Bandwidth part (BWP) operations for multi-cell scheduling

1 . An apparatus for wireless communication at a user equipment (UE), comprising:

one or more memories comprising instructions; and

one or more processors configured, individually or in any combination, to execute the instructions and cause the apparatus to:

receive, from a network entity, a first downlink control information (DCI) indicating resources are allocated for at least one data channel on multiple carriers, wherein the first DCI comprises a joint bandwidth part (BWP) indication field for the multiple carriers for activating at least one BWP configuration on each carrier of the multiple carriers; and

communicate with the network entity in accordance with the first DCI as based on the at least one BWP configuration.

2 . The apparatus of claim 1 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to receive a configuration for multi-carrier data scheduling, wherein the first DCI has a first DCI format configured for multi-carrier data channel scheduling in accordance with the configuration for the multi-carrier data scheduling.

3 . The apparatus of claim 1 , wherein the at least one BWP configuration comprises:

at least one first BWP configuration for a first carrier of the multiple carriers; and

at least one second BWP configuration for a second carrier of the multiple carriers.

4 . The apparatus of claim 3 , wherein the first DCI comprises:

a first BWP indication field indicating at least one first BWP configuration to be activated for the first carrier; and

a second BWP indication field indicating at least one second BWP configuration to be activated for the second carrier.

5 . The apparatus of claim 4 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to:

interpret one or more fields of the first DCI for the first carrier based on the at least one first BWP configuration to be activated for the first carrier; and

interpret one or more fields of the first DCI for the second carrier based on the at least one second BWP configuration to be activated for the second carrier.

6 . The apparatus of claim 3 , wherein the first DCI comprises a BWP indication field indicating:

the at least one first BWP configuration to be activated for the first carrier; and

the at least one second BWP configuration to be activated for the second carrier.

7 . The apparatus of claim 6 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to:

interpret one or more fields of the first DCI for the first carrier based on the at least one first BWP configuration to be activated for the first carrier; and

interpret one or more fields of the first DCI for the second carrier based on the at least one second BWP configuration to be activated for the second carrier.

8 . The apparatus of claim 1 , wherein the first DCI comprises a first DCI format configured for multi-carrier data channel scheduling, and wherein the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to:

receive a second DCI having an indication of a null-BWP for a carrier of the multiple carriers;

interpret the second DCI based on a second DCI format configured for single-carrier data channel scheduling; and

communicate with the network entity based on the second DCI as interpreted based on the second DCI format.

9 . The apparatus of claim 8 , wherein the indication of the null-BWP is via a BWP indication field of the second DCI.

10 . The apparatus of claim 8 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to:

receive a third DCI on another carrier of the multiple carriers, the third DCI having an indication of a non-null-BWP for the carrier of the multiple carriers;

interpret the third DCI based on the first DCI format configured for multi-carrier data channel scheduling; and

communicate with the network entity based on the third DCI as interpreted based on the first DCI format.

11 . The apparatus of claim 1 , wherein the at least one BWP configuration comprises a single BWP configuration for a first carrier of the multiple carriers and for a second carrier of the multiple carriers.

12 . The apparatus of claim 11 , wherein the first DCI comprises a BWP indication field indicating the BWP configuration to be activated on the first carrier and the second carrier.

13 . The apparatus of claim 12 , wherein the BWP configuration indicates a BWP that spans across the first carrier and the second carrier, and wherein the first DCI is interpreted based on the BWP.

14 . The apparatus of claim 12 , wherein:

the DCI comprises a first DCI format configured for multi-carrier data channel scheduling;

the BWP configuration indicates a BWP on only the first carrier; and

the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to monitor the first carrier for a second DCI in response to the BWP configuration, the second DCI having a second DCI format configured for single-carrier data channel scheduling.

15 . The apparatus of claim 14 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to receive the second DCI indicating a BWP that spans across the first carrier and the second carrier, and monitor the first carrier and the second carrier for a third DCI, the third DCI having the first DCI format configured for multi-carrier data channel scheduling.

16 . An apparatus for wireless communication at a network entity, comprising:

one or more memories comprising instructions; and

one or more processors configured, individually or in any combination, to execute the instructions and cause the apparatus to:

generate a first downlink control information (DCI) indicating resources are allocated for at least one data channel on multiple carriers, wherein the first DCI comprises a joint bandwidth part (BWP) indication field for the multiple carriers for activating at least one BWP configuration on each carrier of the multiple carriers, the first DCI being generated based on the at least one BWP configuration to be activated;

transmit the first DCI to a user equipment (UE); and

communicate with the UE in accordance with the first DCI.

