Parallel and Distributed Processing and Applications

Volume 4742 of the series Lecture Notes in Computer Science pp 908-919

Qos Provisioning in Mobile Networks Based on Aggregate Bandwidth Reservation

  • Kelvin L. DiasAffiliated withUFPA, Electrical and Computer Engineering, PO Box 8619, 66.075-900 - Belém, PA
  • , Stenio F. L. FernandesAffiliated withCEFET-AL, Informatics, Barão de Atalaia, S/N, 57.020-510, Maceió, AL
  • , Djamel F. H. SadokAffiliated withUFPE, Computer Science, PO Box 7851, Recife, PE

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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 per-user 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.