Перегляд за автором "Yevsyeyeva, O."

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  • Зображення мініатюри
    Публікація
    Hierarchical Control Method for Hybrid Content Delivery Network
    (Publishing House of Lviv Polytechnic, 2014) Yevsyeyeva, O.; Khader, M. B.
    A hierarchical control method for hybrid content delivery network that integrates advantages of P2P and CDN architectures is offered. The method implies two layers where lower layer is associated to control traffic within P2P-network but upper layer is related to CDN. The method is based on a flow mathematical model which allows solving traffic control problem in optimal way. The model includes conditions to ensure required rate and delay and allows balancing of network and computing resources using by multipath routing and redistribution requests between content servers.
  • Зображення мініатюри
    Публікація
    Performance Analysis of Tensor Approach to Multipath QoS-based Routing
    (Publishing House of Lviv Polytechnic, 2014) Лемешко, О. В.; Yevsyeyeva, O.; Hailan, A. H.
    Tensor approach to multipath routing allows formulating analytical boundary conditions for ensuring required quality of service under multiple metrics (rate, average delay and packet loss probability) at same time. Numerical research results show implementation of the conditions allows decreasing end-to-end delay, increasing delivery rate, minimizing packet jitter caused by the multiple paths, increasing the probability of ensuring QoS-requirements.
  • Зображення мініатюри
    Публікація
    Reliability tensor model of telecommunication network with RED
    (Radioelectronics & Informatics, 2012) Лемешко, О. В.; Yevsyeyeva, O.; Garkusha, S.
    If the user is buying a telecommunications service, he expects from the provider of a certain quality of servicing. So the delivery of telecommunications traffic must be realized with the specified quality requirements. As a rule the requirements are related to traffic rate, average delay, packet jitter, and the reliability (delivery or loss probability). The main way to meet its is finding appropriate path or multipath along which these requirements are satisfied. The multipath case is related to traffic distribution task. In this article we proposed tensor model for telecommunication network with RED and formulated analytical condition for QoS-ensuring. Satisfaction reliability of the condition guarantees that rate and requirements are be achieved at the same time. The formulated condition has invariant form that doesn’t depend on AQM mechanism type.