Dynamic Frequency Reuse in Dense Cellular Networks

Bart Post, Sem Borst, Hans van den Berg

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

Abstract

Network densification has emerged as a powerful paradigm to boost spectral efficiency and accommodate the continual rise in demand for wireless capacity. In dense cell deployments however, overlapping coverage areas may cause highly varying interference conditions among different cells. Moreover, denser networks experience more temporal load fluctuations due to daily and hourly changing usage patterns. The currently applied universal reuse frequency allocation is not suitable to deal with these issues, and needs to be tailored to dense cell deployments to ensure adequate performance in such scenarios. In this paper we present a dynamic, load aware and self-adapting frequency allocation scheme designed for dense cellular networks: the DyCRA scheme (Dynamic Cost/Reward based Allocation). The scheme makes decisions based on cost-reward trade-offs: rewards arise in the form of capacity, and costs arise in the form of interference (under spatial reuse). We quantify these costs and rewards based on SINR, and use periodic load estimates to determine if access points are in need of extra frequencies, or can spare them, and the cost/reward structure is used to determine which frequencies are allocated or released. Extensive simulation results show that the DyCRA scheme provides efficient resource allocations that adapt to changing traffic conditions and yields significant performance gains in scenarios with nonstationary traffic demands.

Original languageEnglish
Title of host publicationProceedings - 17th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2019
EditorsFrancesco de Pelligrini, Francesco de Pelligrini, Walid Saad, Chee Wei Tan
Place of PublicationPiscataway, NJ
PublisherIEEE
ISBN (Electronic)978-3-903176-20-1
ISBN (Print)978-1-7281-3085-9
DOIs
Publication statusPublished - Jun 2019
Externally publishedYes
Event17th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2019 - Avignon, France
Duration: 3 Jun 20197 Jun 2019
Conference number: 17

Conference

Conference17th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2019
Abbreviated titleWiOpt
CountryFrance
CityAvignon
Period3/06/197/06/19

Keywords

  • Dense cellular networks
  • Dynamic load balancing
  • Frequency allocation
  • Self-organizing

Fingerprint Dive into the research topics of 'Dynamic Frequency Reuse in Dense Cellular Networks'. Together they form a unique fingerprint.

Cite this