CN106304020A - The processing method of international roaming, device and terminal under network configuration EPLMN scene - Google Patents

Abstract

The invention discloses a processing method for international roaming in a network configuration peer-to-peer public land mobile network (EPLMN) scenario, comprising: after a terminal resides in a target cell, judging the public land mobile network (PLMN) ID of the target cell ; The terminal determines that it is already outside the country according to the judgment result of the PLMN ID; the terminal judges its current working status, and performs the corresponding mode switching operation and attaching to the target cell according to different judgment results operation; wherein, when the terminal determines that it is already outside the country, or after the terminal receives the attach reception message sent by the target cell, it performs the mode switching operation; the working state is used to represent the terminal in idle or connected state. The invention also discloses a device and a terminal for realizing the method at the same time.

Description

Processing method, device and terminal for international roaming in network configuration EPLMN scenario

technical field

The present invention relates to international roaming technology in the field of mobile communication, in particular to a processing method, device and terminal for international roaming under the scene of network configuration peer-to-peer public land mobile network (EPLMN).

Background technique

When an LTE terminal is roaming across the border and selects a network, because the Public Land Mobile Network (PLMN) IDs of the coverage network on both sides of the border are different and not related to each other, as the signal of the original resident network gradually weakens, the terminal will eventually leave the network first. The original resident network, and then re-search the resident network for resident. This off-network-research process will cause the user to be in a "no service" state for a long period of time, and the re-resident network cannot be specified by the original operator.

In order to improve users' network selection experience when roaming across borders and shorten the "no service" time of terminals, some operators have deployed EPLMNs of cooperative operators in roaming areas in border areas. But at this time (in the network configuration EPLMN scenario), when the terminal roams across borders, the following problems will occur in the status display and protocol stack opening:

1) When the terminal roams from a mainland operator to another overseas operator in the way of reselection/redirection, the status bar of the terminal does not display the roaming status "R", which misleads the user to think that it is still not roaming at this time. Since the user does not know that roaming billing has started, more roaming charges may be incurred, affecting user experience;

2) Some customized terminals (TD-LTE, TD-SCDMA, and GSM three-mode support in domestic scenarios; TD-LTE, FDD LTE, WCDMA, and GSM four-mode support in international roaming scenarios) are reselected/redirected to other overseas operations During commercial use, mode switching did not occur, and the terminal still only supports domestic standards and frequency bands, which resulted in the terminal being unable to use the non-domestic standards and non-domestic frequency bands of the network in the roaming area.

Contents of the invention

In order to solve the existing technical problems, embodiments of the present invention provide a processing method, device and terminal for international roaming in a network configuration EPLMN scenario.

An embodiment of the present invention provides a method for processing international roaming in a network configuration EPLMN scenario, the method comprising:

After the terminal camps on the target cell, it judges the PLMN ID of the target cell;

The terminal determines that it is already outside the country according to the judgment result of the PLMN ID;

The terminal judges its own current working state, and performs a corresponding mode switching operation and an attaching operation to the target cell according to different judgment results;

Wherein, when the terminal determines that it is outside the country, or after the terminal receives the attach receiving message sent by the target cell, it performs the mode switching operation; the working state is used to indicate that the terminal is idle state or connected state.

In the embodiment of the present invention, the terminal performs a mode switching operation, including:

The terminal only converts the communication standard and communication frequency band supported by itself to the communication standard and communication frequency band corresponding to the overseas network, and during the mode conversion process, the terminal always resides in the target cell.

In an embodiment, when the terminal performs the mode switching operation or after performing the mode switching operation, the method further includes:

The terminal displays a first identifier on the terminal interface according to a preset display manner, and the first identifier is used to indicate that the terminal is in an international roaming state.

Wherein, the terminal performs a mode switching operation, including:

When the terminal determines that it is outside the country, it performs a mode switching operation; the terminal is currently in an idle state or a connected state; or,

After receiving the attach receiving message sent by the target cell, the terminal performs a mode switching operation; the terminal is currently in an idle state or a connected state.

Wherein, when the terminal is currently in an idle state, the terminal performs a mode switching operation after receiving the attach receiving message sent by the target cell, including:

After receiving the attach receiving message sent by the target cell, the terminal receives an RRC connection release message sent by the network side, and releases the RRC connection;

After the terminal enters the idle state again, it performs mode conversion.

Wherein, when the terminal is currently in the connected state, the terminal performs a mode switching operation after receiving the attach receiving message sent by the target cell, including:

After receiving the attach receiving message sent by the target cell, the terminal determines whether the terminal itself completes the data service;

After confirming that the data service is completed, receive the release RRC connection message issued by the network side, and release the RRC connection;

After the terminal enters the idle state again, it performs mode conversion.

The embodiment of the present invention also provides a processing device for international roaming in a network configuration EPLMN scenario, the device includes: a processing module and a conversion module; wherein,

The processing module is used for judging the PLMN ID of the target cell after the terminal camps in the target cell; determining that the terminal is already outside the country according to the judgment result of the PLMN ID;

The switching module is used to judge the current working state of the terminal, and perform corresponding mode switching operations and attach operations to the target cell according to different judgment results;

Wherein, when the terminal determines that it is outside the country, or after the terminal receives the attach receiving message sent by the target cell, it performs the mode switching operation; the working state is used to indicate that the terminal is idle state or connected state.

