CN210867725U - Radio frequency matrix of frequency division duplex system and performance test system - Google Patents
Radio frequency matrix of frequency division duplex system and performance test system Download PDFInfo
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Abstract
The utility model discloses a radio frequency matrix and capability test system of frequency division duplex standard, the radio frequency matrix is M × N radio frequency matrix, M × N radio frequency matrix includes the duplex module, the duplex module divide into M × N way up channel and M × N way down channel with M × N radio frequency matrix, every way up channel and every way down channel all are equipped with phase shift and decay module or phase shift module, M × N radio frequency matrix is used for converting the M way down original signal that the base station sent into N way down received signal through M × N way down channel and sends to the terminal, M × N radio frequency matrix still is used for converting the N way up original signal that the terminal sent into M way up received signal through M × N way up channel and sends to the base station.
Description
Technical Field
The invention relates to the technical field of communication testing, in particular to a radio frequency matrix of a frequency division duplex system and a performance testing system.
Background
Large-scale MIMO (multiple input multiple output technology) can greatly improve cell capacity and throughput by using spatial multiplexing technology without increasing new spectrum resources.
With the continuous development of the MIMO technology, the FDD technology is also continuously mature, terminals are more abundant, and the FDD technology is more and more widespread in the world, but the existing test solution for FDD is not mature enough, and a traditional FDD (Frequency-division Duplex) test solution is still used, but due to the complexity of an FDD channel, the traditional test solution is more complex, and the traditional FDD test solution does not have an ideal laboratory test system and environment to simulate the channel, so that the traditional FDD test solution is more complex.
Disclosure of Invention
The invention aims to provide a frequency division duplex radio frequency matrix and a performance test system, which solve the technical problems that the traditional test scheme is complex and cannot test a channel in a laboratory.
In order to solve the technical problem, the invention provides a radio frequency matrix of a frequency division duplex system, wherein the radio frequency matrix is an M × N radio frequency matrix;
the M × N radio frequency matrix comprises a duplex module, the duplex module divides the M × N radio frequency matrix into M × N uplink channels and M × N downlink channels, each uplink channel and each downlink channel are provided with a phase shifting and attenuating module or a phase shifting module, the M × N radio frequency matrix is used for converting M downlink original signals sent by the base station into N downlink receiving signals through the M × N downlink channels and sending the N downlink receiving signals to the terminal, and the M × N radio frequency matrix is also used for converting N uplink original signals sent by the terminal into M uplink receiving signals through the M × N uplink channels and sending the M uplink receiving signals to the base station.
Furthermore, the M × N radio frequency matrix comprises M first ports and N second ports, and the M × N radio frequency matrix also comprises a power divider and a combiner;
the power divider is located at the M first ports and is configured to divide an original signal of each first port into N paths of signals;
the combiner is located at the N second ports, and is configured to combine the M original signals into one received signal.
In addition, the invention provides a frequency division duplex system performance test system which comprises a control device and the radio frequency matrix, wherein the control device is connected with the M × N radio frequency matrix, and is used for acquiring a target beam angle, acquiring a phase setting value of each channel in an M × N uplink channel and an M × N downlink channel according to the target beam angle and a preset model, and adjusting a phase value of a phase shifting and attenuating module or a phase shifting module of a corresponding channel according to the phase setting value of each channel.
Further, the preset model is:
PS＝(j-1)*2π*Di/λ*SIN(θ)+(i-1)*2π*Dj/λ*SIN(φ)
the vibration source of the base station antenna butted with the M first ports is an area array of i × j, Di is the distance between the transverse adjacent vibration sources, Dj is the distance between the longitudinal adjacent vibration sources, theta is the angle of the horizontal direction of the wave beam, phi is the angle of the vertical direction of the wave beam, and lambda is the wavelength.
Furthermore, the control device is further configured to obtain a target gain, and adjust the attenuation value of the corresponding channel in real time according to the target gain.
Further, in the M × N rf matrix, M is 2, 4, 8, 16, 32, 64, 128, 256, and N is 2, 4, 8, 16, 32, 64, 128, 256.
Further, the duplex module is located between the power divider and the combiner; or the duplex module is positioned between the splitter and the base station and between the splitter and the terminal.
