RU2618191C1 - System of traffic transmitting in multiservice communicational networks - Google Patents

Abstract

FIELD: radio engineering, communication.

SUBSTANCE: traffic system in multiservice communication networks used to connect multiple user terminals to a single transmission channel, estimates the required minimum amount of channel resource and connects the required minimum number of digital subscriber lines to meet the requirements on quality of service of calls based on information about the services and options information flows, as well as on emerging channel resource failures.

EFFECT: more efficient use of the channel resource.

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Description

The invention relates to communication technology, namely to multiservice networks, and is intended for use in the construction of multiservice communication networks.

For multiservice networks, one of the most important problems is to increase the efficiency of using a channel resource (Clustering information flows to increase the efficiency of occupying a channel resource in multiservice networks // Elektrosvyaz. - 2010. - No. 11. P. 22-25). In this regard, it seems relevant to increase the efficiency of the use of channel resources.

A multiservice network is a communication network constructed in accordance with the concept of the next generation communication network and providing an unlimited range of services (Conceptual provisions for the construction of multiservice networks at the BCC of Russia / the Ministry of Communications of Russia. - M.: DES of the Ministry of Communications of Russia, 2001 - 32 p. S. 4).

A channel resource is defined as an integer expression of the transmission capabilities of a communication line given to the temporary common possession of many users (Stepanov C.H. Fundamentals of teletraffic of multiservice networks. - M.: Eco-Trends, 2010, - 392 p. P. 94).

Communication lines - transmission lines, physical circuits and linear-cable communication facilities (Federal Law of the Russian Federation of July 7, 2003 No. 126-FZ “On Communications”).

Traffic - the load created by the flow of calls, messages and signals received by communications (Federal Law of the Russian Federation of July 7, 2003 No. 126-FZ “On Communications”).

Communication means - hardware and software used to generate, receive, process, store, transmit, deliver telecommunication messages or mail, as well as other hardware and software used to provide communication services or ensure the functioning of communication networks (Federal Law of the Russian Federation dated July 7, 2003 No. 126-FZ “ON COMMUNICATIONS”).

One of the ways to increase the efficiency of digital subscriber line information transmission systems is the approach consisting in the possibility of multiple pairing of several digital subscriber lines (DSL) into a single data transmission channel (Golden P. Fundamentals of DSL Technology / P. Golden, H. Dedieu, KS Jacobsen. - New York: Auerbach Publications, 2006 .-- 454 p.).

Known multi-pair broadband transmission system (US patent No. 6973170 from 6.12.2005), which is a high-speed data network over a multi-pair communication cable and containing a controller, a set of subscriber terminals and a central station. This data network can reduce the effect of crosstalk between communication lines.

The disadvantage of this analogue is the low efficiency of the use of the channel resource due to the fact that the linking of digital subscriber lines into a single data transmission channel is carried out without taking into account information about the services provided and the parameters of the information flows, as well as about emerging channel resource failures and the applied modulation and coding methods in all communication lines networked. Moreover, all digital subscriber lines are used to transmit information flows.

The closest in technical essence and functions performed analogue (prototype) to the claimed system is a communication system for digital subscriber lines (patent RU No. 118496 dated July 20, 2012), containing a controller, user terminal device, user vector processing unit, digital subscriber lines, block vector processing of a central station, a central station, a unit for constructing a system of basic functions. The controller is connected to the user terminal device, the user vector processing unit, the vector processing unit of the central station and the central station, and the user terminal device is connected to the user vector processing unit, while the user vector processing unit is connected to all digital subscriber lines that are connected to the vector processing unit of the central station, and the vector processing unit of the central station is connected to the central station, wherein the unit for constructing the system of basic functions is connected to the user vector processing unit and the vector processing unit of the central station.

With such a combination of the described elements and links, an increase in noise immunity is achieved by choosing the basic function systems used in modulation / demodulation, taking into account a priori information on the applied coding and modulation methods in all digital subscriber lines and depending on the characteristics of the communication channel formed by the set of L digital subscriber lines, each of which combines N subchannels.

However, the prototype has disadvantages: the low efficiency of the use of the channel resource due to the fact that the linking of digital subscriber lines into a single data channel occurs without taking into account information about the services provided and the parameters of the information flows, as well as about the occurring failures of the channel resource, it is not possible to connect several user terminals to a single transmission channel. Moreover, all digital subscriber lines are used to transmit information flows.

The objective of the invention is to develop a system for transmitting traffic in multiservice communication networks, which improves the efficiency of the use of channel resources by connecting several user end devices to a single transmission channel, estimating the required minimum amount of channel resource and connecting the required minimum number of digital subscriber lines to ensure quality of service requirements calls taking into account information about the services provided and information parameters fluxes, as well as on emerging channel resource failures.

The quality of call service is estimated by the probability of loss of applications (Stepanov C.H. Fundamentals of teletraffic of multiservice networks. - M.: Eco-Trends, 2010, - 392 p. P. 81).

This problem is solved in that a traffic transmission system in multiservice communication networks comprising a controller, a user terminal device, a user vector processing unit, digital subscriber lines, a vector processing unit of a central station, a central station, a unit for constructing a system of basic functions, while the controller is connected to a user terminal device, a user vector processing unit, a vector processing unit of a central station and a central station, a system building block we basic functions are connected to the user vector processing unit and the vector processing unit of the central station, according to the invention is supplemented by: u-1 user terminal devices, user multiplexer, user demultiplexer, central station multiplexer, central station demultiplexer, first switching unit, second switching unit and unit building a communication line, while the controller is connected to a communication line building unit, a user multiplexer, by the calling demultiplexer, u-1 user terminal devices, the central station multiplexer, the central station demultiplexer, the outputs of the user terminal devices are connected to the inputs of the user multiplexer, so that the output of the first user terminal device is connected to the first input of the user multiplexer, the output of the u-th user terminal device is connected with the u-th input of the user multiplexer, the output of the user multiplexer is connected n with the input of the user vector processing unit, and the user vector processing unit is connected to the first switching unit, digital subscriber lines are connected to the first switching unit and the second switching unit, the communication line building unit is connected to the user vector processing unit, the vector processing unit of the central station, the first a switching unit, a building block system of basic functions and a second switching unit, while the second switching unit is connected to the vector processing unit central of the second station, the input of the central station demultiplexer is connected to the output of the central station vector processing unit, and the outputs of the central station demultiplexer are connected to the inputs of the central station, the inputs of the central station multiplexer are connected to the outputs of the central station, and the output of the central station multiplexer is connected to the input of the central station vector processing unit , the input of the user demultiplexer is connected to the output of the user vector processing unit, and the outputs of the user demultiplexer the ultiplexer is connected to the inputs of the user terminal devices, the first output of the user demultiplexer is connected to the input of the first user terminal device, and the u-th output of the user demultiplexer is connected to the input of the u-th user terminal device.

A new set of essential features allows us to solve the problem of the invention by connecting several user end devices to a single transmission channel, estimating the required minimum amount of channel resource and connecting the required minimum number of digital subscriber lines to meet the requirements for call service quality, taking into account information about the services provided and information parameters streams, as well as emerging channel resource failures.

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 traffic transmission system in multiservice communication networks. 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".

The "industrial applicability" of a traffic transmission system in multiservice communication networks is due to the presence of an element base, on the basis of which devices that implement this invention can be made to achieve the purpose specified in the invention.

The claimed device is illustrated by drawings, which show:

FIG. 1 is a general block diagram of a traffic transmission system in multiservice communication networks;

FIG. 2 - diagram of the algorithm of the claimed device;

FIG. 3 is a flow chart of a communication line building block when evaluating the required minimum amount of channel resource to provide requirements for call service quality;

FIG. 4 is a flow chart of a communication line building block when comparing the required minimum amount of channel resource with the speed of a single transmission channel formed by a set of digital subscriber lines.

The traffic transmission system in multiservice communication networks shown in FIG. 1 contains a controller 1.1, user terminals 1.2 ₁ -1.2 _u , a central station 1.3, a multiplexer for a central station 1.4, a user multiplexer 1.5, a demultiplexer for a central station 1.6, a user demultiplexer 1.7, a user vector processing unit 1.8, a first switching unit 1.9, digital subscriber units lines 1.10 ₁ -1.10 _Ν , the second switching unit 1.11, the vector processing unit of the central station 1.12, the building block of the basic function system 1.13, the building block of the communication line 1.14. In this case, the controller 1.1 is connected to all user terminal devices 1.2 ₁ -1.2 _u , the user vector processing unit 1.8, the vector processing unit of the central station 1.12, the central station 1.3, the communication line building block 1.14, the user multiplexer 1.5, the user demultiplexer 1.7, the multiplexer of the central station 1.4, the demultiplexer of the central station 1.6, the unit for constructing the system of basic functions 1.13 is connected to the user vector processing unit 1.8 and the vector processing unit In Central Station 1.12, outputs user terminals 1.2 -1.2 _{u 1} are connected to inputs of the multiplexer 1.5 user so that the output of the first user terminal 1.2 ₁ connected to a first input of multiplexer user 1.5, yield of u-user terminal connected to a 1.2 _u u- the input of the user multiplexer 1.5, while the output of the user multiplexer 1.5 is connected to the input of the user vector processing unit 1.8, and the user vector processing unit 1.8 is connected to the first switching unit 1.9, digital subscriber lines 1.10 ₁ -1.10 _{N are} connected to the first switching unit 1.9 and the second switching unit 1.11, the communication line building block 1.14 is connected to the user vector processing unit 1.8, the vector processing unit of the central station 1.12, the first block switching 1.9, a unit for constructing a system of basic functions 1.13, a second switching unit 1.11, while the second switching unit 1.11 is connected to the vector processing unit of the central station 1.12, the output of which is connected to the input of the demultiplexer the central station 1.6, the outputs of which are connected to the inputs of the central station 1.3, the inputs of the multiplexer of the central station 1.4 are connected to the outputs of the central station 1.3, and the output of the multiplexer of the central station 1.4 is connected to the input of the vector processing unit of the central station 1.12, the input of the user demultiplexer 1.7 is connected to the output of the user block 1.8 vector processing, and outputs the user demultiplexer 1.7 are connected to inputs of user terminal devices ₁ 1.2 -1.2 _u, wherein the first output Users 1.7 lskogo demultiplexer coupled to an input of the first user terminal 1.2 _1, and u-th user demultiplexer output 1.7 connected to the input of the u-the user terminal device 1.2 _u.

The controller 1.1 is designed to control the process of transmitting information in the system, can be performed on the basis of signal microcontrollers 1892ВМ4Я (Domestic three-core signal microcontrollers with a capacity of 1.5 GFLOPS // T. Solokhina et al. - Electronic components. - 2006. - No. 6. - S. 73-78).

User terminals 1.2 ₁ -1.2 _u designed for processing, transfer and storage of user data, are well-known devices, for example, a personal computer, described in the book (VL Broido, OP Il'ina Computer Architecture and systems - SPb.. .: Peter, 2006.S. 116-127).

Central Station 1.3 is a well-known device described, for example, in the book (Golden P. Fundamentals of DSL Technology / P. Golden, H. Dedieu, K.S. Jacobsen. - New York: Auerbach Publications, 2006. P. 127-129).

The multiplexer of the central station 1.4 is a well-known device described, for example, in the book (M.H. Jones, "Electronics, a practical course." - M .: Postmarket, 1999. S. 418-420).

The user multiplexer 1.5 is a well-known device described, for example, in the book (M.H. Jones “Electronics, a practical course.” - M .: Postmarket, 1999. P. 418-420).

The demultiplexer of the central station 1.6 is a well-known device described, for example, in the book (M.H. Jones “Electronics, a practical course.” - M .: Postmarket, 1999. S. 418-420).

The user demultiplexer 1.7 is a well-known device described, for example, in the book (M.H. Jones “Electronics, a practical course.” - M .: Postmarket, 1999. P. 418-420).

