A cross-layer two-stage scheduler for wireless LANs

Publikationstyp
Conference Paper
Publikationsdatum
2007-07
Sprache
English
Author
Konsgen, Andreas 
Herdt, Waldemar 
Timm-Giel, Andreas orcid-logo
Görg, Carmelita 
TORE-URI
http://hdl.handle.net/11420/12215
Start Page
1
End Page
5
Article Number
4299080
Citation
16th IST Mobile and Wireless Communications Summit: 4299080, 1-5 (2007-12-01)
Contribution to Conference
16th IST Mobile and Wireless Communications Summit, 2007 
Publisher DOI
10.1109/ISTMWC.2007.4299080
Scopus ID
2-s2.0-50249137715
Publisher
IEEE
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.
DDC Class
004: Informatik