CN108271145B - Method and equipment for registering network based on multiple cards - Google Patents
Method and equipment for registering network based on multiple cards Download PDFInfo
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- CN108271145B CN108271145B CN201611265409.1A CN201611265409A CN108271145B CN 108271145 B CN108271145 B CN 108271145B CN 201611265409 A CN201611265409 A CN 201611265409A CN 108271145 B CN108271145 B CN 108271145B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/04—Registration at HLR or HSS [Home Subscriber Server]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Abstract
The invention discloses a method for registering a network based on multiple cards.A User Equipment (UE) acquires respective roaming states of more than two user identification cards; and when the roaming states of the more than two user identification cards are inconsistent, the UE searches the network again according to a preset rule and registers the network to the searched network. Also discloses a device based on the multi-card registration network.
Description
Technical Field
The invention relates to the field of mobile network registration, in particular to a method and equipment for registering a network based on multiple cards.
Background
In the existing wireless communication, with the continuous development of the mobile terminal technology, many User Equipments (UEs) have more than two subscriber identity cards, and after the UE is powered on, the two subscriber identity cards need to register to the network respectively. Currently, according to the third generation partnership project (3GPP) protocol, the general flow of UE power-on registration is shown in fig. 1 and includes:
103, obtaining information of cells near the cell through system information broadcast, wherein the UE selects a cell with the best signal to camp on;
On one hand, after a user crosses a region such as a national boundary, more than two user identification cards in the UE may be partially registered as a non-roaming network, and the other part is registered as a roaming network; alternatively, a local roaming network and a previous roaming network are registered, i.e. it may occur that different subscriber identity cards in the UE register with networks in different areas. This is because when the network in the area where the subscriber identity card is located has both the home network and the available roaming area network, or belongs to two roaming networks in different areas, the terminal searches the network registered last time according to the priority order of the roaming network systems. As a result, even if the location of the UE is already in the home network or the local roaming network, the UE registers the previous roaming network and does not re-search for the network for a long time, which results in a high roaming cost for the terminal to use the roaming network for a long time; if the registered roaming network is a third generation (3G) communication network, on the contrary, the fourth generation (4G) communication network where the roaming network is located cannot be registered, the internet surfing speed is very low, and the operations such as taxi taking and news reading cannot be performed, so that the user experience is influenced.
On the other hand, if the area where the UE is located is in the border between two cells, such as in the border between two countries, the network is unstable, and at this time, the network registration is easily interrupted, and when the process of searching and registering the network again after interruption, the UE is easily able to search and register to the previously registered network again, so that the UE does not search for the home network or a more suitable network.
The existing way for the UE to find and register with the network may cause the following problems to exist: 1) the UE uses a plurality of different user identification cards, and returns to the home area from the roaming area, one card can quickly return to the home network, but the other card is still in the roaming network. 2) For the UE, if the user identification card is available in a certain region, a roaming network and a home network, the user identification card is easy to register to the roaming network and cannot be quickly registered to the home network.
Disclosure of Invention
In view of this, embodiments of the present invention are intended to provide a method and an apparatus for registering a network based on multiple cards, so that a subscriber identity card registered in a roaming network can be switched to a home network in time.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is implemented as follows:
the embodiment of the invention provides a method for registering a network based on multiple cards, which comprises the following steps:
UE obtains respective roaming states of more than two user identification cards;
and when the roaming states of the more than two user identification cards are inconsistent, the UE searches the network again according to a preset rule and registers the network to the searched network.
In the above scheme, the acquiring, by the UE, the roaming states of the two or more subscriber identity cards includes:
for each subscriber identity card, the UE acquires a first Mobile Country Code (MCC) of a network in which the subscriber identity card is registered;
when the first MCC is consistent with the MCC stored in the subscriber identity card, the subscriber identity card is in a non-roaming state;
and when the first MCC is not consistent with the MCC stored in the subscriber identity card, the subscriber identity card is in a roaming state.
In the above scheme, after the UE obtains respective roaming states of two or more subscriber identity cards, the method further includes: the user identification card in the non-roaming state sends the MCC of the network registered by the user identification card to the user identification card in the roaming state, and the user identification card in the roaming state compares the MCC of the network registered by the user identification card in the roaming state with the received MCC of the network registered by the user identification card in the non-roaming state.
In the above scheme, after the UE re-searches for a network according to a preset rule and registers, the method further includes: and the UE generates and stores the corresponding relation among the MCC of the UE registration network, the network type priority order corresponding to the MCC and the public land mobile network PLMN.
In the foregoing solution, after generating and storing the corresponding relationship, the method further includes:
and when the UE is interrupted with the registered network, selecting the network for registration according to the stored corresponding relation.
In the above scheme, the MCCs stored in the two or more subscriber identity cards are identical.
The embodiment of the invention also provides equipment based on a multi-card registration network, which comprises: the system comprises an acquisition module, a card judgment module, a network searching module and a registration module; wherein the content of the first and second substances,
the acquisition module is used for acquiring respective roaming states of more than two user identification cards;
the card judging module is used for judging whether the roaming states of the more than two user identification cards are consistent or not;
the network searching module is used for searching the network again according to a preset rule;
and the registration module is used for registering to the searched network.
In the above scheme, the obtaining module is further configured to obtain a first MCC of a network in which each subscriber identity card is registered;
the apparatus further comprises: a roaming judging module, configured to judge whether the subscriber identity card is in a roaming state, where when the first MCC is consistent with the MCC stored in the subscriber identity card, the subscriber identity card is in a non-roaming state; and when the first MCC is not consistent with the MCC stored in the subscriber identity card, the subscriber identity card is in a roaming state.
In the above solution, the apparatus further includes: a communication module, a matching module; wherein:
the communication module is used for controlling the subscriber identity module in the non-roaming state to send the MCC of the network registered by the subscriber identity module to the subscriber identity module in the roaming state;
the matching module is used for comparing the MCC of the network registered by the subscriber identity card in the roaming state with the MCC of the network registered by the received subscriber identity card in the non-roaming state, and informing the network searching module.
In the foregoing solution, the device further includes a storage module, configured to generate and store a correspondence between an MCC of a UE registration network, a network type priority order corresponding to the MCC, and a public land mobile network PLMN.
In the foregoing solution, the registration module is further configured to select a network for registration according to the stored correspondence when the UE and the registered network are interrupted.
In the above scheme, the sim card module is further configured to store the MCC in the sim card.
According to the method for registering the network based on the multiple cards, provided by the embodiment of the invention, the UE acquires respective roaming states of more than two user identification cards; and when the roaming states of the more than two user identification cards are inconsistent, the UE searches the network again according to a preset rule and registers the network to the searched network. Therefore, when passing through the junction of the areas with both roaming networks and non-roaming networks, the embodiment of the invention can find that the roaming states of different subscriber identity cards are inconsistent in time when one part of the subscriber identity cards are in the non-roaming state and the other part of the subscriber identity cards belong to the roaming state, and re-search and register the subscriber identity cards in the roaming state to the non-roaming networks, thereby greatly shortening the time for searching the non-roaming networks and reducing the time for using the roaming networks by the users, thereby avoiding high roaming cost, avoiding poor network environment and improving user experience; in addition, the embodiment of the invention can search the stored PLMN when passing through areas such as gateways where networks are unstable and are easy to drop, so that the PLMN is preferentially registered to a non-roaming network and can avoid being registered to a roaming network again.
Drawings
Fig. 1 is a schematic flow chart of a UE starting up to register a network;
fig. 2 is a schematic flow chart illustrating an implementation of a method for registering a network based on multiple cards according to an embodiment;
FIG. 3 is a schematic flow chart illustrating an implementation of a multi-card based network registration method according to a second embodiment;
FIG. 4 is a schematic diagram illustrating a structure of a device based on a multi-card registration network according to a third embodiment;
fig. 5 is a schematic structural diagram of a device of the fourth embodiment based on a multi-card registration network.
Detailed Description
Example one
In this embodiment, an implementation flow of the method for registering a network based on multiple cards is shown in fig. 2, and includes the following steps:
specifically, first, for the time when the UE acquires the roaming states of two or more subscriber identity cards, a fixed time may be set, or an acquisition condition may be set, for example: the method comprises the steps of starting up and acquiring, and correspondingly acquiring a roaming state after a user identification card re-registers a network; the Subscriber Identity Module may be a Subscriber Identity Module (SIM) or a Universal Subscriber Identity Module (USIM).
