KITAMURA YASUICHI, LEE YOUNGSEOK, SAIKIYAMA RYO, OKAMURA KOJI
IPSJ journal 49(2) 603-614 Feb 2008
In this paper, we explain how the network failures had been caused by the natural disaster, describe how the restoration methods had been took, and present the lessons learned from the recovery procedures. At 21: 26 of December 26th (UTC+9) 2006, ...
Transactions of Information Processing Society of Japan vol.42 No.12 pp. 3102-3111(12) 3102-3111 Dec 2001
IP multicast is an effective technology on the one-to-many and many-to-many communications. Multicast applications use UDP(User Datagram Protocol) for transport protocol and have the responsibility for reliable communications. Then it is difficult...
IEICE technical report. Internet Architecture 110(206) 13-18 Sep 2010
The partner countries of the author's remote collaboration activities has been started from Korea in 2003 and extended to China, East-South Asia, Oceania, United state and finally reached to Europe. As the most recent remote collaborations, the ca...
IEICE technical report. Life intelligence and office information systems 109(450) 31-36 Feb 2010
Recently, Lifelog analyzation has been studied. In it, a set of landscape images taken by a person with cameras is used as one of Lifelog data of the person. The conventional method to extract the person's movement from images of Lifelog contains ...
This paper analyzed the statistical information to assess the traffic behaivior in Internet. There is a problem with statistics analysis that it is impossible to anomaly detection in real time, but we can forecast a change in Internet traffic by t...
情報処理学会研究報告インターネットと運用技術（IOT） 2007(104) 21-26 Oct 2007
We devise the method that understanding the connectivity by using information and transportation which already exist on the Internet. Ordinaly, network manager analyzes connectivity by refer to BGP(Border Gateway Protocol) table or network flow. B...
IEICE technical report. Internet Architecture 107(280) 15-20 Oct 2007
This paper analyzed the statistical information to assess the traffic behaivior in Internet. There is a problem with statistics analysis that it is impossible to anomaly detection in real time, but we can forecast a change in Internet traffic by t...
IEICE technical report. Internet Architecture 107(280) 21-26 Oct 2007
We devise the method that understanding the connectivity by using information and transportation which already exist on the Internet. Ordinaly, network manager analyzes connectivity by refer to BGP(Border Gateway Protocol) table or network flow. B...
ロボティクス・メカトロニクス講演会講演概要集 2007 "2A1-H10(1)"-"2A1-H10(2)" May 2007
In this paper, a remote surgery experiment between Japan and Thailand using a Research and Development Internet is described. In the experiment, the image and audio information was transmitted by a newly developed low latency CODEC system to short...
情報処理学会研究報告インターネットと運用技術（IOT） 2006(109) 31-36 Oct 2006
BGP (Border Gateway Protocol), a routing protocol between ASes (Autonomous Systems), always selects the stable routes. However, when the network failures occur, the alternative routes will be selected dynamically according to BGP routing policy. T...
情報処理学会研究報告インターネットと運用技術（IOT） 2006(109) 37-42 Oct 2006
This paper analyzed the relationship between the change of AS-path length and Flow Data, and analyzed the distribution of subject that a certain organization is communicating. It is expected that the route should be improved and will be needed for...
IEICE technical report. Internet Architecture 106(309) 31-36 Oct 2006
BGP (Border Gateway Protocol), a routing protocol between ASes (Autonomous Systems), always selects the stable routes. However, when the network failures occur, the alternative routes will be selected dynamically according to BGP routing policy. T...
IEICE technical report. Internet Architecture 106(309) 37-42 Oct 2006
This paper analyzed the relationship between the change of AS-path length and Flow Data, and analyzed the distribution of subject that a certain organization is communicating. It is expected that the route should be improved and will be needed for...
Fujino Y., Hashizume M., Tanoue K., Konishi S., Ieiri S., Shimizu S., Nakajima N., Okamura K., Ueda Y., Shimono M., Mitsuishi M., Warisawa S., Arata J., Takahashi H., Pitakwatchara P.
Proceedings of the Society Conference of IEICE 2006(2) "S-35"-"S-36" Sep 2006
Technical report of IEICE. OCS 105(563) 13-18 Jan 2006
In this paper, we report the field trial results of an optical 3R regenerator that we have successfully demonstrated using 40-Gbit/s transmission systems over a 400-km-long installed cable. In the application of the optical 3R regenerator in the f...
