Modular and integrated solution for wifi and esim data read and write for hardware devices

Abstract

The application provides a complete integration scheme for a hardware device WiFi and eSIM system, including a WiFi eSIM module (a WiFi chip and eSIM, a master control circuit design, a circuit software program), a WiFi protocol, an encapsulation of a host computer program and an SDK, connection of the device and the eSIM through a host computer network and a host computer program, connection of a DP+ server SGP.22 protocol configuration operator profile file reading and writing and activation, communication of a device system with the eSIM through master control switching of a communication module, and a terminal device networking purpose. In addition, the system integration scheme of the application also supports an SGP.32 protocol specification, remote management of an eIM server, and distribution of an operator profile configuration without manual on-site operation. The scheme can be applied to a wide range of terminal devices that need to be networked, and is a general software and hardware complete scheme. The scheme solves the problem of complicated integration work of different types of communication modules of networked devices, reduces the requirements of terminal devices, reduces technical costs, and improves the work efficiency of eSIM download and activation. Various terminal devices that need to be networked only need to integrate the WiFi eSIM module of the application, so that the reading and writing of eSIM data can be realized, and the networking purpose can be achieved.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and more specifically to a method for reading and writing WiFi and eSIM profiles and a complete software and hardware system integration solution, which significantly reduces deployment complexity and simultaneously reduces bandwidth and energy consumption. It is particularly suitable for integration into resource-constrained scenarios such as IoT and LPWAN, as well as IoT terminals and other devices that require network connectivity. Background Technology

[0002] With the widespread adoption of eSIM technology (embedded SIM cards and removable eSIM cards), users can connect to a designated operator's network and enable communication capabilities by sending commands to the eSIM through software.

[0003] In existing eSIM device integration solutions, an LPA (IoT Profile Assistant) is integrated into the device's communication module or main control MCU to read and write eSIM profiles. This LPA integration method requires extensive and tedious R&D work to adapt to different communication module models and to handle the switching between the device's modem and the LPA for eSIM communication. It is technically demanding and consumes significant time and resources. In terms of usage, the initial network connection requires a seed number or the use of a SIM card slot for initial profile download and activation, and may even necessitate device disassembly. This places excessive demands on on-site device operation, resulting in low efficiency and cumbersome procedures. Summary of the Invention

[0004] This application provides a complete solution for integrating WiFi and eSIM systems in hardware devices, including a WiFi eSIM module (WiFi and eSIM, main control circuit design, circuit software program), WiFi protocol, firmware burning, host computer program and SDK encapsulation. The device communicates with the eSIM via the host computer network and program, connects to a DP+ server using the SGP.22 protocol to read and write operator profile files and activate them. The device system switches communication modules with the eSIM through the main control, achieving network connectivity for the terminal device. This solution is applicable to a wide range of network-enabled terminal devices and is a universal, complete hardware and software integration solution. It solves the problem of cumbersome integration of communication modules for different models of network-enabled devices, reduces terminal device requirements and technical costs, and improves the efficiency of eSIM download and activation. Various terminal devices with network needs only need to integrate the WiFi eSIM module of this application to achieve eSIM data reading and writing, thereby achieving network connectivity. Furthermore, this system integration solution also supports the SGP.32 protocol specification, remote management of the eIM server, and distribution of operator profile configurations, eliminating the need for manual on-site operation and truly achieving "local access across borders." It simplifies the many-to-many connection between operators and devices into a "one-to-one platform", significantly reducing deployment complexity and simultaneously reducing bandwidth and energy consumption, making it particularly suitable for resource-constrained scenarios such as NB-IoT and LPWAN.

[0005] The detailed steps of the hardware device WiFi and eSIM system integration solution provided in this application include:

[0006] The terminal device has a communication module and a power supply system, and integrates this solution's system package. The packaging can be module-based, chip-based, or directly mounted on the circuit. The eSIM form factor is not limited to eSIM chips and eSIM plug-in cards. The independent circuit adaptability range supports 1.8V to 3.3V.

