CN102740109B - Method, system and device for determining receiving sensitivity of terminal - Google Patents
Method, system and device for determining receiving sensitivity of terminal Download PDFInfo
- Publication number
- CN102740109B CN102740109B CN201110095244.9A CN201110095244A CN102740109B CN 102740109 B CN102740109 B CN 102740109B CN 201110095244 A CN201110095244 A CN 201110095244A CN 102740109 B CN102740109 B CN 102740109B
- Authority
- CN
- China
- Prior art keywords
- difference
- frame
- information source
- video
- transmitting power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a method, a system and a device for determining receiving sensitivity of a terminal. Main contents comprise the followings. Through completely automatic comparison and determination of signal qualities of a signal frame displayed by the terminal to be tested and a message source frame, in a condition that the terminal to be tested is not reconstructed, the method, the system and the device not only enable that a final determined result truly reflects actual experience of a user for service quality of a mobile TV business, overcome a problem that the determined result can not measure audio/video signal qualities the user feels caused by a bit error rate mode, but also can effectively eliminate personal errors of a testers' manual determining process, so that accuracy and fairness of the determined receiving sensitivity are improved.
Description
Technical field
The present invention relates to field of mobile phone, relate in particular to a kind of method, system and equipment of definite terminal receiving sensitivity.
Background technology
Receiving sensitivity is a kind of parameter of weighing terminal minimal detectable power, represent the minimal detectable power of terminal in the time that the index of the signal receiving reaches minimum threshold, that is to say, when the received power of terminal is during higher than the receiving sensitivity of this terminal, the terminal signal that correctly demodulation receives, when the received power of terminal is during lower than the receiving sensitivity of this terminal, the terminal signal that correctly demodulation receives.
Along with the development of cordless communication network, mobile phone TV services become the wireless traffic of main flow gradually, therefore, accurately determine that the receiving sensitivity of mobile phone TV terminal is the important technology that mobile phone TV services are carried out.At present, in international standard and industry standard, all the receiving sensitivity of mobile phone TV terminal is not determined and provided unification, effectively mode, the mode of the receiving sensitivity of definite mobile phone TV terminal that industry is commonly used is: the quality of observing the picture of mobile phone TV terminal displaying by tester is determined receiving sensitivity, the definite result of this mode can not reflect the real receiving sensitivity of mobile phone TV terminal well, this is because the mode that tester observes exists a large amount of destabilizing factors, the impression difference of different testers to image quality, even if same tester is at different time, result definite under varying environment also may be different, cause the definite receiving sensitivity of tester inaccurate.
In order to solve due to the inaccurate problem of tester's subjective determination result, industry also proposes a kind of mode of utilizing bit error rate to determine mobile phone TV terminal receiving sensitivity, receive the bit error rate of signal and indirectly evaluate the quality of the audio-video signal that mobile phone TV terminal receives by calculating mobile phone TV terminal, and then definite receiving sensitivity.But, utilize bit error rate to determine that the mode of mobile phone TV terminal receiving sensitivity exists the drawback of following two aspects:
On the one hand, bit error rate is the ratio that occurs error code in signals transmission, it is the index of gauge signal transmission accuracy, be there is not to linear relationship in the impression of audio-video signal quality with user, utilize the definite receiving sensitivity of bit error rate can not weigh objective, exactly user and experience the audio-video signal quality that mobile phone TV terminal is play.
For example, for bit error rate is identical but two sections of audio-video signals that content is different, user may have different feeling to two sections of audio-video signals in picture and sound quality; Again for example, identical for bit error rate, but same section of different audio-video signal of the position that error code occurs in signal also can make the different feeling of user in picture and sound quality.
On the other hand, the computing formula of bit error rate is: bit error rate=(total bit number of the errored bit number/signal transmission in signal transmission) × 100%, errored bit number is by the number of signals of information source transmission and mobile phone TV terminal receives and the number of signals contrast of demodulation obtains.And mobile phone TV services are a kind of descending single work broadcasting services, information source is after mobile phone TV terminal downlink transfer audio-video signal, do not require that mobile phone TV terminal reports the parameters such as the error rate that obtains after its signal content receiving or demodulation, therefore mobile phone TV terminal inside chip does not have the ability of output bit number.In order to calculate bit error rate, need to transform mobile phone TV terminal, configure wireless or wired data transfer component, before the audio-video signal receiving is converted to image and voice output by mobile phone TV terminal, export the parameter after adaptation processing to outside Bit Error Rate Computation equipment by external terminal, and then the number of signals of the number of signals being sent according to information source by Bit Error Rate Computation equipment and mobile phone TV terminal transmission is calculated bit error rate.
In sum, determine at present in the mode of receiving sensitivity of terminal, also exist definite receiving sensitivity inaccurate and need to carry out a large amount of transformations to terminal and cause scheme to be difficult to the problems that realize.
Summary of the invention
The embodiment of the present invention provides a kind of method, system and equipment of definite terminal receiving sensitivity, exists receiving sensitivity inaccurate and need to carry out a large amount of transformations to terminal and cause scheme to be difficult to the problems that realize in order to solve in prior art.
A method for definite terminal receiving sensitivity, described method comprises:
Determine that measured terminal is to the first difference to set the signal quality of the frame exported and information source frame after the information source frame demodulation that transmitting power sends;
Reduce gradually transmitting power, determine respectively the second difference of the signal quality of the frame exported after measured terminal is to the information source frame demodulation at every turn sending with the transmitting power after reducing and information source frame;
According to reaching transmitting power corresponding to the second difference of first threshold with the difference of the first difference, determine the receiving sensitivity of measured terminal.
