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Sociedade Brasileira de Telecomunicações

On the Integration of Scheduling and Allocation in OFDMA-Based WiMAX Networks

Mobile devices and real-time applications are incre- asingly demanding metropolitan network access with guaranteed quality of service. Current research points to the need of two main stages to provide quality of service in OFDMA- based WiMAX networks. These stages, called scheduling and allocation are deeply investigated on the literature. However, details on the integration of these mechanisms are not provided. Therefore, in this paper, we propose the integration of scheduling and allocation through a threshold criteria that considers the diversity of the traffic, limiting the amount of data and mapping overhead sent to allocation. The results show that our proposal is fundamental to integrate scheduling and allocation and is able to improve quality of service parameters, such as data allocation and delay.

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