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This paper carried out a study on the uplink bandwidth request and handling for different service classes in WiMAX. The real time Polling Service (rtPS) acquires uplink bandwidth through contention based and polling mechanism. Each of the rtPS service is polled by Base Station (BS) on a periodic basis. Long waiting in polling mechanism may delays packets transmission. In this paper, the authors observed that polling mechanism used by rtPS could be further improved. On top of that, bandwidth wastage is observed when a BS is allocating bandwidth in uplink transmission. Conversion from bandwidth request in byte to Physical Slot (PS) causes extra unused bandwidth been allocated.
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