WO2015085884A1 - 一种集成有sim卡的通信芯片 - Google Patents

一种集成有sim卡的通信芯片 Download PDF

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Publication number
WO2015085884A1
WO2015085884A1 PCT/CN2014/092938 CN2014092938W WO2015085884A1 WO 2015085884 A1 WO2015085884 A1 WO 2015085884A1 CN 2014092938 W CN2014092938 W CN 2014092938W WO 2015085884 A1 WO2015085884 A1 WO 2015085884A1
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Prior art keywords
interface
cos
unit
personalized data
communication chip
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PCT/CN2014/092938
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English (en)
French (fr)
Inventor
任晓东
吕广娜
王红梅
刘越
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中国移动通信集团公司
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Application filed by 中国移动通信集团公司 filed Critical 中国移动通信集团公司
Priority to KR1020167002484A priority Critical patent/KR101783564B1/ko
Priority to EP14869640.4A priority patent/EP3082375B1/en
Priority to US15/023,997 priority patent/US9876520B2/en
Publication of WO2015085884A1 publication Critical patent/WO2015085884A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3816—Mechanical arrangements for accommodating identification devices, e.g. cards or chips; with connectors for programming identification devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/08—Access security
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/30—Security of mobile devices; Security of mobile applications
    • H04W12/35—Protecting application or service provisioning, e.g. securing SIM application provisioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0277—Details of the structure or mounting of specific components for a printed circuit board assembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/14—Details of telephonic subscriber devices including a card reading device

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a communication chip integrated with a SIM card.
  • FIG. 1 it is a schematic structural diagram of a terminal device, which includes a communication chip and a SIM card, and the communication chip and the SIM card communicate through an ISO7816 (Intelligent Card International Standard) interface, thereby completing GSM (Global System for Mobile Communications). , Global System for Mobile Communications) SIM-related functions required for networks and/or GPRS (General Packet Radio Service) networks.
  • GSM Global System for Mobile Communications
  • GPRS General Packet Radio Service
  • the SIM card occupies a certain area on the PCB (Printed Circuit Board) of the terminal device, and the occupied area may be relatively large; the SIM card is an independent hardware entity, which may cause poor contact and damage to the metal during the plugging and unplugging process. Faults such as chips reduce reliability and security.
  • PCB Print Circuit Board
  • the embodiment of the present disclosure provides a communication chip integrated with a SIM card to prevent the SIM card from occupying a certain area on the PCB of the terminal device and to prevent the SIM card as an independent hardware entity.
  • embodiments of the present disclosure provide a communication chip integrated with a Subscriber Identity Module (SIM) card, the communication chip including: a baseband central processing unit (CPU), a first protocol interface, a selection switch, and a SIMZone unit
  • the baseband CPU is connected to the first protocol interface;
  • the selection switch is respectively connected to the SIMZone unit and the first protocol interface, and the selection switch is also connected to the IF1 interface; the selection switch and the SIMZone unit are always in a connected state, when the selection switch
  • the SIMZone unit When in communication with the first protocol interface, the SIMZone unit is configured to provide a SIM card function for the baseband CPU; when the selection switch is in a connected state with the IF1 interface, the SIMZone The unit is configured to receive data written by the IF1 interface.
  • the selection switch when the IF1 interface is connected to a device of the specified type, the selection switch is in a connected state with the IF1 interface, and the selection switch is in an unconnected state with the first protocol interface;
  • the selection switch When the IF1 interface is not connected to the device of the specified type, the selection switch is in a connected state with the first protocol interface, and the selection switch is in an unconnected state with the IF1 interface.
  • the specified type of device is specifically a chip operating system (COS) programmer or a personalized data writing device.
  • COS chip operating system
  • the SIMZone unit includes: a random access memory (RAM), a COS storage unit, a micro control unit (MCU), a second protocol interface, and a personalized data storage unit;
  • the RAM is connected to the MCU, and the COS storage unit and the MCU Connected, the second protocol interface is connected to the MCU, the personalized data storage unit is connected to the MCU, and the SIMZone unit is connected to the selection switch through the second protocol interface;
  • the RAM is used for Preserving temporary data required for the COS to operate in the MCU;
  • the COS storage unit for storing program code of the COS; the MCU for running the COS;
  • the second protocol interface for providing communication functions and programming functions
  • the communication function provides a communication function between the SIMZone unit and the baseband CPU, the programming function provides an IF1 interface to perform COS programming on the COS storage unit, and personalizes data writing to the personalized data storage unit; the personalized data storage Unit for storing personalized data.
  • the personalized data includes one or any combination of the following: an International Mobile Subscriber Identity (IMSI), an Integrated Circuit Card Identification Number (ICCID), a Personal Identification Number (PIN1, PIN2), and a PIN code unlocking.
  • IMSI International Mobile Subscriber Identity
  • ICCID Integrated Circuit Card Identification Number
  • PIN1, PIN2 Personal Identification Number
  • PIN code unlocking PIN code unlocking.
  • PUK1, PUK2 Key Identification
  • KI SMS Center Number
  • the personalized data includes one or any combination of the following: IMSI, ICCID, PIN1, PIN2, PUK1, PUK2, Key (K), Carrier Key (OPC), SMSP.
  • the first protocol interface is specifically a protocol interface based on the smart card international standard ISO7816;
  • the second protocol interface is specifically a protocol interface based on the smart card international standard ISO7816.
  • the IF1 interface is specifically a COS programming interface or a personalized data writing interface; when the IF1 interface is a COS programming interface, the second protocol interface is connected to the COS programmer through the COS programming interface, The COS programmer performs COS programming on the COS storage unit; when the IF1 interface is a personalized data writing interface, the second protocol interface is connected to the personalized data writing device through the personalized data writing interface, The personalized data writing device performs personalized data writing to the personalized data storage unit.
  • the hardware circuit components of the IF1 interface specifically include: a power supply (VCC), a ground terminal (GND), a reset (RESET), a program voltage (VPP), a clock (CLK), and a data I/O.
  • VCC power supply
  • GND ground terminal
  • REET reset
  • VPP program voltage
  • CLK clock
  • the communication chip further includes: a digital signal processor (DSP) and/or a communication chip peripheral interface.
  • DSP digital signal processor
  • the embodiment of the present disclosure has at least the following advantages: in the embodiment of the present disclosure, by integrating the SIM card into the communication chip of the terminal device, the occupied area of the SIM card on the PCB of the terminal device is reduced. Avoid the SIM card as an independent hardware entity, avoid the plugging process, improve reliability and security; since the SIM card is integrated in the communication chip, the security is not lower than the traditional SIM card.
  • FIG. 1 is a schematic structural diagram of a terminal device in the prior art
  • FIG. 2 is a schematic structural diagram of a communication chip integrated with a SIM card provided by an embodiment of the present disclosure Figure.
  • the embodiment of the present disclosure provides a communication chip integrated with a SIM card.
  • the communication chip specifically includes: a baseband CPU (Center Process Unit) 21, The first protocol interface 22, the selection switch 23 and the SIMZone unit 24.
  • the SIMZone unit 24 is specifically a subscriber identity module specific area unit 24.
  • the baseband CPU 21 is connected to the first protocol interface 22; the selection switch 23 is connected to the SIMZone unit 24, to the first protocol interface 22, and to the IF1 interface. Pick up.
  • the selection switch 23 and the SIMZone unit 24 are always in a connected state, and the selection switch 23 is in a connected state with the first protocol interface 22 or the IF1 interface.
  • the SIMZone unit 24 is configured to provide a SIM card function to the baseband CPU 21; when the selection switch 23 is in a connected state with the IF1 interface, the SIMZone unit 24 is used to receive data written through the IF1 interface.
  • the first protocol interface 22 is specifically an ISO7816-based protocol interface inside the communication chip.
  • the selection switch 23 and the IF1 interface when the IF1 interface is connected to the specified type of device, the selection switch 23 and the IF1 interface are in a connected state, and the selection switch 23 and the first protocol interface 22 are in a disconnected state; when the IF1 interface is not connected
  • the selection switch 23 and the first protocol interface 22 when the type device is specified, the selection switch 23 and the first protocol interface 22 are in a connected state, and the selection switch 23 and the IF1 interface are in a non-connected state.
  • the specified type of device specifically includes but is not limited to a COS (Chip Operating System) programmer or a personalized data writing device.
  • COS Chip Operating System
  • the selection switch 23 can determine that the VPP state is currently at a high level by determining the VPP (programming voltage) state of the IF1 interface.
  • the other end of the switch 23 is automatically inverted to the IF1 interface, so that the IF1 interface is connected to the SIMZone unit 24; when the IF1 interface of the communication chip is not connected to the COS programmer or the personalized data writing device, the selection switch 23 determines the VPP of the IF1 interface (The programming voltage state can be determined that the VPP state is currently low, and the other end of the selection switch 23 is automatically inverted to the first protocol interface 22, causing the first protocol interface 22 to communicate with the SIMZone unit 24.
  • the communication chip further includes other units 25.
  • the other unit 25 includes, but is not limited to, a DSP (Digital Signal Processing) and/or a communication chip peripheral interface, etc., and the functions of the other units 25 are not described in detail herein.
  • the SIMZone unit 24 specifically includes: a RAM (Ramdom Access Memory) 241, a COS storage unit 242, an MCU (Micro Control Unit) 243, a second protocol interface 244, and personalization. Data storage unit 245.
  • the RAM 241 is connected to the MCU 243
  • the COS storage unit 242 is connected to the MCU 243
  • the second protocol interface 244 is connected to the MCU 243
  • the personalized data storage unit 245 is connected to the MCU 243.
  • the SIMZone unit 24 specifically enters through the second protocol interface 244 and the selection switch 23 Line connection.
  • the RAM 241 is configured to save temporary data required for the COS to operate on the MCU 243.
  • the COS storage unit 242 is configured to save the program code of the COS. MCU 243 for running COS.
  • the second protocol interface 244 is the only interface between the SIMZone unit 24 and the outside for providing communication functions (such as ISO7816 communication functions) and programming functions.
  • the communication function provides a communication function between the SIMZone unit 24 and the baseband CPU 21, the programming function providing an IF1 interface for COS programming of the COS storage unit 242, the programming function also providing personalized data to the personalized data storage unit 245 Write.
  • the personalized data storage unit 245 is configured to store personalized data.
  • the second protocol interface 244 is specifically a protocol interface based on ISO7816.
  • the personalized data specifically includes but is not limited to one or any combination of the following: IMSI (International Mobile Subscriber Identification Number), ICCID (Integrate Circuit Card Identity) ), PIN1 (Personal Identification Number), PIN2, PUK1 (PIN Unblocking Key), PUK2, KI (Key identifier, key identifier), SMSP (SMS center number); in 3G network Personalized data includes, but is not limited to, one or any combination of the following: IMSI, ICCID, PIN1, PIN2, PUK1, PUK2, Key, OPC (operator key), SMSP.
  • the security level of the SIMZone unit 24 can be configured to the same level of security as the current conventional SIM card. Since the personalized data storage unit 245 is not exposed to the outside, the security of the COS and the secure communication function of the second protocol interface 244 ensure the security of the personalized data.
  • the IF1 interface may specifically be a COS programming interface or a personalized data writing interface.
  • the COS programming interface is connected to the COS programmer, that is, the second protocol interface 244 is connected to the COS programmer through the COS programming interface, and the COS programming unit COS is programmed by the COS programmer.
  • the IF1 interface is a personalized data writing interface
  • the personalized data is written to the interface to connect to the personalized data writing device (which may be referred to as a card writer), that is, the second protocol interface 244 connects to the individual through the personalized data writing interface.
  • the data writing device writes the personalized data to the personalized data storage unit 245 by the personalized data writing device.
  • the hardware circuit composition of the IF1 interface specifically includes: VCC (power supply), GND (connected Ground), RESET (reset), VPP (program voltage), CLK (clock), data I/O.
  • the COS storage unit 242 is a one-time programming unit, and the data in the COS storage unit 242 cannot be erased or modified to ensure that the COS is not tampered with. If you need to modify the personalized data in the SIMZone unit 24, you need to use the personalized data writing interface of the IF1 interface to complete the interaction with the COS. The specific process is not described here. It should be noted that in order to ensure the security of the personalized data, the personalized data storage unit 245 can be implemented by using an EEPROM (Electrically Erasable Programmable Read-Only Memory) technology or a FLASH technology.
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • the SIMZone unit 24 since the SIMZone unit 24 is integrated inside the communication chip, the SIMZone unit 24 needs to adopt the same manufacturing process as the baseband CPU 21, the selection switch 23, and the other unit 25, such as a 0.13 micron process, a 65 nm process. Wait. Due to the limitations of the prior art, the design method of the SIMZone unit 24 under different processes is also different. For the RAM 241, the MCU 243, and the second protocol interface 244, the same processes as those of the baseband CPU 21 and other units 25 in the communication chip can be employed. For the COS storage unit 242, it can be implemented by OTP (One Time Programming) logic technology, and is also applicable to different processes.
  • OTP One Time Programming
  • the personalized data storage unit 2445 generally only support of 90 nm, 0.13 micron, etc. supports EEPROM or FLASH. Therefore, when the personalized data storage unit 245 is implemented by EEPROM or FLASH, the entire communication chip can only adopt the corresponding process.
  • the communication chip adopts a process of 65 nm, 55 nm, 40 nm or less, the RAM 241, the MCU 243, and the second protocol interface 244 are implemented by digital technology, the COS storage unit 242 is implemented by the OTPROM technology, and the personalized data storage unit 245 is adopted.
  • MTP logic implementation when the technology advances to embed EEPROM or FLASH in the communication chip, the personalized data storage unit 245 can adopt EEPROM or FLASH. Since the number of erasing and writing of the general MTP can only reach about 10 times, the number of updates of the personalized data is limited; if the personalized data storage unit 245 is implemented by using EEPROM or FLASH, the number of times of erasing can be more than 100,000 times.
  • the baseband CPU 21 needs to write the cell information to the SIMZone unit 24, but since the communication chip integrates the SIMZone unit 24 internally, there is no need to the SIMZone unit 24 Write community letter interest. Based on this, even if the humanized data storage unit 245 is implemented by MTP logic, there is no problem, but the number of updates of the personalized data is limited, and the local write card or the air write card cannot be frequently performed.
  • the communication chip adopts a process of 0.13 micrometer or more
  • the implementation of the personalized data storage unit 245 adopts EEPROM or FLASH, and the number of times of updating the personalized data can reach 100,000 times or more.
  • the security level of the SIMZone unit 24 can be guaranteed to be no lower than that of the conventional SIM card.
  • the COS program code is stored in the COS storage unit 242, it is easy to be decompiled.
  • the COS storage unit 242 can be implemented by hardware logic, that is, the COS program code can be converted into an RTL (register transfer level) and stored in the COS storage unit 242. .
  • the security is not lower than the traditional SIM card, and the occupied area of the SIM card on the PCB of the terminal device is reduced, thereby saving the PCB. Area, avoid SIM card as an independent hardware entity, avoid plugging and unplugging process, improve reliability and security.
  • the COS is implemented by hardware logic in the communication chip and is not easily decompiled.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or the corresponding changes may be located in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.

Abstract

本公开文本公开了一种集成有SIM卡的通信芯片，包括：基带CPU（21）、第一协议接口（22）、选择开关（23）和SIMZone单元；所述基带CPU（21）与第一协议接口（22）连接；所述选择开关（23）分别与SIMZone单元、所述第一协议接口（22）、以及IF1接口连接。所述选择开关（23）与所述SIMZone单元之间始终处于连通状态，当所述选择开关（23）与所述第一协议接口（22）之间处于连通状态时，所述SIMZone单元用于为所述基带CPU（21）提供SIM卡功能；当所述选择开关（23）与所述IF1接口之间处于连通状态时，所述SIMZone单元用于接收通过所述IF1接口写入的数据。在本公开文本实施例中，通过将SIM卡集成在终端设备的通信芯片内，降低SIM卡在终端设备的PCB上的占用面积，避免SIM卡作为独立硬件实体，避免插拔过程，提高可靠性和安全性，安全性不低于传统SIM卡。

Description

一种集成有SIM卡的通信芯片
相关申请的交叉参考
本申请主张在2013年12月13日在中国提交的中国专利申请号No.201310684902.7的优先权，其全部内容通过引用包含于此。
技术领域
本公开文本涉及通信技术领域，尤其是涉及一种集成有SIM卡的通信芯片。
背景技术
现有技术中，SIM(Subscriber Identity Module，用户识别模块)卡通常作为一个独立的硬件实体存在于终端设备内。如图1所示，为终端设备的结构示意图，该终端设备包括通信芯片和SIM卡，通信芯片与SIM卡之间通过ISO7816(智能卡国际标准)接口进行通信，从而完成GSM(Global System for Mobile Communications，全球移动通信系统)网络和/或GPRS(General Packet Radio Service，通用分组无线服务)网络所需要的SIM相关功能。
SIM卡在终端设备的PCB(Printed Circuit Board，印刷电路板)上占用一定的面积，而且占用面积可能会比较大；SIM卡作为独立的硬件实体，在插拔过程中会出现接触不良、损坏金属芯片等故障，降低了可靠性和安全性。
发明内容
(一)要解决的技术问题
本公开文本实施例提供一种集成有SIM卡的通信芯片，以避免SIM卡在终端设备的PCB上占用一定面积，并且避免SIM卡作为独立的硬件实体。
(二)技术方案
为了达到上述目的，本公开文本实施例提供一种集成有用户识别模块(SIM)卡的通信芯片，所述通信芯片包括：基带中央处理器(CPU)、第一协议接口、选择开关和SIMZone单元；所述基带CPU与第一协议接口连接； 所述选择开关分别与所述SIMZone单元、所述第一协议接口连接，所述选择开关还与IF1接口连接；所述选择开关与所述SIMZone单元之间始终处于连通状态，当所述选择开关与所述第一协议接口之间处于连通状态时，所述SIMZone单元用于为所述基带CPU提供SIM卡功能；当所述选择开关与所述IF1接口之间处于连通状态时，所述SIMZone单元用于接收通过所述IF1接口写入的数据。
例如，当所述IF1接口连接指定类型设备时，所述选择开关与所述IF1接口之间处于连通状态，且所述选择开关与所述第一协议接口之间处于未连通状态；当所述IF1接口没有连接指定类型设备时，所述选择开关与所述第一协议接口之间处于连通状态，且所述选择开关与所述IF1接口之间处于未连通状态。
例如，所述指定类型设备具体为芯片操作系统(COS)编程器或者个人化数据写入设备。
例如，所述SIMZone单元包括：随机存储器(RAM)、COS存储单元、微控制单元(MCU)、第二协议接口、个人化数据存储单元；所述RAM与MCU连接，所述COS存储单元与MCU连接，所述第二协议接口与MCU连接，所述个人化数据存储单元与MCU连接，且所述SIMZone单元通过所述第二协议接口与所述选择开关连接；其中：所述RAM，用于保存COS在MCU运行所需的临时数据；所述COS存储单元，用于保存COS的程序代码；所述MCU，用于运行COS；所述第二协议接口，用于提供通信功能和编程功能，通信功能提供所述SIMZone单元与所述基带CPU之间的通信功能，编程功能提供IF1接口对COS存储单元进行COS编程，对个人化数据存储单元进行个人化数据写入；所述个人化数据存储单元，用于存储个人化数据。
例如，在2G网络中，所述个人化数据包括以下之一或者任意组合：国际移动用户识别码(IMSI)、集成电路卡识别码(ICCID)、个人识别密码(PIN1、PIN2)、PIN码解锁密码(PUK1、PUK2)、密钥标识(KI)、短信中心号码(SMSP)：
在3G网络中，所述个人化数据包括以下之一或者任意组合：IMSI、ICCID、PIN1、PIN2、PUK1、PUK2、密钥(K)、运营商密钥(OPC)、SMSP。
例如，所述第一协议接口具体为基于智能卡国际标准ISO7816的协议接口；
所述第二协议接口具体为基于智能卡国际标准ISO7816的协议接口。
例如，所述IF1接口具体为COS编程接口或个人化数据写入接口；在所述IF1接口为COS编程接口时，所述第二协议接口通过所述COS编程接口连接COS编程器，由所述COS编程器对COS存储单元进行COS编程；在所述IF1接口为个人化数据写入接口时，所述第二协议接口通过所述个人化数据写入接口连接个人化数据写入设备，由所述个人化数据写入设备对个人化数据存储单元进行个人化数据写入。
例如，所述IF1接口的硬件线路组成具体包括：电源(VCC)、接地端(GND)、复位(RESET)、编程电压(VPP)、时钟(CLK)、数据I/O。
例如，所述通信芯片还包括：数字信号处理器(DSP)和/或通信芯片外围接口。
(三)有益效果
本公开文本具体实施例所提供的上述技术方案中的至少一个具有以下有益效果：
与现有技术相比，本公开文本实施例至少具有以下优点：本公开文本实施例中，通过将SIM卡集成在终端设备的通信芯片内，降低SIM卡在终端设备的PCB上的占用面积，避免SIM卡作为独立硬件实体，避免插拔过程，提高可靠性和安全性；由于SIM卡集成在通信芯片内，因此安全性不低于传统SIM卡。
附图说明
为了更清楚地说明本公开文本实施例或现有技术中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开文本的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是现有技术中的终端设备的结构示意图；
图2是本公开文本实施例提供的一种集成有SIM卡的通信芯片结构示意 图。
具体实施方式
下面结合附图和实施例，对本公开文本的具体实施方式做进一步描述。以下实施例仅用于说明本公开文本，但不用来限制本公开文本的范围。
为使本公开文本实施例的目的、技术方案和优点更加清楚，下面将结合本公开文本实施例的附图，对本公开文本实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开文本的一部分实施例，而不是全部的实施例。基于所描述的本公开文本的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开文本保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开文本所属领域内具有一般技能的人士所理解的通常意义。本公开文本的说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”或者“一”等类似词语也不表示数量限制，而是表示存在至少一个。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也相应地改变。
下面将结合本公开文本中的附图，对本公开文本中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开文本的一部分实施例，而不是全部的实施例。基于本公开文本中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
针对现有技术中存在的问题，本公开文本实施例提供一种集成有SIM卡的通信芯片，如图2所示，该通信芯片具体包括：基带CPU(Center Process Unit，中央处理器)21、第一协议接口22、选择开关23和SIMZone单元24。其中，该SIMZone单元24具体为用户识别模块专属区单元24。
本公开文本实施例中，基带CPU 21与第一协议接口22连接；选择开关23分别与SIMZone单元24连接、与第一协议接口22连接、并与IF1接口连 接。其中，选择开关23与SIMZone单元24之间始终处于连通状态，且选择开关23与第一协议接口22或IF1接口之间处于连通状态。进一步的，当选择开关23与第一协议接口22之间处于连通状态时，SIMZone单元24用于为基带CPU 21提供SIM卡功能；当选择开关23与IF1接口之间处于连通状态时，SIMZone单元24用于接收通过IF1接口写入的数据。
其中，第一协议接口22具体为通信芯片内部的基于ISO7816的协议接口。
本公开文本实施例中，当IF1接口连接指定类型设备时，选择开关23与IF1接口之间处于连通状态，且选择开关23与第一协议接口22之间处于未连通状态；当IF1接口没有连接指定类型设备时，选择开关23与第一协议接口22之间处于连通状态，且选择开关23与IF1接口之间处于未连通状态。
其中，该指定类型设备具体包括但不限于COS(Chip Operating System，芯片操作系统)编程器或者个人化数据写入设备。
基于此，当通信芯片的IF1接口连接COS编程器或者个人化数据写入设备时，选择开关23通过判断IF1接口的VPP(编程电压)状态，可以确定VPP状态当前为高电平，此时选择开关23的另一端自动倒向IF1接口，使IF1接口与SIMZone单元24连通；当通信芯片的IF1接口没有连接COS编程器或者个人化数据写入设备时，选择开关23通过判断IF1接口的VPP(编程电压)状态，可以确定VPP状态当前为低电平，此时选择开关23的另一端自动倒向第一协议接口22，使第一协议接口22与SIMZone单元24连通。
在本公开文本实施例的一种具体实现方式中，该通信芯片还包括其它单元25。该其它单元25具体包括但不限于DSP(Digital Signal Processing，数字信号处理器)和/或通信芯片外围接口等，该其它单元25的功能在此不再详加赘述。
本公开文本实施例中，上述SIMZone单元24具体包括：RAM(Ramdom Access Memory，随机存储器)241、COS存储单元242、MCU(Micro Control Unit，微控制单元)243、第二协议接口244、个人化数据存储单元245。其中，RAM 241与MCU 243连接，COS存储单元242与MCU 243连接，第二协议接口244与MCU 243连接，个人化数据存储单元245与MCU 243连接。进一步的，SIMZone单元24具体通过该第二协议接口244与选择开关23进 行连接。
本公开文本实施例中，RAM 241，用于保存COS在MCU 243运行所需的临时数据。COS存储单元242，用于保存COS的程序代码。MCU 243，用于运行COS。第二协议接口244，是SIMZone单元24与外部的唯一接口，用于提供通信功能(如ISO7816通信功能)和编程功能。其中，该通信功能提供SIMZone单元24与基带CPU 21之间的通信功能，该编程功能提供IF1接口对COS存储单元242进行COS编程，该编程功能还提供对个人化数据存储单元245进行个人化数据写入。个人化数据存储单元245，用于存储个人化数据。
其中，第二协议接口244具体为基于ISO7816的协议接口。进一步的，在2G网络中，个人化数据具体包括但不限于以下之一或者任意组合：IMSI(International Mobile Subscriber Identification Number，国际移动用户识别码)、ICCID(Integrate Circuit Card Identity，集成电路卡识别码)、PIN1(Personal Identification Number，个人识别密码)、PIN2、PUK1(PIN Unblocking Key，PIN码解锁密码)、PUK2、KI(Key identifier，密钥标识)、SMSP(短信中心号码)；在3G网络中，个人化数据包括但不限于以下之一或者任意组合：IMSI、ICCID、PIN1、PIN2、PUK1、PUK2、密钥(Key)、OPC(运营商密钥)、SMSP。
为了保证安全性，可将SIMZone单元24的安全级别配置到当前传统SIM卡同等的安全级别。由于个人化数据存储单元245不对外暴露，通过COS的安全计算和第二协议接口244的安全通信功能，保证了个人化数据的安全。
本公开文本实施例中，IF1接口具体可以为COS编程接口或者个人化数据写入接口。在IF1接口为COS编程接口时，将COS编程接口连接COS编程器，即第二协议接口244通过COS编程接口连接COS编程器，由COS编程器对COS存储单元242进行COS编程。在IF1接口为个人化数据写入接口时，将个人化数据写入接口连接个人化数据写入设备(可以称为写卡器)，即第二协议接口244通过个人化数据写入接口连接个人化数据写入设备，由个人化数据写入设备对个人化数据存储单元245进行个人化数据写入。
进一步的，IF1接口的硬件线路组成具体包括：VCC(电源)、GND(接 地端)、RESET(复位)、VPP(编程电压)、CLK(时钟)、数据I/O。
当使用IF1接口的COS编程接口对COS存储单元242进行COS编程后，COS存储单元242是一次性编程单元，COS存储单元242内的数据不可被擦除或修改，以保证COS不会被篡改。如果需要修改SIMZone单元24内的个人化数据，需要使用IF1接口的个人化数据写入接口，通过与COS交互完成，具体流程在此不再赘述。需要注意的是，为了保证个人化数据的安全，个人化数据存储单元245可以采用EEPROM(Electrically Erasable Programmable Read-Only Memory，电可擦可编程只读存储器)技术或FLASH技术实现。
本公开文本实施例中，由于SIMZone单元24集成在通信芯片的内部，因此，SIMZone单元24需要与基带CPU 21、选择开关23、其它单元25采用相同的制造制程，如0.13微米制程、65纳米制程等。由于现有技术的限制，不同制程下的SIMZone单元24的设计方法也不尽相同。对于RAM 241、MCU243、第二协议接口244都可以采用和通信芯片中的基带CPU21、其它单元25相同的制程。对于COS存储单元242，可以采用OTP(一次性编程)逻辑技术实现，也适用于不同的制程。对于个人化数据存储单元245，一般只有90nm、0.13微米等的支撑才支持EEPROM或FLASH，因此个人化数据存储单元245采用EEPROM或FLASH实现时，整个通信芯片也只能采用相应的制程。
以下分别说明不同情况下通信芯片的SIMZone单元24的实现方法。
(1)在通信芯片采用65nm、55nm、40nm等以下的制程时，RAM 241、MCU 243、第二协议接口244采用数字技术实现，COS存储单元242采用OTPROM技术实现，个人化数据存储单元245采用MTP逻辑实现。其中，当技术进步到可以在通信芯片内嵌入EEPROM或FLASH时，个人化数据存储单元245可以采用EEPROM或FLASH。由于一般MTP的擦写次数只能达到10次左右，因此个人化数据的更新次数有限；如果采用EEPROM或FLASH实现个人化数据存储单元245，其擦写次数就可以为10万次以上。
按照当前协议标准，当基带CPU 21与SIMZone单元24的通信要求小区更新时，基带CPU21需要向SIMZone单元24写入小区信息，但由于通信芯片将SIMZone单元24集成在内部，因此无需向SIMZone单元24写入小区信 息。基于此，即使人化数据存储单元245采用MTP逻辑实现，也不会有任何问题，只不过个人化数据的更新次数有限，不能频繁地本地写卡或空中写卡。
(2)通信芯片采用0.13微米等以上的制程时，个人化数据存储单元245的实现采用EEPROM或FLASH，个人化数据的更新次数可达到10万次以上。
需要说明的是，通过本公开文本实施例的方式进行设计时，可以保证SIMZone单元24的安全等级不低于传统SIM卡。而且，由于COS程序代码存放于COS存储单元242中，容易被反编译。为了解决这个问题，本公开文本实施例中，在通信芯片的设计过程中，COS存储单元242可以采用硬件逻辑实现，即可以将COS程序代码转换为RTL(寄存器传输级)存储在COS存储单元242。
