Uplink power control method, user equipment and base station

A user equipment, comprising:

• a receiver configured to receive configuration information of a channel state information reference signal (CSI-RS) from a base station, wherein the configuration information of the CSI-RS comprises reference signal port information and reference signal power information, wherein the reference signal power information comprises a difference between a transmitting power of the CSI-RS and a transmitting power of a common reference signal;
• and
• a processor configured to:
• determine an antenna port to be measured based on the reference signal port information,
• measure a reference signal receiving power (RSRP) of the CSI-RS on the antenna port,
• determine a path loss according to the measured RSRP and the reference signal power information, and
• determine, based on the reference signal port information, that multiple antenna ports are to be measured,
• wherein determining the path loss according to the measured RSRP and the reference signal power information comprises:
• averaging the RSRP measured on one or more subsets of the multiple antenna ports, then obtaining path losses corresponding to the one or more subsets according to the averaged RSRP, and obtaining the path loss for uplink power control according to the corresponding path losses,
• wherein the configuration information further comprises an identification bits for indicating a function of the reference signal port information, and when the identification bits indicate that the reference signal port information is used for channel state information measurement, the processor is further configured to measure the channel state information on the antenna port indicated by the reference signal port information.

A non-transitory computer-readable storage medium storing instructions that, when executed by a processor, cause a computer to carry out the steps of:

• receiving configuration information of a channel state information reference signal (CSI-RS) from a base station, wherein the configuration information of the CSI-RS comprises reference signal port information and reference signal power information, wherein the reference signal power information comprises a difference between a transmitting power of the CSI-RS and a transmitting power of a common reference signal;
• determining an antenna port to be measured based on the reference signal port information;
• measuring a reference signal receiving power (RSRP) of the CSI-RS on the antenna port;
• and
• determining a path loss according to the measured RSRP and the reference signal power information, wherein determining the path loss comprises determining that the path loss is equal to a value of subtracting the measured RSRP from a sum of the transmitting power of the common reference signal and the difference between the transmitting power of the CSI-RS and the transmitting power of the common reference signal;
• wherein the configuration information further comprises identification bits for indicating a function of the reference signal port information, and when the identification bits indicate that the reference signal port information is used for channel state information measurement, the computer further carries out the step of measuring the channel state information on the antenna port indicated by the reference signal port information.