An equipment for definite terminal receiving sensitivity, described equipment comprises:
Information source module, for storing information source frame;
Signal generator, for sending information source frame to set transmitting power, and sends the transmitting power of information source frame according to the instruction adjustment of control module;
Analysis module, for determining that measured terminal is to the first difference to set the signal quality of the frame exported and information source frame after the information source frame demodulation that transmitting power sends, and determine respectively in the time reducing transmitting power gradually, the second difference of the frame that measured terminal is exported after to the information source frame demodulation at every turn sending with the transmitting power after reducing and the signal quality of information source frame, and the first difference and each the second difference of determining are sent to control module;
Control module, for in the time receiving the first difference, pointing signal generator reduces transmitting power, and in the time receiving the second difference at every turn, whether judgement reaches first threshold with the difference of the first difference, if so, according to reaching transmitting power corresponding to the second difference of first threshold with the difference of the first difference, determine the receiving sensitivity of measured terminal; Otherwise pointing signal generator continues to reduce transmitting power.
A system for definite terminal receiving sensitivity, described system comprises:
Information source module, for storing information source frame;
Signal generator, for sending information source frame to set transmitting power, and sends the transmitting power of information source frame according to the instruction adjustment of control module;
Measured terminal, for exporting after the information source frame demodulation that signal generator is sent;
Analysis module, for determining that measured terminal is to the first difference to set the signal quality of the frame exported and information source frame after the information source frame demodulation that transmitting power sends, and determine respectively in the time reducing transmitting power gradually, the second difference of the frame that measured terminal is exported after to the information source frame demodulation at every turn sending with the transmitting power after reducing and the signal quality of information source frame, and the first difference and each the second difference of determining are sent to control module;
Control module, for in the time receiving the first difference, pointing signal generator reduces transmitting power, and in the time receiving the second difference at every turn, whether judgement reaches first threshold with the difference of the first difference, if so, according to reaching transmitting power corresponding to the second difference of first threshold with the difference of the first difference, determine the receiving sensitivity of measured terminal; Otherwise pointing signal generator continues to reduce transmitting power.
Beneficial effect of the present invention is as follows:
The embodiment of the present invention proposes a kind of scheme of receiving sensitivity of new definite terminal, by full-automation measured terminal play signal frame and information source frame are carried out to comparison and the judgement of signal quality, in the situation that measured terminal not being transformed, make final definite result can reflect truly the actual impression of user to mobile TV quality of service quality, overcome bit error rate mode and cause determining that result can not weigh the problem of the audio-video signal quality that user experiences, simultaneously, can effectively eliminate again the human error by the artificial decision process of tester, further improve accuracy and the fairness of definite receiving sensitivity.
Brief description of the drawings
Fig. 1 (a), Fig. 1 (b) and Fig. 1 (c) are the system architecture schematic diagram of the embodiment of the present invention one;
Fig. 2 is the method step schematic diagram of determining terminal receiving sensitivity in the embodiment of the present invention two.
Embodiment
In order to realize the object of the invention, the embodiment of the present invention proposes a kind of scheme of receiving sensitivity of new definite terminal, by full-automation to measured terminal play audio/video frames and information source audio/video frames carry out comparison and the judgement of signal quality, in the situation that measured terminal not being transformed, make final definite result not only can reflect truly the actual impression of user to mobile TV quality of service quality, overcome bit error rate mode and cause determining that result can not weigh the problem of the audio-video signal quality that user experiences, simultaneously, can effectively eliminate again the human error by the artificial decision process of tester, further improve accuracy and the fairness of definite receiving sensitivity.
Measured terminal related in the embodiment of the present invention refers to: can receive the sound, the vision signal that send according to certain transmitting power, and to exporting the terminal of playing after the sound receiving, vision signal demodulation, measured terminal has its intrinsic receiving sensitivity, the signal that measured terminal only just may correctly receive in the time that received power is not less than this receiving sensitivity, demodulation receives.Particularly, measured terminal can be mobile phone TV terminal.
The information source sound relating in the embodiment of the present invention, vision signal refers to: film source of giving measured terminal to be sent, information source sound, the sound of vision signal and measured terminal output, there is the difference of signal quality in vision signal, this is because information source sound, vision signal will be sent to measured terminal according to certain transmitting power by signal generator, sound, in transmitting procedure, there is the decay of signal quality due to the difference of presently used transmitting power height and other transmission environments in the signal quality of vision signal, therefore, information source sound, the signal quality of vision signal is better than the sound of measured terminal output, the signal quality of vision signal.
The signal quality of the frame of video relating in the embodiment of the present invention, includes but not limited to that brightness, the color etc. of frame of video can represent the size of the parameters of frame of video quality; The signal quality of the audio frame relating in various embodiments of the present invention, includes but not limited to that voltage, the frequency etc. of audio frame can represent the size of the parameters of audio frame quality.
Below in conjunction with Figure of description, the embodiment of the present invention is described in detail.
Embodiment mono-:
As shown in Fig. 1 (a), Fig. 1 (b) and Fig. 1 (c), for the system architecture schematic diagram of the embodiment of the present invention one, the system architecture of the embodiment of the present invention one can be applied to the scheme of the discriminant criterion using vision signal as receiving sensitivity, also can be applied to the scheme of the discriminant criterion using audio signal as receiving sensitivity, can also be applied to vision signal and audio signal jointly as the scheme of the discriminant criterion of receiving sensitivity.
From Fig. 1 (a), can find out, the system of the embodiment of the present invention one mainly comprises following a few part:
Information source module 11, for depositing the information source frame (information source frame of video and/or information source audio frame) being ready for sending to measured terminal, this information source frame sends to measured terminal 13 by signal generator 12 on the one hand, directly sends on the other hand analysis module 15.
Signal generator 12, can transmit the parameters (as the parameter of Signal coding aspect) of demand configurating mobile TV signal and the power parameter of radio frequency output according to signal, after parameters has configured, the information source frame of information source module 11 is generated to mobile TV radiofrequency signal, when initial, send information source frame according to setting transmitting power to measured terminal 13, and send the transmitting power of information source frame according to the instruction adjustment of control module 16.Signal generator 12 is in the time initially sending information source frame to measured terminal 13, no matter information source frame is audio sources frame or video source frame, the setting transmitting power using is identical.
Measured terminal 13, it (can be the higher transmitting power using first according to certain transmitting power that the mobile television function parts that utilization itself has receive signal generator 12, also can be the transmitting power reducing according to the instruction of control module) the information source frame that sends, and for example, to exporting after the information source frame demodulation receiving: will play by display and loud speaker after the audio-video signal demodulation receiving.
Acquisition module 14, gathers for the frame (frame of video and/or audio frame) of in real time measured terminal 13 being exported, and each frame gathering is sent to analysis module 15.
Analysis module 15, be used for receiving two aspect data, the information source frame that information source module 11 sends to analysis module 15 on the one hand, analysis module 15 can analyze according to the information source frame receiving the signal quality of information source frame, on the other hand, analysis module 15 receives the frame of being exported by measured terminal 13 that acquisition module 14 sends, and the signal quality of the frame that measured terminal 13 is exported is analyzed.The signal quality of analysis module 15 frame that also signal quality to information source frame and measured terminal 13 are exported is compared, is marked, and concrete scoring comprises two aspects:
On the one hand, determine the first difference of measured terminal signal quality to the frame of exporting after the information source frame demodulation to set transmitting power transmission and information source frame when initial.When initial, the information source frame that signal generator sends taking best transmitting power to measured terminal is " the information source frame sending to set transmitting power "; The opposing party, in the time that signal generator is controlled the instruction reduction transmitting power of module, analysis module also will be determined the second difference of the signal quality of the frame exported after measured terminal is to the information source frame demodulation at every turn sending with the transmitting power after reducing and information source frame, and the first difference and each the second difference of determining are sent to control module 16 as analysis result.
The first difference relating in various embodiments of the present invention refers to: when initial, to set signal quality poor of the frame exported and information source frame after the information source frame demodulation that transmitting power sends; The second difference refers to: in the time of a transmitting power of every reduction, the difference of the frame of exporting after the demodulation of information source frame and the signal quality of information source frame, if reduced transmitting power X time in the process of determining receiving sensitivity, can obtain X the second difference, a transmitting power corresponding to the second difference refers to: the in the situation that of this transmitting power, and the second difference obtaining.
Control module 16, be used for loading test script, the relevant information and the control analysis module 15 that in described test script, have comprised the transmitting power of control signal generator 12 are analyzed the relevant information judging, the analysis result that control module 16 sends according to analysis module 15, the control signal generator 12 that requires of setting according to test script is adjusted transmitting power, until finally determine the receiving sensitivity of measured terminal 13.
Particularly, in the time that control module 16 receives the first difference that analysis module 15 sends, represent that test starts, pointing signal generator reduces transmitting power.When signal generator continues to send after information source frame to measured terminal with the transmitting power after reducing, through acquisition module and analysis module, the second difference when control module 16 will receive transmitting power reduction, if the difference of this second difference and the first difference reaches first threshold, the transmitting power corresponding to the second difference that can receive according to this determined the receiving sensitivity of measured terminal; Otherwise pointing signal generator continues to reduce transmitting power, so circulation, until determine the receiving sensitivity of measured terminal.
More preferably, control module 16 specifically can comprise power determination submodule 21 and instruction submodule 22, wherein:
Power determination submodule 21 is in the time receiving the second difference at every turn, and whether judgement reaches Second Threshold with the difference of the first difference, and whether reaches first threshold, and described first threshold is greater than Second Threshold;
When instruction submodule 22 does not reach Second Threshold for the second difference of receiving at this with the difference of the first difference, pointing signal generator continues reduction transmitting power with the first stepped intervals; When the second difference receiving at this and the difference of the first difference reach Second Threshold but do not reach first threshold, pointing signal generator continues to reduce transmitting power with the second stepped intervals; When the second difference receiving at this and the difference of the first difference reach first threshold, the transmitting power corresponding to the second difference that can receive according to this determined the receiving sensitivity of measured terminal.Described the first stepped intervals is greater than the second stepped intervals.
Information source module 11, analysis module 15 and control module 16 in the system of the present embodiment one can be regarded as master controller, send the mode difference of information source frame according to signal generator to measured terminal, and the system architecture of the present embodiment one can have different distortion.
As shown in Fig. 1 (b), when signal generator is wired mode (as passed through transmit by RF cable) to the mode of measured terminal transmission information source frame, wired connection between signal generator and measured terminal, acquisition module can be camera and Mike.
As shown in Fig. 1 (c), when signal generator is wireless mode (as transmitted by radio magnetic wave) to the mode of measured terminal transmission information source frame, wireless connections between signal generator and measured terminal.Determine respectively the receiving sensitivity of measured terminal for multiple positions in three dimensions, measured terminal can be placed on turntable, for this turntable pre-configured corresponding test position, determine respectively the receiving sensitivity of measured terminal at each test position.After the receiving sensitivity of a position is determined, by the motion of turntable controller control turntable, continue to determine receiving sensitivity in next position.
The test position of turntable can be determined in the following manner: determine a spheroid region taking measured terminal as the centre of sphere, equidistantly get a little on the surface of this spheroid, the position at each some place is the pre-configured test position of turntable.
Utilize the system architecture shown in the embodiment of the present invention one, can realize the object of the invention, objective, to determine exactly measured terminal receiving sensitivity.Because the system architecture of the embodiment of the present invention one is the receiving sensitivity for determining measured terminal, information source module, signal generator, analysis module and the control module in the embodiment of the present invention one (more preferably can also have acquisition module) can be regarded as the subassembly of the equipment of determining terminal receiving sensitivity.
Embodiment bis-:
The embodiment of the present invention two is the methods that belong to the definite terminal receiving sensitivity under same inventive concept with embodiment mono-, and the discriminant criterion of the embodiment of the present invention two in using vision signal as Sensitivity determination process, as shown in Figure 2, said method comprising the steps of:
Step 101: send information source frame of video to measured terminal to set transmitting power.
A kind of specific implementation in this step is: in information source module, store sheet source file, and constantly to the information source frame of video in signal generator Transporting source file.Signal generator is set up transmissions links by wired mode or wireless mode and measured terminal, by signal generator, information source frame of video is converted to mobile TV vision signal, and by the transmissions links of setting up with measured terminal, send information source frame of video to set transmitting power to measured terminal.
