Internet Architecture and Systems

Research Staff

  • Prof. Kazutoshi Fujikawa

    Kazutoshi Fujikawa

  • Assoc.Prof. Ismail Arai

    Ismail Arai

  • Assist.Prof. Masatoshi Kakiuchi

    Masatoshi Kakiuchi

  • Assist.Prof. Akira Yutani

    Akira Yutani

E-mail inet-info [at]

Research Area

Pervasive Computing / Ubiquitous Computing

In the environment which every thing in the real space is connected to the network (IoT, M2M environment, ) the information system analyzes and understands the sensor data then controls remote devices and presents useful decision making information.

Public transportation big data analysis (ex. driving analysis)

Indoor localization utilizing environment sensors and smartphone mounted sensors together

Fog computing (Optimization of computing resource allocation for smart city)

Disaster relief computing / networking

In large-scale disasters such as communication infrastructure being cut off, the use of satellite communication system becomes extremely important. We are conducting R & D on communication methods that make maximum use of limited resources of low bandwidth / high latency satellite lines. At the time of the initial disaster occurrence, on-site staff need to devote themselves to disaster response, and we are also discussing ways to provide the environment where terminals can be normally used as they are.

Operations technology for data center and network

We are working on the operations technologies for data center that is progressing with higher performance and higher density with the spread of cloud computing. In particular, we are studying on the following technologies on data management for online storage which stores and shares data on network, resource management and operations support for cloud service infrastructure and routing control for network traffic.

Network storage system adapting to data properties (object storage, distributed storage, access control)

Technologies for virtual machine placement, data placement, traffic control and operations support considering energy saving and load balancing

Next-generation traffic engineering for safe and effective data transport (IPv6 site multihoming, network auto configuration)

Technologies for IPv4-IPv6 transition and IPv6 deployment

Cyber Security

Devices which is connected to the Internet are always threatened with malware and DoS attacks.
With the spreading of IoT or M2M technologies, it is important to care about vulnerabilities of various devices such as automobiles, robots, sensor nodes, etc. as well as servers and PCs.

DoS attack of industrial network and devices

Car security

Malware analysys

Transmission system using IP network of super realistic feeling space

Utilizing the method of transmitting super high definition 4K / 8K video and stereophonic sound using ultra high speed IP network, we are studying video / sound / IP network with the goal of forming a super-realistic space comparable to the real space in a remote place.

Utilization of uncompressed video data for high quality / low latency

IP network routing control method for high reliability

Adaptive use of compressing video data

Approach to medical, museum, planetarium, etc.

Application to digital library system

Key Features

In our laboratory, students can study a variety of topics concerned with computer networks, from the network layer to the application layer. The strength of our laboratory is that students have opportunities to perform their research using actual computer network environments because all faculty members are engaged in the Information Initiative Center (ITC) of NAIST. Additionally, in some cases we develop devices to create appropriate research environments. Our laboratory welcomes students of all levels of expertise, providing seminars on basic theoretical and practical studies as well as advanced areas.

Fig.1 Pervasive Computing / Ubiquitous Computing

Fig.1 Pervasive Computing / Ubiquitous Computing

Fig.2 Disaster relief computing / networking

Fig.2 Disaster relief computing / networking

Fig.3 Operations technology for data center and network

Fig.3 Operations technology for data center and network

Fig.4 Cyber Security

Fig.4 Cyber Security

Fig.4  Transmission system using IP network of super realistic feeling space

Fig.4 Transmission system using IP network of super realistic feeling space