A Proposal for an Enhanced Inter-Cell Interference Coordination Scheme with Cell Range Expansion in LTE-A Heterogeneous Networks
Affiliation: University of Technology, Sydney, AU
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Affiliation: University of Technology, Sydney, AU
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Chapter from the book: Sandrasegaran, K. 2013. Advances in Real-time Information Networks.
In heterogeneous network, the
interference situations
may be changed in different
locations because of nodes with
different powers as well as
traffic loads. The Inter-Cell
Interference
(ICI) problem can occur for both
data and control channels. To
mitigate ICI problem, enhanced
Inter-Cell Interference
Coordination (eICIC) techniques
are proposed in the Long Term
Evolution-Advanced (LTE-A)
networks particularly picocells.
Moreover, the coverage areas of
picocell are usually narrow
because of difference between
transmission power of macro
eNodeB (eNB) and pico eNB.
Therefore, traffic load is
distributed
unequally which can lead to
macrocells overloading. To address
the coverage problems resulted by
nodes with different powers,
Cell Range expansion (CRE)
technique has been recently
proposed. In this paper, the CRE
approach is combined with
eICIC-time domain scheme to
improve system performance using
features of both two techniques.