CN101039480A - Method for accessing quickly USIM card basic document of user terminal - Google Patents
Method for accessing quickly USIM card basic document of user terminal Download PDFInfo
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- CN101039480A CN101039480A CNA2007100783815A CN200710078381A CN101039480A CN 101039480 A CN101039480 A CN 101039480A CN A2007100783815 A CNA2007100783815 A CN A2007100783815A CN 200710078381 A CN200710078381 A CN 200710078381A CN 101039480 A CN101039480 A CN 101039480A
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Abstract
The inventive method only reads once of the accessing conditions contained in the EFarr document under different directories, and stores it in the corresponding accessing condition buffer zone when it reads the accessing condition for the first time, thus avoiding the repeat read to a same record, to quicken the document accessing pace. When it is needed to visit an EF document, firstly the accessing sign in thecorresponding accessing condition buffer zone is read based on the buffer zone directory document sign of the EF document and the EFarr recording index, and judges: if the accessing condition of the EF document, the EF document is accessed based on the accessing condition; if it has not been stored, it indicates that it is the first time to access the EF document, so that it is required to mark and record the indexing information based on the EFarr document of the EF, read the accessing condition of the EF document, and stores it in the corresponding accessing condition buffer zone, and then accessing the EF document based on the accessing condition. Along with the increase of the visited EF documents, the accessing conditions stored in the accessing condition buffer zone are gradually increasing.
Description
Technical field
The present invention relates to the quick access method of the middle constituent instruments of user terminal common user identification card (abbreviating usim card as) in the third generation wirelessmobile communication system.
Background technology
File is the basic element that constitutes usim card, and the file in the usim card mainly is divided into private file (abbreviating the DF file as) and constituent instruments (abbreviating the EF file as), and the use tree is classified to file and managed.The EF file generally is positioned on tree " leaf " node, and the DF file generally is the root of EF or DF file, and the total root file in the usim card is called master file (abbreviating the MF file as).Each file in the usim card all has a file identification to be used to distinguish the different files under the same catalogue.Yet the file under the different directories may have identical file identification, at this moment, adopt catalogue file sign and this document to identify to make its with another catalogue under have an identical file identification file distinguish.
For adapting to some specific application, in usim card, also include a kind of special DF file---use DF file (Application DF, abbreviate the ADF file as), each ADF file is exclusively used in certain specific application (as mobile communication, Web bank, mobile speculation in stocks etc.), and can have a plurality of ADF files simultaneously in same usim card.TELECOM file (comprising the TELECOM catalogue) is the another kind of special DF file that comprises in the usim card, mainly is to have inherited the relevant information in the user terminal Subscriber Identity Module (abbreviating SIM card as) in the second generation wirelessmobile communication system.Tree between MF file, TELECOM file, ADF file, DF file and the EF file is referring to Fig. 1.Be convenient statement, below catalogue file MF, TELECOM and ADF be called MF catalogue, TELECOM catalogue and ADF catalogue.
Usually, the various operations that user terminal is carried out the EF file in the usim card (as read, upgrade, increase etc.) are called the visit to this EF file.For guaranteeing the safe, reliable and stable of file in the usim card, different grades and condition have been stipulated in the visit of EF file in the usim card.The access level of EF file has following several usually in the usim card: 1) random access, 2) PIN1 sign indicating number authentication-access, 3) PIN2 sign indicating number authentication-access, 4) only usim card manufacturer visit, 5) can visit never.Can be accessed different with the EF file, can only carry out selection operation the catalogue file in the usim card (as MF, ADF, DF file).When the EF file is conducted interviews, generally all at first select its affiliated catalogue file, and then select this EF file, carry out visit at last to this EF file.
MF catalogue, TELECOM catalogue and each ADF catalogue all include constituent instruments ARR (the Access Rule Reference of a special record type respectively, abbreviate the EFarr file as), this document has been stipulated under MF catalogue, the TELECOM catalogue or the access consideration of all EF files under the same ADF catalogue.Each EFarr file is made up of many records, and the access consideration of corresponding EF file described in every record (abbreviating the EFarr record as), and the EFarr under the same catalogue writes down described access consideration and goes for a plurality of different EF files under this catalogue.
Usually, when the EF file is conducted interviews, select this EF file by the file selection instruction (abbreviating the SELECT instruction as) that requires backspace file Control Parameter (File ControlParameters abbreviates the FCP parameter as), to determine access object.The FCP parameter of returning generally comprises file identification, file size, security attribute information such as (comprising EFarr file identification and EFarr recording indexes information etc.), and for the EF file of record type, the FCP parameter also can comprise information such as record length, record number.By analyzing the security attribute information of FCP parameter, (this sign is used to distinguish different files can to obtain the pairing EFarr file identification of this document, as the EFarr file identification under the MF catalogue is " 2F06 ", EFarr file identification under ADF catalogue and the TELECOM catalogue is " 6F06 ", and the EFarr file under the different ADF catalogue has identical file identification.Accessed EF file necessarily is under the jurisdiction of identical MF, TELECOM or ADF catalogue with this EFarr file) and the EFarr recording indexes.After obtaining EFarr file identification and EFarr recording indexes, promptly can read the EFarr record in the EFarr file, and by reading the access consideration that the EFarr record promptly can obtain this EF file.
Describe according to 3GPP agreement TS31.101 (being ETSI TS102 221) and TS31.102, the main process of usim card operation is divided into 3 processes such as initialization, session and conversation end.Wherein, the usim card initialization procedure comprises two subprocess again: the one, and the application choice process, i.e. after usim card activates (as the power-on start), the ADF catalogue of MF catalogue and current application must successively be selected, with the root of determining the subsequent file visit and (or) parent directory; The one, the file initialization procedure promptly needs to obtain the relevant key message of some start process, as emergency numbers, traffic table, IMSI International Mobile Subscriber Identity (abbreviating IMSI as) etc. from usim card.In each usim card running or subprocess, can the EF file under the current directory be conducted interviews.
The step of prior art EF file access comprises:
Step 1: the access request that receives a certain EF file;
Step 2: use this EF file of SELECT Instruction Selection, and obtain the FCP parameter of this document;
Step 3: resolve the FCP parameter, obtain corresponding EFarr file identification and recording indexes;
Step 4:, use the corresponding EFarr file of SELECT Instruction Selection according to the EFarr file identification that obtains;
Step 5: according to the EFarr recording indexes of obtaining, read the EFarr file logging of this EF file, obtain the access consideration information of this EF file;
Step 6: this EF file is conducted interviews according to access consideration.
From the aforesaid operations step as can be seen, prior art or when same EF file carried out repeated accesses, all needs earlier relevant EFarr file to be read, to obtain access consideration when different EF files are conducted interviews.Write down described access consideration (this moment, the EFarr file identification of different EF files was identical with the EFarr recording indexes) because different EF files may be shared same EFarr, and the access consideration of same EF file remains unchanged in usim card.This shows, prior art repeatedly reads same record of same EFarr file, one side makes the accessing step of file complicated, the response time is long, when especially similar operations occurs in the application choice subprocess of initialization procedure of usim card, the key message that will cause needing to obtain rapidly after some starts can not obtain fast, has prolonged start process; Take the mode that repeats to read of machinery on the other hand, make the described access consideration information of the EFarr file logging that has read not obtain effectively, utilize fully.
Summary of the invention
In order to overcome the above-mentioned deficiency of prior art, the present invention proposes the quick access method of EF file in a kind of user terminal usim card, this method can be simplified EF file access step, shorten the time that EF file access is consumed, and after start, can obtain some relevant key messages of start process fast.
The inventive method is provided with the access consideration of access consideration buffer area storage EF file, and each access consideration buffer area is provided with access identities, when visit EF file, read the access identities of the pairing access consideration buffer area of this EF file and judge according to the relevant information of this EF file, if showing, access identities stores access consideration, then this EF file is conducted interviews according to this condition, otherwise, read the EFarr file of this EF file correspondence, and the access consideration that the EFarr file is comprised is stored in the corresponding access consideration buffer area, according to access consideration this EF file is conducted interviews again at last.
The quantity of the inventive method static access condition buffer area can be determined by following formula:
In the formula: m represents the quantity of access consideration buffer area;
I represents the index value of the application ADF catalogue that usim card is supported;
N represents the application ADF catalogue quantity of the maximum that usim card is supported;
Ki represents the maximum EFarr record number that the EFarr file comprises in i the ADF catalogue;
J represents the dominant record number of the EFarr file that comprises in the MF catalogue.
