Blocking Probability Calculation for Cellular Systems with WCDMA Radio Interface Servicing PCT1 and PCT2 Multirate Traffic

Modelling of the access part of a multi-service mobile network with service priorities

“…The developed simulator is intended to model the traffic capacity of the system, and thus to model the system at the so-called call (flow or connection) level [38]. At this level, technological parameters are rather insignificant for the accuracy of mapping the system to be modelled [44]. In the simulation experiments presented in all included graphs, each point on the curve represents an average value of the blocking probability obtained in the fifth series of the simulation.…”

“…Given the concurrent nature of the call service in two multiservice systems (radio interface and Iub interface), the article employs the fixed point methodology [42]. This method has already been used in earlier works of the authors (e.g., in [44,[46][47][48][49][50]) in order to take into account the concurrency of service processes that occur in different multi-service systems. The fixed point methodology is characterized by a high effectiveness, e.g., [42].…”

The extended connection‐dependent threshold model for call‐level performance analysis of multi‐rate loss systems under the bandwidth reservation policy

“…We proposed a recurrent formula for the efficient calculation of link occupancy distribution and consequently call blocking probabilities, link utilization, and throughput per service class. Moreover, these calculations are recurrent (Kaufman-Roberts recursion), a feature that broadens the EMLM's applicability range to wired, wireless, or optical networks (e.g., [18][19][20][21][22][23]). The accuracy of the new model is verified by simulation.…”

“…In the EMLM, Poisson arriving calls of stream service classes are accommodated to a single link of certain capacity. Moreover, these calculations are recurrent (Kaufman-Roberts recursion), a feature that broadens the EMLM's applicability range to wired, wireless, or optical networks (e.g., [18][19][20][21][22][23]). The calls' service time can be arbitrarily distributed [13].…”

“…This fact leads to an accurate calculation of link occupancy distribution and call blocking probabilities (CBP), the key call-level performance metric. Moreover, these calculations are recurrent (Kaufman-Roberts recursion), a feature that broadens the EMLM's applicability range to wired, wireless, or optical networks (e.g., [18][19][20][21][22][23]). The call admission policy has a strong impact on teletraffic models and on the efficient CBP calculations ([3, 4]), whereas in some cases (e.g., under the 'partial overlap sharing' policy [5]), recursive formulas cannot be derived.…”