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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| NS, IN (Joint) |
2024-03-01 14:15 |
Okinawa | Okinawa Convention Center | A Study of Power Consumption Reduction by Dynamic Hardware Offload in Virtualized Base Stations Riichiro Nagareda, Chikara Sasaki, Atsushi Tagami (KDDI Research), Tomohiro Otani (KDDI)  IN2023-103 |
Sixth-generation (6G) mobile communication systems have been studied to deal with the exponential increase in mobile tr... [more] |
IN2023-103 pp.225-230 |
| NS, IN, CS, NV (Joint) |
2022-09-01 11:15 |
Iwate | MALIOS (Iwate Prefecture) + Online Meeting (Primary: On-site, Secondary: Online) |
Deployment of Circular Evolutionary Testbed toward Beyond 5G Mobile Network Hiroaki Harai, Kazuhiko Nakamura, Kenjiro Terada (NICT), Riichiro Nagareda, Takuya Kato (KDDI Research, Inc./NICT), Hidehisa Nagano, Fumihide Kojima (NICT) NS2022-63 |
We installed Beyond 5G Mobile Testbed where advanced applications and networks for beyond 5G can be developed, verified ... [more] | NS2022-63 pp.17-22 |
| CQ | 2022-07-21 14:55 |
Osaka | Ritsumeikan Ibaraki Future Plaza Conference Hall (Primary: On-site, Secondary: Online) |
A Quantitative Evaluation of Power Consumption Reduction by Hardware Offload for Virtualized Base Stations Riichiro Nagareda, Genichi Mouri, Chikara Sasaki, Atsushi Tagami (KDDI/KDDI Research) CQ2022-19 |
B5G (Beyond Fifth Generation) and 6G (Sixth Generation) mobile communication systems have been developed for Society 5.0... [more] | CQ2022-19 pp.13-18 |
| AP | 2016-03-11 10:25 |
Yamanashi | Isawa Onsen (Kanpo no Yado) | A consideration on a 15 GHz beam adjustable microstrip antenna array Shunsuke Kamimura, Sakuyoshi Saito, Yuichi Kimura (Saitama Univ.), Riichiro Nagareda, Masayuki Nakano (KDDI Labs.) AP2015-218 |
This paper presents beam adjustable microstrip antenna arrays (BA-MSAAs). The BA-MSAA consists of a microstrip antenna (... [more] | AP2015-218 pp.81-84 |
| EST | 2015-09-03 10:30 |
Okinawa | Oohama-Nobumoto-Kinenkan, Ishigaki Island, Okinawa, Japan | Statistical Analysis of Rain Toward Route Switching of Millimeter-Wave Wireless Network Takuichi Hirano, Jiro Hirokawa, Makoto Ando (Tokyo Tech.), Riichiro Nagareda, Akira Yamaguchi (KDDI Labs.), Hitoshi Nagahori, Toru Taniguchi (JRC) EST2015-54 |
Statistic properties of rainfall in Tokyo are presented in this report. Average rain duration as a function of rain rate... [more] | EST2015-54 pp.7-11 |
| NS, IN (Joint) |
2015-03-03 10:50 |
Okinawa | Okinawa Convention Center | A Study of Routing Algorithm Based on Quality Prediction for Millimeter-Wave Wireless Links Riichiro Nagareda, Hiroshi Hanano, Akira Yamaguchi (KDDI Labs.) NS2014-233 |
Mobile operators usually use wired links as backhauls which connect base stations (BSs) and core networks (CNs). However... [more] | NS2014-233 pp.325-330 |
| AP (2nd) |
2014-05-15 - 2014-05-16 |
Ishikawa | The Kanazawa Theatre | A method for predicting rain attenuation in millimeter-wave wireless mesh networks Riichiro Nagareda, Hiroshi Hanano, Akira Yamaguchi (KDDI R&D Labs.), Hung Vu Le, Takuichi Hirano, Makoto Ando (Tokyo Tech.) |
MilliMeter-Wave (mmW) backhaul networks flexibly expand the service area of cellular system where dense small cells are ... [more] | |
| RCS, SR, SRW (Joint) |
2013-02-28 10:50 |
Tokyo | Waseda Univ. | A Study of Efficient Spectrum Utilization Using Wideband Non-contiguous OFDM Riichiro Nagareda, Akio Hasegawa, Tatsuo Shibata, Masayoshi Ohashi (ATR) SR2012-100 |
Recently the demand of the mobile communication traffic increases rapidly. In order to deal with this demand, it is thou... [more] | SR2012-100 pp.103-108 |
| SR, RCS, SRW (Joint) |
2012-03-09 14:50 |
Kanagawa | YRP | Performance Evaluation of Power Saving Scheme for Wireless Access Networks with Access Point Sharing Riichiro Nagareda, Akio Hasegawa, Tatsuo Shibata, Masayoshi Ohashi (ATR) RCS2011-350 |
For wireless access network where many user terminals (UTs) share many access points (APs), power consumption of the net... [more] | RCS2011-350 pp.205-210 |
