RESEARCH

WINNER Lab conducts research on wireless communication networks across terrestrial, aerial, and satellite environments. We design communication protocols and resource management algorithms to improve connectivity, service continuity, and network performance. Our current research focuses on LEO satellite communications, 3GPP non-terrestrial networks (NTN), mobility management, and intelligent network control. We also pursue 3GPP standardization, contribute technical proposals to standards development, and develop patents related to standard technologies. Our work builds on research in wireless QoS, MAC protocols, network coding, energy-efficient networking, and security. 

Current Research

• LEO Satellite Communications and 3GPP NTN

  - Network architectures for LEO satellite constellations and satellite-terrestrial integration
  - Initial access, timing synchronization, and Doppler compensation
  - Satellite beam, gateway, and inter-satellite connectivity
  - System-level modeling and performance evaluation of NTN

• Mobility Management and Service Continuity
  
    - Inter-satellite and inter-beam handover in LEO networks
    - Conditional and RACH-less handover for NTN
    - UE context management in regenerative satellite networks
    - Mobility support for disggregated gNB architectures and high-speed users
  
  

• Intelligent Radio Resource Management
  
    - Traffic-aware beam hopping and dynamic resource allocation
    - AI-based scheduling and network optimization
    - RAN/RIC-based resource control
    - QoS and network performance analysis
  
  

• Aerial and Integrated Networks
  
    - Communication networks for UAVs, HAPS, and aerial vehicles
    - Satellite-aerial-terrestrial network integration
    - Link and network performance analysis for high-mobility environments
    - Routing and service continuity across heterogeneous networks
  
  

• Standards and Intellectual Property
  
    - Research and technical proposals for 3GPP NTN standardization
    - Contributions to standards development based on system-level analysis and simulation
    - Development of patents related to wireless communication standards
    - Translation of research outcomes into implementable communication protocols and network technologies

Additional Research Areas

• Wireless QoS and Protocol Design
  
    - Performance analysis on the network coding considering control overhead
    - Protocol design for the application of network coding such in sensor network or satellite network
    - End-to-end QoS provisioning and performance modeling
    - Cross-layer protocol design for multimedia and mobile services
  
  

• Wireless MAC Protocols
  
    - IEEE 802.11/15 protocol design and optimization
    - Full-duplex and high-efficiency WLAN MAC protocols
    - Anti-collision algorithms for RFID systems, Multi-hop wireless communication
  
  

• Network Coding and Energy-Efficient Networking
  
    - Network coding with consideration of control overhead
    - Power-saving protocols for cellular and WLAN systems
  
  

• Wireless Network Security
  
    - Wireless access control and authenticaion
    - Security and traffic analysis in wireless networks