CN101312569A - Selection method for mobile phone service network - Google Patents
Selection method for mobile phone service network Download PDFInfo
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- CN101312569A CN101312569A CNA2007100938286A CN200710093828A CN101312569A CN 101312569 A CN101312569 A CN 101312569A CN A2007100938286 A CNA2007100938286 A CN A2007100938286A CN 200710093828 A CN200710093828 A CN 200710093828A CN 101312569 A CN101312569 A CN 101312569A
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Abstract
The invention discloses a mobile phone service network selecting method, comprising steps of: storing the PLMN number list of the IMSI demanded encryption in the intelligent card or memory module of a mobile phone; and when the non-access layer of the mobile phone determines the accessed PLMN, selecting the PLMN stored in the PLMN number list demanding IMSI encryption. The invention improves the security of the prior 3GPP system, can access into the service network with high security and can confirm that the new encrypted mobile phone can roam to old networks without encryption.
Description
Technical field
The present invention relates to service network and select technical field, particularly relate to a kind of selection method for mobile phone service network.
Background technology
Along with the development of wireless communication technique, become more and more easily simultaneously in people's life, because the defective of technology, individual's secret protection problem also faces more and more serious challenge.The international mobile subscriber identity of mobile phone (International Mobile Subscriber Identity IMSI) is to be number that the mobile subscriber distributed of unique identification in the world, also being an important privacy information as the cellphone subscriber, is this user's distinguishing mark.
The third generation (3rd Generation 3G) mobile communication system is the mobile communication system that present most countries in the world and area are all being used or will used.3GPP (3rd GenerationPartnership Project) can finish all relevant standard operations as the normal structure of 3G.
In UMTS (Universal Mobile Telecommunication System) system, Temporary Mobile (Temporary Mobile Subscriber Identity TMSI)/bag Temporary Mobile (Packet Temporary Mobile Subscriber Identity P-TMSI), IMSI and International Mobile Station Equipment Identification user label methods such as (International Mobile Equipment Identity IMEI) are arranged.
TMSI/P-TMSI is used in the identification user by the network system branch, and can periodically update.IMSI is the exclusive unique user identity mark of user, is stored in the identify label module (Subscriber Identity Module SIM) of mobile phone.IMEI is used for the mark cell phone apparatus, the User Recognition when generally being used for urgent call.
The permanent identity of user in UMTS is IMSI., the user identity identification in network almost under any circumstance all will be by TMSI/P-TMSI, and the confidentiality of user identity just can not revealed to passive stealer like this.Certainly, initial registration can not use temporary identity, because network when also not knowing user's permanent identity, is not understood user's basic conditions such as authority, can not distribute temporary identity.Just know after the registration, temporary identity just can use.
If mobile phone enters new territory, so, can obtain the contact of IMSI and TMSI/P-TMSI by old route.If the route in old territory is not known in new territory, then mobile phone must be applied for new TMSI.In some places,, there is a large amount of IMSI need be by the wave point transmission because down the crowd of machine opens mobile phone such as the airport.This just means that the listener-in can be other user by understanding IMSI.Add by observing user's behavior, can be easy to realize tracking the user.
In order to protect user profile better, need carry out strict protection for user's IMSI territory.
In the 3GPP agreement, consider when the user registers first, can't obtain key etc. and encrypt for information about, so IMSI adopts the plain code transmission to make user identity to be leaked in this course.
A kind of possible scheme is when mobile telephone registration first, IMSI is encrypted protection user profile.But this method is incompatible with present 3GPP agreement, needs the cost cost to transform existing equipment, and has also brought very big problem for the roaming between the country variant.
Public land mobile network (Public Land Mobile Networks PLMN) number is the sign of a kind of mark mobile radio system operator.PLMN is in two sub-sections: country code and operator code.Wherein, country code is the numeral of 3 0-9, represents affiliated country of operator or regional; Operator code is the numeral of 2 or 3 s' 0-9, represents the different operator in this country or area.The PLMN of interventional systems is issued by broadcast channel (Broadcast CHannel BCH) broadcasting.
Generally speaking, consider the compatibility between the equipment, the cipher mode a PLMN inside is consistent.
At present in the 3GPP system, select service network according to following steps in the mobile phone power-on process: 1. mobile phone power-on; 2. the Access Layer of mobile phone is sought the strongest sub-district of signal on each carrier wave, and understands its system information, obtains the PLMN number; 3. the Access Layer of mobile phone Non-Access Stratum that whole PLMN number informations of obtaining are reported; 4. the Non-Access Stratum of mobile phone is determined the PLMN:1 of access in the following order) HPLMN (Home PLMN, main PLMN) or equivalent HPLMN; 2) PLMN of user's selection; 3) the available PLMN that stores in the SIM card; 4) the good PLMN of other receptions; 5) the relatively poor PLMN of other receptions; 5. Access Layer is registered in the PLMN that selects.