| RCS | 2011-06-23 09:40 |
Okinawa | Ryukyu Univ. | A Proposal of Power-Saving Scheme for Wireless Access Networks with Access-Point Sharing Riichiro Nagareda, Akio Hasegawa, Tatsuo Shibata, Sadao Obana (ATR) RCS2011-37 |
In wireless access network, where many stations shere access points (APs) which are disposed widely, power consumption o... [more] | RCS2011-37 pp.13-18 |
| RCS, AN, MoNA, SR (Joint) |
2010-03-05 10:20 |
Kanagawa | YRP | Throughput Estimation Method Based on Average and Standard Deviation of Received SINR for Cellular System with Adaptive-Modulation-and-Coding and Hybrid ARQ
-- Throughput Estimation taking into account Incremental Redundancy (IR) Combining -- Riichiro Nagareda, Yoji Kishi (KDDI Labs.) RCS2009-310 |
[more] | RCS2009-310 pp.303-308 |
| RCS | 2009-08-03 14:40 |
Miyagi | Tohoku Univ. | Throughput Estimation Using Average and Standard Deviation of Received SINR for Cellular System with Adaptive-Modulation-and-Coding and Hybrid ARQ Riichiro Nagareda, Yoji Kishi (KDDI R&D Labs Inc.,) RCS2009-88 |
In cellular systems, it is important to design service areas appropriately for providing various services such as web br... [more] | RCS2009-88 pp.61-66 |
| RCS, AN, MoNA, SR (Joint) |
2009-03-05 15:15 |
Kanagawa | YRP | Throughput Estimation Using Average and Standard Deviation of Received SINR for Cellular System with Adaptive-Modulation-and-Coding and ARQ Riichiro Nagareda, Yoji Kishi, Haruki Izumikawa (KDDI R&D Lab. Inc.,) RCS2008-246 |
In cellular systems, it is important to design service areas appropriately for providing various services such as voice ... [more] | RCS2008-246 pp.203-206 |
| IN | 2008-06-20 13:50 |
Hokkaido | Hokkaido Univ. | Study of New Mobile Converged Architecture:SIP-based Cellular Network Extension Haruki Izumikawa (KDDI R&D Labs.), Shigeru Iwasaki, Junichi Kashima (KDDI), Yoji Kishi (KDDI R&D Labs.), Yuji Sako (KDDI), Riichiro Nagareda (KDDI R&D Labs.) IN2008-22 |
Recently, with the emergence of a wide variety of access technologies, dual/multi-mode terminals, which have several net... [more] | IN2008-22 pp.73-78 |
| NS, IN (Joint) |
2008-03-06 08:20 |
Okinawa | Bankoku Shinryokan | Terminal-driven Coverage Area Detection with Low Power Consumption Haruki Izumikawa, Yoji Kishi, Riichiro Nagareda (KDDI Labs.) NS2007-130 |
It is necessary to select an appropriate access network out of the several available when a multi-mode terminal is used.... [more] | NS2007-130 pp.1-6 |
| RCS, SIP | 2007-01-25 11:20 |
Okinawa | NICT Okinawa | Adaptive-Modulation-and-Coding OFDM Radio Packet Systems Employing Bit LLR Combining ARQ with Multiuser Detection Riichiro Nagareda, Kazuhiko Fukawa, Hiroshi Suzuki (Tokyo Tech) SIP2006-145 RCS2006-203 |
This report proposes an OFDM mobile radio packet system that employs a new protocol of automatic repeat request (ARQ) fo... [more] | SIP2006-145 RCS2006-203 pp.49-54 |
| SR | 2006-07-27 14:00 |
Kanagawa | YRP | [Technology Exhibit]
Implementation and evaluation of 4×4MIMO fading simulator considering antenna characteristics. Dao Nguyen Dung, Kei Sakaguchi, Satoshi Suyama, Riichiro Nagareda, Jun-ichi Takada, Hiroshi Suzuki, Kiyomichi Araki (TiTech), Shintaro Arata, Kazuhiko Kaiga, Sakae Manabe, Toshihiro Yamaguchi, Katsuji Miwa (Koden) SR2006-19 |
Wireless systems employing MIMO technologies such as IEEE802.11n wireless LAN and IEEE802.16e wireless access are on the... [more] | SR2006-19 pp.35-42 |
| RCS, AP, WBS, SR, MW, MoNA (Joint) |
2006-03-01 13:40 |
Kanagawa | YRP | Implementation of 4 x 4 MIMO Fading Simulator Kei Sakaguchi, Satoshi Suyama, Riichiro Nagareda, Liean Zheng, Chulgyun Park, Jun-ichi Takada, Hiroshi Suzuki, Kiyomichi Araki (Tokyo Inst. of Tech.), Shintaro Arata, Kazuhiko Kaiga, Sakae Manabe, Toshihiro Yamaguchi, Katsuji Miwa (Koden Electronics) |
Wireless systems employing MIMO technologies such as IEEE802.11n wireless LAN and IEEE802.16e wireless access are on the... [more] | RCS2005-188 pp.61-66 |
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