A case for caching middleboxes for scalable MMT video delivery

Abstract

We present a content-based caching architecture for scalable MMT video delivery. Our architecture places a caching proxy in the path between an MMT server and its clients. Between an MMT server and a caching proxy, we exploit the popular HTTP protocol to reliably synchronize the video contents by their fragments while the caching proxy delivers the MMT asset to the clients via the standard MMTP protocol. This split architecture not only allows distributing the load on theMMT server but also supports MMT clients without any modification on the MMTP protocol. Furthermore, our architecture supports content-based caching with little run-time overhead, eliminating any redundant network transfers.