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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| NS, NWS (Joint) |
2023-01-27 11:20 |
Yamaguchi | Hybrid Meeting (Yamaguchi Prefecture) (Primary: On-site, Secondary: Online) |
SRLG-Disjoint Optical Redundant Route Selection with k-SPF Algorithm Hiroshi Matsuura, Koujun Koshiji, Yasuhasu Kaneko, Hanami Yokoi, Tatsuya Matsukawa, Takayuki Fujii, Takashi Miyamura (NTT)  NS2022-164 |
When an end-to-end wavelength path is established, a primary/backup redundant route pair for the path should be prepared... [more] | NS2022-164 pp.84-89 |
| CQ, ICM, NS, NV (Joint) |
2021-11-25 11:55 |
Fukuoka | JR Hakata Stn. Hakata EkiHigashi Rental Room (Primary: On-site, Secondary: Online) |
Routing and Wavelength Assignment based on Quality of Transmission and Modulation Hanami Yokoi, Kohjun Koshiji, Yasuharu Kaneko, Tatsuya Matsukawa, Takashi Miyamura (NTT) NS2021-87 |
In recent years, with the increase in the speed and capacity of optical transmission networks, it is necessary to operat... [more] | NS2021-87 pp.18-23 |
| NS | 2021-05-14 10:55 |
Online | Online | Spectrum Defragmentation based on Path Classification in Optical Network Hanami Yokoi, Kohjun Koshiji, Yasuharu Kaneko, Tatsuya Matsukawa, Mika Ishizuka, Takafumi Hamano (NTT) NS2021-23 |
In recent years, with the increase in the speed and capacity of optical transmission networks, it is necessary to operat... [more] | NS2021-23 pp.50-55 |
| CQ | 2017-07-27 11:15 |
Hyogo | Kobe University | An algorithm for route design in communication network Takuma Tsubaki, Mika Ishizuka, Tatsuya Matsukawa, Seisho Yasukawa (NTT) CQ2017-33 |
Due to the Great East Japan Great Earthquake that occurred in 2011, the relay cable (route) connecting the telephone exc... [more] | CQ2017-33 pp.25-30 |
| CQ | 2016-07-27 14:00 |
Osaka | The Osaka Umeda Campus, Kwansei Gakuin Univesity | A study on estimation of number of spare equipments for telecommunication networks.
-- Alternative solution using the binomial distribution -- Hiroyuki Funakoshi, Tatsuya Matsukawa, Takuma Tsubaki (NTT) CQ2016-41 |
The authors have been proposed a method to estimate the number of spare equipments necessary for the next month from th... [more] | CQ2016-41 pp.49-54 |
| IN | 2015-10-15 14:30 |
Osaka | Osaka University | Time series analysis of failure rates of equipments for telecommunication networks. Hiroyuki Funakoshi, Tatsuya Matsukawa, Takuma Tsubaki (NTT) IN2015-53 |
The failure rates of equipments for telecommunication networks are time series. Therefore, time series analysis is requi... [more] | IN2015-53 pp.1-6 |
| CQ, IMQ, MVE, IE (Joint) [detail] |
2015-03-03 09:45 |
Tokyo | Seikei Univ. | A study on estimation of number of spare equipments for telecommunication networks Hiroyuki Funakoshi, Tatsuya Matsukawa, Takuma Tsubaki (NTT) CQ2014-113 |
The authors have been proposed the failure rate estimation method considering the change in number of equipments for tel... [more] | CQ2014-113 pp.7-12 |
| IN | 2014-10-16 14:55 |
Osaka | Osaka Univ. | A study on the quantification of impact of outage for telecommunication networks Hiroyuki Funakoshi, Tatsuya Matsukawa (NTT) IN2014-75 |
In order to quantify the impact of outage for telecommunication networks, the product of number of users and service dow... [more] | IN2014-75 pp.7-12 |
| IN, NWS (Joint) |
2014-01-23 11:10 |
Aichi | Nagoya International Center | A study on the permeation of reliability evaluation for telecommunication networks Hiroyuki Funakoshi, Tatsuya Matsukawa (NTT) IN2013-119 |
The authors studied reliability evaluation techniques specialized in telecommunication networks. The basic examinations ... [more] | IN2013-119 pp.9-14 |
| RCS, NS (Joint) |
2013-12-19 09:25 |
Kagawa | Sunport Hall Takamatsu | Extreme value analysis for large scale outages of telecommunication networks Hiroyuki Funakoshi, Tatsuya Matsukawa (NTT) NS2013-136 |
In telecommunication networks, it is difficult to predict the probability of occurrence of large-scale outages because t... [more] | NS2013-136 pp.13-18 |
| RCS, IN (Joint) |
