CN1921661A - GSM terminal authentication processing method - Google Patents
GSM terminal authentication processing method Download PDFInfo
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- CN1921661A CN1921661A CNA2006100991601A CN200610099160A CN1921661A CN 1921661 A CN1921661 A CN 1921661A CN A2006100991601 A CNA2006100991601 A CN A2006100991601A CN 200610099160 A CN200610099160 A CN 200610099160A CN 1921661 A CN1921661 A CN 1921661A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0853—Network architectures or network communication protocols for network security for authentication of entities using an additional device, e.g. smartcard, SIM or a different communication terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
- H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
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- General Engineering & Computer Science (AREA)
- Mobile Radio Communication Systems (AREA)
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Abstract
The present invention relates to a GSM terminal authentication processing method, utilizing the authentication operation of the GSM terminal by the SIM card mounted on the authentication server processor to prevent the GSM terminal suffering from broken and prevent the operators and the mobile communication service users. In the invention, after the GSM terminal starting up, the information about the terminal and the SIM card is transferred to the given number using the short message, or the authentication information of the IMSI and GSM terminal and the required safety information are transferred to the given authentication server through the short message. The authentication operation is processed after the authentication server receives the above short message and judges normal or not, and then the situation of normal or not is transferred to the GSM terminal. When in the abnormal situation, the control terminal is shut down or is confined to use, so the illegal broken of the GSM terminal is prevented to use the mobile communication service. In addition, in the invention, the software CRC is mounted in the GSM terminal and the corresponding information is transferred to the authentication server using the short message, so the information whether the illegal software is mounted can be confirmed.
Description
Technical field
The present invention relates to the authentication method of GSM terminal; in the present invention; utilize certificate server to handle the authentication operation of the GSM terminal of SIM (subscriber identity module-subscriber identification module) card use is installed, thereby prevent that the GSM terminal from being cracked and protecting operator and mobile communication service-user.
Background technology
In general, GSM (Global System for Mobile Communication-global system for mobile communications) was set up GSM (GroupSpecial Mobile-mobile communication special group) and is formed for developing pan-European mobile communication system by CEPT (Conference of European Posts and Telegraphs-Europe PTT the committee) in nineteen eighty-two.
Gsm system is intended to satisfy high call tone quality, cheap cost of use, support international roaming (International Roaming), support new service and with the compatibility of ISDN.
The most basic service of GSM should be thought phone (Telephony) service, and it is identical with other digital communication is number format and with its form transmission of ranking with numeral with speech coding.
In the service that GSM supports a kind of service being arranged is emergency service (Emergency Service), and the user can use three telephone numbers to carry out urgent call and freely converse.GSM can be connected in POTS (Plain Old Telephone Service-plain old telephone service), ISDN (Integrated Services Digital Network-integrated services digital network), PSPDN (Packet Switched Public Data Network-PSPDN Packet Switched Public Data Network), CNPDN (Circuit Switched Public Data Network-circuit switched public data network) and communicate operation with maximum 9600bps, can use X.25 or X.32 wait various protocols this moment.GSM need not other modulator-demodulator when being connected with ISDN or other digital network, Dan Zaiyu POTS then needs when connecting anyway with voice-grade modems (Audio Modem).In addition, GSM can support G3 fax, SMS (Short Message Service-Short Message Service) function, and above-mentioned SMS is that the short essay of twocouese transmits service, and it can maximumly transmit 160 bytes (byte).
