A method of wireless communication of an evolved Node B (eNB) comprising: informing at least one user equipment (UE) of a change in at least one of: a first configuration of one or more subframes to be used for transmission of acknowledgments (ACKs)/negative acknowledgements (NACKs) by the at least one UE for downlink (DL) transmissions received by the at least one UE, or a second configuration of one or more subframes to be used for reception of ACKs/NACKs by the at least one UE for uplink (UL) transmissions sent by the at least one UE, wherein the DL-UL transmission configuration is unchanged, and wherein the informing is through a radio resource control (RRC) configuration message; and indicating to the at least one UE one or more subframes in which the at least one UE is to transmit the ACKs/NACKs for the received DL transmissions or is to receive the ACKs/NACKs for sent UL transmissions, wherein the one or more subframes to be used for transmission of ACKs/NACKs are later than one or more subframes previously scheduled for transmission of ACKs/NACKs, or wherein the one or more subframes to be used for reception of ACKs/NACKs are later than one or more subframes previously scheduled for reception of ACKs/NACKs, and wherein the indication comprises at least one of a first set of resources that are to be used by the at least one UE when transmitting the ACKs/NACKs for the received DL transmissions or a second set of resources that are to be used by the at least one UE when receiving the ACKs/NACKs for the sent UL transmissions. informing at least one user equipment (UE) of a change in at least one of: a first configuration of one or more subframes to be used for transmission of acknowledgments (ACKs)/negative acknowledgements (NACKs) by the at least one UE for downlink (DL) transmissions received by the at least one UE, or a second configuration of one or more subframes to be used for reception of ACKs/NACKs by the at least one UE for uplink (UL) transmissions sent by the at least one UE, wherein the DL-UL transmission configuration is unchanged, and wherein the informing is through a radio resource control (RRC) configuration message; and a first configuration of one or more subframes to be used for transmission of acknowledgments (ACKs)/negative acknowledgements (NACKs) by the at least one UE for downlink (DL) transmissions received by the at least one UE, or a second configuration of one or more subframes to be used for reception of ACKs/NACKs by the at least one UE for uplink (UL) transmissions sent by the at least one UE, wherein the DL-UL transmission configuration is unchanged, and wherein the informing is through a radio resource control (RRC) configuration message; and indicating to the at least one UE one or more subframes in which the at least one UE is to transmit the ACKs/NACKs for the received DL transmissions or is to receive the ACKs/NACKs for sent UL transmissions, wherein the one or more subframes to be used for transmission of ACKs/NACKs are later than one or more subframes previously scheduled for transmission of ACKs/NACKs, or wherein the one or more subframes to be used for reception of ACKs/NACKs are later than one or more subframes previously scheduled for reception of ACKs/NACKs, and wherein the indication comprises at least one of a first set of resources that are to be used by the at least one UE when transmitting the ACKs/NACKs for the received DL transmissions or a second set of resources that are to be used by the at least one UE when receiving the ACKs/NACKs for the sent UL transmissions. <EOS>