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Abstract
In the past decade, the wireless communications market has experienced tremendous growth, and this growth is likely to continue in the near future. In addition to an increase in the number of users, ever more demanding applications will appear, resulting in ever greater resource requirements. The limited radio frequency spectrum available can no longer support this increasing demand, and the required quality of service will no longer be attainable if an efficient solution is not found.
Mobile telephony has been for many years the most popular application supported by mobile systems such as the Global System for Mobile communications (GSM). Recently, the use of mobile data applications has gained popularity. Different protocols and technologies are in place today to provide wireless and mobility communications in various environments.
General Packet Radio Service (GPRS) is part of the evolution path towards 3G. So there are many publications to study main parameters that affect the performance of GPRS and to propose techniques that enhance the overall performance
In this thesis, an OPNET model of a General Packet Radio Service (GPRS) network has been used to capture some results concerning the GPRS Performance and study how these results vary with changing the main traffic features.
We study the quality of service sensitivity to the change of the packet inter arrival distribution function which is one of the major factors of representing the source applications beside the file size. We check different distribution function with different values for its parameters and how that affects main parameters of the GPRS quality of service management such as the delay and throughput.