Osaka University Graduate School of Information Science and Technology
2016/04 - 2019/03
Osaka University Graduate School of Information Science and Technology
2014/04 - 2016/03
Osaka University
2010/04 - 2014/03
電子情報通信学会 情報指向ネットワーク技術特別研究専門委員会 幹事
2019/04 - Present
IEEE International Conference on Communications (ICC 2025) TPC Member Academic society
2024/10 - 2025/06
International Conference on COMmunication Systems & NETworkS (COMSNET 2025) Publicity Co-chair Academic society
2024/02 - 2025/01
The Twelfth International Symposium on Computing and Networking (CANDAR 2024) Program Committee Academic society
2024/05 - 2024/11
IEEE International Conference on E-health Networking, Application & Services (HealthCom 2024) Publicity Chair Academic society
2023/12 - 2024/11
IEEE/IFIP International Workshop on Analytics for Network and Service Management (AnNet 2024) TPC Member Academic society
2024/02 - 2024/05
IEEE International Conference on Communications (ICC 2024) TPC Member
2023/11 - 2024/05
International Conference on Computing, Networking and Communications (ICNC 2024) Publicity Chair Academic society
2023/01 - 2024/03
The Eleventh International Symposium on Computing and Networking (CANDAR 2023) Program Committee Academic society
2023/05 - 2023/11
The Tenth International Symposium on Computing and Networking (CANDAR 2022) Program Committee
2022/05 - 2022/11
ACM Conference on Information-Centric Networking (ICN 2022) Web Chair
2021/09 - 2022/09
ACM Conference on Information-Centric Networking (ICN 2022) Poster/Demo Program Committee Academic society
2022/07 - 2022/08
IEEE International Symposium on Local and Metropolitan Area Networks (LANMAN 2022) Web Chair Academic society
2021/10 - 2022/07
IEEE/ACM International Symposium on Quality of Service (IWQoS 2022) Technical Program Committee
2022/01 - 2022/06
IEEE
電子情報通信学会
情報処理学会
Informatics / Information networks /
Informatics / Computer systems /
情報ネットワーク研究会研究賞
吉仲佑太郎, 小泉佑揮, 武政淳二, 長谷川亨 電子情報通信学会 IN研究会 2025/03
SCinet Spirit of Innovation Award
Yutaro Yoshinaka, Kanta Tamura, Yuki Koizumi, Junji Takemasa, Toru Hasegawa SC24 Network Research Exhibition 2024/11
Best Paper Award
Yutaro Yoshinaka, Yuki Koizumi, Junji Takemasa, Toru Hasegawa IEEE International Conference on Network Protocols (ICNP) 2024/10
最優秀発表賞
吉仲佑太郎, 小泉佑揮, 武政淳二, 長谷川亨 電子情報通信学会情報ネットワーク研究会 2024/09
IEICE Communications Society Excellent Paper Award (Best Tutorial Paper Award)
Junji Takemasa, Yuki Koizumi, Toru Hasegawa IEICE Communications Society 2024/05
ネットワークシステム研究賞
武政 淳二, 小泉 佑揮, 長谷川 亨 電子情報通信学会 ネットワークシステム研究会 2024/03
若手研究奨励賞
武政淳二 電子情報通信学会 ネットワークシステム研究会 2023/09
ネットワークシステム研究賞
吉仲佑太郎, 武政淳二, 小泉佑揮, 長谷川亨 電子情報通信学会ネットワークシステム研究会 2023/03
嵩賞
大阪大学 大学院情報科学研究科 大学院基礎工学研究科 2022/03
関西支部大会 学生奨励賞
情報処理学会 2015/09
pPHI: Path Validation for a Lightweight Anonymity Protocol
河内山深央, 吉仲佑太郎, 武政淳二, 小泉佑揮, 長谷川亨
IEEE International Conference on Network Protocols (ICNP 2025) p. 1-11 2025/09 Research paper (international conference proceedings)
Payload Queueing for Optimizing Complex Header Processing in Programmable Switches
Yutaro Yoshinaka, Yuki Koizumi, Junji Takemasa, Toru Hasegawa
IEEE Transactions on Networking p. 1-16 2025/06 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Accelerating Data Plane Secure Channels on Programmable Switches
Yutaro Yoshinaka, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
IEEE/IFIP International Workshop on Analytics for Network and Service Management (AnNet 2025) p. 1-6 2025/05/12 Research paper (international conference proceedings)
Publisher: IEEE
Minimal and Fastest Anonymous Communication against Colluding Passive Adversaries
Yutaro Yoshinaka, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
IEEE International Conference on Computer Communications (INFOCOM 2025) p. 1-10 2025/05 Research paper (international conference proceedings)
Leveraging Heterogeneous Programmable Data Planes for Security and Privacy of Cellular Networks, 5G & Beyond
Toru HASEGAWA, Yuki KOIZUMI, Junji TAKEMASA, Jun KURIHARA, Toshiaki TANAKA, Timothy WOOD, K. K. RAMAKRISHNAN
IEICE Transactions on Information and Systems Vol. E108-D No. 6 2024/11 Research paper (scientific journal)
