Performance evaluation of in-band LTE mobile relays in high speed railway environments

Nowadays, the increased use of smartphones, laptops and tablets, has led to an exponential increment of mobile data services in high speed mobility scenarios. Under this scope, the 3GPP working group for LTE standardization, is paying more attention to communication in railways environments. This standardization group is promoting the usage of mobile relay nodes for improving performance in high speed railways scenario. In this paper, the authors investigate the issue of mobile relay capacity improvement for on-board train users and its impact on the overall network performance.