CN114553327B - System and method for testing wireless resource management consistency of millimeter wave terminal with multiple arrival angles - Google Patents
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Abstract
The invention discloses a system and a method for testing wireless resource management consistency of a millimeter wave terminal with multiple arrival angles, wherein the system comprises the following steps: the system comprises a feed source system, a metamaterial lens array, a carrying turntable, a test instrument and a change-over switch box; electromagnetic waves radiated by the feed source system are reflected or transmitted by the metamaterial lens array to form plane waves, and downlink signals are contained; the feed source system receives electromagnetic waves reflected by the tested equipment and reflected or transmitted by the metamaterial lens array, wherein the electromagnetic waves comprise uplink signals; the object carrying turntable is positioned in the range of the plane wave dead zone and is used for carrying tested equipment and adjusting the angle of the tested equipment; the test instrument is used for measuring and analyzing the uplink signal and the downlink signal; and the change-over switch box is used for switching the uplink signals and the downlink signals of the feed source system and the test instrument. The method and the device realize the test of the radio resource management under multiple arrival angles, improve the dynamic range of a test system, and solve the problem of the arrival angle in the consistency test of the radio resource management of the 5G millimeter wave terminal.
Description
Technical Field
The application relates to the technical field of wireless communication measurement, in particular to a system and a method for testing wireless resource management consistency of a millimeter wave terminal with multiple arrival angles.
Background
New generation 5G (fifth generation) mobile technologies need to achieve higher spectrum efficiency in a limited frequency band, and 3GPP (third generation partnership project) discusses and introduces Massive MIMO (multiple input multiple output) technology and expansion to the operating frequency band of millimeter waves to improve cell capacity and user experience rate. In the 5G FR1 frequency band and the 4G terminal equipment, a radio frequency cable direct connection conduction mode is adopted to test the radio resource management consistency. However, in the FR2 band, the connection between the rf unit and the antenna of the device is more compact and highly integrated, and there is no port available for performing a radio resource management consistency test.
Fig. 1 is a schematic diagram of a prior art millimeter wave terminal radio resource management consistency test system. As shown in FIG. 1, the conventional millimeter wave terminal wireless resource management consistency test system comprises a reflecting surface, a feed source system, a millimeter wave chain-building antenna, a 4G chain-building antenna, a turntable, a darkroom, an instrument and a control system. The test system can realize the test of Radio Resource Management (RRM) under a single angle of arrival, but cannot meet the test of two angle of arrival requirements in 3 GPP.
Disclosure of Invention
The embodiment of the application provides a system and a method for testing wireless resource management consistency of a millimeter wave terminal with multiple arrival angles, which solve the problem that a plane wave feed source is long in distance generated in the prior art, can adjust spherical electromagnetic waves to achieve the effect of plane waves under the condition of short distance and low cost, and realize testing capability of far field and compact range.
The embodiment of the application provides a millimeter wave terminal wireless resource management consistency test system with multiple arrival angles, which comprises the following steps: the system comprises a feed source system, a metamaterial lens array, a carrying turntable, a test instrument and a change-over switch box;
Electromagnetic waves radiated by the feed source system are reflected or transmitted by the metamaterial lens array to form plane waves, and downlink signals are contained; the feed source system receives electromagnetic waves reflected by the tested equipment and reflected or transmitted by the metamaterial lens array, wherein the electromagnetic waves comprise uplink signals; the object carrying turntable is positioned in the range of the plane wave dead zone and is used for carrying tested equipment and adjusting the angle of the tested equipment;
The test instrument is used for measuring and analyzing the uplink signal and the downlink signal;
the switch box is used for switching the uplink signals and the downlink signals of the feed source system and the test instrument.
Further, the metamaterial lens array is a plurality of lens arrays and is used for generating the plane waves with the set incoming wave directions respectively.
Further, the polarization mode of the feed system comprises single-line polarization, double-line polarization or circular polarization.
Further, the point of generation of the plane wave is between 50cm and 150cm from the metamaterial lens array.
Further, the metamaterial lens array is composed of 1 or more layers of dielectric substrates arranged in parallel and a metal array structure positioned on the dielectric substrates.
