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Calibration method of mobile terminal

A technology of mobile terminals and calibration methods, applied in electrical components, wireless communications, etc., can solve the problems of frequent command interactions between computers and mobile terminals, sacrifice of calibration accuracy, etc., and achieve the effect of reducing command interactions and improving calibration efficiency

Active Publication Date: 2016-05-04
LEADCORE TECH
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Problems solved by technology

[0005] The above-mentioned existing production calibration process can be called a single-step point-by-point calibration method. This method requires command interaction between the computer and the mobile terminal for calibration at each frequency point, resulting in command interaction between the computer and the mobile terminal. Very frequently, command interaction time has become a bottleneck to improve calibration efficiency
In order to improve the efficiency of production calibration, in the existing production calibration technology, only the method of reducing the number of calibration points can be used, but this method will sacrifice part of the calibration accuracy

Method used

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  • Calibration method of mobile terminal
  • Calibration method of mobile terminal
  • Calibration method of mobile terminal

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Embodiment Construction

[0032]The production calibration of the mobile terminal proposed by the present invention is aimed at the uplink and downlink calibration of the mobile terminal, including AGC (Automatic Gain Control) calibration and APC (Automatic Power Control) calibration. Here, the mobile terminal may include portable electronic devices such as mobile phones, personal digital assistants with mobile communication functions, and tablet computers. The communication modes of these mobile terminals may be GSM mode, TD-SCDMA mode or other modes. The mobile terminal can be a single-mode terminal that only supports one communication mode, or a multi-mode terminal that supports two or more modes.

[0033] When calibrating, use a console, such as a personal computer, that controls the calibration process. In addition, comprehensive test instruments may include signal sources and signal analysis instruments. The signal source is a device that can transmit signals required for calibration, such as T...

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Abstract

The invention relates to a mobile terminal calibration method which is used for AGC (automatic gain control) calibration and APC (automatic power control) calibration of a mobile terminal. The method includes: controlling a comprehensive test instrument and the mobile terminal to be synchronous through a console; after synchronization is completed, sending a first communication signal by means of a series of designated APC control words and a series of frequency points at a first designated time slot on the mobile terminal according to setup of the console; measuring signal intensity of a second received communication signal by means of a series of designated AGC control words and a series of frequency points at a second designated time slot; synchronously measuring the power of the second communication signal of multiple power levels at the second designated time slot and frequency points on the instrument according to setup of the console and measuring the power of the first communication signal sent to the mobile terminal at the first designated time slot and frequency points; and calculating and judging on the console according to measurement values fed back by the instrument and the mobile terminal and outputting final results to the mobile terminal for storage.

Description

technical field [0001] The invention relates to calibration in the production process of mobile terminals, especially automatic gain control (AGC) calibration and automatic power control (APC) calibration. Background technique [0002] Mobile terminals, such as mobile phones, need to undergo downlink signal calibration and uplink signal calibration before leaving the factory. The downlink signal calibration is automatic gain control (AGC) calibration, and the uplink signal calibration is automatic power control (APC) calibration. In terms of AGC calibration, the signal received by the radio frequency receiver has a large power range. By adjusting the AGC voltage, the amplitude of the baseband signal before sampling can be maintained in a constant range. The calibration of the AGC voltage is to measure the corresponding relationship between the control voltage and the power of the received signal, and write this corresponding relationship into the storage medium. Similarly,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/00H04W88/02
Inventor 夏晶陈远达刘浪郑映军
Owner LEADCORE TECH
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