5G 이동통신 비전과 요소기술
5G Mobile: Vision and Key Technologies
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초록
4세대 이동통신의 개념 정립 후 표준 및 상용화 완료까지 10여 년이 걸렸으며 새로운 세대의 이동통신 출연이 점점빨라지고 있는 추세에 따라 5G 이동통신은 2020년 경에 상용화 될 것으로 보인다. 최근 ITU-R WP 5D는 5G 시스템의 비전과 핵심 성능을 제시하는 권고를 개발 완료하였으며 2017년 내에 5G 시스템이 갖추어야할 기술적 요구사항을 확정할 예정이다. 본 논문에서는 이미 널리 사용되기 시작한 4G LTE 및 LTE-Advanced 이동통신 시스템의 기술적 특징을 살펴보고 현재까지 ITU-R 논의에서 합의된 5G 비전과 주요 사용 시나리오, 핵심 성능지표, 표준화 일정 등을 알아본다. 예측되는 5G 무선접속 구조, 4G LTE 및 LTE-Advanced 의 역할, 5G 주요 시나리오별 핵심 후보기술들에 대해 자세히 살펴본다.
Abstract
For 4G mobile communications, since the establishment of the concept, it took about 10 years to complete standardization and commercialization. With a recent trend of the faster appearance of a new generation mobile system, 5G mobile communications is expected to be commercialized in around 2020. Recently, ITU-R WP 5D has developed recommendation on 5G vision and key capabilities and is scheduled to finalize the technical performance requirements for 5G in 2017. This paper provides a short review on the major technical features of 4G LTE and LTE-Advanced mobile systems, which have now been widely deployed and used, and then describes 5G vison, and main usage scenarios, key capabilities, standardization timeline etc., which have been agreed in ITU-R recently. A detailed review is given on the expected 5G radio access structure, the role of 4G LTE/LTE-Advanced in 5G, and key enabling technologies in each of the main usage scenarios for 5G.
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