A radio frequency matrix and test system

Abstract

The invention discloses a radio frequency matrix and a test system. The radio frequency matrix is ​​an M×N radio frequency matrix; it comprises M first ports and N second ports, each of the first ports is connected to a main port of a one-to-N power splitter / combiner, and each of the branch ports of the one-to-N power splitter / combiner is connected to the branch ports of each one-to-M power splitter / combiner in a one-to-one correspondence; the M×N radio frequency matrix also 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 is provided with a phase shift module, thereby solving the problems of complex structure, high cost and low efficiency of current FDD simulation test equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of communication testing, and in particular to a radio frequency matrix and a testing system. Background Art

[0002] At present, with the continuous development of Multiple-Input Multiple-Output (MIMO) technology, the frequency-division duplex (FDD) technology has also been maturing, and the terminals are becoming more and more abundant, and it is becoming more and more widespread in the world. However, the current test solution for FDD is not mature enough, and the traditional FDD (Frequency-division Duplex) test solution is still used. However, due to the complexity of FDD channels, the traditional test solution is relatively complex, and the traditional FDD test solution does not have an ideal laboratory test system and environment to simulate such channels, making the traditional FDD test solution relatively complex. At present, the test solution for FDD is not mature enough. The current test solutions are all for R&D stage testing, with complex structure, inconvenient operation, slow environment construction, and low cost performance. In particular, for the multi-channel beamforming performance verification of ultra-large-scale antenna array base stations, the industry does not have a convenient and efficient system solution.

[0003] Therefore, in view of the current development and testing needs of FDD, it is urgent to propose a technical solution for the RF matrix and test system that can simplify the operating process, improve test efficiency, and serve global cellular communications, especially base station equipment manufacturers, antenna equipment manufacturers, operators, terminal manufacturers, scientific research institutes and other institutions in the industry. Summary of the invention

[0004] The present invention provides a radio frequency matrix and a test system to solve the technical problems that the traditional test scheme is complicated and cannot be tested in a laboratory simulation channel.

[0005] In order to solve the above technical problems, the present invention provides:

[0006] A radio frequency matrix comprises M first ports and N second ports, each first port is connected to a main port of a 1-to-N power splitter / combiner, each second port is connected to a main port of a 1-to-M power splitter / combiner, and a phase shift module is connected between a branch port of each 1-to-N power splitter / combiner and a branch port of each 1-to-M power splitter / combiner to form a radio frequency channel;

[0007] The radio frequency matrix also includes a duplex module, and the duplex module is further connected between a branch port of each one-to-N power splitter / combiner and a branch port of each one-to-M power splitter / combiner, or the duplex module is connected between each first port and a main port of a one-to-N power splitter / combiner, and the duplex module is connected between each second port and a main port of a one-to-M power splitter / combiner;

[0008] 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 are connected to a phase shift module.

[0009] Furthermore, when a duplex module is connected between a branch port of the one-to-N power splitter / combiner and a branch port of the one-to-M power splitter / combiner, the number of the duplex modules is M×N×2, the number of the one-to-N power splitters / combiners is M, the number of the one-to-M power splitters / combiners is N, and two duplex modules are connected between a branch port of each one-to-N power splitter / combiner and a branch port of each one-to-M power splitter / combiner, wherein a main port of one duplex module is connected to a branch port of the one-to-N power splitter / combiner, and a main port of another duplex module is connected to a branch port of the one-to-M power splitter / combiner, and two phase shift modules are connected between the branch ports of the two duplex modules to form an uplink channel and a downlink channel.

[0010] Furthermore, when the duplex module is connected between the main port and the first port of the one-to-N power splitter / combiner and between the main port and the second port of the one-to-M power splitter / combiner, the number of the duplex modules is M+N, the number of the one-to-N power splitters / combiners is 2×M, the number of the one-to-M power splitters / combiners is 2×N, each first port is connected to the main port of a duplex module and the branch port of the duplex module is connected to the main ports of two one-to-N power splitters / combiners, and each second port is connected to the main port of a duplex module and the branch port of the duplex module is connected to the main ports of two one-to-M power splitters / combiners.

[0011] Furthermore, the duplex module is one of the following: a duplexer and a circulator.

[0012] Furthermore, 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.

[0013] Furthermore, 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.

[0014] Furthermore, the duplex module includes: a single circulator and two isolators, and the two isolators are respectively connected to different ends of the circulator.

[0015] Furthermore, the duplex module includes: a single duplexer and two isolators, and the two isolators are respectively connected to different ends of the duplexer.

[0016] Furthermore, the phase shift module is any one of the following: a phase shift component, a phase shift attenuation component, or a combination of a phase shift component and an attenuation component.

[0017] On the other hand, the present invention provides a test system, comprising a control device and any one of the above-mentioned radio frequency matrixes;

[0018] The control device is connected to the RF matrix, and is used to obtain a target beam angle, obtain 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 adjust the phase value of the corresponding channel according to the phase setting value of each channel.

[0019] The present invention provides a duplex radio frequency matrix and a test system, which have the following beneficial effects:

[0020] (1) The test system provided by the present invention can simulate the transmission characteristics of the FDD standard in a limited test environment and accurately test the relevant performance of the base station or terminal under the FDD standard.

[0021] (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, the relevant test data reported by the terminal can be obtained, and the test data can be analyzed to see whether it meets expectations. The user operation is simple.

[0022] (3) In the test system provided by the present invention, a duplex module is used to separate the uplink channel and the downlink channel. Externally, it is still an overall M×N RF matrix, but actually there are two M×N channels. The uplink channel and the downlink channel will not interfere with each other, and the test accuracy is high.

[0023] In summary, the RF matrix and test system provided by the present invention builds an FDD simulation test device through a one-to-N power splitter / combiner, a duplex module, a phase shift module and a one-to-M power splitter / combiner and other devices, which solves the problems of complex structure, high cost and low efficiency of the current FDD simulation test equipment, improves the test efficiency and ensures the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments or prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic structural diagram of a first duplex radio frequency matrix provided in an embodiment of the present invention;

[0026] Figure 2 A schematic structural diagram of a second duplex radio frequency matrix provided in an embodiment of the present invention;

[0027] Figure 3 A schematic structural diagram of a radio frequency matrix of a third duplex system provided in an embodiment of the present invention;

[0028] Figure 4 A schematic structural diagram of a radio frequency matrix of a fourth duplex system provided in an embodiment of the present invention;

[0029] Figure 5 A schematic structural diagram of a fifth duplex radio frequency matrix provided in an embodiment of the present invention;

[0030] Figure 6 A schematic structural diagram of a radio frequency matrix of a sixth duplex system provided in an embodiment of the present invention;

[0031] Figure 7 A schematic structural diagram of a radio frequency matrix of a seventh duplex system provided in an embodiment of the present invention;

[0032] Figure 8 A schematic diagram of the structure of a first duplex module provided in an embodiment of the present invention;

[0033] Fig. 9 A schematic diagram of the structure of a second duplex module provided in an embodiment of the present invention;

[0034] Fig.10 A schematic diagram of the structure of a third duplex module provided in an embodiment of the present invention;

[0035] Fig.11 A schematic structural diagram of a fourth duplex module provided in an embodiment of the present invention;

[0036] Fig.12 A schematic structural diagram of a fifth duplex module provided in an embodiment of the present invention;

[0037] Fig.13 A schematic structural diagram of a sixth duplex module provided in an embodiment of the present invention;

[0038] Fig.14 A structural diagram of an information flow direction provided by an embodiment of the present invention;

[0039] Fig.15 A schematic diagram of a base station antenna source arrangement provided by an embodiment of the present invention; DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] Aiming at the current testing requirements of FDD, the present invention develops a radio frequency matrix, a performance testing system and a method for simulating the transmission characteristics of the frequency division duplex (FDD) format, serving the global cellular communication industry.

[0042] It should be noted that the terms "first", "second", etc. in the specification 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 order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, device, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0043] Example 1

[0044] like Figure 1-7 As shown, the present invention provides a radio frequency matrix, which is an M×N radio frequency matrix; it includes M first ports and N second ports, each first port is connected to the main port of a one-to-N power splitter / combiner, each second port is connected to the main port of a one-to-M power splitter / combiner, and a phase shift module is connected between a branch port of each one-to-N power splitter / combiner and a branch port of each one-to-M power splitter / combiner to form a radio frequency channel, wherein the power splitter / combiner can combine multiple signals into one signal, and can also divide one signal into multiple signals.

[0045] The one-to-N power splitter / combiner is used to split an original signal transmitted from a first port into N signals and transmit them to a branch port of each one-to-M power splitter / combiner, or to combine the N original signals from a branch port of each one-to-M power splitter / combiner into one signal and transmit it to the first port; the one-to-M power splitter / combiner is used to split an original signal transmitted from a second port into M signals and transmit them to a branch port of each one-to-N power splitter / combiner, or to combine the M original signals from a branch port of each one-to-N power splitter / combiner into one signal and transmit it to the second port.

[0046] The RF matrix also includes a duplex module, and the duplex module is connected between a branch port of each one-to-N power splitter / combiner and a branch port of each one-to-M power splitter / combiner, or, the duplex module is connected between each first port and a main port of a one-to-N power splitter / combiner, and the duplex module is connected between each second port and a main port of a one-to-M power splitter / combiner.

[0047] 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 are connected to a phase shift module.

[0048] The M×N RF matrix is ​​used to convert the M downlink original signals sent by the base station into N downlink receiving signals through M×N downlink channels and send them to the terminal; the M×N RF matrix is ​​also used to convert the N uplink original signals sent by the terminal into M uplink receiving signals through M×N uplink channels and send them to the base station.

[0049] The duplex module has a main port and two branch ports, wherein the main port is a common port that can receive and transmit signals, one branch port is used to receive signals, and the other branch port is used to transmit signals.

[0050] On the basis of the above embodiments, in one embodiment of the present specification, when a duplex module is connected between a branch port of the one-to-N power splitter / combiner and a branch port of the one-to-M power splitter / combiner, the number of the duplex modules is M×N×2, the number of the one-to-N power splitters / combiners is M, the number of the one-to-M power splitters / combiners is N, and two duplex modules are connected between a branch port of each one-to-N power splitter / combiner and a branch port of each one-to-M power splitter / combiner, wherein a main port of one duplex module is connected to a branch port of the one-to-N power splitter / combiner, and a main port of another duplex module is connected to a branch port of the one-to-M power splitter / combiner, and two phase shift modules are connected between the branch ports of the two duplex modules to form an uplink channel and a downlink channel.

[0051] Specifically, the radio frequency matrix includes: 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-to-M power splitters / combiners connected in sequence;

[0052] For example, Figure 1-3As shown, 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 method. The N sub-ports of each one-to-N power splitter / combiner can be connected one-to-one with the main ports of N first duplex modules. The embodiment of this specification takes the duplexer as an example. The sub-port of each first duplex module can be connected one-to-one with one end of a first phase shift module, and the other end of the first phase shift module can be connected to the sub-port of the second duplex module. The main port of the second duplex module is connected to the sub-port of the corresponding one-to-M power splitter / combiner according to the communication address of the one-to-N power splitter / combiner. The main port of the one-to-M power splitter / combiner combines the signals transmitted by all corresponding second duplex modules and transmits them to the target terminal. Fig.14 A structural diagram of an information flow direction provided by an embodiment of the present invention, such as Fig.14 As shown, the original downlink signal sent by the vibration source of the base station is split into N identical signals through a one-to-N power splitter / combiner, and each signal is transmitted to the corresponding one-to-M power splitter / combiner through the first duplex module, the phase shift module and the second duplex module, and then transmitted to the target terminal after integration by the one-to-M power splitter / combiner to form M×N downlink channels. When the target terminal sends the original uplink signal, it is split into M identical signals through a one-to-M power splitter / combiner, and each signal is transmitted to the corresponding one-to-N power splitter / combiner through the second duplex module, the phase shift module and the first duplex module, and then transmitted to the base station after integration by the one-to-N power splitter / combiner to form M×N uplink channels.

[0053] Based on the above embodiments, in another embodiment of the present specification, when the duplex module is connected between the main port and the first port of the one-to-N power splitter / combiner and between the main port and the second port of the one-to-M power splitter / combiner, the number of the duplex modules is M+N, the number of the one-to-N power splitters / combiners is 2×M, the number of the one-to-M power splitters / combiners is 2×N, each first port is connected to the main port of a duplex module and the branch port of the duplex module is connected to the main ports of two one-to-N power splitters / combiners, and each second port is connected to the main port of a duplex module and the branch port of the duplex module is connected to the main ports of two one-to-M power splitters / combiners.

[0054] For example, Figure 5-7 As shown, the radio frequency matrix includes: M third duplex modules, 2×M one-to-N power splitters / combiners, N×M×2 phase shift modules, 2×N one-to-M power splitters / combiners and N fourth duplex modules connected in sequence;

[0055] 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 a conductive communication method. The branch port of each third duplex module can be connected to the main port of a one-to-N power splitter / combiner in a one-to-one correspondence. The branch port of the one-to-N power splitter / combiner is connected to one end of the second phase shift module in a one-to-one correspondence. The other end of the second phase shift module is connected to the branch port of the one-to-M power splitter / combiner according to the communication address of the one-to-N power splitter / combiner. The main port of the one-to-M power splitter / combiner is connected to the branch port of the fourth duplex module according to the communication address of the third duplex module. The second port of the main port of the fourth duplex module is connected to the target terminal. The original signal sent downlink by the vibration source of the base station is transmitted to the one-to-N power splitter / combiner through the third duplex module, and is split into N identical signals through the one-to-N power splitter / combiner. After each signal passes through the phase shift module, it is aggregated and transmitted to the corresponding fourth duplex module through the one-to-M power splitter / combiner, and then transmitted to the target terminal after passing through the fourth duplex module to form M×N downlink channels. The original uplink signal sent by the target terminal is transmitted to the one-to-N power splitter / combiner through the fourth duplex module, and is split into M identical signals by the one-to-N power splitter / combiner. Each signal passes through the phase shift module and then is aggregated by the one-to-M power splitter / combiner and transmitted to the corresponding fourth duplex module. After passing through the fourth duplex module, it is transmitted to the base station to form an M×N uplink channel.

[0056] It can be understood that both the one-to-N power splitter / combiner and the one-to-M power splitter / combiner can split one signal into two or more signals with equal or unequal outputs, or can combine two or more signals with equal or unequal outputs into one signal.

[0057] It should be noted that M 1-to-N power splitters / combiners, N×M first duplex modules, N×M×2 phase shift modules, M×N second duplex modules and N 1-to-M power splitters / combiners, or M third duplex modules, 2×M 1-to-N power splitters / combiners, N×M×2 phase shift modules, 2×N 1-to-M power splitters / combiners and N fourth duplex modules are all connected by means of RF cables.

[0058] The duplex performance test system provided by the present invention can simulate the transmission characteristics of the FDD standard in a limited test environment, and accurately test the relevant performance of the base station or 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, and obtain the relevant test data reported by the terminal while adjusting the angle, and analyze whether the test data meets expectations, and the 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, and an M×N RF matrix is ​​formed externally. In fact, there are two M×N channels, and the uplink channel and the downlink channel will not interfere with each other, and the test accuracy is high.

[0059] Based on the above embodiments, in one embodiment of the present specification, the duplex module is one of the following: a duplexer and a circulator.

[0060] Specifically, Figure 8 A schematic diagram of the structure of a first duplex module provided in an embodiment of the present invention is shown in FIG. Figure 8 As shown, the duplex module can be a duplexer, which has three ends, and the uplink channel is defined as the channel between end a and end b, and the downlink is defined as the channel between end c and end a. The uplink channel and the downlink channel allow different signals to pass through, so as to achieve the purpose of duplexing.

[0061] The duplex module may be a circulator, Fig. 9 A schematic diagram of the structure of a second duplex module provided in an embodiment of the present invention is shown in FIG. Fig. 9 As shown, the circulator has three ends. The downlink channel is defined as the channel from end d to end e, the uplink channel is defined as the channel from end f to end d, and the middle channel is defined as the channel from end e to end f. The uplink channel, middle channel and downlink channel are all unidirectional channels to achieve the purpose of duplex.

[0062] Based on the above embodiments, in one embodiment of the present 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 combination of a circulator and an isolator.

[0063] It is understandable that the duplex module can 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.

[0064] For example, Fig.10 As shown, Fig.10 A structural schematic diagram of a third duplex module provided for an embodiment of the present invention; the duplex module can be a combination of three circulators, that is, the duplex module includes a first circulator, a second circulator and a 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 a one-to-N power splitter / combiner or connected to M first ports, the second end e of the first circulator is connected to the first end d of the second circulator, the third end f of the first circulator is connected to the first end d of the third circulator, the second end e of the second circulator is connected to the input end or output end 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 a load, and the third end f of the third circulator is connected to the input end or output end of the phase shifting module and the one-to-N power splitter / combiner.

[0065] Based on the above embodiments, in one embodiment of the present specification, the duplex module includes: a single duplexer and two circulators, and one end of the two circulators is respectively connected to the input end and the output end of the duplexer.

[0066] Specifically, Fig.11 As shown, Fig.11 A structural schematic diagram of a fourth duplex module provided in an embodiment of the present invention, wherein the duplex module may be a combination of a duplexer and two circulators, that is, the duplex module includes a duplexer, a first circulator and a second circulator, wherein the first end a of the duplexer may be connected to a first port or one of N output ports of a one-way N power splitter / combiner or connected to M first ports, the second end b of the duplexer is connected to a first end d of the first circulator, the third end c of the duplexer is connected to a first end d of the second circulator, the second end e of the first circulator is connected to an input end or an output end of a phase shifting module or a one-way N power splitter / combiner, the third end f of the first circulator and the second end e of the second circulator are both connected to a load, and the third end f of the second circulator is connected to an input end or an output end of the phase shifting module or the one-way N power splitter / combiner.

[0067] Based on the above embodiments, in one embodiment of the present specification, the duplex module includes: a single circulator and two isolators, and the two isolators are respectively connected to different ends of the circulator.

[0068] Specifically, Fig.12 As shown, Fig.12 A structural schematic diagram of the fifth duplex module provided for an embodiment of the present invention, wherein the duplex module may be a combination of a circulator and two isolators, that is, the duplex module includes a circulator, a first isolator and a second isolator, the first end d of the circulator may be connected to the first port or one of the N output ports of a one-to-N power splitter / combiner or connected to 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, the second end g2 of the first isolator is connected to the input end or output end of the phase shifting module or the one-to-N power splitter / combiner, and the first end g1 of the second isolator is connected to the input end or output end of the phase shifting module or the one-to-N power splitter / combiner.

[0069] Based on the above embodiments, in one embodiment of the present specification, the duplex module includes: a single duplexer and two isolators, and the two isolators are respectively connected to different ends of the duplexer.

[0070] Specifically, Fig.13 As shown, Fig.13A structural schematic diagram of the sixth duplex module provided in an embodiment of the present invention, the duplex module can be a combination of a duplexer and two isolators, that is, the duplex module includes a duplexer, a first isolator and a 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 connected to M first ports, 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, the second end g2 of the first isolator is connected to the input end or output end of the phase shifting module and the one-to-N power splitter / combiner, and the first end g1 of the second isolator is connected to the input end or output end of the phase shifting module and the one-to-N power splitter / combiner.

[0071] The duplex radio frequency matrix provided in the embodiments of this specification can ensure that the wireless environment in which the uplink channel and the downlink channel propagate is less affected by frequency selective fading, thereby ensuring the accuracy of the test results.

[0072] Based on the above embodiments, in one embodiment of the present specification, the first phase shift module and the second phase shift module are one of the following: a phase shift component, a phase shift component and an attenuation component, and a phase shift attenuation component.

[0073] Specifically, the first phase shifting module and the second phase shifting module can be phase shifting components capable of adjusting the original beam angle, or they can be phase shifting components and attenuation components, or phase shift attenuation components capable of adjusting the original beam angle and gain. It can be understood that the phase shift attenuation component is a component in which the phase shift component and the attenuation component are integrated in one component.

[0074] In the embodiment of the present specification, the first phase shift module and the second phase shift 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.

[0075] Based on the above embodiments, in one embodiment of this specification, Figure 2 and Figure 6 As shown, when the first phase shift module and the second phase shift module are the phase shift components, it also includes: N first attenuation components, one end of each of the first attenuation components is connected to the first one-to-M 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;

[0076] Or, it also includes: 2×N second attenuation components, one end of the second attenuation component is connected to the second one-to-M power splitter / combiner in a one-to-one correspondence, and the other end of the second attenuation component is used to connect to the target terminal.

[0077] It can be understood that the number of the second attenuation components can be N or 2×N, and the specific setting position can be set according to actual needs. It can be set at any position of 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-to-M power splitter / combiner and the target terminal; it can also be set at any position of the base station, the third duplex module, the second one-to-N power splitter / combiner, the second phase shift module, the second one-to-M power splitter / combiner, the fourth duplex module and the target terminal.

[0078] In the embodiment of the present specification, the first phase shift module and the second phase shift 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.

[0079] Example 2

[0080] A test system includes a control device, the M×N radio frequency matrix in embodiment 1, a power supply system and a chassis frame.

[0081] The control device is connected to the M×N RF matrix, and is used to obtain a target beam angle, obtain 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 adjust the phase shift and attenuation module or the phase value of the phase shift module of the corresponding channel according to the phase setting value of each channel.

[0082] The M×N RF matrix includes an M×N RF matrix, and the M×N RF 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 M original signals, and the M×N RF matrix receives the M original signals sent by the base station and converts the M original signals into N received signals, and sends them to the terminal via the N second ports.

[0083] The M×N RF matrix also includes a duplex module, a phase shift module, and a splitter. The splitter includes a one-to-N power splitter / combiner and a one-to-M power splitter / combiner. In this embodiment, the one-to-N power splitter / combiner is a one-to-N RF one-to-N power splitter / combiner, and the one-to-M power splitter / combiner is a 1 / M RF one-to-M power splitter / combiner.

[0084] A 1-to-N RF 1-to-N power splitter / combiner is provided at each first port, and the main port of the 1-to-N RF 1-to-N power splitter / combiner receives one original signal and divides the original signal into N signals. M 1-to-N RF 1-to-N power splitters / combiners are provided at the M first ports, and each 1-to-N RF 1-to-N power splitter / combiner divides the original signal of each first port into N signals; a 1 / M RF 1-to-M power splitter / combiner is provided at each second port, and the main port of the 1 / M RF 1-to-M power splitter / combiner combines the M original signals into one received signal.

[0085] The duplex module divides the M×N RF matrix into M×N uplink channels and M×N downlink channels. The M×N RF matrix looks like an M×N RF 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 and the other is an M×N downlink channel.

[0086] 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; 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.

[0087] 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 one-to-N power splitter / combiner and the one-to-M power splitter / combiner, that is, a duplex module is provided between each one-to-N power splitter / combiner and the phase shift module, and a duplex module is provided between each one-to-M power splitter / combiner and the phase shift module. Specifically, see Figure 1 As shown, each branch port of the 1-to-N RF 1-to-N power splitter / combiner is connected to the main port of a duplexer, and each branch port of the duplexer is connected to a phase shift module. Each branch port of the 1 / M RF 1-to-M power splitter / combiner is connected to a duplexer, and each branch port of the duplexer is connected to the above-mentioned phase shift module.

[0088] Since each uplink channel and each downlink channel are provided with a phase shift module, the M×N RF matrix in the present invention includes M×N×2 phase shift modules. Preferably, in the M×N RF matrix, M is one of 2, 4, 8, 16, 32, 64, 128, 256, and N is one of 2, 4, 8, 16, 32, 64, 128, 256.

[0089] The control device is connected to the M×N RF matrix. The control device is used to obtain the target beam angle, obtain the 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 the preset model, and adjust the phase value of the phase shift module of the corresponding channel according to the phase setting value of each channel.

[0090] Preferably, the preset model is:

[0091] PS=(j-1)×2π×Di / λ×SIN(θ)+(i-1)×2π×Dj / λ×SIN(φ)

[0092] Among them, the vibration source of the base station antenna connected to the M first ports is an i×j array, Di is the distance between adjacent vibration sources in the horizontal direction, Dj is the distance between adjacent vibration sources in the vertical direction, θ is the horizontal angle of the beam, φ is the vertical angle of the beam, and λ is the wavelength.

[0093] See also Fig.15 , schematic diagram of the base station antenna source arrangement, the source of the base station antenna connected to the M first ports is an i×j array, where i×j is equal to M.

[0094] In addition, the power supply system is used to supply power to the control device and the M×N RF matrix. The above control device, M×N RF matrix and power supply system are all installed in the chassis frame, and together constitute a frequency division duplex performance test system.

[0095] When this system is in use, the test method includes the following contents.

[0096] The M first ports are connected to the T / R ports of the base station device to receive M downlink (DL) original signals sent by the base station device, or to transmit the uplink (UL) received signal to the base station device; the N second ports are connected to each T / R port or R port of the terminal device to transmit the downlink (DL) received signal to the terminal, or to transmit the uplink (UL) original signal to the terminal device.

[0097] See also Fig.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 receiving signals through M×N downlink channels and sent to the terminal; 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.

[0098] Among them, the user inputs the target beam angle in the control device, and obtains the 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 the preset model; and adjusts the phase value of the phase shift module of the corresponding channel according to the phase setting value of each channel.

[0099] During the test, different target beam angles are input, and the phase value of the corresponding channel is adjusted to obtain the test data reported by the terminal. The test data includes parameters such as throughput, signal-to-noise ratio, bit error rate, MCS value, and parameter changes. The test data is compared with the expected data to analyze the base station or terminal performance.

[0100] The test system provided by the present invention can simulate the transmission characteristics of the FDD standard in 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 reversely calculate the phase value of each channel through the user input beam angle, and obtain the relevant test data reported by the terminal while adjusting the angle, and analyze whether the test data meets expectations, and the user operation is simple. In the test system provided by the present invention, the uplink channel and the downlink channel are separated by a duplex module, and it is still an overall M×N RF matrix to the outside, but it is actually composed of two M×N channels and a duplex module. The uplink channel and the downlink channel will not interfere with each other, and the test accuracy is high.

[0101] Example 3

[0102] See also Figure 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 RF matrix includes M×N×2 phase shift modules and N attenuation modules.

[0103] 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.

[0104] When the system is in use, the attenuation value of the corresponding attenuation module can also be manually adjusted according to the target gain until the target gain is reached.

[0105] Example 4

[0106] refer to Figure 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. At this time, the M×N RF matrix includes M×N×2 phase shift and attenuation modules. The phase shift and attenuation module integrates phase shift and attenuation functions. At this time, there is no need to set an attenuation module.

[0107] In the fourth embodiment, the control device is further used to obtain a target gain, and adjust the attenuation value of the corresponding channel in real time according to the target gain.

[0108] The usage process of the third embodiment and the fourth embodiment is similar to that of the second embodiment.

[0109] The M first ports are connected to the T / R ports of the base station device to receive M downlink (DL) original signals sent by the base station device, or to transmit the uplink (UL) received signal to the base station device; the N second ports are connected to each T / R port or R port of the terminal device to transmit the downlink (DL) received signal to the terminal, or to transmit the uplink (UL) original signal to the terminal device.

[0110] See also Fig.14The transmission direction of the information flow is that the M downlink original signals sent by the base station equipment are converted into N downlink receiving signals through M×N downlink channels and sent to the terminal; 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.

[0111] Among them, the user inputs the target beam angle in the control device, and obtains the 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 the preset model; and adjusts the phase value of the phase shift module of the corresponding channel according to the phase setting value of each channel.

[0112] During the test, different target beam angles are input, and the phase value of the corresponding channel is adjusted to obtain the test data reported by the terminal. The test data includes parameters such as throughput, signal-to-noise ratio, bit error rate, MCS value, and parameter changes. The test data is compared with the expected data to analyze the base station or terminal performance.

[0113] The attenuation value of the corresponding channel can also be manually adjusted according to the target gain until the target gain is reached. The test data reported by the terminal is obtained, and the test data is compared with the expected data to analyze the performance of the base station or terminal.

[0114] The test system provided in Example 3 and Example 4 can simulate the transmission characteristics of the FDD standard in 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 reversely calculate the phase value of each channel through the user input beam angle, and adjust the attenuation value of the channel according to the real-time gain to achieve the target gain setting. While adjusting the angle and gain, the relevant test data reported by the terminal is obtained, and the test data is analyzed to see whether it meets expectations, and the user operation is simple. In the test system provided by the present invention, the uplink channel and the downlink channel are separated by a duplex module. It is still an overall M×N RF matrix to the outside, but it is actually composed of two M×N channels and a duplex module. The uplink channel and the downlink channel will not interfere with each other, and the test accuracy is high.

[0115] Example 5

[0116] See also Figure 4 and Figure 5 This embodiment provides a test system. Based on the fourth embodiment, the position of the duplex module is changed, and the duplex module is set before the one-to-N power splitter / combiner and after the one-to-M power splitter / combiner. Specifically, the duplex module is set between the splitter and the base station and between the splitter and the terminal.

[0117] Specifically, a test system includes a control device, an M×N radio frequency matrix, a power supply system and a chassis frame.

[0118] The M×N RF matrix includes an M×N RF matrix, and the M×N RF 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 RF matrix is ​​used to receive M original signals sent by the base station and convert the M original signals into N received signals, and send them to the terminal through the N second ports.

[0119] The M×N radio frequency matrix also includes a duplex module, a phase shift module and a splitter. The splitter includes a one-to-N power splitter / combiner and a one-to-M power splitter / combiner.

[0120] The duplex module divides the M×N RF matrix into M×N uplink channels and M×N downlink channels. The M×N RF matrix is ​​composed of two M×N channels and a duplex module, that is, it contains a total of M×N×2 channels, one of which is an M×N uplink channel and the other is an M×N downlink channel.

[0121] Each first port is connected to a splitter via a duplex module, wherein each duplex module is connected to both an N-power splitter / combiner and an M-power splitter / combiner. Each second port is connected to a splitter via a duplex module, wherein each duplex module is connected to both an N-power splitter / combiner and an M-power splitter / combiner.

[0122] 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; 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.

[0123] In Embodiment 5, each uplink channel and each downlink channel is provided with a phase shift and attenuation module. In addition, the phase shift and attenuation module can be replaced by a phase shift module.

[0124] 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 arranged before the splitter and after the splitter, and the splitter includes a one-way N power splitter / combiner and a one-way M power splitter / combiner. At this time, the order of the downlink signal flow in each first port is: base station, duplex module, one-way N power splitter / combiner, phase shift and attenuation module, one-way M power splitter / combiner, duplex module, terminal. The order of the uplink signal flow in each first port is: terminal, duplex module, one-way N power splitter / combiner, phase shift and attenuation module, one-way M power splitter / combiner, duplex module, base station.

[0125] The M×N radio frequency matrix of the present invention 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.

[0126] The control device is connected to the M×N RF matrix. The control device is used to obtain the target beam angle, obtain the 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 the preset model, and adjust the phase value of the phase shift module of the corresponding channel according to the phase setting value of each channel.

[0127] Preferably, the preset model is:

[0128] PS=(j-1)×2π×Di / λ×SIN(θ)+(i-1)×2π×Dj / λ×SIN(φ)

[0129] Among them, the vibration source of the base station antenna connected to the M first ports is an i×j array, Di is the distance between adjacent vibration sources in the horizontal direction, Dj is the distance between adjacent vibration sources in the vertical direction, θ is the horizontal angle of the beam, φ is the vertical angle of the beam, and λ is the wavelength.

[0130] See also Fig.15 , schematic diagram of the base station antenna source arrangement, the source of the base station antenna connected to the M first ports is an i×j array, where i×j is equal to M.

[0131] 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 and together constitute a test system.

[0132] When this system is in use, the test method includes the following contents.

[0133] The M first ports are connected to the T / R ports of the base station device to receive M downlink (DL) original signals sent by the base station device, or to transmit the uplink (UL) received signal to the base station device; the N second ports are connected to each T / R port or R port of the terminal device to transmit the downlink (DL) received signal to the terminal, or to transmit the uplink (UL) original signal to the terminal device.

[0134] See also Fig.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 receiving signals through M×N downlink channels and sent to the terminal; 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.

[0135] Among them, the user inputs the target beam angle in the control device, and obtains the 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 the preset model; and adjusts the phase value of the phase shift and attenuation module of the corresponding channel according to the phase setting value of each channel.

[0136] During the test, input different target beam angles, adjust the phase value of the corresponding channel, and 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, including parameters such as throughput, signal-to-noise ratio, bit error rate, MCS value, and parameter changes, and compare the test data with the expected data.

[0137] The test system provided by the present invention can simulate the transmission characteristics of the FDD standard in 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 reversely calculate the phase value of each channel through the user input beam angle, and obtain the relevant test data reported by the terminal while adjusting the angle and gain, and analyze whether the test data meets expectations, and the user operation is simple. In the test system provided by the present invention, the uplink channel and the downlink channel are separated by a duplex module, and it is still an overall M×N RF matrix to the outside, but it is actually composed of two M×N channels and a duplex module. The uplink channel and the downlink channel will not interfere with each other, and the test accuracy is high.

[0138] An embodiment of the present invention further provides a computer-readable medium having a non-volatile program code executable by a processor, wherein the program code enables the processor to execute the method provided by the above method embodiment.

[0139] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. The test method provided in the embodiment of the present invention has the same implementation principle and technical effects as the aforementioned system embodiment. For the sake of brief description, for the parts not mentioned in the method embodiment, reference can be made to the corresponding contents in the aforementioned system embodiment.

[0140] In several embodiments provided in the present application, it should be understood that the disclosed system and method can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0141] 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, 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. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program code.

[0142] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; 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 included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the above-mentioned claims.

Claims

1. A radio frequency matrix, characterized in that: It includes M first ports and N second ports, each first port is connected to a main port of a 1-to-N power splitter / combiner, each second port is connected to a main port of a 1-to-M power splitter / combiner, and a phase shift module is connected between a branch port of each 1-to-N power splitter / combiner and a branch port of each 1-to-M power splitter / combiner to form a radio frequency channel; The radio frequency matrix also includes a duplex module, and the duplex module is further connected between a branch port of each one-to-N power splitter / combiner and a branch port of each one-to-M power splitter / combiner; or, the duplex module is connected between each first port and a main port of a one-to-N power splitter / combiner, and the duplex module is connected between each second port and a main port of a one-to-M power splitter / combiner; The duplex module divides the RF channels in the RF matrix into M×N uplink channels and M×N downlink channels, each uplink channel and each downlink channel is connected to a phase shift module; the phase shift module is any one of the following: a phase shift component, a phase shift attenuation component, or a combination of a phase shift component and an attenuation component; When a duplex module is connected between a branch port of the one-to-N power splitter / combiner and a branch port of the one-to-M power splitter / combiner, the number of the duplex modules is M×N×2, the number of the one-to-N power splitter / combiner is M, the number of the one-to-M power splitter / combiner is N, two duplex modules are connected between a branch port of each one-to-N power splitter / combiner and a branch port of each one-to-M power splitter / combiner, wherein a main port of one duplex module is connected to a branch port of the one-to-N power splitter / combiner, a main port of another duplex module is connected to a branch port of the one-to-M power splitter / combiner, and two phase shift modules are connected between the branch ports of the two duplex modules; When the duplex module is connected between the main port and the first port of the one-to-N power splitter / combiner and between the main port and the second port of the one-to-M power splitter / combiner, the number of the duplex modules is M+N, the number of the one-to-N power splitters / combiners is 2×M, the number of the one-to-M power splitters / combiners is 2×N, each first port is connected to the main port of a duplex module and the branch port of the duplex module is connected to the main ports of two one-to-N power splitters / combiners, and each second port is connected to the main port of a duplex module and the branch port of the duplex module is connected to the main ports of two one-to-M power splitters / combiners.

2. The radio frequency matrix according to claim 1, characterized in that: The duplex module is one of the following: a duplexer and a circulator.

3. The radio frequency matrix according to claim 1, characterized in that: 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.

4. The radio frequency matrix according to claim 3, characterized in that: The duplex module comprises: a single duplexer and two circulators, one end of the two circulators being respectively connected to the input end and the output end of the duplexer.

5. The radio frequency matrix according to claim 3, characterized in that: The duplex module includes: a single circulator and two isolators, and the two isolators are respectively connected to different ends of the circulator.

6. The radio frequency matrix according to claim 3, characterized in that: The duplex module includes: a single duplexer and two isolators, and the two isolators are respectively connected to different ends of the duplexer.

7. A testing system, characterized in that: comprising a control device and a radio frequency matrix as claimed in any one of claims 1 to 6; The control device is connected to the RF matrix, and is used to obtain a target beam angle, obtain 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 adjust the phase value of the corresponding channel according to the phase setting value of each channel.

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