Abstracto

Priority-Based Resource Allocation Scheme For Scalable Video Multicast In IEEE 802.16j Relay Networks

L. Mahendran , N. Mahendran

Recently, Worldwide Interoperability for Microwave Access (WiMAX) also known as IEEE 802.16 has received much attention for supporting broadband wireless access over long distance with high Quality-of- Service (QoS). The introduction of Relay Station (RS) in WiMAX is a key feature of IEEE 802.16j standard and Mobile Multihop Relay (MMR) networks based on the IEEE 802.16j standard are able to extend the coverage area as well as to provide better performance than the mobile WiMAX networks (IEEE 802.16e). However, distributing the available resources among all the users is the most common problem in WiMAX networks and its more complicated in IEEE 802.16j relay networks since, the resources should be allocated to both the Subscriber Stations (SSs), and Relay Stations. This paper, we formulated Greedy Weighted Algorithm (GWA) which calculates the priority and weighted value for every user based on the available bandwidth. The proposed algorithm can cleverly avoid redundant bandwidth allocation issue by using this priority based bandwidth allocation mechanism and thus we achieved high network performance (such as increased network throughput or maximum number of satisfied users).