Time division duplex (tdd) uplink downlink (ul-dl) reconfiguration

An apparatus of an evolved node B (eNB) operable to transmit a Time Division Duplex (TDD) uplink-downlink (UL-DL) reconfiguration in a heterogeneous network (HetNet), the apparatus comprising one or more processors and memory configured to:

• receive, from a user equipment (UE), a UE capability report that indicates the UE supports a TDD UL-DL reconfiguration functionality;
• transmit, to the UE, a configuration to enable TDD UL-DL reconfiguration at the UE;
• and
• transmit, to the UE, a TDD UL-DL reconfiguration signal in a downlink control information (DCI) message, wherein the UE is configured to update a TDD UL-DL configuration of the UE based on the TDD UL-DL reconfiguration signal transmitted on a physical downlink control channel (PDCCH) in preconfigured downlink or special (DL/S) subframes by the eNB.

An apparatus of a user equipment (UE) operable to implement a Time Division Duplex (TDD) uplink-downlink (UL-DL) reconfiguration in a heterogeneous network (HetNet), the apparatus comprising one or more processors and memory configured to:

• indicate a capability of supporting a TDD UL-DL reconfiguration functionality to an evolved node B (eNB) via UE capability reporting;
• receive a configuration to enable TDD UL-DL reconfiguration at the UE;
• receive a TDD UL-DL reconfiguration signal from the eNB in a downlink control information (DCI) message, wherein the TDD UL-DL reconfiguration signal is received according to a defined periodicity;
• and
• update a TDD UL-DL configuration of the UE based on the TDD UL-DL reconfiguration signal transmitted on a physical downlink control channel (PDCCH) in preconfigured downlink or special (DL/S) subframes by the eNB.