The user vector processing unit 1.8 and the vector processing unit of the central station 1.12 are designed to increase the transmission speed due to the joint processing of signals transmitted on all digital subscriber lines 1.10 ₁ -1.10 _N , can be performed on the basis of signal microcontrollers 1892ВМ4Я and operate in accordance with the algorithms, described in the article (Vectored Transmission for Digital Subscriber Line Systems // G. Ginis, J. Cioffi. - IEEE Journal on selected areas in communications, Vol. 20, No. 5, June 2002. P. 1085-1093).

The first switching unit 1.9 is a known device designed to connect the minimum required number of digital subscriber lines to a user vector processing unit, described, for example, in the book (A. Abilov, A.V. Communication Networks and Switching Systems. - Izhevsk: IzhGTU Publishing House, 2002 S. 249-257).

Digital Subscriber Lines ₁ 1.10 -1.10 _N provide transmission signals from the user vector processing unit 1.8 to the vector processing unit of the central station and back to 1.12 and described in the book (Golden P. Fundamentals of DSL Technology / P. Golden, H. Dedieu, KS Jacobsen. - New York: Auerbach Publications, 2006. P. 132-143).

The second switching unit 1.11 is a known device designed to connect the minimum required number of digital subscriber lines to the vector processing unit of the central station, described, for example, in the book (A. Abilov, A.V. Communication Networks and Switching Systems. - Izhevsk: IzhGTU Publishing House, 2002.S. 249-257).

The basic function system building block 1.13 is designed to form Q _mDFT and Q _{mIDFT matrices} , can be performed on the basis of signal microcontrollers 1892ВМ4Я and works in accordance with the algorithm presented in patent RU No. 118496 dated July 20, 2012.

The communication line building block 1.14 is a well-known device: for example, a personal computer described in the book (V. Broydo, O. Ilyina. Computer and system architecture. - St. Petersburg: Peter, 2009. - 720 s). It is intended for estimating the required minimum amount of channel resource based on information about the services provided and the parameters of information flows, as well as emerging channel resource failures, for comparing the required minimum amount of channel resource with the speed of a single transmission channel formed by a set of digital subscriber lines, and determining the necessary minimum number of digital subscriber lines. It operates in accordance with the algorithms shown in FIG. 3 and FIG. four.

The inventive device operates as follows (Fig. 2).

и передают оцененные значения в блок построения линии связи 1.14. После оценивания характеристик подключенных цифровых абонентских линий пользовательский блок векторной обработки 1.8 и блок векторной обработки центральной станции 1.12 подают запросы в блок построения системы базисных функций 1.13, который определяет системы базисных функций на входе и выходе линий связи, формирует матрицы Q_mDFT и Q_mIDFT, передает полученные матрицы в пользовательский блок векторной обработки 1.8, блок векторной обработки центральной станции 1.12 и в блок построения линии связи 1.14. Блок построения линии связи 1.14 сравнивает полученное при оценивании значение необходимого минимального объема канального ресурса со скоростью единого канала передачи и определяет необходимое минимальное количество цифровых абонентских линий в соответствии с алгоритмом, представленным на фиг. 4. Если скорости единого канала передачи недостаточно, после подключения еще одной ЦАЛ предыдущие действия с момента, когда пользовательский блок векторной обработки 1.8 и блок векторной обработки центральной станции 1.12 по команде контроллера 1.1 обмениваются испытательными сигналами по подключенным цифровым абонентским линиям, повторяются до тех пор, пока не будет найдено необходимое минимальное количество цифровых абонентских линий или пока не будет выдано сообщение о нехватке ЦАЛ. Таким образом, процедура выбора минимального количества цифровых абонентских линий в зависимости от предоставляемых услуг и параметров информационных потоков, а так же от возникающих отказов канального ресурса закончена.Before starting a communication session, the communication line building block 1.14 estimates the necessary minimum amount of channel resource in order to meet the call service quality requirements in accordance with the algorithm presented in FIG. 3, after which it sends signals to the first switching unit 1.9 and the second switching unit 1.11 about connecting the first digital subscriber line 1.10 ₁ to the user vector processing unit 1.8 and the vector processing unit of the central station 1.12, and also sends a signal to controller 1.1 about the completion of the evaluation. Then, the user vector processing unit 1.8 and the vector processing unit of the central station 1.12, at the command of controller 1.1, exchange test signals via connected digital subscriber lines, as well as send test signals to the communication line building block 1.14 and evaluate the impulse response values h _{a, b} , dispersions noise

and transmit the estimated values to the block constructing the communication line 1.14. After evaluating the characteristics of the connected digital subscriber lines, the user vector processing unit 1.8 and the vector processing unit of the central station 1.12 submit requests to the building block of the basic function system 1.13, which determines the system of basic functions at the input and output of the communication lines, generates matrices Q _mDFT and Q _mIDFT , transmits the resulting matrices to the user vector processing unit 1.8, the vector processing unit of the central station 1.12 and to the communication line building block 1.14. The communication line building block 1.14 compares the value of the required minimum amount of channel resource obtained during evaluation with the speed of a single transmission channel and determines the required minimum number of digital subscriber lines in accordance with the algorithm shown in FIG. 4. If the speed of a single transmission channel is not enough, after connecting another DSL, the previous steps from the moment when the user vector processing unit 1.8 and the vector processing unit of the central station 1.12, at the command of controller 1.1 exchange test signals via connected digital subscriber lines, are repeated until until the required minimum number of digital subscriber lines is found or until a message about the lack of digital telephony is displayed. Thus, the procedure for selecting the minimum number of digital subscriber lines depending on the services provided and the parameters of the information flows, as well as on the occurring failures of the channel resource is completed.

Next, a communication session is carried out directly. User terminals 1.2 ₁ -1.2 _u at the command of controller 1.1 transmit information signals from users to user multiplexer 1.5, user multiplexer 1.5 at the command of controller 1.1 transmits information signals to user vector processing block 1.8, where preliminary vector processing of all signals for transmission at the minimum the number of digital subscriber lines. The user vector processing unit 1.8 at the command of the controller 1.1 transmits the converted signals to the selected minimum number of digital subscriber lines, after passing through which the signals enter the vector processing unit of the central station 1.12. At the command of controller 1.1, the vector processing unit of the central station 2.12 carries out the vector post-processing of the received signals and transmits the converted signals to the demultiplexer of the central station 1.6, and the demultiplexer of the central station 1.6 transfers the converted signals to the central station 1.3 at the command of the controller 1.1. Thus, the process of transmitting information from user terminals 1.2 ₁ -1.2 _u to the central station 1.3. A communication session in the opposite direction occurs in the reverse order and can be carried out simultaneously.

The operation algorithm of the communication line building block when evaluating the required minimum amount of channel resource, shown in FIG. 3 and allowing one to estimate the required minimum amount of channel resource based on information about the services provided and the parameters of information flows, as well as about emerging channel resource failures, includes the following actions.

In block 1 set and record the following source data:

- n - the number of threads of requests for allocation of channel resource;

-N _k is the total number of sources forming the k-th stream, k = 1, 2, ..., n;

- b _k is the number of line resource units needed to serve one request of the k-th stream, k = 1, 2, ..., n (Stepanov CH Fundamentals of teletraffic of multiservice networks. - M .: Eco-Trends, 2010. P. 108) ;

- h is the number of channel resource units occupied by one failure;

- ω is the recovery rate of h units of the channel resource;

- ξ is the failure rate;

- μ _k is the call service intensity for each of the flows;

- requirements for the quality of service of requests (calls) of the k-th stream π _{k tr} , where π _{k tr} is the required share of lost (probability of loss) of requests (calls) (Stepanov CH Fundamentals of teletraffic of multiservice networks. - M .: Eco-Trends, 2010 , - 392 p. S. 111);

- α _k is the intensity of the call flow of the k-th type from one free source.

In block 2, the following parameters are calculated:

The rate of incoming failures - A, expressed in erlangs, is calculated by the formula (AE Mironov, AN Pereverzev. Model of a multiservice network link with limited channel resource reliability // Information Systems and Technologies, 2013. - No. 2. - С 87-93. P. 89).

