GAMING

Writer GAMING

On-Demand Gigabit-class Video Transmission Successfully Proven on Testbed Network

Synergy of video applications and IP-optical networking to be showcased at SC09

 

    Nippon Telegraph and Telephone Corporation (NTT) has developed a novel technology that enables on-demand transmission of gigabit-class wideband video.

    NTT verified their achievement in a wide area experiment in cooperation with National Institute of Information and Communications Technology (NICT).

    With this advancement, users can achieve steady transmission of high-density video such as HDTV by acquiring a path in the network whenever it is needed, without allocating additional network resources or re-optimizing the provisioned network resources.

    The experiment was carried out using GEMnet2 and JGN2plus, the R&D testbed networks provided by NTT and NICT, respectively. We plan to demonstrate these results at the upcoming SC09 held in Portland, Oregon (USA), November 14-20, 2009, by international connection between the test network and the exhibition booth.

    The achievement was sponsored in part by NICT, under the "Research and Development of Dynamic Network Technology" project.

 

Background
    NTT laboratories had previously developed a technology to transmit uncompressed video streams through IP networks, which they called i-Visto. However, since it required a very large bandwidth of more than a gigabit per second, users could not immediately start the transmission unless they waited for the network operator to allocate network resources along the transmission path.

    Moreover, in order to prevent quality degradation, it is essential to verify the accuracy of the video stream packets, and to do so at multiple points in the network. However, because that requires special equipment that is too expensive to distribute to many points in the network, it was not feasible.

 

Achievements
    We have developed a basic technology to provide stable and on-demand transmission of gigabit-class wideband video using high-speed IP-optical networking. This consists of a technology that automatically sets up a very large bandwidth circuit in the optical network on demand – upon the user’s request to start video transmission; and PC-based technology that can be placed at many points in the network with the ability to observe any minute change in the behavior of the video stream packets – changes which could result in quality deterioration.

    We also succeeded in verifying our concept through the actual deployment of uncompressed HDTV transmission in a wide area experiment network. We believe that these achievements will lead to widespread use of gigabit-class video transmission.

 

Future Plans
    We are planning further enhancements to network and video collaboration that will allow greater functionality, such as adaptive control, so that it can be employed by broadcasters and other high-end users. Furthermore, our aim is for this technology to eventually be used in many other arenas that can benefit from high-resolution video, including telemedicine and e-learning.
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