In this paper, a remote surgery experiment, which was conducted between Japan and Korea by using the developed minimally surgical system is described. A research internet, APII (Asia-Pacific Information Infrastructure), which consists of an optica...
In this paper, we report the results of a field trial that we have demonstrated using GMPLS multilayer integration system for dynamic wavelength path switching. In the trial using the GMPLS multilayer integration system, GMPLS control, measurement...
Technical report of IEICE. OCS 104(618) 25-30 Jan 2005
In this paper, we report the results of a field trial that we have demonstrated using GMPLS multilayer integration system for dynamic wavelength path switching. In the trial using the GMPLS multilayer integration system, GMPLS control, measurement...
Transactions of Information Processing Society of Japan 45(2) 509-516 Feb 2004
We have a serious issue when a large number of accesses concentrate on one server. CDN (Content Delivery Network) technology can solve this issue by distributing some surrogates on a wide area. Each surrogate on CDN can customize original contents...
情報処理学会研究報告インターネットと運用技術（IOT） 2002(11) 81-86 Feb 2002
The appropriate location, of sender of IP Multicast is changeable as the distribution of clients on network is changeable as times gone, when the total network cost would be concern. If the redundancy server could be located over network and the a...
IEICE technical report. Internet Architecture 101(634) 43-48 Jan 2002
The appropriate location of sender of IP Multicast is changeable as the distribution of clients on network is changeable as times gone, when the total network cost would be concern. If the redundancy server could be located over network and the ap...
IEICE technical report. Information networks 100(410) 45-51 Nov 2000
The super high speed Internet is realizing by recent great improve of the network technology. The kind of data-link layer is not specific on such the high speed Internet, On the other hand, encapsulating data-link layer over IP is necessary for th...
Technical report of IEICE. Multimedia and virtual environment 100(413) 45-51 Nov 2000
The super high speed Internet is realizing by recent great improve of the network technology. The kind of data-link layer is not specific on such the high speed Internet, On the other hand, encapsulating data-link layer over IP is necessary for th...
OKAMURA Koji, HIRABARU Masaki, HORI Yoshiaki, IKENAGA Takeshi, ARAKI Keijiro
Technical report of IEICE. Multimedia and virtual environment 100(412) 9-15 Nov 2000
Kyushu Giga-POP project is the network research project, in which the network research institutes share the high speed Internet access lines and research the architecture for inter-connection to the more high speed Internet back bone. The core net...
Technical report of IEICE. Multimedia and virtual environment 98(616) 77-84 Feb 1999
This paper proposes a framework of spatial hypermedia for a networked live video which is generated by a remote controllable camera, We also explain our prototype system, "Name-1t, "based on this framework, Labels annotating objects in a video are...
This paper proposes a framework of spatial hypermedia for a networked live video which is generated by a remote controllable camera. We also explain our prototype system, "Name-it, " based on thisframework. Labels annotating objects in a video are...
The Network Transparentable Virtual Video Capture Device introduced in this paper, offers the APIs of the remote peripheral equipments to the utility programs as if the remote equipments are connected locally. In this paper, the goal and outline o...
Debate has long been neglected in the school curriculum in Japan. Even today, most classes in middle school are teacher-centered with only limited interaction among students. However, the nation's Ministry of Education recently acknowledged the im...
It is feasible to use computers without the geographical constrain by small and right computers and wireless networks. These computers and networks can be used effectively for the communication of continuous media which supports remote class and m...
NAKAGAWA S., NAGATA H., OKAMURA K., ISHIKAWA K. B., HONJO T., YAMAOKA K., YAMAGUCHI N.
IPSJ SIG Notes. MBL 1997(117) 19-24 Dec 1997
To apply the multimedia multicast mobile terminal for the supporting tele-medicine on Fiber Scope, we evaluate the basic technical matters for the implementations. In medical field, it will be useful for distance-education between the medical doct...
Recently, the number of K12 schools which use Multimedia for sending their information over Internet is increasing. when we have access to their homepages, we have problems that must wait to have access to them or cannot connect their servers, bec...
In Kobe University, its Campus Network was speeded up by ATM in 1996 and its Computer Systems were replaced to more powerful one in 1997. Recently, both the systems are dedicated to many users in Kobe University and the various problems have been ...
DAVIC (Digital Audio Video Council) standardizes bi-directional Multimedia Service, such as Video on Demand. Internet access is hot topic on discussion of current DAVIC specification. But contents date is never transmitted on Internet by current D...
DAVIC (Digital Audio Video Council) standardizes bi-directional Multimedia Service, such as Video on Demand. Internet access is hot topic on discussion of current DAVIC specification. But contents date is never transmitted on Internet by current D...
Network users in Kobe University can receive benefit of High Speed Network Services of KHAN (Kobe Hyper Academic Network). The Services are university wide hight speed network service by ATM and locally segmented high speed/intelligent network ser...
Continuous Media Transmission on Bandwidth Reserred Network
The quality of continuous media, such as sound and video, decreases when an application software which uses these continuous media handles them. In this paper, we propose event synchronization which offers synchronization among related continuous ...
On global distributed environment, when we communicate using voice, we cannot only speak fairly, but also each node cannot receive packets in the same order as generated because transmission delay at each node is different each other. We clear the...
We have been researching the mechanisms which guarantee timing constraint for media processing in scheduling and resource management at operating system level. In the case of the multiple media processing, it is important to guarantee timing const...
IEICE technical report. Computer systems 94(383) 9-16 Dec 1994
We have been researching the mechanisms which guarantee timing constraint for media processing in scheduling and resource management at operating system level.In the case of the multiple media processing,it is important to guarantee timing constra...
We study on the development of Multimedia processing environment which can guarantee the QOS (Quality of Service). In our project, the synchronization is one of important problems. We implemented the Multimedia Synchronization Mechanism which can ...
Next generation Parallel and Distributed Environment must support multimedia composed of multiple continuous media streams which need to be synchronized with each other. We have already defined QoS, i.e., the degrees of continuity and synchronizat...
We notice that quality of a single medium and synchronization between multimedia are very important for communication on multimedia communication tools. We are designing and developing Multimedia Operating System PDE-II. PDE-II will be able to gua...
We have been researching the mechanisms which guarantee the timing constraint for the scheduling and resource management of operating system for proper multimedia processing. In this paper, we propose the mechanism of the resource reservation for ...
Next generation Parallel and Distributed Environment must support multimedia composed by multiple continuous media streams which need to be synchronized each other. We have already defined QoS, i.e., the degrees of continuity and synchronization o...
There are three lebel of problems in human communication model based on psychology, which are the technical problem, the semantic problem and the effectiveness problem. On the other hand, we defined two kind of quality of service of electric media...
Distributed Multimedia Synchronization by Extended Logical Time
Proceedings of the 9th International Conference on Information Networking 1994
Group Synchronization for Human Communication on Global Distributed Environment
Proceedings of the 10th International Conference on Information Networking 1996
Design and Implementation of Selective RTP Translator
Proceedings of The 12th International Coference on Information Networking 1998
Design and Architecture of Next Generation Internet Infrastructure in Japan
Proceedings of the International Conference on Computer Communication 1999
Design of Scalable Interdomain IP Multicast Architecture
Proceedings of the Internet Conference'2000 2000
Augmented Video Hypermedia on Internet
Proceedings of Symposium on Applications and Internet (SAINT) 2001 Work shop 2001
Design of General Reliable Multicast Architecture with Active Network
Proceedings of the 15th Internet Conference on Information Networking 825-830 2001
Recently there are many distributed operating systems and parallel programming languages. However, because of lacks of assumption of the concrete applications using these operating systems and programming languages , occasionally the functions for...
IEICE technical report. Internet Architecture 11 Feb 2011
It is recently being required to green network equipments in the Internet. In accordance with this requirements, Adaptive Link Rate (ALR) has been proposed, which reduce power consumption on links between two network equipments by dynamically chan...
IEICE technical report. Information networks 13 Jan 2011
Nowadays many researchers are studying Future Internet, which considers a new network that is independent from the existing current Internet. And within the Future Internet, the Locator/Identifier separation architecture is heavily studied, in whi...
