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Optimizing Power and User Association for Energy Saving in Load-Coupled Cooperative LTE
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, Faculty of Science & Engineering. University of Maryland, MD 20740 USA.
2016 (English)In: 2016 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC), IEEE , 2016Conference paper, Published paper (Refereed)
Abstract [en]

We consider an energy minimization problem for cooperative LTE networks. To reduce energy consumption, we investigate how to jointly optimize the transmit power and the association between cells and user equipments (UEs), by taking into consideration joint transmission (JT), one of the coordinated multipoint (CoMP) techniques. We formulate the optimization problem mathematically. For solving the problem, a dynamic power allocation algorithm that adjusts the transmit power of all cells, and an algorithm for optimizing the cell-UE association, are proposed. The two algorithms are iteratively used in an algorithmic framework to enhance the energy performance. Numerically, the proposed algorithms can lead to lower energy consumption than the optimal energy setting in the non-JT case. In comparison to fixed power allocation in JT, the proposed dynamic power allocation algorithm is able to significantly reduce the energy consumption.

Place, publisher, year, edition, pages
IEEE , 2016.
Series
IEEE International Conference on Communications, ISSN 1550-3607
Keyword [en]
energy minimization; power allocation; user association; joint transmission; load coupling
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:liu:diva-134232DOI: 10.1109/ICC.2016.7511525ISI: 000390993205049ISBN: 978-1-4799-6664-6 (print)OAI: oai:DiVA.org:liu-134232DiVA: diva2:1069752
Conference
IEEE International Conference on Communications (ICC)
Available from: 2017-01-30 Created: 2017-01-29 Last updated: 2017-01-30

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf