Analytical modeling of primary and secondary load as induced by video applications using UDP/IP

  • Authors:

  • B. E. Wolfinger;M. Zaddach;K. D. Heidtmann;G. Bai

  • Affiliations:

  • Department of Computer Science, Telecommunications and Computer Networks Division (TKRN), Hamburg University, Vogt-Kölln-Straíe 30, D-22527 Hamburg, Germany;Department of Computer Science, Telecommunications and Computer Networks Division (TKRN), Hamburg University, Vogt-Kölln-Straíe 30, D-22527 Hamburg, Germany;Department of Computer Science, Telecommunications and Computer Networks Division (TKRN), Hamburg University, Vogt-Kölln-Straíe 30, D-22527 Hamburg, Germany;Department of Computer Science, Telecommunications and Computer Networks Division (TKRN), Hamburg University, Vogt-Kölln-Straíe 30, D-22527 Hamburg, Germany

  • Venue:
  • Computer Communications
  • Year:
  • 2002

Quantified Score

Hi-index 0.24

Visualization

Abstract

A particular challenge, when trying to analyze and predict the behavior of subnetworks of the global Internet, refers to the task of elaborating a sufficiently realistic workload characterization. In particular, it is necessary to specify (work)load at different system interfaces. This paper presents a generalized proceeding for load modeling, which can be used to formally describe sequences of (communication) requests at well-defined interfaces within a network. At first, the basic proceeding is applied by way of example to the modeling of primary load, i.e. load at an interface close to end-users, whereby we focus on video sources. We then tackle the challenging problem of characterizing secondary load, i.e. load as it is occurring at a lower layer interface within a protocol/service hierarchy, and for this purpose, we suggest a new approach for analytical modeling of load transformations as they are typical for communication networks. The broad applicability and the high validity of our approach to model load transformations is exemplified by means of a comprehensive case study assuming video sources and considering some load transformation corresponding to the impact within a RTP/UDP/IP protocol hierarchy.