WO2021147250A1

WO2021147250A1 - Radio frequency matrix and test system

Info

Publication number: WO2021147250A1
Application number: PCT/CN2020/098866
Authority: WO
Inventors: 曹宝华; 郑建跤
Original assignee: 南京捷希科技有限公司
Priority date: 2020-01-22
Filing date: 2020-06-29
Publication date: 2021-07-29
Also published as: CN212115332U; CN111565082A; CN111162856A

Abstract

Disclosed are a radio frequency matrix and a test system. The radio frequency matrix is an M×N radio frequency matrix which comprises M first ports and N second ports, each first port is connected to a main port of one 1-to-N power splitter/combiner, and sub-ports of each of the 1-to-N power splitters/combiners are connected in a one-to-one correspondence to sub-ports of each 1-to-M power splitter/combiner. The M×N radio frequency matrix further comprises duplex modules. The duplex modules divide 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 shift module. The problems of complex structures, high costs, and low efficiency of the current FDD simulation test device are solved.

Description

Radio frequency matrix and test system

Technical field

The invention relates to the technical field of communication testing, in particular to a radio frequency matrix and a testing system.

Background technique

At present, with the continuous development of Multiple-Input Multiple-Output (MIMO) technology, frequency-division duplex (FDD, Frequency-division Duplex) technology continues to mature, and terminals become more and more abundant. More and more widespread. However, the current test solution for FDD is not mature enough, and the traditional FDD (Frequency-division Duplex Frequency Division Duplex) test solution is still used. However, due to the complexity of the FDD channel, the traditional test solution is more complicated, and the traditional FDD There is no ideal laboratory test system and environment to simulate such channels, which makes the traditional FDD test program more complicated. The current test solutions for FDD are not mature enough. The current test solutions are for testing in the R&D phase, with complex structure, inconvenient operation, slow environment construction, and low cost performance. Especially for the performance verification of multi-channel beam synthesis for super-large-scale antenna array base stations, the industry does not have a convenient and efficient system solution.

Therefore, in response to the current FDD development and test requirements, it is urgent to propose a technical solution for radio frequency matrix and test system, which can simplify the operation process, improve the test efficiency, and can serve the global cellular communications, especially the base station equipment vendors in the industry, Antenna equipment vendors, operators, terminal vendors, scientific research institutes and other institutions.

Summary of the invention

The present invention provides the purpose of the present invention to provide a radio frequency matrix and test system, which solves the technical problem that the traditional test scheme is complicated and cannot be tested in a laboratory analog channel.

In order to solve the above technical problems, the present invention provides:

A radio frequency matrix, including M first ports and N second ports, each first port is connected to the main port of a one-point N power splitter/combiner, and each second port is connected to a one-point M The main port of the power splitter/combiner, one split port of each one-point N power splitter/combiner and one split port of each one-point M power split/combiner are connected with a phase shifting module to form A radio frequency channel;

The radio frequency matrix also includes a duplex module, and the duplex module is also connected between a split port of each one-point N power splitter/combiner and a split port of each one-point M power splitter/combiner. Module, or, the duplex module is connected between each first port and the main port of a one-point N power splitter/combiner, and each second port is connected to a one-point M power splitter/combiner The duplex module is connected between the main ports;

The duplex module divides the radio frequency channels in the radio frequency matrix into M×N uplink channels and M×N downlink channels, and each uplink channel and each downlink channel is connected with a phase shift module.

Further, when the duplex module is connected between the split port of the one-point N power splitter/combiner and the split port of the one-point M power splitter/combiner, the number of the duplex modules Is M×N×2, the number of the one-point N power splitter/combiner is M, the number of the one-point M power splitter/combiner is N, and each one-point N power splitter Two duplex modules are connected between a split port of the splitter/combiner and a split port of each one-point M power split/combiner, among which, the main port of one duplex module is connected to a one-point N power splitter / Splitter of the combiner, the main port of the other duplex module is connected to the split port of a M power split/combiner, and two phase shift modules are connected between the split ports of the two duplex modules to form an uplink Channel and downlink channel.

Further, when the duplex module is connected between the main port and the first port of the one-way N power splitter/combiner and between the main port and the second port of the one-way M power splitter/combiner When the number of duplex modules is M+N, the number of one-point N power splitters/combiners is 2×M, and the number of one-point M power splitters/combiners 2×N, each first port is connected to the main port of a duplex module and the split port of the duplex module is connected to the main port of two one-way N power splitter/combiners, and each second port is connected to the main port of a duplex module. Connect the main port of a duplex module and the split port of the duplex module is connected to the main ports of two one-way M power splitter/combiners.

Further, the duplex module is one of the following: a duplexer and a circulator.

Further, the duplex module is one of the following: a combination of multiple circulators, a combination of a duplexer and a circulator, a combination of a duplexer and an isolator, and a combination of a circulator and an isolator.

Further, the duplex module includes: a single duplexer and two circulators, one end of the two circulators is respectively connected to the input end and the output end of the duplexer.

Further, the duplex module includes: a single circulator and two isolators, and the two isolators are respectively connected to different ends of the circulator.

Further, the duplex module includes: a single duplexer and two isolators, and the two isolators are respectively connected to different ends of the duplexer.

Further, the phase shift module is any one of the following: a phase shift component, a phase shift attenuation component, a combination of a phase shift component and an attenuation component.

In another aspect, the present invention provides a test system, including a control device and the radio frequency matrix described in any one of the above;

The control device is connected to the radio frequency matrix, and the control device is used to obtain the target beam angle, and obtain the M×N uplink channel and M×N downlink channel according to the target beam angle and a preset model. Set the phase value, and adjust the phase value of the corresponding channel according to the phase setting value of each channel.

The radio frequency matrix and test system of duplex mode provided by the present invention have the following beneficial effects:

(1) The test system provided by the present invention can simulate the transmission characteristics of the FDD standard under a limited test environment, and accurately test the relevant performance of the base station or the terminal under the FDD standard.

(2) The test system provided by the present invention can reversely calculate the phase value of each channel through the target beam angle input by the user, while adjusting the angle, obtain the relevant test data reported by the terminal, and analyze whether the test data meets expectations , User operation is simple.

(3) In the test system provided by the present invention, the duplex module is used to separate the uplink channel and the downlink channel, and the external is still an overall M×N radio frequency matrix. There are actually two M×N channels, the uplink channel and the downlink channel. Will not interfere with each other, and the test accuracy is high.

In summary, the radio frequency matrix and test system provided by the present invention builds FDD through equipment such as one-point N power splitter/combiner, duplex module, phase shift module, and one-point M power splitter/combiner. The simulation test equipment solves the problems of complex structure, high cost and low efficiency of the current FDD simulation test equipment, which improves the test efficiency while ensuring the accuracy of the test results.

Description of the drawings

In order to explain the technical solution of the present invention more clearly, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a radio frequency matrix of the first duplex system provided by an embodiment of the present invention;

2 is a schematic structural diagram of a radio frequency matrix of a second duplex system provided by an embodiment of the present invention;

3 is a schematic structural diagram of a radio frequency matrix of a third duplex system provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a fourth duplex system radio frequency matrix provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a radio frequency matrix of a fifth duplex system provided by an embodiment of the present invention;

6 is a schematic structural diagram of a radio frequency matrix of a sixth duplex system provided by an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a radio frequency matrix of a seventh duplex system provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a first type of duplex module provided by an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a second type of duplex module provided by an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a third type of duplex module provided by an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a fourth type of duplex module provided by an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a fifth duplex module provided by an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a sixth type of duplex module provided by an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of an information flow direction provided by an embodiment of the present invention;

15 is a schematic diagram of a base station antenna vibration source arrangement provided by an embodiment of the present invention;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Aiming at the current testing requirements of FDD, the present invention develops a radio frequency matrix that simulates the transmission characteristics of the frequency division duplex (FDD) standard, a performance testing system and method, and serves the global cellular communications industry.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, device, product, or device that includes a series of steps or units is not necessarily limited to those clearly listed. Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment.

Example 1

As shown in Figures 1-7, the present invention provides a radio frequency matrix. The radio frequency matrix is an M×N radio frequency matrix; it includes M first ports and N second ports, and each first port is connected to each other. The main port of the N power splitter/combiner, each second port is connected to the main port of a one-point M power splitter/combiner, and each one of the N-power splitter/combiner's split port and each A phase shifting module is connected between one split port of a power splitter/combiner to form a radio frequency channel. Among them, the power splitter/combiner can combine multiple signals into one channel, or divide a signal into one channel. Multiple signals.

The one-point-N power splitter/combiner is used to divide the original signal transmitted by the first port into N-channel signals and transmit it to a split port of each one-point M power splitter/combiner, or to divide each one-to-M power splitter/combiner. The N original signals of one port of the power splitter/combiner are combined into one signal and transmitted to the first port; the one-divided M power splitter/combiner is used to divide the original signal transmitted by a second port into M signals Transmit to one port of each one-way N-power splitter/combiner, or combine the original M-channel signals from one port of each one-way N-power split/combiner into one signal and transmit it to the second port.

The radio frequency matrix also includes a duplex module, and the duplex module is also connected between one split port of each one-point N power splitter/combiner and one split port of each one-point M power splitter/combiner. Module, or, the duplex module is connected between each first port and the main port of a one-point N power splitter/combiner, and each second port is connected to a one-point M power splitter/combiner The duplex module is connected between the main ports.

The M×N radio frequency matrix is used to convert the M downlink original signals sent by the base station into N downlink received signals through M×N downlink channels and send them to the terminal; the M×N radio frequency matrix is also used to transmit the original N routes sent by the terminal. The signal is converted into an M line receiving signal through the M×N line channel and sent to the base station.

Among them, the duplex module has a main port and two sub ports. The main port is a common port that can receive and transmit signals. One sub port is used to receive signals, and the other sub port is used to transmit signals.

Based on the above-mentioned embodiment, in an embodiment of this specification, when the duplex module is connected to the split port of the one-point N power splitter/combiner and the split port of the one-point M power splitter/combiner At times, the number of duplex modules is M×N×2, the number of one-point N power splitters/combiners is M, and the number of one-point M power splitters/combiners is M. The number is N. There are two duplex modules connected between one port of each one-point N power splitter/combiner and each one-point M power splitter/combiner, one of which is a dual The main port of the industrial module is connected to the split port of the one-point N power splitter/combiner, the main port of the other duplex module is connected to the split port of the one-point M power splitter/combiner, and one of the split ports of the two duplex modules There are two phase shift modules connected in between to form an uplink channel and a downlink channel.

