Voice-Centric LTE Femtocells and Improper Graph Colorings

Luis Guilherme Uzeda Garcia, Klaus Pedersen, Preben Mogensen

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Abstrakt

This paper addresses carrier-based inter-cell interference coordination (CB-ICIC) among LTE femtocells operating on a single carrier. CB-ICIC is in many ways linked to the widely investigated dynamic channel assignment problem, which is often studied in the context of graph coloring. The investigation revolves around the sensible definition of the underlying graph, i.e. the network model, rather than focusing on the coloring algorithms and their properties. Ultimately, we posit that improper online graph-coloring suffices and is actually preferable. In short, settling for less-than-optimal configurations avoids uncontrolled service interruptions. Such disruptions tend to raise understandable concerns when it comes to fully autonomous selection of operational CCs. Our results dispel such concerns by showing that conservative methods can achieve most of the benefits of unrestricted off-line coloring algorithms with a very modest number (2-3) of CCs to choose from.
OriginalsprogEngelsk
Titel2012 IEEE 75th Vehicular Technology Conference (VTC Spring)
Antal sider5
ForlagIEEE Press
Publikationsdatoapr. 2012
Sider1-5
ISBN (Trykt)978-1-4673-0989-9
ISBN (Elektronisk)978-1-4673-0988-2
DOI
StatusUdgivet - apr. 2012
Begivenhed2012 IEEE 75th Vehicular Technology Conference - Yokohama, Japan
Varighed: 6 maj 20129 maj 2012

Konference

Konference2012 IEEE 75th Vehicular Technology Conference
LandJapan
ByYokohama
Periode06/05/201209/05/2012
NavnI E E E V T S Vehicular Technology Conference. Proceedings
ISSN1550-2252

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