Publications 

Peer-reviewed Journals and Preprints

1. S. S. Hassan, L. X. Nguyen, M. Guizani, L. U. Khan, Z. Han, C. S. Hong, and T. Ratnarajah, “Multi-Source Semantic Communication and Denoising for Non-Terrestrial Networks: Fundamentals, Framework, and Challenges,” IEEE Internet of Things Magazine, Mar. 2026, (Corresponding Author).

2. M. Rahaman, A. Adhikary, T. Debnath, Y. Qiao, S. S. Hassan, M. S. Ahsan, W. Saad, D. Niyato, Z. Han, and C. S. Hong, "ISAC Meets LLMs: Advancing from Sensing to Reasoning with Foundation Models and Flexible Intelligent Metasurfaces", TechRxiv and submitted to IEEE Communications Surveys & Tutorials, Feb. 2026.

3. Y. K. Tun, N. N. Ei, S. S. Hassan, C. Stefanovic, N. Van Huynh, M. Alsenwi, and C. S. Hong, ”Joint Beamforming and Trajectory Optimization for Multi-UAV-Assisted Integrated Sensing and Communication Systems,” IEEE Transactions on Vehicular Technology, Jan. 2026.

4. L. X. Nguyen, S. S. Hassan, Y. M. Park, Y. K. Tun, K. Kim, Z. Han, and C. S. Hong, ”SemSpaceFL: A Collaborative Hierarchical Federated Learning Framework for Semantic Communication in 6G LEO Satellites,” IEEE Transactions on Communications, Nov. 2025.

5. S. S. Hassan, L. U. Tun, Y. M. Park, M. Guizani, Z. Han, T. Ratnarajah, and C. S. Hong,  "Quantum Machine Learning for 6G Space-Air-Ground Integrated Networks: A Comprehensive Tutorial and Survey", IEEE Communications Surveys & Tutorials, Sep. 2025.

6. S. S. Hassan, Y. M. Park, Y. K. Tun, W. Saad, Z. Han, T. Ratnarajah, and C. S. Hong, "Enhancing Spectrum Efficiency in 6G Satellite Networks: A GAIL-Powered Policy Learning via Asynchronous Federated Inverse Reinforcement Learning", arXiv.

7. S. S. Hassan, Y. M. Park, Y. K. Tun, Z. Han, C. S. Hong, and T. Ratnarajah, "Enhancing Remote User Network Experience through Coordinated UAV-Mounted Active and Passive RIS", TechRxiv.

8. L. X. Nguyen, S. S. Hassan, Y. K. Tun, K. Kim, Z. Han, and C. S. Hong,  "Semantic Communication Enabled 6G-NTN Framework: A Novel Denoising and Gateway Hop Integration Mechanism", IEEE Transactions on Wireless Communications, Jun. 2025

9. Y. M. Park, S. S. Hassan, Y. K. Tun, E. N. Huh, W. Saad, and C. S. Hong, "Design Optimization of NOMA Aided Multi-STAR-RIS for Indoor Environments: A Convex Approximation Imitated Reinforcement Learning Approach," IEEE Transactions on Mobile Computing, Mar. 2025. 

10. S. S. Hassan, L. X. Nguyen, Z. Han, C. S. Hong, and T. Ratnarajah, "Enabling Continuous Earth Observation through 6G NTN: Multi-Source Semantic Communication and Denoising," TechRxiv.

11. S. S. Hassan, Y. M. Park, L. X. Nguyen,  Y. K. Tun, Z. Han, and C. S. Hong, "Optimizing Connectivity for Remote Users with RIS-Enabled UAVs: A Game-Theoretic and Whale Optimization Synergy," TechRxiv.

12. L. X. Nguyen, K. Kim, Y. L. Tun, S. S. Hassan, Y. K. Tun, and C. S. Hong, "Optimizing Multi-User Semantic Communication via Transfer Learning and Knowledge Distillation," IEEE Communications Letters, Jun. 2024. (Top 50 Most Popular Articles of IEEE COMML) 

13. S. S. Hassan, Y. M. Park, Y. K. Tun, W. Saad, Z. Han, and C. S. Hong, "SpaceRIS: LEO Satellite Coverage Maximization in 6G Sub-THz Networks by MAPPO DRL and Whale Optimization", IEEE Journal on Selected Areas in Communications, Feb. 2024. (Top 50 Most Popular Articles of IEEE JSAC)

14. U. Majeed, S. S. Hassan, Z. Han, and C. S. Hong, “DAO-FL: Enabling Decentralized Input and Output Verification in Federated Learning with Decentralized Autonomous Organizations”, TechRxiv.

