An Enhanced Cross-Layer Two-Stage Scheduler for Wireless LANs

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 p...

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Bibliographic Details
Main Authors: Konsgen, A., Herdt, W., Hongyou Wang, Timm-Giel, A., Gorg, C.
Format: Conference Proceeding
Language:English
Subjects:
Channel capacity
Delay
Land mobile radio
Local area networks
Mobile communication
Physical layer
Processor scheduling
Protocols
Throughput
Wireless LAN
Online Access:Request full text
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Summary: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 scheduler considers the channel conditions of a MIMO-TDMA transmission. It is shown that with the concept presented here, throughput and delay requirements of time-critical applications can be met.
ISSN:2166-9570
DOI:10.1109/PIMRC.2007.4394577