect the subscriber of the peripheral station 1 to the channel of this peripheral station). The same list of numbers is encoded in the encoder 14 and prepared for transmission to the peripheral stations 1 (2) using the overhead signal generating unit 15 over the service channel, which is in transmitter 6.

At the peripheral station 1 (2) over the service channel in the receiver 8 a service signal is sent, from which unit 18 selects data related to this peripheral station. This data is decrypted in the decoder 19. The output signal of the decoder 19 determines the channel number of this peripheral station 1 (2), i.e. the frequency of its operation in the case of frequency multiplexing in the common trunk of the transponder 3. The control unit 20, receiving the channel number from the decoder 19, sets in the transmitter 6 and the receiver 8 the desired transmit and receive frequency to fall into the specified trunk decoder 19 by the decoder 19 .

Thus, at central station 4, the measured signal quality in the channels of all peripheral stations 1 and 2 is fed to block 12, where the channel ranking is performed, i.e. compiling a list of channel numbers with consecutively worsening communication conditions, and in block 13, the best channels are assigned the most important of all peripheral station 1 (2) in the list from block 17 of the priority memory. This peripheral station 1 (2) turns on and transmits information on the selected best channel. Since the difference in the quality of transmission across different channels can be up to 10 kB or more, switching the most important peripherals

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A station 1 (2) on a higher quality channel can significantly increase the reliability of information transmission.

Claims (1)

Invention Formula A ground station communication device containing a centrally connected compression unit, a transmitter and a duplexer at the central station, the output of which is connected to the receiver input, the output of which is connected to the input of the signal quality measurement blocker and the input of the channel distribution priority unit, the output of the channel distribution priority unit with the decompressing unit, and at each peripheral station - serially connected sealing unit, transmitter and duplexer, the output of which is connected to the receiver input, output which is connected to the input of the decompressor, characterized in that, in order to increase the reliability of communication between correspondents, serially connected ranging unit, channel selection unit, encoder to service generation unit are introduced to the output of the signal quality measuring unit 0 five a signal, the output of which is connected to the transmitter service service input, as well as a priority memory block and address register are entered, the second input of the channel selection block is connected to the output of the priority memory block, and the output of the channel selector block is connected to the address register input, output which is connected to the control input of the channel allocation unit by priorities, and on all peripheral stations serially connected service signal separation unit, a decoder and a control unit are connected to the receiver output Frequency, the output of which is connected to the control inputs of the transmitter and receiver.