Modeling and Performance Analyses of Hybrid Cellular and Broadcasting Networks

Mobile communication services are getting more and more important and, in particular, multimedia services haveattracted the interest of the users. Mobile TV is one of the most demanded candidates. Powerful and efficient communicationsystems are needed, which provide high capacities, especially at the downlink. Furthermore, interactivity is essential forsupporting the user needs and to extend the service offering. As one possible solution to meet the mentioned requirements, weconsider 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 loadswitching between both networks. One of the contributions is the definition of the switching bound concept, which represents anefficient tool to assess the necessity and the feasibility of hybrid networks and the amount of load switching. The performanceindicators cell load and grade of service are analyzed by using theoretical and realistic scenarios