A base station air interface test system

Abstract

The present invention relates to a base station air interface test system, comprising a device to be tested, a detection device, at least one group of phase-amplitude adjustment devices and at least one signal transceiver, each group of phase-amplitude adjustment devices comprises a plurality of phase-amplitude adjustment modules, at least one group of phase-amplitude adjustment devices corresponds one-to-one to at least one signal transceiver; the detection device comprises a plurality of antenna ports, a plurality of phase-amplitude adjustment modules in each group of phase-amplitude adjustment devices correspond one-to-one to a plurality of antenna ports, one end of each phase-amplitude adjustment module is connected to any antenna port of the detection device, and the other end of each phase-amplitude adjustment module is connected to a signal transceiver corresponding to each group of phase-amplitude adjustment devices. The present invention connects a phase-amplitude adjustment module at each antenna port of the detection device to adjust the phase and amplitude of each channel, thereby compensating for the fluctuation amount of the plane wave at the quiet zone generation location, forming a higher quality quiet zone, and thus improving the test accuracy of the test system.

Description

Technical Field

[0001] The present invention relates to the technical field of base station air interface testing, and in particular to a base station air interface testing system. Background Art

[0002] As the pace of global 5G construction accelerates, base station manufacturers are faced with the situation of mass delivery. Whether it is large-scale production of a single variety or small-batch production of multiple varieties, the production line's demand for product testing systems not only requires a certain level of test accuracy, but also requires a significant improvement in test efficiency.

[0003] When detecting wireless communication performance such as the signal pattern of the device under test, it is necessary to form a quiet zone covered by a plane wave at the device under test. The existing technology can generally form a plane wave and thus a quiet zone by beam synthesis between array antennas. However, the plane wave generated at the device under test in this way will fluctuate due to different frequencies, resulting in limited test accuracy of the test system. Summary of the invention

[0004] In order to solve the above technical problems, the present invention discloses a base station air interface test system, in which a phase-amplitude adjustment module is connected at each antenna port of a detection device to adjust the phase and amplitude of each channel, thereby compensating for the fluctuation amount of the plane wave at the location where the quiet zone is generated, forming a higher quality quiet zone, and thus improving the test accuracy of the test system; in addition, when the phase-amplitude adjustment modules in multiple groups of phase-amplitude adjustment devices are connected at each antenna port of the detection device, the detection device can also generate multiple quiet zones with angle differences at the device to be tested, thereby realizing a single multi-angle test of the device to be tested and improving the test efficiency.

[0005] In order to achieve the above-mentioned object, the present invention provides a base station air interface test system, comprising a device to be tested, a detection device, at least one group of phase and amplitude adjustment devices and at least one signal transceiver device, each group of phase and amplitude adjustment devices comprises a plurality of phase and amplitude adjustment modules, and the at least one group of phase and amplitude adjustment devices corresponds to the at least one signal transceiver device one by one;

[0006] The device under test is arranged on one side of the detection device, and the at least one set of phase and amplitude adjustment devices and the at least one signal transceiver device are arranged on the other side of the detection device;

[0007] The detection device includes multiple antenna ports, and the multiple phase-amplitude adjustment modules in each group of phase-amplitude adjustment devices correspond to the multiple antenna ports one-to-one. One end of each phase-amplitude adjustment module is connected to any antenna port of the detection device, and the other end of each phase-amplitude adjustment module is connected to the signal transceiver device corresponding to each group of phase-amplitude adjustment devices respectively. The adjustment parameters corresponding to each phase-amplitude adjustment module match the port parameters corresponding to the antenna port to which each phase-amplitude adjustment module is respectively connected.

[0008] In an optional embodiment, when the base station air interface test system includes a group of phase and amplitude adjustment devices and a signal transceiver device, the multiple phase and amplitude adjustment modules in the group of phase and amplitude adjustment devices correspond one-to-one to the multiple antenna ports; by adjusting the multiple phase and amplitude adjustment modules in the group of phase and amplitude adjustment devices, the detection device generates a quiet zone corresponding to the group of phase and amplitude adjustment devices at the device under test.

