Channel state information (CSI) reporting for bandwidth parts

1. An apparatus of a user equipment (UE) operable for channel state information (CSI) reporting for selected bandwidth parts, the apparatus comprising:

one or more processors configured to:

decode, at the UE, CSI reporting parameters for one or more bandwidth parts (BWPs);

calculate, at the UE, CSI for the one or more BWPs based on measurements from the one or more BWPs and the CSI reporting parameters for the one or more BWPs;

generate, at the UE, one or more CSI reports for the one or more BWPs based on measurements from the one or more BWPs and the CSI reporting parameters for the one or more BWPs; and

encode the one or more CSI reports, at the UE for transmission to a next generation node B (gNB), using the one or more BWPs; and

a memory interface configured to send to a memory the one or more CSI reports.

2. The apparatus of claim 1 , wherein the one or more processors are further configured to:

decode, at the UE, downlink control information (DCI) that includes a trigger for aperiodic CSI reporting for the one or more BWPs.

3. The apparatus of claim 2 , wherein the one or more processors are further configured to:

decode, at the UE, the DCI, wherein the DCI includes one or more explicit bits indicating the one or more BWPs for which CSI reporting is to be provided by the UE; or

decode, at the UE, the DCI, wherein the DCI indicates that a BWP of the one or more BWPs that carries the DCI is configured to calculate and report an aperiodic CSI.

4. The apparatus of claim 1 , wherein the one or more processors are further configured to:

decode, at the UE, DCI that indicates a currently active BWP of the one or more BWPs, wherein the currently active BWP is configured to provide periodic CSI reporting.

5. The apparatus of claim 1 , wherein the one or more processors are further configured to:

decode, at the UE, a radio resource control (RRC) signal that includes information indicating which of the one or more BWPs are to calculate and report a periodic CSI.

6. The apparatus of claim 1 , wherein the one or more processors are further configured to:

decode, at the UE, downlink control information (DCI) that includes a trigger for semi-persistent CSI reporting for the one or more BWPs.

7. The apparatus of claim 6 , wherein the one or more processors are further configured to:

decode, at the UE, the DCI, wherein the DCI includes one or more explicit bits indicating the one or more BWPs for which CSI reporting is to be provided by the UE; or

decode, at the UE, the DCI, wherein the DCI indicates that a BWP of the one or more BWPs that carries the DCI is configured to calculate and report a semi-persistent CSI.

8. An apparatus of a user equipment (UE) operable for channel state information (CSI) report selection, the apparatus comprising:

one or more processors configured to:

decode, at the UE, aperiodic CSI report configuration information to configure the UE to calculate CSI to generate two or more CSI reports;

decode, at the UE, downlink control information (DCI) that indicates an available payload size for CSI reporting by the UE;

determine, at the UE, a subset of the two or more CSI reports, wherein the subset of the two or more CSI reports has a maximum payload size that is less than the available payload size, wherein the subset is selected according to a predetermined rule; and

encode, at the UE for transmission to a next generation node B (gNB), the subset of the two or more CSI reports; and

a memory interface configured to send to a memory the subset of the two or more CSI reports.

9. The apparatus of claim 8 , wherein the one or more processors are further configured to:

select, at the UE, the subset of the two or more CSI reports according to the predetermined rule, wherein the predetermined rule is based on a component carrier (CC) index.

10. The apparatus of claim 8 , wherein the one or more processors are further configured to:

select, at the UE, the subset of the two or more CSI reports according to the predetermined rule, wherein the predetermined rule is based on an index of a CSI reporting setting.

11. The apparatus of claim 10 , wherein the one or more processors are further configured to:

decode, at the UE, aperiodic CSI report configuration information to configure the UE to:

determine, at the UE, one or more CSI reporting settings; and

determine, at the UE, one or more CSI resource settings.

12. The apparatus of claim 11 , wherein the one or more processors are further configured to determine the one or more CSI reporting settings, wherein each of the one or more CSI reporting settings includes one or more of:

reported CSI parameters;

codebook configuration information;

time-domain behavior of a CSI report;

frequency granularity for channel quality indicator (CQI);

precoding matrix indicator (PMI); and

measurement restrictions.

13. The apparatus of claim 11 , wherein the one or more processors are further configured to determine the one or more CSI resource settings, wherein each of the one or more CSI resource settings includes one or more of:

a configuration of one or more channel state information reference signal (CSI-RS) resource sets, wherein each CSI-RS resource set is selected from a set of configured CSI-RS resources.

