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posted on 09.11.2019, 00:39by Elias Yaacoub, Ahmad Alsharoa, Hakim Ghazzai, Mohamed-Slim Alouini
To meet the
increasing demands for passenger data rates, modern railway communication
networks face significant challenges. The advent of 5G communications after the
long-term evolution (LTE) and LTE-Advanced (LTE-A) systems provides several
technological advances to address these challenges. In this paper, after
reviewing the main 5G communication aspects for modern railways, we present
methods to ensure connectivity and energy efficiency for the passengers' user
equipment (UE) through the use of mobile relays (MRs) on top of the train
wagons in conjunction with intelligent resource allocation. Relevant challenges
to train connectivity are also presented, and suitable solutions are outlined.