“New virtual energy supply plant concept” is on the Denkishinbun electrical news paper in June 14th 2010.

Virtual energy supply plant is just linked with distributed new energy sorces such as home Gas turbine named Ene-farm by Tokyo Gas. Future grid power supply system realize bi-directional energy supply.
So virtual energy supply plant can supply combination of new energy resources in the network.

EVNO : Energy virtual network operator is new concept for controlling this energy control in the Grid.

Yamanaka Lab. exhibited a booth at Smart Grid Exhibition 2010 on June 16th to 18th.

• Remote Power Controlled Layer2 Switch: Smart technology to provide low-power network
• EVNO(Energy Virtual Network Operator): Next generation power grid based on communication network technology was shown at the booth.

Pictures are here.

Thank you for visiting our booth and discussing about our researches!!

On June 15, 2010, Japanese newspaper “KAGAKU KOGYO NIPPO” picked up the start of producting the next generation green network switch.

To reduce the energy consumption in the IP and Ethernet transport network, Yamanaka Lab. focuses on a new traffic engineering approach aggregating traffic into specific links and dynamically powering off interfaces of routers/switches. This framework is named as “MiDORi (Multi-(layer, path, and resources) Dynamically Optimized Routing) Network Technologies”. “midori” is a Japanese word which means “green” in English.
As one of key components for MiDORi Technologies, Yamanaka Lab. and Allgreen Networks company developed the next generation green network switch. Allgreen Networks company has started to product this switch as “Gigabit Green(ECO) Layer-2 Switch”.

•  KAGAKU KOGYO NIPPO (June 15, 2010, page 10) [Japanese]
*An access to this article is restricted by password.

To reduce the energy consumption in the IP and Ethernet transport network, Yamanaka Lab. focuses on a new traffic engineering approach aggregating traffic into specific links and dynamically powering off interfaces of routers/switches. This framework is named as “MiDORi (Multi-(layer, path, and resources) Dynamically Optimized
Routing) Network Technologies”. “midori” is a Japanese word which means “green” in English.
As one of key components for MiDORi Technologies, Yamanaka Lab. and Allgreen Networks company developed the next generation green network switch. Allgreen Networks company has started to product this switch as “Gigabit Green(ECO) Layer-2 Switch”.
Yamanaka Lab. will exhibit the demonstration of this green layer-2 switch at Smart Grid Exhibition 2010 on June 16th to 18th.

• Press Release from Keio Univ. on June 14 (Japanese)
• Brochure of “Gigabit Green(ECO) Layer-2 Switch” (Japanese)
• Allgreen

Mr. Ashizawa made presentations at the HPSR2010 in 14th June.

The titles and authours are as follows.

Authors: Kunitaka Ashizawa, Kazumasa Tokuhashi, Daisuke Ishii, Satoru Okamoto, Naoaki Yamanaka and Eiji Okiz
Title： Efficient Singlecast / Multicast Method For Active Optical Access Network Using PLZT High-speed Optical Switches
Abstract： We propose a new efficient singlecast / multicast method for active optical access network using PLZT 10 nsec high-speed optical switches. The Active Optical Network, called ActiON, has been proposed using slot type switched optical network. Compared with Passive Optical Network (PON), ActiON can quadruplicate the number of subscribers (128 users) per OLT and double the maximum transmission distance (40 km) between OLT and ONUs. However, ActiON uses slot based switching method, so it is difficult to realize the multicast delivery. In this paper, we propose the efficient singlecast / multicast method for ActiON by using PLZT optical switch elements which are controlled as ”distribution mode” like an optical splitter by applying mid-control voltage. In addition, a new efficient multicast slot allocation method is proposed and formulated as a linear programming problem. This formula develops the maximum number of users which is able to be connected by multicast and the minimum number of slots is used for multicast users.

Mr. Yamada made presentations at the iPOP2010 in 6th June.

The titles and authours are as follows.

Authors: Shota Yamada, Jumpei Marukawa, Daisuke Ishii, Satoru Okamoto, Naoaki Yamanaka
Title： GMPLS aware intelligent cloud network
Abstract：With the appearance of the cloud network, high speed data communication among data centers is necessary. However, because the data is transmitted through the Internet, network bandwidth is not enough. To construct large bandwidth WAN at low cost, we propose an Intelligent Cloud Network. Fig.1 shows basic concept of the Intelligent Cloud Network. In the Intelligent Cloud Network, data delivered with parallel transmission and lower cost private lines that are lower bandwidth are applied as multiple routes. In this paper, we propose parallel transmission system. In this system, parallel routes are set up with GMPLS. Under the GMPLS environment, OSPF is used on the control plane. Every node in proposal environment can realize the network topology in order to advertise and exchange the route information to each other. In the proposed system, OSPF is used to discover the multi-path between two TCP over SCTP adaption gateways and RSVP plays a role to establish parallel routes between two gateways. The proposed system is implemented on the software switch, as shown in Figure2, and end-to-end throughput is evaluated.

Yamanaka Lab. will exhibit a booth at Smart Grid Exhibition 2010 on June 16th to 18th.

•Remote Power Controlled Layer2 Switch: Smart technology to provide low-power network
•EVNO(Energy Virtual Network Operator): Next generation power grid based on communication network technology
will be shown at the booth.

If you are intrested at our research topics about smart grid or smart network, please come and see us!