Chervenets V. Increasing the quality of streaming traffic transmission in multiservice networks.

The thesis is devoted to solving scientific and technical task of increasing the quality of service for streaming traffic in multiservice networks by improving the method of adaptive control over the node structural parameters and developing models of network device virtualization. A model and method to maintain the required quality of service parameters for information traffic based on virtualization technology of network device and adaptive management of the structural parameters of the node are proposed. The model of static and dynamic reconfiguration of computing resources of network node is developed. An analytical model of network virtualization of device parameters and mathematical representation of the quality of service flows in multiservice infrastructure with resource virtualization is proposed. Based on the developed model of software router with the ability to deploy virtual serving devices for a destination class, the research of service quality for streaming traffic is conducted. Based on the experiment in multiservice network, it was found out that the developed models and methods for dynamic network device virtualization providing the ability to designate the minimum amount of network resources to guarantee a given level of service quality and enables 25-30% increase in service quality of real-time streaming traffic with respect to delay and jitter.