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Edge transcoding with name-based routing: demo
Abstract
This demonstration shows the use of ICN for tile-based panoramic video streaming. To reduce the bandwidth usage, tiles are encoded with different qualities. Tiles having a valuable impact on user QoE are fetched by the client at high quality, the others at low quality. A well-known drawback of having a video with multiple qualities is the reduction of the cache hit probability, since clients can single out different quality for a same tile. To cope this problem, we introduce transcoding functionality on edge nodes, which exploits ICN routing by name for edge processing implementation.
Performance evaluation of caching systems is an old and widely investigated
research topic. The research community is once again actively working on this
topic because the Internet is evolving towards new transfer modes, which
envisage to cache both contents and instructions within the network. In
particular, there is interest in characterizing multi-cache systems, in which
requests not satisfied by a cache are forwarded to other caches.
In this field, this paper contributes as follows. First, we devise a simple
but accurate approximate analysis for caches fed by general "renewal" traffic
patterns. Second, we characterize and model the traffic statistics for the
output (miss) stream. Third, we show in the simple example case of tandem
caches how the resulting output stream model can be conveniently exploited to
analyze the performance of subsequent cache stages. The main novelty of our
work stems in the ability to handle traffic patterns beyond the traditional
independent reference model, thus permitting simple assessment of cascade of
caches as well as improved understanding of the phenomena involved in cache
hierarchies.
This demonstration shows an efficient panoramic streaming application with ICN functionalities. The camera device splits its field-of-view into multiple named tiles, and clients request minimum tiles for their field-of-view. These named tiles are cached at the intermediate routers and the camera device can reduce the amount of traffic on its access network. By utilizing the ICN's merits, this application can work with limited resources, like IoT environment.
Panoramic streaming is a particular way of video streaming where an arbitrary Region-of-Interest (RoI) of high-spatial resolution videos is transmitted. It allows users to navigate interactively around the video and thus select anytime the portion of it they are interested in. The most basic approach consists of each user interacting with the system indicating the desired RoI. Then an encoder associated with each user encodes the desired RoI. However, such a system does not scale well. Instead, we consider tile based panoramic streaming, where users receive a set of tiles that match their RoI, and propose a low-complexity compressed domain video processing technique for tile based panoramic streaming using H.265/HEVC that generates a single video bitstream out of the selected tiles so that single hardware decoders can be used to decode the RoI video stream.
Named Data Networking (NDN) - A Future Internet Archtecture
- Ndn Project
NDN Project. 2017. Named Data Networking (NDN) ś A Future Internet
Archtecture. https://named-data.net/.
A General, Tractable and Accurate Model for a Cascade of LRU Caches
- Giuseppe N Blefari Melazzi
- Alberto Bianchi
- Andrea Caponi
- Detti
N Blefari Melazzi, Giuseppe Bianchi, Alberto Caponi, and Andrea Detti. 2014.
A General, Tractable and Accurate Model for a Cascade of LRU Caches. IEEE
Communications Letters 18, 5 (2014), 877ś880.