The intensity of the incoming load of the k-th flow - Z _k , expressed in erlangs, is calculated according to the formula derived according to the arguments set forth in the book (Stepanov S.N. Basics of teletraffic of multiservice networks. - M .: Eko-Trends, 2010, - 392 s . S. 154-160)

The intensity of the incoming load of the k-th flow from a single source - β _k , expressed in erlangs, is calculated by the formula derived according to the reasoning set forth in the book (Stepanov S.N. Basics of teletraffic of multiservice networks. - M .: Eco-Trends, 2010, - 392 p. S. 154-160)

In block 3, the values of the unnormalized probability of the system being in the zero (free) state are equated to unity

P (0) = 1,

P _O (0) = 1,

and the average number of messages of the k-th information stream being transmitted in the zero (free) state, to zero

M _k (0) = 0.

In block 4, the value of the volume of the channel resource i = 1 is set, changing sequentially from 1 to V, where V is the required minimum amount of the channel resource, at which the requirements for ensuring the quality of call service are met taking into account information about the services provided and the parameters of information flows, and as for the arising failures of the channel resource. The transition from the volume of the channel resource, expressed in units of the channel resource, to the bit rate / s is shown in the book (Stepanov S.N. Fundamentals of the teletraffic of multiservice networks. - M .: Eko-Trends, 2010. P. 94-96).

In block 5, a cycle is performed for each of the information flows from 1 to n.

In block 6, we compare the condition ib _k ≥0 for the indicator function I (ib _k ≥0) (Stepanov S.N. Fundamentals of the teletraffic of multiservice networks. - M .: Eco-Trends, 2010. P. 113). If the condition is met, then in block 7, the value of the indicator function is assigned a value equal to one, I = 1, if the condition is not met, in block 8, the value of the indicator function is assigned the value zero, I = 0.

In block 9, the value of M _k (i) is determined (Stepanov S.N. Fundamentals of teletraffic of multiservice networks. - M.: Eco-Trends, 2010. P. 163), by the expression:

where I (•) is an indicator function, which is determined by the following relation

In block 10, the unnormalized probability value P (i) is calculated (Stepanov S.N. Fundamentals of teletraffic of multiservice networks. - M.: Eco-Trends, 2010, p. 163) using the relation:

In block 11, the variable C is assigned the value i.

In block 12, a cycle is performed for d - the number of serviceable units of the channel resource from (C-1) to 0.

In block 13, the condition С-d-h≥0 is compared for the indicator function I (С-d-h≥0). If the condition is met, then in block 14, the value of the indicator function is assigned a value equal to one, I = 1, if the condition is not met, in block 15, the value of the indicator function is assigned the value zero, I = 0.

In block 16 determine the value of P _o (C-d) (A.E. Mironov, A.N. Pereverzev Link model of a multiservice network with limited channel resource reliability // Information Systems and Technologies, 2013. - No. 2. - P. 87 -93. S. 90), by expression:

where I (•) is an indicator function, which is determined by the following relation

In block 17, the value of the normalization constant N _{o is} calculated (A.E. Mironov, A.N. Pereverzev, Model of a multiservice network link with limited channel resource reliability // Information Systems and Technologies, 2013. - No. 2. - P. 87-93. S. 90), in expression:

where P _o (j) = P _o (Cd), j = 1, 2, ..., C; d = C-1, C-2, ..., 0.

In block 18, the probability of finding j faulty channel units p _o (j) is calculated (AE Mironov, AN Pereverzev Model of a multiservice network link with limited channel resource reliability // Information Systems and Technologies, 2013. - No. 2. - S. 87-93. S. 90), using the ratio:

In block 19, the value of the fraction of lost requests (probability of loss of calls) π _k for each flow is calculated by the formula:

In block 20, the values of the obtained loss probabilities π _{k are} compared with the required values of π _{k tr} , if the condition π _k > π _{k tr} is satisfied, then the value of the required channel resource is increased by unity i = i + 1 and the calculations are repeated, if the condition is not satisfied, then output the value of V, the algorithm is finished.

The operation algorithm of the communication line building block when comparing the required minimum amount of channel resource with the speed of a single transmission channel formed by a set of digital subscriber lines, shown in FIG. 4, is intended to compare the value obtained when evaluating the required minimum amount of channel resource with the speed of a single transmission channel and determine the required minimum number of digital subscriber lines and includes the following steps.

