Adaptive Localized Resource Allocation with Access Point Coordination in Cellular Networks

This paper proposes an adaptive fractional frequency reuse (FFR) resource allocation scheme for downlink transmission of OFDMA cellular networks. Resource allocation is localized in the sense that in each region system resources are assigned based on local traffic demand. Furthermore, the allocated resources in each region adapt to changes in the environment (i.e. channel gains and number/mobility of active terminals). To this end, a multi-stage proportional fair scheduler is introduced. The performance of the proposed scheme is compared with a variation of the well-known FFR technique. Numerical results studying the average and cell edge spectral efficiencies show promising improvements.