RU2351012C1 - Method of simulating faults and damages in communication networks - Google Patents

Abstract

FIELD: physics; communication.

SUBSTANCE: present invention pertains to simulation and can be used when designing radio electronic and engineering systems for evaluating operational characteristics. There is numeration of apparatus, communication systems, communication lines, simulation of intended application of apparatus and communication systems, generation of time of occurrence of operational failures and damages to apparatus and communication systems, as well as generation initial time of jamming communication lines. There is further determination of the beginning of the next implementation time, corresponding to the time of operation of the apparatus or communication system. Statistical sampling is carried out of the degree of damage and the number of damages to the apparatus and communication systems, as well as duration of jamming and the number of jammed communication lines. The time spent by the apparatus and communication system in disabled state is recorded, as well as duration of jamming communication lines. Failure and damages to the apparatus and communication systems and jamming communication lines are checked. The number of damaged apparatus and communication systems, as well as the number of jammed communication lines is taken. Operating capacity of apparatus and communication systems and communication lines is checked and the overall time they spent in operational and disabled state is taken. The availability factor is then calculated, and simulation of restoring the apparatus, systems and communication lines is carried out.

EFFECT: widening possibilities of simulating process leading to faults, damages, as well as process of jamming a communication network.

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Description

The invention relates to the field of modeling and can be used in the design of electronic, technical systems for evaluating performance indicators.

Interpretation of terms used in the application: communication network - a technological system that includes means and communication lines and is intended for telecommunications (Federal Law of February 16, 1995 No. 15-ФЗ "On Communication" (as amended on January 6, July 17 1999). Adopted by the State Duma on January 20, 1995); failure - an event consisting in the violation of the operational state of an object (GOST 27.002-89. Reliability in technology. Basic concepts. Terms and definitions); failure - a self-eliminating failure or a single failure, eliminated by minor operator intervention (GOST 27.002-89); combat damage - this is damage to communications, caused by exposure to enemy weapons and (or) related damaging factors (GOST B 25883-83. Operation and repair of military equipment. Terms and definitions); communication line suppression - a set of measures and technical measures aimed at reducing the signal-to-noise ratio at the input of receivers to unsatisfactory communication quality.

There is a known simulation method implemented in the device - see the invention "Device for modeling failures and damage in complex systems" G06F 15/00, published January 27, 2007, bull. Number 3. The method consists in determining the beginning of the next statistical implementation for a time corresponding to the operating time of the communication tool or complex, generating a failure flow, the primary flow of random pulses being generated, a uniformly distributed random number corresponding to the number of the failed element being generated, information about the failed elements, and the distribution failures, about the numbers of failed elements, the formation of a flow of damage, while randomly changing over time output on Costumed, generates a random number corresponding to the number of the damaged item with a different, predetermined distribution law, provides information about the damaged elements of the distribution of injuries on non-damaged items.

A disadvantage of the analogue is the inability to simulate the process of the occurrence of failures of communication network elements, as well as the process of suppressing communication lines (channels).

The closest in technical essence to the claimed method is the method implemented in the device - see the invention "Device for modeling failures and recoveries of communications" G06F 17/00, G06N 1/00, published on 03.20.2007, bull. No. 8. The prototype method consists in the generation of pulses that simulate the occurrence of combat damage to communications (weak, medium, strong and irrecoverable), the generation of operational failures, the generation of maintenance (maintenance) of communications, simulating the transition of communications to an inoperative state (in the event of failures and combat damage) or cessation of work (during maintenance of communications equipment), simulating the restoration of communications equipment.

However, the prototype method has the disadvantage of not being able to simulate the process of failure of communication network elements, as well as the process of suppressing communication lines (channels).

The technical result of the invention is the expansion of capabilities for modeling the processes of failure, damage, malfunction, as well as the process of suppressing communication networks.

The analysis of the prior art allowed us to establish that analogues, characterized by sets of features that are identical to all the features of the claimed method, are absent. Therefore, the claimed invention meets the condition of patentability "novelty."

