Device and method for quantitatively measuring isolation between radio frequency signals

Abstract

The invention discloses a device and method for quantitatively measuring isolation between radio frequency signals, and the method comprises the steps: transmitting a first radio frequency signal of a first test point to a first power divider through a radio frequency test line, dividing the first radio frequency signal into two paths by the first power divider, transmitting one path of the first radio frequency signal to a first comprehensive tester, and transmitting the other path of the first radio frequency signal to a second comprehensive tester; the other path of the first radio frequency signal is transmitted to the adjustable attenuator; the first general-purpose tester measures the packet loss rate of the first radio frequency signal in real time, and dynamically adjusts the adjustable attenuator to control the packet loss rate measured by the first general-purpose tester to be below a first preset value or 0, and the attenuation amount of the adjustable attenuator is added with the attenuation values of the first power divider and the second power divider. And obtaining the specific isolation between the second radio frequency signal and the first radio frequency signal. According to the invention, the isolation degree of the 5G antenna and the 4G antenna can be quantitatively measured, so that the requirement of not influencing the performance of each other can be met, and the best isolation degree control requirement can be met.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a method, device, intelligent terminal and storage medium for quantitatively evaluating the connection isolation between radio frequency signals. Background Art

[0002] Compared with 4G mobile phones, 5G mobile phones have proposed a new concept: ENDC (EUTRA-NR Dual Connectivity Enhanced Data Terminal Connection). ENDC is a key technology in 5G networks, which allows 5G NR (new wireless) to work with 4G LTE (E-UTRA) networks to improve network performance and efficiency. Because in the ENDC state, 5G and 4G work at the same time, we need to pay attention to the isolation between them. If the isolation is too small, there will be interference between them, which will cause performance degradation. Because 5G mobile phones have more antennas, generally 6-10, and the distance between antennas is close, it is difficult to get a high isolation.

[0003] In conventional antenna debugging, there is no clear concept of what the isolation between 5G antennas and 4G antennas should be. Only a qualitative analysis can be done, that is, if the performance does not drop significantly in actual testing, the isolation is considered to be fine. However, there is no method in the existing technology that can quantitatively measure the isolation between 5G antennas and 4G antennas, and it is impossible to achieve the best isolation control requirements.

[0004] Therefore, the existing technology still needs to be improved and developed. Summary of the invention

[0005] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, a method, device, intelligent terminal and storage medium for quantitatively evaluating the connection isolation between radio frequency signals are provided. The present invention can quantitatively measure how much isolation the 5G antenna and the 4G antenna should have in order to achieve the requirement of not affecting each other's performance and achieve the best isolation control requirement, which provides convenience for users.

[0006] The technical solution adopted by the present invention to solve the problem is as follows:

[0007] A device for quantitatively measuring the isolation between radio frequency signals, comprising:

[0008] A mobile phone mainboard, on which a first test point capable of generating a first radio frequency signal and a second test point capable of generating a second radio frequency signal are arranged;

[0009] A first power divider is connected to a first test point of a mobile phone mainboard and is used to divide a first radio frequency signal generated by the first test point into two;

[0010] A second power divider is connected to a second test point of the mobile phone mainboard and is used to divide a second radio frequency signal generated by the second test point into two;

[0011] An adjustable attenuator, connected to the first power divider and the second power divider respectively, and used to adjust the strength of the radio frequency signal;

[0012] A first comprehensive tester connected to the first power divider, the first comprehensive tester being used to measure the packet loss rate of the first radio frequency signal in real time;

[0013] A second comprehensive tester, connected to the second power divider, and used for measuring the packet loss rate of the second radio frequency signal in real time;

[0014] The second RF signal of the second test point is transmitted to the second power divider through the RF test line, and the second RF signal is divided into two paths through the second power divider, one path of the second RF signal is transmitted to the second comprehensive tester, and the other path of the second RF signal is transmitted to the adjustable attenuator; the first RF signal of the first test point is transmitted to the first power divider through the RF test line, and the first RF signal is divided into two paths through the first power divider, one path of the first RF signal is transmitted to the first comprehensive tester, and the other path of the first RF signal is transmitted to the adjustable attenuator;

[0015] Measuring the packet loss rate of the second radio frequency signal in real time by the second comprehensive tester, and dynamically adjusting the adjustable attenuator to control the packet loss rate measured by the second comprehensive tester to be less than a first predetermined value or 0;

[0016] The packet loss rate of the first RF signal is measured in real time by the first integrated tester, and the adjustable attenuator is dynamically adjusted to control the packet loss rate measured by the first integrated tester to be below a first predetermined value or to be 0. The attenuation of the adjustable attenuator is added to the attenuation values ​​of the first power divider and the second power divider themselves to obtain the specific isolation between the second RF signal and the first RF signal.

[0017] The device for quantitatively measuring the isolation between radio frequency signals, wherein the first radio frequency signal is a 4G radio frequency signal, and the first test point is a 4G test point;

[0018] The second radio frequency signal is a 5G radio frequency signal, and the second test point is a 5G test point.

[0019] The device for quantitatively measuring the isolation between radio frequency signals, wherein the first comprehensive tester is a 4G comprehensive tester; the 4G comprehensive tester is connected to the first power divider, and the 4G comprehensive tester is used to measure the 4G packet loss rate in real time.