Here, the method of acquiring the roaming state of each subscriber identity card may be to query the operator, and confirm whether each subscriber identity card belongs to the roaming state through the response of the operator; or each subscriber identity card extracts MCC from PLMN information in a network registered at present and compares the MCC with the MCC stored in the subscriber identity card in advance to judge whether the subscriber identity card is in a roaming state; when the two are consistent, the user identification card is in a non-roaming state; when the two are not consistent, the user identification card is in a roaming state.
When a plurality of subscriber identity cards exist in the UE, the roaming states of all the subscriber identity cards can be respectively determined.
When the roaming states of more than two subscriber identity cards are not consistent, a Non-access stratum (NAS) of the UE can be notified; the UE stores a mapping table of MCCs and network system priority orders, where the mapping table may be set by a user, may also be factory-owned by the UE, may set priorities of different MCCs, and may also set priorities of different network systems in each MCC, for example, as shown in table 1, table 1 is the MCCs of two user identification cards in the searched UE and corresponding network system priorities, and the two MCCs are 460 and 454, respectively.
TABLE 1
In table 1, when the MCC is 460, the priority of the network system correspondingly searched is LTE-TDSCDMA-GSM; when the MCC is 454, the priority of the network system correspondingly searched is LTE-WCDMA-GSM. The UE searches a network again according to a preset rule, the preset rule is that PLMN is selected according to the mapping table stored in the UE, and PLMN of a roaming user identification card is searched again, wherein the PLMN can be LTE with MCC of 460, then TDSCDMA and GSM under the MCC are searched, if the PLMN is not searched, LTE with MCC of 454 is searched next, and then WCDMA and GSM under the MCC are searched; or selecting the MCC of the non-roaming subscriber identity card according to the received roaming and non-roaming information sent by the subscriber identity card, and then selecting the corresponding network system in the MCC according to the network system priority in table 1, for example, for the subscriber identity card of the chinese telecom, when the network needs to be re-registered, the MCC with 460 is searched preferentially, and then the network is searched according to the sequence of LTE-WCDMA-GSM, and the search sequence of the PLMN is: 46000 (representing a China Mobile GSM network), 46002 (representing a SIM card network of China Mobile 134/159), 46007 (representing a China Mobile TD-SCDMA network), 46011 (representing China telecom FDD-LTE), 46003 (representing a China telecom CDMA network).
And when the corresponding network is searched, the UE registers the roaming user identification card to the searched network.
The MCCs stored in the two or more subscriber identity cards may be the same, and may be NAS that searches for a network according to a preset rule.
By adopting the method, the user identification card in the roaming state can search and register the non-roaming network again, the time for finding the non-roaming network is greatly shortened, and the use of the roaming network by the user is reduced, so that high roaming cost is avoided, bad network environment is avoided, and user experience is improved.
Example two
On the basis of the first embodiment, the present embodiment provides more specific processing manners and flows, such as how to obtain the roaming states of more than two subscriber identity cards, how to obtain whether the roaming states of more than two subscriber identity cards are consistent, and the like; the implementation flow of the method for registering a network based on multiple cards is shown in fig. 2, and comprises the following steps:
specifically, the MCC information is extracted from the currently registered PLMN information by each subscriber identity card, for example, the subscriber identity card 1 of the UE is inserted into a chinese telecom card, the subscriber identity card 2 is inserted into a chinese mobile card, the PLMNs of the subscriber identity card 1 and the subscriber identity card 2 are respectively obtained, and the MCC therein is extracted, where the PLMN registered on the subscriber identity card 1 is 45403, and the extracted MCC is 454; the PLMN registered in the subscriber identity card 2 is 46000, and the extracted MCC is 460.
specifically, the first MCC registered in each extracted subscriber identity card is compared with the MCCs stored in each subscriber identity card, and whether each subscriber identity card is in a roaming state is determined, for example: the MCC extracted by the subscriber identity card 1 is 454, which is inconsistent with the stored operator home location MCC460 and belongs to the roaming state, and step 304 is executed; the MCC extracted by the subscriber identity card 2 is 460, and if the MCC is consistent with the MCC460 stored in the operator home location, the non-roaming state is obtained, and step 303 is executed.
specifically, when some subscriber identity cards belong to a non-roaming state and another subscriber identity card belongs to a roaming state, the subscriber identity card in the non-roaming state sends the MCC extracted by the subscriber identity card to the subscriber identity card in the roaming state. For example, the subscriber identity card 2 transmits the extracted MCC value 460 to the subscriber identity card 1.
specifically, after receiving the MCC sent by the subscriber identity card in the non-roaming state, the subscriber identity card in the roaming state compares the MCC with the MCC extracted by the subscriber identity card in the non-roaming state, for example: after receiving the MCC460 sent by the subscriber identity card 2, the subscriber identity card 1 compares the MCC460 with the MCC454 extracted by itself.
specifically, when the comparison result in step 306 is inconsistent, the UE may be notified by selecting a preset network system priority order by the subscriber identity module in the roaming state, or may be notified of the inconsistent result of the UE, the UE selects the preset network system priority order, and the UE may search for a network according to the preset network system priority order.
Storing a mapping table of MCCs and network system priority orders in the UE, where the mapping table may be set by a user, may also be factory-owned by the UE, may set priorities of different MCCs, and may also set priorities of different network systems in each MCC, for example, as shown in table 1, where table 1 is the MCCs of two user identification cards in the searched UE and corresponding network system priorities, and the two MCCs are 460 and 454, respectively; when the MCC is 460, the priority of the network system correspondingly searched is LTE-TDSCDMA-GSM, and when the MCC is 454, the priority of the network system correspondingly searched is LTE-WCDMA-GSM. The UE searches a network again according to a preset rule, the preset rule is that PLMN is selected according to the mapping table stored in the UE, and PLMN of a roaming user identification card is searched again, wherein the PLMN can be LTE with MCC of 460, then TDSCDMA and GSM under the MCC are searched, if the PLMN is not searched, LTE with MCC of 454 is searched next, and then WCDMA and GSM under the MCC are searched; or selecting the MCC of the non-roaming subscriber identity card according to the received roaming and non-roaming information sent by the subscriber identity card, and then selecting the corresponding network system in the MCC according to the network system priority in table 1, for example, for the subscriber identity card of the chinese telecom, when the network needs to be re-registered, the MCC with the priority of 460 is searched, and then the MCC is searched according to the sequence of LTE-WCDMA-GSM, and the search sequence of the PLMN is as follows: 46000. 46002, 46007, 46011, 46003.
And when the corresponding network is searched, the UE registers the roaming user identification card to the searched network.
specifically, if the network is registered in the subscriber identity card in the roaming state in step 307, the MCC of the network in which the UE is registered, the information of the PLMN corresponding to the MCC, and two or more combinations in the priority order of the MCC network format are combined to generate a corresponding relationship and stored, the stored form is not limited, and may be a form of a table, for example, as shown in table 2, and stored in the UE, for example, a network whose PLMN is 46003 is registered in step 307 for the subscriber identity card 1 of the chinese telecom, and stored in a manner of storing 460-LTE-TDSCDMA-GSM-46003 according to the priority order of the MCC-network format-PLMN.
TABLE 2
Specifically, when the UE and the registered network are disconnected and a network drop phenomenon occurs, the network is preferentially searched according to the stored MCC, the corresponding PLMN and the network system priority of the record corresponding to the relationship, for example, the PLMN46003 with the MCC of 460 is searched first, and when the network registration in the stored corresponding relationship fails, the network is then registered according to a normal procedure. The network drop phenomenon may be a connection interruption of the network, or a network drop of the UE at a boundary between a home area and a roaming area.
When the search registration is initiated again after the upper segment in the network, the home network of the operator can be preferentially registered, and the roaming network is prevented from being registered.
The number of the subscriber identity cards is more than two, and the MCCs stored in the subscriber identity cards can be the same.