Search results for known solutions in this and related fields of technology in order to identify features that match the distinctive features of the claimed invention from the prototypes showed that they do not follow explicitly from the prior art. From the prior art determined by the applicant, the influence of the provided by the essential features of the claimed invention on the achievement of the specified technical result is not known. Therefore, the claimed invention meets the condition of patentability "inventive step". "Industrial applicability" of the method is due to the presence of the element base, on the basis of which devices that implement this method can be made.

The technical result is achieved by the fact that in the known method of modeling failures and recoveries of communications, which consists in generating pulses that simulate the occurrence of combat damage to communications (weak, medium, strong and irrecoverable), generating operational failures, generating maintenance of communications, simulating the transition of means communication to an inoperative state (in case of failures and combat damage) or termination of work (during maintenance of communication facilities), simulating the restoration of communication facilities and, in addition, the numbering of communication means, communication complexes, communication lines (channels) is carried out, while communication means and complexes are numbered together from 1 to n, communication lines are numbered from 1 to d, communication channels are numbered from 1 to k, then the application is imitated using the purpose of means and communication complexes, at the same time, the generation of the time of occurrence of operational failures, emergency (combat) damage and failure of communication means and complexes, as well as the generation of the start time of suppression of communication lines (channels), is determined on There is another statistical implementation for the time Δt corresponding to the operating time of the means or communication complex, a random number ξ corresponding to the number of the failed element is generated, a random number λ is formed corresponding to the number of the damaged element for a given distribution law, a random number μ corresponding to the number of the tool is formed communication having a software failure, and the beginning of the next statistical implementation is determined at a time Δt corresponding to the start time communication lines (channels), a random number η corresponding to the number of the suppressed communication line (channel) is formed, then the degree of damage and the number of damaged communication equipment and complexes are drawn, the duration of the suppression and the number of suppressed communication lines (channels) are recorded, and the time the communication means and complexes are inoperative, as well as the duration of suppression of communication lines (channels), the fact of occurrence of failure, damage, failure of means and complexes with ides and suppression lines (channels) communication is performed fixing numbers invalid (failed) means, complexes and numbers of depressed lines (channels) connection, check that the communication means and complexes, lines (channels) communication fixed total time of finding them in the working condition T _p, and fixed total residence time means, complexes, lines (channels) communication inoperable T _n, counts the availability factor K _g, the recovery means is carried imitation complex in, the lines (channels) connection.

To implement the claimed method can be in the form of an algorithm for modeling failures, damage and malfunctions of communication networks, shown in figure 1.

In block 1, the numbering of means, communication complexes, communication lines (channels) is carried out. Communication facilities and systems are numbered together from 1 to n, communication lines are numbered from 1 to d, communication channels are numbered from 1 to k. In block 2, they simulate the intended use of communication tools and complexes in such a way that for workable communication tools and complexes, the operating time is recorded in separate memory cells. The numbers of memory cells coincide with the numbers of means and communication complexes (from 1 to n). The simulation of the intended use of the communication lines (channels) is carried out in block 3. At the same time, for working communication lines (channels), the operating time is recorded in separate memory cells. Memory cells for communication lines are numbered from 1 to d, memory cells for communication channels are numbered from 1 to k. Next, in block 4, the onset of the moment of completion of the simulation is checked. If the simulation is not completed, then control is transferred to block 12. Generation of the time of occurrence of operational failures, emergency (combat) damage and failures of communication facilities and complexes is carried out in block 5 of the algorithm. At the same time, the generation of the start time of suppression of communication lines (channels) is carried out (block 6). At the same time, in block 5, the beginning of the next statistical implementation is determined at a time Δt corresponding to the operating time of the communication facility or complex, and a random number ξ corresponding to the number of the failed element is generated, a random number λ is formed corresponding to the number of the damaged element for a given distribution law, a random the number µ corresponding to the number of the element having a software failure. At the next stage, ξ · M, λ · M, μ · M are calculated, where M is the number of means, complexes, communication lines (channels), rounding the works to the nearest integer. In block 6, the beginning of the next statistical implementation is determined at a time Δt corresponding to the start time of suppressing communication lines (channels), and a random number η corresponding to the number of the suppressed communication line (channel) is generated. At the next stage, η · M is calculated, where M is the number of conditional elements of the system, rounding the product to the nearest integer. In block 7, a draw is made of the degree of damage to communication facilities and complexes, and in block 8, a draw of the duration of suppression of communication lines (channels) is performed. In block 9, the numbers of damaged means and communication complexes are drawn, in block 10, the numbers of suppressed communication lines (channels) are drawn.

