Region-based division duplex in heterogeneous networks

Abstract

A novel duplex scheme, region-based division duplex (RDD), is proposed to address the cross-tier interference issue in heterogeneous networks. The proposed RDD leverages the location of the user to select the link direction of a small cell between the forward and reverse duplex modes. Moreover, a coordinated scheduling algorithm is developed where pairing between macro and small cells and the duplex mode of each small cell is jointly decided. Simulation results show that the proposed RDD achieves an approximately 40% gain in network sum capacity compared with conventional TDD-based duplex schemes.

Keywords

• Heterogeneous network
• Region-based division duplex
• Capacity maximization
• Coordinated scheduling