Systems and methods for feedback reporting

1. A user equipment (UE), comprising:

a processor; and

memory in electronic communication with the processor, wherein instructions stored in the memory are executable to:

decode an uplink/downlink (UL/DL) reconfiguration downlink control information (DCI) with an enhanced interference mitigation with traffic adaptation (eIMTA)-radio network temporary identifier (RNTI) on a physical downlink control channel (PDCCH);

determine if one or more valid UL/DL configurations in the UL/DL reconfiguration DCI with eIMTA-RNTI for all configured eIMTA cells are received;

determine if physical uplink control channel (PUCCH) format 3 is configured;

determine a PUCCH resource for physical downlink shared channel (PDSCH) hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ-ACK) reporting, the PUCCH resource being determined by whether valid UL/DL configurations in the UL/DL reconfiguration DCI with eIMTA-RNTI for all of the configured eIMTA cells corresponding to a subframe for the PUCCH resource are received; and

send PDSCH HARQ-ACK information on the selected PUCCH resource in an uplink subframe.

2. The UE of claim 1 , wherein if PUCCH format 3 is configured and valid UL/DL configurations in the UL/DL reconfiguration DCI with eIMTA-RNTI for all of the configured eIMTA cells corresponding to a subframe for the PUCCH resource are received, then the instructions are further executable to:

determine the PDSCH HARQ-ACK information based on at least one of a DL subframe and a special subframe according to the UL/DL configuration in the UL/DL reconfiguration DCI in a DL association set for a given UL subframe of each configured eIMTA cell.

3. The UE of claim 1 , wherein if PUCCH format 3 is configured and one or more valid UL/DL configurations in the UL/DL reconfiguration DCI with eIMTA-RNTI for at least one of the one or more configured eIMTA cells corresponding to a subframe for the PUCCH resource is not received, then the instructions are further executable to:

determine the PDSCH HARQ-ACK information based on at least one of a DL subframe and a special subframe according to a system information block type 1 (SIB1) configuration in a DL association set according to a DL HARQ reference configuration for a given UL subframe of each configured eIMTA cell, wherein the SIB1 configuration comprises a UL/DL configuration in SIB1 signaling or RadioResourceConfigCommon signaling when a configured eIMTA cell is a primary cell (PCell), and wherein the SIB1 configuration comprises a UL/DL configuration in RadioResourceConfigCommonSCell-r10 signaling when a configured eIMTA cell is a secondary cell (SCell).

4. The UE of claim 1 , wherein if PUCCH format 3 is configured and a valid UL/DL configuration in the UL/DL reconfiguration DCI with eIMTA-RNTI for at least one configured eIMTA cell corresponding to a subframe for the PUCCH resource is not received, then the instructions are further executable to:

determine the PDSCH HARQ-ACK information based on a DL association set according to a DL HARQ reference configuration for a given UL subframe of each configured eIMTA cell.

5. The UE of claim 1 , wherein if valid UL/DL configurations in the UL/DL reconfiguration DCI with eIMTA-RNTI of all configured eIMTA cells corresponding to a subframe for the PUCCH resource are received, then the instructions executable to determine the PUCCH resource comprise instructions executable to determine the PUCCH resource based on at least one of a Transmitter Power Control (TPC) field and an acknowledgment resource offset (ARO).

6. The UE of claim 5 , wherein:

if a PDSCH is detected on a secondary cell (SCell) in a DL assignment by PDCCH/enhanced physical downlink control channel (EPDCCH), or a downlink assignment index (DAI) value is greater than 1 in a detected PDCCH on a primary cell (PCell), then the instructions are further executable to:

determine a PUCCH format 3 resource based on a Transmitter Power Control (TPC) field in a PDCCH/EPDCCH assignment with a DAI value greater than 1;

if there is no PDSCH detected on an SCell and a DAI value is greater than 1 in a detected EPDCCH on a PCell, then the instructions are further executable to:

determine a PUCCH format 3 resource based on a HARQ-ACK resource offset field in a DCI format of a corresponding EPDCCH assignment with a DAI value greater than 1; and

if there is only one PDSCH detected with a DAI value of 1, excluding semi-persistent scheduling (SPS) on a PCell, then the instructions are further executable to:

determine a PUCCH format 1a/1b resource based on the number of control channel elements (CCE).

7. The UE of claim 1 , wherein if at least one valid UL/DL configuration in the UL/DL reconfiguration DCI with eIMTA-RNTI for at least one configured eIMTA cell corresponding to a subframe for the PUCCH resource is not received, then the instructions executable to determine the PUCCH resource comprise instructions executable to determine the PUCCH resource based on at least one of a predefined offset or a separate PUCCH resource.

8. The UE of claim 7 , wherein:

if a PDSCH is detected on a secondary cell (SCell) in a DL assignment by PDCCH/EPDCCH, or a downlink assignment index (DAI) value is greater than 1 in a detected PDCCH on a primary cell (PCell), then the instructions are further executable to:

determine a PUCCH format 3 resource based on a predefined offset or a separate PUCCH resource and a Transmitter Power Control (TPC) field in a PDCCH/EPDCCH assignment with a DAI value greater than 1;

if there is no PDSCH detected on an SCell and a DAI value is greater than 1 in a detected EPDCCH on a PCell, then the instructions are further executable to:

determine a PUCCH format 3 resource based on at least one of a predefined offset or a separate PUCCH resource and a HARQ-ACK resource offset field in a DCI format of a corresponding EPDCCH assignment with a DAI value greater than 1; and

if there is only one PDSCH detected with a DAI value of 1, excluding semi-persistent scheduling (SPS) on a PCell, then the instructions are further executable to:

determine a PUCCH format 1a/1b resource based on the number of control channel elements (CCE).

9. The UE of claim 1 , wherein if valid UL/DL configurations in the UL/DL reconfiguration DCI with eIMTA-RNTI for all of the configured eIMTA cells corresponding to a subframe for the PUCCH resource are received, then the instructions executable to determine the PUCCH resource further comprise instructions executable to determine the PUCCH resource based on at least one of a predefined offset or a separate PUCCH resource.

10. The UE of claim 9 , wherein:

if a PDSCH is detected on a secondary cell (SCell) in a DL assignment by PDCCH/EPDCCH, or a downlink assignment index (DAI) value is greater than 1 in a detected PDCCH on a primary cell (PCell), then the instructions are further executable to:

determine a PUCCH format 3 resource based on at least one of a predefined offset or a separate PUCCH resource and a Transmitter Power Control (TPC) field in a PDCCH/EPDCCH assignment with a DAI value greater than 1;

if there is no PDSCH detected on an SCell and a DAI value is greater than 1 in a detected EPDCCH on a PCell, then the instructions are further executable to:

determine a PUCCH format 3 resource based on at least one of a predefined offset or a separate PUCCH resource and a HARQ-ACK resource offset field in a DCI format of a corresponding EPDCCH assignment with a DAI value greater than 1; and

if there is only one PDSCH detected with a DAI value of 1, excluding semi-persistent scheduling (SPS), on a PCell, then the instructions are further executable to:

determine a PUCCH format 1a/1b resource based on the number of control channel elements (CCE).

11. The UE of claim 1 , wherein if at least one valid UL/DL configuration in the UL/DL reconfiguration DCI with eIMTA-RNTI for at least one configured eIMTA cell corresponding to a subframe for the PUCCH resource is not received, then the instructions executable to determine the PUCCH resource comprise instructions executable to determine the PUCCH resource based on at least one of a Transmitter Power Control (TPC) field and an acknowledgment resource offset (ARO).

12. The UE of claim 11 , wherein:

if a PDSCH is detected on a secondary cell (SCell) in a DL assignment by PDCCH/EPDCCH or a downlink assignment index (DAI) value is greater than 1 in a detected PDCCH on a primary cell (PCell), then the instructions are further executable to:

determine a PUCCH format 3 resource based on a Transmitter Power Control (TPC) field in a PDCCH/EPDCCH assignment with a DAI value greater than 1;

if there is no PDSCH detected on a secondary cell (SCell) and a DAI value greater than 1 in a detected EPDCCH on a PCell, then the instructions are further executable to:

determine a PUCCH format 3 resource based on a HARQ-ACK resource offset field in a DCI format of a corresponding EPDCCH assignment with a DAI value greater than 1; and

if there is only one PDSCH detected with a DAI value of 1, excluding semi-persistent scheduling (SPS), on a PCell, then the instructions are further executable to:

determine a PUCCH format 1a/1b resource based on the number of control channel elements (CCE).

