CN112543066B - Radio frequency index measuring method and device - Google Patents
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Abstract
The embodiment of the invention provides a radio frequency index measuring method and a radio frequency index measuring device, which are applied to a server, wherein the server is connected with acquisition equipment through a network, and the method comprises the following steps: sending a signal acquisition command to the acquisition equipment to control the acquisition equipment to acquire a radio frequency signal to an antenna to be detected; the radio frequency signals comprise at least two different network standard signals, and the at least two different network standard signals comprise 5G network standard signals; receiving the radio frequency signal uploaded by the acquisition equipment; separating the received radio frequency signals to obtain each network standard signal in the radio frequency signals; and calculating the radio frequency index of each network system signal transmitted by the antenna to be tested according to each network system signal obtained by separation. The embodiment of the invention can improve the testing efficiency and reduce the testing cost.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a radio frequency index measuring method and device.
Background
With the development of communication technology, 5G (fifth generation mobile communication technology) networks have become popular and used, and higher transmission rates can be achieved than in 4G (fourth generation mobile communication technology) networks.
Due to cost and time limitation, the construction of the 5G network is a gradual process, and the 4G network and the 5G network must coexist for a period of time. With the development of 5G network technology, multiple antennas are becoming a trend, the number of Radio frequency antenna ports included in a Radio Remote Unit (RRU) increases, and a Radio frequency index test needs to be performed on each antenna port in the antenna production process to test the transmission performance of the antenna.
At present, a professional measuring instrument is generally used for testing radio frequency indexes of antenna ports, and in the testing process, each antenna to be tested needs to be connected with one measuring instrument, so that the hardware cost is high. In addition, for an 4/5G dual-mode base station, an antenna thereof can simultaneously transmit a 4G signal and a 5G signal, however, the current measurement instrument can only perform a single-step test, that is, only the radio frequency index of the antenna transmitting the 4G signal can be tested at a certain time, or only the radio frequency index of the antenna transmitting the 5G signal can be tested, resulting in low measurement efficiency. Furthermore, in the case of testing using a measuring instrument, it is necessary to purchase a specific function option of a measuring instrument supplier to implement the testing function, which undoubtedly increases the testing cost.
Disclosure of Invention
The embodiment of the invention provides a radio frequency index measuring method and a radio frequency index measuring device, which can improve the efficiency of testing the radio frequency index of a dual-mode base station antenna and can reduce the testing cost.
The embodiment of the invention provides a radio frequency index measuring method, which is applied to a server, wherein the server is connected with acquisition equipment through a network, and the method comprises the following steps:
sending a signal acquisition command to the acquisition equipment to control the acquisition equipment to acquire a radio frequency signal to an antenna to be detected; the radio frequency signals comprise at least two different network standard signals, and the at least two different network standard signals comprise 5G network standard signals;
receiving the radio frequency signal uploaded by the acquisition equipment;
separating the received radio frequency signals to obtain each network standard signal in the radio frequency signals;
and calculating the radio frequency index of each network system signal transmitted by the antenna to be tested according to each network system signal obtained by separation.
The embodiment of the invention provides a radio frequency index measuring device, which is applied to a server, wherein the server is connected with acquisition equipment through a network, and the device comprises:
the signal acquisition module is used for sending a signal acquisition command to the acquisition equipment so as to control the acquisition equipment to acquire a radio frequency signal to an antenna to be detected; the radio frequency signals comprise at least two different network standard signals, and the at least two different network standard signals comprise 5G network standard signals;
the signal receiving module is used for receiving the radio frequency signal uploaded by the acquisition equipment;
the signal processing module is used for separating the received radio frequency signals to obtain each network standard signal in the radio frequency signals;
and the index calculation module is used for calculating the radio frequency index of each network system signal transmitted by the antenna to be tested according to each network system signal obtained by separation.
The embodiment of the invention has the following advantages:
the radio frequency index measuring method provided by the embodiment of the invention can be applied to a server, wherein the server is connected with acquisition equipment through a network and sends a signal acquisition command to the acquisition equipment so as to control the acquisition equipment to acquire a radio frequency signal to an antenna to be measured, and then the server can receive the radio frequency signal uploaded by the acquisition equipment; since the radio frequency signal includes at least two different network system signals, such as a 4G network system signal and a 5G network system signal, the server then performs separation processing on the received radio frequency signal to obtain each network system signal in the radio frequency signal. And finally, calculating the radio frequency index of each network system signal transmitted by the antenna to be tested according to each network system signal obtained by separation.
