CN103209039A - Multi-bandwidth neighborhood radio frequency testing method, device and system - Google Patents
Multi-bandwidth neighborhood radio frequency testing method, device and system Download PDFInfo
- Publication number
- CN103209039A CN103209039A CN2013100926551A CN201310092655A CN103209039A CN 103209039 A CN103209039 A CN 103209039A CN 2013100926551 A CN2013100926551 A CN 2013100926551A CN 201310092655 A CN201310092655 A CN 201310092655A CN 103209039 A CN103209039 A CN 103209039A
- Authority
- CN
- China
- Prior art keywords
- bandwidth
- domain data
- frequency
- radio frequency
- signal
- 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.)
- Granted
Links
Images
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a multi-bandwidth neighborhood radio frequency testing method, device and system and aims at solving the problem of how to reduce multi-bandwidth neighborhood radio frequency testing complexity. The multi-bandwidth neighborhood radio frequency testing method includes that for neighborhood with different bandwidths, signals transmitted by a sampling rate collection terminal in the multi-bandwidth neighborhoods and having the largest bandwidth are uniformly used; for the neighborhood with different bandwidths, the collected signals are subjected to fast Fourier transformation (FFT) by aid of FFT points in the multi-bandwidth neighborhoods and having the largest bandwidth to obtain frequency domain data; and the frequency domain data are adopted to continue to perform terminal radio frequency testing. The multi-bandwidth neighborhood radio frequency testing method, device and system can greatly reduce achievement complexity, save testing cost, meet requirements of wide frequency spectrum measurement, and have the advantages of high accuracy, fast testing, operating easiness and the like.
Description
Technical field
The application relates to communication technical field, particularly relates to a kind of method, Apparatus and system of many bandwidth cell radio frequency testing.
Background technology
Flourish along with mobile communication, mobile Internet and intelligent terminal, increasing portable terminal is produced.For the safety that guarantees communication network and interconnect, all terminal equipments all must could go on the market through uniformity test.So-called uniformity test is exactly that Authentication devices realizes and the consistency of respective protocol standard that can inspection machine satisfy the uniform requirement of agreement, thereby carry out identical action under identical external condition, exports identical result.Terminal consistency test can guarantee that the terminal that different manufacturers is produced shows unanimity in network, and can interconnect, thereby guarantees operator and consumer's interests.
Uniformity test comprises RF consistency test, testing protocol consistency etc., and the RF consistency test comprises transmitter performance test and receiver performance test.Long Term Evolution (LTE, Long Term Evolution) technology is as accurate 4G standard, and the heat that is subjected to global operator is held in both hands, and supports the terminal equipment of LTE standard to emerge like the mushrooms after rain.One big characteristics of LTE standard are that it can set up the various bandwidth residential quarter, and operator can arrange the network of different bandwidth flexibly according to the Frequency Band Selection LTE that oneself obtains.In order to adapt to the network of many bandwidth, the LTE terminal must possess the ability of search many band width configuration residential quarter and the emission of multiband different bandwidth, therefore just need satisfy the scene of different bandwidth to the RF consistency test of LTE terminal, this has strengthened realization difficulty and the complexity of testing equipment undoubtedly, especially for the measurement of terminal spectral emission performance, the spectrum measurement width will be far longer than the interior emission spectrum of band of terminal, and measuring equipment must have very wide frequency spectrum receiving ability.
In traditional method of testing, for the measurement of different bandwidth, for example 10MHz, 5MHz system can corresponding reduction baseband sampling rate be 15.36MHz, 7.68MHz, constant in order to guarantee subcarrier spacing 15KHz, need be and 512 FFT respectively at 1024 to take out corresponding frequency domain data.Because sample rate has reduced, the highest frequency component that can be measured as can be known by the Nyquist law has also reduced, and the spectrum measurement scope narrows down, and causes satisfying the measurement bandwidth of regulation.And sample rate changed, and every subframe time domain data is counted and the sampled point time interval has also changed, like this in the radio frequency correction of carrying out doing before EVM measures, comprise timing error, frequency errors etc. must also will be done corresponding change, all will revise under the different bandwidth, have increased the processing complexity.
Summary of the invention
The application provides a kind of method, Apparatus and system of many bandwidth cell radio frequency testing, to solve the problem that how to reduce many bandwidth cell radio frequency testing complexity.
In order to address the above problem, the application discloses a kind of method of many bandwidth cell radio frequency testing, comprising:
At the residential quarter of different bandwidth, the unified signal that uses the sample rate acquisition terminal emission of maximum bandwidth in many bandwidth cell;
At the residential quarter of different bandwidth, the unified FFT that uses maximum bandwidth in many bandwidth cell counts and the described signal that collects is done fast Fourier FFT conversion obtains frequency domain data;
Use described frequency domain data to proceed the terminal radio frequency test.
Preferably, the sample rate of maximum bandwidth is to satisfy the minimum sample rate of maximum bandwidth demand in described many bandwidth cell, and described minimum sample rate multiply by the minimum FFT that satisfies the maximum bandwidth demand by subcarrier spacing counts and obtain.
Preferably, when terminal is the LTE terminal, when the maximum bandwidth in described many bandwidth cell was 20MHz, the sample rate of described maximum bandwidth was 30.72MHz, and this sample rate multiply by the minimum FFT that satisfies maximum bandwidth 20MHz demand by subcarrier spacing 15KHz counts and 2048 obtain.
Preferably, described terminal radio frequency test comprises following any one:
The frequency spectrum class is measured, the power class is measured and the signal quality class is measured.
Preferably, when radio frequency testing was measured for the frequency spectrum class, at the residential quarter of different bandwidth, to count be 8192 to the FFT of maximum bandwidth in unified many bandwidth cell of using;
When radio frequency testing is measured for the power class or signal quality class when measuring, at the residential quarter of different bandwidth, to count be 2048 to the FFT of maximum bandwidth in unified many bandwidth cell of using.