Correspondingly, the invention also provides a frequency division duplex system performance test method, which adopts the frequency division duplex system performance test system for testing and comprises the steps of connecting M first ports with a base station, connecting N second ports with terminals, converting M paths of downlink original signals sent by the base station into N paths of downlink receiving signals through M × N paths of downlink channels, sending the N paths of downlink original signals sent by the terminals into M paths of uplink receiving signals through M × N paths of uplink channels, sending the M paths of uplink receiving signals to the base station, inputting a target beam angle, obtaining a phase setting value of each channel in the M × N paths of uplink channels and the M × N paths of downlink channels according to the target beam angle and a preset model, and adjusting the phase value of the phase shifting module or the phase shifting module corresponding to the channel according to the phase setting value of each channel.
The preset model is as follows:
PS＝(j-1)*2π*Di/λ*SIN(θ)+(i-1)*2π*Dj/λ*SIN(φ)
the vibration source of the base station antenna butted with the M first ports is an area array of i × j, Di is the distance between the transverse adjacent vibration sources, Dj is the distance between the longitudinal adjacent vibration sources, theta is the angle of the horizontal direction of the wave beam, phi is the angle of the vertical direction of the wave beam, and lambda is the wavelength.
And further, inputting different target beam angles to obtain test data reported by the terminal, and comparing the test data with expected data.
The implementation of the invention has the following beneficial effects:
(1) the frequency division duplex performance test system provided by the invention can simulate the transmission characteristic of an FDD system under a limited test environment and accurately test the related performance of a base station or a terminal under the FDD system.
(2) The frequency division duplex performance test system provided by the invention can reversely calculate the phase value of each channel through the beam angle input by the user, obtain the related test data reported by the terminal while adjusting the angle, analyze whether the test data is in accordance with the expectation or not, and is simple to operate by the user.
(3) The duplex module is used in the frequency division duplex performance test system provided by the invention to separate the uplink channel from the downlink channel, and the uplink channel and the downlink channel are still an integral M × N radio frequency matrix outwards, actually, the system has two channels of M × N channels, the uplink channel and the downlink channel cannot interfere with each other, and the test precision is high.
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In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described 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 to obtain other drawings without creative efforts.
Fig. 1 is a channel diagram of a frequency division duplex performance testing system according to a second embodiment of the present invention;
fig. 2 is a channel diagram of a frequency division duplex performance testing system according to a third embodiment of the present invention;
fig. 3 is a channel diagram of a frequency division duplex performance testing system according to a fourth embodiment of the present invention;
fig. 4 is a schematic diagram of a frequency division duplex performance testing system according to a fifth embodiment of the present invention;
fig. 5 is a channel diagram of a frequency division duplex performance testing system according to a fifth embodiment of the present invention;
FIG. 6 is a schematic diagram of the direction of information flow in the present invention;
fig. 7 is a schematic diagram of the arrangement of the antenna sources of the base station.
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
The invention develops a radio frequency matrix, a performance test system and a method aiming at a Frequency Division Duplex (FDD) system aiming at the current stage test requirement of FDD, and serves the global cellular communication industry.
Example 1
A frequency division duplex radio frequency matrix is an M × N radio frequency matrix, the M × N radio frequency matrix comprises a duplex module, the duplex module divides the M × N radio frequency matrix into M × N uplink channels and M × N downlink channels, each uplink channel and each downlink channel are provided with a phase shifting and attenuating module or a phase shifting module, the M × N radio frequency matrix is used for converting M downlink original signals sent by a base station into N downlink receiving signals through the M × N downlink channels and sending the N downlink receiving signals to a terminal, and the M × N radio frequency matrix is also used for converting N uplink original signals sent by the terminal into M uplink receiving signals through the M × N uplink channels and sending the M uplink receiving signals to the base station.
Furthermore, the M × N radio frequency matrix comprises M first ports and N second ports, the M × N radio frequency matrix further comprises a power divider and a combiner, the power divider is located at the M first ports and used for dividing the original signals of each first port into N paths of signals, and the combiner is located at the N second ports and used for combining the M paths of original signals into one path of received signals.
Example 2
A performance test system of frequency division duplex mode comprises a control device, an M × N radio frequency matrix in embodiment 1, a power supply system and a chassis frame.
