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학술대회 mmWave-based Mobile Backhaul Transceiver for High Speed Train Communication Systems
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노고산, 김준형, 정희상, 회빙, 최영민, 김일규
Global Communications Conference (GLOBECOM) Workshops 2017, pp.1-5
17HF1900, 평창 동계올림픽 5G 통신서비스 지원을 위한 차세대 통신네트워크 기술개발, 정현규
This paper presents a testbed for evaluating feasibility and potential effectiveness of the mmWave-based mobile backhaul transceiver in a high speed train communication system. Employing a hierarchical relay network architecture where each user inside a train accesses the network with the aid of an onboard relay deployed at the train, practical obstacles from large train carriage penetration loss and group handover can be easily resolved. We provide design and implementation details of the proposed mobile relay-based network architecture, namely mobile hotspot network (MHN). We focus on baseband and RF front-end, which are able to support over-Gbps data rate per train in a mmWave band at a very high mobility up to 500 km/h. We also provide an actual field trial result in Seoul subway line 8 as well as an indoor lab test result. The subway test results show that around 1.25 Gbps downlink data rate is attainable along most of the actual subway paths.
KSP 제안 키워드
25 Gbps, Communication system, Field trial, High Mobility, High Speed Train, Lab test, Mobile Hotspot, Mobile backhaul, Mobile relay, Network Architecture, Penetration loss