Research
Cyber-Physical System Security Lab
Cyber-Physical Systems
My research is focused on foundations of Cyber-Physical Systems (CPS). CPS are next-generation computer systems which sense and actuate physical environment. Their examples are autonomous driving vehicles, unmanned aerial vehicles, and intelligent surgery robots. CPS can potentially revolutionize entire our life. One important aspect of CPS is real-time systems because CPS interact physical entities which are sensitive to time. Real-time systems are systems whose correctness depends on their temporal aspects as well as their functional aspects. In Real Time scheduling, its performance is evaluated by timeliness on timing constraints (deadlines). On the other hand, speed/average case performance/throughput, which is used for performance metric in traditional system research, are less significant. Its key property is predictability on timing constraints.

Machine Learning Security & Autonomous Driving
Federated learning is a learning method that collects only learned models on a server to ensure data privacy. FL proceeds with data directly from distributed clients. As clients in FL often have limited communication bandwidth, communication between servers and clients should be optimized to improve performance. FL clients have to communicate in unstable network environments. However, as existing FL aggregation algorithms transmit and receive a large amount of weights, accuracy is significantly reduced in unstable network environments.

Mixed Criticality Embedded Systems
Many safety-critical real-time systems such as avionics and automotive consist of multiple functionalities with different criticality. For example, an Unmanned Aerial Vehicle (UAV) consists of flight-related (high-critical) functionalities and mission-related (low-critical) functionalities. An increasing trend is to integrate multiple components with different criticality into a single shared platform, called Mixed-Criticality (MC) systems, in order to reduce manufacturing cost.
Projects
커넥티드카 및 차량 디지털트윈을 위한 효율적인 데이터 동기화 모델 및 차량 민감정보 동기화 방안 연구
2024 – 2026
42dot
현장연계 미래선도인재양성 지원사업 — 탄소중립 ESG 미래선도 실전문제연구단
참여과제
2022 – 2024
한국연구재단
Brain Korea 21 (BK21) — 사이버 물리 공간 청정화 연구사업단
참여과제
2020 – 2025
교육부
대학 ICT연구센터 (ITRC) — 디지털 트윈 기반 스마트 에너지 시티 융합 기술 개발 및 인력양성
참여과제
2020 – 2027
정보통신기획평가원 (IITP)
전기소비자 특성을 반영한 주택용 전력사용 빅데이터 분석/관리체계 구축
참여과제
2019 – 2022
에너지기술평가원
4차 산업혁명 기반 산업기술보호 R&D 전문인력 양성
참여과제
2019 – 2023
한국산업기술보호협회
안정성과 보안성을 고려한 자율주행 플랫폼 연구
개인과제
2018 – 2021
한국연구재단 (NRF)
대학 ICT연구센터(ITRC) — 블럭체인서비스센터
참여과제
2018 – 2024
정보통신기획평가원 (IITP)