The M × N radio frequency matrix comprises an M × N radio frequency matrix, the M × N radio frequency matrix comprises M first ports and N second ports, the M first ports are connected with the base station, the N second ports are connected with the terminals, the base station sends M paths of original signals, the M × N radio frequency matrix receives the M paths of original signals sent by the base station, converts the M paths of original signals into N paths of received signals and sends the N paths of received signals to the terminals through the N second ports.
The M × N RF matrix further includes a duplex module, a phase shift module, and a splitter, where the splitter includes a power divider and a combiner, the power divider is a 1/N RF power divider in this embodiment, and the combiner is a 1/M RF combiner.
Each first port is provided with a 1/N radio frequency power divider, a main port of the 1/N radio frequency power divider receives one path of original signals and divides the one path of original signals into N paths of signals, M first ports are provided with M1/N radio frequency power dividers, and each 1/N radio frequency power divider divides the original signals of each first port into N paths of signals; each second port is provided with a 1/M radio frequency combiner, and the main port of the 1/M radio frequency combiner combines M original signals into a path of receiving signal.
The duplex module divides an M × N radio frequency matrix into M × N uplink channels and M × N downlink channels, the M × N radio frequency matrix looks like an M × N radio frequency matrix outwards, and actually consists of two M × N channels and the duplex module, and comprises M × N × channels, wherein one channel is an M × N uplink channel, and the other channel is an M × N downlink channel.
The M downlink original signals sent by the base station are converted into N downlink receiving signals through M × N downlink channels and sent to the terminal, and the N uplink original signals sent by the terminal are converted into M uplink receiving signals through M × N uplink channels and sent to the base station.
In embodiment 2, each uplink channel and each downlink channel are provided with a phase shift module. Preferably, in this embodiment, the duplex module is located between the power divider and the combiner, that is, the duplex module is disposed between each power divider and the phase shift module, and the duplex module is disposed between each combiner and the phase shift module. Specifically, referring to fig. 1, each tap of the 1/N rf power splitter is connected to a duplexer, each tap of the duplexer is connected to a phase shifting module, each tap of the 1/M rf combiner is connected to a duplexer, and each tap of the duplexer is connected to the phase shifting module.
Since each uplink channel and each downlink channel are provided with a phase shift module, the M × N radio frequency matrix in the invention comprises M × N × 2 phase shift modules, preferably, M is 2, 4, 8, 16, 32, 64, 128, 256, and N is 2, 4, 8, 16, 32, 64, 128, 256 in the M × N radio frequency matrix.
The control device is connected with the M × N radio frequency matrix and used for obtaining a target beam angle, obtaining a phase setting value of each channel in the M × N uplink channels and the M × N downlink channels according to the target beam angle and a preset model, and adjusting a phase value of a phase shifting module corresponding to the channel according to the phase setting value of each channel.
Preferably, the preset model is:
PS＝(j-1)*2π*Di/λ*SIN(θ)+(i-1)*2π*Dj/λ*SIN(φ)
the vibration source of the base station antenna butted with the M first ports is an area array of i × j, Di is the distance between the transverse adjacent vibration sources, Dj is the distance between the longitudinal adjacent vibration sources, theta is the angle of the horizontal direction of the wave beam, phi is the angle of the vertical direction of the wave beam, and lambda is the wavelength.
Referring to fig. 7, the base station antenna sources are schematically arranged, and the base station antenna sources butted with the M first ports are planar arrays of i × j, where i × j is equal to M.
In addition, the power supply system is used for supplying power to the control device and the M × N radio frequency matrix, and the control device, the M × N radio frequency matrix and the power supply system are all installed in the chassis frame to jointly form a frequency division duplex system performance test system.
When the system is used, the performance test method of the frequency division duplex system comprises the following contents.
Connecting the M first ports to a T/R port of the base station equipment, and using the M first ports to receive M Downlink (DL) original signals sent by the base station equipment or transmitting Uplink (UL) received signals to the base station equipment; n second ports are connected to each T/R port or R port of the terminal device for delivering a Downlink (DL) received signal to the terminal or for delivering an Uplink (UL) original signal to the terminal device.
Referring to fig. 6, the information flow is transmitted in the direction that M downlink original signals sent by the base station device are converted into N downlink received signals through M × N downlink channels and sent to the terminal, and N uplink original signals sent by the terminal are converted into M uplink received signals through M × N uplink channels and sent to the base station.
