Yanovsky M. Models and methods of information technology for the creation of adaptive wireless local area networks

Object - process of analyzing, creating and operating wireless local area networks (WLAN); goal - to provide the given QoS in WLAN according to energy consumption and number of access points (AP) based on network parameters adaptation; methods - principles of system analysis, set-theoretic methods and probabilistic description of information processes in computer networks, Markov processes theory with continuous-time and discrete states, methods for solving systems of differential equations with stiff coefficients, elements of information management process theory, methods of mathematical programming and multi-vector optimization, graph theory; results - implemented information technology for the creation of adaptive WLAN with adaptive APs, tool developed for the simulation of adaptive WLAN; novelty - a new adaptive model of WLAN with mobile APs is based on the dynamic parameters of the subscriber, taking into consideration the possibility of moving the AP this allows to find the characteristics of the network coverage map and to provide the required QoS according to regulatory requirements; an enhanced method for placing access points in adaptive WLANs, based on the integral parameter method, calculates the coverage for the subscribers' different density by taking into account their relative position; a developed model of adaptive WLAN availability considers the failure rate of embedded software APs as well as the required QoS in order to minimize the number of APs and increase the accuracy of reliability assessment; a method for the creation of an adaptive WLAN was developed, using the Pareto-optimal method as a selection technique for the placement of stationary and mobile APs, based on their functionality and reliability characteristics, as well as the placement of subscribers, thus the number of APs and level of microwave emission is reduced; implementation - in the State Enterprise "UCRF", State Scientific Production Enterprise "Kommunar Corporation", NAU "KhAI"; field of application - information technology