Specifically, the radio frequency matrix includes: M one-way N power splitters/combiners, N×M first duplex modules, N×M×2 phase shifting modules, M×N second Duplex module and N one-point M power splitter/combiner;

As an example, as shown in Figure 1-3, the main port of each one-to-N power splitter/combiner can be connected to the vibration source of the base station through the first port, and the connection method can be a conductive communication connection. The N split ports of a one-point N power splitter/combiner can be connected to the main ports of the N first duplex modules in a one-to-one correspondence. The embodiment of this specification takes the duplexer as an example, and each first duplex module The split port can be connected to one end of a first phase shifting module in a one-to-one correspondence, the other end of the first phase shifting module can be connected to the split port of the second duplex module, and the main port of the second duplex module is in accordance with the one The communication address of the N-point power splitter/combiner is connected to the corresponding split port of the one-point M power splitter/combiner, and the main port of the one-point M power splitter/combiner connects all corresponding second duplex modules The transmitted signals are combined and transmitted to the target terminal. Fig. 14 is a schematic structural diagram of an information flow direction provided by an embodiment of the present invention. As shown in Fig. 14, the original downlink signal sent by the base station's vibration source is split into N pieces of identical signals through a one-to-N power splitter/combiner. Signal, each signal is transmitted to the corresponding one-point M power splitter/combiner through the first duplex module, phase shift module and second duplex module, and then transmitted to the corresponding one-point M power splitter/combiner through the integration of the one-point M power splitter/combiner Target terminal to form M×N downlink channels. When the target terminal sends the original uplink signal, it is split into M identical signals by a split M power splitter/combiner, and each signal is transmitted to the corresponding signal through the second duplex module, the phase shift module, and the first duplex module. The one-point-N power splitter/combiner is integrated by the one-point N power splitter/combiner and then transmitted to the base station to form an M×N on-road channel.

On the basis of the above-mentioned embodiment, in another embodiment of this specification, when the duplex module is connected between the main port and the first port of the one-point N power splitter/combiner and the one-point M power splitter/ Between the main port and the second port of the combiner, the number of the duplex modules is M+N, the number of the one-to-N power splitter/combiner is 2×M, and the The number of one-point M power splitter/combiners is 2×N, and each first port is connected to the main port of a duplex module and the split port of the duplex module is connected to two one-point N power splitter/combiners For the main port of the router, each second port is connected to the main port of a duplex module and the split port of the duplex module is connected to the main ports of two one-way M power splitters/combiners.

As an example, as shown in Figure 5-7, the radio frequency matrix includes: M third duplex modules connected in sequence, 2×M one-way N power splitters/combiners, and N×M×2 phase shifters Module, 2×N one-point M power splitter/combiner and N fourth duplex modules;

The main port of each third duplex module can be connected to the vibration source of the base station through the first port, and the connection method can be connected by conducting communication. The sub-port of each third duplex module can be connected to a one-point N The main ports of the power splitter/combiner are connected one-to-one, and the split ports of the one-point N power splitter/combiner are connected to one end of the second phase-shifting module one-to-one, and the other end of the second phase-shifting module is connected according to one-point N The communication address of the power splitter/combiner corresponds to the split port connected to the one-point M power splitter/combiner, and the main port of the one-point M power splitter/combiner is connected to the fourth duplex according to the communication address of the third duplex module The sub-port of the module, the second port of the main port of the fourth duplex module is connected to the target terminal. The original downlink signal sent by the vibration source of the base station is transmitted to the one-point N-power splitter/combiner through the third duplex module, and is split into N same signals by the one-point N power splitter/combiner, and each signal passes through After the phase shifting module, it is transmitted to the corresponding fourth duplex module through the convergence of a division M power division/combiner, and then transmitted to the target terminal after passing through the fourth duplex module to form an M×N downlink channel. The original uplink signal sent by the target terminal is transmitted to the one-way N-power splitter/combiner through the fourth duplex module, and is split into M identical signals through the one-way N power splitter/combiner, and each signal is phase-shifted The module is then transmitted to the corresponding fourth duplex module through the convergence of a M power splitter/combiner, and then transmitted to the base station after the fourth duplex module to form an M×N on-road channel.

It is understandable that both the one-point N power splitter/combiner and the one-point M power splitter/combiner can split a signal into two or more signals with equal or unequal output, or two Channel or multiple channels output equal or unequal signals converge into one signal.

It should be noted that M one-to-N power splitters/combiners, N×M first duplex modules, N×M×2 phase shift modules, M×N second duplex modules, and N one Between M power divider/combiner, or M third duplex module, 2×M one-point N power divider/combiner, N×M×2 phase shift modules, 2×N one-point The M power splitter/combiner and the N fourth duplex modules are all connected by means of radio frequency cables.

