Patent ID: 8817755

Claim:
An apparatus, comprising: a radio frequency (RF) transceiver to receive a first message over a first carrier in a first band in a downlink sub-frame of a first radio frame in a communications link, the communications link comprising interband carriers aggregated over a primary and a secondary cell; a processor; and a reply message assignment module operable on the processor to: determine a first time division duplex uplink-downlink (UL-DL) configuration in which transmission is received; map the first UL-DL configuration to a first UL-DL group of a multiplicity of UL-DL groups, the first UL-DL group comprising a set of UL-DL configurations sharing a common uplink sub-frame set of each radio frame; and adjust timing of a reply/acknowledge message to be sent by the transceiver in response to the first message so as to coincide with a predetermined uplink sub-frame of a radio frame.