DocumentCode :
3279762
Title :
Sniff and Embark Protocol for QoS Enhancement in Wireless LANs
Author :
Dhananjay, Aditya ; Das, Debabrata
Author_Institution :
Int. Inst. of Inf. Technol., Bangalore
fYear :
2006
fDate :
9-11 Oct. 2006
Firstpage :
361
Lastpage :
366
Abstract :
The IEEE 802.11e standard defines the enhanced distributed coordination function (EDCF) to improve the quality of service (QoS) in a wireless local area network (WLAN). The EDCF is a CSMA/CA based protocol, where stations compete for the medium with prioritized contention parameters. Also defined in the 802.11e standard is the polling mode of the hybrid coordination function (HCF - polling), which is a centralized QoS mechanism. The primary purpose of the 802.11e HCF is to decrease the average queuing delay. The EDCF fails to scale well at high loads due to increase in collisions, while the HCF polling compromises on throughput to achieve lower delay and has the disadvantage of being centrally controlled. In this paper, we propose an adaptive sniffing based protocol (sniff and embark protocol) that works around the deficiencies of the IEEE 802.11e standard. The simulations show that sniff and embark protocol outperforms the EDCF in terms of providing higher throughput and lower average delay.
Keywords :
IEEE standards; carrier sense multiple access; quality of service; queueing theory; wireless LAN; CSMA-CA; IEEE 802.11e standard; QoS enhancement; adaptive sniffing based protocol; average queuing delay; enhanced distributed coordination function; hybrid coordination function; quality of service; wireless LAN; wireless local area network; Ad hoc networks; Centralized control; Communication system traffic control; Delay; Media Access Protocol; Quality of service; Throughput; Traffic control; Wireless LAN; Wireless application protocol;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computer Communications and Networks, 2006. ICCCN 2006. Proceedings.15th International Conference on
Conference_Location :
Arlington, VA
ISSN :
1095-2055
Print_ISBN :
1-4244-0572-6
Type :
conf
DOI :
10.1109/ICCCN.2006.286302
Filename :
4067683
Link To Document :
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