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With the explosive growth of vehicle applications, vehicular networks basedon millimeter wave (mmWave) bands have attracted interests from both academiaand industry. mmWave communications are able to utilize the huge availablebandwidth to provide multiple Gbps transmission rates among vehicles. In thispaper, we address the content distribution scheduling problem in mmWavevehicular networks. It has been challenging for all vehicles in the samenetwork to complete content downloading due to the limited communicationresources of roadside units (RSUs) and the high mobility of vehicles. Wepropose a joint vehicle-to-infrastructure (V2I) and vehicle-tovehicle (V2V)scheduling scheme to minimize the total number of content distribution timeslots from a global optimization perspective. In the V2I phase, the RSUserially transmits integrity content to vehicles, which are selected accordingto the vehicular network topology and transmission scheduling scheme. In theV2V phase, full-duplex communications and concurrent transmissions areexploited to achieve content sharing between vehicles and improve transmissionefficiency. Performance evaluations demonstrate that our proposed schemereduces the number of time slots and significantly improves system throughputwhen compared with other schemes, especially under large-size file transfersand a large number of vehicles.

Content Distribution based on Joint V2I and V2V Scheduling in mmWave Vehicular Networks