DocumentCode :
1960273
Title :
A QoS model for random access systems with multiple request classes
Author :
Abdel-Hamid, Y. ; Gebali, F. ; Gulliver, T.A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Victoria, Victoria, BC, Canada
fYear :
2009
fDate :
23-26 Aug. 2009
Firstpage :
331
Lastpage :
335
Abstract :
In this paper, we present a simple and realistic two-class QoS model for random access systems. This model provides a general and effective approach to QoS classification by categorizing the available resources into distinct service classes. We present a simple Markov model of the subscriber stations to define the system transitions and state probabilities. Performance metrics based on random access success probabilities, average throughput and acceptance probabilities are investigated. This model provides a useful analytical tool for most contention systems that utilize random access as a mechanism for network entry, resource acquisition and contention-based or best effort data transmission. For example, the IEEE 802.16 bandwidth request and initial ranging mechanisms in the uplink contention channel. For simplicity, we consider only two classes, however the technique can easily be extended to any number of classes.
Keywords :
Markov processes; WiMax; data communication; quality of service; telecommunication standards; IEEE 802.16 bandwidth request; Markov model; QoS model; data transmission; multiple request classes; random access systems; resource acquisition; subscriber stations; uplink contention channel; Analytical models; Bandwidth; Cost function; Data communication; Delay; Measurement; OFDM; Resource management; Throughput; WiMAX;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, Computers and Signal Processing, 2009. PacRim 2009. IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
978-1-4244-4560-8
Electronic_ISBN :
978-1-4244-4561-5
Type :
conf
DOI :
10.1109/PACRIM.2009.5291351
Filename :
5291351
Link To Document :
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