A control method of a radio frequency circuit and an apparatus thereof

Abstract

The embodiment of the present disclosure discloses a control method and device of a radio frequency circuit, which can be applied to the technical field of communication, wherein the method comprises: determining the mode of transmitting signals and receiving signals of the radio frequency circuit according to the working mode of the terminal device where the radio frequency circuit is located and the type of the radio frequency circuit. Thus, by multiplexing the radio frequency circuit in the terminal device, the detection function can be realized, so as to further enrich the functions of the terminal device without increasing the hardware burden of the terminal device.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a control method and apparatus for a radio frequency circuit. Background Technology

[0002] Typically, when performing wireless sensing and detection, terminal devices first emit electromagnetic waves. Objects in the path then reflect the signals back, and the terminal device determines the object's range, speed, angle, and so on by capturing the reflected signals. To enable wireless sensing and detection capabilities in terminal devices, circuitry and radar chips must be designed and installed, potentially placing pressure on the hardware deployment. Therefore, how to achieve wireless sensing and detection in terminal devices has become a pressing problem to be solved. Summary of the Invention

[0003] This disclosure provides a method and apparatus for controlling a radio frequency circuit, which can be applied to the field of communication technology.

[0004] In a first aspect, embodiments of this disclosure provide a control method for a radio frequency (RF) circuit, the method comprising: determining the mode of transmitting and receiving signals by the RF circuit based on the operating mode of the terminal device in which the RF circuit is located and the type of the RF circuit.

[0005] In this scheme, the method of transmitting and receiving signals by the RF circuit can be determined based on the operating mode of the terminal device and the type of the RF circuit. Therefore, by reusing the RF circuit in the terminal device, the detection function can be achieved, thereby further enriching the functionality of the terminal device without increasing its hardware burden.

[0006] Optionally, determining the method of transmitting and receiving signals by the radio frequency circuit based on the operating mode of the terminal device where the radio frequency circuit is located and the type of the radio frequency circuit includes:

[0007] In response to the terminal device operating in detection mode, the method by which the radio frequency circuit transmits detection signals and receives detection feedback signals is determined according to the type of radio frequency circuit.

[0008] Optionally, determining the method for the radio frequency circuit to transmit detection signals and receive detection feedback signals according to the type of radio frequency circuit includes:

[0009] When the transmitting circuit and the reflecting circuit in the radio frequency circuit use different antennas, it is determined that the radio frequency circuit uses different antennas to transmit detection signals and receive detection feedback signals.

[0010] Optionally, determining that the radio frequency circuit uses different antennas to transmit detection signals and receive detection feedback signals includes:

[0011] When the radio frequency circuit operates in the time division duplex (TDD) band within the first frequency range FR1, it is determined that the transmitting circuit is connected to the main antenna to transmit a detection signal, and the reflecting circuit is connected to the receiving diversity antenna to receive a detection feedback signal.

[0012] Optionally, the radio frequency circuit includes two radio frequency sub-circuits, each including a transmitting circuit and a reflecting circuit. Determining that the radio frequency circuit uses different antennas to transmit detection signals and receive detection feedback signals includes:

[0013] When the radio frequency circuit operates in the TDD band within the second frequency range FR2, the transmitting circuit in one radio frequency sub-circuit is connected to the corresponding antenna array to transmit a detection signal, and the reflecting circuit in another radio frequency sub-circuit is connected to the corresponding antenna array to receive a detection feedback signal.

[0014] Optionally, determining that the radio frequency circuit uses different antennas to transmit detection signals and receive detection feedback signals includes:

[0015] When the radio frequency circuit operates in the frequency division duplex (FDD) band within FR1, it is determined that the transmitting circuit in the radio frequency circuit is connected to the main antenna to transmit a detection signal, and the receiving diversity antenna in the radio frequency circuit is connected to the reflecting circuit to receive a detection feedback signal.

[0016] Optionally, determining the method of transmitting detection signals and receiving detection feedback signals by the radio frequency circuit according to the type of radio frequency circuit in the terminal device includes:

[0017] The radio frequency circuits are determined to use the same antenna to transmit detection signals and receive detection feedback signals, wherein the transmitting circuit for transmitting detection signals and the reflecting circuit for receiving detection feedback signals in the terminal device are connected by an isolation circuit.

[0018] Optionally, determining that the radio frequency circuit uses the same antenna to transmit the detection signal and receive the detection feedback signal includes:

[0019] When the radio frequency circuit operates in the TDD band within FR1 or the FDD band within FR1, it is determined that the transmitting circuit in the radio frequency circuit is connected to the main antenna through the isolation circuit to transmit a detection signal, and the reflecting circuit in the radio frequency circuit is connected to the main antenna through the isolation circuit to receive a detection feedback signal. The isolation circuit is used to isolate the transmitted signal generated by the reflecting circuit from the transmitting circuit, and to isolate the detection feedback signal received by the main antenna from the transmitting circuit.

[0020] Optionally, determining that the radio frequency circuit uses the same antenna to transmit the detection signal and receive the detection feedback signal includes:

[0021] When the radio frequency circuit operates in the TDD band within FR2, it is determined that the transmitting circuit in the radio frequency circuit is connected to the antenna unit through the isolation circuit to transmit a detection signal, and the reflecting circuit in the radio frequency circuit is connected to the antenna unit through the isolation circuit to receive a detection feedback signal.

[0022] Secondly, embodiments of this disclosure provide a communication device that implements some or all of the functions described in the first aspect above. For example, the communication device may have the functions of some or all of the embodiments in this disclosure, or it may have the functions of any one embodiment in this disclosure implemented individually. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0023] In one implementation, the communication device may include a transceiver module and a processing module, the processing module being configured to support the communication device in performing the corresponding functions described in the above method. The transceiver module supports communication between the communication device and other devices. The communication device may also include a storage module, coupled to the transceiver module and the processing module, which stores necessary computer programs and data for the communication device.

[0024] As an example, the processing module can be a processor, the transceiver module can be a transceiver or a communication interface, and the storage module can be a memory.

[0025] Thirdly, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the first aspect.

[0026] Fourthly, embodiments of this disclosure provide a communication device including a processor and a memory, the memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the first aspect above.

[0027] Fifthly, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor, which is used to execute the code instructions to cause the device to perform the method described in the first aspect above.

[0028] In a sixth aspect, embodiments of this disclosure provide a control system for a radio frequency circuit, the system including the communication device described in the second aspect, or the system including the communication device described in the third aspect, or the system including the communication device described in the fourth aspect, or the system including the communication device described in the fifth aspect.

[0029] In a seventh aspect, embodiments of the present invention provide a computer-readable storage medium for storing instructions for use, which, when executed, cause the method described in the first aspect to be implemented.

[0030] Eighthly, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0031] Ninthly, this disclosure provides a chip system including at least one processor and an interface for implementing the functions involved in the first aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing necessary computer programs and data. The chip system may be composed of chips or may include chips and other discrete devices.

[0032] In a tenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments or background art of this disclosure, the accompanying drawings used in the embodiments or background art of this disclosure will be described below.

[0034] Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure;

[0035] Figure 2 This is a schematic diagram of the structure of a terminal device provided in one embodiment of the present disclosure;

[0036] Figure 3 This is a schematic diagram of the structure of a terminal device provided in one embodiment of the present disclosure;

[0037] Figure 4 This is a schematic diagram of the structure of a terminal device provided in one embodiment of the present disclosure;

[0038] Figure 5 This is a schematic diagram of the structure of a terminal device provided in one embodiment of the present disclosure;

[0039] Figure 6This is a schematic diagram of the structure of a terminal device provided in one embodiment of the present disclosure;

[0040] Figure 7 This is a schematic diagram of the structure of a terminal device provided in one embodiment of the present disclosure;

[0041] Figure 8 This is a flowchart illustrating a control method for a radio frequency circuit according to another embodiment of this disclosure;

[0042] Figure 9 This is a flowchart illustrating a control method for a radio frequency circuit according to another embodiment of this disclosure;

[0043] Figure 10 This is a flowchart illustrating a control method for a radio frequency circuit according to another embodiment of this disclosure;

[0044] Figure 11 This is a schematic diagram of the structure of a communication device according to an embodiment of the present disclosure;

[0045] Figure 12 This is a schematic diagram of the structure of a communication device according to another embodiment of the present disclosure;

[0046] Figure 13 This is a schematic diagram of the structure of a chip according to an embodiment of the present disclosure. Attached image description:

[0048] 31-RF circuit; 32-Antenna unit; 33-Amplifier; 34-First filter; 35-Second filter; 41-RF circuit; 42-Antenna unit; 43-Switch unit; 44-First antenna array; 45-Second antenna array; 46-First switch; 47-Second switch; 48-RF circuit; 49-First RF sub-circuit; 410-Second RF sub-circuit; 411-First analog-to-digital converter; 412-First digital-to-analog converter; 413-First mixer; 414-First power divider; 415-Second power divider; 416-First phase shifter; 417-First amplifier 418-Second Amplifier; 419-Third Switch; 420-First Antenna Array; 421-Second Antenna Array; 422-Third Antenna Array; 423-Fourth Antenna Array; 424-Second Analog-to-Digital Converter; 425-Second Digital-to-Analog Converter; 426-Second Mixer; 427-Third Power Divider; 428-Fourth Power Divider; 429-Second Phase Shifter; 430-Third Amplifier; 431-Fourth Amplifier; 432-Fourth Switch; 433-Fifth Antenna Array; 434-Sixth Antenna Array; 435-Seventh Antenna Array; 436-Eighth Antenna Array; 5 1-RF circuit; 52-Antenna unit; 53-First switching unit; 54-Amplifier; 55-Filtering unit; 56-Second switching unit; 57-First filter; 58-Second filter; 59-Mixer; 61-RF circuit; 62-Switching unit; 63-First switch; 71-Switching unit; 72-First switch; 73-Second switch; 74-First amplifier; 75-First filter; 76-Fourth switch; 77-First circulator; 78-Third switch; 79-First receiver protector; 710-First mixer; 711-Second filter; 712-Second... Amplifier; 713-Sixth switch; 714-Second circulator; 715-Fifth switch; 716-Second receiver protector; 717-Second mixer; 718-Filter unit; 719-Analog-to-digital converter; 720-Digital-to-analog converter; 721-Third mixer; 722-First power divider; 723-Second power divider; 724-Third power divider; 725-First phase shifter; 726-Third amplifier; 727-Fourth amplifier; 728-Eighth switch; 729-Third circulator; 730-Seventh switch; 731-Third receiver protector; 732-Fourth mixer. Detailed Implementation

[0049] To facilitate understanding, the terminology used in this disclosure will be introduced first.

[0050] 1. Generally, according to the 3rd Generation Partner Project (3GPP) protocol, 5G frequencies can be divided into two bands: the first frequency range (FR1) and the second frequency range (FR2). The FR1 band ranges from 450 MHz to 6 GHz; the FR2 band ranges from 24.25 GHz to 52.6 GHz, and is also known as millimeter wave (mmWave).

[0051] 2. Duplex communication

[0052] Full-duplex communication can typically be divided by frequency or time; the former is called frequency division duplexing (FDD), and the latter is called time division duplexing (TDD).

[0053] In FDD, uplink and downlink use different frequency bands, but the uplink and downlink bandwidths are generally the same. In TDD, uplink and downlink use the same frequency band, and the uplink and downlink time within a frequency band can be adjusted as needed. Generally, the uplink and downlink time is divided into several time periods at fixed intervals, called time slots.

[0054] 3. Radio frequency circuit

[0055] In this disclosure, the radio frequency circuit in the terminal device can be a circuit used to transmit and receive radio frequency signals, or it can be a circuit used to modulate and transmit the transmitted signal, receive the signal, and demodulate the received signal.

[0056] 4. Antenna arrays, also known as phased arrays, are typically a group of antennas consisting of two or more antennas. These antennas achieve higher performance than a single antenna by combining signals.

[0057] In this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can indicate three cases: A alone, A and B simultaneously, and B alone. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0058] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, expressions such as "first," "second," etc., are completely interchangeable.

[0059] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous. To better understand the control method of a radio frequency circuit disclosed in the embodiments of this disclosure, the communication system to which the terminal device provided in the embodiments of this disclosure is applicable is described below.

[0060] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure. The communication system may include, but is not limited to, a network device and a terminal device. Figure 1 The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. Figure 1 The communication system shown is an example including a network device 11 and a terminal device 12.

[0061] It should be noted that the technical solutions of this disclosure can be applied to various communication systems. For example, long term evolution (LTE) systems, 5th generation (5G) mobile communication systems, 5G new radio (NR) systems, or other future new mobile communication systems.

[0062] The network device 11 in this embodiment is a network-side entity used for transmitting or receiving signals. For example, the network device 11 can be an evolved NodeB (eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. This disclosure does not limit the specific technology or device form used in the network device. The network device provided in this disclosure can be composed of a central unit (CU) and a distributed unit (DU). The CU can also be called a control unit. Using a CU-DU structure allows the protocol layer of a network device, such as a base station, to be separated. Some protocol layer functions are centrally controlled by the CU, while the remaining or all protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0063] In this disclosure, the terminal device 12 is a user-side entity used to receive or transmit signals, such as a mobile phone. The terminal device can also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device can be a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, and so on. This disclosure does not limit the specific technology or device form used in the terminal device.

[0064] It is understood that the communication system described in this disclosure is intended to more clearly illustrate the working environment of the terminal device in the non-probing mode, and does not constitute a limitation on the technical solutions provided in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in this disclosure are also applicable to similar technical problems.

[0065] The control method and apparatus for the radio frequency circuit provided in this disclosure will be described in detail below with reference to the accompanying drawings.

[0066] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this disclosure. Figure 2 As shown, the terminal device may include radio frequency circuits, control circuits, and antenna units.

[0067] The radio frequency circuit can be connected to the antenna unit.

[0068] In addition, the control circuit is connected to the radio frequency circuit and can be used to control the radio frequency circuit to transmit and receive signals according to the operating mode of the terminal device and the type of radio frequency circuit.

[0069] It should be noted that this disclosure does not limit the structure or specific implementation of the control circuit. Any circuit or structure that can control the way the radio frequency circuit of the terminal device transmits and receives signals is within the protection scope of this disclosure.

[0070] In addition, the terminal device can have multiple operating modes, such as detection mode or non-detection mode, etc., and this disclosure does not limit it.

[0071] The detection mode can be a mode in which the terminal device can emit a detection signal and receive a detection feedback signal reflected from an object, and then determine the object's range, speed, angle, etc., based on the received detection feedback signal. The non-detection mode can be any mode other than the detection modes mentioned above. This disclosure does not limit this.

[0072] Furthermore, there can be various types of radio frequency (RF) circuits. For example, the transmitting and reflecting circuits of an RF circuit can use different antennas, or the transmitting and reflecting circuits of an RF circuit can use the same antenna, etc. This disclosure does not limit this.

[0073] In this embodiment of the disclosure, when the terminal device is in different working modes, the method of transmitting and receiving signals by the radio frequency circuit can be determined according to the type of radio frequency circuit.

[0074] Optionally, the radio frequency (RF) circuit can be controlled to transmit and receive detection feedback signals, enabling the terminal device to perform detection functions using the RF circuit. Alternatively, the RF circuit can be controlled to transmit and receive RF signals, enabling the terminal device to perform non-detection functions using the RF circuit. Thus, by reusing the RF circuit in the terminal device, detection functions can be achieved, thereby further enriching the functionality of the terminal device without increasing its hardware burden.

[0075] By implementing the embodiments of this disclosure, the transmission and reception of signals by the radio frequency (RF) circuit can be controlled according to the operating mode of the terminal device and the type of RF circuit. Therefore, by reusing the RF circuit in the terminal device, a detection function can be achieved, thereby further enriching the functionality of the terminal device without increasing its hardware burden.

[0076] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this disclosure.

[0077] like Figure 3 As shown in (a), the terminal device may include a radio frequency circuit (31) and an antenna unit (32).

[0078] The radio frequency circuit (31) may include a transmitting circuit and a reflecting circuit.

[0079] In addition, the antenna unit (32) may include a main antenna and a receiving diversity antenna, wherein the transmitting circuit is connected to the main antenna and the reflecting circuit is connected to the receiving diversity antenna.

[0080] Depend on Figure 3 (a) As can be seen, in the embodiments of this disclosure, the transmitting circuit and the reflecting circuit in the terminal device are connected to different antennas respectively. When the terminal device is working in the TDD band within FR1, there will be no signal interference between the transmitting circuit and the reflecting circuit. Therefore, in this disclosure, the transmitting circuit and the reflecting circuit in the terminal device can be directly reused to realize the detection function.

[0081] Correspondingly, the control circuit can be specifically used to control the transmitting circuit in the radio frequency circuit to transmit the detection signal through the main antenna and control the reflecting circuit in the radio frequency circuit to receive the detection feedback signal through the receiving diversity antenna when it is determined that the terminal device is working in the detection mode and the radio frequency circuit is working in the TDD band within FR1.

[0082] It should be noted that the reflection circuit in this embodiment is the receiving circuit in the radio frequency circuit of the multiplexed terminal device.

[0083] It should be noted that, in Figure 3In the schematic diagram shown in (a), the control circuit is not shown. Its implementation principle and specific manifestation can be referred to the description of other embodiments of this disclosure, and will not be repeated here.

[0084] Furthermore, in actual use, the schematic diagram in the terminal device can be adjusted as needed.

[0085] For example, in such Figure 3 In the schematic diagram shown in (b), the transmitting circuit is connected to the amplifier (33), the amplifier (33) is connected to the first filter (34), and then to the main antenna. The receiving diversity antenna is connected to the second filter (35), and the second filter (35) is connected to the reflection circuit.

[0086] Depend on Figure 3 (b) It can be seen that when the terminal device is operating in the detection mode and the radio frequency circuit is operating in the TDD band within FR1, the detection signal can be generated by the transmitting circuit, and then input to the main antenna through the amplifier (33) and the first filter (34). The main antenna outputs the detection signal for transmission. When receiving the detection feedback signal, it is first input to the reflection circuit through the receiving diversity antenna through the second filter (35), and the reflection circuit can receive the detection feedback signal. Thus, by multiplexing the transmitting circuit and the reflection circuit of the radio frequency circuit, the detection function of the terminal device can be realized.

[0087] It should be noted that the reflection circuit in this embodiment is a receiving circuit in a multiplexed terminal device.

[0088] It should be noted that, as Figure 3 (b) The control circuit is not shown in the schematic diagram. Its implementation principle and specific manifestation can be referred to the description of other embodiments of this disclosure, and will not be repeated here.

[0089] It should be noted that in actual use, the main antenna and each receiving diversity antenna can be adjusted as needed, and this disclosure does not limit this.

[0090] By implementing the embodiments of this disclosure, when the terminal device operates in detection mode and the radio frequency circuit operates in the TDD band within FR1, the transmitting circuit in the radio frequency circuit can be controlled to transmit a detection signal through the main antenna, and the reflecting circuit in the radio frequency circuit can be controlled to receive the detection feedback signal through the receiving diversity antenna. Thus, by reusing the radio frequency circuit in the terminal device, the detection function can be realized, thereby further enriching the functionality of the terminal device without increasing its hardware burden.

[0091] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this disclosure.

[0092] like Figure 4 As shown in (a), the radio frequency circuit (41) in the terminal device may include a transmitting circuit and a reflecting circuit, and the antenna unit (42) may include two antenna arrays, such as a first antenna array (44) and a second antenna array (45).

[0093] In addition, the first connection terminal (1) of the first switch (46) in the switching unit (43) is connected to the first antenna array (44), the second connection terminal (2) of the first switch (46) is connected to the transmitting circuit in the radio frequency circuit, and the third connection terminal (3) of the first switch (46) is connected to the reflecting circuit in the radio frequency circuit.

[0094] In addition, the first connection terminal (1) of the second switch (47) in the switching unit (43) is connected to the second antenna array (45), the second connection terminal (2) of the second switch (47) is connected to the transmitting circuit, and the third connection terminal (3) of the second switch (47) is connected to the reflecting circuit.

[0095] It should be noted that the reflection circuit in this embodiment is a receiving circuit in a multiplexed terminal device.

[0096] It should be noted that, in Figure 4 In the schematic diagram shown in (a), the control circuit is not shown. Its implementation principle and specific manifestation can be referred to the description of other embodiments of this disclosure, and will not be repeated here.

[0097] Depend on Figure 4 (a) It is known that in the embodiments of this disclosure, the transmitting circuit and the reflecting circuit in the terminal device are connected to different antenna arrays respectively. That is, when the terminal device is working in the TDD band within FR2, there will be no signal interference between the transmitting circuit and the reflecting circuit. Therefore, in this disclosure, when implementing the detection function, the transmitting circuit and the reflecting circuit in the terminal device can be directly reused.

[0098] Correspondingly, the control circuit can be specifically used to connect the first connection terminal (1) of the first switch (46) to the second connection terminal (2) when it is determined that the terminal device is working in the detection mode and the radio frequency circuit is working in the TDD band within the second frequency range FR2, and to connect the first connection terminal (1) of the second switch (47) to the third connection terminal (3). That is, the transmitting circuit is connected to the first antenna array (44) through the first switch (46) to transmit the detection signal; the reflecting circuit is connected to the second antenna array (45) through the second switch (47) to receive the detection feedback signal.

[0099] Alternatively, the control circuit can also connect the first connection terminal (1) of the second switch (47) to the second connection terminal (2) and connect the first connection terminal (1) of the first switch (46) to the third connection terminal (3) when it is determined that the terminal device is operating in the detection mode and the radio frequency circuit is operating in the TDD band within FR2. That is, the transmitting circuit is connected to the second antenna array (45) through the second switch (47) to transmit the detection signal; the reflecting circuit is connected to the first antenna array (44) through the first switch (46) to receive the detection feedback signal.

[0100] Furthermore, in actual use, the actual circuit diagram can be adjusted as needed.

[0101] It is understandable that an antenna array can have multiple elements, for example, in... Figure 4 In the schematic diagram shown in (b), the radio frequency circuit (48) may include a first radio frequency sub-circuit (49) and a second radio frequency sub-circuit (410), which may be symmetrical circuits. In addition, the first antenna array and the second antenna array each have four antenna elements.

[0102] The baseband processing circuit in the first RF sub-circuit (49) can be connected to the first analog-to-digital converter (ADC) (411) and the first digital-to-analog converter (DAC) respectively. The DAC (412) is connected, the first ADC (411) and the first DAC (412) are then connected to the first mixer (413) respectively. The first mixer (413) is connected to the connection terminal (1) of the first power divider (414). The connection terminal (2) of the first power divider (414) is connected to the connection terminal (1) of the second power divider (415). The connection terminal (2) of the second power divider (415) is connected to the first phase shifter (416). The first phase shifter (416) is connected to the first amplifier (417) and the second amplifier (418) respectively. The other end of the first amplifier (417) is connected to the third connection terminal (3) of the third switch (419). The other end of the second amplifier (418) is connected to the second connection terminal (2) of the third switch (419). The first connection terminal (1) of the third switch (419) is connected to the first antenna element (420) in the first antenna array. The antenna elements in the first antenna array are the first antenna element (420), the second antenna element (421), the third antenna element (422), and the fourth antenna element (423).

[0103] It is understandable that the connection terminals (3) and (2) of the second power divider (415) have the same subsequent connection circuits; correspondingly, the connection terminals (3) and (2) of the first power divider (414) have the same subsequent connection circuits, which will not be repeated here.

[0104] In addition, the baseband processing circuit in the second RF sub-circuit (410) can be connected to the second ADC (424) and the second DAC (425) respectively. The second ADC (424) and the second DAC (425) are then connected to the second mixer (426) respectively. The second mixer (426) is connected to the connection terminal (1) of the third power divider (427). The connection terminal (2) of the third power divider (427) is connected to the connection terminal (1) of the fourth power divider (428). The connection terminal (2) of the fourth power divider (428) is connected to the connection terminal (1) of the fourth power divider (428). Terminal (2) is connected to the second phase shifter (429), which is connected to the third amplifier (430) and the fourth amplifier (431). The other end of the third amplifier (430) is connected to the third connection terminal (3) of the fourth switch (432), and the other end of the fourth amplifier (431) is connected to the second connection terminal (2) of the fourth switch (432). The first connection terminal (1) of the fourth switch (432) is connected to the fifth antenna element (433) in the second antenna array. The antenna elements in the second antenna array are the fifth antenna element (433), the sixth antenna element (434), the seventh antenna element (435), and the eighth antenna element (436).

[0105] It is understandable that the subsequent connection circuits of the connection terminal (3) and connection terminal (2) of the fourth power divider (428) are the same; correspondingly, the subsequent connection circuits of the connection terminal (3) and connection terminal (2) of the third power divider (427) are the same, which will not be repeated here.

[0106] Depend on Figure 4(b) It can be seen that when the terminal device is working in the detection mode and the radio frequency circuit is working in the TDD band within FR2, the first connection terminal (1) and the second connection terminal (2) of the third switch (419) can be connected to add the first local oscillator signal (lo1) into the first mixer (413). After passing through the first power divider (414), the second power divider (415), the first phase shifter (416) and the second amplifier (418), the detection signal is transmitted through the first antenna array (420). The first connection terminal (1) and the third connection terminal (3) of the fourth switch (432) can be connected, so that the detection feedback signal reflected by the object can be processed by the fifth antenna array (433), the third amplifier (430), the second phase shifter (429), the fourth power divider (428), and the third power divider (427), and processed with the second local oscillator signal (local oscillator signal 2, lo2) in the second mixer (426), and then processed by the second ADC (424), the second DAC (425) and the baseband processing circuit to obtain the detection feedback signal.

[0107] Alternatively, when the terminal device is operating in the detection mode and the radio frequency circuit is operating in the TDD band within FR2, the first connection terminal (1) and the second connection terminal (2) of the fourth switch (432) are connected to transmit a detection signal, and the first connection terminal (1) and the second connection terminal (3) of the third switch (419) are connected to receive a detection feedback signal.

[0108] It should be noted that in actual use, the first antenna array, the second antenna array, and other devices can be adjusted as needed, and this disclosure does not limit this.

[0109] It should be noted that, in cases such as Figure 4 (b) shows a schematic diagram in which the control circuit is not shown. Its implementation principle and specific manifestation can be referred to the description of other embodiments of this disclosure, and will not be repeated here.

[0110] By implementing the embodiments of this disclosure, when the terminal device operates in detection mode and the radio frequency circuit operates in the TDD band within FR2, the transmitting circuit in the radio frequency circuit can be connected to one antenna array and the reflecting circuit can be connected to another antenna array. Therefore, by reusing the radio frequency circuit in the terminal device, the detection function can be achieved, thereby further enriching the functionality of the terminal device without increasing its hardware burden.

[0111] Please see Figure 5 , Figure 5 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this disclosure.

[0112] like Figure 5 As shown in (a), the radio frequency circuit (51) in the terminal device may include a transmitting circuit, a reflecting circuit, and a receiving circuit, and the antenna unit (52) may include a main antenna and a receiving diversity antenna. The first connection terminal (1) of the first switching unit (53) is connected to the receiving diversity antenna, the second connection terminal (2) of the first switching unit (53) is connected to the receiving circuit in the radio frequency circuit, and the third connection terminal (3) of the first switching unit (53) is connected to the reflecting circuit in the radio frequency circuit. The main antenna is connected to the transmitting circuit in the radio frequency circuit.

[0113] Depend on Figure 5 (a) As can be seen, in this embodiment of the present disclosure, since the radio frequency circuit operates in the FDD band within FR1, different frequency bands are required for transmission and reception. Therefore, the receiving circuit cannot be directly reused, but the receiving diversity antenna in the radio frequency circuit can be reused.

[0114] Accordingly, the control circuit can be specifically used to connect the first connection terminal (1) and the third connection terminal (3) of the first switching unit (53) when it is determined that the terminal device is working in the detection mode and the radio frequency circuit is working in the FDD band within FR1. Thus, the transmitting circuit can transmit the detection signal through the main antenna, and the receiving diversity antenna passes through the switching unit to the reflection circuit, that is, the reflection circuit receives the detection feedback signal through the receiving diversity antenna.

[0115] Alternatively, the control circuit can be specifically used to connect the first connection terminal (1) and the second connection terminal (2) of the first switching unit (53) when it is determined that the terminal device is working in non-detection mode. Thus, the transmitting circuit can transmit radio frequency signals through the main antenna, and the receiving circuit can receive radio frequency signals through the receiving diversity antenna, etc.

[0116] It should be noted that, in cases such as Figure 5 In the schematic diagram shown in (a), the control circuit is not shown. Its implementation principle and specific manifestation can be referred to the description of other embodiments of this disclosure, and will not be repeated here.

[0117] Therefore, by reusing the transmitting circuit and receiving diversity antenna in the radio frequency circuit of the terminal device, the detection function can be realized, thereby further enriching the functions of the terminal device without increasing the hardware burden of the terminal device.

[0118] Furthermore, in actual use, the actual circuit diagram can be adjusted as needed.

[0119] For example, in such Figure 5In the schematic diagram shown in (b), since the RF circuit operates in the FDD band within FR1, different frequency bands are required for transmission and reception. Therefore, the reflection circuit cannot directly reuse the receiving circuit in the RF circuit, but it can reuse the receiving diversity antenna in the RF circuit.

[0120] The transmitting circuit can be connected to one end of the amplifier (54), and the other end of the amplifier (54) is connected to the filter unit (55). The filter unit (55) is connected to the main antenna. The receiving diversity antenna is connected to the first connection terminal (1) of the second switching unit (56). The second connection terminal (2) of the second switching unit (56) is connected to the receiving circuit through the first filter (57). The third connection terminal (3) of the second switching unit (56) is connected to the second filter (58), and then connected to the reflection circuit in the radio frequency circuit through the mixer (59).

[0121] Depend on Figure 5 (b) It can be seen that when the terminal device is working in the detection mode and the radio frequency circuit is working in the FDD band within FR1, the detection signal can be transmitted by connecting the transmitting circuit to the main antenna. When the first connection terminal (1) and the third connection terminal (3) of the second switching unit (56) are connected, the detection feedback signal enters from the receiving diversity antenna. After being processed by the second filter (58) and the mixer (59), it can be output to the reflection circuit, thereby realizing the reception of the detection feedback signal.

[0122] When the terminal device is working in non-detection mode, it can transmit radio frequency signals through the transmitting circuit and the main antenna. When it is necessary to receive radio frequency signals, the first connection terminal (1) of the second switching unit (56) can be connected to the second connection terminal (2) to receive radio frequency signals.

[0123] In practical use, the main antenna and receiving diversity antenna can be adjusted as needed, and this disclosure does not limit this.

[0124] It should be noted that, in cases such as Figure 5 (b) shows a schematic diagram in which the control circuit is not shown. Its implementation principle and specific manifestation can be referred to the description of other embodiments of this disclosure, and will not be repeated here.

[0125] By implementing the embodiments of this disclosure, when the terminal device operates in detection mode and the radio frequency circuit operates in the FDD band within FR1, the connection between the reflection circuit and the receiving diversity antenna can be controlled. Therefore, by reusing the radio frequency circuit in the terminal device, the detection function can be achieved, thereby further enriching the functionality of the terminal device without increasing its hardware burden.

[0126] Please see Figure 6 , Figure 6This is a schematic diagram of the structure of a terminal device provided in an embodiment of this disclosure.

[0127] like Figure 6 As shown, the radio frequency circuit (61) in the terminal device may include a transmitting circuit, a reflecting circuit and an isolation circuit.

[0128] In addition, the transmitting circuit is connected to the first end (1) of the isolation circuit, the second end (2) of the isolation circuit is connected to the first connection end (1) of the first switch (63) in the switching unit (62), and the third end (3) of the isolation circuit is connected to the reflecting circuit.

[0129] In addition, the second connection terminal (2) of the first switch (63) in the switch unit (62) is connected to the antenna unit.

[0130] It is understood that the switching unit (62) may also contain other switches, and this disclosure does not limit this.

[0131] It should be noted that the other connection terminals of the first switch (63) in this disclosure are not shown. Their connection principle can be referred to the description of other embodiments of this disclosure, and will not be repeated here.

[0132] The isolation circuit can be used to isolate the transmitted signals generated by the reflection circuit and the transmitting circuit, and to isolate the received detection feedback signals from the transmitting circuit.

[0133] Optionally, the isolation circuit can be a circulator, a hybrid connector, or a bidirectional coupler, etc., and this disclosure does not limit it.

[0134] Depend on Figure 6 As can be seen, in the embodiments of this disclosure, the transmitting circuit and the reflecting circuit in the radio frequency circuit use the same antenna. In order to avoid signal interference between the transmitting circuit and the reflecting circuit, an isolation circuit can be added to the radio frequency circuit in this disclosure.

[0135] Accordingly, the control circuit can be specifically used to control the connection between the first connection terminal (1) and the second connection terminal (2) in the first switch (63) when it is determined that the terminal device is working in the detection mode.

[0136] Depend on Figure 6It can be seen that when the terminal device is working in the detection mode, the first connection terminal (1) of the first switch (63) can be connected to the second connection terminal (2), so that the detection signal generated by the transmitting circuit can be input from the first terminal (1) of the isolation circuit, and then output from the second terminal (2) of the isolation circuit, and then output through the antenna, thus realizing the transmission of the detection signal. When receiving the feedback detection signal, it first passes through the antenna unit and the first switch (63), and is input to the isolation circuit from the second terminal (2), and then input to the reflection circuit from the third terminal (3) of the isolation circuit. That is, the reflection circuit receives the detection feedback signal from the third terminal (3) of the isolation circuit, thus realizing the detection function of the terminal device.

[0137] It should be noted that, as Figure 6 The control circuit is not shown in the schematic diagram. Its implementation principle and specific manifestation can be referred to the description of other embodiments of this disclosure, and will not be repeated here.

[0138] By implementing the embodiments of this disclosure, when the terminal device is operating in detection mode, the transmission of detection signals and the reception of detection feedback signals can be achieved by adding an isolation circuit and controlling the connection between the first and second connection terminals of the first switch. Thus, the detection function can be realized by reusing part of the radio frequency circuitry in the terminal device, without significantly impacting the hardware burden of the terminal device, further enriching its functionality.

[0139] Please see Figure 7 , Figure 7 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this disclosure.

[0140] like Figure 7 As shown in (a), the terminal device may include a transmitting circuit, a reflecting circuit, an isolation circuit, and a receiving circuit.

[0141] In addition, the switching unit (71) may include a first switch (72) and a second switch (73).

[0142] In the switching unit (71), the second connection terminal (2) of the first switch (72) is connected to the antenna unit. The first connection terminal (1) of the first switch (72) in the switching unit is connected to the second terminal (2) of the isolation circuit, the third connection terminal (3) of the first switch (72) is connected to the receiving circuit, the third terminal (3) of the isolation circuit is connected to the reflecting circuit, the first terminal (1) of the isolation circuit is connected to the second connection terminal (2) of the second switch (73), the transmitting circuit is connected to the first connection terminal (1) of the second switch (73), and the third connection terminal (3) of the second switch (73) is connected to the fourth connection terminal (4) of the first switch (72).

[0143] Depend on Figure 7(a) As can be seen, in order to avoid signal interference between the transmitting circuit and the reflecting circuit in the embodiments of this disclosure, an isolation circuit can be added therein, and then part of the radio frequency circuit of the terminal device can be reused to realize the detection function of the terminal device.

[0144] Accordingly, the control circuit is specifically used to connect the first connection terminal (1) of the second switch (73) to the second connection terminal (2) of the second switch (73) when the terminal device is operating in the detection mode and the radio frequency circuit is operating in the TDD band within FR1, or the terminal device is operating in the detection mode and the radio frequency circuit is operating in the FDD band within FR1, or the terminal device is operating in the detection mode and the radio frequency circuit is operating in the TDD band within FR2, and to connect the second connection terminal (2) of the first switch (72) to the first connection terminal (1) of the first switch (72).

[0145] Depend on Figure 7 (a) It is known that when the terminal device is operating in the detection mode and the radio frequency circuit is operating in the TDD band within FR1, or when the terminal device is operating in the detection mode and the radio frequency circuit is operating in the FDD band within FR1, or when the terminal device is operating in the detection mode and the radio frequency circuit is operating in the TDD band within FR2, the first connection terminal (1) in the second switch (73) can be connected to the second connection terminal (2) in the second switch (73), and the second connection terminal (2) in the first switch (72) can be connected to the first connection terminal (1) in the first switch (72). Thus, the transmitting circuit is connected to the first terminal (1) of the isolation circuit through the second switch (73), and outputs through the second terminal (2) of the isolation circuit, and is connected to the antenna unit through the first connection terminal (1) and the second connection terminal (2) of the first switch (72), thereby transmitting the detection signal. The feedback detection signal passes through the antenna unit and the first switch (72), and is input to the isolation circuit through the second terminal (2) of the isolation circuit. Then it is output to the reflection circuit through the third terminal (3) of the isolation circuit. That is, the reflection circuit receives the detection feedback signal from the third terminal (3) of the isolation circuit, thereby realizing the detection function of the terminal device.

[0146] Alternatively, when the terminal device is operating in non-detection mode, the first connection terminal (1) of the second switch (73) can be connected to the third connection terminal (3) of the second switch (73), and the second connection terminal (2) of the first switch (72) can be connected to the fourth connection terminal (4) of the first switch (72). Thus, the transmitting circuit is connected to the antenna unit through the second switch (73) and the first switch (72), thereby transmitting radio frequency signals. When receiving radio frequency signals, the input can be from the antenna unit, and after passing through the second connection terminal (2) and the third connection terminal (3) of the first switch (72), it can reach the receiving circuit, thereby receiving the radio frequency signals.

[0147] Furthermore, in actual use, the actual circuit diagram can be adjusted as needed.

[0148] Optionally, the isolation circuit can be a circulator, a hybrid connector, or a bidirectional coupler, etc., and this disclosure does not limit it.

[0149] Optionally, the radio frequency circuit may also include a receiver protector, wherein one end of the receiver protector can be connected to the reflection circuit, and the other end of the receiver protector can be connected to the third terminal of the isolation circuit. In this embodiment of the present disclosure, by using a receiver protector, the signal from the transmitting circuit can be effectively prevented from being blocked by the reflection circuit due to insufficient isolation.

[0150] It should be noted that, as Figure 7 In the schematic diagram shown in (a), the control circuit is not shown. Its implementation principle and specific manifestation can be referred to the description of other embodiments of this disclosure, and will not be repeated here.

[0151] For example, in such Figure 7 In the schematic diagram shown in (b), the isolation circuit is a circulator. The transmitting circuit is connected to one end of the first amplifier (74), the other end of the first amplifier (74) is connected to the first filter (75), the other end of the first filter (75) is connected to the first connection terminal (1) of the fourth switch (76), the second connection terminal (2) of the fourth switch (76) is connected to the first end (1) of the first circulator (77), the third connection terminal (3) of the fourth switch (76) is connected to the fourth connection terminal (4) of the third switch (78), the second end (2) of the first circulator (77) is connected to the first connection terminal (1) of the third switch (78), the third end (3) of the first circulator (77) is connected to one end of the first receiver protector (79), the other end of the first receiver protector (79) is connected to the first mixer (710), and then the first mixer (710) is connected to the reflection circuit. The second connection terminal (2) of the third switch (78) is connected to the main antenna, and the third connection terminal (3) of the third switch (78) is connected to the second filter (711), and then connected to the receiving circuit.

[0152] Depend on Figure 7 (b) It can be seen that when the terminal device is operating in the detection mode and the radio frequency circuit is operating in the TDD band within FR1, the first connection terminal (1) of the fourth switch (76) can be connected to the second connection terminal (2) of the fourth switch (76), and the second connection terminal (2) of the third switch (78) can be connected to the first connection terminal (1) of the third switch (78). Thus, the detection signal can be transmitted by first amplifier (74), first filter (75) and fourth switch (76) of the transmitting circuit, input from the first terminal (1) of the first circulator (77), output from the second terminal (2), and then connected to the main antenna through the third switch (78). When receiving the feedback detection signal, it first passes through the main antenna and the third switch (78) and is input to the second terminal (2) of the first circulator (77). Then it is output from the third terminal (3) of the first circulator (77) and processed by the first receiver protector (79) and the first mixer (710) to reach the reflection circuit, thereby realizing the reception of the detection feedback signal.

[0153] Alternatively, when the terminal device is operating in non-detection mode, the first connection terminal (1) of the fourth switch (76) can be connected to the third connection terminal (3) of the fourth switch (76), and the second connection terminal (2) of the third switch (78) can be connected to the fourth connection terminal (4) of the third switch (78). Thus, the transmitting circuit can first pass through the first amplifier (74), the first filter (75), and the fourth switch (76), then be input through the third terminal (3) of the first circulator (77), output through the fourth terminal (4), and then be connected to the main antenna through the third switch (78) to transmit the radio frequency signal. When receiving the radio frequency signal, it can be input through the main antenna, processed by the second connection terminal (2) and the third connection terminal (3) of the third switch (78) and the second filter (711), and then input to the receiving circuit to realize the reception of the radio frequency signal.

[0154] It should be noted that, as Figure 7 (b) shows a schematic diagram in which the control circuit is not shown. Its implementation principle and specific manifestation can be referred to the description of other embodiments of this disclosure, and will not be repeated here.

[0155] Alternatively, the schematic diagram of the terminal device in the actual implementation process can also be as follows: Figure 7 As shown in (c).

[0156] In such Figure 7In the schematic diagram shown in (c), the isolation circuit is a circulator. The transmitting circuit is connected to one end of the second amplifier (712), the other end of the second amplifier (712) is connected to the first connection terminal (1) of the sixth switch (713), the second connection terminal (2) of the sixth switch (713) is connected to the first end (1) of the second circulator (714), the third connection terminal (3) of the sixth switch (713) is connected to the third connection terminal (3) of the fifth switch (715), the second end (2) of the second circulator (714) is connected to the first connection terminal (1) of the fifth switch (715), the third end (3) of the second circulator (714) is connected to one end of the second receiver protector (716), the other end of the second receiver protector (716) is connected to the second mixer (717), and then the second mixer (717) is connected to the reflection circuit. The second connection terminal (2) of the fifth switch (715) is connected to the filter unit (718), the filter unit (718) is connected to the main antenna, and the filter unit (718) can also be connected to the receiving circuit.

[0157] Depend on Figure 7 (c) It can be seen that when the terminal device is working in the detection mode and the radio frequency circuit is working in the FDD band within FR1, the first connection terminal (1) in the sixth switch (713) can be connected to the second connection terminal (2) in the sixth switch (713), and the second connection terminal (2) in the fifth switch (715) can be connected to the first connection terminal (1) in the fifth switch (715). Thus, the detection signal can be transmitted by first passing through the second amplifier (712) and the sixth switch (713) of the transmitting circuit, then through the first terminal (1) of the second circulator (714), and through the second terminal (2) of the second circulator, and then through the fifth switch (715) and the filter unit (718) to the antenna unit. When receiving the feedback detection signal, it first passes through the antenna unit, the filter unit (718) and the fifth switch (715) and is input to the second terminal (2) of the second circulator (714). Then it is output from the third terminal (3) of the second circulator (714) and processed by the second receiver protector (716) and the second mixer (717) to reach the reflection circuit, thereby realizing the reception of the detection feedback signal.

[0158] Alternatively, when the terminal device is operating in non-detection mode, the first connection terminal (1) of the sixth switch (713) can be connected to the third connection terminal (3) of the sixth switch (713), and the second connection terminal (2) of the fifth switch (715) can be connected to the fourth connection terminal (4) of the fifth switch (715). Thus, the radio frequency signal can be transmitted by first passing through the second amplifier (712) and the sixth switch (713) of the transmitting circuit, then through the third terminal (3) of the second circulator (714), and outputting from the fourth terminal (4), and then through the fifth switch (715), the filter unit (718) and the antenna unit. When receiving the radio frequency signal, it can be input from the antenna unit, passed through the filter unit (718), and input to the receiving circuit to realize the reception of the radio frequency signal.

[0159] It should be noted that, as Figure 7 In the schematic diagram shown in (c), the control circuit is not shown. Its implementation principle and specific manifestation can be referred to the description of other embodiments of this disclosure, and will not be repeated here.

[0160] Alternatively, the schematic diagram of the terminal device in the actual implementation process can also be as follows: Figure 7 As shown in (d).

[0161] In such Figure 7In the schematic diagram shown in (d), the isolation circuit is a circulator. The baseband processing circuit can be connected to the ADC (719) and DAC (720) respectively. The ADC (719) and DAC (720) are then connected to the third mixer (721). The third mixer (721) is connected to the connection terminal (1) of the first power divider (722). The connection terminal (2) of the first power divider (722) is connected to the connection terminal (1) of the second power divider (723). The connection terminal (3) of the first power divider (722) is connected to the connection terminal (1) of the third power divider (724). The connection terminal (2) of the second power divider (723) is connected to the first phase shifter (725). The first phase shifter (725) is connected to the third amplifier (726) and the fourth amplifier respectively. (727) is connected. One end of the fourth amplifier (727) is connected to the first connection terminal (1) of the eighth switch (728). The second connection terminal (2) of the eighth switch (728) is connected to the first end (1) of the third circulator (729). The third connection terminal (3) of the eighth switch (728) is connected to the fourth connection terminal (4) of the seventh switch (730). The connection terminal (2) of the third circulator (729) is connected to the first connection terminal (1) of the seventh switch (730). The connection terminal (3) of the third circulator (729) is connected to one end of the third receiver protector (731). The other end of the third receiver protector (731) is connected to the fourth mixer (732), and then connected to the reflection circuit. The second connection terminal (2) of the seventh switch (730) is connected to the antenna unit. The third connection terminal (3) of the seventh switch (730) is connected to the other end of the third amplifier (726).

[0162] In addition, the subsequent connection circuits of the connection terminal (3) and connection terminal (2) of the second power divider (723) are the same; correspondingly, the connection terminal (2) and connection terminal (3) of the third power divider (724) are the same as the subsequent connection circuits of the connection terminal (2) and connection terminal (3) of the second power divider (723), which will not be described again here.

[0163] Depend on Figure 7(d) It can be seen that when the terminal device is working in the detection mode and the radio frequency circuit is working in the TDD band within FR2, the first connection terminal (1) in the eighth switch (728) can be connected to the second connection terminal (2) in the eighth switch (728), and the second connection terminal (2) in the seventh switch (730) can be connected to the first connection terminal (1) in the seventh switch (730). Thus, the detection signal can first pass through the baseband processing circuit, ADC, DAC, and then be processed by the third mixer (721) along with the local oscillator signal (lo1). After that, it is processed by the first power divider (722), the second power divider (723), and the first phase shifter (725). Then, it is connected to the first connection terminal (1) of the eighth switch (728) through the fourth amplifier (727). After that, it is input from the second connection terminal (2) of the eighth switch (728) to the connection terminal (1) of the third circulator (729). Then, it is connected to the seventh switch (730) through the connection terminal (2) of the third circulator (729) and output through the antenna unit, thereby realizing the transmission of the detection signal. When receiving the feedback detection signal, it first passes through the antenna unit, the second connection terminal (2) of the seventh switch (730), and the first connection terminal (1), and is input to the second terminal (2) of the third circulator (729). Then it is output from the third terminal (3) of the third circulator (729), and after being processed by the third receiver protector (731) and the fourth mixer (732), it reaches the reflection circuit, thereby realizing the reception of the detection feedback signal.

[0164] Alternatively, when the terminal device is operating in non-detection mode, the first connection terminal (1) in the eighth switch (728) can be connected to the third connection terminal (3) in the second switch (728), and the second connection terminal (2) in the seventh switch (730) can be connected to the fourth connection terminal (4) in the seventh switch (730). Therefore, when it is necessary to transmit radio frequency signals, the signal can first be processed by the baseband processing circuit, ADC (719), and DAC (720), and then the local oscillator signal (lo1) is added to the third mixer (721). After that, it is processed by the first power divider (722), the second power divider (723), and the first phase shifter (725). Then, it is connected to the first connection terminal (1) of the eighth switch (728) through the fourth amplifier (727). Then, it is input from the third connection terminal (3) of the eighth switch (728) to the fourth connection terminal (4) of the seventh switch (730), and then connected to the antenna unit through the second connection terminal (2) of the seventh switch (730), so that radio frequency signals can be transmitted. When it is necessary to receive radio frequency signals, the second connection terminal (2) of the seventh switch (730) can be connected to the third connection terminal (3). After processing by the third amplifier (726), the signal is input to the first phase shifter (725). Then, after processing by the second power divider (723), the first power divider (722), the third mixer (721), the ADC (719), the DAC (720), and the baseband processing circuit, the radio frequency signal can be received.

[0165] It should be noted that, in cases such as Figure 7 In the schematic diagram shown in (d), the control circuit is not shown. Its implementation principle and specific manifestation can be referred to the description of other embodiments of this disclosure, and will not be repeated here.

[0166] By implementing the embodiments of this disclosure, when the terminal device is operating in detection mode, an isolation circuit can be added, and the connection status of each connection terminal in the first and second switches can be controlled, thereby enabling the transmission of detection signals and the reception of detection feedback signals. This allows for the reuse of some radio frequency circuitry in the terminal device to achieve the detection function without significantly impacting the hardware load of the terminal device, further enriching its functionality.

[0167] Please see Figure 8 , Figure 8 This is a flowchart illustrating a control method for a radio frequency circuit provided in an embodiment of this disclosure. Figure 8 As shown, the method may include, but is not limited to, the following steps:

[0168] Step 81: Determine the method of transmitting and receiving signals by the radio frequency circuit based on the operating mode of the terminal device where the radio frequency circuit is located and the type of the radio frequency circuit.

[0169] The operating mode of the terminal device where the radio frequency circuit is located can be various, such as detection mode, non-detection mode, etc., and this disclosure does not limit it.

[0170] In addition, there can be many types of radio frequency circuits. For example, the transmitting circuit and the reflecting circuit of a radio frequency circuit can use different antennas, or the transmitting circuit and the reflecting circuit of a radio frequency circuit can use the same antenna, etc. This disclosure does not limit this.

[0171] It is understandable that when the terminal device containing the radio frequency circuit is in different operating modes, the method of transmitting and receiving signals by the radio frequency circuit can be determined according to the type of radio frequency circuit.

[0172] Optionally, the radio frequency (RF) circuit can be controlled to transmit and receive detection feedback signals, enabling the terminal device to perform detection functions using the RF circuit. Alternatively, the RF circuit can be controlled to transmit and receive RF signals, enabling the terminal device to perform non-detection functions using the RF circuit. Thus, by reusing the RF circuit in the terminal device, detection functions can be achieved, thereby further enriching the functionality of the terminal device without increasing its hardware burden.

[0173] Optionally, when the terminal device is operating in detection mode, the method by which the radio frequency circuit transmits detection signals and receives detection feedback signals can be determined according to the type of radio frequency circuit.

[0174] For example, if the terminal device where the radio frequency circuit is located is in the detection mode, and the transmitting circuit and the reflecting circuit of the radio frequency circuit use different antennas, then it can be determined that the radio frequency circuit uses different antennas to transmit detection signals and receive detection feedback signals, etc.

[0175] Alternatively, if the terminal device where the radio frequency circuit is located is in the detection mode, and the transmitting circuit and the reflecting circuit of the radio frequency circuit use the same antenna, then it can be determined that the radio frequency circuit uses the same antenna to transmit detection signals and receive detection feedback signals, etc.

[0176] It should be noted that the above examples are merely illustrative and should not be construed as limiting the methods for determining the transmission and reception of detection feedback signals by the radio frequency circuit in the embodiments of this disclosure.

[0177] By implementing the embodiments of this disclosure, the method of transmitting and receiving signals by the radio frequency (RF) circuit can be determined according to the operating mode of the terminal device where the RF circuit is located and the type of the RF circuit. Therefore, by reusing the RF circuit in the terminal device, a detection function can be achieved, thereby further enriching the functionality of the terminal device without increasing its hardware burden.

[0178] Please see Figure 9 , Figure 9 This is a flowchart illustrating a control method for a radio frequency circuit provided in an embodiment of this disclosure. Figure 9 As shown, the method may include, but is not limited to, the following steps:

[0179] Step 91: In response to the terminal device operating in detection mode, when the transmitting circuit and the reflecting circuit in the radio frequency circuit use different antennas, determine that the radio frequency circuit uses different antennas to transmit detection signals and receive detection feedback signals.

[0180] The antenna can be of various types, such as a main antenna, a receiving diversity antenna, etc., and this disclosure does not limit it.

[0181] The radio frequency circuit control method provided in this disclosure can be applied to the terminal device in any embodiment of this disclosure. The specific structure of the radio frequency circuit in the radio frequency circuit control method provided in this disclosure can be referred to the structural diagram of the terminal device in any embodiment of this disclosure, and this disclosure does not limit it.

[0182] Optionally, when the radio frequency circuit operates in the TDD band within FR1, since the transmitting circuit and the reflecting circuit in the radio frequency circuit of the terminal device use different antennas, it can be determined that the transmitting circuit is connected to the main antenna to transmit the detection signal, and the reflecting circuit is connected to the receiving diversity antenna to receive the detection feedback signal.

[0183] It is understood that since the transmitting circuit and the reflecting circuit in the radio frequency circuit are connected to different antennas, there will be no signal interference between the transmitting circuit and the reflecting circuit when the radio frequency circuit operates in the TDD band within FR1. Therefore, in this disclosure, the transmitting circuit and the reflecting circuit in the radio frequency circuit can be directly reused to achieve the detection function. That is, the reflecting circuit in the embodiments of this disclosure is the receiving circuit in the multiplexed radio frequency circuit.

[0184] For example, in such Figure 3 In the schematic diagram shown, if the terminal device is in detection mode and the radio frequency circuit is operating in the TDD band within FR1, the transmitting circuit can be connected to the main antenna to transmit a detection signal, and the reflecting circuit can be connected to the receiving diversity antenna to transmit a detection feedback signal.

[0185] In this embodiment of the disclosure, if the transmitting circuit and the reflecting circuit in the radio frequency circuit of the terminal device use different antennas, then when the terminal device is operating in detection mode and the radio frequency circuit is operating in the TDD band within FR1, the transmitting circuit in the radio frequency circuit can be controlled to connect with the main antenna to transmit a detection signal, and the reflecting circuit in the radio frequency circuit can be controlled to connect with the receiving diversity antenna to receive a detection feedback signal. Therefore, by reusing the radio frequency circuit in the terminal device, the detection function can be realized, thereby further enriching the functionality of the terminal device without increasing its hardware burden.

[0186] It should be noted that if the terminal device includes multiple antenna arrays, such as two antenna arrays, the corresponding radio frequency (RF) circuit can include two RF sub-circuits. Each RF sub-circuit can include a transmitting circuit and a reflecting circuit. When the RF circuit operates in the TDD band within the second frequency range FR2, the transmitting circuit in one RF sub-circuit is connected to the corresponding antenna array to transmit a detection signal, and the reflecting circuit in the other RF sub-circuit is connected to the corresponding antenna array to receive the detection feedback signal.

[0187] For example, in such Figure 4 In the schematic diagram shown in (a), when the terminal device is operating in detection mode and the radio frequency circuit is operating in the TDD band within FR2, the first connection terminal (1) of the first switch (46) can be connected to the second connection terminal (2), and the first connection terminal (1) of the second switch (47) can be connected to the third connection terminal (3). That is, the transmitting circuit in one radio frequency sub-circuit is connected to the first antenna array (44) through the first switch (46) to transmit the detection signal; the reflecting circuit in another radio frequency sub-circuit is connected to the second antenna array (45) through the second switch (47) to receive the detection feedback signal.

[0188] In this embodiment of the disclosure, if the terminal device includes multiple antenna arrays, then when the terminal device operates in detection mode and the radio frequency circuit operates in the TDD band within FR2, the transmitting circuit in the radio frequency circuit can be controlled to connect with one antenna array and the reflecting circuit to another antenna array. Therefore, by reusing the radio frequency circuit in the terminal device, the detection function can be achieved, thereby further enriching the functionality of the terminal device without increasing its hardware burden.

[0189] Optionally, when the RF circuit operates in the FDD band within FR1, the transmitting circuit in the RF circuit is connected to the main antenna to transmit the detection signal, and the receiving diversity antenna in the RF circuit is connected to the reflecting circuit to receive the detection feedback signal.

[0190] For example, in such Figure 5In the schematic diagram shown, since the RF circuit operates in the FDD band within FR1, different frequency bands are required for transmission and reception. Therefore, the reflection circuit cannot directly reuse the communication receiving circuit, but it can reuse the receive diversity antenna in the RF circuit.

[0191] Therefore, when the terminal device is operating in the detection mode and the radio frequency circuit is operating in the FDD band within FR1, the transmitting circuit can be connected to the main antenna to transmit the detection signal. The first connection terminal (1) of the first switching unit (53) can be connected to the third connection terminal (3) to connect the receiving diversity antenna to the reflection circuit, thereby receiving the detection feedback signal.

[0192] When the terminal device is working in non-detection mode, it can transmit radio frequency signals through the transmitting circuit and the main antenna. When it is necessary to receive radio frequency signals, the first connection terminal (1) of the first switching unit (53) can be connected to the second connection terminal (2) to receive radio frequency signals.

[0193] In this embodiment of the disclosure, when the transmitting circuit and the reflecting circuit in the terminal device are connected to different antennas respectively, when the terminal device is operating in detection mode and the radio frequency circuit is operating in the FDD band within FR1, the reflecting circuit can be controlled to connect to the receiving diversity antenna. Therefore, by reusing the radio frequency circuit in the terminal device, the detection function can be achieved, thereby further enriching the functionality of the terminal device without increasing its hardware burden.

[0194] By implementing the embodiments of this disclosure, when the terminal device operates in detection mode and the transmitting and reflecting circuits in the radio frequency circuit use different antennas, it can be determined that the radio frequency circuit uses different antennas to transmit detection signals and receive detection feedback signals. Therefore, by reusing the radio frequency circuit in the terminal device, the detection function can be achieved, thereby further enriching the functionality of the terminal device without increasing its hardware burden.

[0195] Please see Figure 10 , Figure 10 This is a flowchart illustrating a control method for a radio frequency circuit provided in an embodiment of this disclosure. Figure 10 As shown, the method may include, but is not limited to, the following steps:

[0196] Step 101: In response to the terminal device operating in detection mode, determine that the radio frequency circuit uses the same antenna to transmit detection signals and receive detection feedback signals, wherein the transmitting circuit for transmitting detection signals and the reflecting circuit for receiving detection feedback signals in the terminal device are connected by an isolation circuit.

[0197] Optionally, the isolation circuit can be a circulator, a hybrid connector, or a bidirectional coupler, etc., and this disclosure does not limit it.

[0198] The radio frequency circuit control method provided in this disclosure can be applied to the terminal device in any embodiment of this disclosure. The specific structure of the radio frequency circuit in the radio frequency circuit control method provided in this disclosure can be referred to the structural diagram of the terminal device in any embodiment of this disclosure, and this disclosure does not limit it.

[0199] Optionally, when the terminal device is in probe mode and the radio frequency circuit operates in the TDD band within FR1, since the transmitting circuit and the reflecting circuit in the radio frequency circuit of the terminal device both use the same antenna, such as the main antenna, it can be determined that the transmitting circuit in the radio frequency circuit is connected to the main antenna through the isolation circuit to transmit the probe signal, and the reflecting circuit in the radio frequency circuit is connected to the main antenna through the isolation circuit to receive the probe feedback signal.

[0200] The isolation circuit is used to isolate the transmitted signals generated by the reflection circuit and the transmitting circuit, and to isolate the detection feedback signals received by the main antenna from the transmitting circuit.

[0201] It is understandable that since the transmitting circuit and the reflecting circuit in the radio frequency circuit are connected to the same antenna, there may be signal interference between the transmitting circuit and the reflecting circuit when the radio frequency circuit is operating in the TDD band within FR1. Therefore, in this disclosure, an isolation circuit can be added to the radio frequency circuit to reuse part of the radio frequency circuit to achieve the detection function.

[0202] For example, in such Figure 7 In the schematic diagram shown in (b), the radio frequency circuit uses the same antenna to transmit the detection signal and receive the detection feedback signal.

[0203] When the terminal device operates in detection mode and the radio frequency circuit operates in the TDD band within FR1, the first connection terminal (1) of the fourth switch (76) can be connected to the second connection terminal (2) of the fourth switch (76), and the second connection terminal (2) of the third switch (78) can be connected to the first connection terminal (1) of the third switch (78). That is, the transmitting circuit in the radio frequency circuit is connected to the main antenna through the first circulator (77), so as to transmit the detection signal, and the reflecting circuit in the radio frequency circuit is connected to the main antenna through the first circulator (77) to receive the detection feedback signal.

[0204] Alternatively, when the terminal device is operating in non-detection mode, the first connection terminal (1) of the fourth switch (76) can be connected to the third connection terminal (3) of the fourth switch (76), and the second connection terminal (2) of the third switch (78) can be connected to the fourth connection terminal (4) of the third switch (78). That is, the transmitting circuit in the radio frequency circuit is connected to the main antenna through the fourth switch (76) and the third switch (78), so that radio frequency signals can be transmitted. If radio frequency signals are to be received, the second connection terminal (2) of the first switch (77) is switched to the third connection terminal (3), and then the receiving circuit is connected through the second filter (711) to realize the reception of radio frequency signals.

[0205] In this embodiment, if the transmitting circuit and the reflecting circuit in the radio frequency circuit of the terminal device use the same antenna, then when the terminal device operates in detection mode and the radio frequency circuit operates in the TDD band within FR1, the transmitting circuit in the radio frequency circuit can be connected to the main antenna through a circulator to transmit a detection signal by adjusting the connection status of each connection terminal in the first and second switches, and the reflecting circuit in the radio frequency circuit can be connected to the main antenna through a circulator to receive the detection feedback signal. Thus, a portion of the radio frequency circuit in the terminal device can be reused to achieve the detection function, thereby avoiding pressure on the hardware burden of the terminal device and further enriching its functionality.

[0206] Optionally, when the terminal device is in probe mode and the radio frequency circuit operates in the FDD band within FR1, since the transmitting circuit and the reflecting circuit in the radio frequency circuit of the terminal device use the same antenna, the transmitting circuit in the radio frequency circuit can be connected to the main antenna through the isolation circuit to transmit the probe signal, and the reflecting circuit in the radio frequency circuit can be connected to the main antenna through the isolation circuit to receive the probe feedback signal.

[0207] The isolation circuit is used to isolate the transmitted signals generated by the reflection circuit and the transmitting circuit, and to isolate the detection feedback signals received by the main antenna from the transmitting circuit.

[0208] It is understandable that since the transmitting circuit and the reflecting circuit in the radio frequency circuit are connected to the same antenna, there may be signal interference between the transmitting circuit and the reflecting circuit when the radio frequency circuit is operating in the FDD band within FR1. Therefore, in this disclosure, an isolation circuit can be added to the radio frequency circuit to reuse part of the radio frequency circuit to achieve the detection function.

[0209] For example, in such Figure 7 In the schematic diagram shown in (c), the isolation circuit is a circulator, and the radio frequency circuit uses the same antenna to transmit the detection signal and receive the detection feedback signal.

[0210] When the terminal device operates in detection mode and the radio frequency circuit operates in the FDD band within FR1, the first connection terminal (1) of the sixth switch (713) can be connected to the second connection terminal (2) of the sixth switch (713), and the second connection terminal (2) of the fifth switch (715) can be connected to the first connection terminal (1) of the fifth switch (715). That is, the transmitting circuit is connected to the main antenna through the sixth switch (713), the second circulator (714), and the fifth switch (715), and the reflecting circuit can receive the detection feedback signal through the fifth switch (715) and the second circulator (714).

[0211] Alternatively, when the terminal device is operating in non-detection mode, the first connection terminal (1) of the sixth switch (713) can be connected to the third connection terminal (3) of the sixth switch (713), and the second connection terminal (2) of the fifth switch (715) can be connected to the fourth connection terminal (4) of the fifth switch (715). That is, the transmitting circuit in the radio frequency circuit is connected to the main antenna through the sixth switch (713), the fifth switch (715), and the filter unit (718), thereby transmitting radio frequency signals. When receiving radio frequency signals, the second connection terminal (2) of the fifth switch (715) is switched to be connected to the third connection terminal (3), and then the receiving circuit is connected through the filter unit (718) to realize the reception of radio frequency signals.

[0212] In this embodiment, the transmitting and reflecting circuits in the radio frequency (RF) circuit of the terminal device use the same antenna. Therefore, when the terminal device operates in detection mode and the RF circuit operates in the FDD band within FR1, the transmitting circuit in the RF circuit can be connected to the main antenna via a circulator to transmit a detection signal by adjusting the connection states of the various terminals in the first and second switches. Simultaneously, the reflecting circuit in the RF circuit can be connected to the main antenna via a circulator to receive the detection feedback signal. This allows for the reuse of a portion of the RF circuit in the terminal device to achieve the detection function without putting pressure on the hardware of the terminal device, further enriching its functionality.

[0213] Optionally, when the terminal device is in detection mode and the radio frequency circuit operates in the TDD band within FR2, since the transmitting circuit and the reflecting circuit in the radio frequency circuit of the terminal device use the same antenna, the transmitting circuit in the radio frequency circuit can be connected to the antenna unit through the isolation circuit to transmit the detection signal, and the reflecting circuit in the radio frequency circuit can be connected to the antenna unit through the isolation circuit to receive the detection feedback signal.

[0214] It is understandable that since the transmitting circuit and the reflecting circuit in the radio frequency circuit are connected to the same antenna, there may be signal interference between the transmitting circuit and the reflecting circuit when the radio frequency circuit is operating in the TDD band within FR2. Therefore, in this disclosure, an isolation circuit can be added to the radio frequency circuit to reuse part of the radio frequency circuit to achieve the detection function.

[0215] For example, in such Figure 7 In the schematic diagram shown in (a), the radio frequency circuit uses the same antenna to transmit the detection signal and receive the detection feedback signal. When the terminal device is operating in the detection mode and the radio frequency circuit is operating in the TDD band within FR2, the first connection terminal (1) in the second switch (73) can be connected to the second connection terminal (2) in the second switch (73), and the second connection terminal (2) in the first switch (72) can be connected to the first connection terminal (1) in the first switch (72). That is, the transmitting circuit is connected to the antenna unit through the second switch (73), the isolation circuit, and the first switch (72) to transmit the detection signal. When receiving the detection feedback signal, it first passes through the antenna unit and the first switch (72), and is input to the isolation circuit through the second terminal (2) of the isolation circuit. Then it is output to the reflection circuit through the third terminal (3) of the isolation circuit. That is, the reflection circuit receives the detection feedback signal from the third terminal (3) of the isolation circuit, thereby realizing the detection function of the terminal device.

[0216] In this embodiment of the present disclosure, if the transmitting circuit and the reflecting circuit in the radio frequency circuit of the terminal device use the same antenna, then when the terminal device operates in detection mode and the radio frequency circuit operates in the TDD band within FR2, the transmitting circuit in the radio frequency circuit can be connected to the main antenna through a circulator to transmit a detection signal by adjusting the connection state of each connection terminal in the first switch and the second switch, and the reflecting circuit in the radio frequency circuit can be connected to the main antenna through a circulator to receive a detection feedback signal. Thus, a portion of the radio frequency circuit in the terminal device can be reused to achieve the detection function, thereby avoiding pressure on the hardware of the terminal device and further enriching the functionality of the terminal device. By implementing this embodiment of the present disclosure, when the terminal device operates in detection mode, it can be determined that the radio frequency circuit uses the same antenna to transmit a detection signal and receive a detection feedback signal, and the transmitting circuit used to transmit the detection signal and the reflecting circuit used to receive the detection feedback signal in the terminal device are connected through an isolation circuit. Thus, a portion of the radio frequency circuit in the terminal device can be reused to achieve the detection function, thereby avoiding pressure on the hardware of the terminal device and further enriching the functionality of the terminal device. The above embodiments of the present disclosure describe the method provided by the present disclosure from the perspective of the terminal device. To implement the functions of the methods provided in the embodiments of this disclosure, the terminal device may include hardware structures and software modules, and implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules. One of the above functions can be executed in the form of hardware structures, software modules, or hardware structures plus software modules.

[0217] Please see Figure 11 The figure shows a schematic diagram of the structure of a communication device 110 provided in an embodiment of this disclosure. The communication device 110 shown in the figure may include a processing module 1101.

[0218] It is understood that the communication device 110 can be a terminal device, a device for a terminal device, or a device that can be used in conjunction with a terminal device.

[0219] Communication device 110, comprising:

[0220] The processing module 1101 is used to determine the method of transmitting and receiving signals by the radio frequency circuit according to the working mode of the terminal device where the radio frequency circuit is located and the type of the radio frequency circuit.

[0221] Optionally, the processing module 1101 is specifically used for:

[0222] In response to the terminal device operating in detection mode, the method by which the radio frequency circuit transmits detection signals and receives detection feedback signals is determined according to the type of radio frequency circuit.

[0223] Optionally, the processing module 1101 is further specifically used for:

[0224] When the transmitting circuit and the reflecting circuit in the radio frequency circuit use different antennas, it is determined that the radio frequency circuit uses different antennas to transmit detection signals and receive detection feedback signals.

[0225] Optionally, the processing module 1101 is further specifically used for:

[0226] When the radio frequency circuit operates in the time division duplex (TDD) band within the first frequency range FR1, it is determined that the transmitting circuit is connected to the main antenna to transmit a detection signal, and the reflecting circuit is connected to the receiving diversity antenna to receive a detection feedback signal.

[0227] Optionally, the radio frequency circuit includes two radio frequency sub-circuits, each of which includes a transmitting circuit and a reflecting circuit. The processing module 1101 is further specifically used for:

[0228] When the radio frequency circuit operates in the TDD band within the second frequency range FR2, the transmitting circuit in one radio frequency sub-circuit is connected to the corresponding antenna array to transmit a detection signal, and the reflecting circuit in another radio frequency sub-circuit is connected to the corresponding antenna array to receive a detection feedback signal.

[0229] Optionally, the processing module 1101 is further specifically used for:

[0230] When the radio frequency circuit operates in the frequency division duplex (FDD) band within FR1, it is determined that the transmitting circuit in the radio frequency circuit is connected to the main antenna to transmit a detection signal, and the receiving diversity antenna in the radio frequency circuit is connected to the reflecting circuit to receive a detection feedback signal.

[0231] Optionally, the processing module 1101 is further specifically used for:

[0232] The radio frequency circuits are determined to use the same antenna to transmit detection signals and receive detection feedback signals, wherein the transmitting circuit for transmitting detection signals and the reflecting circuit for receiving detection feedback signals in the terminal device are connected by an isolation circuit.

[0233] Optionally, the processing module 1101 is further specifically used for:

[0234] When the radio frequency circuit operates in the TDD band within FR1 or the FDD band within FR1, it is determined that the transmitting circuit in the radio frequency circuit is connected to the main antenna through the isolation circuit to transmit a detection signal, and the reflecting circuit in the radio frequency circuit is connected to the main antenna through the isolation circuit to receive a detection feedback signal. The isolation circuit is used to isolate the transmitted signal generated by the reflecting circuit from the transmitting circuit, and to isolate the detection feedback signal received by the main antenna from the transmitting circuit.

[0235] Optionally, the processing module 1101 is further specifically used for:

[0236] When the radio frequency circuit operates in the TDD band within FR2, it is determined that the transmitting circuit in the radio frequency circuit is connected to the antenna unit through the isolation circuit to transmit a detection signal, and the reflecting circuit in the radio frequency circuit is connected to the antenna unit through the isolation circuit to receive a detection feedback signal.

[0237] The communication device provided in this disclosure can determine the method of transmitting and receiving signals by the radio frequency (RF) circuit according to the operating mode of the terminal device where the RF circuit is located and the type of the RF circuit. Therefore, by reusing the RF circuit in the terminal device, a detection function can be achieved, thereby further enriching the functionality of the terminal device without increasing its hardware burden.

[0238] Please see Figure 12 , Figure 12 This is a schematic diagram of another communication device 120 provided in this embodiment. The communication device 120 can be a terminal device, or a chip, chip system, or processor that supports the terminal device in implementing the above methods. This device can be used to implement the methods described in the above method embodiments, and for details, please refer to the description in the above method embodiments.

[0239] The communication device 120 may include one or more processors 1201. The processor 1201 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0240] Optionally, the communication device 120 may further include one or more memories 1202, which may store a computer program 1204. The processor 1201 executes the computer program 1204 to cause the communication device 120 to perform the methods described in the above method embodiments. Optionally, the memory 1202 may also store data. The communication device 120 and the memory 1202 may be provided separately or integrated together.

[0241] Optionally, the communication device 120 may also include a transceiver 1205 and an antenna 1206. The transceiver 1205 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 1205 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0242] Optionally, the communication device 120 may further include one or more interface circuits 1207. The interface circuits 1207 are used to receive code instructions and transmit them to the processor 1201. The processor 1201 executes the code instructions to cause the communication device 120 to perform the methods described in the above method embodiments.

[0243] Communication device 120 is a terminal device: processor 1201 is used to execute Figure 8 Step 81 in the middle; Figure 9 Step 91 in the middle; or Figure 10 Step 101 in the process.

[0244] In one implementation, the processor 1201 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receiving and transmitting functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0245] In one implementation, processor 1201 may store computer program 1203, which runs on processor 1201 and causes communication device 120 to perform the methods described in the above method embodiments. Computer program 1203 may be embedded in processor 1201, in which case processor 1201 may be implemented in hardware.

[0246] In one implementation, the communication device 120 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the foregoing method embodiments. The processor and transceiver described in this disclosure can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductors (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal oxide semiconductors (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0247] The communication device described in the above embodiments may be a network device or a terminal device, but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may vary. Figure 12 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0248] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0249] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0250] (3) ASIC, such as modem;

[0251] (4) Modules that can be embedded in other devices;

[0252] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0253] (6) Others, etc.

[0254] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 13 The diagram shows the structure of the chip. Figure 13 The chip shown includes a processor 1301 and an interface 1302. There can be one or more processors 1301, and multiple interfaces 1302.

[0255] Optionally, the chip also includes a memory 1303, which is used to store necessary computer programs and data.

[0256] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this disclosure.

[0257] This disclosure also provides a control system for a radio frequency circuit, the system including the aforementioned Figure 11 The communication device in the embodiment serves as a terminal device, or the system includes the aforementioned Figure 12 The communication device in the embodiment serves as a terminal device.

[0258] This disclosure also provides a computer-readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0259] This disclosure also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0260] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0261] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., used in this disclosure are merely for the convenience of description and are not intended to limit the scope of the embodiments of this disclosure, nor do they indicate the order of events.

[0262] At least one of the features described in this disclosure can also be described as one or more, and multiple features can be two, three, four or more, and this disclosure does not impose any limitations. In the embodiments of this disclosure, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no sequential order or size order among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0263] The correspondences shown in the tables of this disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this disclosure is not limiting. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this disclosure may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headers of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

[0264] The predefined terms in this disclosure can be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0265] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0266] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0267] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A control method for a radio frequency circuit, characterized in that, include: Based on the operating mode of the terminal device where the radio frequency circuit is located and the type of the radio frequency circuit, the method of transmitting and receiving signals by the radio frequency circuit is determined, wherein the terminal device includes a radio frequency circuit, a control circuit, and an antenna unit; The radio frequency circuit includes: a switching unit; The radio frequency circuit includes a transmitting circuit, a reflecting circuit, and an isolation circuit; The transmitting circuit is connected to the first end of the isolation circuit; The second end of the isolation circuit is connected to the first connection end of the first switch in the switching unit, and the third end of the isolation circuit is connected to the reflection circuit. The isolation circuit is used to isolate the transmission signal generated by the reflection circuit and the transmission circuit, and to isolate the received detection feedback signal from the transmission circuit. The second connection terminal of the first switch in the switching unit is connected to the antenna unit; The control circuit is specifically used to: when it is determined that the terminal device is working in the detection mode, control the first connection terminal of the first switch in the switching unit to connect with the second connection terminal; The radio frequency circuit also includes a receiving circuit, and the switching unit also includes a second switch; The receiving circuit is connected to the third connection terminal of the first switch; The transmitting circuit is connected to the first connection terminal of the second switch; The second connection terminal of the second switch is connected to the first terminal of the isolation circuit, and the third connection terminal of the second switch is connected to the fourth connection terminal of the first switch. Specifically, the control circuit is used to, when determining that the terminal device is operating in detection mode and the radio frequency circuit is operating in the TDD band within FR1, or the terminal device is operating in detection mode and the radio frequency circuit is operating in the FDD band within FR1, or the terminal device is operating in detection mode and the radio frequency circuit is operating in the TDD band within FR2, control the first connection terminal in the second switch to connect with the second connection terminal in the second switch, and control the second connection terminal in the first switch to connect with the first connection terminal in the first switch.

2. The method as described in claim 1, characterized in that, The step of determining the method of transmitting and receiving signals by the radio frequency circuit based on the operating mode of the terminal device where the radio frequency circuit is located and the type of the radio frequency circuit includes: In response to the terminal device operating in detection mode, the method by which the radio frequency circuit transmits detection signals and receives detection feedback signals is determined according to the type of radio frequency circuit.

3. The method as described in claim 2, characterized in that, The method of determining the method of transmitting detection signals and receiving detection feedback signals by the radio frequency circuit according to the radio frequency circuit type includes: When the transmitting circuit and the reflecting circuit in the radio frequency circuit use different antennas, it is determined that the radio frequency circuit uses different antennas to transmit detection signals and receive detection feedback signals.

4. The method as described in claim 3, characterized in that, The step of determining that the radio frequency circuit uses different antennas to transmit detection signals and receive detection feedback signals includes: When the radio frequency circuit operates in the time division duplex (TDD) band within the first frequency range FR1, it is determined that the transmitting circuit is connected to the main antenna to transmit a detection signal, and the reflecting circuit is connected to the receiving diversity antenna to receive a detection feedback signal.

5. The method as described in claim 3, characterized in that, The radio frequency circuit includes two radio frequency sub-circuits, each including a transmitting circuit and a reflecting circuit. Determining that the radio frequency circuit uses different antennas to transmit detection signals and receive detection feedback signals includes: When the radio frequency circuit operates in the TDD band within the second frequency range FR2, the transmitting circuit in one radio frequency sub-circuit is connected to the corresponding antenna array to transmit a detection signal, and the reflecting circuit in another radio frequency sub-circuit is connected to the corresponding antenna array to receive a detection feedback signal.

6. The method as described in claim 3, characterized in that, The step of determining that the radio frequency circuit uses different antennas to transmit detection signals and receive detection feedback signals includes: When the radio frequency circuit operates in the frequency division duplex (FDD) band within FR1, it is determined that the transmitting circuit in the radio frequency circuit is connected to the main antenna to transmit a detection signal, and the receiving diversity antenna in the radio frequency circuit is connected to the reflecting circuit to receive a detection feedback signal.

7. The method according to any one of claims 2-6, characterized in that, Based on the type of radio frequency circuit in the terminal device, the method of transmitting detection signals and receiving detection feedback signals by the radio frequency circuit is determined, including: The radio frequency circuits are determined to use the same antenna to transmit detection signals and receive detection feedback signals, wherein the transmitting circuit for transmitting detection signals and the reflecting circuit for receiving detection feedback signals in the terminal device are connected by an isolation circuit.

8. The method as described in claim 7, characterized in that, The step of determining that the radio frequency circuit uses the same antenna to transmit detection signals and receive detection feedback signals includes: When the radio frequency circuit operates in the TDD band within FR1 or the FDD band within FR1, it is determined that the transmitting circuit in the radio frequency circuit is connected to the main antenna through the isolation circuit to transmit a detection signal, and the reflecting circuit in the radio frequency circuit is connected to the main antenna through the isolation circuit to receive a detection feedback signal. The isolation circuit is used to isolate the transmitted signal generated by the reflecting circuit from the transmitting circuit, and to isolate the detection feedback signal received by the main antenna from the transmitting circuit.

9. The method as described in claim 7, characterized in that, The step of determining that the radio frequency circuit uses the same antenna to transmit detection signals and receive detection feedback signals includes: When the radio frequency circuit operates in the TDD band within FR2, it is determined that the transmitting circuit in the radio frequency circuit is connected to the antenna unit through the isolation circuit to transmit a detection signal, and the reflecting circuit in the radio frequency circuit is connected to the antenna unit through the isolation circuit to receive a detection feedback signal.

10. A terminal device, characterized in that, include: Radio frequency circuits, control circuits, and antenna units; The radio frequency circuit is connected to the antenna unit; The control circuit is connected to the radio frequency circuit and is used to control the radio frequency circuit to transmit and receive signals according to the working mode of the terminal device and the type of the radio frequency circuit. The radio frequency circuit includes: a switching unit; The radio frequency circuit includes a transmitting circuit, a reflecting circuit, and an isolation circuit; The transmitting circuit is connected to the first end of the isolation circuit; The second end of the isolation circuit is connected to the first connection end of the first switch in the switching unit, and the third end of the isolation circuit is connected to the reflection circuit. The isolation circuit is used to isolate the transmission signal generated by the reflection circuit and the transmission circuit, and to isolate the received detection feedback signal from the transmission circuit. The second connection terminal of the first switch in the switching unit is connected to the antenna unit; The control circuit is specifically used to: when it is determined that the terminal device is working in the detection mode, control the first connection terminal of the first switch in the switching unit to connect with the second connection terminal; The radio frequency circuit also includes a receiving circuit, and the switching unit also includes a second switch; The receiving circuit is connected to the third connection terminal of the first switch; The transmitting circuit is connected to the first connection terminal of the second switch; The second connection terminal of the second switch is connected to the first terminal of the isolation circuit, and the third connection terminal of the second switch is connected to the fourth connection terminal of the first switch. Specifically, the control circuit is used to, when determining that the terminal device is operating in detection mode and the radio frequency circuit is operating in the TDD band within FR1, or the terminal device is operating in detection mode and the radio frequency circuit is operating in the FDD band within FR1, or the terminal device is operating in detection mode and the radio frequency circuit is operating in the TDD band within FR2, control the first connection terminal in the second switch to connect with the second connection terminal in the second switch, and control the second connection terminal in the first switch to connect with the first connection terminal in the first switch.

11. The terminal device as described in claim 10, characterized in that, The antenna unit includes a main antenna and a receiving diversity antenna, and the radio frequency circuit includes a transmitting circuit and a reflecting circuit. The transmitting circuit is connected to the main antenna, and the reflecting circuit is connected to the receiving diversity antenna; The control circuit is specifically used to: when it is determined that the terminal device is working in the detection mode and the radio frequency circuit is working in the TDD band within FR1, control the transmitting circuit to transmit the detection signal through the main antenna, and control the reflecting circuit to receive the detection feedback signal through the receiving diversity antenna.

12. The terminal device as described in claim 10, characterized in that, The radio frequency circuit includes a switching unit, and the antenna unit includes two antenna arrays; The first connection terminal of the first switch in the switching unit is connected to an antenna array, the second connection terminal of the first switch is connected to the transmitting circuit in the radio frequency circuit, and the third connection terminal of the first switch is connected to the reflecting circuit in the radio frequency circuit. The first connection terminal of the second switch in the switching unit is connected to another antenna array, the second connection terminal of the second switch is connected to the transmitting circuit, and the third connection terminal of the second switch is connected to the reflecting circuit. The control circuit is specifically used to: when it is determined that the terminal device is working in the detection mode and the radio frequency circuit is working in the TDD band within FR2, control the first connection terminal of the first switch to connect with the second connection terminal, and control the first connection terminal of the second switch to connect with the third connection terminal.

13. The terminal device as described in claim 10, characterized in that, The radio frequency circuit includes a switching unit, and the antenna unit includes a main antenna and a receiving diversity antenna. The first connection terminal of the switching unit is connected to the receiving diversity antenna, the second connection terminal of the switching unit is connected to the receiving circuit in the radio frequency circuit, and the third connection terminal of the switching unit is connected to the reflecting circuit in the radio frequency circuit. The main antenna is connected to the transmitting circuit in the radio frequency circuit. The control circuit is specifically used to: when it is determined that the terminal device is working in the detection mode and the radio frequency circuit is working in the FDD band within FR1, control the first connection terminal of the switching unit to connect with the third connection terminal.

14. The terminal device as described in claim 10, characterized in that, The isolation circuit can be any of the following: a circulator, a hybrid connector, or a bidirectional coupler.

15. The terminal device as described in claim 10, characterized in that, The radio frequency circuit also includes a receiver protector; One end of the receiver protector is connected to the reflection circuit, and the other end of the receiver protector is connected to the third end of the isolation circuit.

16. A communication device, characterized in that, include: The processing module is used to determine the method of transmitting and receiving signals by the radio frequency circuit according to the working mode of the terminal device where the radio frequency circuit is located and the type of the radio frequency circuit, wherein the terminal device includes a radio frequency circuit, a control circuit, and an antenna unit; The radio frequency circuit includes: a switching unit; The radio frequency circuit includes a transmitting circuit, a reflecting circuit, and an isolation circuit; The transmitting circuit is connected to the first end of the isolation circuit; The second end of the isolation circuit is connected to the first connection end of the first switch in the switching unit, and the third end of the isolation circuit is connected to the reflection circuit. The isolation circuit is used to isolate the transmission signal generated by the reflection circuit and the transmission circuit, and to isolate the received detection feedback signal from the transmission circuit. The second connection terminal of the first switch in the switching unit is connected to the antenna unit; The control circuit is specifically used to: when it is determined that the terminal device is working in the detection mode, control the first connection terminal of the first switch in the switching unit to connect with the second connection terminal; The radio frequency circuit also includes a receiving circuit, and the switching unit also includes a second switch; The receiving circuit is connected to the third connection terminal of the first switch; The transmitting circuit is connected to the first connection terminal of the second switch; The second connection terminal of the second switch is connected to the first terminal of the isolation circuit, and the third connection terminal of the second switch is connected to the fourth connection terminal of the first switch. Specifically, the control circuit is used to, when determining that the terminal device is operating in detection mode and the radio frequency circuit is operating in the TDD band within FR1, or the terminal device is operating in detection mode and the radio frequency circuit is operating in the FDD band within FR1, or the terminal device is operating in detection mode and the radio frequency circuit is operating in the TDD band within FR2, control the first connection terminal in the second switch to connect with the second connection terminal in the second switch, and control the second connection terminal in the first switch to connect with the first connection terminal in the first switch.

17. A communication device, characterized in that, The apparatus includes a processor and a memory, the memory storing a computer program, the processor executing the computer program stored in the memory to perform the method as described in any one of claims 1 to 9.

18. A communication device, characterized in that, include: Processor and interface circuitry; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to run the code instructions to perform the method as described in any one of claims 1 to 9.

19. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 1 to 9 to be implemented.

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