Simulation of User-Perceived QoS in Hybrid Broadcast and Telecommunication Networks

An approach for modeling and simulation of userperceived quality of services in hybrid (broadcast and telecommunication) networks is presented in this paper. The term "user-perceived quality of service" goes beyond the QoS concepts for packet based end-to-end communication. Rather, the service and the information transmitted by such a service will be modeled at a more abstract, semantic level. General components of user-perceived QoS will be defined. However, the technical QoS parameters of different parts of hybrid networks may contribute to this user-perceived QoS model as well as application specific characteristics, client terminal features or user profiles. A use-case driven modeling methodology is introduced which leads to simulation models applicable to simulation experiments for characterization and optimization of services in hybrid networks from a user’s QoS perspective. As an example, user-perceived QoS of a data service in digital TV will be simulated with OMNeT++.