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

Abstract

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.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, system and equipment for transmitting power control information and power control. Background technique [0002] In LTE system subframe i, UE (terminal) transmission power P of PUCCH (Physical Uplink Control Channel, physical uplink control channel) PUCCH The settings are defined as follows: [0003] P PUCCH (i)=min{P CMAX , P 0_PUCCH +PL+h(n CQI , n HARQ )+Δ F_PUCCH (F)+g(i)}[dBm] (For details, please refer to the protocol 3GPP TS 36.213) [0004] in: g(i) is the current PUCCH power control adjustment value. [0005] δ PUCCH It is a terminal-specific correction value, that is, the TPC (Transmit Power Control, transmit power control) command, which is included in the bearer DCI (Downlink Control Information, downlink control information) formats 1A, 1B, 1D, 1, 2A, 2B, 2C and 2 in the PDCCH (physical downlink control channel, physical d...

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Problems solved by technology

[0010] A method, system, and device for transmitting power control information and power control provided by the embodiments of the present invention are used to solve the problem in the prior art that when the TPC domain is used to indicate non-TPC commands, the terminal cannot perform PUCCH power control, As a result, the PUCCH power accuracy rate decreases

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