In block 1 enter the number of DAL - Y.

In block 2, the variable X is assigned a value equal to one, X = 1. The variable X shows the number of connected DSLs that are used for linking into a single transmission channel.

In block 3 determine the speed of issuing samples of the test signal according to the formula ν = L / t, where L is the number of samples in the test signal; t is the test signal transmission time in seconds.

и сформированных матриц Q_mDFT и Q_mIDFT по формуле, представленной в статье (Рыболовлев Д.А. Математическая модель системы передачи информации, учитывающая взаимное влияние электропроводных линий связи / Д.А. Рыболовлев // Фундаментальные и прикладные проблемы техники и технологии. - 2012. - №2. - С. 126-135), которая имеет следующий вид:In block 4, the signal-to-noise ratio is determined based on the estimated values of the impulse responses h _{a, b} , noise variances

and the formed matrices Q _mDFT and Q _mIDFT according to the formula presented in the article (Rybolovlev D.A. Mathematical model of an information transmission system that takes into account the mutual influence of electrically conductive communication lines / D.A. Rybolovlev // Fundamental and applied problems of engineering and technology. - 2012 . - No. 2. - S. 126-135), which has the following form:

In block 5, the speed of a single transmission channel is determined by the formula presented in the book (Theory of electrical communications: textbook for high schools / A.G. Zyuko, D.D. Klovsky, V.I. Korzhik, M.V. Nazarov; ed. D. D. Klovsky. - M.: Radio and Communications, 1999. - 432 p. S. 250), which has the following form:

where ν is the speed of the issuance of samples of the test signal, defined in block 3;

- отношение сигнал/шум, определенное в блоке 4.

- the signal-to-noise ratio defined in block 4.

In block 6, the sufficiency condition for the speed of a single transmission channel, V> F, is checked. If the condition is satisfied, go to block 7, if the condition is not satisfied, the algorithm is completed.

In block 7, check for the presence of not connected DSLs, X <Y. If the condition is met, go to block 8, if the condition is not met, go to block 9.

In block 8, a signal is sent to the first switching unit and the second switching unit to connect another DSC (at this step, connecting another DSC).

In block 9, messages about the lack of the DSL are displayed. The completion of the algorithm.

In block 10, increase the variable X by one, X = X + 1, and go to block 3.

Thus, with such a combination of essential features, an increase in the efficiency of using a channel resource is provided. At the same time, several user terminal devices are connected to a single transmission channel and information on the services provided and information flow parameters, as well as on emerging channel resource failures, is taken into account, which leads to an increase in the efficiency of channel resource use.

The procedure for calculating the efficiency of using a channel resource by connecting several user end devices to a single transmission channel is presented in the book (Stepanov S.N. Fundamentals of teletraffic of multiservice networks. - M .: Eko-Trends, 2010. P. 38-43).

The calculation of efficiency was carried out by modeling the functioning of a multiservice network with the following initial data: n = 5, Ν ₁ = N ₂ = N ₃ = N ₄ = N ₅ = 5, b ₁ = 1, b ₂ = 2, b ₃ = 5, ₄ b = 10, b = 12, _5, α ₁ = 0,2, α ₂ = 0,2, α ₃ = 0,5, α ₄ = 0,6, α ₅ = 0,1, μ ₁ = μ ₂ = μ ₃ = μ ₄ = μ ₅ = 1, π _1tr = 0.052, π _2tr = 0.02, π _3tr = 0.04, π _4tr = 0.01, π _5tr = 0.052, h = 1, ξ = 0 , 01, ω = 1, Υ = 4. Let the DSL provide a speed of 2.048 Mbps (Telecommunication systems and networks: A training manual. In 3 volumes. Volume 3. - Multiservice networks / V.V. Velichko, E.A. Subbotin, V.P. Shuvalov, A.F. Yaroslavtsev; under the editorship of Professor V.P. Shuvalov. - M .: Hotline-Telecom, 2005. P.245). The unit of the channel resource is taken equal to 64 Kbps (Stepanov S.N. Fundamentals of teletraffic of multiservice networks. - M .: Eco-Trends, 2010. From 95-96), then the speed of a single transmission channel, expressed in units of the channel resource (ECR) , will be equal to 4⋅2048 / 64 = 128 ЕКР. Then, for the prototype device, the loss probabilities calculated according to the well-known algorithm presented in the book (Stepanov S.N. Fundamentals of teletraffic of multiservice networks. - M .: Eco-Trends, 2010. P. 163-167) have the following values π ₁ = 2.35⋅10 ^-9 , π ₂ = 5.818⋅10 ^-9 , π ₃ = 1.053⋅10 ^-8 , π ₄ = 1.4⋅10 ^-8 , π ₅ = 5.786⋅10 ^-8 , and the utilization rate, characterizing the efficiency of using a channel resource (Clustering of information flows to increase the efficiency of occupying a channel resource in multiservice networks // Electrosvyaz. - 2010. - No. 11. P. 22-25) and the definition ny of the following formula:

