Abstract
Supporting quality of service (QoS) guarantees for diverse multimedia services are the primary concerns for WiMAX (IEEE 802.16) networks. A scheduling scheme that satisfies QoS requirements has become more important for wireless communications. We propose a downlink scheduling scheme called adaptive priority-based downlink scheduling (APDS) for providing QoS guarantees in IEEE 802.16 networks. APDS comprises two major components: Priority assignment and resource allocation. Different service-type connections primarily depend on their QoS requirements to adjust priority assignments and dispatch bandwidth resources dynamically. We consider both starvation avoidance and resource management. Simulation results show that our APDS methodology outperforms the representative scheduling approaches in QoS satisfaction and maintains fairness in starvation prevention.
Original language | English |
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Pages (from-to) | 692-702 |
Number of pages | 11 |
Journal | Journal of Communications and Networks |
Volume | 14 |
Issue number | 6 |
DOIs | |
Publication status | Published - Dec 2012 |
Externally published | Yes |
Keywords
- IEEE 802.16
- Quality of service (QoS)
- Resource management
- WiMAX
ASJC Scopus subject areas
- Information Systems
- Computer Networks and Communications