CN218998085U

CN218998085U - ESIM communication bus structure and terminal

Info

Publication number: CN218998085U
Application number: CN202222266359.6U
Authority: CN
Inventors: 李嘉健; 师璐; 郑海
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-05-09
Anticipated expiration: 2032-08-26

Abstract

The utility model relates to the technical field of terminals, in particular to an ESIM communication bus structure and a terminal. Wherein, this ESIM communication bus structure includes: the system comprises a central processing unit, a micro control unit and an ESIM unit; the central processing unit is connected with the micro-control unit and is used for outputting an access instruction to the micro-control unit; the micro control unit is connected with the ESIM unit and is used for analyzing the access instruction to obtain the address information corresponding to the access instruction, performing read operation on the ESIM unit corresponding to the address information and transmitting the data input by the ESIM unit corresponding to the address information back to the central processing unit. The utility model adopting the scheme can improve the convenience of the terminal in use.

Description

ESIM communication bus structure and terminal

Technical Field

The utility model relates to the technical field of terminals, in particular to an ESIM communication bus structure and a terminal.

Background

With the development of science and technology, the terminal has become an indispensable tool in people's daily life. The user may be connected to the global system for mobile communications (Global System for Mobile Communications, GSM) network, for example, by means of a subscriber identity (Subscriber Identification Module, SIM) card and/or an Electronic SIM (ESIM) card provided in the terminal. In the related art, since an ESIM chip in a terminal needs to share an interface of a central processing unit (central processing unit, CPU) with a SIM card, the SIM card and the ESIM chip sharing the CPU interface cannot be standby at the same time, so that the terminal cannot realize a multi-card multi-standby function, and convenience in use of the terminal is low.

Disclosure of Invention

The utility model provides an ESIM communication bus structure and a terminal, and mainly aims to improve the convenience of the terminal in use.

According to an aspect of the present utility model, there is provided an ESIM communication bus structure comprising: the system comprises a central processing unit, a micro control unit and an ESIM unit; wherein,,

the central processing unit is connected with the micro-control unit and is used for outputting an access instruction to the micro-control unit;

the micro control unit is connected with the ESIM unit and is used for analyzing the access instruction to obtain address information corresponding to the access instruction, performing read operation on the ESIM unit corresponding to the address information and transmitting data input by the ESIM unit corresponding to the address information back to the central processing unit.

Optionally, in an embodiment of the present utility model, the central processing unit is connected to the micro control unit through an I2C interface.

Optionally, in an embodiment of the present utility model, the number of the ESIM units is not less than 2, and the micro control unit is provided with a first communication interface, where the number of the first communication interfaces is not less than the number of the ESIM units, and the ESIM units are connected with the first communication interfaces in a one-to-one correspondence manner.

Optionally, in an embodiment of the present utility model, the first communication interface is a 7816 interface.

Optionally, in one embodiment of the present utility model, further includes: a SIM card holder; wherein,,

the SIM card seat is connected with the central processing unit and is used for realizing data transmission between the SIM card and the central processing unit.

Optionally, in an embodiment of the present utility model, the number of the SIM card holders is not less than 2, and the central processing unit is provided with a second communication interface, where the number of the second communication interfaces is not less than the number of the SIM card holders, and the SIM card holders are connected with the second communication interfaces in a one-to-one correspondence manner.

Optionally, in an embodiment of the present utility model, the second communication interface is a 7816 interface.

Optionally, in one embodiment of the present utility model, the number of the SIM card holders is 2.

Optionally, in an embodiment of the present utility model, when the SIM card performs data transmission with the central processing unit, the transmitted signal includes at least one of the following:

a clock signal;

a reset signal;

and inputting and outputting IO signals.

According to another aspect of the present disclosure, there is provided a terminal including: an ESIM communications bus structure as claimed in any one of the preceding aspects.

In summary, in one or more embodiments of the present utility model, an ESIM communication bus structure includes: the system comprises a central processing unit, a micro control unit and an ESIM unit; the central processing unit is connected with the micro-control unit and is used for outputting an access instruction to the micro-control unit; the micro control unit is connected with the ESIM unit and is used for analyzing the access instruction to obtain the address information corresponding to the access instruction, performing read operation on the ESIM unit corresponding to the address information and transmitting the data input by the ESIM unit corresponding to the address information back to the central processing unit. Therefore, the ESIM unit is connected with the central processing unit through the micro control unit, an interface of the central processing unit is not required to be shared with the SIM card, the function of simultaneously standby of the SIM card and the ESIM unit can be realized, and the convenience of the terminal in use can be improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic diagram of an exemplary ESIM communication bus architecture provided in accordance with an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a first ESIM communication bus structure according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a second ESIM communication bus structure according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a third ESIM communication bus structure according to an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. On the contrary, the embodiments of the utility model include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.

With the development of scientific technology, terminal technology is mature increasingly, and convenience of production and life of users is improved. In the terminal application scenario, the user may be connected to a global system for mobile communications (Global System for Mobile Communications, GSM) network, for example, through a subscriber identity (Subscriber Identification Module, SIM) card and/or an electronic SIM (eSIM) card provided in the terminal.

In some embodiments, FIG. 1 is a schematic diagram of an exemplary ESIM communication bus structure provided in accordance with an embodiment of the present utility model. As shown in fig. 1, the central processing unit (central processing unit, CPU) in the terminal has only two 7816 interfaces, the 7816 interface 1 in the CPU is directly connected to the first SIM card in the SIM card holder, and the 7816 interface 2 in the CPU needs to be connected to the second SIM card and the ESIM chip through a multiple-in-multiple data selector (MUX) switch, respectively.

It is easy to understand that the ESIM chip in the terminal shares the 7816 interface 2 in the CPU with the second SIM card through a multi-way alternative MUX switch. Therefore, only one of the ESIM chip and the second SIM card can be selected to perform data transmission with the CPU, namely only one of the ESIM chip and the second SIM card can be selected to perform standby, the function of simultaneously standby the two SIM cards and the ESIM chip cannot be realized, and only the function of three cards and two standby can be realized, so that the convenience of the terminal in use is not high.

The present utility model will be described in detail with reference to specific examples.

Fig. 2 is a schematic structural diagram of a first ESIM communication bus structure according to an embodiment of the present utility model.

As shown in fig. 2, the ESIM communication bus structure includes: the system comprises a central processing unit, a micro control unit and an ESIM unit; wherein,,

the micro control unit is connected with the ESIM unit and is used for analyzing the access instruction to obtain the address information corresponding to the access instruction, performing read operation on the ESIM unit corresponding to the address information and transmitting the data input by the ESIM unit corresponding to the address information back to the central processing unit.

According to some embodiments, the central processing unit refers to an operation and control core of the device, and is a final execution unit for information processing and program running. The processing unit is not particularly limited to a certain fixed unit. For example, the processing unit may be a CPU.

According to some embodiments, the micro control unit (Microcontroller Unit, MCU) is also called a single chip microcomputer (Single Chip Microcomputer) or a single chip microcomputer, and is a chip-level computer formed by properly reducing the frequency and specification of a central processing unit, and integrating a memory (memory), a counter (Timer), a universal serial bus (Universal Serial Bus, USB), an analog-to-digital conversion (analog to digital converter, a/D), a universal asynchronous receiver/Transmitter (Universal Asynchronous Receiver/Transmitter, UART), a programmable logic controller (Programmable Logic Controller, PLC), a direct memory access (Direct Memory Access, DMA), and even a liquid crystal display (Liquid Crystal Display, LCD) driving circuit on a single chip.

In some embodiments, the micro-control unit is not specific to a particular fixed unit. For example, the micro-control unit may change when the corresponding circuit of the micro-control unit changes. When the chip model corresponding to the micro control unit changes, the micro control unit can also change.

According to some embodiments, the eSIM unit refers to an electronic SIM card, i.e., the SIM card is embedded directly on the device chip, rather than being added to the device as a separate removable component. The eSIM unit is not specific to a particular fixed unit. For example, an eSIM unit may change when the number to which the eSIM unit corresponds changes.

In some embodiments, a SIM card refers to a key in a terminal connected to a global system for mobile communications (Global System for Mobile Communications, GSM) network. GSM can identify GSM subscribers through a SIM card.

According to some embodiments, the access instruction refers to an access instruction corresponding to an ESIM unit sent to the MCU when the central processing unit accesses the ESIM unit. The access instruction is not specific to a fixed instruction. For example, the access instruction may change when the ESIM unit accessed by the central processing unit changes. The access instruction may also change when a modification instruction for the access instruction is obtained.

In some embodiments, when at least one ESIM unit is connected to the micro-control unit, the MCU and/or the central processing unit may assign an independent address to each ESIM unit. For example, ESIM unit A may be assigned address a1, ESIM unit B may be assigned address B1, and ESIM unit C may be assigned address C1.

