Investigation of preemptive priority single-server queueing systems with peaked traffic flows
Seferin Mirtchev

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In this article, a model of single-server preemptive priority queueing systems with a peaked arrival process, generally distributed service time and infinite waiting position is described by using the Polya distribution to ...  read more

The old news in 2019 in infrastructure and network legislation
Kamena Tsaneva, Darina Stoyanova

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The article discusses old news in the Bulgarian 2019 infrastructure and network legislation.

Старите новости през 2019 в инфраструктурното и мрежовото законодателство.

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 ...  read more

Definitions for disruptive innovation in telecommunication technologies
Tsvetoslava Kyoseva

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Every industry at a given moment reaches its end of development, a tipping point where the saturation of the market by products, services and technologies is inevitable. This article analyzes the term innovation and its specific ...  read more

A ZigBee based sensor network for road traffic monitoring
Emil E. Vladkov

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ZigBee is a popular wireless networking protocol for building self-configuring sensor networks. It proves to be both reliable and cost-effective, which makes it a preferred choice for the design of a traffic counting and monitoring ...  read more

Speech quality dependence investigation from transmission channel characteristics and voice encoding methods
Snejana G. Pleshkova, Kalina Hr. Peeva

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This article examines the dependence of speech quality from transmission channel characteristics and speech encoding methods. As speech quality estimation is proposed to use the objective methods for quality control and evaluation ...  read more

Model of information security system based on distributed data transmission
Elitsa D. Gospodinova, Tashko A. Nikolov

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This paper presents a model of security system for protection of information, transmitted over wireless networks. The model is design for implementation in terminals, having more than one independent one from another radio ...  read more

Dynamic queue management of partial shared buffer with mixed priority for QoS guarantee in LTE uplink
Georgi Balabanov, Seferin Mirtchev

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The main objective of this article is to propose and evaluate solutions for QoS guarantee of voice and multimedia traffic at the radio uplink interface of LTE networks. A novel queue named a Dynamic queue management of Partial ...  read more

Improvement of the information services by using means of the IT infrastructure library
Mario Ivanov

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In the present paper, the focus is on the process of determining effective key indicators in ITIL (Information Technology Infrastructure Library), and is provided an overview of the most popular key performance indicators. ...  read more