Evaluation of LTE-Advanced connectivity options for the provisioning of V2X services

In order to shed some useful light on the design of multi-connectivity (MC) solutions for vehicular-to anything (V2X) communications, this work evaluates the performance of different connectivity alternatives based on LTE-Advanced for the support of key intelligent transportation systems (ITS) services as CAM, DENM and platooning in a realistic highway scenario. In particular, downlink unicast, downlink multicast based on Single-Cell Point-to-Multipoint (SC-PTM), and V2X sidelink connectivity modes have been benchmarked for each ITS service separately. Results show that V2X sidelink transmission exhibits excellent performance for all the services when its subchannelization is properly configured. Downlink multicast is a valid option for DENM and CAM although the optimum modulation and coding scheme (MCS) is different for each service. Finally, unicast is unable to provide a successful performance for CAM while it is valid for platooning and DENM.

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