The embodiment of the invention can separate the radio frequency signals which are transmitted by the antenna to be tested and comprise at least two different network types through the server, and calculate the radio frequency index of each network type signal. The process does not need to use a professional measuring instrument or purchase a specific function option of a measuring instrument supplier, so that the testing cost can be reduced, and the testing efficiency can be improved through the parallel computing operation of the high-performance server.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a flow chart illustrating an embodiment of a method for measuring radio frequency indicators in accordance with the present invention;
FIG. 2 is a schematic diagram of a system structure applying the radio frequency index measurement method according to the present invention;
FIG. 3 shows a spectral plot of collected baseband data of the present invention;
FIG. 4 shows a spectrogram of a separated 5GNR time-domain signal according to the present invention;
FIG. 5 shows a frequency spectrum diagram of an LTE time domain signal obtained after separation according to the present invention;
FIG. 6 shows a schematic diagram of the location relationship of PSS/SSS/PBCH on a time-frequency resource grid;
fig. 7 shows a block diagram of an embodiment of the rf index measurement apparatus according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Method embodiment
Referring to fig. 1, a flowchart of an embodiment of a radio frequency indicator measurement method according to the present invention is shown, and is applied to a server, where the server is connected to an acquisition device through a network, and the method specifically includes:
102, receiving the radio frequency signal uploaded by the acquisition equipment;
103, separating the received radio frequency signals to obtain each network standard signal in the radio frequency signals;
and 104, calculating the radio frequency index of each network system signal transmitted by the antenna to be tested according to each network system signal obtained by separation.
The embodiment of the invention can be suitable for testing the radio frequency index of the antenna in the production process of the base station antenna so as to ensure the transmitting performance of the antenna. The antenna can be applied to a dual-mode base station, and can simultaneously transmit radio frequency signals of at least two different network modes, wherein the radio frequency signals of the at least two different network modes comprise 5G network mode signals. For example, the radio frequency signal may include two network standard signals, i.e., a 4G signal and a 5G signal; for another example, the radio frequency signal may include three network standard signals, i.e., 3G, 4G, and 5G. It can be understood that, in the embodiment of the present invention, neither the type nor the number of the network types included in the radio frequency signal transmitted by the antenna is limited. For convenience of description, in the embodiments of the present invention, an antenna test scenario of an 4/5G dual-mode base station is taken as an example for illustration, that is, a radio frequency signal transmitted by the antenna to be tested includes a 4G network standard signal (LTE signal) and a 5G network standard signal (5GNR signal).
In order to solve the problems of low test efficiency and high test cost caused by the fact that a professional measuring instrument is used for testing the radio frequency indexes of the antenna ports at present, the embodiment of the invention is based on a 3GPP (3rd Generation Partnership Project) protocol and a relevant principle of digital signal processing, and can simultaneously test a plurality of antennas in parallel so as to improve the test efficiency.
Specifically, the embodiment of the invention provides a radio frequency index measuring method, which is applied to a server, wherein the server is connected with an acquisition device through a network. Referring to fig. 2, a system structure diagram of the method for measuring a radio frequency indicator according to the embodiment of the present invention is shown. As shown in fig. 2, the system includes a server 201, an acquisition device 202, and an antenna 203 to be tested. The server 201 may be connected to a plurality of acquisition devices 202 through a network, and each acquisition device 202 is connected to one antenna 203 to be tested.
In the embodiment of the present invention, a signal source may be used to generate a dual-mode signal, and simulate a real RRU (Remote Radio Unit) to transmit a signal, for example, a central frequency point is selected at 2.6 GHz. In an application example of the present invention, the following test environments may be provided: a Signal source of RS (Reference Signal) is used to configure a Signal with a downlink 10M bandwidth, and as algorithm verification, an FDD (Frequency Division duplex) Signal is used. The 5GNR (5G New Radio, a global 5G standard for a completely New air interface design based on OFDM (Orthogonal Frequency Division Multiplexing)) signal configuration is as follows: 24 PRBs, SSBs (Single Side Band) and PDSCHs (Physical Downlink Shared Channel) are 30K, PBCH (Physical Broadcast Channel) is 2 in each frame, and demodulation reference signal is TYPE a without additional reference signal. An LTE (Long Term Evolution) signal uses FDD data with a bandwidth of TM3.110M, and uses a waveform synthesis function of R & S wini qsim2 (simulation software) to synthesize a dual-mode waveform, where the carrier center distance is 10M, that is, no interval is set. A signal source sends out a TDD (Time Division duplex) signal, which enters the acquisition device through a radio frequency antenna and an attenuator.
