DocumentCode :
3197892
Title :
Understanding 802.11e Voice Behaviour via Testbed Measurements and Modeling
Author :
Dangerfield, Ian ; Malone, David ; Leith, Douglas J.
Author_Institution :
Hamilton Inst., Nat. Univ. of Ireland, Maynooth
fYear :
2007
fDate :
16-20 April 2007
Firstpage :
1
Lastpage :
6
Abstract :
Analytic modeling and simulation of 802.11 and 802.11e have flagged up a number of potential performance problems with voice in an infrastructure mode network. This body of work has also predicted a number of possible solutions, such as the use of TXOP. In this paper we reproduce a number of these problems in a 802.11 testbed, and demonstrate that analytic models usefully bound performance. We study the impact of buffer size, which is difficult to fully capture in analytic models. We observe an asymmetry in buffer requirements between stations and the access point and explore how buffering and the use of TXOP impact throughput and delay of voice.
Keywords :
access protocols; wireless LAN; 802.11e voice behaviour; TXOP; buffer requirements; infrastructure mode network; testbed measurements; Analytical models; Delay; Hardware; Linux; Media Access Protocol; Multiaccess communication; Performance analysis; Performance evaluation; Testing; Throughput; 802.11e; CSMA/CA; buffering; measurement; test-bed; voice;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks and Workshops, 2007. WiOpt 2007. 5th International Symposium on
Conference_Location :
Limassol
Print_ISBN :
978-1-4244-0960-0
Electronic_ISBN :
978-1-4244-0961-7
Type :
conf
DOI :
10.1109/WIOPT.2007.4480108
Filename :
4480108
Link To Document :
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