HARQ timelines for TDD-FDD carrier aggregation

摘要

Disclosed embodiments include an end-to-end UE and eNB HARQ protocol design for various TDD-FDD joint operation wireless network configurations. Designs for timing of HARQ feedback in response to PDSCH and PUSCH transmissions (or simply, PDSCH and PUSCH) include both HARQ feedback from a UE, and HARQ feedback from an eNB. The PUSCH HARQ timeline embodiments also include both self-scheduling and cross-carrier scheduling scenarios for PUSCH transmissions. In addition, designs for the cross-carrier scheduling scenarios contemplate an FDD scheduling cell or a TDD scheduling cell.

主权项

1. A user equipment (UE) configured for cross-carrier scheduled carrier aggregation, the UE comprising:
circuitry configured to:
decode a physical hybrid automatic repeat request (HARQ) indicator channel (PHICH) or a physical downlink control channel (PDCCH) in a scheduling cell to obtain information for scheduling physical uplink shared channels (PUSCHs), the PUSCHs including a first PUSCH in the scheduling cell and a second PUSCH in a scheduled cell, the scheduling cell having a first duplex mode, the scheduled cell having a second duplex mode that is different from the first duplex mode;detect from the PHICH, a first HARQ in response to the first PUSCH, in which the first HARQ is detected according to a first predefined HARQ timing corresponding to the first duplex mode; anddetect from the PHICH, a second HARQ in response to the second PUSCH, in which the second HARQ is detected according to a second predefined HARQ timing corresponding to the first duplex mode or the second duplex mode, in which, in response to the UE receiving during a subframe index value of n a PDCCH or a PHICH associated with the scheduled cell, the second PUSCH is configured to be transmitted during a subframe index value of n+k, where k≧4 and where k is based on a preconfigured time division duplex (TDD) configuration type.