Modelling and Performance Evaluation of Mobile Multimedia Systems Using QoS-GSPN

Quality of Service (QoS) measurement of multimedia applications is one of the most important issues for call handoff and call admission control in mobile networks. Based on the QoS measures, we propose a Generalized Stochastic Petri Net (GSPN) based model, called QoS-GSPN, which can express the real-time behavior of QoS measurement for mobile networks. QoS-GSPN performance analysis methodology includes the formal expression and performance analysis environment. It offers the promise of providing real-time behavior predictability for systems characterized by substantial stochastic behavior. With this methodology we model and analyze the call handoff and call admission control schemes in the different multimedia traffic environments of a mobile network. The results of simulation experiments are used to verify the optimal performance achievable for these schemes under the QoS constraints in the given setting of design parameters.

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