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A directionally based bandwidth reservation scheme for call admission control

Islam, Mohammad M.; Murshed, Manzur and Dooley, Laurence S. (2002). A directionally based bandwidth reservation scheme for call admission control. In: 5th International Conference on Computer and Information Technology (ICCIT '02), 26-28 December 2002, Dhaka, Bangladesh.

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Abstract

This paper proposes a new advanced Call Admission Control(CAC) strategy involving for the first time, a bandwidth reservation scheme that is influenced by the direction attribute of a mobile terminal (MT). Aside from the Quality-of-Service (QoS) parameters, the direction attribute plays a key role in efficiently reserving resources for MTs supporting multimedia communications for different QoS classes. The framework for a direction-based CAC system is entirely distributed and may be viewed as a message passing system, where MTs inform their neighbouring base stations (BS) not only of their QoS requirements, but also of their mobility parameters. The base stations then predict future demand and reserve resources accordingly, only admitting those terminals that can be adequately supported. The bandwidth reservation scheme proposed in this paper, integrates the direction attribute into the conventional Guard Channel (GC) scheme. Simulation results prove that this new scheme offers significant improvements in both Call Blocking Probability (CBP) and bandwidth utilization, under a variety of differing traffic conditions.

Item Type: Conference Item
Academic Unit/Department: Mathematics, Computing and Technology > Computing & Communications
Interdisciplinary Research Centre: Centre for Research in Computing (CRC)
Item ID: 16245
Depositing User: Laurence Dooley
Date Deposited: 23 Jul 2009 10:24
Last Modified: 26 Jan 2011 07:38
URI: http://oro.open.ac.uk/id/eprint/16245
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