Because the scheme of the embodiment of the present invention is by constantly reducing transmitting power, compare the signal quality under various different transmission power, assess the receiving sensitivity of measured terminal with the quality of signal quality, therefore, in the scheme of this step, when signal generator sends information source frame of video to measured terminal first, guarantee that measured terminal can receive, demodulation information source frame of video, described setting transmitting power is greater than also undetermined receiving sensitivity of measured terminal.Due to the receiving sensitivity difference of different measured terminals, and the receiving sensitivity of measured terminal does not also record in this step, therefore, in this step, signal generator sends information source frame of video with large as far as possible transmitting power to measured terminal, ensures that to the full extent measured terminal can receive, demodulation information source frame of video.
Step 102: the signal quality of determining the frame of video of exporting after measured terminal is to the information source frame of video demodulation sending with described setting transmitting power.
A kind of specific implementation of this step is: in step 101, signal generator sends after information source frame of video to measured terminal with initial setting transmitting power, measured terminal receives, this information source frame of video of demodulation, and by the information source frame of video output after demodulation, as shown the picture of information source frame of video by display, constantly gathered again the frame of video of measured terminal output by acquisition module, and frame of video is sent to analysis module, by analysis module analysis, determine the signal quality of the frame of video of measured terminal output.Described acquisition module can be the parts that the first-class frame of video that can correctly measured terminal be play of shooting collected and be transferred to analysis module.
Step 103: the signal quality of determining information source frame of video.
A kind of specific implementation of this step is: analysis module directly receives the information source frame of video that information source module sends, and analyzes, determines the signal quality of information source frame of video.
It should be noted that, the execution sequencing of the step 102 of the embodiment of the present invention and step 103 is unfixing, can first perform step 103 rear execution steps 102 yet, or by step 102 and step 103 executed in parallel.
Step 104: video the first difference of determining the frame of video of measured terminal output and the signal quality of information source frame of video.
If the signal quality of frame of video is to carry out Analysis deterrmination by brightness size and the color size (the RGB component intensity value obtaining according to rgb color mode standard) of frame of video in the present embodiment, a kind of specific implementation of this step is: analysis module is determined brightness and the color of the frame of video of measured terminal output, and the brightness of definite information source frame of video and color, obtain difference and the color difference of the frame of video of measured terminal output and the brightness of information source frame of video, and using the difference of the brightness obtaining and color difference as video the first difference, or using the value after the difference of brightness and the weighted sum of color difference as video the first difference.
Distinguishingly, if the content complexity, the details that comprise in the frame of video of measured terminal output and information source frame of video are more, in this step, can first frame of video and the information source frame of video of measured terminal output be divided by identical mode, carry out the difference computing of brightness and color to dividing the every sub regions obtaining respectively, and then by the operation result weighted sum of every sub regions, obtain a frame of video of measured terminal output and video first difference of an information source frame of video.
Because video the first difference is that the signal quality of the frame of video exported and information source frame of video is determined after the information source frame of video demodulation sending with initial setting transmitting power, the maximum transmitting power using while sending information source frame of video and set transmitting power when initial, necessarily be greater than the receiving sensitivity of measured terminal, therefore, the frame of video of measured terminal output is the best frame of video of signal quality.
It should be noted that, analysis module is before calculating video the first difference, and the frame of video that need to export to the information source frame of video from information source module with from the measured terminal of acquisition module is carried out synchronously, and the synchronizing process in the present embodiment comprises two kinds of situations:
The first synchronizing process is time synchronized:
Although analysis module receives from the information source frame of video of information source module with from the frame of video of acquisition module simultaneously, but the frame of video sending due to acquisition module is that information source frame of video sends to measured terminal by signal generator, exported by measured terminal demodulation, the same frame that information source module is sent has time delay while being sent to analysis module by acquisition module again.Found through experiments, the interval that information source module sends frame of video is approximately 40ms, a frame of video arrives the situation of analysis module by signal generator, measured terminal, acquisition module from information source module, postpone 1ms left and right than directly arrive analysis module from information source module, in order to overcome the delay of this 1ms, analysis module postpones the frame of video receiving to be processed, guarantee that analysis module is in the time analyzing, process the frame of video receiving, two frame of video of analysis are the frame of video that content is identical.
For example, information source module started to send frame of video to analysis module and signal generator from the T0 moment, sent the 40ms that is spaced apart of adjacent two frame of video, and frame of video, after signal generator, equipment under test, acquisition module, exists the time delay of 1ms.Analysis module, from the T1 moment afterwards, is analyzed two frame of video that receive taking 40ms as the cycle, and the interval in described T1 moment and T0 moment is greater than 1ms, and is less than 40ms.If T1 moment and T0 moment be spaced apart 5ms, represent that analysis module is receiving after the information source frame of video of information source module transmission, do not process immediately, after 1ms, again receive the frame of video from acquisition module, now still do not process, after the T1 moment arrives, just current two frame of video that receive are processed, two frame of video that arrive while guaranteeing difference can analyzed module be processed simultaneously.
The second is synchronously content synchronization: analysis module can not receive respectively two frame of video that sent by information source module and acquisition module in the same time, and whether two frame of video that judgement receives are the same frames in information source module, if so, these two frame of video are carried out to analyzing and processing.
Step 105: reduce gradually transmitting power.
A kind of specific implementation of this step is: analysis module after analysis result sends to control module, represents that the synchronizing process before test finishes using video definite step 104 the first difference, starts test.Frequency in control module read test script reduces interval, and trigger signal generator, require signal generator to reduce gradually transmitting power according to the triggering of control module, and reduce after transmitting power each, continue to send information source frame of video to measured terminal with the transmitting power after reducing.
Step 106: video the second difference of determining the signal quality of the frame of video exported and information source frame of video after the information source frame of video demodulation that measured terminal sends the transmitting power after reducing.
