Short-range communication device, chip and control method

Abstract

An embodiment of the present application provides a short-range communication device, a chip, and a control method. The device includes a gain unit coupled to an antenna; a first radio frequency (RF) receiving channel coupled to the gain unit; a first baseband processor coupled to the first RF receiving channel for receiving a first signal from the antenna through the first RF receiving channel; a second RF receiving channel coupled to the gain unit; a second baseband processor coupled to the second RF receiving channel for receiving a second signal from the antenna through the second RF receiving channel. A first bypass switch is disposed between the second RF receiving channel and the gain unit, and the first bypass switch is configured to selectively bypass at least one gain device in the gain unit. The present application can effectively improve the anti-interference ability and throughput of the device.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of short - range communication, and in particular, to a short - range communication device, a chip, and a control method. Background Art

[0002] Currently, in the mechanism where a Bluetooth module and a wireless fidelity (Wi - Fi) module share a Low Noise Amplifier (LNA), a priority control mechanism is usually adopted. That is, the module with a higher priority can obtain the control right of the shared LNA to control the gain level of the shared LNA.

[0003] However, in this mechanism, since the adjustment thresholds corresponding to different gain levels of the Bluetooth module and the Wi - Fi module for signals are different, after the gain level of the shared LNA is adjusted, problems such as a decrease in the anti - interference ability of the Bluetooth module or a reduction in the throughput of the Wi - Fi module may occur. Summary of the Invention

[0004] To solve the above - mentioned technical problems, the present application proposes a short - range communication device, a chip, and a control method, thereby effectively improving the anti - interference ability and throughput of the device.

[0005] In a first aspect, a short - range communication device is provided. The device includes a gain unit coupled to an antenna; a first radio frequency (RF) receiving channel coupled to the gain unit; a first baseband processor coupled to the first RF receiving channel for receiving a first signal from the antenna through the first RF receiving channel; a second RF receiving channel coupled to the gain unit; and a second baseband processor coupled to the second RF receiving channel for receiving a second signal from the antenna through the second RF receiving channel. A first bypass switch is provided between the second RF receiving channel and the gain unit, and the first bypass switch is used to selectively bypass at least one gain device in the gain unit. In this way, the present application can effectively improve the anti - interference ability and throughput of the device. Exemplarily, the first baseband processor may be a Wi - Fi baseband module, the second baseband processor may be a Bluetooth baseband module. Correspondingly, the first signal may be a Wi - Fi signal, and the second signal may be a Bluetooth signal. Exemplarily, the first baseband processor and the second baseband processor may also be other baseband processors, baseband modules, or chips applied to short - range communication.

[0006] According to the first aspect, the gain unit includes: a first low-noise amplifier (LNA), the input end of the first LNA is coupled to the antenna, and the output end of the first LNA is coupled to the first RF receiving channel; a first bypass switch is respectively coupled to the output end and the input end of the first LNA, and is used to selectively bypass the first LNA. In this way, by bypassing the first LNA, the adjustment of the gain amplitude of the first LNA is no longer affected by the intensity of the second signal, thereby effectively improving the throughput of the first baseband processor. Moreover, when the first LNA is bypassed, the gain amplitude of the second signal can be reduced. Exemplarily, the first LNA can be an external LNA or an internal LNA.

[0007] According to the first aspect, or any one of the implementation manners of the above first aspect, the first bypass switch is used to selectively bypass the first LNA according to whether the intensity of the second signal is greater than a first threshold. In this way, based on the intensity of the second signal, by bypassing the first LNA to control the gain amplitude of the second signal input to the second baseband processor, without adjusting the gain level of the first LNA.

[0008] According to the first aspect, or any one of the implementation manners of the above first aspect, the gain unit includes: a first LNA and a power attenuator, the output end of the first LNA is respectively coupled to the first RF receiving channel and the input end of the power attenuator, and the input end of the first LNA is coupled to the antenna; a first bypass switch is respectively coupled to the input end and the output end of the power attenuator, and is used to selectively bypass the power attenuator. In this way, by selectively bypassing the power attenuator, the gain amplitude of the second signal input to the second baseband processor is controlled, without adjusting the gain level of the first LNA.

[0009] According to the first aspect, or any one of the implementation manners of the above first aspect, the first bypass switch is used to selectively bypass the power attenuator according to whether the intensity of the second signal is greater than a second threshold. In this way, based on the intensity of the second signal, by selectively bypassing the power attenuator, the gain amplitude of the second signal input to the second baseband processor is controlled, without adjusting the gain level of the first LNA.

[0010] According to the first aspect, or any implementation of the above first aspect, a second bypass switch is provided between the first LNA and the power attenuator. The second bypass switch is respectively coupled to the input end and the output end of the first LNA, and the second bypass switch is used to selectively bypass the first LNA; the first bypass switch is respectively coupled to the input end and the output end of the power attenuator, and is used to selectively bypass the power attenuator. In this way, by selectively bypassing the first LNA and selectively bypassing the power amplifier, the gain amplitude of the second signal input to the second baseband processor can be controlled without adjusting the gain level of the first LNA.

[0011] According to the first aspect, or any implementation of the above first aspect, the first bypass switch is used to selectively bypass the power attenuator according to whether the intensity of the second signal is greater than a third threshold; the second bypass switch is used to selectively bypass the first LNA according to whether the intensity of the second signal is greater than a fourth threshold; the third threshold is greater than the fourth threshold. In this way, based on the intensity of the second signal, by selectively bypassing the first LNA and selectively bypassing the power amplifier, the gain amplitude of the second signal input to the second baseband processor can be controlled without adjusting the gain level of the first LNA.

[0012] According to the first aspect, or any implementation of the above first aspect, a second LNA is provided between the first LNA and the antenna; the first LNA is integrated with the first RF receiving channel, the first baseband processor, the second RF receiving channel, and the second baseband processor.

[0013] According to the first aspect, or any implementation of the above first aspect, the second baseband processor is used to control the closed state of the first bypass switch.

[0014] According to the first aspect, or any implementation of the above first aspect, the first baseband processor is used to control the gain level of the first LNA.

[0015] According to the first aspect, or any implementation of the above first aspect, the first RF receiving path is provided with at least one of the following components: an internal LNA, a mixer, a receive analog baseband RX ABB.

[0016] According to the first aspect, or any implementation of the above first aspect, the second RF receiving path is provided with at least one of the following components: an internal LNA, a mixer, an RX ABB.

[0017] Second aspect, a chip, characterized in that it includes: a first radio frequency (RF) receiving channel, coupled to a gain unit, wherein the gain unit is coupled to an antenna; a first baseband processor, configured to receive a first signal from the antenna through the first RF receiving channel; a second RF receiving channel, coupled to the gain unit; a second baseband processor, configured to receive a second signal from the antenna through the second RF receiving channel, wherein a first bypass switch is disposed between the second RF receiving channel and the gain unit; and the second baseband processor is further configured to control the first bypass switch to selectively bypass at least one gain device in the gain unit.

[0018] According to the second aspect, the gain unit includes: a first low-noise amplifier (LNA), an input end of the first LNA is coupled to the antenna, and an output end of the first LNA is coupled to the first RF receiving channel; the first bypass switch is respectively coupled to the output end and the input end of the first LNA; and the second baseband processor is specifically configured to selectively bypass the first LNA.

[0019] According to the second aspect, or any implementation manner of the second aspect above, the second baseband processor is configured to control the first bypass switch to selectively bypass the first LNA according to whether the intensity of the second signal is greater than a first threshold.

[0020] According to the second aspect, or any implementation manner of the second aspect above, the gain unit includes: a first LNA and a power attenuator, an output end of the first LNA is respectively coupled to the first RF receiving channel and an input end of the power attenuator, and an input end of the first LNA is coupled to the antenna; the first bypass switch is respectively coupled to the input end and the output end of the power attenuator; and the second baseband processor is specifically configured to control the first bypass switch to selectively bypass the power attenuator.

[0021] According to the second aspect, or any implementation manner of the second aspect above, the second baseband processor is configured to control the first bypass switch to selectively bypass the power attenuator according to whether the intensity of the second signal is greater than a second threshold.

[0022] According to the second aspect, or any implementation manner of the second aspect above, a second bypass switch is disposed between the first LNA and the power attenuator, the second bypass switch is respectively coupled to the input end and the output end of the first LNA, and the first bypass switch is respectively coupled to the input end and the output end of the power attenuator, and is configured to selectively bypass the power attenuator. The second baseband processor is further configured to control the second bypass switch to selectively bypass the first LNA; and control the first bypass switch to selectively bypass the power attenuator.

[0023] According to a second aspect, or any implementation of the above second aspect, a second baseband processor is configured to control a first bypass switch to selectively bypass a power attenuator according to whether the intensity of a second signal is greater than a third threshold; the second baseband processor is configured to control a second bypass switch to selectively bypass a first LNA according to whether the intensity of the second signal is greater than a fourth threshold; the third threshold is greater than the fourth threshold.

[0024] According to a second aspect, or any implementation of the above second aspect, the first baseband processor is further configured to control the gain level of the first LNA.

[0025] According to a second aspect, or any implementation of the above second aspect, the first bypass switch is integrated in the chip.

[0026] According to a second aspect, or any implementation of the above second aspect, at least one gain device in the gain unit is integrated in the chip.

[0027] According to a second aspect, or any implementation of the above second aspect, the first RF receiving path is provided with at least one of the following components: a built-in first LNA, a mixer, and a receive analog baseband RX ABB.

