Kokoreva E.V., Shurygina K.I. —
Analysis of service quality indicators in a local positioning system based on ZigBee technology
// Software systems and computational methods. – 2020. – ¹ 4.
– P. 1 - 9.
DOI: 10.7256/2454-0714.2020.4.34456
URL: https://en.e-notabene.ru/itmag/article_34456.html
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Abstract: One of the topical areas of the digital economy is the development of services based on the use of systems for local positioning of objects. The article presents the results of analytical modeling of a positioning system built on the equipment of the IEEE 802.15.4 standard. The purpose of this study is to evaluate the efficiency of data transmission in a ZigBee network. As a modeling tool, the mathematical apparatus of queuing networks (CeMO) was selected, which has proven its effectiveness for calculating the characteristics of various infocommunication systems. The method of analysis of average values was chosen by the authors to assess the quality of service indicators due to its computational simplicity and the adequacy of the results obtained. The authors have developed a structural diagram of the investigated positioning system. On the basis of the network architecture, a conceptual, algorithmic and software model in the form of a closed homogeneous queuing network has been developed and its characteristics have been calculated. The parameters obtained as a result of modeling make it possible to evaluate and analyze the quality of service indicators in the telecommunications segment of the local positioning system under study, such as latency, performance, network load factor and the probability of losses, which can be used for efficient traffic management in the telecommunications segment of the geolocation system based on IEEE 802.15.4 standard.
Kokoreva E.V. —
Quality analysis of the fourth generation mobile communication systems service indicators
// Software systems and computational methods. – 2018. – ¹ 3.
– P. 35 - 44.
DOI: 10.7256/2454-0714.2018.3.26920
URL: https://en.e-notabene.ru/itmag/article_26920.html
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Abstract: The article presents the results of analytical modeling of mobile communication systems 4G. The purpose of this study is to evaluate QoS performance in an LTE network channel. As a simulation tool, the mathematical apparatus of queuing networks (SEMO) was chosen, which proved its effectiveness for calculating the characteristics of infocommunication systems of various purposes and of any dimension. The author examined various research methods, further on the basis of the evolutionary system architecture of LTE, a conceptual, algorithmic and programming model was developed in the form of a closed homogeneous SemOI and its characteristics were calculated. The mean value analysis method was adapted to obtain network quality parameters with LTE technology. During the simulation, the probabilistic-temporal characteristics of the service process in the fourth-generation mobile communication systems were obtained: the transmission delay and the network capacity for a different number of active users, represented in the form of dependency curves from the input load. The results can be used both for designing new ones and for efficient traffic management in existing mobile networks.