CN113708852A

CN113708852A - Antenna in-situ detection method and device

Info

Publication number: CN113708852A
Application number: CN202010435597.8A
Authority: CN
Inventors: 马士民; 韩方茂; 奈春英; 沈云峰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-11-26
Anticipated expiration: 2040-05-21
Also published as: CN113708852B

Abstract

The application discloses an antenna in-place detection method and device, relates to the field of communication, can obviously improve the accuracy of antenna in-place detection, and can be universally used in communication equipment with different antennas. The specific scheme is as follows: acquiring radio frequency parameters on a radio frequency link, wherein the radio frequency parameters comprise at least one of the following parameters: error Vector Magnitude (EVM), number of correlation peaks. And determining whether the antenna is in place or not according to the radio frequency parameters.

Description

Antenna in-situ detection method and device

Technical Field

The present application relates to the field of communications, and in particular, to an in-place detection method and apparatus for an antenna.

Background

Generally, the device performs a relevant test on the antenna when the device leaves the factory, so as to ensure that the antenna is in a normal working state. However, after a period of use, the antenna may be accidentally broken, buckled or loosened to cause the electrical connection failure of the antenna in the corresponding device, and thus the wireless communication is blocked. The failure of the electrical connection of the antenna in the corresponding device is called the antenna out-of-position (not in position).

Because the antenna is mostly packaged in the antenna shell or inside the device, it cannot be intuitively and quickly determined whether the antenna is in place. Then, if the wireless communication is blocked because the antenna is not in place, it is not possible to quickly screen whether the antenna is in place, and it is not possible to quickly resume the wireless communication.

Disclosure of Invention

The application provides an in-place detection method and device of an antenna, which can obviously improve the accuracy of in-place detection of the antenna and can be generally used in communication equipment with different antennas.

In order to achieve the purpose, the technical scheme is as follows:

in a first aspect, an in-place detection method for an antenna is provided, and is applied to a communication device, where the communication device is provided with an antenna and a radio frequency link corresponding to the antenna, and the method includes: acquiring radio frequency parameters on the radio frequency link, wherein the radio frequency parameters comprise at least one of the following parameters: error Vector Magnitude (EVM), and correlation peak number. And determining whether the antenna is in place according to the radio frequency parameters.

Based on the scheme, the communication device can determine whether the antenna is in place by acquiring the radio frequency parameters on the radio frequency link corresponding to the antenna. Because the radio frequency parameters on the radio frequency link, such as EVM and/or the number of correlation peaks, are less influenced by other factors, whether the antenna is in place can be determined more accurately.

In some implementation manners, multiple radio frequency parameters can be comprehensively considered to determine whether the antenna is in place, so that the accuracy of judgment is further improved. For example, an antenna is considered not in place only if the EVM and the number of correlation peaks both indicate that the current antenna is not present. If one of the radio frequency parameters does not indicate that the antenna is not in place, or all of the radio frequency parameters do not indicate that the antenna is not in place, the antenna is considered to be in place.

In one possible design, the determining whether the antenna is in place based on the rf parameter includes: and when the radio frequency parameter is larger than the corresponding threshold value, determining that the antenna is not in place. Based on the scheme, a scheme according to how to judge that the antenna is not in place according to the radio frequency parameters is provided. For example, if the EVM is greater than the corresponding threshold, it indicates that the signal on the rf link is not transmitted normally, and therefore can be used to indicate that the antenna is not in place. For another example, if the number of correlation peaks is greater than the corresponding threshold, it indicates that the signal on the rf link is mostly reflected from the antenna port, and therefore can be used to indicate that the antenna is not in place.

In one possible design, the radio frequency parameters include the EVM and the number of correlation peaks. Determining whether the antenna is in place according to the rf parameters includes: and when the EVM and the number of the correlation peaks are both larger than corresponding thresholds, determining that the antenna is not in place. Based on the scheme, the judgment accuracy of the scheme is further improved. It can be understood that, although any one of the EVM and the number of correlation peaks can be used to determine that the antenna is not in place, when both of the radio frequency parameters indicate that the antenna is not in place, the probability that the antenna is not in place is greater, thereby improving the accuracy of the determination that the antenna is not in place.

In one possible design, the threshold corresponding to the EVM is determined according to the EVM on the radio frequency link corresponding to the antenna when the communication device is operating normally. The threshold corresponding to the number of the correlation peaks is determined according to the number of the correlation peaks on the radio frequency link corresponding to the antenna when the communication device works normally. Based on the scheme, the method for acquiring the EVM corresponding threshold is provided. For example, the EVM corresponding to the radio frequency link when the communication device normally operates (e.g., first power-on start) may be used as the threshold corresponding to the EVM. It should be noted that, in other implementations, a certain value (for example, 10%) may also be floated on the basis of the EVM in which the communication device normally operates, as a threshold corresponding to the EVM, so that only when the EVM on the link during detection is higher than 10% of the EVM during normal operation, it is determined that the antenna is not in position, which can further increase the accuracy of detecting that the antenna is not in position.

In one possible design, before the obtaining the radio frequency parameters on the radio frequency link, the method further includes: and receiving an inquiry command, wherein the inquiry command is used for indicating whether the antenna is inquired to be in place or not. Based on the scheme, a triggering mechanism for the communication equipment to perform in-place detection of the antenna is provided. Based on the trigger mechanism, the in-place detection is carried out only when the query command is received, so that the number of in-place detection times can be effectively reduced, and the detection quality is improved. Of course, in some implementation scenarios, the communication device may automatically perform in-place detection every time a preset time duration elapses, so as to implement self-detection of the communication device and ensure normal operation of communication.

In one possible design, upon determining that the antenna is not in place, the method further includes: an alert indication is transmitted indicating that the antenna is not in place. Based on this scheme, a scheme of behavior of the communication device when the antenna is not in place is given. Therefore, the communication equipment can report the out-of-place alarm so as to transmit the information that the antenna is out of place, and the problem can be solved quickly.

In a second aspect, an in-place detection apparatus for an antenna is provided, which is applied to a communication device, where the communication device is provided with an antenna and a radio frequency link corresponding to the antenna, and the apparatus includes: the device comprises an obtaining unit and a determining unit, wherein the obtaining unit is used for obtaining radio frequency parameters on the radio frequency link, and the radio frequency parameters comprise at least one of the following parameters: error Vector Magnitude (EVM), and correlation peak number. The determining unit is used for determining whether the antenna is in place or not according to the radio frequency parameter.

In a possible design, the determining unit is configured to determine that the antenna is not in place when the rf parameter is greater than a corresponding threshold.

In a possible design, the rf parameters include the EVM and the number of correlation peaks, and the determining unit is configured to determine that the antenna is not in place when both the EVM and the number of correlation peaks are greater than corresponding thresholds.

In one possible design, the threshold corresponding to the EVM is determined according to the EVM on the radio frequency link corresponding to the antenna when the communication device is operating normally. The threshold corresponding to the number of the correlation peaks is determined according to the number of the correlation peaks on the radio frequency link corresponding to the antenna when the communication device works normally.

In one possible design, the apparatus further includes: a receiving unit, configured to receive an inquiry command, where the inquiry command is used to indicate whether the antenna is inquired to be in place.

In one possible design, the apparatus further includes: a transmitting unit, configured to transmit an alarm indication when it is determined that the antenna is not in place, where the alarm indication indicates that the antenna is not in place.

In a third aspect, there is provided a communication device that may include the in-place monitoring apparatus of the antenna according to any one of the second aspect and possible designs thereof.

In a fourth aspect, a computer-readable storage medium is provided, which comprises computer instructions that, when executed, perform the method for in-place detection of an antenna according to any one of the first aspect and its possible designs.

In a fifth aspect, a chip system is provided that includes processing circuitry, an interface, and a storage medium. The processing circuit is configured to invoke and run a computer program stored in a storage medium to execute the in-place detection method of the antenna according to any one of the first aspect and possible designs thereof.

In a sixth aspect, the present application provides a computer program product for causing a computer to perform the method for in-place detection of an antenna according to any one of the first aspect and its possible designs when the computer program product is run on the computer.

In a seventh aspect, a communication device is provided that includes an antenna, a coupler, and a processor. In some implementations, the couplers are disposed on the radio frequency links corresponding to the antennas, and the antennas correspond to the couplers one to one. The processor and the coupler may be configured to perform the method for detecting an antenna in place according to any one of the first aspect and possible designs thereof, and perform in-place detection on an antenna corresponding to a radio frequency link where the coupler is located.

It should be understood that the apparatus for detecting an antenna in place provided in the second aspect, the communication device provided in the third aspect, the computer-readable storage medium provided in the fourth aspect, the chip system provided in the fifth aspect, the computer program product provided in the sixth aspect, and the communication device provided in the seventh aspect may all be used to perform the method for detecting an antenna in place provided in the first aspect and various possible designs of the first aspect, and therefore, the beneficial effects achieved by the method are similar and will not be described herein again.

Drawings

FIG. 1 is a schematic diagram of in-situ detection of an antenna;

fig. 2 is a schematic diagram of logic connection of in-place detection of an antenna provided in the present application;

fig. 3 is a schematic diagram illustrating a communication device according to the present application;

fig. 4 is a schematic flowchart of an in-place antenna detection method provided in the present application;

fig. 5 is a schematic flowchart of another in-situ antenna detection method provided in the present application;

FIG. 6 is a schematic diagram illustrating the components of an in-situ detection apparatus provided in the present application;

fig. 7 is a schematic composition diagram of a chip system provided in the present application.