A kind of specific implementation of this step is: signal trigger continues to send information source frame of video with the transmitting power after reducing to measured terminal after transmitting power is reduced, and after measured terminal receives, this frame of video is exported in demodulation.Acquisition module collects the frame of video of current measured terminal output, and sends to analysis module.Analysis module is compared to the signal quality of frame of video and the signal quality of information source frame of video of current measured terminal output, obtains video the second difference, and this video second difference is sent to control module.
In the scheme of this step, analysis module can be determined from the information source frame of video of information source module with from the information source frame of acquisition module according to synchronizing process in step 104, and then calculate video second difference of signal quality.
Step 107: judge that whether video the second difference that this obtains and the difference of video the first difference reach first threshold, if so, perform step 108; Otherwise, jump to step 105.
A kind of specific implementation of this step is: control module compares video the first difference obtaining in the video receiving in step 106 the second difference and step 104, whether the difference that judges these two values reaches first threshold, if reach, represent degree that current transmit power reduces to measured terminal correctly receive, demodulated video frame causes harmful effect, arrives that measured terminal can correctly receive, the critical value of demodulated video frame; Otherwise, represent that current transmitting power can also meet the demand of measured terminal reception, demodulated video frame preferably, also do not reach critical value, so jump to step 105, continue to reduce transmitting power, and circulation execution step 106 and step 107, until determine the transmitting power that allows measured terminal reception, demodulated video frame reach critical value.
The process of the reduction transmitting power of this step can reduce transmitting power by setting the first larger stepped intervals and the second less stepped intervals, and concrete scheme is:
The first step, reduces transmitting power with the first stepped intervals, and determines that this is reducing the second difference obtaining after transmitting power.
Second step, determines whether the second difference that this obtains and the difference of the first difference reach Second Threshold, and whether reaches first threshold, described first threshold is greater than Second Threshold.
The 3rd step, when the second difference obtaining and the difference of the first difference do not reach Second Threshold, jumps to the first step at this, continues to reduce transmitting power with the first stepped intervals;
When the second difference obtaining at this and the difference of the first difference reach Second Threshold but do not reach first threshold, continue to reduce transmitting power with the second stepped intervals, and jump to second step;
When the second difference obtaining at this and the difference of the first difference reach first threshold, determine transmitting power corresponding to the second difference that this obtains.
Suppose that the first difference is X, the transmitting power of initial setting is-80dB, and the first stepping is spaced apart 5dB, and the second stepping is spaced apart 0.5dB.
Determine when transmitting power to be-video the second difference Y1 of obtaining when 85dB, if (Y1-X) do not reach Second Threshold, transmitting power is reduced to-90dB, and definitely when transmitting power be-video the second difference Y2 of obtaining when 90dB.If (Y2-X) reach Second Threshold but do not reach first threshold, transmitting power is reduced to-90.5dB, and determines when transmitting power and be-video the second difference Y3 of obtaining when 90.5dB.If (Y3-X) reach first threshold, record current transmitting power-90.5dB, further determine the receiving sensitivity of measured terminal according to-90.5dB; Otherwise, continuing taking transmitting power as-91dB is as condition, cycle criterion, until the receiving sensitivity of definite measured terminal.
In the scheme of the present embodiment, first carry out fast reducing transmitting power with the first stepped intervals of coarseness, can effectively reduce the number of times that reduces transmitting power, raise the efficiency; In addition, further reduce transmitting power by fine-grained the second stepped intervals, can make transmitting power being reduced to while approaching critical value, reduce test error, obtain efficiently, receiving sensitivity fast, accurately.
Second Threshold in this step represents the thresholding of " quality of the frame of video of measured terminal output is enough good ", and first threshold represents the thresholding of " the mass-basis response user impression of the frame of video of measured terminal output ".If the difference of video the second difference and video the first difference does not reach Second Threshold, represent the receiving sensitivity of current transmitting power far above measured terminal, can continue to reduce transmitting power with the first larger stepped intervals; If the difference of video the second difference and video the first difference is between first threshold and Second Threshold, although represent that current transmitting power is still higher than the receiving sensitivity of measured terminal, but approach the receiving sensitivity of measured terminal, should not reduce transmitting power with the first stepping unit of being spaced apart, but should be that fine-grained the second stepping unit of being spaced apart reduces transmitting power; If the difference of video the second difference and video the first difference reaches first threshold, represent now to have reached the minimum threshold of measured terminal received power.
Step 108: will reach the receiving sensitivity of transmitting power corresponding to video second difference of first threshold as measured terminal with the difference of video the first difference.
A kind of specific implementation of this step is: control module is determined and the difference of video the first difference reaches after video second difference of first threshold, determines the transmitting power using while obtaining this video second difference.While sending information source frame of video with this transmitting power to measured terminal due to signal generator, reach the critical value of measured terminal reception, demodulated video frame, therefore, the minimal detectable power that this transmitting power of determining is measured terminal, the i.e. receiving sensitivity of measured terminal.
More preferably, consider that the connection that signal generator passes through to set up sends information source frame of video with certain transmitting power to measured terminal, there is certain power loss in transmitting power therefore on link.If this power loss is less, directly will not have obvious error as receiving sensitivity to reach transmitting power corresponding to video second difference of first threshold with the difference of video the first difference yet, but in order to make the precision of final definite receiving sensitivity high as much as possible, the embodiment of the present invention can be using the transmitting power after link compensation as measured terminal receiving sensitivity, namely deduct power after the power loss receiving sensitivity as measured terminal using reaching transmitting power corresponding to video second difference of first threshold with the difference of video the first difference.
It should be noted that, the mode that signal generator sends information source frame of video to measured terminal can comprise wired (radio frequency cable) mode and wireless (radio magnetic wave) mode.If signal generator sends information source frame of video with wireless mode to measured terminal, need multiple positions in three dimensions to determine respectively the receiving sensitivity of measured terminal, the transmitting power that each position is obtained is carried out weighted sum again after link compensation, obtains the receiving sensitivity of measured terminal under three dimensions.
