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Accurate optimization models for interference constrained bandwidth allocation in cellular networks
INFORM GmbH, Germany.
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, Faculty of Science & Engineering. Uppsala Univ, Sweden.
Rhein Westfal TH Aachen, Germany.
Rhein Westfal TH Aachen, Germany.
2019 (English)In: Computers & Operations Research, ISSN 0305-0548, E-ISSN 1873-765X, Vol. 101Article in journal (Refereed) Published
Abstract [en]

In cellular networks, the signal-to-interference-plus-noise ratio (SINR) is a key metric for link availability and quality. For network planning purposes, a straightforward modeling unfortunately yields numerically difficult optimization models. Further, given a required data rate of a link, its bandwidth consumption depends nonlinearly on the SINR. In this paper, we develop two novel approaches to jointly model SINR-based link availability and bandwidth requirements accurately. The first approach is a set-wise formulation from a users point of view, while the second one exploits discrete channel quality indicators. We compare these formulations with three known approximate approaches numerically, revealing the clear outperformance of our approaches in terms of exactness. Moreover, since the exact models comprise an exponential number of either variables or constraints, we discuss their pros and cons in a further computational study and develop a more efficient algorithm dealing implicitly with the involved constraints. (C) 2018 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD , 2019. Vol. 101
Keywords [en]
Network optimization; Interference modeling; Mixed integer programming
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:liu:diva-152795DOI: 10.1016/j.cor.2018.08.011ISI: 000449311100001OAI: oai:DiVA.org:liu-152795DiVA, id: diva2:1265305
Note

Funding Agencies|Deutsche Forschungsgemeinschaft [KO2311/3-1, SCHM2643/5-1]; H2020 European Research Council MSCA project DECADE [645705]

Available from: 2018-11-22 Created: 2018-11-22 Last updated: 2018-12-17

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The full text will be freely available from 2021-08-22 11:09
Available from 2021-08-22 11:09

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
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  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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