CN104618887A - Method and device for wirelessly sharing SIM card by multiple communication terminals - Google Patents
Method and device for wirelessly sharing SIM card by multiple communication terminals Download PDFInfo
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- CN104618887A CN104618887A CN201510056027.7A CN201510056027A CN104618887A CN 104618887 A CN104618887 A CN 104618887A CN 201510056027 A CN201510056027 A CN 201510056027A CN 104618887 A CN104618887 A CN 104618887A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/183—Processing at user equipment or user record carrier
Abstract
The invention belongs to the field of communication terminal equipment. The invention discloses a method for accessing a mobile communication network among multiple communication terminals by using the same SIM (Subscriber Identity Module) card via a short-distance wireless communication interface. One communication terminal interface equipment matching with the SIM card is inserted in the SIM card slot of each communication terminal, and the SIM card is inserted into intelligent SIM card clamping equipment. The wireless communication interface is arranged between the communication terminal interface equipment and the intelligent SIM card clamping equipment, so that a communication link can be established between the communication terminal and the SIM card through forwarded communication of the wireless communication interface. Multiple logical channels are established and maintained by the intelligent SIM card clamping equipment, one logical channel is applied to one communication terminal to establish a wireless link. In different time slices, the same SIM card interface is adopted by said multiple logical channels in physics.
Description
Technical field
The invention belongs to communication terminal device field.Specifically, the present invention relates to a kind of by short-range radio communication, between multiple communication terminal, share the method for same subscriber identity module (SIM card) accessing mobile communication network, meanwhile, also relate to the equipment realizing this method.
Background technology
Mobile communication terminal device has the function of the cellular mobile communications network of access wide area network.Along with the development of technology and the variation of user's request, mobile communication terminal device has various ways, the mobile phone that such as user carries with usually, also comprises wearable device as watch type mobile telephone.Further, along with the development of mobile internet, miscellaneous equipment is as mobile fixed-line, panel computer, notebook computer, desktop computer, intelligent home device is as intelligent television, home media center is as Set Top Box, and home network center such as router etc. all adds the function that can access cellular mobile communications network.For easy, below these equipment are called for short mobile phone all without exception, the feature of its core is can the function of accessing mobile communication network, instead of is confined to usual used mobile phone in daily life.
In order to complete accessing mobile communication network, mobile phone needs a user identity module card provided by mobile communication operator (SIM card), inserts the SIM card slot of mobile phone, for authentication and the authentication of mobile subscriber.This subscriber identity module comprises the SIM card of gsm system, the UIM card of cdma system, and 2G, 3G and 4G mobile communication system many application UICC card that can use and usim card.For easy; below SIM card is called for short all without exception; its Core Feature is to the safe storage of authenticating user identification authentication and user profile and transmission for mobile communications network; the certification to mobile communications network can also be used for; to prevent mobile phone from accessing the false network pretended to be, the communication security of protection user.And in order to the mobile communications network that compatibility is different, in usim card, usually all comprise the SIM application of access GSM network and USIM application (mainly different basic file system) of access 3G and 4G network.
Mobile phone and SIM card jointly together with composition complete mobile communication subscriber equipment, for user provides Mobile Communication Service.In existing technology realizes, interior of mobile phone has a SIM card deck, is communicated after making SIM card insert deck by pin contact with mobile phone.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 equipment, replaces the existing SIM card deck being fixed on interior of mobile phone.Interface between intelligent SIM card deck equipment 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 equipment to complete the RFDC between mobile phone and SIM card.Like this, communicated with the connection forwarding of intelligent SIM card deck equipment 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 equipment 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.
In Chinese invention application 201410735422.3 " terminal interface device of a kind of communication terminal and SIM card Wireless Data Transmission ", disclose a kind of method realizing communication terminal interface equipment, this communication terminal interface equipment can have the shape of SIM card, in the existing SIM cards of mobile phones slot of direct insertion, carry out the foundation of the wireless communication link of mobile phone and intelligent SIM card deck equipment.Again by inserting the SIM card of intelligent SIM card deck equipment, carrying out the access of the cellular mobile communications network of mobile phone, completing authentication and the authentication of mobile subscriber, for user provides Mobile Communication Service.
Main purpose of the present invention discloses a kind of between multiple communication terminal exactly, by the wave point with intelligent SIM card deck equipment, share the SIM card of same insertion intelligent SIM card deck equipment, make multiple communication terminal to access cellular mobile communications network.Avoid same SIM card extracting and insertion process between the SIM card slot of multiple communication terminal, and multiple communication terminal can be in holding state simultaneously, is prepared as user at any time and provides Mobile Communication Service.Like this, select in the use of the terminal equipment of user, just can be convenient and free.User can according to the demand of different use scenes, the communication terminal that choice for use is different.
Summary of the invention
Method of the present invention mainly passes through the wireless communication interface of the communication terminal interface equipment of mobile phone terminal and the intelligent SIM card deck equipment of SIM card end, completes the access of the mobile communications network of multiple mobile phone.Its central characteristics increases middle wireless forwarding function in the communication link between existing mobile phone and SIM card, and this forwarding capability is In the view of existing mobile phone, SIM card, mobile communications network network tripartite, be all transparent, the wireless forwarding communication all can not awaring these SIM card data exists.The key point of wireless forwarding communication is controls transfer mistake and propagation time delay, makes them within the permissible range of existing standard.Its method detailed is open in Chinese invention application 201410495484.1 " wave point between a kind of communication terminal device and SIM card and functional realiey ".
As shown in Figure 1, the communication terminal interface equipment with radio communication function has shape and the size of SIM card, directly inserts in the SIM card slot of mobile phone.In existing market, the SIM card socket designs of some mobile phone at the side of mobile phone, and inserts SIM card with drawer type SIM card holder.In this case, communication terminal interface equipment just directly has shape and the size of drawer type SIM card holder, inserts in the side slot of mobile phone, no longer needs the SIM card holder of drawer type.The radio communication of this communication terminal interface equipment can be as bluetooth communication, or wireless WiFi module, has digital signal universal input/output interface (GPIO interface), for carrying out data communication with the SIM card interface of mobile phone.In order to describe for simplicity, below be just described for bluetooth communication.
As shown in Figure 1, at the contact position of existing SIM card, there is contact to be connected to bluetooth communication respectively, communication terminal interface equipment is inserted after mobile phone, connected by the contact of the SIM card slot of these contacts and mobile phone.The positive pole (VCC) of its power supply and negative pole (GND) are connected to positive pole and the negative pole of the SIM card slot of mobile phone, directly obtain power supply supply from the SIM card interface of mobile phone, make bluetooth communication that other power supply supply can not be needed just can to run.In addition, three GPIO interfaces of bluetooth communication are also connected to three contact positions of existing SIM card, comprise data-interface (IO), reset interface (RST) and clock interface (CLK), make the SIM card interface of these GPIO mouths and mobile phone carry out exchanges data.Because the program voltage interface (VPP) of existing SIM card does not re-use, so contact can not be had in its position be connected to mobile phone.
Like this, after bluetooth communication inserts the SIM card slot of mobile phone, run by the program of the microcontroller (MCU) of its inside, just serve as the function of a common SIM card.At mobile phone and mobile communications network, the real SIM card of it and, without any difference, can complete authentication and the authentication of mobile subscriber.Because mobile phone and all data required for mobile communications network are all by wireless communication interface, be transmitted to intelligent SIM card deck equipment, then obtained from real SIM card by intelligent SIM card deck equipment, and this process is two-way communication.
In intelligent SIM card deck equipment, its wave point, namely bluetooth communication, have the communication function of point-to-multipoint.That is, it can simultaneously wireless connections in multiple communication terminal interface equipment, and this multiple communication terminal interface equipment inserts in the SIM card slot of multiple different mobile phone respectively, communicates with mobile phone.In fact, at any time, this communication connection is a point-to-point connection, only time division multiplexing (TDMA) is carried out to multiple communication terminal interface equipment, because this time-multiplexed time-switching is very short, so In the view of user, just look like be that to have multiple wireless communication link the same simultaneously.
Fig. 2 illustrates for two mobile phones.In the SIM card slot of two mobile phones, insert a communication terminal interface equipment all respectively, serve as the function of SIM card.And in intelligent SIM card deck equipment, be inserted with SIM card, store the data message for accessing mobile communication network for users.Especially, those, for the data message of authenticating user identification and authentication, can only be stored in SIM card, and when each network requirement authentication information, again at SIM card internal operation authentication arithmetic, authenticating result is returned to network, carry out authentication and authentication for network.Like this, SIM card just and two mobile phones can connect, only by wave point, instead of the form of SIM card slot by existing direct insertion mobile phone.
Due to the convenience of radio communication, so, the communication between SIM card and two mobile phones just can carry out time division multiplexing by time-slotting disconnectedly.When mobile phone 1 needs to communicate with SIM card time, just by the communication terminal interface equipment in mobile phone 1, wireless connections in intelligent SIM card deck equipment, and then communicate with SIM card.Equally, when mobile phone 2 needs to communicate with SIM card time, just by the communication terminal interface equipment in mobile phone 2, wireless connections in intelligent SIM card deck equipment, and then communicate with same SIM card.According to the host-host protocol ISO-7816 standard of smart card, the communication latency between mobile phone and SIM card can reach more than 1 second, and the propagation time delay of bluetooth 4.0 standard can be as short as 3 milliseconds.So, this between two mobile phones the time poll switch communication be completely passable, at mobile phone 1 and mobile phone 2, all as they are independently inserted with SIM card separately.In fact, this is just equivalent to the same SIM card of fast insert-pull between mobile phone 1 and mobile phone 2.When mobile phone 1 needs to communicate with SIM card, just insert SIM card, when not needing.Just extract SIM card, when mobile phone 2 needs to communicate with SIM card, just insert SIM card, when not needing, just extract SIM card.Only this swapping process is fast realized by peer-to-multiple peer wireless communication agreement, instead of by actual manual plug SIM card.Certainly, manually plugging SIM card also can not be so quick.
Fig. 3 is the schematic flow sheet of two mobile phones difference accessing mobile communication networks.First, SIM card is inserted in intelligent SIM card deck equipment.After mobile phone 1 is started shooting, by the communication forwarding of the communication terminal interface equipment of mobile phone 1 and the wireless link of intelligent SIM card deck equipment, all data communication of mobile phone 1 and SIM card are carried out, and complete the mobile communications network access of mobile phone 1, enter holding state.In whole process, this and SIM card are directly inserted in the SIM card slot of mobile phone 1 as broad as long.After mobile phone 1 completes mobile communications network access, enter holding state.Intelligent SIM card deck equipment waits for the order of mobile phone 1, after receiving the order of mobile phone 1, is transmitted to SIM, and the reply data retransmission of SIM to mobile phone 1.By same process, mobile phone 2 also completes the process of start accessing mobile communication network, enters holding state.In fact, mobile phone 1 and mobile phone 2 not free on priority dependence, Fig. 3 is just in order to describe schematic diagram easily, and they are undertaken time-multiplexed by wireless communication protocol to SIM card access.After mobile phone 2 enters holding state, intelligent SIM card deck equipment enters command wait state, when after the order receiving mobile phone 2, is transmitted to SIM card, and the commands in return of SIM is transmitted to mobile phone 2.