The duplex performance test system provided by the present invention can simulate the transmission characteristics of the FDD standard under a limited test environment, and accurately test the relevant performance of the base station or the terminal under the FDD standard. The duplex performance test system provided by the present invention can reversely calculate the phase value of each channel through the target beam angle input by the user, while adjusting the angle, obtain the relevant test data reported by the terminal, and analyze whether the test data meets expectations , User operation is simple. In the duplex performance test system provided by the present invention, the duplex module is used to separate the uplink channel and the downlink channel to form an M×N radio frequency matrix externally. There are actually two M×N channels, and the uplink channel and the downlink channel will not interact with each other. Interference, high test accuracy.

On the basis of the foregoing embodiment, in an embodiment of this specification, the duplex module is one of the following: a duplexer and a circulator.

Specifically, FIG. 8 is a schematic structural diagram of the first type of duplex module provided by an embodiment of the present invention. As shown in FIG. 8, the duplex module may be a duplexer, and the duplexer has 3 terminals, which defines the uplink The channel is the channel between the end a and the end b, and the downlink is defined as the channel between the end c and the end a. The allowable signals of the uplink channel and the downlink channel are different to achieve the purpose of duplexing.

The duplex module may be a circulator. FIG. 9 is a schematic structural diagram of the second duplex module provided by an embodiment of the present invention. As shown in FIG. 9, the circulator has 3 terminals, and the downstream channel is defined from terminal d to terminal d to The channel of end e defines the uplink channel as the channel from end f to end d, and the intermediate channel is defined as the channel from end e to end f. The channel uplink channel, intermediate channel and downlink channel are all unidirectional channels to achieve the purpose of duplexing.

On the basis of the foregoing embodiment, in an embodiment of this specification, the duplex module is one of the following: a combination of multiple circulators, a combination of a duplexer and a circulator, a combination of a duplexer and an isolator, and a circulator The combination of a filter and an isolator.

It can be understood that the duplex module may be a combination of multiple circulators, a combination of a duplexer and a circulator, a combination of a duplexer and an isolator, or a combination of a circulator and an isolator. Through the combination, the isolation between channels can be improved.

For example, as shown in FIG. 10, FIG. 10 is a schematic structural diagram of a third type of duplex module provided by an embodiment of the present invention; the duplex module may be a combination of three circulators, that is, the duplex module includes a first circulator, The second circulator and the third circulator, the first end d of the first circulator can be connected to the first port or one of the N output ports of the one-to-N power splitter/combiner or to the M first ports, The second end e of the first circulator is connected with the first end d of the second circulator, the third end f of the first circulator is connected with the first end d of the third circulator, and the second end of the second circulator is connected e is connected to the input or output of the phase shifting module and the one-to-N power splitter/combiner, the third end f of the second circulator and the second end e of the third circulator are both connected to the load, the third circulator The third terminal f of is connected to the input terminal or output terminal of the phase shifting module and the one-to-N power splitter/combiner.

On the basis of the foregoing embodiment, in an embodiment of this specification, the duplex module includes: a single duplexer and two circulators, one end of the two circulators is respectively connected to the input end and the output end of the duplexer.

Specifically, as shown in FIG. 11, FIG. 11 is a schematic structural diagram of a fourth type of duplex module provided by an embodiment of the present invention. The duplex module may be a combination of a duplexer and two circulators, that is, the duplex module includes The duplexer, the first circulator and the second circulator, the first end a of the duplexer can be connected to the first port or one of the N output ports of the one-to-N power splitter/combiner or to the M-th One port, the second end b of the duplexer is connected to the first end d of the first circulator, the third end c of the duplexer is connected to the first end d of the second circulator, and the second end of the first circulator is connected Terminal e is connected to the input or output of the phase shifting module and the one-to-N power splitter/combiner, the third terminal f of the first circulator and the second terminal e of the second circulator are both connected to the load, and the second loop The third terminal f of the converter is connected to the input terminal or the output terminal of the phase shifting module and the one-to-N power splitter/combiner.

On the basis of the foregoing embodiment, in an embodiment of this specification, the duplex module includes: a single circulator and two isolators, and the two isolators are respectively connected to different ends of the circulator.

Specifically, as shown in FIG. 12, FIG. 12 is a schematic structural diagram of a fifth type of duplex module provided by an embodiment of the present invention. The duplex module may be a combination of a circulator and two isolators, that is, the duplex module includes a ring The first end d of the circulator can be connected to the first port or one of the N output ports of the one-to-N power splitter/combiner or to the M first ports, The second end e of the circulator is connected to the first end g1 of the first isolator, the third end f of the circulator is connected to the second end g2 of the second isolator, and the second end g2 of the first isolator is connected to the phase shifter. The input end or output end of the module, the one-point N power splitter/combiner is connected, and the first terminal g1 of the second isolator is connected to the input or output end of the phase shift module and the one-point N power splitter/combiner.

On the basis of the foregoing embodiment, in an embodiment of this specification, the duplex module includes: a single duplexer and two isolators, and the two isolators are respectively connected to different ends of the duplexer.

