Method for power control parameter determination, terminal, and network device

A terminal, comprising:

• a transceiver;
• a memory storing computer programs;
• and
• a processor configured to invoke and execute the computer programs to:
• cause the transceiver to receive radio resource control (RRC) signaling, wherein the RRC comprises a correspondence between M transmission configuration indication (TCI) states and power control parameters, M being an integer and M>=1;
• wherein each of the M TCI states comprises:
• a quasi co-location (QCL) type, a source reference signal, a reference serving cell, and a reference bandwidth part (BWP);
• wherein each of the power control parameters comprises:
• a parameter used for determining a target receive power, a parameter used for determining a pathloss weight factor, and a parameter used for determining a closed-loop power control adjustment state;
• activate, via a media access control-control element (MAC CE), K TCI states from the M TCI states, K≤M;
• determine a target TCI state for a physical uplink shared channel (PUSCH) from the K TCI states according to TCI-state indication information in downlink control information (DCI), wherein the target TCI state is a TCI state indicated by the TCI-state indication information from the K TCI state that is used for PUSCH transmission and activated via the MAC CE, wherein each indication value of the TCI-state indication information corresponds to one or more TCI states among the K TCI states;
• and
• determine a power control parameter of the PUSCH according to the target TCI state and the correspondence between M TCI states and power control parameters in the RRC signaling.

A network device, comprising:

• a transceiver;
• a memory storing computer programs;
• and
• a processor configured to invoke and execute the computer programs to:
• configure for a terminal a correspondence between M transmission configuration indication (TCI) states and power control, via radio resource control (RRC) signaling, wherein M is an integer and M>=1, each of the M TCI states comprises:
• a quasi-co-location (QCL) type, a source reference signal, a reference serving cell, and a reference bandwidth part (BWP);
• each of the power control parameters comprises:
• a parameter used for determining a target receive power, a parameter used for determining a pathloss weight factor, and a parameter used for determining a closed-loop power control adjustment state;
• and
• configure for the terminal a target TCI state for a physical uplink shared channel (PUSCH) via downlink control information (DCI), wherein the target TCI state and the correspondence are used for the terminal to determine a power control parameter of the PUSCH;
• the DCI comprises TCI-state indication information, and each indication value of the TCI-state indication information corresponds to one or more TCI states among K TCI, wherein the target TCI state belongs to the K TCI states, and the K TCI states belong to the M TCI states and are to be activated by the terminal via a media access control-control element (MAC CE), K≤M.