Перегляд за автором "Yevsieieva, O."

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  • Зображення мініатюри
    Публікація
    Choosing of Optimal Cluster Size in WiMax Mesh Network Under Hierarchical Cross-Layer Routing
    (KHARKIV NATIONAL UNIVERSITY OF RADIO ELECTRONICS, 2015) Yevsieieva, O.; Essa Mohammed Al-Azzaw
    A rational compromise between scalability and performance of WiMax mesh wireless network can be reached by hierarchical cross-layer routing. The paper offers appropriate mathematical model in space of state. The model describes dynamics of clustered mesh wireless network and allows to decompose initial control task into routing and slot allocation inside clusters, and routing and slot allocation between clusters. Simulation results show that chosen cluster size affects network productivity and complexity of optimization problem, its optimal value depends on average distance between source and destination, network size and network connectivity
  • Зображення мініатюри
    Публікація
    Multipath Routing as a Tool for Energy Saving in Transport Software Defined Network
    (KHARKIV NATIONAL UNIVERSITY OF RADIO ELECTRONICS, 2015) Yevsieieva, O.; Ilyashenko, Ye.
    The most important features of software defined networks are related to resource virtualization and centralized optimal control that is fully programmatically realized. In turn it gives rise to development of mathematical model which allows to find the optimal solution. On the other hand important role in optimization process belongs to criterion of optimality (objective function). Taking into account global world trends the paper offers mathematical model of SDN-driven transport packet optical network that allows to optimize network resources according to energy saving criterion. It will be shown that multipath routing over virtualized IP-links leads to saving 10% of power consumption per every additionally used path.