Mr. Okazaki, Mr. Yamashita, Mr. Ashizawa and Mr. Susa made presentation at Technical Committee on Photonic Network.
The presentation papers are as follows.

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Title: “Service Parts Connection based on Dynamic Lightpath Establishment in uGrid”

Authors: Yusuke Okazaki, Yuki Susa, Ryota Usui, Yutaka Arakawa, Satoru Okamoto, and　Naoaki Yamanaka

Abstract: With the advance of ubiquitous society, it is expected that everything will be connected to the network.Then, a ubiquitous grid networking environment (uGrid) has been proposed. In this environment, everything is defined as service parts and some service parts will be combined to provide new service for users. On the other hand, TV broadcast is one of the typical image distribution system that broadcasts contents to users. Thus, there are limitations by one-way system. In this paper, we propose next generation image distribution system in uGrid as a replacement of TV broadcast. In proposal, service parts are connected by lightpath which set up with GMPLS so that fixed bandwidth can be kept. As an emulation of proposal system, we implement the experimental environment which composed by Layer 2 switch and we demonstrate potential of service parts connection in proposal.

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Title: “Distributed Wavelength Allocation Scheme Considering Four Wave Mixing in All Optical Network”

Authors: Hirofumi Yamashita, Kazuki Irie, Yutaka Arakawa, Satoru Okamoto, and
Naoaki Yamanaka

Abstract: In this paper a novel distributed wavelength allocation scheme considering the four wave mixing (FWM) in all optical network is proposed. A main feature of the proposed scheme is that wavelengths are allocated by the wide interval as much as possible with considering wavelength usage condition of each link. Allocated wavelengths are calculated by a proposed expression wavelength intervals. Because of keeping the wide wavelength interval, the propose scheme can avoid using adjacent wavelengths and, can restrain generation of FWM. Evaluation results of the blocking probability are presented. It is indicated that the proposed scheme can improve the blocking probability values.

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Title: Parameter Design and Dynamic Slot Assignment considering TCP Throughput on Active Optical Access Network

Authors: Kunitaka Ashizawa, Kazumasa Tokuhashi, Kou Kikuta, Daisuke Ishii, Yutaka Arakawa, Satoru Okamoto and Naoaki Yamanaka

Abstract: We study a novel optical access network with active optical switches as next generation access network, called Active Optical Network (ActiON). In ActiON, a data is transmitted by fixed-length time，called ”slot”. So, in this paper, we focus on the parameter design of number of slots and transmission cycle considering TCP throughput,and dynamic slot assignment by periodically changing the number of allocation slots.

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Title:A Proposal for A uGrid Multi-Service Video Delivery Network Considers Security

Authors: Yuki Susa, Yusuke Okazaki, Ryota Usui, Yutaka Arakawa, Satoru Okamoto, Naoaki Yamanaka

Abstract: With the advance of ubiquitous society including IPv6, we assume the world that everything has an IP address and connect to the networks. In recent years, based on the above assumptions, a concept of the ubiquitous grid network environment (uGrid) has been generated. In uGrid, we dene everything all over the world given IP address as a service parts. Users will freely search for service parts that they want to use from all over the world through the networks, and then, they combine each parts so that they can construct a desired distributed system, service, and working environment. So, in this study, we propose the Multi-Service Video Delivery Network for the uGrid service, which is different from the unidirectional video delivery system like a existing TV reception and enable to response to various QoS(Quality of Service) watching demands. Moreover, we attempt to construct a video fltering transmission system using PLAYSTATION 3 (PS3) as a part of the delivery service, in which we consider the needs of the individual privacy protection and the increase of the home-use game consoles or Cell Broadband Engine (Cell) in uGrid. As a result of that, we conrmed that the PS3 functioned as a service parts of the video delivery system in uGrid.

Ms. Yonezawa made presentations at the CS conference in March.
The title and authors are as follows.

