Antenna tuning method and device, electronic equipment and storage medium

Abstract

The invention discloses an antenna tuning method and device, electronic equipment and a storage medium, and relates to the technical field of communication, and the method comprises the steps: receiving feedback signals transmitted by M antenna units, evaluating the working state of a target antenna unit based on the feedback signals, and obtaining an evaluation result, and when the evaluation result indicates that the working state does not reach the target state, an adjustment instruction is output to the tuning unit, and the adjustment instruction is used for adjusting the current working parameters of the target antenna unit. The technical problem that the tuning effect is poor due to the fact that the surrounding environment condition cannot be obtained when an open-loop tuning strategy is adopted to tune the antenna of the communication terminal in the related technology is solved.

Description

Technical Field

[0001] The present invention relates to the field of communication technology or other related fields, and in particular to an antenna tuning method and device, electronic equipment and storage medium. Background Art

[0002] In recent years, mobile communication technology has continued to develop, and antenna technology has been widely used in various application scenarios, including but not limited to 5G communication, satellite communication, and Internet of Things communication.

[0003] Mobile cellular communication terminals support many frequency bands and have high requirements for antenna design. It is difficult for antennas in miniaturized terminals to achieve balanced performance in all frequency bands. Antenna tuning technology and tuning switch materials or modules are often required to adjust the antenna resonant frequency to adapt to different communication frequencies and optimize the antenna performance at that frequency.

[0004] In the related art, conventional antenna tuning is open-loop tuning. Several states are preset in the terminal design, and the terminal can only switch between a limited number of states. Moreover, the environmental conditions cannot be accurately obtained, and the terminal can only switch according to the preset scene. Here, it is necessary to rely on the feedback of the transmitter or receiver of the other end, and the terminal cannot be adjusted to the optimal state. For example, in the patent document US10278218B2, a method is disclosed for tuning the antenna of the terminal according to the RSSI or signal strength of the signal transmitted by the other end received by the product. The optimization is also based on the idea of ​​trying to see if a better signal is received. It is necessary to interact with the AP, and without knowing the state of the other end and the environment itself, the debugging is only to optimize as much as possible, and it is impossible to achieve the best.

[0005] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0006] The embodiments of the present invention provide an antenna tuning method and device, an electronic device and a storage medium, so as to at least solve the technical problem in the related art that when an open-loop tuning strategy is used to tune the antenna of a communication terminal, the surrounding environment conditions cannot be obtained, resulting in poor tuning effect.

[0007] According to one aspect of an embodiment of the present invention, there is provided an antenna tuning method, comprising: receiving feedback signals transmitted by M antenna units, wherein the feedback signal is generated after receiving a radio frequency signal transmitted by a target antenna unit, N antenna units are deployed at a mobile communication terminal, each antenna unit corresponds to at least one communication frequency band, the target antenna unit is any one of the first to Nth antenna units, N is a positive integer greater than 1, and M is greater than 0 and less than or equal to N; based on the feedback signal, evaluating the working state of the target antenna unit to obtain an evaluation result; when the evaluation result indicates that the working state has not reached the target state, outputting an adjustment instruction to a tuning unit, wherein the adjustment instruction is used to adjust the current working parameters of the target antenna unit.

[0008] Optionally, based on the feedback signal, evaluating the working state of the target antenna unit to obtain the evaluation result includes: acquiring the optimal working parameters associated with the target antenna unit in the target state in the storage unit; extracting the antenna state parameters of the target antenna unit in the feedback signal when transmitting a radio frequency signal; comparing the optimal working parameters in the target state with the antenna state parameters of the target antenna unit, and evaluating the working state of the target antenna unit based on the comparison result to generate the evaluation result.

[0009] Optionally, when the evaluation result indicates that the working state has not reached the target state, outputting an adjustment instruction to the tuning unit includes: when the evaluation result indicates that the working state has not reached the target state, calculating the modification value of the antenna resonant frequency and the modification value of the antenna impedance; determining the antenna pattern modification parameters based on the antenna pattern of the target antenna unit at the current moment; generating the adjustment instruction based on the modification value of the antenna resonant frequency, the modification value of the antenna impedance or the antenna pattern modification parameters, and outputting the adjustment instruction to the tuning unit corresponding to the target antenna unit.

[0010] Optionally, the antenna tuning method also includes: when the evaluation result indicates that the target antenna unit is in an abnormal state, obtaining abnormal operating parameters and adjustment strategies corresponding to T types of antenna abnormal states in the storage unit, wherein T is a positive integer greater than 1; comparing each of the abnormal operating parameters with the antenna state parameters of the target antenna unit when transmitting a radio frequency signal, and confirming the type of abnormal state based on the comparison result; based on the type of abnormal state, calling the corresponding adjustment strategy, and transmitting the adjustment instruction containing the adjustment strategy to the tuning unit.

[0011] Optionally, before receiving the feedback signal transmitted by M antenna units, the antenna tuning method also includes: after the Mth antenna unit receives the radio frequency signal transmitted by the target antenna unit, a coupling unit couples the radio frequency signal to generate the feedback signal.

[0012] Optionally, the coupling unit is a three-port network, wherein the first end is connected to the antenna unit, the second end is connected to the communication unit, and the third end is connected to the main control end of the mobile communication terminal, and the coupling unit is connected in series in the communication link.

[0013] Optionally, the antenna tuning method further includes: when the evaluation result indicates that the working state has reached the target state, maintaining the current working parameters of the target antenna unit, and controlling the target antenna unit to continue communicating according to the current working parameters.

[0014] According to another aspect of an embodiment of the present invention, a mobile communication terminal is also provided, comprising: N antenna units, including at least one type of antenna, N being a positive integer greater than 1; a coupling unit, each coupling unit corresponding to one of the antenna units, and after receiving the radio frequency signal transmitted by the target antenna unit, the coupling unit performs coupling processing on the radio frequency signal, generates a feedback signal, and sends the feedback signal to a main control end; the main control end executes any one of the antenna tuning methods described above; and a tuning unit adjusts the current working parameters of each antenna unit.

[0015] According to another aspect of an embodiment of the present invention, an antenna tuning device is also provided, including: a signal receiving unit, used to receive feedback signals transmitted by M antenna units, wherein the feedback signal is generated after receiving the radio frequency signal transmitted by the target antenna unit, and N antenna units are deployed in the mobile communication terminal, each antenna unit corresponds to at least one communication frequency band, and the target antenna unit is any one of the first to Nth antenna units, N is a positive integer greater than 1, and M is greater than 0 and less than or equal to N; an antenna evaluation unit, used to evaluate the working state of the target antenna unit based on the feedback signal to obtain an evaluation result; an antenna tuning unit, used to output an adjustment instruction to the tuning unit when the evaluation result indicates that the working state has not reached the target state, wherein the adjustment instruction is used to adjust the current working parameters of the target antenna unit.

[0016] Optionally, the antenna evaluation unit includes: an acquisition module, used to acquire the optimal operating parameters associated with the target antenna unit in the target state in the storage unit; an extraction module, used to extract the antenna state parameters of the target antenna unit in the feedback signal when transmitting the radio frequency signal; a parameter comparison module, used to compare the optimal operating parameters in the target state and the antenna state parameters of the target antenna unit, and evaluate the working state of the target antenna unit based on the comparison result to generate the evaluation result.

[0017] Optionally, the antenna tuning unit includes: a modification value calculation module, used to calculate the modification value of the antenna resonant frequency and the modification value of the antenna impedance when the evaluation result indicates that the working state has not reached the target state; a pattern modification module, used to determine the antenna pattern modification parameters based on the antenna pattern of the target antenna unit at the current moment; an instruction generation module, used to generate the adjustment instruction based on the modification value of the antenna resonant frequency, the modification value of the antenna impedance or the antenna pattern modification parameters, and output the adjustment instruction to the tuning unit corresponding to the target antenna unit.

[0018] Optionally, the antenna tuning device also includes: an abnormal operating parameter acquisition unit, used to obtain abnormal operating parameters and adjustment strategies corresponding to T types of antenna abnormal states in the storage unit when the evaluation result indicates that the target antenna unit is in an abnormal state, wherein T is a positive integer greater than 1; an antenna state parameter comparison unit, used to compare each of the abnormal operating parameters with the antenna state parameters of the target antenna unit when transmitting a radio frequency signal, and confirm the type of abnormal state based on the comparison result; an instruction transmission unit, used to call the corresponding adjustment strategy based on the abnormal state type, and transmit the adjustment instruction containing the adjustment strategy to the tuning unit.

[0019] Optionally, the antenna tuning device also includes: a coupling processing unit, which is used to couple the RF signal to generate the feedback signal after the Mth antenna unit receives the RF signal transmitted by the target antenna unit before receiving the feedback signal transmitted by the M antenna units.

[0020] Optionally, the coupling unit is a three-port network, wherein the first end is connected to the antenna unit, the second end is connected to the communication unit, and the third end is connected to the main control end of the mobile communication terminal, and the coupling unit is connected in series in the communication link.

[0021] Optionally, the antenna tuning device also includes: a work maintaining unit, used to maintain the current working parameters of the target antenna unit and control the target antenna unit to continue communicating according to the current working parameters when the evaluation result indicates that the working state has reached the target state.

[0022] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is further provided, wherein the computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute any one of the above-mentioned antenna tuning methods.

[0023] According to another aspect of an embodiment of the present invention, there is also provided an electronic device, comprising one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement any one of the above-mentioned antenna tuning methods.

[0024] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps of any one of the above antenna tuning methods are implemented.

[0025] In the present disclosure, feedback signals transmitted by M antenna units are received, and based on the feedback signals, the working state of the target antenna unit is evaluated to obtain an evaluation result. When the evaluation result indicates that the working state has not reached the target state, an adjustment instruction is output to the tuning unit, wherein the feedback signal is generated after receiving the radio frequency signal transmitted by the target antenna unit, N antenna units are deployed in the mobile communication terminal, each antenna unit corresponds to at least one communication frequency band, and the target antenna unit is any one of the first to Nth antenna units, and the adjustment instruction is used to adjust the current working parameters of the target antenna unit.

[0026] Based on the above-mentioned disclosed content, a closed-loop tuning method can be adopted based on the current network environment and the terminal surrounding environment. By utilizing the feedback signals of different antennas to implement closed-loop processing, the optimal antenna radiation effect and the optimal terminal performance can be achieved, thereby solving the technical problem in the related technology that when an open-loop tuning strategy is used to tune the antenna of the communication terminal, the surrounding environment conditions cannot be obtained, resulting in poor tuning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0028] Figure 1 is a partial structural diagram of an optional mobile communication terminal according to an embodiment of the present invention;

[0029] Figure 2 is a flow chart of an optional antenna tuning method according to an embodiment of the present invention;

[0030] Figure 3 is a flow chart of a communication method supporting dynamic tuning of a closed-loop antenna according to an embodiment of the present invention;

[0031] Figure 4 is a schematic diagram of an optional antenna tuning device according to an embodiment of the present invention;

[0032] Figure 5 The present invention is a hardware structure block diagram of an electronic device (or mobile device) for executing an antenna tuning method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] To facilitate those skilled in the art to understand the present invention, some terms or nouns involved in the embodiments of the present invention are explained below:

[0036] Mobile communication terminals refer to terminals that can communicate through mobile cellular networks. Terminal types include mobile phones, tablet computers, mobile routers, smart watches and other devices that can perform voice calls, text message sending, data transmission and other functions through mobile networks.

[0037] Antennas are an important part of communication systems. They are responsible for transmitting and receiving signals and are the basis for communication. Antennas are generally composed of metal structures and feeders. The structural design has an important impact on the performance of antennas. At present, antenna design is developing towards miniaturization, integration and intelligence. The intelligence of antennas is reflected in algorithms based on status monitoring, parameter adjustment and signal processing, which are used to achieve adaptive adjustment of antennas and improve communication performance. For example, antenna tuning technology adjusts the antenna structural parameters to make the antenna work in the best state and improve communication performance.

[0038] The present invention provides a closed-loop tuning scheme based on feedback information to achieve closed-loop adjustment of antenna parameters, realize automatic dynamic adjustment and optimization of antennas, and improve communication performance. In closed-loop control, signal tuning is an important part of antenna tuning. In the prior art, the signal tuning process of the antenna is: the receiving end receives the signal and the transmitting end sends the signal. The receiving end detects the tuning information of the signal and adjusts the signal tuning state according to the tuning information; the transmitting end adjusts the signal tuning state based on the working state of the antenna and sends a signal to the receiving end. The transmitting end and the receiving end adjust the signal tuning state based on the tuning information, and closed-loop control cannot be achieved. The mobile communication terminal in the present invention can rely on the feedback signal received by at least one antenna unit of itself to optimize the tuning performance of the target antenna unit, and achieve the optimal effect of antenna radiation and the best product performance based on the current network environment and the surrounding environment of the product.

[0039] It should be noted that the antenna tuning method and device of the present invention can be used in the field of communication technology to perform closed-loop tuning design on cellular antennas on multi-band coexisting multi-antenna mobile communication terminals.

[0040] The following embodiments of the present invention can be applied to various mobile communication terminals / devices that deploy multi-band coexistence antennas, and perform closed-loop tuning design on cellular antennas without relying on feedback from the opposite transmitter or receiver. The mobile communication terminal can evaluate the tuning state based on the signals received by antennas of different frequency bands and adjust it to the optimal state, thereby improving the communication efficiency and signal quality of the antenna unit in complex environments, and is suitable for a variety of communication standards and application scenarios.

[0041] The present invention is described in detail below in conjunction with various embodiments.

[0042] Embodiment 1

[0043] According to an embodiment of the present invention, an embodiment of an antenna tuning method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0044] It should be noted that, according to one aspect of an embodiment of the present invention, a mobile communication terminal is provided, comprising: N antenna units, including at least one type of antenna, N being a positive integer greater than 1; a coupling unit, each coupling unit corresponding to an antenna unit, and after receiving the radio frequency signal transmitted by the target antenna unit, the coupling unit couples the radio frequency signal to generate a feedback signal, and sends the feedback signal to a main control end; the main control end executes any one of the above antenna tuning methods; and a tuning unit adjusts the current working parameters of each antenna unit.

[0045] Figure 1 is a partial structural diagram of an optional mobile communication terminal according to an embodiment of the present invention, such as Figure 1 As shown, the mobile communication terminal includes: an antenna unit 1, an antenna unit 2, a coupling unit, a tuning unit, a main control terminal, and a storage unit.

[0046] It should be noted that the number of antenna units included in the mobile communication terminal mentioned in this embodiment is not limited. Figure 1 Antenna unit 1 and antenna unit 2 are shown, and antenna unit 3, antenna unit 4 ... antenna unit N may also be included. The mobile communication terminal is deployed with N antenna units, each of which corresponds to at least one communication frequency band, and the target antenna unit is any one of the first to Nth antenna units, where N is a positive integer greater than 1. Signal feedback is performed from antenna unit 2 to antenna unit N, and antenna units 2 to N are another type of antenna in a multi-frequency communication system, such as a WiFi communication antenna; by using the feedback signal of the antenna to achieve a closed loop, different tuning methods can be used to control the antenna to work in the optimal working state in different scenarios (for example, there is interference, obstruction, and other objects affecting the antenna resonant frequency, matching, directivity, etc. around the mobile communication terminal) according to different environments, so as to meet the best signal transmission.

[0047] The main control end mentioned in this embodiment is responsible for receiving the signal fed back by the coupling unit, and after evaluating the signal status, outputting the control signal to the tuning unit to adjust the RF device or parameters.

[0048] It should be noted that during the tuning process, the main control unit will refer to and compare the optimal parameter status of the antenna in the storage unit, and adjust the antenna to continuously approach the optimal value; the storage unit can also provide optimal parameters and strategies for several abnormal antenna states, so that even if some hardware is damaged in the user scenario, it can still work in the optimal state.

[0049] It should be noted that the storage unit mentioned in this embodiment is for storing data, similar to the memory of a computer, and is a general module, including a read-only memory (ROM), a random access memory (RAM), etc. Among them, the storage unit stores the antenna status information preset in the factory state of the terminal and the optimal working parameters of the antenna. Subsequent antenna feedback and adjustment can refer to the factory information.

[0050] It should be noted that the tuning unit mentioned in this embodiment is used to adjust the antenna state. The tuning element used by the tuning unit can be of various types, including passive devices such as capacitors, inductors, resistors, etc., and can also be devices such as diodes and radio frequency switches to change the structure of the antenna.

[0051] Here, the working principle of the tuning unit is to meet the working requirements of different frequency bands or the isolation requirements of different antennas by modifying the impedance or S parameters of the antenna; or to modify the antenna's directional pattern to meet different radiation requirements. The antenna resonant frequency and impedance matching can be achieved by switching to different passive device links, and the directional pattern adjustment can be switched to different field patterns.

[0052] It should be noted that the coupling unit in this embodiment can be understood as a three-port network, which is connected in series in the communication link, with one end connected to the antenna unit, one end connected to the communication unit, and the third end is the feedback signal connected to the main control unit.

[0053] It should be noted that the coupling unit mentioned in this embodiment is to couple the signal received by the antenna to obtain feedback information and transmit it to the main control.

[0054] The working process of closed-loop antenna tuning of a mobile communication terminal includes: when the terminal communicates, the radio frequency signal is sent from antenna 1-n. Since antenna 2-2n can receive the signal from antenna 1-n, the coupling module transmits the coupling signal to the main control unit. The main control unit evaluates whether the current working state of the antenna is optimal. If it is not optimal, real-time adjustment is performed, and the antenna state is controlled by the adjustment unit to achieve the optimal state.

[0055] It should also be noted that Figure 1 The illustrated mobile communication terminal does not include all units, but only illustrates the modules involved in the tuning function. Functional modules responsible for communication, power supply, etc. are not expanded for the time being.

[0056] The following is an explanation of a closed-loop antenna dynamic tuning solution applicable to the above-mentioned mobile communication terminal.

[0057] Figure 2 is a flow chart of an optional antenna tuning method according to an embodiment of the present invention, such as Figure 2 As shown, the antenna tuning method includes:

[0058] It should be noted that before receiving the feedback signals transmitted by the M antenna units, after the Mth antenna unit receives the RF signal transmitted by the target antenna unit, the coupling unit couples the RF signal to generate a feedback signal.

[0059] Among them, the coupling unit mentioned in this embodiment can be a three-port network, in which the first end is connected to the antenna unit (target antenna unit), the second end is connected to the communication unit (antenna units 2 to N), and the third end is connected to the main control end of the mobile communication terminal, and the coupling unit is connected in series in the communication link.

[0060] In addition, the type of the target antenna unit mentioned in this embodiment includes a cellular communication antenna, and the type of the Mth antenna unit may include a wireless WiFi communication antenna, or may be other wireless communication antennas. Figure 1 The antenna unit 1) is an antenna module of a multi-frequency communication system, such as a cellular communication antenna, which supports the master end to control the tuning unit to perform closed-loop dynamic tuning.

[0061] In the mobile communication terminal, antenna units 2 to N receive the radio frequency signal transmitted by antenna unit 1 during normal communication. When the radio frequency signal passes through, the coupling unit can extract a part of the signal from the main link as a feedback signal. When extracting the feedback signal, the coupling unit can separate the signal according to a certain ratio without significantly affecting the performance of the main communication link based on the characteristics of the coupler, and generate a feedback signal after coupling the extracted signal, and transmit the feedback signal to the main control end.

[0062] Step S201, receiving feedback signals transmitted by M antenna units, wherein the feedback signal is generated after receiving the radio frequency signal transmitted by the target antenna unit, N antenna units are deployed in the mobile communication terminal, each antenna unit corresponds to at least one communication frequency band, the target antenna unit is any one of the first to Nth antenna units, N is a positive integer greater than 1, and M is greater than 0 and less than or equal to N.

[0063] It should be noted that M in this embodiment may be 1, or a number greater than 1 and less than or equal to N, that is, the master control end may receive feedback signals from one or more antenna units.

[0064] After receiving the feedback signal, the master control end can measure the signal strength, phase information and possible frequency characteristics of the signal through the built-in signal processing circuit or software algorithm. The signal strength (RSSI) can be used to evaluate the antenna radiation efficiency and receiving performance. The phase information can be used to determine the phase difference between different antennas, which is especially important in the synchronization and directional pattern adjustment of multi-antenna systems. The frequency characteristics can help identify whether the antenna resonates in the target frequency band and whether it needs to be adjusted to avoid interference.

[0065] Step S202: Based on the feedback signal, the working state of the target antenna unit is evaluated to obtain an evaluation result.

[0066] Optionally, step S202 includes: obtaining the optimal operating parameters of the associated target antenna unit in the storage unit in the target state; extracting the antenna state parameters of the target antenna unit in the feedback signal when transmitting the radio frequency signal; comparing the optimal operating parameters in the target state and the antenna state parameters of the target antenna unit, and evaluating the working state of the target antenna unit based on the comparison result to generate an evaluation result.

[0067] After receiving the feedback signals from the M antenna units, the master control end evaluates the first to the Nth antenna units. Here, it is described that the working state of the target antenna unit is evaluated, and a control signal is output to the tuning unit to adjust the working state of the target antenna unit. The antenna units 1 to N receive the RF signals transmitted by the target antenna unit. These signals may change in strength, phase, frequency characteristics, etc., depending on the current communication environment (such as distance, obstacles, interference from adjacent frequency bands, etc.). The feedback signal is transmitted to the master control end, and the master control end first performs signal preprocessing, such as amplification and filtering, to eliminate noise and interference in the coupled signal to ensure the accuracy of subsequent signal analysis. The master control end extracts the signal characteristics of the preprocessed feedback signal, including signal strength (RSSI), phase difference, signal frequency characteristics, etc. These characteristics will be used to evaluate the working state of the target antenna unit. The master control end compares the preset antenna working parameters (including resonant frequency, directional pattern, impedance matching, etc.) in the storage unit to evaluate the working state of the target antenna unit and obtain an evaluation result.

[0068] It should be noted that the evaluation of the first to Nth antenna units in this embodiment can optimize the status of one or more units; for example, after optimizing the first antenna unit, the second antenna unit can be optimized; conversely, the status of the M antenna units can also be optimized through the feedback of the first antenna unit, but it needs to be executed in sequence.

[0069] Step S203: When the evaluation result indicates that the working state has not reached the target state, output an adjustment instruction to the tuning unit, wherein the adjustment instruction is used to adjust the current working parameters of the target antenna unit.

[0070] Optionally, step S203 includes: when the evaluation result indicates that the working state has not reached the target state, calculating the modification value of the antenna resonant frequency and the modification value of the antenna impedance; determining the antenna pattern modification parameters based on the antenna pattern of the target antenna unit at the current moment; generating an adjustment instruction based on the modification value of the antenna resonant frequency, the modification value of the antenna impedance or the antenna pattern modification parameters, and outputting the adjustment instruction to the tuning unit corresponding to the target antenna unit.

[0071] It should be noted that when adjusting the resonant frequency, the main control end can adjust the value of the tuning unit (including various tunable elements) according to the feedback signal of the Mth antenna unit. For example, if the current resonant frequency of the target antenna unit deviates from the optimal value, the main control end will calculate the capacitance or inductance value that needs to be adjusted and convert it into a control signal. After receiving the adjustment instruction, the tuning unit adjusts the value of the tuning unit, for example, by changing the dielectric constant of the variable capacitor, the core characteristics and physical position of the variable inductor, or controlling the RF switch to switch to a different passive device link, thereby changing the resonant frequency of the target antenna unit to be close to the preset or optimal frequency point.

[0072] It should be noted that when adjusting the impedance matching network, the tuning unit may contain an impedance matching network, including a series of passive devices, such as inductors, capacitors, and resistors, which are used to adjust the impedance between the antenna and the feeder to achieve the best matching state. The master control end evaluates the impedance matching state of the target antenna unit based on the signal feedback of the M antenna units. If a mismatch is found, the master control end generates a control signal to instruct the impedance matching network in the adjustment unit to make adjustments. The tuning unit then adjusts the impedance matching in real time by changing the inductance, capacitance, or resistance value in the matching network, or by controlling the RF switch to select different matching paths, to ensure that the impedance of the target antenna unit in different frequency bands is kept in the best matching state with the feeder, thereby improving signal transmission efficiency and communication quality.

[0073] It should also be noted that when adjusting the directional pattern, the tuning unit may include components that can change the antenna structure, such as movable components or RF switches, and switch the radiation mode or field pattern of the antenna through control signals. The main control end analyzes whether the current antenna radiation direction is optimal based on the signal strength and phase information of the M antenna units, and then generates a control signal to instruct the adjustment unit to adjust the radiation pattern of the antenna. The tuning unit adjusts the directional pattern of the target antenna unit by changing the physical connection state of the antenna (for example, using an RF switch to adjust the antenna feed point or change the phase difference of the antenna array) to adapt to changes in the surrounding environment and optimize the signal transmission direction.

[0074] It should be noted that the storage unit can also provide several optimal parameters and strategies for antenna abnormal states, so that even if some hardware is damaged in the user scenario, it can still work in the optimal state. When adjusting the antenna in this embodiment, the optimal parameters and corresponding various adjustment strategies stored in the storage unit under abnormal conditions can also be used. The antenna tuning method also includes: when the evaluation result indicates that the target antenna unit is in an abnormal state, obtain the abnormal working parameters and adjustment strategies corresponding to T types of antenna abnormal states in the storage unit, where T is a positive integer greater than 1; compare each abnormal working parameter with the antenna state parameter of the target antenna unit when transmitting the RF signal, and confirm the type of abnormal state based on the comparison result; call the corresponding adjustment strategy based on the abnormal state type, and transmit the adjustment instruction containing the adjustment strategy to the tuning unit.

[0075] Furthermore, the antenna tuning method also includes: when the evaluation result indicates that the working state has reached the target state, maintaining the current working parameters of the target antenna unit, and controlling the target antenna unit to continue communicating according to the current working parameters.

[0076] The above antenna tuning method receives feedback signals transmitted by M antenna units, evaluates the working state of the target antenna unit based on the feedback signals, obtains an evaluation result, maintains the current working parameters of the target antenna unit when the evaluation result indicates that the working state has reached the target state, and controls the target antenna unit to continue communicating according to the current working parameters when the evaluation result indicates that the working state has not reached the target state, outputs an adjustment instruction to the tuning unit, wherein the feedback signal is generated after receiving the radio frequency signal transmitted by the target antenna unit, and N antenna units are deployed in the mobile communication terminal, and the adjustment instruction is used to adjust the current working parameters of the target antenna unit. In this embodiment, a closed-loop tuning method can be adopted based on the current network environment and the surrounding environment of the terminal, and closed-loop processing is realized by utilizing the feedback signals of different antennas to achieve the optimal effect of antenna radiation and the best performance of the terminal, thereby solving the technical problem that when the open-loop tuning strategy is used to tune the antenna of the communication terminal in the related art, the surrounding environment cannot be obtained, resulting in poor tuning effect.

[0077] Furthermore, the antenna tuning method provided in this embodiment also includes: adjusting the state of the corresponding tuning unit based on the signal strength and phase difference of each antenna unit.

[0078] After receiving the feedback signals from M antenna units (1 antenna unit or multiple antenna units), the master end analyzes the feedback signals and compares the information such as signal strength and phase difference with the optimal working parameters in the storage unit. If there is a difference between the current parameters and the optimal working parameters, the master end will calculate the parameters that need to be adjusted in the tuning unit based on this difference, such as changing the variable capacitance or inductance value in the tuning unit, and adjusting the resonance point, impedance matching and radiation pattern of the target antenna unit.

[0079] The present invention is described below by means of another optional implementation manner.

[0080] Figure 3 is a flow chart of a communication method supporting dynamic tuning of a closed-loop antenna according to an embodiment of the present invention. Figure 3 As shown, including:

[0081] In the first step, after starting, antenna 1 enters the communication state and transmits the radio frequency signal.

[0082] The antenna unit 1 is an antenna module of a multi-frequency communication system, such as a cellular communication antenna, which supports the main control end to perform closed-loop dynamic tuning on the tuning unit.

[0083] In the second step, after antenna 2 receives the signal, it is coupled through the coupling unit and then the feedback signal is transmitted to the main control end.

[0084] Signal feedback is performed through antenna unit 2 to antenna unit n (antenna units 2 to n are another type of antenna of the multi-frequency communication system, such as a WI FI communication antenna).

[0085] In the third step, the master end evaluates whether the feedback signal is optimal. If so, it executes the fourth step; if not, it executes the fifth step.

[0086] The fourth step is to maintain the existing antenna parameters to continue communication and continue to monitor the antenna status.

[0087] The fifth step is to adjust the tuning unit to optimize the working parameters of the antenna.

[0088] Through the above implementation, the signal of antenna 1 is fed back to the main control through antennas 2 to n and the closed-loop control mechanism and algorithm are performed. For example, the parameters of antenna 1, including the resonance point, directional pattern, impedance matching, etc., are adjusted through the signal strength and phase received by each antenna to optimize the performance of antenna 1. The closed loop is realized by using the feedback signals of antenna signals of different communication modules. In different scenarios, such as interference and shielding around the product, and other objects affecting the antenna resonant frequency, matching, directivity, etc., different tuning methods can be adopted according to different environments to control the working parameters of the antenna to achieve the optimal working parameters to meet the best signal transmission.

[0089] The following is a detailed description in conjunction with another embodiment.

[0090] Embodiment 2

[0091] An antenna tuning device provided in this embodiment includes multiple implementation units, each implementation unit corresponding to each implementation step in the above-mentioned embodiment 1.

[0092] Figure 4 is a schematic diagram of an optional antenna tuning device according to an embodiment of the present invention, such as Figure 4 As shown, the antenna tuning device may include: a signal receiving unit 41 , an antenna evaluation unit 42 , and an antenna tuning unit 43 .

[0093] Among them, the signal receiving unit 41 is used to receive feedback signals transmitted by M antenna units, wherein the feedback signal is generated after receiving the radio frequency signal transmitted by the target antenna unit, and N antenna units are deployed in the mobile communication terminal, each antenna unit corresponds to at least one communication frequency band, and the target antenna unit is any one of the first to Nth antenna units, N is a positive integer greater than 1, and M is greater than 0 and less than or equal to N.

[0094] The antenna evaluation unit 42 is used to evaluate the working state of the target antenna unit based on the feedback signal to obtain an evaluation result.

[0095] The antenna tuning unit 43 is used to output an adjustment instruction to the tuning unit when the evaluation result indicates that the working state has not reached the target state, wherein the adjustment instruction is used to adjust the current working parameters of the target antenna unit.

[0096] The antenna tuning device receives feedback signals transmitted by M antenna units through a signal receiving unit 41, evaluates the working state of the target antenna unit based on the feedback signal through an antenna evaluation unit 42, obtains an evaluation result, and outputs an adjustment instruction to the tuning unit through an antenna tuning unit 43 when the evaluation result indicates that the working state has not reached the target state, wherein the feedback signal is generated after receiving the radio frequency signal transmitted by the target antenna unit, and N antenna units are deployed in the mobile communication terminal, each antenna unit corresponds to at least one communication frequency band, and the target antenna unit is any one of the first to Nth antenna units, and the adjustment instruction is used to adjust the current working parameters of the target antenna unit. In this embodiment, a closed-loop tuning method can be adopted based on the current network environment and the surrounding environment of the terminal, and closed-loop processing can be achieved by using the feedback signals of different antennas to achieve the optimal effect of antenna radiation and the best performance of the terminal, thereby solving the technical problem that when an open-loop tuning strategy is used in the related art to tune the antenna of the communication terminal, the surrounding environment cannot be obtained, resulting in poor tuning effect.

[0097] Optionally, the antenna evaluation unit includes: an acquisition module, used to acquire the optimal operating parameters of the associated target antenna unit in the storage unit under the target state; an extraction module, used to extract the antenna state parameters of the target antenna unit in the feedback signal when transmitting the radio frequency signal; a parameter comparison module, used to compare the optimal operating parameters under the target state and the antenna state parameters of the target antenna unit, and evaluate the working state of the target antenna unit based on the comparison result to generate an evaluation result.

[0098] Optionally, the antenna tuning unit includes: a modification value calculation module, which is used to calculate the modification value of the antenna resonant frequency and the modification value of the antenna impedance when the evaluation result indicates that the working state has not reached the target state; a pattern modification module, which is used to determine the antenna pattern modification parameters based on the antenna pattern of the target antenna unit at the current moment; an instruction generation module, which is used to generate an adjustment instruction based on the modification value of the antenna resonant frequency, the modification value of the antenna impedance or the antenna pattern modification parameters, and output the adjustment instruction to the tuning unit corresponding to the target antenna unit.

[0099] Optionally, the antenna tuning device also includes: an abnormal working parameter acquisition unit, which is used to obtain abnormal working parameters and adjustment strategies corresponding to T types of antenna abnormal states in the storage unit when the evaluation result indicates that the target antenna unit is in an abnormal state, wherein T is a positive integer greater than 1; an antenna state parameter comparison unit, which is used to compare each abnormal working parameter with the antenna state parameter of the target antenna unit when transmitting a radio frequency signal, and confirm the type of abnormal state based on the comparison result; an instruction transmission unit, which is used to call the corresponding adjustment strategy based on the abnormal state type, and transmit the adjustment instruction containing the adjustment strategy to the tuning unit.

[0100] Optionally, the antenna tuning device also includes: a coupling processing unit, which is used to couple the RF signal to generate a feedback signal after the Mth antenna unit receives the RF signal transmitted by the target antenna unit before receiving the feedback signal transmitted by the M antenna units.

[0101] Optionally, the coupling unit is a three-port network, wherein the first end is connected to the antenna unit, the second end is connected to the communication unit, and the third end is connected to the main control end of the mobile communication terminal, and the coupling unit is connected in series in the communication link.

[0102] Optionally, the antenna tuning device further includes: a state tuning module, configured to adjust the state of the corresponding tuning unit based on the signal strength and phase difference of each antenna unit.

[0103] Optionally, the antenna tuning device also includes: a work maintaining unit, used to maintain the current working parameters of the target antenna unit and control the target antenna unit to continue communicating according to the current working parameters when the evaluation result indicates that the working state has reached the target state.

[0104] Optionally, the type of the target antenna unit may include a cellular communication antenna, and the type of the Mth antenna unit may be a wireless WiFi communication antenna, or may be other wireless communication antennas.

[0105] The antenna tuning device may further include a processor and a memory. The signal receiving unit 41, antenna evaluation unit 42, antenna tuning unit 43, etc. are all stored in the memory as program units. The processor executes the program units stored in the memory to implement corresponding functions.

[0106] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be provided, and dynamic tuning of the closed-loop antenna can be achieved by adjusting kernel parameters.

[0107] The above-mentioned memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash memory (fl ash RAM), and the memory includes at least one storage chip.

[0108] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is further provided, the computer-readable storage medium including a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the antenna tuning method of any one of the above-mentioned embodiments.

[0109] According to another aspect of an embodiment of the present invention, there is also provided an electronic device, comprising one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by one or more processors, the one or more processors implement the antenna tuning method of any one of the above-mentioned embodiments one.

[0110] The present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the antenna tuning method described in each embodiment of the present application.

[0111] The present application also provides a computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the antenna tuning method described in each embodiment of the present application are implemented.

[0112] Figure 5 FIG. 1 is a hardware structure block diagram of an electronic device (or mobile device) for executing an antenna tuning method according to an embodiment of the present invention. Figure 5 As shown, the electronic device may include one or more ( Figure 5 502a, 502b, ..., 502n are used to illustrate) a processor (the processor may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), and a memory 504 for storing data. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a keyboard, a power supply and / or a camera. A person skilled in the art can understand that Figure 5 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 5 More or fewer components as shown, or with Figure 5 Different configurations shown.

[0113] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0114] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0115] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0116] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0117] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0118] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0119] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An antenna tuning method, characterized in that: include: Receive feedback signals transmitted by M antenna units, wherein the feedback signal is generated after receiving a radio frequency signal transmitted by a target antenna unit, N antenna units are deployed in the mobile communication terminal, each antenna unit corresponds to at least one communication frequency band, the target antenna unit is any one of the first to Nth antenna units, N is a positive integer greater than 1, and M is greater than 0 and less than or equal to N; Based on the feedback signal, evaluating the working state of the target antenna unit to obtain an evaluation result; In a case where the evaluation result indicates that the working state has not reached the target state, an adjustment instruction is output to the tuning unit, wherein the adjustment instruction is used to adjust the current working parameters of the target antenna unit.

2. The method according to claim 1, characterized in that The evaluating the working state of the target antenna unit based on the feedback signal to obtain the evaluation result includes: Obtaining the optimal operating parameters associated with the target antenna unit in the target state in the storage unit; Extracting antenna state parameters of the target antenna unit in the feedback signal when transmitting a radio frequency signal; The optimal operating parameters under the target state and the antenna state parameters of the target antenna unit are compared, and the operating state of the target antenna unit is evaluated based on the comparison result to generate the evaluation result.

3. The method according to claim 1, characterized in that When the evaluation result indicates that the working state has not reached the target state, outputting an adjustment instruction to the tuning unit includes: When the evaluation result indicates that the working state has not reached the target state, calculating a modified value of the antenna resonant frequency and a modified value of the antenna impedance; Determining antenna pattern modification parameters based on the antenna pattern of the target antenna unit at the current moment; Based on the modified value of the antenna resonant frequency, the modified value of the antenna impedance or the antenna pattern modification parameter, the adjustment instruction is generated, and the adjustment instruction is output to the tuning unit corresponding to the target antenna unit.

4. The method according to claim 1, characterized in that Also includes: When the evaluation result indicates that the target antenna unit is in an abnormal state, abnormal operating parameters and adjustment strategies corresponding to T types of antenna abnormal states in the storage unit are obtained, where T is a positive integer greater than 1; comparing each of the abnormal operating parameters with the antenna state parameters of the target antenna unit when transmitting a radio frequency signal, and determining the type of abnormal state based on the comparison result; A corresponding adjustment strategy is retrieved based on the abnormal state type, and an adjustment instruction including the adjustment strategy is transmitted to the tuning unit.

5. The method according to claim 1, characterized in that Before receiving the feedback signals transmitted by the M antenna units, the method further includes: After the Mth antenna unit receives the radio frequency signal transmitted by the target antenna unit, the coupling unit performs coupling processing on the radio frequency signal to generate the feedback signal.

6. The method according to claim 5, characterized in that The coupling unit is a three-port network, wherein the first end is connected to the antenna unit, the second end is connected to the communication unit, and the third end is connected to the main control end of the mobile communication terminal. The coupling unit is connected in series in the communication link.

7. The method according to claim 1, characterized in that Also includes: When the evaluation result indicates that the working state has reached the target state, the current working parameters of the target antenna unit are maintained, and the target antenna unit is controlled to continue communicating according to the current working parameters.

8. A mobile communication terminal, characterized in that: include: N antenna units, including at least one type of antenna, where N is a positive integer greater than 1; A coupling unit, each coupling unit corresponds to one of the antenna units, and after receiving the radio frequency signal transmitted by the target antenna unit, the coupling unit performs coupling processing on the radio frequency signal, generates a feedback signal, and sends the feedback signal to the main control end; A main control end, executing the antenna tuning method according to any one of claims 1 to 7; The tuning unit adjusts the current working parameters of each antenna unit.

9. An antenna tuning device, characterized in that: include: A signal receiving unit, configured to receive feedback signals transmitted by M antenna units, wherein the feedback signal is generated after receiving a radio frequency signal transmitted by a target antenna unit, N antenna units are deployed in the mobile communication terminal, each antenna unit corresponds to at least one communication frequency band, the target antenna unit is any one of the first to Nth antenna units, N is a positive integer greater than 1, and M is greater than 0 and less than or equal to N; An antenna evaluation unit, configured to evaluate the working state of the target antenna unit based on the feedback signal to obtain an evaluation result; The antenna tuning unit is used to output an adjustment instruction to the tuning unit when the evaluation result indicates that the working state has not reached the target state, wherein the adjustment instruction is used to adjust the current working parameters of the target antenna unit.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the antenna tuning method according to any one of claims 1 to 7.

11. An electronic device, characterized in that: It includes one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the antenna tuning method described in any one of claims 1 to 7.

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