13. A method performed by a user equipment (UE), comprising:

decoding an uplink/downlink (UL/DL) reconfiguration downlink control information (DCI) with an enhanced interference mitigation with traffic adaptation (eIMTA)-radio network temporary identifier (RNTI) on a physical downlink control channel (PDCCH);

determining if one or more valid UL/DL configurations in the UL/DL reconfiguration DCI with eIMTA-RNTI for all configured eIMTA cells are received;

determining if physical uplink control channel (PUCCH) format 3 is configured;

determining a PUCCH resource for physical downlink shared channel (PDSCH) hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ-ACK) reporting, the PUCCH resource being determined by whether valid UL/DL configurations in the UL/DL reconfiguration DCI with eIMTA-RNTI for all of the configured eIMTA cells corresponding to a subframe for the PUCCH resource are received; and

sending PDSCH HARQ-ACK information on the selected PUCCH resource in an uplink subframe.

14. The method of claim 13 , wherein if PUCCH format 3 is configured and one or more valid UL/DL configurations in the UL/DL reconfiguration DCI with eIMTA-RNTI for at least one of the one or more configured eIMTA cells corresponding to a subframe for the PUCCH resource is not received, then the method further comprises:

determining the PDSCH HARQ-ACK information based on at least one of a DL subframe and a special subframe according to a system information block type 1 (SIB1) configuration in a DL association set according to a DL HARQ reference configuration for a given UL subframe of each configured eIMTA cell, wherein the SIB1 configuration comprises a UL/DL configuration in SIB1 signaling or RadioResourceConfigCommon signaling when a configured eIMTA cell is a primary cell (PCell), and wherein the SIB1 configuration comprises a UL/DL configuration in RadioResourceConfigCommonSCell-r10 signaling when a configured eIMTA cell is a secondary cell (SCell).

15. The method of claim 13 , wherein if PUCCH format 3 is configured and a valid UL/DL configuration in the UL/DL reconfiguration DCI with eIMTA-RNTI for at least one configured eIMTA cell corresponding to a subframe for the PUCCH resource is not received, then the method further comprises:

determining the PDSCH HARQ-ACK information based on a DL association set according to a DL HARQ reference configuration for a given UL subframe of each configured eIMTA cell.

16. The method of claim 13 , wherein if valid UL/DL configurations in the UL/DL reconfiguration DCI with eIMTA-RNTI of all configured eIMTA cells corresponding to a subframe for the PUCCH resource are received, then determining the PUCCH resource comprises determining the PUCCH resource based on at least one of a Transmitter Power Control (TPC) field and an acknowledgment resource offset (ARO).

17. The method of claim 16 , wherein:

if a PDSCH is detected on a secondary cell (SCell) in a DL assignment by PDCCH/enhanced physical downlink control channel (EPDCCH), or a downlink assignment index (DAI) value is greater than 1 in a detected PDCCH on a primary cell (PCell), then the method further comprises:

determining a PUCCH format 3 resource based on a Transmitter Power Control (TPC) field in a PDCCH/EPDCCH assignment with a DAI value greater than 1;

if there is no PDSCH detected on an SCell and a DAI value is greater than 1 in a detected EPDCCH on a PCell, then the method further comprises:

determining a PUCCH format 3 resource based on a HARQ-ACK resource offset field in a DCI format of a corresponding EPDCCH assignment with a DAI value greater than 1; and

if there is only one PDSCH detected with a DAI value of 1, excluding semi-persistent scheduling (SPS) on a PCell, then the method further comprises:

determining a PUCCH format 1a/1b resource based on the number of control channel elements (CCE).

18. The method of claim 13 , wherein if at least one valid UL/DL configuration in the UL/DL reconfiguration DCI with eIMTA-RNTI for at least one configured eIMTA cell corresponding to a subframe for the PUCCH resource is not received, then determining the PUCCH resource comprises determining the PUCCH resource based on at least one of a predefined offset or a separate PUCCH resource.

19. The method of claim 18 , wherein:

if a PDSCH is detected on a secondary cell (SCell) in a DL assignment by PDCCH/EPDCCH, or a downlink assignment index (DAI) value is greater than 1 in a detected PDCCH on a primary cell (PCell), then the method further comprises:

determining a PUCCH format 3 resource based on a predefined offset or a separate PUCCH resource and a Transmitter Power Control (TPC) field in a PDCCH/EPDCCH assignment with a DAI value greater than 1;

if there is no PDSCH detected on an SCell and a DAI value is greater than 1 in a detected EPDCCH on a PCell, then the method further comprises:

determining a PUCCH format 3 resource based on at least one of a predefined offset or a separate PUCCH resource and a HARQ-ACK resource offset field in a DCI format of a corresponding EPDCCH assignment with a DAI value greater than 1; and

if there is only one PDSCH detected with a DAI value of 1, excluding semi-persistent scheduling (SPS) on a PCell, then the method further comprises:

determining a PUCCH format 1a/1b resource based on the number of control channel elements (CCE).