By the scheme of the embodiment of the present invention two, taking vision signal as judging index, under unified management, realize full-automatic definite receiving sensitivity in control module, without measured terminal is carried out to any transformation, can weigh objective, exactly the signal reception of mobile phone TV terminal, find the receiving sensitivity of mobile phone TV terminal.The parameter (comprising brightness, the color of image) of the scheme selection vision signal of the embodiment of the present invention two is as the investigation index in the deterministic process of mobile phone TV terminal receiving sensitivity, not only follow the actual impression of user to video quality quality, can effectively eliminate again human error, improve fairness and the accuracy of result.In addition, the scheme computing of the embodiment of the present invention two is simple, in conjunction with processing, has both improved operation efficiency with the first stepped intervals of coarseness and fine-grained the second stepped intervals, has reduced again error.
Embodiment tri-:
The discriminant criterion of the embodiment of the present invention three in using audio signal as Sensitivity determination process, determines the scheme of terminal receiving sensitivity, and the scheme of the scheme of the embodiment of the present invention three and embodiment bis-is basic identical, and difference is following 2 points:
1, the frame using in embodiment tri-is audio frame, and the information source frame of information source module output is information source audio frame, and what after measured terminal demodulation, export is audio frame.Acquisition module is that Mike waits the equipment that can correctly gather audio frame.
2,, when the audio frame that analysis module is exported measured terminal and the signal quality of information source audio frame are analyzed, be to carry out Analysis deterrmination with the voltage of audio frame and the height of frequency.Particularly, analysis module obtains difference and the frequency-splitting of the audio frame of measured terminal output and the voltage of information source audio frame, and using the difference of the difference of the voltage obtaining and frequency as audio frequency the first difference, or using the difference after the difference weighted sum of the difference of voltage and frequency as audio frequency the first difference.
Embodiment tetra-:
The embodiment of the present invention four discriminant criterion in simultaneously using vision signal and audio signal as Sensitivity determination process, determine the scheme of terminal receiving sensitivity, the scheme of the scheme of the embodiment of the present invention four and embodiment bis-and enforcement three is basic identical, institute's difference is, due to the discriminant criterion in simultaneously using vision signal and audio signal as Sensitivity determination process in embodiment tetra-, therefore the information source frame of information source module output comprises audio frame and frame of video, and what after measured terminal demodulation, export is frame of video and audio frame.
The present embodiment four is slightly different from embodiment bis-and embodiment tri-in the time calculating the first difference, the second difference.
In the scheme of the present embodiment four, method according to embodiment bis-is determined video reference frame, and determine after audioref frame according to the method for embodiment tri-, can determine the first difference according to video the first difference and audio frequency the first difference, be specifically as follows: video the first difference and audio frequency the first difference weighted sum be obtained to the first difference for subsequent use.
Reduce gradually transmitting power, and determine video the second difference according to the method for implementing two, and determine audio frequency the second difference according to the method for implementing three, and then determine the second difference according to definite video the second difference and audio frequency the second difference when the equal transmit power, be specifically as follows: definite video the second difference and audio frequency the second difference weighted sum when the equal transmit power obtained to the second difference.
The first difference can be regarded as the second difference obtaining first, the special circumstances of the second difference, therefore, in the time that weighted sum obtains the first difference and the second difference, video the first difference is identical with the weighting weight that video the second difference is used, and audio frequency the first difference is identical with the weighting weight that audio frequency the second difference is used.
Same, the present embodiment four also can be determined according to the mode of embodiment bis-receiving sensitivity of measured terminal in conjunction with the first stepped intervals and the second stepped intervals.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (9)
1. a method for definite terminal receiving sensitivity, is characterized in that, described method comprises:
Determine that measured terminal is to the first difference to set the signal quality of the frame exported and information source frame after the information source frame demodulation that transmitting power sends, wherein, described information source frame is information source frame of video and/or information source audio frame, and in the time that information source frame is information source frame of video, what after measured terminal demodulation, export is frame of video; In the time that information source frame is information source audio frame, what after measured terminal demodulation, export is audio frame; In the time that information source frame is information source frame of video and information source audio frame, what after measured terminal demodulation, export is frame of video and audio frame; And, the frame of video of measured terminal output and the signal quality of information source frame of video are to carry out Analysis deterrmination by brightness size and the color size of frame of video, and the audio frame of measured terminal output and the signal quality of information source audio frame are to carry out Analysis deterrmination by the voltage of audio frame and the height of frequency;
Reduce gradually transmitting power, reduce after transmitting power each, determine the second difference of the signal quality of the frame exported after measured terminal is to the information source frame demodulation sending and information source frame;
Determine the second difference that reaches first threshold with the difference of the first difference, and transmitting power corresponding to the second difference of determining, and according to this transmitting power, determine the receiving sensitivity of measured terminal.
2. the method for claim 1, is characterized in that, determines the first difference of the frame of measured terminal output and the signal quality of information source frame, specifically comprises:
The first difference of the signal quality of the same frame of determining information source module output in the time that measured terminal export and when information source module exports;
The second difference of determining the frame of measured terminal output and the signal quality of information source frame, specifically comprises:
The second difference of the signal quality of the same frame of determining information source module output in the time that measured terminal export and when information source module exports.
3. the method for claim 1, is characterized in that, described reduce transmitting power gradually after, and before the receiving sensitivity of definite measured terminal, described method also comprises:
Reduce after transmitting power each, determine whether this reaches Second Threshold reducing the second difference of obtaining after transmitting power and the difference of the first difference, and whether reach first threshold, described first threshold is greater than Second Threshold;
When the second difference obtaining at this and the difference of the first difference do not reach Second Threshold, continue to reduce transmitting power with the first stepped intervals;
When the second difference obtaining at this and the difference of the first difference reach Second Threshold but do not reach first threshold, continue to reduce transmitting power with the second stepped intervals, the first stepped intervals is greater than the second stepped intervals;
When the second difference obtaining at this and the difference of the first difference reach first threshold, determine transmitting power corresponding to the second difference that this obtains.
