TY - GEN

T1 - Voice-Centric LTE Femtocells and Improper Graph Colorings

A1 - Garcia,Luis Guilherme Uzeda

A1 - Pedersen,Klaus

A1 - Mogensen,Preben

AU - Garcia,Luis Guilherme Uzeda

AU - Pedersen,Klaus

AU - Mogensen,Preben

PB - IEEE Press

PY - 2012/4

Y1 - 2012/4

N2 - 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.

AB - 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.

U2 - 10.1109/VETECS.2012.6240302

DO - 10.1109/VETECS.2012.6240302

SN - 978-1-4673-0989-9

BT - 2012 IEEE 75th Vehicular Technology Conference (VTC Spring)

T2 - 2012 IEEE 75th Vehicular Technology Conference (VTC Spring)

T3 - I E E E V T S Vehicular Technology Conference. Proceedings

T3 - en_GB

SP - 1

EP - 5

ER -