Portfolio

Jongtae Lee, Yujeong Ahn and Jae-Hyun Kim, "Geometry-Aware Time-Window Conditional Handover for Non-Terrestrial Networks," IEEE CCNC Workshop on Cooperative Multi-orbit Platform for Accessible Satellite Communication System (COMPASS), accepted (Nov., 2025.)

Jongtae Lee, and Jae-Hyun Kim, "A Geodesic Distance-based Conditional Handover Strategy for LEO Satellite-based Non-Terrestrial Networks," IEEE Transactions on Vehicular Technology, Submitted (May, 2025.)

Jongtae Lee, Yujoung Ahn, and Jae-Hyun Kim, "Mobility Aware Timer-based Conditional Handover for LEO Satellite Networks," IEEE APWCS 2025, Tokyo, Japan, Aug. 2025.

Jongtae Lee, Won-Jae Lee, and Jae-Hyun Kim, "Enhancement of RACH-less CHO in LEO Satellite Communication Systems," in Proc. KICS ICTC 2024, Jeju, Republic of Korea, Oct. 2024.

Jongtae Lee, Yujoung Ahn, Jaeyeol Lee, Won-Jae Lee, and Jae-Hyun Kim, "WIP: Analysis of Distance-based Handover Parameters in LEO Satellite Communications," in Proc. IEEE ICMIC 2024, Kuala Lumpur, Malaysia, Aug. 2024.

Jongtae Lee, Won-Jae Lee, and Jae-Hyun Kim, "Performance Analysis of Low-Earth Orbit Satellite Handover Mechanism to Reduce Signaling Overhead, " in Proc. JCCI 2024, Busan, Republic of Korea, Apr. 2024.

Jongtae Lee, Won-Jae Lee, and Jae-Hyun Kim, "Performance Analysis of Conditional RACH-less Handover in Low Earth Orbit Satellite Networks," in Proc. KIEES winter conference 2024, Jeju, Republic of Korea, Feb. 2024.

Jongtae Lee, Won-Jae Lee, and Jae-Hyun Kim, "Performance Evaluation of Location-based Conditional Handover Scheme using LEO Satellites," in Proc. KICS ICTC 2023, Jeju, Republic of Korea, Oct. 2023.

Jongtae Lee, Jina Yu, Won-Jae Lee, and Jae-Hyun Kim, "Performance Analysis of Distance-based Conditional Handover in LEO Satellite Communication System," in Proc. KICS summer conference, Jeju, Republic of Korea, Jun. 2023.

Jongtae Lee, Sangmin Han, Jaeyeol Lee, Jina Yu, and Jae-Hyun Kim, "Analysis of Constellation Type for LEO Satellite Network Service in Korea, " in Proc. KICS winter conference, Yongpyeong, Republic of Korea, Feb. 2023.

Yujeong Ahn, Jongtae Lee, and Jae-Hyun Kim, "Timing Advance Estimation for LEO-based NTN with Regenerative Payloads," in Proc. IEEE APWCS 2025,  Tokyo, Japan, Aug. 2025.

Habeen Oh, Min-Sik Kim, Jaeyeol Lee, Jongtae Lee, and Jae-Hyun Kim, "Performance Analysis of Feeder Link Switchover in a Multiple Satellites-Multiple Gateway Environment, " in Proc. JCCI 2025, Sokcho, Republic of Korea, Apr. 2025.

Yujeong Ahn, Jongtae Lee, Habeen Oh, and Jae-Hyun Kim, "Analysis of Low-Earth Orbit Satellite Communication Uplink Synchronization Performance using Timing Advance Prediction," in Proc. KICS winter conference,  Yongpyeong, Republic of Korea, Feb. 2025.

Jae-Yeong, Taehan Moon, Heonwoo Chu, Jongtae Lee, and Jae-Hyun Kim, "Analysis of LEO Satellite Signal Strength Considering Monthly Weather-Based Atmospheric Attenuation,"  in Proc. KICS winter conference,  Yongpyeong, Republic of Korea, Feb. 2025.

Habeen Oh, Jihong Park, Jongtae Lee, and Jae-Hyun Kim, "Ground Station Cooperation-Based Low Earth Orbit (LEO) Satellite Orbit Error Correction Deep-Learning Model,"  in Proc. KICS fall conference,  Gyeongju, Republic of Korea, Oct. 2025.

Yujeong Ahn, Jongtae Lee, Tae-Yoon Kim, and Jae-Hyun Kim, "Performance Evaluation of Distance-Based Handover using LSTM in LEO-based NTN," in Proc. ICTC 2024, Jeju, Korea, Oct. 2024.

