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학술지 Feasibility Validation of a 5G-Enabled mmWave Vehicular Communication System on a Highway
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저자
노고산, 김준형, 최승남, 이남석, 정희상, 김일규
발행일
202103
출처
IEEE Access, v.9, pp.36535-36546
ISSN
2169-3536
출판사
IEEE
DOI
https://dx.doi.org/10.1109/ACCESS.2021.3062907
협약과제
21HH1300, [사회문제] 통신비 부담 경감을 위한 대중교통수단에서의 공공와이파이 체감 품질 개선, 정희상
초록
In this paper, we present an mmWave-based vehicle-to-infrastructure (V2I) communication system operating at a 22-23 GHz frequency band, and evaluate its feasibility and effectiveness on an actual highway through a field trial. Based on a network layout that is well suited for the mmWave-based high mobility vehicular applications, we provide physical and higher layer design details, which are based on the 3GPP 5G New Radio (NR) standard. We then investigate key technologies to overcome the performance degradation of the mmWave-based system due to high mobility: a user equipment (UE)-oriented beam switching-based beamforming scheme, a fast and robust handover procedure with a two-step timing advance (TA) update, and mobile relaying for providing better quality-of-service (QoS) to in-vehicle UEs. The proposed system design and related key technologies are validated through a real-world testbed in an actual highway test site. Regarding this, we describe the specifics of testbed implementation and provide the experimental results obtained from the trial. The validation results show that the 5G NR-based mmWave system is feasible and effective for realizing high data rate vehicular communication on a highway.
키워드
5G, high mobility, mmWave, testbed, vehicular communications
KSP 제안 키워드
Beam switching, Beamforming scheme, Field trial, High Mobility, High data rate, In-vehicle, Key technology, Layer design, Network layout, Real-world testbed, Testbed implementation