Detailed Description

In a communication apparatus, a Radio Frequency (RF) chain may be provided, each radio frequency chain corresponding to one antenna, which is composed of one or more radio frequency devices for signal transmission and radio frequency connection lines between the devices. In the communication process, the problems of wireless communication blockage, such as low strength of a certain radio frequency link receiving and transmitting signals, or incapability of reaching a theoretical estimated value of an actual rate, and the like, can occur. In order to locate the cause of these problems, it is necessary to confirm whether the antenna is in place.

Currently, whether the antenna is in place or not can be determined by a level detection method. For example, referring to fig. 1, the detection of the presence of an antenna 101 provided in a communication device is taken as an example. As shown in fig. 1, in the communication device, the processor 102 may be connected to the antenna port 103 of the antenna 101 through a detection line. Processor 102 may determine whether the antenna is in place by detecting a level characteristic (e.g., high or low) of the reflected signal on the detection line. It should be appreciated that when the communication device is powered up, a dc signal is present on the detection line. For the antenna 101 with the grounding structure in the body as shown in fig. 1, the dc signal on the detection line will return to the ground through the antenna 101, so the reflected signal from the antenna port 103 to the processor 102 through the detection line is small, i.e. has a low level. Processor 102 may thus determine that antenna 101 is in place based on the reflected signal having the lower level. Correspondingly, when the level of the reflected signal is higher, it indicates that the dc signal on the detection line does not return to the ground through the antenna 101, and the processor 102 may determine that the antenna 101 is not in place accordingly. In the present application, an antenna having a grounding structure as described above is referred to as an antenna having a dc short circuit characteristic. For example, the antenna having the dc short circuit characteristic may include a Loop (Loop) antenna, an IFA antenna, and the like. However, for an antenna without dc short circuit characteristics, such as a monopole (monopole) antenna, since the dc signal cannot return to the ground through the antenna 101, even if the antenna 101 is in place, the processor 102 receives a reflected signal with a higher level, and cannot determine whether the antenna 101 is in place through the level characteristics (such as high level or low level) of the reflected signal.

Since the antenna design in the communication device is very flexible, and the form of the antenna in different communication devices is different, it cannot be guaranteed that the antennas in all communication devices have the dc short circuit characteristic, so the above method for determining whether the antenna is in place through level detection cannot be generally applied.

In order to solve the above problems, the present application provides an in-place detection method for an antenna, which determines whether an antenna to be detected is in place by detecting and judging a radio frequency parameter of a radio frequency link corresponding to the antenna to be detected. By the scheme, the accuracy of antenna in-place detection can be remarkably improved, and meanwhile, the form of the antenna is not required, so that the antenna can be generally used in communication equipment with different antennas.

The technical solution provided by the present application is described in detail below with reference to the accompanying drawings.

Please refer to fig. 2, which is a schematic diagram of a logic connection for in-situ detection of an antenna according to the present application. Through the logical connection, the in-place detection method provided by the application can be realized. As shown in fig. 2, the logical connection may include a processing module, a feedback module, and an antenna.

The processing module may be a component having a processing function in the communication device. For example, the processing module is a Central Processing Unit (CPU), or a device having a processing function, such as a baseband chip (baseband chip) or a System On Chip (SOC) including a processor, a channel encoder, a digital signal processor, a modem, an interface module, and corresponding circuits.

The feedback module may be a component having signal transmission as well as feedback functions. It should be noted that, in the current communication device, a power control related component is generally provided for detecting and controlling the rf link power. For example, in order to implement the above functions, a Front End Module (FEM) integrating one or more Power Amplifiers (PA) and switches (switch), a coupler (coupler) for signal transmission and feedback, and the like may be disposed on a radio frequency link of the communication device. Wherein the coupler may be used to transmit a signal from the radio frequency front end to the antenna port so that the antenna radiates in accordance with the signal. The coupler can also be used for feeding back a feedback signal reflected from the antenna port to the SOC, so that the SOC knows the working condition of the radio frequency link according to the feedback signal. In this example, the functionality of the feedback module may be implemented by a coupler provided in the communication device. Of course, in other examples, the feedback module may be implemented by other devices meeting the above functional requirements. This is not limited by the present application.

The feedback module may be coupled to an antenna at a back end thereof. So that the feedback module can transmit a signal to the antenna and/or detect information related to the antenna. In this example, one feedback module may be disposed on one radio frequency link corresponding to one antenna, and correspondingly, when there are multiple antennas, the feedback module may be disposed on the radio frequency link corresponding to each antenna, respectively, to implement the corresponding function. Of course, in other implementations, when one feedback module can process the feedback signals of multiple antennas at the same time, one feedback module may be coupled to multiple antennas at the same time.

For example, when performing in-place detection on an antenna, the processing module may be configured to detect, according to the feedback module, acquired radio frequency parameters of one or more radio frequency links corresponding to the antenna, and be used to determine whether the antenna is in place. The specific determination method thereof will be described in detail in the following description.

It will be appreciated that the logical connections shown in fig. 2 may be provided in the communication device in order to enable in-place detection of the antenna in the communication device. For example, please refer to fig. 3, which is a schematic diagram illustrating a communication device according to the present application. The communication device may be provided with a logical connection for in-place detection of the antenna as shown in fig. 2. It should be noted that, in order to ensure the communication performance of the communication device, multiple antennas may be set to operate synchronously/asynchronously, so that a logical connection as shown in fig. 2 may be set in the communication device for each antenna that needs to perform bit detection. In fig. 3, for example, 4 antennas, such as antenna 1, antenna 2, antenna 3, and antenna 4, are provided in the communication device, the processing module is SOC, and each antenna corresponds to a feedback module (such as a coupler). It should be noted that, as described above, since the coupler and the SOC for performing the in-place detection on the antenna are all components that are usually provided in the communication device, the logic connection for performing the in-place detection on the antenna as shown in fig. 2 is provided in the communication device without introducing an additional component, so that the sharing of the existing devices is realized, and the utilization rate of the existing devices is improved.

The in-place detection method of the antenna provided by the application can be applied to the environments shown in fig. 2 and fig. 3. The method is applied to the communication device shown in fig. 3 as an example, and the presence detection method will be described in detail below.

Please refer to fig. 4, which is a flowchart illustrating an in-situ antenna detection method according to the present application. As shown in fig. 4, the method may include S401-S402.

S401, obtaining radio frequency parameters on a radio frequency link corresponding to an antenna.

S402, determining whether the antenna is in place or not according to the radio frequency parameters.

When the communication equipment detects the antennas in place, the SOC can acquire feedback signals on the corresponding radio frequency links through the couplers on the radio frequency links corresponding to the antennas, and accordingly, the radio frequency parameters of the corresponding radio frequency links are determined.

For example, referring to fig. 3, when performing in-place detection on the antenna 1, the SOC may obtain the feedback signal 1 on the radio frequency link corresponding to the antenna 1 through the coupler 1, and obtain the radio frequency parameter on the corresponding radio frequency link according to the feedback signal 1. When the antenna 2 is detected in place, the SOC may obtain the feedback signal 2 on the radio frequency link corresponding to the antenna 2 through the coupler 2, and obtain the radio frequency parameter on the corresponding radio frequency link according to the feedback signal 2. When the antenna 3 is detected in place, the SOC may obtain the feedback signal 3 on the radio frequency link corresponding to the antenna 3 through the coupler 3, and obtain the radio frequency parameter on the corresponding radio frequency link according to the feedback signal 3. When the antenna 4 is detected in place, the SOC may obtain the feedback signal 4 on the radio frequency link corresponding to the antenna 4 through the coupler 4, and obtain the radio frequency parameter on the corresponding radio frequency link according to the feedback signal 4.

In different implementations of the present application, the radio frequency parameters of the radio frequency link may be different. In some examples, the radio frequency parameter of the radio frequency link may include one of an Error Vector Magnitude (EVM), or a number of correlation peaks. In other examples, the rf parameters of the rf link may include both the EVM and the number of correlation peaks. In other examples, the rf parameters used to determine whether the antenna is in place may also include other parameters, such as transmit/feedback power ratio. The radio frequency parameters and their principles of use referred to in this application are exemplified below.

The EVM is an important parameter (i.e., radio frequency parameter) in the radio frequency domain, and can characterize signal transmission conditions on a corresponding radio frequency link. For example, when the output signal of the SOC is properly transmitted over the radio frequency link, the corresponding EVM is small. Conversely, when the output signal of the SOC is not correctly transmitted in the rf link, the corresponding EVM is larger. In the application, the EVM can be used as a basis for judging whether the antenna is in place. It will be appreciated that when the antenna is not in place, the signal on the corresponding rf link cannot be properly transmitted and thus the corresponding EVM will increase. The SOC may determine from this that the antenna is not in place.

As an example, the SOC may determine whether the antenna is in place according to a size relationship between the EVM on the link and a threshold corresponding to the EVM (e.g., referred to as an EVM threshold) during in-place detection. And when the EVM on the link is larger than the EVM threshold value, the EVM of the current link is considered to be too high, and the antenna is not in place. Otherwise, when the EVM on the link is smaller than the EVM threshold, the EVM of the current link is considered to be normal, and the antenna is in place.

The EVM threshold value can be obtained through various ways. For example, in some examples, the SOC may detect the feedback signal to obtain the EVM on the corresponding link and record the EVM as the EVM threshold when the communication device is operating normally (e.g., when the communication device is initially powered up). It should be noted that, in some implementations, when acquiring the EVM on the link in normal operation, in order to make the determination that the antenna is not in place more accurate, a certain value may float on the basis of the EVM as an EVM threshold, so that when the EVM acquired in detection is greater than the EVM threshold, the value actually exceeds the normal value more, and thus the antenna can be ensured to be in a state of not in place. In other examples, the EVM threshold may be preset in the SOC or set by the user. This is not limited by the present application.

In addition, the number of correlation peaks is also a parameter in the radio frequency domain. The number of correlation peaks can be used to characterize the magnitude of the difference between the transmitted signal and the received feedback signal of the SOC. For example, the larger the difference between the transmission signal and the feedback signal is, the smaller the number of correlation peaks is, and conversely, the smaller the difference between the transmission signal and the feedback signal is, the larger the number of correlation peaks is. The preset time may be a unit time, such as 1 Time Unit (TU), 2TU or other values. Wherein, TU is a duration specified in a Wireless Local Area Network (WLAN) standard, and is 1024 microseconds. The signals transmitted over the radio frequency link all have a particular amplitude and phase. When the signal is radiated well by the antenna (i.e., when the antenna is in place), the amplitude and phase of the feedback signal fed back to the SOC from the antenna port are different from those of the transmit signal, so that the number of correlation peaks obtained by performing correlation calculation on the transmit signal and the feedback signal within the preset time is small. On the contrary, when the antenna does not radiate the signal (if the antenna is not in place), the feedback signal fed back to the SOC from the antenna port has stronger correlation with the transmission signal, so that the number of correlation peaks obtained after performing correlation calculation on the transmission signal and the feedback signal within the preset time is larger. In the application, the number of the correlation peaks in the preset time can be used as a basis for judging whether the antenna is in place. It can be understood that when the antenna is not in place, the transmit signal of the SOC is mostly reflected by the antenna port, so that the correlation between the feedback signal detected by the coupler and the transmit signal is greater, and the SOC can calculate and obtain a greater number of correlation peaks. Accordingly, the SOC may determine that the antenna is not in place based thereon. The preset time can be flexibly set according to the actual use scene.

Similar to the above description about EVM, in the present application, the SOC may determine whether the antenna is in place according to a size relationship between the correlation peak number and a threshold corresponding to the correlation peak number (for example, referred to as correlation peak number threshold) in a preset time on the radio frequency link when performing in-place detection. And when the number of correlation peaks on the radio frequency link in the preset time is larger than the threshold value of the number of correlation peaks, the correlation between the feedback signal of the current link and the transmission signal is considered to be larger, and the antenna is not in place. Otherwise, when the number of correlation peaks on the radio frequency link within the preset time is smaller than the threshold value of the number of correlation peaks, the correlation between the feedback signal of the current link and the transmission signal is considered to be small, and the antenna is located. The threshold of the number of correlation peaks can also be obtained through a plurality of different ways. The obtaining method is similar to the EVM and is not described herein again.

Based on the above description of the EVM and the number of correlation peaks, whether the antenna is in place can be determined by any one of the radio frequency parameters of the EVM or the number of correlation peaks. According to the scheme provided by the application, the radio frequency domain parameters are adopted to judge whether the antenna is in place, and the influence of other factors is small, so that whether the antenna is in place can be more accurately determined.

In practical application, one of the EVM and the number of correlation peaks may be used to determine whether the antenna is in place, or the EVM and the number of correlation peaks may be considered at the same time to determine whether the antenna is in place comprehensively. Of course, the determination may be performed in combination with other parameters of the radio frequency domain. For example, the SOC may determine the power level of the feedback signal and determine whether the antenna is in place based thereon. When the antenna is in place, most of the power of the transmitted signal (i.e., the transmission power) is radiated by the antenna in the form of electromagnetic waves, and thus the power of the feedback signal (i.e., the feedback power) is less than the transmission power. Correspondingly, when the antenna is not in place, there is no significant difference in the feedback power compared to the transmit power. Thus, the magnitude relationship of the feedback power to the transmit power, such as the transmit/feedback power ratio, can be combined to determine whether the antenna is in place. For example, a larger transmit/feedback power ratio indicates a larger difference between the transmit power and the feedback power, i.e., the antenna is in position. The judgment of the corresponding relationship between the magnitude of the transmitting/feedback power and whether the antenna is in place can also be realized by setting a corresponding threshold value. The obtaining and using methods of the threshold are similar to those of the corresponding threshold of the number of EVM or correlation peaks, and are not described herein again. It will be appreciated that the more factors that are considered in determining whether the antenna is in place, the more accurate the result will be.

In order to make the in-place detection method of the antenna provided by the present application more clearly understood by those skilled in the art, the following description is made with reference to fig. 3. Referring to fig. 5, a flow chart of an antenna in-place detection method is shown. Wherein, it is taken as an example to determine whether the antenna is in place according to the EVM, the number of correlation peaks and the transmission/feedback power ratio. As shown in fig. 5, the method may include S501-S504.

