Adaptive Smart Power Control Algorithm for LTE downlink cross-tier interference avoidance

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

4 Scopus citations

Abstract

In the deployment of heterogeneous Long Term Evolution (LTE), due to the unmanaged power range of femtocells, inter-cell interference problems cause severe degradation in network performance, particularly in Closed Subscriber Group (CSG) mode. In the paper, we proposed an effective approach termed Adaptive Smart Power Control Algorithm (ASPCA), which can be applied to cluster users in coverage hole and to tackle cross-tier interference issues by determining an appropriate serving range for femtocells without requiring neither standard changing nor complicated negotiation among cells. In simulation model, several frequency-reuse-based schemes have been investigated. As a result, we demonstrate that compared to conventional way, the ASPCA significantly improved the macrocell performance about 51.32% in average user throughput but less affected the femtocell performance around 8.63% reduction in average user throughput and caused a negligible 0.46% overall loss in average throughput. The ASPCA also provided well conditions for frequency-reuse-based schemes of Inter-Cell Interference Coordination (ICIC), such as Soft Frequency Reuse (SFR) and Fractional Frequency Reuse (FFR), which can be integrated to provide the most benefit for cellular networks.

Original languageEnglish
Title of host publicationProceedings of the 11th EAI International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QSHINE 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages24-30
Number of pages7
ISBN (Electronic)9781631900631
DOIs
StatePublished - 19 Nov 2015
Event11th EAI International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QSHINE 2015 - Taipei, Taiwan
Duration: 19 Aug 201520 Aug 2015

Publication series

NameProceedings of the 11th EAI International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QSHINE 2015

Conference

Conference11th EAI International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QSHINE 2015
Country/TerritoryTaiwan
CityTaipei
Period19/08/1520/08/15

Keywords

  • CSG
  • femtocell
  • ICIC
  • interference
  • LTE
  • macrocell

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