RU2662637C1 - Method of the multi-service network segment operational-technical control under the crisis situations conditions - Google Patents

Abstract

FIELD: electrical equipment.

SUBSTANCE: invention relates to the electrical communication technique. In the method setting a number of crisis situations S_w and the proposed traffic intensities statistical data for each crisis situation a_{k, w st}, memorizing plurality of crisis situations S_w and the proposed traffic intensities statistical data a_{k, w st} for each crisis situation, estimating the necessary minimum volume of the V_w channel resource for each crisis situation, memorizing the necessary minimum volume of the V_w channel resource for each crisis situation, determining the crisis situation existence, if the crisis situation occurrence is identified, determining the crisis situation type S_w and the corresponding to it value V_w, comparing present in the network channel resource amount V with the value V_w for the identified crisis situation, if the V value is less than the V_w value, forming the channel resource V_w necessary minimum volume.

EFFECT: technical result is improved data transmission security.

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Description

The invention relates to techniques for electrical communication, namely, communication networks with packet switching, monitoring and measurement, can be used to automatically provide the required quality of customer service in crisis situations, in the absence of direct influence of destabilizing factors on the communication network.

The following terms are used in the description of the present invention.

A multiservice network is a network built in accordance with the NGN concept to serve the traffic of various communication applications (speech, video, data) (Stepanov S.N. Fundamentals of the teletraffic of multiservice networks. - M: Eco-Trends, 2010, - 392 p. C. 22).

A multiservice network segment is a logically or physically isolated part of a multiservice network.

Crisis situation - circumstances of emergency, including terrorist nature (Order of the Government of the Russian Federation of 09.08.2005, No. 1215 - p).

The quality of service of applications is determined by the share of lost applications (Stepanov S.N. Fundamentals of teletraffic of multiservice networks. - M.: Eco-Trends, 2010, - 392 p. P. 111).

An application is a user’s requirement to allocate a channel resource in order to transmit the corresponding information message (Stepanov S.N. Basics of teletraffic of multiservice networks. - M .: Eco-Trends, 2010, - 392 p. 24).

A destabilizing factor is the impact on the telecommunication network, the source of which is a physical or technological process of an internal or external nature with respect to the telecommunication network, leading to failure of the network elements (GOST R 53111-2008 Stability of the functioning of the public communication network).

The intensity of the proposed traffic, by definition, the value of this characteristic coincides with the intensity of traffic in a system with an unlimited number of information transfer resource units (Stepanov S.N. Basics of teletraffic: concepts, models, applications. - M .: hot line - Telecom, 2015, - 868 p.: Ill. S. 64).

The known method implemented in the device, which allows to reduce the time to determine the emergency state of communication channels and use the components of the backup or main path, use the backup path during peak hours "Device for assessing the technical condition and ensuring the stability of channels and communications in telecommunication systems" (patent RU 2385537, 03/27/2010); a technical solution to optimize the channel resource of primary networks of operational-technological communication "System of digital operational-technological communication of railway transport" (patent RU 2497187, 10.27.2013); a method that allows for more efficient bandwidth allocation at an access point, operating with aggregation of heterogeneous traffic flows, “Method and bandwidth management system” (patent RU 2597227, 09/10/2016).

The disadvantage of these analogues is the high proportion of lost applications due to the long time required to determine the increases in the intensity of the proposed traffic, typical for various crisis situations in the absence of direct influence of destabilizing factors on the communication network.

The closest in technical essence to the prototype method, is the method implemented in the invention "Method (options) for monitoring and ensuring the required quality of customer service in multiservice networks": patent RU 2517327, 03/28/2014. The prototype method consists in the following actions:

1. The number of application flows for allocation of a channel resource is set n, k = 1, 2, ..., n, the intensity of the proposed traffic of the k-th application flow and _k , different requirements for the quality of service of applications of the k-th flow π _{k tr} , π _{k tr} - the required share of lost applications, the number of units of the line resource needed to service one application of the k-th stream b _k .

