Power control method and device
Embodiments of this application describe a power control method and a device, and relate to the field of communications technologies. A network device operating in a full-duplex mode can correctly receive data during data sending. The method may include receiving, by user equipment (UE), power control parameter information of an uplink transmit power from a network device, where the power control parameter information includes first power control parameter information and second power control parameter information, the first power control parameter information is used to calculate an uplink transmit power for data transmission on a non-full-duplex resource, and the second power control parameter information includes a parameter for calculating an uplink transmit power for data transmission on a full-duplex resource. The method may also include determining, by the UE, an uplink transmit power based on the power control parameter information and a resource type used for uplink transmission, where the resource type includes a full-duplex resource and a non-full-duplex resource.
1. A power control method, comprising:
receiving, by user equipment (UE), power control parameter information of an uplink transmit power from a network device, wherein the power control parameter information comprises first power control parameter information and second power control parameter information, the first power control parameter information is used to calculate an uplink transmit power for data transmission on a non-full-duplex resource, and the second power control parameter information comprises a parameter for calculating an uplink transmit power for data transmission on a full-duplex resource; and
determining, by the UE, an uplink transmit power based on the power control parameter information and a resource type used for uplink transmission, wherein the resource type comprises a full-duplex resource and a non-full-duplex resource, wherein the method further comprises:
receiving, by the UE, first indication information sent by the network device, wherein the first indication information comprises closed-loop power control process indication information, and the closed-loop power control process indication information indicates that a closed-loop power control process comprises a closed-loop power control process used for full-duplex, and
when the resource type used by the UE for uplink transmission changes, redetermining, by the UE, a type of the closed-loop power control process based on the first indication information, wherein the closed-loop power control process indication information is PUSCH-closed-loop-index and the UE redetermines a value of the PUSCH-closed-loop index.
2. The method according to claim 1 , wherein the second power control parameter information comprises at least one second power control parameter, and the at least one second power control parameter is related to at least one of the following information:
a channel type of uplink transmission;
a service type of uplink transmission;
transmission content of uplink transmission;
a beam corresponding to uplink transmission;
a carrier corresponding to uplink transmission; and
a bandwidth part BWP corresponding to uplink transmission.
3. The method according to claim 2 , wherein the channel type comprises at least one of a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), a physical random access channel (PRACH), and a sounding reference signal (SRS); and the service type comprises at least one of enhanced mobile broadband (eMBB), ultra-reliable and latency communications (URLLC), and enhanced machine type communications (eMTC).
4. The method according to claim 1 , wherein the second power control parameter information is at least one of third power control parameter information and fourth power control parameter information, the third power control parameter information is determined based on a first interference cancellation capability of the network device, and the fourth power control parameter information is determined based on a second interference cancellation capability of the network device.
5. The method according to claim 1 , wherein the full-duplex resource comprises at least one of a time domain resource, a frequency domain resource, and a space domain resource.
6. The method according to claim 5 , wherein the time domain resource comprises a super frame, a frame, a slot, a subframe, a micro-subframe, a micro-slot, an orthogonal frequency division multiplexing (OFDM) symbol, a mini-slot, or a mini-subframe; and the frequency domain resource comprises a control channel element (CCE), a control resource set (CORSET), a physical resource block (PRB), a bandwidth part (BWP), or a carrier, and the space domain resource comprises a beam, a beam pair, a beam group, or an antenna port.
7. The method according to claim 1 , wherein the receiving, by the UE, power control parameter information of the uplink transmit power from the network device comprises:
receiving, by the UE through at least one of radio resource control (RRC) signaling, media access control (MAC) signaling, or physical layer signaling, the power control parameter information of the uplink transmit power from the network device.
8. The method according to claim 1 , wherein the first power control parameter information comprises fifth power control parameter information and sixth power control parameter information, the fifth power control parameter information is used to calculate the uplink transmit power for data transmission on an uplink non-full-duplex resource, and the sixth power control parameter information is used to calculate the uplink transmit power for data transmission on a flexible duplex resource.
9. The method according to claim 1 , wherein the first indication information further comprises power control adjustment status indication information, and the power control adjustment status indication information indicates a value range of the closed-loop power control process indication information.
10. The method according to claim 1 , wherein when the closed-loop power control process is in an accumulation mode, a closed-loop power control parameter is accumulated based on a closed-loop power control parameter value corresponding to a previous resource unit whose resource type is the same as that of a current resource unit, wherein the closed-loop power control parameter is used to determine the uplink transmit power.
11. A user equipment (UE), comprising:
a transceiver configured to receive power control parameter information of an uplink transmit power from a network device, wherein the power control parameter information comprises first power control parameter information and second power control parameter information, the first power control parameter information is used to calculate uplink a transmit power for data transmission on a non-full-duplex resource, and the second power control parameter information comprises a parameter for calculating an uplink transmit power for data transmission on a full-duplex resource; and
a processor, coupled with the transceiver, configured to determine an uplink transmit power based on the power control parameter information and a resource type used for uplink transmission, wherein the resource type includes a full-duplex resource and a non-full-duplex resource,
wherein the transceiver is further configured to:
receive first indication information sent by the network device, wherein the first indication information comprises closed-loop power control process indication information, and the closed- loop power control process indication information indicates that a closed-loop power control process comprises a closed-loop power control process used for full-duplex, and
wherein the processor is further configured to:
determine whether a resource type used by the UE for uplink transmission changes, and
when it is determined that the resource type used by the UE for uplink transmission changes, redetermine a type of the closed-loop power control process based on the first indication information wherein the closed-loop power control process indication information is PUSCH-closed-loop-index and the UE redetermines a value of the PUSCH-closed-loop index.
12. The UE according to claim 11 , wherein the second power control parameter information comprises at least one second power control parameter, and the at least one second power control parameter is related to at least one of the following information:
a channel type of uplink transmission;
a service type of uplink transmission;
transmission content of uplink transmission;
a beam corresponding to uplink transmission;
a carrier corresponding to uplink transmission; and
a bandwidth part BWP corresponding to uplink transmission.
13. The UE according to claim 11 , wherein the full-duplex resource comprises at least one of a time domain resource, a frequency domain resource, and a space domain resource.
14. The UE according to claim 11 , wherein the transceiver configured to receive the power control parameter information of the uplink transmit power from the network device comprises the transceiver further configured to:
receive, through at least one of radio resource control (RRC) signaling, media access control (MAC) signaling, or physical layer signaling, the power control parameter information of the uplink transmit power from the network device.
15. The UE according to claim 11 , wherein the first power control parameter information comprises fifth power control parameter information and sixth power control parameter information, the fifth power control parameter information is used to calculate the uplink transmit power for data transmission on an uplink non-full-duplex resource, and the sixth power control parameter information is used to calculate the uplink transmit power for data transmission on a flexible duplex resource.
16. The UE according to claim 11 , wherein the first indication information further comprises power control adjustment status indication information, and the power control adjustment status indication information indicates a value range of the closed-loop power control process indication information.