The generation (simulation) methods used in blocks 5-10 depend on the type of distribution of the played values characterizing the mathematical expectations of the time of occurrence of operational failures, combat damage, failures and suppressions of communication network elements (see. Simulation of means and complexes of communication and automation. Ivanov E.V.SPb .: YOU, 1992. S. 9-18). The following methods of generating (drawing) random variables can be used (see. System modeling. GPSS World tools: Textbook. - St. Petersburg: BHV-Petersburg, 2004. - 368 pp.): Random number drawing method for discrete uniform distributions; random number draw method for discrete non-uniform distributions; random number drawing method for continuous uniform distributions; random number drawing method for continuous uneven distributions.

In block 11, a record is made of the time spent by the means and communication systems in an inoperative state, as well as the duration of suppression of communication lines (channels). Next, the fact of failure, damage, failure of communication facilities and complexes and suppression of communication lines (channels) is checked (block 12). If the fact of failure, damage, failure, suppression did not occur, then control is transferred to blocks 2 and 3. If it does, control is transferred to block 13, where the numbers of damaged (failed) means, systems and numbers of suppressed communication lines (channels) are recorded. Block 14 checks the operability of the means and complexes of communication, communication lines (channels). If the communication means and complexes, communication lines (channels) are operational, then control is transferred to block 16. In block 16, the total time spent by them in working condition (T _p ) is recorded, as well as the total time spent by means, communication complexes (lines) of communication inoperative (T _n ). In block 17, the readiness coefficient K _{g is} calculated. Block 18 imitates the restoration of funds, complexes, communication lines (channels). The recovery time of means and communication complexes depends on the degree of damage played out in block 7. The recovery time of communication lines (channels) depends on the duration of suppression played out in block 8. From block 18, control is transferred to block 12. On this, the algorithm is considered executed.

Thus, the technical result of the claimed method is achieved.

Claims (1)

A method for simulating failures and damage to communication networks, which consists in generating pulses that simulate the occurrence of combat damage to communication equipment (weak, medium, strong and irrecoverable), generating operational failures, generating technical maintenance (maintenance) of communication equipment, simulating the transition of communication equipment to an inoperative state (in case of failures and combat damage) or termination of work (during maintenance of communication facilities), simulating the restoration of communication facilities, characterized in that The numbering of means, communication complexes, communication lines (channels) is carried out precisely, while communication means and complexes are numbered together from 1 to n, communication lines are numbered from 1 to d, communication channels are numbered from 1 to k, then imitation of the intended use of funds and communication complexes, at the same time, the generation of the time of occurrence of operational failures, emergency (combat) damage and malfunctions of communication facilities and complexes, as well as the generation of the start time of suppression of communication lines (channels), is carried out, the beginning of the next statistical implementation for a time Δt corresponding to the operating time of the communication facility or complex, a random number ξ corresponding to the number of the failed element is generated, a random number λ corresponding to the number of the damaged element for a given distribution law is formed, a random number µ corresponding to the communication medium number is formed having a software failure, and also the beginning of the next statistical implementation is determined at a time Δt corresponding to the start time of line suppression (to communication), a random number η corresponding to the number of the suppressed communication line (channel) of communication is formed, then the degree of damage and the number of damaged communication equipment and complexes are drawn, the duration of the suppression and the number of suppressed communication lines (channels) are recorded, the time spent to find the funds is recorded and communication systems in an inoperative state, as well as the duration of suppression of communication lines (channels), the fact of failure, damage, failure of means and communication systems and eniya lines (channels) communication is performed fixing numbers invalid (failed) means, complexes and numbers of depressed lines (channels) connection, check that the communication means and complexes, lines (channels) communication fixed total time of finding them in the working condition T _p, and a fixed total residence time means, complexes, lines (channels) communication inoperable T _n, counts the availability factor K _g, simulation is carried out recovery means, complexes lines (ka als) connection.

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