Biography

I received my B.S. degree in Computer Education from Sungkyunkwan University (SKKU), Seoul, Korea, in 2017, and my Ph.D. degree in Electrical Engineering and Computer Science from Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Korea, in 2023. I was a Postdoctoral Research Fellow in the School of Electrical and Electronic Engineering at Yonsei University, Seoul, Korea, from 2023 to 2024. Currently, I am a Senior Researcher in Future Mobile Communication Research Center, ICT Convergence Research Division at Gumi Electronics and Information Technology Research Institute (GERI), Gumi, Korea. My research interests include blockchain, wireless communications, distributed systems, consensus protocols, Internet of Things (IoT), and security.

Education

Ph.D. in Electrical Engineering and Computer Science

Sept. 2017 - Aug. 2023

Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Korea

Dissertation: Blockchain-empowered Wireless Networks: Modeling and Analysis

(Advisor: Prof. Jemin Lee)

B.S. in Computer Education

Mar. 2011 - Aug. 2017

Sungkyunkwan University (SKKU), Seoul, Korea

Experience

Senior Researcher

June 2024 - Present

Future Mobile Communication Research Center

ICT Convergence Research Division

Gumi Electronics and Information Technology Research Institute (GERI), Gumi, Korea

Post-doctoral Research Fellow

Sept. 2023 - June 2024

School of Electrical and Electronic Engineering

Yonsei University, Seoul, Korea

(Advisor: Prof. Jemin Lee)

Visiting Ph.D. Student

Dec. 2018

National Sun Yat-sen University (NSYSU), Kaohsiung, Taiwan

(Advisor: Prof. Ruei-Hau Hsu)

Publications

International Journal Papers

• D. Kim, S. Yun, S. Lee, J. Lee, and D. Niyato, "Intelligent transaction generation control for permissioned blockchain-based services," IEEE Transactions on Services Computing, revised.

• S. Lee, M. Kim, M. Kim, and J. Lee, "Timely updates in blockchain for UAV-assisted data collection networks," IEEE Transactions on Wireless Communications, submitted.

• D. Yu, S. Lee, R.-H. Hsu, and J. Lee, "Ensuring end-to-end security with fine-grained access control for connected and autonomous vehicles," IEEE Transactions on Information Forensics and Security, to appear. [arXiv]

• D. Kim, S. Yun, S. Lee, J. Lee, and T. Q. S. Quek, "Reinforcement learning-based sensing decision for data freshness in blockchain-empowered wireless networks," IEEE Wireless Communications Letters, Early Access, DOI: 10.1109/LWC.2024.3406913. [IEEE Xplore] (Top 20% Journal in JCR)

• S. Lee, M. Kim, J. Lee, R.-H. Hsu, M.-S. Kim, and T. Q. S. Quek, "Facing to latency of Hyperledger Fabric for blockchain-enabled IoT: Modeling and analysis," IEEE Network, vol. 37, no. 6, pp. 232-239, Nov. 2023. [IEEE Xplore] (Top 3% Journal in JCR)

• M. Kim, S. Lee, C. Park, J. Lee, and W. Saad, "Ensuring data freshness for blockchain-enabled monitoring networks," IEEE Internet of Things Journal, vol. 9, no. 12, pp. 9775-9788, June 2022. [IEEE Xplore] (Top 5% Journal in JCR)

• S. Lee, M. Kim, J. Lee, R.-H. Hsu, and T. Q. S. Quek, "Is blockchain suitable for data freshness? An age-of-information perspective," IEEE Network, vol. 35, no. 2, pp. 96-103, Mar./Apr. 2021. [IEEE Xplore] (Top 3% Journal in JCR)

International Conference Papers

• S. Lee and J. Lee, "Wireless blockchains: Trade-offs and future challenges," in Proc. Int. Conf. Inf. Commun. Technol. Converg. (ICTC), Jeju Island, Korea, Oct. 2022, pp. 1-3. [IEEE Xplore]