2. Remember the number of application flow for allocation of a channel resource n, k = 1, 2, ..., n, the intensity of the proposed traffic of the k-th application flow and _k , different requirements for the quality of service of applications of the k-th flow π _{k tr} , the number of resource units line needed to service one application of the k-th stream b _k .

3. Estimate the required minimum amount of channel resource V.

4. Remember the required minimum amount of channel resource V.

5. Form the estimated necessary minimum amount of channel resource.

6. Monitor the status of the main and backup paths without disconnecting subscribers.

7. Measure the intensity of the proposed traffic on the network a _{k cc} and the speed of the line on a single telecommunication network V _cc and remember them.

8. Control the operational situation of communication on the communication network.

9. Predict changes in the required load a _k PR and the possibility of ESE in time.

10. The previous values b _k , π _{k tr} , n, and _k , V are erased.

11. Record the adjusted values of a _k , b _k , n, π _{k tr} , and _{k ave} .

12. Estimate the required minimum amount of channel resource V and remember V.

13. Compare the required minimum amount of channel resource V with the forecast results of the capabilities of the unified telecommunication network V _pr , while if, according to the results of the comparison, the estimated value of the required minimum amount of channel resource V is greater than the capabilities of the unified telecommunication network V _pr , proceed to the formation of the required minimum amount of channel resource V, or, if, based on the results of comparison, the estimated value of the required minimum amount of channel resource V is less than the capabilities of a unified telecommunication network V _pr , from they turn off the excess channel resource and return it to the unified telecommunication network, while first of all those channel units that are in an emergency state and, or, turn off the communications equipment, are turned off.

The prototype method under consideration has the ability to reduce the proportion of lost applications by adapting to the rapidly changing operational environment of communication on the communication network and the unified telecommunication network using prediction of the intensity of the proposed traffic and the capabilities of the unified telecommunication network.

However, the prototype method has the following disadvantage:

- a high proportion of lost applications due to the long time required to determine the increase in the intensity of the proposed traffic, typical for various crisis situations in the absence of direct influence of destabilizing factors on the communication network.

The objective of the invention is the creation of a method of operational-technical management of a multiservice network segment in crisis situations, which allows to reduce the share of lost applications by reducing the time required to determine the increase in the intensity of the proposed traffic, typical for various crisis situations, in the absence of direct influence of destabilizing factors on the communication network .

The objective of the invention is solved.the fact that the method of operational-technical management of a multiservice network segment in crisis situations, which consists in setting the number of application flows for allocation of a channel resource n, the intensity of the proposed traffic of the k-th application flow a_k, different requirements for the quality of service for requests of the kth stream π_{k tr}, the number of units of the line resource needed to serve one request of the k-th stream b_k. Remember the number of application flows for the allocation of the channel resource n, the intensity of the proposed traffic of the k-th application flow a_k, different requirements for the quality of service for requests of the kth stream π_{k tr}, the number of units of the line resource needed to serve one request of the k-th stream b_k. Estimate the required minimum amount of channel resource V, remember the required minimum amount of channel resource V. Form the estimated required minimum volume of channel resource V. Form the main and backup paths without disconnecting subscribers, monitor communication means, according to the inventionsupplemented by:set up many crisis situations S_w and statistics of proposed traffic intensities for each crisis situation a_{k, w st}. Remember many crisis situations S_w and statistics of proposed traffic intensities a_{k, w st} for every crisis situation. Estimate the required minimum amount of channel resource V_w for each crisis situation, remember the required minimum amount of channel resource V_w for every crisis situation. Determine the presence of a crisis situation, if the occurrence of a crisis situation is detected, determine the type of crisis situation S_w and the corresponding value of V_wcompare the amount of channel resource V available in the network with the value of V_w for the identified crisis situation, if the V value is less than the V value_wform the required minimum amount of channel resource V_wif a crisis situation is not identified or if the value of V is not less than the value of V_w, and also after the formation of the required minimum amount of channel resource V_w determine the presence of a command to terminate communication. In the presence of a command to terminate communications, the communication facilities are collapsed; in the absence of a command to terminate communications, the presence of a command to transfer the communication network to a functioning state in the absence of a crisis situation is determined. In the absence of a command to transfer the communication network to a functioning state in the absence of a crisis, they switch to monitoring the state of the main and backup paths without disconnecting subscribers. If there is a command to transfer the communication network to a functioning state in the absence of a crisis, they proceed to the formation of the required minimum amount of channel resource V.

A new set of essential features allows you to achieve the specified technical result by reducing the time required to determine the increase in the intensity of the proposed traffic, characteristic of various crisis situations in the absence of direct influence of destabilizing factors on the communication network.

The analysis of the prior art made it possible to establish that there are no analogues that are characterized by a combination of features that are identical to all the features of the claimed method of operational-technical management of a multiservice network segment in crisis situations. 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 object from the prototype showed that they do not follow explicitly from the prior art. The prior art also did not reveal the popularity of the impact provided by the essential features of the claimed invention, the transformations on the achievement of the specified technical result. Therefore, the claimed invention meets the condition of patentability "inventive step".

"Industrial applicability" of the method of operational-technical management of a multiservice network segment in crisis situations is due to the presence of an element base, on the basis of which devices can be made that implement this method to achieve the purpose specified in the invention.

The claimed objects of the invention are illustrated by drawings, which show:

FIG. 1 is a flowchart of a sequence of actions that implement the method of operational-technical control of a multiservice network segment in crisis situations;

FIG. 2 - Graphs of the intensities of the proposed traffic in the communication network and the results of predicting the intensities of the proposed traffic in the prototype method;

FIG. 3 - Characteristics of the quality of service of different types of application flows during their joint servicing for the prototype method and the claimed method in a crisis situation in the time interval from t ₁ to t ₄ (graphical explanation for example).

Implementation of the claimed method is as follows (Fig. 1). Set (Fig. 1, block 1) and remember (Fig. 1, block 2) the initial data:

- the number of application flow for the allocation of the channel resource n, k = 1, 2, ..., n (the number of services that the multiservice network will provide);

- the intensity of the proposed traffic of the k-th stream of applications a _k , k = 1, 2, ..., n;

- different requirements for the quality of service of requests of the k-th stream π _{k tr} , where π _{k tr} is the required share of lost applications;

- the number of units of the line resource needed to service one application of the k-th stream b _k .

Set (Fig. 1, block 3) and remember (Fig. 1, block 4) the following initial data:

- statistics of the intensities of the proposed traffic for each crisis situation a _{k, w article} , where w = 1, 2, ..., s, s - the number of crisis situations;

- the set of crisis situations S _w .

