SU1223376A1 - Device for checking regenerators - Google Patents

Abstract

The invention can be used to control digital communication systems. The reliability of the receipt signaling increases. The device contains point 1 of transmission, point 7 of regeneration and 22 points of reception. In point I of the transmission, signals from each of the K transmitters 2 arrive at the corresponding switch 3 and the free channel allocation unit (BWSC) 4. When a free channel is detected, the corresponding BWSC 4 supplies the signal (L

Description

The signal that turns on the service signal generator 6 through the element OR 5 and ensures the passage of the service signal (CC) through the switch 3. In regeneration point 7, the pulse sequences are restored in the corresponding regenerators 8. The signals from each regenerator 8 arrive at the additional switch 13 and do not correspond to block 10 error detectors, analyzer 9 of the information signal and the switch 21, from which the signal goes to the corresponding output of regeneration point 7. When the number of errors of a given value is predetermined, the error rate is transmitted from the error rate meter 11 to the corresponding control unit 12. With this signal and the signal from the analyzer 9 information signal

1223376

- control unit 12 generates a signal which, through the element OR 17, arrives at the elements AND 18.19. The detector 14 of the service signal from the signals from the additional switch 13 detects the CC in any channel of the transmission path and generates a pulse coinciding in time with the channel. This pulse, through element 19, triggers the receipt signal generator 20 and, through demultiplexer 16 and element 18, switches switch 21 to introduce the receipt signal into the channel where the CC was transmitted. At reception point 22, the signals through the receivers 23 of the receipt signals arrive at the majority element 24. At its output, only the signal that is present on most of its inputs appears. The operation of the BVSK is explained. 4. 2 Il.

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The invention relates to communication technology and can be used to monitor the operation of digital communication systems.

The purpose of the invention is to increase the reliability of receipt signal transmission.

Figure 1 shows the structural electrical circuitry of the device; Fig. 2 shows a structural electrical circuit of a block for allocating free channels.

A device for controlling regenerators contains, in transmission point 1, K transmitters 2, K switches 3, K of free channel allocation units 4, element OR 5, service signal generator 6; in paragraph 7 of regeneration To regenerators 8, To analyzer 9 of the input signal, To 10 error detectors, To error frequency meters 11, To control units 12, additional switch 13, service signal detector 14, path number sensor 15, demultippexor 16, the element OR 17, To the elements And 18, the additional element And 19, the generator 20 of the signal of the receipt, To the switches 21; in paragraph 22

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Receiving To receivers 23 signals of receipts, majority element 24 and instructor 25.

Block i 4 allocation of free channels contains the first 26, second 27, third 28 and fourth 29 registers, the element OR 30, n counters 31, 31 '.

The device works as follows.

In point 1 of the transmission, the information signals (figure 1) from each of the K transmitters 2 are fed to the first inputs of the respective switches 3 and HP inputs of the corresponding blocks 4 of the allocation of free channels.

When a free channel is detected in the corresponding transmission system, the block 4 of the free channel allocation gives a signal that, passing through the OR element, 5, turns on the service signal generator 6, which in turn generates a corresponding signal at its output. At the same time, the free channel allocation unit 4 controls the switch 3 in such a way that the latter ensures the transmission of the service signal from the generator 6 of the service channel.

signal in the free channels of the respective transmission systems.

In this case, the search for a free channel in the transmission system by the free channel allocation unit 4 is performed as follows.

The digital information flow (Fig. 2) is sequentially recorded in the first register 26. At the output of the OR element 30, zero appears only when zeros are set at all its inputs. At times, coincide with the end of the catalog interval, i.e. when the code combination of a channel is fully recorded in the first register 26, the signal from the output of the element OR 30 is recorded in the second register. At the same time, zero is filled in the second register 27 if all the higher bits of the code group of some - the nyla are zero, and the one is in all other cases. Thus, in the second register 27, after the end of the transmission cycle, an n-bit signal of the state of all channels of the transmission system is generated. The number of zeros in each bit of the second register 27 (appears during M transmission cycles) is counted by counters 314-3j,. If the number of zeros reaches or exceeds a certain value of M (M M), then a unit appears at the output of this counter, indicating that this channel is free. After the end of M transmission cycles, the signals from the outputs of all counters 3-31n are recorded in the third register 28. Thus, in the third register 28, the status signals of each channel of the transmission system are formed (in the bit corresponding to the free channel, one is written, and this is zero). At the beginning of the transmission cycle, information from the third register 28 is rewritten into the fourth register 29 and is subsequently output to the input of the block 4 for the allocation of a free channel.

In paragraph 7 of the regeneration (Fig. 1), the pulse sequences of all the paths are restored in the corresponding regenerators 8. From the outputs of each regenerator 8, the signals from the set. blunt to the first inputs of the respective switches 21, to the inputs of congestion of the information signal 9, to the inputs of the corresponding ones you will find223376

10 errors and the input of the commutation switch 13. At each violation of the coding law, a pulse appears at the output of the corresponding error detection fO 5. With the accumulation of the number of pulses exceeding the error rate specified for a certain period of time from the meter I1, a signal is sent to the input of the control unit 12. The signal from the analyzer 9 of the information signal is fed to another input of the control unit postz.

