Clustering-Based Resource Allocation Scheme for Dense Femtocells (CRADF) to Improve the Performance of User Elements

Abstract

Femtocells are densely deployed in the next generation heterogeneous cellular networks (HetNet) to improve the user performance and capacity of the cellular system. In LTE-A HetNet, multiple femto base stations (F-eNBs) sharing the spectrum with macro base station (M-eNB), create interference environment. This can be controlled by effective resource allocation scheme. In this paper, the clustering-based resource allocation scheme for dense femtocells (CRADF) is proposed to allocate suitable channels for user elements (UEs) at the dense femtocells. Most of the existing resource allocation schemes effectively assign the channels to femtocell users and mitigate the interference between the small cells and do not consider the interference from the macrocell elements. The proposed clustering-based resource allocation scheme effectively assigns the channels to UEs of both macro and femto cells in the dense LTE-A HetNet. The UE performance of the dense femtocell is analyzed for varying UE density conditions. The interference among the UEs from the macro and femtocell is quantified using graph-based technique and subsequently, the CRADF technique is used to assign the suitable channels to UE. The experimental results showed that our proposed work improved the average throughput of UE and restricted the subband handoff in the dense femtocells environment.

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Correspondence to S. Shibu.

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Shibu, S., Saminadan, V. Clustering-Based Resource Allocation Scheme for Dense Femtocells (CRADF) to Improve the Performance of User Elements. Wireless Pers Commun 113, 1183–1200 (2020). https://doi.org/10.1007/s11277-020-07273-7

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Keywords

  • Channel allocation
  • Femtocell
  • Clustering
  • HetNet
  • LTE-A