QoS Support in MANETs: A Modular Architecture Based on the IEEE 802.11e Technology

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Providing Quality-of-Service (QoS) in wireless ad hoc networks is an intrinsically complex task due to node mobility, distributed channel access, and fading radio signal effects. This goal can be successfully accomplished only through the cooperation of the different protocol layers involved. In this paper the authors propose a novel QoS architecture that is able to support applications with the bandwidth, delay, and jitter requirements in MANET environments. The proposed architecture is modular, allowing the plugging in of different protocols, which offers great flexibility. Despite its modularity, the authors propose optimizations based on interactions between the Media Access Control (MAC), routing, and admission control layers which offer important performance improvements.