Miss Hirao got Fujiwara reward.
Fujiwara reward is for students who belong in the science and technology department and participate actively in social activities, cultural activities, sports and arts.
And also, that students have to keep good academic results.
Miss hirao was recognized for good academic results and the results of sports and got Fujiwara reward.
Dr. Shimizu’s paper, who works in Fujitsu Labs., has got IEICE Communications Society Best Paper Award (the best letter).
Sho Shimizu, Wouter Tavernier, Ko Kikuta, Masahiro Nishida, Daisuke Ishii, Satoru Okamoto, Didier Colle, Mario Pickavet, Piet Demeester, and Naoaki Yamanaka, “Interoperability Experiment of VLAN Tag Swapped Ethernet and Transmitting High Definition Video through the Layer-2 LSP between Japan and Belgium,” IEICE Trans. Commun., Vol. E93-B, No. 3, pp. 736-740 , March 2010.
Yamanaka Lab. supports your science educational activity (the experiment of Photopone) for children.
We provide a manual, materials, and tools for an experiment program. We also send volunteer students. So, you can open a science experiment program easily.
These supports are all free.
For details, see this brochure (in Japanese).
Mr. Yamada’s paper regarding with TCP/IP over SCTP/IP Parallel Networking with Parallel Routes Transmission
is accepted by IEICE.
Title:Performance evaluation of TCP/IP over SCTP/IP Parallel Networking with Parallel Routes Transmission
Authors: Shota YAMADA Daisuke ISHII, Satoru OKAMOTO, and Naoaki YAMANAKA
Summary: In this paper, Transmission Control Protocol/Internet Protocol (TCP/IP) over Stream Control Transmission Protocol (SCTP)/IP parallel transmission system is proposed to realize large TCP/IP throughput over parallel transmission.
The proposed system is implemented on the software switch to evaluate parallel transmission performance. The evaluation results indicated that the proposed system can achieve 90% throughput compared with the serial transmission when the delay difference among parallel routes is 20 msec.
Mr. Takeshita’s paper regarding with Internet architecture based on optical aggregation technologies is published in Journal of IEICE （Apr. 2011）
<a href=”http://search.ieice.org/cs/”>http://search.ieice.org/cs/</a>
Title: Highly Energy Efficient Layer-3 Network Architecture Based on Service Cloud and Optical Aggregation Network
Authors: Hidetoshi TAKESHITA, Daisuke ISHII, Satoru OKAMOTO, Eiji OKI, Naoaki YAMANAKA
Publication
IEICE TRANSACTIONS on Communications Vol.E94-B No.4 pp.894-903
Publication Date: 2011/04/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Photonic Network Technologies in Terabit Network Era)
Keyword: power consumption, service cloud, optical aggregation, cloud router, future network,
Summary:
The Internet is an extremely convenient network and has become one of the key infrastructures for daily life. However, it suffers from three serious problems; its structure does not suit traffic centralization, its power consumption is rapidly increasing, and its round-trip time (RTT) and delay jitter are large. This paper proposes an extremely energy efficient layer-3 network architecture for the future Internet. It combines the Service Cloud with the Cloud Router and application servers, with the Optical Aggregation Network realized by optical circuit switches, wavelength-converters, and wavelength-multiplexers/demultiplexers. User IP packets are aggregated and transferred through the Optical Aggregation Network to Cloud transparently. The proposed network scheme realizes a network structure well suited to traffic centralization, reduces the power consumption to 1/20-1/30 compared to the existing Internet, reduces the RTT and delay jitter due to its simplicity, and offers easy migration from the existing Internet.
“GMPLS Adapter Box mini” which is a product of <a href=”http://www.allgreen-networks.com/”>AllGreen Networks Ltd.</a> based on Yamanaka Lab’s research activities, supported by SCOPE program, PREDICT program, and Lambda Access Project, is present on the website of <a href=”http://www.plathome.co.jp/jirei/obs_allgreen.html”>Plat’Home Co., Ltd.</a> (written in Japanese)
Ms. Akimune made presentations at Technical Committee on IEICE.
