Qos provisioning in mobile networks based on aggregate bandwidth reservation

Authors:
Kelvin L. Dias;Stenio F. L. Fernandes;Djamel F. H. Sadok
Affiliations:
UFPA, Electrical and Computer Engineering, Belém, PA, Brazil;CEFET-AL, Informatics, Barão de Atalaia, Maceió, AL, Brazil;UFPE, Computer Science, Recife, PE, Brazil
Venue:
ISPA'07 Proceedings of the 5th international conference on Parallel and Distributed Processing and Applications
Year:
2007

Citing 10
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Abstract

This paper proposes a novel resource management framework that integrates Call Admission Control (CAC) and aggregate reservation of bandwidth for mobile networks in a scalable fashion. Our proposal avoids peruser reservation signaling overhead and takes into account the expected bandwidth to be used by calls handed off from neighboring cells within a prediction interval through the Trigg and Leach Method (an adaptive exponential smoothing technique). Our scheme is compared through simulations with the ACR (Adaptive Channel Reservation) scheme, a dynamic reservation-based proposal that uses GPS systems to extrapolate users' movement and to trigger reservations in the next predicted cell. The simulation results show that our proposal provides the best performance in terms of handoff dropping probability and can achieve similar levels of call blocking probability as compared to ACR. In addition, our proposal can grant an upper bound on handoff dropping probability even under very high loads.