Performance Analysis of Dynamic Resource Allocation with Channel De-allocation/Re-allocation in GSM/GPRS Networks

Resource allocation is a critical issue that determines the quality of service of GSM voice calls and GPRS data packet transmissions in an integrated GSM/GPRS network. In this paper, we investigate dynamic resource allocation schemes employing channel de-allocation (DAS) and re-allocation (RAS) schemes in such a network. An analytic model with general GPRS data channel requirement is developed to evaluate the performance of the schemes in terms of the GSM voice call blocking probability, GPRS data packet dropping probability, average GPRS data packet transmission time, channel utilization and system award. Our results indicate that RAS can considerably improve the system performance by combing different DAS strategies. It is also shown that the decision to choose the most appropriate dynamic resource allocation scheme has to be made based on the QoS requirement of the system