Performance Evaluation and Design of Communication Networks/Systems
Medium Access Control (MAC)
Network Resource Allocation
Wireless LAN/PAN (WLAN/WPAN)
LTE, 5G
V2X, Connected Car
IoT, M2M, Ad-hoc/Sensor Networks, RFID/NFC
Education
(Ph.D.) University of Texas at Austin, USA (1999)
Experience
Senior Engineer, Samsung Electronics (1999-2001)
Visiting Professor, Pennsylvania State University, USA (2007-2008)
Journal Articles
(2023)
Random Access and Uplink Shared Channel Resource Allocation with NOMA.
IEEE TRANSACTIONS ON MOBILE COMPUTING.
1,
1
(2023)
Integrated 2–4 Step Random Access for Heterogeneous and Massive IoT Devices.
IEEE TRANSACTIONS ON GREEN COMMUNICATIONS AND NETWORKING.
1,
1
(2023)
Opportunistic Backscatter Communication Protocol Underlying Energy Harvesting IoT Networks.
IEEE ACCESS.
1,
1
(2022)
Throughput Analysis of NOMA-ALOHA.
IEEE TRANSACTIONS ON MOBILE COMPUTING.
21,
4
(2021)
How IEEE 802.11ba Wake-Up Radio Coexists With Legacy WiFi?.
IEEE COMMUNICATIONS LETTERS.
25,
10
(2021)
Spatiotemporal Medium Access Control for Wireless Powered IoT Networks.
IEEE INTERNET OF THINGS JOURNAL.
8,
19
(2021)
Learning nodes: machine learning-based energy and data management strategy.
EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING.
2021,
1
(2021)
Random Power Back-Off for Random Access in 5G Networks.
IEEE ACCESS.
9,
1
(2021)
Device-Selective Energy Request in RF Energy-Harvesting Networks.
IEEE COMMUNICATIONS LETTERS.
25,
5
(2021)
Event Driven Duty Cycling with Reinforcement Learning and Monte Carlo Technique for Wireless Network.
MOBILE INFORMATION SYSTEMS.
2021,
(2021)
Device-Selective Energy Request in RF Energy-Harvesting Networks.
IEEE COMMUNICATIONS LETTERS.
25,
5
(2021)
5G 네트워크에서 빔-스위칭 기술을 활용한 효율적인 랜덤액세스 방법.
한국통신학회논문지.
46,
1
(2020)
Backscatter-Aided Cooperative Transmission in Wireless-Powered Heterogeneous Networks.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS.
19,
11
(2020)
Throughput Analysis of NOMA-ALOHA.
IEEE TRANSACTIONS ON MOBILE COMPUTING.
1,
1
(2020)
Recycling Random Access Opportunities with Secondary Access Class Barring.
IEEE TRANSACTIONS ON MOBILE COMPUTING.
19,
9
(2020)
Air Charging Protocol With Spatial-Reuse.
IEEE WIRELESS COMMUNICATIONS LETTERS.
9,
3
(2019)
GWINs: Group-Based Medium Access for Large-Scale Wireless Powered IoT Networks.
IEEE ACCESS.
7,
-
(2019)
GSMAC: Group-Scheduled MAC Protocol with Energy Beamforming in M2M Networks.
WIRELESS PERSONAL COMMUNICATIONS.
111,
1
(2019)
V2IoT Communication Systems for Road Safety.
IEEE WIRELESS COMMUNICATIONS LETTERS.
8,
5
(2019)
Learning AP in wireless powered communication networks.
INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS.
32,
14
Publications
(2008)
ns2 네트워크 시뮬레이터의 이해.
홍릉과학출판사.
Co-author
(2008)
ns2 네트워크 시뮬레이터의 활용.
홍릉과학출판사.
Co-author
Patent/Intellectual Property
Random access method considering a coverage level, subcarrier spacing configuration and/or multi-tone configuration in internet of things environment.
17342862.
20231031.
UNITED STATES
Apparatus for controlling charging of electric vehicle and method therefor.
17022797.
20230919.
UNITED STATES
Wake-up Radio Systems and Methods Based on Backscatter Wake-up Radiowork Environment.
16915158.
