Category Archives: news

MR. SHIMIZU’S PAPER REGARDING WITH NEWLY STRUCTURED ROUTER NETWORK ARCHITECTURE WAS ACCEPTED FOR FUTURENET Ⅱ.

Mr. Shimizu’s paper regarding with Newly Structured Router Network Architecture was accepted for FutureNet Ⅱ.

title:Newly Structured Router Network Architecture using Cloud Control Plane and
Forwarding Plane
authors:Sho Shimizu Shan Gao Daisuke Ishii Naoaki Yamanaka
abstract:This paper proposes a novel network architecture called cloud control
plane (Cloud C-plane) to reduce the power consumption of networks. In
Cloud C-plane, the forwarding functions and control functions are
decoupled, and the control functions are placed in the cloud. In
addition, physical network topology is modified to improve the energy
efficiency when the load of traffic changes. The routing engine on a
dynamically reconfigurable processor (DRP) is a key component of Cloud
C-plane. We implement the prototype of the routing engine on an actual
DRP, and the experimental results show the execution time of the
prototype is 19 times faster in the shortest path calculation.

MS. ZHOU MADE PRESENTATION AT IA CONFERENCE.

Ms. Zhou made presentations at the IA conference in June.

The title and authours are as follows.

title:Reducing Network Power Consumption Using Dynamic Link Metric Method and Power Off Links
authors:Zhou Jia,Gao Shan,Aya Tsurusaki,Naoaki Yamanaka
abstract:According to several studies, the network power consumption is up to 10% of the worldwide energy consumption. To reduce the network power comsumption, we propose a novel approach to address the problem. The proposed approach dynamically modifies the weights of links and makes traffic aggregated to certain links and sets some links which load no traffic Power-Off. We did some network simulations, and our results indicate it gets good effect on reducing the network power consumption.

MR. ISHII’S PAPER REGARDING WITH GMPLS CONTROLLED NEXT GENERATION LAYER2 (NGL2) NETWORKS AND, MR. ASHIZAWA’S PAPER REGARDING WITH OPTICAL ACCESS NETWORK USING PLZT HIGH-SPEED OPTICAL SWITCHES WERE ACCEPTED FOR ECOC2009.

Mr. Ishii’s paper regarding with GMPLS controlled Next  Generation Layer2 (NGL2) networks and, Mr. Ashizawa’s paper regarding with optical access network using PLZT high-speed optical switches were accepted for ECOC2009.

title:TCP Friendly Active Optical Access Network Having Automatic Ranging and Slot Allocation Function
authors:Kunitaka Ashizawa, Kazumasa Tokuhashi, Daisuke Ishii, Yutaka Arakawa, Naoaki Yamanaka
abstract:A new optical access network using high-speed PLZT optical switch is presented. The access network, having automatic ranging and slot allocation fuction, can guarantee TCP throughput designing with frame cycle, slot size and guard time.

title:Experiment of Transport and Control Protocols in Control-plane Integrated Next Generation Wide Area Layer2 Network
authors:Daisuke Ishii, Kou Kikuta, Satoru Okamoto, Naoaki Yamanaka
abstract:This paper presents experimental results of GMPLS controlled Next Generation Layer2 (NGL2) networks. By experiment, it is confirmed that NGL2 paths can be established dynamically and correctly by the extended GMPLS for NGL2.

YAMANAKA LAB. WILL EXBIHIT THE BOOTH TO THE FIFTH INTERNATIONAL CONFERENCE IPOP2009 IN NICT (NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY) AT JUNE 11TH TO 12TH.

Yamanaka Lab. will exbihit the booth to the fifth international conference iPOP2009 in NICT (National Institute of Information and Communications Technology) at June 11th to 12th.The demonstration of Scalable Active Optical Access Network using High Speed Optical Switches is exhibited in the booth.

Related news
Dr. Ishii’s paper regarding with control functions for next generation wide area layer2 network was accepted for iPOP2009.

Ms. Gao’s Paper about Novel Traffic Engineering Method Using On-Chip Diorama Network was Accepted for 2009 International Workshop on High Performance Switching and Routing

Ms. Gao’s paper about novel traffic engineering method using on-chip diorama network was accepted for 2009 International Workshop on High Performance Switching and Routing (HPSR2009) as follows.

Title: “A Novel Traffic Engineering Method using On-Chip Diorama Network on Dynamically Reconfigurable Processor DAPDNA-2”

Abstract: This paper proposes a novel traffic engineering method using on-chip diorama network that consists of virtual nodes and virtual links. The diorama network is implemented on reconfigurable processor DAPDNA-2. In these years, traffic engineering has widely researched to guarantee QoS (Quality of Service). The proposal is an experimental solution with the on-chip diorama network, where virtual links and virtual nodes are constructed by some PEs (processing elements). We obtain the realistic traffic fluctuation through the behavior of virtual packets exchanged on the on-chip diorama network. In this paper, as first trial to achieve our final goal, we implemented diorama network and confirmed basic path calculation, where both functions are an essential function of our algorithm. The diorama network traffic engineering can realize more sophisticated network design like adaptive traffic balancing or multi-metric design.

 

Mr. Kikuta’s Letter Paper was Published in IEICE Trans. on Communications

Mr. Kikuta’s letter paper was published in IEICE Trans. on Communications.

IEICE Transactions on Communications, Vol. E92-B, No. 4, pp. 1353-1356, April 2009.

Title: “Multi-Domain VLAN Path Signaling Method having Tag Swapping Function for GMPLS controlled Wide Area Layer-2 Network”

Authors: Kou Kikuta, Masahiro Nishida, Daisuke Ishii, Satoru Okamoto, and Naoaki Yamanaka

Abstract: A multi-domain GMPLS layer-2 switch capable network with VLAN tag swapping is demonstrated for the first time. In this demonstration, we verify three new features, establishing path with destinating VLAN IDs, swapping VLAN ID on prototype switch, and management of VLAN IDs per domain. Using those three features, carrier-class Ethernet backbone networks witch support path route designation in multi-domain network can be established.

Mr. Okazaki, Mr. Yamashita, Mr. Ashizawa and Mr. Susa Made Presentation at Technical Committee on Photonic Network

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.

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.

Dr. Okamoto’s Letter Paper was Published in IEICE Trans. on Communications

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.