<title>Pyramid broadcasting for video-on-demand service</title>

TLDR

Pyramid broadcasting is a new Video‑On‑Demand scheme that multiplexes frequently requested movies on the broadcast network, dramatically improving access time and bandwidth efficiency. The study evaluates pyramid broadcasting analytically and experimentally on an Ethernet LAN to demonstrate its advantages. The approach uses storage at the receiver to enable multiplexing, and the authors implemented and tested it on an Ethernet LAN. Results show that as bandwidth increases, access‑time gains grow exponentially, bandwidth requirements rise only logarithmically, and overall performance outperforms conventional broadcasting.

Abstract

The proposed scheme of pyramid broadcasting is a new way of rendering Video On Demand service. In pyramid broadcasting, the most frequently requested movies are multiplexed on the broadcast network, resulting in radical improvement of access time and efficient bandwidth utilization. This is achieved by using storage at the receiving end. As the available bandwidth increases, the improvement in access time is exponential as opposed to just linear improvement as in the case of conventional broadcasting. The larger the bandwidth of the network, the better the access time gain due to pyramid broadcasting. As the access time requirement decreases, the bandwidth requirement in the case of conventional broadcasting increases linearly while the bandwidth requirement in the case of pyramid broadcasting increases only logarithmically. We provide analytical and experimental evaluations of pyramid broadcasting based on its implementation on ethernet LAN, illustrating its advantages.