Performance and reliability analysis of computer systems: an example-based approach using the SHARPE software package
Analytical Model of Cellular Mobile Networks with Adaptive Data Connections
Proceedings of the 12th European Simulation Multiconference on Simulation - Past, Present and Future
Performance Analysis of Cellular Mobile Communication Networks Supporting Multimedia Services
MASCOTS '98 Proceedings of the 6th International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems
A new protocol for the integration of voice and data over PRMA
IEEE Journal on Selected Areas in Communications
Analytical comparison of different GPRS introduction strategies
Proceedings of the 3rd ACM international workshop on Modeling, analysis and simulation of wireless and mobile systems
Performance of GSM networks with general packet radio services
Performance Evaluation
A Queueing Model for a Wireless GSM/GPRS Cell with Multiple Service Classes
NETWORKING '02 Proceedings of the Second International IFIP-TC6 Networking Conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; and Mobile and Wireless Communications
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The introduction of new service categories withdifferent bandwidth requirements, e.g., data and multimedia, to cellularmobile radio networks makes many of the traditional mechanisms for controlingtraffic unusable orless efficient. The call admission and the handover handling are of the mostsensitive issues in this extension to new services. The performance of allservices includingthe traditional voice and the new services can be dramatically affected ifappropriate schemes are not used. In this paper, we propose call admission andhandover handling schemes for a cellular mobile network that offers twoservice types: voice and data. The data connections are assumed to transmitatdifferent transmission rates that are integer multiples to that of one radiochannel. In the case of congestion, the base station asks the active dataconnections to reduce their transmission rate in order to provide freechannels for the newly arrived request of both service types. This isbasically intended for incoming handover requests. The request will berejected if the transmission rate of the active connections reaches a givenminimum rate. Similar mechanism can also be used for new call arrivals, butsome priority can be given to handovers by setting a higher transmission ratethreshold for the new call rejection. As an extension to the proposedscalability, aqueuing of new calls is also proposed and analyzed. Analytical models werebuilt for the two proposed schemes together with the traditional channelreservation scheme. The effect of different traffic and configurationparameters on the performance measures like the grade of service, blockingprobabilities, and utilization, are studied using the proposed technique.Results show that the proposed schemes provide very good performance and morefairness among the different service types.