Actions to determine the set of crisis situations are carried out at the stage of network planning, the values of the source data are obtained on the basis of research (I. Yamalov. Modeling of management and decision-making processes in emergency situations. - M .: Laboratory of basic knowledge. - 2012. - 288 p. . (p. 173-182)). The steps to determine the statistics of the intensities of the proposed traffic for each crisis situation are performed at the network planning stage, the values of the initial data are obtained by collecting the statistics of the intensities of the proposed traffic for each crisis in the multiservice network segment in the subject of the Russian Federation using hardware and software systems, for example Zabbix (www.Zabbix.com/documentation/1.8/en/manual) and their subsequent processing (Gmurman V.E. Probability theory and mathematical statistics: Textbook for universities / V.E. Gmurman. - 9th ed., Sr. - M .: Higher school, 2003. - 479 pp., Ill. (P. 216-219)). Thus, the statistical data on the intensities of the proposed traffic for each crisis situation a _{k, w st} are the upper boundaries of the confidence intervals (Gmurman V.E. Probability theory and mathematical statistics: Textbook for universities / V.E. Gmurman. - 9 -th ed., Sr. - M .: Higher school, 2003 .-- 479 s: ill. (p. 212)). After that, design documentation is developed. The initial data are stored by means of actions related to their input through the data input device and direct recording of the voltage values of electrical signals to a storage device, which can be a hard disk memory, flash card, random access memory, etc., and includes actions defined physics of processes in a specific storage device: recording, erasing, reading, processing, transmission, reception of voltage values of electrical signals. Then evaluate the required minimum amount of channel resource V (Fig. 1, block 5) according to the channel resource estimation algorithm described in the invention "Method (options) for monitoring and ensuring the required quality of customer service in multiservice networks": patent RU 2517327, 03/28/2014, and remember it (Fig. 1, block 6). After that, the necessary minimum amount of channel resource V _{w is} estimated taking into account the values of a _{k, w st} for each crisis situation according to the channel resource estimation algorithm described in the invention “Method (s) of monitoring and ensuring the required quality of customer service in multiservice networks”: RU patent 2517327, 03/28/2014, where V _w is the line speed expressed in channel units (Stepanov S.N. Fundamentals of teletraffic of multiservice networks. - M .: Eco-Trends, 2010, - 392 p. S. 210) and remember it ( Fig. 1, block 7). The storage is performed on a storage device, which can be the memory of a hard disk, a flash card, random access memory, etc., and includes actions determined by the physics of the processes in a specific storage device: recording, erasing, reading, processing, transmission, receiving voltage values electrical signals. Then form the required minimum amount of channel resource V (Fig. 1, block 8). The state of the main and backup paths is monitored without disconnecting subscribers (described in the invention: “Method (s) of monitoring and ensuring the required quality of customer service in multiservice networks”: patent RU 2517327, 03/28/2014) (Fig. 1, block 9). Then determine the presence of a crisis situation (Fig. 1, block 10). The process of determining the presence of a crisis includes the following material actions on material objects: an official making a decision on the existence of a crisis, for example, a person on duty shift, analyzes the information for information about crisis situations, with a view to identifying them, contained on official websites on the Internet of news agencies of the federal and regional level, by switching from site to site using a computer connected to the Internet equipped with input devices (keyboard and mouse type) and output (monitor), as well as reading the information contained on the sites. Also, the official analyzes the information on the availability of information about crisis situations, with the aim of identifying them, contained in the messages of official microblogging, news agencies; Ministry of the Russian Federation for Civil Defense, Emergencies and Disaster Management; Federal Security Service of the Russian Federation; Ministry of Internal Affairs of Russia, etc., for example, in the online service Twitter (www.twitter.com). For this purpose, the application of the corresponding online service is installed on a computer or smartphone. Moreover, the installation is performed on a storage device, which can be the memory of a hard disk, flash cards, etc., and includes actions determined by the physics of processes in a specific storage device: reading, processing, writing, erasing, transmitting, receiving voltage values electrical signals. Next, registration is carried out in the online service, which includes the introduction by the official from the input device of the required information. Then, actions are taken related to the subscription to receive messages from the aforementioned official microblogs, which include selecting the microblog and marking it as readable. After that, actions related to reading received messages and identifying information about crisis situations are carried out. To carry out the above actions, for example, a computer connected to the Internet, equipped with input devices (keyboard and mouse-type manipulator) and output devices (monitor) can be used. The decision on the existence of a crisis situation in the Subject of the Russian Federation is taken if information is found in the above sources on circumstances of an extraordinary, including terrorist, nature that are currently occurring in the Subject of the Russian Federation in which the official performs his duties. Moreover, if the occurrence of a crisis situation is revealed (Fig. 1, block 11), the type of crisis situation S _w and the value of V _w corresponding to the identified crisis situation are determined (Fig. 1, block 12). The process of determining the type of crisis situation consists in correlating the revealed information about extraordinary, including terrorist, circumstances that are currently taking place in the Subject of the Russian Federation, in which the official fulfills his duties with many crisis situations S _w , and choosing from this many specific the current situation in the Subject of the Russian Federation, according to its inherent classification features (I. Yamalov. Modeling of management and adoption processes Addressing in emergencies -. M .: Laboratory of basic knowledge -., 2012. - 288 p (with 173-182.)).. Then compare the volume of the channel resource V available in the network with the value of V _w for the identified crisis situation (Fig. 1, block 14), if the value of V is less than the value of V _w , form the required minimum amount of channel resource V _w (Fig. 1, block 17 ), if a crisis situation has not been identified, or if the value of V is not less than the value of V _w , and also after the formation of the necessary minimum amount of channel resource V _w , it is determined whether there is a command to terminate communication (Fig. 1, block 13), while if such the command is, roll up communications (described in the invented and: "Method (options) for monitoring and ensuring the required quality of customer service in multiservice networks": patent RU 2517327, 03/28/2014) (Fig. 1, block 16), if there is no such command, then determine if there is a command to switch the network communication to the state of functioning in the absence of a crisis situation (Fig. 1, block 15), if there is no such command, then they go on to monitor the state of the main and backup paths without disconnecting the subscribers (Fig. 1, block 9), if there is such a command, proceed to the formation of the required minimum amount of channel resource V (Fig. 1, block 8). The process of forming the required minimum amount of channel resource includes the following material actions on material objects: marching by forces and means, deployment of funds, commissioning and use as intended and (or) leasing of channels, throughputs of a unified telecommunication network, measurement of characteristics and parameters channels, throughputs of a unified telecommunication network, the intended use of channels, throughputs of a unified telecommunication network. The process of determining the commands to stop communication, as well as to transfer the communication network to a functioning state in the absence of a crisis, consists in analyzing the commands from the management bodies and identifies the commands in them to stop communication and to transfer the communication network to a functioning state in the absence of a crisis. Thus, if a command from the governing bodies reveals a command to terminate communication and (or) to transfer the communication network to a functioning state in the absence of a crisis situation, then it is considered that such a command exists, otherwise it does not.