[0009] In an optional embodiment, when the base station air interface test system includes multiple groups of phase and amplitude adjustment devices and multiple signal transceiver devices, the multiple groups of phase and amplitude adjustment devices correspond one-to-one to the multiple signal transceiver devices, and each antenna port of the detection device is respectively connected to any phase and amplitude adjustment module of each group of phase and amplitude adjustment devices; by adjusting the multiple phase and amplitude adjustment modules in each group of phase and amplitude adjustment devices, the detection device generates multiple quiet zones with angle differences at the device under test, the number of the multiple quiet zones with angle differences is the same as the number of the multiple groups of phase and amplitude adjustment devices, and each quiet zone is formed based on the joint action of the multiple groups of phase and amplitude adjustment devices.

[0010] In an optional embodiment, each phase-amplitude adjustment module includes a signal attenuator and a phase shifter, and the adjustment parameters corresponding to the signal attenuator and the adjustment parameters corresponding to the phase shifter both match the port parameters.

[0011] In an optional embodiment, there are multiple transceiver links between each signal transceiver device and the detection device, and each transceiver link is formed based on each signal transceiver device, the phase shifter, the signal attenuator and any antenna port of the detection device; the number of transceiver links between each signal transceiver device and the detection device is the same as the number of phase and amplitude adjustment modules included in each group of phase and amplitude adjustment devices.

[0012] In an optional embodiment, the detection device includes an antenna element and a reflector, the antenna element is a linear array antenna, and the reflector is a curved plate.

[0013] In an optional embodiment, the cross-section of the reflector in the vertical direction is arc-shaped, the array direction of the antenna elements extends along the horizontal direction of the reflector, and the antenna elements are located at the focal line of the reflector.

[0014] In an optional embodiment, two ends of the reflector in the extending direction of the arc are bent in a direction away from the antenna element to form scattering arcs.

[0015] In an optional embodiment, the base station air interface test system further includes a chamber for providing a test environment, and a placement platform for placing the device to be tested is provided in the chamber.

[0016] In an optional embodiment, the detection device further includes a displacement module to enable the detection device to move within the chamber.

[0017] Implementing the embodiments of the present invention has the following beneficial effects:

[0018] The base station air interface test system disclosed in the present invention connects a phase-amplitude adjustment module at each antenna port of a detection device to adjust the phase and amplitude of each channel, thereby compensating for the fluctuation amount of the plane wave at the location where the quiet zone is generated, forming a higher quality quiet zone, and further improving the test accuracy of the test system; in addition, when the phase-amplitude adjustment modules in multiple groups of phase-amplitude adjustment devices are connected at each antenna port of the detection device, the detection device can also generate multiple quiet zones with angle differences at the device to be tested, thereby realizing a single multi-angle test of the device to be tested and improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the base station air interface test system described in the present invention, the drawings required for the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic structural diagram of a chamber for providing a test environment provided by an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the structure of a base station air interface test system provided by an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the structure of a reflector provided by an embodiment of the present invention;

[0023] Figure 4 A schematic structural diagram of a base station air interface test system including a group of phase and amplitude adjustment devices provided in an embodiment of the present invention;

[0024] Figure 5 A schematic structural diagram of a base station air interface test system including multiple groups of phase and amplitude adjustment devices provided in an embodiment of the present invention;

[0025] In the figure, 1-device under test, 2-detection device, 21-antenna element, 22-reflector, 23-shift module, 24-scattering arc, 3-placing platform, 4-chamber, 5-phase-amplitude adjustment device, 51-phase-amplitude adjustment module, 511-signal attenuator, 512-phase shifter, 6-signal transceiver. DETAILED DESCRIPTION

[0026] 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.

[0027] 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 interchangeable 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, system, product, or server 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 devices.

[0028] Combination Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, a base station air interface test system provided in an embodiment of the present specification includes a device under test 1, a detection device 2, at least one group of phase and amplitude adjustment devices 5 and at least one signal transceiver device 6, each group of phase and amplitude adjustment devices 5 includes multiple phase and amplitude adjustment modules 51, and the at least one group of phase and amplitude adjustment devices 5 corresponds to the at least one signal transceiver device 6 one by one; the device under test 1 is arranged on one side of the detection device 2, and the at least one group of phase and amplitude adjustment devices 5 and the at least one signal transceiver device 6 are arranged on the other side of the detection device 2; the detection device 2 includes multiple antenna ports, and the multiple phase and amplitude adjustment modules 51 in each group of phase and amplitude adjustment devices 5 correspond to the multiple antenna ports one by one, one end of each phase and amplitude adjustment module 51 is connected to any antenna port of the detection device 2, and the other end of each phase and amplitude adjustment module 51 is connected to the signal transceiver device 6 corresponding to each group of phase and amplitude adjustment devices 5, and the adjustment parameters corresponding to each phase and amplitude adjustment module 51 match the port parameters corresponding to the antenna port to which each phase and amplitude adjustment module 51 is connected.

