Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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ESTIMATION MODEL OF MODULAR STRUCTURES RELIABILITY OF THE N-VARIANT SOFTWARE SYSTEM ACCESS TO BROADBAND MULTIMEDIA SERVICES

Stupina А.А. 1 Melder M.I. 2 Nurgaleeva J.A. 2 Zolotarev A.V. 2 Vrhorubov А.I. 2
1 Siberial Federal University
2 Siberial State Aerospace University
The paper suggests estimation model of modular structures reliability of the N-variant software system access to broadband multimedia services. The СОТS-support concept of N-variant programming is offered. It ensures the availability of mathematical models to assess the reliability of the modules versions, that allows to get information about software reliability and cost. Let’s consider four basic types of models of software systems optimization reliability (including N-variant structures), with the limited cost resources usage. A V-2 model is a general one, which forms the optimum module structure of multifunctional (K-functions) N-variant software system with the redundancy introduction. Due to the limitation presence and, as we deal with the functions of the system, none of the methods proposed earlier, cannot be directly used for the tasks B-2 solving. In consequence of the target function nonlinearity the paper proposes the linearization method and numerical examples of the optimization problem of versions of modular N-variant software structures solving.