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International Journal of Digital Multimedia Broadcasting
Volume 2009, Article ID 329073, 9 pages
http://dx.doi.org/10.1155/2009/329073
Research Article

Modeling and Performance Analyses of Hybrid Cellular and Broadcasting Networks

Institute for Communications Technology, Braunschweig Technical University, Schleinitzstrasse 22, 38106 Braunschweig, Germany

Received 1 March 2009; Revised 28 October 2009; Accepted 30 November 2009

Academic Editor: Sandro Scalise

Copyright © 2009 Peter Unger and Thomas Kürner. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Mobile communication services are getting more and more important and, in particular, multimedia services have attracted the interest of the users. Mobile TV is one of the most demanded candidates. Powerful and efficient communication systems are needed, which provide high capacities, especially at the downlink. Furthermore, interactivity is essential for supporting the user needs and to extend the service offering. As one possible solution to meet the mentioned requirements, we consider the combination of the cellular network UMTS and the mobile broadcast network DVB-H, which form a hybrid network. We investigate the performance of hybrid networks and develop a system model, which describes the hybrid network and the load switching between both networks. One of the contributions is the definition of the switching bound concept, which represents an efficient tool to assess the necessity and the feasibility of hybrid networks and the amount of load switching. The performance indicators cell load and grade of service are analyzed by using theoretical and realistic scenarios.