Method for transmitting power headroom, terminal device, and network device

A terminal device, comprising:

• a memory storing computer-readable instructions;
• and
• a processor coupled to the memory and configured to execute the computer-readable instruction, wherein the computer-readable instructions, when executed by the processor, cause the processor to perform operations comprising:
• sending a Power Headroom (PH) value of a serving cell to a network device, wherein the PH value is a first PH value of a first Sounding Reference Signal (SRS) or a second PH value of a second SRS,
• wherein the first PH value is obtained based on first configuration information of the first SRS, the first SRS is an SRS used for positioning, and the second SRS is an SRS used for measurement, and
• wherein before sending the PH value of the serving cell to the network device, the method further comprises:
• calculating a path loss value based on a transmit power of a path loss reference signal and a receive power obtained by measuring the path loss reference signal;
• and
• obtaining the first PH value based on the path loss value, a p0 power value, a path loss coefficient, and a maximum transmit power of the serving cell,
• wherein the first configuration information comprises the path loss reference signal, the p0 power value, and the path loss coefficient, and
• wherein the path loss reference signal is a signal transmitted by a target cell, and the target cell comprises at least one of the serving cell or a neighboring cell.

A network device, comprising:

• a memory storing computer-readable instructions;
• and
• a processor coupled to the memory and configured to execute the computer-readable instructions, wherein the computer-readable instructions, when executed by the processor, cause the processor to perform operations comprising:
• receiving a Power Headroom (PH) value of a serving cell sent by a terminal device, wherein the PH value is a first PH value of a first Sounding Reference Signal (SRS) or a second PH value of a second SRS,
• wherein the first PH value is obtained based on first configuration information of the first SRS, the first SRS is an SRS used for positioning, and the second SRS is an SRS used for measurement,
• wherein a path loss value is calculated based on a transmit power of a path loss reference signal and a receive power obtained by measuring the path loss reference signal,
• wherein the first PH value is obtained based on the path loss value, a p0 power value, a path loss coefficient, and a maximum transmit power of the serving cell,
• wherein the first configuration information comprises the path loss reference signal, the p0 power value, and the path loss coefficient, and
• wherein the path loss reference signal is a signal transmitted by a target cell, and the target cell comprises at least one of the serving cell or a neighboring cell.