Сучасні проблеми радіоелектроніки, телекомунікацій, комп'ютерної інженерії
Permanent URI for this communityhttps://ena.lpnu.ua/handle/ntb/13803
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Item Application of multi-layer graphs in the design of MPLS networks(Видавництво Львівської політехніки, 2012) Abdalla, Haidara; Ageyev, DmitryIt is suggested to use multi-layer graphs as a mathematical model in the design of MPLS networks. The application of this model makes it possible to design multi-service telecommunication systems simultaneously at several levels and to reduce the problem to the search of the minimum weight graph.Item Describing and modeling of video-on-demand service with the usage of multi-layer graph(Видавництво Львівської політехніки, 2012) Ageyev, Dmitry; Ignatenko, ArtemConsidered in this paper is the method of describing of telecommunications systems providing VoD service using multi-layer graph. The paper describes the relations between the structural elements at each hierarchical level of the multi-layer graph. Transfer of video is a resource consuming task, and it requires an optimal configuration of the studied system. The usage of the multi-layer graph makes it possible to consider the telecommunication system as a whole and avoid falling in the local optimums when solving optimization problems.Item NGN network planning according to criterion of provider’s maximum profit(Видавництво Львівської політехніки, 2010) Ageyev, DmitryMaximum profit of telecommunication provider criteria usage is offered for multiservice telecommunication systems design. In the given paper descripted mathematical model and problem definition for telecommunication system structure and parametrical synthesis.Item Wavelength assignment in design dwdm transport network using algorithm BCO-RWA(Видавництво Львівської політехніки, 2012) Ageyev, Dmitry; Pereverzev, AlexanderThe main problem in designing DWDM transport networks is the wavelength assignment of light paths. One way of solving this problem is to use the algorithm BCO-RWA. However, BCO-RWA has the following disadvantages: algorithm not solved the problem of choosing the location of the optical convector in the network; base algorithm ignores placement optical convector during calculating route selecting probability; base algorithm do not take into account the nonlinear four-wave mixing phenomenon. In this paper we present an algorithm which takes into account a number of disadvantages due to modifications introduced in the algorithm.