15. L. Zou, M. S. Munir, S. S. Hassan, Y. K. Tun, L. X. Nguyen, and C. S. Hong, “Imbalance Cost-Aware Energy Scheduling for Prosumers Towards eVTOL Charging: A Matching and Multi-agent DRL Approach”,  IEEE Transactions on Vehicular Technology, Oct. 2023. 

16. Y. M. Park, S. S. Hassan, Y. K. Tun, Z. Han, and C. S. Hong, "Joint Trajectory and Resource Optimization of MEC-Assisted UAVs in Sub-THz Networks: A Resources-Based Multi-Agent Proximal Policy Optimization DRL With Attention Mechanism", IEEE Transactions on Vehicular Technology, Sep. 2023. 

17. S. S. Hassan, Y. M. Park, Y. K. Tun, W. Saad, Z. Han, and C. S. Hong, "Satellite-based ITS data offloading \& computation in 6G networks: A cooperative multi-agent proximal policy optimization DRL with attention approach", IEEE Transactions on Mobile Computing, Aug. 2023. (Top 50 Most Popular Articles of IEEE TMC) 

18. L. Zou, M. S. Munir, Y. K. Tun, S. S. Hassan, P. S. Aung, and C. S. Hong, "When Hierarchical Federated Learning Meets Stochastic Game: Toward an Intelligent UAV Charging in Urban Prosumers," IEEE Internet of Things Journal, Jun. 2023. 

19. U. Majeed, L. U. Khan, S. S. Hassan, Z. Han, and C. S. Hong, "FL-Incentivizer: FL-NFT and FL-Tokens for Federated Learning Model Trading and Training", IEEE Access, Jan. 2023. 

20. S. S. Hassan, D. H. Kim, Y. K. Tun, N. H. Tran, W. Saad, and C. S. Hong, "Seamless and Energy-Efficient Maritime Coverage in Coordinated 6G Space–Air–Sea Non-Terrestrial Networks", IEEE Internet of Things Journal, Nov. 2022. 

International Conference Proceedings

1. S. S. Hassan, L. X. Nguyen, Y. K. Tun, Z. Han, and C. S. Hong, “Denoising-enabled semantic communication for robust Earth observation in 6G satellite networks: A Swin transformer approach,” IEEE Wireless Communications and Networking Conference (WCNC), 2026, Kuala Lumpur, Malaysia, (Corresponding Author).

2. S. S. Hassan, A. Adhikary, N. Das, S. Sharma, and T. Ratnarajah, “OTFS-enabled ISAC scheduling for LEO satellites with reconfigurable holographic surfaces using a transformer approach,” IEEE Wireless Communications and Networking Conference (WCNC), 2026, Kuala Lumpur, Malaysia, (Corresponding Author).

3. S. S. Hassan, Y. M. Park, L. X. Nguyen, Y. K. Tun,  C. S. Hong, and T. Ratnarajah, "Sustainable UAV-Mounted Active Reconfigurable Intelligent Surface for Remote User Connectivity via Learning-Based Optimization", IEEE Global Communications Conference (GLOBECOM) Workshop, Taipei, Taiwan, Dec. 2025, (Corresponding Author).

4. Y. K. Tun, N. N. Ei, S. S. Hassan, M. Alsenwi, Č Stefanović, Z. Han, and C. S. Hong, "Energy-Efficient Multi-UAV-Assisted Integrated Sensing, Communication, and Computing for Remote Areas," IEEE Global Communications Conference (GLOBECOM), Taipei, Taiwan, Dec. 2025

5. Y. Tan, S. S. Hassan, T. Ratnarajah, and M. Safari,  "FSO Diversity for RIS-Assisted Non-Terrestrial Networks", IEEE International Conference on Space Optical Systems and Applications (ICSOS), Oct. 2025. 

