Blind detection and CCE allocation for carrier aggregation

1. A method of wireless communication of a user equipment (UE), comprising:

determining N1 component carriers on each of which the UE is configured to detect a respective one physical down link control channel (PDCCH) in a slot, N1 being a positive integer;

determining N2 component carriers on each of which the UE is configured to detect respective at least two PDCCHs in the slot, N2 being a positive integer;

determining a total Q blind detections of PDCCH that the UE is capable of performing, Q being a positive integer;

determining a first predetermined scaling factor X, X being a positive number;

allocating M1 blind detections of the Q blind detections to be available on each of the N1 component carriers and M2 blind detections of the Q blind detections to be available on each of the N2 component carriers such that (N1*M1+N2*M2) is a largest integer no greater than Q, M1 being a positive integer, M2 being a positive integer and equal to X*M1; and

performing blind detections in accordance with the allocations.

2. The method of claim 1 , wherein the respective one PDCCH on each of the N1 component carriers is to be received from a first transmission and reception point (TRP), wherein the respective at least two PDCCHs are to be received from the first TRP and a second TRP.

3. The method of claim 1 , further comprising:

sending an indication indicating a capability of the UE for performing the blind detections.

4. The method of claim 1 , further comprising:

sending an indication indicating a maximum number of component carriers configurable at the UE for supporting reception of at least two PDCCHs in a slot.

5. The method of claim 1 , further comprising:

sending an indication indicating a maximum number of active bandwidth parts across the N1 component carriers and the N2 component carriers and configurable at the UE for supporting reception of multiple PDCCHs in a slot.

6. The method of claim 1 , further comprising:

receiving one or more configurations indicating that the UE is expected to receive one PDCCH on each of the N1 component carriers in a slot and to receive at least two PDCCHs on each of the N2 component carriers in a slot.

7. The method of claim 6 , wherein the one or more configurations includes a respective non-physical layer configuration for each of the N1 component carriers and the N2 component carriers.

8. The method of claim 1 , further comprising:

receiving one or more configurations indicating that the UE is expected to receive one PDCCH per slot in a first bandwidth part and is expected to receive at least two PDCCHs per slot in a second bandwidth part, wherein the first bandwidth part and the second bandwidth part are within a component carrier, and

determining that the component carrier is belonging to the N1 component carriers when the first bandwidth part is activated or that the component carrier is belonging to the N2 component carriers when the second bandwidth part is activated.

9. The method of claim 1 , wherein the first predetermined scaling factor is 2.

10. The method of claim 1 , further comprising:

receiving a configuration indicating the first predetermined scaling factor.

11. The method of claim 1 , further comprising:

determining a total P Control-Channel Elements (CCEs) for PDCCH monitoring allocated on the N1 component carriers and the N2 component carriers, P being a positive integer;

determining a second predetermined scaling factor Y, Y being a positive number;

determining C1 CCEs allocated on each of the N1 component carriers and C2 CCEs allocated on each of the N2 component carriers such that (N1*C1+N2*M2) is a largest integer no greater than P, C1 being a positive integer, C2 being a positive integer and equal to Y*C1, wherein PDCCH monitoring is performed on the respective C1 CCEs on each of the N1 component carriers and the respective C2 CCEs on each of the N2 component carriers.

12. The method of claim 11 , wherein the second predetermined scaling factor is 2.

13. The method of claim 11 , further comprising:

receiving a configuration indicating the second predetermined scaling factor.

14. An apparatus for wireless communication, the apparatus being a user equipment (UE), comprising:

a memory; and

at least one processor coupled to the memory and configured to:

determine N1 component carriers on each of which the UE is configured to detect a respective one physical down link control channel (PDCCH) in a slot, N1 being a positive integer;

determine N2 component carriers on each of which the UE is configured to detect respective at least two PDCCHs in the slot, N2 being a positive integer;

determine a total Q blind detections of PDCCH that the UE is capable of performing, Q being a positive integer;

determine a first predetermined scaling factor X, X being a positive number;

allocate M1 blind detections of the Q blind detections to be available on each of the N1 component carriers and M2 blind detections of the Q blind detections to be available on each of the N2 component carriers such that (N1*M1+N2*M2) is a largest integer no greater than Q, M1 being a positive integer, M2 being a positive integer and equal to X*M1; and

perform blind detections in accordance with the allocations.

15. The apparatus of claim 14 , wherein the respective one PDCCH on each of the N1 component carriers is to be received from a first transmission and reception point (TRP), wherein the respective at least two PDCCHs are to be received from the first TRP and a second TRP.

16. The apparatus of claim 14 , wherein the at least one processor is further configured to:

send an indication indicating a capability of the UE for performing the blind detections.

17. The apparatus of claim 14 , wherein the at least one processor is further configured to:

send an indication indicating a maximum number of component carriers configurable at the UE for supporting reception of at least two PDCCHs in a slot.

18. The apparatus of claim 14 , wherein the at least one processor is further configured to:

send an indication indicating a maximum number of active bandwidth parts across the N1 component carriers and the N2 component carriers and configurable at the UE for supporting reception of multiple PDCCHs in a slot.

19. The apparatus of claim 14 , wherein the at least one processor is further configured to:

receive one or more configurations indicating that the UE is expected to receive one PDCCH on each of the N1 component carriers in a slot and to receive at least two PDCCHs on each of the N2 component carriers in a slot.

20. A computer-readable medium storing computer executable code for wireless communication of a user equipment (UE), comprising code to:

determine N1 component carriers on each of which the UE is configured to detect a respective one physical down link control channel (PDCCH) in a slot, N1 being a positive integer;

determine N2 component carriers on each of which the UE is configured to detect respective at least two PDCCHs in the slot, N2 being a positive integer;

determine a total Q blind detections of PDCCH that the UE is capable of performing, Q being a positive integer;

determine a first predetermined scaling factor X, X being a positive number;

allocate M1 blind detections of the Q blind detections to be available on each of the N1 component carriers and M2 blind detections of the Q blind detections to be available on each of the N2 component carriers such that (N1*M1+N2*M2) is a largest integer no greater than Q, M1 being a positive integer, M2 being a positive integer and equal to X*M1; and

perform blind detections in accordance with the allocations.