The claimed method of operational-technical management of a multiservice network segment in crisis situations provides a reduction in the proportion of lost applications by reducing the time required to determine the increase in the intensity of the proposed traffic, typical for various crisis situations, in the absence of direct influence of destabilizing factors on the communication network.

The appropriateness of the developed method was checked by modeling the process of functioning of a multiservice network segment under the following conditions.

Let for the mode of functioning of a multiservice communication network in the subject of the Russian Federation under normal conditions (time intervals from 0 to t_one, from t_four and further) the following initial data are specified:n= 2,b _one = 1, b ₂ = 30,a _one = 6, a ₂ = 10, π _1tr = 0.05,π _2tr = 0.05, the planned line speed of the unified telecommunication network V_one= 455 (in which the requirements for the share of lost applications for the prototype method are fulfilled), the intensity of the proposed traffic of application flows in the communication network a_k and the results of predicting the intensity of the proposed traffic flows of applications a_{k ol}in the prototype method are changed as shown in FIG. 2. For the operating mode of the multiservice communication network in the Subject of the Russian Federation in a crisis situation (time interval from t_one to t_four) The following initial data are specified:from= 3, and_{1.1 tbsp}= 7.5, a_{2.1 tbsp}= 11.5, a_{1.2 tbsp}= 9.5, a_{2.2 tbsp}= 12.5, a_{1.3 tbsp}= 8, and_{2.3 tbsp}= 13, and the estimated minimum values of channel resource volumes for three crisis situations V_one= 492, V₂= 544, V₃= 548. At time t_one a crisis situation arises in the subject of the Russian Federation, which leads to an increase in the intensity of the proposed traffic from time t₂. At time t₃ a person making a decision about a crisis situation, detects a crisis situation, determines its type, for example, S₃, and the minimum necessary value of the channel resource V corresponding to this type of crisis situation₃which form. As a result of the crisis in the subject of the Russian Federation, the intensities of the proposed traffic changed and took the following values (maximum in the interval from t_one to t₂): but_one= 7.8, and₂= 12.7. Since time t_four in the subject of the Russian Federation, the crisis situation has ended and the communication network begins to function in normal conditions. However, due to the specifics of forecasting methods, the observation interval (Chuev Yu.V., Mikhailov Yu.B. Forecasting in military affairs. M., Military Publishing House, 1975 - 279 pp. (P. 8-14)) may correspond (or be larger ) the operating time interval of the multiservice communication network in a crisis situation. In this case, the forecast values will be received belatedly when the crisis situation is already over, and the increase in the intensity of the proposed traffic will not be taken into account in the conditions of the ongoing crisis situation on the lead-time interval. At time t₅ the person making the decision about the existence of a crisis determines the team from the management bodies to transfer the communication network to a functioning state in the absence of a crisis. At time t₆ the intensity of the proposed traffic returns to the values of the communication network in normal conditions.