As can be seen from the above step, on the order that PLMN selects, do not consider the intensity of different PLMN confidentiality, exist mobile phone can insert the service network of good confidentiality originally, but but select the possibility of the network of confidentiality difference.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of selection method for mobile phone service network, and it can insert the service network of good confidentiality, increases the confidentiality of former 3GPP system.
For solving the problems of the technologies described above, selection method for mobile phone service network of the present invention in turn includes the following steps: storage needs to encrypt the PLMN list of numbers of IMSI in (1) mobile phone; (2) mobile phone power-on; (3) Access Layer of mobile phone is sought the strongest sub-district of signal on each carrier wave, and understands its system information, obtains the PLMN number; (4) Access Layer of mobile phone reports Non-Access Stratum to the whole PLMN number informations that obtain; (5) Non-Access Stratum of mobile phone is determined the PLMN of access; (6) Access Layer is registered in the PLMN that selects.
Described step (4) is determined the PLMN:a of access successively in the following order) HPLMN or equivalent HPLMN; B) need encrypt the PLMN of the PLMN list of numbers stored of IMSI; C) PLMN of user's selection; D) the available PLMN that stores in the SIM card; E) the good PLMN of other receptions; F) the relatively poor PLMN of other receptions.
The PLMN list of numbers that needs to encrypt IMSI is stored in the memory module of mobile phone intelligent card or mobile phone.
Method of the invention process has increased the confidentiality of original 3GPP system, and mobile phone can insert confidentiality preferably in the service network, and guarantees that the new mobile phone of encrypting can roam into old not refined net.
Description of drawings
The present invention is further detailed explanation below in conjunction with accompanying drawing and embodiment:
Fig. 1 is the method flow diagram of the handset-selected PLMN of first embodiment of the invention;
Fig. 2 is the signaling process figure of the handset-selected PLMN of first embodiment of the invention;
Fig. 3 is a mobile phone intelligent card apparatus structure schematic diagram of realizing first embodiment of the invention;
Fig. 4 is the method flow diagram of another embodiment of the present invention;
Fig. 5 is a handset structure schematic diagram of realizing another embodiment of the present invention.
Embodiment
The present invention is applicable to the mobile phone service network selection course of 3GPP protocol compatibility.
As shown in Figure 1, 2, first kind of embodiment of the handset-selected service network of the present invention, it comprises the steps: 1) the PLMN list of numbers of storage needs encryption IMSI in mobile phone intelligent card; 2) mobile phone power-on; 3) Access Layer of mobile phone is sought the strongest sub-district of signal on each carrier wave, and understands its system information, obtains the PLMN number; 4) Access Layer of mobile phone reports Non-Access Stratum to the whole PLMN number informations that obtain; 5) Non-Access Stratum of mobile phone inquiry smart card need to obtain the PLMN list of numbers of encryption IMSI; 6) Non-Access Stratum of mobile phone is determined the PLMN of access; 7) Access Layer is registered in the PLMN that selects.
Above-mentioned steps 6) PLMN that determine to insert in the following order; A) report the HPLMN that has HPLMN (Home PLMN, main PLMN) or equivalence among the PLMN, if, then select the best PLMN of signal in this set, if not, then enter step b); B) report the PLMN that has the PLMN list of numbers stored that needs encryption IMSI among the PLMN, if, then select the best PLMN of signal in this set, if not, then enter step c); C) report the PLMN that exists the user to select among the PLMN, if, then select the best PLMN of signal in this set, if not, then enter step d); D) report and have the available PLMN that stores in the SIM card among the PLMN, if, then select the best PLMN of signal in this set, if not, then enter step e); E) report the good PLMN of reception that exists among the PLMN, if, then select the best PLMN of signal in this set, if not, then enter step f); F) report the PLMN that exists reception relatively poor among the PLMN, if, then select the best PLMN of signal in this set, if not, then PLMN selects failure.
As shown in Figure 3, the smart card apparatus 3 of enforcement said method comprises other functional units 31 of PLMN list cell 32, IMSI memory cell 33, IMSI ciphering unit 34, selector 35 and smart card of needs encryption IMSI; The function of each unit is:
This PLMN list cell 32 that need encrypt IMSI is used for judging whether the PLMN of the selection of input is the element of this tabulation, and the result outputs to selector 35; Operation is upgraded in the PLMN list cell support that needs to encrypt IMSI.
This IMSI memory cell 33 is used to store the IMSI information of this user's correspondence, and its output can connect selector 35 and IMSI ciphering unit 34; In addition, adapt to the variation of network in order to ensure this method, the especially not adding of same area or withdraw from, oneself content update is finished in the input of the PLMN list update order that this PLMN list cell that need encrypt IMSI can be by encrypting IMSI; This PLMN list cell that need encrypt IMSI exports whether give mobile device to the IMSI information encrypted simultaneously.
