CN102547624A - Method, system and gateway for C2G international roaming user to switch international mobile subscriber identity (IMSI) - Google Patents
Method, system and gateway for C2G international roaming user to switch international mobile subscriber identity (IMSI) Download PDFInfo
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- CN102547624A CN102547624A CN2011100324223A CN201110032422A CN102547624A CN 102547624 A CN102547624 A CN 102547624A CN 2011100324223 A CN2011100324223 A CN 2011100324223A CN 201110032422 A CN201110032422 A CN 201110032422A CN 102547624 A CN102547624 A CN 102547624A
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Abstract
The invention discloses a method, a system and a gateway for a C2G international roaming user to switch international mobile subscriber identity (IMSI), which are applied to the technical field of mobile communication. The method includes the following steps: a C2G international roaming gateway judges whether IMSI registered by the C2G international roaming user is IMSI of a preferred Sponsor and set by a system based on position information reported by the user; if not, the gateway judges whether the time interval between the position update time of the C2G international roaming user this time and the time for successful IMSI switching last time is larger than a predetermined threshold value, and if the time interval is not larger than the predetermined threshold value, the IMSI of the C2G international roaming user is not switched. Interval for two-time successful switching can be set, the situation that back-and-forth IMSI switching of the user in boundary areas can be prevented, and thus user experience is enhanced and user complaint is reduced. When signals are poor or no signals are covered in the position of the network which preferred IMSI belongs to, the user can return to other IMSI to register an alternative network in a manual mode, and the system does not give switching instructions to the user so as to prevent switching endless loop from occurring.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to method, system and C2G international roaming gateway that C2G (CDMA to GSM) international roaming user is switched IMSI (International Mobile Subscriber Identity, international mobile subscriber identity).
Background technology
At present; The part countries/does not have CDMA (Code Division Multiple Access in the world; Code division multiple access) network coverage, like Europe, so CDMA user is when roaming into these countries/; Can only take to insert the mode of local GSM (Global System for Mobile Communications, global system for mobile communications) network and use the mobile communication service.Sponsor is special in CDMA user is provided the operator to the service of GSM netsurfing.The how tame Sponsor that possibly contract of common cdma network operator, the service that utilizes these Sponsor to provide, CDMA user just can arrive country's roaming that other no cdma network covers.
In different countries/, the service that different Sponsor provide has difference, and rate have difference.For let the user select automatically rate lower, serve better Sponsor; When the user roams into one when national; Whether the IMSI that at first uses in terminal/card acquiescence initiates location registers to network, identical with the corresponding IMSI of the Sponsor that should preferably select by the IMSI of the current use of network judges, if difference then send to be correlated with to terminal/card and indicate; Triggering terminal/card switches to preferred IMSI, thereby makes the user sign in to preferred Sponsor.
But wireless network covers and varies, after the indication user of system switches to preferred IMSI; Maybe be by chance corresponding the network very poor even no signal of signal on this position of this IMSI; Cause user normally logging in network and use business, consequence is very serious, very easily produces customer complaint.In the forntier region of the network coverage, possibly produce the situation that the user is switched back and forth between a plurality of IMSI.
Summary of the invention
The technical problem that the present invention will solve provides the method that a kind of C2G international roaming user is switched IMSI, can avoid between IMSI, frequently switching.
The present invention provides a kind of C2G international roaming user to switch the method for IMSI, comprising:
C2G international roaming gateway judges according to the positional information of C2G international roaming reporting of user whether the IMSI of C2G international roaming user registration is the IMSI of the preferred Sponsor of system's setting;
The IMSI of the preferred Sponsor that is provided with if not system; C2G international roaming gateway judge upgrade this position of C2G international roaming user time and last time successful switch IMSI the time interval whether greater than predetermined threshold; If be not more than, then do not switch C2G international roaming user's IMSI.
According to one embodiment of the method for the invention; Also comprise: if this position of C2G international roaming user upgrade time and last time successful switch IMSI interval greater than predetermined threshold; The VLR address that C2G international roaming gateway the is judged C2G international roaming user place whether VLR address with the system storage is identical; If identical, then do not switch C2G international roaming user's IMSI; If different, then switch C2G international roaming user's IMSI.
According to one embodiment of the method for the invention, also comprise: if the IMSI of the preferred Sponsor that the IMSI of C2G international roaming user registration is a system to be provided with does not then switch C2G international roaming user's IMSI; Or the time of C2G international roaming gateway record C2G international roaming user successful switch last time IMSI.
According to one embodiment of the method for the invention; Also comprise: switch to the IMSI of preferred Sponsor as C2G international roaming user after; If the IMSI belonging network of preferred Sponsor covers in the signal difference or the no signal of position; C2G international roaming user selects IMSI login alternative network through STK (SIM TOOL KIT, the STK) menu at terminal, and system does not issue to C2G international roaming user and switches to preferred IMSI instruction; After C2G international roaming customer location is moved, switch to the IMSI login of preferred Sponsor again.
The C2G international roaming user that one aspect of the present invention provides is switched the method for IMSI; System can be provided with the time interval of twice automatic switchover; Guarantee that the user IMSI can frequently not take place in the time switches being provided with; Prevent that the user from the situation that IMSI switches back and forth taking place when the forntier region, solve the switching problem of forntier region, and the frequent switching problem of Sponsor quantity when increasing.
Further; Through the manual IMSI login alternative network of selecting of the STK menu at terminal; System does not issue to C2G international roaming user and switches to preferred IMSI instruction; Thereby prevent the endless loop of switching IMSI, be implemented in that the user still can and use professional through the normal login of other alternative network under the second-rate situation of preferred network.If customer location is moved, VLR address has become, and then system can rejudge the IMSI that whether need reselect preferred Sponsor.Thereby guarantee to let the user utilize the IMSI logging in network of preferred Sponsor to greatest extent.
Another technical problem that the present invention will solve provides a kind of C2G international roaming user gateway, can avoid between IMSI, frequently switching.
According to a further aspect in the invention, a kind of C2G international roaming gateway is provided, comprises:
The IMSI handover module is used to receive IMSI and switches message, carries out the IMSI handover operation;
Preferred IMSI judge module; Be used for judging according to the positional information of C2G international roaming reporting of user whether the IMSI of C2G international roaming user registration is the IMSI of the preferred Sponsor of system's setting; The IMSI of the preferred Sponsor that is provided with if not system, then transmission time interval is judged message;
The switching interval judge module; The time interval that is used to receive from preferred IMSI judge module is judged message; Judge upgrade this position of C2G international roaming user time and last time successful switch IMSI the time interval whether greater than predetermined threshold; If be not more than, then do not send IMSI and switch message to the IMSI handover module.
According to an embodiment of gateway of the present invention, the switching interval judge module judge upgrade this position of C2G international roaming user time and last time successful switch IMSI interval greater than predetermined threshold, then send VLR address judgement message;
Gateway also comprises:
The VLR address judge module; The VLR address that is used to receive from the switching interval judge module is judged message; The VLR address of the judging C2G international roaming user place whether VLR address with the system storage is identical, if identical, then do not send IMSI to the IMSI handover module and switches message; If different, then send IMSI and switch message to the IMSI handover module.
According to an embodiment of gateway of the present invention, when preferred IMSI judge module is the IMSI of the preferred Sponsor that is provided with of system as the IMSI that judges C2G international roaming user registration, then do not send IMSI switching message to the IMSI handover module.
According to an embodiment of gateway of the present invention, the switching interval judge module also writes down the time of C2G international roaming user successful switch last time IMSI.
Gateway provided by the invention; The switching interval judge module is judged the time interval of twice automatic switchover; Guarantee that the user IMSI can frequently not take place in the time switches being provided with; Prevent that the user from the situation that IMSI switches back and forth taking place when the forntier region, solve the switching problem of forntier region, and the frequent switching problem of Sponsor quantity when increasing.
The system that the present invention also provides a kind of C2G international roaming user to switch IMSI comprises above-mentioned C2G international roaming gateway, OTA (Over The Air, air download) platform and GSM short message service center;
When C2G international roaming gateway carries out the IMSI handover operation, send IMSI indication, the IMSI information of wherein carrying preferred Sponsor switched to the OTA platform;
The OTA platform receives and switches the IMSI indication, constructs the OTA note, comprises the IMSI information of preferred Sponsor in the OTA note, and the OTA note is sent to GSM short message service center;
The OTA note is received by GSM short message service center, transmits the OTA note through the roaming place to the user.
Description of drawings
Fig. 1 illustrates the network topological diagram that C2G international roaming user is switched the system of IMSI;
Fig. 2 illustrates the flow chart of an embodiment that C2G international roaming user of the present invention is switched the method for IMSI;
Fig. 3 illustrates the flow chart of another embodiment that C2G international roaming user of the present invention is switched the method for IMSI;
Fig. 4 illustrates user IMSI switching flow figure;
Fig. 5 illustrates the structure chart of an embodiment of C2G international roaming gateway of the present invention;
Fig. 6 illustrates the structure chart of another embodiment of C2G international roaming gateway of the present invention.
Embodiment
With reference to the accompanying drawings the present invention is more comprehensively described, exemplary embodiment of the present invention wherein is described.
Fig. 1 illustrates the network topological diagram that C2G international roaming user is switched the system of IMSI.As shown in Figure 1, in network, comprise: terminal/STK dual-mode card 14, roaming place GSM network 15, C2G international roaming gateway 11, OTA platform 12, GSM short message service center 13.Wherein terminal 14 can be common single GSM terminal or CDMA/GSM dual-mode terminal.
The function of each several part is following:
Terminal/STK dual-mode card 14: be used for initiating location registers and the reception of OTA note, carry out the IMSI change action of network side appointment to network; The STK menu can also be provided, and manually actuated this menu of user is selected the IMSI login;
Roaming place GSM network 15: GSM is provided access service;
C2G international roaming gateway 11: the correspondence table of the relevant information of storage roaming countries and regions and preferred G net Sponsor; The time that recording user successfully automaticallyes switch; Carry out logic determines, whether the decision user carries out IMSI switches; The user is switched IMSI if desired, and then send and switch the IMSI indication to the OTA platform, the IMSI information of wherein carrying preferred Sponsor, the corresponding OTA note of switching IMSI of indication OTA platform 12 structures sends to terminal/STK dual-mode card 14;
OTA platform 12: structure switches the OTA note of IMSI information, comprises the IMSI information of preferred Sponsor in the OTA note, and the OTA note is sent to short message service center 13, is transmitted to terminal/STK dual-mode card 14 by short message service center 13;
GSM short message service center 13: after receiving the OTA note, give terminal/STK dual-mode card 14 to the OTA note that the user transmits 12 generations of OTA platform through the roaming place.
Fig. 2 illustrates the flow chart of an embodiment that C2G international roaming user of the present invention is switched the method for IMSI.
As shown in Figure 2, in step 202, C2G international roaming gateway judges according to the positional information of C2G international roaming reporting of user whether the IMSI of C2G international roaming user registration is the IMSI of the preferred Sponsor of system's setting.
In step 204; The IMSI of the preferred Sponsor that is provided with if not system; C2G international roaming gateway judge upgrade this position of C2G international roaming user time and last time successful switch IMSI the time interval whether greater than predetermined threshold; If be not more than, then do not switch C2G international roaming user's IMSI.C2G international roaming gateway can write down the time of C2G international roaming user successful switch last time IMSI, as IMSI switching judging foundation.
In the foregoing description; System can be provided with the time interval of twice automatic switchover, guarantees that the user IMSI can frequently not take place in the time switches being provided with, and prevents that the user from the situation that IMSI switches back and forth taking place when the forntier region; Solve the switching problem of forntier region; And the frequent switching problem of Sponsor quantity when increasing, thereby improve user experience, reduce customer complaint.
According to one embodiment of present invention; Switch to the IMSI of preferred Sponsor as C2G international roaming user after; If the IMSI belonging network of preferred Sponsor covers in the signal difference or the no signal of this position; C2G international roaming user selects IMSI login alternative network through the STK menu at terminal, and system does not issue to C2G international roaming user and switches to preferred IMSI instruction; After C2G international roaming customer location is moved, switch to the IMSI login of preferred Sponsor again.
When CDMA user is in the C2G international roaming; When the network of roaming place is GSM, a plurality of Sponsor are arranged, switch to the IMSI of the preferred Sponsor of system's setting so by the residing positional information commander user of network based user if operator contracts; The action of switching IMSI that network indication and successful execution have been received in the terminal; If but switch the very poor or no signal covering of this IMSI belonging network of back at this position signalling, the user can manually return and switch to other IMSI, the login alternative network; System can correctly judge, does not issue switching command to the user, prevents the switching endless loop; After guaranteeing that simultaneously customer location is moved, can switch to the IMSI login of preferred Sponsor again.
Fig. 3 illustrates the flow chart of another embodiment that C2G international roaming user of the present invention is switched the method for IMSI.
As shown in Figure 3, in step 302, when CDMA user roams into the world that no cdma network covers/area; At first utilize the IMSI of acquiescence to carry out location registers, register the positional information of successfully back C2G international roaming gateway according to terminal to report, tabling look-up draws the IMSI of preferred Sponsor; Whether the IMSI that judges the preferred Sponsor of system's setting is the IMSI that the active user uses; If, then need not switch user IMSI, flow process finishes; If not, then execution in step 304.
Whether step 306, the VLR address of judging active user the place VLR address with the system storage be identical, switches the IMSI flow process if then need not start, if not then starting the IMSI switching flow.
Fig. 4 illustrates user IMSI switching flow figure.
As shown in Figure 4, in step 402, C2G international roaming gateway judges need be switched IMSI, sends MSI indication, the IMSI information of wherein carrying preferred Sponsor switched to the OTA platform.
In step 404, OTA platform structure OTA note is sent the OTA note to the GSM sms center.The IMSI information that comprises preferred Sponsor in the OTA note.
In step 406, after the OTA note is received by GSM short message service center, transmit the OTA note to the user through the roaming place.
In step 408, terminal/STK card is received the OTA note, from the OTA note, extracts the IMSI information of preferred Sponsor, carries out IMSI and switches.
Fig. 5 illustrates the structure chart of an embodiment of C2G international roaming gateway of the present invention.As shown in Figure 5, this gateway comprises preferred IMSI judge module 51, switching interval judge module 52 and IMSI handover module 53.Wherein, IMSI handover module 53 receives IMSI and switches message, carries out the IMSI handover operation; Preferred IMSI judge module 51 judges according to the positional information of C2G international roaming reporting of user whether the IMSI of C2G international roaming user registration is the IMSI of the preferred Sponsor of system's setting; The IMSI of the preferred Sponsor that is provided with if not system, then transmission time interval is judged message; Switching interval judge module 52 receives the time interval judgement message from preferred IMSI judge module 51; Judge upgrade this position of C2G international roaming user time and last time successful switch IMSI the time interval whether greater than predetermined threshold; If be not more than, then do not send IMSI and switch message to IMSI handover module 53.If greater than predetermined threshold, can send IMSI to IMSI handover module 53 and switch message.
In the foregoing description; The switching interval judge module is judged the time interval of twice automatic switchover, guarantees that the user IMSI can frequently not take place in the time switches being provided with, and prevents that the user from the situation that IMSI switches back and forth taking place when the forntier region; Solve the switching problem of forntier region; And the frequent switching problem of Sponsor quantity when increasing, thereby improve user experience, reduce customer complaint.
Fig. 6 illustrates the structure chart of another embodiment of C2G international roaming gateway of the present invention.As shown in Figure 6, this gateway comprises preferred IMSI judge module 51, switching interval judge module 62, VLR address judge module 64 and IMSI handover module 63.Preferred IMSI judge module 51 judges according to the positional information of C2G international roaming reporting of user whether the IMSI of C2G international roaming user registration is the IMSI of the preferred Sponsor of system's setting; The IMSI of the preferred Sponsor that is provided with if not system; Then transmission time interval is judged message; The IMSI of the preferred Sponsor that if the IMSI of C2G international roaming user registration is a system to be provided with, then transmission time interval is not judged message, does not switch C2G international roaming user's IMSI; Switching interval judge module 62 receives the time interval judgement message from preferred IMSI judge module 51; Judge upgrade this position of C2G international roaming user time and last time successful switch IMSI the time interval whether greater than predetermined threshold; If be not more than, then do not send VLR address and judge message; If greater than predetermined threshold, then send VLR address and judge message; VLR address judge module 64 receives from the VLR address of switching interval judge module 62 judges message; The VLR address of the judging C2G international roaming user place whether VLR address with the system storage is identical; If identical, then do not send IMSI and switch message to IMSI handover module 63; If different, then send IMSI and switch message to IMSI handover module 63.
Introduce application examples of the present invention below.
Application examples 1:
State-owned signatory Sponsor A and the Sponsor B of two families of subjunctive.Be provided with in the system and roam into the preferably IMSI of Sponsor B of France.That preset in certain CMDA user's the UIM card is the GSM IMSI of Sponsor A, and the STK menu provides the IMSI of Sponsor A and SponsorB available.Suppose that this CDMA user roams into France, according to the rule that is provided with in advance, C2G international roaming gateway is judged the IMSI service that should use Sponsor B in France, then triggers the IMSI switching flow, and user's successful switch is to the IMSI logging in network of Sponsor B.After this, the user feels poor signal even the no signal of Sponsor B, so get into the STK menu immediately, has selected the GSM IMSI of Sponsor A by hand, again logging in network.The time interval of supposing the time of login this time and switching IMSI just now was less than N minute.
C2G international roaming gateway is received user's position register information once more, judges at first whether this IMSI is the IMSI of optimum system choosing Sponsor, and answer is carried out next step for not;
C2G international roaming gateway judge upgrade this time position time and last time successful switch IMSI the time interval whether in N minute (N's is big or small configurable); Answer is for being; Do not start switching flow, flow process finishes, and allows the user to adopt the GSM IMSI login of SponsorA.
Application examples 2:
State-owned signatory Sponsor A and the Sponsor B of two families of subjunctive.Be provided with in the system and roam into the preferably IMSI of Sponsor B of France.That preset in certain CMDA user's the UIM card is the GSM IMSI of Sponsor A, and the STK menu provides the IMSI of Sponsor A and SponsorB available.Suppose that this CDMA user roams into France, according to the rule that is provided with in advance, C2G international roaming gateway is judged the IMSI service that should use Sponsor B in France, then triggers the IMSI switching flow, and user's successful switch is to the IMSI logging in network of Sponsor B.The user feels poor signal even the no signal of Sponsor B, so get into the STK menu, has selected the GSM IMSI of Sponsor A by hand, again logging in network.After the user used a period of time, the VLR in same country (Visitor Location Register, VLR Visitor Location Register) position changed, and initiates location registers again, the time of this moment with switched just now IMSI interval greater than N minute.So C2G international roaming gateway is received user's position register information once more, judge at first whether this IMSI is the IMSI of optimum system choosing Sponsor, answer is carried out next step for not;
C2G international roaming gateway judge upgrade this time position time and last time successful switch IMSI the time interval whether in N minute (N's is big or small configurable), answer is to deny, and carries out next step;
The VLR address that C2G international roaming gateway the is judged active user place whether VLR address with the system storage is identical, and answer starts switching flow for not, makes the user come back to the GSM IMSI login of preferred Sponsor B.
In superincumbent embodiment and the application examples, can pass through the correspondence table that relevant information and preferred G in a roaming of network side record countries and regions net Sponsor, and the time of record last user successful switch IMSI is accomplished function corresponding.Under the normal condition; The positional information that C2G international roaming gateway reports when doing location registers for the first time through the user; Tabling look-up draws the IMSI which Sponsor the user should select, and according to certain logic determines, indicates the user to switch IMSI if desired; Then this IMSI information is passed to terminal/STK dual-mode card through the OTA technology; Carry out the switching of IMSI according to indication information behind the terminal/snap fit onto the OTA note, switch and initiate location registers again after accomplishing, thereby accomplish the process that the user selects Sponsor.In particular cases; After switching the IMSI success as the user; Can't obtain good signal and cover, can select other network of IMSI login by hand immediately, this moment, network side can be accepted the manual IMSI login of selecting of user; Whether no matter the IMSI with the preferred Sponsor of default is identical; Can not issue the instruction of switching IMSI again, thereby prevent the endless loop of switching IMSI, be implemented in that the user still can and use professional through the normal login of other alternative network under the second-rate situation of preferred network.If customer location is moved, VLR address has become, and then system can rejudge the IMSI that whether need reselect preferred Sponsor.Thereby guarantee to let the user utilize the IMSI logging in network of preferred Sponsor to greatest extent.
Description of the invention provides for example with for the purpose of describing, and is not the disclosed form that exhaustively perhaps limit the invention to.A lot of modifications and variation are obvious for those of ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment that have various modifications that the present invention's design is suitable for special-purpose.
Claims (10)
1. the method for a C2G international roaming user switching international movable user identification code IMSI is characterized in that, comprising:
C2G international roaming gateway judges according to the positional information of said C2G international roaming reporting of user whether the IMSI of said C2G international roaming user registration is the IMSI of the preferred Sponsor of system's setting;
The IMSI of the preferred Sponsor that is provided with if not system; Said C2G international roaming gateway judge upgrade this position of said C2G international roaming user time and last time successful switch IMSI the time interval whether greater than predetermined threshold; If be not more than, then do not switch said C2G international roaming user's IMSI.
2. method according to claim 1 is characterized in that, also comprises:
If this position of said C2G international roaming user upgrade time and last time successful switch IMSI interval greater than said predetermined threshold; The VLR address that said C2G international roaming gateway the is judged said C2G international roaming user place whether VLR address with the system storage is identical; If identical, then do not switch said C2G international roaming user's IMSI; If different, then switch said C2G international roaming user's IMSI.
3. method according to claim 1 and 2 is characterized in that, also comprises:
If the IMSI of the preferred Sponsor that the IMSI of said C2G international roaming user registration is a system to be provided with does not then switch said C2G international roaming user's IMSI.
4. method according to claim 1 is characterized in that, also comprises:
Said C2G international roaming gateway writes down the time of said C2G international roaming user successful switch last time IMSI.
5. method according to claim 1 is characterized in that, also comprises:
After said C2G international roaming user switches to the IMSI of preferred Sponsor; If the IMSI belonging network of said preferred Sponsor covers in the signal difference or the no signal of said position; Said C2G international roaming user selects IMSI login alternative network through the STK menu at terminal, and system does not issue to said C2G international roaming user and switches to preferred IMSI instruction;
After said C2G international roaming customer location is moved, switch to the IMSI login of preferred Sponsor again.
