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QoS provisioning is an important issue for deploying broadband wireless access networks with real-time and non-realtime traffic integration. Opportunistic MAC (OMAC) protocol combines cross-layer design and opportunistic scheduling scheme to achieve high utilization while providing QoS supports to various applications. In this paper, we propose a cross-layer MAC protocol and scheduling framework with...
In order for the base station to respond quickly and efficiently to the uplink bandwidth request in broadband wireless access (BWA) networks using time-division duplex (TDD), a dual feedback control algorithm has recently been proposed. In this algorithm the bandwidth request is adjusted in accordance with both the length of the backlogged queue and the mismatch between packet arrival and service...
In this paper we propose a novel model for the capacity analysis on the reservation-based random multiple access system, which can be applied to the medium access control protocol of the emerging WiMax technology. In such a wireless broadband access system, in order to support QoS, the channel time is divided into consecutive frames, where each frame consists of some consequent mini-slots for the...
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