Preferably, the spectrum measurement width of same bandwidth cell basis signal is divided into basic, normal, high three residential quarters in described many bandwidth cell from the low frequency to the high-frequency average, and wherein middle residential quarter is service district;
The signal of described acquisition terminal emission comprises the signal of the terminal emission of gathering described basic, normal, high three residential quarters.
Preferably, when radio frequency testing is measured for the frequency spectrum class, the signal that collects is done fast Fourier FFT conversion obtains frequency domain data and comprise:
The signal that described three residential quarters collect is done fast Fourier transform respectively, obtain the frequency domain data of three residential quarters respectively;
The described frequency domain data of described use is proceeded the terminal radio frequency test and is comprised:
According to the order of spectrum measurement width from the low frequency to the high frequency frequency domain data of three residential quarters is spliced into the whole spectrum data;
Described the whole spectrum data are carried out index measurement, and determine the radio spectrum emitting performance of terminal according to the index that obtains.
Preferably, when described radio frequency testing is measured for the power class or signal quality class when measuring, the signal that collects is done fast Fourier FFT conversion obtains also comprising before the frequency domain data:
Dispose corresponding parameter according to different bandwidth of cell, from the described signal that collects, obtain the time domain data of service district;
Time domain data to described service district carries out the radio frequency correction.
Preferably, when described radio frequency testing is measured for the power class or signal quality class when measuring, the signal that collects is done fast Fourier FFT conversion obtains frequency domain data and comprise:
Time domain data after the correction of service district radio frequency is carried out fast Fourier transform, obtain the frequency domain data of service district;
The described frequency domain data of described use is proceeded the terminal radio frequency test and is comprised:
Dispose corresponding parameter according to different bandwidth of cell, from the frequency domain data of described service district, obtain the service district frequency domain data that needs;
Service district frequency domain data to described needs carries out Error Vector Magnitude EVM measurement, and determines radio-frequency power or the radiofrequency signal quality of terminal according to the EVM index that obtains.
Disclosed herein as well is a kind of device of many bandwidth cell radio frequency testing, comprise radio-frequency front-end and baseband processing unit,
Described radio-frequency front-end comprises acquisition module and sending module;
Described baseband processing unit comprises receiver module, FFT conversion module and processing module;
Wherein,
Acquisition module is used for the residential quarter at different bandwidth, the unified signal that uses the sample rate acquisition terminal emission of maximum bandwidth in many bandwidth cell;
Sending module is used for collecting signal and sends to baseband processing unit by the high-speed transfer link;
Receiver module is used for receiving the signal that described sending module sends;
The FFT conversion module is used for the residential quarter at different bandwidth, and the unified FFT that uses maximum bandwidth in many bandwidth cell counts and the described signal that collects is done fast Fourier FFT conversion obtains frequency domain data;
Processing module is used for using described frequency domain data to proceed the terminal radio frequency test.
Preferably, the sample rate of maximum bandwidth is to satisfy the minimum sample rate of maximum bandwidth demand in described many bandwidth cell, and described minimum sample rate multiply by the minimum FFT that satisfies the maximum bandwidth demand by subcarrier spacing counts and obtain.
Preferably, described terminal radio frequency test comprises following any one:
The frequency spectrum class is measured, the power class is measured and the signal quality class is measured.
Preferably, the spectrum measurement width of same bandwidth cell basis signal is divided into basic, normal, high three residential quarters in described many bandwidth cell from the low frequency to the high-frequency average, and wherein middle residential quarter is service district;
The signal of described acquisition module acquisition terminal emission comprises the signal of the terminal emission of gathering described basic, normal, high three residential quarters.
Preferably, when radio frequency testing is measured for the frequency spectrum class,
Described FFT conversion module is done fast Fourier transform respectively to the signal that described three residential quarters collect, and obtains the frequency domain data of three residential quarters respectively;
Described processing module comprises:
The splicing submodule is used for according to the order of spectrum measurement width from the low frequency to the high frequency frequency domain data of three residential quarters being spliced into the whole spectrum data;
Emitting performance is determined submodule, is used for described the whole spectrum data are carried out index measurement, and determines the radio spectrum emitting performance of terminal according to the index that obtains.
Preferably, measure for the power class or signal quality class when measuring when described radio frequency testing, also comprise:
Service district time domain data acquisition module is used for that the signal that collects is done fast Fourier FFT conversion and disposes corresponding parameter according to different bandwidth of cell before, obtains the time domain data of service district from the described signal that collects;
The radio frequency correction module is used for the time domain data of described service district is carried out the radio frequency correction.
Preferably, measure for the power class or signal quality class when measuring when described radio frequency testing, the time domain data after described FFT conversion module is proofreaied and correct the service district radio frequency carries out fast Fourier transform, obtains the frequency domain data of service district;
Described processing module comprises:
The service district frequency domain data obtains submodule, is used for disposing corresponding parameter according to different bandwidth of cell, obtains the service district frequency domain data that needs from the frequency domain data of described service district;
EVM measures submodule, is used for the service district frequency domain data of described needs is carried out Error Vector Magnitude EVM measurement, and determines radio-frequency power or the radiofrequency signal quality of terminal according to the EVM index that obtains.
Disclosed herein as well is a kind of system of many bandwidth cell radio frequency testing, comprising:
Terminal and base station simulator, described base station simulator comprises the device as any described many bandwidth cell radio frequency testing of claim 11 to 16.
Compared with prior art, the application comprises following advantage:
At first, the unified signal that uses the sample rate acquisition terminal emission of maximum bandwidth in many bandwidth cell of the application is realized 5MHz, 10MHz, and 15MHz, the frequency spectrum class of many bandwidth cell such as 20MHz is measured, the power class is measured and the signal quality class is measured.The application can greatly reduce the complexity that measure to realize, saves testing cost, and satisfies the demand that broad spectrum is measured, and has advantages such as precision height, test speed are fast, easy operating.
