Inter-cell interference coordination method based on coordinated inter-cell interference power control in uplink

Kenichi Higuchi, Yoshiko Saito, Seigo Nakao

Research output: Contribution to journalArticle

Abstract

We propose an inter-cell interference coordination (ICIC) method that employs inter-cell coordinated transmission power control (TPC) based on inter-cell interference power in addition to conventional received signal power-based TPC in the cellular uplink. We assume orthogonal multiple-access as is used in 3GPP LTE. In the proposed method, an ICIC effect similar to that for conventional fractional frequency reuse (FFR) is obtained. This is achieved by coordinating the allowable intercell interference power level at the appropriate frequency blocks within the system bandwidth among neighboring cells in a semi-static manner. Different from conventional FFR, since all users within a cell can access all the frequency blocks, the reduction in multiuser diversity gain is abated. Computer simulation results show that the proposed method enhances both the cell-edge and average user throughput simultaneously compared to conventional universal frequency reuse (UFR) and FFR.

Original languageEnglish
Pages (from-to)1357-1362
Number of pages6
JournalIEICE Transactions on Communications
VolumeE98B
Issue number7
DOIs
Publication statusPublished - 1 Jul 2015

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Keywords

  • Cellular system
  • Fractional frequency reuse
  • Inter-cell interference coordination
  • Power control
  • Uplink

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