An End-to-End QoS Aware Greedy Distributed Scheduling Framework for WiMAX Mesh Networks

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Executive Summary

In this paper, the authors propose a greedy framework for distributed scheduling in the IEEE 802.16 MeSH mode, which uses a novel "End-to-end QoS aware bandwidth Reservation Protocol" (EQRP) to provide end-to-end QoS guarantee to intra-mesh flows. The proposed framework provides an efficient and integrated solution to QoS aware routing and call admission control in distributed WiMAX mesh networks. The framework does not rely on any special node for resource management which makes it more scalable and robust to node failures. To save expensive control overheads, EQRP learns from previous bandwidth reservation failures to maintain a rank list of next hops for every destination and uses the "Greedy Forwarding" algorithm to do bandwidth reservation using slot information from only two hop neighbor routers'.

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