Automatic air interface test system and channel radiation power and sensitivity rapid test method

Abstract

The present application belongs to the technical field of OTA test, and relates to an automatic air interface test system, which comprises a radio frequency shielding box, a radio frequency channel switching device and a comprehensive tester connected in sequence; the inner side wall of the radio frequency shielding box is provided with a USB interface, a radio frequency interface and a power supply interface; N probe antennas are placed in the radio frequency shielding box, and the probe antennas are connected with the radio frequency interface through radio frequency cables; a wireless terminal to be tested is placed at any position in the radio frequency shielding box; the wireless terminal to be tested, the radio frequency shielding box, the radio frequency channel switching device and the comprehensive tester are connected with an upper computer respectively; the probe antennas and the wireless terminal to be tested are connected through an air interface to realize bidirectional communication. A channel radiation power and sensitivity rapid air interface test method based on the same is also disclosed, and in the test, the placement position and orientation of the wireless terminal do not need to be changed, and only one arbitrary angle test is needed to obtain a relatively accurate test result.

Description

Technical Field

[0001] This invention belongs to the field of OTA testing technology, and specifically relates to an automatic air interface testing system and a rapid testing method for channel radiated power and sensitivity. Background Technology

[0002] Rapid and accurate testing of the radio frequency (RF) performance of wireless terminals is crucial in the R&D process and production line testing of wireless terminals. Traditional conducted testing separately tests the passive performance of the antenna and the active performance of the RF circuit, then adds them together to obtain the overall RF performance. This method does not require a microwave anechoic chamber, but it is affected by factors such as matching and antenna coupling noise interference, and cannot reflect the true performance of the wireless terminal. For wireless terminals with pre-reserved RF interfaces on the motherboard, the entire structure needs to be damaged to a certain extent to meet the cable connection requirements; for terminals without pre-reserved RF interfaces on the motherboard, a temporary RF interface needs to be soldered onto the motherboard, causing irreversible damage to the entire device. Over-the-Air (OTA) testing uses an over-the-air radiating connection in a microwave anechoic chamber to test the entire wireless terminal instead of a cable connection. It can evaluate the overall RF performance of the wireless terminal and has now become the standard testing method for mobile phones and other wireless terminal devices. International standards organizations such as CTIA and 3GPP specify standard test methods for Single Input Single Output (SISO) scenarios, including Total Radiated Power (TRP) and Total Isotropic Sensitivity (TIS). The standard TRP and TIS test methods divide the test grid in a spherical coordinate system with fixed angular intervals for θ and φ, respectively. The equivalent isotropic radiated power and equivalent isotropic sensitivity of the wireless terminal at these angles are measured and integrated to obtain the TRP and TIS values. While the standard test methods are intuitive and provide accurate results, the sequential testing at various angles on a spherical surface results in a long testing time. Furthermore, the multi-probe microwave anechoic chamber required for these tests is expensive, leading to high costs for wireless terminal R&D and production line testing. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic air interface testing system and a rapid testing method for channel radiated power and sensitivity. This method does not require cable connections and tests the radio frequency performance of wireless terminals in a non-destructive manner, solving the problems of long testing time and high cost of standard testing methods. It can quickly diagnose radio frequency problems existing in wireless terminals.

[0004] This invention is achieved through the following technical solution:

[0005] An automated air interface test system includes an RF shielded box, an RF channel switching device, and a comprehensive tester connected in sequence.

[0006] The inner wall of the RF shielding box is covered with absorbing material. A test platform is provided at the bottom of the RF shielding box. The inner side wall of the RF shielding box is equipped with a USB interface, an RF interface and a power interface.

[0007] N probe antennas are placed inside the RF shielding box. The probe antennas are connected to the RF interface via RF cables. The wireless terminal under test is placed anywhere inside the RF shielding box.

[0008] The wireless terminal under test, the RF shielding box, the RF channel switching device, and the integrated tester are respectively connected to the host computer.

[0009] The probe antenna and the wireless terminal under test achieve bidirectional communication through an air interface connection.

[0010] Furthermore, the RF channel switching equipment, integrated tester, and host computer achieve bidirectional communication via LAN port;

[0011] The wireless terminal under test connects to the host computer via a USB interface to achieve bidirectional communication;

[0012] The RF channel switching device and the integrated test are connected via an RF interface.

