UCI SHIFT AND NEW PUSCH TIMING TO COMBAT DL-UL INTERFERENCE IN EIMTA

摘要

The effects of downlink-to-uplink interference are mitigated in TDD systems by adapting timing for uplink control information and UL HARQ retransmission. In some embodiments, uplink control information may be shifted to subframes that experience lower downlink interference from other cells. In some embodiments, UL HARQ timing is modified such that UL transmissions and retransmissions experience similar interference profiles. In embodiments, asynchronized UL HARQ may be used to schedule retransmissions in UL subframes with similar interference profiles as the original transmission (e.g., either UL-UL interference or DL-UL interference, etc.). In other embodiments, modified synchronous UL HARQ timing adapts retransmission to occur on UL subframes with similar interference profiles as the transmission based on the TDD UL-DL configuration of the serving cell and/or interfering cells.