On the other hand, the invention provides a method for testing the wireless resource management consistency of a millimeter wave terminal with multiple arrival angles, which comprises the following steps:
Electromagnetic waves radiated by the feed source system are reflected or transmitted by the metamaterial lens array to form plane waves, and downlink signals are contained;
The feed source system receives electromagnetic waves reflected by the tested equipment and reflected or transmitted by the metamaterial lens array, wherein the electromagnetic waves comprise uplink signals;
adjusting the angle of the tested equipment in the range of the plane wave dead zone;
And switching the uplink signals and the downlink signals of the feed source system and the test instrument through a switching box, and measuring and analyzing the uplink signals and the downlink signals.
Further, a first metamaterial lens array and a feed system for generating a plane wave in a first incoming wave direction and a second metamaterial lens array and a feed system for generating a plane wave in a second incoming wave direction are combined to generate a plane wave in a third incoming wave direction.
Further, plane waves in a plurality of incoming wave directions are generated through a plurality of metamaterial lens arrays and feed systems which are arranged in a static mode in turn, or the positions of the plane waves are changed through at least 2 movable metamaterial lens arrays and feed systems, and two plane waves in the incoming wave directions are generated simultaneously.
Further, each metamaterial lens array corresponds to a feed source system and is used for generating a plane wave in an incoming wave direction.
Further, the range of the plane wave deadband is increased or decreased in at least one of the following ways:
changing the relative position between the feed system and the metamaterial lens array;
changing the layer number of the metamaterial lens array;
the distance between the metamaterial lens arrays of each layer is changed.
The above at least one technical scheme adopted by the embodiment of the application can achieve the following beneficial effects:
the system and the method can generate a plurality of plane waves meeting the test requirement at a relatively short distance, can improve the dynamic range of the system and reduce the cost of the test system.
The system and the method are applied to the consistency test of wireless communication wireless resource management, realize more than two angles of arrival, for example, the tests of which the included angle is 0 degree, 30 degrees, 60 degrees, 90 degrees, 120 degrees and 150 degrees, and solve the problem of two angles of arrival in the consistency test of wireless resource management of the 5G millimeter wave terminal.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a schematic diagram of a millimeter wave terminal wireless resource management consistency test system in the prior art;
fig. 2 is a schematic diagram of transmission type arrangement of metamaterial of the millimeter wave terminal wireless resource management consistency test system 4 with multiple arrival angles;
fig. 3 is a schematic diagram of transmission type arrangement of metamaterials of a millimeter wave terminal wireless resource management consistency test system 6 with multiple arrival angles;
fig. 4 is a schematic diagram of a reflective arrangement of metamaterials in the millimeter wave terminal wireless resource management consistency test system 4 with multiple arrival angles according to the present invention;
fig. 5 is a schematic diagram of a reflective arrangement of metamaterials of a millimeter wave terminal radio resource management consistency test system 6 with multiple angles of arrival according to the present invention;
fig. 6 is a schematic diagram of a mobile transmission type arrangement of a system for testing the consistency of wireless resource management of a millimeter wave terminal with multiple arrival angles according to the present invention;
fig. 7 is a schematic diagram of a mobile reflection type arrangement of a system for testing the consistency of wireless resource management of a millimeter wave terminal with multiple arrival angles according to the present invention;
FIG. 8 is a schematic diagram of the material composition of a metamaterial lens array in accordance with the present invention;
FIG. 9 is a schematic diagram of a layer 1 structure of a metamaterial lens array in accordance with the present invention;
FIG. 10 is a schematic diagram of a layer 2 structure of a metamaterial lens array in accordance with the present invention;
Fig. 11 is a flowchart illustrating steps of a method for testing wireless resource management consistency of a millimeter wave terminal with multiple arrival angles according to the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The application provides a multi-arrival angle millimeter wave terminal wireless resource management consistency test system, which is different from the existing single-arrival angle test system based on compact ranges, can realize the test of wireless resource management (RRM) under the single arrival angle under the conditions of closer distance and lower cost, can improve the dynamic range of the test system, can realize the test of two or more arrival angles, for example, the test of arrival angles of 0 degree, 30 degrees, 60 degrees, 90 degrees, 120 degrees and 150 degrees, and solves the problem of two arrival angles in the consistency test of the wireless resource management of a 5G millimeter wave terminal.
The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.
As shown in fig. 2-7, the present invention provides a system for testing wireless resource management consistency of a millimeter wave terminal with multiple arrival angles, comprising: feed system 22, metamaterial lens array 21, carrying turntable 24, test instrument 25 and change-over switch box 26.
Electromagnetic waves radiated by the feed system 22 are reflected or transmitted by the metamaterial lens array 21 to form plane waves, including downlink signals.
