In small cell deployments, it is expected that the number of UE devices per small cell will not be large, and the traffic pattern in each small cell will change widely over time depending on user applications. As a result, spectrum sharing between the uplink (UL) and the downlink (DL), so-called dynamic time-division duplex (TDD) , would provide gains in terms of spectrum efficiency compared to the semi-static partition of UL and DL. Study on dynamic TDD is already underway in Release 11. However, when small cells are densely deployed, interference issues such as UL-to-DL or DL-to-UL interference, as shown in Fig. 4a, become more important. Therefore, interference coordination and management schemes for dense small cells especially for dynamic TDD need to be established in LTE-B.