[0029] In the embodiments of this specification, Over The Air (OTA) testing is a performance testing method for wireless communication equipment, which is mainly used to evaluate the performance of the equipment in a wireless transmission environment.

[0030] In the embodiments of this specification, the device under test 1 may be a wireless communication device such as a base station.

[0031] In the embodiments of this specification, Figure 1 As shown, the base station air interface test system also includes a chamber 4 for providing a test environment, and a placement platform 3 for placing the device to be tested 1 is arranged in the chamber 4. The device to be tested 1 and the detection device 2 are arranged in the chamber 4. By setting up the chamber, interference of external factors on the test can be avoided, thereby improving the accuracy of the test.

[0032] In the embodiments of this specification, Figure 2 As shown, the detection device 2 includes an antenna element 21 and a reflector 22, the antenna element 21 is a linear array antenna, the reflector 22 is a curved plate, the cross-section of the reflector 22 in the vertical direction is an arc shape, the array direction of the antenna element 21 extends along the horizontal direction of the reflector 22, and the antenna element 21 is located at the focal line of the reflector 22.

[0033] When detecting the signal pattern and other performance of wireless communication equipment, the antenna element needs to form a quiet zone covered by plane waves at the wireless communication equipment to be tested, so that the wireless communication equipment in the quiet zone can be detected. The antenna pattern of a single signal source extends outward with the signal source as the center of the sphere. Such an electromagnetic field cannot be used to detect wireless communication equipment. The existing method is to set a reflective surface on the side of the signal source away from the wireless communication equipment to be tested. The reflective surface is set as a concave spherical surface, which can reflect the signal extended from the spherical surface in a parallel state. However, this method has extremely high requirements for the processing of the reflective surface. The processing requirements here are not only the bending requirements of the reflective surface, but also the smoothness requirements of the reflective surface. In short, the processing and acceptance of the reflective surface requires a lot of time and energy, which brings great inconvenience and difficulty to the research and development and manufacturing of the entire air interface test system.

[0034] In order to avoid this method, the existing alternative method is to set the antenna elements used for detection into a planar array state, and form a plane wave through beam synthesis between the array antennas to form a quiet zone. However, this method requires the use of a large number of antennas to form a quiet zone of sufficient range to cover the wireless communication device under test. On the one hand, the use of a large number of antennas will increase the test energy consumption; on the other hand, the antenna elements used for detection themselves will also have a slight impact on the test accuracy. Once the number of detection antennas increases, the test accuracy will decrease.

[0035] Considering the above reasons, the detection device 2 in the embodiment of this specification is composed of a linear array antenna and a single-dimensional reflective surface. Through the cooperation of the linear array antenna and the single-dimensional reflective surface, the detection device 2 can also generate a quiet zone at the device under test 1. Since the propagation of the signal in space can be decomposed into two mutually perpendicular dimensions, by setting the reflector 22 to be a curved surface in the vertical direction, the reflector 22 can perform beam correction in the vertical direction, and then combine with the linear array antenna set in the horizontal direction to synthesize the beam in the horizontal direction. By using different means to adjust the signal in two dimensions, a quiet zone is generated at the device under test 1. Under this setting, on the one hand, the processing of the reflective surface changes from the curved surface requirement in space to the curved surface requirement in one dimension in the vertical direction, and the smoothness requirement of the reflective surface is also reduced, and the processing difficulty is greatly reduced, which improves the research and development and manufacturing efficiency of the entire air interface test system; on the other hand, since the detection device 2 uses a linear array antenna, the number of detection antennas does not increase significantly, which will not lead to a large increase in energy consumption or a decrease in test accuracy during the test. Therefore, the embodiment of the present specification sets the detection device 2 to include an antenna element 21 and a reflector 22, wherein the antenna element 21 is a linear array antenna, the reflector 22 is a curved plate, the cross-section of the reflector 22 in the vertical direction is an arc-shaped, the array direction of the antenna element 21 extends along the horizontal direction of the reflector 22, and the antenna element 21 is located at the focal line of the reflector 22. This can not only achieve the generation of a quiet zone at the device under test 1, but also avoid consuming a lot of time and effort to manufacture the reflecting surface, and will not significantly increase the number of detection antennas, will not increase the energy consumption during the test, avoid signal interference caused by a large number of detection antennas, and improve the test accuracy of the entire air interface test system.

[0036] In the embodiments of this specification, Figure 3 As shown, both ends of the reflector 22 in the arc extension direction are bent away from the antenna element 21 to form scattering arcs 24.

[0037] In the embodiment of the present specification, the reflector 22 is bent only in the vertical direction, and electromagnetic waves will be reflected back from both ends of the bending direction of the reflector 22, interfering with the detection accuracy of the antenna element 21. Therefore, the two ends of the bending direction of the reflector 22 can be set to bend outward (that is, bend in the direction away from the antenna element 21) to form a scattering arc 24, and the signals that may be reflected from both ends of the reflector 22 are scattered through the scattering arc 24, thereby improving the detection accuracy of the antenna element 21.

[0038] In the embodiments of this specification, Figure 2As shown, the detection device 2 further includes a displacement module 23, so that the detection device 2 can move in the chamber 4. For example, the displacement module 23 can be a wheel. By setting the displacement module, the position of the detection device in the chamber can be adjusted to facilitate testing of different devices to be tested or testing of different performances of the devices to be tested.

[0039] In the embodiments of this specification, Figure 4 As shown, in the case where the base station air interface test system includes a group of phase and amplitude adjustment devices 5 and a signal transceiver device 6, the multiple phase and amplitude adjustment modules 51 in the group of phase and amplitude adjustment devices 5 correspond one-to-one to the multiple antenna ports; by adjusting the multiple phase and amplitude adjustment modules 51 in the group of phase and amplitude adjustment devices 5, the detection device 2 generates a quiet zone corresponding to the group of phase and amplitude adjustment devices 5 at the device under test 1.

[0040] In the embodiment of this specification, it is considered that the plane wave formed by the linear array antenna in the detection device 2 directly at the device under test 1 through beam synthesis will fluctuate due to different frequencies, affecting the test accuracy of the system. Therefore, in the embodiment of this specification, a phase-amplitude adjustment module 51 is connected to each port of the antenna element 21 in the detection device 2, and the phase and amplitude of each channel are adjusted by adjusting the phase-amplitude adjustment module 51, thereby compensating for the fluctuation of the plane wave at the quiet zone, forming a higher quality quiet zone, and thus improving the test accuracy of the entire test system.

[0041] In the embodiment of the present specification, each phase-amplitude adjustment module 51 includes a signal attenuator 511 and a phase shifter 512, and the adjustment parameters corresponding to the signal attenuator 511 and the adjustment parameters corresponding to the phase shifter 512 are matched with the port parameters; by adjusting the signal attenuator 511 and the phase shifter 512 in each phase-amplitude adjustment module 51, the phase and amplitude of the signal emitted by each antenna in the antenna element 21 can be adjusted, thereby adjusting the beam synthesized by the antenna element 21, and then achieving compensation for the plane wave fluctuations generated in the quiet zone.

[0042] In the embodiment of the present specification, there are multiple transceiver links between each signal transceiver device 6 and the detection device 2, and each transceiver link is formed based on each signal transceiver device 6, the phase shifter 512, the signal attenuator 511 and any antenna port of the detection device 2; the number of transceiver links between each signal transceiver device 6 and the detection device 2 is the same as the number of phase and amplitude adjustment modules 51 included in each group of phase and amplitude adjustment devices 5. By adjusting the signal attenuator 511 and the phase shifter 512 in each phase and amplitude adjustment module 51, the phase and amplitude of the signal input to the corresponding antenna port can be adjusted, thereby adjusting the beam synthesized by the antenna element 21, and then realizing compensation for the plane wave fluctuation at the quiet zone.

[0043] In the embodiments of this specification, Figure 4 As shown, the base station air interface test system includes a group of phase and amplitude adjustment devices 5 and a signal transceiver device 6, the antenna element 21 in the detection device 2 includes n antenna ports, the group of phase and amplitude adjustment devices 5 includes n phase and amplitude adjustment modules 51, the n antenna ports are respectively connected to the n phase and amplitude adjustment modules 51, each phase and amplitude adjustment module 51 is used to adjust the phase and amplitude of the signal input to the corresponding antenna port; each phase and amplitude adjustment module 51 includes a signal attenuator 511 and a phase shifter 512, there are n transceiver links between the signal transceiver device 6 and the detection device 2, each transceiver link is formed based on the signal transceiver device 6, the phase shifter 512, the signal attenuator 511 and the antenna port, that is, the number of phase and amplitude adjustment modules 51 in the group of phase and amplitude adjustment devices 5 is the same as the number of antenna ports of the detection device 2, and is also the same as the number of transceiver links between the signal transceiver device 6 and the detection device 2. By adjusting the phase and amplitude adjustment module 51 respectively connected to each antenna port, the phase and amplitude of the signal emitted by each antenna in the antenna element 21 can be adjusted, thereby adjusting the beam synthesized by the antenna element 21, thereby compensating for the fluctuation amount of the plane wave where the quiet zone is generated, forming a higher quality quiet zone, and thus improving the test accuracy of the test system.

