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Optimizing utilization in cellular radio networks using mobility data
Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
Telenor Sverige AB, SWE.
Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
2018 (English)In: Optimization and Engineering, ISSN 1389-4420, E-ISSN 1573-2924, p. 1-28Article in journal (Refereed) Epub ahead of print
Abstract [en]

The main resource for any telecom operator is the physical radio cell network. We present two related methods for optimizing utilization in radio networks: Tetris optimization and selective cell expansion. Tetris optimization tries to find the mix of users from different market segments that provides the most even load in the network. Selective cell expansion identifies hotspot cells, expands the capacity of these radio cells, and calculates how many subscribers the radio network can handle after the expansions. Both methods are based on linear programming and use mobility data, i.e., data defining where different categories of subscribers tend to be during different times of the week. Based on real-world mobility data from a region in Sweden, we show that Tetris optimization based on six user segments made it possible to increase the number of subscribers by 58% without upgrading the physical infrastructure. The same data show that by selectively expanding less than 6% of the cells we are able to increase the number of subscribers by more than a factor of three without overloading the network. We also investigate the best way to combine Tetris optimization and selective cell expansion. © 2018 The Author(s)

Place, publisher, year, edition, pages
Springer New York LLC , 2018. p. 1-28
Keywords [en]
Cellular radio network, Linear programming, Mobility data, Optimization, Cytology, Radio, Cell expansion, Cellular radio networks, Hot-spot cells, Market segment, Mobility datum, Number of subscribers, Radio networks, Telecom operators, Cells
National Category
Computer Sciences
Identifiers
URN: urn:nbn:se:bth-16334DOI: 10.1007/s11081-018-9387-4Scopus ID: 2-s2.0-85047379164OAI: oai:DiVA.org:bth-16334DiVA, id: diva2:1214629
Available from: 2018-06-07 Created: 2018-06-07 Last updated: 2018-06-07Bibliographically approved

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Sidorova, YuliaLundberg, Lars

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