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This paper surveys a new and comprehensive concept of services assurance in distributed heterogeneous service-oriented systems. A vertical decomposition of the service delivery is proposed for these systems. The mathematical model of request transmission process is developed.
Paper is devoted to the research the requirements from different user groups to Telecommunications Network. Based on the proposed approach to creating a model of user requirements change to TN there has been developed expert system, the result of which is to solve the problem of forecasting, which is deciding on belonging to a particular class of network based on accumulated statistics Requirements...
The analysis of characteristics of nodes of the multiservice communication networks modelled by the G/G/1 systems when processing the modern traffic is the important technical task. In the assumption of independence of intervals of time between requests and independence of intervals of time of processing of the request in system the analysis of wait time of the request in queue can be realized on...
The results of development a mathematical model for transmission rate allocation downlink technology WiMAX. The novelty of the proposed model is possible preventive limit transmission rate allocated to the service flows of the user stations in the downlink by using the WiMAX technology linear or linear-quadratic objective function. Using the mathematical model is directed to allocation between subscriber...
This paper proposes an approach to solve the problem of LTE EPS network parametric synthesis taking into account self-similar properties of multiservice traffic. The problem is solved with the known source data such as network topology, traffic routes, statistical data on the demand for information and communication services. The article proposes the calculation expressions to determine the parameters...
The paper is devoted to solving the problem of developing new and improving existing methods of NFV technological solutions analysis on the earlier stages of developing process. A method of analysis functional and non functional requirements of NFV infrastructure realization is proposed. The proposed method bases on mathematical modelling approach. E-network is use as tool for NFV behavioural modelling...
Evaluation of network scalability, based on the concept of SDN, is an important task in the design of a new or expansion of existing network architecture. Therefore, different structures of management level were considered and the mathematical model of SDN network was built for these structures in the work. Structure components models of SDN network were considered: data level model, flow initiate...
The improvement of the scalability of routing decisions is quite relevant in modern telecommunication networks. In this regard, effective approach is associated with the implementation of hierarchical routing. This involves carrying out a structural and functional decomposition of the network, based on the introduction and supporting of multi-level routing decisions. However, the existing protocol...
The mathematical model of the process of communicating real time traffic in telecommunication network channel with commutation of packets, which is based on exponential distribution of the moments of starting communicating and duration of communicating real time streams, is set forth in the article. Using the pro-posed model allows researching, by virtue of imitation, the process of dynamic change...
This article considers the basic methods of telecommunication networks modelling, along with the relevant software tools. The expediency of using UNetLab, a new software product for simulation modelling, has been proven. This software is used for the creation and analysis of virtual laboratory-oriented experimental testing benches of telecommunication networks. The article formulates general basic...
The routing tensor model in the basis of interpolar paths and internal node pairs with the guarantees by the packet rate and end-to-end delay is presented. The research demonstrated that the guarantees is provided for all paths in realization of the routing tensor model. The use of specified coordinate system facilitates compliance with the requirements for the packet end-to-end delay, i.e. average...
The Gauss-Kristoffel method for numerical solving the integral Lindley equation is considered in the article. The algorithm of the mean length of the path and the buffer size for the network node represented as the queuing system (QS) type G/G/1 has been worked out. The algorithm is implemented in Matlab system. The results of the algorithm and the previous known analytical results are compared.
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