Actual problems of modern science, education and training

Keywords: LoRaWAN, network server, gateway, sensor, wagon, transportation organization, railway transport
Introduction. The operational management of transportation in railway transport is based on primary information, which is generated mainly at railway stations. By means of an automated system for the operational management of
transportation, operations occurring at the stations are recorded by operational workers in a single database. It is proposed to use the Internet of Things ( IoT ) technology, namely the LoRaWAN wireless type of communication, to improve the reliability and quality of information related to rolling stock. With the help of LoRaWAN technology, it is possible to achieve automatic identification of rolling stock without the participation of personnel and improve the process of operational transportation management.
Lo RaWAN or Long Range Wide Area Network was introduced as an energy efficient network technology by IBM Research and Semtech . Technology based on Semtech LoRa (™) PHY chip. In terms of technical capabilities, it can satisfy the requirements for information support in transportation processes. The main advantages include low power consumption, relatively inexpensive deployment cost and availability, autonomous ownership of the entire infrastructure (independent of cellular networks) and a wide range of applications.
Literature review. In papers [1-4], the problems of using the Internet of Things in smart cities were considered. Opportunities and effective directions of implementation are revealed. Taking into account the specifics of the operation of this network, the consistent introduction into urban infrastructures is described in detail. Articles [5-7] provide the technical characteristics and architecture of building a LoRaWAN network to develop a specific asset monitoring system. The issues of using one or another wireless network are discussed based on the results of the comparison. Research methodology. Consider the architecture of the LoRaWAN system .
The system can be conditionally divided into 4 blocks. The first block contains sensors, the second block contains special antennas ( gateway ) for sending and receiving signals. The third, perhaps the most basic, is the network server, which receives data and processes it in the right order and transfers it to the appropriate applications.
The fourth block includes ready-made applications where the processed data will be stored and this data will be visually presented. This conditional division can be supplemented by auxiliary elements.

Figure 1. LoRaWAN Network Architecture