Computer Engineering

The Database Laboratory works on future database systems including embedded DBMSs based on flash memory, telematics, web databases, XML databases, location based services and so on.
Currently, our research projects are related to the following topics:

• Flash memory storages
• Telematics systems
• XML Databases
• Intelligent agent systems in military applications
• Location-based queries in the road network

The FAST Lab, a part of Graduate School of Computer Engineering at Ajou University was founded by Prof. Youngjae Kim in fall 2015. We investigate a wide spectrum of design and implementation challenges for IoT, Cloud, Big Data and Mobile Platforms with an emphasis on performance optimization of system software and middleware for applications. We also research on next generation non-volatile memory and storage system technologies, distributed file systems, and integrated technologies of memory and storage in both operating systems and distributed computing systems.

Recently FAST lab has been awarded the research grant (period: 2015-2019) for developing a High-Performance Big Data platform by Ministry of Science, ICT, and Future Planning (MSIP) in collaboration with leading organizations of UNIST and KISTI.

We has the following trust areas.

• File and Storage Systems
• Distributed File Systems (Lustre, Ceph)
• Big Data Platform
• Computer Architecture
• Operating Systems

We research Tactical Communication Networks and 4G Mobile Communication Networks based on knowledge about PHY, MAC, and Network layers of Wireless/ Mobile/ Tactical Communications. Now we are performing the ITRC project from the Ministry of Knowledge Economy, and some other projects from government and industries. The ITRC (Information Technology Research Center) project is an essential project to train highly skilled students and improve base technology for the national IT area.

In the Tactical Communication Area:

• Airborne Communication Network: MAC/PHY techniques for airborne communication networks such as Link-16, Next Generation Tactical Data Link, Korea Tactical Data Link, and VDL (VHF Data Link)
• Army Tactical Information Communication Network: MAC techniques for terrain networks, Transmission control techniques for tactical mesh networks, IPv6 for tactical networks
• Satellite communication: Resource management schemes in a MF-TDMA satellite network, Handover algorithms in a multi-beam satellite network.

In the 4G Communication Area

• High-speed OFDMA MAC for WiBro (WiMAX) system
• Efficient routing techniques for wireless mesh networks
• High-speed, high-reliability multiple access techniques for WPAN or WLAN

The Knowledge-intensive Software Engineering (NiSE) Research Group performs various researches to improve understanding, representing, and modeling of the complex problem domain from the universe of discourse (UoD), for the design, development and analysis of the software-intensive systems within socio-technical environments, with an emphasis on delivering state-of-the-art research and transferring innovative ideas into practice, by supporting all aspects of requirements engineering in knowledge-intensive software engineering process, for designing and building the next generation software systems.

Research Area:

• Ontology-based Requirements Engineering
• Critical Infrastructure Protection Domain Modeling & Simulation
• Software Verification and Validation
• Software-intensive Systems
• Knowledge Engineering
• Secure Software Assurance
• Information Security & Assurance
• Human Computer Interaction

WISE Lab focuses on creating the technology infrastructure and applications that will help to solve important problems in the next generation distributed systems/services. Our current major area of interest is a large scale software system including Web system, Grid computing, High Performance/Parallel Computing and Cloud Computing.

The list of selected on-going research:

• Improving Hadoop MapReduce Performance In Heterogeneous Environment
• Efficient and Scalable RDF Management System
• High Performance 3D Point Cloud Data Processing Heterogeneous Multicore System
• Energy Efficient Multisite Offloading Algorithm for Mobile Cloud

The Digital Vaccine & Internet Immunce System Lab(DV&IIS Lab) focuses on malicious code(e.g.virus, worm, and backdoor) detection / prevention, anonymity-based privacy protection, DoS/DDoS, and authentication / access control. We handle these issues not only in the internet environment but also in the community computing environment.

Mobile PLANETs Lab conduct research on all mobile-related issues such as mobile platform, network, security, and service, inheriting former Wireless Networks Lab, since 2010 at Ajou University, Korea. We especially focus on battery-efficient systems and protocols for 5G mobile services by looking at joint management of radio, network and CPU resources based on state-of-the-art techniques: multicore scheduling, machine learning, dynamic spectrum access, multimedia service, and D2D.

Research Areas:

• Mobile Wireless Networks: LTE-A, 5G, D2D, Dynamic Spectrum Access, Tactical Networks, Sensor Networks, Wi-Fi, SDN
• Mobile Network Protocols: Battery-Efficient MAC and TCP
• Mobile Power Management: DVFS, Multicore scheduling
• Mobile Platform and Security: Mobile Middleware Security, Network Security
• Mobile Service: VoLTE, DASH, IMS, Quality Assessment

The Distributed & Mobile Computing Lab. is pursuing high quality research in the general areas of Distributed Systems and Mobile Computing. The main topics of Research are Ubiquitous Computing, Ubiquitous Monitoring Systems, Ubiquitous Transportation, embedded Systems for home Networking, and Mobile Computing in Ad hoc & Sensor Networks. The Distributed & Mobile Computing Lab. is participating in many projects which are sponsored by the Ministry of Knowledge Economy, Korea Research Foundation, and the Ministry of Land Transport and Maritime Affairs.

The Distributed & Mobile Computing Lab. is pursuing high quality research in the general areas of Distributed Systems and Mobile Computing. The main topics of Research are Ubiquitous Computing, Ubiquitous Monitoring Systems, Ubiquitous Transportation, embedded Systems for home Networking, and Mobile Computing in Ad hoc & Sensor Networks. The Distributed & Mobile Computing Lab. is participating in many projects which are sponsored by the Ministry of Knowledge Economy, Korea Research Foundation, and the Ministry of Land Transport and Maritime Affairs.

We focus on the field of an effective development method for large-scale software systems such as ubiquitous systems, intelligent transportation systems, military systems, etc. Research interests include new application models, frameworks, and development methods for large-scale software systems. For research, we have proposed a community computing model for effectively developing dynamic ubiquitous applications based on the metaphor of community. Currently, we are trying to develop a role-based application model and its implementation framework which will be applied to various areas including ubiquitous applications, social network services, military applications, etc. We are also interested in the area of information transportation systems, in which we study a way of improving safety using advanced technologies such as ubiquitous networks, agent systems, etc.

The UbiNeS (Ubiquitous Networked System) Lab aims on performing research on internationally competitive technologies and practical achievements on applied research under Professor Young-Bae Ko. Currently, the UbiNeS lab has been actively engaged in these researches, producing numerous domestic and international SCI journals and conference papers. The UbiNeS will continue to devote their best to become the research group that can lead the future ubiquitous world.

[Main Research Items]

• Ubiquitous Sensor Networks (USN)
• Ad-hoc/ Mesh Networks and Wireless LAN systems
• Wireless security and Mobile Computing.

[Research Projects]

• Next generation military defence (u-Defence)
• Intelligent Vehicular Communication systems (u-ITS)
• Ubiquitous Medical (u-Medical)
• Contents Centric Networks (CCN)
• Future Internet

The Mobile Multimedia Communication and Network Lab at Ajou University was established to lead worldwide in the research areas of mobile multimedia on integrated wired/ wireless, and converged communication/ broadcast networks. We use the OPNET Modeler for our research, which is broadly used in the field of Military R&D in Korea and the USA.

Our major research interests include:

• Mobile Multimedia Communication Protocol and Service
• Wired/ Wireless Network QoS (Quality of Service)
• Next Generation Tactical Communication Networks (TCN)
• Secure Routing for Mobile Multimedia Services in Wired/ Wireless Networks
• Network Security Issues

Especially, we currently study:

• Cognitive Radio issues on Tactical Networks
• Content-Centric Networks (CCN) for Future Internet Architecture
• Network Infrastructure Protection and Security in the field of SIP and P2P Overlay Network

The AI (Artificial Intelligence) Lab has worked for Knowledge Representation and Reasoning, Information Retrieval, Ontology Engineering, and Intelligent Agent. Presently, we focus on community computing model and its application for ubiquitous computing environment, and develop a knowledge-based agent system for intelligent information processing in military domain.

Research Area:

• Knowledge representation & reasoning
• Information retrieval
• Ontological engineering
• Knowledge-based systems
• Probabilistic reasoning
• Intelligent agent
• Machine learning & knowledge acquisition

Since 1997, The Internet Security Laboratory has conducted research about network security and development of access control models under Professor Hong-jin Yeh at Ajou University.

We have enhanced study of access control modeling and information system development, which will be proper in ubiquitous environments from now on, together with detection and prevention of invasion through networks. Now we are researching security among sensor networks. We have produced many papers from research issues. We are performing module development and application possible security methods. The main issue of this laboratory is general understanding about sensor networks and each level of communication and deducing security problems in communication and service; after all, we are trying to find solutions and techniques to deal with these problems.

The Information Communication & Security (ICS) laboratory started in 1985 on the basis of history and tradition of Professor Kim Dongkyoo, and has been carrying out research about convergence security since 2011 by Professor Shon Taeshik. The main research fields of our lab are Secure Charging Systems for Electric Vehicles, Digital Forensics, Smart grid Security, Anti-dump Memory Protection, Open Mobile Platform Security, Cloud computation Platform and Service Security, Abnormal Behavior Detection, etc.