4. the method as described in as arbitrary in claim 1～3, is characterized in that, according to reaching transmitting power corresponding to the second difference of first threshold with the difference of the first difference, determines the receiving sensitivity of measured terminal, specifically comprises:
Described and the difference of the first difference are reached to the transmitting power corresponding to the second difference of first threshold, deduct while sending information source frame to measured terminal the power after the power loss on link as the receiving sensitivity of measured terminal.
5. the method for claim 1, is characterized in that, in the time that information source frame is information source frame of video and information source audio frame, described the first difference is determined in the following manner:
Determine measured terminal to audio frequency the first difference to set the signal quality of the audio frame exported and information source audio frame after the information source audio frame demodulation that transmitting power sends, measured terminal video the first difference to the signal quality to set the frame of video exported after the information source frame of video demodulation that transmitting power sends and information source frame of video, and determine the first difference according to described video the first difference and audio frequency the first difference;
Described the second difference is determined in the following manner:
Reduce gradually transmitting power, determine respectively audio frequency second difference of the signal quality of the audio frame exported after measured terminal is to the information source audio frame demodulation at every turn sending with the transmitting power after reducing and information source audio frame, and video second difference of the signal quality of the frame of video exported after to the information source frame of video demodulation at every turn sending with the transmitting power after reducing of measured terminal and information source frame of video, and determine the second difference according to definite video the second difference and audio frequency the second difference when the equal transmit power.
6. method as claimed in claim 5, is characterized in that, determines the first difference according to described video the first difference and audio frequency the first difference, specifically comprises:
Described video the first difference and audio frequency the first difference weighted sum are obtained to the first difference;
Determine the second difference according to definite video the second difference and audio frequency the second difference when the equal transmit power, specifically comprise:
Definite video the second difference and audio frequency the second difference weighted sum when the equal transmit power obtained to the second difference.
7. an equipment for definite terminal receiving sensitivity, is characterized in that, described equipment comprises:
Information source module, for storing information source frame;
Signal generator, for sending information source frame to set transmitting power, and sends the transmitting power of information source frame according to the instruction adjustment of control module;
Analysis module, for determining that measured terminal is to the first difference to set the signal quality of the frame exported and information source frame after the information source frame demodulation that transmitting power sends, and determine respectively in the time reducing transmitting power gradually, the second difference of the frame that measured terminal is exported after to the information source frame demodulation at every turn sending with the transmitting power after reducing and the signal quality of information source frame, and the first difference and each the second difference of determining are sent to control module;
Control module, for in the time receiving the first difference, pointing signal generator reduces transmitting power, and in the time receiving the second difference at every turn, whether judgement reaches first threshold with the difference of the first difference, if so, according to reaching transmitting power corresponding to the second difference of first threshold with the difference of the first difference, determine the receiving sensitivity of measured terminal; Otherwise pointing signal generator continues to reduce transmitting power;
Wherein, described information source frame is information source frame of video and/or information source audio frame, and in the time that information source frame is information source frame of video, what after measured terminal demodulation, export is frame of video; In the time that information source frame is information source audio frame, what after measured terminal demodulation, export is audio frame; In the time that information source frame is information source frame of video and information source audio frame, what after measured terminal demodulation, export is frame of video and audio frame; And, the frame of video of measured terminal output and the signal quality of information source frame of video are to carry out Analysis deterrmination by brightness size and the color size of frame of video, and the audio frame of measured terminal output and the signal quality of information source audio frame are to carry out Analysis deterrmination by the voltage of audio frame and the height of frequency.
8. equipment as claimed in claim 7, is characterized in that, described control module comprises:
Power determination submodule, in the time receiving the second difference at every turn, whether judgement reaches Second Threshold with the difference of the first difference, and whether reaches first threshold, and described first threshold is greater than Second Threshold;
Instruction submodule, while not reaching Second Threshold for the second difference of receiving at this with the difference of the first difference, pointing signal generator continues reduction transmitting power with the first stepped intervals; When the second difference receiving at this and the difference of the first difference reach Second Threshold but do not reach first threshold, pointing signal generator continues to reduce transmitting power with the second stepped intervals; When the second difference receiving at this and the difference of the first difference reach first threshold, according to reaching transmitting power corresponding to the second difference of first threshold with the difference of the first difference, determine the receiving sensitivity of measured terminal, described the first stepped intervals is greater than described the second stepped intervals.
