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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| IN, ICTSSL, IEE-SMF | 2023-10-20 14:40 |
Fukuoka | Fukuoka University | A Study on Applying Digital Twin-Assisted Security Platform for Cyber-Physical Systems to Supply Chain Keizo Sugiyama (KDDI Research)  ICTSSL2023-32 |
The convergence of cyberspace and physical space is becoming more significant towards Beyond 5G. The impact of attacks, ... [more] | ICTSSL2023-32 pp.42-46 |
| ICTSSL, IN, NWS, IEE-SMF | 2022-10-27 14:55 |
Nagano | Shinshu University (Primary: On-site, Secondary: Online) |
Data Security Verification in Supply Chain Keizo Sugiyama, Yuto Nakano, Yasuaki Kobayashi, Toru Nakamura, Haruki Ota, Takao Kojima, Yutaka Miyake, Shinsaku Kiyomoto (KDDI Research) ICTSSL2022-19 |
Highly sensitive data such as inspection data, design data, program module are often handled in a supply chain. As speci... [more] | ICTSSL2022-19 pp.12-17 |
| MoNA | 2018-01-18 13:10 |
Kyoto | Campus Plaza Kyoto | MoNA2017-41 |
5G mobile communication networks (5G) are expected to provide a wide range of new emerging services through flexible com... [more] | MoNA2017-41 pp.1-6 |
| MoNA, IPSJ-DPS, IPSJ-MBL | 2013-05-24 10:10 |
Okinawa | Ishigaki City Hall | re-GPS: Repositioning with Move-out Estimation in Minimization of Drive Tests Haruki Izumikawa, Keizo Sugiyama (KDDI R&D Labs) MoNA2013-8 |
Some studies, including minimization of drive-tests (MDT) in 3GPP, have considered gathering coverage information such a... [more] | MoNA2013-8 pp.113-117 |
| NS, IN (Joint) |
2013-03-08 09:40 |
Okinawa | Okinawa Zanpamisaki Royal Hotel | QoE-based Log Collection in Minimization of Drive Tests Haruki Izumikawa (KDDI Labs.), Ryuichi Yasunaga, Katsuhiro Kujirai, Shigeyuki Terachi, Yoshikazu Shirai (KDDI Engineering), Nao Kobayashi, Keizo Sugiyama (KDDI Labs.) NS2012-227 |
We have been conducting research into the creation of a coverage map or a map of coverage holes for mobile access system... [more] | NS2012-227 pp.361-365 |
| CS, CQ (Joint) |
2010-04-26 15:50 |
Aomori | Oirase Keiryu Hotel | Tribrid electric power control technology for cellular base stations Keizo Sugiyama, Youichi Iriuchijima (KDDI) CS2010-3 CQ2010-10 |
Rapid development of telecommunication services gave rise to increasing power consumption of ICT. Effective countermeasu... [more] | CS2010-3 CQ2010-10 pp.13-16(CS), pp.55-58(CQ) |
| USN, CQ, MoNA (Joint) |
2008-01-25 11:20 |
Shizuoka | Kenshu Kouryu Center, Actcity Hamamatsu (Shizuoka) | [Technology Exhibit]
A Real-World Oriented Presence Sharing System between Smart Spaces and Mobile Phones Noriyuki Senke, Nao Kawanishi (The Univ. of Tokyo), Akihiro Shindo, Keizo Sugiyama, Masayoshi Ohashi (KDDI R&D Labs.), Hiroyuki Morikawa (The Univ. of Tokyo) MoMuC2007-95 USN2007-88 |
Presence sharing should be one of the most popular applications in the ubiquitous computing environment.We can extend th... [more] | MoMuC2007-95 USN2007-88 pp.109-110(MoMuC), pp.125-126(USN) |
| NS, RCS (Joint) |
2007-07-19 15:30 |
Hokkaido | Kitami Institute of Tech. | End-to-end QoS Control Scheme employing IEEE 802.21 in Handover between Direct/Relayed Connections Naoki Fuke (KDDI), Haruki Izumikawa, Keizo Sugiyama, Yoji Kishi (KDDI Labs) NS2007-44 |
Toward the next generation network various communications configurations have been proposed and studied, one of which i... [more] | NS2007-44 pp.25-30 |
| NS, RCS (Joint) |
2007-07-19 15:50 |
Hokkaido | Kitami Institute of Tech. | An Efficient Handover Support using Service Area Maps in Heterogeneous Networks Haruki Izumikawa (KDDI Labs), Naoki Fuke (KDDI), Keizo Sugiyama, Yoji Kishi (KDDI Labs) NS2007-45 |
In the next generation network, where heterogeneous access systems converge, a mobile terminal is required to select an ... [more] | NS2007-45 pp.31-36 |
| NS, IN (Joint) |
2007-03-08 08:00 |
Okinawa | Okinawa Convention Center | Improvement of Handover across Heterogeneous Mobile Networks Implying Less Influence to Existing Nodes Haruki Izumikawa, Takashi Matsunaka, Keizo Sugiyama (KDDI Labs.) IN2006-192 |
In the next generation network where the heterogeneous wireless network systems are converged, the vertical handover neg... [more] | IN2006-192 pp.73-78 |
