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Published in:
2013 | OriginalPaper | Chapter
Conservative Graph Coloring: A Robust Method for Automatic PCI Assignment in LTE
Authors : Lukasz Chrost, Krzysztof Grochla
Published in: Computer Networks
Publisher: Springer Berlin Heidelberg
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The article presents a new approach in the field of automatic Physical Cell Id (PCI) assignment in LTE-advanced Self Organized Networks. The presented algorithm allows for multi-target optimization for different network deployment scenarios in order to minimize the number of PCI conflicts and confusions. Unlike some other competitive algorithms, the presented mechanism does not require any changes in the LTE specification, as the operation is based on standard information already available in the management system. The algorithm allows for specific limitations of the physical layer, e.g. setting the maximum number of co-existing PCIs in range in order to restrain interference. The presented algorithm is compared with other solutions through numerous simulations.