Secondly, the method that the application proposes is at the residential quarter of different system bandwidth, and sample rate keeps the sample rate of maximum bandwidth constant, guarantees that measurable scope is 72MHz, at 10MHz, is higher than the measurement demand during system bandwidths such as 5MHz far away.Simultaneously, only need the signal that collects is done the fast Fourier FFT conversion that the FFT of maximum bandwidth counts, need not dispose the FFT that difference is counted again, reduced the processing complexity.
And, when radio frequency testing is power class or the measurement of signal quality class, doing the signal RF timing, because sample rate is constant, sampling interval and time domain number of samples are constant, therefore radio frequency proofread and correct comprise regularly, frequency offset correction do not need to do any code and changes, the measurement update of different bandwidth can multiplexing same module, has realized that the height of module is multiplexing.
Simultaneously, it is traditional in signal EVM measures, for different sample rates, need get different FFT windows, do the FFT conversion that difference is counted, and the application is under the different bandwidth scene, all use unified baseband sampling rate, like this in EVM measures, the EVM under again can multiplexing 20MHz bandwidth scene handles computing module, use identical FFT window and do identical FFT conversion of counting, solved the difficult problem of many bandwidth radio-frequency tests very easily.
Description of drawings
Fig. 1 is the method flow diagram of a kind of many bandwidth cell radio frequency testing of the embodiment of the present application;
Fig. 2 is the method flow diagram that a kind of many bandwidth cell frequency spectrum of the embodiment of the present application class is measured;
Fig. 3 is the method flow diagram that a kind of many bandwidth cell power of the embodiment of the present application class is measured or class signal is measured;
Fig. 4 is the structured flowchart of a kind of many bandwidth cell radio frequency testing device of the embodiment of the present application;
The structured flowchart of radio frequency testing device when Fig. 5 is the measurement of the embodiment of the present application frequency spectrum class;
The structured flowchart of radio frequency testing device when Fig. 6 is the measurement of the embodiment of the present application power class or the measurement of signal quality class;
Fig. 7 is the structured flowchart of the system of a kind of many bandwidth cell radio frequency testing of the embodiment of the present application.
Embodiment
For above-mentioned purpose, the feature and advantage that make the application can become apparent more, below in conjunction with the drawings and specific embodiments the application is described in further detail.
Embodiment one:
With reference to Fig. 1, show the method flow diagram of a kind of many bandwidth cell radio frequency testing of present embodiment, present embodiment specifically can may further comprise the steps:
S101, at the residential quarter of different bandwidth, the unified signal that uses the sample rate acquisition terminal emission of maximum bandwidth in many bandwidth cell;
Use different sample rates when the residential quarter of different bandwidth is tested in the conventional method, as the sample rate of 10MHz system bandwidth use 15.36MHz, the 5MHz system bandwidth is used the sample rate of 7.68MHz.And present embodiment has overcome technology prejudice, do not adopt in the conventional method by reducing the measurement demand that sample rate satisfies different bandwidth, but the unified sample rate that adopts maximum bandwidth in many bandwidth cell, do like this and avoided different bandwidth adopts different sample rates to cause in the conventional method every subframe time domain data to count and the variation in the sampled point time interval, and sample rate changes in the conventional method, proofread and correct at the radio frequency that carries out doing before EVM measures, comprise timing error, frequency errors etc. must also be done corresponding change, all to revise under the different bandwidth, increase the processing complexity.
Therefore present embodiment is at the residential quarter of different bandwidth, sample rate keeps the sample rate 30.72MHz of maximum bandwidth 20MHz constant, make measurable spectral range be 72MHz to the maximum, when system bandwidths such as 5MHz, 10MHz, be higher than the measurement demand far away, the data that need collect are simultaneously only done 2048 FFT conversion and are got final product, need not dispose the FFT that difference is counted again, reduce the processing complexity.Doing the signal RF timing, because sample rate is constant, sampling interval and time domain number of samples are constant, so radio frequency proofreaies and correct and do not need to do any code and change, and the measurement update of different bandwidth can multiplexing same module, has realized that the height of software is multiplexing.In EVM measured, the EVM of present embodiment under again can multiplexing 20MHz bandwidth scene handled computing module, uses identical FFT window and does identical FFT conversion of counting, and solved the difficult problem that the many bandwidth radio-frequency of LTE system are tested very easily.
The sample rate of maximum bandwidth is to satisfy the minimum sample rate of maximum bandwidth demand in described many bandwidth cell, and described minimum sample rate multiply by the minimum FFT that satisfies the maximum bandwidth demand by subcarrier spacing counts and obtain.Suppose that maximum system bandwidth is 10MHz, subcarrier spacing is 15KHz, it is 1024 that the minimum FFT that satisfies the 10MHz bandwidth demand counts, and the minimum sample rate 15.36MHz that then satisfies the 10MHz bandwidth demand satisfies the 10MHz bandwidth demand for subcarrier spacing 15KHz multiply by minimum FFT counts and 1024 obtains.
The spectrum measurement width of same bandwidth cell basis signal is divided into basic, normal, high three residential quarters in the described many bandwidth cell of present embodiment from the low frequency to the high-frequency average, and wherein middle residential quarter is service district; For example, the spectrum measurement width is 72MHz, then the 0-24MHz bandwidth is divided into low residential quarter, and the 25MHz-48MHz bandwidth is divided into middle residential quarter, and the 49MHz-72MHz bandwidth is divided into high residential quarter, and wherein 25MHz-48MHz is service district.
The signal of the described acquisition terminal emission of present embodiment comprises the signal of the terminal emission of gathering described basic, normal, high three residential quarters.
