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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| NS | 2023-10-06 16:25 |
Hokkaido | Hokkaidou University + Online (Primary: On-site, Secondary: Online) |
Implementation and evaluation of delay adjuster for in-network video processing Hiroyuki Kitada (NTT), Daiki Fukudome (NHK), Kento Noguchi, Takafumi Okuyama (NTT), Satoshi Nishimura, Hisayuki Ohmata (NHK)  NS2023-106 |
With the shift to IP video transmission, video data transmission between devices in video production has been progressiv... [more] | NS2023-106 pp.172-176 |
| IN, NS (Joint) |
2023-03-03 14:10 |
Okinawa | Okinawa Convention Centre + Online (Primary: On-site, Secondary: Online) |
Implementation of in-network video processing method using a programmable switch Hiroyuki Kitada (NTT), Daiki Fukudome (NHK), Takafumi Okuyama (NTT), Satoshi Nishimura, Hisayuki Ohmata (NHK) IN2022-120 |
With the shift to IP video transmission, video data transmission between devices in video production has been progressiv... [more] | IN2022-120 pp.323-328 |
| IN, CCS (Joint) |
2022-08-05 16:30 |
Hokkaido | Hokkaido University(Centennial Hall) (Primary: On-site, Secondary: Online) |
A study on delivery method for in-network video processing Hiroyuki Kitada (NTT), Daiki Fukudome (NHK), Takafumi Okuyama, Xiaotian Zhao (NTT), Masaaki Kurozumi, Sayaka Nishide, Satoshi Nishimura, Yusei Nishimoto (NHK) IN2022-26 |
With the progress of IP transmission of video transmission, various standards have been put into practical use, and they... [more] | IN2022-26 pp.63-67 |
| CQ, MIKA (Joint) |
2021-09-10 15:50 |
Online | Online | Study of Quality Managed ABR Control Method by Delivery Resource Allocation Based on Video Quality Assessment Model Daiki Fukudome (NHKSTRL), Hiroyuki Kitada (NTT), Masaaki Kurozumi, Sayaka Nishide, Satoshi Nishimura (NHKSTRL), Takafumi Okuyama, Xiaotian Zhao (NTT), Masao Yamamoto (NHKSTRL) CQ2021-61 |
In recent years, the Byond5G promotion strategy has begun to consider opening up network control APIs to the outside. Dy... [more] | CQ2021-61 pp.115-120 |
| IN, CCS (Joint) |
2021-08-05 13:25 |
Online | Online | A study on network control method for video streaming based on content streaming requirements Hiroyuki Kitada (NTT), Daiki Fukudome (NHK), Takafumi Okuyama, Zhao Xiaotian (NTT), Masaaki Kurozumi, Sayaka Nishide, Satoshi Nishimura, Masao Yamamoto (NHK) IN2021-11 |
In the video streaming service, streaming control is generally performed uniformly without considering the type of conte... [more] | IN2021-11 pp.7-11 |
| IE, SIP, BioX, ITE-IST, ITE-ME [detail] | 2021-06-04 16:00 |
Online | Online | Volumetric video streaming data reduction using fixed one side 3D data Xiaotian Zhao, Takafumi Okuyama (NTT) |
[more] | |
| IE, CS, IPSJ-AVM, ITE-BCT [detail] | 2019-12-05 09:50 |
Iwate | Aiina Center | A Study on the Manifest Control Method Used for Live/Linear Streaming in HTTP Streaming Takafumi Okuyama, Xiaotian Zhao, Hiroyuki Kitada, Saburo Seto (NTT) CS2019-71 IE2019-51 |
The authors have studied a manifest control method that dynamically generates a manifest file based on the control polic... [more] | CS2019-71 IE2019-51 pp.7-10 |
| CQ | 2019-08-27 11:35 |
Hokkaido | Hakodate arena | Video Bitrate Stabilization Method for Viewing Quality Improvement in ABR Streaming Hiroyuki Kitada, Takafumi Okuyama, Seisho Yasukawa, Yoshikatsu Okazaki (NTT) CQ2019-63 |
HTTP streaming technology is widely used in video streaming. In HLS and MPEG-DASH which are representative protocols of... [more] |
CQ2019-63 pp.33-37 |
| IA | 2019-01-25 16:50 |
Tokyo | Tokyo Metropolitan Univ. Akihabara Satellite Campus | A Wireless Ad Hoc Networks Localization Method Robust for Addition of Nodes using Improved Vivaldi Takafumi Okuyama, Takafumi Hayashi (Niigata Univ.) IA2018-59 |
Currently, various services using the location information of the terminal (node) are deployed. Although GPS is mainly ... [more] |
IA2018-59 pp.31-37 |
| CQ | 2017-07-28 16:15 |
Hyogo | Kobe University | A Video Bitrate Selection Method to Reduce the Traffic Volume While Maintaining QoE Takuto Kimura, Arifumi Matsumoto, Takafumi Okuyama, Jun Okamoto (NTT) CQ2017-49 |
It is reported that users who use the video streaming service emphasize less traffic volume than quality. However, since... [more] | CQ2017-49 pp.111-116 |
| CQ (2nd) |
2017-01-21 12:30 |
Osaka | Osaka University Nakanoshima Center | [Poster Presentation]
A network-assisted video pacing method improved by partial video data reception Takuto Kimura, Takafumi Okuyama, Arifumi Matsumoto, Takanori Hayashi (NTT) |
We have proposed a network-assisted video pacing control method that receives video data at a timing with relatively hig... [more] | |
| CQ | 2017-01-20 13:15 |
Osaka | Osaka University Nakanoshima Center | A study for improving a goodput estimation method in video streaming services Takafumi Okuyama, Takuto Kimura, Arifumi Matsumoto (NTT) CQ2016-103 |
In the video distribution service using HTTP based Adaptive bitrate streaming technology, we have studied a method that ... [more] | CQ2016-103 pp.75-80 |
| IN | 2012-04-12 16:20 |
Kyoto | Kyotofu-Chusho-Kigyo-Kaikan | [Invited Talk]
Technical Trends for NAT and NAT Traversal Tomohiro Nishitani, Takafumi Okuyama, Toshiyuki Iwata (NTT Com) IN2012-5 |
According to IPv4 exhaustion, ISP and mobile operator have introduced Network Address Translation(NAT) to suppress consu... [more] | IN2012-5 pp.21-24 |
| IN, NS (Joint) |
2009-03-03 11:10 |
Okinawa | Okinawa-Zanpamisaki Royal Hotel | A Proporsal of Threshold Calculation for Monitoring the Quantile of Packet Transfer Delay Takafumi Okuyama, Katsunori Ori (NTT) IN2008-161 |
In management of quality-awared IP networks, it is necessary to monitor the networks in order to recover accidents or qu... [more] | IN2008-161 pp.173-178 |
| ICM, CQ, NS (Joint) |
2008-11-13 18:25 |
Fukushima | Nihon University | Spectrum Analysis of Packet Transmission Delay and Its Application to Network Management Katsunori Ori, Takafumi Okuyama (NTT) CQ2008-52 |
[more] | CQ2008-52 pp.39-44 |
| IN, MoNA (Joint) |
2006-11-16 16:50 |
Kumamoto | Investigation of the trade-off between the reduced delay jitter and the increased traffic load due to the multipath forwarding Takafumi Okuyama, Kenta Yasukawa, Katsunori Yamaoka (Tokyo Tech) MoMuC2006-57 |
Delay jitter degrades the quality of delay-sensitive streaming services. We investigated the use of multipath-based dela... [more] | MoMuC2006-57 pp.23-27 |
|
| MVE, CQ, MoNA (Joint) |
2006-01-27 14:50 |
Oita | Beppu Onsen Spring (Resorpia Beppu Hotel) | Performance evaluation of path-set configuration scheme for delay jitter reduction by utilizing multipath Takafumi Okuyama, Kenta Yasukawa, Katsunori Yamaoka (titech) |
Delay jitter causes QoS degradation in delay sensitive real-time multimedia communications. We focused on delay jitter r... [more] | MoMuC2005-83 pp.55-60 |
| NS | 2005-06-23 16:25 |
Fukuoka | Production and Systems, Waseda Univ.(Kitakyusyu) | A Secure Campus Public Network using User and MAC Address Binding Authentication to Reduce Operational Costs Takafumi Okuyama, Noriyuki Takahashi, Kenta Yasukawa, Yukio Shigenari, Takamichi Miyata, Katsuyoshi Iida (TokyoTech) |
Many high educational institutes including universities are now deploying campus public LAN to enable accessing educatio... [more] | NS2005-45 pp.29-32 |
| NS, IN | 2005-03-03 10:10 |
Okinawa | Okinawa Zanpa-misaki Royal | Proposal and Evaluation of Multiple Path Routing for Reducing Delay Jitter Takafumi Okuyama, Kenta Yasukawa, Katsunori Yamaoka (TokyoTech) |
Delay jitter and packet loss cause QoS degradation in real-time multimedia communication applications. Previous studies... [more] |
NS2004-220 IN2004-220 pp.119-124 |
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