[0007] Step S1: First, the host computer program connects to the terminal device via WiFi and reads the eSIM data. Then, it connects to the DP+ server via the network to request a profile data packet for the eSIM. Data transmission between the host computer program and the terminal device occurs via WiFi.

[0008] In step S2, the host computer program sends the profile data packet to the WiFi eSIM module of the terminal device via the WiFi protocol. The WiFi eSIM module parses the received data and writes the obtained profile configuration file into the eSIM.

[0009] Step S3: After the WiFi eSIM module successfully activates its profile, it notifies the terminal device to refresh the eSIM data. The communication module then performs network registration, enabling the terminal device to connect to the internet. The WiFi eSIM module profile download and activation logic of this application is applicable to all eligible terminal devices. It only requires compatibility with WiFi protocols and standard packaging such as the ISO7816 protocol, eliminating the difficulties of integrating an LPA and coordinating information exchange between the eSIM and the communication module. Attached Figure Description

[0010] Figure 1 Hardware Principles Figure 1 This is a schematic diagram of the circuit principle for controlling the WiFi and terminal device communication module and eSIM communication interaction through the main control chip in one embodiment; the logic method of this application is not limited to the circuit design form.

[0011] Figure 2 Hardware Principles Figure 2 In one embodiment, the main control system is placed in the eSIM chip, and the circuit diagram shows the control of WiFi and terminal device communication modules through the eSIM main control system to communicate and interact with the eSIM; the logic method of this application is not limited to the circuit design form.

[0012] Figure 3 Hardware Principles Figure 3 In one embodiment, the main control system is placed in the WiFi chip, and the circuit diagram shows the interaction between the WiFi and terminal device communication modules and eSIM communication through the main control system in the WiFi. The logic method of this application is not limited to the circuit design form.

[0013] Figure 4 The application environment diagram is a schematic diagram of an application environment in which a terminal device uses WiFi to implement eSIM configuration file download communication in one embodiment.

[0014] Figure 5 The flowchart is a schematic diagram of the download method of a terminal device through a WiFi eSIM module in an example.

[0015] Figure 6 The operation steps diagram is a complete flowchart of the terminal device's WiFi connection operation, including downloading the eSIM profile configuration file and joining the network in an example.

[0016] Figure 7 The information flow diagram is a complete interactive information flow illustration of downloading the profile configuration file in one instance.

[0017] Figure 8The eIM application environment diagram is a schematic diagram of an application environment in which a terminal device that has been connected to the network remotely realizes communication between the SM-DP+ system of different operators and the device-side eSIM configuration file download through the eIM system of the SGP.32 protocol specification in one embodiment.

[0018] Figure 9 The operation steps diagram illustrates the complete process of a network-connected terminal device remotely downloading profile configuration files and joining the network via the eIM system of the SGP.32 protocol specification through different operators' SM-DP+ systems and the device's eSIM. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed and complete description of this application is provided in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] In related technologies, regardless of whether a terminal device with network connectivity needs has a page display function, in eSIM device solutions, the provision of an initial network and the integration of communication modules of different devices with LPA (IoT Profile Assistant) to achieve the purpose of reading and writing eSIM profile files are all unavoidable drawbacks, including a large amount of R&D adaptation work, technical difficulty, and high costs. Example 1

[0021] According to Embodiment 1 of this application, a solution example is provided that is applicable to a wide range of terminal devices with networking needs, and is convenient, fast, and cost-effective in integration. It should be noted that in the accompanying drawings... Figure 6 The operation steps shown can be executed in systems such as host computer devices, engineering machines, and mobile phones. Although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than that shown here.

[0022] Figure 1 The terminal device described in this application integrates the hardware schematic of the WiFi eSIM module (including WiFi, eSIM, main control chip, and protocol processing system) provided in this application. The main control chip controls the WiFi and terminal device communication module to communicate and interact with the eSIM. It should be noted that the logical method of this application is not limited to the circuit design form.

[0023] like Figure 2The main control system is located in the eSIM chip. The circuit diagram shows the main control system of the eSIM controlling the WiFi and terminal device communication modules to communicate and interact with the eSIM.