Specifically, as shown in FIG. 13, FIG. 13 is a schematic structural diagram of a sixth type of duplex module provided by an embodiment of the present invention. The duplex module may be a combination of a duplexer and two isolators, that is, the duplex module includes The duplexer, the first isolator and the second isolator, the first end a of the circulator can be connected to the first port or one of the N output ports of the one-to-N power splitter/combiner or to the M first Port, the second end b of the duplexer is connected to the first end g1 of the first isolator, the third end c of the duplexer is connected to the second end g2 of the second isolator, and the second end of the first isolator g2 is connected to the input or output end of the phase shifting module and the one-point N power splitter/combiner, and the first terminal g1 of the second isolator is connected to the input terminal or the phase shifting module and the one-point N power splitter/combiner. The output terminal is connected.

The radio frequency matrix of the duplex system provided in the embodiment of this specification can ensure that the wireless environment where the uplink channel and the downlink channel propagate are subject to low frequency selective fading and ensure the accuracy of the test result.

Based on the foregoing embodiment, in an embodiment of this specification, the first phase shifting module and the second phase shifting module are one of the following: a phase shifting component, a phase shifting component and an attenuation component, and a phase shifting attenuation component.

Specifically, the first phase shifting module and the second phase shifting module may be phase shifting components that can adjust the original beam angle, or they can be phase shifting components, attenuation components, and phase shifting attenuation components that can adjust the original beam angle and gain. It is understood that the phase-shifting attenuation component is a component in which the phase-shifting component and the attenuation component are integrated into one component.

In the embodiments of this specification, the first phase shifting module and the second phase shifting module can adjust the phase value and gain of the original signal, and can improve the stability of the adaptive internal connection structure of the duplex radio frequency matrix.

Based on the foregoing embodiment, in an embodiment of this specification, as shown in FIG. 2 and FIG. 6, when the first phase shifting module and the second phase shifting module are the phase shifting components, the method further includes: N first attenuation components, one end of each first attenuation component is connected to the first one-to-one power splitter/combiner in a one-to-one correspondence, and the other end of the first attenuation component is used to connect the Target terminal

Or, it further includes: 2×N second attenuation components, one end of the second attenuation component is connected to the second one-to-one M power splitter/combiner in a one-to-one correspondence, and the other end of the second attenuation component Used to connect to the target terminal.

It is understandable that the number of second attenuation components can be N or 2×N, and the specific setting position can be set according to actual needs, and can be set in the base station, the first one-to-N power splitter/combiner, The first duplex module, the first phase shift module, the second duplex module, the first one-division M power splitter/combiner and any position of the target terminal can also be set in the base station, the third duplex module, and the second duplex module. Any position of the one-point N power splitter/combiner, the second phase shift module, the second one-point M power splitter/combiner, the fourth duplex module and the target terminal.

In the embodiments of this specification, the first phase shifting module and the second phase shifting module can adjust the phase value and gain of the original beam, and can improve the stability of the adaptive internal connection structure of the duplex radio frequency matrix.

Example 2

A test system includes a control device, the M×N radio frequency matrix in Embodiment 1, a power supply system, and a chassis frame.

The control device is connected to the M×N radio frequency matrix, and the control device is used to obtain the target beam angle, and obtain each of the M×N on-road channels and the M×N downlink channels according to the target beam angle and a preset model. Setting the phase value of each channel, and adjusting the phase shifting and attenuation module or the phase value of the phase shifting module of the corresponding channel according to the phase setting value of each channel.

The M×N radio frequency matrix includes an M×N radio frequency matrix, and the M×N radio frequency matrix includes M first ports and N second ports. The M first ports are connected to the base station, and the N second ports are connected to the terminal. The base station sends out M original signals. The M×N radio frequency matrix receives the M original signals sent by the base station and converts the M original signals into N received signals, and Sent to the terminal via N second ports.

The M×N radio frequency matrix also includes a duplex module, a phase shift module, and a splitter. The splitter includes a one-point N power splitter/combiner and a one-point M power splitter/combiner. In this embodiment, the one-point N power splitter/combiner is one-point N radio frequency, one-point N power splitter/combiner. The one-point M power splitter/combiner is a 1/M radio frequency one-point M power splitter/combiner.

Each first port is equipped with an N radio frequency, one N power divider/combiner, and the main port of the one N radio frequency, one N power divider/combiner receives an original signal, and divides this original signal. For N signals, M first ports are equipped with M one-point N radio frequency one-point N power splitter/combiner, each one-point N radio frequency one point N power splitter/combiner connects each first port The original signal is divided into N channels; each second port is equipped with a 1/M radio frequency, one division, M power division/combiner, and the main port of the 1/M radio frequency, one division, M power division/combiner, M The original signals are combined into one received signal.

The duplex module divides the 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 to the outside, but it is actually composed of two M×N channels + duplex modules, including M×N×2 channels, one of which is an M×N uplink channel , One channel is M×N downlink channel.

The original M downlink signals sent by the base station are converted into N downlink reception signals through M×N downlink channels and sent to the terminal; the original N uplink signals sent by the terminal are converted into M uplink reception signals by M×N uplink channels and sent to the terminal. Base station.

In Embodiment 2, each upstream channel and each downstream channel is equipped with a phase shift module. Preferably, in this embodiment, the duplex module is located between the one-point N power splitter/combiner and the one-point M power splitter/combiner, that is, each one-point N power splitter/combiner and phase shifter There is a duplex module between the modules, and a duplex module is arranged between each one-division M power splitter/combiner and the phase shift module. Specifically, referring to Figure 1, each split port of the one-point N radio frequency one-point N power splitter/combiner is connected to the main port of a duplexer, and each split port of the duplexer is connected to a phase shifting module. Each split port of the 1/M radio frequency one split M power splitter/combiner is connected to a duplexer, and each split port of the duplexer is connected to the above-mentioned phase shifting module.

