Journal of Physics: Conference Series

1. Introduction 
The most important type of technological railway radio communication networks are train radio 
communication networks (TRC). Their purpose is the exchange of information between the 
participants of the transportation process from any point of the railway section at any time with a 
given quality and with an expectation of no more than a given time. TRC networks are linear radio 
networks that are built on a radio wire principle. From the command station (CS) of the train 
dispatcher (TD) to the stationary radio station (SRS) of the train station attendant (TSA), the signal is 
transmitted via a wired channel, and from the stationary radio station to the portable radio station 
(PRS) - via the radio channel. The simplest version of such a network is a linear network using a 
separate wired communication channel (Figure 1). 

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Intelligent Information Technology and Mathematical Modeling 2021 (IITMM 2021)
Journal of Physics: Conference Series
2131 (2021) 042096
IOP Publishing
doi:10.1088/1742-6596/2131/4/042096
2
Figure 1. Linear TRC network using a dedicated wired communication channel 
A more modern version of building a train radio communication network is a radio 
communication network using a data transmission network, in which the connection of individual 
elements is carried out via the Ethernet protocol without allocating a separate wired communication 
channel (Figure 2). 
Figure 2. Linear TRC network using a data transmission network for organizing a linear channel 
The TRC network is a complex technical system, one of the most important characteristics of 
which is its reliability. In turn, TRC is an element of the train traffic control system, therefore, both the 
timeliness of the arrival of trains and the safety of the entire transportation process depend on its 
reliability [1, 2]. 
In connection with the above, as well as due to the lack of generally accepted and approved 
approaches to assessing the reliability of technological radio communication networks, it becomes 
necessary to develop such approaches, taking into account the specifics of the organization of radio 
communication in railway transport. 
It should be noted that modern and promising communication technologies [3-7] provide much 
broader opportunities for the transmission of speech and data than those used today in train radio 
networks. However, the transition to new technologies will take place for a long time, and the options 
for organizing train radio communication networks considered in the article will be in high demand for 
a long time. 

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Intelligent Information Technology and Mathematical Modeling 2021 (IITMM 2021)
Journal of Physics: Conference Series