S102, at the residential quarter of different bandwidth, the unified FFT that uses maximum bandwidth in many bandwidth cell counts and the described signal that collects is done fast Fourier FFT conversion obtains frequency domain data;
In order to guarantee that subcarrier spacing is constant, at the system of different bandwidth, need do the fast Fourier FFT conversion that different FFT count in the conventional method, be 15KHz as subcarrier spacing, the 10MHz system bandwidth, the 15.36MHz sample rate need be done 1024 FFT conversion; 5MHz system bandwidth and for example, the 7.68MHz sample rate need be done 512 FFT conversion.At the system of different bandwidth 5MHz, 10MHz, 20MHz, the unified FFT that uses maximum bandwidth 20MHz system counts and 2048 carries out the FFT conversion in the present embodiment.
S103 uses described frequency domain data to proceed the terminal radio frequency test.
The frequency domain data that employing S102 obtains is proceeded the terminal radio frequency test, and the described terminal radio frequency test of present embodiment comprises any in the measurement of frequency spectrum class, the measurement of power class and the measurement of signal quality class.
Embodiment two:
Known radio frequency testing comprises any in the measurement of frequency spectrum class, the measurement of power class and the measurement of signal quality class, when radio frequency testing is measured for the frequency spectrum class, with reference to Fig. 2, it is the method flow diagram that a kind of many bandwidth cell frequency spectrum of present embodiment class is measured, below with the LTE terminal, maximum bandwidth is 20MHz in many residential quarters, and subcarrier spacing is that the frequency spectrum class of 15KHz is measured as example and describes, and present embodiment specifically can may further comprise the steps:
S201, at the residential quarter of different bandwidth, the unified signal that uses the sample rate acquisition terminal emission of maximum bandwidth in many bandwidth cell;
For present embodiment, the unified signal that uses the sample rate 30.72MHz acquisition terminal emission of maximum bandwidth 20MHz in many bandwidth cell.
The sample rate of maximum bandwidth is to satisfy the minimum sample rate of maximum bandwidth demand in described many bandwidth cell, and described minimum sample rate multiply by the minimum FFT that satisfies the maximum bandwidth demand by subcarrier spacing counts and obtain.
In the present embodiment, the sample rate of maximum bandwidth is 30.72MHz, and this sample rate multiply by the minimum FFT that satisfies maximum bandwidth 20MHz demand by subcarrier spacing 15KHz counts and 2048 obtain.
The spectrum measurement width 72MHz of same bandwidth 20MHz residential quarter basis signal is divided into basic, normal, high three residential quarters in the described many bandwidth cell of present embodiment from the low frequency to the high-frequency average, frequency domain data 24MHz is gathered in each residential quarter, sample rate is 30.72MHz, and wherein middle residential quarter is service district; For base station simulator, select 100,000,000 IF boards and high-speed AD sampling A for use at radio-frequency front-end, 100,000,000 IF boards are set up 3 20MHz residential quarters, frequency domain data 24MHz is gathered in each residential quarter, sample rate is 30.72MHz, dispose 3 center frequency point at a distance of the 20MHz residential quarter of 24MHz, make the sampling frequency spectrum cover the continuous 72MHz bandwidth in service district center frequency point place.
The signal of the described acquisition terminal emission of present embodiment comprises the signal of the terminal emission of the 72MHz bandwidth of gathering described basic, normal, high three residential quarters.
S202, at the residential quarter of different bandwidth, the unified FFT that uses maximum bandwidth in many bandwidth cell counts and the described signal that collects is done fast Fourier FFT conversion obtains frequency domain data;
In the present embodiment, the FFT of unified use maximum bandwidth 20MHz residential quarter counts the signal that collects is done the FFT conversion, since present embodiment at be that the frequency spectrum class is measured, therefore in unified many bandwidth cell of using the FFT of maximum bandwidth 20MHz residential quarter to count be 8192.The frequency spectrum class is measured FFT and is counted that more high spectrum is more intensive, and when FFT counts when being 8192, the frequency spectrum effect is best, so present embodiment carrying out the frequency spectrum class when measuring, and it is 8192 that the FFT that selects for use counts.
The 72MHz signal that described three residential quarters collect is done the FFT conversion respectively, obtain the frequency domain data of three residential quarters respectively.
S203 uses described frequency domain data to proceed the terminal radio frequency test.
Present embodiment is measured at the frequency spectrum class, so S203 comprises following two steps:
S2031 is spliced into the whole spectrum data according to the order of spectrum measurement width from the low frequency to the high frequency with the frequency domain data of three residential quarters;
When the frequency spectrum class was measured, baseband processing unit was got the respective cell DATA REASONING respectively according to the measurement demand, in order the frequency domain data of three cell measurements was spliced into complete 72MHz frequency spectrum then, had satisfied the demand that super wide spectrum is measured bandwidth.
S2032 carries out index measurement to described the whole spectrum data, and determines the radio spectrum emitting performance of terminal according to the index that obtains.
Described index comprises following any one: occupied bandwidth (occupied bandwidth, OBW), adjacent channel leakage is than (Adjacent Channel Leakage Ratio, ACLR) and spectrum radiation template (Spectrum Emission Mask, SEM), determine the radio spectrum emitting performance of terminal according to the OBW index, ACLR index and the SEM index that obtain.Certainly, described index also comprises other indexs, and as frequency spectrum, level etc., the embodiment of the present application is not limited this.
Embodiment three:
When radio frequency testing is measured for the power class or class signal when measuring, with reference to Fig. 3, it is the method flow diagram that a kind of many bandwidth cell power of present embodiment class is measured or class signal is measured, below with the LTE terminal, maximum bandwidth is 20MHz in many residential quarters, subcarrier spacing is that the frequency spectrum class of 15KHz is measured as example and describes, and present embodiment specifically can may further comprise the steps:
S301, at the residential quarter of different bandwidth, the unified signal that uses the sample rate acquisition terminal emission of maximum bandwidth in many bandwidth cell;
Similar with embodiment two, present embodiment is the unified signal that uses the sample rate 30.72MHz acquisition terminal emission of maximum bandwidth 20MHz in many bandwidth cell still.
