Скачать или смотреть SMPTE 2018: Non-blocking Multicast Networks for Transporting Stream Media

Leaf-Spine architecture is widely adopted as a scalable multi-stage network. However, for media transport purpose, nonblocking conditions for any combination of multicasts should be taken into account. In this paper, a new approach for building three-stage Clos networks with nonblocking multicast capability is proposed. First, a wide-sense nonblocking (WSNB) condition and a rearrangeable nonblocking (RNB) condition for nonblocking multicast networks are presented. The proposed conditions put focus on the distribution of inputs at the middle stage, rather than the distribution at the output stage. Second, the proposed conditions are evaluated by mapping to leaf-spine networks with commodity building block switches. The network size is evaluated by calculating the sum of required building block switches. In the best case of the evaluation results, up to 50% of the switches can be reduced compared with the best-known WSNB condition, and the proposed WSNB networks show good coverage in relatively smaller but practical sizes of networks. The proposed RNB networks always show better results than the known RNB multicast conditions. Read full paper at: https://ieeexplore.ieee.org/document/...



Presented By: Takeshi Shimizu



SMPTE (pronounced "simp-tee"), the organization whose standards work has supported a century of advances in entertainment technology and whose membership spans the globe, holds the SMPTE Annual Technical Conference & Exhibition in Los Angeles each October. The event is considered the world's premier forum for the exploration of media and entertainment technology. More information about this year’s upcoming event is available at www.smpte2018.org.

The people of the Society of Motion Picture and Television Engineers, or SMPTE, have sorted out the details of many significant advances in media and entertainment technology, from the introduction of "talkies" and color television to HD and UHD (4K, 8K) TV. Since its founding in 1916, SMPTE has received an Oscar® and multiple Emmy® Awards for its work in advancing moving-imagery engineering across the industry. SMPTE has developed thousands of standards, recommended practices, and engineering guidelines, more than 800 of which are currently in force today. SMPTE Time Code™ and the ubiquitous SMPTE Color Bars™ are just two examples of SMPTE's notable work. As it enters its second century, SMPTE is shaping the next generation of standards and providing education for the industry to ensure interoperability as the industry evolves further into IT- and IP-based workflows. Visit www.smpte.org for more information.

SMPTE's global membership today includes more than 7,000 members: motion-imaging executives, creatives, technologists, researchers, and students who volunteer their time and expertise to SMPTE's standards development and educational initiatives. A partnership with the Hollywood Professional Association (HPA) connects SMPTE and its membership with the businesses and individuals who support the creation and finishing of media content. Information on joining SMPTE is available at www.smpte.org/join. #SMPTE #Multicast #Networks