Be provided with terminal installation in the GSM terminal and as a kind of SIM (Subscriber Identity Module-subscriber identification module) of smart card (Smart Card), above-mentioned SIM card is used to provide the user mobility energy, and the user can be inserted in the SIM card of oneself other terminal and go forward side by side and exercise to use.Wherein, each terminal has self intrinsic IMEI (International Mobile Equipment Identity-international mobile equipment identification number), and IMSI (International Mobile Subscriber Identity-international mobile subscriber identity) is stored in the SIM card and uses as authentication when connected system.That is to say that above-mentioned IMEI and IMSI are used for ensureing the individual's of GSM travelling performance.SIM card (Card) is protected by PIN (Personal Identity Number-PIN), and above-mentioned PIN uses by the code of 4 bit digital combination and when connecting the GSM net.Above-mentioned SIM (Subscriber Identity Module-subscriber identification module) card is a kind of module of the card form that can use in mobile communication terminal, it has the chip of user's personal information for storage inside, makes multiple services such as authentication that the user can be provided, payment, safety function.The telephone number that can in officely where distinguish with oneself that technical specifications such as above-mentioned SIM and code division multiple access (CDMA) mode or global system for mobile communications (GSM) mode are irrelevant freely carries out telephone operation, and the subscriber identify module card of certain amount of money will be deducted cost of the phone call and can supplement use again with money when each conversation.Wherein, be also referred to as the user as universal mobile telecommunications system (the UMTS:Universal Mobile Telecommunications System) subscriber identification module of 3G (Third Generation) Moblie and serve identification module (USIM:User Service Identity Module).
Under the situation of prior art, store the relevant information of locking (Lock) in the memory of GSM terminal (flash memory), make and to utilize above-mentioned validation of information locking (Lock) and release (Unlock) state, or store a plurality of MNC (Mobile Network Code-mobile network code, MNC)/MCC (Mobile Country Code-mobile country code) in the memory and multiple locking (multi Lock) is provided.
Locking (Lock) relevant sign (flag) is set at unlatching (Enable) state when the GSM terminal is sold, and it can be by normal running with terminal release (Unlock) and use any SIM card.
Above-mentioned locking (Lock) state representation is installed a SIM card and is used the mobile communication service, and release (Unlock) state representation is installed any SIM card and also can be used the mobile communication service.
Usually, the GSM terminal use is by taking SIM card to operations such as mobile communication service provider logins, and the mobile communication service of using mobile communication service provider to provide after the terminal is provided.
But, after the current GSM terminal is sold,, the SIM card of logining can be installed and use the mobile communication service if it is transferred under the situation of release (Unlock) state by cracking (illegal Unlock hacker) mode.
This be because, the locked secure information of mobile communication terminal (Lock security) simple storage in flash memory, thereby make its fail safe aspect very fragile.
Utilize the terminal and the server of GSM mobile communication service of the prior art not to have authentication operation, make the problem that terminal is cracked and uses with causing.
As mentioned above, be stored in the terminal, make the example of frequent generation, therefore, need develop corresponding with it technical scheme its release and illegal buying and selling because the security related information of GSM terminal of the prior art only writes down.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of authentication method of GSM terminal, in the present invention, the authentication operation of GSM terminal is not only carried out in terminal self, but together handle and can prevent the phenomenon that terminal is cracked in advance with the server of mobile communications network.
And, the object of the present invention is to provide a kind of authentication method of GSM terminal, in the present invention, even the cracker cracks the GSM terminal, utilize the mobile communication service must be for making, thereby can prevent the phenomenon that the GSM terminal is illegally used at verification process by server.
And, the object of the present invention is to provide a kind of authentication method of GSM terminal, behind the GSM starting up of terminal, utilize short message the information of terminal and SIM card to be sent to the number of appointment, or utilize short message with IMSI, IMEI (International Mobile Equipment Identity-international mobile equipment identification number), the authentication information of GSM terminal and required security information send the certificate server of appointment to, above-mentioned certificate server receives and carries out authentication operation behind the above-mentioned short message and whether judge normally, normally whether situation sends in the GSM terminal again with above-mentioned subsequently, make under improper situation, with control terminal shutdown or limit its use, thereby can prevent in advance that the GSM terminal from illegally being cracked uses the mobile communication service.
And, the object of the present invention is to provide a kind of authentication method of GSM terminal, in the present invention, calculate in the GSM terminal installed software CRC and utilize short message to send corresponding information to certificate server, thus the installation that can confirm illegal software information whether.
