J. Wolf

Network Resource Management for Real-Time Streams within a Multimedia Document Server Architecture.

In Proc. of 49. Internationales Wissenschaftliches Kolloquium (IWK), Illmenau, 2004


The strong increase of the whole internet community and the ongoing quick growth of data rates available for end-users has led to an enhanced demand for accessing various kinds of information. Among others, the demand for miscellaneous information and entertainment documents provided in different multimedia formats increases permanently. To accommodate these demands more and more service providers are placing various kinds of multimedia documents online on the web at the users' disposal. These documents can be continuous media like audio/video streams as well as text, pictures, or mixtures of them. They are made available either for commercial or educational use or simply for informational purposes. In order to transmit continuous media streams with sufficiently good quality, a certain quality-of-service (QoS) has to be guaranteed for these streams. Basically, two common possibilities exist in order to guarantee the service quality as required by the users of a network: either, one can use resource reservation or, alternatively, one could rely on priorization combined with admission control}. In this paper we present a possible architecture for a system storing multimedia documents at different stations. In order to provide the required QoS to each stream within the internal network, a system for resource management based on resource reservation is introduced. The parameterization of the resource management and its impacts on the system's communication behavior is investigated, whereby different aspects of quality appraisal attract our interest. Thus, both aspects from the operator's angle as well as the influences of trimmed QoS from the user's point of view are investigated. For this purpose we present benchmarks like PSNR oriented evaluations, reflecting viewer perceived quality for video streams. The main goal of this work is to highlight different aspects of our resource management approach for real-time streams within a local network, considering the architecture of a multimedia document server as an application relevant example. Important for practical application are the procedures to adjust the parameters of such a system. Therefor, by means of several series of experiments we point out correlations between parameterization and the supply of either operator's or user's needs.


Full paper [.pdf] (850 KB)


  author       = {Jürgen Wolf},
  title        = {Network Resource Management for Real-Time Streams within a Multimedia Document Server Architecture.},
  booktitle = {Proc.~of 49.~Internationales Wissenschaftliches Kolloquium (IWK)},
  pages     = {297-302},
  volume    = 2,
  address   = {Ilmenau},
  month     = {September},
  year      = 2004