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Generalized Roaming and Access Selection in Multi-Operator Environments
KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
2005 (English)Conference paper, Published paper (Refereed)
Abstract [en]

In a multi-operator environment where several operators offer high-speed local wireless access, geographical sharing is an attractive way to increase the coverage and resource effificiency so that 'interesting' services can be offered. This paper investigates two different access selection strategies for three typical environments (hotspot, urban, and suburban) to establish when, and to what extent, the performance can be improved. In the first strategy users simply connect to the strongest access point (AP) whereas the users within the second strategy connect to the AP maximizing the instantaneous aggregated capacity according a greedy algorithm. Both strategies are compared to a reference case where users connect to the strongest AP belonging to their home operator.  We investigated a two-operator scenario with APs using CSMA/CA and the results indicate that a significant improvement, both in terms of coverage and resource efficiency, can be achieved if users simply connect to the strongest AP. Moreover the results show that further improvement is possible, especially in urban and hotspot environments, with more complex strategies.

Place, publisher, year, edition, pages
2005.
National Category
Computer and Information Science
Research subject
SRA - ICT
Identifiers
URN: urn:nbn:se:kth:diva-28160OAI: oai:DiVA.org:kth-28160DiVA: diva2:384198
Conference
RadioVetenskap och Kommunikation (RVK)
Note
QC 20110114Available from: 2011-01-07 Created: 2011-01-07 Last updated: 2011-01-14Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • ieee
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Language
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  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
  • text
  • asciidoc
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