The method comprises the steps that a user inputs a target beam angle into a control device, phase setting values of each channel in M × N uplink channels and M × N downlink channels are obtained according to the target beam angle and a preset model, and phase values of phase shifting modules of corresponding channels are adjusted according to the phase setting values of each channel.
During testing, inputting different target beam angles, adjusting phase values of corresponding channels to obtain test data reported by the terminal, wherein the test data comprises parameters such as throughput rate, signal-to-noise ratio, bit error rate and MCS value and parameter changes, comparing the test data with expected data, and analyzing the performance of the base station or the terminal.
The frequency division duplex performance test system provided by the invention can reversely calculate the phase value of each channel through the beam angle input by a user, obtains related test data reported by the terminal while adjusting the angle, analyzes whether the test data is in accordance with expectation, and is simple to operate for the user.
Example 3
Referring to fig. 2, based on the second embodiment, N attenuation modules are added at the positions of N second ports, and in this case, the M × N rf matrix includes M × N × 2 phase shift modules and N attenuation modules.
At this time, the control device is further configured to obtain a target gain, and adjust an attenuation value of the corresponding attenuation module in real time according to the target gain.
When the system is used, the attenuation value of the corresponding attenuation module can be manually adjusted according to the target gain until the target gain is reached.
Example 4
Referring to fig. 3, on the basis of the second embodiment, the phase shift module of the second embodiment is replaced by a phase shift and attenuation module, in this case, the M × N radio frequency matrix includes M × N × 2 phase shift and attenuation modules, and the phase shift and attenuation modules set the phase shift and attenuation functions, in this case, the attenuation module is not required to be provided.
In the fourth embodiment, the control device is further configured to obtain a target gain, and adjust the attenuation value of the corresponding channel in real time according to the target gain.
The third and fourth embodiments described above are used in a similar manner to the second embodiment.
Connecting the M first ports to a T/R port of the base station equipment, and using the M first ports to receive M Downlink (DL) original signals sent by the base station equipment or transmitting Uplink (UL) received signals to the base station equipment; n second ports are connected to each T/R port or R port of the terminal device for delivering a Downlink (DL) received signal to the terminal or for delivering an Uplink (UL) original signal to the terminal device.
Referring to fig. 6, the information flow is transmitted in the direction that M downlink original signals sent by the base station device are converted into N downlink received signals through M × N downlink channels and sent to the terminal, and N uplink original signals sent by the terminal are converted into M uplink received signals through M × N uplink channels and sent to the base station.
The method comprises the steps that a user inputs a target beam angle into a control device, phase setting values of each channel in M × N uplink channels and M × N downlink channels are obtained according to the target beam angle and a preset model, and phase values of phase shifting modules of corresponding channels are adjusted according to the phase setting values of each channel.
During testing, inputting different target beam angles, adjusting phase values of corresponding channels to obtain test data reported by the terminal, wherein the test data comprises parameters such as throughput rate, signal-to-noise ratio, bit error rate and MCS value and parameter changes, comparing the test data with expected data, and analyzing the performance of the base station or the terminal.
And manually adjusting the attenuation value of the corresponding channel according to the target gain until the target gain is reached. And obtaining test data reported by the terminal, comparing the test data with expected data, and analyzing the performance of the base station or the terminal.
The frequency division duplex performance test system provided by the third embodiment and the fourth embodiment can simulate the transmission characteristic of an FDD system under a limited test environment, and accurately test the related performance of a base station or a terminal under the FDD system, the frequency division duplex performance test system provided by the invention can reversely calculate the phase value of each channel through the beam angle input by a user, and simultaneously adjust the attenuation value of the channel according to the real-time gain so as to achieve the setting of target gain, and the related test data reported by the terminal is obtained while the angle and the gain are adjusted, so that whether the test data meet expectations or not is analyzed, the user operation is simple, the frequency division duplex performance test system provided by the invention separates an uplink channel and a downlink channel by using a duplex module, and the uplink channel and the downlink channel are still an integral M × N radio frequency matrix outwards, and actually consist of an M × N channel and a duplex module, the uplink channel and the downlink channel cannot interfere with each other, and.
Example 5
Referring to fig. 4 and fig. 5, in the present embodiment, a performance testing system of a frequency division duplex system is provided, in which on the basis of the fourth embodiment, the position of a duplex module is changed, and the duplex module is disposed before a power divider and after a combiner, specifically, the duplex module is disposed between a splitter and a base station and between the splitter and a terminal.