[0028] According to a second aspect, or any implementation of the above second aspect, the second RF receiving path is provided with at least one of the following components: a built-in first LNA, a mixer, and an RX ABB.

[0029] A third aspect, an embodiment of the present application provides a control method, which is applied to a short-distance communication device. The method includes: receiving a first signal from an antenna through a first radio frequency RF receiving channel, where the first RF receiving channel is coupled to a gain unit, and the gain unit is coupled to the antenna; receiving a second signal from the antenna through a second RF receiving channel, where the second RF receiving channel is coupled to the gain unit, and a first bypass switch is provided between the second RF receiving channel and the gain unit; controlling the first bypass switch to selectively bypass at least one gain device in the gain unit.

[0030] According to the third aspect, the gain unit includes a first low noise amplifier LNA; the controlling the first bypass switch to selectively bypass at least one gain device in the gain unit includes: controlling the first bypass switch to selectively bypass the first LNA according to whether the intensity of the second signal is greater than a first threshold.

[0031] According to a third aspect, or any one of the implementation manners of the above third aspect, the gain unit includes a first LNA and a power attenuator; controlling the first bypass switch to selectively bypass at least one gain device in the gain unit includes: controlling the first bypass switch to selectively bypass the power attenuator according to whether the intensity of the second signal is greater than a second threshold.

[0032] According to a third aspect, or any one of the implementation manners of the above third aspect, a second bypass switch is disposed between the first LNA and the power attenuator; controlling the first bypass switch to selectively bypass at least one gain device in the gain unit includes: controlling the first bypass switch to selectively bypass the power attenuator according to whether the intensity of the second signal is greater than a third threshold; controlling the second bypass switch to selectively bypass the first LNA according to whether the intensity of the second signal is greater than a fourth threshold; the third threshold is greater than the fourth threshold.

[0033] According to a third aspect, or any one of the implementation manners of the above third aspect, the method further includes: controlling the gain level of the first LNA according to the intensity of the first signal. Description of the Drawings

[0034] Figure 1 A schematic structural diagram of a terminal device shown for illustration purposes;

[0035] Figure 2 A schematic structural diagram of a short-range communication device shown for illustration purposes;

[0036] Figure 3 A schematic structural diagram of a short-range communication device shown for illustration purposes;

[0037] Figure 4 A schematic diagram of a communication system provided by an embodiment of the present application;

[0038] Figure 5 A schematic structural diagram of a short-range communication device provided by an embodiment of the present application;

[0039] Figure 6 A schematic flowchart of a control method provided by an embodiment of the present application;

[0040] Figure 7 A schematic structural diagram of a short-range communication device provided by an embodiment of the present application;

[0041] Figure 8 A schematic flowchart of a control method provided by an embodiment of the present application;

[0042] Figure 9Schematic structural diagram of a short - distance communication device provided by an embodiment of the present application;

[0043] Figure 10 Schematic flowchart of a control method provided by an embodiment of the present application;

[0044] Figure 11 Schematic structural diagram of a short - distance communication device provided by an embodiment of the present application;

[0045] Figure 12 Schematic flowchart of a control method provided by an embodiment of the present application;

[0046] Figure 13 Schematic structural diagram of a short - distance communication device provided by an embodiment of the present application;

[0047] Figure 14 Schematic flowchart of a control method provided by an embodiment of the present application;

[0048] Figure 15 Schematic structural diagram of a device provided by an embodiment of the present application;

[0049] Figure 16 Schematic structural diagram of a chip provided by an embodiment of the present application. Detailed implementation manners

[0050] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0051] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. These three situations.

[0052] The terms "first" and "second" in the description and claims of the embodiments of the present application are used to distinguish different objects, rather than to describe a specific order of the objects. For example, the first target object and the second target object are used to distinguish different target objects, rather than to describe a specific order of the target objects.

[0053] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0054] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" refers to two or more. For example, a plurality of processing units refers to two or more processing units; a plurality of systems refers to two or more systems.

[0055] Figure 1 The structural diagram of a terminal device with a single antenna is shown. In an actual scenario, the terminal device can also be a multi-antenna device, and can be a device with more than two antennas. For the sake of convenience of description, Figure 1 only the main components of the terminal device are shown. As Figure 1 shown, the terminal device 100 includes a processor, a memory, a control circuit, an antenna, and an input / output device. The processor is mainly used to process communication protocols and communication data, and to control the entire terminal device, execute software programs, and process the data of the software programs, for example, to support the actions described in the embodiments of the present application of the terminal device. The memory is mainly used to store software programs and data, for example, to store the correspondence between the thresholds and radio frequency (RF) paths described in the embodiments of the present application. The control circuit is mainly used for the conversion between baseband signals and RF signals and the processing of RF signals. The control circuit and the antenna together can also be called a transceiver, which is mainly used to transmit and receive RF signals in the form of electromagnetic waves. The input / output device, such as a touch screen, a display screen, a keyboard, etc., is mainly used to receive data input by the user and output data to the user.

[0056] After the terminal device is powered on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be wirelessly transmitted, after the processor performs baseband processing on the data to be transmitted, it outputs a baseband signal to the RF circuit, and the RF circuit performs RF processing on the baseband signal and then transmits the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0057] Those skilled in the art can understand that for the sake of convenience of description, Figure 1Only one memory and one processor are shown. In an actual terminal device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or a storage device, etc., and the embodiments of the present application do not limit this.

[0058] As an optional implementation, the processor may include a baseband processor and / or a central processor. The baseband processor is mainly used to process communication protocols and communication data, and the central processor is mainly used to control the entire terminal device, execute software programs, and process the data of software programs. Figure 1 The processor in [the relevant context] may integrate the functions of the baseband processor and the central processor. Those skilled in the art can understand that the baseband processor and the central processor may also be independent processors, interconnected through technologies such as a bus. Those skilled in the art can understand that a terminal device may include multiple baseband processors to adapt to different network modes, a terminal device may include multiple central processors to enhance its processing capabilities, and various components of the terminal device may be connected through various buses. The baseband processor may also be referred to as a baseband processing circuit or a baseband processing chip. The central processor may also be referred to as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data may be built into the processor or stored in a storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

[0059] In the embodiments of the present application, an antenna and a control circuit with transceiver functions may be regarded as the transceiver unit 101 of the terminal device 100. For example, it is used to support the terminal device to execute receiving and sending functions. The processor with processing functions is regarded as the processing unit 102 of the terminal device 100. As Figure 1 shown, the terminal device 100 includes a transceiver unit 101 and a processing unit 102. The transceiver unit may also be referred to as a transceiver, a transceiver machine, a transceiver device, etc. Optionally, the devices in the transceiver unit 101 used to implement the receiving function may be regarded as the receiving unit, and the devices in the transceiver unit 101 used to implement the sending function may be regarded as the sending unit. That is, the transceiver unit 101 includes a receiving unit and a sending unit. The receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the sending unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0060] The processor 102 may be used to execute the instructions stored in the memory to control the transceiver unit 101 to receive signals and / or send signals, and complete the functions of the terminal device in the embodiments of the present application. As an implementation, the functions of the transceiver unit 101 may be considered to be implemented through a transceiver circuit or a dedicated transceiver chip.

[0061] In the description of the embodiments of the present application, the terminal device is a terminal product that supports 802.11 series standards and Bluetooth standards. The terminal device can be a wireless communication chip, a wireless sensor, a wireless communication terminal, etc., and can also be referred to as a user, a station, or a terminal. For example, the station can be a mobile phone supporting Wi-Fi and Bluetooth communication functions, a tablet computer supporting Wi-Fi and Bluetooth communication functions, a set-top box supporting Wi-Fi and Bluetooth communication functions, a smart TV supporting Wi-Fi and Bluetooth communication functions, a smart wearable device supporting Wi-Fi and Bluetooth communication functions, a vehicle-mounted communication device supporting Wi-Fi and Bluetooth communication functions, and a computer supporting Wi-Fi and Bluetooth communication functions, etc. Optionally, the 802.11 series includes but is not limited to at least one of the following: various WLAN systems of the 802.11 family such as 802.11be, 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

[0062] Wireless local area networks (WLANs) (such as Wi-Fi networks) can provide high-rate and low-latency transmission. With the continuous evolution of WLAN application scenarios, WLAN systems will be applied to more scenarios or industries. For example, they can be applied to the Internet of Things industry, the vehicle-to-everything industry, the banking industry, enterprise offices, stadiums and exhibition halls, concert halls, hotel rooms, dormitories, wards, classrooms, shopping malls, squares, streets, production workshops, and warehouses, etc. Of course, devices supporting WLAN communication (such as access points or stations) can be sensor nodes in a smart city (such as smart water meters, smart electricity meters, smart air detection nodes), smart devices in a smart home (such as smart cameras, projectors, displays, televisions, speakers, refrigerators, washing machines, etc.), nodes in the Internet of Things, entertainment terminals (such as AR, VR, etc. wearable devices), smart devices in smart offices (such as printers, projectors, loudspeakers, speakers, etc.), vehicle-to-everything devices in the vehicle-to-everything network, infrastructure in daily life scenarios (such as vending machines, self-guided navigation desks in shopping malls, self-checkout devices, self-ordering machines, etc.), and devices in large sports or music stadiums. In the embodiments of the present application, no special restrictions are imposed on the specific form of the terminal device, and only exemplary descriptions are provided here.

[0063] Bluetooth (BT) is a wireless communication technology standard that enables mobile devices to exchange data over short distances to form a personal area network. It uses short-baud high-frequency radio waves to communicate via the ISM (Industrial Scientific Medical) band from 2.4 to 2.485 GHz, and the communication distance ranges from a few meters to several hundred meters.

[0064] In a scenario where Bluetooth and Wi-Fi functions coexist, to reduce costs and minimize the circuit layout area, a structure that shares an antenna and an LNA between a Bluetooth module and a Wi-Fi module is typically adopted. Exemplarily, the shared LNA may include a shared external LNA, a shared internal LNA, or a combination of a shared external LNA and a shared internal LNA. The number of shared LNAs can be one or more.

[0065] As Figure 2 shown in the schematic diagram of a circuit structure shown by way of example, referring to Figure 2 , exemplarily, the BTDBB (digital baseband) and the Wi-Fi DBB share an external LNA and an antenna. The terminal device can receive Wi-Fi signals and Bluetooth signals through the antenna, and after passing through the external LNA, the signals are divided into two paths (Bluetooth signal and Wi-Fi signal). Among them, the Bluetooth signal is transmitted to the BT DBB through radio frequency path 1, and the Wi-Fi signal is transmitted to the Wi-Fi DBB through radio frequency path 2.

[0066] Exemplarily, radio frequency path 1 includes, but is not limited to, devices such as an internal LNA, a mixer, and an RX ABB (receive analog baseband). Devices such as an internal LNA, a mixer, and an RX ABB are provided on radio frequency path 2. Optionally, the BT DBB and the Wi-Fi DBB are electrically connected to the internal LNA and the external LNA respectively, for example, through a control line to transmit control signals (or indication signals).

[0067] Still referring to Figure 2 , the circuit further includes radio frequency path 3. The BT DBB and the Wi-Fi DBB are coupled to radio frequency path 3, and radio frequency path 3 is coupled to the antenna. The BT DBB and the Wi-Fi DBB transmit Bluetooth signals or Wi-Fi signals to the antenna through radio frequency path 3 and are emitted by the antenna. Devices such as a TX ABB (Transmit analog baseband), a single-pole double-throw switch, a mixer, an internal PA, and an external PA are provided on radio frequency path 3. It should be noted that the radio frequency paths described in this application can also be referred to as circuits, processing circuits, transmission circuits, etc. This application does not make a limitation and will not be repeated hereinafter.

[0068] Combined with Figure 2, Exemplarily, an arbitration mechanism, also known as a priority mechanism, is adopted in the terminal device. Its principle is that in the scenario where Bluetooth signals and Wi-Fi signals coexist, that is, when both the BT DBB and the Wi-Fi DBB are enabled, since the BT DBB and the Wi-Fi DBB share the LNA, it is necessary to determine who controls the gain level of the shared LNA. It can also be understood as the attribution of the control right of the shared LNA. Optionally, the module with a higher priority (referring to the BT DBB or the Wi-Fi DBB) can obtain the control right of the shared LNA (such as an external LNA). Among them, the priority is determined by the processor and sent to the BT DBB and the Wi-Fi DBB.

[0069] For example, referring to Figure 2 , if the priority of the BT DBB is higher than that of the Wi-Fi DBB, the BT DBB obtains the control right of the external LNA. When the BT DBB detects that the signal strength of the Bluetooth signal is higher than the switching threshold of Bluetooth (also known as the switching threshold of the BT DBB), the BT DBB sends a control signal to the external LNA through the control line to control the external LNA to downshift, that is, to set the external LNA to a low gain level. If the priority of the Wi-Fi DBB is higher than that of the BT DBB, the Wi-Fi DBB obtains the control right of the external LNA. When the Wi-Fi DBB detects that the signal strength of the Wi-Fi signal is higher than the switching threshold of Wi-Fi (also known as the switching threshold of the Wi-Fi DBB), the Wi-Fi DBB sends a control signal to the external LNA through the control line to control the external LNA to downshift, that is, to set the external LNA to a low gain level. It should be noted that the low gain level described in the embodiments of the present application refers to the level at which the gain of the currently processed signal is reduced. For example, the external LNA is used to increase the gain of the signal, that is, the gain of the signal after passing through the external LNA is greater than the gain of the signal received by the antenna. When the external LNA is in the low gain level, it means that the gain of the signal after passing through the external LNA is reduced. In one example, the gain of the reduced signal may still be greater than the gain of the signal received by the antenna. In another example, the gain of the reduced signal may be less than or equal to the gain of the signal received by the antenna. The present application does not make a limitation. The high gain level refers to increasing the gain of the signal passing through the external LNA, which will not be elaborated below.

[0070] As Figure 3 Another schematic diagram of the circuit structure is exemplarily shown. Referring to Figure 3 , the BT DBB and the Wi-Fi DBB share the antenna, the external LNA, and the internal LNA. The priority mechanism can still be adopted to control the shared external LNA and internal LNA. The specific details are similar to the description in Figure 2 , and will not be elaborated here.

[0071] It should be noted that since BT DBB has a relatively low requirement for the signal-to-noise ratio of Bluetooth signals and a relatively high requirement for anti-interference ability (strong interference easily causes signal saturation), the switching threshold of BT DBB is relatively low, for example, -70 dBm. And since Wi-Fi has a relatively high requirement for the signal-to-noise ratio, the switching threshold of Wi-Fi DBB is relatively high, for example, -50 dBm. When BT DBB controls the external LNA, it will control the external LNA to downshift at a relatively low signal strength (for example, -70 dBm), resulting in a decrease in the signal-to-noise ratio of the Wi-Fi signal, greatly reducing the demodulation ability of Wi-Fi DBB, and further causing a decrease in throughput. When Wi-Fi DBB controls the external LNA, it will control the external LNA to downshift at a relatively high signal strength (for example, -50 dBm), resulting in a decrease in the anti-interference ability of BT DBB.

[0072] Exemplarily, the external LNA may include a high gear and a low gear, with the high gear being on and the low gear being off. The external LNA may also include multiple different gears. For example, it includes multiple different high gears for boosting the signal gain to different extents, and / or includes multiple different low gears for reducing the signal gain to different extents. The built-in LNA is similar and will not be elaborated further below.

[0073] The present application provides a short-range communication device. Exemplarily, the device can be a terminal, or a short-range communication chip in the terminal, or a chipset including a short-range communication chip and off-chip devices. Specifically, the present application sets an additional control circuit on the radio frequency path between the antenna and BT DBB, enabling both BT DBB and Wi-Fi DBB to achieve signal gain control, that is, meeting the anti-interference requirements of Bluetooth while meeting the signal-to-noise ratio requirements of Wi-Fi.

[0074] As Figure 4 shown is a schematic diagram of a communication system provided by an embodiment of the present application. The communication system includes one or more transmitters 100 and one or more receivers 200. The transmitters and receivers in the embodiments of the present application can each include various electronic devices with wireless communication functions. Such electronic devices can be handheld devices, in-vehicle devices, wearable devices (such as smart watches, smart bracelets, wireless earphones, augmented reality devices, virtual reality devices, smart glasses), computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile stations (MS), smart home devices (such as smart refrigerators, smart TVs, smart routers, etc.).

[0075] One example is that when any one of the above-mentioned electronic devices A sends data to another one of the above-mentioned electronic devices B, the electronic device A is the sending device and the electronic device B is the receiving device. Another example is that when any one of the above-mentioned electronic devices A receives data sent by another one of the above-mentioned electronic devices B, the electronic device A is the receiving device and the electronic device B is the sending device.

[0076] Optionally, in the embodiments of the present application, the sending end 100 can send Bluetooth signals and / or Wi-Fi signals to the receiving end 200.

[0077] Although the embodiments of the present application mainly take the network deployed with Wi-Fi and Bluetooth as an example for illustration, those skilled in the art can easily understand that all aspects involved in the present application can be extended to other networks adopting various standards or protocols, such as, high performance radio LAN (HIPERLAN) (a wireless standard similar to the IEEE 802.11 standard, mainly used in Europe), and the use of terminal devices in scenarios where any two or more network functions coexist, such as wide area network (WAN), wireless local area network (WLAN), personal area network (PAN), or other currently known or future-developed networks. Therefore, regardless of the coverage range and wireless access protocol used, all aspects provided by the present application can be applied to any suitable short-range wireless communication network.

[0078] Combined with the above-mentioned Figure 4 schematic diagram of the communication system, the specific implementation of the present application will be introduced below:

[0079] Scenario 1

[0080] As Figure 5 shown is a schematic structural diagram of a short-range communication device provided by an embodiment of the present application. Referring to Figure 5 , the BT DBB540 and the Wi-Fi DBB550 are respectively coupled to the antenna 510 through a radio frequency receiving path and a radio frequency transmitting path. The BT DBB540 receives the Bluetooth signal input by the antenna 510 through the radio frequency receiving path, and the Wi-Fi DBB550 receives the Wi-Fi signal input by the antenna 510 through the radio frequency receiving path. The BT DBB540 and the Wi-Fi DBB550 can respectively output the Bluetooth signal and the Wi-Fi signal to the antenna 510 through the radio frequency transmitting path.

[0081] Exemplarily, in this embodiment, the BT DBB540 is coupled to the antenna 510 through the RF path 1 or the RF path 2. Among them, the following devices are arranged on the RF path 1: an external LNA 521, an internal LNA 522, a mixer 523, an RX ABB 524, etc. The following devices are arranged on the RF path 2: an internal LNA 522, a mixer 523, an RX ABB 524, etc. Exemplarily, there is a single-pole double-throw switch 560 between the RF path 1 and the RF path 2, including a terminal 0, a terminal 1, and a terminal 2. Among them, the terminal 0 is the fixed end, and the terminal 1 and the terminal 2 are the movable ends. The single-pole double-throw switch 560 is used to control the enabling states of the RF path 1 and the RF path 2. That is to say, the switching between the RF path 1 and the RF path 2 is controlled through the single-pole double-throw switch 560, so that the BT DBB540 can be coupled to the antenna 510 through the RF path 1 or the RF path 2. Refer to Figure 5 , the terminal 0 of the single-pole double-throw switch 560 is coupled to the BT DBB540, the terminal 1 is coupled to the input end of the external LNA 521, and the terminal 2 is coupled to the output end of the external LNA 521.

[0082] Optionally, in this embodiment, the external LNA can also be called a shared external LNA, or can be called a gain unit. It should be noted that the device names and quantities on each RF path are only illustrative examples, and the present application does not limit this.

[0083] In one example, if the single-pole double-throw switch 560 is placed at the terminal 1, that is, the terminal 0 is connected to the terminal 1, the RF path 2 is enabled. That is, the antenna 510 transmits the Bluetooth signal to the BT DBB through the RF path 2. In another example, if the single-pole double-throw switch 560 is placed at the terminal 2, that is, the terminal 0 is connected to the terminal 2, the RF path 1 is enabled. That is, the antenna 510 transmits the Bluetooth signal to the BT DBB540 through the RF path 1. It can also be understood that after the single-pole double-throw switch 560 is placed at the terminal 1, the external LNA (i.e., the gain unit) is bypassed.

[0084] Still referring to Figure 5 , the Wi-Fi DBB550 is coupled to the antenna 510 through the RF path 3. Exemplarily, the following devices are arranged on the RF path 3: an external LNA 521, an internal LNA 525, a mixer 526, an RX ABB 527, etc. The antenna 510 can transmit the Wi-Fi signal to the Wi-Fi DBB550 through the RF path 3.

[0085] Still referring to Figure 5, the BT DBB550 and the Wi-Fi DBB550 are coupled to the antenna 510 through the radio frequency transmission path. The radio frequency transmission path is provided with devices such as a switch (which can be a single-pole double-throw switch) 531, a TX ABB532, a mixer 533, a built-in PA (Power Amplifier) 534, and an external PA535. It should be noted that in each drawing of this application (including Figure 5 , Figure 7 , Figure 9 , Figure 11 , Figure 13 ), the radio frequency transmission path shown is only a schematic example, and the devices it includes, the number of devices, and the path, etc. are not limited to the structure defined in the description of this application, and will not be elaborated below.

[0086] The above-mentioned radio frequency receiving path (including radio frequency path 1, radio frequency path 2, and radio frequency path 3) and the radio frequency transmission path are both data transmission radio frequency paths for transmitting corresponding data. In the embodiment of this application, the BT DBB and the single-pole double-throw switch 560 and the built-in LNA522, and the Wi-Fi DBB and the external LNA521 and the built-in LNA525 can also be connected through a control path, that is, electrically connected through a control line for transmitting a control signal or an indication signal. Among them, in the description of the embodiment of this application, the control signal is used to control the closing state of each switch, and the indication signal is used to control the gain level of the LNA. The indication signal can also refer to the relevant instructions sent by the processor, and will not be repeated below.

[0087] Referring to Figure 5 , optionally, the BT DBB540 can send a control signal (i.e., an electrical signal) to the single-pole double-throw switch 560 through the control path connected to the single-pole double-throw switch 560 to control the closing state of the single-pole double-throw switch 560. Optionally, the BT DBB540 can also send an indication signal to the built-in LNA522 through the control path connected to the built-in LNA522 to control the gain level of the built-in LNA522.

[0088] Still referring to Figure 5 , optionally, the Wi-Fi DBB550 can send an indication signal (i.e., an electrical signal) to the external LNA521 and / or the built-in LNA525 through the control path connected between the external LNA521 and the built-in LNA525 to control the gain level change of the external LNA521 and / or the built-in LNA525. Exemplarily, the external LNA521 can include two or more gain levels. In this embodiment and the following embodiments, only the high gain level (i.e., on) and the low gain level (i.e., off) are taken as examples for illustration, and will not be elaborated below.

[0089] Optionally, a switch 536 is provided between the antenna 510, the external LNA 521, and the external PA 535. Exemplarily, the switch 536 is a single-pole double-throw switch, including terminal 0, terminal 1, and terminal 2. Placing the single-pole double-throw switch 536 at terminal 1 or terminal 2 enables the RF receiving path or the RF transmitting path to input or output signals. Optionally, if the terminal device has multiple antennas, the external PA 535 can be coupled to different antennas with the external LNA 521.

[0090] The following combines Figure 5 , and details the control method in the embodiments of the present application. As Figure 6 shown in the schematic flowchart of the control method, in Figure 6 :

[0091] Step 101, the Wi-Fi DBB obtains the control right of the external LNA.

[0092] Specifically, the processor may send indication information to the Wi-Fi DBB 550 to instruct the Wi-Fi DBB 550 to obtain the control right of the external LNA 521. In response to the received indication information, the Wi-Fi DBB 550 determines that it has the control right of the external LNA 521. Optionally, the indication information may include priority information. For example, if the priority is high, it indicates having the control right, otherwise it does not. Optionally, the processor may also send indication information to the BT DBB, and the indication information includes a low priority, that is, it indicates that the BT DBB does not have the control right of the external LNA 521. Optionally, the BT DBB may also be pre-configured to have no control right, that is, it does not require the processor to separately send the indication information.

[0093] Exemplarily, in the initial stage, the gain gear of the external LNA 521 is default set to the high-gain gear, that is, the on state.

[0094] Step 102, the BT DBB and the Wi-Fi DBB respectively receive Bluetooth signals and Wi-Fi signals.

[0095] Exemplarily, in the initial stage, the single-pole double-throw switch 560 is default placed at terminal 2, that is, enabling RF path 1, and the antenna transmits the received Bluetooth signal to the BT DBB 550 through RF path 1.

[0096] Exemplarily, the antenna transmits the received Wi-Fi signal to the Wi-Fi DBB 550 through RF path 3.

[0097] It should be noted that only the scenario where Bluetooth signals coexist with Wi-Fi signals is taken as an example in the embodiments of the present application. In other embodiments, if only Bluetooth signals or Wi-Fi signals exist, the existing technical embodiments can be followed, and the present application does not make any limitations.

[0098] Step 103, the BT DBB determines whether the strength of the Bluetooth signal is greater than or equal to a first switching threshold.

[0099] Exemplarily, in this embodiment, the first switching threshold is taken as -70 dBm for illustration. Specifically, the BTDBB540 determines whether the strength of the Bluetooth signal is greater than or equal to the first switching threshold based on the received Bluetooth signal. In one example, if it is greater than or equal to the first switching threshold, step 104 is executed; if it is less than the first switching threshold, step 102 is repeatedly executed, that is, the Bluetooth signal is continuously received based on radio frequency path 1. It should be noted that in the description of the embodiments of the present application, the strength of the signal (including the strength of the Bluetooth signal and the Wi-Fi signal) refers to the strength of the signal received by the antenna. In other embodiments, the signal strength may also refer to the signal strength received by the BT DBB or the Wi-Fi DBB, and the corresponding switching threshold can be set according to the actual situation, which is not limited in the present application and will not be repeated hereinafter.

[0100] Step 104, the BT DBB controls the single-pole double-throw switch to be placed at terminal 1 to enable radio frequency path 2.

[0101] Exemplarily, if the BT DBB540 determines that the strength of the Bluetooth signal is greater than or equal to -70 dBm, a control signal is sent to the single-pole double-throw switch 560 through the control path between the BT DBB and the single-pole double-throw switch 560 to control the single-pole double-throw switch 560 to be placed at terminal 1 to enable radio frequency path 2. The BT DBB540 receives the Bluetooth signal transmitted by the antenna 510 through radio frequency path 2 to bypass the external LNA (that is, bypass the external LNA), thereby reducing the gain of the Bluetooth signal.

[0102] It should be noted that at this time, the control right of the external LNA is still in the Wi-Fi DBB550, and the external LNA is still in the high-gain gear. That is to say, while the BT DBB reduces the gain of the Bluetooth signal by bypassing the external LNA (that is, bypassing the external LNA), the Wi-Fi signal will still be transmitted to the Wi-Fi DBB after being processed by the external LNA, so as to ensure the signal-to-noise ratio of the Wi-Fi signal under the condition of meeting the anti-interference requirements of the BT DBB.

[0103] Step 105, the Wi-Fi DBB determines whether the strength of the Wi-Fi signal is greater than or equal to a second switching threshold.

[0104] Exemplarily, in this embodiment, the second switching threshold is taken as an example of -50 dBm for illustration. Specifically, Wi-Fi DBB550 determines whether the strength of the received Wi-Fi signal is greater than or equal to the second switching threshold based on the received Wi-Fi signal. In one example, if it is greater than or equal to the second switching threshold, step 106 is executed; if it is less than the second switching threshold, no processing is performed, that is, the Wi-Fi signal continues to be received through the current radio frequency path (i.e., the radio frequency path passing through the external LNA in the high gain gear).

[0105] Step 106, Wi-Fi DBB places the external LNA in the low gain gear.

[0106] Specifically, if Wi-Fi DBB550 determines that the strength of the Wi-Fi signal is greater than or equal to -50 dBm, an indication signal is sent to the external LNA521 through the control path between Wi-Fi DBB550 and the external LNA521 to place the external LNA521 in the low gain gear, that is, to place the external LNA521 in the off state.

[0107] At this time, BT DBB540 can receive the Bluetooth signal through radio frequency path 2, and Wi-Fi DBB550 can receive the Wi-Fi signal through radio frequency path 3 including the external LNA521 placed in the low gain gear.

[0108] Optionally, BT DBB540 and Wi-Fi DBB550 can also transmit the Bluetooth signal or Wi-Fi signal to the antenna through the radio frequency transmission path. For specific details, reference can be made to the embodiments of the prior art, and details are not described in this application again.

[0109] Scenario 2

[0110] As Figure 7 shown is a schematic structural diagram of a short-range communication device provided by an embodiment of the present application. Referring to Figure 7 , BT DBB540 and Wi-Fi DBB550 are respectively coupled to the antenna 510 through the radio frequency receiving path and the radio frequency transmitting path. The BT DBB540 receives the Bluetooth signal input by the antenna 510 through the radio frequency receiving path, and the Wi-Fi DBB550 receives the Wi-Fi signal input by the antenna 510 through the radio frequency receiving path. The BT DBB540 and the Wi-Fi DBB550 can respectively output the Bluetooth signal and the Wi-Fi signal to the antenna 510 through the radio frequency transmitting path.

[0111] Exemplarily, in this embodiment, the BT DBB540 is coupled to the antenna 510 through a radio frequency receiving path (including radio frequency path 1 or radio frequency path 2). Among them, on radio frequency path 1, there are devices such as an external LNA 521, an internal LNA 522, a mixer 523, an RX ABB 524, etc. On radio frequency path 2, there are devices such as an external LNA 521, a power attenuator 710, an internal LNA 522, a mixer 523, an RX ABB 524, etc. Among them, the input end of the external LNA 521 is coupled to the antenna 510, and the input end of the power attenuator 710 is coupled to the external LNA 521. Exemplarily, there is a single-pole double-throw switch 720 between radio frequency path 1 and radio frequency path 2, including terminal 0, terminal 1, and terminal 2. Among them, terminal 0 is the fixed end, and terminal 1 and terminal 2 are the movable ends. Terminal 0 is coupled to the BT DBB540, terminal 1 is coupled to the output end of the power attenuator 710, and terminal 2 is coupled to the input end of the power attenuator 710. This single-pole double-throw switch is used to control the enabling states of radio frequency path 1 and radio frequency path 2. That is to say, by controlling the switching of radio frequency path 1 and radio frequency path 2 through the single-pole double-throw switch 720, the BT DBB540 can be coupled to the antenna 510 through radio frequency path 1 or radio frequency path 2.

[0112] Optionally, in this embodiment, the external LNA 521 and the power attenuator 710 form a gain unit. In one example, if the single-pole double-throw switch 720 is placed at terminal 1, that is, terminal 0 is connected to terminal 1, then radio frequency path 2 is enabled. That is, the antenna 510 transmits Bluetooth signals to the BT DBB540 through radio frequency path 2. In another example, if the single-pole double-throw switch 720 is placed at terminal 2, that is, terminal 0 is connected to terminal 2, radio frequency path 1 is enabled. That is, the antenna 510 transmits Bluetooth signals to the BT DBB540 through radio frequency path 1, that is, the power attenuator 710 in the gain unit is bypassed. It can also be understood that after the single-pole double-throw switch 720 is placed at terminal 1 and radio frequency path 2 is enabled, the Bluetooth signals processed by the external LNA are further processed through the power attenuator, that is, the signals amplified by the external LNA are attenuated in gain.

[0113] Still referring to Figure 7 , the Wi-Fi DBB550 is coupled to the antenna 510 through a radio frequency receiving path (including radio frequency path 3). Exemplarily, on radio frequency path 3, there are devices such as an external LNA 521, an internal LNA 525, a mixer 526, an RX ABB 527, etc. The antenna 510 can transmit Wi-Fi signals to the Wi-Fi DBB550 through radio frequency path 3.

[0114] The BT DBB540 and the Wi-Fi DBB550 are coupled to the antenna 510 through a radio frequency transmitting path.

[0115] Optionally, the BT DBB540 is coupled to the single-pole double-throw switch 720 and the built-in LNA522 through a control path. Optionally, the Wi-Fi DBB550 is coupled to the external LNA521 and the built-in LNA525 through a control path.

[0116] It should be noted that unless otherwise specified, for the parts not described in detail in the device structure and method flow parts of this embodiment and the following embodiments, reference can be made to Figure 5 and Figure 6 the relevant descriptions, which will not be repeated hereinafter.

[0117] Next, in combination with Figure 7 , the control method in the embodiments of the present application will be described in detail. As Figure 8 shown in the schematic flowchart of the control method, in Figure 8 :

[0118] Step 201, the Wi-Fi DBB obtains the control right of the external LNA.

[0119] Step 202, the BT DBB and the Wi-Fi DBB respectively receive a Bluetooth signal and a Wi-Fi signal.

[0120] Step 203, the BT DBB determines whether the intensity of the Bluetooth signal is greater than or equal to a first switching threshold.

[0121] Exemplarily, in this embodiment, the first switching threshold is taken as -70 dBm for illustration. Specifically, the BT DBB540 determines whether the intensity of the Bluetooth signal is greater than or equal to the first switching threshold based on the received Bluetooth signal. In one example, if it is greater than or equal to the first switching threshold, step 204 is executed; if it is less than the first switching threshold, step 202 is repeatedly executed, that is, the Bluetooth signal is continuously received based on the RF path 1.

[0122] Step 204, the BT DBB controls the single-pole double-throw switch to be placed at terminal 1 to enable the RF path 2.

[0123] Exemplarily, if the BT DBB540 determines that the intensity of the Bluetooth signal is greater than or equal to -70 dBm, it sends a control signal to the single-pole double-throw switch 720 through the control path between the BT DBB540 and the single-pole double-throw switch 720 to control the single-pole double-throw switch 720 to be placed at terminal 1 to enable the RF path 2. The BT DBB540 receives the Bluetooth signal transmitted by the antenna 510 through the RF path 2. The power attenuator 710 can process the Bluetooth signal to reduce the gain of the Bluetooth signal. That is to say, the purpose of reducing the gain of the Bluetooth signal can be achieved through the power attenuator. It should be noted that the performance of the power attenuator can be selected according to actual needs, and the present application does not make any limitations.

[0124] It should be noted that at this time, the control right of the external LNA is still with the Wi-Fi DBB550, and the external LNA is still in the high-gain gear, so as to ensure the signal-to-noise ratio of the Wi-Fi signal under the condition of meeting the anti-interference requirements of the BT DBB.

[0125] Step 205, the Wi-Fi DBB determines whether the intensity of the Wi-Fi signal is greater than or equal to the second switching threshold.

[0126] Step 206, the Wi-Fi DBB places the external LNA in the low-gain gear.

[0127] Scenario Three

[0128] As Figure 9 shown is a schematic structural diagram of a short-range communication device provided by an embodiment of the present application. Referring to Figure 9 , the BT DBB540 and the Wi-Fi DBB550 are respectively coupled to the antenna 510 through a radio frequency receiving path and a radio frequency transmitting path.

[0129] Exemplarily, in this embodiment, the BT DBB540 is coupled to the antenna 510 through a radio frequency receiving path (including radio frequency path 1, radio frequency path 2, radio frequency path 3, or radio frequency path 4). Among them, on radio frequency path 1, there are devices such as an external LNA 521, an internal LNA522, a mixer 523, and an RX ABB524. On radio frequency path 2, there are devices such as an external LNA521, a power attenuator 910, an internal LNA522, a mixer 523, and an RX ABB524. On radio frequency path 3, there are devices such as an internal LNA522, a mixer 523, and an RX ABB524. On radio frequency path 4, there are devices such as a power attenuator 910, an internal LNA522, a mixer 523, and an RXABB524.

[0130] Continuing to refer to Figure 9 , there are single-pole double-throw switches between each radio frequency path, including a single-pole double-throw switch 920 and a single-pole double-throw switch 930. Both the single-pole double-throw switch 920 and the single-pole double-throw switch 930 include a terminal 0, a terminal 1, and a terminal 2. By placing the switch at different terminals, the switching of different radio frequency paths is realized, that is, the external LNA521 and the power attenuator 910 are selectively bypassed. Referring to Figure 9 , the terminal 0 of the single-pole double-throw switch 920 is coupled to the BT DBB540, the terminal 1 is coupled to the output end of the power attenuator 910, and the terminal 2 is coupled to the input end of the power attenuator 910. The terminal 0 of the single-pole double-throw switch 930 is coupled to the input end of the power attenuator 910, the terminal 1 is coupled to the input end of the external LNA521, and the terminal 2 is coupled to the output end of the external LNA521.

[0131] Optionally, in this embodiment, the external LNA 521, the power attenuator 910, and the single-pole double-throw switch 930 constitute a gain unit. In one example, when the single-pole double-throw switch 920 is placed at terminal 2 and the single-pole double-throw switch 930 is placed at terminal 2, the RF path 1 can be enabled, that is, the power attenuator 910 in the gain unit is bypassed.

[0132] In another example, when the single-pole double-throw switch 930 is placed at terminal 2 and the single-pole double-throw switch 920 is placed at terminal 1, the RF path 2 can be enabled, that is, the gain attenuation is achieved through the power attenuator 910.

[0133] In yet another example, when the single-pole double-throw switch 930 is placed at terminal 1 and the single-pole double-throw switch 920 is placed at terminal 2, the RF path 3 can be enabled, that is, the gain attenuation is achieved by bypassing the external LNA 521 and the power attenuator 910 in the gain unit.

[0134] In yet another example, when the single-pole double-throw switch 930 is placed at terminal 1 and the single-pole double-throw switch 920 is placed at terminal 1, the RF path 4 can be enabled, that is, the gain attenuation is achieved by bypassing the external LNA 521 in the gain unit and enabling the power attenuator 910.

[0135] Exemplarily, in this embodiment, in the initial stage, the single-pole double-throw switch 920 and the single-pole double-throw switch 930 are defaulted to be placed at terminal 2 to enable the RF path 1, that is, the BT DBB540 receives the Bluetooth signal transmitted by the antenna 510 through the RF path 1.

[0136] Still referring to Figure 9 , the antenna 510 is connected to the Wi-Fi DBB550 through the RF receiving path, that is, the RF path 5. Devices such as an external LNA 521, an internal LNA 525, a mixer 526, and an RX ABB527 are provided on the RF path 5. The antenna 510 can transmit the Wi-Fi signal to the Wi-Fi DBB550 through the RF path 5.

[0137] Optionally, the BT DBB540 is connected to the single-pole double-throw switch 920, and the single-pole double-throw switch 930 is connected to the internal LNA 522 through a control path. Optionally, the Wi-Fi DBB550 is connected to the external LNA 521 and the internal LNA 525 through a control path.

[0138] Next, in combination with Figure 9 , the control method in the embodiments of the present application will be described in detail. As Figure 10 shown in the schematic flow diagram of the control method, in Figure 10 :

[0139] Step 301, the Wi-Fi DBB obtains the control right of the external LNA.

[0140] Step 302: The BT DBB and the Wi-Fi DBB respectively receive a Bluetooth signal and a Wi-Fi signal.

[0141] Step 303: The BT DBB determines whether the strength of the Bluetooth signal is greater than or equal to a first switching threshold.

[0142] Exemplarily, in this embodiment, the first switching threshold is taken as -70 dBm for illustration. Specifically, the BT DBB determines whether the strength of the Bluetooth signal is greater than or equal to the first switching threshold based on the received Bluetooth signal. In one example, if it is greater than or equal to the first switching threshold, step 304 is executed; if it is less than the first switching threshold, step 302 is repeatedly executed, that is, the Bluetooth signal is continuously received based on radio frequency path 1.

[0143] Step 304: The BT DBB controls the first single-pole double-throw switch to be placed at terminal 1 to enable radio frequency path 2.

[0144] Exemplarily, if the BT DBB 540 determines that the strength of the Bluetooth signal is greater than or equal to -70 dBm, a control signal is sent to the single-pole double-throw switch 920 through the control path between the BT DBB and the first single-pole double-throw switch, that is, the single-pole double-throw switch 920, to control the single-pole double-throw switch 920 to be placed at terminal 1. Among them, the single-pole double-throw switch 930 is still placed at terminal 2, so as to enable radio frequency path 2. The BT DBB 540 receives the Bluetooth signal transmitted by the antenna 510 through radio frequency path 2, and the power attenuator 910 can process the Bluetooth signal to reduce the gain of the Bluetooth signal. That is to say, the purpose of reducing the gain can be achieved through the power attenuator.

[0145] Step 305: The BT DBB determines whether the strength of the Bluetooth signal is greater than or equal to a second switching threshold.

[0146] Exemplarily, in this embodiment, the second switching threshold is taken as -60 dBm for illustration. Specifically, the BT DBB determines whether the strength of the Bluetooth signal is greater than or equal to the second switching threshold based on the received Bluetooth signal. In one example, if it is greater than or equal to the second switching threshold, step 306 is executed; if it is less than the second switching threshold, no processing is performed, that is, the Bluetooth signal is continuously received through radio frequency path 2.

[0147] Step 306: The BT DBB controls the first single-pole double-throw switch to be placed at terminal 2 and the second single-pole double-throw switch to be placed at terminal 1 to enable radio frequency path 3.

[0148] Exemplarily, if BT DBB540 determines that the strength of the Bluetooth signal is greater than or equal to -60 dBm, control signals are respectively sent to single-pole double-throw switch 920 (i.e., the first single-pole double-throw switch) and single-pole double-throw switch 930 (i.e., the second single-pole double-throw switch) through the control paths therebetween, so as to control single-pole double-throw switch 930 to be placed at terminal 1 and single-pole double-throw switch 920 to be placed at terminal 2, enabling RF path 3. BT DBB540 receives the Bluetooth signal transmitted by antenna 510 through RF path 3 to bypass the external LNA (i.e., perform bypass on the external LNA), thereby reducing the gain of the Bluetooth signal.

[0149] In a possible implementation, the BT DBB can also be configured as follows: when it is determined that the strength of the Bluetooth signal is greater than or equal to the first switching threshold, RF path 3 is enabled, that is, the external LNA is bypassed. Subsequently, when it is determined that the strength of the Bluetooth signal is greater than or equal to the second switching threshold, RF path 2 is enabled, that is, the purpose of reducing the gain is achieved through the power attenuator.

[0150] Step 307, the BT DBB determines whether the strength of the Bluetooth signal is greater than or equal to the third switching threshold.

[0151] Exemplarily, in this embodiment, the third switching threshold is taken as -50 dBm for illustration. Specifically, the BTDBB determines whether the strength of the Bluetooth signal is greater than or equal to the third switching threshold based on the received Bluetooth signal. In one example, if it is greater than or equal to the third switching threshold, step 308 is executed; if it is less than the third switching threshold, no processing is performed, that is, the Bluetooth signal is still received through RF path 3.

[0152] Step 308, the BT DBB controls the first single-pole double-throw switch to be placed at terminal 1 and enables RF path 4.

[0153] Exemplarily, if BT DBB540 determines that the strength of the Bluetooth signal is greater than or equal to -50 dBm, a control signal is sent to single-pole double-throw switch 930 through the control path between the BT DBB540 and single-pole double-throw switch 920 (i.e., the first single-pole double-throw switch) to control single-pole double-throw switch 930 to be placed at terminal 1. Herein, single-pole double-throw switch 930 remains at terminal 1, thereby enabling RF path 4. BT DBB540 receives the Bluetooth signal transmitted by antenna 510 through RF path 4 to bypass the external LNA (i.e., perform bypass on the external LNA), thereby reducing the gain of the Bluetooth signal, and further processes the Bluetooth signal through power attenuator 910 to further reduce the gain of the Bluetooth signal.

[0154] It should be noted that at this time, the control right of the external LNA is still with the Wi-Fi DBB550, and the external LNA is still in the high-gain gear, so as to ensure the signal-to-noise ratio of the Wi-Fi signal under the condition of meeting the anti-interference requirements of the BT DBB.

[0155] Step 309, the Wi-Fi DBB determines whether the intensity of the Wi-Fi signal is greater than or equal to the fourth switching threshold.

[0156] Step 310, the Wi-Fi DBB places the external LNA in the low-gain gear.

[0157] Scenario 4

[0158] As Figure 11 shown is a schematic structural diagram of a short-range communication device provided by an embodiment of the present application. Referring to Figure 11 , the BT DBB1140 and the Wi-Fi DBB1150 are respectively coupled to the antenna 1110 through a radio frequency receiving path and a radio frequency transmitting path.

[0159] Exemplarily, in this embodiment, the BT DBB1140 is coupled to the antenna 1110 through a radio frequency receiving path (including radio frequency path 1 or radio frequency path 2). Among them, on radio frequency path 1, there are devices such as an external LNA 1121, an internal LNA1125, a mixer 1123, and an RX ABB1124. On radio frequency path 2, there are devices such as an external LNA 1121, a mixer 1123, and an RX ABB1124. Among them, the external LNA can also be called a shared external LNA, and the internal LNA can also be called a shared internal LNA. Exemplarily, the input end of the external LNA1121 is coupled to the antenna 1110, and the input end of the internal LNA1125 is coupled to the output end of the external LNA1121.

[0160] Continuing to refer to Figure 11 , in this embodiment, there is a single-pole double-throw switch 1160 between radio frequency path 1 and radio frequency path 2, including terminal 0, terminal 1, and terminal 2. Terminal 0 is the fixed end, and terminal 1 and terminal 2 are the movable ends. Among them, terminal 0 is coupled to the BT DBB1140, terminal 1 is coupled to the input end of the internal LNA1125, and terminal 2 is coupled to the output end of the internal LNA1125. This single-pole double-throw switch 1160 is used to control the enabling states of radio frequency path 1 and radio frequency path 2.

[0161] Optionally, in this embodiment, the built-in 1125 constitutes a gain unit. In one example, if the single-pole double-throw switch 1110 is placed at terminal 1, that is, terminal 0 is connected to terminal 1, enabling RF path 2, which means bypassing the built-in 1125. The antenna 1110 transmits the Bluetooth signal to the BT DBB 1140 through RF path 2. In another example, if the single-pole double-throw switch 1160 is placed at terminal 2, that is, terminal 0 is connected to terminal 2, enabling RF path 1. That is, the antenna 1110 transmits the Bluetooth signal to the BT DBB 1140 through RF path 1. Exemplarily, in this embodiment, in the initial state, the single-pole double-throw switch 1160 is placed at terminal 2, enabling RF path 1.

[0162] Still referring to Figure 11 , the antenna 1110 is connected to the Wi-Fi DBB 1150 through an RF receiving path (RF path 3). Devices such as an external LNA 1121, a built-in LNA 1125, a mixer 1126, and an RX ABB 1127 are provided on the RF path 3. The antenna 1110 can transmit the Wi-Fi signal to the Wi-Fi DBB 1150 through the RF path 3.

[0163] Optionally, the BT DBB 1140 and the single-pole double-throw switch 1160 are connected through a control path. Optionally, the Wi-Fi DBB 1150 and the external LNA 1121 and the built-in LNA 1125 are connected through a control path.

[0164] Next, in conjunction with Figure 11 , the control method in the embodiments of the present application will be described in detail. As Figure 12 shown, it is a schematic flowchart of the control method. In Figure 12 :

[0165] Step 401, the Wi-Fi DBB obtains the control rights of the external LNA and the built-in LNA.

[0166] Step 402, the BT DBB and the Wi-Fi DBB respectively receive the Bluetooth signal and the Wi-Fi signal.

[0167] Step 403, the BT DBB determines whether the intensity of the Bluetooth signal is greater than or equal to the first switching threshold.

[0168] Exemplarily, in this embodiment, the first switching threshold is taken as -70 dBm for illustration. Specifically, the BT DBB 1140 determines whether the intensity of the Bluetooth signal is greater than or equal to the first switching threshold based on the received Bluetooth signal. In one example, if it is greater than or equal to the first switching threshold, step 404 is executed. If it is less than the first switching threshold, step 402 is repeatedly executed, that is, continue to receive the Bluetooth signal based on RF path 1.

[0169] Step 404, the BT DBB determines whether the gain gear of the built-in LNA is a positive gain gear.

[0170] Exemplarily, as described above, the gain gears of the LNA include positive gain gears, which can increase the gain of the signal, and can also include negative gain gears, which can reduce the gain of the signal. Among them, the positive gain gears and negative gain gears can further include multiple gears.

[0171] Exemplarily, if the BT DBB determines that the strength of the Bluetooth signal is greater than or equal to -70 dBm, and at this time the built-in LNA is in the negative gain gear, that is, the built-in LNA is currently enabling the function of reducing the gain, then there is no need to bypass the built-in LNA. It can also be understood that if the built-in LNA is bypassed (that is, the external LNA is bypassed), the gain of the signal will instead increase.

[0172] Exemplarily, if the BT DBB determines that the strength of the Bluetooth signal is greater than or equal to -70 dBm, and at this time the built-in LNA is in the positive gain gear, that is, the built-in LNA is currently enabling the function of increasing the gain, then it is necessary to bypass the built-in LNA (that is, bypass the external LNA) to reduce the gain of the Bluetooth signal, and step 405 is executed.

[0173] Step 405, the BT DBB controls the single-pole double-throw switch to be placed at terminal 1 to enable RF path 2.

[0174] Exemplarily, the BT DBB1140 sends a control signal to the single-pole double-throw switch 1160 through the control path between the BT DBB1140 and the single-pole double-throw switch 1160 to control the single-pole double-throw switch 1160 to be placed at terminal 1 to enable RF path 2. The BT DBB1140 receives the Bluetooth signal transmitted by the antenna 1110 through RF path 2 to bypass the built-in LNA, thereby reducing the gain of the Bluetooth signal.

[0175] It should be noted that at this time, the control rights of the external LNA and the built-in LNA are still with the Wi-Fi DBB1150, and the external LNA and the built-in LNA are still in the high-gain gear, so as to ensure the signal-to-noise ratio of the Wi-Fi signal under the condition of meeting the anti-interference requirements of the BT DBB.

[0176] Step 406, the Wi-Fi DBB controls the gain gears of the external LNA and the built-in LNA based on the strength of the Wi-Fi signal.

[0177] Exemplarily, the Wi-Fi DBB can control the gain gears of the external LNA and the built-in LNA based on the strength of the Wi-Fi signal. For specific details, reference can be made to the existing technical embodiments, and the present application does not make any limitations.

[0178] Scenario Five

[0179] As Figure 13 shown, the following is a schematic structural diagram of a short - range communication device provided by an embodiment of the present application. Referring to Figure 13 , BT DBB1140 and Wi - Fi DBB1150 are respectively coupled to antenna 1110 through a radio - frequency receiving path and a radio - frequency transmitting path.

[0180] Exemplarily, in this embodiment, BT DBB1140 is coupled to antenna 1110 through a radio - frequency receiving path (including radio - frequency path 1, radio - frequency path 2, and radio - frequency path 3). Among them, on radio - frequency path 1, there are devices such as an external LNA 1121, an internal LNA1125, a mixer 1123, and an RX ABB1124; on radio - frequency path 2, there are devices such as an external LNA 1121, a mixer 1123, and an RX ABB1124; on radio - frequency path 3, there are devices such as a mixer 1123 and an RX ABB1124. Among them, the external LNA can also be called a shared external LNA, and the internal LNA can also be called a shared internal LNA. Exemplarily, the input end of the external LNA 1121 is coupled to antenna 1110, and the output end of the external LNA 1121 is coupled to the internal LNA1125.

[0181] Continuing to refer to Figure 13 , in this embodiment, there is a single - pole triple - throw switch 1360 among radio - frequency path 1, radio - frequency path 2, and radio - frequency path 3, which includes terminals 0, 1, 2, and 3. Among them, terminal 0 is the fixed terminal, and terminals 1, 2, and 3 are the moving terminals. Terminal 0 is coupled to BT DBB1140, terminal 1 is coupled to the input end of the external LNA 1121, terminal 2 is coupled to the input end of the internal LNA1125, and terminal 3 is coupled to the output end of the internal LNA1125.

[0182] Optionally, in this embodiment, the external LNA 1121 and the internal LNA1125 form a gain unit. In one example, when the single - pole triple - throw switch 1360 is placed at terminal 3, radio - frequency path 1 can be enabled. In another example, when the single - pole triple - throw switch 1360 is placed at terminal 2, radio - frequency path 2 can be enabled, that is, the internal LNA1125 in the gain unit is bypassed. In yet another example, when the single - pole triple - throw switch 1360 is placed at terminal 1, radio - frequency path 3 can be enabled, that is, both the internal LNA1125 and the external LNA1121 in the gain unit are bypassed. Exemplarily, in this embodiment, in the initial stage, the single - pole triple - throw switch 1360 is defaulted to be placed at terminal 3, that is, radio - frequency path 1 is enabled.

[0183] Still referring to Figure 13, the antenna 1110 is connected to the Wi-Fi DBB 1150 through a radio frequency receiving path (radio frequency path 4). The following devices are provided on the radio frequency path 4: an external LNA 1121, an internal LNA 1125, a mixer 1126, an RX ABB 1127, etc. The antenna 1110 can transmit Wi-Fi signals to the Wi-Fi DBB 1150 through the radio frequency path 4.

[0184] Optionally, the BT DBB 1140 is connected to the single-pole triple-throw switch 1360 through a control path. Optionally, the Wi-Fi DBB 1150 is connected to the external LNA 1121 and the internal LNA 1125 through a control path.

[0185] Next, in conjunction with Figure 13 , the control method in the embodiments of the present application will be described in detail. As Figure 14 shown in the schematic flowchart of the control method. In Figure 14 :

[0186] Step 501, the Wi-Fi DBB obtains the control rights of the external LNA and the internal LNA.

[0187] Step 502, the BT DBB and the Wi-Fi DBB respectively receive Bluetooth signals and Wi-Fi signals.

[0188] Step 503, the BT DBB determines whether the intensity of the Bluetooth signal is greater than or equal to a first switching threshold.

[0189] Exemplarily, in this embodiment, the first switching threshold is taken as -70 dBm for illustration. Specifically, the BT DBB determines whether the intensity of the Bluetooth signal is greater than or equal to the first switching threshold based on the received Bluetooth signal. In one example, if it is greater than or equal to the first switching threshold, step 504 is executed; if it is less than the first switching threshold, step 502 is repeatedly executed, that is, the Bluetooth signal is continuously received based on the radio frequency path 1.

[0190] Step 504, the BT DBB controls the single-pole double-throw switch to be placed at terminal 2 to enable the radio frequency path 2.

[0191] Step 505, the BT DBB determines whether the intensity of the Bluetooth signal is greater than or equal to a second switching threshold.

[0192] Exemplarily, in this embodiment, the first switching threshold is taken as -30 dBm for illustration. Specifically, the BT DBB 1140 determines whether the intensity of the Bluetooth signal is greater than or equal to the second switching threshold based on the received Bluetooth signal. In one example, if it is greater than or equal to the second switching threshold, step 506 is executed; if it is less than the second switching threshold, no processing is performed, and the Bluetooth signal is still received through the radio frequency path 2.

[0193] Step 506: The BT DBB controls the single-pole double-throw switch to be placed at terminal 1 to enable RF path 3.

[0194] Step 507: The Wi-Fi DBB controls the gain levels of the external LNA and the internal LNA based on the strength of the Wi-Fi signal.

[0195] It should be noted that in the embodiments from Scenario 1 to Scenario 2, the examples are all described with the BT DBB and the Wi-Fi DBB determining the RF path based on the signal strength. In other embodiments, the BT DBB and the Wi-Fi DBB may report the strength of the obtained Bluetooth signal or Wi-Fi signal to the processor. The processor determines the RF path between the BT DBB and the antenna, as well as the levels of the external LNA and / or the internal LNA based on the strength of the Bluetooth signal or Wi-Fi signal, and sends RF path switching indication information to the BT DBB, and / or sends level switching indication information to the Wi-Fi DBB. Correspondingly, the BT DBB can enable the corresponding RF path based on the received RF path switching indication information, and the Wi-Fi DBB can control the switching of the gain levels of the external LNA and / or the internal LNA based on the received level switching indication information. Other details not described can refer to Scenarios 1 to 3 and will not be elaborated here.

[0196] Furthermore, it should be noted that in the description of the embodiments of the present application, the BT DBB and the Wi-Fi DBB are taken as examples for illustration. In other embodiments, the technical solutions in the embodiments of the present application can also be applied to scenarios where two or more baseband processors share gain units, and the present application does not make limitations.

[0197] Next, a device provided by the embodiments of the present application is introduced. As Figure 15 shown:

[0198] Figure 15 is a schematic structural diagram of a communication device provided by the embodiments of the present application. As Figure 15 shown, the communication device 1500 may include: a processor 1501, a transceiver 1505, and optionally a memory 1502.

[0199] The transceiver 1505 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing transceiver functions. The transceiver 1505 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, etc., for implementing receiving functions; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing transmitting functions.

[0200] A computer program, software code, or instructions 1504 can be stored in the memory 1502, and the computer program, software code, or instructions 1504 can also be referred to as firmware. The processor 1501 can control the MAC layer and the PHY layer by running the computer program, software code, or instructions 1503 therein, or by calling the computer program, software code, or instructions 1504 stored in the memory 1502, so as to implement the OM negotiation method provided in the following embodiments of the present application. Among them, the processor 1501 can be a central processing unit (CPU), and the memory 1502 can be, for example, a read-only memory (ROM), or a random access memory (RAM).

[0201] The processor 1501 and the transceiver 1505 described in the present application can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed-signal IC, an application-specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc.

[0202] The above communication device 1500 can also include an antenna 1506. The modules included in the communication device 1500 are only for illustrative purposes, and the present application does not limit this.

[0203] As mentioned above, the communication device described in the above embodiments can be a terminal, but the scope of the communication device described in the present application is not limited thereto, and the structure of the communication device can be unrestricted Figure 15 by. The communication device can be an independent device or can be a part of a larger device. For example, the implementation form of the communication device can be:

[0204] (1) An independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) A set of one or more ICs. Optionally, the IC set can also include a storage component for storing data and instructions; (3) A module that can be embedded in other devices; (4) A receiver, a smart terminal, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a cloud device, an artificial intelligence device, etc.; (5) Others, etc.

[0205] For the case where the implementation form of the communication device is a chip or a chip system, reference can be made to Figure 16 the structural schematic diagram of the chip shown. Figure 16The chip shown includes a processor 1601 and an interface 1602. Among them, the number of processors 1601 can be one or more, and the number of interfaces 1602 can be multiple. Optionally, the chip or chip system may include a memory 1603.

[0206] In a possible implementation, the BT DBB and the Wi-Fi DBB are integrated on the chip, and other components, including radio frequency paths, antennas, etc., are arranged outside the chip.

[0207] In another possible implementation, the BT DBB, the Wi-Fi DBB, and some components in each radio frequency path in the embodiments of the present application (such as built-in LNAs, mixers, etc.) are integrated on the chip, and the antenna, or the antenna and an external LNA, or the antenna, the external LNA, and each switch for bypassing the LNA or power attenuator involved in the present application are arranged outside the chip.

[0208] Among them, all relevant contents of each step involved in the above method embodiments can be cited in the function descriptions of the corresponding functional modules, and will not be elaborated here.

[0209] Based on the same technical concept, the embodiments of the present application also provide a computer-readable storage medium, which stores a computer program. The computer program includes at least one piece of code, and the at least one piece of code can be executed by a terminal device to control the terminal device to implement the above method embodiments.

[0210] Based on the same technical concept, the embodiments of the present application also provide a computer program, which, when executed by a terminal device, is used to implement the above method embodiments.

[0211] The program can be stored in whole or in part on a storage medium packaged together with the processor, or can be stored in whole or in part on a memory not packaged together with the processor.

[0212] Based on the same technical concept, the embodiments of the present application also provide a processor, which is used to implement the above method embodiments. The above processor can be a chip.

[0213] The steps of the methods or algorithms described in connection with the disclosed content of the embodiments of the present application can be implemented in a hardware manner or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory (RAM), flash memory, read only memory (ROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), registers, hard disk, removable hard disk, compact disc read only memory (CD-ROM), or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a network device. Of course, the processor and the storage medium can also exist as discrete components in a network device.

[0214] Those skilled in the art should be able to realize that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented by hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. The computer-readable medium includes computer storage media and communication media, where the communication media includes any medium that facilitates the transfer of a computer program from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0215] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A short - range communication device, characterized in that, comprising: a gain unit, coupled to the antenna; a first radio - frequency (RF) receiving channel, coupled to the gain unit; a first baseband processor, coupled to the first RF receiving channel, for receiving a first signal from the antenna through the first RF receiving channel; a second RF receiving channel, coupled to the gain unit; a second baseband processor, coupled to the second RF receiving channel, for receiving a second signal from the antenna through the second RF receiving channel, wherein a first bypass switch is provided between the second RF receiving channel and the gain unit, and the first bypass switch is used to selectively bypass at least one gain device in the gain unit; the gain unit includes: a first low - noise amplifier (LNA), an input end of the first LNA is coupled to the antenna, an output end of the first LNA is coupled to the first RF receiving channel, and the first LNA is a shared external LNA; the first bypass switch is respectively coupled to the output end and the input end of the first LNA, and is used to selectively bypass the first LNA; the second baseband processor is used to control the first bypass switch to selectively bypass the first LNA according to whether the intensity of the second signal is greater than a first threshold; when the first LNA is bypassed, the first baseband processor is used to receive the first signal from the antenna through the first RF receiving channel and the first LNA.

2. The device according to claim 1, characterized in that, a second LNA is provided between the first LNA and the antenna; the first LNA is integrated with the first RF receiving channel, the first baseband processor, the second RF receiving channel, and the second baseband processor.

3. The device according to any one of claims 1 to 2, characterized in that, the second baseband processor is used to control the closing state of the first bypass switch.

4. The device according to any one of claims 1 to 2, characterized in that, the first baseband processor is used to control the gain level of the first LNA.

5. The device according to any one of claims 1 to 2, characterized in that, the first RF receiving channel is provided with at least one of the following components: an internal LNA, a mixer, a receive analog baseband (RX ABB).

6. The device according to any one of claims 1 to 2, characterized in that, the second RF receiving channel is provided with at least one of the following components: an internal LNA, a mixer, an RX ABB.

7. A chip, characterized in that, comprising: a first radio - frequency (RF) receiving channel, coupled to a gain unit, wherein the gain unit is coupled to the antenna; a first baseband processor, for receiving a first signal from the antenna through the first radio - frequency (RF) receiving channel; a second RF receiving channel, coupled to the gain unit; A second baseband processor, configured to receive a second signal from the antenna via the second RF receiving channel, wherein a first bypass switch is disposed between the second RF receiving channel and the gain unit; The second baseband processor is further configured to control the first bypass switch to selectively bypass at least one gain device in the gain unit; The gain unit includes: A first low-noise amplifier (LNA), an input end of the first LNA is coupled to the antenna, an output end of the first LNA is coupled to the first RF receiving channel, and the first LNA is a shared external LNA; The first bypass switch is respectively coupled to an output end and an input end of the first LNA; The second baseband processor is specifically configured to control the first bypass switch to selectively bypass the first LNA according to whether the intensity of the second signal is greater than a first threshold; When the first LNA is bypassed, the first baseband processor is configured to receive a first signal from the antenna via the first RF receiving channel and the first LNA.

8. The chip according to claim 7, wherein, The first baseband processor is further configured to control a gain stage of the first LNA.

9. The chip according to claim 7, wherein, The first bypass switch is integrated in the chip.

10. The chip according to claim 7, wherein, At least one gain device in the gain unit is integrated in the chip.

11. The chip according to any one of claims 7 to 10, wherein, The first RF receiving channel is provided with at least one of the following components: Built-in first LNA, mixer, receive analog baseband (RX ABB).

12. The chip according to any one of claims 7 to 10, wherein, The second RF receiving channel is provided with at least one of the following components: Built-in first LNA, mixer, RX ABB.

13. A control method, wherein, Applied to a short-range communication device, the method includes: Receiving a first signal from an antenna via a first radio frequency (RF) receiving channel, wherein the first RF receiving channel is coupled to a gain unit, and the gain unit is coupled to the antenna; Receiving a second signal from the antenna via a second RF receiving channel, wherein the second RF receiving channel is coupled to the gain unit, and a first bypass switch is disposed between the second RF receiving channel and the gain unit; Controlling the first bypass switch to selectively bypass at least one gain device in the gain unit; The gain unit includes a first low-noise amplifier (LNA); An input end of the first LNA is coupled to the antenna, an output end of the first LNA is coupled to the first RF receiving channel, and the first LNA is a shared external LNA; The first bypass switch is respectively coupled to an output end and an input end of the first LNA, and is configured to selectively bypass the first LNA; Controlling the first bypass switch to selectively bypass at least one gain device in the gain unit includes: Controlling the first bypass switch to selectively bypass the first LNA according to whether the intensity of the second signal is greater than a first threshold; When the first LNA is bypassed, the first baseband processor is configured to receive a first signal from the antenna through the first RF receiving channel and the first LNA.

14. The method according to claim 13, wherein, the method further includes: Controlling the gain level of the first LNA according to the intensity of the first signal.

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