It is to be understood that the configuration information of the test environment is only an application example of the present invention, and in practical applications, a person skilled in the art may flexibly configure the test environment according to practical situations.
In the embodiment of the invention, the server sends a signal acquisition command to the acquisition equipment through remote control so as to control the acquisition equipment to acquire the radio frequency signal to the antenna to be detected.
In an optional embodiment of the present invention, the step of controlling the acquisition device to acquire a radio frequency signal to an antenna to be tested specifically includes: and controlling the acquisition equipment to acquire the radio frequency signals of the preset time period to the antenna to be detected.
In order to ensure that the acquired radio frequency signal contains complete frame data, the server controls the acquisition equipment to acquire the radio frequency signal from the antenna to be detected for a time period longer than a preset time period, such as 20MS, and after receiving the radio frequency signal acquired by the acquisition equipment, the server analyzes and processes the radio frequency signal according to preset cell setting parameters.
In practical application, the acquisition equipment can be a broadband data acquisition terminal which simplifies a frequency spectrograph, does not need a screen or a key, is only responsible for acquiring radio-frequency signals transmitted by an antenna to be detected, sends the acquired radio-frequency signals to a server through a network, and analyzes and processes the radio-frequency signals acquired by the acquisition equipment through the server. Therefore, the embodiment of the invention can separate the signal acquisition function from the analysis processing function, the signal acquisition function is realized by the simplified frequency spectrograph, and the hardware cost can be reduced because the simplified frequency spectrograph does not need to have the signal analysis processing function; the analysis processing function of the signals is realized by a high-performance server, so that the signal processing efficiency can be greatly improved; in addition, by the embodiment of the invention, the radio frequency indexes of the antenna can be tested in batch in the production process of the base station antenna. The server can send signal acquisition commands to a plurality of acquisition devices simultaneously to control the plurality of acquisition devices simultaneously acquire radio frequency signals to the antenna to be tested, and can analyze and process the radio frequency signals acquired by the plurality of acquisition devices simultaneously through a multithreading technology, calculate radio frequency indexes of the plurality of antennas simultaneously, and further can greatly improve the test efficiency.
In the embodiment of the invention, a server firstly sends a signal acquisition command to the acquisition equipment so as to control the acquisition equipment to acquire radio frequency signals to an antenna to be detected; then, the radio frequency signal uploaded by the acquisition device can be received; since the radio frequency signal includes at least two different network system signals, such as a 4G network system signal and a 5G network system signal, the server then performs separation processing on the received radio frequency signal to obtain each network system signal in the radio frequency signal. And finally, calculating the radio frequency index of each network system signal transmitted by the antenna to be tested according to each network system signal obtained by separation.
The embodiment of the invention can separate the radio frequency signals which are transmitted by the antenna to be tested and comprise at least two different network types through the server, and calculate the radio frequency index of each network type signal. The process does not need to use a professional measuring instrument or purchase a specific function option of a measuring instrument supplier, so that the testing cost can be reduced, and the testing efficiency can be improved through the parallel computing operation of the high-performance server.
In an optional embodiment of the present invention, the step of performing separation processing on the received radio frequency signals to obtain each network standard signal in the radio frequency signals may specifically include:
step S11, converting the received radio frequency signal from a time domain signal to a frequency domain signal by utilizing Fourier transform;
step S12, according to different frequency domains corresponding to each network standard signal in the radio frequency signals, separating the frequency domain signal of each network standard from the frequency domain signal;
and step S13, converting the frequency domain signal of each network standard into a time domain signal of each network standard by utilizing inverse Fourier transform.
In the embodiment of the invention, the spectrogram of the baseband data acquired by the acquisition equipment is separated in the frequency domain, but is mixed together in the time domain, and the next operation can be executed only by performing separation processing. Referring to fig. 3, a frequency spectrum diagram of collected baseband data according to an embodiment of the present invention is shown.
The spectrogram shown in fig. 3 may include signals of different network standards (e.g., 5GNR signals and LTE signals) mixed together in time, but the signals of different network standards are separated in frequency domain, so that, in the embodiment of the present invention, a fourier transform may be used to convert the received radio frequency signal from a time domain signal to a frequency domain signal, and then perform frequency domain separation on the frequency domain signal, so as to obtain frequency domain signals of each network standard (e.g., 5GNR frequency domain signals and LET frequency domain signals), and then perform inverse fourier transform on the frequency domain signals so as to obtain time domain signals of each network standard (e.g., 5GNR time domain signals and LET time domain signals), i.e., may calculate radio frequency indexes for the time domain signals of each network standard, respectively.