Since each upstream channel and each downstream channel are provided with a phase shifting module, the M×N radio frequency matrix in the present invention includes M×N×2 phase shifting modules. Preferably, in the M×N radio frequency matrix, M is one of 2, 4, 8, 16, 32, 64, 128, 256, and N is 2, 4, 8, 16, 32, 64, 128, 256. Kind of.

The control device is connected to the M×N radio frequency matrix. The control device is used to obtain the target beam angle, and obtain the phase setting value of each channel in the M×N on-road channel and M×N downlink channel according to the target beam angle and the preset model , And adjust the phase value of the phase shift module of the corresponding channel according to the phase setting of each channel.

Preferably, the preset model is:

PS=(j-1)×2π×Di/λ×SIN(θ)+(i-1)×2π×Dj/λ×SIN(φ)

Among them, the vibration source of the base station antennas connected to the M first ports is an i×j area array, Di is the distance between adjacent horizontal vibration sources, Dj is the distance between adjacent vertical vibration sources, and θ is the horizontal angle of the beam. , Φ is the vertical angle of the beam, and λ is the wavelength.

Referring to FIG. 15, a schematic diagram of the base station antenna vibration source arrangement, the vibration source of the base station antenna connected to the M first ports is an i×j area array, where i×j is equal to M.

In addition, the power supply system is used to supply power to the control device and the M×N radio frequency matrix. The above control device, the M×N radio frequency matrix and the power supply system are all installed in the chassis frame to form a frequency division duplex system performance test system.

When this system is in use, the test methods include the following.

Connect the M first ports to the T/R ports of the base station equipment to receive M downlink (DL) original signals sent by the base station equipment, or to transmit uplink (UL) received signals to the base station equipment; Two ports are connected to each T/R port or R port of the terminal equipment, used to receive signals from the downlink (DL)

Delivered to the terminal, or used to deliver the uplink (UL) original signal to the terminal device.

Referring to Figure 14, the transmission direction of the information flow is that the M downlink original signals sent by the base station equipment are converted into N downlink received signals through M×N downlink channels and sent to the terminal; the N uplink original signals sent by the terminal are passed through M×N The uplink channel is converted to M uplink and the received signal is sent to the base station.

Among them, the user inputs the target beam angle in the control device, and obtains the phase setting value of each of the M×N uplink channels and the M×N downlink channels according to the target beam angle and the preset model; The phase setting of the channel adjusts the phase value of the phase shift module of the corresponding channel.

During the test, input different target beam angles, adjust the phase value of the corresponding channel, and obtain the test data reported by the terminal. The test data includes the throughput rate, signal-to-noise ratio, bit error rate, MCS value and other parameters and parameter changes. The test data is compared with the expected data, and the performance of the base station or terminal is analyzed.

The test system provided by the present invention can simulate the transmission characteristics of the FDD standard under a limited test environment, and accurately test the relevant performance of the base station or the terminal under the FDD standard. Using the test system provided by the present invention, the user can input the beam angle to calculate the phase value of each channel in the reverse direction. While adjusting the angle, the relevant test data reported by the terminal can be obtained, and the user can analyze whether the test data meets expectations. simple. In the test system provided by the present invention, the duplex module is used to separate the uplink channel and the downlink channel, and it is still an overall M×N radio frequency matrix externally. It is actually composed of two M×N channels and duplex modules, the uplink channel and the downlink channel. The channels will not interfere with each other, and the test accuracy is high.

Example 3

Referring to Fig. 2, on the basis of the second embodiment, N attenuation modules are added at the positions of the N second ports. At this time, the M×N radio frequency matrix includes M×N×2 phase shift modules and N attenuation modules.

At this time, the control device is also used to obtain the target gain, and adjust the attenuation value of the corresponding attenuation module in real time according to the target gain.

When the system is in use, you can also manually adjust the attenuation value of the corresponding attenuation module according to the target gain until the target gain is reached.

Example 4

Referring to Figure 3, on the basis of the second embodiment, the phase shifting module of the second embodiment is replaced with a phase shifting and attenuation module. At this time, the M×N radio frequency matrix includes M×N×2 phase shifting and attenuation modules, The phase shift and attenuation module sets the phase shift and attenuation functions, and there is no need to set the attenuation module at this time.

In the fourth embodiment, the control device is also used to obtain the target gain, and adjust the attenuation value of the corresponding channel in real time according to the target gain.

The third embodiment and the fourth embodiment described above are similar to the second embodiment in use.

Connect the M first ports to the T/R ports of the base station equipment to receive M downlink (DL) original signals sent by the base station equipment, or to transmit the uplink (UL) received signals to the base station equipment; The two ports are connected to each T/R port or R port of the terminal device, and are used to transmit downlink (DL) received signals to the terminal, or to transmit uplink (UL) original signals to the terminal device.

