Methods and systems of power control for uplink transmission

An apparatus comprising:

• one or more processors in communication with a non-transitory storage medium storing instructions, wherein execution of the instructions by the one or more processors causes the one or more processors to:
• obtain information of a reference signal (RS) relationship between an RS and a physical uplink (UL) channel;
• obtain a power control set associated with the RS relationship, wherein the power control set includes a target power, a downlink (DL) RS for path-loss estimation, and a factor of a transmit power command;
• determine according to the RS relationship, a value of the target power, a value of the path-loss estimation corresponding to the DL RS, and a value of the transmit power command;
• and
• determine a transmit power for transmitting the physical UL channel based on the value of the target power, the value of the path-loss estimation and the value of the transmit power command.

A method comprising:

• determining, by an apparatus, information of a reference signal (RS) relationship between an RS and a physical uplink (UL) channel, and a power control set associated with the RS relationship, wherein the power control set includes a target power, a DL RS for path-loss estimation, and a factor of a transmit power command;
• transmitting, by the apparatus, the information of the RS relationship and the power control set to a user equipment (UE);
• and
• receiving, by the apparatus, the physical UL channel from the UE, wherein a transmit power of the physical UL channel is obtained based on a value of the target power, a value of the path-loss estimation and a value of the transmit power command, and wherein the value of the target power, the value of the path-loss estimation corresponding to the DL RS, and the value of the transmit power command are determined based on the RS relationship.

A apparatus comprising:

• one or more processors in communication with a non-transitory storage medium storing instructions, wherein execution of the instructions by the one or more processors causes the one or more processors to:
• determine information of a reference signal (RS) relationship between an RS and a physical uplink (UL) channel, and a power control set associated with the RS relationship, wherein the power control set includes a target power, a downlink (DL) RS for path-loss estimation, and a factor of a transmit power command;
• transmit the information of the RS relationship and the power control set to a user equipment (UE);
• and
• receive the physical UL channel from the UE, wherein a transmit power of the physical UL channel is obtained based on a value of the target power, a value of the path-loss estimation and a value of the transmit power command, and wherein the value of the target power, the value of the path-loss estimation corresponding to the DL RS, and the value of the transmit power command are determined based on the RS relationship.

A non-transitory computer-readable medium having instructions stored thereon that, when executed by an apparatus, cause the apparatus to perform operations, the operations comprising:

• obtaining information of a reference signal (RS) relationship between an RS and a physical uplink (UL) channel;
• obtaining a power control set associated with the RS relationship, wherein the power control set includes a target power, a downlink (DL) RS for path-loss estimation, and a factor of a transmit power command;
• determining according to the RS relationship, a value of the target power, a value of the path-loss estimation corresponding to the DL RS, and a value of the transmit power command;
• and
• determining a transmit power for transmitting the physical UL channel based on the value of the target power, the value of the path-loss estimation and the value of the transmit power command.