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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| RCS | 2015-04-17 12:10 |
Oita | Yufuin, Yufugoukan | A Study on Small Cell Selection Method Considering the Traffic Load in Heterogeneous Networks Kazuya Moriwaki, Toshiaki Yamamoto, Hailan Peng, Yasuhiro Suegara (KDDI R&D Labs.)  RCS2015-15 |
The use of small cell deployments in the heterogeneous networks (HetNet) environment is considered a promising approach ... [more] | RCS2015-15 pp.77-82 |
| SR | 2014-10-30 15:50 |
Overseas | I2R, Singapore | [Requested Talk] Millimeter-wave based LTE/WiGig Heterogeneous Networks: Small Cell Search Technique and Tightly Coupled Interworking Architecture Hailan Peng, Toshiaki Yamamoto, Yasuhiro Suegara (KDDI R&D Labs.) SR2014-76 |
Heterogeneous networks (HetNet) with different radio access technologies have been deployed to support a wide range of c... [more] | SR2014-76 pp.95-102 |
| RCS | 2014-06-18 15:30 |
Okinawa | Okinawa-ken Seinenkaikan (Naha) | Evaluation of Energy Efficient Inter-frequency Small Cell Search Scheme using Radio Frequency Fingerprint in Millimeter-wave Heterogeneous Networks Hailan Peng, Toshiaki Yamamoto, Yasuhiro Suegara (KDDI R&D Labs.) RCS2014-76 |
Deployment of small cells with ultra wideband using a higher carrier frequency over the traditional macro cells operated... [more] | RCS2014-76 pp.257-262 |
| RCS, NS (Joint) |
2013-12-19 14:30 |
Kagawa | Sunport Hall Takamatsu | [Invited Lecture]
Self Optimization Technologies in SON for LTE/LTE-Advanced Satoshi Konishi, Toshiaki Yamamoto (KDDI Labs.) NS2013-145 RCS2013-233 |
It is observed that mobile traffic exponentially increases in recent years. In cellular systems such as Long Term Evolut... [more] | NS2013-145 RCS2013-233 pp.67-72(NS), pp.161-166(RCS) |
| RCS, SAT (Joint) |
2013-08-30 15:15 |
Nagano | Shinshu Univ. | Evaluation of Mobility Performance on Small Cell Deployments in LTE/LTE-Advanced Heterogeneous Networks Toshiaki Yamamoto, Satoshi Konishi (KDDI Labs.) RCS2013-139 |
[more] | RCS2013-139 pp.93-97 |
| NS, RCS (Joint) |
2012-12-13 11:10 |
Ehime | Ehime Univ. | A Study of LTE Mobility Load Balancing Scheme in Various Traffic Environments Toshiaki Yamamoto, Satoshi Konishi (KDDI Labs.) RCS2012-190 |
[more] | RCS2012-190 pp.41-46 |
| RCS, NS, USN (Joint) |
2012-07-19 14:10 |
Iwate | Iwate Univ. | Mobility Load Balancing Scheme based on Cell Reselection in LTE Systems Toshiaki Yamamoto, Satoshi Konishi (KDDI Labs.) RCS2012-81 |
[more] | RCS2012-81 pp.37-42 |
| USN, AN, MoNA (Joint) |
2010-01-22 09:20 |
Shizuoka | Actcity Hamamatsu | A Proposal of Adaptive Traffic Route Control in QoS Provisioning for Cognitive Radio Technology with Heterogeneous Wireless Systems Toshiaki Yamamoto, Tetsuro Ueda, Sadao Obana (ATR) MoMuC2009-65 |
[more] | MoMuC2009-65 pp.63-68 |
| RCS, AN, MoNA, SR (Joint) |
2009-03-04 14:55 |
Kanagawa | YRP | A Study of the Effect of Power, Timing, and Frequency Offset Difference on Multi-Site Cooperative MIMO Systems Toshiaki Yamamoto, Hisato Iwai, Tetsuro Ueda, Sadao Obana (ATR) RCS2008-225 |
[more] | RCS2008-225 pp.77-82 |