During the test, input different target beam angles, adjust the phase value of the corresponding channel, and obtain the test data reported by the terminal. The test data includes the throughput rate, signal-to-noise ratio, bit error rate, MCS value and other parameters and parameter changes, and the test data Compare with expected data and analyze base station or terminal performance.

Among them, you can also manually adjust the attenuation value of the corresponding channel according to the target gain until the target gain is reached. Obtain the test data reported by the terminal, compare the test data with the expected data, and analyze the base station or terminal performance.

The test systems provided in the third and fourth embodiments can simulate the transmission characteristics of the FDD standard under a limited test environment, and accurately test the relevant performance of the base station or terminal under the FDD standard. The test system provided by the present invention can calculate the phase value of each channel in reverse by inputting the beam angle by the user, and adjust the attenuation value of the channel according to the real-time gain to achieve the setting of the target gain. While adjusting the angle and gain, the relevant test data reported by the terminal is obtained, and whether the test data meets expectations is analyzed, and the user operation is simple. In the test system provided by the present invention, the duplex module is used to separate the uplink channel and the downlink channel, and the external is still a whole M×N radio frequency matrix, which is actually composed of two M×N channels and duplex modules, the uplink channel and the downlink channel. The channels will not interfere with each other, and the test accuracy is high.

Example 5

Referring to Figures 4 and 5, this embodiment provides a test system. On the basis of the fourth embodiment, the position of the duplex module is changed, and the duplex module is set before the one-point N power splitter/combiner and After the one-to-M power splitter/combiner, the duplex module is specifically set between the splitter and the base station and between the splitter and the terminal.

Specifically, a test system includes a control device, an M×N radio frequency matrix, a power supply system, and a chassis frame.

The M×N radio frequency matrix includes an M×N radio frequency matrix, and the M×N radio frequency matrix includes M first ports and N second ports. The M first ports are connected to the base station, and the N second ports are connected to the terminal. The M×N radio frequency matrix is used to receive M original signals sent by the base station and convert the M original signals into N received signals, and pass the N second The port is sent to the terminal.

The M×N radio frequency matrix also includes a duplex module, a phase shift module and a splitter. The splitter includes a one-point N power splitter/combiner and a one-point M power splitter/combiner.

The duplex module divides the M×N radio frequency matrix into M×N uplink channels and M×N downlink channels. The M×N radio frequency matrix is composed of two M×N channels and duplex modules, which includes a total of M×N×2 channels, one of which is M×N uplink channel, and the other is M×N downlink channel.

A splitter is connected to each first port through a duplex module. Among them, each duplex module is connected to a one-point N power splitter/combiner and one-point M power splitter/combiner. Each second port is connected to a splitter through a duplex module, and each duplex module is connected to a split N power splitter/combiner and a split M power splitter/combiner.

In Embodiment 5, each upstream channel and each downstream channel are provided with a phase shift and attenuation module. In addition, the phase shift and attenuation module can be replaced with a phase shift module.

In this embodiment, the duplex module is arranged between the splitter and the base station and between the splitter and the terminal. That is, the duplex module is set before the splitter and after the splitter. The splitter includes a one-point N power splitter/combiner and a one-point M power splitter/combiner. At this time, the flow sequence of the downlink signal in each first port is: base station, duplex module, one-point N power splitter/combiner, phase shift and attenuation module, one-point M power splitter/combiner, duplex Modules, terminals. The flow sequence of the uplink signal in each first port is: terminal, duplex module, one-point N power splitter/combiner, phase shift and attenuation module, one-point M power splitter/combiner, duplex module, base station .

In the present invention, the M×N radio frequency matrix includes M×N×2 phase shift and attenuation modules. Preferably, in the M×N radio frequency matrix, M is 2, 4, 8, 16, 32, 64, 128, 256, and N is 2, 4, 8, 16, 32, 64, 128, 256.

Preferably, the preset model is:

PS=(j-1)×2π×Di/λ×SIN(θ)+(i-1)×2π×Dj/λ×SIN(φ)

In addition, the power supply system is used to supply power to the control device and the M×N radio frequency matrix. The above control device, the M×N radio frequency matrix, and the power supply system are all installed in the chassis frame to form a test system.

When this system is in use, the test methods include the following.

Among them, the user inputs the target beam angle in the control device, and obtains the phase setting value of each of the M×N uplink channels and the M×N downlink channels according to the target beam angle and the preset model; The phase setting value of the channel adjusts the phase value of the phase shift and attenuation module of the corresponding channel.

During the test, input different target beam angles and adjust the phase value of the corresponding channel. At the same time, according to the target gain, manually adjust the attenuation value of the corresponding channel until the target gain is reached. Obtain the test data reported by the terminal, the test data including throughput rate, signal-to-noise ratio, bit error rate, MCS value and other parameters and parameter changes, and compare the test data with expected data.

The test system provided by the present invention can simulate the transmission characteristics of the FDD standard under a limited test environment, and accurately test the relevant performance of the base station or the terminal under the FDD standard. Using the test system provided by the present invention, the user can input the beam angle to calculate the phase value of each channel in the reverse direction. While adjusting the angle and gain, obtain the relevant test data reported by the terminal, and analyze whether the test data meets expectations, User operation is simple. In the test system provided by the present invention, the duplex module is used to separate the uplink channel and the downlink channel, and it is still an overall M×N radio frequency matrix externally. It is actually composed of two M×N channels and duplex modules, the uplink channel and the downlink channel. The channels will not interfere with each other, and the test accuracy is high.

