This research proposes a quality of service (QoS)§architecture for WiMAX, including a contention period§management algorithm and a price-based scheduling§framework. With a derived probability-based optimal§contention window (P-OCW), we were able to devise a§contention slot allocation algorithm to allocate§contention minislots to flows based on P-OCW. In§addition, a price-based scheduling framework was§developed to provide price differentiation among§users. This scheduling framework was designed to work§using the TDD mode to take advantage of the adaptive§subframe size as well as...