EXAMPLE III
In the present embodiment, a structural schematic of an apparatus using the method of the above embodiment is shown in fig. four, and the apparatus includes: an acquisition module 41, a card judgment module 42, a network searching module 43, and a registration module 44; wherein the content of the first and second substances,
the acquiring module 41 is configured to acquire respective roaming states of more than two subscriber identity cards;
specifically, the acquiring module 41 may first acquire the roaming state time of each of the two or more subscriber identity cards, and the acquired time may be set to be a fixed time or may be a conditional time.
The method for acquiring the roaming status of the two or more subscriber identity cards by the acquiring module 41 may be inquiring an operator to determine whether the subscriber identity card belongs to the roaming status, or extracting MCC from PLMN information in a currently registered network by the two or more subscriber identity cards, comparing the MCC with the MCC stored in the subscriber identity card to determine whether the subscriber identity card is in the roaming status, and when the two subscriber identity cards are consistent, the subscriber identity card is in the non-roaming status, and when the two subscriber identity cards are not consistent, the subscriber identity card is in the roaming status.
The card determining module 42 is configured to determine whether roaming states of the two or more subscriber identity cards are consistent;
the network searching module 43 is configured to search a network again according to a preset rule;
specifically, the UE stores an MCC-network system priority order mapping table, where the mapping table may be set by a user, may also be factory-owned by the UE, may set priorities of different MCCs, and may also set priorities of different network systems in each MCC.
The network searching module 43 searches for a network again according to a preset rule, where the preset rule is to select a PLMN according to the mapping table stored in the UE, and the network searching module 43 searches for a PLMN of the roaming subscriber identity card again, where the PLMN is selected by first searching for LTE with MCC of 460, then searching for TDSCDMA and GSM under the MCC, and if none of the PLMN is searched, then searching for LTE with MCC of 454, and then searching for WCDMA and GSM under the MCC; or selecting MCC of non-roaming user identification card according to received information of roaming and non-roaming sent by user identification card, then selecting network system in MCC according to priority in table 1,
the registration module 44 is configured to register to the searched network.
When the corresponding network is searched, the registration module 44 registers the roaming subscriber identity card to the searched network.
The number of the user identification cards is more than two, and the MCC stored in the more than two user identification cards is the same.
Example four
In this embodiment, a schematic diagram of an apparatus using the methods of the first and second embodiments is shown in fig. five, where the obtaining module 41 is further configured to obtain a first mobile country code MCC of a network to which each subscriber identity card is registered;
the apparatus further comprises: a roaming determining module 51, configured to determine whether the subscriber identity card is in a roaming state, where when the first MCC is consistent with the MCC stored in the subscriber identity card, the subscriber identity card is in a non-roaming state; and when the first MCC is not consistent with the MCC stored in the subscriber identity card, the subscriber identity card is in a roaming state.
The apparatus further comprises: a communication module 521, a matching module 522; wherein:
the communication module 521 is configured to control the subscriber identity module in the non-roaming state to send the MCC of the network registered by the subscriber identity module to the subscriber identity module in the roaming state;
specifically, when the roaming determining module 51 determines that some subscriber identity cards belong to the non-roaming state and some subscriber identity cards belong to the roaming state, the subscriber identity card in the non-roaming state sends the MCC extracted by the subscriber identity card in the non-roaming state to the subscriber identity card in the roaming state through the card communication module 521. For example, the subscriber identity card 2 transmits the extracted MCC460 to the subscriber identity card 1.
The matching module 522 is configured to compare the MCC of the network registered by the subscriber identity card in the roaming state with the received MCC of the network registered by the subscriber identity card in the non-roaming state, and notify the network searching module 43.
Each user identification card comprises: the communication module and the matching module are used for setting different user identification cards;
specifically, the sim card module may be used to place different sim cards. The subscriber identity card can be a SIM or a USIM.
The device further includes a storage module 53, configured to generate and store a mapping relationship between an MCC of a UE registration network, a network type priority order corresponding to the MCC, and a public land mobile network PLMN.
The registration module 44 is further configured to select a network according to the stored correspondence for registration.
The user identification card is also used for storing the MCC in the user identification card.
