Communication circuit, electronic equipment, communication expansion chip, communication method and device

Abstract

The invention discloses a communication circuit, electronic equipment, a communication expansion chip and a communication method and device, and belongs to the technical field of communication. The communication circuit comprises a card seat used for installing a user identity identification card or a communication expansion chip, and the communication expansion chip is used for expanding a communication mode supported by the electronic equipment; the first end of the radio frequency switch is connected with the card seat, and the radio frequency switch is used for switching a radio frequency path; the radio frequency front-end circuit is connected with the second end of the radio frequency switch, and the radio frequency front-end circuit is used for transmitting a radio frequency signal; the control module is connected with the card seat and used for detecting the type of a chip installed in the card seat and controlling the radio frequency switch to be communicated with the first end and the second end under the condition that the communication expansion chip is detected to be installed in the card seat and the communication expansion chip is in a working state, so that the card seat is communicated with the radio frequency front-end circuit, and a radio frequency path of a first signal is formed.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a communication circuit, electronic equipment, a communication expansion chip, a communication method and a device. Background Art

[0002] Complex communication chips, such as V2X (Vehicle to Everything) chips and satellite communication chips, are large, and the limited internal space of electronic devices makes it difficult to allocate separate space for these chips and their required peripheral circuits. Therefore, integrating the functions of these chips into electronic devices often requires external plug-ins.

[0003] However, external chips are generally large in size, and integrating chip functions into electronic devices through external chips is inconvenient and costly. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a communication circuit, electronic equipment, communication expansion chip, communication method and device, which can integrate the functions of the communication expansion chip at a low cost in the limited space of the electronic equipment.

[0005] In a first aspect, an embodiment of the present application provides a communication circuit, including: a card holder for installing a user identity card or a communication expansion chip, the communication expansion chip is used to expand the communication mode supported by the electronic device; a radio frequency switch, a first end of the radio frequency switch is connected to the card holder, and the radio frequency switch is used to switch the radio frequency path; a radio frequency front-end circuit is connected to the second end of the radio frequency switch, and the radio frequency front-end circuit is used to transmit radio frequency signals; a control module is connected to the card holder, and the control module is used to detect the type of chip installed in the card holder. When it is detected that a communication expansion chip is installed in the card holder and the communication expansion chip is in a working state, the control module controls the radio frequency switch to connect the first end and the second end to connect the card holder and the radio frequency front-end circuit to form a radio frequency path for the first signal.

[0006] In a second aspect, an embodiment of the present application provides an electronic device, including: the communication circuit of the first aspect.

[0007] In a third aspect, an embodiment of the present application provides a communication expansion chip, which has the same shape as a user identity card. The communication expansion chip is used to adapt and be installed in the card socket of the communication circuit of the first aspect, and communicate through the card socket. The communication expansion chip is used to expand the communication methods supported by the electronic device.

[0008] In a fourth aspect, an embodiment of the present application provides a communication method, which is used for the communication circuit of the first aspect, and the communication method includes: detecting the type of chip installed in the card holder; when it is detected that a communication expansion chip is installed in the card holder and the communication expansion chip is in a working state, controlling the radio frequency switch to connect the first end and the second end to connect the card holder and the radio frequency front-end circuit to form a radio frequency path for the first signal; wherein the communication expansion chip is used to expand the communication mode supported by the electronic device.

[0009] In a fifth aspect, an embodiment of the present application provides a communication device, which is used for the communication circuit of the first aspect, and the communication device includes: a control module, which is used to detect the type of chip installed in the card holder; the control module is also used to control the RF switch to connect the first end and the second end when it detects that a communication expansion chip is installed in the card holder and the communication expansion chip is in a working state, so as to connect the card holder and the RF front-end circuit to form a RF path for the first signal; wherein the communication expansion chip is used to expand the communication mode supported by the electronic device.

[0010] In a sixth aspect, an embodiment of the present application provides an electronic device comprising a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the steps of the communication method of the fourth aspect are implemented.

[0011] In a seventh aspect, an embodiment of the present application provides a readable storage medium having a program or instruction stored thereon, which implements the steps of the communication method of the fourth aspect when the program or instruction is executed by a processor.

[0012] In an eighth aspect, an embodiment of the present application provides a chip comprising a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the steps of the communication method of the fourth aspect.

[0013] In a ninth aspect, an embodiment of the present application provides a computer program product, which is stored in a storage medium and is executed by at least one processor to implement the steps of the communication method of the fourth aspect.

[0014] The communication circuit provided by the embodiment of the present application includes a card holder, a radio frequency switch, a radio frequency front-end circuit and a control module. Among them, the first end of the radio frequency switch is connected to the card holder, the radio frequency front-end circuit is connected to the second end of the radio frequency switch, and the control module is connected to the card holder. Furthermore, the card holder is used to install a user identity card or a communication expansion chip, the communication expansion chip is used to expand the communication mode supported by the electronic device, the radio frequency switch is used to switch the radio frequency path, the radio frequency front-end circuit is used to transmit radio frequency signals, and the control module is used to detect the type of chip installed in the card holder. When it is detected that a communication expansion chip is installed in the card holder and the communication expansion chip is in a working state, the radio frequency switch is controlled to connect the first end and the second end to connect the card holder and the radio frequency front-end circuit to form a radio frequency path for the first signal. Through the above-mentioned communication circuit, the communication expansion chip is adapted to be installed in the card holder of the user identity card, and the radio frequency path is switched by the radio frequency switch, so that the communication expansion chip can communicate through the card holder multiplexing radio frequency front-end circuit. In this way, by designing the communication expansion chip to share the same shape and interface with the user identification card, the communication expansion chip reuses the card holder and surrounding circuits of the user identification card, thereby reducing the size of the communication expansion chip. While reducing the cost of using the communication expansion chip, the communication expansion chip can be installed inside the electronic device, realizing the low-cost integration of the communication expansion chip function in the limited space of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a communication circuit provided in an embodiment of the present application;

