Problems for Existing Approaches Scenarios of suboptimal solutions ●For the user 1M 1M -overly crowded basestations 。For the carrier -low utilization of femto-cells overload of marco-cells femto B 日，+司1三13卡三分Q0 4/1Problems for Existing Approaches Scenarios of suboptimal solutions • For the user - overly crowded basestations • For the carrier - low utilization of femto-cells - overload of marco-cells femto A femto B 1M 1 M 1M 1M 1 M Cannot connect to BS A due to resource constraints 1M Associate to macro-cell 1M 1M 4/1