This IMSI ciphering unit 34 is used for the IMSI number of IMSI memory cell 33 outputs is encrypted according to cryptographic algorithm, and exports selector 35 to;
This selector 35 is used for encrypting as required the IMSI that IMSI that the judged result of the PLMN list cell 32 of IMSI selects output to encrypt through IMSI ciphering unit 34 does not still encrypt;
Other functional units 31 of smart card are the same with at present traditional smart card, finish the required function of smart card except that above-mentioned implementation method.
Another embodiment of the present invention realizes that the steps in sequence of selection method for mobile phone service network is as follows: 1) the PLMN list of numbers that storage needs to encrypt IMSI in mobile phone; 2) mobile phone power-on; 3) Access Layer of mobile phone is sought the strongest sub-district of signal on each carrier wave, and understands its system information, obtains the PLMN number; 4) Access Layer of mobile phone reports Non-Access Stratum to the whole PLMN number informations that obtain; 5) Non-Access Stratum of mobile phone is determined the PLMN of access; 6) Access Layer is registered in the PLMN that selects.
Above-mentioned steps 5) PLMN:a that determine to insert in the following order) report the HPLMN (Home PLMN, main PLMN) that exists among the PLMN or the HPLMN of equivalence, if, then select the best PLMN of signal in this set, if not, then enter step b); B) report the PLMN that has the PLMN list of numbers stored that needs encryption IMSI among the PLMN; If, then select the best PLMN of signal in this set, if not, then enter step c); C) report the PLMN that exists the user to select among the PLMN, if, then select the best PLMN of signal in this set, if not, then enter step d); D) report and have the available PLMN that stores in the SIM card among the PLMN, if, then select the best PLMN of signal in this set, if not, then enter step e); E) report the good PLMN of reception that exists among the PLMN, if, then select the best PLMN of signal in this set, if not, then enter step f); F) report the PLMN that exists reception relatively poor among the PLMN.
Above-mentioned embodiment realizes that by following handset structure as shown in Figure 5, this handset structure comprises PLMN tabulation and the signaling process processing module that standard cell phone module, PLMN select module, need IMSI to encrypt.
Described standard cell phone module is finished the function of conventional mobile phone, relevant with the present invention is the PLMN selection function and inserts message processing function, the PLMN that output is selected gives the PLMN tabulation that needs IMSI to encrypt, and output listing is upgraded the PLMN tabulation that operation is given needs IMSI to encrypt.
The memory module of the PLMN tabulation that the described IMSI of needs encrypts finishes to judge whether the PLMN that selects belongs to the function of this tabulation, and output IMSI encrypted state is given improved SIM card and described signaling process processing module.Under list update operation control, the renewal of this tabulation is finished in the PLMN tabulation that the described IMSI of needs encrypts simultaneously.
Described PLMN selects module to finish PLMN system of selection process among the present invention, and output waits to select the PLMN number to give described signaling process processing module for the PLMN number that PLMN tabulates and output is selected of the described IMSI of needs encryption.
Described signaling process processing module is selected to fill in access signaling message according to standard 3GPP protocol method or the inventive method according to the IMSI encrypted state, exports to message to the standard cell phone module.
Claims (4)
1, a kind of selection method for mobile phone service network in turn includes the following steps:
(1) mobile phone power-on;
(2) Access Layer of mobile phone is sought the strongest sub-district of signal on each carrier wave, and understands its system information, obtains the PLMN number;
(3) Access Layer of mobile phone reports Non-Access Stratum to the whole PLMN number informations that obtain;
(4) Non-Access Stratum of mobile phone is determined the PLMN of access;
(5) Access Layer is registered in the PLMN that selects,
It is characterized in that: step (1) the PLMN list of numbers that the storage needs are encrypted IMSI in mobile phone before.
2, selection method for mobile phone service network as claimed in claim 1 is characterized in that: described step (4) is determined the PLMN of access successively in the following order:
A) HPLMN of HPLMN or equivalence;
B) need encrypt the PLMN of the PLMN list of numbers stored of IMSI;
C) PLMN of user's selection;
D) the available PLMN that stores in the SIM card;
E) the good PLMN of other receptions;
F) the relatively poor PLMN of other receptions.
3, selection method for mobile phone service network as claimed in claim 2 is characterized in that: the PLMN list of numbers that needs are encrypted IMSI is stored in the mobile phone intelligent card.
