Dynamic partial path-loss compensation-based power control technique in lte-a femtocell networks

Research output: Contribution to journalArticle

Abstract

With the femtocells being overlaid onto the macrocell in two-tier architecture, that comprises a mixture of both planned and arbitrary deployed nodes. This increases the data rate for indoor environment and fulfils the dream of high speed wireless and mobile broadband services. However, this potential for significant data rate growth could severely be diminished by cross and co-tier interference problem especially in a dense femtocell deployment scenario. In this paper, a dynamic power control scheme is proposed to mitigate the downlink interference in order to reduce the outage probability of macro user equipment (MUE), while maintaining good QoS for the home user equipment (HUE). The femtocell adjusts the transmit power, which subject to HUE measurements. The minimum level of transmit power is constrained to the target Signal to Interference and Noise Ratio (SINR) of the HUE that satisfy the required Quality of Service (QoS) of the HUE. The system level simulations confirm that, the proposed power control scheme reduces the outage probability of the nearby MUEs up to 23%, compared to fixed power setting, while maintaining the spectral efficiency of the HUEs. Furthermore, the transmit power can be reduced by 50%, which leads to effective power solution for the interference scenario.

Original languageEnglish
Pages (from-to)303-312
Number of pages10
JournalJournal of Theoretical and Applied Information Technology
Volume83
Issue number2
Publication statusPublished - 20 Jan 2016

Fingerprint

Femtocell
Path Loss
Power Control
Power control
Partial
Interference
Outage Probability
Outages
Quality of Service
Quality of service
Scenarios
Spectral Efficiency
Dynamic Control
Broadband
Macros
High Speed
Compensation and Redress
Target
Arbitrary
Vertex of a graph

Keywords

  • Co/cross-tier interference
  • Femtocells
  • Heterogeneous network
  • Macrocells
  • Power control

ASJC Scopus subject areas

  • Computer Science(all)
  • Theoretical Computer Science

Cite this

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title = "Dynamic partial path-loss compensation-based power control technique in lte-a femtocell networks",
abstract = "With the femtocells being overlaid onto the macrocell in two-tier architecture, that comprises a mixture of both planned and arbitrary deployed nodes. This increases the data rate for indoor environment and fulfils the dream of high speed wireless and mobile broadband services. However, this potential for significant data rate growth could severely be diminished by cross and co-tier interference problem especially in a dense femtocell deployment scenario. In this paper, a dynamic power control scheme is proposed to mitigate the downlink interference in order to reduce the outage probability of macro user equipment (MUE), while maintaining good QoS for the home user equipment (HUE). The femtocell adjusts the transmit power, which subject to HUE measurements. The minimum level of transmit power is constrained to the target Signal to Interference and Noise Ratio (SINR) of the HUE that satisfy the required Quality of Service (QoS) of the HUE. The system level simulations confirm that, the proposed power control scheme reduces the outage probability of the nearby MUEs up to 23{\%}, compared to fixed power setting, while maintaining the spectral efficiency of the HUEs. Furthermore, the transmit power can be reduced by 50{\%}, which leads to effective power solution for the interference scenario.",
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AB - With the femtocells being overlaid onto the macrocell in two-tier architecture, that comprises a mixture of both planned and arbitrary deployed nodes. This increases the data rate for indoor environment and fulfils the dream of high speed wireless and mobile broadband services. However, this potential for significant data rate growth could severely be diminished by cross and co-tier interference problem especially in a dense femtocell deployment scenario. In this paper, a dynamic power control scheme is proposed to mitigate the downlink interference in order to reduce the outage probability of macro user equipment (MUE), while maintaining good QoS for the home user equipment (HUE). The femtocell adjusts the transmit power, which subject to HUE measurements. The minimum level of transmit power is constrained to the target Signal to Interference and Noise Ratio (SINR) of the HUE that satisfy the required Quality of Service (QoS) of the HUE. The system level simulations confirm that, the proposed power control scheme reduces the outage probability of the nearby MUEs up to 23%, compared to fixed power setting, while maintaining the spectral efficiency of the HUEs. Furthermore, the transmit power can be reduced by 50%, which leads to effective power solution for the interference scenario.

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