Auto tuning self-optimization algorithm for mobility management in LTE-A and 5g hetnets

Abdulraqeb Alhammadi, Mardeni Roslee*, Mohamad Yusoff Alias, Ibraheem Shayea, Saddam Alraih, Khalid Sheikhidris Mohamed

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)

Abstract

Ultra-dense networks represent the trend for future wireless 5G networks, which can provide high transmission rates in dense urban environments. However, a massive number of small cells are required to be deployed in such networks, and this requirement increases interference and number of handovers (HOs) in heterogeneous networks (HetNets). In such scenario, mobility management becomes an important issue to guarantee seamless communication while the user moves among cells. In this paper, we propose an auto-Tuning optimization (ATO) algorithm that utilizes user speed and received signal reference power to adapt HO margin and time to trigger. The proposed algorithm aims to reduce the number of frequent HOs and HO failure (HOF) ratio. The performance of the proposed algorithm is evaluated through simulation with a two-Tier model that consists of 4G and 5G networks. Simulation results show that the average rates of ping-pong HOs and HOF are significantly reduced by the proposed algorithm compared with other algorithms from the literature. In addition, the ATO algorithm achieves a low call drop rate and reduces HO delay and interruption time during user mobility in HetNets.

Original languageEnglish
Article number8937526
Pages (from-to)294-304
Number of pages11
JournalIEEE Access
Volume8
DOIs
Publication statusPublished - 2020

Bibliographical note

Publisher Copyright:
© 2013 IEEE.

Keywords

  • handover
  • heterogeneous networks
  • self-optimization
  • Ultra-dense

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