Specifically, the performance test system of the frequency division duplex mode comprises a control device, an M × N radio frequency matrix, a power supply system and a chassis frame.
The M × N radio frequency matrix comprises an M × N radio frequency matrix, the M × N radio frequency matrix comprises M first ports and N second ports, the M first ports are connected with the base station, the N second ports are connected with the terminals, and the M × N radio frequency matrix is used for receiving M paths of original signals sent by the base station, converting the M paths of original signals into N paths of received signals and sending the N paths of received signals to the terminals through the N second ports.
The M × N RF matrix also includes a duplex module, a phase shift module and a splitter.
The M × N radio frequency matrix is divided into M × N uplink channels and M × N downlink channels by the duplex module, the M × N radio frequency matrix is composed of two M × N channels and the duplex module, namely, the M × N × 2 channels are included in the matrix, wherein one channel is the M × N uplink channel, and the other channel is the M × N downlink channel.
Each first port is connected with a splitter through a duplex module. Each duplex module is connected with a power divider and a combiner. Each second port is connected with a splitter through a duplex module, wherein each duplex module is connected with a power divider and a combiner.
The M downlink original signals sent by the base station are converted into N downlink receiving signals through M × N downlink channels and sent to the terminal, and the N uplink original signals sent by the terminal are converted into M uplink receiving signals through M × N uplink channels and sent to the base station.
In embodiment 5, each uplink channel and each downlink channel are provided with a phase shift and attenuation module, and in addition, the phase shift and attenuation module may be replaced with a phase shift module.
In this embodiment, the duplex module is disposed between the splitter and the base station and between the splitter and the terminal. Namely, the duplex module is arranged in front of the splitter and behind the splitter, and the splitter comprises a power divider and a combiner. At this time, the downstream signal flow sequence in each first port is: the system comprises a base station, a duplex module, a power divider, a phase shift and attenuation module, a combiner, a duplex module and a terminal. The upstream signal flow order in each first port is: the system comprises a terminal, a duplex module, a power divider, a phase shift and attenuation module, a combiner, a duplex module and a base station.
The M × N radio frequency matrix comprises M × N × 2 phase shift and attenuation modules, preferably, M is 2, 4, 8, 16, 32, 64, 128 and 256, and N is 2, 4, 8, 16, 32, 64, 128 and 256 in the M × N radio frequency matrix.
The control device is connected with the M × N radio frequency matrix and used for obtaining a target beam angle, obtaining a phase setting value of each channel in the M × N uplink channels and the M × N downlink channels according to the target beam angle and a preset model, and adjusting a phase value of a phase shifting module corresponding to the channel according to the phase setting value of each channel.
Preferably, the preset model is:
PS＝(j-1)*2π*Di/λ*SIN(θ)+(i-1)*2π*Dj/λ*SIN(φ)
the vibration source of the base station antenna butted with the M first ports is an area array of i × j, Di is the distance between the transverse adjacent vibration sources, Dj is the distance between the longitudinal adjacent vibration sources, theta is the angle of the horizontal direction of the wave beam, phi is the angle of the vertical direction of the wave beam, and lambda is the wavelength.
Referring to fig. 7, the base station antenna sources are schematically arranged, and the base station antenna sources butted with the M first ports are planar arrays of i × j, where i × j is equal to M.
In addition, the power supply system is used for supplying power to the control device and the M × N radio frequency matrix, and the control device, the M × N radio frequency matrix and the power supply system are all installed in the chassis frame to jointly form a frequency division duplex system performance test system.
When the system is used, the performance test method of the frequency division duplex system comprises the following contents.
Connecting the M first ports to a T/R port of the base station equipment, and using the M first ports to receive M Downlink (DL) original signals sent by the base station equipment or transmitting Uplink (UL) received signals to the base station equipment; n second ports are connected to each T/R port or R port of the terminal device for delivering a Downlink (DL) received signal to the terminal or for delivering an Uplink (UL) original signal to the terminal device.
Referring to fig. 6, the information flow is transmitted in the direction that M downlink original signals sent by the base station device are converted into N downlink received signals through M × N downlink channels and sent to the terminal, and N uplink original signals sent by the terminal are converted into M uplink received signals through M × N uplink channels and sent to the base station.
