Method for controlling uplink transmit power in inter-base station carrier aggregation, base station, and device

1. A method comprising:

providing for a first base station, by a second base station, a status of an uplink resource that is scheduled by the second base station for a user equipment (UE), wherein a maximum uplink transmit power that is allocated by the UE to the first base station is based on the status of the uplink resource; and

scheduling for the UE, by the second base station, the uplink resource according to the status of the uplink resource.

2. The method according to claim 1 , wherein the first base station is a secondary base station and the second base station is a master base station.

3. The method according to claim 1 , wherein providing for the first base station, by the second base station, the status of the uplink resource that is scheduled by the second base station for the UE comprises:

sending, by the second base station, the status of the uplink resource to the first base station; or

sending, by the second base station, the status of the uplink resource to the first base station through the UE.

4. The method according to claim 1 , wherein the status of the uplink resource indicates a time that the second base station does not schedule uplink data of the UE.

5. The method according to claim 1 , further comprising:

sending, by the second base station to the first base station, the maximum uplink transmit power that is allocated by the UE to the first base station.

6. The method according to claim 1 , further comprising sending, by the second base station to the first base station, a maximum uplink transmit power allocated by the UE, or a maximum transmit power of the UE.

7. A method comprising:

acquiring, by a user equipment (UE), a status of an uplink resource that is scheduled by a second base station for the UE; and

reporting to a first base station, by the UE, the status of the uplink resource, wherein a maximum uplink transmit power that is allocated by the UE to the first base station is based on the status of the uplink resource; or

determining, by the UE, according to the status of the uplink resource, a maximum uplink transmit power that is allocated by the UE to the first base station, and reporting, by the UE to the first base station, the maximum uplink transmit power.

8. The method according to claim 7 , wherein the first base station is a secondary base station and the second base station is a master base station.

9. The method according to claim 7 , wherein determining, by the UE, according to the status of the uplink resource, the maximum uplink transmit power that is allocated by the UE to the first base station comprises:

determining, by the UE, an offset of an uplink transmit power according to the status of the uplink resource that is scheduled by the second base station for the UE; and

adding, by the UE, the offset to an initial maximum uplink transmit power that is allocated by the UE to the first base station, and determining, by the UE, that a sum of the offset and the initial maximum uplink transmit power is the maximum uplink transmit power allocated by the UE to the first base station.

10. The method according to claim 7 , wherein the acquiring, by the UE, the status of an uplink resource that is scheduled by a second base station for the UE comprises

receiving, by the UE, the status of the uplink resource, the status of the uplink resource being sent by the second base station using a media access control element (MAC) control element (CE), a radio resource control (RRC) message, or uplink control information; or

receiving, by the UE, a semi-persistent scheduling (SPS) configuration command, an SPS configuration deletion command, an SPS activation instruction, and an SPS deactivation instruction that are sent by the second base station, and using the commands and instructions as the status of the uplink resource; or

identifying, by the UE, whether the second base station does not schedule the uplink resource within a set time, and determining the status of the uplink resource according to an identification result.

11. A second base station comprising:

a processor; and

a computer-readable storage medium storing a program to be executed by the processor, the program including instructions for:

providing for a first base station, a status of an uplink resource that is scheduled by the second base station for user equipment (UE), wherein a maximum uplink transmit power that is allocated by the UE to the first base station is based on the status of the uplink resource; and

scheduling for the UE, the uplink resource according to the status of the uplink resource.

12. The second base station according to claim 11 , wherein the first base station is a secondary base station and the second base station is a master base station.

13. The second base station according to claim 11 , wherein providing for the first base station, the status of the uplink resource that is scheduled by the second base station for the UE comprises:

utilizing a transmitter to send the status of the uplink resource to the first base station; or

utilizing a transmitter to send the status of the uplink resource to the first base station through the UE.

14. The second base station according to claim 11 , wherein the status of the uplink resource indicates a time that the second base station does not schedule uplink data of the UE.

15. The second base station according to claim 11 , wherein the instructions further comprise sending to the first base station, the maximum uplink transmit power that is allocated by the UE to the first base station.

16. The second base station according to claim 11 , wherein the instructions further comprise sending to the first base station, a maximum uplink transmit power allocated by the UE, or a maximum transmit power of the UE.

17. A device comprising:

a processor coupled with a memory, wherein the memory stores a program to be executed by the processor, the program including instructions for:

acquiring a status of an uplink resource that is scheduled by a second base station for the device; and

reporting to a first base station the status of the uplink resource, wherein a maximum uplink transmit power that is allocated by the device to the first base station is based on the status of the uplink resource; or

determining, according to the status of the uplink resource, a maximum uplink transmit power that is allocated by the device to the first base station, and reporting to the first base station, the maximum uplink transmit power.

18. The device according to claim 17 , wherein the first base station is a secondary base station and the second base station is a master base station.

19. The device according to claim 17 , wherein determining, according to the status of the uplink resource, the maximum uplink transmit power that is allocated by the device to the first base station, comprises:

determining an offset of an uplink transmit power according to the status of the uplink resource that is scheduled by the second base station for the device; and

adding the offset to an initial maximum uplink transmit power that is allocated by the device to the first base station, and determining that a sum of the offset and the initial maximum uplink transmit power is the maximum uplink transmit power allocated by the device to the first base station.

20. The device according to claim 17 , wherein acquiring the status of the uplink resource that is scheduled by the second base station for the device comprises:

utilize a receiver to receive the status of the uplink resource, the status of the uplink resource being sent by the second base station using a media access control element (MAC) control element (CE), a radio resource control (RRC) message, or uplink control information; or

utilize a receiver to receive a semi-persistent scheduling (SPS) configuration command, an SPS configuration deletion command, an SPS activation instruction, and an SPS deactivation instruction that are sent by the second base station, and using the commands and instructions as the status of the uplink resource; or

identifying whether the second base station does not schedule the uplink resource within a set time, and determining the status of the uplink resource according to an identification result.