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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 17 of 17  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
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
 Results 1 - 17 of 17  /   
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