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Laboratory location

Sugimoto Campus

Degree 【 display / non-display

  • Kyoto University -  Doctor of Informatics

  • Kyoto University -  Master of Engineering

Research Areas 【 display / non-display

Information network

Research Career 【 display / non-display

  • Computer Networks and Distributed Processing


    Keyword in research subject:  computer networks

Association Memberships 【 display / non-display


  • The Institute of Electrical and Electronics Engineers, Inc

  • ACM

  • The Institute of Electronics, Information and Communication Engineers

Awards & Honors 【 display / non-display

  • IPSJ Best Paper Award


  • The 1st International Conference on Advances in P2P Systems (AP2PS 2009) Best Paper Award


  • AP2PS 2010 Best Paper Award


Current Career 【 display / non-display

  • Osaka City University   Graduate School of Engineering   Physical Electronics and Informatics Course   Professor  

  • Osaka City University   Center for Information Initiative (CII)  

  • Osaka City University   Media Center   Professor  

Graduate School 【 display / non-display


    Kyoto University  Graduate School, Division of Engineering 

Graduating School 【 display / non-display


    Kyoto University   Faculty of Engineering  


Published Papers 【 display / non-display

  • Proposal of a Load Test Generation System for Web Services Using QA Test Access Logs

    Akita Shibata, Hayato Ishibashi

    2020   103 - 104 2020.11  [Refereed]

  • A Study of Online Academic Research Meeting Operation

    Hajime Shimada, Hiroki Kashiwazaki, Minoru Ikebe, Yoshiaki Kitaguchi, Nariyoshi Yamai, Shiu Sakashita, Toshio Murakami, Dai Ishijima, Hayato Ishibashi, Akira Sato, Yutaka Nakamura, Haruhisa Hayashi, Naoto Matsumoto, Mishima Kazuhiro, Makoto Otani, Hideo Masuda, Kensuke Miyashita

    The Special Interest Group Technical Reports of IPSJ (IOT)  2020-IOT-49 ( 6 ) 1 - 8 2020.05

  • Design of a User-Friendly OpenFlow-based Virtual Network Architecture for Large-Scale Organizations

    Ayumu Koga, Hayato Ishibashi

    The Special Interest Group Technical Reports of IPSJ  2019-IOT-44 ( 48 ) 1 - 6 2019.02

  • OpenFlowとハニーポットを用いたSSHログイン攻撃防止手法の提案と実装 (インターネットアーキテクチャ)

    薛 微微, 石橋 勇人

    一般社団法人電子情報通信学会 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報  114 ( 495 ) 13 - 18 2015.03  [Refereed]

     View Summary



  • A Proposal and Evaluation of a Method of Constructing Routing Tables With Configurable Max Path Length or Routing Table Size

    Seung-eon Oh, Kota Abe, Hayato Ishibashi, Toshio Matsuura

    The IEICE Transactions on Communications (Japanese Edition)  J97-B ( 10 ) 849 - 860 2014.10

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Conference Activities & Talks 【 display / non-display

  • Design of a User-Friendly OpenFlow-based Virtual Network Architecture for Large-Scale Organizations

    Ayumu Koga, Hayato Ishibashi

    IPSJ SIGIOT  2019.03 

  • Design and Implementation of an SSH Server Protection System using OpenFlow and Honeypots


  • Aggregation Skip Graph: A Skip Graph Extension for Efficient Aggregation Query

    The 2nd International Conference on Advances in P2P Systems  2010.10 

Grant-in-Aid for Scientific Research 【 display / non-display

  • Study on a Cooperative Distributed Caching Method for DTN Clusters

    Project/Area Number : 24500090  Grant-in-Aid for Scientific Research(C) Representative

    Project Year :


    Partaker : MATSUURA Toshio, ABE Kota, Guō ShìXiáng

     View Summary

    This study proposed a method to efficiently utilize resources of a group of mobile phones as a whole cluster. A mobile phone is supposed to use long range communication technology such as 3G, LTE and WiMAX as well as short range communication technology such as Wi-Fi and Bluetooth. Mobile phones gathering in a relatively small area are making a cluster autonomously by a distributed manner and sharing their resources.

  • A Study on Constructing Virtual Overlay Networks Being Aware of Underlying Physical Networks

    Project/Area Number : 19500058  Grant-in-Aid for Scientific Research(C) Representative

    Project Year :


    Partaker : MATSUURA Toshio, ABE Kota, UEDA Tatsuya, OZAKI Hisamichi

     View Summary

    This study proposes a method to construct a hierarchical distributed hash table based on node distance metrics. The hierarchy is determined by a clustering method that classifies nodes on the Internet by some distance metric like RTT (Round Trip Time) or hop counts between nodes. The proposed method reduces communication overhead between nodes on an overlay network making use of communication locality on the Internet.

  • Support Environment for Computer Literacy Education based on Programming Courses

    Project/Area Number : 18500719  Grant-in-Aid for Scientific Research(C) Partaker / Other

    Project Year :


    Partaker : NISHIDA Tomohiro, ISHIBASHI Hayato, ABE Kota, YOSHIODA Tomoko

  • A Distributed Virtual Fileserver System with Redundant File Storing

    Project/Area Number : 16500039  Grant-in-Aid for Scientific Research(C) Representative

    Project Year :


    Partaker : MATSUURA Toshio, ABE Kota

     View Summary

    This project targeted to develop a virtual fileserver system, which consists of many client PCs as its component nodes. Each client PC provides a part of its own storage area to construct a virtual filesystem that supplies a large amount of shared disk space consequently. One of the most important benefits of this approach is as the number of clients increases, the total capacity and total processing power increase as well. All nodes in the system run by a distributed, autonomous manner so that the entire system does not stop working if some portion of nodes got failure. File segments are redundantly stored for robustness.
    To archive this project, we set a design of a distributed file backup system as a first goal. It might be easier to implement than filesystem because backup systems are not so sensitive from the aspect of performance requirements. Then we have designed and implemented a distributed virtual filesystem with the knowledge acquired from the first goal.
    We also studied on distributed hash tables (DHT). Since each node in the system works autonomously and may join/leave at anytime, flexibility of DHTs is favorable to manage nodes and file placement. Our proposed DHT performs with our hierarchical clustering algorithm. It makes the utilization of network resource as effectively as possible by traffic localization.

  • A Method for Sharing Distributed Multimedia Data with High Transparency and Portability

    Project/Area Number : 15500048  Grant-in-Aid for Scientific Research(C) Partaker / Other

    Project Year :


    Partaker : YAMAI Nariyoshi, NAKAYAMA Michiko, ISHIBASHI Hayato, FUJIKAWA Kazutoshi, ABE Kota

     View Summary

    With growth of computing power and proliferation of broadband access to the Internet, demand for streaming applications which can access multimedia data such as video and audio via network has been increasing. Since such applications employ their own data formats and transmission protocols in order to guarantee QoS, there are few applications which are widely available on the Internet. However, to share huge amount of multimedia data on the Internet, it is desirable that a user can use any client applications.
    In this paper, we have proposed a method of sharing multimedia data using file system which provides QoS function. When a quality of multimedia data needs to be deteriorated, the file system of our method supplements data with padding according to the format of multimedia data so that the file size of multimedia data will not be changed. With this feature, a client application can access multimedia data on a server transparently keeping realtimeness. To confirm the effectiveness of our method, we have implemented our method and conduct an experiment on the actual network. The result of the experiment shows that our method is effective even on narrow band network environment.

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Other educational activity and Special note 【 display / non-display

  • Contribution to FD activities