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Generalizing FFR by Flexible Sub-Band Allocation in OFDMA Networks with Irregular Cell Layout
Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska högskolan.
Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska högskolan.
2010 (Engelska)Ingår i: IEEE Wireless Communications and Networking Conference Workshops (WCNCW), 2010, IEEE , 2010Konferensbidrag, Publicerat paper (Refereegranskat)
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.

Ort, förlag, år, upplaga, sidor
IEEE , 2010.
Nationell ämneskategori
Teknik och teknologier
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URN: urn:nbn:se:liu:diva-89602DOI: 10.1109/WCNCW.2010.5487661ISBN: 978-1-4244-6405-0 (tryckt)ISBN: e-978-1-4244-6406-7 OAI: oai:DiVA.org:liu-89602DiVA, id: diva2:608459
Konferens
IEEE Wireless Communications and Networking Conference (WCNCW 2010), 18 April 2010, Sydney, NSW, Australia
Tillgänglig från: 2013-02-27 Skapad: 2013-02-27 Senast uppdaterad: 2013-09-20

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Chen, LeiYuan, Di

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Totalt: 111 träffar
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