In particular, if x (t) is the limited energy signal xa(t) results of sampling at a uniform sampling rate F, the signal energy E can be expressed as:
then, by fourier transforming the above equation (1), it can be obtained:
according to the Pasteur theorem:
wherein, | Xa(F)|2The distribution of signal energy is expressed as a function of frequency, referred to as energy spectral density.
For a discrete signal:
where f is the sampling frequency.
The fourier transform is a linear transform, defined as:
wherein k is 0,1, 2.
The inverse fourier transform is defined as:
wherein N is 0,1, 2. Linearity: a is1x1(n)+a2x2(n)＜-DFT-＞a1X1(k)+a2X2(k) The sum of the two sequences corresponds to the sum of their Fourier transforms, the time-domain shift k of the sequence being equal to the frequency spectrum in the frequency domain multiplied by e-jwk。
The 5GNR frequency domain signal separated from the frequency domain has the part of the LTE signal removed, the frequency moving operation is carried out on the frequency spectrum data, and the 5G time domain signal can be obtained through the inverse Fourier transform; similarly, the separated LTE frequency domain signal is subjected to a frequency shifting operation by the spectrum data, and then subjected to an inverse fourier transform to obtain an LTE time domain signal. Fig. 4 shows a frequency spectrum diagram of a 5GNR time domain signal obtained after separation according to an embodiment of the present invention, and fig. 5 shows a frequency spectrum diagram of an LTE time domain signal obtained after separation according to an embodiment of the present invention.
In an optional embodiment of the present invention, the step of calculating, according to the each network standard signal obtained by separation, a radio frequency index of each network standard signal transmitted by the antenna to be tested may specifically include:
step S21, analyzing the time domain signal of each network standard, and determining the initial position of the data frame;
step S22, obtaining original baseband data of each network standard signal according to the initial position of the data frame in the time domain signal of each network standard and the length of the data frame corresponding to the signal of different network standards;
and step S22, calculating the radio frequency index of each network standard signal according to the original baseband data of each network standard signal.
And respectively carrying out analysis processing on the 5GNR time domain signal and the LET time domain signal to determine the position of the data frame. Specifically, a Primary Synchronization Signal (PSS) Signal in the PBCH is searched from the Signal, a PSS position is obtained by performing correlation operation on the known PSS Signal and the acquired data, then the position of the first subframe of the data frame is calculated according to the configuration of the PBCH, and one frame of 10MS including 20 SLOT (SLOT) is intercepted according to the sampling rate.
Where NR contains two kinds of synchronization signals: primary Synchronization signals PSS and SSS (Secondary Synchronization Signal). The PSS and SSS signals each occupy 127 subcarriers. The PBCH signal spans 3 OFDM symbols and 240 subcarriers, of which 127 subcarriers in the middle of one OFDM symbol are occupied by SSS signals.
In NR systems, a total of 1008 cell IDs are defined, which are 336 cell group IDs, each cell group consisting of 3 intra-group cells, and the generation of PSS signals requires the use of the intra-group IDs. Referring to fig. 6, a schematic diagram of a location relationship of PSS/SSS/PBCH on a time-frequency resource grid is shown.
As can be seen from FIG. 6, for CASE-B-30kHz subcarrier spacing: the symbol position index {4,8,16,20} +28 × n for the PSS/PBCH block. For carrier frequencies less than or equal to 3GHz, n is 0. For carrier frequencies greater than 3GHz and less than or equal to 6GHz, n is 0, 1.
The current signal PSS sequence can be calculated according to the known cell configuration conditions, correlation operation is carried out on the current signal PSS sequence and the acquired signals, the position operation result of the frame is determined, and 4 peak positions are obtained, wherein the peak positions are the positions of the PSS in waveform data.
And obtaining the original baseband data of the signals of each network system according to the initial position of the data frame in the time domain signals of each network system and the length of the data frame corresponding to the signals of different network systems.
Specifically, for the current setup of the embodiment of the present invention, the first 2 PSS are located at the positions of the 4 th and 8 th OFDM symbols, respectively, and the entire frame length is 280 symbols. Here, it is sufficient to take one entire frame. OFDM data demodulation is carried out on the sampled data, and the original baseband data can be obtained by removing cyclic prefix and the like.