The feed system 22 receives electromagnetic waves reflected by the device under test, reflected or transmitted through the metamaterial lens array 21, including upstream signals.
The carrying turntable 24 is positioned in the range of the plane wave dead zone and is used for carrying tested equipment and adjusting the angle of the tested equipment; the tested equipment comprises a mobile phone, a computer, customer front-end equipment (CPE Customer Premise Equipment), a vehicle-mounted terminal and the like, and is used for adjusting the angle of the tested equipment to reach the tested direction.
The test meter 25 is configured to measure and analyze the uplink signal and the downlink signal. Test meter 25 includes, but is not limited to, a wireless signal tester, a signal generator, a spectrum analyzer, a vector network analyzer, and a power meter for measuring and analyzing wireless signals, the meter being a plurality of.
The switch box 26 is used for switching the uplink signal and the downlink signal of the feed system 22 and the test meter 25, and includes, but is not limited to, a power amplifier, a low noise amplifier, a pass-through, and the like.
In some embodiments of the present invention, the metamaterial lens array 21 is plural and is used to generate the plane waves with the directions of the incoming waves.
In some embodiments of the present invention, the polarization of the feed system 22 comprises single-line polarization, double-line polarization, or circular polarization.
Further, in the embodiments of fig. 2 to 7, the system for testing the wireless resource management consistency of the millimeter wave terminal with multiple arrival angles further includes:
a darkroom 23 for shielding external interference signals and providing a clean space for electromagnetic environment;
The control system 27 is used for controlling the carrying turntable 24 to drive the tested equipment, controlling the test instrument 25 to collect wireless signals, and analyzing and judging the position information of the carrying turntable 24 and the wireless signals of the test instrument 25.
In some embodiments of the invention, the angle of the plane wave comprises several angles, such as: 0 °, 30 °,90 ° and 150 °.
In some embodiments of the present invention, when the incoming wave direction of the plane wave is at two different angles, the vectors are superimposed to form an angular incoming wave direction. For example, when the incoming wave direction of the plane wave is 30 ° and 90 °, vector superposition forms an incoming wave direction of 60 °; when the incoming wave directions of the plane waves are 90 degrees and 150 degrees, vectors are overlapped to form 120 degrees of incoming wave directions.
Regarding transmission type plane wave generation, preferably, in fig. 2-3 and 6, the system for testing radio resource management consistency of the millimeter wave terminal with multiple arrival angles comprises: the metamaterial lens array 21 is used for receiving signals of the feed source system 22, converting electromagnetic waves from the feed source system into plane waves through transmission, and radiating the plane waves to tested equipment on the carrying turntable; the metamaterial lens is also used for receiving wireless signals reflected by the tested device and outputting the test signals to the feed system 22 in a transmission mode. The feed system 22 is used for receiving the wireless signals transmitted by the metamaterial lens array 21 and outputting the wireless signals to the test instrument 25.
With respect to the reflective plane wave generation, preferably, in fig. 4-5 and 7, the system for testing the radio resource management consistency of the millimeter wave terminal with multiple arrival angles comprises: the metamaterial lens array 21 is used for receiving signals of the feed source system 22, converting electromagnetic waves from the feed source system into plane waves through reflection, and radiating the plane waves to tested equipment on the carrying turntable; the metamaterial lens is further used for receiving wireless signals reflected by the tested device and outputting the test signals to the feed system 22 in a reflecting mode. The feed system 22 is used for receiving the wireless signals reflected by the metamaterial lens array 21 and outputting the wireless signals to the test instrument 25.
Preferably, the system of the present application includes a plurality of feed systems 22 for receiving the wireless signals transmitted by the metamaterial lens array or outputting the wireless signals to the test meter. For example, as shown in fig. 2, in the present embodiment, a plurality of metamaterial lens arrays 21 are used for receiving wireless signals emitted by a plurality of devices under test and transmitting and outputting test signals to a feed system, or transmitting signals received by a plurality of feed systems to the devices under test on a carrier turntable.