Achieve the above object for making, the authentication method of the GSM terminal among the present invention includes following several steps: the 1st step, and when the GSM starting up of terminal, utilize short message to send authentication information to assigned telephone number or certificate server by the addressing channel; The 2nd step, above-mentioned certificate server are relatively confirmed the log-on message of said GSM terminal and the authentication information that receives by above-mentioned short message and are authenticated; The 3rd step, above-mentioned certificate server sends authentication result to the said GSM terminal by the addressing channel; The 4th step, the said GSM terminal is moved according to above-mentioned authentication result.
And, in the 1st step of the present invention, when the said GSM terminal calculates the CRC of installed software and sends certificate server to by short message, above-mentioned certificate server will be with the software information of login benchmark confirm above-mentioned software illegal installation whether.
And include in above-mentioned the 4th step: when above-mentioned authentication result is under the improper situation, the said GSM terminal will be closed the step of the use of said GSM terminal power supply or restriction said GSM terminal; When above-mentioned authentication result is under the normal situation, the step that the said GSM terminal will make the said GSM terminal normally move.
And, include the IMSI information in the SIM card of the authentication-related information of said GSM terminal and installation in the above-mentioned authentication information.
And, include country code, network code, user identification code and national mobile user identification code in the above-mentioned IMSI information; Include the auth type sign indicating number (Type Approval Code) that is used for intrinsic identification terminal, final combinational code, sequence number in the above-mentioned IMEI information.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the structure chart of the gsm mobile communication system among the present invention;
Fig. 2 be handle in the GSM terminal of the present invention with the GSM mobile radio communication in the action flow chart of authentication operation of the certificate server that is provided with;
Fig. 3 is an action flow chart of self handling authentication operation in the GSM terminal of the present invention.
Wherein, Reference numeral:
22:GSM terminal 24: Node B (nod-B)
26：RNC 28：MSC
30: certificate server
Embodiment
With reference to the accompanying drawings the useful embodiment among the present invention is described in detail.
Fig. 1 is the structure chart of the gsm mobile communication system among the present invention; Fig. 2 be handle in the GSM terminal of the present invention with the GSM mobile radio communication in the action flow chart of authentication operation of the certificate server that is provided with; Fig. 3 is an action flow chart of self handling authentication operation in the GSM terminal of the present invention.
Gsm mobile communication system as the 3rd generation wireless communication system, it also can provide integral data services such as multimedia at a high speed except voice and modulator-demodulator, fax.
Above-mentioned service is divided into the voice-and-data service substantially, and the specification relevant with the voice service of extranets defines by 3GPP TS 25.415, and the specification relevant with the data, services of extranets then defines by 3GPP TR23.910.
The GSM net is as the 3rd third-generation mobile communication net, it is divided into substantially: carry out the CS zone (Circuit Switch domain-circuit switched zone) of data processing with PSTN/ISDN, and the PS zone (Packet Switch domain-packet switching zone) that is used to handle the IP data that wireless Internet or IMS application service are provided.
Illustrate Node B 24 and RNC (Radio Network Controller-radio network controller) 26 among Fig. 1, wherein, above-mentioned Node B 24 communicates with GSM terminal 22 by Uu interface (interface), above-mentioned RNC26 is used to control above-mentioned Node B 24, make when the user selects packets of information business (Packet Service) for use internet or intranet (intranet) service by GSM terminal 22, will GSM terminal 22 is connected by the SGSN (Serving GPRS Support Node-Serving GPRS Support Node) 32 of Iu interface with the GPRS net; And when the user selects Circuit Service (Circuit Service), said GSM terminal 22 will be connected with MSC (Mobile Switching Center-mobile switching centre) 28, thereby make itself and Kongzhong (PLMN, PSDN) or recipient's mobile communication terminal converse.
