Evolving Coverage Optimisation Functions for Heterogeneous Networks Using Grammatical Genetic Programming

Heterogeneous Cellular Networks are multi-tiered cellular networks comprised of Macro Cells and Small Cells in which all cells occupy the same bandwidth. User Equipments greedily attach to whichever cell provides the best signal strength. While Macro Cells are invariant, the power and selection bias...

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Bibliographic Details
Published inApplications of Evolutionary Computation pp. 219 - 234
Main Authors Fenton, Michael, Lynch, David, Kucera, Stepan, Claussen, Holger, O’Neill, Michael
Format Book Chapter
LanguageEnglish
Published Cham Springer International Publishing 2016
SeriesLecture Notes in Computer Science
Subjects
Coverage Optimisation
Grammatical Evolution
Macro Cell
Symbolic Regression
User Equipment
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ISBN3319312030
9783319312033
ISSN0302-9743
1611-3349
DOI10.1007/978-3-319-31204-0_15

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Summary:Heterogeneous Cellular Networks are multi-tiered cellular networks comprised of Macro Cells and Small Cells in which all cells occupy the same bandwidth. User Equipments greedily attach to whichever cell provides the best signal strength. While Macro Cells are invariant, the power and selection bias for each Small Cell can be increased or decreased (subject to pre-defined limits) such that more or fewer UEs attach to that cell. Setting optimal power and selection bias levels for Small Cells is key for good network performance. The application of Genetic Programming techniques has been proven to produce good results in the control of Heterogenous Networks. Expanding on previous works, this paper uses grammatical GP to evolve distributed control functions for Small Cells in order to vary their power and bias settings. The objective of these control functions is to evolve control functions that maximise a proportional fair utility of UE throughputs.
ISBN:3319312030
9783319312033
ISSN:0302-9743
1611-3349
DOI:10.1007/978-3-319-31204-0_15