Mobile terminal peripheral module supporting centerless communication

Abstract

The invention provides a mobile terminal peripheral module supporting centerless communication, relates to the technical field of wireless communication, and solves the problem of communication networking requirements of mobile terminals such as a mobile phone and the like under the condition that a mobile network is missing. Each peripheral module is at least connected with one mobile terminal, and the peripheral module and the mobile terminal are connected in a serial port communication mode; a plurality of peripheral modules connected with the mobile terminals are mutually connected through an LPWAN wireless communication protocol, and each peripheral module is used for bearing data message services and voice message services between the connected mobile terminal and other mobile terminals; the peripheral module has an adjustable wireless frequency range so as to be matched with frequency spectrum use limits in different regions; the peripheral module establishes communication with the mobile terminal after integrating a serial port protocol in a mode of applying an SoC chip, performs interaction of service data and realizes corresponding control logic; according to the invention, the user can still realize effective communication in a remote area without cellular network coverage or with poor coverage.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communication, and is applied to communication mobile terminals such as mobile phones, and in particular to a mobile terminal peripheral module supporting centerless communication. Background Art

[0002] With the rapid development of mobile communication technology, mobile terminals such as mobile phones have become an indispensable part of people's daily lives. However, mobile communications are highly dependent on cellular network coverage, and communication between terminals must be achieved through communication base stations and background servers. This leads to higher networking costs, especially in remote areas with low usage rates, and relatively high operating and maintenance expenses. Therefore, many remote or closed areas cannot use mobile communication services or have poor communication effects due to lack of mobile network coverage or low coverage.

[0003] In this context, non-mobile network wireless communication technologies have become an alternative. For example, WiFi technology has a high communication rate, but its power consumption is high and it is not suitable for long-term operation of battery-powered devices. On the other hand, although Bluetooth technology has low power consumption support, it is not suitable for long-distance communication needs due to its short communication distance.

[0004] Due to the lack of low-power, low-cost networking and maintenance, no central node required, and medium- and long-distance communication mobile terminal peripherals such as mobile phones, it is difficult for people to achieve effective communication and collaboration in blind spots where mobile communications cannot cover, or in special environments such as buildings under construction, tunnels, remote areas, or emergency rescue scenarios when disasters occur. In these cases, existing communication methods are often limited by their reliance on public network infrastructure and cannot provide the necessary support. Therefore, there is an urgent need to develop such a technology, which not only needs to achieve encrypted communication through simple terminal peripherals and specific protocol support in the absence of mobile networks, but also can flexibly expand multiple functions to meet communication needs in different scenarios, enhance people's ability to connect with each other in various challenging environments, enhance emergency response efficiency, and ensure personnel safety. Summary of the invention

[0005] The purpose of the present invention is to provide an independently designed peripheral module, so that mobile terminals with serial communication such as mobile phones can be separated from operator networks, WiFi, Bluetooth and other connections, realize medium and long-distance self-organizing network communication, and perform interactive transmission of voice and data. Therefore, the present invention provides a mobile terminal peripheral module that supports centerless communication. Multiple mobile terminals equipped with the module can form a self-organizing communication network through a low-power wide area network (LPWAN). The terminals can establish a communication connection as long as they are within the reach of the wireless signal.

[0006] The present invention adopts the following technical solutions to achieve the purpose:

[0007] A mobile terminal peripheral module supporting centerless communication, each peripheral module is connected to at least one mobile terminal, and the peripheral module and the mobile terminal are connected by serial communication; multiple peripheral modules connected to the mobile terminal are interconnected by LPWAN wireless communication protocol, and each peripheral module is used to carry data message services and voice message services between the connected mobile terminal and other mobile terminals; the peripheral module has an adjustable wireless frequency range, and matches the spectrum usage restrictions in different regions by adjusting the wireless frequency; the peripheral module establishes communication with the mobile terminal after integrating the serial port protocol by applying the SoC chip, interacts with business data and realizes the corresponding control logic.