In the present embodiment, the sample rate of maximum bandwidth is 30.72MHz, and this sample rate multiply by the minimum FFT that satisfies maximum bandwidth 20MHz demand by subcarrier spacing 15KHz counts and 2048 obtain.
The spectrum measurement width of same bandwidth cell basis signal is divided into basic, normal, high three residential quarters in described many bandwidth cell from the low frequency to the high-frequency average, and wherein middle residential quarter is service district;
S302 disposes corresponding parameter according to different bandwidth of cell, obtains the time domain data of service district from the described signal that collects;
Present embodiment by disposing corresponding parameter, therefrom obtains the time domain data of the namely middle residential quarter of service district in the time domain data of three residential quarters that S301 gathers.
S303 carries out radio frequency to the time domain data of described service district and proofreaies and correct.
S304, the FFT of maximum bandwidth counts the time domain data after the described service district radio frequency correction is done the frequency domain data that fast Fourier FFT conversion obtains service district in the many bandwidth cell of unified use;
In the present embodiment, the FFT of unified use maximum bandwidth 20MHz residential quarter counts the time domain data after the correction of service district radio frequency is done the FFT conversion, since present embodiment at be that the power class is measured or the signal quality class is measured, therefore the minimum FFT of maximum bandwidth 20MHz residential quarter counts and 2048 carries out the FFT conversion in unified many bandwidth cell of using.The minimum FFT of 20MHz residential quarter correspondence 2048 testing requirements that can satisfy all bandwidth that are lower than 20MHz of counting in the present embodiment, the increase if count, complexity can increase, therefore present embodiment is carrying out that the power class is measured or signal quality class when measuring, and has selected for use the minimum FFT that can satisfy the minimum 20MHz residential quarter correspondence of testing requirement and complexity to count 2048.
S305 uses described frequency domain data to proceed the terminal radio frequency test.
Present embodiment measures at the power class or the signal quality class is measured, so S305 comprises following two steps:
S3051 disposes corresponding parameter according to different bandwidth of cell, obtains the service district frequency domain data that needs from the frequency domain data of described service district;
S3052 carries out Error Vector Magnitude EVM to the service district frequency domain data of described needs and measures, and determines radio-frequency power or the radiofrequency signal quality of terminal according to the EVM index that obtains.
The frequency domain data of the service district of the needs that in the present embodiment S3051 obtained carries out Error Vector Magnitude, and (Error Vector Magnitude EVM) measures, and determines radio-frequency power or the radiofrequency signal quality of terminal according to the EVM index that obtains.
When present embodiment specific descriptions radio frequency testing is power class or the measurement of signal quality class, doing the signal RF timing, because sample rate is constant, sampling interval and time domain number of samples are constant, therefore radio frequency is proofreaied and correct and is comprised that timing, frequency offset correction do not need to do any code and change, the measurement update of different bandwidth can multiplexing same module, has realized that the height of module is multiplexing.
And, it is traditional in signal EVM measures, for different sample rates, need get different FFT windows, do the FFT conversion that difference is counted, and the application is under the different bandwidth scene, all use unified baseband sampling rate, like this in EVM measures, the EVM under again can multiplexing 20MHz bandwidth scene handles computing module, use identical FFT window and do identical FFT conversion of counting, solved the difficult problem of many bandwidth radio-frequency tests very easily.
Embodiment four:
With reference to Fig. 4, be the structured flowchart of a kind of many bandwidth cell radio frequency testing device of the embodiment of the present application, present embodiment specifically comprises:
Radio-frequency front-end 401 and baseband processing unit 402,
Described radio-frequency front-end 401 comprises acquisition module 4011 and sending module 4012;
Described baseband processing unit 402 comprises receiver module 4021, FFT conversion module 4022 and processing module 4023;
Wherein,
Acquisition module 4011 is used for the residential quarter at different bandwidth, the unified signal that uses the sample rate acquisition terminal emission of maximum bandwidth in many bandwidth cell;
The sample rate of maximum bandwidth is to satisfy the minimum sample rate of maximum bandwidth demand in described many bandwidth cell, and described minimum sample rate multiply by the minimum FFT that satisfies the maximum bandwidth demand by subcarrier spacing counts and obtain.
The spectrum measurement width of same bandwidth cell basis signal is divided into basic, normal, high three residential quarters in described many bandwidth cell from the low frequency to the high-frequency average, and wherein middle residential quarter is service district;
The signal of described acquisition module acquisition terminal emission comprises the signal of the terminal emission of gathering described basic, normal, high three residential quarters.
Sending module 4012 is used for collecting signal and sends to baseband processing unit by the high-speed transfer link;
Receiver module 4021 is used for receiving the signal that described sending module sends;
FFT conversion module 4022 is used for the residential quarter at different bandwidth, and the unified FFT that uses maximum bandwidth in many bandwidth cell counts and the described signal that collects is done fast Fourier FFT conversion obtains frequency domain data;
Processing module 4023 is used for using described frequency domain data to proceed the terminal radio frequency test.
In the present embodiment, described terminal radio frequency test comprises following any one:
The frequency spectrum class is measured, the power class is measured and the signal quality class is measured.
