Implementation of an O-RAN-Compliant Base Station System Using Commercial Off-the-Shelf Components
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Open Radio Access Network (O-RAN) standard has been proposed to separate the baseband signal processing unit from the Radio Frequency (RF) unit at base station system mainly for reducing the cost of base station systems through open-source interfaces between the two units. To satisfy the performance metrics in various scenarios, several fronthaul functional split options were presented by O-RAN. Amongst these options, the split option 7-2x is widely adopted in practical applications due to its excellent trade-off between the required bandwidth and RU overhead. In this paper, we present a hardware implementation of a base station system that is compliant with the Category B of O-RAN split option 7-2x. It consists of O-DU and O-RU implemented with a commercial off-the-shelf Digital Signal Processor and RF transceiver, respectively. The performance of the proposed base station system is evaluated in terms of Bit Error Rate and received signal power as well as the required fronthaul bandwidth. Through various experimental tests, we have observed that the proposed system reduces the fronthaul bandwidth nearly by 89.7% compared to the conventional system that dose not employ the O-RAN standard.
Abstract
Open Radio Access Network (O-RAN) standard has been proposed to separate the baseband signal processing unit from the Radio Frequency (RF) unit at base station system mainly for reducing the cost of base station systems through open-source interfaces between the two units. To satisfy the performance metrics in various scenarios, several fronthaul functional split options were presented by O-RAN. Amongst these options, the split option 7-2x is widely adopted in practical applications due to its excellent trade-off between the required bandwidth and RU overhead. In this paper, we present a hardware implementation of a base station system that is compliant with the Category B of O-RAN split option 7-2x. It consists of O-DU and O-RU implemented with a commercial off-the-shelf Digital Signal Processor and RF transceiver, respectively. The performance of the proposed base station system is evaluated in terms of Bit Error Rate and received signal power as well as the required fronthaul bandwidth. Through various experimental tests, we have observed that the proposed system reduces the fronthaul bandwidth nearly by 89.7% compared to the conventional system that dose not employ the O-RAN standard.
참고문헌 (17)
- A. Checko, "Cloud RAN for Mobile Networks -A Technology Overview", IEEE Communications Surveys & Tutorials, 17(1), pp.405~426 (2015)
- C. N. Tadros, "Software Defined Network-Based Management for Enhanced 5G Network Services", IEEE Access, 8, pp.53997~54008 (2020)
- C. -L. I, J. Huang, "Recent Progress on C-RAN Centralization and Cloudification", IEEE Access, 2, pp.1030~1039 (2014)
- S. K. Singh, "The Evolution of Radio Access Network Towards Open-RAN: Challenges and Opportunities", 2020IEEE Wireless Communications and Networking Conference Workshops (WCNCW), pp.1~6 (2020)
- Mustafa Mohsin, "On Analyzing Beamforming Implementation in O-RAN 5G", Electronics, 10(17), pp.2162~ (2021), MDPI AG[DOI]
- 나용, "멀티코어 DSP를 이용한 다중 안테나를 지원하는 SDR 기반 LTE-A PDSCH 디코더 구현", (사)디지털산업정보학회 논문지, 15(4), pp.85~92 (2019), (사)디지털산업정보학회
- Kreinar, E, "RFNoC Neural Network Library using Vivado HLS", Proceedings Of The GNU Radio Conference, 2(1), pp.7~ (2017)
- "KeyStone Architecture Bit Rate Coprocessor (BCP) User's Guide, SPRUGZIA" (2015)[URL]
- "TMS320C6670 Multicore Fixed and Floating-point System-On-Chip Data Manual, SPRS689D" (2012)[URL]
- 장중봉, "Design and Implementation of Software Defined Radio Based IEEE 802.11ac Encoder Using Multicore DSP", (사)디지털산업정보학회 논문지, 15(4), pp.93~101 (2019), (사)디지털산업정보학회
- "X300/X310"[URL]
- Braun, M, "RFNoC: RF Network-on-Chip", Proceedings Of The GNU Radio Conference, 1(1) (2016)
- "Getting Started with RFNoC Development"[URL]
- "Getting Started with RFNoC in UHD 4.0"[URL]
- "R3-162102: CU-DU Spsit:Refinement for Annex A"[URL]
- "LTE Toolbox User’s Guide, R2019"[URL]