Особливості впровадження сучасних цифрових радіотехнологій на мережах зв’язку залізниць

Abstract

A comparative analysis of digital radio technologies DMR, GSM-R and LTE-R was carried out. The principles of construction and basic technical and operational characteristics of radio equipment and directions of use for technological subscribers of different categories are considered. Recommendations on the introduction of radio equipment of various technologies on networks of mobile radio communications of railways are developed. The most expedient way of introducing digital systems of technological radio communication at the present stage is the use of radio equipment of the standard DMR. It provides the task of "digitization" of conventional radio communication systems and allows modernization of existing analogue networks by gradual replacement of analogue equipment on a digital basis, without violating existing systems of technological radio communication with the partial use of existing infrastructure. GSM-R systems should be used for high-speed train trains. Radio equipment LTE-R is targeted at applications in high-speed trains of passenger trains using automated control systems that require large volumes and speeds of information transmission.The conducted calculations showed a decrease in the radio communication in networks GSM-R and LTE-R, which leads to an increase in the cost of network infrastructure.