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Capacity analysis of reservation-based random access for broadband wireless access networks

Vinel, Alexey and Ni, Qiang and Staehle, Dirk and Turlikov, Andrey (2009) Capacity analysis of reservation-based random access for broadband wireless access networks. IEEE Journal on Selected Areas in Communications, 27 (2). pp. 172-181. ISSN 0733-8716

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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 reservation-based 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.

Item Type: Article
Journal or Publication Title: IEEE Journal on Selected Areas in Communications
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Departments: Faculty of Science and Technology > School of Computing & Communications
ID Code: 59074
Deposited By: ep_importer_pure
Deposited On: 10 Oct 2012 16:54
Refereed?: Yes
Published?: Published
Last Modified: 10 Apr 2014 00:15
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/59074

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