Channel-Access-Aware User Association With Interference Coordination in Two-Tier Downlink Cellular Networks

The diverse transmit power levels of base stations (BSs) in a multitier cellular network, on the one hand, lead to an uneven distribution of traffic loads among different BSs when received signal power (RSP)-based user association is used. This causes underutilization of resources at low-power BSs. On the other hand, strong interference from high-power BSs affects downlink transmissions to the use...