Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method, system and mobile terminal for radio frequency power calibration

A technology of radio frequency power and mobile terminals, applied in power management, transmission system, transmitter monitoring, etc., can solve the problem of large error, achieve the effect of consistent bandwidth range and improved accuracy

Inactive Publication Date: 2010-10-27
HUAWEI DEVICE CO LTD
View PDF5 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method, system and mobile terminal for radio frequency power calibration, which are used to solve the problem of large errors in radio frequency power calibration for mobile terminals in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method, system and mobile terminal for radio frequency power calibration
  • Method, system and mobile terminal for radio frequency power calibration
  • Method, system and mobile terminal for radio frequency power calibration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0042] Figure 4 It is a flow chart of the second embodiment of the method for calibrating radio frequency power according to the embodiment of the present invention. Such as Figure 4 As shown, the method for radio frequency power calibration in the embodiment of the present invention specifically includes the following steps:

[0043] Step 401, the mobile terminal enters the FTM mode.

[0044] Figure 5 It is a device connection diagram of Embodiment 2 of the method for calibrating radio frequency power according to the embodiment of the present invention. Such as Figure 5 As shown, in the FTM mode, the mobile terminal can be connected to the RF tester through the RF test cable, and the calibration software installed in the computer sends control to the mobile terminal through the serial port or the universal serial bus (diagnosisUniversal Serial BUS, DIAG USB) interface. Instructions to send power test signals to the RF tester, and the calibration software installed i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method, a system and a mobile terminal for radio frequency power calibration. The method comprises the following steps of: demodulating reference frequency of a forward pilot signal; performing clock synchronization according to the reference frequency of the forward pilot signal; and transmitting a power test signal corresponding to the calibration reference frequency to make a radio frequency tester detect the power value of a power test signal. By synchronizing the reference clock frequency of the mobile terminal with the reference clock frequency of the radio frequency tester and setting the same calibration reference channel number in the radio frequency tester and the mobile terminal, the embodiment of the invention ensures that the radio frequency signal transmitted by the mobile terminal has the same frequency as the measured frequency of the radio frequency tester and has the same bandwidth range as that of the measured frequency; and thus the power of the radio frequency signal transmitted by the mobile terminal is completely received by the radio frequency tester, so that the accuracy of testing the power of the radio frequency signal of the mobile terminal is improved and the mobile terminal can accurately select the PDM value to control the power of the radio frequency signal during the use.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a radio frequency power calibration method, system and mobile terminal. Background technique [0002] The Code-Division Multiple Access (CDMA) system is an interference-limited system. The RF power amplifier of the mobile phone is the last stage on the transmission link of the CDMA mobile phone. The base station will move to the base station according to the distance between the mobile phone and the base station. The phone sends instructions to instruct the mobile phone to send radio frequency signals with a certain power, so as to prevent the system capacity from being affected by too much radio frequency power, or the signal quality from being affected by too small radio frequency power. [0003] According to the CDMA protocol, the minimum power control step of the radio frequency power amplifier of the CDMA mobile phone is + / -0.25dB. In the process of production and assembly...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00H04W52/04H04W56/00H04B17/00H04B7/26H04B17/13
Inventor 杨丽萍
Owner HUAWEI DEVICE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com