17 . The apparatus of claim 16 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to transmit a configuration for multi-carrier data scheduling, wherein the first DCI has a first DCI format configured for multi-carrier data channel scheduling in accordance with the configuration for the multi-carrier data scheduling.

18 . The apparatus of claim 16 , wherein the at least one BWP configuration comprises:

at least one first BWP configuration for a first carrier of the multiple carriers; and

at least one second BWP configuration for a second carrier of the multiple carriers.

19 . The apparatus of claim 18 , wherein the first DCI comprises:

a first BWP indication field indicating the at least one first BWP configuration to be activated for the first carrier; and

a second BWP indication field indicating the at least one second BWP configuration to be activated for the second carrier.

20 . The apparatus of claim 19 , wherein:

one or more fields of the first DCI for the first carrier are generated based on the at least one first BWP configuration to be activated for the first carrier; and

one or more fields of the first DCI for the second carrier are generated based on the at least one second BWP configuration to be activated for the second carrier.

21 . The apparatus of claim 18 , wherein the first DCI comprises a BWP indication field indicating:

the at least one first BWP configuration to be activated for the first carrier; and

the at least one second BWP configuration to be activated for the second carrier.

22 . The apparatus of claim 21 , wherein:

one or more fields of the first DCI for the first carrier are generated based on the at least one first BWP configuration to be activated for the first carrier; and

one or more fields of the first DCI for the second carrier are generated based on the at least one second BWP configuration to be activated for the second carrier.

23 . The apparatus of claim 16 , wherein the first DCI comprises a first DCI format configured for multi-carrier data channel scheduling, and wherein the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to:

generate a second DCI having an indication of a null-BWP for a carrier of the multiple carriers, the second DCI being generated based on a second DCI format configured for single-carrier data channel scheduling;

transmit the second DCI to the UE; and

communicate with the UE based on the second DCI.

24 . The apparatus of claim 23 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to:

generate a third DCI on another carrier of the multiple carriers, the third DCI having an indication of a non-null-BWP for the carrier of the multiple carriers, the third DCI being generated based on the first DCI format configured for multi-carrier data channel scheduling;

transmit the third DCI to the UE; and

communicate with the UE based on the third DCI.

25 . The apparatus of claim 16 , wherein the at least one BWP configuration comprises a single BWP configuration for a first carrier of the multiple carriers and for a second carrier of the multiple carriers.

26 . The apparatus of claim 25 , wherein the first DCI comprises a BWP indication field indicating the BWP configuration to be activated on the first carrier and the second carrier.

27 . The apparatus of claim 26 , wherein:

the first DCI comprises a first DCI format configured for multi-carrier data channel scheduling;

the BWP configuration indicates a BWP on only the first carrier; and

the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to:

generate a second DCI on the first carrier in response to the BWP configuration, the second DCI having a second DCI format configured for single-carrier data channel scheduling based on the BWP configuration indicating the BWP on only the first carrier; and

transmit the second DCI to the UE.

28 . The apparatus of claim 27 , wherein the one or more processors are configured, individually or in any combination, to execute the instructions and cause the apparatus to:

generate a third DCI to be transmitted on the first carrier and the second carrier, the third DCI being generated based on the first DCI format configured for multi-carrier data channel scheduling in response to the second DCI indicating a BWP that spans across the first carrier and the second carrier; and

transmit the third DCI to the UE.

29 . A method for wireless communication at a user equipment (UE), comprising:

receiving, from a network entity, a first downlink control information (DCI) indicating resources are allocated for at least one data channel on multiple carriers, wherein the first DCI comprises a joint bandwidth part (BWP) indication field for the multiple carriers for activating at least one BWP configuration on each carrier of the multiple carriers; and

communicating with the network entity in accordance with the first DCI based on the at least one BWP configuration.

30 . A method for wireless communication at a network entity, comprising:

generating a first downlink control information (DCI) indicating resources are allocated for at least one data channel on multiple carriers, wherein the first DCI comprises a joint bandwidth part (BWP) indication field for the multiple carriers for activating at least one BWP configuration on each carrier of the multiple carriers, the first DCI being generated based on the at least one BWP configuration to be activated;

transmitting the first DCI to a user equipment (UE); and

communicating with the UE in accordance with the first DCI.