DocumentCode :
3358391
Title :
A Cross-Layer Two-Stage Scheduler for Wireless LANs
Author :
Könsgen, Andreas ; Herdt, Waldemar ; Timm-Giel, Andreas ; Görg, Carmelita
Author_Institution :
Bremen Univ., Bremen
fYear :
2007
fDate :
1-5 July 2007
Firstpage :
1
Lastpage :
5
Abstract :
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 packets to the PHY scheduler, which selects one or more packets according to the channel capacity available for the respective destination stations. It is shown that the combination of the MAC and the PHY layer scheduler increases the throughput while the delay is reduced. Fairness is supported in the way that the performance is enhanced not only for the entire system, but also for the individual flows.
Keywords :
access protocols; scheduling; wireless LAN; MAC scheduler; PHY scheduler; access points; adaptive scheme; cross-layer two-stage scheduler; packet lifetime; queue length; round-robin scheme; wireless LAN; Bit rate; Channel capacity; Communication networks; Computers; Data encapsulation; Physical layer; Processor scheduling; Protocols; Quality of service; Wireless LAN;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Mobile and Wireless Communications Summit, 2007. 16th IST
Conference_Location :
Budapest
Print_ISBN :
963-8111-66-6
Electronic_ISBN :
963-8111-66-6
Type :
conf
DOI :
10.1109/ISTMWC.2007.4299080
Filename :
4299080
Link To Document :
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