Optionally, after obtaining the original baseband data of each network standard signal, the embodiment of the present invention may further perform channel equalization calculation on the original baseband data of each network standard signal.
DMRS values are obtained by DMRS (Demodulation Reference Signal) configuration of the PDSCH, and are a set of pilot signals used to determine coefficients of channel fading, where the pilot signals are QPSK (Quadrature Phase Shift Keying) debugged data, and may use the DMRS to perform channel equalization. The signal transmission formula is as follows:
Y(k)＝H(k)*X(k)+noise (7)
where y (k) represents received data, x (k) represents transmitted data, h (k) represents channel fading, and Noise represents Noise. And calculating an original value and an actual value of the DMRS to obtain a channel response H (k), performing linear interpolation on the PDSCH symbol position of each SLOT to obtain channel responses of other positions, and then performing equalization processing on PDSCH data.
The received demodulated 256QAM data has deteriorated constellation due to the fact that the channel influence is deteriorated, and the signal subjected to channel equalization calculation has a good 256QAM constellation.
And finally, according to the original baseband data of each network standard signal subjected to channel equalization calculation, calculating the radio frequency index of each network standard signal.
In an optional embodiment of the present invention, the radio frequency index may specifically include: the magnitude of the error vector.
Specifically, for the 5GNR signal and the LTE signal, EVM (Error Vector Magnitude) can be calculated by the following formula, respectively:
wherein,
Ikrepresenting the in-phase component, Q, of an OFDM symbolkRepresenting the orthogonal component of an OFDM symbol, N representing the input data length, Ik、QkRepresenting the ideal data (reference),
indicating the measured data (received).
It is to be understood that the above-mentioned taking the magnitude of the Error vector as a measured rf indicator is only an application example of the present invention, and the embodiment of the present invention does not limit the specific type of the rf indicator, for example, the rf indicator may also include transmit Power (TX Power), Frequency Error (Frequency Error), and the like.
To sum up, the radio frequency index measurement method provided by the embodiment of the present invention may be applied to a server, where the server is connected to an acquisition device through a network, and sends a signal acquisition command to the acquisition device to control the acquisition device to acquire a radio frequency signal to an antenna to be tested, and then the server may receive the radio frequency signal uploaded by the acquisition device; since the radio frequency signal includes at least two different network system signals, such as a 4G network system signal and a 5G network system signal, the server then performs separation processing on the received radio frequency signal to obtain each network system signal in the radio frequency signal. And finally, calculating the radio frequency index of each network system signal transmitted by the antenna to be tested according to each network system signal obtained by separation.
The embodiment of the invention can separate the radio frequency signals which are transmitted by the antenna to be tested and comprise at least two different network types through the server, and calculate the radio frequency index of each network type signal. The process does not need to use a professional measuring instrument or purchase a specific function option of a measuring instrument supplier, so that the testing cost can be reduced, and the testing efficiency can be improved through the parallel computing operation of the high-performance server.
Device embodiment
Referring to fig. 7, a block diagram of a radio frequency indicator measuring apparatus according to an embodiment of the present invention is shown, and is applied to a server, where the server is connected to a collection device through a network, and the apparatus may specifically include:
the signal acquisition module 701 is configured to send a signal acquisition command to the acquisition device to control the acquisition device to acquire a radio frequency signal to an antenna to be detected; the radio frequency signals comprise at least two different network standard signals, and the at least two different network standard signals comprise 5G network standard signals;
a signal receiving module 702, configured to receive the radio frequency signal uploaded by the acquisition device;
a signal processing module 703, configured to separate the received radio frequency signals to obtain each network standard signal in the radio frequency signals;
and an index calculation module 704, configured to calculate, according to the each network standard signal obtained by separation, a radio frequency index of each network standard signal transmitted by the antenna to be tested.
Optionally, the signal processing module 703 includes:
the first transformation submodule is used for converting the received radio frequency signal from a time domain signal to a frequency domain signal by utilizing Fourier transformation;
the signal separation submodule is used for separating the frequency domain signal of each network standard from the frequency domain signal according to different frequency domains corresponding to each network standard signal in the radio frequency signal;
and the second transformation submodule is used for converting the frequency domain signal of each network system into a time domain signal of each network system by utilizing inverse Fourier transform.