Publisher: Institute of Electronics, Information and Communications Engineers (IEICE)
BalancedSecAgg: Toward Fast Secure Aggregation for Federated Learning
Hiroki Masuda, Kentaro Kita, Yuki Koizumi, Junji Takemasa, Toru Hasegawa
IEEE Access Vol. 12 p. 165265-165279 2024/11 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
High-Throughput Stateless-but-Complex Packet Processing within a Tbps Programmable Switch
Yutaro Yoshinaka, Yuki Koizumi, Junji Takemasa, Toru Hasegawa
Proceedings of IEEE International Conference on Network Protocols (ICNP) p. 1-12 2024/10 Research paper (international conference proceedings)
A Lightweight Anonymity Protocol at Terabit Speeds on Programmable Switches
Yutaro Yoshinaka, Mio Kochiyama, Yuki Koizumi, Junji Takemasa, Toru Hasegawa
Elsevier Computer Networks Vol. 253 2024/08 Research paper (scientific journal)
Publisher: Elsevier BV
Poster: A Fast Monitor for Slow Network Attacks
Cuidi Wei, Shaoyu Tu, Toru Hasegawa, Yuki Koizumi, K. K. Ramakrishnan, Junji Takemasa, Timothy Wood
IEEE Cloud Summit Vol. 1 p. 153-156 2024/06/27 Research paper (international conference proceedings)
Publisher: IEEE
Analysis on a Performance and Fairness Tradeoff in Entanglement Routing for Quantum Networks
Shu Ichinoseki, Yuki Koizumi, Junji Takemasa, Toru Hasegawa
Proceedings of IEEE/IFIP Workshop on Analytics for Network and Service Management 2024/05 Research paper (international conference proceedings)
A Data Reconstruction Attack against Vertical Federated Learning based on Knowledge Transfer
Takumi Suimon, Yuki Koizumi, Junji Takemasa, Toru Hasegawa
Proceedings of IEEE INFOCOM Workshop on Distributed Machine Learning and Fog Networks 2024/05 Research paper (international conference proceedings)
Modeling and Evaluating a Cache System in ICN Routers Using a Programmable Switch and Computers
Junji Takemasa, Yuki Koizumi, Toru Hasegawa
IEEE Access Vol. 12 p. 154426-154442 2024 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
A P4-based NDN Tester for Evaluating Forwarder Performance under Non-Uniform Request Patterns
Junji Takemasa, Yuki Koizumi, Toru Hasegawa
10th ACM Conference on Information-Centric Networking (ICN 2023) p. 19-25 2023/10 Research paper (international conference proceedings)
汎用計算機ベースの高速な情報指向ネットワークルータの実装
武政淳二, 小泉佑揮, 長谷川亨
電子情報通信学会論文誌 B Vol. J106-B No. 5 p. 265-280 2023/05
Secure Middlebox Channel over TLS and its Resiliency against Middlebox Compromise
Kentaro Kita, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
IEEE INFOCOM 2023 p. 1-9 2023/05 Research paper (international conference proceedings)
Programmable Name Obfuscation Framework for Controlling Privacy and Performance on CCN
Yutaro Yoshinaka, Kentaro Kita, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
IEEE Transactions on Network and Service Management p. 1-1 2023 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Byzantine-Resilient Secure Federated Learning on Low-Bandwidth Networks
Hiroki Masuda, Kentaro Kita, Yuki Koizumi, Junji Takemasa, Toru Hasegawa
IEEE Access Vol. 11 p. 51754-51766 2023 Research paper (scientific journal)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Design and analysis of lightweight anonymity protocol for host- and AS-level anonymity
Yutaro Yoshinaka, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
Elsevier Computer Networks p. 109559-109559 2023/01 Research paper (scientific journal)
Publisher: Elsevier BV
On Implementing ChaCha on a Programmable Switch
Yutaro Yoshinaka, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
5th European P4 Workshop (in conjunction with ACM CoNEXT 2022) p. 1-4 2022/12 Research paper (international conference proceedings)
Terabytes and Terabits/s Packet Caching in ICN Routers using Programmable Switches
Junji Takemasa, Yuki Koizumi, Toru Hasegawa
2022 Global Internet (GI) Symposium p. 1-6 2022/11 Research paper (international conference proceedings)
Publisher: IEEE
On cache-aware dynamic adaptive streaming over information-centric networking
Ryo Nakasuji, Yuki Koizumi, Junji Takemasa, Toru Hasegawa
Proceedings of the 9th ACM Conference on Information-Centric Networking 2022/09/06 Research paper (international conference proceedings)
Publisher: ACM