| SR | 2009-01-23 10:55 |
Kyoto | Kyoto University | Supporting Multihomed Mobile Nodes Connecting to Heterogeneous Wireless Systems in Hierarchical Mobile IPv6 Networks Morihiko Tamai, Kengo Sakai, Toshiaki Yamamoto, Akio Hasegawa, Tetsuro Ueda, Sadao Obana (ATR) SR2008-80 |
Due to widespread deployment of wireless communication infrastructures, mobile terminals which have multiple wireless in... [more] | SR2008-80 pp.75-82 |
| SR | 2007-11-27 15:40 |
Hiroshima | Hirishima international univ. | A Reduction Method of Information Overhead for QoS Route Control and Throughput Evaluation in Cognitive Wireless Access Networks Toshiaki Yamamoto, Jong-Ok Kim, Akira Yamaguchi, Sadao Obana (ATR) SR2007-63 |
[more] | SR2007-63 pp.113-118 |
| NS, CS, IN (Joint) |
2007-09-21 15:30 |
Miyagi | Tohoku University | Network Load Balancing Technique for QoS route control in Cognitive Wireless Access Networks Toshiaki Yamamoto, Jong-Ok Kim, Akira Yamaguchi, Sadao Obana (ATR) NS2007-74 |
[more] | NS2007-74 pp.107-112 |
| NS, CS, IN (Joint) |
2007-09-21 15:50 |
Miyagi | Tohoku University | Application-Aware Traffic Splitting over Cognitive Multi-Access Networks Jong-Ok Kim, Toshiaki Yamamoto, Akira Yamaguchi, Sadao Obana (ATR) NS2007-75 |
We consider next generation multi-access cognitive networks, where WiMAX and WiFi links are set up at the same time. In ... [more] | NS2007-75 pp.113-118 |
| SR | 2007-07-26 14:00 |
Kanagawa | [Technology Exhibit]
Research and Development Activities on Cognitive Radio Technology
-- Routing Technology for Cognitive Radio Access Network -- Akira Yamaguchi, Toshiaki Yamamoto, Jong-Ok Kim, Yasuhisa Takizawa, Sadao Obana (ATR) SR2007-22 |
Various wireless systems will co-exist in the future mobile access network. So, a terminal with various wireless interfa... [more] | SR2007-22 pp.13-16 |
|
| MoNA, IPSJ-MBL | 2007-05-17 10:55 |
Okinawa | Okinawa-seinen-kaikan | An Experimental Study on Channel Quality for QoS Route Control in Cognitive Wireless Access Networks Toshiaki Yamamoto, Jong-Ok Kim, Akira Yamaguchi, Sadao Obana (ATR) MoMuC2007-6 |
Various wireless communication systems are now being developed according to various users’ needs. For example, the 3rd g... [more] | MoMuC2007-6 pp.27-32 |
| RCS, AP, WBS, SR, MW, MoNA (Joint) |
2006-03-02 11:20 |
Kanagawa | YRP | A Receiving Method for an OFDM signal with Rotational Symbol Mapping Toshiaki Yamamoto, Noriaki Miyazaki, Hiroyasu Ishikawa, Toshinori Suzuki (KDDI Labs.) |
We propose the rotational code-multiplexed OFDM (R-OFDM) scheme. In the scheme, modulation symbols are mapped onto the s... [more] | RCS2005-205 pp.163-168 |
| RCS, AP, WBS, MW, MoNA | 2005-03-04 14:50 |
Kanagawa | Yokosuka Research Park | A study on optimal transmit power control algorithm for subcarrier adaptive modulation Toshiaki Yamamoto, Hiroyasu Ishikawa, Toshinori Suzuki (KDDI R&D Labs.) |
In the multicarrier transmission systems, the subcarrier adaptive modulation is widely studied where the modulation sche... [more] | WBS2004-136 AP2004-317 RCS2004-404 MoMuC2004-187 MW2004-314 pp.85-90 |
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