Mr. Tsuji, Mr. Miyagi and Mr. Usui will make a presentation at the IEICE Technical Meeting on Photonic Network in March.
The titles and authors are as follows.

03/13,14 Technical Meeting on Photonic Network @Ohama Nobumoto Memorial-Hall(Okinawa, Ishigakijima)

Authours : Tomohiro Tsuji, Mikio Kaneko, Yutaka Arakawa, Satoru Okamoto, Naoaki Yamanaka
Title : Study and Implementation on P2P based Contents Delivery Network System using Cooperation of Server and Clients
Abstract : Although CDN(Contents Delivery Network) is the remarkable network to transmit multimedia contents fast, it could not reduce the download time for rich contents such as HDTV(High Definition TeleVision). So, we implemented the P2P based Contents Delivery Network System that download contents from not only the Contents Server but also Clients who finished downloading the contents. To select the download site, we send Pings to the list of download site, and then select the download site which has the shortest RTT. But, in this implementation requests from Clients flock to the download site which has the shortest RTT, because the download site has been selected only by Client side. As a result, there are possibility that download time deteriorates. In this paper, we propose a “P2P based Contents Delivery Network System using Cooperation of Server and Clients” which is aiming for load-balancing by adjusting the candidates of download sites given to the client at the server side, and by restricting the number of maximum connections of each candidate. The performance of our proposed methods and the prototype system are evaluated by computer simulations. As a result, we showed that the contents delivery time of our proposals are reduced up to 40%compared to the prototype system.

Authours : Hiroyuki Miyagi, Yusuke Okazaki, Ryota Usui, Yutaka Arakawa, Satoru Okamoto, Naoaki Yamanaka
Title : Performance Evaluation of Grid Computing Using Parallel Data Link
Abstract : In a grid computing environment, a task is divided into multiple processes and the processes are distributed to multiple processing nodes via networks. The network characteristics such as bandwidth and latency affect the task performance. In recent years, with the growth of wide area network technologies, various grid applications are developed and the requirement for bandwidth of wide area networks becomes large and it reaches more than 100Gbps.
In this paper, we focus on parallel data links, such as link aggregation, to make bandwidth higher. By experiments, the performance of grid computing using parallel data links is evaluated.

Authours : Ryota Usui, Motomi Akagi, Hiroyuki Miyagi, Yutaka Arakawa, Satoru Okamoto, Naoaki Yamanaka
Title : The Experiment of Inter Service Parts Connection Techniques for Ubiquitous Grid Networking Environment (uGrid)
Abstract : With the advance of ubiquitous society, we asuumes that an environment in which everything is connected to networks will come. We define a ubiquitous grid networking environment (uGrid) as follows: uGrid is an environment that everything all over the world can be defined as a service parts, it is possible to search for the
service parts of the desire from all service parts in the world, those searched service parts are combined through the network and users can enjoy their desired service. In the uGrid, user uses other user’s device when user connect to service parts. Therefore, it is necessary to control with the device on the connected user side concerning the communication from others. In this paper, to realize the ubiquitous grid networking environment (uGrid), we implement the experiment of inter service parts connection techniques that USB over IP device is controlled by Proxy.