Specifically, the subscriber identity card is further configured to store a carrier home MCC.
In practical applications, the obtaining module 41, the card determining module 42, the network searching module 43, the registering module 44, the roaming determining module 51, the communication module 521, the matching module 522, and the storage module 53 may be implemented by a Central Processing Unit (CPU), a microprocessor Unit (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like located on a mobile terminal.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. A method for registering a network based on multiple cards, the method comprising:
the method comprises the following steps that User Equipment (UE) acquires respective roaming states of more than two user identification cards, wherein the respective roaming states of the user identification cards comprise: in a non-roaming state or in a roaming state; when the MCC stored in the subscriber identity card is consistent with the first mobile country code MCC of the registered network, the corresponding non-roaming state is realized; when the MCC stored in the subscriber identity card is inconsistent with the first MCC, the subscriber identity card is correspondingly in a roaming state;
when the roaming states of the more than two subscriber identity cards are inconsistent, the subscriber identity card in the non-roaming state sends the MCC of the network registered by the subscriber identity card to the subscriber identity card in the roaming state, and the subscriber identity card in the roaming state compares the MCC of the network registered by the subscriber identity card with the received MCC of the network registered by the subscriber identity card in the non-roaming state;
and when the comparison result of the MCC of the network registered by the user identification card in the roaming state and the MCC of the network registered by the received user identification card in the non-roaming state is inconsistent, the UE searches the network again according to a preset rule and registers the network to the searched network.
2. The method of claim 1, wherein after the UE re-searches for a network according to a preset rule and registers, the method further comprises: and the UE generates and stores the corresponding relation among the MCC of the UE registration network, the network type priority order corresponding to the MCC and the public land mobile network PLMN.
3. The method of claim 2, wherein after generating and storing the correspondence, the method further comprises:
and when the UE is interrupted with the registered network, selecting the network for registration according to the stored corresponding relation.
4. The method of claim 1, wherein the MCCs stored in the two or more subscriber identity cards are identical.
5. An apparatus UE for registering a network based on multiple cards, the apparatus comprising: the system comprises an acquisition module, a sending module and a registration module; wherein the content of the first and second substances,
the acquiring module is configured to acquire respective roaming states of two or more subscriber identity cards, where the respective roaming states of the subscriber identity cards include: in a non-roaming state or in a roaming state; when the MCC stored in the subscriber identity card is consistent with the first mobile country code MCC of the registered network, the corresponding non-roaming state is realized; when the MCC stored in the subscriber identity card is inconsistent with the first MCC, the subscriber identity card is correspondingly in a roaming state;
the sending module is configured to send, by the subscriber identity card in the non-roaming state, the MCC of the network registered by the subscriber identity card to the subscriber identity card in the roaming state when the roaming states of the two or more subscriber identity cards are inconsistent, where the MCC of the network registered by the subscriber identity card in the roaming state is compared with the received MCC of the network registered by the subscriber identity card in the non-roaming state by the subscriber identity card in the roaming state;
the registration module is configured to, when the MCC of the network registered by the roaming subscriber identity card is not consistent with the MCC of the network registered by the received subscriber identity card in the non-roaming state, re-search the network by the UE according to a preset rule, and register the network to the searched network.
6. The apparatus of claim 5, further comprising a storage module configured to generate and store a mapping relationship between an MCC of the UE registration network, a network type priority order corresponding to the MCC, and a public land mobile network PLMN.
7. The device of claim 6, wherein the registration module is further configured to select a network for registration according to the stored correspondence when the UE and the registered network are disconnected.
8. The device of claim 5, wherein the registration module is further configured to store the MCC in the subscriber identity card.
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| CN115038130B (en) * | 2018-08-08 | 2023-06-23 | 中兴通讯股份有限公司 | Mobile data service switching method, terminal and computer storage medium |
| CN109309913A (en) * | 2018-09-18 | 2019-02-05 | 深圳市万普拉斯科技有限公司 | Method, apparatus, computer equipment and the storage medium of more card Roaming Registration networks |
| CN113873524B (en) * | 2021-10-27 | 2023-02-28 | 哲库科技(北京)有限公司 | Network registration method, device, multi-card terminal and storage medium |
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