Joint load-driven frequency allocation and user association in dense cellular networks

Bart Post, Sem Borst

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Fuelled by the proliferation of smartphones, wireless traffic has experienced huge growth, which will continue and exacerbate the capacity strain in cellular networks. Network densification has emerged as a powerful paradigm to boost spectral efficiency and accommodate the continual rise in demand for wireless capacity. These dense networks also make resource allocation more challenging though, as they result in more irregular cells with possibly overlapping coverage areas and greater variability in traffic loads. To deal with these load imbalances, there are typically two methods to dynamically match capacity and demand: "bring users to capacity" (user association) and "bring capacity to the users" (frequency/spectrum allocation). In this paper we study the joint operation of load-aware dynamic user association and frequency allocation algorithms in dense cellular networks. Motivated by a joint load-balancing optimization problem, we consider load-aware algorithms that operate using load measurements at the access points (APs) and can react to changing load conditions without knowledge of difficult-to-obtain system parameters like arrival patterns of users. We present extensive simulation results for various parameter settings, allowing for the user association and frequency allocation algorithms to operate on different time scales. The simulation results show that the joint operation of these algorithms leads to excellent performance without the need to provide an initialized and optimized frequency allocation.

Original languageEnglish
Title of host publicationProceedings of the 31st International Teletraffic Congress, ITC 2019
EditorsRavi R. Mazumdar, Gyorgy Dan
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages75-83
Number of pages9
ISBN (Electronic)978-0-9883045-7-4
DOIs
Publication statusPublished - 1 Aug 2019
Event31st International Teletraffic Congress, ITC 2019 - Budapest, Hungary
Duration: 27 Aug 201929 Aug 2019

Conference

Conference31st International Teletraffic Congress, ITC 2019
CountryHungary
CityBudapest
Period27/08/1929/08/19

Keywords

  • dense cellular networks
  • dynamic load balancing
  • Frequency allocation
  • user association

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  • Cite this

    Post, B., & Borst, S. (2019). Joint load-driven frequency allocation and user association in dense cellular networks. In R. R. Mazumdar, & G. Dan (Eds.), Proceedings of the 31st International Teletraffic Congress, ITC 2019 (pp. 75-83). [8879455] Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ITC31.2019.00019