The titles and authours are as follows.
Authors: Rumi AKIMUNE, Jun MATSUMOTO, Jumpei MARUKAWA, Takashi KURIMOTO,
Daisuke ISHII, Satoru OKAMOTO, and Naoaki YAMANAKA
Title：A Study of Fast Fault Recover Method using k-Hop Flooding
for Wide Area Layer2 Network
Abstract：A fast fault recovery method using temporary forwarding of frames has been proposed for wide area layer 2 network with high reliability. In the conventional method, the fault detection nodes forward frames based on pre-established recovery table when a fault occurs. The tables, however, are created without consideration on destination node of path, the frames are dropped before the arrival to the destination node. In this paper, a new fast fault recovery method using k-hop flooding is proposed for decrease in frame losses with no arrival to destination node. The proposed method can decrease frame losses with forwarding from fault detection nodes to all neighbor nodes. By computer simulation, it is shown effective range in proposed method from several perspectives.
Mr. Hara made presentations at Technical Committee on Network System (NS).
The titles and authours are as follows.
Authors: Yutaro HARA, Yuji SHIMADA, Takehiro SATO, Kunitaka ASHIZAWA, Kazumasa TOKUHASHI, Daisuke ISHII, Satoru OKAMOTO, and Naoaki YAMANAKA
Title： A Study of Next Generation Metro-Access Hybrid Scalable Network by
Using PLZT Ultra High Speed Optical Wavelength Selective Switch
Abstract：We study a novel optical access network with active optical switches, called ActiON (Active Optical Network), as a next generation access network to replace PON (Passive Optical Network). In this paper, we focus on a scalability of ActiON so that it accommodates 600000 users to propose next generation metro-access hybrid scalable network by using PLZT optical wavelength selective switch. In the evaluation, we discuss about energy consumption and blocking ratio. We show that proposed network reduces 65 % of energy consumption compare to
the present network. Furthermore, blocking ratio of proposed network is always lower than a quality assurance of the Internet service.
Mr. Sato and Nomura made presentations at Technical Committee on Photonic Network (PN) in Februally 28 ‐ March 1.
The titles and authours are as follows.
Authors: Takehiro Sato, Kunitaka Ashizawa, Kazumasa Tokuhashi, Daisuke Ishii, Satoru Okamoto, Eiji Oki, and Naoaki Yamanaka
Title： A Design Method of Large Scale Optical Switching Network with Low Optical Loss and High Reliability
Abstract：An optical aggregation network, which connects an giant router and thousands of users in one hop,has proposed to reduce the power consumption of today’s Internet greatly. This paper shows a design method of an all-optical aggregation network using 2×2 PLZT optical switches. The proposed architecture achieves both low optical loss and high reliability by combining the features of tree topology and ring topology.
Authors: Yuki Nomura, Jumpei Maruyama, Haruka Yonezu, Hidetoshi Takeshita, Yuji
Oikawa, Daisuke Ishii, Satoru oKAMOTO, and Naoaki Yamanaka
Title： Path Recon五guration Method Using Next Hop Table for Autonomous GMPLS Control in Energy efficient Network MiDORi
Abstract：Recently, energy savlng Of network is emerglng aS an important problem due to an increase of trafRc and power consumption･ Thus, we have been proposing the MiDORi(Multi-(layer, path, and resources) Dynamically Optimized Routing) network architecture to achieve energy saving by aggregating the traffic using Traffic Engineering and switching off the unused port of network equipment. In MiDORi, NM(Network Manager) Conagures each switch during path reconfiguration･ However, there is a problem that the configuration time becomes huge in large network. This paper proposes autonomous MiDORi network using modified GMPLS (Generalized Multi Protocol Label Switching), in which signaling protocol controls establishment of paths as well as power of ports for fast reconfiguration･ Moreover, in this paper, new path switching method which each node holds next-hop table for power controlling is proposed. Implementation shows that proposed architecture can redllCe 79% of path establishment time.