Feasibility of Network-layer Anonymity Protocols at Terabit Speeds using a Programmable Switch
Yutaro Yoshinaka, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
IEEE International Conference on Network Softwarization (NetSoft) p. 1-5 2022/06 Research paper (international conference proceedings)
Publisher: IEEE
gPHI: Lightweight Anonymity Protocol for Anonymity at Host and AS Levels
Yutato Yoshinaka, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
IFIP Networking p. 1-10 2022/06 Research paper (international conference proceedings)
Publisher: IEEE
Learned FIB: Fast IP Forwarding without Longest Prefix Matching
Shunsuke Higuchi, Yuki Koizumi, Junji Takemasa, Atsushi Tagami, Toru Hasegawa
IEEE International Conference on Network Protocol (ICNP) 2021 2021/11 Research paper (international conference proceedings)
ccnGen: A High-speed Generator of Bidirectional CCN Traffic Using A Programmable Switch
Junji Takemasa, Ryoma Yamada, Yuki Koizumi, Toru Hasegawa
ACM Conference on Information Centric Networking (ICN) p. 124-126 2021/09 Research paper (international conference proceedings)
Vision: Toward 10 Tbps NDN Forwarding with Billion Prefixes by Programmable Switches
Junji Takemasa, Yuki Koizumi, Toru Hasegawa
ACM Conference on Information Centric Networking (ICN) p. 13-19 2021/09 Research paper (international conference proceedings)
Model Fragmentation, Shuffle and Aggregation to Mitigate Model Inversion in Federated Learning
Hiroki Masuda, Kentaro Kita, Yuki Koizumi, Junji Takemasa, Toru Hasegawa
IEEE International Symposium on Local and Metropolitan Area Networks (LANMAN) 2021/06 Research paper (international conference proceedings)
Feasibility of Longest Prefix Matching using Learned Index Structures
Shunsuke Higuchi, Junji Takemasa, Yuki Koizumi, Atsushi Tagami, Toru Hasegawa
ACM SIGMETRICS Performance Evaluation Review Vol. 48 No. 4 p. 45-48 2021/03 Research paper (scientific journal)
Publisher: Association for Computing Machinery (ACM)
Data prefetch for fast NDN software routers based on hash table-based forwarding tables.
Junji Takemasa, Yuki Koizumi, Toru Hasegawa
Comput. Networks Vol. 173 p. 107188-107188 2020 Research paper (scientific journal)
Load Balancing for Stateful Forwarding by Mitigating Heavy Hitters: A Case for Multi-Threaded NDN Software Routers.
Junji Takemasa, Atsushi Tagami, Yuki Koizumi, Toru Hasegawa
IEEE Access Vol. 8 p. 155071-155085 2020 Research paper (scientific journal)
A Packet-Level Caching Algorithm for Mitigating Negative Effects Caused by Large Objects in ICN Networks.
Yoji Yamamoto, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
IEEE Access Vol. 8 p. 108247-108259 2020 Research paper (scientific journal)
Lightweight Cache Admission Algorithm for Fast NDN Software Routers.
Junji Takemasa, Yuki Koizumi, Toru Hasegawa
J. Inf. Process. Vol. 27 p. 125-134 2019 Research paper (scientific journal)
A Game-Theoretic Approach to Resolve Conflict Between Traffic Engineering for Energy Efficiency and Load Balancing.
Yuki Koizumi, Junji Takemasa, Toru Hasegawa
2018 IEEE International Symposium on Local and Metropolitan Area Networks(LANMAN) p. 43-48 2018 Research paper (international conference proceedings)
Publisher: IEEE
Analysis of mutual exclusion overhead of NDN packet forwarding on multi-core software router.
Junji Takemasa, Yuki Koizumi, Toru Hasegawa
Proceedings of the 5th ACM Conference on Information-Centric Networking(ICN) p. 198-199 2018 Research paper (international conference proceedings)
Publisher: ACM
Analysis on caching large content for information centric networking.
Yoji Yamamoto, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
Proceedings of the 5th ACM Conference on Information-Centric Networking(ICN) p. 24-30 2018 Research paper (international conference proceedings)
Publisher: ACM
On an impact of large content on packet-level caching of information centric networking.
Yoji Yamamoto, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
25th IEEE International Conference on Network Protocols(ICNP) p. 1-2 2017 Research paper (international conference proceedings)
Publisher: IEEE Computer Society
Toward an ideal NDN router on a commercial off-the-shelf computer.