We estimate the parameters of the quality of service (the share of lost applications) for the prototype method and for the proposed method in the time interval from t_one to t_four for the maximum intensities of the proposed traffic (a_one= 7.8, and₂= 12.7).

The simulation results and characteristics of the quality of service of different types of application flows during their joint servicing for the prototype method and the claimed method in the time interval from t_one to t_four are shown in FIG. 3. The results of the calculations are obtained by the authors based on a PC program in Mathcad.

Thus, the difference between the share of lost applications for the prototype method and the proposed method in the time interval from t_one to t_four calculated from the below expressions. The difference between the share of lost orders for each stream separately in the time interval from t_one to t_four:

Δπ _{1 t1-t4} = 0.011-5.282⋅10 ^-3 = 0.005718,

Δπ _{2 t1-t4} = 0.133-0.044 = 0.089.

The total difference between the share of lost applications in the time interval from t ₁ to t ₄ :

Δπ _{total t1-t4} = 0.005718 + 0.089 = 0.094718.

The total difference between the share of lost applications in the considered period of time, expressed as a percentage:

Δπ _{total t1-t4} = 0.094718⋅100% ≈9.5%.

From the above data it follows that after applying the inventive method, the percentage of lost applications decreased by 9.5%. Also, modeling was carried out for other initial data, the results of the experiments were averaged, and for the claimed method, the percentage of lost applications compared to the prototype method decreased in the range from 7.2% to 14.5%.

The given example illustrates the effect of the application of the method of operational-technical control of a multiservice network segment in crisis situations. Thus, the claimed technical result is achieved.

Claims (1)

A method of operational and technical management of a multiservice network segment in crisis situations, which consists in setting the number of application flows for allocation of a channel resource n, the intensity of the proposed traffic of the k-th application flow a _k , different requirements for the quality of service for applications of the k-th flow π _{k tr} , the number of units of the line resource needed to serve one request of the k-th stream b _k , remember the number of application flows for allocation of the channel resource n, the intensity of the proposed traffic of the k-th application flow a _k , different requirements According to the quality of service of requests of the k-th stream π _{k tr} , the number of units of the line resource needed to service one request of the k-th stream b _k , estimate the required minimum amount of channel resource V, remember the required minimum amount of channel resource V, form the estimated necessary minimum channel resource volume V, monitor the condition of the primary and backup paths without disconnecting the subscriber connection rolling means, characterized in that the first set plurality of crises S _w and statistics and intensities offered traffic for each critical situation a _{k, w v,} storing a plurality of crises S _w and statistics intensities proposed a _{k traffic, w v} for each crisis situation estimate the required minimum amount of channel resource V _w for every crisis situation, storing the desired the minimum amount of channel resource V _w for every crisis situation, determine the presence crisis situation if the detected occurrence of a crisis situation, determine the type of a crisis situation, and S _w sootvets vuyuschee its value V _w, compared to the amount of channel resource V, available in the network, with the value V _w to identify the crisis situation if the value V is less than the value V _w, form a necessary minimum amount of channel resource V _w, if the critical situation is not detected or if the V not lower than the value V _w, as well as after formation of the necessary channel resource minimum volume V _w determine the presence command to terminate communication, if the command to terminate communication roll communications, in the absence of commands to END Communication determines the presence of a command to transfer the communication network to a functioning state in the absence of a crisis, if there is no command to transfer the communication network to a functioning state in the absence of a crisis, they go on to monitor the state of the main and backup paths without disconnecting subscribers, if there is a command to switch the communication network in a state of functioning in the absence of a crisis, they proceed to the formation of the required minimum amount of channel resource V.

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