According to transport protocol standard, the communication between mobile phone and SIM card, always by order initiated by mobile phone, is terminated by the reply of SIM card to order.Some order, such as read the order (order 0xb0) of binary file, after SIM card receives orders, the data recovery read to mobile phone, order just terminates.Some order, the authentication authentication order (order 0x88 or 0x89) of such as user, needs between mobile phone and SIM card to carry out dialogue repeatedly, could terminate this order.Such a order deadline is called a Session Time cycle.Like this, when SIM card is multiplexing by multiple mobile phone, during switching between mobile phone, after the session end cycle needing wait one complete, could the communicating for the treatment of S IM card and another one mobile phone.
Although the Session Time cycle of each mobile phone and SIM card is very short, after SIM card completes session, enters command wait state immediately, the Next Command of any mobile phone can be received.But when the order of multiple mobile phone collides, namely when mobile phone 1 and SIM card are in the Session Time cycle, intelligent SIM card deck equipment receives the order from mobile phone 2.Intelligent SIM card deck equipment be not just directly this transferring order sent from mobile phone 2 to SIM card, but after waiting for the Session Time end cycle of SIM card and mobile phone 1, again the transferring order from mobile phone 2 to SIM card, and the reply data retransmission of SIM card to mobile phone 2.Because the Session Time cycle between mobile phone and SIM card is usually all very short, and mobile phone can wait for the time of the turnaround time of SIM card considerably beyond the Session Time cycle, so this wait can not have any impact to the communication between mobile phone 2 and SIM card.
In the communication process of mobile phone and SIM card, SIM card has a current state, such as, the current residing file directory in SIM card file system of SIM card, also comprises current the chosen file of SIM card (operation result of previous file select command 0xa4).Like this, between two mobile phones, the current state residing for SIM card is just likely different.Such as, when SIM card executes the file EF of mobile phone 1
iCCIDafter the select command of (document identification number 0x3fe2), SIM card is exactly select File EF relative to the current state of mobile phone 1
iCCID, also do not receiving the file reading EF of mobile phone 1
iCCIDdata before, SIM card receives the order of mobile phone 2, and this has become current select File (the such as select File EF of SIM card
pL, document identification number 0x3f05).In order to avoid this conflict, in intelligent SIM card deck equipment, just need preservation SIM card relative to the current state of each mobile phone, when the order of mobile phone to SIM card has current state dependence, just need to return to this state.Certainly, some order, such as select File from the master catalogue of SIM card file, does not rely on the current state of SIM card, just directly can be transmitted to SIM card, and the current state of unnecessary care SIM card.Or SIM card is still in the Continued communication state with same mobile phone, also can directly mobile phone transferring order to SIM card because SIM card does not change current state.That is, the current state maintenance mode of this SIM card, is equivalent in application layer, intelligent SIM card deck plant maintenance two logic channels, and each logic channel has an independently SIM card current state, corresponds respectively to mobile phone 1 and mobile phone 2.SIM card to the data recovery of the order of mobile phone 1 and mobile phone 2 separately independently different SIM card-like state carry out.When the logic channel that SIM card and different mobile phone carry out communicating switches, there is the Save and restore process of a current state.
Owing to likely having the file system of two different SIM application and USIM application in SIM card, the GSM network for 2G accesses and the access of 3G and 4G mobile communication business of UMTS network.When mobile phone 1 uses SIM application, mobile phone 2 uses USIM to apply, SIM card is just in different current states relative to these two mobile phones, because they use different SIM card file systems.When communication between SIM card and they switches, just need the Save and restore process of a SIM card current state.Such as, when SIM card terminates and the communicating of mobile phone 1, when needing to continue to communicate with mobile phone 2, the current state that the SIM just preserving SIM card and mobile phone 1 applies, after the communications status of the USIM application of recovery and mobile phone 2, then proceed the USIM application communication of SIM card and mobile phone 2.Equally, SIM card terminates and the communicating of mobile phone 2, when needing to continue to communicate with mobile phone 1, and the current state that the USIM just preserving SIM card and mobile phone 2 applies, after the communications status of the SIM application of recovery and mobile phone 1, then proceed the SIM application communication of SIM card and mobile phone 1.
Fig. 4 is that intelligent SIM card deck equipment receives from the process chart after the order of mobile phone 1, receives from the process chart of the order from mobile phone 2 also similar.When intelligent SIM card deck equipment receives after the order of mobile phone 1, first check SIM card whether with a Session Time cycle of mobile phone 2 in the middle of, if SIM card be with a Session Time cycle of mobile phone 2 in the middle of, after needing the Session Time end cycle waiting for that SIM card is current, then carry out checking whether the order of mobile phone 1 has the dependence of SIM card current state.When SIM card be not in mobile phone 2 Session Time cycle in the middle of and in command wait state time, the then previous order of intelligent SIM card deck equipment inspection SIM card process, it is whether the order from mobile phone 1, if, then SIM card does not change relative to the current state of mobile phone 1, and intelligent SIM card deck equipment is directly transmitted to SIM card the order of mobile phone 1.If the previous order of SIM card is not the order from mobile phone 1, then carry out checking whether the order from mobile phone 1 has the dependence of SIM card current state, if this order does not rely on SIM card current state, just this transferring order to SIM card.If rely on SIM card current state from the order of mobile phone 1, then need first to recover SIM card relatively and the current state of mobile phone 1, then this transferring order to SIM card.
Multiple mobile phone as above by wave point, shares the method for same SIM card accessing mobile communication network, is in all data exchange processes of mobile phone and SIM card, all uses the method for wireless forwarding to realize.And in fact, the most file datas stored in SIM card, can directly read out, and phase data content is all constant.Like this, in the middle of communication terminal interface equipment, just can preserve the backup copy of these SIM card file data.After communication terminal interface equipment receives the order of mobile phone, with regard to directly applying these Backup Datas, mobile phone command is replied, and need not be read from SIM card by wave point again, decrease the amount of communication data of communication terminal interface equipment and intelligent SIM card deck equipment.It is the file data for authenticating user identification and authentication, the specific implementation algorithm of such as authentication and authentication and for this algorithm input data and the secret key of authentication, can not be read by external equipment, can only be read by SIM card self in the inside of SIM card and run.So, these data can not preserve a backup in communication terminal interface equipment, can only when mobile communications network carries out authenticating user identification authentication at every turn, random data network being used for authentication is transferred to SIM card, and at SIM card internal operation authentication arithmetic, again operation result is returned to mobile communications network, the authentication authentication of completing user.
So, in the backup copy in communication terminal interface equipment with SIM card file data, in fact in the wireless communication link of communication terminal interface equipment and intelligent SIM card deck equipment, the data needing transmission are when carrying out authenticating user identification authentication to SIM card after mobile phone receives the authentication order of network, or when SIM application USIM application carries out authentication to network, just there is data wireless transmission between which.These orders are all comprise authentication order (0x88 or 0x89 initiated by mobile phone, and obtain the acquisition data command (0xc0 of authentication order operation result data authentication), get response), because these security sensitive data relevant with authenticating user identification authentication can only read in SIM card inside and run, and return the result of operation, and these security sensitive data itself can not be read.Further, if two mobile phones are all that application USIM applies and accessing mobile communication network, then the current state of SIM card relative to mobile phone 1 and the current state relative to mobile phone 2 are identical all the time, just do not need the Save and restore process of the current state of SIM card.SIM card is in the authentication coomand mode of wait-receiving mode mobile phone all the time, runs immediately and return operation result to mobile phone after receiving authentication order.Just need to keep consistency between the authentication order data and acquisition data command of different mobile phone, that is, the authentication order of mobile phone 1 has the authentication order operation result data of mobile phone 1, the authentication order of mobile phone 2 has the authentication order operation result data of mobile phone 2, does not obscure mutually just passable in the middle of them
Fig. 5 is that mobile phone 1 and mobile phone 2 are all respectively by the schematic flow sheet of SIM card accessing mobile communication network.In the communication terminal interface equipment of mobile phone 1 and mobile phone 2, save the backup copy of the file data of SIM card.When mobile phone 1 is started shooting, when request SIM card file data message is used for the access of mobile communications network, the communication terminal interface equipment of mobile phone 1 is just direct reads data from its backup copy, replies to mobile phone 1.Just do not need again by wave point, be transmitted to intelligent SIM card deck equipment, go to read these data messages from SIM card.When mobile phone receives the authenticating user identification authentication order (0x88 or 0x89) of mobile communications network and corresponding random number sequence, just by passing through wave point, be transmitted to intelligent SIM card deck equipment, and from SIM card, obtain the operation result data of authenticating user identification authentication order, by intelligent SIM card deck device forwards to the communication terminal interface equipment of mobile phone 1, network is being transmitted to, the authentication authentication order of completing user by mobile phone 1.
Mobile phone 1 completes the access procedure of mobile communications network, after being in holding state, according to communication protocol standard, needs periodically to check whether SIM card is still present in the SIM card slot of mobile phone.This checking process periodically sends status inquiry command (0xf2) to SIM card by mobile phone, and the correct reply that can receive SIM card has come.The status inquiry command receiving mobile phone 1 when the communication terminal interface equipment of mobile phone 1 is, just directly replys an operation and successfully replys data (0x90,0x0).Like this, mobile phone 1 just thinks that its SIM card is still present in its slot, for correct running status.
When mobile phone 1 is in holding state, after the regular hour, or initiate calling network, or when receiving the calling of network, or the switching through network cell and need to carry out location updating, according to mobile communication protocol, all needs to carry out authentication authentication to user.This time, authentication authorizing procedure is carried out with regard to the user repeated in mobile phone 1 accessing mobile communication network process as above, forwarded by the communication terminal interface equipment of mobile phone 1 and the radio interface communication of intelligent SIM card deck equipment, allow SIM card run authentication order and obtain the operation result data of order, completing user carries out authentication authentication.
By same process, mobile phone 2 completes start, network insertion, and authenticating user identification authentication process, enters holding state.The status inquiry command of answering mobile phone 2 similarly, namely the communication terminal interface equipment of mobile phone 2 is directly replied operation and is successfully replied data (0x90,0x0).
Fig. 5 is the schematic flow sheet of a mobile phone 1 and mobile phone 2, the command interaction of two mobile phones and respective communication terminal interface equipment and and the command interaction of intelligent SIM card deck equipment be separate, dependence not free each other.Obtain order in authentication order and authorization data subsequently especially to link together, the authentication order data of two mobile phones is independent of each other, for respective authentication authentication, can not be crossed one another use, because each authentication order has a random number sequence independent of each other.
Be stored in the backup copy of the SIM card file data in communication terminal interface equipment, can be stored in (such as data random asccess memory in the internal memory of communication terminal interface equipment, RAM), such mobile phone shutdown and after the power down of communication terminal interface equipment, its data just disappear.When mobile phone power-on next time, just need again from SIM, to obtain these file datas.This can when mobile phone power-on accessing mobile communication network, by the wireless interface Link between communication terminal interface equipment and intelligent SIM card deck equipment, obtain from SIM card, and in the internal memory of its communication terminal interface equipment, preserve a backup copy, in order to reusing simultaneously.So, when communication terminal interface equipment receives the order come from mobile phone after at every turn, first check within it depositing and whether have data to use, if there are data, by its data, mobile phone is replied with regard to direct.If there is no data in depositing within it, just again by wave point, from SIM card, obtain data opponent machine reply, and in internal memory, preserve a backup copy in order to reusing simultaneously.
The backup copy of these SIM card file data also can be kept in the memory of non-volatile (erasable rewriting) of communication terminal interface equipment, such as, for depositing the flash memory (flash memory) of working procedure.Like this, after the backup copy of these SIM card data completes, be just stored in communication terminal interface equipment weight always, the backup copy of SIM card file data can not be lost because of its power down.In each mobile phone power-on process afterwards, data are read from its flash memory with regard to direct, just authentication order and its authenticating result data retrieval commands subsequently are just needed, by the wireless interface Link between communication terminal interface equipment and intelligent SIM card deck equipment, to obtain from SIM card.
When two mobile phones are by sharing same SIM card accessing mobile communication network, when being in holding state, In the view of user simultaneously, just look like be two independently mobile phones, can separately use.But at SIM card and mobile communications network, in fact just time division multiplexing (TDMA) between two mobile phones, only this time division multiplexing is transparent concerning user, and user can not aware it to be existed.User can apply any one mobile phone and initiate calling network, completes Mobile Communication Service.As calling network user, only have one of them mobile phone called, this depends on it is which mobile phone is finally run the order of authentication authentication, and its temporarily moved subscriber identifier (TMSI) and the network site residing for it are registered in network.Because the wave point between communication terminal interface equipment and intelligent SIM card deck equipment is short-range communication, so mobile phone is all in short-range scope, user with the calling of crossing any one mobile phone reception network, can not miss the calling of other users to it.
When mobile phone 2 is still in holding state, after mobile phone 1 shuts down, according to mobile communication protocol, in the shutdown process of mobile phone 1, its off-mode is registered in mobile communications network, this user of network identity is off-mode.If the network authentication order of the last time before shutdown is completed by mobile phone 1, when being called out by other users, can receive network prompts, this user shuts down.Because at network, current active user is mobile phone 1.And in fact, mobile phone 2 is still in holding state, only network is not known.In this time, just need mobile phone 2 to carry out the order of one-time identity authentication authentication, it is registered in network, the calling of other users can be received.This process can be the Active Networks calling of a mobile phone, also can be primary network access, or the renewal of the network site of a mobile phone, just it can be registered in mobile communications network.If the network authentication order of the last time before mobile phone 1 shuts down is completed by mobile phone 2, then the calling of other users is received without any impact to this user.Because at network, current active user is mobile phone 2.
In order to avoid this nondeterministic statement, make user can both receive the calling of other users all the time, in the process that mobile phone 1 shuts down, by its communication terminal interface equipment, notify intelligent SIM card deck equipment, mobile phone 1 is in off-mode.When intelligent SIM card deck equipment receives the off-mode message of mobile phone 1, just by wave point, the communication terminal interface equipment of notice mobile phone 2, makes mobile phone 2 carry out the order of one-time identity authentication authentication on one's own initiative, it is registered in network.Or the equipment Inspection of intelligent SIM card deck is be in off-state to itself and the wireless link of the communication terminal interface equipment of mobile phone 1, just notify the communication terminal interface equipment of mobile phone 2 on one's own initiative, make mobile phone 2 carry out the order of one-time identity authentication authentication on one's own initiative, it is registered in network.
If mobile phone 2 does not initiatively initiate authentication order, (the last network registry time of mobile phone 2 is depended on through after the regular hour, by network operation time counter), network will paging mobile phone 2, complete authentication order, upgrade positional information and temporarily moved subscriber identifier (TMSI).Like this, mobile phone 2 is just registered in network, and this user of network designation is open state.Or mobile phone 2 also can complete authentication order to automatically upgrade its state, is registered in network.So, this user just can receive the calling of other users.The mobile phone 2 only completed in this way is registered to the process in network, after shutting down with mobile phone 1 before this during this period of time, In the view of user, can the calling that receive other users be uncertain, depends on it is which mobile phone finally completed authentication order before mobile phone 1 shuts down.
Fig. 6 is that mobile phone 2 initiatively runs the schematic flow sheet of an authentication order as above after mobile phone 1 shuts down.First, mobile phone 1 shuts down, and notifies mobile communications network, and network marks the user as off-mode.Meanwhile, the communication terminal interface equipment of mobile phone 1 notifies intelligent SIM card deck equipment, and it is in off-mode.After intelligent SIM card deck equipment is notified, just send message to the communication terminal interface equipment of mobile phone 2.Like this, mobile phone 2 just initiatively runs an authentication order, as re-registered mobile communications network etc.After completing the order of common authenticating user identification authentication, mobile phone 2 is registered to network, and network marks the user as open state, can receive the calling of other users.Used time, mobile phone 2 is in holding state, also can receive the active call of user.
Fig. 7 is when the equipment Inspection of intelligent SIM card deck is when being in off-state to the wireless link of the communication terminal interface equipment of itself and mobile phone 1, the communication terminal interface equipment of notice mobile phone 2, make mobile phone 2 carry out the order of one-time identity authentication authentication on one's own initiative, it is registered in network.
The effect of invention
The present invention passes through the radio interface communication link of communication terminal interface equipment and intelligent SIM card deck equipment, makes multiple communication terminal can be inserted in SIM card in intelligent SIM card deck equipment by same, is linked in mobile communications network.In the actual use of user, just can the arbitrary communication terminal device of choice for use, such as, the watch type mobile telephone of Wearable can be used, also the smart mobile phone of large-screen can be used, even can also use panel computer and notebook computer, as long as they have the access function of mobile communications network.Like this, user selects in the use of personal communications terminal equipment, just convenient freedom.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the communication terminal interface equipment with radio communication function.This equipment has shape and the size of SIM card, and directly inserting in the SIM card slot of mobile phone, also can be shape and the size with drawer type SIM card holder, inserts in the side slot of mobile phone, directly obtains power supply supply from the SIM card interface of mobile phone.
Fig. 2 is the wave points of two mobile phones by respective communication terminal interface equipment, is connected in intelligent SIM card deck equipment, and sets up the structural representation of communication link with the SIM card be inserted in wherein.
Fig. 3 is the schematic flow sheet of two mobile phones difference accessing mobile communication networks.The flow process of two mobile phone access networks is separate, the relation depending therefrom on not free.
Fig. 4 is that intelligent SIM card deck equipment receives from the process chart after the order of mobile phone 1.Mainly safeguarding two different logic channels in application layer, for communicating with mobile phone 1 and mobile phone 2, the message between them not being interfered with each other.
Fig. 5 is that mobile phone 1 and mobile phone 2 are all respectively by the schematic flow sheet of SIM card accessing mobile communication network.In the communication terminal interface equipment of mobile phone 1 and mobile phone 2, save the backup copy of the file data of SIM card.Only when mobile phone runs authentication order, just by wave point, communicate with intelligent SIM card deck equipment, and then communicate with the SIM card inserted wherein again.
Fig. 6 is that mobile phone 2 initiatively runs the schematic flow sheet of an authentication order after mobile phone 1 shuts down.After the order of completing user authentication authentication, mobile phone 2 is registered to network, and network marks the user as open state, can receive the calling of other users.
Fig. 7 is that mobile phone 2 initiatively runs the schematic flow sheet of an authentication order when the equipment Inspection of intelligent SIM card deck is when being in off-state to the wireless link of the communication terminal interface equipment of itself and mobile phone 1.After the order of completing user authentication authentication, mobile phone 2 is registered to network, and network marks the user as open state, can receive the calling of other users.
Embodiment
For communication terminal interface equipment of the present invention, its main functional realiey is open in Chinese invention application 201410735422.3 " terminal interface device of a kind of communication terminal and SIM card Wireless Data Transmission ".In the present invention, be mainly applied in multiple mobile phone, serve as a Full Featured SIM cards of mobile phones, carry out concrete hardware and software feature and strengthen.For intelligent SIM card deck equipment of the present invention, corresponding explanation is being had in Chinese invention application 201410452312.6 " a kind of separate type SIM card deck equipment of intelligence and communication means ", its wave point is mainly applied in the present invention, for multiple mobile phone carry out connecting time, carry out corresponding software function enhancing.Come further that the present invention will be described below for communication terminal interface equipment and intelligent SIM card deck equipment embodiment.
Examples of implementation 1
The present embodiment is the specific implementation of communication terminal interface equipment, and the Master control chip selected is the bluetooth SOC (system on a chip) (SoC of Nordic company of Norway.System on chip) chip nRF51822-CEAA.
The concrete physical parameter relevant to the present embodiment of chip nRF51822-CEAA is:
1) physical size: 3.83mm*3.5mm*0.5mm
2) wireless transmission: the 2.4G radio communication of multi-protocols, comprises bluetooth 4.0 agreement of proprietary host-host protocol and standard, and user also can realize oneself application communication agreement.
3) ARM Cortex M0 32 8-digit microcontroller.
4) 256K flash memory, 16K internal memory.
5) voltage supply requires: 1.8V-3.6V.
6) peak-current consumption: wireless receiving 13mA.
7) 31 can the digital universal input and output GPIO interface of flexible configuration.
According to the functional requirement of communication terminal interface equipment, the performance parameter that application nRF51822-CEAA chip provides, add some simple hardware circuits, in conjunction with the realization of some concrete software function modules, just can realize communication terminal interface equipment of the present invention.Become the substitute of a SIM card, directly insert the SIM card slot of mobile phone, complete the function of SIM card.Be described in detail with regard to each specific embodiment party face below:
1) physics size.The SIM card of standard has the thickness of 0.8mm-0.9mm, and in the SIM card slot of mobile phone, its spring contact has certain elasticity, so the thickness of SIM card can have certain flexible scope.Chip nRF51822-CEAA thickness is 0.5mm, adds the thickness of circuit board in addition, and its thickness can insert SIM card slot completely.The size of the SIM card of standard is 25mm*15mm, although its area of nanoSIM card reduces greatly, general n anoSIM card is all with a drawer type SIM card holder, and insert in the side slot of mobile phone, its total size is generally 20mm*11mm.And the area of chip nRF51822-CEAA is only 3.83mm*3.5mm, be far smaller than the area space of SIM cards of mobile phones slot.Add that the circuit components of some necessity is as crystal oscillator, electric capacity etc., its wireless communication module finally completed, just can become shape and the size of a SIM card, insert in the SIM card slot of mobile phone.
2) wireless transmission.In chip nRF51822-CEAA, can the Bluetooth communication protocol of operation standard, for communication terminal interface equipment provides wave point.Also can apply its wireless application DLL (dynamic link library), realize special wireless transmission protocol, for the transfer of data of SIM provides optimization.
3) microcontroller.ARM Cortex M0 32 8-digit microcontroller of chip nRF51822-CEAA can as the central processing unit of communication terminal interface equipment (CPU), run the handling procedure of SIM card simulation, make at mobile phone, the real SIM card of itself and is without any difference.The handling procedure of this SIM card simulation comprises the physical layer of smart card transport protocol standard ISO-7816, transport layer, the concrete protocol stack of protocol layer realizes, also SIM is comprised, application layer standard ETSI TS 102 221, ETSI TS102 223, the 3GPP TS 31.102 of USIM, the software function of the standards such as 3GPP TS 51.011,3GPP TS 31.11 realizes.Central processing unit also controls the time division multiplexing of the transmission channel of physics, safeguards multiple logic channel, for each mobile phone provides the line control of communication of its access SIM.The function of central processing unit also comprises transmission and the reception of wirelessly transmitting data, and the running status of monitoring and mobile phone SIM interface, and restart routine is run if desired.
4) data store.Chip nRF51822-CEAA is integrated with the flash memory of 256K, except the handling procedure of storage running SIM card simulation and the wireless transmission of data control, has enough memory spaces, preserves the full backup copy of SIM card file data.Like this, authentication order is only had and outside and then operation result data retrieval commands thereafter needs to obtain by the mode of radio communication, other all data can read in the flash memory of this locality.NRF51822-CEAA is integrated with the internal memory of 16K in addition, except the internal memory needed for program is run, most of file datas of SIM card (the user short message content larger except data volume and address list except), can preserve a backup copy in internal memory.Like this, even if flash memory does not have the backup copy of SIM card file data, the volume of transmitted data of wave point also can be reduced widely.
5) voltage supply.The SIM card interface of mobile phone standard provides the supply power voltage of 1.8V and 3.0V, and the operating voltage required for chip nRF51822-CEAA runs is 1.8V-3.6V, directly can obtain power supply from the SIM card interface of mobile phone completely, not need other power supply method of supplying.
6) electric current supply.The SIM card interface of mobile phone standard provides the peak value supply current up to 50mA, peak current required for chip nRF51822-CEAA runs is wireless receiving 13mA, directly can obtain electric current supply from the SIM card interface of mobile phone completely, not need other power supply method of supplying.
7) digital interface.Chip nRF51822-CEAA provides up to 31 can the digital universal input and output GPIO interface of flexible configuration, at the SIM card interface of mobile phone standard, only need 3 interfaces, comprise data-interface (IO), replacement interface (RST) and clock interface (CLK) just can carry out exchanges data.Because the program voltage interface (VPP) of present SIM card does not re-use, so just can not need interface.Any 3 GPIO mouths of chip nRF51822-CEAA can be selected to be connected with the SIM card interface of mobile phone.
By using chip nRF51822-CEAA, in conjunction with some hardware circuits and software function module, communication terminal interface equipment of the present invention just can be easy to obtain specific embodiment.
Examples of implementation 2
The present embodiment is the embodiment of intelligent SIM card deck equipment.
Intelligent SIM card deck equipment can have the access function of mobile communications network, when SIM card is inserted wherein, the authenticating user identification authentication information of this SIM card just can be used, accessing mobile communication network, become a complete mobile subscriber equipment, for user provides Mobile Communication Service.Can also be called the watch type mobile telephone of wearable device, and user coexists whenever and wherever possible.In addition, intelligent SIM card deck equipment also has wave point, makes other mobile phone can access SIM card by communication terminal interface equipment.
The intelligent SIM card deck equipment of watch type mobile telephone in the functional module of its software, can increase different logic channels in application layer, makes to realize time division multiplexing to the access of SIM card.A logic channel is supplied to intelligent SIM card deck equipment self and uses, for it with accessing mobile communication network.Other logic channel for wave point, to set up wireless connections with the communication terminal interface equipment of other mobile phone.These logic channels share a physical channel, the i.e. intelligent card interface (the SIM card slot of intelligent SIM card deck equipment) of contact, by ISO-7816 host-host protocol swap data in physical layer.
By the present embodiment, SIM accessing mobile communication network shared by multiple mobile phone is not only just only by wave point, but mixing that is wireless and wireline interface shares.Although only have a physical channel on Floor layer Technology, can on the functional realiey of software, the same physical channel of multiple logic channel time division multiplexinges, for multiple mobile phone.
Claims (10)
1., for the method and system of multiple communication terminal by same SIM accessing mobile communication network, it is characterized in that, described system comprises:
1) two or more communication terminal, has the access function of cellular mobile communications network
2) communication terminal interface equipment, has shape and the size of SIM card, is inserted in the SIM card slot of each communication terminal,
3) intelligent SIM card deck equipment, in SIM card slot wherein, is inserted with SIM card, for the authentication authentication of accessing mobile communication network for users,
4) between communication terminal interface equipment and intelligent SIM card deck equipment, there is short-range wireless communication interface, make communication terminal can by the forwarding of described wireless communication interface to the order data of SIM card, be transferred to SIM card, also SIM card can be replied the forwarding of data by described wireless communication interface to the response of order, reply to communication terminal, the transmission error of this data retransmission and propagation time delay are all in the prescribed limit of ISO-7816 standard, this forwarding is made to communicate concerning communication terminal and SIM card both sides, all transparent, can not be awared it exist.
2., according to communication terminal interface equipment as claimed in claim 1, it is characterized in that:
1) there is SIM card shape and the size of standard, can insert in the SIM card slot of communication terminal standard,
2) or have shape and the size of drawer type SIM card Kato, Kato is not used just directly to insert in the SIM card slot of mobile phone side,
3) at the SIM card contact position of standard, there is corresponding contact, be connected to the internal circuit of described communication terminal interface equipment, and after the SIM card slot inserting communication terminal, be connected with the contact spring sheet of the SIM card interface of communication terminal, set up and be connected with communication terminal circuit
4) when the SIM card interface of communication terminal is powered, the power supply supply required for the communication terminal interface equipment that can obtain described in it runs,
5) its three data-interfaces are connected to the data-interface (IO) of the SIM card interface of communication terminal, reset interface (RST) and clock interface (CLK).
3. according to intelligent SIM card deck equipment as claimed in claim 1, it is characterized in that, its short-range wireless communication interface has the communication function of point-to-multipoint, can simultaneously wireless connections in multiple communication terminal interface equipment as claimed in claim 1, described intelligent SIM card deck equipment has a functional module, the function of this functional module is set up and safeguard multiple logic channel, each logic channel uses different time segments, communicate with SIM card independently of one another, different logical channel assignment uses to different communication terminal interface equipments as claimed in claim 1, make multiple communication terminal can set up communication link with SIM card to time division multiplexing.
4. according to foundation and the maintaining method of multiple logic channel in intelligent SIM card deck equipment as claimed in claim 3, it is characterized in that, realized by method as described below and flow process:
1) plant maintenance of intelligent SIM card deck is relative to the SIM card current state of each communication terminal interface equipment, the application that these information comprise the operation of SIM card is SIM application or USIM application, current selected file or directory name, to the whether existing dependence of previous order
2) when intelligent SIM card deck equipment needs the communication session be switched to from the communication session with a communication terminal interface equipment with another one communication terminal interface equipment, first the SIM card current state of communication session is preserved, and the current state of the SIM card of recovery and another one communication terminal interface equipment, carry out communication session switching again
3) intelligent SIM card deck equipment switches the order Session Time cycle that the minimum time unit of communication session is communication terminal, when two different order Session Time cycles collide, the order of rear arrival needs to wait for, until current order Session Time period treatment terminates
4) after intelligent SIM card deck equipment receives the order of communication terminal, before being transmitted to SIM card, need to check whether SIM card is carrying out in the middle of the Dialog processing of another one order, also need to check whether this order received has the dependence of SIM card current state and the dependence to previous order operation result, only have when these all check results be identified errorless after, then forward this order to SIM card.
5., according to communication terminal interface equipment as claimed in claim 1, it is characterized in that:
1) in the non-volatile data storage module of described communication terminal interface equipment inside, preserve the backup copy of SIM card file data, these data files comprise those all data files that can be read by a user, and also comprise the data file that those need user cipher to read
2) when described communication terminal interface equipment receives after communication terminal sends to the order of SIM card, first check whether this order is authentication order or follows authentication order data retrieval commands below closely, if not, then read from its data memory module and data are replied to the response of this order, directly reply to communication terminal
3) if the order that described communication terminal interface equipment receives is authentication order or follows authentication order data retrieval commands below closely, then pass through short-range wireless communication interface as defined in claim 1, forward this order to intelligent SIM card deck equipment as defined in claim 1
4) be in authentication order as defined in claim 1 in intelligent SIM card deck equipment all the time and receive wait state, when after the input random data sequence receiving authentication order and authentication order, be transmitted to SIM card immediately, SIM card is also in authentication order all the time and receives wait state, when receiving after the authentication order of intelligent SIM card deck device forwards and the input random data sequence of authentication order, just in the order of SIM card internal operation authentication, and the response data of operation result is replied to intelligent SIM card deck equipment, pass through short-range wireless communication interface as defined in claim 1 again, transmitted response data are to communication terminal interface equipment, finally be transmitted to communication terminal.
6. according to communication terminal interface equipment as claimed in claim 1, it is characterized in that, when communication terminal is in holding state, when receiving the status inquiry command of communication terminal, directly reply one and run successful data of replying to communication terminal.
7. according to communication terminal as claimed in claim 1, it is characterized in that, described communication terminal carries out the order of one-time identity authentication authentication on one's own initiative, and it is registered in mobile communications network, is complete as follows:
1) described communication terminal and another one communication terminal are linked in mobile communications network by the authentication order of same SIM card, and when being in holding state, another one communication terminal shuts down simultaneously,
2) described another one communication terminal is in shutdown process, by its communication terminal interface equipment, its off-mode message is sent to intelligent SIM card deck equipment, and described shutdown message is transferred to the communication terminal interface equipment of described communication terminal by intelligent SIM card deck equipment again
3), after described communication terminal receives message, carry out the order of one-time identity authentication authentication on one's own initiative, it is registered in mobile communications network.
8. according to communication terminal as claimed in claim 1, it is characterized in that, described communication terminal carries out the order of one-time identity authentication authentication on one's own initiative, and it is registered in mobile communications network, is complete as follows:
1) described communication terminal and another one communication terminal are linked in mobile communications network by the authentication order of same SIM card, and when being in holding state, another one communication terminal shuts down simultaneously,
2) intelligent SIM card deck as claimed in claim 1 equipment Inspection is in off-state to itself and the short-distance wireless communication of described another one communication terminal, just this message is sent to the communication terminal interface equipment of described communication terminal,
3), after described communication terminal receives message, carry out the order of one-time identity authentication authentication on one's own initiative, it is registered in mobile communications network.
9. according to communication terminal interface equipment as claimed in claim 1, it is characterized in that, its main functional module is the SOC (system on a chip) (SoC of a short-distance wireless communication, System on Chip) chip, comprise microcontroller (MCU), memory modules (RAM), non-volatile data storage module (flash), add that some simple electronic devices and components are connected with circuit, just can form a complete hardware device, after the program that its non-volatile data storage module write microcontroller runs, just can realize all functions of communication terminal interface equipment.
10., according to intelligent SIM card deck equipment as claimed in claim 1, it is characterized in that:
1) the intelligent SIM card deck equipment described in also has the function of accessing mobile communication network, and by being inserted in SIM card wherein, completing user authentication authentication, becomes complete mobile subscriber equipment, independently for user provides Mobile Communication Service,
2) the also tool software function module of the intelligent SIM card deck equipment described in, can set up and safeguard multiple logic channel, one of them logic channel sets up wired communication link for himself and SIM card, other logic channel is supplied to short-range wireless communication interface as defined in claim 1 and uses, the wireless communication link with SIM card can be set up
3) logic channel of multiple wired and wireless mixing is on the physical technique of bottom, what time-slotting broke uses described intelligent SIM card deck equipment and the contact interface of SIM card in turn, and the poll stand-by period of each logic channel is less than the smart card transmission maximum latency of ISO-7816 standard.
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| CN201510056027.7A CN104618887A (en) | 2015-02-04 | 2015-02-04 | Method and device for wirelessly sharing SIM card by multiple communication terminals |
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