A priority based call admission control protocol with call degradation for cellular networks

Authors:
Ayman Elnaggar;Mokhtar Aboelaze;Maan Musleh
Affiliations:
Dept. of Electrical Engineering, Sultan Qaboos University, Oman;Dept. of Comp. Sc. & Eng., York University, Toronto, Canada;Dept. of Computer Engineering, The American University in Dubai, Dubai, UAE
Venue:
AIC'06 Proceedings of the 6th WSEAS International Conference on Applied Informatics and Communications
Year:
2006

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Abstract

Call Admission Control (CAC) protocols play a very important role in the performance of wireless networks. In this paper, we present a call admission control protocol for cellular wireless networks. Our protocol depends on degrading the existing calls by reducing the bandwidth allocated to them in order to admit "important" calls. Our protocol assign priorities for the incoming calls, and in the same time assign priorities to the existing calls, both admitted calls are admitted according to their priorities and the existing calls are degraded according to their priorities. We show simulation results for the relation between network utilization, call-blocking probability, and average assigned bandwidth during the life of the call.