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

Abstract

An embodiment of the invention relates to the technical field of wireless communication, in particular to a transmit power control information and a power control method, a power control system and power control equipment for solving the problem that a terminal is incapable of performing physical downlink control channel (PDCCH) power control in the prior art when a transmit power control (TPC) command is reused, so that the PDCCH power accuracy rate is reduced. The method disclosed by the embodiment of the invention comprises the following steps that: after receiving first downlink control information (DCI) format information, the terminal judges whether a non-TPC command is in a transmit TPC domain of the first DCI format information; if the non-TPC command is in the TPC domain of the first DCI format information received by the terminal, and after second DCI format information is received in a downlink subframe of the received first DCI format information, the TPC command in the second DCI format information is employed to perform the PDCCH power control. By the method disclosed by the embodiment of the invention, the PDCCH power accuracy rate and the performance of the terminal can be improved.

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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