Title: “Queuing Method for Guaranteed Delay Jitter in Wide Area Ethernet”

Authors: Kazuko Yonezawa, Midori Terasawa, Masahiro Nishida, Sho Shimizu, Yutaka Arakawa, Satoru Okamoto, and Naoaki Yamanaka

Abstract: In recent years, Wide Area Ethernet has become widespread. Wide Area Ethernet is a technique which was expanded from the Ethernet to connect two separated bases using Ethernet. Because Ethernet is a technique for Local Area Networks (LANs), we need a queuing method which controls bandwidth, delay, and delay jitter to use real-time applications in Wide Area Ethernet. The conventional method named Deficit Round Robin (DRR) can control bandwidth and delay. In DRR, a Deficit Counter (DC) is set at each queue to control the frame size which the queue is able to send. However, it is difficult to control the delay jitter which greatly affects strictly real-time applications like haptic technology. Accordingly, we propose a method named Loan-Deficit Round Robin (L-DRR). L-DRR controls bandwidth, delay, and delay jitter using not only DC but also a Loan Counter (LC) to control the maximum delay. Finally, we show how our method affects delay jitter using a computation simulation.

The lab succeeded in the interconnection of the path computation server that calculated the route of an optical network between a lot of careers, and the success was published in some newspapers.

Dr. Okamoto’s letter paper was published in IEICE Trans. on Communications.

IEICE Transactions on Communications, Vol. E92-B, No. 3, pp. 1017-1019, March 2009.

Title: “Frame Loss Evaluation of Optical Layer 10 Gigabit Ethernet Protection Switching using PLZT Optical Switch System”

Authors: Satoru Okamoto, Sho Shimizu, Yutaka Arakawa, and Naoaki Yamanaka

Abstract: Frame loss of the optical layer protection switching using Plum bum Lanthanum Zirconium Titanium (PLZT) optical switch is evaluated. Experimental results show that typically 62us guard time is required for commercially available non-burst mode 10 Gigabit Ethernet modules.

Mr. Ishii and Dr. Okamoto’s paper co-worked with Dr. Imajuku of NTT communications etc. was published in the IEEE Communications Magazine.

Magazine: IEEE Communications Magazine, Vol.47, No.2, pp.168-175, February 2009.

Title: Multi-Area MPLS/GMPLS Interoperability Trial Over ROADM/OXC Network

Authors: Wataru Imajuku, Eiji Oki (NTT Laboratories), Rajiv Papneja (Isocore), Shinichiro Morishita (TOYO Corporation), Kenichi Ogaki, Masanori Miyazawa (KDDI R&D Laboratories Inc.), Keiji Miyazaki (Fujitsu Laboratories Ltd.), Hiroaki Nakazato (Fujitsu Ltd.), Hidetsugu Sugiyama, John Allen (Juniper Networks), Shinichi Hasegawa, Nobuhiro Sakuraba (ITOCHU Techno-Solutions Corporation), Itaru Nishioka (NEC Corporation), Shoichiro Seno (Mitsubishi Electric Corporation), Yoshihiro Nakahira (Oki Electric Industry Co., Ltd.), Daisuke Ishii, Satoru Okamoto (Keio University), Tara Van Unen (Agilent Technologies, Inc.), Mark Blumhardt (Alcatel USA Inc.), Hari Rakotoranto (Cisco Systems, Inc.), Vijay Pandian (Sycamore Networks)

Abstract: This article describes the first multi-area Multi-Protocol Label Switching (MPLS) and Generalized MPLS interoperability trial over Reconfigurable Optical Add/Drop Multiplexer (ROADM) and Optical Cross-Connect (OXC) network. The interoperability trial demonstrated the routing of Label Switched Paths (LSPs) over a multi-area GMPLS controlled ROADM/OXC network and the control of Ethernet over MPLS (EoMPLS) transport service on top of the GMPLS network. The trial was conducted using various network elements provided by 14 institutions and was carried out at Tokyo and Virginia. This article introduces the motivation of the trial, technical issues related to controlling multi-area MPLS/GMPLS networks, test network topology, and experimental results. The results show that the interior gateway routing protocol based multi-area routing architecture is a promising solution for the nationwide deployment of GMPLS networks within a carrier domain. Furthermore, this article discusses the technical issues of routing constraints in ROADM/OXC networks and the limit of multi-area routing without Path Computation Element Protocol (PCEP).