6. Y. M. Park, S. S. Hassan, W. Saad, and C. S. Hong, "Cross-modal Knowledge Distillation for Efficient Radar-Only Beam Prediction in mmWave Communications," IEEE 26th International Workshop on Signal Processing and Artificial Intelligence in Wireless Communications, Surrey, UK, Jul. 2025. 

7. S. S. Hassan, Y. M. Park, Z. Han, and T. Ratnarajah, "Spectrum Efficiency Optimization in 6G Satellite Networks: An Inverse Reinforcement Learning Approach," IEEE International Conference on Machine Learning for Communication and Networking (ICMLCN), Barcelona, Spain, May. 2025, (Corresponding Author).

8. M. Gain, A. D. Raha, A. Adhikary, S. S. Hassan, and C. S. Hong, ”Fortifying Lifelong Security for O-RAN Ecosystem: An Incremental Learning Framework for NextG Seamless Networking,” International Conference on Information Networking (ICOIN), Chiang Mai, Thailand, Jan. 2025.

9. S. S. Hassan, L. X. Nguyen, Z. Han, and C. S. Hong, ”Semantic Enabled 6G LEO Satellite Communication for Earth Observation: A Resource-Constrained Network Optimization,” IEEE Global Communications Conference (GLOBECOM), Cape Town, South Africa, Dec. 2024

10. N. N. Ei, S. S. Hassan, Y. K. Tun, Z. Han, and C. S. Hong, ”Novel Aerial User Equipment Task Offloading Optimization in Integrated 6G Terrestrial and Non-Terrestrial Networks: A Deep Reinforcement Learning Approach,” IEEE Global Communications Conference (GLOBECOM), Cape Town, South Africa, Dec. 2024

11. S. S. Hassan, U. Majeed, Z. Han, and C. S. Hong, "SFL-LEO: Secure Federated Learning Computation Based on LEO Satellites for 6G Non-Terrestrial Networks", IEEE/IFIP Network Operations and Management Symposium (NOMS), Miami, FL, USA, May 2023.

12. L. Zou, S. S. Hassan, Y. K. Tun, Z. Han, and C. S. Hong, "Energy Efficient Leaderless Softwarized UAV Network: Joint Intelligent User Association and Resource Allocation Design", IEEE/IFIP Network Operations and Management Symposium (NOMS), Miami, FL, USA, May 2023.

13. S. S. Hassan, S. B. Park, E. N. Huh and C. Seon Hong, "Seamless and Intelligent Resource Allocation in 6G Maritime Networks Framework via Deep Reinforcement Learning",  International Conference on Information Networking (ICOIN), Bangkok, Thailand, Jan. 2023.

14. S. S. Hassan, Y. M. Park, K. Kim, S. Hoon Hong, and C. Seon Hong, "Seamless and Efficient Resources Allocation in 6G Satellite Networks Servicing Remote User Equipments," International Conference on Information Networking (ICOIN), Bangkok, Thailand, Jan. 2023.

15. Y. M. Park, S. S. Hassan, and C. S. Hong, "Maximizing Throughput of Aerial Base Stations via Resources-based Multi-Agent Proximal Policy Optimization: A Deep Reinforcement Learning Approach", 23rd Asia-Pacific Network Operations and Management Symposium (APNOMS), Takamatsu, Japan, Sep. 2022.

16. S. S. Hassan, D. U. Kim, S. W. Kang, and C. S. Hong, "Energy-Efficient IoE Networks Deployment for Future Smart Cities", 23rd Asia-Pacific Network Operations and Management Symposium (APNOMS), Takamatsu, Japan, Sep. 2022.

17. S. S. Hassan, Y. M. Park, Y. K. Tun, W. Saad, Z. Han, and C. S. Hong, "3TO: THz-Enabled Throughput and Trajectory Optimization of UAVs in 6G Networks by Proximal Policy Optimization Deep Reinforcement Learning", IEEE International Conference on Communications (ICC), Seoul, Republic of Korea, May 2022.

18. Y. M. Park, S. S. Hassan, Y. K. Tun, Z. Han, and C. S. Hong, "Joint Resources and Phase-Shift Optimization of MEC-Enabled UAV in IRS-Assisted 6G THz Networks", IEEE/IFIP Network Operations and Management Symposium (NOMS), Budapest, Hungary, Apr. 2022.