In a kind of preferred embodiment of present embodiment, when radio frequency testing is measured for the frequency spectrum class,
Described FFT conversion module is done fast Fourier transform respectively to the signal that described three residential quarters collect, and obtains the frequency domain data of three residential quarters respectively;
As shown in Figure 5, be the structured flowchart of a kind of preferred embodiment frequency spectrum class of present embodiment radio frequency testing device when measuring, specifically comprise
Radio-frequency front-end 51 and baseband processing unit 52,
Described radio-frequency front-end 51 comprises acquisition module 511 and sending module 512;
Described baseband processing unit 52 comprises receiver module 521, FFT conversion module 522 and processing module 523;
Wherein,
Acquisition module 511 is used for the residential quarter at different bandwidth, the unified signal that uses the sample rate acquisition terminal emission of maximum bandwidth in many bandwidth cell;
Sending module 512 is used for collecting signal and sends to baseband processing unit by the high-speed transfer link;
Receiver module 521 is used for receiving the signal that described sending module sends;
FFT conversion module 522 is used for the residential quarter at different bandwidth, and the unified FFT that uses maximum bandwidth in many bandwidth cell counts and the described signal that collects is done fast Fourier FFT conversion obtains frequency domain data;
Processing module 523 is used for using described frequency domain data to proceed the terminal radio frequency test.
Described processing module 523 comprises:
Splicing submodule 5231 is used for according to the order of spectrum measurement width from the low frequency to the high frequency frequency domain data of three residential quarters being spliced into the whole spectrum data;
Emitting performance is determined submodule 5232, is used for described the whole spectrum data are carried out index measurement, and determines the radio spectrum emitting performance of terminal according to the index that obtains.
In the another kind of preferred embodiment of present embodiment, when radio frequency testing is measured for the power class or signal quality class when measuring, as shown in Figure 6, be that this preferred embodiment power class is measured or the structured flowchart of signal quality class radio frequency testing device when measuring, specifically comprise:
Radio-frequency front-end 61 and baseband processing unit 62,
Described radio-frequency front-end 61 comprises acquisition module 611 and sending module 612;
Described baseband processing unit 62 comprises receiver module 621, service district time domain data acquisition module 622, radio frequency correction module 623, FFT conversion module 624 and processing module 625;
Wherein,
Acquisition module 611 is used for the residential quarter at different bandwidth, the unified signal that uses the sample rate acquisition terminal emission of maximum bandwidth in many bandwidth cell;
Sending module 612 is used for collecting signal and sends to baseband processing unit by the high-speed transfer link;
Receiver module 621 is used for receiving the signal that described sending module sends;
Service district time domain data acquisition module 622 is used for that the signal that collects is done fast Fourier FFT conversion and disposes corresponding parameter according to different bandwidth of cell before, obtains the time domain data of service district from the described signal that collects;
Radio frequency correction module 623 is used for the time domain data of described service district is carried out the radio frequency correction.
FFT conversion module 624 is used for the residential quarter at different bandwidth, and the unified FFT that uses maximum bandwidth in many bandwidth cell counts and the described signal that collects is done fast Fourier FFT conversion obtains frequency domain data;
Processing module 625 is used for using described frequency domain data to proceed the terminal radio frequency test.
When described radio frequency testing is measured or signal quality class when measuring described FFT conversion module for the power class
Time domain data after the correction of service district radio frequency is carried out fast Fourier transform, obtain the frequency domain data of service district;
Described processing module 625 comprises:
The service district frequency domain data obtains submodule 6251, is used for disposing corresponding parameter according to different bandwidth of cell, obtains the service district frequency domain data that needs from the frequency domain data of described service district;
EVM measures submodule 6252, is used for the service district frequency domain data of described needs is carried out Error Vector Magnitude EVM measurement, and determines radio-frequency power or the radiofrequency signal quality of terminal according to the EVM index that obtains.
For device embodiment, because it is similar substantially to method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
Embodiment five:
With reference to Fig. 7, be the structured flowchart of the system of a kind of many bandwidth cell radio frequency testing of present embodiment, specifically comprise: base station simulator 701 and terminal 702.
Base station simulator 701 comprises four described any one radio frequency testing devices as embodiment.
For system embodiment, because it is similar substantially to device embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of device embodiment.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
More than method, the Apparatus and system of a kind of many bandwidth cell radio frequency testing that the application is provided, be described in detail, used specific case herein the application's principle and execution mode are set forth, the explanation of above embodiment just is used for helping to understand the application's method and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to the application's thought, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application.
Claims (17)
1. the method for bandwidth cell radio frequency testing more than a kind is characterized in that, comprising:
At the residential quarter of different bandwidth, the unified signal that uses the sample rate acquisition terminal emission of maximum bandwidth in many bandwidth cell;
At the residential quarter of different bandwidth, the unified FFT that uses maximum bandwidth in many bandwidth cell counts and the described signal that collects is done fast Fourier FFT conversion obtains frequency domain data;
Use described frequency domain data to proceed the terminal radio frequency test.
2. method according to claim 1 is characterized in that:
The sample rate of maximum bandwidth is to satisfy the minimum sample rate of maximum bandwidth demand in described many bandwidth cell, and described minimum sample rate multiply by the minimum FFT that satisfies the maximum bandwidth demand by subcarrier spacing counts and obtain.
3. method according to claim 2 is characterized in that:
When terminal is the LTE terminal, when the maximum bandwidth in described many bandwidth cell was 20MHz, the sample rate of described maximum bandwidth was 30.72MHz, and this sample rate multiply by the minimum FFT that satisfies maximum bandwidth 20MHz demand by subcarrier spacing 15KHz counts and 2048 obtain.
4. method according to claim 1 is characterized in that, described terminal radio frequency test comprises following any one:
The frequency spectrum class is measured, the power class is measured and the signal quality class is measured.
5. method according to claim 4 is characterized in that:
When radio frequency testing was measured for the frequency spectrum class, at the residential quarter of different bandwidth, to count be 8192 to the FFT of maximum bandwidth in unified many bandwidth cell of using;
When radio frequency testing is measured for the power class or signal quality class when measuring, at the residential quarter of different bandwidth, to count be 2048 to the FFT of maximum bandwidth in unified many bandwidth cell of using.
6. method according to claim 4 is characterized in that:
The spectrum measurement width of same bandwidth cell basis signal is divided into basic, normal, high three residential quarters in described many bandwidth cell from the low frequency to the high-frequency average, and wherein middle residential quarter is service district;
The signal of described acquisition terminal emission comprises the signal of the terminal emission of gathering described basic, normal, high three residential quarters.