2011-05-26 10:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | A study on the maintainability for telecommunication networks
-- Reduction of processing time for non-parametric estimation -- Hiroyuki Funakoshi, Tatsuya Matsukawa, Yasuto Nakanishi (NTT) IN2011-19 |
The authors have been established the reliability evaluation methods using actual outage data of telecommunication netwo... [more] | IN2011-19 pp.7-12 |
| IN | 2011-04-21 14:25 |
Kagawa | Kagawa University | A study on the maintainability for telecommunication networks
-- Non-parametric method and improvement the precision of the analysis -- Hiroyuki Funakoshi, Tatsuya Matsukawa, Yasuto Nakanishi (NTT) IN2011-5 |
The authors have been established the reliability evaluation methods using actual outage data of telecommunication netwo... [more] | IN2011-5 pp.23-28 |
| NS | 2010-01-28 12:05 |
Fukuoka | Fukuoka Institute of System LSI Design Industry (Fukuoka) | An unavailability simulation of telecommunication networks based on the actual outage data
-- Reproduction of the correlation between outage scale and maintenance time -- Hiroyuki Funakoshi, Tatsuya Matsukawa (NTT) NS2009-147 |
The authors have been insisted on the importance of reliability management for IP networks constructed of commercial equ... [more] | NS2009-147 pp.29-34 |
| IN | 2010-01-14 15:45 |
Hiroshima | Hiroshima City University | Reliability management of telecommunication networks Hiroyuki Funakoshi, Tatsuya Matsukawa (NTT) IN2009-115 |
The authors have been insisted on the importance of reliability management for IP networks, and established the manageme... [more] | IN2009-115 pp.29-34 |
| NS | 2009-12-11 09:30 |
Ehime | Ehime University (Ehime) | An unavailability simulation of telecommunication networks based on the actual outage data
-- Derivation a reliability management object from simulation and evolution into the design of telecommunication networks -- Hiroyuki Funakoshi, Tatsuya Matsukawa (NTT) NS2009-130 |
The authors have been insisted on the importance of reliability management for IP networks constructed of commercial equ... [more] | NS2009-130 pp.57-62 |
| CQ, NS, ICM (Joint) |
2009-11-12 13:40 |
Ishikawa | Kanazawa Institute of Technology (Ishikawa) | Network reliability evaluation for managing maintenance time Tatsuya Matsukawa, Hiroyuki Funakoshi (NTT) CQ2009-44 |
The level of network reliability has to be achieved not only in the network-design phase but also in the network-operati... [more] | CQ2009-44 pp.33-38 |
| NS | 2009-10-15 14:20 |
Kumamoto | Prefectural University of Kumamoto (Kumamoto) | An unavailability simulation of telecommunication networks based on the actual outage data Hiroyuki Funakoshi, Tatsuya Matsukawa (NTT) NS2009-83 |
The authors have been insisted on the importance of reliability management for IP networks constructed of commercial equ... [more] | NS2009-83 pp.37-42 |
| CQ | 2009-09-10 15:40 |
Gifu | Takayama Culture Center | A study on the computation of maintainability for telecommunication networks Hiroyuki Funakoshi, Tatsuya Matsukawa (NTT) CQ2009-30 |
The authors have been insisted on the importance of reliability management for IP networks constructed of commercial equ... [more] | CQ2009-30 pp.27-32 |
| NS, OCS, PN (Joint) |
2009-06-25 13:35 |
Nagasaki | Nagasaki Museum of History and Culture (Nagasaki) | A failure rate estimation considering the change in the number of equipments
-- Applicable condition of mathematical model for proposed method -- Hiroyuki Funakoshi, Tatsuya Matsukawa (NTT) NS2009-33 |
The authors have been insisted on the importance of reliability management for IP networks constructed of commercial equ... [more] | NS2009-33 pp.13-18 |
| NS | 2009-05-21 16:00 |
Hiroshima | Hiroshima City University (Hiroshima) | A failure rate estimation considering the change in the number of equipment Hiroyuki Funakoshi, Tatsuya Matsukawa (NTT) NS2009-17 |
The authors have been insisted on the importance of reliability management for IP networks constructed of commercial equ... [more] | NS2009-17 pp.1-6 |
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