• S. Lee, M. Kim, M. Kim, and J. Lee, "Timely update probability analysis of blockchain ledger in UAV-assisted data collection networks," in Proc. IEEE Int. Conf. Commun. (ICC), Seoul, Korea, May 2022, pp. 1-6. [IEEE Xplore]

• M. Kim, S. Lee, C. Park, and J. Lee, "Age of information analysis in Hyperledger Fabric blockchain-enabled monitoring networks," in Proc. IEEE Int. Conf. Commun. (ICC), Montreal, QC, Canada, June 2021, pp. 1-6. [IEEE Xplore]

Domestic Conference Papers

• 김민수, 이성호, 박찬원, 이제민, "데이터의 무결성을 고려한 평균 정보의 나이 분석," 한국통신학회 동계종합학술발표회, 평창, 대한민국, 2021 2월, pp. 1-2. [DBpia]

Patents

• D. Yu, S. Lee, and J. Lee, "속성 기반 접근 제어를 이용하는 커넥티드 카 엔드-투-엔드 보안 시스템 및 그 방법," South Korea Patent Application, to be applied.

• S. Lee, M. Kim, and J. Lee, "블록체인 네트워크와 연결된 무인기의 배치위치 결정 방법 및 장치," South Korea Patent Application, KR10-2024-0032049, Mar. 2024.

• D. Kim, S. Yun, S. Lee, and J. Lee, "블록체인 네트워크에서 노드 장치 및 이의 동작 방법," South Korea Patent Application, KR10-2024-0032044, Mar. 2024.

Teaching Experience

• The 2021-2022 WCO BACUDA Scholarship (Data Analytics) Programme [link]

  • Co-lecturer in Permissioned Blockchain Course

  • Jointly organized by World Customs Organization (WCO) and SKKU (Dec. 2021 - Feb. 2022)

• SE364 Introduction to Electrical and Electronic Engineering II

  • Teaching Assistant, DGIST (Fall semester 2018)

• IC618 Introduction to Computer and Network Security

  • Teaching Assistant, DGIST (Spring semester 2018)

Workshops and Talks

• Recent advances and future directions for blockchain-empowered 6G

  • ICTC Workshop on 6G Research Initiative (IW6RI)

  • Hosted by The Korean Institute of Communications and Information Sciences (KICS)

  • Venue: Pearl, Lotte Hotel Jeju, Jeju Island, Korea (Oct. 13, 2023)

• Blockchain-enabled wireless networks: Modeling and analysis

  • A3 Foresight Program: AI-based Future IoT Technologies and Services

  • Hosted by National Research Foundation of Korea (NRF), Japan Society for the Promotion of Science (JSPS), and National Natural Science Foundation of China (NSFC)

  • Venue: C2, Ocloud Hotel Gangnam, Seoul, Korea (Feb. 21, 2023)

• Timely updates in blockchain ledger for UAV-assisted data collection networks

  • SKKU-Australian National University (ANU) International Student Workshop

  • Hosted by BrainKorea21 and SKKU Communications and Networks Group

  • Venue: 26106, Engineering Building II, SKKU, Suwon, Korea (May 20, 2022)

Honors and Awards

• IEEE ICC 2022 Student Travel Grant, IEEE Communications Society (ComSoc) (May 2022)

Projects

• Analysis and Optimization of End-to-end Data Update Latency in Blockchain-empowered Wireless Networks (블록체인 기반 무선 네트워크의 종단 간 데이터 업데이트 지연시간 분석 및 최적화 기법 개발)

  • Principal Investigator (PI), NRF (한국연구재단) (Sept. 2023 - Present)

• Extreme Exploitation of Dark Data Research Center (암흑데이터 극한활용 연구센터)

  • Graduate Research Assistant, NRF (한국연구재단, 선도연구센터) (Jan. 2019 - Aug. 2023)

• Human-centric CPS (인간중심 CPS 연구)

  • Graduate Research Assistant, DGIST (Mar. 2018 - Dec. 2018)