[0024] like Figure 3 A schematic diagram of the circuit principle for controlling the WiFi and terminal device communication modules and interacting with eSIM through the main control system in the WiFi chip;

[0025] The above are all integration methods for the WiFi eSIM module of the terminal device in this application.

[0026] Figure 4 This application demonstrates the connection relationship between the WiFi eSIM module integrated into the terminal device and the eSIM profile download method. The host computer program and the terminal device communicate via WiFi, and the host computer includes, but is not limited to, engineering equipment, mobile phones, and tablets. The SM-DP+ server serves as the management server for the operator's eSIM profile, and communicates with the host computer program via the SGP.22 protocol.

[0027] Figure 6 This document describes the complete operational flow of the hardware device WiFi and eSIM system integration solution provided in this application example. It details the communication process between the terminal device's communication module and the WiFi eSIM module, as well as the host computer program and server. Key steps include terminal device startup self-test, communication module startup, and eSIM data read / write. Specifically, after the terminal device starts, the program performs a self-test of each module, and the WiFi eSIM module is ready. The host computer program connects to the device via WiFi, establishes a connection with the eSIM, and reads eSIM data such as eID. The program then inputs an operator activation code or scans a QR code, and connects to the DP+ server for verification. First, it checks if the submitted information and link are compliant, then confirms the accuracy and usability of the profile configuration file. If so, an SGP.22 secure channel is established, the profile configuration file is downloaded, and written to the eSIM via the WiFi protocol channel. The activation command is then actively executed. Upon successful activation, the WiFi connection between the terminal device and the host computer program is disconnected. The WiFi eSIM module simultaneously notifies the terminal device's communication module to refresh the eSIM profile data. The communication module initiates the network registration process, and the terminal device successfully joins the network.

[0028] Figure 7This diagram illustrates the complete information flow of WiFi connection operation, eSIM profile download, and network access for the terminal device's WiFi and eSIM system integration scheme as described in this application. The information flow steps are as follows: The host computer program connects to the terminal device's WiFi eSIM via WiFi, obtains eSIM data information, enters the operator activation code or scans a QR code in the host computer program, establishes an SGP.22 protocol link with the DP+ server, and verifies the eSIM data and profile configuration information. The host computer program obtains the profile configuration file returned by the DP+ server, transmits the profile to the terminal device's eSIM via WiFi protocol, and performs an activation operation. After successful eSIM profile activation, the connection between the host computer program and the WiFi eSIM module is disconnected. Simultaneously, the WiFi eSIM module information is synchronized to the terminal device's communication module for status updates. The communication module initiates the network access operation based on the activated profile, enabling the entire terminal device to successfully access the network.

[0029] The following section provides a detailed explanation of the complete solution for integrating WiFi and eSIM systems in hardware devices, using specific examples.

[0030] According to the embodiments of this application, such as Figure 5 As shown, the method for a terminal device to access the network by reading, writing, and downloading the profile configuration file through a WiFi eSIM module and a host computer program specifically includes:

[0031] Step S1: First, the host computer program connects to the terminal device via WiFi and reads the eSIM data. Then, the host computer program connects to the DP+ server via the network to request a profile data packet for the eSIM. Data transmission between the host computer program and the terminal device occurs via WiFi.

[0032] In step S2, the host computer program sends the profile data packet to the WiFi eSIM module of the terminal device via the WiFi protocol. The WiFi eSIM module parses the received data and writes the obtained profile configuration file into the eSIM.

[0033] Step S3: After the WiFi eSIM module successfully activates its profile, it notifies the terminal device to refresh the eSIM data. The communication module then performs network registration, enabling the terminal device to connect to the internet. The WiFi eSIM module profile download and activation logic of this application is applicable to all eligible terminal devices. It only requires compatibility with WiFi protocols and standard packaging such as the ISO7816 protocol, eliminating the difficulties of integrating an LPA and coordinating information exchange between the eSIM and the communication module. Example 2

[0034] According to Embodiment 2 of this application, after the terminal device has network connectivity functionality via Embodiment 1 or by having a seed number written at the factory, it can be remotely managed directly through the eIM system conforming to the SGP.32 protocol specification to operate the device's eSIM to read and write different operator profile configuration files and switch network access functions. This reduces manual on-site operation and greatly improves work efficiency.

[0035] The following example provides a detailed explanation of the complete solution for integrating WiFi and eSIM systems in hardware devices, Example 2 of this application.

[0036] Figure 8 The terminal device of Embodiment 2 of this application has network connectivity function through the seed number written in Embodiment 1 or at the factory. The eIM server establishes an SGP.32 protocol verification channel for the device and the SM-DP+ server to realize the relationship display of eSIM profile reading and writing. Among them, the SM-DP+ server is the management server for different operator profile configuration files.

[0037] Figure 9 Example 2 of this application provides a remote management process for the eIM system, which uses the SGP.32 protocol to remotely operate the device's eSIM to read and write different operator profile configuration files and switch network access functions. This process includes key steps such as terminal device startup self-test, communication module startup, and eSIM data read / write. Specifically, after the device starts, the program self-tests each module, confirming that the operator configuration profile has been activated for network access. The terminal device connects to the eIM platform and reports data via the SGP.32 protocol. The eIM system verifies the device status and eSIM information, establishes a connection with the SM-DP+ server, downloads the profile configuration file to the device through the SGP.32 secure channel, transmits it to the eSIM, and executes the switch and activation command. Upon success, the WiFi eSIM module synchronously notifies the terminal device's communication module to refresh the eSIM profile data. The communication module then initiates the network access process, and the terminal device successfully switches to the network.

Claims

1. A method for reading and writing WiFi and eSIM profiles for hardware devices and a complete hardware and software system integration solution, including a WiFi eSIM module (WiFi and eSIM, main control circuit design, circuit software program), WiFi protocol, host computer program and SDK encapsulation, connecting the device to communicate with the eSIM through the host computer network and host computer program, connecting to the DP+ server to configure operator profile file reading, writing and activation via SGP.22 protocol, and the device system switching the communication module to communicate with the eSIM through the main control to achieve the purpose of terminal device networking.

2. The integration method according to claim 1, further comprising the following hardware features: It integrates a WiFi chip, eSIM, and a main control chip. The main control chip controls the WiFi and terminal device communication module to communicate and interact with the eSIM, and is not limited to any particular circuit design.

3. The integration method according to claim 1, further comprising the following hardware features: The main control system is located in the eSIM chip. The main control system of the eSIM controls the WiFi and terminal device communication modules to communicate and interact with the eSIM, and is not limited to the circuit design.

4. The integration method according to claim 1, further comprising the following hardware features: The main control system is placed in the WiFi chip. The WiFi communication module and eSIM communication interaction are controlled by the main control system in the WiFi chip, and are not limited to the circuit design.

5. A WiFi eSIM module, characterized in that, It includes a data interaction processing module for the eSIM chip and the WiFi chip.

6. A WiFi eSIM module, characterized in that, It includes a data interaction processing module for the eSIM card and the WiFi chip.

7. A method for integrating eSIM to read, write, and download profile configuration files in a terminal device, characterized in that: The terminal device integrates an eSIM (chip or pluggable SIM card slot) and a WiFi chip, and the method includes: The host computer program connects to the terminal device via WiFi, reads eSIM data, and connects to the DP+ server via the network to request profile data packets for the eSIM. The host computer program sends the profile data packet to the WiFi eSIM module of the terminal device via the WiFi protocol. The WiFi eSIM module parses the received data and writes the profile configuration file into the eSIM. The WiFi eSIM module notifies the terminal device to refresh the eSIM data, enabling the terminal device to register on the network.

8. The method according to claim 7, characterized in that, Connect the terminal device to the host computer program so that the host computer program can display and access the management interface of the terminal device.

9. The method according to claim 7, wherein the terminal device's WiFi module is connected to the host computer program, and its feature is further... Includes WiFi and eSIM data processing modules.

10. A low-power WiFi and eSIM system for a terminal device, characterized in that, The system includes a host computer program, a WiFi eSIM terminal device, and an SM-DP+ server; wherein the terminal also includes a protocol conversion module, an eSIM communication module, and a WiFi protocol module.

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