S501, the communication equipment is electrified and started, and the EVM, the number of correlation peaks and the corresponding threshold of the transmission/feedback power ratio are determined.

Generally, when a communication device is powered on and started, initial configuration is required. For example, the communication device in fig. 3 is taken as an access device (AP) providing WLAN signal communication. When the AP is started in power-on, a corresponding cell can be established through initialization configuration so as to facilitate user access, and communication is carried out on different channels in the cell. During initialization configuration, the SOC in the AP may transmit a transmission signal to each radio frequency link, and at this time, the SOC may obtain a feedback signal on a corresponding link through a corresponding coupler on each radio frequency link. According to the feedback signals and the transmitting signals of each link, the SOC can obtain the corresponding EVM, the number of correlation peaks and the feedback/incident power ratio. It can be understood that, since the communication device is qualified when shipped from the factory, in this example, the communication device is considered to be in a normal operating state when powered on and started. Thus, the communication device can acquire the EVM, the number of correlation peaks and the transmission/feedback power ratio under the normal working state and store the EVM, the number of correlation peaks and the transmission/feedback power ratio as the threshold values of the corresponding parameters.

S502, the communication equipment detects the requirement of antenna on-position detection.

When the communication equipment works, whether the in-place detection is needed or not can be determined in a self-detection mode.

In this application, the SOC in the communication device may perform presence detection on the corresponding antenna by detecting when it is determined that the query command instructing presence detection on one or more antennas is received, that is, perform the following S503. Correspondingly, when the SOC does not receive the inquiry command, the SOC continues to maintain the detection state until the command is received, and then performs the following S503.

S503, the communication equipment determines the EVM, the number of correlation peaks and the transmission/feedback power ratio on the radio frequency link corresponding to the antenna.

After receiving the query command, the SOC of the communication device may obtain a corresponding feedback signal through the coupler on the rf link where the antenna to be detected in place is located, and determine, according to the feedback signal, the rf parameters, such as EVM, the number of correlation peaks, and the transmission/feedback power ratio, on the rf link where the antenna is located.

For example, referring to fig. 3, the SOC receives an inquiry command for performing in-place detection on antenna 1, antenna 2, and antenna 3. The SOC may obtain the feedback signal 1 on the radio frequency link corresponding to the antenna 1 through the coupler 1, and according to the feedback signal 1, the SOC may determine the EVM on the radio frequency link in the current state. According to the feedback signal 1 and the phase and amplitude conditions of the transmission signal sent by the SOC, the SOC can determine the number of correlation peaks on the radio frequency link in the current state. According to the feedback signal 1 and the power of the transmission signal sent by the SOC, the SOC can determine the transmission/feedback power ratio on the radio frequency link in the current state. Similarly, the SOC may obtain the feedback signal 2 on the radio frequency link corresponding to the antenna 2 through the coupler 2, and according to the feedback signal 2, the SOC may determine the EVM on the radio frequency link in the current state. According to the feedback signal 2 and the phase and amplitude conditions of the transmission signal sent by the SOC, the SOC can determine the number of correlation peaks on the radio frequency link in the current state. According to the feedback signal 2 and the power of the transmission signal sent by the SOC, the SOC can determine the transmission/feedback power ratio on the radio frequency link in the current state. The SOC may obtain the feedback signal 3 on the radio frequency link corresponding to the antenna 3 through the coupler 3, and according to the feedback signal 3, the SOC may determine the EVM on the radio frequency link in the current state. According to the feedback signal 3 and the phase and amplitude conditions of the transmission signal sent by the SOC, the SOC can determine the number of correlation peaks on the radio frequency link in the current state. According to the feedback signal 3 and the power of the transmission signal sent by the SOC, the SOC can determine the transmission/feedback power ratio on the radio frequency link in the current state.

S504, the communication device determines whether the antenna is in place.

After the radio frequency parameters on the radio frequency link corresponding to the antenna are obtained, the SOC of the communication device may determine whether the corresponding antenna is in place according to the stored threshold value of the corresponding radio frequency parameter. When the communication device determines whether the antenna is in place according to the plurality of radio frequency parameters, in order to improve the accuracy of determining that the antenna is not in place, in the present application, the SOC considers that the antenna is not in place only when all the radio frequency parameters indicate that the corresponding antenna is not in place.