And, also illustrate SGSN32 and GGSN (Gateway GPRS support node-Gateway GPRS Support Node) 34 among Fig. 1, above-mentioned SGSN32 and GGSN34 are as being connected in above-mentioned RNC26 and constituting the core node that GPRS nets, wherein, above-mentioned SGSN32 is used for effectively transmitting the packet data and the signal of high speed, low speed, above-mentioned GGSN34 is connected in above-mentioned SGSN32 and plays gateway (gateway) effect, thereby user and internet or out of Memory packet switching network are integrated.
In addition, be provided with the certificate server 30 among the present invention in the switch 28, above-mentioned certificate server 30 can change to other position of mobile radio communication.
IMSI, IMEI that the GSM terminals that receive above-mentioned certificate server 30 transmit and end message also carry out authentication processing and reply it, make under the situation of authentication success, and the GSM terminal is normally used; And under the situation of authentification failure, its use will be shut down or limit to the GSM terminal.
Record stores the authentication information relevant with SIM card with user's GSM terminal in the above-mentioned certificate server 30, and based on above-mentioned information the authentication information that receives by short message is carried out authentication processing.
Fig. 2 be handle in the GSM terminal of the present invention with the GSM mobile radio communication in the action flow chart of authentication operation of the certificate server that is provided with.At first, when GSM terminal 22 start, GSM terminal 22 sends the information of terminal information and SIM card to designated telephone number or certificate server 30 (step S50 ~ S52) by short message.
Include IMEI (International Mobile Equipment Identity-international mobile equipment identification number), IMSI and software CRC computing information in the authentication information.
Wherein, IMEI (International Mobile Equipment Identity-international mobile equipment identification number) is mutual intrinsic identification user, and it includes auth type sign indicating number (Type Approval Code), final combinational code and sequence number and constitute 15 as the identification code of distributing to terminal.
IMSI (International Mobile Station Identity-international mobile subscriber identity) information is 15 intrinsic information of identification code, and it includes formations such as mobile country code, mobile network code, MNC, mobile identification number and national mobile user identification code.
The information of the information of the reception GSM terminals 22 such as authentication center of the GSM net of certificate server 30 or appointment and the SIM card of installation, software information etc. also carry out authentication processing (step S54).
Record stores the authentication information relevant with SIM card with user's GSM terminal in the above-mentioned certificate server 30, and the authentication information of receiving based on above-mentioned information butt joint carries out authentication processing.
After carrying out authentication operation, its end value is sent in the said GSM terminal 22, make under the situation of authentication success, the GSM terminal continues normal the use; And under the situation of authentification failure, will make the GSM terminal closedown or limit its use (step S56).
As mentioned above, in the present invention, after GSM terminal 22 start, utilize short message to send IMSI, IMEI, end message, software information to designated telephone number or certificate server 30,30 of above-mentioned certificate servers carry out verification process by the information that receives.
After above-mentioned certificate server 30 carries out verification process, to authenticate by whether information sends in the GSM terminal again, the said GSM terminal parses is resolved the information of above-mentioned reception, confirms that current state is normal operating condition or improper user mode and takes suitable action.
Fig. 3 is an action flow chart of self handling authentication operation in the GSM terminal of the present invention.
As shown in the figure, when GSM terminal 22 start, GSM terminal 22 is with installed software CRC (cyclic redundancy check-cyclic redundancy check (CRC)) in IMSI (International Mobile Station Identity-international mobile subscriber identity) information, IMEI information in the SIM card of installing and the corresponding terminal that calculates and send the certificate server 30 of GSM net to.
Wherein, IMSI (International Mobile Station Identity-international mobile subscriber identity) 15 intrinsic information of identification code of information bit, it includes mobile country code, mobile network code, MNC, mobile identification number and national mobile user identification code etc. and constitutes (step S60～S64).
IMSI information that the corresponding GSM terminal 22 that will receive the certificate server 30 that is connected with the switch 28 of GSM mobile radio communication transmits and software CRC information etc., and carry out authentication processing (the step S66～S70) of corresponding GSM terminal 22 based on above-mentioned information.
