Transmit power control information and power control method, system and device

摘要

An embodiment of the present invention relates to the technical field of wireless communication. Disclosed are a transmit power control and power control method, system and device for solving the problem of user equipment unable to control the power of a PDCCH when reusing a TPC command, thus decreasing the PDCCH power accuracy. The method in the embodiment of the present invention comprises: determining whether the TPC domain in a first DCI format information is a non-TPC command after a user equipment receiving the first DCI format information; when the TCP domain of the first DCI format information received by the user equipment is a non-TPC command, and after receiving a second DCI format information in the downlink sub-frame receiving the first DCI format information, using the TPC command in the second DCI format information to control the PUCCH power. Employing the method of the present invention can improve the PUCCH power accuracy and the performance of the user equipment.

主权项

1. A power control method, wherein the method comprises:
a user equipment determining whether information in a Transmit Power Control, TPC, field in first Downlink Control Information, DCI, format is a non-TPC command after receiving the first DCI format; and the user equipment performing Physical Uplink Control Channel, PUCCH, power control with a TPC command in second DCI format when the information in the TPC field in the first DCI format is the non-TPC command and the user equipment receives the second DCI format in a downlink sub-frame in which the first DCI format is received, wherein after the user equipment determines whether the information in the TPC field in first DCI format is the non-TPC command, the method further comprises: when the information in the TPC field in the first DCI format is a TPC command, the user equipment performing Physical Uplink Control Channel, PUCCH, power control with the TPC command in the first DCI format; and when the information in the TPC field in the first DCI format is the non-TPC command and the user equipment does not receive the second DCI format in the downlink sub-frame in which the first DCI format is received, the user equipment determining an adjustment value of PUCCH power as zero.