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Method and device for automatic calibration of third-generation TD-SCDMA mobile terminal

A mobile terminal, automatic calibration technology, applied in the direction of code division multiplexing system, selection device, multiplexing communication, etc., can solve the problems of inaccurate calibration results, taking a long time, restricting terminal production efficiency, etc. , to achieve the effect of improving the calibration efficiency and the calibration accuracy

Inactive Publication Date: 2007-10-03
XUANPU INDUSTRY CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This method will take a long time for the entire calibration work due to the need for two software downloads
Moreover, since this independent calibration procedure cannot simulate the actual use of the terminal, the calibration results are inaccurate and need to be compensated
Using this scheme for calibration is an effective solution in the development of terminals and small batch production, but when the terminal enters mass production, it will seriously restrict the production efficiency of the terminal

Method used

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  • Method and device for automatic calibration of third-generation TD-SCDMA mobile terminal
  • Method and device for automatic calibration of third-generation TD-SCDMA mobile terminal
  • Method and device for automatic calibration of third-generation TD-SCDMA mobile terminal

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Embodiment approach

[0123] As shown in Figure 1, the device for the TD-SCDMA / 3G mobile terminal automatic calibration provided by the present invention includes a computer 101 and a TD-SCDMA comprehensive tester 102;

[0124] Described computer 101 connects TD-SCDMA comprehensive testing instrument 102 by GPIB interface;

[0125] The computer 101 is connected and communicated with the terminal 103 to be tested through a serial communication interface;

[0126] The TD-SCDMA comprehensive testing instrument 102 is connected to the terminal to be tested 103;

[0127] The TD-SCDMA comprehensive tester 102 has the functions of transmitting frequency and power measurement and outputting TD-SCDMA signal source.

[0128] Between the described terminal to be tested 103 and the TD-SCDMA comprehensive testing instrument 102, a delayer (not shown in the figure) controlled by the computer 101 is set, and it guarantees that the TD-SCDMA comprehensive testing instrument 102 and the terminal to be tested 103 T...

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Abstract

This invention relates to an automatic calibration method and a device for radio frequencies of TD-SCDMA / 3G mobile terminals, which can calibrate RF, emission power and received gain of mobile terminals automatically and store the calibrated results in NVRAM in the way of files with FFS. This invention can adjust the RF performance of terminals effectively mainly to current TD-SCDMA mobile terminals that their chips do not have the same control attribute.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a method and device for automatic radio frequency calibration of a TD-SCDMA / 3G (third generation Time Division Synchronous Code Division Multiple Access) mobile terminal. Background technique [0002] TD-SCDMA is a 3G technical standard independently proposed by China, which has high requirements on the control accuracy of terminal radio frequency, transmit power and receive gain. TD-SCDMA terminal radio frequency chip and VCTCXO (Voltage Controlled Temperature Compensated Crystal Oscillator) device do not have consistent control properties, resulting in each terminal has its own inherent radio frequency characteristics, so fast and accurate calibration is critical for each TD-SCDMA terminal is important and necessary. [0003] At present, there is no comprehensive and effective TD-SCDMA terminal radio frequency automatic calibration scheme, and the only ones are calibration sc...

Claims

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Application Information

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IPC IPC(8): H04Q7/32H04B1/707H04B7/005H04J13/02H04B17/00H04W24/00
Inventor 陈德军胡新宏刘富忠范文付
Owner XUANPU INDUSTRY CO LTD
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