[0008] Preferably, the peripheral module is powered by a battery; the peripheral module is configured with multiple wake-up modes, each of which is used to wake up the peripheral module that has entered sleep mode due to idle standby.

[0009] Furthermore, the physical architecture of the peripheral module is a chip unit, which is implemented by a SoC chip. The chip unit is respectively connected to a USB to UART unit and a wireless RF unit; the USB to UART unit is connected to a mobile terminal corresponding to the peripheral module, and provides serial port communication support between the chip unit and the mobile terminal; the wireless RF unit is connected to the wireless RF units of other peripheral modules through the LPWAN wireless communication protocol, and realizes wireless communication between chip units of different peripheral modules within a preset wireless signal range.

[0010] Specifically, the SoC chip is configured with RF transceiver function, on-chip system function, UART communication function, GPIO interaction function and extended hardware function; among them, the RF transceiver function is used to integrate the application logic of RF control to realize the RF configuration adjustment of the wireless RF unit; the on-chip system function is used for the secondary development of the business functions of the peripheral module; the UART communication function is used to provide the communication capability of the USB to UART unit; the GPIO interaction function is used to provide IO port interaction control between the peripheral module and the mobile terminal; the extended hardware function is used to support the management and control of the peripheral circuits of the SoC chip.

[0011] Preferably, the LPWAN wireless communication protocol adopts the WIoTa communication protocol, and the type of the WIoTa communication protocol is an asynchronous communication protocol.

[0012] Furthermore, the peripheral module has multiple preset functional states, including:

[0013] The unicast data receiving state is the default resident state of the peripheral module, which is used to monitor and receive unicast data sent from other peripheral modules;

[0014] Send unicast data status, used to send unicast data to other peripheral modules;

[0015] Broadcast terminal information status, used to periodically enter the public radio frequency channel and broadcast the mobile terminal information connected to this peripheral module for other peripheral modules to query and discover;

[0016] Query the status of nearby terminals, which is used to obtain mobile terminal information broadcasted by other peripheral modules through monitoring, and then interact with the mobile terminal connected to this peripheral module;

[0017] The low-power monitoring sleep state is used to enter sleep mode when the peripheral module is idle and standby, while monitoring the wireless air interface wake-up signal and the wake-up signal from the connected mobile terminal.

[0018] Preferably, the preset functional state of the peripheral module also includes:

[0019] Voice intercom status, used to provide point-to-point real-time voice intercom support between different mobile terminals;

[0020] The group chat status is used to configure and determine the group information composed of multiple mobile terminals, and to send and receive broadcast data corresponding to each mobile terminal in the group, including the mobile terminal connected to this peripheral module.

[0021] Preferably, the preset functional state of the peripheral module also includes:

[0022] The emergency rescue state is used to enhance the wireless communication capability between the peripheral module and other peripheral modules by adjusting the wireless radio frequency configuration, and send out a distress signal at the same time; it is also used to reduce the overall power consumption of the peripheral module to receive rescue signals from other peripheral modules;

[0023] The emergency search and rescue state is used to enhance the peripheral module's ability to receive distress signals from other peripheral modules by adjusting the wireless radio frequency configuration, and to respond and send out a rescue signal when receiving the distress signal.

[0024] Preferably, the peripheral module communicates with the mobile terminal to which it is connected via a serial communication frame, and the structure of the serial communication frame includes a frame header, a frame type, a data length, data content, a checksum, and a frame tail.

[0025] Preferably, different peripheral modules communicate with each other through wireless communication frames, and the structure of the wireless communication frames includes frame type, frame attributes, source module ID, destination module ID, frame sequence number and data content; among which, source module ID, destination module ID, frame sequence number and data content are optional.

[0026] In summary, due to the adoption of this technical solution, the beneficial effects of the present invention are as follows:

[0027] The module of the present invention can provide medium and long-distance wireless communication capabilities and form a wireless communication local area network. This allows users to achieve effective communication in remote areas where there is no cellular network coverage or the network coverage is poor. Through this local area network, multiple devices can be connected to each other to form an autonomous communication network, thereby expanding the communication range and improving flexibility.

[0028] The module of the present invention supports multiple communication modes and can carry multiple data services, including but not limited to text short messages, voice short messages, voice group calls and voice intercoms. This diversified communication mode not only meets the needs of different users, but also improves the convenience and practicality of communication. In particular, during emergency rescue, the module can provide key communication support when the existing communication conditions are extremely poor, helping rescuers to quickly establish communication links in the absence of mobile networks, thereby improving rescue efficiency and safety.

[0029] The module of the present invention has the ability to search and find nearby terminal devices by adjusting the RF configuration through its RF transceiver function, and can further obtain the device signal strength based on this, providing a basis for indoor positioning. This function is particularly important in disaster search and rescue, and can assist rescuers in accurately locating the position of trapped people and improve the success rate of search and rescue. At the same time, this function can also be applied to other scenarios that require precise positioning, such as indoor navigation, asset management, etc.

[0030] The module of the present invention also adapts to the spectrum usage restrictions in different regions through its flexible and configurable wireless frequency range, ensuring stable operation in various environments. This not only improves the applicability of the module, but also reduces the communication barriers caused by spectrum restrictions. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the networking topology structure of the peripheral module of the present invention;

[0032] Figure 2 A schematic diagram of the physical architecture of the peripheral module of the present invention;

[0033] Figure 3 It is a schematic diagram of the functional state conversion of the peripheral module of the present invention;

[0034] Figure 4 A schematic diagram of a frame structure of serial communication between a peripheral module and a mobile terminal of the present invention;

[0035] Figure 5 It is a schematic diagram of the frame structure of wireless communication between peripheral modules of the present invention. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] This embodiment provides a mobile terminal peripheral module that supports centerless communication, such as Figure 1 As shown, each peripheral module is connected to at least one mobile terminal, and the peripheral module and the mobile terminal are connected by serial communication; multiple peripheral modules connected to the mobile terminal are connected to each other through the LPWAN wireless communication protocol, and each peripheral module is used to carry data message services and voice message services between the connected mobile terminal and other mobile terminals; the peripheral module has an adjustable wireless frequency range, and matches the spectrum usage restrictions in different regions by adjusting the wireless frequency; the peripheral module establishes communication with the mobile terminal after integrating the serial port protocol by applying the SoC chip, interacts with business data and implements the corresponding control logic.

[0040] In this embodiment, the mobile terminal (such as a smart phone, tablet computer, etc.) is the main operation interface of the user, responsible for initiating and receiving various communication requests. Each mobile terminal is connected to a peripheral module via a serial port communication method. For serial port communication, the purpose is to achieve low-latency, high-reliability data transmission between the peripheral module and the mobile terminal, which is suitable for external scenarios.

[0041] The peripheral module is the communication hub of the entire decentralized communication system network, responsible for processing and forwarding data messages and voice messages. For the LPWAN wireless communication protocol, its purpose is to form a decentralized communication network. The protocol has the characteristics of low power consumption and long distance, and is suitable for scenarios where mobile networks are missing. LPWAN itself is a wireless communication technology designed for low power consumption and long distance communication, which can smoothly solve the shortcomings of traditional wireless communication technology in terms of power consumption, coverage and cost.

[0042] In this embodiment, the peripheral module is developed and designed based on the SoC chip, which can integrate functions such as serial communication, LPWAN wireless communication, frequency adjustment, etc. The SoC chip is also responsible for processing the encapsulation, decapsulation, and verification of data packets to ensure the accuracy and integrity of data transmission.

[0043] In this embodiment, the peripheral module is powered by a battery and has relatively low standby power consumption due to the aforementioned design features. At the same time, the peripheral module is configured with a variety of wake-up methods, each of which is used to wake up the peripheral module that has entered sleep due to idle standby. The wake-up methods may include: wireless air port wake-up, serial port communication wake-up, timed wake-up, physical button wake-up, sensor trigger wake-up and remote wake-up, etc. Those skilled in the art can select the required wake-up method as needed, and all are mature technologies in this field. By configuring a variety of wake-up methods, the peripheral module can efficiently respond to various communication needs with low power consumption, ensuring stable and reliable operation in different application scenarios.

[0044] In summary, multiple mobile terminals equipped with the peripheral modules of this embodiment can form a self-organizing communication network through a wireless network, and each mobile terminal can establish and communicate with other mobile terminals as long as it is within the reach of the wireless signal. This embodiment can be applied to a variety of application scenarios through such a decentralized, low-power, long-distance communication network, and has broad application prospects and important social value.

[0045] Example 2

[0046] Based on Example 1, this example introduces the physical architecture of its peripheral modules in detail. Figure 2 As shown, the physical architecture of the peripheral module is a chip unit, which is implemented by a SoC chip. The chip unit is respectively connected to a USB to UART unit and a wireless RF unit; the USB to UART unit is connected to the mobile terminal corresponding to the peripheral module, and provides serial port communication support between the chip unit and the mobile terminal; the wireless RF unit is connected to the wireless RF units of other peripheral modules through the LPWAN wireless communication protocol, and realizes wireless communication between chip units of different peripheral modules within a preset wireless signal range.

[0047] In this embodiment, the SoC chip is configured with RF transceiver function, system on chip function, UART communication function, GPIO interaction function and extended hardware function; among them, the RF transceiver function is used to integrate the application logic of RF control to realize the RF configuration adjustment of the wireless RF unit; the system on chip function is used for the secondary development of the business functions of the peripheral module; the UART communication function is used to provide the communication capability of the USB to UART unit; the GPIO interaction function is used to provide IO port interaction control between the peripheral module and the mobile terminal; the extended hardware function is used to support the management and control of the peripheral circuits of the SoC chip.

[0048] Regarding the wireless RF related content, first of all, the chip unit is the core of the entire peripheral module, which is responsible for data processing, protocol analysis, and the generation and demodulation of RF signals; it can convert digital signals into analog RF signals for transmission or vice versa for reception. The wireless RF unit is mainly responsible for the physical layer processing of RF signals, such as signal amplification, filtering, matching, etc., to improve the signal quality and transmission distance. It can be seen that the chip unit provides intelligent processing capabilities and can flexibly respond to different application scenario requirements; while the wireless RF unit focuses on improving signal quality and transmission efficiency to ensure the stability and reliability of the communication link.

[0049] Example 3

[0050] On the basis of any of the above embodiments, in this embodiment, the LPWAN wireless communication protocol adopts the WIoTa communication protocol, and the type of the WIoTa communication protocol is an asynchronous communication protocol. The WIoTa communication protocol was developed and proposed by Yuxin Micro. It is a flexibly configurable wireless communication protocol designed for different needs of the Internet of Things. It is also a wide-area wireless communication protocol with completely independent intellectual property rights. Those skilled in the art can refer to and apply the protocol as needed. This embodiment will not repeat the protocol itself.

[0051] The WIoTa communication protocol used in this embodiment uses the WIoTa communication protocol SoC chip as a carrier to implement a peripheral module with no central communication. This asynchronous communication protocol is used as a wireless transmission protocol between each peripheral module node. The WIoTaSoC chip provides external mobile phone connection communication through the UART serial port to interact with data and control instructions.

[0052] The core application features of the WIoTa communication protocol are large coverage, low power consumption, large connections, and low cost. It has an ultra-low sensitivity of -145dbm, a bandwidth of 200 to 400kHz, and a high-order modulation of up to 3bps / Hz. It supports multiple networking modes such as synchronous, asynchronous, and mesh, and can work on sub1G working frequency bands such as 230MHz and 470MHz. The WIoTa communication protocol is flexible and convenient to deploy, and can meet the IoT communication needs in various scenarios. It is particularly suitable for use in the peripheral modules of this embodiment.

[0053] Example 4

[0054] Based on any of the above embodiments, this embodiment introduces multiple preset functional states of the peripheral module, which can be found in Figure 3 The following are some examples:

[0055] The unicast data receiving state is the default resident state of the peripheral module, which is used to monitor and receive unicast data sent from other peripheral modules;

[0056] Send unicast data status, used to send unicast data to other peripheral modules;

[0057] Broadcast terminal information status, used to periodically enter the public radio frequency channel and broadcast the mobile terminal information connected to this peripheral module for other peripheral modules to query and discover;

[0058] Query the status of nearby terminals, which is used to obtain mobile terminal information broadcasted by other peripheral modules through monitoring, and then interact with the mobile terminal connected to this peripheral module;

[0059] The low-power monitoring sleep state is used to enter sleep mode when the peripheral module is idle and standby, while monitoring the wireless air interface wake-up signal and the wake-up signal from the connected mobile terminal.

[0060] In addition to the above-mentioned conventional data interaction status, in terms of voice communication, the status also includes:

[0061] Voice intercom status, used to provide point-to-point real-time voice intercom support between different mobile terminals;

[0062] The group chat status is used to configure and determine the group information composed of multiple mobile terminals, and to send and receive broadcast data corresponding to each mobile terminal in the group, including the mobile terminal connected to this peripheral module.

[0063] In addition, this embodiment also proposes two dedicated functional states for the rescue scenario, as follows:

[0064] The emergency rescue state is used to enhance the wireless communication capability between the peripheral module and other peripheral modules by adjusting the wireless radio frequency configuration, and send out a distress signal at the same time; it is also used to reduce the overall power consumption of the peripheral module to receive rescue signals from other peripheral modules;

[0065] The emergency search and rescue state is used to enhance the peripheral module's ability to receive distress signals from other peripheral modules by adjusting the wireless radio frequency configuration, and to respond and send out a rescue signal when receiving the distress signal.

[0066] The above-mentioned states can be well implemented under the physical architecture of the peripheral module, thereby ensuring the reliability and stability of the peripheral module communication to a large extent, while providing a variety of functional services for users to choose and use.

[0067] Example 5

[0068] Based on any of the above embodiments, this embodiment introduces the communication frame related content of the peripheral module. Figure 4As shown, for the serial communication between the peripheral module and the mobile terminal connected to it, the frame is the minimum structure, that is, the serial communication frame, including the frame header, frame type, data length, data content, checksum and frame tail. The design of the frame structure helps to improve the reliability of communication and reduce the occurrence of errors. The various parts of this embodiment are introduced as follows:

[0069] The frame header is the start mark of each frame of data, which is used to tell the receiver that a new data packet is about to arrive; it usually consists of one or several predefined bytes, and the selection of these bytes needs to avoid conflict with normal data content.

[0070] The frame type is used to identify the purpose or category of the frame data, such as control command, status report or data transmission; different frame types can trigger different processing logic at the receiving end.

[0071] The data length field indicates the actual size (in bytes) of the data content that follows; this information is crucial for the receiver to correctly parse the subsequent data.

[0072] The data content part contains the actual information to be transmitted; it can be any form of data such as a series of commands, parameter settings, measurement results, etc.

[0073] In order to ensure the accuracy of data transmission, check information is usually added to each frame of data; the most common method is to use a simple parity check or a more complex cyclic redundancy check (CRC); the receiver will recalculate the check value of the received data according to the algorithm provided by the sender and compare it with the check value in the frame. If the two do not match, it is considered that an error has occurred in the transmission of the frame data.

[0074] The frame tail is the end mark of a frame of data, usually one or several specific bytes, which is used to inform the receiver that the frame data has been completely received; sometimes this part is omitted, especially when the data length is already clear.

[0075] Through the structure of the above serial communication frame, the mobile terminal's application data transmission and reception, wireless network management, wireless network configuration, voice intercom call management, emergency rescue management, low-power sleep management and other related functions can be realized.

[0076] In this embodiment, Figure 5 As shown in the figure, different peripheral modules also use frames as the minimum structure, that is, they communicate through wireless communication frames. The structure of wireless communication frames includes frame type, frame attributes, source module ID, destination module ID, frame sequence number and data content; among them, source module ID, destination module ID, frame sequence number and data content are optional. The frame structure design here can optimize the efficiency of data transmission. The following is an introduction to each part:

[0077] The frame type has the same meaning as the aforementioned serial communication frame. This field is used to identify the type or purpose of the frame. For example, it can indicate that this is a control frame (such as request, confirmation, etc.), a data frame (carrying actual information), or other types of frames. By clarifying the type of the frame, the receiver can immediately know how to process the received data.

[0078] The frame attribute field usually contains some additional information about the frame, such as priority, encryption flag, error detection and correction capabilities, etc. This information helps the receiver better understand and process the received data.

[0079] The source module ID identifies the peripheral module or mobile terminal that sent the frame. This field is very useful for tracing the source of data, troubleshooting, and implementing certain security functions. When the sender identity is not required, this field can be omitted to reduce the frame size.

[0080] The destination module ID specifies the target address of the frame, that is, which peripheral module or corresponding mobile terminal should receive and process the frame. This is essential to ensure that the data is correctly delivered to the designated recipient. Similar to the source module ID, if the context has already clarified the target or broadcast to all nodes, this field can be omitted.

[0081] The frame sequence number is used to identify the order of frames, which is very important when multiple frames need to be processed in order. It helps the receiver reassemble the correct data sequence, especially when there is packet loss or out-of-order reception. For single-frame transmission or application scenarios where the order is not important, this field can be omitted.

[0082] The data content has the same meaning as the aforementioned serial communication frame. This field carries the actual information to be transmitted. Depending on the application scenario, the length of this part may vary greatly, ranging from a few bytes to thousands of bytes. If the frame is only used for control purposes and does not carry any user data, there may be no data content part.

[0083] This embodiment allows developers to selectively use various fields according to specific needs through this flexible frame structure design, thereby minimizing unnecessary overhead while ensuring necessary functions and improving overall data transmission efficiency. For example, in a simple point-to-point wireless communication connection, the source module ID and the destination module ID may not be required; while in a complex multi-hop network environment, all fields may be required.

[0084] After the above design, combined with the functional content of the peripheral module of this embodiment, the following are the implementation strategies of three exemplary functions:

[0085] 1. Broadcast terminal information: When in idle state, the peripheral module will periodically switch to the broadcast channel to send information about the connected mobile terminal. The cycle time can be configured by the mobile terminal, and a random time is added to avoid continuous conflicts in the information of multiple peripheral modules.

[0086] 2. Query nearby terminals: Switch to the terminal information broadcast channel, listen to and receive terminal information sent by other peripheral modules, and exit receiving after timeout (the timeout period is controllable, and you can also exit in advance) and switch back to the default unicast data receiving state.

[0087] 3. Voice intercom call: send an intercom call request command to the destination module. After receiving the request, the destination module scans the intercom channel list to obtain an idle channel and feeds back a call acceptance command to the call request initiating module (it can also reject the call). The peripheral modules of both parties of the intercom switch to the idle intercom channel obtained by scanning and start intercom communication. When the call ends, send a call end command to the other party and switch back to the default state of receiving unicast data. The mobile terminal peripheral module that receives the call end command directly switches to the default state of receiving unicast data.

Claims

1. A mobile terminal peripheral module supporting centerless communication, characterized in that: Each peripheral module is connected to at least one mobile terminal, and the peripheral module and the mobile terminal are connected by serial communication; multiple peripheral modules connected to the mobile terminal are connected to each other through the LPWAN wireless communication protocol, and each peripheral module is used to carry data message services and voice message services between the connected mobile terminal and other mobile terminals; The peripheral module has an adjustable wireless frequency range and matches spectrum usage restrictions in different regions by adjusting the wireless frequency. The peripheral module establishes communication with the mobile terminal by applying the SoC chip and integrating the serial port protocol to interact with business data and implement corresponding control logic.

2. The mobile terminal peripheral module according to claim 1, characterized in that: The peripheral module is powered by a battery; the peripheral module is configured with multiple wake-up modes, and each wake-up mode is used to wake up the peripheral module that has entered sleep mode due to idle standby.

3. The mobile terminal peripheral module according to claim 1, characterized in that: The physical architecture of the peripheral module is a chip unit, which is implemented by a SoC chip. The chip unit is connected to a USB to UART unit and a wireless radio frequency unit respectively; the USB to UART unit is connected to the mobile terminal corresponding to the peripheral module, and provides serial port communication support between the chip unit and the mobile terminal; The wireless radio frequency unit is connected to the wireless radio frequency units of other peripheral modules through the LPWAN wireless communication protocol, and realizes wireless communication between the chip units of different peripheral modules within the preset wireless signal range.

4. The mobile terminal peripheral module according to claim 3, characterized in that: The SoC chip is configured with RF transceiver function, on-chip system function, UART communication function, GPIO interaction function and extended hardware function; among them, the RF transceiver function is used to integrate the application logic of RF control and realize the RF configuration adjustment of the wireless RF unit; the on-chip system function is used for the secondary development of the business functions of the peripheral module; the UART communication function is used to provide the communication capability of the USB to UART unit; the GPIO interaction function is used to provide IO port interaction control between the peripheral module and the mobile terminal; the extended hardware function is used to support the management and control of the peripheral circuits of the SoC chip.

5. The mobile terminal peripheral module according to claim 3, characterized in that: The LPWAN wireless communication protocol adopts the WIoTa communication protocol, and the type of the WIoTa communication protocol is an asynchronous communication protocol.

6. The mobile terminal peripheral module according to claim 1, characterized in that: The peripheral modules have multiple preset functional states, including: The unicast data receiving state is the default resident state of the peripheral module, which is used to monitor and receive unicast data sent from other peripheral modules; Send unicast data status, used to send unicast data to other peripheral modules; Broadcast terminal information status, used to periodically enter the public radio frequency channel and broadcast the mobile terminal information connected to this peripheral module for other peripheral modules to query and discover; Query the status of nearby terminals, which is used to obtain mobile terminal information broadcasted by other peripheral modules through monitoring, and then interact with the mobile terminal connected to this peripheral module; The low-power monitoring sleep state is used to enter sleep mode when the peripheral module is idle and standby, while monitoring the wireless air interface wake-up signal and the wake-up signal from the connected mobile terminal.

7. The mobile terminal peripheral module according to claim 6, characterized in that: The preset functional states of the peripheral modules also include: Voice intercom status, used to provide point-to-point real-time voice intercom support between different mobile terminals; The group chat status is used to configure and determine the group information composed of multiple mobile terminals, and to send and receive broadcast data corresponding to each mobile terminal in the group, including the mobile terminal connected to this peripheral module.

8. The mobile terminal peripheral module according to claim 6, characterized in that: The preset functional states of the peripheral modules also include: The emergency rescue state is used to enhance the wireless communication capability between the peripheral module and other peripheral modules by adjusting the wireless radio frequency configuration, and send out a distress signal at the same time; it is also used to reduce the overall power consumption of the peripheral module to receive rescue signals from other peripheral modules; The emergency search and rescue state is used to enhance the peripheral module's ability to receive distress signals from other peripheral modules by adjusting the wireless radio frequency configuration, and to respond and send out a rescue signal when receiving the distress signal.

9. The mobile terminal peripheral module according to claim 1, characterized in that: The peripheral module communicates with the mobile terminal to which it is connected via a serial communication frame. The structure of the serial communication frame includes a frame header, a frame type, a data length, a data content, a checksum, and a frame tail.

10. The mobile terminal peripheral module according to claim 9, characterized in that: Different peripheral modules communicate with each other through wireless communication frames. The structure of the wireless communication frame includes frame type, frame attributes, source module ID, destination module ID, frame sequence number and data content; among them, the source module ID, destination module ID, frame sequence number and data content are optional.

Images