This doctoral thesis proposes a framework has controling and management the return network
in Digital Television from four components: Digital Television Provider, Interactivity
Terminal, Return Channel Provider, and Content Provider. Together, they interact based on a
signaling mechanism that propagates QoS restrictions associated to the current interactive
programming through the data carrousel system. The set of them also provide an admission
control that investigates, periodically, the return channel status allowing or restricting the
access according to the necessities of the interactive applications. Moreover, the system is so
flexible that admit applications as in large scale as in small scale (local), thanks to the
mobility of the service provider. An e-gov/e-health application was development in Xlet Java
to evaluate the performance of the system. The performance analysis was proceeded using
measurement and modeling techniques according to the system scale. In the last mille, some
technologies of low cost and without periodically billing were tested such as wireless local
area network. In large scale, the system was evaluated in different scenarios by means of
simulation using the Network Simulator.
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