[0013] Furthermore, the outside of the RF shielding box is also connected to a production line conveyor belt and a robotic arm. The production line conveyor belt is used to realize the automated transportation of the wireless terminal under test, and the robotic arm is used to clamp the next wireless terminal under test and put it into the RF shielding box.

[0014] Radio frequency channel switching equipment uses a channel emulator or a multi-channel radio frequency switch.

[0015] This invention also discloses a rapid method for testing channel radiated power based on an automated air interface testing system, comprising the following steps:

[0016] Step 1: Place the wireless terminal under test inside the RF shielded box, connect and start the integrated tester;

[0017] Step 2: Configure the RF channel switching device to establish an RF link connection between probe antenna i and the integrated tester;

[0018] Step 3: Configure the transmission power, input external loss compensation value and output external loss compensation value of the integrated tester appropriately to establish a stable connection between the integrated tester and the wireless terminal with the matching test card inserted.

[0019] Step 4: Control the wireless terminal under test to transmit signals at maximum power throughout the entire test process. The host computer records the lower limit of the power range received by the wireless terminal under test at this time, denoted as RSRP_tmp1.

[0020] Step 5: Reduce the transmit power RS_EPRE of the integrated tester at preset intervals, and record the lower bound of the receive power range of the wireless terminal under test at this time, denoted as RSRP_tmp2;

[0021] Step 6: Compare RSRP_tmp1 and RSRP_tmp2. If they are equal, assign the value of RSRP_tmp2 to RSRP_tmp1. Repeat step 5 to obtain a new value for RSRP_tmp2.

[0022] If they are not equal, record the value of RSRP_tmp1 as the final received power value of the wireless terminal under test, RSRP_UE, and at the same time record the corresponding transmit power of the integrated tester, RS_EPRE.

[0023] Step 7: Control the integrated tester to measure the uplink transmit power of the wireless terminal under test, and record the measured uplink transmit power Tx Power value on the host computer at this time;

[0024] Step 8: The host computer calculates the actual transmit power of the wireless terminal under test;

[0025] Step 9: Control the RF channel switching device to establish RF links between the remaining N-1 probe antennas and the integrated test instrument. Repeat steps 3-8 to obtain the measured value of the radiated power of the wireless terminal under test when the remaining probe antennas are connected.

[0026] Step 10: Calculate the actual transmit power values ​​of the wireless terminal under test corresponding to the N probe antennas and perform equal weighted averaging to obtain the final measured value of the radiated power of the wireless terminal under test.

[0027] Furthermore, in step 8, the expression for calculating the actual transmit power of the wireless terminal under test is as follows:

[0028] UE Tx Power_i=Tx Power-RSRP_UE+RS_EPRE.

[0029] Furthermore, in step 10, the final calculation expression for the measured radiated power of the wireless terminal under test is as follows:

[0030]

[0031] This invention also discloses a rapid channel sensitivity testing method based on an automatic air interface testing system, comprising the following steps:

[0032] S1: Place the wireless terminal under test in the RF shielded box, connect and start the integrated tester;

[0033] S2: Configure the RF channel switching device to establish an RF link connection between probe antenna i and the integrated tester;

[0034] S3: Reasonably configure the transmission power, input external loss compensation value and output external loss compensation value of the integrated tester to establish a stable connection between the integrated tester and the wireless terminal with the matching test white card inserted.

[0035] S4: Control the wireless terminal under test to transmit signals at maximum power throughout the entire test process. The host computer records the lower limit of the power range received by the wireless terminal under test at this time, denoted as RSRP_tmp1.

[0036] S5: Reduce the transmit power RS_EPRE of the integrated tester at preset intervals, and record the lower bound of the receive power range of the wireless terminal under test at this time, denoted as RSRP_tmp2;

[0037] S6: Compare RSRP_tmp1 and RSRP_tmp2. If they are equal, assign the value of RSRP_tmp2 to RSRP_tmp1. Repeat S5.

[0038] If they are not equal, record the value of RSRP_tmp1 as the final received power value of the wireless terminal under test, RSRP_UE, and at the same time record the corresponding transmit power of the integrated tester, RS_EPRE1.

[0039] Subtracting RS_EPRE1 from RSRP_UE yields the path loss value corresponding to the probe antenna;

[0040] S7: Control the integrated tester to measure the downlink relative throughput of the wireless terminal under test. If the relative throughput is greater than the preset throughput, reduce the transmission power of the integrated tester at preset intervals until the relative throughput is less than the preset throughput. Record the transmission power RS_EPRE2 of the integrated tester at this time, and calculate the actual sensitivity of the wireless terminal under test under the antenna connection conditions of the probe.

[0041] S8: Control the RF channel switching device to establish an RF link between the remaining N-1 probe antennas and the integrated tester. Repeat S3-S7 to obtain the sensitivity measurement value of the wireless terminal under test when the remaining probe antennas are connected.

[0042] S9: Take the inverse of the linear values ​​of the calculated sensitivity measurements of the wireless terminal under test corresponding to the N probe antennas and average them equally to obtain the final sensitivity measurement value of the wireless terminal under test.

[0043] Furthermore, in S6, the expression for calculating the path loss value is:

[0044] Pathloss_i=RS_EPRE1-RSRP_UE.

[0045] Furthermore, in S7, the expression for calculating the actual sensitivity of the wireless terminal under test is:

[0046] UE Sensitivity_i=RS_EPRE2-Pathloss_i.

[0047] Furthermore, the final expression for calculating the sensitivity measurement value of the wireless terminal under test is as follows:

[0048]

[0049] In the formula, UE Sensitivity_i represents the actual sensitivity of the wireless terminal under test.

[0050] Compared with the prior art, the present invention has the following beneficial technical effects:

[0051] This invention discloses an automated air interface testing system that enables multiple independent automated tests by equipping it with multiple probe antennas and RF channel switching devices. The wireless terminal under test (DUT) connects to a host computer via a USB port, enabling automatic control of the DUT and facilitating a stable connection with the integrated test instrument, thus reducing call drop rates during testing. The tests are conducted within an RF shielded enclosure, which is smaller, less expensive, and more widely applicable than the multi-probe microwave anechoic chambers required by standard testing methods.

[0052] This invention discloses a rapid testing method for channel radiated power and a rapid testing method for channel sensitivity based on an automated air interface testing system. By compensating for path loss caused by air interface radiated connections, a wireless transmission line connection similar to a cable connection is achieved. Simultaneously, by reducing the variation in the reported range between the transmitter power RS_EPRE of the integrated tester and the received power RSRP of the wireless terminal, a more accurate air interface path loss is obtained, minimizing the impact of the wireless terminal's received power within a 1dB range on test accuracy. This enables accurate evaluation of the overall RF performance of the wireless terminal. The test does not require specifying the placement and orientation of the wireless terminal; a single test at any angle is sufficient to obtain relatively accurate results. Compared to the standard testing method, which requires testing 11×24=264 angles (taking a 15° sampling interval as an example), the testing time is significantly reduced. Weighted averaging of test results from multiple probe antennas reduces the impact of random errors on the test results, improving the accuracy of the test results.

[0053] The automatic air interface testing system and the rapid testing method for channel radiation power and sensitivity based on wireless transmission lines described in this invention are remotely controlled by a program, do not damage the overall structure, and require no manual intervention during the testing process. They can be used for wireless terminal R&D or product production line testing and problem diagnosis, achieving low-cost, rapid and accurate air interface testing, and have high commercial applicability. Attached Figure Description

[0054] Figure 1This is a schematic diagram of the test system structure in an embodiment of the present invention;

[0055] Figure 2 This is a schematic diagram of the internal structure of the shielding box in an embodiment of the present invention;

[0056] The components include: 1. RF shielding box; 2. Absorbing material; 3. Probe antenna; 4. Wireless terminal under test; 5. RF cable; 6. USB cable; 7. RF channel switching device; and 8. Integrated tester.

[0057] Figure 3 The results of the wireless transmission sensitivity test are shown, where the horizontal axis represents the received power (RSRP) value of the wireless terminal under test, and the vertical axis represents the relative throughput value at the corresponding received power. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the present invention clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention; that is, the described embodiments are only a part of the embodiments of the present invention, and not all of them.

[0059] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0060] like Figure 1 As shown, the present invention discloses an automatic air interface testing system, including a comprehensive tester 8, an RF shielding box 1, an RF channel switching device 7, and a host computer connected in sequence.

[0061] The radio frequency shielding box 1 has N test probe antennas 3 built inside, and the host computer is equipped with data acquisition and processing software.

[0062] like Figure 2 As shown, the integrated tester 8 and the RF channel switching device 7, as well as the RF channel switching device 7 and the probe antenna 3, are connected via RF cables 5. The probe antenna 3 and the wireless terminal under test (DUT) 4 are connected via an over-the-air (OTA) radiating connection. These connections form the uplink and downlink RF links between the DUT 4 and the integrated tester 8. The integrated tester 8 and the RF channel switching device 7 are connected to a host computer via a LAN port to enable automatic control of the aforementioned devices. The DUT 4 is connected to the host computer via a USB port to enable automatic control of the DUT 4, facilitating the automatic establishment of a stable connection with the integrated tester 8 during testing without manual intervention. This also ensures sufficient power for the DUT 4 during testing, preventing test interruptions due to insufficient power.

[0063] Preferably, the 8CMW500 integrated tester is selected to establish a communication connection with the wireless terminal.

[0064] Preferably, the RF channel switching device 7KSW02B is selected to realize the automatic switching of the RF link of the multi-probe antenna 3 and the loading of the channel model. The RF channel switching device 7 uses a channel simulator, which can realize a function similar to a multiplexer. However, the channel simulator is expensive. If the channel (actual transmission environment) test of the signal is not performed, a multiplex RF switch can be used instead.

[0065] More preferably, the outside of the RF shielding box 1 is also connected to a production line conveyor belt and a robotic arm. The production line conveyor belt is used to realize the automated transportation of the wireless terminal 4 under test, and the robotic arm is used to clamp the next wireless terminal 4 under test and put it into the RF shielding box 1.

[0066] Preferably, a customized RF shielding box 1 is selected, with the following main technical specifications: 1. It meets 85dB shielding performance in the range of 400MHz to 7.5GHz; 2. The interior is lined with polyurethane absorbing material 2 with a height of 50mm; 3. The shielding box is equipped with 6 SMA RF interfaces, 4 fiber optic couplers and a power socket.

[0067] Preferably, N=4 probe antennas 3 are used for testing. The probe antenna 3 is model TC-93060A, a left-hand circularly polarized antenna with an operating frequency range of 800MHz to 6GHz.

[0068] Preferably, a fiber optic to USB transmitter is used to connect the fiber optic coupler in the shielded box, and the corresponding USB interface is connected to the wireless terminal under test 4.

[0069] A schematic diagram of the internal structure of the RF shielding box 1 is shown below. Figure 2 As shown, the device includes an RF shielding box 1, with polyurethane absorbing material 2 on the inner wall of the RF shielding box 1. Inside the RF shielding box 1, there are four left-handed circularly polarized probe antennas 3. The wireless terminal under test 4 is placed in the center of the RF shielding box 1. The four left-handed circularly polarized probe antennas 3 are arranged in a circle around the wireless terminal under test 4. The inside of the RF shielding box 1 is provided with four RF interfaces. Each probe antenna 3 is connected to an RF interface through an RF cable 5. The wireless terminal under test 4 is connected to a USB interface converted from an optical fiber port through a USB connection cable 6.

[0070] The number of probe antennas can be selected based on factors such as the required testing accuracy and the size of the internal space of the shielding box.

[0071] A rapid testing method for channel radiated power and channel sensitivity based on wireless transmission lines for the aforementioned automatic air interface testing system.

[0072] The radiated power test includes the following steps:

[0073] Step 1: Place the wireless terminal under test 4 inside the RF shielding box 1, and connect and start the integrated tester 8 and the RF channel switching device 7.

[0074] Step 2: Configure the RF channel switching device 7 appropriately and control the RF channel switching device 7 to establish an RF link connection between the probe antenna 3 and the integrated tester 8.

[0075] Step 3: Configure the transmission power, input external loss compensation value, and output external loss compensation value of the integrated tester 8 appropriately to establish a stable connection between the integrated tester 8 and the wireless terminal with the matching test card inserted.

[0076] The integrated tester 8 is essentially a base station, and the test white card is like a SIM card in a mobile phone, used to establish a connection.

[0077] Step 4: Control the wireless terminal under test 4 to transmit signals at maximum power throughout the entire test process. The host computer records the lower limit of the power range received by the wireless terminal under test 4 at this time, denoted as RSRP_tmp1.

[0078] Step 5: Control the integrated tester 8 to reduce the transmission power of the integrated tester 8 at 0.1dB intervals, and record the lower limit of the received power range of the wireless terminal under test 4 at this time, denoted as RSRP_tmp2.

[0079] Step 6: Compare RSRP_tmp1 and RSRP_tmp2. If they are equal, assign the value of RSRP_tmp2 to RSRP_tmp1 and repeat step 5.

[0080] If they are not equal, record the value of RSRP_tmp1 as the final received power value of the wireless terminal under test 4, RSRP_UE, and at the same time record the corresponding transmit power of the integrated tester, RS_EPRE.

[0081] Step 7: Control the integrated tester 8 to measure the uplink transmission power of the wireless terminal under test 4, and record the measured uplink transmission power Tx Power value on the host computer.

[0082] Step 8: Calculate the actual transmit power of the wireless terminal under test 4 according to the expression. The expression for calculating the actual transmit power of the wireless terminal under test 4 is as follows:

[0083] UE Tx Power_1=Tx Power-RSRP_UE+RS_EPRE

[0084] Step 9: Control the RF channel switching device 7 to establish an RF link between the remaining 3 probe antennas 3 and the integrated tester 8. Repeat steps 3-8 to obtain the radiated power measurement values ​​UE TxPower_2, UE Tx Power_3, and UE Tx Power_4 of the wireless terminal under test 4 when the remaining probe antennas 3 are connected.

[0085] Step 10: Calculate the actual transmit power values ​​of the wireless terminal 4 corresponding to the four probe antennas 3 using equal weighting to obtain the final measured radiated power value of the wireless terminal 4.

[0086]

[0087] The sensitivity test includes the following steps:

[0088] Steps 1 through 5 are the same as the steps for radiated power testing.

[0089] Step 6: Compare RSRP_tmp1 and RSRP_tmp2. If they are equal, assign the value of RSRP_tmp2 to RSRP_tmp1 and repeat step 5.

[0090] If they are not equal, record the value of RSRP_tmp1 as the final received power value RSRP_UE of the wireless terminal under test 4, and at the same time record the corresponding transmit power RS_EPRE1 of the integrated test instrument 8.

[0091] Subtracting RS_EPRE from RSRP_UE yields the path loss value for probe antenna 3. The path loss calculation expression is:

[0092] Pathloss_1 = RS_EPRE1 - RSRP_UE

[0093] Step 7: Generally, the received power value at which the relative throughput drops to 95% is considered the sensitivity of the wireless terminal under test (UTD) 4. Control the integrated test instrument 8 to measure the downlink relative throughput of UTD 4. If the relative throughput is greater than 95%, control the integrated test instrument 8 to reduce its transmit power in 0.1 dB intervals until the relative throughput is less than 95%. Record the transmit power RS_EPRE2 of the integrated test instrument 8 at this point and calculate the sensitivity of UTD 4 under the corresponding probe connection conditions. The actual sensitivity calculation expression for UTD 4 is:

[0094] UE Sensitivity_1=RS_EPRE2-Pathloss_1

[0095] Step 8: Control the RF channel switching device 7 to establish an RF link between the remaining 3 probe antennas 3 and the integrated tester 8. Repeat steps 3-7 to obtain the sensitivity measurement values ​​of the wireless terminal under test 4, UESensitivity_2, UE Sensitivity_3, and UE Sensitivity_4, when the remaining probe antennas 3 are connected.

[0096] Step 9: Take the reciprocal of the linear values ​​of the calculated sensitivity measurements of the wireless terminal 4 corresponding to the four probe antennas 3 and average them equally to obtain the final sensitivity measurement value of the wireless terminal 4.

[0097]

[0098] Using a commercial Xiaomi 9 mobile phone as the wireless terminal under test (4), the radiated power test results using the above method are shown in the table below:

[0099]

[0100]

[0101] The phone under test was controlled to transmit at maximum power, and the final radiated power test result was 22.5dBm. Compared with the conducted test result of 22.8dBm, it can be seen that the above-mentioned radiated power test method based on wireless transmission line is accurate and reliable, and a test only takes less than one minute, which is highly efficient.

[0102] The sensitivity test results using the above method are as follows: Figure 3 As shown, the sensitivity values ​​obtained by the four probes are -117.0 dBm, -117.3 dBm, -116.0 dBm, and -115.4 dBm, respectively. After converting to linear values ​​and taking the reciprocal average, the final sensitivity value is -116.5 dBm, and the corresponding conducted power test result is -116.8 dBm. Considering that the received power value reported by the mobile phone is not an accurate value and has a certain non-linear relationship with the actual received power of the mobile phone, there may be some differences between the test results of the four probes. Therefore, the above results are within a reasonable error range. The proposed rapid testing method for channel radiated power and sensitivity based on wireless transmission lines is accurate and efficient. It can detect RF performance degradation caused by problems with the mobile phone's RF circuitry and antenna in a non-destructive manner during testing. It can be used for R&D verification of the overall RF performance of wireless terminals and for rapid production line testing and problem diagnosis.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A rapid testing method for channel radiated power based on an automated air interface testing system, characterized in that, The automatic air interface test system includes an RF shielding box (1), an RF channel switching device (7), and a comprehensive tester (8) connected in sequence. The inner wall of the radio frequency shielding box (1) is covered with absorbing material (2). The bottom of the radio frequency shielding box (1) is equipped with a test platform. The inner side wall of the radio frequency shielding box (1) is equipped with a USB interface, a radio frequency interface and a power interface. N probe antennas (3) are placed inside the RF shielding box (1). The probe antennas (3) are connected to the RF interface through RF cables (5). The wireless terminal (4) under test is placed at any position inside the RF shielding box (1). The wireless terminal under test (4), the radio frequency shielding box (1), the radio frequency channel switching device (7), and the integrated tester (8) are respectively connected to the host computer; The probe antenna (3) and the wireless terminal under test (4) achieve bidirectional communication through an air interface connection; The rapid test method for channel radiated power includes the following steps: Step 1: Place the wireless terminal under test (4) inside the radio frequency shielding box (1), connect and start the integrated tester (8). Step 2: Configure the RF channel switching device (7) to establish an RF link connection between the probe antenna (3) and the integrated tester (8); Step 3: Configure the transmission power, input external loss compensation value and output external loss compensation value of the integrated tester (8) in a reasonable way so that a stable connection is established between the integrated tester (8) and the wireless terminal with the matching test white card inserted. Step 4: Control the wireless terminal under test (4) to transmit signals at maximum power throughout the entire test process; the host computer records the lower limit of the power range received by the wireless terminal under test (4) at this time, denoted as . ; Step 5: Reduce the transmission power of the integrated tester (8) at preset intervals. Record the lower bound of the received power range of the wireless terminal under test (4) at this time, denoted as . ; Step 6: Comparison and If they are equal, then The value assigned to Repeat step 5 to obtain a new The value; If they are not equal, The value is recorded as the final received power value of the wireless terminal under test (4). Record this moment at the same time The corresponding integrated tester (8) transmits power. ; Step 7: Control the integrated tester (8) to measure the uplink transmission power of the wireless terminal under test (4), and record the measured uplink transmission power at this time on the host computer. value; Step 8: The host computer calculates the actual transmit power of the wireless terminal under test (4); the calculation expression is: ; Step 9: Control the RF channel switching device (7) to establish an RF link between the remaining N-1 probe antennas (3) and the integrated tester (8), repeat steps 3-8, and obtain the actual transmission power of the wireless terminal under test (4) when the remaining probe antennas (3) are connected; Step 10: The actual transmission power of the wireless terminal (4) under test corresponding to the calculated N probe antennas (3) is averaged equally to obtain the final measured value of the radiated power of the wireless terminal (4) under test.

2. The method for rapid testing of channel radiated power based on an automatic air interface testing system according to claim 1, characterized in that, In step 10, the final calculation expression for the radiated power measurement value of the wireless terminal under test (4) is: 。 3. The method for rapid testing of channel radiated power based on an automatic air interface testing system according to claim 1, characterized in that, The radio frequency channel switching device (7), the integrated tester (8), and the host computer communicate bidirectionally via the LAN port; The wireless terminal under test (4) is connected to the host computer via a USB interface to achieve bidirectional communication; The RF channel switching device (7) is connected to the integrated test via an RF interface.

4. The method for rapid testing of channel radiated power based on an automatic air interface testing system according to claim 1, characterized in that, The radio frequency shielding box (1) is also connected to a production line conveyor belt and a robotic arm. The production line conveyor belt is used to realize the automated transportation of the wireless terminal (4) under test, and the robotic arm is used to clamp the next wireless terminal (4) under test and put it into the radio frequency shielding box (1). The radio frequency channel switching device (7) adopts a channel simulator or a multi-channel radio frequency switch.

5. A rapid channel sensitivity testing method based on an automatic air interface testing system, characterized in that, The automatic air interface test system includes an RF shielding box (1), an RF channel switching device (7), and a comprehensive tester (8) connected in sequence. The inner wall of the radio frequency shielding box (1) is covered with absorbing material (2). The bottom of the radio frequency shielding box (1) is equipped with a test platform. The inner side wall of the radio frequency shielding box (1) is equipped with a USB interface, a radio frequency interface and a power interface. N probe antennas (3) are placed inside the RF shielding box (1). The probe antennas (3) are connected to the RF interface through RF cables (5). The wireless terminal (4) under test is placed at any position inside the RF shielding box (1). The wireless terminal under test (4), the radio frequency shielding box (1), the radio frequency channel switching device (7), and the integrated tester (8) are respectively connected to the host computer; The probe antenna (3) and the wireless terminal under test (4) achieve bidirectional communication through an air interface connection; The rapid channel sensitivity testing method includes the following steps: S1: Place the wireless terminal under test (4) inside the radio frequency shielding box (1), connect and start the integrated tester (8). S2: Configure the RF channel switching device (7) to establish an RF link connection between the probe antenna (3) and the integrated tester (8); S3: Reasonably configure the transmission power, input external loss compensation value and output external loss compensation value of the integrated tester (8) so that a stable connection is established between the integrated tester (8) and the wireless terminal with the matching test white card inserted. S4: Control the wireless terminal under test (4) to transmit signals at maximum power throughout the entire test process; the host computer records the lower limit of the power range received by the wireless terminal under test (4) at this time, denoted as S4. ; S5: Reduce the transmission power of the integrated tester (8) at preset intervals. Record the lower bound of the received power range of the wireless terminal under test (4) at this time, denoted as . ; S6: Comparison and If they are equal, then The value assigned to Repeat S5; If they are not equal, The value is recorded as the final received power value of the wireless terminal under test (4). Record this moment at the same time. The corresponding integrated tester (8) transmits power. ; The expression for calculating path loss is: ; S7: Control the integrated tester (8) to measure the downlink relative throughput of the wireless terminal under test (4). If the relative throughput is greater than the preset throughput, reduce the transmission power of the integrated tester (8) at preset intervals until the relative throughput is less than the preset throughput. Record the transmission power of the integrated tester (8) at this time. And calculate the actual sensitivity of the wireless terminal under test (4) under the connection conditions of the probe antenna (3); The expression for calculating the actual sensitivity of the wireless terminal under test (4) is as follows: ; S8: Control the RF channel switching device (7) to establish an RF link between the remaining N-1 probe antennas (3) and the integrated tester (8), repeat S3-S7, and obtain the sensitivity measurement value of the wireless terminal (4) under test when the remaining probe antennas (3) are connected; S9: Take the reciprocal of the linear values ​​of the calculated sensitivity measurements of the wireless terminal (4) corresponding to the N probe antennas (3) and average them equally to obtain the final sensitivity measurement value of the wireless terminal (4).

6. The rapid channel sensitivity testing method based on an automatic air interface testing system according to claim 5, characterized in that, The final expression for calculating the sensitivity measurement value of the wireless terminal under test (4) is as follows: ； In the formula, The actual sensitivity of the wireless terminal under test (4) is given.

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