Achieving scalable performance in large-scale IEEE 802.11 wireless networks
Refereed conference paper presented and published in conference proceedings


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AbstractIn large-scale wireless networks, interferences among nodes limit channel spatial re-use and are a main hurdle for scalable performance. There are two types of interferences: 1) physical interferences due to the receiver's inability to decode a signal when the powers received from other signals are large; and 2) protocol interferences imposed by the specific multi-access protocol being used. This paper models interference types 1 and 2 in terms of a set of inequality constraints for the IEEE 802.11 CSMA/CA protocol. Based on the inequalities, we investigate the impact of the parameters basic-rate, data-rate, and physical preamble-rate. on channel spatial re-use. Regardless of the parameter settings, the total capacity in an 802.11 network reaches a ceiling as the number of node n increases. We identify the fundamental causes for the non-scalable performance, and show that 802.11 can be made to be scalable with a simple modification, achieving O(n) throughput without adaptive power control. We believe that this is the first paper that has demonstrated this.
All Author(s) ListNg PC, Liew SC, Jiang LB
Name of ConferenceIEEE Wireless Communications and Networking Conference
Start Date of Conference13/03/2005
End Date of Conference17/03/2005
Place of ConferenceNew Orleans
Country/Region of ConferenceUnited States of America
Detailed descriptioned. by Ping Chung Ng, Soung Chang Liew, and Li Bin Jiang.
Year2005
Month1
Day1
PublisherIEEE
Pages69 - 74
ISBN0-7803-8966-2
ISSN1525-3511
LanguagesEnglish-United Kingdom
Keywordsad hoc networks; analysis; capacity; IEEE 802.11; performance; scalable performance; wireless networks
Web of Science Subject CategoriesTelecommunications

Last updated on 2020-03-07 at 03:56