On the effects of channel error compensation on the WF2Q+ scheduling performance in IEEE 802.16/WiMAX networks

Authors:
Sara Pizzi;Antonella Molinaro;Antonio Iera
Affiliations:
University "Mediterranea" of Reggio Calabria, Italy;University "Mediterranea" of Reggio Calabria, Italy;University "Mediterranea" of Reggio Calabria, Italy
Venue:
The Fourth International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness & Workshops
Year:
2007

Citing 5
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Abstract

The IEEE 802.16 standard has been promoted by the WiMAX (Worldwide Interoperability for Microwave Access) forum as a leading wireless broadband access technology. The packet scheduling mechanism represents the core of WiMAX QoS architecture; however, each vendor needs to design its own algorithm to offer effective quality provisioning to the end user. This paper reports on the design and analysis of a channel-aware WF2Q+ based scheduling algorithm for downlink traffic delivery in a point-to-multipoint WiMAX network. A technique for compensation of channel errors is proposed to preserve QoS and fairness of the scheduling algorithm when working under non-ideal channel conditions. Simulation analysis confirms the effectiveness of the compensation mechanism under different channel conditions, network load, and traffic characteristics.