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A key enabler for the emerging autonomous and cooperative driving services ishigh-throughput and reliable Vehicle-to-Network (V2N) communication. In thisrespect, the millimeter wave (mmWave) frequencies hold great promises becauseof the large available bandwidth which may provide the required link capacity.However, this potential is hindered by the challenging propagationcharacteristics of high-frequency channels and the dynamic topology of thevehicular scenarios, which affect the reliability of the connection. Moreover,mmWave transmissions typically leverage beamforming gain to compensate for theincreased path loss experienced at high frequencies. This, however, requiresfine alignment of the transmitting and receiving beams, which may be difficultin vehicular scenarios. Those limitations may undermine the performance of V2Ncommunications and pose new challenges for proper vehicular communicationdesign. In this paper, we study by simulation the practical feasibility of somemmWave-aware strategies to support V2N, in comparison to the traditional LTEconnectivity below 6 GHz. The results show that the orchestration amongdifferent radios represents a viable solution to enable both high-capacity androbust V2N communications.

Performance Study of LTE and mmWave in Vehicle-to-Network Communications