CN104394279A - Communication terminal and terminal interface equipment for SIM card wireless data transmission - Google Patents
Communication terminal and terminal interface equipment for SIM card wireless data transmission Download PDFInfo
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- CN104394279A CN104394279A CN201410735422.3A CN201410735422A CN104394279A CN 104394279 A CN104394279 A CN 104394279A CN 201410735422 A CN201410735422 A CN 201410735422A CN 104394279 A CN104394279 A CN 104394279A
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Abstract
The invention belongs to the field of communication terminal equipment. The invention discloses a technology implementation solution for communication terminal interface equipment, so that a wireless communication link can be created between the communication terminal equipment and the SIM (subscriber identity module) card through the solution. In a specific function realization process, corresponding software or hardware modules can be added into a communication terminal to simply and easily realize the function. A data wireless communication interface can be realized between the communication terminal equipment and the SIM card by one independent equipment such as mobile phone accessories, wherein the independent equipment is integrally designed with the accessories. Meanwhile, local backups of files from a file system of the SIM card is stored by realizing the function of the local data memory module of the communication terminal interface equipment (including a file security management system and a file management synchronization system), and the data transfer volume of the wireless communication link is reduced when the security of the SIM card data is retained.
Description
Technical field
The invention belongs to communication terminal device field.Specifically, the present invention relates to a kind of communication terminal interface equipment being applicable to Wireless Data Transmission between communication terminal and user identity module card, meanwhile, also relate to the software of this interface equipment or the concrete methods of realizing of hardware capability.
Background technology
At present, (comprise mobile phone, mobile fixed-line, panel computer, notebook computer, desktop computer, intelligent home device is as intelligent television, and home media center is as Set Top Box, and home network center is as router primarily of communication terminal device for mobile communication subscriber equipment.For easy, be called for short mobile phone all without exception below) and user identity module card (comprise the SIM card of gsm system, the UIM card of cdma system, and the usim card that 2G, 3G and 4G mobile communication system can use.For easy, be called for short SIM card all without exception below) two part compositions.Wherein communication terminal device has and connects the radio communication function of cellular mobile communications network, and SIM card is mainly used in mobile communications network to the safe storage of authenticating user identification authentication and user profile and transmission.SIM card can also be used for the certification to mobile communications network, to prevent mobile phone from accessing the false network pretended to be, and the communication security of protection user.
In existing technology realizes, interior of mobile phone has a deck, is communicated after making SIM card insert deck by pin contact with mobile phone.Concrete communication protocol defines in relevant smart card transmission standard (as ISO-7816 defines host-host protocol, ETSI TS 102211,3GPP TS11.11 etc. define telecommunications application protocol).This communication is a kind of wire communication form, is contacted, set up wired communication link by the contact of SIM card with the deck pin of interior of mobile phone.But, due to the convenience of radio communication, this wire communication also can with one easily radio communication connect mobile phone and SIM card.
In Chinese invention application 201410452312.6 " a kind of separate type SIM card deck equipment of intelligence and communication means ", disclose a kind of intermediate equipment between mobile phone and SIM card, intelligent SIM card deck, replaces the existing SIM card deck being fixed on interior of mobile phone.Interface between intelligent SIM card deck and SIM card is existing contact pin (i.e. the deck pin of mobile phone type), and can be wireless transmission interface with the interface of mobile phone.In the invention, mobile phone terminal has a corresponding functional module (being called communication terminal interface equipment), coordinates intelligent SIM card deck to complete the RFDC between mobile phone and SIM card.
Like this, communicated with the connection forwarding of intelligent SIM card deck by communication terminal interface equipment, between mobile phone and SIM card, just establish a wireless link, the exchanges data between mobile phone and SIM card just can have been come by wireless transmission.As long as the transmission error of wireless transmission and propagation time delay are in the scope of existing standard, In the view of SIM card and network both sides, the communication terminal interface equipment in the middle of this and intelligent SIM card deck are exactly transparent, and they all can not be awared it and exist.On existing mobile subscriber identifier authentication process and network access security controlling mechanism without any impact, taken into account fail safe and the convenience of wireless transmission interface between mobile phone and SIM card of existing wireless communications network well.
In Chinese invention application 201410495484.1 " wave point between a kind of communication terminal device and SIM card and functional realiey ", further disclose a kind of wireless transmission protocol, make transmission error and propagation time delay all within the permissible range of existing standard.Like this, by the communication protocol of this wireless transmission interface, existing connection by the direct circuit signal (mainly serial data communication I/O interface relates to data information exchange) of six of SIM card holder pins in mobile phone is changed into radio communication connection, is very easy to the use of user.
Main purpose of the present invention is exactly disclose a kind of for the communication terminal interface equipment of mobile phone terminal and the functional realiey of its software or hardware, it is used together with intelligent SIM card deck, has carried out the RFDC between mobile phone and SIM card.