Wherein, if IMSI, IMEI information and the GSM end message of current reception are under the improper situation, above-mentioned certificate server (30) will transmit the authentication error signal, make it normally to use (step S72) thereby corresponding GSM terminal (22) is shut down or limit its use.
And, if under the situation of the normal login of IMSI, IMEI information and the GSM end message of current reception, above-mentioned certificate server 30 will transmit the authentication response signal, thereby make the GSM terminal normally use (step S74).
As mentioned above, in the present invention, after 22 starts (on) of GSM terminal, transmit short message or utilize short message to send IMSI, end message, software information the certificate server 30 of appointment to the number of appointment, 30 of certificate servers that receive above-mentioned information carry out verification process by the information that receive.
After in above-mentioned certificate server, carrying out verification process, above-mentioned certificate server will authenticate by whether information sends the GSM terminal to again, make under improper situation the power supply that the GSM terminal is closed a terminal or limit its use, and under normal situation, the GSM terminal is then normally moved.
In the prior art, to adopt the GSM terminal from the information of reading SIM card and confirm whether be the mode of the SIM that obtains allowing, and in the present invention, can carry out interlock with the certificate server of mobile communication service provider and control above-mentioned authentication operation, thereby only make the state that cracks (hacking) terminal can't crack locking (Lock) state of (hacking) terminal down, and only allow the terminal of normal request normally to use.
And, utilize short message to carry out the authentication processing operation among the present invention, make under the situations such as illegal modifications of software, can corresponding information be sent to certificate server and confirm corresponding with it authentication result by the crc check mode.And the difference of the present invention and prior art also is, in the present invention, will carry out handling with authentication and individualized (personalization) of lock-related behind starting up of terminal.
The effect of invention:
According to aforesaid the present invention, can only allow to use the SIM card of the requirement that meet mobile communication carrier in the GSM terminal, and by normal running request release (Unlock) time, also can contrast accordingly and operate.
And, in the present invention, behind the GSM starting up of terminal, utilize short message the information of terminal and SIM card to be sent to the number of appointment, or utilize short message with IMSI, the authentication information of GSM terminal and required security information send the certificate server of appointment to, above-mentioned certificate server receives and carries out authentication operation behind the above-mentioned short message and whether judge normally, normally whether situation sends in the GSM terminal again with above-mentioned subsequently, make under improper situation, with control terminal shutdown or limit its use, thereby can prevent in advance that the GSM terminal from illegally being cracked uses the mobile communication service.
And, in the present invention, calculate in the GSM terminal installed software CRC and utilize short message to send corresponding information to certificate server, thus the installation that can confirm illegal software information whether.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art be when can making various corresponding changes and distortion according to the present invention, but these corresponding change and protection range that distortion all should belong to the appended claim of the present invention just.
Claims (5)
1. the authentication method of a global mobile telecommunication system is characterized in that, includes following several steps:
The 1st step when global mobile telecommunication system is started shooting, utilizes short message to send authentication information to assigned telephone number or certificate server by the addressing channel;
The 2nd step, above-mentioned certificate server are relatively confirmed the log-on message of above-mentioned global mobile telecommunication system and the authentication information that receives by above-mentioned short message and are authenticated;
The 3rd step, above-mentioned certificate server sends authentication result to above-mentioned global mobile telecommunication system by the addressing channel;
The 4th step, above-mentioned global mobile telecommunication system moves according to above-mentioned authentication result.
2. the authentication method of global mobile telecommunication system according to claim 1, it is characterized in that, in the 1st step of the present invention, when above-mentioned global mobile telecommunication system calculates the cyclic redundancy check (CRC) of installed software and sends certificate server to by short message, above-mentioned certificate server will be with the software information of login benchmark confirm above-mentioned software illegal installation whether.