Upon receipt of these signals

15, in the output of the control unit 12, a signal is generated which, through the element OR I7, removes from the K elements AND 18 as well as from the input of the additional element AND 19 a inhibitory signal.

20 Thus, the prohibitory signal is removed if an increase in the error rate of the norm is recorded in any path.

25 The input of the service signal detector 14 is connected via an additional switch 13 to the path, the number of which is determined by the binary combination at the outputs of the sensor 15

The JQ path, the service signal detector 14, is connected via a multiplexer 16 to another input of the And path element 18 of the same path.

The service signal detector I4 35 detects the service signal in any channel of the transmission path and generates a pulse coinciding in time with this channel. If the precautions signal from the input of the additional element And 19 and from the inputs. To elements 18 and 18 are removed (i.e., the error ratio is higher than the norm), then this pulse starts the generator 20 of the receipt signals and switches the switch corresponding to this path, the switch 21, through the corresponding output of the demultipexor 16 and the corresponding element 18. introducing into the transmission path the SO signal from the generator 20 of the receipt signals in that channel where the service signal was transmitted, i.e. into a free channel.

If the AI in one of the transmission paths does not detect exceeding the error rate, then the generator 20 of the receipt signals does not start, and the switch 21 ensures that the signals pass through the regeneration point without any changes.

Under the action of signals from sensor 15, the path number Additional switch 13 sequentially and cyclically connects the input of the service signal detector 14 to all paths, and the demultiplexer 16 connects the output of the service signal detector 14 to the inputs of the And 18 elements of the corresponding paths.

The service signal detector 14 performs (if necessary) the transmission of receipts along these paths by a signal in the same way. I

In receiving point 22, the receipt signals are received by the receivers 23 of the receipt signals and from their outputs arrive at the inputs of the majority element 24, at the output of which only the signal that is present on most of its inputs appears. Thus, the distortion of the receipt signals during transmission in one or several paths does not lead to the loss of control information, which increases the reliability of the transmission of receipt signals.

Claims (1)

Invention Formula A device for monitoring regenerators containing K transmitters, where K 2,3,4 ..., regenerators K regenerators, K error detectors, K error rate meters, K information signal analyzers, K control units, K switches and a receipt signal generator, wherein the inputs of each regenerator are connected via a communication channel with the corresponding output of the transmission point, and the outputs are connected to the first inputs of the corresponding switch, via the corresponding information signal analyzers to To the inputs of the respective control units and through the serially connected error detector and error rate meter to the second inputs of the corresponding control blocks, the output of the receipt signal generator is connected: to the second input of one of the switches, the output of each switch is the output of the regeneration point; To receivers of receipt signals, connected via corresponding channels, to communication channels with the outputs of the corresponding switches of the regeneration point, characterized in that in order to increase the reliability of the receipt signal transmission, the element OR, the service signal generator, K switches, K-blocks for allocating free channels, each of which consists of n counters for the number of channels in the transmission system, the OR element and the first, the second, third and fourth registers, the output of the fourth register is the output of a block of free channels, the input of which is the input of the first register, the outputs of which through the OR element are connected to the input of the second 20 register n out of which through the corresponding counters are connected to the corresponding, third-register inputs, the outputs of which are connected to the corresponding inputs of the fourth register, while the outputs of the respective transmitters are connected to the first inputs of the respective switches and through the corresponding units the block of free channels is connected to the control inputs of the same switches, and also to the corresponding input of the IL element, the output of which through the service signal generator is connected to the second inputs of the switches, the outputs of which are the corresponding outputs of the transfer point, an additional switch, a demultiplexer, AND elements, an OR element, an additional AND element, a service signal detector and a path number sensor, regenerator outputs are connected to the corresponding inputs of the additional switch, whose output is the service signal detector is connected to the switched input of the de-multiplexer and through an additional AND element to the input of the receipt signal generator, whose output is under for prison to second inputs of the K-1 switches, each control unit output is connected to the corresponding input of the OR gate, whose output is connected to the other input of additional element Nick the first inputs of the K-elements And, the second inputs of which are connected to the corresponding outputs of the de-multiplexer, the outputs To the elements And 71223376 connected to the control inputs of the corresponding multiplexer; at the receiving point, the mapping switches are inserted, the outputs are the sensor element, the output of which the channel number is connected to the connected to the indicator input, and in: the corresponding control inputs of the driver connected to the corresponding additional switch and demultipliers of the receipt signals. Editor O. Bugir Compiled by V.Kamal gin Tehred O. Gortv ai Proofreader L. Patay, Order 1725/59. Circulation 624 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 4/5, Moscow, Zh-35, Raushsk nab. 113035 Branch PPP Patent, Uzhgorod, st. 1a) oektna, 4  if 4 I gv Izi fpf / e.2