Method and device for controlling transmission power of user equipment

Abstract

The invention discloses a user equipment transmission power control method and device. Including: the UE receives the downlink channel signal from the base station, and analyzes the received downlink channel signal; generates the uplink channel signal according to the analyzed downlink channel signal, and calculates the uplink transmission power; according to the downlink channel signal, uplink transmission power, uplink Determine the power calibration value of the uplink channel data signal and DMRS respectively according to the power increment in the generation process of the channel data signal and DMRS; For the baseband processing characteristic parameters, the power calibration of the uplink channel data signal and the power calibration of the DMRS are performed separately in the baseband processing process, and then the power calibration of the uplink channel data signal and the power calibration of the DMRS are uniformly performed in the hardware power control process. The present invention can precisely control the transmit power of UE.

Description

technical field [0001] The present invention relates to the communication field, in particular to a user equipment transmission power control method and device. Background technique [0002] In order to ensure the data rate of the user equipment (UE, User Equipment) and reduce the interference of the user to other users, the uplink transmission power of the UE of the user is strictly controlled in the Long Term Evolution (LTE, Long Term Evolution) system and its evolution system. limit. [0003] Since the bandwidth allocated to the UE for uplink transmission is variable within the unit scheduling time, in the baseband processing process, if the same processing flow is used for different bandwidth configurations, it will cause a large loss of accuracy in the signal baseband signal processing; In the baseband processing process, if different processing procedures are adopted for different bandwidth configurations, the transmit power of UE uplink subframes will be greatly diff...

AI Technical Summary

Problems solved by technology

[0006] However, this document in the prior art only proposes the idea of ​​transmitting power calibration from the control flow, and does not effectively eliminate the influence of the power increment introduced in the baseband signal processing process, nor does it effectively eliminate the influence of the data signal in a subframe and the demodulation reference signal are adjusted to the same power level, so processing according to the existing technical scheme will inevitably cause a deviation between the actual power transmitted by the UE and the power that the base station expects the UE to transmit

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