Waldemar Herdt

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In this paper, a QoS-aware cross-layer scheduler for wireless LANs is introduced which allows the control of a number of data flows according to QoS requirements of the respective applications. It is based on a two-stage concept: The MAC layer scheduler uses an importance function to calculate the priority of a particular flow, whereas the PHY layer(More)
In this paper, a cross-layer scheduler for wireless LAN access points is introduced which includes a MAC and a PHY layer stage. For the MAC scheduler, both a simple round-robin scheme and an adaptive scheme which considers both the queue length and the packet lifetimes of each flow are considered. The MAC scheduler hands over a list with the most important(More)
In this paper, a QoS-aware cross-layer scheduler for wireless LANs is introduced which can handle parallelised transmissions which are provided by OFDMA or SDMA. The scheduler includes two stages: in the hardware-independent stage, data flows are selected according to their QoS requirements such as throughput and delay. In the hardware-dependent stage, the(More)
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