[0020] The device for quantitatively measuring the isolation between radio frequency signals, wherein the second comprehensive tester is a 5G comprehensive tester;

[0021] The 5G comprehensive tester is connected to the second power divider, and the 5G comprehensive tester is used to measure the 5G packet loss rate in real time;

[0022] The 5G RF signal of the 5G test point is transmitted to the second power divider through the RF test line, and the 5G RF signal is divided into two paths through the second power divider, one 5G RF signal is transmitted to the 5G integrated tester, and the other 5G RF signal is transmitted to the adjustable attenuator; the 4G RF signal of the 4G test point is transmitted to the first power divider through the RF test line, and the 4G RF signal is divided into two paths through the first power divider, one 4G RF signal is transmitted to the 4G integrated tester, and the other 4G RF signal is transmitted to the adjustable attenuator.

[0023] The device for quantitatively measuring the isolation between radio frequency signals, wherein the 5G packet loss rate is measured in real time by the 5G integrated tester, and the adjustable attenuator is dynamically adjusted to control the packet loss rate measured by the 5G integrated tester to be below a first predetermined value or to be 0.

[0024] The device for quantitatively measuring the isolation between radio frequency signals, wherein the packet loss rate of 4G is measured in real time by the 4G comprehensive tester, and the adjustable attenuator is dynamically adjusted to control the packet loss rate measured by the 4G comprehensive tester to be below a first predetermined value or to be 0. The attenuation of the adjustable attenuator is added to the attenuation values ​​of the first power divider and the second power divider themselves to obtain the specific isolation between the 5G radio frequency signal and the 4G radio frequency signal.

[0025] The device for quantitatively measuring the isolation between radio frequency signals, wherein the first radio frequency signal is a 4G radio frequency signal, and the first test point is a 4G test point; the second radio frequency signal is a WIF radio frequency signal, and the second test point is a WIFI test point;

[0026] Correspondingly, the first comprehensive tester is a 4G comprehensive tester, and the second comprehensive tester is a WIFI comprehensive tester;

[0027] Or the first radio frequency signal is a 5G radio frequency signal, and the first test point is a 5G test point; the second radio frequency signal is a WIF radio frequency signal, and the second test point is a WIFI test point;

[0028] Correspondingly, the first comprehensive tester is a 5G comprehensive tester, and the second comprehensive tester is a WIFI comprehensive tester;

[0029] Or the first radio frequency signal is a GPS radio frequency signal, and the first test point is a GPS test point; the second radio frequency signal is a WIF radio frequency signal, and the second test point is a WIFI test point;

[0030] Correspondingly, the first comprehensive tester is a GPS comprehensive tester, and the second comprehensive tester is a WIFI comprehensive tester.

[0031] A quantitative isolation measurement method for a device for quantitatively measuring the isolation between radio frequency signals as described in any one of the above items, comprising the following steps:

[0032] When measuring, the adjustable attenuator is adjusted to the minimum value state in the initial state control. At this time, the second RF signal is sent through the second test point of the mobile phone mainboard, passes through the second power divider, the adjustable attenuator, and the first power divider, and is input to the first test point, causing interference to the first RF signal. At this time, the first comprehensive tester measures and reads that the packet loss rate of the first RF signal is not 0;

[0033] The attenuation of the adjustable attenuator is controlled to be gradually increased until the packet loss rate of the first radio frequency signal measured and read by the first comprehensive tester is reduced to 0 again, or reduced to below the first predetermined value; at this time, the attenuation of the adjustable attenuator is added to the attenuation values ​​of the second power divider and the first power divider themselves to obtain the specific isolation between the second radio frequency signal and the first radio frequency signal.

[0034] The isolation quantitative measurement method further comprises:

[0035] When measuring, the adjustable attenuator is adjusted to the minimum value in the initial state. At this time, the 5G frequency signal is sent through the 5G test point of the mobile phone motherboard, passes through the second power divider, the adjustable attenuator, and the first power divider, and is input to the 4G test point, causing interference to the 4G RF signal. At this time, the 4G comprehensive tester measures that the packet loss rate of the 4G RF signal is not 0;

[0036] The attenuation of the adjustable attenuator is controlled to be gradually increased until the packet loss rate of the 4G radio frequency signal measured and read by the 4G integrated tester is reduced to 0 again, or reduced to below the first predetermined value; at this time, the attenuation of the adjustable attenuator is added to the attenuation values ​​of the second power divider and the first power divider themselves to obtain the specific isolation between the 5G radio frequency signal and the 4G radio frequency signal.

[0037] In the quantitative isolation measurement method, the first predetermined value is a packet loss rate of 5%.

[0038] Beneficial effects of the present invention: The present invention provides a method, device, intelligent terminal and storage medium for quantitatively evaluating the connection isolation between various radio frequency signals. The present invention tests how much isolation should be achieved between the radio frequency test ports of the 5G and 4G boards so as not to affect their respective sensitivities, and then requires the antenna to be debugged according to the measured isolation. Compared with the prior art, the advantages of the present invention are: by testing the isolation requirement value of the board end, and then quantitatively using it as the isolation requirement of the antenna, the problem of only being qualitative but not quantitative can be avoided; the present invention can quantitatively measure how much isolation the 5G antenna and the 4G antenna should have in order to achieve the requirement of not affecting each other's performance, and achieve the best isolation control requirement, which provides convenience for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 It is a schematic diagram of the principle structure of a device for quantitatively evaluating the connection isolation between radio frequency signals provided in Example 1 of the present invention.

[0041] Figure 2 It is a schematic diagram of the principle structure of a device for quantitatively evaluating the connection isolation between radio frequency signals provided in Example 2 of the present invention.

[0042] Figure 3 It is a flow chart of a method for quantitatively evaluating the connection isolation between radio frequency signals provided by a specific application embodiment of the present invention.

[0043] Illustration Description:

[0044] 101: mobile phone motherboard;

[0045] 102: first power divider;

[0046] 103: second power divider;

[0047] 104: adjustable attenuator;

[0048] 105: 5G comprehensive tester;

[0049] 106: 4G comprehensive tester; DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0051] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] 5G ENDC isolation refers to the ability to isolate signals or interference between two different networks in the evolution of 5G to LTE (Long Term Evolution) network architecture, especially in the "Enhanced Data Terminal Connection" (E-UTRA NR Dual Connectivity, ENDC) model.

[0053] In 5G ENDC (Enhanced Data Terminal Connection), User Equipment (UE) can be connected to 4G LTE (fourth generation mobile communication) and 5G NR (New Radio) networks at the same time to achieve higher transmission rates and better network performance. In this connection mode, it is very important to ensure that the signals between LTE and NR are isolated from each other to prevent interference and ensure communication quality.

[0054] Isolation usually involves the following aspects:

[0055] Spectrum isolation: Ensure that the frequency bands used by LTE and 5G NR do not interfere with each other, or that the interference level is kept within an acceptable range.

[0056] Power Control: Through appropriate power control, the signal strength transmitted from one technology (such as LTE) to another technology (such as NR) is limited to reduce interference.

[0057] Physical isolation: In network design, measures are implemented at the physical level to ensure that the signals of two networks overlap as little as possible during propagation.

[0058] Protocol control: Design corresponding mechanisms at the network protocol level to manage and coordinate the communication between LTE and NR to improve isolation.

[0059] Network architecture: Through the design of the network architecture, ensure that the signal paths of different technologies are as independent as possible.

[0060] Good isolation is crucial to improving user experience, reducing bit error rate and improving overall network performance. When planning and optimizing a network, isolation evaluation and testing are very necessary steps. The isolation in the embodiment of the present invention is about power control isolation.

[0061] In conventional antenna debugging, there is no clear concept of what the isolation between 5G antennas and 4G antennas should be. Only a qualitative analysis can be done, that is, if the performance does not drop significantly in actual testing, the isolation is considered to be fine. However, there is no method in the existing technology that can quantitatively measure the isolation between 5G antennas and 4G antennas, and it is impossible to achieve the best isolation control requirements.

[0062] That is, the conventional method of evaluating antenna isolation in the prior art is to rely on empirical values ​​and actual measurements to see the effect. For example, the empirical value is generally 10dB for isolation, and the actual measured performance is OK. This belongs to qualitative analysis and cannot be quantitatively analyzed. Quantitative analysis means finding a way to measure the specific isolation required to meet the requirements. The present invention measures the isolation requirements by proposing a specific and achievable test method.

[0063] In order to solve the above technical problems, the embodiments of the present invention provide a method for quantitatively evaluating the connection isolation between each RF signal. The present invention can quantitatively measure how much isolation the 5G antenna and the 4G antenna should have in order to meet the requirement of not affecting each other's performance. The present invention tests how much isolation should be achieved between the RF test ports on the 5G and 4G boards so as not to affect their respective sensitivities, and then requires the antenna to be debugged according to the measured isolation. Compared with the prior art, the advantage of the present invention is that it uses the isolation requirement value of the test board end as the isolation requirement for the antenna quantitatively, avoiding the problem of qualitative but not quantitative.

[0064] like Figure 1 As shown, a device for quantitatively measuring the isolation between radio frequency signals provided by Embodiment 1 of the present invention includes:

[0065] A mobile phone mainboard 101, on which a first test point 11 capable of generating a first radio frequency signal and a second test point 12 capable of generating a second radio frequency signal are arranged;

[0066] A first power divider 102 is connected to the first test point 11 of the mobile phone mainboard 101 and is used to divide the first radio frequency signal generated by the first test point 11 into two;

[0067] The second power divider 103 is connected to the second test point 12 of the mobile phone mainboard 101 and is used to divide the second radio frequency signal generated by the second test point 12 into two;

[0068] The adjustable attenuator 104 is connected to the first power divider 102 and the second power divider 103 respectively, and is used to adjust the strength of the radio frequency signal; in the embodiment of the present invention, preferably, the adjustable attenuator 104 is an adjustable radio frequency signal attenuator, specifically an attenuator for radio frequency (RF) signals;

[0069] A first comprehensive tester 16, connected to the first power divider 102, and the first comprehensive tester 16 is used to measure the packet loss rate of the first radio frequency signal in real time;

[0070] A second comprehensive tester 15, connected to the second power divider 103, and the second comprehensive tester 15 is used to measure the packet loss rate of the second radio frequency signal in real time;

[0071] The second RF signal of the second test point 12 is transmitted to the second power divider 103 through the RF test line, and the second RF signal is divided into two paths through the second power divider 103, one path of the second RF signal is transmitted to the second comprehensive tester 15, and the other path of the second RF signal is transmitted to the adjustable attenuator 104; the first RF signal of the first test point 11 is transmitted to the first power divider 102 through the RF test line, and the first RF signal is divided into two paths through the first power divider 102, one path of the first RF signal is transmitted to the first comprehensive tester 16, and the other path of the first RF signal is transmitted to the adjustable attenuator 104;

[0072] The packet loss rate of the second radio frequency signal is measured in real time by the second comprehensive tester 15, and the adjustable attenuator 104 is dynamically adjusted to control the packet loss rate measured by the second comprehensive tester 15 to be less than a first predetermined value or to be 0;

[0073] The packet loss rate of the first RF signal is measured in real time by the first integrated tester 16, and the adjustable attenuator 104 is dynamically adjusted to control the packet loss rate measured by the first integrated tester 16 to be below a first predetermined value or to be 0. The attenuation of the adjustable attenuator 104 is added to the attenuation values ​​of the first power divider 102 and the second power divider 103 themselves to obtain the specific isolation between the second RF signal and the first RF signal.

[0074] In the embodiment of the present invention, the main purpose is to ensure that the isolation between two different radio frequency signals (the second radio frequency signal and the first radio frequency signal) reaches a predetermined standard through real-time monitoring and adjustment of the device.

[0075] Specifically, regarding the second RF signal of the second test point: it is transmitted to the second power divider through the RF test line, and the second power divider divides the RF signal into two: one is transmitted to the second integrated tester for monitoring, and the other is transmitted to the adjustable attenuator for subsequent processing.

[0076] Regarding the first RF signal of the first test point: Similarly, it is transmitted to the first power divider through the RF test line and divided into two paths: one path is monitored by the first integrated tester, and the other path is sent to the adjustable attenuator.

[0077] Regarding the monitoring of the packet loss rate in the embodiment of the present invention: each radio frequency signal will have its packet loss rate measured in real time by its own comprehensive tester. The packet loss rate is an important indicator for measuring signal integrity. If the packet loss rate exceeds the first predetermined value, it will affect the stability of the signal.

[0078] Specifically, the present invention dynamically adjusts the radio frequency signal through an adjustable attenuator to control the packet loss rate and ensure that it is lower than a predetermined value or remains at zero.

[0079] In the embodiment of the present invention, once the packet loss rate meets the requirement through the tester, the attenuation of the adjustable attenuator can be added to the attenuation values ​​of the first power divider and the second power divider to obtain the specific isolation between the two RF signals. This is an important basis for understanding and ensuring the signal coexistence performance.

[0080] For example, in an actual RF test scenario, the packet loss rate of the first RF signal is monitored to be 5%, while the packet loss rate of the second RF signal is monitored to be 7%. The first predetermined value set by the system is 3%. In this case, the packet loss rates both exceed the set value, and the adjustable attenuator will be dynamically adjusted, such as reducing the signal strength to increase the isolation.

[0081] After adjustment, the packet loss rate of the first integrated tester dropped to 2%, and the packet loss rate of the second integrated tester dropped to 1%. Through this process, the output value of the adjustable attenuator is finally obtained to be 8dB, the attenuation of the first power divider is 3dB, and the attenuation of the second power divider is 2dB. Then, the isolation between the two RF signals will be calculated as:

[0082] Isolation = 8dB + 3dB + 2dB = 13dB;

[0083] Through such experiments, it can be ensured that there is good isolation performance between 5G and 4G signals in actual operation, thereby preventing mutual interference and providing more stable communication services for end users.

[0084] The advantages of the present invention are: the real-time monitoring and adjustment process ensures signal quality, reduces packet loss rate, and improves communication stability. By dynamically adjusting the adjustable attenuator, the system can be optimized according to real-time data to adapt to different working environments and conditions. And by calculating the final isolation, clear technical indicators and data support can be provided for subsequent system design and debugging to ensure the feasibility of the system.

[0085] In the embodiment of the present invention, the first radio frequency signal may be a 4G radio frequency signal, and the first test point is a 4G test point; the second radio frequency signal may be a WIF radio frequency signal, and the second test point is a WIFI test point; correspondingly, the first integrated tester is a 4G integrated tester, and the second integrated tester is a WIFI integrated tester;

[0086] In another embodiment of the present invention, the first radio frequency signal may be a 5G radio frequency signal, and the first test point is a 5G test point; the second radio frequency signal is a WIF radio frequency signal, and the second test point is a WIFI test point; correspondingly, the first integrated tester is a 5G integrated tester, and the second integrated tester is a WIFI integrated tester;

[0087] In another embodiment of the present invention, the first radio frequency signal is a GPS radio frequency signal, and the first test point is a GPS test point; the second radio frequency signal is a WIF radio frequency signal, and the second test point is a WIFI test point; correspondingly, the first integrated tester is a GPS integrated tester, and the second integrated tester is a WIFI integrated tester.

[0088] like Figure 2 As shown, Embodiment 2 of the present invention provides a device for quantitatively measuring the isolation between radio frequency signals, including:

[0089] A mobile phone mainboard 101, on which a 4G test point capable of generating a 4G radio frequency signal and a 5G test point capable of generating a 5G radio frequency signal are provided;

[0090] The first power divider 102 is connected to the 4G test point of the mobile phone motherboard and can divide the radio frequency signal into two, for example, divide the 4G radio frequency signal into two;

[0091] The second power divider 103 is connected to the 5G test point of the mobile phone motherboard and can divide the radio frequency signal into two, for example, divide the 5G radio frequency signal into two;

[0092] An adjustable attenuator 104, connected to the first power divider 102 and the second power divider 103 respectively, for adjusting the strength of a radio frequency (RF) signal;

[0093] A 5G comprehensive tester 105, connected to the second power divider 103, the 5G comprehensive tester is used to measure the 5G packet loss rate in real time;

[0094] A 4G comprehensive tester 106, connected to the first power divider 102, the 4G comprehensive tester is used to measure the 4G packet loss rate in real time;

[0095] In the embodiment of the present invention, Figure 1As shown, when the mobile phone works in ENDC mode (5G mode), 5G and 4G work simultaneously, and the 5G RF signal of the 5G test point is transmitted to the second power divider 103 through the RF test line, and then divided into two paths, one path is transmitted to the 5G integrated tester 105, and the other path is transmitted to the adjustable attenuator 104; the 4G RF signal of the 4G test point is transmitted to the first power divider through the RF test line, and the 4G RF signal is divided into two paths through the first power divider, one path is connected to the 4G integrated tester 106, and the other path is connected to the adjustable attenuator 104.

[0096] The 5G comprehensive tester can measure the packet loss rate of 5G in real time. Under normal circumstances, the packet loss rate should be 0%. The 4G comprehensive tester can measure the packet loss rate of 4G in real time. Under normal circumstances, the packet loss rate should be 0%.

[0097] Among them, EN-DC (E-UTRA NR Dual Connectivity) is a connection mode in the 5G network architecture.

[0098] Through Figure 1 After the connection, during the specific measurement, the adjustable attenuator 104 is adjusted to the minimum state in the initial state. At this time, the 5G signal is sent through the 5G test point of the mobile phone motherboard 101, passes through the second power divider 103, the adjustable attenuator 104, and the first power divider 102, and is input to the 4G test point, causing interference to 4G. At this time, the 4G comprehensive tester 106 reads that the packet loss rate of 4G is not 0. Then slowly increase the attenuation of the adjustable attenuator 104 until the packet loss rate of 4G is reduced to 0 again, or reduced to an acceptable range (such as a packet loss rate of less than 5%). At this time, the attenuation of the adjustable attenuator 104 plus the attenuation values ​​of the second power divider 103 and the first power divider 102 can be used to obtain the specific isolation required between the 5G RF signal and the 4G RF signal.

[0099] In the embodiment of the present invention, the adjustable attenuator 104 is a device for adjusting the signal strength, and the transmitted signal strength can be controlled by adjusting its attenuation. The present invention mentions "the attenuation of the adjustable attenuator 104 plus the attenuation values ​​of the second power divider 103 and the first power divider 102", which is actually calculating an overall signal attenuation effect to determine the required isolation between the 5G and 4G radio frequency signals.

[0100] In wireless communications, the coexistence of 5G and 4G radio frequency signals is an important issue. In order to ensure the normal operation of the network in the embodiment of the present invention, the two signals need to work under a certain degree of isolation to prevent mutual interference. The two power dividers mentioned here are the first power divider 102 and the second power divider 103. These two devices themselves will introduce a certain attenuation, that is, the signal will be weakened when passing through these devices. Therefore, when calculating the overall isolation of the system in the embodiment of the present invention, it is necessary to add the attenuation of the adjustable attenuator 104 to the attenuation of the two power dividers to obtain the final signal strength, so that the isolation between 5G and 4G can be set and optimized.

[0101] For example, in a wireless signal application scenario, the attenuation of the adjustable attenuator of the 5G signal is 12dB, the attenuation value of the first power divider 102 is 3dB, and the attenuation value of the second power divider 103 is 2dB. Then, the overall attenuation can be calculated as follows:

[0102] Total attenuation = adjustable attenuator + attenuation value of the first power divider + attenuation value of the second power divider;

[0103] Total attenuation = 12dB + 3dB + 2dB = 17dB;

[0104] Through this calculation, the present invention can determine that the isolation requirement between 5G and 4G is 17dB. The setting of this indicator helps to ensure that in actual operation, the signals of the two networks can coexist stably without interference, thereby improving user experience and the reliability of network services.

[0105] The benefits of the embodiments of the present invention are: 1) It can reduce interference: By accurately adjusting the attenuation, the interference between 5G and 4G signals can be effectively reduced to ensure signal quality. 2) It can improve network performance: Good isolation can improve the overall performance of the network, so that users can enjoy stable signals when using different networks. 3) It has better flexibility: The use of the adjustable attenuator in the embodiments of the present invention provides flexibility for system design, which can be dynamically adjusted according to the actual environment and needs.

[0106] Antenna isolation is a physical quantity used to measure the degree of signal mutual coupling between two antennas. It is usually expressed in decibels (dB). A higher isolation means less mutual interference between antennas and a more stable and reliable system performance.

[0107] Exemplary Methods

[0108] Based on the above embodiments, Figure 3 As shown, the embodiment of the present invention also provides a Figure 1 and Figure 2The isolation quantitative measurement method of the device for quantitatively measuring the isolation between radio frequency signals shown comprises the following steps:

[0109] S100, when measuring, in the initial state, the adjustable attenuator is controlled to be adjusted to the minimum state. At this time, the second RF signal is sent through the second test point of the mobile phone mainboard, passes through the second power divider, the adjustable attenuator, and the first power divider, and is input to the first test point, causing interference to the first RF signal. At this time, the first comprehensive tester measures and reads that the packet loss rate of the first RF signal is not 0;

[0110] S200, controlling to gradually increase the attenuation of the adjustable attenuator until the packet loss rate of the first RF signal measured and read by the first comprehensive tester is reduced to 0 again, or reduced to below the first predetermined value; at this time, the attenuation of the adjustable attenuator is added to the attenuation values ​​of the second power divider and the first power divider themselves to obtain the specific isolation between the second RF signal and the first RF signal.

[0111] In the embodiment of the present invention, the isolation between two radio frequency signals (the second radio frequency signal and the first radio frequency signal) is optimized by adjusting the adjustable attenuator. This process is intended to ensure signal stability and prevent interference problems during program operation.

[0112] Specifically, before measuring, the present invention first sets the attenuation of the adjustable attenuator to the minimum value. At this time, the second RF signal is sent through the second test point of the mobile phone motherboard, and the signal then enters through the second power divider. The next signal path is: second power divider → adjustable attenuator → first power divider → first test point. Since the signal is not attenuated, the strong signal will interfere with the first RF signal. It is monitored by the first comprehensive tester that the packet loss rate of the first RF signal is not zero, which indicates that there is adverse interference between the signals.

[0113] Then gradually adjust (S200): Next, the present invention gradually increases the attenuation of the adjustable attenuator to reduce the interference of the second RF signal on the first RF signal. This process will continue until the packet loss rate of the first RF signal measured by the first comprehensive tester drops to zero or below a predetermined value.

[0114] Once the packet loss rate reaches the requirement, the attenuation of the adjustable attenuator is added to the attenuation values ​​of the first power divider and the second power divider to obtain the specific isolation between the second RF signal and the first RF signal. This isolation is a key indicator for verifying the effectiveness of the system.

[0115] For example, in a wireless communication test environment, in the initial state, the packet loss rate reading of the first RF signal passing through the first comprehensive tester is 10%. The minimum value of the adjustable attenuator may be 0 dB, because the signal strength is the largest at this time, resulting in mutual interference.

[0116] Initial situation (S100): the packet loss rate is 10%, and the adjustable attenuator is set to 0 dB.

[0117] Adjustment process (S200): gradually increase the attenuation of the adjustable attenuator, for example, adjust it to 5dB, at which time the packet loss rate of the first RF signal is measured to be 5%. After further adjustment to 10dB, the packet loss rate may drop to 1%. Finally, adjust it to 15dB, and the packet loss rate of the first RF signal is successfully reduced to 0%.

[0118] By setting the adjustable attenuator, the signal is effectively controlled, so that the interference between the two RF signals is minimized. At this time, the isolation calculation can be performed, for example:

[0119] Isolation = 15dB + attenuation value of the first power divider + attenuation value of the second power divider;

[0120] This series of debugging and measurements provides favorable data support, ensures the smooth operation of different RF signals, and lays the foundation for the subsequent system stability and optimization.

[0121] The embodiments of the present invention have the following advantages:

[0122] 1) It can effectively reduce interference: By dynamically adjusting the adjustable attenuator, it can effectively reduce mutual interference between signals and ensure that each signal in the system can be transmitted in the best state.

[0123] 2) Performance can be further optimized: The real-time monitoring and adjustment process improves the performance of the entire system and provides users with a more stable communication experience.

[0124] 3) Isolation can be quantified: By calculating the specific isolation, it can provide solid data support for the design, debugging and actual work of subsequent equipment, thereby enhancing the reliability of the system.

[0125] Specifically: when measuring, the adjustable attenuator is adjusted to the minimum value in the initial state. At this time, the 5G frequency signal is sent through the 5G test point of the mobile phone motherboard, passes through the second power divider, the adjustable attenuator, and the first power divider, and is input to the 4G test point, causing interference to the 4G radio frequency signal. At this time, the 4G comprehensive tester measures that the packet loss rate of the 4G radio frequency signal is not 0;

[0126] The attenuation of the adjustable attenuator is gradually increased by controlling the attenuation of the adjustable attenuator until the packet loss rate of the 4G radio frequency signal measured by the 4G comprehensive tester is reduced to 0 again, or reduced to below the first predetermined value; at this time, the attenuation of the adjustable attenuator is added to the attenuation values ​​of the second power divider and the first power divider to obtain the specific isolation between the 5G radio frequency signal and the 4G radio frequency signal. In the embodiment of the present invention, the first predetermined value is a packet loss rate of 5%.

[0127] In this specific embodiment, it is described in detail how to optimize the isolation between the 5G frequency signal and the 4G frequency signal by adjusting the adjustable attenuator to ensure effective signal transmission, reduce interference and improve communication performance.

[0128] In this specific embodiment, before testing, the setting of the adjustable attenuator is adjusted to the minimum value, and the 5G frequency signal is sent through the 5G test point of the mobile phone motherboard. The signal passes through the following path: second power divider → adjustable attenuator → first power divider → 4G test point.

[0129] Since the 5G signal is very strong, it may interfere with the 4G signal. Therefore, during this process, the packet loss rate measured by the 4G comprehensive tester is not zero, indicating that there is signal loss.

[0130] Adjustment process: In order to suppress interference to the 4G signal, the present invention begins to gradually increase the attenuation of the adjustable attenuator. This process will continue until the 4G signal packet loss rate measured by the 4G comprehensive tester drops to zero or is lower than a preset value (eg, 5%).

[0131] Once the packet loss rate meets the requirement, the present invention calculates the attenuation of the adjustable attenuator at this time, and adds it to the attenuation values ​​of the first power divider and the second power divider, so as to obtain the specific isolation between the 5G signal and the 4G signal.

[0132] For example, in an experimental environment where 5G and 4G coexist:

[0133] Initial situation: The initial setting of the adjustable attenuator is 0dB. Through testing, it is found that the packet loss rate measured by the 4G comprehensive tester is 10%. This shows that the 5G frequency signal has obvious interference with the 4G signal.

[0134] Then adjust step by step: Start to gradually increase the attenuation of the adjustable attenuator. For example, when it is set to 5dB, the 4G packet loss rate is reduced to 7%. When it is increased to 10dB, the packet loss rate drops to 4%, but it is still higher than the preset value. Finally, it is set to 15dB, and the packet loss rate is successfully reduced to 2% (lower than 5%), meeting the system's operating requirements.

[0135] Then perform the isolation calculation: At this point, the isolation calculation can be performed, assuming that the attenuation of the second power divider and the first power divider are 3dB and 2dB respectively. The final isolation will be calculated as:

[0136] Isolation = 15dB + 3dB + 2dB = 20dB;

[0137] It can be seen that this series of measures in the present invention ensures that the impact of 5G signals on 4G signals is minimized, allowing the two radio frequency signals to coexist, improving the reliability of communication and the user experience. Through dynamic adjustment and strict monitoring, the development team can more accurately control and optimize the wireless communication environment.

[0138] The present invention adjusts the signal interference, effectively improving the transmission quality of 4G signals and ensuring that users will not be disturbed when using 4G services. After the dynamic adjustment optimization is implemented, the system can remain within the specified performance boundary without affecting the overall user experience due to packet loss caused by excessive signal strength. In addition, determining the specific isolation provides important data support for subsequent system design, which helps to evaluate and improve the performance of the equipment in actual work.

[0139] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A device for quantitatively measuring the isolation between radio frequency signals, characterized in that: include: A mobile phone mainboard, on which a first test point capable of generating a first radio frequency signal and a second test point capable of generating a second radio frequency signal are arranged; A first power divider is connected to a first test point of a mobile phone mainboard and is used to divide a first radio frequency signal generated by the first test point into two; A second power divider is connected to a second test point of the mobile phone mainboard and is used to divide a second radio frequency signal generated by the second test point into two; An adjustable attenuator, connected to the first power divider and the second power divider respectively, and used to adjust the strength of the radio frequency signal; A first comprehensive tester connected to the first power divider, the first comprehensive tester being used to measure the packet loss rate of the first radio frequency signal in real time; A second comprehensive tester, connected to the second power divider, and used for measuring the packet loss rate of the second radio frequency signal in real time; The second RF signal of the second test point is transmitted to the second power divider through the RF test line, and the second RF signal is divided into two paths through the second power divider, one path of the second RF signal is transmitted to the second comprehensive tester, and the other path of the second RF signal is transmitted to the adjustable attenuator; the first RF signal of the first test point is transmitted to the first power divider through the RF test line, and the first RF signal is divided into two paths through the first power divider, one path of the first RF signal is transmitted to the first comprehensive tester, and the other path of the first RF signal is transmitted to the adjustable attenuator; Measuring the packet loss rate of the second radio frequency signal in real time by the second comprehensive tester, and dynamically adjusting the adjustable attenuator to control the packet loss rate measured by the second comprehensive tester to be less than a first predetermined value or 0; The packet loss rate of the first RF signal is measured in real time by the first integrated tester, and the adjustable attenuator is dynamically adjusted to control the packet loss rate measured by the first integrated tester to be below a first predetermined value or to be 0. The attenuation of the adjustable attenuator is added to the attenuation values ​​of the first power divider and the second power divider themselves to obtain the specific isolation between the second RF signal and the first RF signal.

2. The device for quantitatively measuring the isolation between radio frequency signals according to claim 1, characterized in that: The first radio frequency signal is a 4G radio frequency signal, and the first test point is a 4G test point; The second radio frequency signal is a 5G radio frequency signal, and the second test point is a 5G test point.

3. The device for quantitatively measuring the isolation between radio frequency signals according to claim 2, characterized in that: The first comprehensive tester is a 4G comprehensive tester; the 4G comprehensive tester is connected to the first power divider, and the 4G comprehensive tester is used to measure the 4G packet loss rate in real time.

4. The device for quantitatively measuring the isolation between radio frequency signals according to claim 3, characterized in that: The second comprehensive tester is a 5G comprehensive tester; The 5G comprehensive tester is connected to the second power divider, and the 5G comprehensive tester is used to measure the 5G packet loss rate in real time; The 5G RF signal of the 5G test point is transmitted to the second power divider through the RF test line, and the 5G RF signal is divided into two paths through the second power divider, one 5G RF signal is transmitted to the 5G integrated tester, and the other 5G RF signal is transmitted to the adjustable attenuator; the 4G RF signal of the 4G test point is transmitted to the first power divider through the RF test line, and the 4G RF signal is divided into two paths through the first power divider, one 4G RF signal is transmitted to the 4G integrated tester, and the other 4G RF signal is transmitted to the adjustable attenuator.

5. The device for quantitatively measuring the isolation between radio frequency signals according to claim 4, characterized in that: The 5G packet loss rate is measured in real time by the 5G integrated tester, and the adjustable attenuator is dynamically adjusted to control the packet loss rate measured by the 5G integrated tester to be below a first predetermined value or to be 0.

6. The device for quantitatively measuring the isolation between radio frequency signals according to claim 4, characterized in that: The 4G packet loss rate is measured in real time by the 4G comprehensive tester, and when the adjustable attenuator is dynamically adjusted to control the packet loss rate measured by the 4G comprehensive tester to be below a first predetermined value or to be 0, the attenuation of the adjustable attenuator is added to the attenuation values ​​of the first power divider and the second power divider themselves, so as to obtain the specific isolation between the 5G RF signal and the 4G RF signal.

7. The device for quantitatively measuring the isolation between radio frequency signals according to claim 1, characterized in that: The first radio frequency signal is a 4G radio frequency signal, and the first test point is a 4G test point; the second radio frequency signal is a WIF radio frequency signal, and the second test point is a WIFI test point; Correspondingly, the first comprehensive tester is a 4G comprehensive tester, and the second comprehensive tester is a WIFI comprehensive tester; Or the first radio frequency signal is a 5G radio frequency signal, and the first test point is a 5G test point; the second radio frequency signal is a WIF radio frequency signal, and the second test point is a WIFI test point; Correspondingly, the first comprehensive tester is a 5G comprehensive tester, and the second comprehensive tester is a WIFI comprehensive tester; Or the first radio frequency signal is a GPS radio frequency signal, and the first test point is a GPS test point; the second radio frequency signal is a WIF radio frequency signal, and the second test point is a WIFI test point; Correspondingly, the first comprehensive tester is a GPS comprehensive tester, and the second comprehensive tester is a WIFI comprehensive tester.

8. A quantitative isolation measurement method for the device for quantitatively measuring the isolation between radio frequency signals according to any one of claims 1 to 7, characterized in that: The following steps are involved: When measuring, the adjustable attenuator is adjusted to the minimum value state in the initial state control. At this time, the second RF signal is sent through the second test point of the mobile phone mainboard, passes through the second power divider, the adjustable attenuator, and the first power divider, and is input to the first test point, causing interference to the first RF signal. At this time, the first comprehensive tester measures and reads that the packet loss rate of the first RF signal is not 0; The attenuation of the adjustable attenuator is controlled to be gradually increased until the packet loss rate of the first radio frequency signal measured and read by the first comprehensive tester is reduced to 0 again, or reduced to below the first predetermined value; at this time, the attenuation of the adjustable attenuator is added to the attenuation values ​​of the second power divider and the first power divider themselves to obtain the specific isolation between the second radio frequency signal and the first radio frequency signal.

9. The isolation quantitative measurement method according to claim 8, characterized in that: It also includes: When measuring, the adjustable attenuator is adjusted to the minimum value in the initial state. At this time, the 5G frequency signal is sent through the 5G test point of the mobile phone motherboard, passes through the second power divider, the adjustable attenuator, and the first power divider, and is input to the 4G test point, causing interference to the 4G RF signal. At this time, the 4G comprehensive tester measures that the packet loss rate of the 4G RF signal is not 0; The attenuation of the adjustable attenuator is controlled to be gradually increased until the packet loss rate of the 4G radio frequency signal measured and read by the 4G integrated tester is reduced to 0 again, or reduced to below the first predetermined value; at this time, the attenuation of the adjustable attenuator is added to the attenuation values ​​of the second power divider and the first power divider themselves to obtain the specific isolation between the 5G radio frequency signal and the 4G radio frequency signal.

10. The isolation quantitative measurement method according to claim 9, characterized in that: The first predetermined value is a packet loss rate of 5%.

Images