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

Author

Könsgen, Andreas ; Herdt, Waldemar ; Wang, Hongyou ; Timm-Giel, Andreas ; Görg, Carmelita

Author_Institution

Univ. of Bremen, Bremen

fYear

2007

fDate

3-7 Sept. 2007

Firstpage

1

Lastpage

5

Abstract

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.

Keywords

MIMO communication; access protocols; quality of service; telecommunication network management; time division multiple access; wireless LAN; MAC layer scheduler; MIMO-TDMA transmission; PHY layer scheduler; QoS-aware cross-layer scheduler; data flows; enhanced cross-layer two-stage scheduler; importance function; time-critical applications; wireless LAN; Channel capacity; Delay; Land mobile radio; Local area networks; Mobile communication; Physical layer; Processor scheduling; Protocols; Throughput; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on

Conference_Location

Athens

Print_ISBN

978-1-4244-1144-3

Electronic_ISBN

978-1-4244-1144-3

Type

conf

DOI

10.1109/PIMRC.2007.4394577

Filename

4394577