Summary of the invention
Communication terminal interface equipment of the present invention can be utilize the hardware module in existing mobile phone, by increasing new software function module to have realized, for new mobile phone provides this new function, reduces the manufacturing cost of mobile phone.Also comprehensively can be realized by hardware and software, in mobile phone, increase corresponding hardware function and corresponding software function.Can also be an independently cell-phone function accessory, and mobile phone combine work, does not make any change to existing mobile phone.This functional accessory can be the shape of a SIM card, directly inserts in the existing SIM card deck of mobile phone; Also can with other Cellphone Accessories such as mobile phone protective cover, cell phone rear cover, battery of mobile phone etc. integrate, and carry out wired circuit with the SIM card pin of mobile phone and be connected.Like this by the functional accessory form of mobile phone, making does not make any change to existing mobile phone also can have new function, has carried out good re-using to existing mobile phone.
In existing mobile phone, the exchanges data between mobile phone and SIM card has mainly been come by the data-interface between the wireless communication module (being called baseband module, base-band) of mobile phone and SIM card.In order to realize the Wireless Data Transmission between mobile phone and SIM card, then need to increase corresponding functional module at the SIM card interface of baseband module, forward the exchanges data between mobile phone and SIM card.According to different functional realiey and different baseband module SIM card interfaces, different concrete methods of realizings can be had, as described below:
1) baseband module only has a SIM card interface, and mobile phone does not need the deck of contact pin between existing mobile phone and SIM card, and only needs to realize the RFDC between mobile phone and intelligent SIM card deck.In this case, as shown in Figure 1, only need in the baseband module protocol stack of mobile phone, increase corresponding software function module, make all data communication between mobile phone and SIM card, all forwarded by the bluetooth module of mobile phone.In existing market, most mobile phones all has wireless blue tooth module, and such implementation only needs, in the software simulating of mobile phone, to increase corresponding functional module, and do not need to make any change to hardware, decrease the manufacturing cost of mobile phone.
2) baseband module only has a SIM card interface, and while the deck realizing contact pin between mobile phone and SIM card, also needs to realize the RFDC between mobile phone and intelligent SIM card deck.In this case, as shown in Figure 2, at the SIM card interface of baseband module, a SIM card switch controller is increased.SIM card switch controller has a SIM card input/output interface, be connected to the SIM card interface of baseband module, have two other SIM card input/output interface, a SIM card deck being connected to contact, another connects the data communication software functional module of SIM card simultaneously.SIM card switch controller has automatic switching function, makes at mobile phone, is just equal to a double-card dual-standby sim card connector.In user sees, mobile phone is exactly a double card double standby mobile phone.The data communication software functional module of SIM card is further connected to bluetooth communication interface, be used for forwarding the data communication of this SIM card branch, and intelligent SIM card deck sets up Bluetooth wireless communication link.Bluetooth communication also can utilize Bluetooth function in existing mobile phone, and only needing increases SIM card switch controller and corresponding software function module again in mobile phone.
3) baseband module has two SIM card interfaces, also realizes the RFDC between mobile phone and intelligent SIM card deck while the deck realizing contact pin between mobile phone and SIM card.In this case, as shown in Figure 3, a SIM card interface of baseband module is connected to SIM card deck, and another SIM card interface is connected to data communication software functional module, and connects bluetooth communication interface further.Like this, one, two SIM card interfaces of baseband module are wiredly connected to SIM card, and another is that wireless connections are in SIM card.But In the view of mobile phone and user, be just equal to a double-card dual-standby sim card connector.In this case, only need to increase corresponding software function module, do not need to increase hardware function.
In the implementation method of communication terminal interface equipment as above, corresponding hardware or software function module is increased in the inside of mobile phone, and utilize existing wireless blue tooth communication module in mobile phone, the wireless communication interface of SIM card just can be increased in the mobile phone of new listing, implement simple, easily.But, for existing user mobile phone in use, this new SIM card wireless communication interface cannot be increased by the method for simple software upgrading, and need the chip manufacturer of baseband module first to develop new baseband module, to provide the data retransmission communication function of the SIM card interface of baseband module.Below, the open another kind of the present invention realizes the communication terminal interface equipment of the RFDC between mobile phone and intelligent SIM card deck, this interface equipment is a module independent of mobile phone, uses together with existing mobile phone, just can carry out RFDC with intelligent SIM card deck.By this standalone module, to existing mobile phone in use without any change, or only need in mobile phone, to increase an application software, to realize some simple controlling functions, for user provides more convenient occupation mode.
As shown in Figure 4, free-standing communication terminal interface equipment of the present invention is primarily of such as lower part composition:
1) micro controller module (MCU, Micro Control Unit, is also called one chip microcomputer, Single Chip Microcomputer, or single-chip microcomputer).This module is equivalent to the central processing unit of computer, is the control of whole interface equipment, communication, data processing centre, and has each following connection:
A) the SIM card interface of microcontroller and baseband module has and directly connects one to one, comprise positive source (VCC) and negative pole (GND), clock signal (CLK) interface, reset signal (RST) interface, the connection that five, data communication (IO) interface is wired.Program voltage (VPP) interface of SIM card interface can not connect, or is directly connected with positive source, because the storage chip in modern times has not needed to read and write voltage especially.
B) microcontroller and less radio-frequency RF model calling, from baseband module SIM card interface to data send to intelligent SIM card deck by the mode of wireless transmission, also received the data come from intelligent SIM card deck transmission by less radio-frequency RF module, and be transmitted to the data communication I/O interface of baseband module SIM card.
C) microcontroller is connected with data memory module, during each session, temporarily stores the data that some comes from intelligent SIM card deck transmission.
D) microcontroller is connected with battery module, obtains the energy supply that microcontroller runs and the charging controlled battery.
2) less radio-frequency RF module.The wireless transmission of this module in charge deal with data and reception, be transferred to intelligent SIM card deck the data from microcontroller by the mode of less radio-frequency, also receives the data come from intelligent SIM card deck wireless transmission.Less radio-frequency can be special frequency range, also can be the free frequency range without the need to license, as the 2.4G of ISM (Industrial Scientific Medical, industry, science and medical treatment), and 5G frequency range.
3) data memory module.Some data that the provisional storage of this module in charge comes from intelligent SIM card deck wireless transmission, these data need to exchange in multiple times between the baseband module and SIM card of mobile phone.After microcontroller first time receives the such data transmitted from intelligent SIM card deck, just these data are stored in data memory module.And if microcontroller receives the same commands of base band Module SIM card interface later, these data are read in order to reply baseband module from data memory module with regard to direct, and do not need by less radio-frequency RF module transfer to intelligent SIM card deck, then wait for the reply of intelligent SIM card deck.Such as, have the status inquiry command " 80, f2,0, c, 0 " of one-period between baseband module and SIM card, microcontroller just directly can read from data memory module and reply data " 90,0 ", is transferred to the SIM card interface of mobile phone baseband module.Like this, the data volume of wireless transmission can be reduced, save energy, extend the service time of battery.
4) battery module.This module in charge energy supply, comprises microcontroller operation and the electric energy needed for less radio-frequency.
The micro controller module of communication terminal interface equipment is the nucleus module of whole equipment, and except completing transfer of data, data store, and outside the function of data processing, for the SIM card interface of baseband module, are exactly a SIM card, complete the repertoire of SIM card.And at the SIM card interface of baseband module, it is transparent, and the SIM card of a real insertion mobile phone card seat is without any difference.As shown in Figure 5, micro controller module has following function (such as the data of the module wherein shown in dotted line store Read-write Catrol module, and file management security system modules and file management synchro system module etc. are optional):
1) microcontroller is connected to the power interface (comprising VCC interface and GND interface) of baseband module SIM card interface, obtains power supply supply, to the charging battery module of interface equipment.According to the interface standard 3GPPTS 31.101 of mobile phone and SIM card, the voltage of SIM card interface can be 3.0 volts, also can be 1.8 volts.If the interface power voltage and current supply of SIM card can meet the power supply requirement of micro controller module, then except giving charging battery module, micro controller module directly can also obtain from the power interface of SIM card the power supply supply himself run.Like this, just decrease the consumption to battery, extend the service time of battery.
2) microcontroller is connected to the clock interface (CLK) of baseband module SIM card interface, for supporting clock stop mode.Because micro controller module has the independent operating clock signal of oneself, it does not resemble the clock signal needing baseband module SIM card interface common SIM card.The clock signal of micro controller module application SIM card interface is mainly used for the clock stop mode supporting baseband module.In existing mobile phone, when baseband module does not have data to need and SIM exchanges time, just stop clock signal, to save electrical source consumption.When micro controller module detects that the clock signal of SIM card interface is in stop mode, just can enter lower powered energy conservation model, such as, close wireless radio frequency modules, or enter sleep pattern further, reduce electrical source consumption.
3) microcontroller is connected to the replacement interface (RST) of baseband module SIM card interface, for detecting the reset signal of SIM card interface.When a handset is turned on, or when there is mistake in the communication between mobile phone and SIM card, need the session reinitialized between baseband module and SIM card, the SIM card interface of baseband module just sends a reset signal, and notice SIM card starts the session cycle started between them.When microcontroller detects reset signal, just directly reply a reset answer message (ATR, Answer To Reset) to SIM card interface, do not need to carry out exchanges data by wireless transmission interface and intelligent SIM card deck again.Such as, reply an original character " 3b " directly to baseband module SIM card interface, represent the logic appointment of Direct Model, afterwards with in the communicating of SIM card interface, all use this Direct Model, with high level representative digit signal 1, with low level representative digit signal 0.
4) microcontroller is connected to the data-interface (IO) of baseband module SIM card interface, for the exchanges data with SIM card interface.This exchanges data is the sequence of direct binary one and 0, according to as above 3) described in bar with the logic appointment of Direct Model, for numeral 1, microcontroller exports high level signal to data-interface, for numeral 0, then output low level signal.The duration of high level or low level signal is then determined according to the clock frequency of baseband module SIM card interface and the transmission standard of ISO-7816.Such as, if the clock frequency of SIM card interface is 3.25 million, during initialized reset answer message, the transmission standard of ISO-7816 specifies that the duration of its level signal is 372 clock cycle, and being converted into chronomere is exactly 114.5 microseconds.Because micro controller module has the independent operating clock signal of oneself, it is just according to the clock frequency of oneself, and the duration of control level signal is 114.5 microseconds, instead of 372 clock cycle.Equally, for later SIM card application data exchange process, if support the fine mode of application data rate, the duration indicating its level signal in reset answer message is 64 clock cycle, namely 19.7 microseconds, micro controller module is also control according to the clock frequency of oneself.
5) microcontroller has the function of wireless transmission protocol stack process, is mainly used for the specific implementation of the wireless transmission interface agreement between intelligent SIM card deck equipment.Wireless transmission protocol stack can use the wireless protocols of existing standard as Bluetooth transmission protocol, protocol of wireless local area network etc., also can be special wireless transmission protocol, for optimizing the wireless transmission between baseband module SIM card interface and intelligent SIM card deck, with controls transfer time delay and error of transmission, meet the demand of existing standard better.Meanwhile, because the exchanges data between baseband module and SIM card is point-to-point communication, this special host-host protocol also can have better transmission performance and Information Security.In addition, micro controller module also controls the wireless radio frequency modules relevant to wireless transmission, and as the opening and closing time of less radio-frequency, the watt level of wireless transmission, obtains best transfer of data effect to reach with minimum electrical source consumption.
6) microcontroller has the read-write capability of data memory module, for transmitting provisional storage and the reading of data.As shown in Figure 6, after micro controller module receives the order transmitted from baseband module SIM card interface, whether the kind according to order judges can reuse the reply data of this order.If can reuse the reply data of this order, then when first time receives this order, this order is radioed to intelligent SIM card deck, wait for the reply data of SIM card, when after the reply data receiving SIM card, while reply baseband module SIM card interface, these reply data are stored in data memory module, wait for that next time uses.When micro controller module second time and after receiving this same commands later, reply data due to it to be stored in data memory module, just directly can read from data memory module, and not need to send to intelligent SIM card deck by wireless transmission interface again.Like this, decrease the wireless air transmission of data, save electrical source consumption, decrease the time delay of replying data.The data of these provisional storages are just effective in the current session cycle, in another session cycle, need again to store relevant data.Certainly, if all exchanges data have all been come by wireless transmission between baseband module SIM card interface and intelligent SIM card deck equipment, microcontroller just can not have the read-write capability of this data memory module.
7) microcontroller has power control function, and for controlling to the charging of the battery of communication terminal interface equipment, and the power supply of charging obtains from power supply (VCC) interface of SIM card interface.Power control function also judges for the power supply supply of micro controller module oneself and selects, if the supply voltage of SIM card interface and electric current are for satisfying the demands, just directly can obtain power supply supply from the power interface of SIM card interface, reduce the electrical source consumption to battery, extend the service time of battery.If the supply voltage of SIM card interface or electric current supply can not satisfy the demands, then need to obtain power supply supply from the battery of communication terminal interface equipment, or obtain power supply supply from both simultaneously.
In the actual use procedure of user, the mobile phone of use and SIM card are all relatively-stationary.That is, in the conversation procedure of mobile phone and SIM card each time (such as from mobile phone power-on to the process of shutdown), a lot of data are had to repeat transmission, such as, international mobile subscriber identification number (IMSI, International Mobile Subscriber Identification), although only need transmission primaries or several times little in each conversation procedure, but need transmission in each conversation procedure, for the authenticating user identification authentication of mobile communications network access.Like this, in the data memory module of communication terminal interface equipment, can with one piece of storage area, in order to store these relatively-stationary SIM card data.These relatively-stationary SIM card data can be stored reservation during different sessions, in mobile phone afterwards and the conversation procedure of SIM card, just repeatedly need not be read from SIM card by wave point again, but read from data memory module.So just further reduce the data wireless air transmission between baseband module SIM card interface and intelligent SIM card deck equipment, decrease the time delay of wireless transmission on the one hand, decrease the electrical source consumption of wireless transmission on the other hand.
In the data file that SIM card stores, most files, under suitable access security controls, all can be read and write.Such access security controls the verification comprising PIN (Personal Identification Number, individual recognition code) code, for the protection of the safety of user data.Like this, micro controller module just can pass through wireless transmission interface, the data file in SIM card is obtained from intelligent SIM card deck equipment, and is stored in the data memory module of communication terminal interface equipment, in order to using.In order to ensure the safety of the data file in SIM card, micro controller module, except having functional module as above, as shown in Figure 5, also has following functional module:
8) microcontroller has file management security system modules, is mainly used in the file access security control to the data memory module being stored in communication terminal interface equipment, and these data files are copies of the file of SIM card.Reading or before write operation, all by the inspection of the access rights of file, will only having when the corresponding access rights with this file just can carry out read-write operation further each time to these files.
9) microcontroller has file management synchro system module, and the backup file being mainly used in keeping being stored in data memory module is consistent with it at the corresponding document of SIM card.Because micro controller module is according to the order transmitted from baseband module SIM card interface, renewal rewards theory is carried out to existing file or after creating new file, the file system in data memory module just and the file system of SIM card just variant.By periodic simultaneous operation, make can be consistent between them.
As shown in Figure 7, micro controller module, first according to the kind of document of SIM card file system, judges whether this data file can by external device access, some data, as the specific implementation of the authentication Authentication Algorithm A3 8 of SIM card, can not by external device access.Can not by the SIM card data of external device access for those, just can not preserve a backup in the data memory module of communication terminal interface equipment, be merely able to, when each needs, by Wireless Data Transmission interface and intelligent SIM card deck equipment, obtain from SIM card.If data can by external device access, but for some data, as authenticating user identification KI Ki, be merely able to be moved communication network operator access, user does not have access rights.For these data, also when each needs, can only be obtained from SIM card by Wireless Data Transmission interface.Certainly, according to wireless network access security controlling mechanism, these data can not directly read, but some result of calculation that reading is carried out calculating according to them and obtained.So what obtained by Wireless Data Transmission interface is these result of calculations, instead of data itself.If the data file of SIM card file system can be read by a user (the access rights safety verification by suitable), then micro controller module just can pass through Wireless Data Transmission interface, obtain the full content of this file from SIM card, and preserve a backup in the data memory module of communication terminal interface equipment.The content obtained from SIM card comprises the total data of file and the access security controlled attribute of file itself, like this, when each this backup file is conducted interviews time, by file management security system modules, first will carry out the inspection of file access authority.Only have when by file access authority verification, can continue to carry out read and write access to file.Micro controller module is according to the order transmitted from baseband module SIM card interface, carrying out renewal rewards theory to the content of this file, or create new file, is all directly carry out in data memory module, and do not need by Wireless Data Transmission interface, in the operation of SIM card medium-long range.Through after a period of time, the file system of SIM card just and the backup file system of data memory module inconsistent, this is, just by file management synchro system module, the file periodically synchronously in their file system, makes them remain consistent.
Micro controller module preserves the file system backup of a SIM card in the data memory module of this locality, mainly in order to reduce the data volume of wireless transmission interface.Certainly, if all exchanges data of micro controller module and baseband module SIM card interface are all obtained from intelligent SIM card deck equipment by wireless transmission, just do not need the local backup of a preservation SIM card file.
At the data of microcontroller and baseband module SIM card interface and control signal interface as I/O interface, CLK interface and RST interface, the input/output peripheral of microcontroller can be utilized as universal input/output interface (GPIO, General Purpose Input/Output Ports).Wherein CLK interface and RST interface are due to only from baseband module SIM card interface to the control signal one-way transmission of SIM card, therefore, this universal input/output interface directly can be arranged to the input pattern of microcontroller, reads from the CLK signal of baseband module SIM card interface and reset RST signal for microcontroller.
For the transfer of data I/O interface of baseband module SIM card interface, its input and output are all completed by same circuit, namely on same circuit, from baseband module SIM card interface to the transfer of data of microcontroller and from microcontroller to the transfer of data of baseband module SIM card interface be the time division multiplexing (TDD by a transmission line, Time Division Duplexing), carry out in the different moment.So, need to export GPIO interface at same universal input and constantly switch input and output pattern, bring difficulty to realization.The present invention is open another kind of is easy to implementation as shown in Figure 8, and what data I/O port was arranged to GPIO interface opens Lou output mode (open-drain), and external pull-up resistor.Before this data I/O port of use, write 1 to this data I/O port, make the connection in the disconnection of the inside of microcontroller and this data I/O port, and provide high level signal by external power source.
In the host-host protocol of ISO-7816, in the starting position of the bit signals (check digit of the information bit of 8 positions and 1 position, totally 9) of the transmission of each, there is the low level signal of a position, be called initial bit, represent the beginning of transmission byte.Because transfer of data GPIO mouth is arranged to out leakage output mode, and external pull-up resistor, no matter that baseband module SIM card interface or microcontroller GPIO interface are when writing 0 to this data I/O port circuit, there is low level signal in capital, because in the inside of microcontroller, this GPIO interface connects language power cathode.Like this, just identify the beginning of transmission byte well, facilitate the detection of transmission byte.Therefore, be no matter the data input of microcontroller or export, well can keep the time synchronized with the bit signals of baseband module SIM card interface transmission.
When micro controller module reads by data I/O port the data-signal come from the transmission of baseband module SIM card interface, in order to increase the accuracy of reading, as shown in Figure 9, Elementary Time Unit (the ETU that can continue a data bit, Elementary Time Unit) in, read data I/O port in multiple times.According to reading result repeatedly, then judge it is high level signal or low level signal, thus obtain numeral 1 or 0.Such as, within the duration of a bit, read data I/O port by continuous three times, if there be twice or three times to be all high level signal, then think and receive digital signal 1.Equally, if there be twice or three times to be all low level signal, then think and receive digital signaling zero.
Micro controller module by data I/O port to baseband module SIM card interface transmission data signal time, by writing high level signal to data IO or low level signal realizes.Such as, for the logic appointment (original character " 3b ") of Direct Model, just with high level representative digit signal 1, with low level representative digit signal.Micro controller module, according to the operation clock frequency of oneself, the duration of control level signal, makes the duration of each digital signal be an Elementary Time Unit ETU.
By the specific implementation of each functional module as above and being interconnected and acting between them, make communication terminal interface equipment of the present invention can complete required function.For baseband module SIM card interface, communication terminal interface equipment of the present invention is exactly a SIM card, it ignorant SIM card data be obtained from real SIM card by the mode of wireless transmission.But conceal radio communication function to baseband module SIM card interface, making baseband module SIM card connect only needs to know the content of reply data to each order, and do not need unnecessaryly to know how reply data obtains yet.
The effect of invention
By implementer's case of communication terminal interface equipment of the present invention, communication terminal device can set up wireless communication link with intelligent SIM card deck, the exchanges data of communication terminal and SIM card wirelessly can be carried out, be very easy to the use of user.In concrete software or hardware implementing, can be increase corresponding functional module in the inside of communication terminal, implement simple, easily.Also can be an independently equipment, be realized by modes such as Cellphone Accessories, work together with the communication terminal such as mobile phone, and then and intelligent SIM card deck set up wireless communication link.Such accessory implementation, the equipment such as the mobile phone in can using existing user not in addition any change just introduce new function, good re-using has been carried out to existing equipment.Simultaneously, by the functional realiey of the local data storage module at communication terminal interface equipment, comprise file management safety system and file management synchro system, the file part ground local backup of the file system of SIM card is preserved, while the fail safe keeping SIM card data, decrease the volume of transmitted data of wireless communication link.
Accompanying drawing explanation
Fig. 1 of the present inventionly realizes the schematic diagram of communication terminal interface equipment at interior of mobile phone by software function module.Mobile phone baseband module only has a SIM card interface, and in mobile phone, only realize the wireless communication link between mobile phone baseband module and intelligent SIM card deck equipment.
Fig. 2 of the present inventionly realizes the schematic diagram of communication terminal interface equipment at interior of mobile phone by software function module and hardware function.Mobile phone baseband module only has a SIM card interface, by increasing SIM card automatic switching controller, realize the wireless communication link between mobile phone baseband module and intelligent SIM card deck equipment in mobile phone while, also achieve contact SIM card deck at interior of mobile phone, make mobile phone become a double-card dual-standby formula mobile phone.
Fig. 3 of the present inventionly realizes the schematic diagram of communication terminal interface equipment at interior of mobile phone by software function module.Mobile phone baseband module has two SIM card interfaces, in mobile phone, the wireless communication link between mobile phone baseband module and intelligent SIM card deck equipment is only realized by a road SIM card interface, achieve contact SIM card deck by another road SIM card interface at interior of mobile phone simultaneously, make mobile phone become a double-card dual-standby formula mobile phone.
Fig. 4 is free-standing communication terminal interface equipment chief component schematic diagram of the present invention.Comprise the link block with baseband module SIM card interface, micro controller module, data memory module, wireless radio frequency modules, battery module.
Fig. 5 is the micro controller module chief component schematic diagram in free-standing communication terminal interface equipment of the present invention.Comprise universal input/output interface module (CLK, RST, IO), power supply link block, wireless transmission protocol stack module, energy supply control module, data read-write control module, file management security system modules and file management synchro system module.Wherein module shown in dotted line is as data read-write control module, and file management security system modules and file management synchro system module are optional.
Fig. 6 is the provisional data Stored Procedure schematic diagram of free-standing communication terminal interface equipment of the present invention in each session cycle.
Fig. 7 is the data Stored Procedure schematic diagram that free-standing communication terminal interface equipment of the present invention is preserved in the different sessions cycle.In the local memory module of communication terminal interface equipment, store the backup of part SIM card data file.
Fig. 8 is the data I/O interface functional realiey schematic diagram of micro controller module of the present invention.
Fig. 9 is that the digital signal read functions of data I/O interface of the present invention realizes schematic diagram.
Figure 10 is that the Cellphone Accessories of free-standing communication terminal interface equipment of the present invention realize schematic diagram.Wherein mobile phone protective cover and drawer type SIM card Kato are Cellphone Accessories, and communication terminal interface equipment and mobile phone protective cover are unitary design.
Figure 11 is that the another kind of Cellphone Accessories of free-standing communication terminal interface equipment of the present invention realize schematic diagram.Communication terminal interface equipment is designed to the shape of SIM card, has shape and the size of actual SIM card, directly inserts in the SIM card draw-in groove of mobile phone.
Embodiment
For communication terminal interface equipment of the present invention, mainly contain the embodiment of two kinds of large classes, namely by increasing the mode of new functional module and the accessory independent of mobile phone at interior of mobile phone.Wherein increase the mode of new functional module at interior of mobile phone, according to different mobile phone concrete functions, have different embodiments, some mobile phones only need increase and the improvement of carrying out software function, and some mobile phones need the synthesis improvement carrying out hardware and software.The embodiment of Cellphone Accessories is in a free-standing that example comes further that the present invention will be described below.
Examples of implementation 1
The Cellphone Accessories of the present embodiment are mobile phone protective covers.In existing market, there is the SIM card slot of mobile phone to be greatly design in the side of mobile phone, by the SIM card Kato of drawer type, SIM card is inserted in mobile phone.As shown in Figure 10, in the SIM card slot of mobile phone, there is the contact contact of SIM card, make, after SIM card is inserted, by these contact contacts, to be connected with mobile phone, to set up wired communication link, carry out exchanges data.
Except mobile phone protective cover, another accessory of the present embodiment is drawer type SIM card Kato.This SIM card Kato major function is not the insertion for SIM card, but replaces Kato and the SIM card of original mobile phone, inserts in the SIM card slot of mobile phone.That is, the Kato of this accessory itself does not have the function of SIM card, a real SIM card need not be inserted the SIM card slot of mobile phone yet.Unique function of this accessory Kato is after it inserts the SIM card slot of mobile phone; the contact contact of the SIM card slot of mobile phone can be directed to the side of mobile phone, so that set up wired connection by mobile phone protective cover and communication terminal interface equipment of the present invention.
As shown in Figure 10, the accessory drawer type SIM card Kato of the present embodiment, the same with SIM card, there are (or five, six contact contacts, wherein program voltage VPP contact can), each contact is connected to the outer ledge of Kato by wired circuit.After Kato inserts the card slot of mobile phone, its corresponding contact is just connected with the contact of mobile phone (dotted line as Figure 10 connects shown), and is connected to the outer ledge of Kato by wired circuit.Like this, just the baseband module SIM card interface of mobile phone is drawn out.
As shown in Figure 10; mobile phone protective cover and the communication terminal interface equipment of the present embodiment are unitary design; communication terminal interface equipment is embedded in mobile phone protective cover, In the view of user, and Here it is the mobile phone protective cover Er Yin KURA function of communication terminal interface equipment.Mobile phone protective cover as the accessory of mobile phone, with mobile phone just together with the use of.In communication terminal interface equipment, by wired circuit, corresponding interface is connected to (as shown in Figure 5, comprising VCC, GND, CLK, RST, I/O interface) lateral edge of mobile phone protective cover.Like this; after mobile phone protective cover put into by mobile phone (drawer type SIM card Kato has inserted wherein), the contact of its Kato outer ledge just contacts one to one with the contact of mobile phone protective cover lateral edge and is connected (dotted line as Figure 10 connects shown).Like this, communication terminal interface equipment just establishes wired circuit with the baseband module SIM card interface of mobile phone and is connected, its corresponding interface is as VCC, GND, CLK, RST, I/O interface just couples together correspondingly, and has identical effect at interior of mobile phone by the functional module increasing software or hardware.
By the present embodiment, make use of the accessory functions of mobile phone protective cover and SIM card Kato, existing user mobile phone is not in use made any change, just can introduce new function to mobile phone, convenient for users to use.
Examples of implementation 2
The Cellphone Accessories of the present embodiment are shapes communication terminal interface equipment being designed to SIM card, directly insert in the SIM card slot of mobile phone.In existing market, have the SIM card slot of mobile phone to be greatly design in the inside of mobile phone, need the shell bonnet opening mobile phone, some mobile phones also need further to take off battery, could insert SIM card.
As shown in figure 11, in the equipment of the SIM card shape of standard, be embedded with communication terminal interface equipment, and its corresponding interface is as VCC, GND, CLK, RST, I/O interface, at the SIM card contact contact position of standard, has wired circuit and connects.The SIM card shape equipment of such standard itself is not a SIM card, but a freestanding communication terminal interface equipment, just there is shape and the size of SIM card, the convenient SIM card slot inserting mobile phone.Like this, after the Cellphone Accessories of this shape and size with SIM card insert the SIM card slot of mobile phone, shown in dotted line as Figure 11 connects, communication terminal interface equipment just establishes wired circuit with the baseband module SIM card interface of mobile phone and is connected, and makes mobile phone and intelligent SIM card deck equipment just have wireless communication link.
In specific embodiment, can also the functional module of communication terminal interface equipment be integrated in different Cellphone Accessories, as battery of mobile phone, cell phone rear cover etc.Its main object is that communication terminal interface equipment and these Cellphone Accessories are carried out unitary design, just and mobile phone cooperation, uses, for mobile phone provides the wireless communication link between intelligent SIM card deck equipment together.Its crucial part realizes the corresponding interface of communication terminal interface equipment to be connected with the wire circuit of the contact contact of SIM cards of mobile phones slot, just can realize repertoire of the present invention.
Claims (10)
1. the interface equipment for wireless communication terminal, it is characterized in that: described terminal interface device is in the baseband module of wireless communication terminal inside, increase the functional module of software or hardware, described functional module makes described terminal interface device have following function:
1) described terminal interface device is connected to the SIM card interface of wireless communication terminal baseband module,
2) described terminal interface device is connected to the bluetooth communication interface of wireless communication terminal,
3) described terminal interface device receives the data message sending SIM card from baseband module to, and the bluetooth communication interface of these data messages by wireless communication terminal, sends intelligent SIM card deck equipment to,
4) described terminal interface device is by the bluetooth communication interface of wireless communication terminal, receives the SIM card data message sent from intelligent SIM card deck equipment, and is transmitted to the SIM card interface of wireless communication terminal baseband module.
2. for a baseband module for radio communication, it is characterized in that: the SIM card interface of described baseband module has following function:
1) short-range wireless communications interfaces of wireless communication terminal is connected to, as bluetooth, WLAN (wireless local area network) etc.,
2) the SIM card interface of described baseband module the data sending to SIM card, directly can not send to SIM card, then sends to the short-range wireless communications interfaces of wireless communication terminal,
3) the SIM card interface of described baseband module can receive the data sended over from the short-range wireless communications interfaces of wireless communication terminal, replaces directly from the data that SIM card receives.
3. for an interface equipment for wireless communication terminal, it is characterized in that: described terminal interface device is a specific installation independent of wireless communication terminal, is made up of following functional module:
1) micro controller module,
2) wireless radio frequency modules,
3) data memory module,
4) battery module,
5) the wire circuit module be connected with baseband module SIM card interface.
4. micro controller module according to claim 3, it is characterized in that: described micro controller module circuit is connected to each functional module of terminal interface device, comprise wireless radio frequency modules, data memory module, the interface of battery module and baseband module SIM card as VCC (positive source), GND (power cathode), CLK (clock), RST (replacement), IO (data) interface, the function of described micro controller module is:
1) by the power interface of baseband module SIM card interface, obtain power supply supply, to the charging battery module of terminal interface device, also directly can obtain from the power interface of SIM card the power supply supply himself run,
2) by the clock signal of monitoring baseband module SIM card interface, obtain the state of baseband module SIM card interface, when detecting that baseband module SIM card interface is in clock stop mode, micro controller module just can enter lower powered energy-saving run state,
3) by the reset signal of monitoring baseband module SIM card interface, obtaining the state of baseband module SIM card interface, when reset signal being detected, just restarting the conversation procedure with baseband module SIM card interface,
4) by being connected to the data-interface of baseband module SIM card interface, and baseband module SIM card interface carries out exchanges data,
5) wireless transmission protocol stack process, for and intelligent SIM card deck equipment between the specific implementation of wireless transmission interface agreement,
6) Energy control, for controlling to the charging battery module of communication terminal interface equipment, the control of the power supply supply needed for also running for micro controller module oneself.
5. micro controller module according to claim 3, is characterized in that: described micro controller module can also have following function:
1) data read-write operation is carried out to data memory module as claimed in claim 3, for storing and read the SIM card data sent from intelligent SIM card deck equipment, also for storing and read the order data sent from baseband module SIM card interface.
6. micro controller module according to claim 3, is characterized in that: described micro controller module can also have following function:
1) according to the kind of document of SIM card file system, judge whether user has this file reservation,
2) for the SIM card file that those can be read by a user, just by wireless radio frequency modules as claimed in claim 3 and intelligent SIM card deck equipment, remotely read these files from SIM card, comprise the content of file and the access-control attributes of file,
3) in data memory module as claimed in claim 3, preserve the backup of a SIM card file, these files are SIM card file that those can be read by a user.
4) file management safety system, for the file access security control be stored in data memory module as claimed in claim 3, only after obtaining corresponding file read-write access authorization, could carry out read-write operation to this file,
5) file management synchro system, is consistent for the file remaining on SIM card file system with the respective backup file be stored in data memory module as claimed in claim 3, and periodically carries out file synchronization operation.
7. the data-interface being connected to baseband module SIM card interface according to claim 4, it is characterized in that: described data-interface is the universal input/output interface (GPIO interface) of micro controller module as claimed in claim 3, described GPIO interface is set to out leak (open-drain) output mode, and external pull-up resistor, realized and the exchanges data of baseband module SIM card interface by method as described below:
1) micro controller module as claimed in claim 3 reads the level signal of described GPIO interface, high level signal or low level signal according to reading what obtain, judgement is digital signal 1 or 0, obtains the data message transmitted from baseband module SIM card interface
2) micro controller module as claimed in claim 3 controls described GPIO interface and exports high level signal or low level signal, sends digital signal 1 or 0 to baseband module SIM card interface,
3) the corresponding high level signal in each bit (bit) digital information position or low level signal, the duration of level signal is the Elementary Time Unit that microcontroller as claimed in claim 3 specifies according to its operation clock frequency and corresponding smart card transmission standard (as ISO-7816), and determine according to the clock frequency calculating of baseband module SIM card interface
4) when micro controller module as claimed in claim 3 does not have digital information transmission to baseband module SIM card interface, just export high level signal to described GPIO interface, wait the data message transmitted from baseband module SIM card interface to be read.
8. the level signal read method of GPIO interface according to claim 7, it is characterized in that: in the Elementary Time Unit that a Bit data position continues, read described GPIO interface in multiple times, according to reading result repeatedly, then judge it is high level signal or low level signal.
9. terminal interface device according to claim 3; it is characterized in that: described terminal interface device is as mobile phone protective cover carries out integrated design with the accessory of wireless communication terminal; described terminal interface device is embedded in accessory to become a complete functional accessory; and inserted by drawer type SIM card Kato in the SIM card slot of wireless communication terminal, set up described terminal interface device and be connected with the wire circuit of the baseband module SIM card interface of wireless communication terminal.
10. terminal interface device according to claim 3, it is characterized in that: described terminal interface device has physical form and the size of SIM card formula, can insert in the SIM card slot of wireless communication terminal, and pass through the contact contact of SIM card, set up described terminal interface device and be connected with the wire circuit of the baseband module SIM card interface of wireless communication terminal.
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| CN201410735422.3A CN104394279A (en) | 2014-12-08 | 2014-12-08 | Communication terminal and terminal interface equipment for SIM card wireless data transmission |
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| CN201410735422.3A CN104394279A (en) | 2014-12-08 | 2014-12-08 | Communication terminal and terminal interface equipment for SIM card wireless data transmission |
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