UPLINK POWER CONTROL METHOD, USER EQUIPMENT AND BASE STATION

摘要

Embodiments of the present disclosure provide an uplink power control method, a user equipment and a base station. The method comprises: receiving configuration information of a channel state information reference signal CSI-RS from the base station, wherein the configuration information of the CSI-RS comprises reference signal port information and reference signal power information; and measuring a path loss for uplink power control based on the configuration information of the CSI-RS. The embodiments of the present disclosure use the CSI-RS to measure the path loss, which differs from a common CRS in that the CSI-RS may aim at a specific base station. Therefore, path loss measurement may be performed in respect of a target base station of uplink transmission, enabling the path loss compensation to match the actual path loss, thus improving the performance of uplink power control.

主权项

1. An uplink power control method, comprising:
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; determining multiple antenna ports to be measured based on the reference signal port information; measuring a reference signal receiving power (RSRP) of the CSI-RS on the multiple antenna ports; and determining a path loss according to the measured RSRP and the reference signal power information, wherein determining the path loss according to the measured RSRP and the reference signal power information comprises calculating the path loss (PLtarget) for uplink power control according to a formula:PLtarget=-10log∑iωi10PLi10 wherein PLi is a path loss corresponding to an antenna port, and ωi is a weight factor.