| RCS, MoNA, WBS, SR, MW (Joint) |
2007-03-08 11:00 |
Kanagawa | YRP | [Invited Talk]
x Kazunori Takeuchi, Keizo Sugiyama, Shoji Kaneko, Yujin Noishiki, Akira Idoue (x) WBS2006-55 SR2006-83 |
A Cognitive Radio has been paid attention from the viewpoint of its high efficiency radio resource management. Although ... [more] | WBS2006-55 SR2006-83 pp.17-24 |
| SIP, CAS, CS | 2007-03-05 09:50 |
Tottori | Blancart Misasa (Tottori) | A study on controlling heterogeneous wireless media in cognitive radio communication systems Keizo Sugiyama, Kazunori Takeuchi (KDDI R&D Labs.) CAS2006-79 SIP2006-180 CS2006-96 |
Cognitive radio communication technology has gotten a lot of attention for improving an efficiency of spectrum usage. Th... [more] | CAS2006-79 SIP2006-180 CS2006-96 pp.13-18 |
| SR | 2006-12-01 09:00 |
Hokkaido | Radio Resource Management for Inter-Base Station Network using Cognitive Radio Tetsuro Ueda, Shoji Kaneko, Shingo Nomura, Keizo Sugiyama, Kazunori Takeuchi (KDDI R&D Labs) SR2006-62 |
CR(Cognitive Radio) is known the technology that can make possible more intensive and efficient spectrum use through spa... [more] | SR2006-62 pp.147-151 |
|
| SR | 2006-12-01 09:25 |
Hokkaido | A Study of Radio Environment Recognition in Cognitive Radio Shoji Kaneko, Tetsuro Ueda, Shingo Nomura, Keizo Sugiyama, Kazunori Takeuchi (KDDI R&D Laboratories Inc.) SR2006-63 |
One of the main problems when a disaster occurs is that communication breaks down within the disaster stricken area. In ... [more] | SR2006-63 pp.153-158 |
|
| NS | 2006-10-26 13:40 |
Gunma | Kiryu City Performing Arts Center | An Effective Authentication Procedure considering Security Risks for Seamless Handover Takashi Matsunaka, Haruki Izumikawa, Keizo Sugiyama (KDDI R&D Labs. Inc.) NS2006-120 |
This paper describes an approach to reduce authentication delay during handover between heterogeneous networks. The au... [more] |
NS2006-120 pp.115-120 |
| RCS | 2006-09-01 08:50 |
Miyagi | Tohoku Univ. | MAP MULTIPLEXING IN IEEE 802.16 MOBILE MULTI-HOP RELAY Haruki Izumikawa, Kenji Saito, Naoki Fuke, Tetsuro Ueda, Keizo Sugiyama (KDDI R&D Labs.) RCS2006-116 |
In this paper, we propose a new scheme called “MAP Multiplexing” for efficient use of the radio resource in IEEE 802.16-... [more] | RCS2006-116 pp.67-72 |
| SR | 2006-07-27 14:00 |
Kanagawa | YRP | [Technology Exhibit]
Research and Development on Cognitive Radio Sysytem
-- Current Research Results -- Kanshiro Kashiki, Mitsuo Nohara, Hiroyuki Nakamura (KDDI), Seishi Hanaoka, Satoshi Yoshizawa (Hitachi), Toshiyuki Kuze, Akira Otsuka (Mitsubishi), Keizo Sugiyama, Akira Idoue (KDDI Labs.), Akira Yamaguchi, Sadao Obana (ATR) SR2006-22 |
At the SR technical meeting held in April 2006, we make a presentation of the outline of the R&D activities concerning t... [more] | SR2006-22 pp.59-65 |
| RCS, NS (Joint) |
2006-07-19 10:50 |
Hokkaido | Hokkaido Univ. | Proposal and evaluations of Local ID method for header size reduction of i3 Takayuki Warabino, Keizo Sugiyama (KDDI Labs.) NS2006-45 |
This paper proposes a new identifier scheme for Internet Indirection Infrastructure (i3). i3 is an overlay network on to... [more] | NS2006-45 pp.5-8 |
| RCS, NS (Joint) |
2006-07-21 10:50 |
Hokkaido | Hokkaido Univ. | A Study on Throughput Enhancement using Asymmetric Paths in Multihop Communication System Naoki Fuke, Takeo Ohseki, Hiroyasu Ishikawa, Keizo Sugiyama (KDDI R&D Labs.) RCS2006-90 |
We propose a connection scheme employing asymmetric paths to enhance the system throughput in the multihop communication... [more] | RCS2006-90 pp.187-192 |
| IN | 2006-06-22 15:50 |
Hokkaido | Seamless Communication for Real-time Applications in Heterogeneous Networks Haruki Izumikawa (KDDI R&D Labs.), Tadayuki Fukuhara (ATR), Shintaro Uno (Motorola Japan Research Lab), Takashi Matsunaka, Takayuki Warabino, Keizo Sugiyama (KDDI R&D Labs.) IN2006-20 |
In the next generation network where the heterogeneous network systems are converged, we bring the new perspective on a ... [more] | IN2006-20 pp.19-24 |
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