[0044] Combination Figure 1 , Figure 2 , Figure 3 as well as Figure 5As shown, another embodiment of the present specification provides a base station air interface test system including a device under test 1, a detection device 2, at least one group of phase and amplitude adjustment devices 5 and at least one signal transceiver device 6, each group of phase and amplitude adjustment devices 5 includes multiple phase and amplitude adjustment modules 51, and the at least one group of phase and amplitude adjustment devices 5 corresponds to the at least one signal transceiver device 6 one by one; the device under test 1 is arranged on one side of the detection device 2, and the at least one group of phase and amplitude adjustment devices 5 and the at least one signal transceiver device 6 are arranged on the other side of the detection device 2; the detection device 2 includes multiple antenna ports, and the multiple phase and amplitude adjustment modules 51 in each group of phase and amplitude adjustment devices 5 correspond to the multiple antenna ports one by one, one end of each phase and amplitude adjustment module 51 is connected to any antenna port of the detection device 2, and the other end of each phase and amplitude adjustment module 51 is connected to the signal transceiver device 6 corresponding to each group of phase and amplitude adjustment devices 5, and the adjustment parameters corresponding to each phase and amplitude adjustment module 51 match the port parameters corresponding to the antenna port to which each phase and amplitude adjustment module 51 is respectively connected.

[0045] In another embodiment of the present specification, the device under test 1 may be a wireless communication device such as a base station.

[0046] In the embodiments of this specification, Figure 1 As shown, the base station air interface test system also includes a chamber 4 for providing a test environment, and a placement platform 3 for placing the device to be tested 1 is arranged in the chamber 4. The device to be tested 1 and the detection device 2 are arranged in the chamber 4. By setting up the chamber, interference of external factors on the test can be avoided, thereby improving the accuracy of the test.

[0047] In another embodiment of this specification, Figure 2 As shown, the detection device 2 includes an antenna element 21 and a reflector 22, the antenna element 21 is a linear array antenna, the reflector 22 is a curved plate, the cross-section of the reflector 22 in the vertical direction is an arc shape, the array direction of the antenna element 21 extends along the horizontal direction of the reflector 22, and the antenna element 21 is located at the focal line of the reflector 22.

[0048] In another embodiment of the present specification, by setting the reflector 22 to be a curved surface in the vertical direction, the reflector 22 can perform beam correction in the vertical direction, and then combine with the linear array antenna set in the horizontal direction to synthesize the beam in the horizontal direction. Through the cooperation of two dimensions, a quiet zone can be generated at the device under test 1. In addition, by setting the detection device 2 to include an antenna element 21 and a reflector 22, the antenna element 21 is a linear array antenna, the reflector 22 is a curved plate, the cross-section of the reflector 22 in the vertical direction is an arc shape, the array direction of the antenna element 21 extends along the horizontal direction of the reflector 22, and the antenna element 21 is located at the focal line of the reflector 22. It can achieve the generation of a quiet zone at the device under test 1 without consuming a lot of time and energy to manufacture a reflecting surface, and will not greatly increase the number of detection antennas, will not increase the energy consumption during the test, avoid signal interference caused by a large number of detection antennas, and improve the test accuracy of the test system.

[0049] In another embodiment of this specification, Figure 3 As shown, both ends of the reflector 22 in the arc extension direction are bent away from the antenna element 21 to form scattering arcs 24.

[0050] In another embodiment of the present specification, the reflector 22 is bent only in the vertical direction, and electromagnetic waves will be reflected back from both ends of the bending direction of the reflector 22, interfering with the detection accuracy of the antenna element 21. Therefore, the two ends of the bending direction of the reflector 22 can be bent outward (i.e., bent in a direction away from the antenna element 21) to form a scattering arc 24, and the signals that may be reflected back from both ends of the reflector 22 are scattered through the scattering arc 24, thereby improving the detection accuracy of the antenna element 21.

[0051] In the embodiments of this specification, Figure 2 As shown, the detection device 2 further includes a displacement module 23, so that the detection device 2 can move in the chamber 4. For example, the displacement module 23 can be a wheel. By setting the displacement module, the position of the detection device in the chamber can be adjusted to facilitate testing of different devices to be tested or testing of different performances of the devices to be tested.

[0052] In another embodiment of this specification, Figure 5As shown, in the case where the base station air interface test system includes multiple groups of phase and amplitude adjustment devices 5 and multiple signal transceiver devices 6, the multiple groups of phase and amplitude adjustment devices 5 correspond to the multiple signal transceiver devices 6 one by one, and each antenna port of the detection device 2 is respectively connected to any phase and amplitude adjustment module 51 of each group of phase and amplitude adjustment devices 5; by adjusting the multiple phase and amplitude adjustment modules 51 in each group of phase and amplitude adjustment devices 5, the detection device 2 generates a plurality of quiet zones with angle differences at the device under test 1, the number of the plurality of quiet zones with angle differences is the same as the number of the multiple groups of phase and amplitude adjustment devices 5, and each quiet zone is formed based on the joint action of the multiple groups of phase and amplitude adjustment devices 5.

[0053] In another embodiment of the present specification, a phase-amplitude adjustment module 51 is connected to each port of the antenna element 21 in the detection device 2, and the phase and amplitude of each channel are adjusted by adjusting the phase-amplitude adjustment module 51, thereby compensating for the fluctuation amount of the plane wave where the quiet zone is generated, forming a higher quality quiet zone, and then improving the test accuracy of the entire test system.

[0054] In another embodiment of the present specification, each phase-amplitude adjustment module 51 includes a signal attenuator 511 and a phase shifter 512, and the adjustment parameters corresponding to the signal attenuator 511 and the adjustment parameters corresponding to the phase shifter 512 are matched with the port parameters; by adjusting the signal attenuator 511 and the phase shifter 512 in each phase-amplitude adjustment module 51, the phase and amplitude of the signal emitted by each antenna in the antenna element 21 can be adjusted, thereby adjusting the beam synthesized by the antenna element 21, thereby achieving compensation for the plane wave fluctuations generated in the quiet zone.

[0055] In another embodiment of the present specification, there are multiple transceiver links between each signal transceiver device 6 and the detection device 2, and each transceiver link is formed based on each signal transceiver device 6, the phase shifter 512, the signal attenuator 511 and any antenna port of the detection device 2; the number of transceiver links between each signal transceiver device 6 and the detection device 2 is the same as the number of phase and amplitude adjustment modules 51 included in each group of phase and amplitude adjustment devices 5.

[0056] In another embodiment of the present specification, by setting multiple sets of phase and amplitude adjustment devices 5 in the base station air interface test system, multiple quiet zones with angle differences can be generated, and then the device under test 1 can be subjected to multi-angle signal acquisition, which is equivalent to increasing the detection range of the device under test 1 for a single detection to a certain extent. Since the total range of the device under test 1 to be tested remains unchanged, the rotation amplitude of the device under test 1 during the test process can be increased, and the rotation time of the device under test 1 within a cycle will be greatly reduced, thereby effectively improving the test efficiency. In addition, the multiple quiet zones generated in another embodiment of the present specification are used to test different angles of the device under test 1, and there is always only one device under test 1, and signal interference will not be generated in each quiet zone. Therefore, there is no need to consider the isolation problem between each quiet zone, and by increasing the number of transceiver links between the signal transceiver 6 and the detection device 2, the test efficiency can be further improved and the time of air interface testing can be reduced. In addition, the antenna element 21 in another embodiment of the present specification is arranged on the focal line of the one-dimensional reflection surface, rather than at the focus of the spatial reflection surface, thereby providing a guarantee for the detection device 2 to generate multiple high-quality quiet zones at the device under test 1, and no cross-polarization deterioration will occur, thereby ensuring the stability of the multi-quiet zone test.

[0057] In another embodiment of the present specification, by setting up multiple sets of phase and amplitude adjustment devices 5 in the base station air interface test system, multiple quiet zones with angle differences can be generated, and the angles of the quiet zones can be adjusted by adjusting the multiple sets of phase and amplitude adjustment devices 5. Specifically, the angle difference can be equal to the minimum step of rotation of the device under test 1.

