Kota Abe


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Laboratory location

Sugimoto Campus

Mail Address

E-mail address

Degree 【 display / non-display

  • Osaka University -  Doctor of Engineering

Research Areas 【 display / non-display

Information network, Computer system

Research Career 【 display / non-display

  • Technology forWideArea P2P Overlay Networks

    (Collaboration in Japan) Project Year :


    Keyword in research subject:  P2P, Overlay Networks

  • Distributed Systems and System Software

    (Individual) Project Year :


    Keyword in research subject:  Distributed Systems, System Software

Association Memberships 【 display / non-display


  • IEEE

Awards & Honors 【 display / non-display

  • AP2PS 2010 (The 2nd International Conference on Advances in P2P Systems) Best Paper Award


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

  • Osaka City University   Graduate School for Creative Cities   Urban Information Course   Professor  

Career 【 display / non-display

  • 2005.04

    Osaka City University  

  • 2003.04

    Osaka City University  

  • 2000.04

    Osaka City University  

  • 1996.07

    Osaka City University  

  • 1994.04

    Nippon Telegraph and Telephone Corporation  

Graduate School 【 display / non-display

  • 1992.04

    Osaka University  Graduate School, Division of Engineering Science 

Graduating School 【 display / non-display

  • 1988.04

    Osaka University   Faculty of Engineering Science  


Published Papers 【 display / non-display

  • Comparative Evaluation of Dataflow Component Selection Methods in Distributed MQTT Broker Environment

    Shintaro Ishihara, Kazuma Yasuda, Kota Abe, Yuuichi Teranishi, Toyokazu Akiyama

    情報処理学会 Journal of Information Processing  29 ( 0 ) 787 - 800 2021.12  [Refereed]

     View Summary

    <p>Internet of Things applications often require reducing the communication delay and the traffic between sensors and actuators. In addition, research and development of dataflow platforms is ongoing. In these platforms, to meet the aforementioned requirements, geographically distributed dataflow components should be connected appropriately using edge computing environments. Existing approaches provide efficient communication considering the geographical distance using a distributed publish/subscribe broker that uses the peer-to-peer overlay; however, they do not consider resource information. In this paper, we propose two component selection methods - Multicast and Anycast - for inter-component communication considering resource information. Multicast selects a component by collecting resource information before selection, while Anycast selects a component using the aggregated resource information together with the overlay maintenance. We evaluated the hop count and amount of traffic using each method. As a result, we clarified that Anycast provides a smaller number of hops than Multicast when the aggregated values are sufficiently updated or there are sufficient available components. Furthermore, we examined how to use Anycast and Multicast considering the traffic volume against the sending interval of the component reservation request and the interval between sending the update query for maintaining the overlay. The sender node can choose the component selection method based on the number of hops and the traffic volume.</p>

    DOI CiNii

  • Detouring Skip Graph: Efficient Routing via Detour Routes on Skip Graph Topology

    Takeshi Kaneko, Ryohei Banno, Kazuyuki Shudo, Yusuke Aoki, Kota Abe, Yuuichi Teranishi

    IEEE Open Journal of the Communications Society   1   1658 - 1673 2020.10  [Refereed]


  • Improving overlay network management in SDN aware Pub/Sub infrastructure

    Ryosuke Morifusa, Ryohei Banno, Kota Abe, Yuichi Teranishi, Shintaro Ishihara, Toyokazu Akiyama

    61 ( 2 )  2020.02  [Refereed]

  • Detouring Skip Graph: A Structured Overlay Utilizing Detour Routes

    Takeshi Kaneko, Ryohei Banno, Kazuyuki Shudo, Yusuke Aoki, Kota Abe, Yuuichi Teranishi

    Proceedings of IEEE Consumer Communications & Networking Conference  2020.01  [Refereed]

  • Suzaku: a Churn Resilient and Lookup-Efficient Key-Order Preserving Structured Overlay Network

    Kota Abe, Yuuichi Teranishi

    IEICE Transactions on Communications  E102-B ( 9 )  2019.09  [Refereed]

     View Summary

    A key-order preserving structured overlay network is a class of structured overlay network where the order of keys is preserved in its structure to support efficient range queries. This paper presents a novel key-order preserving structured overlay network “Suzaku”. Similar to the conventional Chord#, Suzaku uses a periodically updated finger table as a routing table but extends its uni-directional finger table to bi-directional, which achieves ⌈log2 n⌉ − 1 maximum lookup hops in the converged state. Suzaku introduces active and passive bi-directional finger table update algorithms on node insertion and deletion. This method maintains good lookup performance (nearly O(log n) hops) even in churn situations. As well as its good performance, the algorithms of Suzaku are simple and easy to implement. This paper describes the principles and designs of Suzaku, followed by the simulation evaluations, in which it showed better performance than the conventional networks, Chord# and Skip Graph.


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Conference Activities & Talks 【 display / non-display

  • Ayame: a nonblocking and event-driven framework for simulations and executions of P2P networks

    Kota Abe, Yuuichi Teranishi


  • Suzaku: a churn resilient and lookup-efficient key order preserving structured P2P network

    Kota Abe, Yuuichi Teranishi


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

  • Structured Overlay Network with Self-Verification and Self-Healing Features

    Project/Area Number : 20H04186  Grant-in-Aid for Scientific Research(B) Partaker / Other

    Project Year :



Charge of on-campus class subject 【 display / non-display

  • Network Systems

    (2021) Graduate school, Special course

  • Network Systems

    (2020) Graduate school, Special course

  • Network Systems

    (2019) Graduate school, Special course

  • Network Systems

    (2018) Graduate school, Special course


Foreigner acceptance 【 display / non-display

  • Academic year : 2017

     View Details

    Number of International Students