System Level Performance Metrics in Mobile Wireless Communication Networks Considering Both Resource Insufficiency and Link Unreliability

Teletrafflc modeling of mobile communication networks has been commonly addressed by considering only resource insufficiency, while the effect of the unreliability nature of wireless channels has been largely ignored because of the complexity involved in its study. To fill this void, a general analytical model for the system level performance evaluation of mobile wireless networks taking into account both resource insufficiency and link unreliability is proposed and mathematically analyzed in this paper. In the mathematical analysis, for the sake of generality, the involved time variables (i.e., cell dwell time, unencumbered call interruption time, and channel holding time) are considered to have a general probability distribution. Then, original and easily computable mathematical expressions for many fundamental system level performance metrics are derived. The proposed analytical model allows obtaining more general and realistic results.