Jaeyeol Lee, Won-Jae. Lee, Jongtae Lee, and Jae-Hyun Kim, "Performance Analysis of Multiple High-Altitude Platform Stations According to Architecture," in Proc. ICMIC 2024, Kuala Lumpur, Malaysia , Aug. 2024.

Yujeong Ahn, Jongtae Lee, and Jae-Hyun Kim, "Performance Analysis of Distance-Based Handover According to Dynamic Offset in LEO Satellite Communication System, " in Proc. JCCI 2024, Busan, Republic of Korea, Apr. 2024.

Jihong Park, Jongtae Lee, Tae-Yoon Kim, and Jae-Hyun Kim, "Deep Learning-Based Starlink Satellite Orbit Error Correction and Communication Performance Analysis, " in Proc. JCCI 2024, Busan, Republic of Korea, Apr. 2024.

Jihong Park, Jongtae Lee, Tae-Yoon Kim, and Jae-Hyun Kim, "Deep Learning-Based Long-Term Satellite Orbit Error Correction Model using a Single Two-Line Element Data," in Proc. KICS winter conference,  Yongpyeong, Republic of Korea, Feb. 2024.

Heonwoo Chu, Sangmin Han, Jongtae Lee, and Jae-Hyun Kim, "Polar Region Boundary Analysis with ISL Connectivity in LEO Satellite Constellation," in Proc. KICS fall conference,  Gyeongju, Republic of Korea, Nov. 2024.

Yujeong Ahn, Jongtae Lee, Jina Yu, and Jae-Hyun Kim, "Performance Analysis of Conditional Handover according to Triggering Method in LEO Satellite Communication Environment," in Proc. KICS fall conference,  Gyeongju, Republic of Korea, Nov. 2024.

Jihwan Kim, Seungwon Yang, Dongjun Lee, Jongtae Lee, and Jae-Hyun Kim, "Analysis of Golf Swing Speed and Shaft Recommendation Algorithm using CNN, " in Proc. KICS fall conference,  Gyeongju, Republic of Korea, Nov. 2024.

Dohyun Lee, Sunghoon Kim, Jongtae Lee, Won-Jae Lee, and Jae-Hyun Kim, "Deep Learning based Handover Decision Technique in Low-Earth Orbit Satellite Communication," in Proc. KICS fall conference,  Gyeongju, Republic of Korea, Nov. 2024.

Seungwoo Oh, Sangjun Lee, Jongtae Lee, and Jae-Hyun Kim, "Analysis of Connection Time Based on Elliptical Orbits in LEO Satellite Communication Systems, " in Proc. KICS fall conference,  Gyeongju, Republic of Korea, Nov. 2024.

Won-Jae Lee, Jongtae Lee, and Jae-Hyun Kim, "Performance Evaluation of Multi-Attribute Conditional Handover in LEO Satellite Networks," in Proc. IEEE APWCS 2023, Tainan, Taiwan, Aug. 2023.

Jina Yu, Jongtae Lee, and Jae-Hyun Kim, "Conditional Handover Performance Analysis of L EO S atellite according to Timer - based Handover Triggering Method, " in Proc. JCCI 2023, Yeosu, Republic of Korea, Apr. 2023.

Jongtae Lee; Won-Jae Lee; Jae-Hyun Kim; Tae-Yoon Kim; Jaeyeol Lee,  "APPARATUS AND METHOD FOR MANAGING INTERFACE BETWEEN BASE STATIONS IN WIRELESS COMMUNICATION SYSTEM (무선 통신 시스템에서 기지국 간 인터페이스를 관리하기 위한 장치 및 방법)",  Korean Patent Application, Filing Date: Oct. 27, 2025, Application No.: 10-2025-0156672

Jongtae Lee; Won-Jae Lee; Jae-Hyun Kim; Tae-Yoon Kim; Jaeyeol Lee,  "APPARATUS AND METHOD FOR OBTAINING SYSTEM INFORMATION OF NEIGHBOR BASE STATIONS IN WIRELESS COMMUNICATION SYSTEM (무선 통신 시스템에서 주변 기지국의 시스템 정보를 획득하기 위한 장치 및 방법)",  Korean Patent Application, Filing Date: Oct. 28, 2025, Application No.: 10-2025-0157498

