Circuit device and communication device

Abstract

A circuit arrangement and a communication device, the circuit arrangement comprising: a first channel for transmitting a communication signal and a radar signal through a first antenna; the second channel is used for receiving a radar signal through a second antenna, and the radar signal is used for realizing sensing; the first channel or the second channel is also used for receiving a communication signal through the first antenna; the clock circuit is connected with the first channel and the second channel, and the clock circuit is used for providing a reference clock for the first channel and the second channel. By using the circuit device and the communication device, a communication function and a sensing function can be realized at the same time.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular, to a circuit device and a communication device. Background Art

[0002] In the wireless field, communication devices can realize communication functions. In many scenarios, the communication functions of communication devices are idle, while there is a strong demand to use communication devices for perception. How communication devices can realize both communication and perception functions is a research direction. Summary of the invention

[0003] The embodiments of the present application provide a circuit device and a communication device to simultaneously realize a communication function and a perception function.

[0004] In a first aspect, a circuit device is provided, including: a first channel, used to send communication signals and radar signals through a first antenna; a second channel, used to receive the radar signal through a second antenna, the radar signal is used to sense the first channel or the second channel, and is also used to receive the communication signal through the first antenna; a clock circuit, the clock circuit is connected to the first channel and the second channel, and the clock circuit is used to provide a reference clock for the first channel and the second channel.

[0005] Through the above design, the circuit device can realize the communication function and the radar sensing function at the same time, realizing the integration of the communication function and the radar sensing function.

[0006] In one design, the first channel includes a first chip, the second channel includes a second chip, and the first chip receives the communication signal via the first antenna.

[0007] Optionally, in this design, one implementation of the circuit device is a circuit board, which includes the aforementioned first chip and second chip. The implementation function of the first chip can refer to the description of the first channel implementation function, and the implementation function of the second chip can refer to the description of the second channel implementation function.

[0008] In one design, the first channel includes a first circuit, the second channel includes a second circuit, the first circuit and the second circuit belong to the same chip, and the second circuit is used to receive the communication signal through the first antenna.

[0009] Optionally, in this design, one implementation of the circuit device is a chip, which includes a first circuit and a second circuit. The implementation function of the first circuit can refer to the description of the implementation function of the first channel, and the implementation function of the second circuit can refer to the description of the implementation function of the second channel.

[0010] In one design, the first circuit includes a first switch, a first end of the first switch is connected to the first antenna, a second end of the first switch is connected to a power amplifier PA in the first circuit, and a third end of the first end of the first switch in the second circuit.

[0011] In one design, the second circuit includes a second switch, a first end of the second switch is connected to a third end of the first switch, a second end of the second switch is connected to the second antenna, and a third end of the second switch is connected to a first low noise amplifier LNA in the second circuit.

[0012] In one design, the second circuit further includes: a second LNA and a third LNA, the second LNA is located between the first end of the second switch and the third end of the first switch, and the third LNA is located between the second end of the second switch and the second antenna.

[0013] Through the above design, by cooperating with multiple LNA stages, the system noise of the received communication signal or radar signal can be reduced and the signal-to-noise ratio of the received signal can be improved.

[0014] In one design, the first circuit includes a first low-pass filter (LPF), and the second circuit includes a second LPF.

[0015] In one design, the first channel is further used to: when sending the radar signal, send indication information to the second channel, where the indication information is used to instruct the second channel to receive the radar signal.

[0016] Through the above design, the second channel can be in a dormant state when the indication information is not received. When the indication information is received, it can wake itself up and receive the radar signal, thereby saving the energy consumption of the second channel.

[0017] In one design, the first channel operates in a communication state and a perception state in a time-division manner; wherein, when the first channel operates in the communication state, the first channel is used to send and / or receive the communication signal; or, when the first channel operates in the perception state, the first channel is used to send the radar signal.

[0018] Through the above design, the first channel works in the communication state and the perception state in a time-division manner, which can achieve mutual non-interference between the communication function and the radar perception function, and avoid affecting the original communication function when realizing the perception function.

[0019] In one design, before the first channel sends the radar signal, the first channel further includes: sending a control signal, the control signal is used to notify other communication devices that the first channel occupies a wireless channel. Optionally,

[0020] The control signal includes a first field, and the first field includes indication information of the time that the first channel occupies the wireless channel.