For example, with reference to fig. 3, the SOC needs to perform on-site detection on the antenna 1, the antenna 2, and the antenna 3, the radio frequency parameter on the radio frequency link corresponding to the antenna 1 is EVM1, the number of correlation peaks is 1, the feedback/incident power ratio is 1, the radio frequency parameter on the radio frequency link corresponding to the antenna 2 is EVM2, the number of correlation peaks is 2, the feedback/incident power ratio is 2, the radio frequency parameter on the radio frequency link corresponding to the antenna 3 is EVM3, the number of correlation peaks is 3, and the feedback/incident power ratio is 3. If the EVM1, the correlation peak number 1, and the feedback/incident power ratio 1 are all larger than the respective corresponding thresholds, the SOC can confirm that the antenna 1 is not in place. If the EVM2, the number of correlation peaks 2 are all larger than the respective threshold, but the feedback/incident power ratio 2 is smaller than the corresponding threshold, the SOC may assume that the antenna 2 is in place. Similarly, if EVM3 is greater than the corresponding threshold, but correlation peak number 3 and feedback/incident power ratio 3 are less than the corresponding threshold, the SOC may assume antenna 2 is in place.

It is understood that when the result of whether the antennas indicated by different rf parameters are in-position is different, such as the EVM2 in the above example, if the correlation peak number 2 is greater than the respective threshold value but the feedback/incident power ratio 2 is less than the corresponding threshold value, or the EVM3 is greater than the corresponding threshold value but the correlation peak number 3 and the feedback/incident power ratio 3 are less than the corresponding threshold value, it indicates that the corresponding antennas may be in a state of not being in-position or in-position. Therefore, in some examples of the present application, the SOC may detect the radio frequency parameters on the radio frequency link where the corresponding antenna is located again, determine the relationship between each radio frequency parameter and the corresponding threshold again, and determine whether the antenna is in place according to the relationship.

In some implementations of the present application, when it is determined that all antennas are in place, the SOC may feed back the polling state shown in S502 above, so that the SOC may continue to receive other query commands and execute the query commands accordingly. And when the antenna is determined to be out of position, the SOC can send out a warning so as to report the information of the antenna out of position, so that the problem of the antenna out of position can be quickly processed. Thereafter, the SOC may cyclically execute the polling operation in S502 described above.

It should be noted that, in the above example, the communication device determines to perform the in-place detection of the corresponding antenna according to the received query command, and in other examples of the present application, the SOC may further trigger the in-place detection of the antenna according to a preset period. It will be appreciated that after a certain period of operation, the antenna may be out of position. Therefore, the SOC can detect whether the antenna is in place according to a preset period, so as to ensure normal operation of the antenna. The period may be preset in the communication device or may be set by the user, which is not limited in this application.

Based on the in-place detection scheme of the antenna, whether the antenna is in place or not can be determined by determining the radio frequency parameters on the radio frequency link corresponding to the antenna. The antenna can be accurately detected whether the antenna is in place or not on the premise of not adding extra devices. Meanwhile, the scheme does not make any requirements on the form of the antenna, so that the method can be generally applied to the antenna in-place detection in the communication equipment with different antennas. Furthermore, the detection result of the non-in-place can be reported in an alarm mode, so that the antenna of the non-in-place can be quickly known.

The above description has mainly described the scheme provided in the present application from the perspective of a communication device. To implement the above functions, it includes hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the present application is capable of being implemented as hardware or a combination of hardware and computer software in combination with the exemplary elements and algorithm steps described in connection with the disclosure herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The present application may perform functional module division on the communication device according to the method example, for example, the communication device may include an in-place detection apparatus, the in-place detection apparatus may divide each functional module corresponding to each function, or may integrate two or more functions into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation.

Referring to fig. 6, a schematic block diagram of an in-place detection apparatus 600 provided in the present application is shown. The presence detecting apparatus 600 may be disposed in a communication device, where antennas are further disposed, and each antenna corresponds to one radio frequency link. The in-place detection apparatus 600 may be used to perform any one of the antenna in-place detection methods provided in the present application.

As shown in fig. 6, the presence detecting apparatus 600 may include an obtaining unit 601 and a determining unit 602.

The obtaining unit 601 is configured to obtain a radio frequency parameter on the radio frequency link, where the radio frequency parameter includes at least one of the following parameters: error vector magnitude EVM, and correlation peak number. For example, the acquisition unit 601 may be configured to execute S401 shown in fig. 4.

The determining unit 602 is configured to determine whether the antenna is in place according to the rf parameter. For example, the determining unit 602 may be configured to execute S402 shown in fig. 4.

In a possible design, the determining unit 602 is configured to determine that the antenna is not in place when the rf parameter is greater than a corresponding threshold.

In a possible design, the rf parameters include the EVM and the number of correlation peaks, and the determining unit 602 is configured to determine that the antenna is not in place when both the EVM and the number of correlation peaks are greater than corresponding thresholds.

In one possible design, the apparatus further includes: a receiving unit 603, where the receiving unit 603 is configured to receive an inquiry command, where the inquiry command is used to indicate whether the antenna is in place.

In one possible design, the apparatus further includes: a transmitting unit 604, where the transmitting unit 604 is configured to transmit an alarm indication when it is determined that the antenna is not in place, where the alarm indication indicates that the antenna is not in place.

It should be noted that all relevant contents of each step related to the above method example may be referred to the functional description of the corresponding functional module, and are not described herein again. It is understood that the obtaining unit 601 shown in this example may also be used to implement the function of the feedback module shown in fig. 2. The determination unit 602, shown in this example, may also be used to implement the functionality of the processing module as shown in fig. 2. Optionally, but not necessarily, the presence detecting apparatus 600 provided in the present application may further include a processing module or a control module for supporting the obtaining unit 601 and/or the determining unit 602 and/or the receiving unit 603 and/or the transmitting unit 604 to complete corresponding functions, if necessary.

Fig. 7 shows a schematic diagram of a chip system 700. The chip system 700 may include: a processor 701 and a communication interface 702 to enable the communication device to carry out the functions referred to in the above examples. In one possible design, the system-on-chip further includes a memory for storing necessary program instructions and data for the terminal. The chip system may be constituted by a chip, or may include a chip and other discrete devices. It should be noted that all relevant contents of each step related to the above method example may be referred to the functional description of the corresponding functional module, and are not described herein again.

The functions or acts or operations or steps, etc., in the above examples may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions described in accordance with the present application are generated, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

While the present application has been described in conjunction with specific features and aspects thereof, it will be apparent that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include such modifications and variations.

Claims

1. An in-place detection method of an antenna is applied to communication equipment, the communication equipment is provided with the antenna and a radio frequency link corresponding to the antenna, and the method comprises the following steps:

obtaining radio frequency parameters on the radio frequency link, wherein the radio frequency parameters comprise at least one of the following parameters: error vector magnitude EVM, number of correlation peaks;

and determining whether the antenna is in place or not according to the radio frequency parameters.

2. The method of claim 1, wherein the determining whether the antenna is in place according to the radio frequency parameter comprises:

and when the radio frequency parameter is larger than the corresponding threshold value, determining that the antenna is not in place.

3. The method of claim 2, wherein the radio frequency parameters include the EVM and the number of correlation peaks;

the determining whether the antenna is in place according to the radio frequency parameter includes:

and when the EVM and the number of the correlation peaks are both larger than corresponding thresholds, determining that the antenna is not in place.

4. The method according to any one of claims 1 to 3,

the threshold value corresponding to the EVM is determined according to the EVM on the radio frequency link corresponding to the antenna when the communication equipment works normally;

the threshold corresponding to the number of the correlation peaks is determined according to the number of the correlation peaks on the radio frequency link corresponding to the antenna when the communication device works normally.

5. The method according to any of claims 1-4, wherein prior to said obtaining radio frequency parameters on said radio frequency link, the method further comprises:

and receiving an inquiry command, wherein the inquiry command is used for indicating whether the antenna is inquired in place.

6. The method of any of claims 1-5, wherein upon determining that the antenna is not in place, the method further comprises:

an alarm to indicate that the antenna is not in place.

7. An in-place detection device of an antenna, which is applied to a communication device, wherein the communication device is provided with the antenna and a radio frequency link corresponding to the antenna, and the device comprises: an acquisition unit and a determination unit for determining the position of the object,

the acquiring unit is configured to acquire a radio frequency parameter on the radio frequency link, where the radio frequency parameter includes at least one of the following parameters: error vector magnitude EVM, and number of correlation peaks;

the determining unit is configured to determine whether the antenna is in place according to the radio frequency parameter.

8. The apparatus of claim 7,

the determining unit is configured to determine that the antenna is not in place when the radio frequency parameter is greater than a corresponding threshold.

9. The apparatus of claim 8, wherein the radio frequency parameters comprise the EVM and the number of correlation peaks,

the determining unit is configured to determine that the antenna is not in place when the EVM and the number of correlation peaks are both greater than corresponding thresholds.

10. The apparatus according to any one of claims 7-9,

11. The apparatus according to any one of claims 7-10, further comprising: a receiving unit for receiving the received data,

the receiving unit is configured to receive an inquiry command, where the inquiry command is used to indicate whether the antenna is in place for inquiry.

12. The apparatus according to any one of claims 7-11, further comprising: a transmitting unit for transmitting the data to the receiving unit,

the transmitting unit is configured to transmit an alarm indication when it is determined that the antenna is not in place, where the alarm indication is used to indicate that the antenna is not in place.

13. A communication device comprising an antenna, a coupler and a processor, the processor and the coupler being configured to perform in-situ detection of the antenna according to the method of any one of claims 1-6.

14. A computer-readable storage medium comprising computer instructions which, when executed, perform a method of in-place detection of an antenna as recited in any of claims 1-6.

15. A chip system, comprising a processing circuit, an interface, and a storage medium; the processing circuit is used for calling and running a computer program stored in the storage medium from the storage medium to execute the in-place detection method of the antenna according to any one of claims 1-6.