Jongtae Lee; Jae-Hyun Kim; Jaeseung Shin; Sungmin Oh, "Method and Apparatus for Managing INACTIVE UEs Depending on Inter-Satellite Link Status in Regenerative Payload-based Non-Terrestrial Networks (재생 중계 페이로드의 비지상 네트워크 환경에서 위성 간 링크 여부에 따른 INACTIVE 단말 관리 방법 및 장치)", Korean Patent Application, Filing Date: Feb. 7, 2025, Application No.: 10-2025-0015880

Jongtae Lee; Jae-Hyun Kim; Jaeseung Shin; Yuseon Hwang; Sungmin Oh; Moonsik Lee; Yujeung Ahn, "Context Information Management Method for INACTIVE UEs in Non-Geostationary Regenerative Satellite Environments (비정지궤도 재생 위성환경에서 비활성화 단말의 컨텍스트 정보 운영 방법)", Korean Patent Application, Filing Date: Feb. 6, 2025, Application No.: 10-2025-0015330

Jongtae Lee; Won-Jae Lee; Jae-Hyun Kim; Tae-Yoon Kim; Jaeyeol Lee, "Apparatus and Method for Performing Connection Reestablishment in a Wireless Communication System (무선 통신 시스템에서 연결 재설정을 수행하기 위한 장치 및 방법)", International Patent (PCT), Filing Date: Nov. 28, 2024, Application No.: PCT/KR2024/019019

Jongtae Lee; Won-Jae Lee; Jae-Hyun Kim, "Apparatus and Method for Performing Group Handover in a Wireless Communication System (무선 통신 시스템에서 그룹 핸드오버를 수행하기 위한 장치 및 방법)", International Patent (PCT), Filing Date: Nov. 21, 2024, Application No.: PCT/KR2024/018456

Jongtae Lee; Won-Jae Lee; Jae-Hyun Kim; Tae-Yoon Kim; Jaeyeol Lee, "Apparatus and Method for Performing Connection Reestablishment in a Wireless Communication System (무선 통신 시스템에서 연결 재설정을 수행하기 위한 장치 및 방법)", Korean Patent Application, Filing Date: Nov. 8, 2024, Application No.: 10-2024-0157537

Jongtae Lee; Won-Jae Lee; Jae-Hyun Kim, "Apparatus and Method for Performing Group Handover in a Wireless Communication System (무선 통신 시스템에서 그룹 핸드오버를 수행하기 위한 장치 및 방법)", Korean Patent Application, Filing Date: Oct. 13, 2025 (Nov. 4, 2024), Application No.: 10-2872148 (10-2024-0154724)

Jongtae Lee; Won-Jae Lee; Jae-Hyun Kim; Tae-Yoon Kim; Jaeyeol Lee,  "Method and Apparatus for Inter-Base Station Information Exchange in a Wireless Communication System (무선 통신 시스템에서 기지국 간 정보 교환 방법 및 장치)",  Korean Patent Application, Filing Date: Oct. 28, 2024, Application No.: 10-2024-0148839

Jongtae Lee; Jangmyun Kim; Youngpo Kim; Donguk Kim; Taeseok Oh; Tae-Yoon Kim; Jihong Park; Yujeung Ahn; Jae-Hyun Kim, "Method and Apparatus for Predicting Satellite Position Based on Orbital Unit Data (단위 궤도 데이터를 기초로 위성의 위치를 예측하기 위한 방법 및 장치)", Korean Patent Application, Filing Date: Jun. 12, 2024, Application No.: 10-2024-0076539

Jongtae Lee; Won-Jae Lee; Jae-Hyun Kim, "Apparatus and Method for Performing Group Handover in a Wireless Communication System (무선 통신 시스템에서 그룹 핸드오버를 수행하기 위한 장치 및 방법)", Korean Patent Application, Filing Date: Nov. 30, 2023, Application No.: 10-2023-0170921

Jongtae Lee; et al., "Safety management system for safety of worker during road construction (도로에서의 공사 중 작업자의 안전을 위한 안전 관리 시스템)", Korean Patent Application, Filing Date: Sep. 19, 2023 (May 18, 2021), Application No.: 10-2581604 (10-2022-0156322)

“Discussion on Support of Inactive UE in NTN,” 3GPP RAN3 Meeting #127, Agenda 14.3 (NR-NTN Support), TDoc: R3-250583,  ETRI and Ajou Univ., Feb. 2025.

“Discussion on Support of Inactive UE in NTN,” 3GPP RAN3 Meeting #127bis, Agenda 14.3 (NR-NTN Support), TDoc: R3-252099,  ETRI and Ajou Univ., Apr. 2025.

IEEE VTS Asia Pacific Wireless Communications Symposium 2023, Seoul Chapter Award

KICS Fall Conference 2023, 학부 우수논문 장려상