Fig. 2 and 4 are schematic diagrams of metamaterial arrangement of the millimeter wave terminal radio resource management consistency test system 4 with multiple arrival angles. Fig. 2 is a plane wave formed by the transmission of the feed system through the metamaterial lens array at a certain distance, and fig. 4 is a plane wave formed by the reflection of the feed system through the metamaterial lens array at a certain distance. The system comprises four fixed metamaterial lens arrays 21, four feed systems 22, a darkroom 23, a carrying turntable 24, a test instrument 25, a change-over switch box 26 and a control system 27, wherein the carrying turntable and the test instrument are connected with the control system, and the test instrument is connected with the feed systems through the change-over switch box. The angles of the four metamaterial lens arrays are 0 degree, 30 degree, 90 degree and 150 degree as shown in fig. 2, four incoming wave directions with angles of 0 degree, 30 degree, 90 degree and 150 degree can be simulated, meanwhile, the incoming wave directions with angles of 60 degree can be formed by vector superposition of 30 degree and 90 degree, the incoming wave directions with angles of 120 degree can be formed by vector superposition of 90 degree and 150 degree, and accordingly testing requirements of 0 degree, 30 degree, 60 degree, 90 degree, 120 degree and 150 degree are met.
The requirements for realizing the included angles of the two angles of arrival of 0 degrees, 30 degrees, 60 degrees, 90 degrees, 120 degrees and 150 degrees also comprise the test system layout diagrams shown in fig. 3 and 5. Fig. 3 and 5 are schematic layout diagrams of metamaterials of a millimeter wave terminal wireless resource management consistency test system 6 with multiple arrival angles. Wherein, fig. 3 is that the feed system is transmitted by the metamaterial lens array to form plane waves at a certain distance, and fig. 5 is that the feed system is reflected by the metamaterial lens array to form plane waves at a certain distance. The system comprises six fixed metamaterial lens arrays 31, six feed source systems 32, a darkroom 33, a carrying turntable 34, a test instrument 35, a change-over switch box 36 and a control system 37, wherein the carrying turntable and the test instrument are connected with the control system, and the test instrument is connected with the feed source systems through the change-over switch box. The angles of the six metamaterial lens arrays are 0 degrees, 30 degrees, 60 degrees, 90 degrees, 120 degrees and 150 degrees as shown in fig. 3, and the testing requirements of two arrival angles in 3GPP can be met.
Further, in the darkroom 23, when the metamaterial lens array 21 and the feed system 22 are two or more, the metamaterial lens array 21 and the feed system 22 are movable, the metamaterial lens array 21 and the feed system 22 are respectively adjusted to different angles, for example, 0 °,30 °,60 °,90 °,120 ° or 150 °, the feed system 22 emits electromagnetic waves to the metamaterial lens array 21, the electromagnetic waves are converted into plane waves through the metamaterial lens array 21, the carrier turntable 24 controls the position of the tested device corresponding to the plane waves, the plane waves are emitted to the tested device on the carrier turntable 24, the tested device receives the plane waves, the reflected waves are reflected to the metamaterial lens array 21, the plane waves are formed after passing through the metamaterial lens array 21, the plane waves are fed to the feed system 22, the reflected waves are transmitted to the test meter 25 through the switch box 26, and the reflected waves are transmitted to the test meter 25 through the switch box 26 under the control of the control system 27. The up signal and the down signal of the feed system 22 and the test meter 25 are switched by the switch box 26, and the up signal and the down signal are measured and analyzed.
Fig. 6 is a schematic diagram of a mobile transmission type arrangement of a multi-arrival-angle millimeter wave terminal radio resource management consistency test system according to the present invention, and fig. 7 is a schematic diagram of a mobile reflection type arrangement of a multi-arrival-angle millimeter wave terminal radio resource management consistency test system according to the present invention. The system comprises two movable metamaterial lens arrays 61, two feed source systems 62, a darkroom 63, a carrying turntable 64, a test instrument 65, a change-over switch box 66 and a control system 67, wherein the carrying turntable and the test instrument are connected with the control system, and the test instrument is connected with the feed source systems through the change-over switch box. The angles of the two metamaterial lens arrays form 0 degrees, 30 degrees, 60 degrees, 90 degrees, 120 degrees and 150 degrees as shown in fig. 6 through physical movement, so that the testing requirements of two arrival angles in 3GPP can be met.
As shown in fig. 8-10, in some embodiments of the present invention, the metamaterial lens array 21 is composed of 1 or more layers of dielectric substrates arranged in parallel and a metal array structure thereon.
In some embodiments of the invention, the point of generation of the plane wave is between 50cm and 150cm from the metamaterial lens array 21.
