RoSE Project

General Description

• Introduction
• Project mission
• RoSE architecture

Introduction

The recent evolution of the coding and transmission technologies for multimedia has rendered the realization of the so-called "triple-play" services possible, in which a single, packet-based converged network is used to provide Internet connectivity, telephony and TV services in a ubiquitous setting.

However, while the advances in hardware technologies have followed a fast pace towards the provisioning of aforementioned services (including mobility) to consumers with high quality, the utilization of such variety of contents (coded in different qualities and standards) through the Internet, or in general an architecture based on IP protocol, turns out to be yet an open problem, above all in the domain of IPTV services. Although various software solutions exist to manage the streaming of these multimedia flows, such solutions are typically integrated suboptimally and thus introduce several challenging problems. For instance, the multimedia servers currently available renders difficult to support heterogenous clients (ranging from cellular telephones, computers, to dedicated set-top boxes) or variable conditions of networks (in terms of available bitrates, physical layer impairments, packet losses, variable delay, etc.). In particular, the proliferation of broadband wireless networks exacerbates these challenges. However, the capabilities to alleviate those issues are crucial to support QoS for service support and provisioning. Moreover, the support for complex and intelligent multimedia applications that can be loaded and executed on diverse set of clients is still in embryonic state and necessitates difficult compromises between performance and flexibility.
Based on these considerations, the Department of Information Science and Engineering (DISI) of the University of Trento has recently activated a group of researchers with leading-edge interdisciplinary competences in ICT, constituting the iMedia Application Lab. One of the main research topics of our lab is audio/video streaming and IPTV.
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Project mission

The Robust Streaming Environment (RoSE) Project has been started in order to be a catalyst of the activities carried in DISI and other external partners on multimedia networks, devices and services. RoSE is focused on:

• The development of a testbed for the experimentation of IPTV-based services;
• Validation of solutions for the streaming of multimedia flows towards heterogeneous clients in adaptive way to the conditions of the networks.

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RoSE general architecture

As just been described in the above RoSE mission section, one of the objective of this project is the development of a testbed for the experimentation of different IPTV services. The first generic architecture that has been developed inside our project is focused on one of the most common problems that nowadays the multimedia servers have to handle: the efficient support of heterogenous clients (with different hardware and different computational power) on different typology networks and conditions.
The generic architectural view of RoSE is depicted in Figure 1.
Fig. 1: Architectural view of RoSE
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Deliverables:

• Software : Please refer to the Released Software page for the entire list of software published by our lab.
• Documents:
• A short presentation on MDC/SVC and RoSE Project: This overview presents a literature survey and where the RoSE stands for.
• Report I: First performance evaluation cycle of the RoSE. This also presents how the delivered software is utilized in a testbed implementation.
• Report II: Second performance evaluation cycle of the RoSE. It includes more scenarios and more realistic experiments/tests.

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