14. The apparatus of claim 9 , wherein the one or more processors are further configured to:

determine the subset of the two or more CSI reports, wherein the subset of the two or more CSI reports has the maximum payload size that is less than the available payload size, wherein the subset is selected according to the predetermined rule, and the predetermined rule is based on:

a lowest CC index; or

a highest CC index.

15. The apparatus of claim 10 , wherein the one or more processors are further configured to:

determine the subset of the two or more CSI reports, wherein the subset of the two or more CSI reports has the maximum payload size that is less than the available payload size, wherein the subset is selected according to the predetermined rule, and the predetermined rule is based on:

a lowest CSI reporting setting index; or

a highest CSI reporting setting index.

16. The apparatus of claim 14 , wherein the one or more processors are further configured to:

determine the subset of the two or more CSI reports, wherein the subset of the two or more CSI reports has the maximum payload size that is less than the available payload size, wherein the subset is selected according to the predetermined rule, and the predetermined rule is based on:

a lowest CC index followed by a lowest CSI reporting setting index when the CC index is the same;

a lowest CC index followed by a highest CSI reporting setting index when the CC index is the same;

a highest CC index followed by a lowest CSI reporting setting index when the CC index is the same; or

a highest CC index followed by a highest CSI reporting setting index when the CC index is the same.

17. The apparatus of claim 15 , wherein the one or more processors are further configured to:

determine the subset of the two or more CSI reports, wherein the subset of the two or more CSI reports has the maximum payload size that is less than the available payload size, wherein the subset is selected according to the predetermined rule, and the predetermined rule is based on:

a lowest CC index followed by a lowest CSI reporting setting index when the CC index is the same;

a lowest CC index followed by a highest CSI reporting setting index when the CC index is the same;

a highest CC index followed by a lowest CSI reporting setting index when the CC index is the same; or

a highest CC index followed by a highest CSI reporting setting index when the CC index is the same.

18. At least one non-transitory machine readable storage medium having instructions embodied thereon for channel state information (CSI) reporting for selected bandwidth parts, the instructions when executed by one or more processors at a user equipment (UE) perform the following:

decoding, at the UE, CSI reporting parameters for one or more bandwidth parts (BWPs);

calculating, at the UE, CSI for the one or more BWPs based on measurements from the one or more BWPs and the CSI reporting parameters for the one or more BWPs;

generating, at the UE, one or more CSI reports for the one or more BWPs based on measurements from the one or more BWPs and the CSI reporting parameters for the one or more BWPs; and

encoding the one or more CSI reports, at the UE for transmission to a next generation node B (gNB), using the one or more BWPs.

19. The at least one non-transitory machine readable storage medium of claim 18 , further comprising instructions that when executed perform:

decoding, at the UE, downlink control information (DCI) that includes a trigger for aperiodic CSI reporting for the one or more BWPs.

20. The at least one non-transitory machine readable storage medium of claim 19 , further comprising instructions that when executed perform:

decoding, at the UE, the DCI, wherein the DCI includes one or more explicit bits indicating the one or more BWPs for which CSI reporting is to be provided by the UE; or

decoding, at the UE, the DCI, wherein the DCI indicates that a BWP of the one or more BWPs that carries the DCI is configured to calculate and report an aperiodic CSI.

21. The at least one non-transitory machine readable storage medium of claim 18 , further comprising instructions that when executed perform:

decoding, at the UE, DCI that indicates a currently active BWP of the one or more BWPs, wherein the currently active BWP is configured to provide periodic CSI reporting.

22. The at least one non-transitory machine readable storage medium of claim 18 , further comprising instructions that when executed perform:

decoding, at the UE, a radio resource control (RRC) signal that includes information indicating which of the one or more BWPs are to calculate and report a periodic CSI.

23. The at least one non-transitory machine readable storage medium of claim 18 , further comprising instructions that when executed perform:

decoding, at the UE, downlink control information (DCI) that includes a trigger for semi-persistent CSI reporting for the one or more BWPs.

24. The at least one non-transitory machine readable storage medium of claim 23 , further comprising instructions that when executed perform:

decoding, at the UE, the DCI, wherein the DCI includes one or more explicit bits indicating the one or more BWPs for which CSI reporting is to be provided by the UE; or

decoding, at the UE, the DCI, wherein the DCI indicates that a BWP of the one or more BWPs that carries the DCI is configured to calculate and report a semi-persistent CSI.