Investigation of Open-Loop Transmit Power Control Parameters for Homogeneous and Heterogeneous Small-Cell Uplinks:

Amir Haider, Rashmi Sharan Sinha, Seung Hoon Hwang

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

In Long Term Evolution (LTE) cellular networks, the transmit power control (TPC) mechanism consists of two parts: the open loop (OL) and closed loop. Most cellular networks consider OL/TPC because of its simple implementation and low operation cost. The analysis of OL/TPC parameters is essential for efficient resource management from the cellular operator's viewpoint. In this work, the impact of the OL/TPC parameters is investigated for homogeneous small cells and heterogeneous small-cell/macrocell network environments. A mathematical model is derived to compute the transmit power at the user equipment, the received power at the eNodeB, the interference in the network, and the received signal-to-interference ratio. Using the analytical platform, the effects of the OL/TPC parameters on the system performance in LTE networks are investigated. Numerical results show that, in order to achieve the best performance, it is appropriate to choose αsmall = 1 and Po-small = -100 dBm in a homogenous small-cell network. Further, the selections of αsmall = 1 and Po-small = -100 dBm in the small cells and αmacro = 0.8 and Po-macro = -100 dBm in the macrocells seem to be suitable for heterogeneous network deployment.

Original languageEnglish
Pages (from-to)51-60
Number of pages10
JournalETRI Journal
Volume40
Issue number1
DOIs
StatePublished - 1 Feb 2018

Keywords

  • 5G
  • HetNet
  • Interference
  • Open-loop power control
  • Small cell

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