Statistical Approach in Bandwidth Granting Process for IEEE 802.16 Networks

IEEE 802.16 is a Wireless Metropolitan Area Network (WMAN) technology that supports both high speed data transmission and quality of service (QoS). Other than the data speed, QoS is always another concern to the end users and applications. However, providing QoS in IEEE 802.16 is a challenging mission because it involved many components that interact with each other. One of the important components in QoS provisioning process is the bandwidth granting process in which the amount of bandwidth to be granted to a SS is determined. Researchers tend to use simple algorithm for this purpose. However, it is found that some refinement in bandwidth granting process would greatly improve the network performance. This paper proposes a statistical approach to improve the bandwidth granting process. Through extensive simulations, the proposed statistical approach is shown to provide better network performance than conventional approach used by other researchers.