9. a system for definite terminal receiving sensitivity, is characterized in that, described system comprises:
Information source module, for storing information source frame;
Signal generator, for sending information source frame to set transmitting power, and sends the transmitting power of information source frame according to the instruction adjustment of control module;
Measured terminal, for exporting after the information source frame demodulation that signal generator is sent;
Analysis module, for determining that measured terminal is to the first difference to set the signal quality of the frame exported and information source frame after the information source frame demodulation that transmitting power sends, and determine respectively in the time reducing transmitting power gradually, the second difference of the frame that measured terminal is exported after to the information source frame demodulation at every turn sending with the transmitting power after reducing and the signal quality of information source frame, and the first difference and each the second difference of determining are sent to control module;
Control module, for in the time receiving the first difference, pointing signal generator reduces transmitting power, and in the time receiving the second difference at every turn, whether judgement reaches first threshold with the difference of the first difference, if so, according to reaching transmitting power corresponding to the second difference of first threshold with the difference of the first difference, determine the receiving sensitivity of measured terminal; Otherwise pointing signal generator continues to reduce transmitting power;
Wherein, described information source frame is information source frame of video and/or information source audio frame, and in the time that information source frame is information source frame of video, what after measured terminal demodulation, export is frame of video; In the time that information source frame is information source audio frame, what after measured terminal demodulation, export is audio frame; In the time that information source frame is information source frame of video and information source audio frame, what after measured terminal demodulation, export is frame of video and audio frame; And, the frame of video of measured terminal output and the signal quality of information source frame of video are to carry out Analysis deterrmination by brightness size and the color size of frame of video, and the audio frame of measured terminal output and the signal quality of information source audio frame are to carry out Analysis deterrmination by the voltage of audio frame and the height of frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110095244.9A CN102740109B (en) | 2011-04-15 | 2011-04-15 | Method, system and device for determining receiving sensitivity of terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110095244.9A CN102740109B (en) | 2011-04-15 | 2011-04-15 | Method, system and device for determining receiving sensitivity of terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102740109A CN102740109A (en) | 2012-10-17 |
| CN102740109B true CN102740109B (en) | 2014-12-10 |
Family
ID=46994773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110095244.9A Active CN102740109B (en) | 2011-04-15 | 2011-04-15 | Method, system and device for determining receiving sensitivity of terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102740109B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103780273B (en) * | 2014-01-26 | 2016-03-02 | 深圳市金立通信设备有限公司 | A kind of method and terminal optimizing antenna receiving sensitivity |
| CN105704485B (en) * | 2016-02-02 | 2018-05-25 | 广州视源电子科技股份有限公司 | The performance parameter detection method and system of display device |
| CN108156453A (en) * | 2017-12-26 | 2018-06-12 | 国家新闻出版广电总局广播电视规划院 | Judge whether occur the determining method and device of failed point in receiver demodulating process |
| FR3077944B1 (en) | 2018-02-09 | 2021-03-05 | Continental Automotive France | METHOD OF DETECTION OF PORTABLE USER EQUIPMENT IN A PREDETERMINED AREA, INSIDE OR EXTERIOR OF A VEHICLE BY ULTRA HIGH FREQUENCY, DETECTION DEVICE AND ASSOCIATED USER EQUIPMENT |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1863019A (en) * | 2005-05-12 | 2006-11-15 | 日立通讯技术株式会社 | Radio access point testing apparatus and method of testing radio access point |
| CN101064572A (en) * | 2006-04-25 | 2007-10-31 | 华为技术有限公司 | Method, test tool and test system for testing sensitivity of terminal receiver |
| CN101511039A (en) * | 2009-02-25 | 2009-08-19 | 深圳创维数字技术股份有限公司 | Method and system for testing sensitivity of digital television acceptance terminal |
| CN101873185A (en) * | 2010-06-24 | 2010-10-27 | 惠州Tcl移动通信有限公司 | Sensitivity testing method, device and detection equipment of GSM (Global System for Mobile Communications) communication terminal |
| US7873339B2 (en) * | 2007-06-15 | 2011-01-18 | Research In Motion Limited | System for determining total isotropic sensitivity (TIS) using target received signal strength indicator (RSSI) value and related methods |
| CN101978749A (en) * | 2008-03-18 | 2011-02-16 | 艾色拉公司 | Processing digital samples in a wireless receiver |
-
2011
- 2011-04-15 CN CN201110095244.9A patent/CN102740109B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1863019A (en) * | 2005-05-12 | 2006-11-15 | 日立通讯技术株式会社 | Radio access point testing apparatus and method of testing radio access point |
| CN101064572A (en) * | 2006-04-25 | 2007-10-31 | 华为技术有限公司 | Method, test tool and test system for testing sensitivity of terminal receiver |
| US7873339B2 (en) * | 2007-06-15 | 2011-01-18 | Research In Motion Limited | System for determining total isotropic sensitivity (TIS) using target received signal strength indicator (RSSI) value and related methods |
| CN101978749A (en) * | 2008-03-18 | 2011-02-16 | 艾色拉公司 | Processing digital samples in a wireless receiver |
| CN101511039A (en) * | 2009-02-25 | 2009-08-19 | 深圳创维数字技术股份有限公司 | Method and system for testing sensitivity of digital television acceptance terminal |
| CN101873185A (en) * | 2010-06-24 | 2010-10-27 | 惠州Tcl移动通信有限公司 | Sensitivity testing method, device and detection equipment of GSM (Global System for Mobile Communications) communication terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102740109A (en) | 2012-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2661443C (en) | System, mobile communication unit and method for testing a receiver performance | |
| CN105376819B (en) | A kind of network formats switching method, device and terminal | |
| CN113346967B (en) | Satellite data transmission error rate index testing system and method | |
| CN102448083B (en) | A kind of radio communication voice quality assessment device, system and method | |
| WO2012030491A2 (en) | Method for testing wireless devices using predefined test segments initiated by over-the-air signal characteristics | |
| CN102740109B (en) | Method, system and device for determining receiving sensitivity of terminal | |
| CN104023229B (en) | Non-contact image system performance detection process and system | |
| EP2262134B1 (en) | System and method for testing a communcation device with an offline uplink fader | |
| CN104284098A (en) | Method and system for processing video data | |
| CN101009523B (en) | A device and method for automatic measurement of the mobile communication terminal demodulation performance | |
| US20100315430A1 (en) | Screen data transmitting terminal, screen data receiving terminal, screen data transmission system, screen data transmitting program, screen data receiving program, screen data transmitting method and screen data receiving method | |
| CN110708206A (en) | Method and equipment for measuring air interface time delay of base station | |
| CN103037239A (en) | System and method for testing receiving performance of digital video receiving terminal | |
| CN102332261B (en) | Audio end-to-end delay measuring method and device based on nonintrusive double-end collection | |
| CN112422370B (en) | Method and device for determining voice call quality | |
| CN202261341U (en) | Non-intrusive dual-end acquired audio end-to-end delay measuring device | |
| CN114785432A (en) | Electronic product testing method and system | |
| CN114448527A (en) | Wireless radio frequency interference test method and system for terminal | |
| CN106332139B (en) | Wireless access equipment detection method and system | |
| CN113613277A (en) | Method, device, equipment and storage medium for testing performance of Mesh system | |
| CN112073133A (en) | LoRa gateway, channel detection system and method | |
| CN113676273B (en) | Method, terminal and base station for acquiring signal-to-noise ratio of reference signal | |
| CN105430483B (en) | The mutual facies-controlled method and system of intelligent terminal | |
| CN111130949B (en) | Testing device, and WIFI wireless router testing method and system | |
| CN111698042A (en) | Vehicle-mounted communication network simulation test method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |