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T-Comm Vol.13. #12-2019
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ANALYSIS OF CONNECTION RELEASES OVER E-RAB PROTOCOL 
OF THE LTE/LTE-A MOBILE NETWORK
Vladimir A. Fadeev, 
Kazan National Research Technical University named after A.N. Tupolev-KAI, Kazan, Russia,
[e-mail]
Ksenia A. Korsukova,
Kazan National Research Technical University named after A.N. Tupolev-KAI, Kazan, Russia,
[e-mail]
Adel F. Nadeev,
Kazan National Research Technical University named after A.N. Tupolev-KAI, Kazan, Russia,
[e-mail]
Abstract
Currently, an approach based on the analysis of time series is widely used to research the properties of complex systems. In particu-
lar, this approach is also used to analyze the performance indicators of the quality of cellular networks of LTE/LTE-A standards. As a
rule, quality indicators are divided into technical (QoS – Quality of Service) and user-defined (QoE – Quality of Experience), which
consist of a number of key performance indicators (KPI). This paper discusses the characteristics of the percentage of disconnections
over the E-RAB protocol of the network of the specified standards of one of the regional cellular operators of the Russian Federation.
The main goal of this work is a detailed analysis of the selected parameter from the point of view of statistical data processing, as well
as correlation analysis, to identify the internal relationships between network quality parameters, as well as the causes of abnormal
work incidents. The results obtained are important for the subsequent analysis of the parameter under consideration, as well as for its
forecasting in the short and long term. The experience gained in this work is also important from the point of view of a general under-
standing of the operation and optimization of LTE/LTE-A networks within the framework of regional management, or the management
of network segments within the same time zone. Namely, in terms of the continuity of the provision of services based on the IP pro-
tocol. Based on the results, intermediate recommendations are generated on optimizing the selected parameter within the framework
of the existing operator resources, which is a demonstration of the importance of this study from the point of view of technical appli-
cability.