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Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/3573

Title: Capacity analysis of reservation-based random access for broadband wireless access networks
Authors: Vinel, A
Ni, Q
Staehle, D
Turlikov, A
Keywords: random access; capacity; reservation; medium access control; WiMAX
Publication Date: 2009
Publisher: IEEE
Citation: IEEE Journal on Selected Areas in Communications. 27(2) 172-181.
Abstract: Abstract—In this paper we propose a novel model for the capacity analysis on the reservation-based random multiple access system, which can be applied to the medium access control protocol of the emerging WiMAX technology. In such a wireless broadband access system, in order to support QoS, the channel time is divided into consecutive frames, where each frame consists of some consequent mini-slots for the transmission of requests, used for the bandwidth reservation, and consequent slots for the actual data packet transmission. Three main outcomes are obtained: first, the upper and lower bounds of the capacity are derived for the considered system. Second, we found through the mathematical analysis that the transmission rate of reservationbased multiple access protocol is maximized, when the ratio between the number of mini-slots and that of the slots per frame is equal to the reciprocal of the random multiple access algorithm’s transmission rate. Third, in the case of WiMAX networks with a large number of subscribers, our analysis takes into account both the capacity and the mean packet delay criteria and suggests to keep such a ratio constant and independent of application-level data traffic arrival rate.
URI: http://bura.brunel.ac.uk/handle/2438/3573
Appears in Collections:School of Engineering and Design Research papers
Electronic and Computer Engineering

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