19. S. S. Hassan, Y. K. Tun, W. Saad, Z. Han, and C. S. Hong, "Blue Data Computation Maximization in 6G Space-Air-Sea Non-Terrestrial Networks", IEEE Global Communications Conference (GLOBECOM), Madrid, Spain, Dec. 2021.

20. S. S. Hassan,  Y. M. Park, and C. S. Hong, "On-Demand MEC Empowered UAV Deployment for 6G Time-Sensitive Maritime Internet of Things", 22nd Asia-Pacific Network Operations and Management Symposium (APNOMS), Tainan, Taiwan, Sep. 2021.

21. S. S. Hassan,  U. Majeed, and C. S. Hong, "Reliable Integrated Space-Oceanic Network Profit Maximization by Bender Decomposition Approach", International Conference on Information Networking (ICOIN), Jeju Island, Republic of Korea, Jan. 2021.

22. U. Majeed, S. S. Hassan, and C. S. Hong, "Cross-Silo Model-Based Secure Federated Transfer Learning for Flow-Based Traffic Classification", International Conference on Information Networking (ICOIN), Jeju Island, Republic of Korea, Jan. 2021.

23. S. S. Hassan,  S. W. Kang, and C. S. Hong, "Unmanned Aerial Vehicle Waypoint Guidance with Energy Efficient Path Planning in Smart Factory", 20th Asia-Pacific Network Operations and Management Symposium (APNOMS), Matsue, Japan, 2019.

Patents

1. Intelligent Transportation System Using a Multi-Layer Satellite and Communication Method

Inventors: Choong Seon Hong, Sheikh Salman Hassan, Yu Min Park
Patent Number: US20250096888A1
Application Submitted: March 20, 2025
Patentee: Kyung Hee University Industry–Academy Collaboration Foundation

2. Marine Communication System Based on Low-Orbit Satellite and Unmanned Aerial Vehicle
   Inventors: Choong Seon Hong, Sheikh Salman Hassan, Seok Won Kang
   Patent Number: US11705962B2
   Registration Granted: July 18, 2023
   Patentee: Kyung Hee University Industry–Academy Collaboration Foundation
   
   

3. A Method for Brokering Electric Vehicle Charging Services in a Prosumer Community
   Inventors: Choong Seon Hong, Luyao Zou, Sheikh Salman Hassan, Dong Uk Kim
   Application Number: KR 1020230090919 (July 13, 2023)
   Unexamined Publication Number: KR 1020240072012 (May 23, 2024)
   Priority: Republic of Korea, KR 1020220152748 (November 15, 2022)
   Patentee: Kyung Hee University Industry–Academy Collaboration Foundation
   
   

4. Intelligent Transportation System Using Multi-Layer Satellites
   Inventors: Choong Seon Hong, Sheikh Salman Hassan, Yu Min Park
   Application Number: KR 1020230125939 (September 20, 2023)
   Unexamined Publication Number: KR 1020250042616 (March 27, 2025)
   Patentee: Kyung Hee University Industry–Academy Collaboration Foundation
   
   

5. A Low-Orbit Satellite-Based Communication and Computing Device Performance Method
   Inventors: Choong Seon Hong, Sheikh Salman Hassan, Sung-Bae Park, Yu Min Park
   Application Number: KR 1020230029490 (March 6, 2023)
   Unexamined Publication Number: KR 1020240071265 (May 22, 2024)
   Priority: Republic of Korea, KR 1020220152733 (November 15, 2022)
   Patentee: Kyung Hee University Industry–Academy Collaboration Foundation
   
   

6. Marine Communication System Based on Low-Orbit Satellite and Unmanned Aerial Vehicle
   Inventors: Choong Seon Hong, Sheikh Salman Hassan, Seok Won Kang
   Registration Number: KR 1024192380000 (July 6, 2022)
   Priority: Republic of Korea, KR 1020190152528 (November 25, 2019)
   Patentee: Kyung Hee University Industry–Academy Collaboration Foundation

Domestic (National) Conferences

Presented 13 papers at domestic conferences, including the Korea Computer Congress (KCC) and the Korea Software Congress (KSC), both organized by the Korean Institute of Information Scientists and Engineers (KIISE), and the proceedings can be found on DBpia.