The method comprises the steps that a user inputs a target beam angle into a control device, phase setting values of each channel in M × N uplink channels and M × N downlink channels are obtained according to the target beam angle and a preset model, and phase values of phase shifting and attenuation modules of corresponding channels are adjusted according to the phase setting values of each channel.
And during testing, inputting different target beam angles, adjusting the phase value of the corresponding channel, and meanwhile, manually adjusting the attenuation value of the corresponding channel according to the target gain until the target gain is reached. And obtaining test data reported by the terminal, wherein the test data comprises parameters such as throughput rate, signal-to-noise ratio, bit error rate, MCS value and the like and parameter changes, and comparing the test data with expected data.
The invention can simulate the transmission characteristic of FDD system in limited test environment, and accurately test the relative performance of base station or terminal in FDD system, and the invention can calculate the phase value of each channel via the beam angle input by user, and obtain the relative test data reported by terminal while adjusting the angle and gain, and analyze whether the test data is in accordance with the expectation, and the operation is simple.
Embodiments of the present invention also provide a computer readable medium having a non-volatile program code executable by a processor, where the program code causes the processor to execute the method provided by the above method embodiments.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The implementation principle and the generated technical effect of the frequency division duplex system testing method provided by the embodiment of the invention are the same as those of the system embodiment, and for brief description, corresponding contents in the system embodiment can be referred to where no part of the method embodiment is mentioned.
In the several embodiments provided in the present application, it should be understood that the disclosed system and method may be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The above functions, if implemented in the form of software functional units and sold or used as a separate product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the above claims.
Claims (7)
1. A radio frequency matrix of a frequency division duplex system is characterized in that the radio frequency matrix is an M × N radio frequency matrix;
the M × N radio frequency matrix comprises a duplex module, the duplex module divides the M × N radio frequency matrix into M × N uplink channels and M × N downlink channels, each uplink channel and each downlink channel are provided with a phase shifting and attenuating module or a phase shifting module, the M × N radio frequency matrix is used for converting M downlink original signals sent by the base station into N downlink receiving signals through the M × N downlink channels and sending the N downlink receiving signals to the terminal, and the M × N radio frequency matrix is also used for converting N uplink original signals sent by the terminal into M uplink receiving signals through the M × N uplink channels and sending the M uplink receiving signals to the base station.
2. The radio frequency matrix of a frequency division duplexing scheme according to claim 1, wherein the M × N radio frequency matrix includes M first ports and N second ports, the M × N radio frequency matrix further includes a power divider and a combiner;
the power divider is located at the M first ports and is configured to divide an original signal of each first port into N paths of signals;
the combiner is located at the N second ports, and is configured to combine the M original signals into one received signal.
3. A kind of frequency division duplex system performance test system, characterized by that: comprising control means and a radio frequency matrix according to claim 1 or 2;
the control device is connected with the M × N radio frequency matrix, and is used for acquiring a target beam angle, acquiring a phase setting value of each channel in M × N uplink channels and M × N downlink channels according to the target beam angle and a preset model, and adjusting a phase value of a phase shifting and attenuating module or a phase shifting module of a corresponding channel according to the phase setting value of each channel.
4. The system according to claim 3, wherein the system comprises: the preset model is as follows:
PS＝(j-1)*2π*Di/λ*SIN(θ)+(i-1)*2π*Dj/λ*SIN(φ)
the vibration source of the base station antenna butted with the M first ports is an area array of i × j, Di is the distance between the transverse adjacent vibration sources, Dj is the distance between the longitudinal adjacent vibration sources, theta is the angle of the horizontal direction of the wave beam, phi is the angle of the vertical direction of the wave beam, and lambda is the wavelength.
5. The system according to claim 3, wherein the system comprises:
the control device is further used for acquiring the target gain and adjusting the attenuation value of the corresponding channel in real time according to the target gain.
6. The system as claimed in claim 3, wherein in the M × N RF matrix, M is 2, 4, 8, 16, 32, 64, 128, 256, and N is 2, 4, 8, 16, 32, 64, 128, 256.
7. The system according to claim 3, wherein the system comprises: the duplex module is positioned between the power divider and the combiner; or the duplex module is positioned between the splitter and the base station and between the splitter and the terminal.
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