The Journal of the Convergence on Culture Technology (문화기술의 융합)

The International Promotion Agency of Culture Technology (국제문화기술진흥원)
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Analysis of Beam Discovery and Link setup for MXN based mmWave

mmWave기반의 MXN 빔 탐색 및 링크설정 방식 분석

  • 백승권 (한국전자통신연구원(경북대 IT대학 컴퓨터학부)) ;
  • 한기준 (경북대학교 IT대학 컴퓨터학부)
  • Received : 2019.01.27
  • Accepted : 2019.03.29
  • Published : 2019.05.31
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Abstract

In this paper, we propose a new wireless transport network, which is named as Mobile Xhaul Network(MXN), that is enable to bring cost efficiency of fronthaul, midhaul and backhaul and to make easy installation of 5G Radio Access Network(RAN). For this purpose, we design XDU discovery and xhaul link setup mechanism with MXN architecture and operational procedure. Especially, in this paper, we propose various types of beam discovery mechanisms for mmWave based radio access on XDU and evaluate proposed schemes. The Simulation result shows that threshold based scheme and information based scheme have less than about 50% beam discovery latency compared to full search scheme.

본 논문에서는 5G 이동통신 무선접속망의 프론트홀(fronthaul), 미드홀(midhaul), 백홀(backhaul) 설치 비용 효율성과 구축 용이성을 증대시키기 위해 제안된 MXN의 구조 및 동작절차를 제시하고, XDU 탐색 및 xhaul 링크 설정방식을 분석하였다. 특히 본 논문에서는 mmWave기반의 xhaul 링크 설정을 위한 여러 형태의 빔탐색 방식을 제시하고 이들 방식에 대한 성능 분석을 수행하였다. 성능 분석의 결과 제안한 임계치 기반의 탐색 혹은 획득 정보기반의 탐색은 모든 빔을 순차적으로 탐색하는 전체 빔 탐색 방식에 비해 50%이하의 짧은 탐색 지연시간을 보장함을 알 수 있었다.

Keywords

GJMGCK_2019_v5n2_381_f0001.png 이미지

그림 1. MXN의 구조 Figure 1. MXN architecture

GJMGCK_2019_v5n2_381_f0002.png 이미지

그림 2. 빔탐색 및 동기획득을 위한 무선 프레임 구조 Figure 2. Radio Frame structure for beam search and synchronization

GJMGCK_2019_v5n2_381_f0003.png 이미지

그림 3. XDU 탐색 및 접속절차 Figure 3. XDU discovery and xhaul link setup procedure

GJMGCK_2019_v5n2_381_f0004.png 이미지

그림 4. XDU 빔 탐색 방식 비교 Figure 4. Comparison of XDU beam discovery schemes

GJMGCK_2019_v5n2_381_f0005.png 이미지

그림 5. 성능평가를 위한 MXN 프레임 구조 Figure 5. MXN frame structure for Performance evaluation

GJMGCK_2019_v5n2_381_f0006.png 이미지

그림 6. 탐색방식 별 빔탐색 지연 시뮬레이션 결과 Figure 6. Simulation Result of latency according to beam discovery scheme

표 1. 시뮬레이선 파라미터 Table 1. Simulation Parameters

GJMGCK_2019_v5n2_381_t0001.png 이미지

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