DocumentCode :
2760599
Title :
A New Cross-Layer Designed Multipolling Mac Protocol Over WLANs
Author :
Sun, Fanglei ; Li, Victor O K ; Diao, Zhifeng ; Xu, Zhengyuan
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Hong Kong
fYear :
2007
fDate :
11-15 March 2007
Firstpage :
304
Lastpage :
309
Abstract :
This paper develops a multipolling MAC protocol which exploits cross-layer information to support delay-sensitive multimedia services over WLANs. A user detection module and a multi-rate adaptation module are proposed in the physical layer to assist in link differentiation. With these two modules, our new multi-polling MAC protocol, named PALD-MPMP not only reduces the polling overhead, but also provides an effective polling scheduler by allocating transmission priorities to users according to their delay requirements or levels and channel gains. Simulation results show that our proposed protocol outperforms the standard point coordination function (PCF) for delay-sensitive services. All the performance improvements are mainly contributed by the awareness of cross-layer channel state information, and the consequent multi-rate adaptation schemes.
Keywords :
access protocols; multimedia communication; wireless LAN; WLAN; channel state information; cross-layer design; cross-layer information; delay-sensitive services; multimedia services; multipolling MAC protocol; user detection module; wireless LAN; Access protocols; Bandwidth; Communications Society; Delay effects; Design engineering; Media Access Protocol; Physical layer; Sun; USA Councils; Wireless LAN;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
ISSN :
1525-3511
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
Type :
conf
DOI :
10.1109/WCNC.2007.62
Filename :
4224307
Link To Document :
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