Junji Takemasa, Yuki Koizumi, Toru Hasegawa
Proceedings of the 4th ACM Conference on Information-Centric Networking(ICN) p. 43-53 2017 Research paper (international conference proceedings)
Publisher: ACM
Identifying Highly Popular Content Improves Forwarding Speed of NDN Software Router.
Junji Takemasa, Kosuke Taniguchi, Yuki Koizumi, Toru Hasegawa
2016 IEEE Globecom Workshops p. 1-6 2016 Research paper (international conference proceedings)
Publisher: IEEE
A Method for Designing High-speed Software NDN Routers.
Kosuke Taniguchi, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
Proceedings of the 3rd ACM Conference on Information-Centric Networking(ICN) p. 203-204 2016 Research paper (international conference proceedings)
Publisher: ACM
Power Consumption Model of NDN-Based Multicore Software Router Based on Detailed Protocol Analysis.
Kaito Ohsugi, Junji Takemasa, Yuki Koizumi, Toru Hasegawa, Ioannis Psaras
IEEE J. Sel. Areas Commun. Vol. 34 No. 5 p. 1631-1644 2016 Research paper (scientific journal)
Is Caching a Key to Energy Reduction of NDN Networks?
Junji Takemasa, Yuki Koizumi, Toru Hasegawa
IEICE Trans. Commun. Vol. 99-B No. 12 p. 2489-2497 2016 Research paper (scientific journal)
On Energy Reduction and Green Networking Enhancement Due to In-Network Caching.
Junji Takemasa, Yuki Koizumi, Toru Hasegawa, Ioannis Psaras
12th IEEE International Conference on Mobile Ad Hoc and Sensor Systems(MASS) p. 513-518 2015 Research paper (international conference proceedings)
Publisher: IEEE Computer Society
Empirically modeling how a multicore software ICN router and an ICN network consume power.
Toru Hasegawa, Yuto Nakai, Kaito Ohsugi, Junji Takemasa, Yuki Koizumi, Ioannis Psaras
1st International Conference on Information-Centric Networking(ICN) p. 157-166 2014 Research paper (international conference proceedings)
Publisher: ACM
An Analysis on Data Structures and Algorithms for FIB of a Fast PC-based NDN Router
Vol. 117 No. 205 p. 13-18 2017/09/07
Publisher: 電子情報通信学会
Bottleneck Analysis on Packet Forwarding of an NDN Software Router
Vol. 116 No. 485 p. 97-102 2017/03/02
Publisher: 電子情報通信学会
Cache Admission for Improving Forwarding Speed of NDN Software Router
Vol. 116 No. 361 p. 97-102 2016/12/15
Publisher: 電子情報通信学会
B-7-5 A Study on Power Consumption Trade-off due to Caching in an NDN Network
Takemasa Junji, Koizumi Yuki, Hasegawa Toru
Proceedings of the IEICE General Conference Vol. 2016 No. 2 p. 138-138 2016/03/01
Publisher: The Institute of Electronics, Information and Communication Engineers
B-7-9 A Study on the Power Consumed by a CPU Device with Power Management States of a Multicore Software ICN Router
Taniguchi Kosuke, Takemasa Junji, Koizumi Yuki, Hasegawa Toru
Proceedings of the IEICE General Conference Vol. 2016 No. 2 p. 142-142 2016/03/01
Publisher: The Institute of Electronics, Information and Communication Engineers
A Proposal of a Power Consumption Model of a Multicore Software ICN Router Incorporating CPU Power Saving Mechanisms
Vol. 115 No. 370 p. 125-130 2015/12/17
Publisher: 電子情報通信学会
A Study on Energy Reduction Effects due to In-Network Caching in ICN Networks
p. 1-8 2015
Publisher: [情報処理学会関西支部]
B-7-45 A Study on a Power Trade-off between Cache Processing Overheads and Traffic Reduction in CCN Networks
Takemasa Junji, Koizumi Yuki, Hasegawa Toru
Proceedings of the Society Conference of IEICE Vol. 2014 No. 2 p. 102-102 2014/09/09
Publisher: The Institute of Electronics, Information and Communication Engineers
ChaCha implementation on Tofino switches
Yutaro Yoshinaka, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
2022/10 - Present
PHI anonymity protocol on Tofino switch
Yutaro Yoshinaka, Junji Takemasa, Yuki Koizumi, Toru Hasegawa
2022/06 - Present
Cefore Cache Plugin
Junji Takemasa, Yuki Koizumi, Toru Hasegawa
2019/09/18 - Present
IEEE Transactions on Computers
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
IEEE Transactions on Network and Service Management
IEICE Transactions on Communications
Transactions on Emerging Telecommunications Technologies
IEICE Transactions on Information and Systems
IEEE Transactions on Parallel and Distributed Systems
A High-speed NDN Forwarding Engine on a Commercial Off-the-shelf Computer
武政 淳二
