CN111200838B - Massive MIMO external field test method and system - Google Patents

Abstract

The invention provides a Massive MIMO external field test method and a system, belonging to the technical field of wireless communication. Massive MIMO external field test system, including: the test instrument carrying tool is used for carrying a test instrument to finish testing in the air; the positioning device is used for acquiring the position information of the test instrument; the distance and angle measuring device is used for measuring the distance and the angle between the antenna of the tested base station and the test instrument; the test instrument is used for completing the test of communication data; and the ground control device is used for controlling the motion of the test instrument carrying tool according to the position information obtained by the positioning device and the measurement data obtained by the distance and angle measurement device and processing the test data obtained by the test instrument. By the technical scheme, the external field test of the 5G Massive MIMO can be efficiently and accurately finished.

Description

Massive MIMO field test method and system

Technical Field

The present invention relates to the field of wireless communication technology, and in particular to a Massive MIMO field test method and system.

Background Art

In order to improve coverage and spectrum efficiency, 5G systems use Massive MIMO (massive antenna technology), which has become a key technology for 5G. 5G Massive MIMO technology improves system performance through large-scale antenna arrays and beam scanning, which can not only realize beamforming and beam scanning in the horizontal direction, but also realize beamforming and beam scanning in the vertical direction, as shown in Figure 1.

At present, telecom operators or base station manufacturers mainly use manual driving or walking to carry road test instruments to conduct field tests in order to evaluate Massive MIMO performance. For high-rise building coverage, when using Massive MIMO technology for outdoor coverage and indoor coverage, it is necessary to carry instruments to test the signal on each floor of the high-rise building, which has low test efficiency and poor test accuracy. Moreover, it is difficult to accurately evaluate the three-dimensional coverage effect of Massive MIMO with current test methods.

The existing field test solutions have the following disadvantages:

Long test time and low efficiency: During the Massive MIMO field test, manual testing efficiency is very low. For each planned test point, it is necessary to walk or drive to complete the test of relevant indicators.

Poor test accuracy: Due to differences in operating procedures and professional knowledge among different testers, test deviations are inevitable. Even if the same tester is at different test locations, there will be deviations due to test angles, antenna positions, etc. In addition, current instruments and test methods cannot accurately test the three-dimensional coverage effect of Massive MIMO, and can only complete map dot testing based on field conditions.

Summary of the invention

The technical problem to be solved by the present invention is to provide a Massive MIMO field test method and system, which can efficiently and accurately complete the 5G Massive MIMO field test.

To solve the above technical problems, the embodiments of the present invention provide the following technical solutions:

On the one hand, an embodiment of the present invention provides a Massive MIMO field test system, including:

Test instrument carrier, used to carry test instruments to complete the test in the air;

The test instrument is used to complete the test of communication data;

The ground control device is used to control the movement of the test instrument carrier and process the test data obtained by the test instrument.

Furthermore, it also includes:

A positioning device, used to obtain the position information of the test instrument;

A distance and angle measuring device, used to measure the distance and angle between the base station antenna under test and the test instrument;

The ground control device is specifically used to control the movement of the test instrument carrier according to the position information obtained by the positioning device and the measurement data obtained by the distance and angle measuring device.

Furthermore, the test instrument carrier is a drone.

Furthermore, the test data includes at least one of the following: signal strength, cell information, and beam information.

Furthermore, the ground control device is also used to control the base station under test to transmit a fixed beam; or

The auxiliary terminal on the auxiliary vehicle is controlled to communicate uninterruptedly with the base station under test to fix the beam under test.

Furthermore, the ground control device is specifically used to establish a spherical coordinate system based on the position information of the base station antenna under test obtained by the ranging and angle measuring device, and the base station antenna under test is located at the center of the spherical coordinate system; determine the far-field condition according to the size of the base station antenna under test and the test frequency band; determine the aerial flight route and test points of the test instrument carrier so that the test instrument can be tested at the test points, and the spherical coordinate radius L of the aerial flight route meets the far-field condition; receive test data of the test instrument, and process the test data.

The embodiment of the present invention further provides a Massive MIMO field test method, which is applied to the Massive MIMO field test system as described above, and includes:

Using the test instrument carrier to carry the test instrument to perform testing in the air;

Using the test instrument to complete the test of communication data;

The ground control device is used to control the movement of the test instrument carrier and process the test data obtained by the test instrument.

