On Selfish Distributed Access Selection Algorithms in IEEE 802.11 Networks
2006 (English)In: IEEE VTS VEH TECHNOL CONF, 2006, 1097-1102 p.Conference paper (Refereed)
An important question for future wireless networks is whether the prioritization between different accesses should be controlled by the networks or terminals. Herein we evaluate the performance of distributed access-selection algorithms where terminals are responsible for both AP selection and the necessary measurements. In particular, we focus on determining whether selfish distributed algorithms call perform as well as centralized ones (for comparison we include max-sum, max-min, proportional fair and minimum delay allocations). The study is conducted by time-dynamic simulations in a IEEE 802.11a network and its performance measures we use file transfer delay and supportable load at a maximum tolerable delay. Our results show that selfish algorithms can offer similar performance. both in terms of throughput and fairness, as the centralized schemes as long as they account for both path-loss and access point load. This is an important result and it suggests that terminal-controlled algorithms are Just as efficient as centralized schemes, which besides extensive measurements also require that AP exchange information, for improving the efficiency in WLAN networks. Compared with a minimum path-loss selection criteria, which is standard in the IEEE 802.11 family today, our distributed load-aware algorithm increases the maximum supportable load with more than 200 percent even after accounting for measurement time and estimation errors. With fast reselection during ongoing sessions the gains call be further increased with, typically, 20 percent.
Place, publisher, year, edition, pages
2006. 1097-1102 p.
, IEEE VTS Vehicular Technology Conference Proceedings, ISSN 1090-3038
Algorithms, Delay circuits, Distributed computer systems, Error analysis, Information retrieval systems, Motion planning
IdentifiersURN: urn:nbn:se:kth:diva-26000DOI: 10.1109/VTCF.2006.236ISI: 000260569400222ScopusID: 2-s2.0-34548861524ISBN: 978-1-4244-0062-1OAI: oai:DiVA.org:kth-26000DiVA: diva2:361257
64th IEEE Vehicular Technology Conference Montreal, CANADA, SEP 25-28, 2006
QC 201011082010-11-082010-11-082011-10-10Bibliographically approved