The metamaterial lens array and the feed source system are matched within a range of 50cm to 150cm away from the metamaterial lens array to generate plane waves, compared with the existing test system, the forming distance of the plane waves is shortened, and according to a free space loss calculation formula:
Loss＝32.4478+20*log10(f)+20*log10(D) (1)
Where Loss refers to space Loss, where the unit is dB, f is frequency, the unit is MHz, D is transmit-receive distance, and the unit is Km. The receiving and transmitting distance D is reduced, and the space Loss Loss is correspondingly reduced, so that the dynamic range of the system is improved.
The metamaterial lens array and the feed system are key to determining the quality of planar waves in a dead zone, as shown in fig. 8, the metamaterial lens is generally composed of a dielectric substrate and a metal array structure, wherein the dielectric substrate is generally made of a material including but not limited to a PCB, and the metal array structure is generally made of a material including but not limited to copper, molybdenum, gold and the like.
The metal array structure is the core for realizing amplitude and phase adjustment, but the phase adjustment capability of the single-layer metamaterial lens is generally smaller than 100 degrees, the number of layers of the metamaterial array comprises, but is not limited to, a metamaterial lens array 1-layer structure shown in fig. 9 and a metamaterial lens array 2-layer structure shown in fig. 10, and the maximum phase adjustment of 360 degrees is realized by adopting a plurality of layers of metamaterial lenses so as to achieve the effect of plane waves in a certain dead zone range.
On the other hand, as shown in fig. 11, the present invention provides a method for testing wireless resource management consistency of a millimeter wave terminal with multiple arrival angles, comprising:
Step S1: electromagnetic waves radiated by the feed system 22 are reflected or transmitted by the metamaterial lens array 21 to form plane waves, including downlink signals;
Step S2: the feed system 22 receives electromagnetic waves reflected by the tested device and reflected or transmitted by the metamaterial lens array 21, wherein the electromagnetic waves comprise uplink signals;
Step S3: adjusting the angle of the tested equipment in the range of the plane wave dead zone;
Step S4: the up signal and the down signal of the feed system 22 and the test meter 25 are switched by the switch box 26, and the up signal and the down signal are measured and analyzed.
In some embodiments of the present invention, the first metamaterial lens array 21 for generating a plane wave in a first incoming wave direction and the second metamaterial lens array 21 for generating a plane wave in a second incoming wave direction are combined to generate a plane wave in a third incoming wave direction.
In some embodiments of the present invention, plane waves of a plurality of incoming wave directions are generated by alternately operating a plurality of metamaterial lens arrays 21 and feed systems 22 arranged stationary as in fig. 2 to 5, or plane waves of two incoming wave directions are generated simultaneously by changing positions of at least 2 metamaterial lens arrays 21 and feed systems 22 movable as in fig. 6 to 7.
In some embodiments of the present invention, each metamaterial lens array 21 corresponds to a feed system 22 for generating a plane wave in an incoming wave direction.
In some embodiments of the invention, the range of the plane wave deadband is increased or decreased in at least one of the following ways:
changing the relative position between the feed system 22 and the metamaterial lens array 21;
As shown in fig. 9 and 10, the number of layers of the metamaterial lens array 21 is changed, for example, one layer of the metamaterial lens array 21 is changed to two layers; the metamaterial lens array 1 layer structure shown in fig. 9 and the metamaterial lens array 2 layer structure shown in fig. 10, and
The distance between the layers of metamaterial lens arrays 21 is changed.
The invention achieves the following steps:
The millimeter wave terminal wireless resource management consistency test system with multiple arrival angles can generate a plurality of plane waves meeting test requirements at a relatively short distance, so that the dynamic range of the system can be increased, and the cost of the test system can be reduced.
The system for testing the consistency of the wireless resource management of the millimeter wave terminal with multiple arrival angles is applied to the consistency test of the wireless resource management of wireless communication, realizes the test that the included angle of the two arrival angles is 0 degree, 30 degrees, 60 degrees, 90 degrees, 120 degrees and 150 degrees, and solves the problem of the two arrival angles in the consistency test of the wireless resource management of the 5G millimeter wave terminal.
