Embedded sim card, communication system, communication method, and storage medium

Abstract

The application discloses an embedded SIM card, a communication system, a communication method and a storage medium, and belongs to the technical field of SIM cards. The embedded SIM card comprises a Bluetooth unit, a communication unit, a processing unit and a power management unit. The Bluetooth unit is used for receiving an operation instruction sent by a client. The communication unit is used for transmitting the operation instruction. The processing unit is used for executing the operation instruction and sending an execution result to the Bluetooth unit through the communication unit. When the embedded SIM card is inserted into a terminal device, the power management unit can supply power to the Bluetooth unit. When the embedded SIM card is pulled out, the power management unit cannot supply power to the Bluetooth unit. The Bluetooth unit and the processing unit are stacked. The Bluetooth unit, the communication unit, the processing unit and the power management unit are integrated in a single package. The application can solve the problems of large volume, high power consumption and difficult inventory adaptation of the existing eSIM card, and can be widely applied to IoT terminals, wearable devices, Internet of Vehicles, inventory mobile phones and other scenes.

Description

Technical Field

[0001] This application relates to the field of embedded SIM card technology, specifically to an embedded SIM card, a communication system, a communication method, and a storage medium. Background Technology

[0002] With the advent of IoT devices and eSIM (Embedded-Subscriber Identity Module) phones, the eSIM industry is developing rapidly. However, existing eSIM solutions only communicate with the outside world through ISO 7816 or SWP (Single Wire Protocol) interfaces. Operations such as downloading, enabling, disabling, and deleting profiles require that the terminal device correctly implements the LPA (Local Profile Assistant) / IPA (IoT Profile Assistant). However, many current mobile phones and IoT (Internet of Things) terminals only have traditional Nano-SIM (pluggable SIM) card slots and ISO 7816 interfaces in terms of hardware. Furthermore, they lack or cannot upgrade to support LPA / IPA in terms of software. In addition, due to closed systems or limited Flash capacity, the adaptation work for secondary LPA / IPA porting is enormous, and it may even be impossible to complete the secondary LPA / IPA porting due to vendor permission issues. Therefore, promoting eSIM services on these devices is extremely costly and difficult for operators and equipment manufacturers, and may even be completely impossible. Summary of the Invention

[0003] This application provides an embedded SIM card, a communication system, a communication method, and a storage medium, which can solve the problems of large size, high power consumption, and difficulty in adapting to existing devices in existing eSIM cards. It can be widely used in IoT terminals, wearable devices, connected vehicles, and existing mobile phones, facilitating the promotion of eSIM services by operators and equipment manufacturers. The technical solution is as follows:

[0004] On the one hand, an embedded SIM card is provided, the embedded SIM card comprising:

[0005] A Bluetooth unit is used to connect to a client and receive operation commands sent by the client;

[0006] A communication unit is used to transmit the operation commands and to ensure that the Bluetooth unit communicates with external devices;

[0007] The processing unit is used to execute the operation instructions and send the execution results to the Bluetooth unit through the communication unit;

[0008] The power management unit has its input terminal connected to the power pin of the embedded SIM card and its output terminal connected to the Bluetooth unit. When the embedded SIM card is inserted into the terminal device, the power management unit can supply power to the Bluetooth unit; when the embedded SIM card is removed, the power management unit cannot supply power to the Bluetooth unit.

[0009] The Bluetooth unit is also used to send the execution result back to the client after receiving the execution result sent by the processing unit;

[0010] The Bluetooth unit and the processing unit are stacked together, and the Bluetooth unit, the communication unit, the processing unit and the power management unit are all integrated into a single package.

[0011] Optionally, the Bluetooth unit includes a Bluetooth chip die; the processing unit includes an eSIM chip die.

[0012] Optionally, the Bluetooth chip die is stacked on top of the eSIM chip die.

[0013] Optionally, the single package is a system-in-package; the package shape of the single package meets any one of the 4FFNano-SIM card standard, DFN8 packaging standard, or WLCSP packaging standard.

[0014] Optionally, the communication unit includes:

[0015] An antenna module is used to ensure that the Bluetooth unit can communicate with external devices;

[0016] The transmission module is used to transmit the operation instructions and the execution results to realize communication between the Bluetooth unit and the processing unit.

[0017] Optionally, the power management unit includes:

[0018] A voltage regulation module is used to adjust the voltage corresponding to the power supply pin to the required voltage of the Bluetooth unit.

[0019] On the other hand, a communication system is provided, the communication system comprising: a client, a server, and a terminal device; the terminal device is equipped with the aforementioned embedded SIM card;

[0020] The client is connected to both the server and the terminal device. The client is used to generate operation instructions and send the operation instructions to the terminal device.

[0021] The terminal device is used to execute the operation command through the embedded SIM card and to feed back the execution result of the operation command to the client;

[0022] The client is also used to send the execution result to the server;

[0023] The server is used to determine whether the operation is allowed based on the execution result, and when the operation is allowed, it sends the corresponding data packet to the client.

[0024] Optionally, after the server sends the data packet to the client, the client is further configured to transmit the data packet to the terminal device;

[0025] The terminal device is also used to process the data packets through the embedded SIM card, so that the terminal device can perform corresponding functions.

[0026] On the other hand, a communication method is provided, applied to the aforementioned embedded SIM card, the method comprising:

[0027] In response to a connection request, a connection is established with the client, and operation instructions are received from the client;

[0028] The server executes the operation instruction and sends the execution result back to the client so that the server can determine whether the operation is allowed.

[0029] The terminal device with the embedded SIM card installed receives data packets sent by the client to enable the terminal device to perform the corresponding functions.

[0030] On the other hand, a computer-readable storage medium is provided, wherein a computer program is stored therein, and the computer program can be executed by a processor to implement the steps of the communication method described above.

[0031] On the other hand, a computer program product containing instructions is provided, which, when executed on a computer, cause the computer to perform the steps of the communication method described above.

[0032] The technical solution provided in this application can bring at least the following beneficial effects:

[0033] The embedded SIM card of this application integrates a Bluetooth unit, a communication unit, a processing unit, and a power management unit into a single package, enabling the embedded SIM card to communicate with external devices such as clients. This allows terminal devices equipped with the embedded SIM card to possess complete LPA / IPA functionality without modification, facilitating operators in promoting eSIM services in mobile phones and IoT terminals while reducing costs and complexity. Furthermore, the stacked arrangement of the Bluetooth unit and processing unit reduces the area of ​​the embedded SIM card. Additionally, the power management unit manages the Bluetooth unit, ensuring zero power consumption when the Bluetooth unit is not in use. Therefore, the embedded SIM card in this application solves the problems of large size, high power consumption, external antenna, and difficulty in adapting to existing devices associated with existing eSIMs, and can be widely used in IoT terminals, wearable devices, connected vehicles, and existing mobile phones. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of an embedded SIM card provided in an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of another embedded SIM card provided in an embodiment of this application;

[0036] Figure 3 This is a schematic diagram of another embedded SIM card provided in an embodiment of this application;

[0037] Figure 4 This is a schematic diagram of another embedded SIM card provided in an embodiment of this application;

[0038] Figure 5 This application provides a schematic diagram of the structure of a communication system according to an embodiment of the present application.

[0039] Figure 6 A flowchart illustrating a communication method provided in an embodiment of this application. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0041] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0042] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0043] Before providing a detailed description of the embedded SIM card provided in the embodiments of this application, let's first introduce the terminology and application scenarios involved in the embodiments of this application.

[0044] SIM: Identity Authentication Module, usually referring to the SIM card, which is a type of universal integrated circuit card. Its function is to authenticate legitimate users of the operator's network.

[0045] eUICC / eSIM: A pluggable or embedded universal integrated circuit card, usually referring to an eSIM card, which supports remote and local management of profiles in a secure manner;

[0046] cos (Chip Operating System): The underlying software running on eUICC, responsible for executing specific security instructions, managing the file system, and processing APDU commands, etc.

[0047] BLE (Bluetooth Low Energy): A wireless personal area network technology designed by the Bluetooth Special Interest Group (SIG), which complements and enhances the traditional Classic Bluetooth.

[0048] ISO 7816 (International Organization for Standardization 7816): International standard electrical interface protocol for smart cards (including SIM cards);

[0049] SiP (System in Package): Integrating multiple electronic components with different functions (such as chips, resistors, capacitors, etc.) into the same package to form a complete or nearly complete system or subsystem.

[0050] Profile: This refers to a series of data and applications stored in a regular SIM card or eUICC card, and is often referred to as a code number in the industry.

[0051] SM-DP+ (Subscription Manager DataPreparationPlus): Its main functions include preparing profiles, encrypting, storing, and distributing profiles to specified eSIM devices, essentially acting as an eSIM card manufacturer.

[0052] LPA: Local Profile Assistant, also known as Local Profile Assistant, features include assisting with profile downloading, profile management (profile enabling, profile disabling, profile deletion, profile information query), and providing a profile management interface;

[0053] GSMA (GSMAs Association, International Telecommunication Union): Its main participants include operators, card manufacturers, and terminal equipment manufacturers. It is responsible for the overall technical standards and specifications and unified coordination involving communication, profile, core network and other fields.

[0054] Many current mobile phones and IoT terminals only have traditional Nano-SIM card slots and ISO 7816 interfaces in terms of hardware, and lack or cannot be upgraded to support LPA / IPA in terms of software. Furthermore, due to closed systems or limited Flash capacity, the adaptation work for secondary LPA / IPA porting is enormous, and may even be impossible due to vendor permission issues. Therefore, promoting eSIM services on these devices by operators or equipment manufacturers is extremely costly, difficult, and may even be completely impossible.

[0055] Some related technologies employ an architecture with an external Bluetooth chip and a built-in eSIM card to address the aforementioned issues. However, in this architecture, the interaction between the app and the eSIM card requires sequential communication through the Bluetooth chip, cellular module, and eSIM card, resulting in a long interaction path, low efficiency, and high development difficulty. Other related technologies utilize a traditional eSIM security chip combined with an external BLE SoC (Bluetooth System on Chip). However, this architecture separates the two chips, requiring additional PCB area and making it difficult to fit into a Nano-SIM package. The BLE SoC also requires an external power supply, and the external antenna needs manual adjustment, leading to poor consistency and potential leakage even after power loss. Still other related technologies employ a single-chip eSIM combined with a BLE Combo (a chip / module integrating both classic Bluetooth and Bluetooth Low Energy technologies). However, this architecture requires an external antenna, and power management cannot achieve the "power on when the card is inserted, power off when the card is removed" functionality.

[0056] Based on this, the present application provides an embedded SIM card that integrates a Bluetooth unit, a communication unit, a processing unit, and a power management unit into a single package. This solves the problems of large size, high power consumption, external antenna, and difficulty in adapting to existing devices that exist in eSIMs. It can be widely used in IoT terminals, wearable devices, vehicle networking, existing mobile phones, and other scenarios.

[0057] Please refer to Figure 1 , Figure 1 This is a schematic diagram of an embedded SIM card provided in an embodiment of this application. The embedded SIM card includes: a Bluetooth unit 1, a communication unit 2, a processing unit 3, and a power management unit 4.

[0058] Bluetooth unit 1 is used to connect to the client and receive operation commands sent by the client. Communication unit 2 is used to transmit operation commands and ensure communication between Bluetooth unit 1 and external devices. Processing unit 3 is used to execute operation commands and send execution results to Bluetooth unit 1 through communication unit 2. Power management unit 4 has its input connected to the power pin of the embedded SIM card and its output connected to Bluetooth unit 1; when the embedded SIM card is inserted into the terminal device, power management unit 4 can supply power to Bluetooth unit 1; when the embedded SIM card is removed, power management unit 4 cannot supply power to Bluetooth unit 1. Bluetooth unit 1 is also used to send the execution result back to the client after receiving the execution result sent by processing unit 3. Bluetooth unit 1 and processing unit 3 are stacked, and Bluetooth unit 1, communication unit 2, processing unit 3, and power management unit 4 are all integrated into a single package.

[0059] In some embodiments, the client, such as an app, includes a BLE SDK (Bluetooth Low Energy Software Development Kit), so the Bluetooth unit 1 in the embedded SIM card can establish a Bluetooth connection with the client. After the Bluetooth unit 1 is connected to the client, it can receive operation commands sent by the client.

[0060] In some embodiments, the communication unit 2 is connected between the Bluetooth unit 1 and the processing unit 3. Thus, after the Bluetooth unit 1 receives an operation instruction sent by the client, the communication unit 2 can transmit the operation instruction so that the processing unit 3 can receive the operation instruction.

[0061] Furthermore, in some embodiments, Bluetooth unit 1 generates weak high-frequency electrical signals. Therefore, without processing these weak signals, they cannot be effectively radiated, resulting in a very short communication range for Bluetooth unit 1, or even preventing communication with external devices such as clients. Therefore, when Bluetooth unit 1 sends information to the outside, the high-frequency electrical signals generated by Bluetooth unit 1 can be converted into electromagnetic waves for radiation into the air, enabling external devices to receive the information sent by Bluetooth unit 1. When Bluetooth unit 1 receives information from external devices, communication unit 2 can also convert the received electromagnetic waves into electrical signals, enabling Bluetooth unit 1 to receive the information sent by external devices. Thus, communication unit 2 also ensures that Bluetooth unit 1 can communicate with external devices.

[0062] In some embodiments, please refer to Figure 2The communication unit 2 includes an antenna module 21 and a transmission module 22. The antenna module 21 is used to ensure that the Bluetooth unit 1 can communicate with external devices; the transmission module 22 is used to transmit operation commands and execution results to realize communication between the Bluetooth unit 1 and the processing unit 3.

[0063] In other words, when the Bluetooth unit 1 sends information to an external device, the antenna module 21 can convert the high-frequency electrical signal generated by the Bluetooth unit 1 into electromagnetic waves, so that the external device can receive the information sent by the Bluetooth unit 1; when the Bluetooth unit 1 receives information sent by an external device, the antenna module 21 can convert the received electromagnetic waves into electrical signals, so that the Bluetooth unit 1 can receive the information sent by the external device.

[0064] In some embodiments, the antenna module 21 may include an LDS (Laser Direct Structuring) antenna, or it may be other antennas, such as a ceramic antenna. This application does not limit this aspect.

[0065] In some embodiments, please refer to Figure 2 The transmission module 22 is connected between the Bluetooth unit 1 and the processing unit 3. Thus, after the Bluetooth unit 1 receives an operation command, the transmission module 22 can send the operation command to the processing unit 3. After the processing unit 3 executes the operation command, the transmission module 22 can send the execution result back to the Bluetooth unit 1.

[0066] Additionally, in some embodiments, please refer to Figure 3 Since the transmission module 22 conforms to the ISO 7816 protocol, the Bluetooth unit 1 and the processing unit 3 can communicate through the ISO 7816 protocol.

[0067] It should be noted that the above description refers to communication between Bluetooth unit 1 and processing unit 3 via the ISO 7816 protocol. Alternatively, in practical applications, Bluetooth unit 1 and processing unit 3 can communicate in other ways, such as via I²C or SPI / UART. This application does not limit this.

[0068] As described above, Bluetooth unit 1 can send operation commands to processing unit 3 via communication unit 2. Upon receiving the operation command, processing unit 3 can execute the command and generate an execution result.

[0069] As an example, the operation instruction can be an eSIM interaction command, which can authenticate the embedded SIM card. After the processing unit 3 receives the eSIM interaction command, it can execute the eSIM interaction command, generate an encrypted token using the security key, and use this token as the execution result.

[0070] It should be noted that the above description is based on the operation instruction being an eSIM interaction command. Alternatively, in applications, the operation instruction can be other commands. This application does not limit this.

[0071] Continuing from the above description, after the processing unit 3 generates the execution result, it can also send the execution result to the Bluetooth unit 1 through the communication unit 2; after the Bluetooth unit 1 receives the execution result, it can send the execution result back to the client for subsequent steps.

[0072] In some embodiments, Bluetooth unit 1 includes a Bluetooth chip die; processing unit 3 is an eUICC cosine, which includes an eSIM chip die. Here, a die refers to a standalone integrated circuit chip that has completed all front-end manufacturing processes but has not yet been packaged.

[0073] In addition, in some embodiments, the eSIM chip bare die is a financial-grade security unit, that is, it is a chip core that meets financial security certification standards and can meet the usage requirements of highly sensitive scenarios (such as payment and identity authentication).

[0074] In some embodiments, the embedded SIM card may further include a power management unit 4. The input terminal of the power management unit 4 is connected to the power pin of the embedded SIM card, and its output terminal is connected to the Bluetooth unit 1. Therefore, when the embedded SIM card is inserted into a terminal device, the terminal device can supply power to the embedded SIM card through the power pin. With power on the power pin, the power management unit 4 is also powered, thus supplying power to the Bluetooth unit 1. When the embedded SIM card is removed, the terminal device cannot supply power to the embedded SIM card. Without power on the power pin, the power management unit 4 is also powerless and cannot supply power to the Bluetooth unit 1. Thus, when the Bluetooth unit 1 is not needed, the power consumption is zero; that is, the power management unit 4 achieves the effect of "powering on when the card is inserted and powering off when the card is removed" in its power management of the Bluetooth unit 1.

[0075] In some embodiments, please refer to Figure 4 The power management unit 4 includes a voltage regulation module; the voltage regulation module is used to adjust the voltage corresponding to the power supply pin to the required voltage of the Bluetooth unit 1. For example, please refer to... Figure 4The voltage regulation module may include an LDO (Low Dropout Regulator). The enable terminal of the LDO is connected to the power supply pin. The LDO can convert the voltage of the power supply pin into a stable voltage required for the operation of Bluetooth unit 1, and can immediately shut down Bluetooth unit 1 when the power supply pin is de-energized.

[0076] It should be noted that the above description is based on a voltage regulation module including an LDO. Alternatively, in applications, the voltage regulation module may also include other components, such as a BUCK element. This application does not limit this aspect.

[0077] In some embodiments, the embedded SIM card also has a reset pin. The terminal device can notify the embedded SIM card to reset by pulling the reset pin low. That is, when the embedded SIM card is removed, the reset pin will momentarily go low before the power pin is powered off. Once the reset pin is pulled low, the processing unit 3 will quickly complete the operation that is currently in progress and save the key data to non-volatile memory to prevent data corruption or loss.

[0078] In some embodiments, the processing unit 3 is powered by a separate LDO.

[0079] In some embodiments, the Bluetooth unit 1 and the processing unit 3 are stacked, and the Bluetooth unit 1, the communication unit 2, the processing unit 3, and the power management unit 4 are all integrated into a single package. That is, by integrating the Bluetooth unit 1, the communication unit 2, the processing unit 3, and the power management unit 4 into this single package, the size of the embedded SIM card can be reduced.

[0080] In some embodiments, the Bluetooth chip die is stacked on top of the eSIM chip die, thereby reducing the area of ​​the embedded SIM card.

[0081] It should be noted that the above description assumes that the Bluetooth chip die is stacked on top of the eSIM chip die. Alternatively, in applications, the eSIM chip logic can be stacked on top of the Bluetooth chip die. This application does not limit this aspect.

[0082] In some embodiments, the single package is a system-in-package (SIP). The package shape of the single package meets any one of the following standards: 4FF (4th Form Factor) Nano-SIM card standard, DFN8 (Dual Flat No-lead package with 8 leads / terminals) standard, or WLCSP (Wafer-Level Chip Scale Package) standard. That is, this single package integrates Bluetooth unit 1, communication unit 2, processing unit 3, and power management unit 4 through SIP technology, forming a fully functional microsystem. Furthermore, the external physical size and shape of this embedded SIM card with this single package can be completely consistent with the smallest Nano-SIM card, or the size of a DFN8 package, or the size of a WLCSP package.

[0083] With its single package shape conforming to the 4FF Nano-SIM card standard, this embedded SIM card can be installed in a standard mobile phone SIM card slot. Thus, by inserting this embedded SIM card into some mobile phones or IoT terminals, these devices can possess full LPA / IPA functionality without modification.

[0084] If the package shape of this single package meets the DFN8 or WLCSP packaging standard, the embedded SIM card can be installed in some IoT terminals or other devices. Thus, by installing this embedded SIM card in these devices, they can acquire full LPA / IPA functionality without modification.

[0085] In some embodiments, the shape of the single package can meet the DFN8 5×6mm package standard.

[0086] In addition, in some embodiments, the shape of the single package can also meet the WLCSP 2.5×2.7mm package standard.

[0087] It should be noted that the above description assumes that the package shape of a single package meets any one of the 4FF Nano-SIM card standard, DFN8 packaging standard, or WLCSP packaging standard. Alternatively, in application, the shape of the single package may also meet other standards, thus allowing the embedded SIM card to have other sizes. In other words, the embodiments of this application do not limit the shape and size of the single package.

[0088] The embedded SIM card in this embodiment integrates a Bluetooth unit, a communication unit, a processing unit, and a power management unit into a single package. This allows the embedded SIM card to communicate with external devices such as clients, enabling terminal devices equipped with the embedded SIM card to have complete LPA / IPA functionality without modification. This facilitates cost reduction and simplifies the promotion of eSIM services in mobile phones and IoT terminals by operators or equipment manufacturers. Furthermore, the stacked arrangement of the Bluetooth unit and processing unit reduces the area of ​​the embedded SIM card. Additionally, the power management unit manages the Bluetooth unit, ensuring zero power consumption when the Bluetooth unit is not in use. Moreover, by system-level packaging a single package, a fully functional microsystem is formed. The package shape of this single package meets any one of the 4FF Nano-SIM card standard, DFN8 packaging standard, or WLCSP packaging standard, allowing the embedded SIM card to be installed in the card slots of different devices, thus enabling these different devices to have complete LPA / IPA functionality without modification. Therefore, the embedded SIM card in this embodiment can solve the problems of large size, high power consumption, external antenna, and difficulty in adapting to existing devices in the existing eSIM, and can be widely used in IoT terminals, wearable devices, vehicle networking, existing mobile phones and other scenarios.

[0089] Please refer to Figure 5 , Figure 5 This application provides a communication system, which includes a client 501, a server 502, and a terminal device 503; the terminal device 503 is equipped with the aforementioned embedded SIM card.

[0090] In this system, client 501 is connected to both server 502 and terminal device 503. Client 501 generates operation commands and sends them to terminal device 503. Terminal device 503 executes the operation commands via an embedded SIM card and returns the execution results to client 501. Client 501 also sends the execution results to server 502. Server 502 determines whether the operation is allowed based on the execution results and sends a data packet to client 501 if the operation is allowed.

[0091] As an example, suppose the terminal device 503 with the embedded SIM card installed wants to perform a remote profile download. The operation command generated by the client 501 can be an eSIM interaction command to authenticate the embedded SIM card. After the terminal device 503 receives the eSIM interaction command through the embedded SIM card, it can also execute the eSIM interaction command through the embedded SIM card, generate an encrypted token using the security key, and use this token as the execution result. The client 501 then sends the token back to the client 501. After receiving the token, the client 501 forwards it to the server 502.

[0092] Then, server 502 can determine whether terminal device 503 has download permission based on the token. If the token indicates that terminal device 503 does not have download permission, it will not send a Profile packet to client 501; if the token indicates that terminal device 503 has download permission, it will send a Profile packet to client 501.

[0093] In some embodiments, after the server 502 sends a data packet to the client 501, the client 501 is further configured to transmit the data packet to the terminal device 503. The terminal device 503 is further configured to process the data packet through the embedded SIM card so that the terminal device 503 can perform corresponding functions.

[0094] Continuing with the example above, after the server 502 sends the Profile packet to the client 501, the client 501 can send the Profile packet to the terminal device 503 so that the embedded SIM card in the terminal device 503 can receive the Profile packet and install it through its own processing unit, thereby enabling the terminal device 503 to perform the corresponding functions.

[0095] It should be noted that the above example illustrates remote profile downloading. In actual applications, profiles can be enabled, disabled, deleted, or subjected to other operations. This application does not limit these operations.

[0096] In some embodiments, client 501 may establish a Bluetooth connection with the Bluetooth unit in the embedded SIM card, thereby enabling client 501 to communicate with terminal device 503 which has the embedded SIM card installed.

[0097] Therefore, the communication process of the above communication system conforms to the GSMA SGP.21 / 22 or GSMA SGP.31 / 32 specifications, and the client 501 implements the complete LPA / IPA function. The Bluetooth unit of the embedded SIM chip installed in the terminal device 503 acts as a "Bluetooth pipe" and can communicate with the client 501. Therefore, the terminal device 503 does not need to implement the complete LPA / IPA function.

[0098] In some embodiments, the client 501 can be an eSIM APP, which can be installed on electronic devices such as mobile phones and computers.

[0099] In some embodiments, the server 502 includes SM-DP+ and an eSIM platform. Before the client 501 sends a data packet to the terminal device 503, it can also read the EID (eSIM Identifier) ​​of the embedded SIM card via the Bluetooth unit and verify whether the EID is recorded in the eSIM platform. If the EID is recorded in the eSIM platform, it means that the terminal device 503 with the embedded SIM card installed is allowed to download the data packet, and then the client 501 can send the data packet to the terminal device 503. Otherwise, the data packet is not sent to the terminal device 503.

[0100] In addition, in some embodiments, before the client 501 sends a data packet to the terminal device 503, the client 501 may also obtain the location information of the terminal device 503 to ensure that the terminal device 503 can only download data packets that are allowed to be downloaded in the current area through the embedded SIM card.

[0101] This application embodiment solves the problems of large size, high power consumption, external antenna, and difficulty in adapting to existing devices by installing the above-mentioned embedded SIM card in the terminal device. It can be widely used in IoT terminals, wearable devices, vehicle networking, existing mobile phones and other scenarios, making it easier for operators or equipment manufacturers to promote eSIM services.

[0102] Figure 6 This is a flowchart illustrating a communication method provided in an embodiment of this application, which is applied to the aforementioned embedded SIM card. Please refer to... Figure 6 The method includes the following steps:

[0103] Step 601: In response to the connection request, establish a connection with the client and receive operation instructions sent by the client.

[0104] Step 602: Execute the operation instruction and send the execution result back to the client so that the server can determine whether the operation is allowed.

[0105] Step 603: Receive the data packet sent by the client so that the terminal device with the embedded SIM card can perform the corresponding functions.

[0106] It should be noted that the detailed process of steps 601 to 603 above has been described in detail in the above text and will not be repeated here. Please refer to the relevant content above.

[0107] This application embodiment solves the problems of large size, high power consumption, external antenna, and difficulty in adapting to existing devices by installing the above-mentioned embedded SIM card in the terminal device. It can be widely used in IoT terminals, wearable devices, vehicle networking, existing mobile phones and other scenarios, making it easier for operators or equipment manufacturers to promote eSIM services.

[0108] Those skilled in the art will understand that all or part of the functions of the various methods in the above embodiments can be implemented by hardware or by computer programs. When all or part of the functions in the above embodiments are implemented by computer programs, the program can be stored in a computer-readable storage medium, which may include: read-only memory, random access memory, disk, optical disk, hard disk, etc., and the program is executed by a computer to achieve the above functions. For example, the program can be stored in the memory of a device, and when the program in the memory is executed by the processor, all or part of the above functions can be achieved. In addition, when all or part of the functions in the above embodiments are implemented by computer programs, the program can also be stored in a server, another computer, disk, optical disk, flash drive, or external hard drive, etc., and can be downloaded or copied to the memory of a local device, or the system of the local device can be updated. When the program in the memory is executed by the processor, all or part of the functions in the above embodiments can be achieved.

[0109] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. An embedded SIM card, characterized in that, include: A Bluetooth unit is used to connect to a client and receive operation commands sent by the client; A communication unit is used to transmit the operation commands and to ensure that the Bluetooth unit communicates with external devices; The processing unit is used to execute the operation instructions and send the execution results to the Bluetooth unit through the communication unit; The power management unit has its input terminal connected to the power pin of the embedded SIM card and its output terminal connected to the Bluetooth unit. When the embedded SIM card is inserted into the terminal device, the power management unit can supply power to the Bluetooth unit; when the embedded SIM card is removed, the power management unit cannot supply power to the Bluetooth unit. The Bluetooth unit is also used to send the execution result back to the client after receiving the execution result sent by the processing unit; The Bluetooth unit and the processing unit are stacked together, and the Bluetooth unit, the communication unit, the processing unit and the power management unit are all integrated into a single package. The Bluetooth unit includes a Bluetooth chip die; the processing unit includes an eSIM chip die, and the Bluetooth chip die is stacked on top of the eSIM chip die.

2. The embedded SIM card as described in claim 1, characterized in that, The single package is a system-level package; the package shape of the single package meets any one of the 4FF Nano-SIM card standard, DFN8 package standard or WLCSP package standard.

3. The embedded SIM card as described in claim 1, characterized in that, The communication unit includes: An antenna module is used to ensure that the Bluetooth unit can communicate with external devices; The transmission module is used to transmit the operation instructions and the execution results to realize communication between the Bluetooth unit and the processing unit.

4. The embedded SIM card as described in claim 1, characterized in that, The power management unit includes: A voltage regulation module is used to adjust the voltage corresponding to the power supply pin to the required voltage of the Bluetooth unit.

5. A communication system, characterized in that, include: A client, a server, and a terminal device; the terminal device is equipped with an embedded SIM card as described in any one of claims 1-4; The client is connected to both the server and the terminal device. The client is used to generate operation instructions and send the operation instructions to the terminal device. The terminal device is used to execute the operation command through the embedded SIM card and to feed back the execution result of the operation command to the client; The client is also used to send the execution result to the server; The server is used to determine whether the operation is allowed based on the execution result, and when the operation is allowed, it sends the corresponding data packet to the client.

6. The communication system as described in claim 5, characterized in that, After the server sends the data packet to the client, the client is also used to transmit the data packet to the terminal device; The terminal device is also used to process the data packets through the embedded SIM card, so that the terminal device can perform corresponding functions.

7. A communication method, characterized in that, Applied to an embedded SIM card as described in any one of claims 1-4, the method comprises: In response to a connection request, a connection is established with the client, and operation instructions are received from the client; The server executes the operation instruction and sends the execution result back to the client so that the server can determine whether the operation is allowed. The terminal device with the embedded SIM card installed receives data packets sent by the client to enable the terminal device to perform the corresponding functions.

8. A computer-readable storage medium, characterized in that, The medium stores a computer program that can be executed by a processor to implement the method as described in claim 7.

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