6. a C2G international roaming gateway is characterized in that, comprising:
International mobile subscriber identity IMSI handover module is used to receive IMSI and switches message, carries out the IMSI handover operation;
Preferred IMSI judge module; Be used for judging according to the positional information of C2G international roaming reporting of user whether the IMSI of said C2G international roaming user registration is the IMSI of the preferred Sponsor of system's setting; The IMSI of the preferred Sponsor that is provided with if not system, then transmission time interval is judged message;
The switching interval judge module; The time interval that is used to receive from said preferred IMSI judge module is judged message; Judge upgrade this position of said C2G international roaming user time and last time successful switch IMSI the time interval whether greater than predetermined threshold; If be not more than, then do not send IMSI and switch message to said IMSI handover module.
7. gateway according to claim 6 is characterized in that,
Said switching interval judge module judge upgrade this position of said C2G international roaming user time and last time successful switch IMSI interval greater than said predetermined threshold, then send VLR address judgement message;
Said gateway also comprises:
The VLR address judge module; The VLR address that is used to receive from said switching interval judge module is judged message; The VLR address of the judging said C2G international roaming user place whether VLR address with the system storage is identical, if identical, then do not send IMSI to said IMSI handover module and switches message; If different, then send IMSI and switch message to said IMSI handover module.
8. gateway according to claim 6; It is characterized in that; When said preferred IMSI judge module is the IMSI of the preferred Sponsor that is provided with of system as the IMSI that judges said C2G international roaming user registration, does not then send IMSI and switch message to said IMSI handover module.
9. gateway according to claim 6 is characterized in that, said switching interval judge module also writes down the time of said C2G international roaming user successful switch last time IMSI.
10. the system of a C2G international roaming user switching international movable user identification code IMSI is characterized in that, comprising: like any described C2G international roaming gateway, air download OTA platform and a GSM short message service center in the claim 6 to 7;
When said C2G international roaming gateway carries out the IMSI handover operation, send IMSI indication, the IMSI information of wherein carrying preferred Sponsor switched to said OTA platform;
Said OTA platform receives said switching IMSI indication, and structure OTA note comprises the IMSI information of preferred Sponsor in the said OTA note, and said OTA note is sent to said GSM short message service center;
Said OTA note is received by said GSM short message service center, transmits said OTA note through the roaming place to the user.
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| CN103298075A (en) * | 2013-06-05 | 2013-09-11 | 天翼电信终端有限公司 | Fast network selection method of dual-mode terminal |
| CN106170996A (en) * | 2015-02-11 | 2016-11-30 | 华为技术有限公司 | A kind of network registering method and terminal |
| CN109495875A (en) * | 2019-01-11 | 2019-03-19 | Oppo广东移动通信有限公司 | SIM card selection method, device, electronic equipment and storage medium |
| CN114666782A (en) * | 2020-12-03 | 2022-06-24 | 中移物联网有限公司 | Card number switching method and device, electronic equipment and positioning system |
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| CN103298075A (en) * | 2013-06-05 | 2013-09-11 | 天翼电信终端有限公司 | Fast network selection method of dual-mode terminal |
| CN103298075B (en) * | 2013-06-05 | 2015-12-02 | 天翼电信终端有限公司 | The method of dual-mode terminal fast network selection |
| CN106170996A (en) * | 2015-02-11 | 2016-11-30 | 华为技术有限公司 | A kind of network registering method and terminal |
| CN109495875A (en) * | 2019-01-11 | 2019-03-19 | Oppo广东移动通信有限公司 | SIM card selection method, device, electronic equipment and storage medium |
| CN109495875B (en) * | 2019-01-11 | 2021-03-12 | Oppo广东移动通信有限公司 | SIM card selection method and device, electronic equipment and storage medium |
| CN114666782A (en) * | 2020-12-03 | 2022-06-24 | 中移物联网有限公司 | Card number switching method and device, electronic equipment and positioning system |
| CN114666782B (en) * | 2020-12-03 | 2023-12-12 | 中移物联网有限公司 | Card number switching method and device, electronic equipment and positioning system |
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| Publication number | Publication date |
|---|---|
| CN102547624B (en) | 2015-11-25 |
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