The embodiment of the present invention also provides a computer readable medium having non-volatile program code executable by the processor, and the program code causes the processor to execute the method provided in the foregoing method embodiment.

It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. For the same and similar parts between the various embodiments, refer to each other. Can. The test method provided in the embodiment of the present invention has the same implementation principles and technical effects as the foregoing system embodiment. For a brief description, for the parts not mentioned in the method embodiment, please refer to the corresponding content in the foregoing system embodiment.

In the several embodiments provided in this application, it should be understood that the disclosed system and method may also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible implementation architecture, functions, and functions of the devices, methods, and computer program products according to multiple embodiments of the present invention. operate. In this regard, each block in the flowchart or block diagram may represent a module, program segment, or part of the code, and the module, program segment, or part of the code contains one or more functions for realizing the specified logic function. Executable instructions. It should also be noted that in some alternative implementations, the functions marked in the block may also occur in a different order from the order marked in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, or they can sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and/or flowchart, and the combination of the blocks in the block diagram and/or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or actions Or it can be realized by a combination of dedicated hardware and computer instructions.

If the above functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks and other media that can store program codes. .

Finally, it should be noted that the above-mentioned embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, but not to limit it. The protection scope of the present invention is not limited thereto, although referring to the foregoing The embodiments describe the present invention in detail, and those skilled in the art should understand that any person skilled in the art can still modify the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention. Or it can be easily conceived of changes, or equivalent replacements of some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be covered by the present invention Within the scope of protection. Therefore, the protection scope of the present invention should be subject to the protection scope of the above claims.

Claims

A radio frequency matrix, characterized in that it includes M first ports and N second ports, each first port is connected to the main port of a one-way N power splitter/combiner, and each second port is connected The main port of a one-minute M power splitter/combiner, a split port of each one-minute N power split/combiner and a split port of each one-minute M power split/combiner are connected with a switch Phase module to form a radio frequency channel;

The radio frequency matrix also includes a duplex module, and the duplex module is also connected between one split port of each one-point N power splitter/combiner and one split port of each one-point M power splitter/combiner. Module; or, the duplex module is connected between each first port and the main port of a one-point N power splitter/combiner, and each second port and a one-point M power splitter/combiner The duplex module is connected between the main ports;

The duplex module divides the radio frequency channels in the radio frequency matrix into M×N uplink channels and M×N downlink channels, and each uplink channel and each downlink channel is connected with a phase shift module.
The radio frequency matrix according to claim 1, wherein when the duplex module is connected to the split port of the one-point N power splitter/combiner and the split port of the one-point M power splitter/combiner, At times, the number of duplex modules is M×N×2, the number of one-point N power splitters/combiners is M, and the number of one-point M power splitters/combiners is M. The number is N. There are two duplex modules connected between one port of each one-point N power splitter/combiner and each one-point M power splitter/combiner, one of which is a dual The main port of the industrial module is connected to the split port of the one-point N power splitter/combiner, the main port of the other duplex module is connected to the split port of the one-point M power splitter/combiner, and one of the split ports of the two duplex modules There are two phase shift modules connected in between.
The radio frequency matrix according to claim 1, wherein when the duplex module is connected between the main port and the first port of the one-point N power splitter/combiner and the one-point M power splitter/combiner Between the main port and the second port of the router, the number of the duplex modules is M+N, the number of the one-to-N power splitter/combiner is 2×M, and the one The number of split-M power splitters/combiners is 2×N, and each first port is connected to the main port of a duplex module and the split port of the duplex module is connected to two one-point N power split/combiners. Each second port is connected to the main port of a duplex module and the split port of the duplex module is connected to the main ports of two one-way M power splitters/combiners.
The radio frequency matrix according to any one of claims 1-3, wherein the duplex module is one of the following: a duplexer and a circulator.
The radio frequency matrix according to any one of claims 1-3, wherein the duplex module is one of the following: a combination of multiple circulators, a combination of a duplexer and a circulator, a duplexer and an isolator Combinations of circulators, circulators and isolators.
The radio frequency matrix according to claim 5, wherein the duplex module comprises: a single duplexer and two circulators, one end of the two circulators is respectively connected to the input end and the output end of the duplexer.
The radio frequency matrix according to claim 5, wherein the duplex module comprises: a single circulator and two isolators, and the two isolators are respectively connected to different ends of the circulator.
The radio frequency matrix according to claim 5, wherein the duplex module comprises: a single duplexer and two isolators, and the two isolators are respectively connected to different ends of the duplexer.
The radio frequency matrix according to claim 1, wherein the phase shift module is any one of the following: a phase shift component, a phase shift attenuation component, a combination of a phase shift component and an attenuation component.
A test system, characterized in that it comprises a control device and the radio frequency matrix according to any one of claims 1 to 9;

The control device is connected to the radio frequency matrix, and the control device is used to obtain the target beam angle, and obtain the M×N uplink channel and M×N downlink channel according to the target beam angle and a preset model. Set the phase value, and adjust the phase value of the corresponding channel according to the phase setting value of each channel.