20230502.
UNITED STATES
V2V 인터랙션/V2IoT 통신 방법과 장치.
10-2017-0115085.
20221201.
KOREA, REPUBLIC OF
Method and Apparatus for Selective Energy Transmission in Wireless Network.
16/696006.
20221122.
UNITED STATES
무선 통신 시스템에서 랜덤 액세스를 수행하기 위한 방법 및 장치.
10-2015-0073227.
20220429.
KOREA, REPUBLIC OF
무선 네트워크 환경에서 랜덤 빔-스위칭을 이용한 랜덤 액세스 방법 및 장치.
10-2020-0123335.
20220328.
KOREA, REPUBLIC OF
Random access method considering a coverage level, subcarrier spacing configuration and/or multi-tone configuration in internet of things environment.
16/591704.
20210713.
UNITED STATES
V2V interaction/V2IOT communication method and device.
16/639009.
20210615.
UNITED STATES
백스캐터 웨이크업 라디오 기반 웨이크업 라디오 시스템 및 방법.
10-2019-0177969.
20210525.
KOREA, REPUBLIC OF
Methods of Wireless Power Transfer by Energy Signal Transfer Apparatus Operating in the Same Frequency Band As Wireless Local Area Network in Wireless Power Transfer Energy Harvesting System and Energy Signal Transfer Appratuses for Performing the Same.
US2018-136448.
20201027.
UNITED STATES
무선 전력 통신 네트워크에서의 채널 엑세스 방법 및 장치.
10-2019-0064753.
20201007.
KOREA, REPUBLIC OF
무선 네트워크에서의 선택적 에너지 전송 방법 및 장치.
10-2018-0168677.
20200703.
KOREA, REPUBLIC OF
그룹 기반의 에너지 하베스팅 방법 및 시스템.
10-2018-0115005.
20200528.
KOREA, REPUBLIC OF
Method and Apparatuses for Scheduling Service Area in Drone Network Environment.
US2018-923090.
20200414.
UNITED STATES
필터를 이용한 태그 및 리더 간의 선택적 통신 방법 및 장치.
10-2018-0170761.
20200302.
KOREA, REPUBLIC OF
APPARATUS FOR SCHEDULING CONTENTION-BASED DATA TRANSFER AND MEHTOD THEREOF.
15/856630.
20200114.
UNITED STATES
Control Method for Wireless Power Transfer Apparatus Considering Interference in Wireless Powered Communication Networks, and Wireless Power Transfer Apparatus.
15/629129.
20200114.
UNITED STATES
Random Access Method Considering a Coverage Level, Subcarrier Spacing Configuration and/or Multi-Tone Configuration in Internet of Things Environment.
15/524466.
20191210.
UNITED STATES
Method and apparatus for controlling timing advance.
15/739128.
20191112.
UNITED STATES
Conference Paper
(2023)
Selective Competition for NOMA-capable Devices Using RIS.
International Conference on Information Networking.
THAILAND
(2023)
Data Exchange Protocol for Weak Links with Hybrid-RIS in Wireless Networks.
International Conference on Ubiquitous Information Management and Communication.
KOREA, REPUBLIC OF
(2021)
Devices and Backscatter Tag MAC Protocol for an Integrated Wireless Network.
ICOIN.
KOREA, REPUBLIC OF
(2021)
Enhanced Random Access with Beamforming Techniques in 5G Networks.
IMCOM.
KOREA, REPUBLIC OF
(2020)
5G 네트워크 환경에서 랜덤 빔-스위칭을 활용한 랜덤액세스 방법.
한국통신학회 하계종합학술발표회.
KOREA, REPUBLIC OF
(2020)
IoT 무선 네트워크에서의 백스캐터 기반 고효율 통합 프로토콜.
한국통신학회 하계종합학술발표회.
KOREA, REPUBLIC OF
(2020)
주변 단말을 Wi-Fi 활용한 확장 IoT 백스캐터 통신 프로토콜.
한국통신학회 하계종합학술발표회.
KOREA, REPUBLIC OF
(2020)
Communication MAC Protocol for Coexisting Wireless Devices and Backscatter Tags.
IMCOM 2020.
TAIWAN