4, selection method for mobile phone service network as claimed in claim 2 is characterized in that: the PLMN list of numbers that needs are encrypted IMSI is stored in the mobile phone memory module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100938286A CN101312569B (en) | 2007-05-25 | 2007-05-25 | Selection method for mobile phone service network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100938286A CN101312569B (en) | 2007-05-25 | 2007-05-25 | Selection method for mobile phone service network |
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| Publication Number | Publication Date |
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| CN101312569A true CN101312569A (en) | 2008-11-26 |
| CN101312569B CN101312569B (en) | 2011-07-20 |
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| CN2007100938286A Active CN101312569B (en) | 2007-05-25 | 2007-05-25 | Selection method for mobile phone service network |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873569A (en) * | 2009-04-21 | 2010-10-27 | 深圳富泰宏精密工业有限公司 | Sharing system and method of internal networks of different operators |
| CN101932079A (en) * | 2010-09-10 | 2010-12-29 | 中兴通讯股份有限公司 | Public land mobile communication network selection method and device |
| CN102118839A (en) * | 2009-12-30 | 2011-07-06 | 重庆重邮信科通信技术有限公司 | PLMN (Public Land Mobile Network) network selecting method of multimode terminal |
| CN102300193A (en) * | 2011-08-04 | 2011-12-28 | 华为终端有限公司 | International mobile subscriber identifier (IMSI) automatic switching method and device |
| CN104363629A (en) * | 2014-11-03 | 2015-02-18 | 联通兴业通信技术有限公司 | System, method and identification card for accessing operator networks |
| WO2019213946A1 (en) * | 2018-05-11 | 2019-11-14 | Apple Inc. | Subscriber identity privacy protection against fake base stations |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10046343B4 (en) * | 2000-09-19 | 2005-08-18 | Siemens Ag | Method for registering a terminal in a packet data network |
| CN1214555C (en) * | 2002-04-15 | 2005-08-10 | 华为技术有限公司 | Method for unified managing resource in packet network of PLMN |
-
2007
- 2007-05-25 CN CN2007100938286A patent/CN101312569B/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873569A (en) * | 2009-04-21 | 2010-10-27 | 深圳富泰宏精密工业有限公司 | Sharing system and method of internal networks of different operators |
| CN101873569B (en) * | 2009-04-21 | 2013-07-03 | 深圳富泰宏精密工业有限公司 | Sharing system and method of internal networks of different operators |
| CN102118839A (en) * | 2009-12-30 | 2011-07-06 | 重庆重邮信科通信技术有限公司 | PLMN (Public Land Mobile Network) network selecting method of multimode terminal |
| CN101932079A (en) * | 2010-09-10 | 2010-12-29 | 中兴通讯股份有限公司 | Public land mobile communication network selection method and device |
| CN101932079B (en) * | 2010-09-10 | 2013-08-07 | 中兴通讯股份有限公司 | Public land mobile communication network selection method and device |
| CN102300193A (en) * | 2011-08-04 | 2011-12-28 | 华为终端有限公司 | International mobile subscriber identifier (IMSI) automatic switching method and device |
| CN104363629A (en) * | 2014-11-03 | 2015-02-18 | 联通兴业通信技术有限公司 | System, method and identification card for accessing operator networks |
| WO2019213946A1 (en) * | 2018-05-11 | 2019-11-14 | Apple Inc. | Subscriber identity privacy protection against fake base stations |
| CN112154624A (en) * | 2018-05-11 | 2020-12-29 | 苹果公司 | User identity privacy protection for pseudo base stations |
| US11589228B2 (en) | 2018-05-11 | 2023-02-21 | Apple Inc. | Subscriber identity privacy protection against fake base stations |
| US11863982B2 (en) | 2018-05-11 | 2024-01-02 | Apple Inc. | Subscriber identity privacy protection against fake base stations |
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|---|---|
| CN101312569B (en) | 2011-07-20 |
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Effective date of registration: 20180412 Address after: The 300456 Tianjin FTA test area (Dongjiang Bonded Port) No. 6865 North Road, 1-1-1802-7 financial and trade center of Asia Patentee after: Xinji Lease (Tianjin) Co.,Ltd. Address before: 201203 Shanghai city Zuchongzhi road Pudong New Area Zhangjiang hi tech park, Spreadtrum Center Building 1, Lane 2288 Patentee before: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. |
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Application publication date: 20081126 Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. Assignor: Xinji Lease (Tianjin) Co.,Ltd. Contract record no.: 2018990000196 Denomination of invention: Selection method for mobile phone service network Granted publication date: 20110720 License type: Exclusive License Record date: 20180801 |
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Effective date of registration: 20221021 Address after: 201203 Shanghai city Zuchongzhi road Pudong New Area Zhangjiang hi tech park, Spreadtrum Center Building 1, Lane 2288 Patentee after: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. Address before: 300456 1-1-1802-7, north area of financial and Trade Center, No. 6865, Asia Road, Tianjin pilot free trade zone (Dongjiang Bonded Port Area) Patentee before: Xinji Lease (Tianjin) Co.,Ltd. |
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