[0016] Figure 2 A schematic diagram of the structure of the card holder provided in an embodiment of the present application;

[0017] Figure 3 A schematic diagram of the structure of a user identity card provided in an embodiment of the present application;

[0018] Figure 4 One of the structural block diagrams of the electronic device provided in the embodiment of the present application;

[0019] Figure 5 A schematic diagram of the structure of the communication expansion chip provided in an embodiment of the present application;

[0020] Figure 6 A flow chart of a communication method provided in an embodiment of the present application;

[0021] Figure 7 A structural block diagram of a communication device provided in an embodiment of the present application;

[0022] Figure 8 The second structural block diagram of the electronic device provided in the embodiment of the present application;

[0023] Figure 9A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application.

[0024] Reference numerals:

[0025] 100 communication circuit, 102 card holder, 104 radio frequency switch, 106 radio frequency front-end circuit, 108 control module, 110 first spring clip, 112 second spring clip, 114 third spring clip, 116 fourth spring clip, 118 fifth spring clip, 120 sixth spring clip, 122 radio frequency antenna, 124 combiner, 126 front-end module, 128 wireless network chip, 300 communication expansion chip, 302 first pin, 304 second pin, 306 third pin, 308 fourth pin, 310 fifth pin, 312 sixth pin. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] The features of the terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, or electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0029] The following combination Figures 1-9 The communication circuit, electronic device, communication expansion chip, communication method and device according to the embodiments of the present application are described in detail.

[0030] like Figure 1 As shown, an embodiment of the present application provides a communication circuit 100 , which includes a card holder 102 , a radio frequency switch 104 , a radio frequency front-end circuit 106 and a control module 108 .

[0031] The card holder 102 is used to install a user identification card or a communication expansion chip.

[0032] The subscriber identity card is a SIM (Subscriber Identity Module) card.

[0033] In actual application, Figure 3 As shown, the SIM card may specifically include six groups of pins, among which pins 1, 2, and 3 are VCC pins, i.e., power pins, for powering the SIM card; pins 4, 5, and 6 are RST pins, i.e., reset pins, for providing a reset function; pins 7, 8, and 9 are CLK pins, i.e., clock pins, for providing a clock signal; pins 10, 11, and 12 are GND pins, i.e., ground pins, for grounding; pins 13, 14, and 15 are VPP pins, which are backup points and may not be used; and pins 16, 17, and 18 are I / O (Input / Output) pins, i.e., data pins, for data transmission.

[0034] Furthermore, the communication expansion chip is used to expand the communication modes supported by the electronic device. The communication expansion chip is used to implement signal modulation and demodulation, protocols, signal scheduling and other processing functions for radio frequency signals, and can also interact with the control module 108 for control.

[0035] In actual application, the communication expansion chip is an external chip used for communication, such as a V2X chip, a satellite communication chip, and an NFC (Near Field Communication) chip, etc., which is not specifically limited here.

[0036] V2X chips are used to enable wireless communication between vehicles and the outside world. Their capabilities include GPS (Global Positioning System) navigation, vehicle-to-vehicle communication, wireless communications, and remote sensing. V2X communication can improve the performance of advanced driver assistance systems by providing real-time information about other vehicles, pedestrians, and road conditions, enabling drivers to make more informed decisions. V2X communication connects people, vehicles, and urban facilities and networks, facilitating better management of traffic, public transportation, and urban planning, and plays a vital role in building smart cities. However, V2X chips are typically large and can often only be deployed in cars, electric vehicles, and traffic lights.

[0037] Furthermore, the satellite communication chip is used to implement the satellite communication function of the electronic device.

[0038] Furthermore, the NFC chip is used to implement the near field communication function of the electronic device.

[0039] Furthermore, a first end of the RF switch 104 is connected to the card holder 102 .

[0040] Furthermore, the RF switch 104 is used to switch the RF path.

[0041] In actual application, the RF switch 104 may be a single-pole double-throw switch. The RF switch 104 has no frequency selectivity and generally supports an operating frequency range of 0.6 GHz to 6 GHz.

[0042] Furthermore, the RF front-end circuit 106 is connected to the second end of the RF switch 104 . The RF front-end circuit 106 is used to transmit RF signals, such as receiving RF signals, transmitting RF signals, and processing RF signals.

[0043] Furthermore, the control module 108 is connected to the card holder 102 .

[0044] Furthermore, the control module 108 can supply power to the user identity card or the communication expansion chip through the card holder 102 , and is also used to exchange signals such as clock signals, data signals, and control signals with the user identity card or the communication expansion chip.

[0045] Specifically, the control module 108 is used to detect the type of chip installed in the card holder 102, and when it is detected that a communication expansion chip is installed in the card holder 102 and the communication expansion chip is in a working state, it provides a first working signal to the communication expansion chip. The first working signal may specifically include a first power signal, a first clock signal and a first data signal, and controls the RF switch 104 to connect its first end and the second end to connect the card holder 102 and the RF front-end circuit 106, thereby forming a first RF path between the communication expansion chip and the RF front-end circuit 106. The first RF path is the RF path of the first signal of the communication expansion chip, and the first signal is the RF signal of the communication expansion chip, such as the wireless communication signal of the V2X chip used in the vehicle network scenario, the satellite communication signal of the satellite communication chip, the near-field communication signal of the NFC chip, etc.

[0046] It is understandable that the control module 108 can be a processor, GPU, CPU, wireless signal radio frequency chip, etc., and this application does not make any specific limitations on this.

[0047] It is understandable that for communication expansion chips such as V2X chips, satellite communication chips and NFC chips, due to their complex functions, the chips are often large in size and difficult to install inside electronic devices. They usually need to be connected to electronic devices through USB (Universal Serial Bus) ports for use.

[0048] In the communication circuit 100 of the embodiment of the present application, the SIM card holder 102 in the electronic device is used to integrate the functions of the external communication expansion chip. Specifically, the communication expansion chip is designed to share the same appearance and interface with the SIM card. By installing the communication expansion chip in the SIM card holder 102, the function of integrating the external communication expansion chip in the electronic device is realized, and complete digital signal and radio frequency signal interaction can be carried out between the SIM card holder 102 and the electronic device. In this way, there is no need to set up additional installation space in the electronic device, the appearance of the electronic device does not change, and the user does not need to frequently plug and unplug the interface to use the communication expansion chip, which is convenient to use. Furthermore, the communication expansion chip can reuse the interface and peripheral circuits of the SIM card holder 102, which can reduce the devices integrated in the communication expansion chip, thereby reducing the volume of the communication expansion chip and reducing the cost of using the communication expansion chip. Furthermore, electronic devices typically have three or two SIM cards, and occupy one card slot 102 for the communication expansion chip, which does not affect the normal call and communication use of the electronic device. At the same time, the USB port of the electronic device can be freed up, allowing the communication expansion chip to be used for communication while charging, thereby solving the problem of rapid power consumption of the electronic device due to the high power consumption of the communication expansion chip.

[0049] According to the communication circuit 100 of the embodiment of the present application, it includes a card holder 102, a radio frequency switch 104, a radio frequency front-end circuit 106, and a control module 108. Among them, the first end of the radio frequency switch 104 is connected to the card holder 102, the radio frequency front-end circuit 106 is connected to the second end of the radio frequency switch 104, and the control module 108 is connected to the card holder 102. Furthermore, the card holder 102 is used to install a user identity card or a communication expansion chip, the communication expansion chip is used to expand the communication mode supported by the electronic device, the radio frequency switch 104 is used to switch the radio frequency path, the radio frequency front-end circuit 106 is used to transmit radio frequency signals, and the control module 108 is used to detect the type of chip installed in the card holder 102. When it is detected that a communication expansion chip is installed in the card holder 102 and the communication expansion chip is in a working state, the radio frequency switch 104 is controlled to connect the first end and the second end to connect the card holder 102 and the radio frequency front-end circuit 106 to form a radio frequency path for the first signal. Through the aforementioned communication circuit 100, the communication expansion chip is adapted to be installed in the card holder 102 of the user identification card, and the RF path is switched by the RF switch 104, allowing the communication expansion chip to communicate through the card holder 102 by reusing the RF front-end circuit 106. Thus, by designing the communication expansion chip to share the same form and interface with the user identification card, the communication expansion chip reuses the card holder 102 and surrounding circuits of the user identification card. This reduces the number of components integrated in the communication expansion chip, thereby reducing its size. This reduces the cost of the communication expansion chip and enables it to be installed inside an electronic device, thus achieving the low-cost integration of the communication expansion chip within the limited space of the electronic device.

[0050] According to some embodiments of the present application, optionally, as Figure 2 As shown, the card holder 102 includes a first elastic piece 110 , a second elastic piece 112 , a third elastic piece 114 , a fourth elastic piece 116 , a fifth elastic piece 118 and a sixth elastic piece 120 .

[0051] The first spring clip 110 , the second spring clip 112 , the third spring clip 114 , the fourth spring clip 116 , the fifth spring clip 118 and the sixth spring clip 120 are all used to connect to a user identification card or a communication expansion chip.

[0052] Furthermore, the first spring clip 110 , the second spring clip 112 , the third spring clip 114 and the fourth spring clip 116 are all connected to the control module 108 , the fifth spring clip 118 is also connected to the first end of the RF switch 104 , and the sixth spring clip 120 is also connected to the ground.

[0053] Furthermore, the first spring piece 110 is specifically used to connect to the power pin of the user identity card or the communication expansion chip. The first spring piece 110 is used to provide a power signal for the chip installed in the card holder 102, namely the user identity card or the communication expansion chip.

[0054] Furthermore, the second spring piece 112 is specifically used to connect to the clock pin of the user identity card or the communication expansion chip. The second spring piece 112 is used to provide a clock signal for the chip installed in the card holder 102, namely the user identity card or the communication expansion chip.

[0055] Furthermore, the third spring element 114 is specifically configured to connect to a data pin of a user identification card or a communication expansion chip. The third spring element 114 is configured to provide data signals to the chip installed in the card holder 102, i.e., the user identification card or the communication expansion chip. These data signals include: identity data, used by telecommunications operators to identify the SIM card for authentication; user service data, used to record text messages, address book data, and value-added service data; and device management instructions, including file system operation instructions and password verification instructions.

[0056] Furthermore, the fourth spring clip 116 is specifically used to connect to the reset pin of the user identity card or the detection pin of the communication expansion chip. When a user identity card is installed in the card holder 102, the fourth spring clip 116 is used to provide a reset signal for the user identity card. When a communication expansion chip is installed in the card holder 102, the fourth spring clip 116 is used to provide a detection signal for the communication expansion chip.

[0057] Furthermore, the fifth spring clip 118 is specifically configured to connect to the VPP pin of the user identification card or the RF pin of the communication expansion chip. When the user identification card is installed in the card holder 102, the fifth spring clip 118 serves as a backup interface. When the communication expansion chip is installed in the card holder 102, the fifth spring clip 118 serves as an RF interface. Backup interfaces include floating backup interfaces and grounded backup interfaces. These backup interfaces can share the pressure of plugging and unplugging, prevent misaligned contact, and protect against electrostatic and electromagnetic interference.

[0058] Furthermore, the sixth spring 120 is specifically configured to be connected to a ground pin of a user identification card or a communication expansion chip.

[0059] Based on this, the SIM card and the communication expansion chip can share the physical interface of the card holder 102. Through the six interface signals of the SIM card holder 102 and the electronic equipment, the communication expansion chip can perform complete interaction between digital signals and radio frequency signals.

[0060] In this way, on the one hand, the communication expansion chip reuses the SIM card holder 102 and its interface, eliminating the need for special structures and interfaces, resulting in higher compatibility and eliminating the need to add additional space inside the electronic device to integrate the functions of the communication expansion chip. On the other hand, the communication expansion chip reuses the SIM card's digital lines, such as power supply, clock, and data lines, which can reduce the number of components integrated in the communication expansion chip, thereby reducing the size of the communication expansion chip and lowering the cost of using the communication expansion chip.

[0061] According to the communication circuit 100 of the embodiment of the present application, the card holder 102 includes a first spring clip 110, a second spring clip 112, a third spring clip 114, a fourth spring clip 116, a fifth spring clip 118, and a sixth spring clip 120. The first spring clip 110, the second spring clip 112, the third spring clip 114, the fourth spring clip 116, the fifth spring clip 118, and the sixth spring clip 120 are all used to connect to a user identification card or a communication expansion chip. Furthermore, the first spring clip 110, the second spring clip 112, the third spring clip 114, and the fourth spring clip 116 are all connected to the control module 108, and the fifth spring clip 118 is also connected to the first end of the radio frequency switch 104. Furthermore, the first spring clip 110 is used to provide a power signal to the chip installed in the card holder 102, the second spring clip 112 is used to provide a clock signal to the chip installed in the card holder 102, and the third spring clip 114 is used to provide a data signal to the chip installed in the card holder 102. When a user identity card is installed in the card holder 102, the fourth spring clip 116 is used to provide a reset signal to the user identity card. When a communication expansion chip is installed in the card holder 102, the fourth spring clip 116 is used to provide a detection signal to the communication expansion chip. When a user identity card is installed in the card holder 102, the fifth spring clip 118 serves as a backup interface. When a communication expansion chip is installed in the card holder 102, the fifth spring clip 118 serves as a radio frequency interface. In this way, the communication expansion chip reuses the card holder 102, interface, and digital line of the SIM card, eliminating the need for special structures and interfaces, resulting in higher compatibility. It also eliminates the need to add additional space to integrate the functions of the communication expansion chip. It can also reduce the number of components integrated in the communication expansion chip, thereby reducing the size of the communication expansion chip and lowering the cost of using the communication expansion chip.

[0062] According to some embodiments of the present application, optionally, as Figure 1 As shown, the RF front-end circuit 106 may specifically include a RF antenna 122 , a combiner 124 and a front-end module 126 .

[0063] The RF antenna 122 is used to transmit and receive RF signals.

[0064] In actual applications, the RF antenna 122 can be a Wi-Fi 5G antenna. The operating frequency range of the V2X chip is 5.850 GHz to 5.925 GHz, and the maximum operating frequency of the Wi-Fi 5G antenna is 5.835 GHz. Therefore, the Wi-Fi 5G antenna can be reused as the signal transceiver antenna for the V2X chip. Wi-Fi 5G refers to a Wi-Fi (Wireless Fidelity) network in the 5 GHz frequency band.

[0065] Furthermore, the combiner 124 is connected to the RF antenna 122 , and the combiner 124 is used to combine multiple RF signals into the RF antenna 122 .

[0066] In actual applications, combiner 124 is a wireless network combiner for electronic devices. Specifically, combiner 124 can be used to combine the radio frequency signals of Wi-Fi 2.4G, Wi-Fi 5G, and GPS. The operating frequency of Wi-Fi 5G generally covers 4.9 GHz to 5.950 GHz, so the V2X chip can reuse the combiner of the wireless network radio frequency path. Wi-Fi 2.4G refers to a Wi-Fi network in the 2.4 GHz frequency band.

[0067] Furthermore, the front-end module 126 is connected to the second end of the RF switch 104 and the combiner 124. The front-end module 126 is used to amplify the received or transmitted RF signal to enhance the RF performance, thereby compensating for the RF performance loss of the communication expansion chip when the SIM card holder 102 is reused.

[0068] In actual application, the front-end module 126 can specifically be a WIFI 5G FEM (Front-End Module). Generally, a WIFI 5G FEM can support an operating frequency range of 5.150 GHz to 5.950 GHz. Therefore, the WIFI 5G and V2X chips can reuse the front-end module 126.

[0069] In this way, the communication expansion chip also reuses the radio frequency path and antenna of the electronic device, such as the radio frequency path and antenna of the WIFI 5G signal, which can further reduce the devices integrated in the communication expansion chip, thereby reducing the volume of the communication expansion chip and reducing the cost of using the communication expansion chip.

[0070] According to the communication circuit 100 of the embodiment of the present application, the RF front-end circuit 106 includes an RF antenna 122, a combiner 124, and a front-end module 126. Among them, the RF antenna 122 is used to transmit and receive RF signals; the combiner 124 is connected to the RF antenna 122, and the combiner 124 is used to combine multiple RF signals into the RF antenna 122; the front-end module 126 is connected to the second end of the RF switch 104 and the combiner 124, and the front-end module 126 is used to amplify and process the RF signal. In this way, the communication extension chip also reuses the RF path and antenna of the electronic device, which can further reduce the devices integrated in the communication extension chip, thereby reducing the volume of the communication extension chip and reducing the cost of using the communication extension chip.

[0071] According to some embodiments of the present application, optionally, as Figure 1 As shown, the communication circuit 100 further includes a wireless network chip 128 .

[0072] The wireless network chip 128 is connected to the third terminal of the RF switch 104 .

[0073] Furthermore, the wireless network chip 128 is used for wireless communication, such as WIFI communication.

[0074] On this basis, in the communication circuit 100 provided in the embodiment of the present application, when the control module 108 detects that a communication expansion chip is installed in the card holder 102 and the communication expansion chip is not working, it will also control the RF switch 104 to connect its second end and third end to connect the RF front-end circuit 106 and the wireless network chip 128, forming a second RF path between the wireless network chip 128 and the RF front-end circuit 106. The second RF path is the RF path of the second signal of the wireless network chip 128, and the second signal is the RF signal of the wireless network chip 128, such as a WIFI communication signal. At this time, the WIFI 5G module in the electronic device is working, and the control module 108 does not provide the first working signal to the communication expansion chip. In this way, the wireless communication function of the electronic device is realized, and redundant backup of the communication expansion chip and the wireless network chip 128 is realized. When the communication expansion chip fails or stops, it can quickly switch to ensure the continuity of device communication, thereby improving the reliability and robustness of the communication system.

[0075] According to the communication circuit 100 of the embodiment of the present application, the communication circuit 100 also includes a wireless network chip 128. The wireless network chip 128 is connected to the third end of the radio frequency switch 104, and the wireless network chip 128 is used for wireless communication; the control module 108 is also used to: when it is detected that a communication expansion chip is installed in the card holder 102 and the communication expansion chip is not working, control the radio frequency switch 104 to connect the second end and the third end, so as to connect the radio frequency front-end circuit 106 and the wireless network chip 128, and form a radio frequency path for the second signal. In this way, the wireless communication function of the electronic device is realized, and redundant backup of the communication expansion chip and the wireless network chip 128 is realized. When the communication expansion chip fails or stops, it can quickly switch to ensure the continuity of device communication, thereby improving the reliability and robustness of the communication system.

[0076] According to some embodiments of the present application, optionally, the control module 108 is further configured to: provide a second working signal to the user identity card when it is detected that a user identity card is installed in the card holder 102 .

[0077] Specifically, in the communication circuit 100 provided in the embodiment of the present application, when the control module 108 detects that a user identity card is installed in the card holder 102, it will also provide a second working signal to the user identity card. The second working signal includes a second power supply signal, a second clock signal and a second data signal to ensure that the user identity card operates normally.

[0078] It can be understood that in some embodiments, when the user identification card is working, the RF switch 104 connects the second end and the third end, so that the RF front-end circuit 106 is connected to the wireless network chip 128, thereby realizing the simultaneous operation of the user identification card and the wireless network chip 128, and can simultaneously realize the functions of the SIM card and the functions of a wireless network such as WIFI.

[0079] According to the communication circuit 100 of the embodiment of the present application, the control module 108 is further configured to provide a second working signal to the user identity card when it is detected that a user identity card is installed in the card holder 102. In this way, the normal operation of the user identity card is ensured.

[0080] According to some embodiments of the present application, optionally, as Figure 4 As shown, an embodiment of the present application further provides an electronic device 200. The electronic device 200 includes the communication circuit 100 in any of the above embodiments. The electronic device 200 provided in an embodiment of the present application includes the communication circuit 100 in any of the above embodiments and can achieve the same technical effects. To avoid repetition, the details will not be repeated here.

[0081] It should be noted that the electronic device 200 in the embodiment of the present application includes mobile electronic devices and non-mobile electronic devices.

[0082] In actual application, the electronic device 200 may be a terminal or other device other than a terminal. For example, the electronic device 200 may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a mobile internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. It may also be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an ATM, or an kiosks, etc., and the embodiments of the present application do not specifically limit this.

[0083] According to some embodiments of the present application, optionally, as Figure 5 As shown, the embodiment of the present application further provides a communication expansion chip 300 .

[0084] The communication expansion chip 300 has the same shape as the user identification card. It is designed to be installed in the card holder 102 of the communication circuit 100 in any of the above-mentioned embodiments and communicate through the card holder 102. The communication expansion chip 300 is used to expand the communication methods supported by the electronic device. By designing the communication expansion chip 300 to share the same form and interface with the user identification card, the communication expansion chip 300 reuses the card holder 102 and surrounding circuitry of the user identification card. This reduces the number of components integrated in the communication expansion chip 300, thereby reducing its size. This reduces the cost of the communication expansion chip 300 and allows it to be installed inside an electronic device, thus enabling the low-cost integration of the communication expansion chip 300 within the limited space of the electronic device.

[0085] According to some embodiments of the present application, optionally, as Figure 5 As shown, the communication expansion chip 300 includes a first pin 302 , a second pin 304 , a third pin 306 , a fourth pin 308 , a fifth pin 310 and a sixth pin 312 .

[0086] Among them, when the communication expansion chip 300 is installed in the card holder 102, the first pin 302 is connected to the first spring piece 110 of the card holder 102, and the first pin 302 is used to receive the power signal; the second pin 304 is connected to the second spring piece 112 of the card holder 102, and the second pin 304 is used to receive the clock signal; the third pin 306 is connected to the third spring piece 114 of the card holder 102, and the third pin 306 is used to receive the data signal; the fourth pin 308 is connected to the fourth spring piece 116 of the card holder 102, and the fourth pin 308 is used to receive the detection signal; the fifth pin 310 is connected to the fifth spring piece 118 of the card holder 102, and the fifth pin 310 is used to send and receive radio frequency signals; the sixth pin 312 is connected to the ground terminal by being connected to the sixth spring piece 120 of the card holder 102. In this way, the communication expansion chip 300 can reuse the card holder 102, interface, and digital line of the SIM card, without the need for special structures and interfaces, thus achieving higher compatibility and eliminating the need for adding additional space to integrate the functions of the communication expansion chip 300. Furthermore, the number of components integrated in the communication expansion chip 300 can be reduced, thereby reducing the size of the communication expansion chip 300 and lowering the cost of using the communication expansion chip 300.

[0087] like Figure 6 As shown, an embodiment of the present application provides a communication method, which may include the following S402 and S404:

[0088] S402: Detect the chip type installed in the card holder.

[0089] The communication method proposed in the embodiments of the present application is used in the communication circuit in any of the above embodiments.

[0090] Specifically, in the communication method provided in the embodiment of the present application, the type of chip installed in the card holder is detected to determine whether the chip installed in the card holder is a user identity card or a communication expansion chip.

[0091] S404: When it is detected that a communication expansion chip is installed in the card holder and the communication expansion chip is in an operating state, control the radio frequency switch to connect the first end and the second end to connect the card holder and the radio frequency front-end circuit to form a radio frequency path for the first signal.

[0092] The communication expansion chip is used to expand the communication modes supported by the electronic device.

[0093] Furthermore, the first signal is a radio frequency signal of a communication expansion chip, such as a wireless communication signal of a V2X chip used in a vehicle networking scenario, a satellite communication signal of a satellite communication chip, a near-field communication signal of an NFC chip, etc.

[0094] Specifically, in the communication method provided in the embodiment of the present application, when it is detected that a communication expansion chip is installed in the card holder and the communication expansion chip is in an operating state, a first operating signal is provided to the communication expansion chip. The first operating signal may specifically include a first power signal, a first clock signal, and a first data signal. The radio frequency switch is controlled to connect its first end and the second end to connect the card holder and the radio frequency front-end circuit, thereby forming a first radio frequency path between the communication expansion chip and the radio frequency front-end circuit. The first radio frequency path is the radio frequency path for the first signal of the communication expansion chip.

[0095] The communication method provided in the embodiment of the present application detects the type of chip installed in the card holder; when it is detected that a communication expansion chip is installed in the card holder and the communication expansion chip is in an operating state, the radio frequency switch is controlled to connect the first end and the second end to connect the card holder and the radio frequency front-end circuit to form a radio frequency path for the first signal; wherein the communication expansion chip is used to expand the communication mode supported by the electronic device. In this way, the communication expansion chip reuses the card holder and surrounding circuits of the user identity card, which can reduce the number of devices integrated in the communication expansion chip, thereby reducing the size of the communication expansion chip. While reducing the cost of using the communication expansion chip, the communication expansion chip can be installed inside the electronic device, realizing the function of low-cost integration of the communication expansion chip in the limited space of the electronic device.

[0096] In the embodiment of the present application, after the above S402, the above communication method further includes the following S406:

[0097] S406: When it is detected that a communication expansion chip is installed in the card holder and the communication expansion chip is not working, control the radio frequency switch to connect the second end and the third end to connect the radio frequency front-end circuit and the wireless network chip to form a radio frequency path for the second signal.

[0098] The second signal is a radio frequency signal of a wireless network chip, such as a WIFI communication signal.

[0099] Specifically, in the communication method provided in the embodiment of the present application, when it is detected that a communication expansion chip is installed in the card holder and the communication expansion chip is not working, the RF switch is controlled to connect its second and third terminals to connect the RF front-end circuit and the wireless network chip, forming a second RF path between the wireless network chip and the RF front-end circuit. This second RF path is the RF path for the second signal of the wireless network chip. At this time, the WIFI 5G module in the electronic device is working.

[0100] In the embodiments provided herein, upon detecting that a communication expansion chip is installed in the card holder and that the communication expansion chip is not operating, the RF switch is controlled to connect the second and third terminals, thereby connecting the RF front-end circuit and the wireless network chip, forming an RF path for the second signal. This enables wireless communication functionality for the electronic device and provides redundant backup for the communication expansion chip and the wireless network chip. This allows for rapid switching to ensure device communication continuity in the event of a communication expansion chip failure or malfunction, thereby improving the reliability and robustness of the communication system.

[0101] In the embodiment of the present application, after the above S402, the above communication method further includes the following S408:

[0102] S408: When it is detected that a user identification card is installed in the card holder, a second working signal is provided to the user identification card.

[0103] Specifically, in the communication method provided in the embodiment of the present application, when it is detected that a user identity identification card is installed in the card holder, a second working signal will also be provided to the user identity identification card. The second working signal includes a second power supply signal, a second clock signal and a second data signal to ensure the normal operation of the user identity identification card.

[0104] The above embodiment provided by the present application provides a second working signal to the user identity card when it is detected that a user identity card is installed in the card holder, thereby ensuring the normal operation of the user identity card.

[0105] The communication method provided in the embodiment of the present application can be executed by a communication device. In the embodiment of the present application, the communication device provided in the embodiment of the present application is described by taking the communication device executing the above communication method as an example.

[0106] like Figure 7 As shown, an embodiment of the present application provides a communication device 500, which is used in the communication circuit in any of the above embodiments. The communication device 500 may specifically include the above control module 108.

[0107] The control module 108 is used to detect the type of chip installed in the card holder;

[0108] The control module 108 is further configured to control the radio frequency switch to connect the first end and the second end, so as to connect the card holder and the radio frequency front-end circuit, thereby forming a radio frequency path for the first signal, when detecting that a communication expansion chip is installed in the card holder and the communication expansion chip is in an operating state;

[0109] The communication expansion chip is used to expand the communication modes supported by the electronic device.

[0110] The communication device provided in the embodiment of the present application detects the type of chip installed in the card holder; when it is detected that a communication expansion chip is installed in the card holder and the communication expansion chip is in an operating state, the radio frequency switch is controlled to connect the first end and the second end to connect the card holder and the radio frequency front-end circuit to form a radio frequency path for the first signal; wherein the communication expansion chip is used to expand the communication mode supported by the electronic device. In this way, the communication expansion chip reuses the card holder and surrounding circuits of the user identity card, which can reduce the number of devices integrated in the communication expansion chip, thereby reducing the size of the communication expansion chip. While reducing the cost of using the communication expansion chip, the communication expansion chip can be installed inside the electronic device, realizing the function of low-cost integration of the communication expansion chip in the limited space of the electronic device.

[0111] In an embodiment of the present application, the control module 108 is further configured to: upon detecting that a communication expansion chip is installed in the card holder and that the communication expansion chip is not working, control the RF switch to connect the second end and the third end, so as to connect the RF front-end circuit and the wireless network chip, thereby forming a RF path for the second signal.

[0112] In the embodiments provided herein, upon detecting that a communication expansion chip is installed in the card holder and that the communication expansion chip is not operating, the RF switch is controlled to connect the second and third terminals, thereby connecting the RF front-end circuit and the wireless network chip, forming an RF path for the second signal. This enables wireless communication functionality for the electronic device and provides redundant backup for the communication expansion chip and the wireless network chip. This allows for rapid switching to ensure device communication continuity in the event of a communication expansion chip failure or malfunction, thereby improving the reliability and robustness of the communication system.

[0113] In the embodiment of the present application, the control module 108 is further configured to provide a second working signal to the user identity card when it is detected that a user identity card is installed in the card holder.

[0114] The above embodiment provided by the present application provides a second working signal to the user identity card when it is detected that a user identity card is installed in the card holder, thereby ensuring the normal operation of the user identity card.

[0115] The communication device 500 in the embodiment of the present application may be an electronic device, or a component in an electronic device, such as an integrated circuit or a chip.

[0116] The communication device 500 in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0117] The communication device 500 provided in the embodiment of the present application can realize Figure 6 To avoid repetition, the various processes implemented in the method embodiment are not described here.

[0118] Alternatively, as Figure 8 As shown, an embodiment of the present application also provides an electronic device 600, including a processor 602 and a memory 604, wherein the memory 604 stores programs or instructions that can be run on the processor 602. When the program or instructions are executed by the processor 602, the various steps of the above-mentioned communication method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, they will not be described here.

[0119] It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

[0120] Figure 9 A schematic diagram of the hardware structure of an electronic device implementing an embodiment of the present application.

[0121] The electronic device 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709 and a processor 710.

[0122] Those skilled in the art will understand that the electronic device 700 may also include a power source (such as a battery) to power each component, and the power source may be logically connected to the processor 710 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. Figure 9 The electronic device structure shown in the figure does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be repeated here.

[0123] The processor 710 is used to detect the type of chip installed in the card holder.

[0124] The processor 710 is further configured to, upon detecting that a communication expansion chip is installed in the card holder and that the communication expansion chip is in an operating state, control the RF switch to connect the first end and the second end, so as to connect the card holder and the RF front-end circuit to form a RF path for the first signal.

[0125] The communication expansion chip is used to expand the communication modes supported by the electronic device.

[0126] In an embodiment of the present application, the type of chip installed in the card holder is detected; when it is detected that a communication expansion chip is installed in the card holder and the communication expansion chip is in an operating state, the radio frequency switch is controlled to connect the first end and the second end to connect the card holder with the radio frequency front-end circuit, forming a radio frequency path for the first signal; wherein the communication expansion chip is used to expand the communication methods supported by the electronic device. In this way, the communication expansion chip reuses the card holder and surrounding circuits of the user identity card, can reduce the number of devices integrated in the communication expansion chip, and thus reduce the size of the communication expansion chip. While reducing the cost of using the communication expansion chip, the communication expansion chip can be installed inside the electronic device, realizing the function of low-cost integration of the communication expansion chip in the limited space of the electronic device.

[0127] Optionally, the processor 710 is further used to: when it is detected that a communication expansion chip is installed in the card holder and the communication expansion chip is not working, control the RF switch to connect the second end and the third end to connect the RF front-end circuit and the wireless network chip to form a RF path for the second signal.

[0128] In the embodiments provided herein, upon detecting that a communication expansion chip is installed in the card holder and that the communication expansion chip is not operating, the RF switch is controlled to connect the second and third terminals, thereby connecting the RF front-end circuit and the wireless network chip, forming an RF path for the second signal. This provides redundant backup for the communication expansion chip and the wireless network chip, enabling rapid switching to ensure device communication continuity in the event of a communication expansion chip failure or interruption, thereby improving the reliability and robustness of the communication system.

[0129] Optionally, the processor 710 is further configured to: provide a second working signal to the user identity card when it is detected that a user identity card is installed in the card holder.

[0130] The above embodiment provided by the present application provides a second working signal to the user identity card when it is detected that a user identity card is installed in the card holder, thereby ensuring the normal operation of the user identity card.

[0131] It should be understood that in an embodiment of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042, and the graphics processor 7041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0132] The memory 709 can be used to store software programs and various data. The memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 709 may include a volatile memory or a non-volatile memory, or the memory 709 may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 709 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0133] Processor 710 may include one or more processing units. Optionally, processor 710 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 710.

[0134] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned communication method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0135] The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0136] An embodiment of the present application further provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned communication method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0137] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0138] An embodiment of the present application provides a computer program product, which is stored in a storage medium. The program product is executed by at least one processor to implement the various processes of the above-mentioned communication method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0139] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0140] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A communication circuit, characterized in that: include: A card holder for installing a user identification card or a communication expansion chip, wherein the communication expansion chip is used to expand the communication methods supported by the electronic device; A radio frequency switch, a first end of which is connected to the card holder, and the radio frequency switch is used to switch the radio frequency path; a radio frequency front-end circuit, connected to the second end of the radio frequency switch, the radio frequency front-end circuit being configured to transmit radio frequency signals; a control module connected to the card holder, the control module being configured to detect a chip type installed in the card holder, and, upon detecting that the communication expansion chip is installed in the card holder and that the communication expansion chip is in an operating state, controlling the radio frequency switch to connect the first end and the second end, so as to connect the card holder and the radio frequency front-end circuit, thereby forming a radio frequency path for the first signal.

2. The communication circuit according to claim 1, wherein: The card holder includes: a first spring element connected to the control module and further configured to connect to the user identification card or the communication expansion chip, the first spring element being configured to provide a power signal to the chip installed in the card holder; a second spring piece connected to the control module and further configured to connect to the user identification card or the communication expansion chip, the second spring piece being configured to provide a clock signal for the chip installed in the card holder; a third spring piece connected to the control module and further configured to connect to the user identification card or the communication expansion chip, the third spring piece being configured to provide a data signal to the chip installed in the card holder; a fourth spring piece connected to the control module and further configured to connect to the user identity card or the communication expansion chip. When the user identity card is installed in the card holder, the fourth spring piece is configured to provide a reset signal for the user identity card. When the communication expansion chip is installed in the card holder, the fourth spring piece is configured to provide a detection signal for the communication expansion chip. a fifth spring piece connected to the first end of the radio frequency switch and further configured to connect to the user identity card or the communication expansion chip. When the user identity card is installed in the card holder, the fifth spring piece serves as a backup interface. When the communication expansion chip is installed in the card holder, the fifth spring piece serves as a radio frequency interface. The sixth spring piece is used to be connected to the ground terminal of the user identification card or the communication expansion chip.

3. The communication circuit according to claim 1, wherein: The radio frequency front-end circuit includes: A radio frequency antenna, used for transmitting and receiving radio frequency signals; a combiner connected to the radio frequency antenna, the combiner being configured to combine multiple radio frequency signals into the radio frequency antenna; A front-end module is connected to the second end of the radio frequency switch and the combiner, and is used to amplify the radio frequency signal.

4. The communication circuit according to any one of claims 1 to 3, characterized in that: Also includes: a wireless network chip connected to the third end of the radio frequency switch, the wireless network chip being used for wireless communication; The control module is further configured to, when detecting that the communication expansion chip is installed in the card holder and the communication expansion chip is not working, control the radio frequency switch to connect the second end and the third end, so as to connect the radio frequency front-end circuit and the wireless network chip to form a radio frequency path for the second signal.

5. An electronic device, characterized in that: include: The communication circuit according to any one of claims 1 to 4.

6. A communication expansion chip, characterized in that: The communication expansion chip has the same shape as the user identification card. The communication expansion chip is adapted to be installed in the card holder of the communication circuit according to any one of claims 1 to 4 and to communicate through the card holder. The communication expansion chip is used to expand the communication methods supported by the electronic device.

7. The communication expansion chip according to claim 6, characterized in that: include: A first pin, used to connect to the first spring of the card holder, and the first pin is also used to receive a power signal; A second pin is used to connect to the second spring of the card holder, and the second pin is also used to receive a clock signal; A third pin is used to connect to the third spring of the card holder, and the third pin is also used to receive a data signal; A fourth pin, used to connect to a fourth spring of the card holder, and the fourth pin is also used to receive a detection signal; A fifth pin, used to connect to a fifth spring of the card holder, and the fifth pin is also used to transmit and receive radio frequency signals; The sixth pin is connected to the ground terminal and is also used to connect to the sixth spring of the card holder.

8. A communication method, characterized in that: For use in a communication circuit according to any one of claims 1 to 4, the communication method comprises: Detecting the type of chip installed in the card holder; When it is detected that a communication expansion chip is installed in the card holder and the communication expansion chip is in an operating state, controlling the radio frequency switch to connect the first end and the second end, so as to connect the card holder and the radio frequency front-end circuit to form a radio frequency path for the first signal; The communication expansion chip is used to expand the communication modes supported by the electronic device.

9. The communication method according to claim 8, wherein: Also includes: When it is detected that the communication expansion chip is installed in the card holder and the communication expansion chip is not working, the radio frequency switch is controlled to connect the second end and the third end to connect the radio frequency front-end circuit and the wireless network chip to form a radio frequency path for the second signal.

10. A communication device, characterized in that: Used in a communication circuit according to any one of claims 1 to 4, the communication device comprising: A control module, configured to detect the type of chip installed in the card holder; The control module is further configured to, upon detecting that a communication expansion chip is installed in the card holder and that the communication expansion chip is in an operating state, control the radio frequency switch to connect the first end and the second end, so as to connect the card holder and the radio frequency front-end circuit, thereby forming a radio frequency path for the first signal; The communication expansion chip is used to expand the communication modes supported by the electronic device. The communication device according to claim 10 , wherein: The control module is further configured to: When it is detected that the communication expansion chip is installed in the card holder and the communication expansion chip is not working, the radio frequency switch is controlled to connect the second end and the third end to connect the radio frequency front-end circuit and the wireless network chip to form a radio frequency path for the second signal.

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