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Generalizing FFR by Flexible Sub-Band Allocation in OFDMA Networks with Irregular Cell Layout
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
2010 (English)In: IEEE Wireless Communications and Networking Conference Workshops (WCNCW), 2010, IEEE , 2010Conference paper, Published paper (Refereed)
Abstract [en]

Fractional Frequency Reuse (FFR) is one of the key concepts for enhancing cell-edge performance of OFDMA networks. Standard FFR allows one sub-band to be allocated for each cell. This limits the performance improvement of cell edge users, especially those bandwidth-sensitive users. With flexible sub-band allocation, cell edge can be allocated more than one sub-band, thereby performance can be improved largely. Furthermore, previous work on FFR has focused on networks of relatively small size and with standard hexagon- shaped cells.For real-life networks with a very irregular cell layout, these results are inadequate. In this paper, we present the idea of Flexible FFR (FFR-F) which allows more than one sub-band to be allocated to cell edges. Meanwhile, an optimization algorithm based on local search is present for FFR-F planning in large-scale networks with irregular cell layout. Sub-band allocation scheme which maximizes the cell-edge throughput can be found time efficiently. Results from networks with realistic radio propagation conditions show that FFR-F enables significant throughput improvement at cell edges. These results along with the analysis demonstrate the potential benefits of FFR-F and the proposed approach for planning of real-life OFDMA networks.

Place, publisher, year, edition, pages
IEEE , 2010.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-89602DOI: 10.1109/WCNCW.2010.5487661ISBN: 978-1-4244-6405-0 (print)ISBN: e-978-1-4244-6406-7 OAI: oai:DiVA.org:liu-89602DiVA: diva2:608459
Conference
IEEE Wireless Communications and Networking Conference (WCNCW 2010), 18 April 2010, Sydney, NSW, Australia
Available from: 2013-02-27 Created: 2013-02-27 Last updated: 2013-09-20

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Chen, LeiYuan, Di

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf