CN101090302A - Self-correction and self-test method formobile terminal and mobile terminal with the method - Google Patents
Self-correction and self-test method formobile terminal and mobile terminal with the method Download PDFInfo
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- CN101090302A CN101090302A CNA2007101376549A CN200710137654A CN101090302A CN 101090302 A CN101090302 A CN 101090302A CN A2007101376549 A CNA2007101376549 A CN A2007101376549A CN 200710137654 A CN200710137654 A CN 200710137654A CN 101090302 A CN101090302 A CN 101090302A
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Abstract
This invention provides a mobile terminal with self-correction and self-test function including a phase-locked loop, an amplifier, a filter, a duplexer of the emission path, a test base, a first RF switch connected between the amplifier and the filter used in switching the test reference signal to the receiving test channel, a coupler connected between a power test circuit and a first RF switch used in coupling the reference signal to the power test circuit, a power test circuit used in testing power of the reference signal, a second RF switch connected between the test base and the duplexer and connected to the coupler used in inputting the reference signal to the receiving path and a controller comparing the signal power received via the receiving path with the power tested by the power test circuit to get the gain value of the receiving chain and decide if it finishes the self-correction or the self-test.
Description
Technical field
The present invention relates to a kind of self-correcting or self-testing method of portable terminal and portable terminal, relate in particular to the mobile terminal radio frequency calibration field tests with this method.
Background technology
In traditional calibration testing scheme, the general connection of passing through as shown in Figure 2, need to adopt instruments such as signal source, frequency spectrograph to carry out, Fig. 1 is the theory diagram of a cdma mobile terminal, and for the calibration testing of cdma mobile terminal, power splitter was connected in the test bench among Fig. 1 during test connected, this test bench is a single-pole double-throw switch (SPDT) in fact, when being connected in the test power splitter, portable terminal and antenna disconnect, and the test channel of portable terminal is provided.
Calibration testing program control signal source by computer in the calibration testing process of portable terminal receiver produces reference signal, portable terminal receives this reference signal, by comparing the power and the reference signal power of receiver baseband signal, can obtain receiver and receive receiver indexs such as link gain; If receiver has different gain-state, with corresponding to different received signal scopes, the calibration testing program is by changing the signal source reference signal power, with the performance characteristic of calibration testing receiver under the varying input signal state.
Because the discreteness of the radio circuit component parameter of portable terminal, every portable terminal generally all needs to carry out in process of production calibration testing, all reaches perfect performance index, working properly to guarantee every portable terminal.Like this, in the production process of portable terminal, just need take a large amount of calibration testing instrument and operation, seriously limit its production efficiency.
And in the actual application of portable terminal, producer generally all is provided with engineering mode, by the intensity of engineering mode observation received signal, judges the performance of portable terminal receiver with this; But this determination methods depends on the signal of external network, and because the mobile communications network signal is subjected to the influence of external environment condition bigger, have bigger uncertainty, in case it is the generation problem also often is difficult to judgement system side fault or end side fault, inconvenient in actual applications.
Summary of the invention
In order to overcome the problems referred to above, the objective of the invention is to utilize the electric circuit characteristic of portable terminal itself,, realize the self-correcting self-test function of portable terminal receiver by suitable improvement, improving existing loaded down with trivial details RF calibration testing scheme, and for the function of testing oneself is provided in its use.
According to an aspect of the present invention, a kind of portable terminal with self-correcting and self-test function is provided, the amplifier and filter, duplexer and the test bench that comprise phase-locked loop circuit, emission path, it also comprises: first radio-frequency (RF) switch, be connected between the amplifier and filter of emission path, be used for the acceptance test reference signal is switched to the acceptance test passage; Coupler is connected between the power-sensing circuit and first radio-frequency (RF) switch, is used for the acceptance test reference signal is coupled to power-sensing circuit; Power-sensing circuit is used to detect the power of acceptance test reference signal; Second radio-frequency (RF) switch is connected between test bench and the duplexer, and is connected to coupler, is used to make the acceptance test reference signal to enter the reception path; And controller, to compare by described reception path signal power that receives and the power that detects by power-sensing circuit via described second radio-frequency (RF) switch, obtaining receiving the link gain value, and determine whether to finish self-correcting and handle and/or the processing of testing oneself according to receiving the link gain value.
Above-mentioned controller is used for and will carries out analog-to-digital conversion by the detected power of power-sensing circuit, and according to analog-to-digital result, tabling look-up obtains corresponding acceptance test reference signal power value.
Wherein, above-mentioned controller will receive the link gain value and threshold value compares, and receiving under the situation of requirement that the link gain value meets above-mentioned threshold value, report the self-correcting/successful information of testing oneself.
In addition, under the situation of carrying out the self-correcting processing, controller is receiving under the situation of requirement that the link gain value do not meet threshold value, change the parameter of portable terminal, again self-correcting is handled, report the self-correcting success message up to receiving under the situation that the link gain value meets threshold value, or receive under the situation that the link gain value still do not meet threshold value up to pre-determined number and to report the self-correcting failed message.
Under the situation about handling of testing oneself, controller is receiving under the situation of requirement that the link gain value do not meet threshold value, again the processing of testing oneself, report the success message of testing oneself up to receiving under the situation that the link gain value meets threshold value, or receive under the situation that the link gain value still do not meet threshold value up to pre-determined number and to report the failed message of testing oneself.
According to another aspect of the present invention, provide a kind of self-correcting or self-testing method of portable terminal, may further comprise the steps: step 1, portable terminal sends the self-correcting order or the order of testing oneself; Step 2, mobile terminal configuration emission phase-locked loop circuit with generation acceptance test reference signal, and makes the acceptance test reference signal be connected to the acceptance test passage; Step 3, power-sensing circuit carries out power detection by coupler to the acceptance test reference signal, and test result is reported controller; Step 4, controller receives the link gain value according to test result calculations; And step 5, will receive link gain value and predetermined threshold value and compare, determine whether to finish self-correcting according to comparative result and handle or the processing of testing oneself.
In step 4, comprise following processing: controller calculates from receiving the performance number that link enters controller; Controller will carry out analog-to-digital conversion from the test result of power-sensing circuit simultaneously, and according to analog-to-digital result, look-up table is to obtain corresponding acceptance test reference signal power value; And compare by receiving performance number and the acceptance test reference signal power value that link enters controller, calculate and receive the link gain value.
Meet under the situation of predetermined threshold value in reception link gain value, to receive the link gain value is converted to the discernible form of controller and stores in the corresponding non-volatile value, report the self-correcting success message or the success message of testing oneself, and finish self-correcting and handle or the processing of testing oneself.
And, under the situation of carrying out the self-correcting processing, do not meet under the situation of predetermined threshold value in reception link gain value, change the parameter of portable terminal, again self-correcting is handled, report the self-correcting success message up to receiving under the situation that the link gain value meets threshold value, or receive under the situation that the link gain value still do not meet threshold value up to pre-determined number and to report the self-correcting failed message, and finish self-correcting and handle.
Under the situation about handling of testing oneself, do not meet under the situation of predetermined threshold value in reception link gain value, again the processing of testing oneself, under the situation that meets threshold value in reception link gain value, report the success message of testing oneself, or receive under the situation that the link gain value still do not meet threshold value up to pre-determined number and to report the failed message of testing oneself, and finish to test oneself processing.
Therefore, adopt the present invention, compare, saved the calibration testing instrument that production process Central Plains is used, saved the calibration testing time, improve production test efficient, had RF calibration precision preferably simultaneously with other mobile terminal radio frequency calibration schemes.In addition because the function of testing oneself is provided, the validation test after making things convenient for portable terminal to dispatch from the factory.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the theory diagram of traditional C DMA portable terminal;
Fig. 2 is the calibration testing conceptual scheme of traditional mobile terminal;
Fig. 3 is the structured flowchart according to cdma mobile terminal of the present invention;
Fig. 4 is according to the self-correcting of portable terminal of the present invention or the flow chart of self-testing method;
Fig. 5 is the particular flow sheet that portable terminal is realized self-correcting; And
Fig. 6 is the particular flow sheet that the portable terminal realization is tested oneself.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
In the present invention, utilize the transmitter of portable terminal to produce used reception reference signal in the conventional calibration testing scheme, this reference signal is fed to receiver inlet, carry out work such as calibration testing.In the method, because portable terminal transmitter PLL (phase-locked loop) generally has the frequency adjustment range of broad, be easy to generate the signal that receives frequency range, but need portable terminal is done reasonably to improve to make it being fed to receiver inlet, simultaneously by detecting its power etc. to guarantee the accuracy of calibration measurement.
Fig. 3 is the structured flowchart according to cdma mobile terminal of the present invention, is the embodiment of the present invention on the CDMA terminal.As shown in Figure 3, portable terminal with self-correcting and self-test function, the amplifier 113 and filter 111, duplexer 103 and the test bench 101 that comprise phase-locked loop circuit 117, emission path, it also comprises: first radio-frequency (RF) switch 112, be connected between the amplifier 113 and filter 111 of emission path, be used for the acceptance test reference signal is switched to the acceptance test passage; Coupler 116 is connected between the power-sensing circuit 115 and first radio-frequency (RF) switch 112, is used for the acceptance test reference signal is coupled to power-sensing circuit; Power-sensing circuit 115 is used to detect the power of acceptance test reference signal; Second radio-frequency (RF) switch 102 is connected between test bench 101 and the duplexer 103, and is connected to coupler 116, is used to make the acceptance test reference signal to enter the reception path; And controller 108, to compare by reception path signal power that receives and the power that detects by power-sensing circuit 115 via second radio-frequency (RF) switch 102, obtaining receiving the link gain value, and determine whether to finish self-correcting and handle and/or the processing of testing oneself according to receiving the link gain value.
Wherein, controller 108 will carry out analog-to-digital conversion by power-sensing circuit 115 detected power, and according to analog-to-digital result, tabling look-up obtains corresponding acceptance test reference signal power value.
In addition, controller 108 also will receive link gain value and threshold value and compare, and receiving under the situation of requirement that the link gain value meets threshold value, report the self-correcting/successful information of testing oneself.
Under the situation of carrying out the self-correcting processing, controller 108 is receiving under the situation of requirement that the link gain value do not meet threshold value, change the parameter of portable terminal, again self-correcting is handled, report the self-correcting success message up to receiving under the situation that the link gain value meets threshold value, or receive under the situation that the link gain value still do not meet threshold value up to pre-determined number and to report the self-correcting failed message.
In addition, controller 108 is receiving under the situation of requirement that the link gain value do not meet threshold value, again the processing of testing oneself, report the success message of testing oneself up to receiving under the situation that the link gain value meets threshold value, or receive under the situation that the link gain value still do not meet threshold value up to pre-determined number and to report the failed message of testing oneself.
Particularly, adopt transmitter to produce and receive the signal of frequency band signals as the receiver calibration test, owing to have emission filter 111 on the transmission channel, so need before transmitter output filtering, this signal to be introduced into receiver inlet, this test signal coupling unit energy is to power-sensing circuit 115, to guarantee the accurate of its calibration simultaneously.As shown in Figure 3, the receiver test reference signal produces required reception frequency range local oscillation signal by MCU (controller) 108 control phase-locked loop circuits 117, produce the acceptance test reference signal by frequency mixer 114, amplify the back through amplifier 113 and switch to the acceptance test passage by radio-frequency (RF) switch 112, this test reference signal carries out power detection by coupler 116 simultaneously, detection power obtains the ADC (analog digital converter) that magnitude of voltage is sent to controller 108, and the conversion back obtains its corresponding performance number by tabling look-up.Radio-frequency (RF) switch 102 switches to the acceptance test passage, makes the receiver that can enter portable terminal with reference to test signal.This reference signal enters controller 108 after having passed through to comprise reception link device by duplexer 103, LNA 104, filter 105, amplifier 106, frequency mixer 107 etc., calculates the signal power value that receives by controller 108.Reference signal power that controller 108 obtains by power detection relatively and the signal power that receives, we can obtain the receiver gain value of this portable terminal.For the different conditions of receiver, can test accordingly and can obtain by the state of devices such as controller 108 change LNA 104, amplifier 106.
Below, with reference to Fig. 4, Fig. 5 and Fig. 6 another aspect of the present invention is described.Fig. 4 is according to the self-correcting of portable terminal of the present invention or the general flowchart of self-testing method, and Fig. 5 is the particular flow sheet that portable terminal is realized self-correcting, and Fig. 6 is the particular flow sheet that the portable terminal realization is tested oneself.
As shown in Figure 4, the self-correcting of the portable terminal that the present invention relates to or self-testing method may further comprise the steps:
Step S402, portable terminal sends the self-correcting order or the order of testing oneself;
Step S404, mobile terminal configuration emission phase-locked loop circuit with generation acceptance test reference signal, and makes the acceptance test reference signal be connected to the acceptance test passage;
Step S406, power-sensing circuit carries out power detection by coupler to the acceptance test reference signal, and test result is reported controller;
Step S408, controller receives the link gain value according to test result calculations; And
Step S410 will receive link gain value and predetermined threshold value and compare, and determine whether to finish self-correcting according to comparative result and handle or the processing of testing oneself.
In step S408, comprise following processing: controller calculates from receiving the performance number that link enters controller; Controller will carry out analog-to-digital conversion from the test result of power-sensing circuit simultaneously, and according to analog-to-digital result, look-up table is to obtain corresponding acceptance test reference signal power value; And compare by receiving performance number and the acceptance test reference signal power value that link enters controller, calculate and receive the link gain value.
Meet under the situation of predetermined threshold value in reception link gain value, to receive the link gain value is converted to the discernible form of controller and stores in the corresponding non-volatile value, report the self-correcting success message or the success message of testing oneself, and finish self-correcting and handle or the processing of testing oneself.
Under the situation of carrying out the self-correcting processing, do not meet under the situation of predetermined threshold value in reception link gain value, change the parameter of portable terminal, again self-correcting is handled, under the situation that meets threshold value in reception link gain value, report the self-correcting success message, or receive under the situation that the link gain value still do not meet threshold value up to pre-determined number and to report the self-correcting failed message, and finish self-correcting and handle.
In addition, do not meet under the situation of predetermined threshold value in reception link gain value, again the processing of testing oneself, under the situation that meets threshold value in reception link gain value, report the success message of testing oneself, or receive under the situation that the link gain value still do not meet threshold value up to pre-determined number and to report the failed message of testing oneself, and finish to test oneself processing.
As shown in Figure 5, the concrete steps of portable terminal self-correcting are as follows:
Step S502, portable terminal transmitter-receiver self-correcting order begins to carry out self-calibration procedure, and portable terminal is opened receiver channel, as receiving low noise amplifier, receiving variable gain amplifier etc.;
Step S504, mobile terminal configuration emission phase-locked loop circuit produces the acceptance test reference signal, and opens and receive the self-correcting passage radio-frequency (RF) switch of testing oneself;
Step S506, power-sensing circuit report acceptance test reference signal detection power magnitude of voltage;
Step S508, portable terminal Modem calculates received signal power, and in conjunction with the acceptance test reference signal power value of tabling look-up and obtaining, calculates and receive link gain;
Step S510 then converts it to the recognizable data format of mobile terminal controller as this yield value and stores corresponding N V value into, otherwise repeatedly tests in threshold range, repeatedly test still reports the calibration failed message after the failure, withdraws from self-calibration procedure; And
Step S512, other operating states of mobile terminal controller change receiver are carried out the calibration of different conditions, finish self-calibration procedure.
As shown in Figure 6, the portable terminal concrete steps of testing oneself are as described below:
Step S602, the portable terminal transmitter-receiver order of testing oneself begins to carry out self-test procedure, and portable terminal is opened receiver channel, as receiving low noise amplifier, receiving variable gain amplifier etc.;
Step S604, mobile terminal configuration emission phase-locked loop circuit produces the acceptance test reference signal, and opens and receive the self-correcting passage radio-frequency (RF) switch of testing oneself;
Step S606, power-sensing circuit report acceptance test reference signal detection power magnitude of voltage;
Step S608, portable terminal Modem calculates received signal power, and in conjunction with the acceptance test reference signal power value of tabling look-up and obtaining, calculates and receive link gain;
Step S610 judges whether the gain of surveying meets the demands, and then repeatedly tests as not meeting the demands, and reports after test is still failed and tests oneself failure information and release self-test procedure; And
Step S612, other operating states of mobile terminal controller change receiver are carried out testing oneself of different conditions, finish self-test procedure.
In sum,, saved the calibration testing instrument that production process Central Plains is used, saved the calibration testing time, improved production test efficient, had RF calibration precision preferably simultaneously by the present invention.In addition because the function of testing oneself is provided, the validation test after making things convenient for portable terminal to dispatch from the factory.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. portable terminal with self-correcting and self-test function comprises it is characterized in that amplifier and filter, duplexer and the test bench of phase-locked loop circuit, emission path, also comprises:
First radio-frequency (RF) switch is connected between the amplifier and filter of described emission path, is used for the acceptance test reference signal is switched to the acceptance test passage;
Coupler is connected between described power-sensing circuit and described first radio-frequency (RF) switch, is used for described acceptance test reference signal is coupled to power-sensing circuit;
Described power-sensing circuit is used to detect the power of described acceptance test reference signal;
Second radio-frequency (RF) switch is connected between described test bench and the described duplexer, and is connected to described coupler, is used to make described acceptance test reference signal to enter the reception path; And
Controller, to compare by described reception path signal power that receives and the power that detects by described power-sensing circuit via described second radio-frequency (RF) switch, obtaining receiving the link gain value, and determine whether to finish self-correcting according to described reception link gain value and handle and/or the processing of testing oneself.
2. portable terminal according to claim 1, it is characterized in that, described controller is used for and will carries out analog-to-digital conversion by the detected described power of described power-sensing circuit, and according to described analog-to-digital result, tabling look-up obtains corresponding acceptance test reference signal power value.
3. portable terminal according to claim 1 is characterized in that, described controller compares described reception link gain value and threshold value, meets in described reception link gain value under the situation of requirement of described threshold value, reports the self-correcting/successful information of testing oneself.
4. portable terminal according to claim 1, it is characterized in that, under the situation of carrying out described self-correcting processing, described controller does not meet in described reception link gain value under the situation of requirement of described threshold value, change the parameter of described portable terminal, again described self-correcting is handled, under the situation that meets described threshold value in described reception link gain value, report the self-correcting success message, or still do not meet up to the described reception link gain of pre-determined number value under the situation of described threshold value and report the self-correcting failed message.
5. portable terminal according to claim 1, it is characterized in that, carrying out under the described situation about handling of testing oneself, described controller does not meet in described reception link gain value under the situation of requirement of described threshold value, again the described processing of testing oneself, under the situation that meets described threshold value in described reception link gain value, report the success message of testing oneself, or still do not meet up to the described reception link gain of pre-determined number value under the situation of described threshold value and report the failed message of testing oneself.
6. the self-correcting of a portable terminal or self-testing method is characterized in that, may further comprise the steps:
Step 1, described portable terminal sends the self-correcting order or the order of testing oneself;
Step 2, described mobile terminal configuration emission phase-locked loop circuit with generation acceptance test reference signal, and makes described acceptance test reference signal be connected to the acceptance test passage;
Step 3, described power-sensing circuit carries out power detection by described coupler to described acceptance test reference signal, and test result is reported controller;
Step 4, described controller receives the link gain value according to described test result calculations; And
Step 5 compares described reception link gain value and predetermined threshold value, determines whether to finish self-correcting according to comparative result and handles or the processing of testing oneself.
7. self-correcting/self-testing method according to claim 6 is characterized in that, in described step 4, comprises following processing:
Described controller calculates from receiving the performance number that link enters into described controller;
Described controller will carry out analog-to-digital conversion from the described test result of described power-sensing circuit, and according to described analog-to-digital result, look-up table is to obtain corresponding acceptance test reference signal power value; And
By comparing, calculate reception link gain value from receiving performance number and the described acceptance test reference signal power value that link enters controller.
8. self-correcting/self-testing method according to claim 6 is characterized in that,
Meet under the situation of described predetermined threshold value in described reception link gain value, described reception link gain value is converted to the discernible form of described controller and stores in the corresponding non-volatile value, report the self-correcting success message or the success message of testing oneself, and finish described self-correcting and handle or the described processing of testing oneself.
9. self-correcting/self-testing method according to claim 8 is characterized in that, under the situation of carrying out described self-correcting processing,
Do not meet under the situation of described predetermined threshold value in described reception link gain value, change the parameter of described portable terminal, again described self-correcting is handled, under the situation that meets described threshold value in described reception link gain value, report the self-correcting success message, or still do not meet up to the described reception link gain of pre-determined number value under the situation of described threshold value and report the self-correcting failed message, and finish described self-correcting and handle.
10. self-correcting/self-testing method according to claim 8 is characterized in that, carrying out under the described situation about handling of testing oneself,
Do not meet under the situation of described predetermined threshold value in described reception link gain value, again the described processing of testing oneself, under the situation that meets described threshold value in described reception link gain value, report the success message of testing oneself, or still do not meet up to the described reception link gain of pre-determined number value under the situation of described threshold value and report the failed message of testing oneself, and finish the described processing of testing oneself.
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| CN2007101376549A CN101090302B (en) | 2007-07-31 | 2007-07-31 | Self-correction and self-test method formobile terminal and mobile terminal with the method |
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