7. method according to claim 6 is characterized in that, when radio frequency testing is measured for the frequency spectrum class, the signal that collects is done fast Fourier FFT conversion obtain frequency domain data and comprise:
The signal that described three residential quarters collect is done fast Fourier transform respectively, obtain the frequency domain data of three residential quarters respectively;
The described frequency domain data of described use is proceeded the terminal radio frequency test and is comprised:
According to the order of spectrum measurement width from the low frequency to the high frequency frequency domain data of three residential quarters is spliced into the whole spectrum data;
Described the whole spectrum data are carried out index measurement, and determine the radio spectrum emitting performance of terminal according to the index that obtains.
8. method according to claim 6 is characterized in that, when described radio frequency testing is measured for the power class or signal quality class when measuring, the signal that collects is done fast Fourier FFT conversion obtain also comprising before the frequency domain data:
Dispose corresponding parameter according to different bandwidth of cell, from the described signal that collects, obtain the time domain data of service district;
Time domain data to described service district carries out the radio frequency correction.
9. method according to claim 8 is characterized in that, when described radio frequency testing is measured for the power class or signal quality class when measuring, the signal that collects is done fast Fourier FFT conversion obtain frequency domain data and comprise:
Time domain data after the correction of service district radio frequency is carried out fast Fourier transform, obtain the frequency domain data of service district;
The described frequency domain data of described use is proceeded the terminal radio frequency test and is comprised:
Dispose corresponding parameter according to different bandwidth of cell, from the frequency domain data of described service district, obtain the service district frequency domain data that needs;
Service district frequency domain data to described needs carries out Error Vector Magnitude EVM measurement, and determines radio-frequency power or the radiofrequency signal quality of terminal according to the EVM index that obtains.
10. the device of bandwidth cell radio frequency testing more than a kind is characterized in that, comprises radio-frequency front-end and baseband processing unit,
Described radio-frequency front-end comprises acquisition module and sending module;
Described baseband processing unit comprises receiver module, FFT conversion module and processing module;
Wherein,
Acquisition module is used for the residential quarter at different bandwidth, the unified signal that uses the sample rate acquisition terminal emission of maximum bandwidth in many bandwidth cell;
Sending module is used for collecting signal and sends to baseband processing unit by the high-speed transfer link;
Receiver module is used for receiving the signal that described sending module sends;
The FFT conversion module is used for the residential quarter at different bandwidth, and the unified FFT that uses maximum bandwidth in many bandwidth cell counts and the described signal that collects is done fast Fourier FFT conversion obtains frequency domain data;
Processing module is used for using described frequency domain data to proceed the terminal radio frequency test.
11. device according to claim 10 is characterized in that:
The sample rate of maximum bandwidth is to satisfy the minimum sample rate of maximum bandwidth demand in described many bandwidth cell, and described minimum sample rate multiply by the minimum FFT that satisfies the maximum bandwidth demand by subcarrier spacing counts and obtain.
12. device according to claim 10 is characterized in that, described terminal radio frequency test comprises following any one:
The frequency spectrum class is measured, the power class is measured and the signal quality class is measured.
13. device according to claim 12 is characterized in that:
The spectrum measurement width of same bandwidth cell basis signal is divided into basic, normal, high three residential quarters in described many bandwidth cell from the low frequency to the high-frequency average, and wherein middle residential quarter is service district;
The signal of described acquisition module acquisition terminal emission comprises the signal of the terminal emission of gathering described basic, normal, high three residential quarters.
14. device according to claim 13 is characterized in that, when radio frequency testing is measured for the frequency spectrum class,
Described FFT conversion module is done fast Fourier transform respectively to the signal that described three residential quarters collect, and obtains the frequency domain data of three residential quarters respectively;
Described processing module comprises:
The splicing submodule is used for according to the order of spectrum measurement width from the low frequency to the high frequency frequency domain data of three residential quarters being spliced into the whole spectrum data;
Emitting performance is determined submodule, is used for described the whole spectrum data are carried out index measurement, and determines the radio spectrum emitting performance of terminal according to the index that obtains.
15. device according to claim 13 is characterized in that, measures for the power class or signal quality class when measuring when described radio frequency testing, also comprises:
Service district time domain data acquisition module is used for that the signal that collects is done fast Fourier FFT conversion and disposes corresponding parameter according to different bandwidth of cell before, obtains the time domain data of service district from the described signal that collects;
The radio frequency correction module is used for the time domain data of described service district is carried out the radio frequency correction.
16. device according to claim 15, it is characterized in that, measure for the power class or signal quality class when measuring when described radio frequency testing, the time domain data after described FFT conversion module is proofreaied and correct the service district radio frequency carries out fast Fourier transform, obtains the frequency domain data of service district;
Described processing module comprises:
The service district frequency domain data obtains submodule, is used for disposing corresponding parameter according to different bandwidth of cell, obtains the service district frequency domain data that needs from the frequency domain data of described service district;
EVM measures submodule, is used for the service district frequency domain data of described needs is carried out Error Vector Magnitude EVM measurement, and determines radio-frequency power or the radiofrequency signal quality of terminal according to the EVM index that obtains.