综上所述，本公开文本实施例中，通过将SIM卡集成在终端设备的通信芯片内，安全性不低于传统SIM卡，降低SIM卡在终端设备的PCB上的占用面积，节省了PCB面积，避免SIM卡作为独立硬件实体，避免插拔过程，提高可靠性和安全性。COS在通信芯片内由硬件逻辑实现，不容易被反编译。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到本公开文本可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开文本的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(例如是个人计算机，服务器，或者网络设备等)执行本公开文本各个实施例所述的方法。
本领域技术人员可以理解附图只是一个优选实施例的示意图，附图中的模块或流程并不一定是实施本公开文本所必须的。
本领域技术人员可以理解实施例中的装置中的模块可以按照实施例描述进行分布于实施例的装置中，也可以进行相应变化位于不同于本实施例的一个或多个装置中。上述实施例的模块可以合并为一个模块，也可以进一步拆分成多个子模块。
上述本公开文本实施例序号仅仅为了描述，不代表实施例的优劣。
以上公开的仅为本公开文本的几个具体实施例，但是，本发明并非局限 于此，任何本领域的技术人员能思之的变化都应落入本发明的保护范围。

Claims (9)

  1. 一种集成有用户识别模块(SIM)卡的通信芯片，所述通信芯片包括：基带中央处理器(CPU)、第一协议接口、选择开关和SIMZone单元；
    所述基带CPU与第一协议接口连接；所述选择开关分别与所述SIMZone单元、所述第一协议接口连接，所述选择开关还与IF1接口连接；
    所述选择开关与所述SIMZone单元之间始终处于连通状态，当所述选择开关与所述第一协议接口之间处于连通状态时，所述SIMZone单元用于为所述基带CPU提供SIM卡功能；当所述选择开关与所述IF1接口之间处于连通状态时，所述SIMZone单元用于接收通过所述IF1接口写入的数据。
  2. 如权利要求1所述的通信芯片，其中，当所述IF1接口连接指定类型设备时，所述选择开关与所述IF1接口之间处于连通状态，且所述选择开关与所述第一协议接口之间处于未连通状态；当所述IF1接口没有连接指定类型设备时，所述选择开关与所述第一协议接口之间处于连通状态，且所述选择开关与所述IF1接口之间处于未连通状态。
  3. 如权利要求2所述的通信芯片，其中，所述指定类型设备具体为芯片操作系统(COS)编程器或者个人化数据写入设备。
  4. 如权利要求1所述的通信芯片，其中，所述SIMZone单元包括：随机存储器(RAM)、COS存储单元、微控制单元(MCU)、第二协议接口、个人化数据存储单元；
    所述RAM与MCU连接，所述COS存储单元与MCU连接，所述第二协议接口与MCU连接，所述个人化数据存储单元与MCU连接，且所述SIMZone单元通过所述第二协议接口与所述选择开关连接；其中：
    所述RAM，用于保存COS在MCU运行所需的临时数据；
    所述COS存储单元，用于保存COS的程序代码；
    所述MCU，用于运行COS；
    所述第二协议接口，用于提供通信功能和编程功能，通信功能提供所述SIMZone单元与所述基带CPU之间的通信功能，编程功能提供IF1接口对COS存储单元进行COS编程，对个人化数据存储单元进行个人化数据写入；
    所述个人化数据存储单元，用于存储个人化数据。
  5. 如权利要求4所述的通信芯片，其中，
    在2G网络中，所述个人化数据包括以下之一或者任意组合：国际移动用户识别码(IMSI)、集成电路卡识别码(ICCID)、个人识别密码(PIN1、PIN2)、PIN码解锁密码(PUK1、PUK2)、密钥标识(KI)、短信中心号码(SMSP)；
    在3G网络中，所述个人化数据包括以下之一或者任意组合：IMSI、ICCID、PIN1、PIN2、PUK1、PUK2、密钥(K)、运营商密钥(OPC)、SMSP。
  6. 如权利要求4所述的通信芯片，其中，
    所述第一协议接口具体为基于智能卡国际标准ISO7816的协议接口；
    所述第二协议接口具体为基于智能卡国际标准ISO7816的协议接口。
  7. 如权利要求4所述的通信芯片，其中，所述IF1接口具体为COS编程接口或个人化数据写入接口；在所述IF1接口为COS编程接口时，所述第二协议接口通过所述COS编程接口连接COS编程器，由所述COS编程器对COS存储单元进行COS编程；在所述IF1接口为个人化数据写入接口时，所述第二协议接口通过所述个人化数据写入接口连接个人化数据写入设备，由所述个人化数据写入设备对个人化数据存储单元进行个人化数据写入。
  8. 如权利要求1、2、4、7中任一项所述的通信芯片，其中，
    所述IF1接口的硬件线路组成具体包括：电源(VCC)、接地端(GND)、复位(RESET)、编程电压(VPP)、时钟(CLK)、数据I/O。
  9. 如权利要求1所述的通信芯片，其中，所述通信芯片还包括：数字信号处理器(DSP)和/或通信芯片外围接口。
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EP3082375A1 (en) 2016-10-19
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EP3082375A4 (en) 2017-08-02

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