Furthermore, the Massive MIMO field test system further includes a positioning device and a distance and angle measurement device, and the method further includes:

Using the positioning device to obtain the position information of the test instrument;

Using the distance and angle measuring device to measure the distance and angle between the base station antenna under test and the test instrument;

The use of the ground control device to control the movement of the test instrument vehicle includes:

The ground control device is used to control the movement of the test instrument carrier according to the position information obtained by the positioning device and the measurement data obtained by the distance and angle measuring device.

Furthermore, when performing the test, the method further includes:

Using the ground control device to control the base station under test to transmit a fixed beam; or

The auxiliary terminal on the auxiliary vehicle is used to communicate uninterruptedly with the base station under test to fix the measured beam.

Furthermore, the use of the ground control device to control the movement of the test instrument carrier according to the position information obtained by the positioning device and the measurement data obtained by the distance and angle measuring device, and processing the test data obtained by the test instrument includes:

A spherical coordinate system is established according to the position information of the measured base station antenna obtained by the distance and angle measuring device, wherein the measured base station antenna is located at the center of the spherical coordinate system;

Determine the far-field condition according to the size of the base station antenna under test and the test frequency band;

Determine the aerial flight route and test points of the test instrument carrier so that the test instrument is tested at the test points, and the spherical coordinate radius L of the aerial flight route satisfies the far field condition;

The test data of the test instrument is received, and the test data is processed.

3D，3λ三者中的最大值，其中D为被测基站天线的尺寸，λ为测试频段的波长；当所述测试仪表与被测基站天线的距离L>R时，认为满足远场条件。Furthermore, the far-field condition R is:

The maximum value among 3D and 3λ, where D is the size of the base station antenna under test and λ is the wavelength of the test frequency band; when the distance L>R between the test instrument and the base station antenna under test, it is considered that the far field condition is met.

Furthermore, the determining of the aerial flight route and test points of the test instrument carrier includes:

The test point is determined according to the following formula:

Wherein, P is the total power radiated by the antenna of the base station under test in the air, EIRP is the effective isotropic radiated power at any point in the air, (θ, φ) is the coordinate of the test point in the spherical coordinate system, θ has N values from 0 degrees to 180 degrees, and φ has M values from 0 degrees to 360 degrees.

An embodiment of the present invention further provides a Massive MIMO field test device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor; when the processor executes the program, the Massive MIMO field test method as described above is implemented.

An embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps in the Massive MIMO field test method described above are implemented.

The embodiments of the present invention have the following beneficial effects:

In the above scheme, a Massive MIMO field test system is provided, including a test instrument carrier, a test instrument, and a ground control device, which can cooperate with each other to efficiently complete the Massive MIMO field test. After setting the flight route and test points of the test instrument carrier during the entire test process, the test instrument carrier can fly according to the set flight route, and the test instrument automatically completes all tests and transmits the test data back to the ground control device in real time. The ground control device determines the accuracy and validity of the test data in real time, and finally obtains a Massive MIMO three-dimensional coverage map, which is much better than the test efficiency of manually carrying the test instrument to the test site for testing.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of beam scanning in Massive MIMO;

FIG2 is a block diagram of a Massive MIMO field test system according to an embodiment of the present invention;

FIG3 is a schematic diagram of a flow chart of a Massive MIMO field test method according to an embodiment of the present invention;

FIG4 is a schematic flow chart of a Massive MIMO field test method according to a specific embodiment of the present invention;

FIG5 is a schematic diagram of a spherical coordinate system according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of the aerial flight route and test points of the UAV according to an embodiment of the present invention.

DETAILED DESCRIPTION

In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention more clear, they will be described in detail below with reference to the accompanying drawings and specific embodiments.

The embodiments of the present invention provide a Massive MIMO field test method and system, which can efficiently and accurately complete the field test of 5G Massive MIMO.

An embodiment of the present invention provides a Massive MIMO field test system, as shown in FIG2 , including:

A test instrument carrier 11 is used to carry a test instrument 14 to complete the test in the air;

The test instrument 14 is used to complete the test of communication data;

The ground control device 15 is used for the movement of the test instrument carrier 11 and for processing the test data obtained by the test instrument 14 .

Furthermore, as shown in FIG2 , the system further includes:

A positioning device 12, used to obtain the position information of the test instrument 14;

The distance and angle measuring device 13 is used to measure the distance and angle between the base station antenna under test and the test instrument 14;

The ground control device 15 is specifically used to control the movement of the test instrument carrier 11 according to the position information obtained by the positioning device 12 and the measurement data obtained by the distance and angle measuring device 13 .

In the present embodiment, a Massive MIMO field test system is provided, including a test instrument carrier 11, a positioning device 12, a distance measuring and angle measuring device 13, a test instrument 14, and a ground control device 15, which cooperate with each other to efficiently complete the Massive MIMO field test. After setting the flight route and test points of the test instrument carrier 11 during the entire test process, the test instrument carrier 11 can fly according to the set flight route, and the test instrument 14 automatically completes all tests and transmits the test data back to the ground control device 15 in real time. The ground control device 15 determines the accuracy and validity of the test data in real time, and finally obtains a Massive MIMO three-dimensional coverage map, which is much better than the test efficiency of manually carrying the test instrument 14 to the test site for testing. In the present embodiment, the entire test process is automatically completed, and the positioning device 12 and the distance measuring and angle measuring device 13 ensure the accuracy of the test instrument carrier 11 flight route and test points, avoiding the test errors caused by manual operation, thereby greatly improving the accuracy and objectivity of the test.

The positioning device 12, the distance and angle measuring device 13 and the test instrument 14 may be provided separately or in an integrated structure.

Furthermore, the Massive MIMO field test system also includes:

The adjustable attenuator is used to simulate the channel insertion loss, so that the insertion loss of the indoor channel can be simulated to complete the indoor coverage evaluation.

Specifically, the test instrument carrier 11 may be a drone.

Furthermore, the test data includes at least one of the following: signal strength, cell information, and beam information.

Furthermore, the ground control device 15 is also used to control the base station under test to transmit a fixed beam; or

The auxiliary terminal on the auxiliary vehicle is controlled to communicate uninterruptedly with the base station under test to fix the beam under test, so that the beam under test can be fixed for testing.

Furthermore, the ground control device 15 is specifically used to establish a spherical coordinate system based on the position information of the base station antenna under test obtained by the ranging and angle measuring device 13, and the base station antenna under test is located at the center of the spherical coordinate system; determine the far-field condition according to the size of the base station antenna under test and the test frequency band; determine the aerial flight path and test points of the test instrument carrier 11, so that the test instrument 14 can be tested at the test points, and the spherical coordinate radius L of the aerial flight path meets the far-field condition; receive the test data of the test instrument 14, and process the test data.

3D，3λ三者中的最大值，其中D为被测基站天线的尺寸，λ为测试频段的波长；当所述测试仪表14与被测基站天线的距离L>R时，认为满足远场条件。Furthermore, the far-field condition R is:

The maximum value among 3D and 3λ, where D is the size of the base station antenna under test and λ is the wavelength of the test frequency band; when the distance L>R between the test instrument 14 and the base station antenna under test, it is considered that the far field condition is met.

Furthermore, the ground control device 15 is specifically used to determine the test point position according to the following formula:

Wherein, P is the total power radiated by the antenna of the base station under test in the air, EIRP is the effective isotropic radiated power at any point in the air, (θ, φ) is the coordinate of the test point in the spherical coordinate system, θ has N values from 0 degrees to 180 degrees, and φ has M values from 0 degrees to 360 degrees.

The embodiment of the present invention further provides a Massive MIMO field test method, which is applied to the Massive MIMO field test system as described above, as shown in FIG3, and includes:

Step 201: using the test instrument carrier to carry the test instrument to perform testing in the air;

Step 202: Using the test instrument to complete the communication data test;

Step 203: Use the ground control device to control the movement of the test instrument carrier and process the test data obtained by the test instrument.

Furthermore, the Massive MIMO field test system further includes a positioning device and a distance and angle measurement device, and the method further includes:

Using the positioning device to obtain the position information of the test instrument;

Using the distance and angle measuring device to measure the distance and angle between the base station antenna under test and the test instrument;

The use of the ground control device to control the movement of the test instrument vehicle includes:

The ground control device is used to control the movement of the test instrument carrier according to the position information obtained by the positioning device and the measurement data obtained by the distance and angle measuring device.

In the present embodiment, a Massive MIMO field test system is provided, including a test instrument carrier 11, a positioning device 12, a distance measuring and angle measuring device 13, a test instrument 14, and a ground control device 15, which cooperate with each other to efficiently complete the Massive MIMO field test. After setting the flight route and test points of the test instrument carrier 11 during the entire test process, the test instrument carrier 11 can fly according to the set flight route, and the test instrument 14 automatically completes all tests and transmits the test data back to the ground control device 15 in real time. The ground control device 15 determines the accuracy and validity of the test data in real time, and finally obtains a Massive MIMO three-dimensional coverage map, which is much better than the test efficiency of manually carrying the test instrument 14 to the test site for testing. In the present embodiment, the entire test process is automatically completed, and the positioning device 12 and the distance measuring and angle measuring device 13 ensure the accuracy of the test instrument carrier 11 flight route and test points, avoiding the test errors caused by manual operation, thereby greatly improving the accuracy and objectivity of the test.

Furthermore, when performing the test, the method further includes:

The adjustable attenuator is used to simulate the channel insertion loss, so that the insertion loss of the indoor channel can be simulated to complete the indoor coverage evaluation.

Furthermore, when performing the test, the method further includes:

Using the ground control device to control the base station under test to transmit a fixed beam; or

The measured beam is fixed by utilizing the auxiliary terminal on the auxiliary vehicle to communicate uninterruptedly with the measured base station, so that the measured beam can be fixed for testing.

Furthermore, the use of the ground control device to control the movement of the test instrument carrier according to the position information obtained by the positioning device and the measurement data obtained by the distance and angle measuring device, and processing the test data obtained by the test instrument includes:

A spherical coordinate system is established according to the position information of the measured base station antenna obtained by the distance and angle measuring device, wherein the measured base station antenna is located at the center of the spherical coordinate system;

Determine the far-field condition according to the size of the base station antenna under test and the test frequency band;

Determine the aerial flight route and test points of the test instrument carrier so that the test instrument is tested at the test points, and the spherical coordinate radius L of the aerial flight route satisfies the far field condition;

The test data of the test instrument is received, and the test data is processed.

3D，3λ三者中的最大值，其中D为被测基站天线的尺寸，λ为测试频段的波长；当所述测试仪表与被测基站天线的距离L>R时，认为满足远场条件。Furthermore, the far-field condition R is:

The maximum value among 3D and 3λ, where D is the size of the base station antenna under test and λ is the wavelength of the test frequency band; when the distance L>R between the test instrument and the base station antenna under test, it is considered that the far field condition is met.

Furthermore, the determining of the aerial flight route and test points of the test instrument carrier includes:

The test point is determined according to the following formula:

Wherein, P is the total power radiated by the antenna of the base station under test in the air, EIRP is the effective isotropic radiated power at any point in the air, (θ, φ) is the coordinate of the test point in the spherical coordinate system, θ has N values from 0 degrees to 180 degrees, and φ has M values from 0 degrees to 360 degrees.

The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

The present invention proposes an automated, efficient and accurate Massive MIMO field test system, which mainly includes: a test drone (i.e. the test instrument carrier), a positioning device, a distance and angle measuring device, a test instrument, and a ground control device. The test drone is mainly used to carry the test instrument to complete the test in the air; the positioning device mainly completes the acquisition of the longitude and latitude and other position information of the test instrument; the distance and angle measuring device mainly completes the position of the antenna of the tested base station, the distance and angle between the drone and the antenna of the tested base station; the test instrument mainly completes the test of signal strength, cell information, beam (beam) information, etc.; further, the test system also includes an adjustable attenuator, which is mainly used for simulating channel insertion loss; the ground control device mainly completes the flight control of the drone and the acquisition and processing of test data (including position information, distance and angle data, signal strength, cell information, beam information, etc.) through the control channel and the data channel.

In actual work, the Massvie MIMO broadcast beam of the base station works in a scanning manner in the air, and the service beam changes in real time according to the terminal position, and the tested beam often needs to be fixed during the test process for testing. In this embodiment, there are two methods for fixing the tested beam: one is to control the base station to transmit a fixed beam through a ground control device, and the second method uses another one or more auxiliary drones, each drone carries an auxiliary terminal and fixes the tested beam by uninterrupted communication with the tested base station, and the one or more auxiliary drones and the test drone are controlled and coordinated by the ground control device.

As shown in FIG4 , the Massive MIMO field test method of this embodiment includes the following steps:

First, a spherical coordinate system is established as shown in Figure 5. The ground control device controls the test drone to take off, and in the air, the distance and angle measuring device with a camera device is used to determine the position, size and height of the base station antenna under test, and a related spherical coordinate system is established, in which the base station antenna under test is located at the center of the spherical coordinate system, and Phi is defined as along the Z axis.

The base station is controlled to transmit a fixed beam through a ground control device, or the beam is fixed by an auxiliary terminal carried by an auxiliary UAV which continuously communicates with the base station under test.

Secondly, establish the far-field conditions and test distance. Specifically, the far-field conditions are determined based on the antenna size of the base station being tested and the test frequency band, and the test distance L must meet the far-field conditions.

3D，3λ三者中的最大值，其中D为被测基站天线的尺寸，λ为测试频段的波长。当无人机携带的测试仪表与被测基站天线的距离L>R时，则认为满足远场条件。According to electromagnetic field theory, the far-field condition R is:

The maximum value among 3D and 3λ, where D is the size of the base station antenna under test and λ is the wavelength of the test frequency band. When the distance L>R between the test instrument carried by the drone and the base station antenna under test, the far-field condition is considered to be met.

The third step is to determine the test points according to the test accuracy and test time requirements. That is, determine the minimum interval between θ and φ, set the flight route of the drone, and perform the test according to the set test points. The test instrument transmits the test data back to the ground control device in real time.

Assuming that the total power radiated by the antenna of the base station under test in the air is P, and the effective isotropic radiated power at any point in the air is EIRP, the formula 1 is calculated based on the spherical coordinate integration:

In actual testing, the continuous spherical coordinates need to be discretized. Assuming that θ is divided into N intervals from 0 degrees to 180 degrees, and φ is divided into M intervals from 0 degrees to 360 degrees, we get Formula 2:

According to Formula 2, for example, if θ takes 3 degrees as the minimum interval, then N = 180/3 = 60, and if φ takes 6 degrees as the minimum interval, then M = 360/6 = 60. That is, the number of points tested by the drone in the air is 59*60 = 3540 points. FIG6 is a schematic diagram of the flight route and test points of the drone in the air according to an embodiment of the present invention.

During flight, the positioning device and the distance and angle measuring device are used to ensure that the flight path and test points remain accurate. The spherical coordinate radius L during flight must ensure that the far-field conditions are met, and the test data obtained by the test instrument is transmitted back to the ground control device in real time.

In the fourth step, the ground control device completes the test data processing and generates a three-dimensional coverage graph. The ground control device processes and judges the test data. If the evaluation of indoor coverage of a high-rise building is to be completed, the attenuation value of the preset adjustable attenuator can be used to simulate the insertion loss of the indoor channel to complete the indoor coverage evaluation.

In this embodiment, a Massive MIMO field test system is provided, including a test drone, a positioning device, a distance and angle measuring device, a test instrument, and a ground control device, which cooperate with each other to efficiently complete the Massive MIMO field test. The test drone is mainly used to carry the test instrument to complete the test in the air; the positioning device mainly completes the acquisition of location information such as longitude and latitude; the distance and angle measuring device mainly completes the position of the antenna of the base station under test, and the measurement of the distance and angle between the drone and the antenna of the base station under test; the test instrument mainly completes the test of signal strength, cell information, beam information, etc.; the adjustable attenuator is mainly used for simulating channel insertion loss; the ground control device mainly completes the flight control of the drone and the acquisition and processing of test data (including location information, distance and angle data, signal strength, cell information, beam information, etc.) through the control channel and the data channel. After setting the flight route and test points of the test drone during the entire test process, the test drone can fly according to the set flight route, and the test instrument automatically completes all tests and transmits the test data back to the ground control device in real time. The ground control device determines the accuracy and validity of the test data in real time, and finally obtains the Massive MIMO three-dimensional coverage map, which is much better than the test efficiency of manually carrying the test instrument to the test site for testing. In this embodiment, the entire test process is completed automatically, and the positioning device and the distance and angle measuring device ensure the accuracy of the test drone's flight route and test points, avoiding the test errors caused by manual operation, thereby greatly improving the accuracy and objectivity of the test.

An embodiment of the present invention further provides a Massive MIMO field test device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor; when the processor executes the program, the Massive MIMO field test method as described above is implemented.

An embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps in the Massive MIMO field test method described above are implemented.

Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims (11)

1. A Massive MIMO external field test system is characterized by comprising:

the test instrument carrying tool is used for carrying a test instrument to finish testing in the air;

the test instrument is used for completing the test of communication data;

the ground control device is used for controlling the motion of the test instrument carrier and processing the test data obtained by the test instrument;

the positioning device is used for acquiring the position information of the test instrument;

the distance and angle measuring device is used for measuring the distance and the angle between the antenna of the tested base station and the test instrument;

the ground control device is specifically used for controlling the motion of the test instrument carrier according to the position information obtained by the positioning device and the measurement data obtained by the distance and angle measuring device;

the ground control device is specifically used for establishing a spherical coordinate system according to the position information of the measured base station antenna obtained by the distance and angle measuring device, and the measured base station antenna is positioned at the central position of the spherical coordinate system; judging far field conditions according to the size of the antenna of the tested base station and the test frequency band; determining an air flight route and a test point position of the test instrument carrier so that the test instrument can test at the test point position, wherein the spherical coordinate radius L of the air flight route meets the far field condition; receiving test data of the test instrument and processing the test data;

the determining the air flight route and the test point location of the test instrument carrier comprises:

determining the test point location according to the following formula:

wherein, P is the total aerial radiation power of the base station antenna to be tested, EIRP is the effective omnidirectional radiation power of any point in the air, (theta, phi) is the coordinate of the test point in the spherical coordinate system, theta has N values from 0 degree to 180 degrees, and phi has M values from 0 degree to 360 degrees.

2. The Massive MIMO external field test system according to claim 1,

the test instrument carrier is an unmanned aerial vehicle.

3. The Massive MIMO external field test system of claim 1, wherein the test data comprises at least one of: signal strength, cell information, beam information.

4. The Massive MIMO external field test system according to claim 1,

the ground control device is also used for controlling the base station to be tested to emit fixed beams; or

And controlling the auxiliary terminal on the auxiliary vehicle to continuously communicate with the base station to be tested to fix the beam to be tested.

5. A Massive MIMO external field test method applied to the Massive MIMO external field test system of any one of claims 1-4, comprising:

carrying a test instrument by using the test instrument carrying tool to carry out a test in the air;

testing communication data by using the test instrument;

and controlling the motion of the test instrument carrier by using the ground control device, and processing the test data obtained by the test instrument.

6. The method for testing Massive MIMO external field according to claim 5, wherein the Massive MIMO external field testing system further comprises a positioning device and a distance and angle measuring device, the method further comprises:

acquiring the position information of the test instrument by using the positioning device;

measuring the distance and the angle between the antenna of the tested base station and the test instrument by using the distance and angle measuring device;

said controlling the motion of the test meter vehicle with the ground control device comprises:

and controlling the motion of the test instrument carrier by using the ground control device according to the position information obtained by the positioning device and the measurement data obtained by the distance and angle measuring device.

7. The Massive MIMO external field test method according to claim 5, wherein when performing the test, the method further comprises:

controlling the measured base station to transmit a fixed wave beam by using the ground control device; or

And fixing the measured beam by using the uninterrupted communication between the auxiliary terminal on the auxiliary vehicle and the measured base station.

8. The Massive MIMO external field test method according to claim 6, wherein the controlling the motion of the test instrument carrier by the ground control device according to the position information obtained by the positioning device and the measurement data obtained by the distance and angle measuring device comprises:

establishing a spherical coordinate system according to the position information of the measured base station antenna obtained by the distance and angle measuring device, wherein the measured base station antenna is positioned at the central position of the spherical coordinate system;

judging far field conditions according to the size of the antenna of the tested base station and the test frequency band;

and determining an air flight route and a test point of the test instrument carrier so that the test instrument can test at the test point, wherein the spherical coordinate radius L of the air flight route meets the far-field condition.

9. The Massive MIMO external field test method according to claim 8,

the far-field condition R is:

3D and 3 lambda, wherein D is the size of the antenna of the tested base station, and lambda is the wavelength of the test frequency band; when the distance L between the test instrument and the antenna of the tested base station>And R, the far-field condition is considered to be satisfied.

10. A Massive MIMO external field test device comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor; wherein the processor when executing the program implements the Massive MIMO external field testing method as claimed in any one of claims 5-9.

11. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the Massive MIMO external field testing method according to any one of claims 5 to 9.

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