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학술지 Realizing Multi-Gbps Vehicular Communication: Design, Implementation, and Validation
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저자
노고산, 김준형, 정희상, 김일규
발행일
201901
출처
IEEE Access, v.7, pp.19435-19446
ISSN
2169-3536
출판사
IEEE
DOI
https://dx.doi.org/10.1109/ACCESS.2019.2896598
협약과제
19HH4400, [사회문제] 통신비 부담 경감을 위한 대중교통수단에서의 공공와이파이 체감 품질 개선, 김일규
초록
This paper proposes a vehicular communication system that can achieve multi-Gbps data rate transmission for train and car applications. Employing a millimeter-wave frequency band around 25 GHz, the proposed system provides mobile backhaul connectivity for vehicle user equipments (UEs). In order to support a very high data rate with such a high carrier frequency while guaranteeing sufficient robustness against high mobility-related behaviors such as fast channel variation and unstable handover, we employ a relaying network architecture consisting of a backhaul link to a vehicle UE and an in-vehicle access link. Based on that, we provide a set of fundamental design elements including numerology, frame structure, the reference signal, multi-antenna scheme, and handover. We then validate the proposed vehicular communication system by implementing an experimental testbed consisting of baseband modem, RF front end, an array antenna units, and by performing field trials in an actual subway tunnel and urban road environments. The experimental validation results reveal that providing multi-Gbps backhaul transmission is possible and worthwhile for both train and car scenarios.
키워드
5G, high mobility, mmWave, testbed, vehicular communications
KSP 제안 키워드
5 GHz, Array antenna, Carrier frequency, Design elements, Experimental testbed, Field trial, Frame structure, High Mobility, High data rate, In-vehicle, Mobile backhaul