Abstract
Quality of Service (QoS) is the ability of a network to provide a service at an assured service level. The availability of different classes of scheduling services in WiMAX enables multiple services and applications. This is a key advantage of WiMAX (and 4G technologies) over current 3G wireless technologies. The subject of contention slot allocation is still an open research area in WiMAX networks since the WiMAX specifications leaves that open for network operators to define their own contention slot and bandwidth request allocation algorithm to promote design differences. This article presents a mathematical model for access delay estimation. The access delay for the WiMAX network is calculated on a per frame basis. The algorithm for average access delay is used to estimate the average delay on the network by varying the number of subscriber station; contention slots and probability of transmission. This algorithm will help network operators of WiMAX to be able to estimate whether the delay on the network can guarantee the QoS needed for the service flows.
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