will be equal to 0.402.

For the present invention, as a result of the operation of the algorithm shown in FIG. 3, the value of the required minimum amount of channel resource V = 74 EKR, and as a result of the operation of the algorithm shown in FIG. 4, 3 DSLs will be connected, which is 96 ECR. The probabilities of losses at 96 ЕКР have the following values π ₁ = 2,083⋅10 ^-5 , π ₂ = 3,955⋅10 ^-5 , π ₃ = 9,858⋅10 ^-5 , π ₄ = 1,637⋅10 ^-4 , π ₅ = 5,029⋅10 ^-4 . Then the channel resource utilization coefficient, determined by the formula:

will be equal to 0.536.

The efficiency of using the channel resource when applying the invention is equal to:

The results of the calculations are obtained by the authors on the basis of a PC program in the Mathcad environment.

From the above data it follows that after applying the claimed invention, the efficiency of using the channel resource increased by 25%.

The examples given illustrate the effect of the use of a traffic transmission system in multiservice communication networks. Thus, the problem of the invention is solved - increasing the efficiency of using the channel resource.

Claims (1)

A system for transmitting traffic in multiservice communication networks comprising a controller, a user terminal device, a user vector processing unit, digital subscriber lines, a vector processing unit of a central station, a central station, a basic function system construction unit, the controller being connected to a user terminal device, a user unit vector processing, the vector processing unit of the central station and the central station, the unit for constructing a system of basic functions connected with a user vector processing unit and a central station vector processing unit, characterized in that u-1 user terminal devices, a user multiplexer, a user demultiplexer, a central station multiplexer, a central station demultiplexer, a first switching unit, a second switching unit and a line building unit are additionally introduced communication, while the controller is connected to the communication line building unit, a user multiplexer, a user demultiplexer, u-1 p user terminal devices, the central station multiplexer, the central station demultiplexer, the outputs of the user terminal devices are connected to the inputs of the user multiplexer, so that the output of the first user terminal device is connected to the first input of the user multiplexer, the output of the u-th user terminal device is connected to the u-th input of the user multiplexer, the output of the user multiplexer is connected to the input of the user block processing, and the user vector processing unit is connected to the first switching unit, digital subscriber lines are connected to the first switching unit and the second switching unit, the communication line building unit is connected to the user vector processing unit, the vector processing unit of the central station, the first switching unit, the building unit system of basic functions and a second switching unit, while the second switching unit is connected to the vector processing unit of the central station, the input of the center demultiplexer of the central station is connected to the output of the vector processing unit of the central station, and the outputs of the central station demultiplexer are connected to the inputs of the central station, the inputs of the central station multiplexer are connected to the outputs of the central station, and the output of the central station multiplexer is connected to the input of the central station vector processing unit, the input of the user demultiplexer is connected with the output of the user vector processing unit, and the outputs of the user demultiplexer are connected to the inputs of the user user terminal devices, wherein the first output of the user demultiplexer is connected to the input of the first user terminal device, and the u-th output of the user demultiplexer is connected to the input of the u-th user terminal device.

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