17. the system of bandwidth cell radio frequency testing is characterized in that more than one kind, comprising: terminal and base station simulator, described base station simulator comprises the device as any described many bandwidth cell radio frequency testing of claim 11 to 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310092655.1A CN103209039B (en) | 2013-03-21 | 2013-03-21 | Method, the Apparatus and system of a kind of many bandwidth cell radio frequency testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310092655.1A CN103209039B (en) | 2013-03-21 | 2013-03-21 | Method, the Apparatus and system of a kind of many bandwidth cell radio frequency testing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103209039A true CN103209039A (en) | 2013-07-17 |
| CN103209039B CN103209039B (en) | 2015-12-02 |
Family
ID=48756137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310092655.1A Active CN103209039B (en) | 2013-03-21 | 2013-03-21 | Method, the Apparatus and system of a kind of many bandwidth cell radio frequency testing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103209039B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291126A (en) * | 2016-07-15 | 2017-01-04 | 西安电子科技大学 | Complex electromagnetic environment time-domain signal analogy method based on variable sampling rate |
| CN108886695A (en) * | 2016-04-01 | 2018-11-23 | 瑞典爱立信有限公司 | Method and apparatus for controlling Measurement bandwidth to solve damage |
| CN112543066A (en) * | 2019-09-20 | 2021-03-23 | 大唐移动通信设备有限公司 | Radio frequency index measuring method and device |
| CN112804708A (en) * | 2021-01-26 | 2021-05-14 | 展讯通信（上海）有限公司 | Test vector generation method and device, chip and electronic equipment |
| CN113078966A (en) * | 2021-03-22 | 2021-07-06 | 东南大学 | High-precision 5G large-bandwidth signal testing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101500250A (en) * | 2008-01-31 | 2009-08-05 | 大唐移动通信设备有限公司 | Fast frequency point conversion method and apparatus |
| CN101931477A (en) * | 2010-09-02 | 2010-12-29 | 湖北众友科技实业股份有限公司 | System and method for automatically testing performance of TD-LTE (Time Division-Long Term Evolution) terminal |
| CN102928852A (en) * | 2012-11-19 | 2013-02-13 | 中国人民解放军国防科学技术大学 | Satellite navigation signal analog multi-channel consistency test method and device |
-
2013
- 2013-03-21 CN CN201310092655.1A patent/CN103209039B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101500250A (en) * | 2008-01-31 | 2009-08-05 | 大唐移动通信设备有限公司 | Fast frequency point conversion method and apparatus |
| CN101931477A (en) * | 2010-09-02 | 2010-12-29 | 湖北众友科技实业股份有限公司 | System and method for automatically testing performance of TD-LTE (Time Division-Long Term Evolution) terminal |
| CN102928852A (en) * | 2012-11-19 | 2013-02-13 | 中国人民解放军国防科学技术大学 | Satellite navigation signal analog multi-channel consistency test method and device |
Non-Patent Citations (2)
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108886695A (en) * | 2016-04-01 | 2018-11-23 | 瑞典爱立信有限公司 | Method and apparatus for controlling Measurement bandwidth to solve damage |
| CN108886695B (en) * | 2016-04-01 | 2022-03-25 | 瑞典爱立信有限公司 | Method and apparatus for controlling measurement bandwidth to address impairments |
| CN106291126A (en) * | 2016-07-15 | 2017-01-04 | 西安电子科技大学 | Complex electromagnetic environment time-domain signal analogy method based on variable sampling rate |
| CN106291126B (en) * | 2016-07-15 | 2018-11-20 | 西安电子科技大学 | Complex electromagnetic environment time-domain signal analogy method based on variable sampling rate |
| CN112543066A (en) * | 2019-09-20 | 2021-03-23 | 大唐移动通信设备有限公司 | Radio frequency index measuring method and device |
| CN112543066B (en) * | 2019-09-20 | 2022-04-05 | 大唐移动通信设备有限公司 | Radio frequency index measuring method and device |
| CN112804708A (en) * | 2021-01-26 | 2021-05-14 | 展讯通信（上海）有限公司 | Test vector generation method and device, chip and electronic equipment |
| CN112804708B (en) * | 2021-01-26 | 2022-12-02 | 展讯通信（上海）有限公司 | Test vector generation method and device, chip and electronic equipment |
| CN113078966A (en) * | 2021-03-22 | 2021-07-06 | 东南大学 | High-precision 5G large-bandwidth signal testing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103209039B (en) | 2015-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103209039A (en) | Multi-bandwidth neighborhood radio frequency testing method, device and system | |
| CN101064572B (en) | Method, test tool and test system for testing sensitivity of terminal receiver | |
| US20200396019A1 (en) | Systems and methods for assessing wi-fi coverage for client devices in a multi-access point environment | |
| CN107390026B (en) | A kind of digital spectrum analysis method of variable scan width | |
| US20130137380A1 (en) | Method and system for testing a wireless network device | |
| RU2014114774A (en) | METHODS AND DEVICES IN A WIRELESS COMMUNICATION SYSTEM | |
| RU2019129024A (en) | DEVICE, METHOD AND RECORDABLE MEDIA | |
| CN101867961B (en) | Method, device and system for measuring antenna aperture background noise of base station | |
| CN105591656A (en) | Transceiver gain flatness compensation method | |
| De Vito | Methods and technologies for wideband spectrum sensing | |
| CN102694593B (en) | Testing method of spectrum feature of optical passive device | |
| US10333691B2 (en) | Receiver and signal processing method | |
| JP2013192208A (en) | Measurement device and measurement method | |
| CN103607248A (en) | Test method for receiving sensitivity of wireless communication module | |
| CN101668228A (en) | Device and method for testing interface | |
| CN105075318B (en) | The method and apparatus that different system interference is evaded in a kind of reuse Spectrum Scheme | |
| CN112543066B (en) | Radio frequency index measuring method and device | |
| CN203851150U (en) | Apparatus for testing acceptable frequency offset of receiver | |
| CN103856973A (en) | Communication terminal and measurement method and device in long term evolution system | |
| CN203747808U (en) | DVB-T frequency band cognitive radio receiver system | |
| CN109302243B (en) | N-port network division same frequency interference resisting scanning method | |
| CN203337813U (en) | A verifier | |
| CN103986535B (en) | A kind of test receiver can accept the device of frequency shift (FS) | |
| CN103856960A (en) | Communication terminal and cell measurement method and device in long term evolution system | |
| KR20130045088A (en) | Test system using near field communication and test method thereof |
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 |