3. the authentication method of global mobile telecommunication system according to claim 1 and 2 is characterized in that, includes in above-mentioned the 4th step:
When above-mentioned authentication result is under the improper situation, above-mentioned global mobile telecommunication system will be closed above-mentioned global mobile telecommunication system power supply or be limited the step of the use of above-mentioned global mobile telecommunication system;
When above-mentioned authentication result is under the normal situation, the step that above-mentioned global mobile telecommunication system will make above-mentioned global mobile telecommunication system normally move.
4. the authentication method of global mobile telecommunication system according to claim 1, it is characterized in that, include the international mobile subscriber identity information in the subscriber identify module card of the authentication-related information of above-mentioned global mobile telecommunication system and installation in the above-mentioned authentication information.
5. according to the authentication method of claim 1 or 4 described global mobile telecommunication systems, it is characterized in that,
Include country code, network code, user identification code and national mobile user identification code in the above-mentioned international mobile subscriber identity information;
Include the auth type sign indicating number that is used for intrinsic identification terminal, final combinational code, sequence number in the above-mentioned international mobile equipment identification number information.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050077758 | 2005-08-24 | ||
| KR1020050077758A KR100770313B1 (en) | 2005-08-24 | 2005-08-24 | A method of processing authentication for GSM station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1921661A true CN1921661A (en) | 2007-02-28 |
Family
ID=37779188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100991601A Pending CN1921661A (en) | 2005-08-24 | 2006-07-31 | GSM terminal authentication processing method |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100770313B1 (en) |
| CN (1) | CN1921661A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765113A (en) * | 2009-12-18 | 2010-06-30 | 中兴通讯股份有限公司 | Anti-theft system and method for data card |
| CN102835137A (en) * | 2010-03-16 | 2012-12-19 | 高通股份有限公司 | Facilitating authentication of access terminal identity |
| CN102843669A (en) * | 2012-08-17 | 2012-12-26 | 中兴通讯股份有限公司 | Data access method and device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413456B (en) * | 2011-09-02 | 2014-11-19 | 中国电信股份有限公司 | User terminal anti-theft method, user terminal anti-theft device and user terminal anti-theft system based on operation network |
| US9813976B2 (en) | 2016-02-09 | 2017-11-07 | T-Mobile Usa, Inc. | Detection of a delinquent mobile device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040106980A (en) * | 2003-06-10 | 2004-12-20 | 에스케이 텔레콤주식회사 | Method of registering gsm subscriber in cdma networks |
| KR100557132B1 (en) * | 2003-10-07 | 2006-03-03 | 삼성전자주식회사 | Mobile equipment for protection of private information and method therein |
| KR20050058653A (en) * | 2003-12-12 | 2005-06-17 | (주)제이엘원 | Authenticating method for mobile communication terminal |
-
2005
- 2005-08-24 KR KR1020050077758A patent/KR100770313B1/en not_active IP Right Cessation
-
2006
- 2006-07-31 CN CNA2006100991601A patent/CN1921661A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765113A (en) * | 2009-12-18 | 2010-06-30 | 中兴通讯股份有限公司 | Anti-theft system and method for data card |
| CN102835137A (en) * | 2010-03-16 | 2012-12-19 | 高通股份有限公司 | Facilitating authentication of access terminal identity |
| US9578498B2 (en) | 2010-03-16 | 2017-02-21 | Qualcomm Incorporated | Facilitating authentication of access terminal identity |
| CN102843669A (en) * | 2012-08-17 | 2012-12-26 | 中兴通讯股份有限公司 | Data access method and device |
| WO2014026505A1 (en) * | 2012-08-17 | 2014-02-20 | 中兴通讯股份有限公司 | Data access method and device |
| US9325704B2 (en) | 2012-08-17 | 2016-04-26 | Zte Corporation | Data access method and device |
| CN102843669B (en) * | 2012-08-17 | 2019-03-15 | 中兴通讯股份有限公司 | Data access method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100770313B1 (en) | 2007-10-25 |
| KR20070023302A (en) | 2007-02-28 |
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