N represents the dominant record number of the EFarr file that comprises in the TELECOM catalogue.
The setting of the inventive method access consideration buffer area both can realize by static mode, also can realize by dynamical fashion.
The so-called static static storage array that is meant that just application equates with access consideration buffer area quantity m in internal memory before access consideration obtains that is provided with, a static storage array is the access consideration buffer area of one or more EF files, and actually occupies corresponding internal memory physical space.File identification according to ADF, TELECOM or MF catalogue (is convenient statement, hereinafter referred to as buffer area catalogue file sign) and the EFarr recording indexes m access consideration buffer area distributed, make that each buffer area catalogue file sign and EFarr recording indexes can unique corresponding access consideration buffer areas, and can read the information of the access consideration buffer area of correspondence by buffer area catalogue file sign and EFarr recording indexes.
What is called dynamically arranges and is meant and obtains behind the access consideration and when needing to preserve, a storage of application array in internal memory, and actually occupy corresponding internal memory physical space.When this access consideration of storage, according to sign of the buffer area catalogue file under this EF file and EFarr recording indexes the access consideration buffer area of storing this access consideration is carried out mark simultaneously, make it can read the information of this access consideration buffer area by buffer area catalogue file sign and EFarr recording indexes.
Because the actual dominant record number that comprises of EFarr file under MF catalogue, TELECOM catalogue and the ADF catalogue of different usim cards (corresponding j value and ki value respectively) is unfixed, so the quantity m of access consideration buffer area also is unfixed.When adopting static mode to realize, need determine the m value according to aforementioned manner, or be arranged to enough big value.Obviously, with respect to static mode, dynamical fashion is wanted the save memory space relatively.
The size of each access consideration buffer area of the inventive method can be determined according to the size of EFarr record, be no more than 255 bytes usually.
Each access consideration buffer area of the inventive method all is provided with an access identities and shows whether this buffer area has stored corresponding access consideration, when this buffer area has been stored the access consideration of corresponding one or more files, this access identities is changed to " storing ", otherwise, be changed to " not storage ".
The inventive method is searched the access consideration buffer area according to buffer area catalogue file sign and EFarr recording indexes and is mated, when visit EF file, at first determine buffer area catalogue file sign, determine the EFarr recording indexes by the FCP parameter of resolving this EF file according to catalogue under this EF file; Corresponding informance with buffer area catalogue file sign and these two the already present all-access condition of information of same buffer areas of EFarr recording indexes compares one by one then, when the corresponding informance of these two a certain access consideration buffer areas of information of same was identical, then this access consideration buffer area was the access consideration buffer area of this EF file.
The inventive method only reads once the access consideration that the EFarr file under the different directories is comprised, and when reading this access consideration first, be stored in the corresponding access consideration buffer area, avoided to same record repeat read, file access is speeded up.When needs visit EF file, elder generation reads the access identities and the judgement of corresponding access consideration buffer area according to sign of the buffer area catalogue file under this EF file and EFarr recording indexes, if the access consideration of this EF file is stored, then the EF file is conducted interviews according to this access consideration; If be not stored, then show it is to visit this EF file for the first time, need EFarr file identification and recording indexes information, read the access consideration of this EF file and it is deposited in the corresponding access consideration buffer area, according to access consideration this EF file is conducted interviews again according to this EF.Along with increasing of accessed EF file, the access consideration of storing in the access consideration buffer area also increases gradually.
Description of drawings:
Fig. 1: file tree schematic diagram in the usim card;
Fig. 2: the flow chart that prior art conducts interviews to the EF file;
Fig. 3: the inventive method is used the flow chart of static access condition buffer area to EF file access.
Below in conjunction with drawings and the specific embodiments access method of the present invention is further described.
Fig. 1 is a file tree schematic diagram in the usim card.As seen from the figure, the MF file is total root of All Files, also is the parent directory of EFarr0, EF1, EF2, EF3 file; ADF1 is the parent directory of EFarr1, EF11, EF12, DF0, DF1 file, and DF0, DF1 are respectively the parent directories of EF101, EF111 file; ADF2 is the parent directory of EFarr2, EF21, EF22, DF2 file, and DF2 is the parent directory of EF221 file, and TELECOM is the parent directory of EFarr3, EF31 file.Because the EFarr file belongs to different catalogues, so the access consideration that comprises of EFarr0 file is only applicable to the visit of EF1, EF2, EF3 file; The access consideration that the EFarr1 file comprises is only applicable to the visit of EF11, EF12, EF101 and EF111 file; The access consideration that the EFarr2 file comprises is only applicable to the visit of EF21, EF22 and EF221 file; The access consideration that the EFarr3 file comprises is only applicable to the visit of EF31 file.
Of particular note, just simply described out the tree between MF file, TELECOM file, ADF file, DF file and the EF file in the usim card among the figure, it is complicated that the relation between the file in the actual physics usim card is wanted.
Fig. 2 is the flow chart that prior art conducts interviews to the EF file.As seen from the figure, prior art is after the access request of receiving the EF file, can and obtain the FCP parameter of this EF file by SELECT Instruction Selection file, according to EFarr file identification of putting down in writing in the FCP parameter and recording indexes the EFarr file is selected and the read access condition again, thereby obtained the access consideration of this EF file and finish visit.This method all needs the EFarr file is carried out the selection of a file and reading of respective record when the EF file being conducted interviews at every turn, when same access consideration of the same EFarr file of some file-sharing, make the EFarr record be repeated to read, the response time is long.
Fig. 3 is that access method of the present invention is used the flow chart of static access condition buffer area to EF file access.As seen from the figure, access method of the present invention is after the access request of receiving the EF file, by SELECT Instruction Selection file and obtain its FCP parameter, determine corresponding access consideration buffer area according to buffer area catalogue file sign under the EFarr recording indexes of putting down in writing in the FCP parameter and this EF file, read and judge the access identities of this access consideration buffer area.If access consideration buffer area memory access condition is then visited this EF file according to the access consideration of storage; Otherwise, select the EFarr file, read corresponding EFarr file logging and access consideration is stored in the corresponding access consideration buffer area, according to access consideration this EF file is conducted interviews again.
Access method of the present invention only needs each record of EFarr file is only read once, just can obtain the access consideration information of all EF files under the same catalogue, the accessing step of the EF file that feasible same access consideration sharing same EFarr file writes down is simplified, and the response time shortens.If similar operations occurs in the initialization procedure of usim card, will avoid EFarr file in the start process repeat select and read process, shortened the available machine time.
Be example with static access condition buffer area below, further specify the step of EF file access in access method of the present invention:
Step 1: the static array that application equates with access consideration buffer area quantity m in the memory field;
After step 2:USIM card activated, the access identities of putting all-access condition buffer area was " not storage ";
Step 3: the access request that receives a certain EF file;
Step 4: use this EF file of SELECT Instruction Selection, and obtain its FCP parameter;
Step 5: resolve the FCP parameter, obtain corresponding EFarr file identification and EFarr recording indexes;
Step 6: search corresponding access consideration buffer area according to buffer area catalogue file sign and EFarr recording indexes under this document, if the access identities of this buffer area is " not storage " (promptly the access consideration of this EF file is not stored), then continue step 7, otherwise, jump to step 9;
Step 7: use in the SELECT Instruction Selection step 5 and resolve the EFarr file that the FCP parameter obtains;
Step 8: resolve the FCP parameter in the read step 5 and obtain the EFarr file logging, obtain access consideration and be stored in corresponding access consideration buffer area, and the access identities of this buffer area is changed to " storing ";
Step 9: file is conducted interviews according to the access consideration of storing in this buffer area.
The inventive method also can have other various embodiments; without departing from the spirit and substance of the case in the method for the present invention; those skilled in the art work as can make various corresponding changes or distortion according to the inventive method, but these corresponding changes or distortion all belong to the claim protection range of the inventive method.
Claims (8)
1, the access method of EF file in a kind of user terminal usim card, adopt the access consideration of this EF file that this document is conducted interviews, it is characterized in that: the access consideration that access consideration buffer area storage EF file is set, and each access consideration buffer area is provided with access identities, when visit EF file, read the access identities of the pairing access consideration buffer area of this EF file and judge according to the relevant information of this EF file, if showing, access identities stores access consideration, then this EF file is conducted interviews according to this condition, otherwise, read the EFarr file of this EF file correspondence, and the access consideration that the EFarr file is comprised is stored in the corresponding access consideration buffer area, according to access consideration this EF file is conducted interviews again at last.
2,, it is characterized in that the quantity of static access condition buffer area can be determined by following formula according to the described method of claim 1:
The quantity of buffer area
In the formula: m represents the quantity of access consideration buffer area;
I represents the index value of the application ADF catalogue that usim card is supported;
N represents the application ADF catalogue quantity of the maximum that usim card is supported;
k
iRepresent the maximum EFarr record number that the EFarr file comprises in i the ADF catalogue;
J represents the dominant record number of the EFarr file that comprises in the MF catalogue;
N represents the dominant record number of the EFarr file that comprises in the TELECOM catalogue.
3, according to the described method of claim 1, it is characterized in that the setting of access consideration buffer area, both can realize by static mode, also can realize by dynamical fashion.
4, according to the described method of claim 1, it is characterized in that the static static storage array that is meant that just application equates with access consideration buffer area quantity m in internal memory before access consideration obtains that is provided with of access consideration buffer area, a static storage array is the access consideration buffer area of one or more EF files, and actually occupies corresponding internal memory physical space.File identification according to ADF, TELECOM or MF catalogue (is convenient statement, hereinafter referred to as buffer area catalogue file sign) and the EFarr recording indexes m access consideration buffer area distributed, make that each buffer area catalogue file sign and EFarr recording indexes can unique corresponding access consideration buffer areas, and can read the information of the access consideration buffer area of correspondence by buffer area catalogue file sign and EFarr recording indexes.
5, according to the described method of claim 1, it is characterized in that the access consideration buffer area dynamically arranges to be meant and to obtain behind the access consideration and needs when preserving, a storage of application array in internal memory, and actually occupy corresponding internal memory physical space.When this access consideration of storage, according to sign of the buffer area catalogue file under this EF file and EFarr recording indexes the access consideration buffer area of storing this access consideration is carried out mark simultaneously, make it can read the information of this access consideration buffer area by buffer area catalogue file sign and EFarr recording indexes.
6, according to the described method of claim 1, it is characterized in that the size of each access consideration buffer area can be determined according to the size of EFarr record, be no more than 255 bytes usually.
7, according to the described method of claim 1, it is characterized in that each access consideration buffer area all is provided with an access identities and shows whether this buffer area has stored corresponding access consideration, when this buffer area has been stored the access consideration of corresponding one or more files, this access identities is changed to " storing ", otherwise, be changed to " not storage ".
8,, it is characterized in that the access consideration buffer area is searched and being mated according to buffer area catalogue file sign (being the file identification of ADF, TELECOM or MF catalogue) and EFarr recording indexes according to the described method of claim 1.When visit EF file, at first determine buffer area catalogue file sign according to catalogue under this EF file, determine the EFarr recording indexes by the FCP parameter of resolving this EF file, corresponding informance with buffer area catalogue file sign and these two the already present all-access condition of information of same buffer areas of EFarr recording indexes compares one by one then, when the corresponding informance of these two a certain access consideration buffer areas of information of same was identical, then this access consideration buffer area was the access consideration buffer area of this EF file.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100783815A CN101039480B (en) | 2007-04-11 | 2007-04-11 | Method for accessing quickly USIM card basic document of user terminal |
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| CN2007100783815A CN101039480B (en) | 2007-04-11 | 2007-04-11 | Method for accessing quickly USIM card basic document of user terminal |
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| CN105930100A (en) * | 2016-04-15 | 2016-09-07 | 烽火通信科技股份有限公司 | Realization method for optimizing file reading/writing speed and frequency of USIM card |
| CN106412887A (en) * | 2016-06-15 | 2017-02-15 | 苏州畅途网络科技有限公司 | Virtual SIM card rapid authentication method, system, server and terminal |
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| CN105930100A (en) * | 2016-04-15 | 2016-09-07 | 烽火通信科技股份有限公司 | Realization method for optimizing file reading/writing speed and frequency of USIM card |
| CN106412887A (en) * | 2016-06-15 | 2017-02-15 | 苏州畅途网络科技有限公司 | Virtual SIM card rapid authentication method, system, server and terminal |
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