Optionally, the index calculating module 704 includes:
the position determining submodule is used for analyzing and processing the time domain signal of each network type and determining the initial position of the data frame;
the data acquisition submodule is used for obtaining the original baseband data of each network system signal according to the initial position of a data frame in the time domain signal of each network system and the length of the data frame corresponding to the signal of different network systems;
and the index calculation submodule is used for calculating the radio frequency index of each network system signal according to the original baseband data of each network system signal.
Optionally, the signal acquisition module 701 is specifically configured to control the acquisition device to acquire a radio frequency signal of a preset time period to an antenna to be detected.
Optionally, the radio frequency indicator includes: the magnitude of the error vector.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The radio frequency index measuring method and the radio frequency index measuring device provided by the invention are described in detail, specific examples are applied in the description to explain the principle and the implementation mode of the invention, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. A radio frequency index measurement method is applied to a server, the server is connected with an acquisition device through a network, and the method comprises the following steps:
sending a signal acquisition command to the acquisition equipment to control the acquisition equipment to acquire a radio frequency signal to an antenna to be detected; the radio frequency signals comprise at least two different network standard signals, and the at least two different network standard signals comprise 5G network standard signals;
receiving the radio frequency signal uploaded by the acquisition equipment;
separating the received radio frequency signals to obtain each network standard signal in the radio frequency signals;
calculating the radio frequency index of each network system signal transmitted by the antenna to be tested according to each network system signal obtained by separation, wherein the calculation comprises the following steps: analyzing the time domain signal of each network system, and determining the initial position of the data frame;
obtaining original baseband data of each network system signal according to the initial position of a data frame in the time domain signal of each network system and the length of the data frame corresponding to the signal of different network systems;
and calculating the radio frequency index of each network standard signal according to the original baseband data of each network standard signal.
2. The method according to claim 1, wherein the step of performing separation processing on the received radio frequency signals to obtain each network standard signal in the radio frequency signals comprises:
converting the received radio frequency signal from a time domain signal to a frequency domain signal using a fourier transform;
according to different frequency domains corresponding to each network standard signal in the radio frequency signals, separating the frequency domain signal of each network standard from the frequency domain signals;
and converting the frequency domain signal of each network standard into a time domain signal of each network standard by utilizing inverse Fourier transform.
3. The method of claim 1, wherein the step of controlling the acquisition device to acquire the radio frequency signal to the antenna under test comprises:
and controlling the acquisition equipment to acquire the radio frequency signals of the preset time period to the antenna to be detected.
4. The method of any one of claims 1 to 3, wherein the radio frequency metrics include: the magnitude of the error vector.
5. A radio frequency index measuring device is applied to a server, the server is connected with a collecting device through a network, and the device comprises:
the signal acquisition module is used for sending a signal acquisition command to the acquisition equipment so as to control the acquisition equipment to acquire a radio frequency signal to an antenna to be detected; the radio frequency signals comprise at least two different network standard signals, and the at least two different network standard signals comprise 5G network standard signals;
the signal receiving module is used for receiving the radio frequency signal uploaded by the acquisition equipment;
the signal processing module is used for separating the received radio frequency signals to obtain each network standard signal in the radio frequency signals;
an index calculation module, configured to calculate a radio frequency index of each network standard signal transmitted by the antenna to be tested according to each network standard signal obtained through separation, where the index calculation module includes: the position determining submodule is used for analyzing and processing the time domain signal of each network type and determining the initial position of the data frame;
the data acquisition submodule is used for obtaining the original baseband data of each network system signal according to the initial position of a data frame in the time domain signal of each network system and the length of the data frame corresponding to the signal of different network systems;
and the index calculation submodule is used for calculating the radio frequency index of each network system signal according to the original baseband data of each network system signal.
6. The apparatus of claim 5, wherein the signal processing module comprises:
the first transformation submodule is used for converting the received radio frequency signal from a time domain signal to a frequency domain signal by utilizing Fourier transformation;
the signal separation submodule is used for separating the frequency domain signal of each network standard from the frequency domain signal according to different frequency domains corresponding to each network standard signal in the radio frequency signal;
and the second transformation submodule is used for converting the frequency domain signal of each network system into a time domain signal of each network system by utilizing inverse Fourier transform.
7. The apparatus according to claim 5, wherein the signal acquisition module is specifically configured to control the acquisition device to acquire the radio frequency signal of a preset time period to the antenna to be tested.
8. The apparatus of any of claims 5 to 7, wherein the radio frequency indicator comprises: the magnitude of the error vector.
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