In some embodiments, the address information refers to information of an address of an ESIM unit corresponding to the access instruction obtained after the MCU analyzes the access instruction. The address information is not particularly specific to certain fixed information. For example, the address information may change when the access instruction changes. When the address of the ESIM unit corresponding to the access instruction changes, the address information may also change.

For example, after the MCU parses the access instruction a2, the information of the address a1 of the ESIM unit a corresponding to the access instruction a2 may be obtained. After the MCU analyzes the access instruction B2, the information of the address B1 of the ESIM unit B corresponding to the access instruction B2 can be obtained.

According to some embodiments, a read operation refers to an operation that retrieves data from a hard disk, i.e., writes a memory address to an address bus, then places the data on a data bus, and finally reads the data from the data bus. In the embodiment of the utility model, the MCU performs the read operation on the ESIM unit corresponding to the address information, and can read the data of the ESIM unit from the data bus.

In some embodiments, when the MCU reads the data of the ESIM unit, the MCU may transmit the read data back to the central processing unit. The central processing unit may then register the GSM network based on the data.

In summary, in the ESIM communication bus structure provided by the embodiment of the present utility model, by connecting the ESIM unit with the central processing unit through the micro control unit, it is not necessary to share an interface of the central processing unit with the SIM card, a function of simultaneously waiting for the SIM card and the ESIM unit can be implemented, and convenience in use of the terminal can be improved.

Optionally, in an embodiment of the present utility model, the central processing unit is connected to the micro-control unit through an I2C (Inter-Integrated Circuit) interface.

According to some embodiments, an I2C interface refers to an interface employed for data transfer according to an I2C bus. When the central processing unit is connected with the micro-control unit through the I2C interface, the I2C interface in the central processing unit is connected with the I2C interface in the micro-control unit.

It is easy to understand that the central processing unit is connected with the micro control unit through the I2C interface, so that the interface of the central processing unit is not required to be shared with the SIM card, the function of simultaneously standby the SIM card and at least one ESIM unit can be realized, and the convenience of the terminal in use can be improved.

Optionally, in an embodiment of the present utility model, the number of ESIM units is not less than 2, and the micro control unit is provided with a first communication interface, the number of the first communication interfaces is not less than the number of ESIM units, and the ESIM units are connected with the first communication interfaces in a one-to-one correspondence manner.

According to some embodiments, the first communication interface is not specific to a fixed interface. For example, the first communication interface may be a 7816 interface.

In some embodiments, the 7816 interface is a half duplex serial communication interface, using a single signal line for data 5 transmission, which can be read or written at the same time. When the micro control unit is connected with the ESIM unit through 7816 interface, the micro control unit

The 7816 interfaces in the ESIM units are connected with the 7816 interfaces in the ESIM units, and one ESIM unit corresponds to the 7816 interface in one micro-control unit.

It will be readily appreciated that the micro-control unit is connected to the ESIM unit via a first communication interface, thereby enabling micro-control

The unit is provided with a plurality of ESIM units, so that the function of simultaneously standby the ESIM units can be realized, and the convenience of the terminal in using 0 can be improved.

Optionally, in an embodiment of the present utility model, fig. 3 is a schematic structural diagram of a second ESIM communication bus structure according to an embodiment of the present utility model. As shown in fig. 3, the ESIM communication bus structure further includes: a SIM card holder;

wherein,,

5 according to some embodiments, a SIM card holder refers to a holder for placing at least one SIM card. The SIM card holder is not

In particular to a certain fixed clamping seat. For example, the SIM holder may change when the corresponding structure of the SIM holder changes.

When the placed SIM card changes, the SIM card seat can also change.

In some embodiments, FIG. 4 is a junction of a second ESIM communication bus structure according to an embodiment of the utility model

Schematic diagram. As shown in fig. 4, the number of SIM card holders is not less than 2, and the central processing unit is provided with a second communication interface 0, and the number of second communication interfaces is not less than the number of SIM card holders, and the SIM card holders are connected with the second communication interfaces in a one-to-one correspondence.

In some embodiments, the second communication interface is not specific to a fixed interface. For example, the second communication interface may be a 7816 interface.

For example, when the CPU includes only two 7816 interfaces, the number of SIM cards may be 2, and the two 7816 interfaces may be connected to one SIM card respectively.

5 it will be appreciated that there may be only 2 CPUs for some types due to limited resources of the communication interface on the CPU

In the embodiment of the utility model, the SIM card seat is connected to the communication interface of the CPU, the ESIM is connected to the CPU through the micro-control unit, and the micro-control unit can be connected with the CPU through the I2C interface and perform communication transmission, so that the simultaneous online work of the SIM card and the ESIM card can be realized.

According to some embodiments, when the SIM card performs data transmission with the central processing unit, the transmitted signal includes at least one of the following 0:

a Clock (CLK) signal;

reset (RST) signal;

an Input Output (IO) signal.

In some embodiments, as shown in fig. 4, the CPU may input CLK signal, 5RST signal, and IO signal to the first SIM card and the second SIM card. The SIM card may input an interrupt signal and a card insertion signal usim_present to the CPU.

It is easy to understand that the plurality of SIM cards in the SIM card holder are connected with the central processing unit through the second communication interface, so as to implement a dual-card dual-standby function. Meanwhile, the multi-SIM card and multi-standby functions of the multi-SIM card and multi-ESIM unit can be realized by matching with at least one ESIM unit connected with the central processing unit through the micro control unit, and the convenience of the terminal in use can be improved.

In summary, the ESIM communication bus structure provided by the embodiment of the utility model comprises: the system comprises a central processing unit, a micro control unit and an ESIM unit; the central processing unit is connected with the micro-control unit and is used for outputting an access instruction to the micro-control unit; the micro control unit is connected with the ESIM unit and is used for analyzing the access instruction to obtain the address information corresponding to the access instruction, performing read operation on the ESIM unit corresponding to the address information and transmitting the data input by the ESIM unit corresponding to the address information back to the central processing unit. Therefore, the ESIM unit is connected with the central processing unit through the micro control unit, an interface of the central processing unit is not required to be shared with the SIM card, the function of simultaneously standby of the SIM card and the ESIM unit can be realized, and the convenience of the terminal in use can be improved.

The utility model further provides a terminal according to the embodiment of the utility model.

Specifically, the terminal includes: ESIM communication bus structures as described in the embodiments of FIGS. 1-4 above.

According to some embodiments, the terminal includes, but is not limited to: wearable devices, handheld devices, personal computers, tablet computers, vehicle-mounted devices, smart phones, computing devices, or other processing devices connected to a wireless modem, etc. Terminals may be called different names in different networks, for example: a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent or user equipment, a cellular telephone, a cordless telephone, a personal digital assistant (personal digital assistant, PDA), a fifth Generation mobile communication technology (5th Generation Mobile Communication Technology,5G) network, a fourth Generation mobile communication technology (the 4th Generation mobile communication technology,4G) network, a third Generation mobile communication technology (3 rd-Generation, 3G) network, or a terminal in a future evolution network, etc.

In some embodiments, the terminal may be applied to an internet of things (Internet of Things, IOT) application scenario that requires a SIM card.

In summary, the terminal provided by the embodiment of the utility model comprises an ESIM communication bus structure. Therefore, the ESIM unit is connected with the central processing unit through the micro control unit, an interface of the central processing unit is not required to be shared with the SIM card, the function of simultaneously standby of the SIM card and the ESIM unit can be realized, and the convenience of the terminal in use can be improved.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms may be directed to different embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. An electronic subscriber identity module ESIM communication bus structure comprising: the system comprises a central processing unit, a micro control unit and an ESIM unit; wherein,,

2. The ESIM communication bus structure of claim 1, wherein the central processing unit is connected to the micro control unit via an I2C interface.

3. The ESIM communication bus structure according to claim 1, wherein the number of the ESIM units is not less than 2, the micro control unit is provided with a first communication interface, the number of the first communication interfaces is not less than the number of the ESIM units, and the ESIM units are connected with the first communication interfaces in a one-to-one correspondence.

4. An ESIM communication bus structure according to claim 3, wherein said first communication interface is a 7816 interface.

5. An ESIM communications bus structure according to claim 1, further comprising: a SIM card holder; wherein,,

6. The ESIM communication bus structure according to claim 5, wherein the number of the SIM card holders is not less than 2, the central processing unit is provided with second communication interfaces, the number of the second communication interfaces is not less than the number of the SIM card holders, and the SIM card holders are connected with the second communication interfaces in a one-to-one correspondence.

7. An ESIM communication bus structure according to claim 6, wherein said second communication interface is a 7816 interface.

8. The ESIM communication bus structure of claim 6, wherein the number of SIM card holders is 2.

9. The ESIM communication bus structure according to claim 5, wherein the transmitted signal includes at least one of the following:

a clock signal;

a reset signal;

and inputting and outputting IO signals.

10. A terminal, comprising: an ESIM communications bus structure according to any one of claims 1 to 9.