Traffic scheduling algorithm with enforced minimum rate reservation for IEEE 802.16D wimax systems

• Main Author: Dimaala, Fernando Mercado
• Format: text
• Language: English
• Published: Animo Repository 2012
• Online Access: https://animorepository.dlsu.edu.ph/etd_masteral/4331
• Institution: De La Salle University

WiMAX (Worldwide interoperability for Microwave Access) is one of the most promising technologies currently providing the last-mile access. It is demonstrated that WiMAX is a viable alternative to the cable modem and Digital Subscriber Line (DSL) technologies due to its high resource utilization, easy implementation and low cost. Furthermore, WiMAX not only enhances the existing features of the competitive cabled access networks, but provides high data rate applications with a variety of Quality of Service (QoS) requirements. The scheduling scheme plays an important role in the quality of service (QoS) provision. IEEE 802.16d specification does not describe the scheduling scheme though. The existing models involved tagging the packets with QoS parameters. This will always ensure that prioritization will take place based on this labeling scheme. The network needs to schedule this traffic appropriately and strike a balance between processing the requirements dictated by its tagging and the given channel capacity, ensuring that the packets of information will have acceptable allocation. Efficient scheduling design is left for designers and developers and thus providing for QoS for IEEE 802.16 system is a challenge for system developers. There are a good number of literatures available to analyze the performance of the standard however few studies describing the scheduling algorithm are to be appreciated. To analyze these studies, a classification based on the scheduling mechanism or method used in the different proposition will be presented. In this paper, based on the QoS architecture, a scheduling algorithm with starvation prevention will be proposed and simulated.