[0058] In another embodiment of this specification, Figure 5 As shown, the base station air interface test system includes multiple groups of phase and amplitude adjustment devices 5 and multiple signal transceiver devices 6, each group of phase and amplitude adjustment devices 5 corresponds to a signal transceiver device 6; the antenna element 21 in the detection device 2 includes n antenna ports, and there are m groups of phase and amplitude adjustment devices 5, then each group of phase and amplitude adjustment devices 5 includes n phase and amplitude adjustment modules 51, and the n phase and amplitude adjustment modules 51 in each group of phase and amplitude adjustment devices 5 are respectively connected to the n antenna ports, that is, the number of phase and amplitude adjustment modules 51 in each group of phase and amplitude adjustment devices 5 is the same as the number of antenna ports of the detection device 2, each antenna port is respectively connected to a phase and amplitude adjustment module 51 in each group of phase and amplitude adjustment devices 5, that is, each antenna port is connected to m phase and amplitude adjustment modules 51, and the phase and amplitude of the signal input to the antenna port are adjusted by the m phase and amplitude adjustment modules 51 connected to the antenna port. By adjusting the multiple phase and amplitude adjustment modules 51 in each group of phase and amplitude adjustment devices 5, the detection device 2 can generate multiple quiet zones with angle differences at the device under test 1, such as Figure 5As shown in the quiet zones 1 to m in the figure, the number of the multiple quiet zones with angle differences is the same as the number of the multiple groups of phase-amplitude adjustment devices 5. Since each antenna port is respectively connected to a phase-amplitude adjustment module 51 in each group of phase-amplitude adjustment devices 5, each quiet zone is formed based on the joint action of the multiple groups of phase-amplitude adjustment devices 5. Moreover, by adjusting the multiple phase-amplitude adjustment modules 51 respectively connected to each antenna port, the phase and amplitude of the signal emitted by each antenna in the antenna element 21 can be adjusted, thereby adjusting the beam synthesized by the antenna element 21, thereby compensating for the fluctuation amount of the plane wave at the location where the quiet zone is generated, forming a higher quality quiet zone, and thereby improving the test accuracy of the test system. In addition, it should be noted that Figure 5 The quiet zones 1 to m shown overlap in space, but the angles of the quiet zones are different. For the convenience of display, the multiple quiet zones are drawn separately.

[0059] It can be seen from the embodiments of the base station air interface test system provided by the present invention that the base station air interface test system described in the embodiments of the present invention includes a device to be tested, a detection device, at least one group of phase and amplitude adjustment devices and at least one signal transceiver device, each group of phase and amplitude adjustment devices includes multiple phase and amplitude adjustment modules, and the at least one group of phase and amplitude adjustment devices corresponds one-to-one to the at least one signal transceiver device; the device to be tested is arranged on one side of the detection device, and the at least one group of phase and amplitude adjustment devices and the at least one signal transceiver device are arranged on the other side of the detection device; the detection device includes multiple antenna ports, and the multiple phase and amplitude adjustment modules in each group of phase and amplitude adjustment devices correspond one-to-one to the multiple antenna ports, one end of each phase and amplitude adjustment module is connected to any antenna port of the detection device, and the other end of each phase and amplitude adjustment module is connected to the signal transceiver device corresponding to each group of phase and amplitude adjustment devices, and the adjustment parameters corresponding to each phase and amplitude adjustment module match the port parameters corresponding to the antenna port to which each phase and amplitude adjustment module is connected. The technical solution provided in the embodiments of this specification connects a phase-amplitude adjustment module at each antenna port of the detection device to adjust the phase and amplitude of each channel, thereby compensating for the fluctuation amount of the plane wave at the location where the quiet zone is generated, forming a higher quality quiet zone, and further improving the test accuracy of the test system; in addition, when the phase-amplitude adjustment modules in multiple groups of phase-amplitude adjustment devices are connected to each antenna port of the detection device, the detection device can also generate multiple quiet zones with angle differences at the device to be tested, thereby realizing a single multi-angle test of the device to be tested and improving the test efficiency.

[0060] It should be noted that the order of the above embodiments of the present invention is only for description and does not represent the superiority or inferiority of the embodiments. The above describes specific embodiments of this specification, and other embodiments are within the scope of the attached claims. In some cases, the actions or steps recorded in the claims can be performed in a different order from that in the embodiments and still achieve the desired results.