Although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application. The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (9)
1. A millimeter wave terminal wireless resource management consistency test system with multiple arrival angles is characterized by comprising: the system comprises a feed source system, a metamaterial lens array, a carrying turntable, a test instrument and a change-over switch box;
Electromagnetic waves radiated by the feed source system are reflected or transmitted by the metamaterial lens array to form plane waves, and downlink signals are contained;
the metamaterial lens array is a plurality of lens arrays and is respectively used for generating the plane waves for setting the incoming wave direction;
The angle of the plane wave comprises a plurality of angles;
The metamaterial lens arrays are used for receiving signals of the feed systems and transmitting the signals to tested equipment on the carrying turntable;
The feed source system receives electromagnetic waves reflected by the tested equipment and reflected or transmitted by the metamaterial lens array, wherein the electromagnetic waves comprise uplink signals;
the object carrying turntable is positioned in the range of the plane wave dead zone and is used for carrying tested equipment and adjusting the angle of the tested equipment;
The test instrument is used for measuring and analyzing the uplink signal and the downlink signal;
the switch box is used for switching the uplink signals and the downlink signals of the feed source system and the test instrument.
2. The system for testing the consistency of wireless resource management of the millimeter wave terminal with multiple arrival angles according to claim 1, wherein the polarization mode of the feed system comprises single-line polarization, double-line polarization or circular polarization.
3. The system for testing the consistency of radio resource management of the millimeter wave terminal with multiple angles of arrival according to claim 1, wherein the generation point of the plane wave is between 50cm and 150cm from the metamaterial lens array.
4. The system for testing the wireless resource management consistency of the millimeter wave terminal with multiple arrival angles according to claim 1, wherein the metamaterial lens array consists of 1 or more layers of dielectric substrates arranged in parallel and a metal array structure positioned on the dielectric substrates.
5. A multi-arrival-angle millimeter wave terminal radio resource management consistency test method, characterized in that the multi-arrival-angle millimeter wave terminal radio resource management consistency test system is used, comprising:
Electromagnetic waves radiated by the feed source system are reflected or transmitted by the metamaterial lens array to form plane waves, and downlink signals are contained;
The feed source system receives electromagnetic waves reflected by the tested equipment and reflected or transmitted by the metamaterial lens array, wherein the electromagnetic waves comprise uplink signals;
adjusting the angle of the tested equipment in the range of the plane wave dead zone;
And switching the uplink signals and the downlink signals of the feed source system and the test instrument through a switching box, and measuring and analyzing the uplink signals and the downlink signals.
6. The method for testing the consistency of wireless resource management of the millimeter wave terminal with multiple arrival angles according to claim 5, wherein the first metamaterial lens array for generating the plane wave with the first incoming wave direction and the second metamaterial lens array for generating the plane wave with the second incoming wave direction are combined to generate the plane wave with the third incoming wave direction.
7. The method for testing the wireless resource management consistency of the multi-arrival-angle millimeter wave terminal according to claim 5, wherein,
The method comprises the steps of generating plane waves in a plurality of incoming wave directions through a plurality of metamaterial lens arrays and feed systems which are arranged in a static mode in a rotating mode, or generating plane waves in two incoming wave directions simultaneously through at least 2 movable metamaterial lens arrays and feed systems.
8. The method for testing the wireless resource management consistency of the millimeter wave terminal with multiple arrival angles according to claim 5, wherein each metamaterial lens array corresponds to a feed source system and is used for generating plane waves in an incoming wave direction.
9. The method for testing the wireless resource management consistency of the millimeter wave terminal with multiple arrival angles according to claim 5, wherein the range of the dead zone of the plane wave is increased or decreased in at least one of the following ways:
changing the relative position between the feed system and the metamaterial lens array;
changing the layer number of the metamaterial lens array;
the distance between the metamaterial lens arrays of each layer is changed.
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| CN202210143269.XA CN114553327B (en) | 2022-02-16 | System and method for testing wireless resource management consistency of millimeter wave terminal with multiple arrival angles |
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| CN202210143269.XA CN114553327B (en) | 2022-02-16 | System and method for testing wireless resource management consistency of millimeter wave terminal with multiple arrival angles |
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| CN114553327B true CN114553327B (en) | 2024-07-12 |
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| CN112867045A (en) * | 2021-01-15 | 2021-05-28 | 中国信息通信研究院 | Multi-compact range measuring system and method |
| CN113300115A (en) * | 2021-05-18 | 2021-08-24 | 北京邮电大学 | Electromagnetic metamaterial lens unit and metamaterial lens antenna |
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| CN112311622A (en) * | 2020-10-20 | 2021-02-02 | 北京电信技术发展产业协会 | Consistency test method and system for wireless resource management of 5G terminal |
| CN112867045A (en) * | 2021-01-15 | 2021-05-28 | 中国信息通信研究院 | Multi-compact range measuring system and method |
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