[0021] In a second aspect, a communication device is provided, comprising the circuit device of the first aspect. Optionally, the communication device may be a WLAN device, such as an access point AP, or a user STA or other device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a structural schematic diagram of a circuit device provided in an embodiment of the present application;

[0023] Figure 2 is a structural schematic diagram of a circuit device provided in Embodiment 1 of the present application;

[0024] Figure 3 It is a schematic diagram of the time-division working mode provided in the embodiment of the present application;

[0025] Figure 4 is a structural schematic diagram of a first chip provided in an embodiment of the present application;

[0026] Figure 5 is a structural schematic diagram of a second chip provided in an embodiment of the present application;

[0027] Figure 6 is a structural schematic diagram of a circuit device provided in Embodiment 2 of the present application;

[0028] Figure 7 It is a structural schematic diagram of the first circuit and the second circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings.

[0030] An embodiment of the present application provides a wireless local area network (WLNA) communication system, including an access point (AP) and a station (STA).

[0031] The AP may be a wireless hub or router for providing wireless network access services, and may serve as an access point for a STA to enter a wired Ethernet backbone.

[0032] STA is a device with wireless transceiver function. For example, STA can be a terminal device, user equipment (UE), mobile station, mobile terminal, etc. STA can be widely used in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), Internet of things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. STA can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, drone, helicopter, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of this application do not limit the specific technology and specific device form adopted by STA.

[0033] In one design, the AP or STA can implement the perception function. For example, in one implementation, taking downlink transmission as an example, the AP sends a downlink signal to the STA, and the downlink signal includes a leading part and a data part. The STA determines the channel state information (CSI) based on the leading part of the downlink signal. The STA can determine the information of the target object by analyzing and / or processing the CSI. For example, it can be determined whether there is a target object passing between the AP and the STA. Because when a target object passes between the AP and the STA, it may cause a certain change in the CSI. In this design, it is necessary to determine the perception result with the help of the communication signal transmitted between the AP and the STA. The main disadvantage of this design is that the acquisition of the perception result requires the help of the communication signal, and the accuracy of the perception result is greatly affected by the communication signal. For example, when the quality of the communication signal is poor, the accuracy of the CSI obtained by the STA is also poor, which will lead to poor accuracy of the perception result.

[0034] The embodiment of the present application provides a circuit device, in which a first channel sends a radar signal, a second channel receives the radar signal, and a perception result is obtained by analyzing the received radar signal. The perception signal is obtained with the help of the radar signal instead of the original communication signal, thereby reducing the influence of the communication signal on the perception result.

[0035] It can be understood that the solutions in the embodiments of the present application can be applied to various communication systems. Figure 1When the WLNA communication system is shown, the communication signal in the embodiment of the present application can be called a wireless fidelity (WIFI) service frame. In addition, the solution of the embodiment of the present application can also be applied to Bluetooth, radio frequency identification, Zigbee, high performance wireless local area network (local area network, LNA) (high performance radio LNA, HIPERLNA), personal area network (personal area network, PAN) or other networks currently known or developed in the future, etc., without limitation.

[0036] It is understandable that when the solution of the embodiment of the present application is applied to Figure 1 When the WLNA communication system is shown, the circuit device or communication device provided by the present application can be applicable to any one of the Institute of Electrical and Electronics Engineers (IEEE) 802.11 series protocols adopted by WLNA, such as 802.11a / b / g, 802.11n, 802.11ac, 802.11ax, 802.11be, 802.11bf and future 802.11 protocols. The circuit device provided by the embodiment of the present application can be applied to a chip or circuit in a communication device, and accordingly, the communication device supports communication using the IEEE 802.11 series protocols.

[0037] The embodiment of the present application provides a circuit device, which can be applied to a communication device. Taking the solution in the embodiment of the present application applied to a WLNA communication system as an example, the communication device can be a WLNA device such as an AP or a STA.

[0038] The circuit device in the embodiment of the present application may be a circuit system, a circuit board, or a chip, etc., without limitation. Figure 1 As shown, the circuit device comprises:

[0039] The first channel is used to send communication signals and radar signals through the first antenna.

[0040] For example, the first channel may be connected to the first antenna, and the first channel may send a communication signal and a radar signal through the first antenna. The communication signal may be referred to as a communication service frame, and the radar signal may be referred to as a radar frame, etc.

[0041] The second channel is used to receive radar signals through the second antenna, and the radar signals are used to achieve perception.

[0042] For example, the second channel may be connected to the second antenna, and the second channel may receive the radar signal through the second antenna.

[0043] A clock circuit is connected to the first channel and the second channel, and is used to provide a reference clock for the first channel and the second channel.

[0044] In one implementation, the clock circuit may be a crystal oscillator, which provides reference clocks for both the first channel and the second channel, thereby ensuring that the clocks of the two channels are consistent.

[0045] In the embodiment of the present application, the first channel or the second channel can receive the communication signal. For example, the first channel can receive the communication signal through the first antenna, as described in [Example 1] below. Alternatively, the second channel can receive the communication signal through the first antenna, as described in [Example 2] below.

[0046] In one design, the first channel and the second channel can communicate with each other. For example, the first channel and the second channel can be connected through at least one general-purpose input / output (GPIO) port, which can be referred to as an input / output (I / O) port. The first channel and the second channel can communicate with each other through the GPIO port. In one implementation, when the first channel sends a radar signal through the first antenna, it can send an indication message to the second channel, and the indication message can instruct the second channel to receive the radar signal. When the second channel receives the indication message, it can start receiving the radar signal. In one implementation, the second channel can be in a dormant state when it does not receive the indication message. When receiving the indication message, it can wake itself up and receive the radar signal, thereby saving energy consumption of the second channel.

[0047] In the embodiment of the present application, when the second channel receives the radar signal, it can analyze and / or process the received radar signal, obtain and output the perception result. Alternatively, the second channel can report the received radar signal to other devices, and the other devices can analyze and / or process the radar signal, obtain and output the perception result.

[0048] From the above description, it can be seen that: the first channel is used to send communication signals and radar signals. Optionally, the first channel can also be used to receive communication signals. The second channel is used to receive radar signals. In the embodiment of the present application, the first channel can work in a communication state and a sensing state in a time-division manner.

[0049] When the first channel is in the communication state, the first channel can send a communication signal. Furthermore, the first channel can also receive a communication signal. When the first channel is in the sensing state, the first communication channel can send a radar signal.

[0050] Optionally, before sending the first signal, the first channel further includes: the first channel sends a control signal, and the control signal is used to notify other communication devices that the first channel occupies the wireless channel. Taking the solution in the embodiment of the present application applied to the WLNA communication system as an example, the control signal can be a self-clear to send (Self-CTS) frame in the standard 802.11. The Self-CTS frame is a control signal specified by the 802.11 protocol, and the control signal can be used to clear the channel. In the embodiment of the present application, the first channel and the second channel can operate in an unlicensed frequency band, and different communication devices can occupy the wireless channel through air interface competition. If the first channel directly sends a radar signal, it may not be recognized by other communication devices, which may cause conflicts between signals and affect the radar perception performance. In the embodiment of the present application, before sending the radar signal, the first channel can first send a control signal to notify other communication devices that it will occupy the wireless channel. Optionally, the first channel can also notify other communication devices of the time it occupies the wireless channel through a control signal, and this time can be called the first time. For example, in one implementation, the control signal may include a first field, and the first field includes indication information of the first time. The first field may be a network allocation vector (NAV) field, etc.

[0051] Through the above design, the circuit device can realize the communication function and the perception function at the same time, and realize the integration of the communication function and the perception function. At the same time, in the relevant design of the circuit device, the perception result is obtained by analyzing and / or processing the radar signal. The acquisition of the perception result no longer depends on the communication signal, thereby reducing the influence of the communication signal on the perception result.

[0052] [Example 1]

[0053] In one design, the first channel includes a first chip, and the second channel includes a second chip. In one description, the description of "first channel" in the foregoing text can be replaced by "first chip", and the description of "second channel" in the foregoing text can be replaced by "second chip".

[0054] In the first embodiment, a circuit device is provided, which can be applied to a circuit board. For example, the circuit device can be a part of a circuit board, that is, the circuit board includes Figure 2 In addition to the circuit device shown in the figure, other components may also be included. Alternatively, the circuit device may be equivalent to a circuit board, etc., that is, Figure 2 The circuit device shown may be a specific implementation of a circuit board. The circuit board in the embodiment of the present application includes but is not limited to a printed circuit board (PCB). Figure 2 As shown, the circuit device includes a first chip, a second chip and a clock circuit.

[0055] The first chip can send communication signals, receive communication signals, send radar signals, etc. through the first antenna. Optionally, the first chip can be called a chip for wireless communication and sending radar signals.

[0056] In one implementation, the first chip may be connected to the first antenna. The first chip may send a communication signal or a radar signal to the first antenna, and the first antenna may send the communication signal or the radar signal to the outside through the air interface. The first antenna may receive a communication signal through the air interface, and the first antenna may send the received communication signal to the first chip, etc.

[0057] The second chip may receive the radar signal through the second antenna. Optionally, the second chip may be referred to as a chip for receiving radar signals.

[0058] In one implementation, the second chip may be connected to the second antenna. The second chip may receive the radar signal through the air interface, and the second antenna sends the received radar signal to the second chip.

[0059] The clock circuit is connected to the first chip and the second chip respectively, and is used to provide a reference clock signal for the first chip and the second chip so that the clocks of the first chip and the second chip are kept synchronized.

[0060] In one implementation, the clock circuit may be a crystal oscillator.

[0061] Optionally, the first chip may be connected to the second chip, and the first chip and the second chip may communicate with each other. For example, when the first chip sends a radar signal through the first antenna, it may send an indication message to the second chip, and the indication message may instruct the second chip to receive the radar signal. After receiving the indication message, the second chip may start receiving the radar signal. In one implementation, the first chip and the second chip are connected through at least one GPIO port.

[0062] In the embodiment of the present application, the first chip can work in a communication state and a sensing state in a time-division manner. When the first chip works in the communication state, the first chip can send a communication signal and / or receive a communication signal. When the first chip works in the sensing state, the first chip can send a radar signal.

[0063] In an embodiment of the present application, a radar sensing process may be defined. In a radar sensing process, multiple cycles are included. In each cycle, the first chip performs the sending of radar signals and the transmission of communication signals in a time-division manner. For example, in each cycle, the first chip first performs at least one sending of radar signals, and then transmits communication signals, etc. The process of transmitting communication signals includes: the process of the first chip sending communication signals and / or receiving communication signals. For example, Figure 3 As shown, the time of each cycle is defined as T2, and the value range of T2 can be: 1-10 milliseconds (ms). In each T2 cycle, the time for sending the radar signal is defined as T1, and the value range of T1 is: 50-500 microseconds (us). It can be understood that in each T2 cycle, except for the time T1 for sending the radar signal, all or part of the remaining time can be used to transmit the communication signal. The time of a cycle of a radar sensing process is defined as T3, and the value range of T3 is 50us-1000ms.

[0064] It can be understood that the principle of perception can be: the first chip sends a radar signal, the radar signal reaches the target object, the radar signal is reflected by the target object, the second chip receives the reflected radar signal, and the second chip or other devices analyze and / or process the received radar signal to determine the perception result. The perception result includes but is not limited to: identifying the target object and / or locating the target object, etc. The positioning of the target object includes at least one of the following: determining the distance to the target object, the moving speed of the target object, or the moving angle of the target object. In an embodiment of the present application, a radar perception process can be defined as a radar process that can obtain a perception result. In an embodiment of the present application, the first chip sends a radar signal. At this time, the first chip sends an indication message to the second chip to instruct the second chip to start receiving the radar signal. The second chip receives the radar signal. The second chip or other devices usually need to perform comprehensive processing and / or analysis on multiple received radar signals to obtain the perception result. For example, the second chip or other devices need to perform comprehensive processing and / or processing on 10 received radar signals to obtain the perception result. Then the above Figure 3 In the example, a radar sensing process cycle T3 includes 10 T2 cycles.

[0065] In the embodiments of the present application, for the above Figure 3 The example shown can also be described in another way:

[0066] like Figure 3As shown, in an embodiment of the present application, multiple radar sensing processes may be included. The time between two adjacent radar sensing processes may be referred to as T4 time. During the T4 time, the first chip may transmit a communication signal. There is no restriction on the value range of T4, and its value range may be associated with specific business requirements. In one design, the value range of T4 may be between tens of ms and tens of seconds (s).

[0067] In a radar sensing process, at least one radar sensing operation is included, and each radar sensing operation includes a control signal and a radar signal. Optionally, the radar sensing operation can also be called an atomic operation. Optionally, there is a time interval between the control signal and the subsequent radar signal, and the time interval can be less than or equal to 16us. Alternatively, there is no time interval between the control signal and the subsequent radar signal, without limitation. In an embodiment of the present application, the time of a radar sensing operation can be defined as T1, and the range of T1 time values ​​can be found in the above text. The difference between the start times of two adjacent radar sensing operations is defined as T2. In a radar sensing process, the difference T2 between the start times of different adjacent radar sensing operations can be the same or different, without limitation. The remaining time between adjacent radar sensing operations can be used to transmit communication signals. The time of a radar sensing process is defined as T3, and the value of T3 can be found in the above text. It should be noted that in one design, the value of T3 of a radar sensing process can be 50us, and the value of the duration T1 of a radar sensing operation can be 50us. In this case, it means that one radar sensing process includes one radar sensing operation. It should be noted that the control signal may include a first field, which includes indication information of a first time, and the first time refers to the time when the first chip occupies the wireless channel. In the embodiment of the present application, the first time needs to be at least until the transmission of the radar signal is completed.

[0068] In an embodiment of the present application, when the first chip works in a communication state, the first chip needs to support sending or receiving communication signals. When the first chip works in a sensing state, the first chip needs to support sending radar signals. Therefore, in an embodiment of the present application, the first chip needs to support both sending and receiving. That is, the first chip can be configured as a transmitting path, or can be configured as a receiving path. The first chip supports switching between the transmitting path and the receiving path.

[0069] In one design, Figure 4As shown, the first chip includes at least one of the following components: a transmitter (TX) baseband processor, a digital-to-analog converter (DAC), a low pass filter (LPF), a first mixer, a power amplifier (PA), a switch (SW), a low noise amplifier (LNA), a second mixer, a radio frequency (RF) phase locking loop (PLL), an analog to digital converter (ADC), or a receiver (RX) baseband processor, etc.

[0070] It can be understood that the switch in the first chip includes three terminals, the first terminal is connected to the first antenna, the second terminal is connected to the PA in the transmitting path, and the third terminal is connected to the LNA in the receiving path. When the first terminal is connected to the second terminal, it means that the first chip is configured as a transmitting path, and a communication signal or a radar signal can be sent through the first antenna. When the first terminal is connected to the third terminal, it means that the first chip is configured as a receiving path, and a communication signal can be received through the first terminal.

[0071] When the first chip is configured as a transmission path, the transmission path includes: a TX baseband processor, a DAC, an LPF, a first mixer, an RF RLL, and a PA. The PA is connected to the first antenna through a switch. The first chip can send a communication signal or a radar signal using the transmission path.

[0072] In one design, the transmission path of the first chip can perform the following processing on the signal to be transmitted, and the signal to be transmitted can be a communication signal, or a radar signal, etc., without limitation. The TX baseband processor performs baseband processing on the signal to be transmitted and outputs it to the DAC. The DAC performs digital-to-analog conversion on the signal to be transmitted and outputs it to the LPF. The LPF performs low-pass filtering on the signal to be transmitted and outputs it to the first mixer. The RF RLL is used to generate a signal, which can be a radio frequency signal. The first mixer is used to mix the signal to be transmitted with the signal generated by the RF RLL to generate a radio frequency signal, and output the radio frequency signal to the PA. It can be understood that the signal to be transmitted in the foregoing is a baseband signal. The PA is used to amplify the power of the radio frequency signal, output it to the first antenna through the switch, and the first antenna transmits the radio frequency signal through the air interface. It can be understood that if the signal to be transmitted is a communication signal, then the radio frequency signal is a communication signal. Alternatively, if the signal to be transmitted is a radar signal, then the radio frequency signal is a radar signal.

[0073] When the path of the first chip is configured as a receiving path, the receiving path includes: LNA, a second mixer, LPF, ADC and an RX baseband processor. The LNA is connected to the first antenna through a switch. The first chip can receive radar signals using the receiving path. Optionally, a variable gain amplifier (VGA) can also be included between the second mixer and the LPF.

[0074] In one design, the receiving path of the second chip can perform the following processing on the received radar signal. It can be understood that the received radar signal is a radio frequency signal. The LNA is used to perform low noise power amplification on the received radar signal and output it to the second mixer. The RF RLL is used to generate a signal, which can be a radio frequency signal. The second mixer is used to mix the radar signal and the radio frequency signal generated by the RF RLL to generate a baseband signal, and output the baseband signal to the LPF. The LPF is used to perform low pass filtering on the baseband signal and output it to the ADC. The ADC is used to perform analog-to-digital conversion on the baseband signal and output it to the RX baseband processor. The RX baseband processor is used to perform baseband processing on the baseband signal.

[0075] like Figure 4 As shown, it can be seen that the transmitting path and the receiving path in the first chip share one RF RLL and one LPF, which reduces the number of RF RLLs and LPFs in the first chip, thereby reducing the area of ​​the first chip and reducing the cost of the first chip.

[0076] In the embodiment of the present application, the second chip does not participate in any communication service, the second chip only receives radar signals for sensing, and the path in the second chip can always be configured as a receiving path. Figure 5 As shown, the second chip includes at least one of the following components: LNA, a third mixer, RF RLL, LPF, ADC, or RX baseband. Optionally, a VGA may also be included between the third mixer and the LPF.

[0077] Wherein, the LNA can be connected to the second antenna, the second antenna can receive the radar signal, and send the received radar signal to the LNA. The LNA performs low-frequency amplification on the radar signal and outputs it to the third mixer. The RF RLL is used to generate a signal, which can be a radio frequency signal. It can be understood that the radar signal received by the second antenna in the foregoing text is a radio frequency signal. The third mixer is used to mix the radar signal and the signal generated by the RF RLL to generate a baseband signal, and output it to the LPF. The LPF is used to perform low-pass filtering on the baseband signal and output it to the ADC. The ADC is used to perform analog-to-digital conversion on the baseband signal and output it to the RX baseband processor. The RX baseband processor is used to perform baseband processing on the baseband signal.

[0078] Optionally, the second chip may further include at least one of the following elements: a TX baseband processor, a DAC, a fourth mixer, a PA, or a switch. That is, in one design, the second chip and the first chip may adopt the same design. The difference is that since the second chip only involves receiving radar signals, the second chip may always be configured as a receiving path. It should be noted that when the second chip includes a switch, since the second chip is always configured as a receiving path, the switch is always connected to the second antenna and the LNA, that is, the second antenna and the LNA are always in a connected state.

[0079] Through the above design, the circuit device includes a first chip and a second chip. Among them, the first chip is used to perform communication services and send radar signals, and the second chip is used to receive radar signals. The perception result can be obtained by analyzing and / or processing the received radar signal. The acquisition of the perception result no longer depends on the communication signal, thereby reducing the impact of the communication signal on perception. Furthermore, in the original circuit device for realizing communication, the original circuit device includes a first chip, and an additional second chip for realizing perception is added, which has little impact on the original circuit device. The solution of the embodiment of the present application is compatible with the original circuit device.

[0080] [Example 2]

[0081] In one design, the first channel includes a first circuit, the second channel includes a second circuit, and the first circuit and the second circuit belong to the same chip. In this second embodiment, the "first channel" in the foregoing text can be replaced by "first circuit", and the "second channel" can be replaced by "second circuit".

[0082] like Figure 6 As shown, a circuit device is provided, which can be a part of a circuit board, that is, the circuit board includes Figure 6 In addition to the circuit arrangement shown, other components may also be included. Alternatively, the circuit arrangement may be the entire circuit board, i.e. Figure 6 The circuit arrangement shown may be a specific implementation of a circuit board. Figure 6 As shown, the circuit device includes:

[0083] The first circuit can send communication signals or radar signals, etc. through the first antenna.

[0084] Optionally, the first circuit may be connected to a first antenna, and a communication signal or a radar signal may be sent through the first antenna. The first circuit may be a transmitting circuit.

[0085] The second circuit can receive a communication signal through the first antenna or a radar signal through the second antenna, etc.

[0086] Optionally, at a certain moment, the second circuit may be connected to the first antenna, and the communication signal may be received through the first antenna. Alternatively, the second circuit may be connected to the second antenna, and the radar signal may be received through the second antenna.

[0087] A clock circuit is connected to the first circuit and the second circuit respectively, and is used to provide a reference clock for the first circuit and the second circuit, thereby ensuring that the clocks of the first circuit and the second circuit are consistent.

[0088] It can be understood that the clock circuit is connected to the first circuit and the second circuit, and the connection can be a direct connection or an indirect connection, etc., without limitation.

[0089] It can be understood that in the embodiments of the present application, the first circuit and the second circuit can be integrated together, for example, the first circuit and the second circuit can be integrated into one chip, etc., without limitation.

[0090] In one design, the first circuit includes a first switch, a first end of the first switch is connected to the first day, a second end of the first switch is connected to the PA in the first circuit, and a third end of the first switch is connected to the second circuit. For example, the second circuit includes a second switch, and the third end of the first switch can be connected to the first end of the second switch. Alternatively, when the second circuit includes a front-stage LNA0, the third end of the first switch can be connected to the first end of the second switch through the front-stage LNA0.

[0091] In one implementation, the first circuit is a transmitting circuit. The first circuit includes at least one of the following elements: a TX baseband processor, a DAC, a first LPF, a fifth mixer, an RF RLL, a PA, or a first switch.

[0092] Regarding the processing process of the signal to be sent by each component in the first circuit, refer to the description in the previous text. It is understandable that the signal to be sent can be a communication signal or a radar signal. That is, the first circuit can be used to send a communication signal or a radar signal. It is understandable that when the first circuit is used to send a communication signal or a radar signal, the first switch needs to connect the PA and the first antenna, that is, the PA and the first switch are in a connected state.

[0093] In one design, the second circuit includes a second switch, a first end of the second switch is connected to a third end of the first switch, a second end is connected to the second antenna, and a third end is connected to a first LNA in the second circuit. Optionally, the first LNA may be referred to as a post-stage LNA.

[0094] In one implementation, the second circuit may be a receiving circuit. The second circuit includes at least one of the following elements: an RX baseband processor, an ADC, a second LPF, a sixth mixer, a post-stage LNA, an RF PLL, or a second switch. Optionally,

[0095] A VGA may also be included between the sixth mixer and the second LPF.

[0096] For each component in the second circuit and the processing process of the received signal, please refer to the description in the previous text. Different from the first embodiment, the second circuit can receive the communication signal through the first antenna, or receive the radar signal through the second antenna. The second switch can switch between receiving the communication signal or the radar signal by switching. For example, in one implementation, when the first switch is connected to the second switch, the second circuit can receive the communication signal through the first antenna. Alternatively, when the second switch is connected to the second antenna, the second circuit can receive the radar signal through the second antenna.

[0097] Optionally, the second circuit may further include: a second LNA and a third LNA, the second LNA being located between the first end of the second switch and the third end of the first switch, and the third LNA being located between the second end of the second switch and the second antenna. The second LNA may be referred to as a pre-stage LNA0, and the third LNA may be referred to as a pre-stage LNA1.

[0098] The second chip in the above-mentioned embodiment 1 includes one LNA. Different from the above-mentioned embodiment 1, the second circuit in the embodiment 2 includes three LNAs, which are respectively called the post-stage LNA, the pre-stage LNA0, and the pre-stage LNA1. For the positions of the three LNAs, please refer to Figure 7 In one design, the front-stage LNA0 and the rear-stage LNA cooperate to perform low-noise amplification on the received communication signal. The front-stage LNA1 and the rear-stage LNA cooperate to perform low-noise amplification on the received radar signal. In one design, in the solution of the second embodiment, compared with the design of the original chip, the addition of the second switch may cause the deterioration of the noise coefficient of the entire chip. Through the solution of the front-stage LNA and the rear-stage LNA, the system noise of the received communication signal or radar signal can be reduced, and the signal-to-noise ratio of the received signal can be improved.

[0099] It should be noted that in the above description, it is emphasized that the second circuit may include a post-stage LNA, and may further include a pre-stage LNA0 and a pre-stage LNA1. That is, when the second circuit only includes a post-stage LNA, it is within the protection scope of the embodiment of the present application. Alternatively, when the second circuit includes a post-stage LNA, a pre-stage LNA0 and a pre-stage LNA1 at the same time, it is also within the protection scope of the embodiment of the present application. Alternatively, in the embodiment of the present application, the second circuit may only include a pre-stage LNA0 and a pre-stage LNA1. Further, the second circuit may also include a post-stage LNA. That is, when the second circuit only includes a pre-stage LNA0 and a pre-stage LNA1, it is also within the protection scope of the embodiment of the present application.

[0100] It should be noted that in the solution of the second embodiment, the first circuit and the second circuit may work at the same time. Therefore, corresponding LPFs need to be set in the first circuit and the second circuit respectively, so as to ensure that when the first circuit and the second circuit work at the same time, corresponding LPFs are available. Among them, the LPF included in the first circuit is called the first LPF. The LPF included in the second circuit is called the second LPF. For example, the first circuit is used to send communication signals and radar signals. The second circuit is used to receive communication signals or radar signals. Since the reception of radar signals and the transmission of radar signals overlap in time. Therefore, the first circuit and the second circuit work at the same time.

[0101] Optionally, in this second embodiment, the first circuit is used to send a communication signal and a radar signal through the first day. The second circuit is used to receive a communication signal through the first antenna and a radar signal through the second antenna. In the second embodiment of the present application, a circuit device (for example, a chip) including the first circuit and the second circuit can operate in a communication state and a perception state in a time-division manner. Among them, when the circuit device operates in a communication state, the first circuit can send a communication signal through the first antenna, and the second circuit can receive a communication signal through the first antenna. When the circuit device operates in a perception state, the second circuit can send a radar signal through the first antenna, and send an indication message to the second circuit to instruct the second circuit to start receiving the radar signal. When the second circuit receives the indication message, the second circuit can receive the radar signal through the second antenna. For a specific description of the circuit device operating in a communication state and a perception state in a time-division manner, please refer to the description in the first embodiment.

[0102] In the second embodiment, the circuit device includes a first circuit and a second circuit, the first circuit is used to send communication signals and radar signals through the first antenna, the second circuit is used to receive communication signals through the first antenna and receive radar signals through the second antenna, and the second circuit or other devices can obtain perception results by analyzing and / or processing the received radar signals. Through the solution of the embodiment of the present application, the integration of communication function and radar perception function can be achieved.

[0103] The embodiment of the present application further provides a communication device, which includes the circuit device described above. In one design, the communication device may be a WLAN device, such as an AP or a STA.

[0104] In the various embodiments of the present application, unless otherwise specified or provided for in any logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0105] In the present application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of the present application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of the present application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0106] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Claims

1. A circuit device, characterized in that: include: A first channel, used for sending communication signals and radar signals through a first antenna; A second channel is used to receive the radar signal through a second antenna, wherein the radar signal is used to achieve perception; The first channel or the second channel is further used to receive the communication signal through the first antenna; A clock circuit is connected to the first channel and the second channel, and is used to provide a reference clock for the first channel and the second channel.

2. The device according to claim 1, characterized in that The first channel includes a first chip, the second channel includes a second chip, and the first chip receives the communication signal through the first antenna.

3. The device according to claim 1, characterized in that The first channel includes a first circuit, the second channel includes a second circuit, the first circuit and the second circuit belong to the same chip, and the second circuit is used to receive the communication signal through the first antenna.

4. The device according to claim 3, characterized in that The first circuit includes a first switch, a first end of the first switch is connected to the first antenna, a second end of the first switch is connected to a power amplifier PA in the first circuit, and a third end of the first switch is connected to a first end of a second switch in the second circuit.

5. The device according to claim 4, characterized in that The second circuit includes a second switch, a first end of the second switch is connected to the third end of the first switch, a second end of the second switch is connected to the second antenna, and a third end of the second switch is connected to a first low noise amplifier LNA in the second circuit.

6. The device according to claim 5, characterized in that The second circuit further includes: a second LNA and a third LNA, the second LNA is located between the first end of the second switch and the third end of the first switch, and the third LNA is located between the second end of the second switch and the second antenna.

7. The device according to any one of claims 3 to 6, characterized in that The first circuit includes a first low-pass filter LPF, and the second circuit includes a second LPF.

8. The device according to any one of claims 1 to 7, characterized in that The first channel is further used to: when sending the radar signal, send indication information to the second channel, where the indication information is used to instruct the second channel to receive the radar signal.

9. The device according to any one of claims 1 to 8, characterized in that The first channel operates in a communication state and a sensing state in a time-division manner; Wherein, when the first channel operates in the communication state, the first channel is used to send and / or receive the communication signal; or, When the first channel operates in the sensing state, the first channel is used to send the radar signal.

10. The device according to any one of claims 1 to 9, characterized in that Before sending the radar signal, the first channel further includes: The first channel sends a control signal, and the control signal is used to notify other communication devices that the first channel occupies a wireless channel.

11. The device according to claim 10, characterized in that The control signal includes a first field, and the first field includes indication information of the time that the first channel occupies the wireless channel.

12. A communication device, characterized in that: The invention comprises a circuit arrangement as claimed in any one of claims 1 to 11.

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