[0061] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0062] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A base station air interface test system, characterized in that: The invention comprises a device to be tested (1), a detection device (2), at least one group of phase-amplitude adjustment devices (5) and at least one signal transceiver (6), each group of phase-amplitude adjustment devices (5) comprising a plurality of phase-amplitude adjustment modules (51), and the at least one group of phase-amplitude adjustment devices (5) corresponding to the at least one signal transceiver (6) in a one-to-one manner; the detection device (2) comprises an antenna element (21) and a reflector (22), the antenna element (21) being a linear array antenna, and the reflector (22) being a curved panel; The device to be tested (1) is arranged on one side of the detection device (2), and the at least one set of phase and amplitude adjustment devices (5) and the at least one signal transceiver device (6) are arranged on the other side of the detection device (2); The detection device (2) comprises a plurality of antenna ports, the plurality of phase-amplitude adjustment modules (51) in each group of phase-amplitude adjustment devices (5) correspond one-to-one to the plurality of antenna ports, one end of each phase-amplitude adjustment module (51) is connected to any antenna port of the detection device (2), the other end of each phase-amplitude adjustment module (51) is connected to a signal transceiver (6) respectively corresponding to each group of phase-amplitude adjustment devices (5), and the adjustment parameters corresponding to each phase-amplitude adjustment module (51) match the port parameters corresponding to the antenna port to which each phase-amplitude adjustment module (51) is respectively connected.

2. The base station air interface test system according to claim 1, characterized in that: In the case where the base station air interface test system comprises a group of phase and amplitude adjustment devices (5) and a signal transceiver device (6), the plurality of phase and amplitude adjustment modules (51) in the group of phase and amplitude adjustment devices (5) correspond one-to-one to the plurality of antenna ports; by adjusting the plurality of phase and amplitude adjustment modules (51) in the group of phase and amplitude adjustment devices (5), the detection device (2) generates a quiet zone corresponding to the group of phase and amplitude adjustment devices (5) at the device to be tested (1).

3. The base station air interface test system according to claim 1, characterized in that: In the case where the base station air interface test system includes multiple groups of phase and amplitude adjustment devices (5) and multiple signal transceiver devices (6), the multiple groups of phase and amplitude adjustment devices (5) correspond to the multiple signal transceiver devices (6) one by one, and each antenna port of the detection device (2) is respectively connected to any phase and amplitude adjustment module (51) of each group of phase and amplitude adjustment devices (5); by adjusting the multiple phase and amplitude adjustment modules (51) in each group of phase and amplitude adjustment devices (5), the detection device (2) generates multiple quiet zones with angle differences at the device to be tested (1), the number of the multiple quiet zones with angle differences is the same as the number of the multiple groups of phase and amplitude adjustment devices (5), and each quiet zone is formed based on the joint action of the multiple groups of phase and amplitude adjustment devices (5).

4. The base station air interface test system according to claim 2 or 3, characterized in that: Each phase-amplitude adjustment module (51) comprises a signal attenuator (511) and a phase shifter (512), and the adjustment parameters corresponding to the signal attenuator (511) and the adjustment parameters corresponding to the phase shifter (512) both match the port parameters.

5. The base station air interface test system according to claim 4, characterized in that: There are multiple transceiver links between each signal transceiver device (6) and the detection device (2), and each transceiver link is formed based on each signal transceiver device (6), the phase shifter (512), the signal attenuator (511) and any antenna port of the detection device (2); the number of transceiver links between each signal transceiver device (6) and the detection device (2) is the same as the number of phase-amplitude adjustment modules (51) included in each group of phase-amplitude adjustment devices (5).

6. The base station air interface test system according to claim 1, characterized in that: The cross section of the reflector (22) in the vertical direction is in the shape of an arc, the array direction of the antenna elements (21) extends along the horizontal direction of the reflector (22), and the antenna elements (21) are located at the focal line of the reflector (22).

7. The base station air interface test system according to claim 1, characterized in that: Both ends of the reflector (22) in the arc extension direction are bent in a direction away from the antenna element (21) to form scattering arcs (24).

8. The base station air interface test system according to claim 1, characterized in that: The base station air interface test system further comprises a chamber (4) for providing a test environment, wherein a placement platform (3) for placing the device to be tested (1) is arranged in the chamber (4).

9. The base station air interface test system according to claim 8, characterized in that: The detection device (2) further comprises a displacement module (23) so as to enable the detection device (2) to move within the chamber (4).

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