• The Journal of the Korea institute of electronic communication sciences
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• v.17 no.2
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• pp.229-236
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• 2022

This article studied the radio station inspection method, which utilizes the 8T8R combiner to reduce 5G radio station inspection measurement times. It is a common that 5G radio station inspections measure RF (Radio Frequency) output signals, which correspond to the number of arrayed antennas individually. However, this study suggested a way to save the time spent on existing methods, by comparing measurement values of individual channels and 8T8R. As a result, it is confirmed that when the 8T8R combiner is used, not only the resulting value of radio station inspections was accurate, but also the measurement time being shortened by up to 8 times compared to existing method.

• Electronics and Telecommunications Trends
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• v.23 no.5
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• pp.131-142
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• 2008

최근 ITU-R에서는 전파혼신과 밀접한 관계가 있는 무선기기의 RF 항목(주파수허용편차, 점유주파수대역폭, 불요발사 등)에 대한 권고안 SM.1045, SM.328, SM.853, SM.329, SM.1539 등을 제정하거나 개정하였다. 이와 관련하여 본 논문에서는 국내 무선설비규칙의 전파 질 허용치 및 측정방법과 연계하여 ITU-R RF 성능 권고(안)의 핵심내용에 대한 분석결과를 제시하였다. 본 논문의 내용은 무선기기의 인증 및 무선국 검사에 적용되는 국내 무선설비 기술기준치를 이해하는 데 참고자료로 활용될 것으로 기대된다.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.16 no.1
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• pp.24-32
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• 2023

The current Private 5G use procedure goes through the step of application examination, use and usage inspection, and can be divided in to application, examination step as a procedure before frequency allocation, and use, usage inspection step as a procedure after frequency allocation. Various types of documents are required to apply for a Private 5G, and due to the document screening process and radio station inspection for using Private 5G frequencies, the procedure for Private 5G applicants to use Private 5G is complicated and takes a considerable amount of time. In this paper, we proposed Frequency Allocation Process for Private 5G using a blockchain platform, which is fast and simplified than the current procedure. Through the use of a blockchain platform and NFT (Non-Fungible Token), reliability and integrity of the data required in the frequency allocation process were secured, and security of frequency usage information was maintained and a reliable Private 5G frequency allocation process was established. Also by applying the RPA system that minimizes human intervention, fairness was secured in the process of allocating Private 5G. Finally, the frequency allocation process of Private 5G based on the Ethereum blockchain was performed though a simulation.