Wherein, the conversion module includes:

A state judging unit, configured to judge the current working state of the terminal;

a mode conversion unit, configured to perform a corresponding mode conversion operation according to the judgment result of the state judgment unit;

An attach processing unit, configured to perform a corresponding attach operation to the target cell according to the judgment result of the status judging unit.

In one embodiment, the device also includes:

The display module is configured to display a first mark on the terminal interface in a preset display manner, and the first mark is used to indicate that the terminal is in an international roaming state.

An embodiment of the present invention also provides a terminal, where the terminal includes the device described above.

According to the processing method, device and terminal for international roaming under the network configuration EPLMN scenario provided by the embodiments of the present invention, after the terminal resides in the target cell, it judges the PLMN ID of the target cell; the terminal judges the PLMN ID according to the As a result, it is determined that it is already outside the country; the terminal judges its current working state, and performs corresponding mode switching operations and attach operations to the target cell according to different judgment results; wherein, the terminal determines that it is already in When going abroad, or after receiving the attach receiving message sent by the target cell, the terminal performs the mode switching operation; the working state is used to indicate that the terminal is in an idle state or a connected state. In the embodiment of the present invention, according to the judgment of the PLMN ID residing in the target cell, the communication standard and communication frequency band supported by the terminal are updated in time to prevent the problem that the terminal cannot support non-domestic standard and non-domestic frequency band when roaming based on EPLMN; The terminal displays the roaming logo in a timely manner to prevent misleading the user's cognition of the working status of the mobile phone, avoid unnecessary roaming charges, and improve user experience.

Description of drawings

In the drawings (which are not necessarily drawn to scale), like reference numerals may describe like parts in different views. Similar reference numbers with different letter suffixes may indicate different instances of similar components. The drawings generally illustrate the various embodiments discussed herein, by way of example and not limitation.

FIG. 1 is a schematic diagram of an implementation process of a processing method for international roaming in a network configuration EPLMN scenario according to an embodiment of the present invention;

FIG. 2 is a first schematic structural diagram of a processing device for international roaming in a network configuration EPLMN scenario according to an embodiment of the present invention;

FIG. 3 is a second schematic structural diagram of a processing device for international roaming in a network configuration EPLMN scenario according to an embodiment of the present invention;

FIG. 4 is a third structural diagram of a processing device for international roaming in a network configuration EPLMN scenario according to an embodiment of the present invention.

detailed description

In the embodiment of the present invention, after the terminal camps in the target cell, it judges the PLMN ID of the target cell; the terminal determines that it is already outside the country according to the judgment result of the PLMN ID; Judging the working status, and performing corresponding mode switching operations and attaching operations to the target cell according to different judgment results; wherein, when the terminal determines that it is already outside the country, or when the terminal receives the target cell After the sender attaches and receives the message, it executes the mode switching operation; the working state is used to indicate that the terminal is in an idle state or a connected state.

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a schematic diagram of the implementation flow of the processing method for international roaming under the network configuration EPLMN scenario described in the embodiment of the present invention, as shown in Fig. 1 , including:

Step 101: after the terminal camps on the target cell, judge the PLMN ID of the target cell;

Step 102: The terminal determines that it is already outside the country according to the judgment result of the PLMN ID;

Step 103: The terminal judges its own current working status, and performs corresponding mode switching operations and attach operations to the target cell according to different judgment results; wherein, when the terminal determines that it is already outside the country, or The terminal performs the mode switching operation after receiving an attach accept (Attach accept) message sent by the target cell; the working state is used to indicate that the terminal is in an idle state or a connected state.

Here, the terminal judges the PLMN ID of the target cell, which may be: the terminal judges the mobile country code (MCC) corresponding to the PLMN ID to determine whether the terminal has moved abroad, for example: mainland China The MCC is: 460, change for overseas, such as Hong Kong: 454.

In the embodiment of the present invention, the terminal performs a mode switching operation, including:

The terminal only converts the communication standard and communication frequency band supported by itself to the communication standard and communication frequency band corresponding to the overseas network, and during the mode conversion process, the terminal does not need to search the network again, and the terminal always stays on Stay in the target cell.

In an embodiment, when the terminal performs the mode switching operation or after performing the mode switching operation, the method further includes:

The terminal displays a first identifier on the terminal interface according to a preset display manner, and the first identifier is used to indicate that the terminal is in an international roaming state.

In actual application, the first logo may be: the "R" logo displayed on the status bar of the mobile phone.

In the embodiment of the present invention, when the terminal is currently in an idle state, the terminal performs a mode switching operation after receiving the attach receiving message sent by the target cell, including:

After receiving the attach receiving message sent by the target cell, the terminal receives an RRC connection release (RRC Connection Release) message sent by the network side, and releases a radio resource control (Radio Resource Control, RRC) connection;

After the terminal enters the idle state again, it performs mode conversion.

In the embodiment of the present invention, when the terminal is currently in the connected state, the terminal performs a mode switching operation after receiving the attach receiving message sent by the target cell, including:

After receiving the attach receiving message sent by the target cell, the terminal determines whether the terminal itself completes the data service;

After confirming that the data service is completed, receive the release RRC connection message issued by the network side, and release the RRC connection;

After the terminal enters the idle state again, it performs mode conversion.

In the embodiment of the present invention, according to the judgment of the PLMN ID residing in the target cell, the communication standard and communication frequency band supported by the terminal are updated in time to prevent the problem that the terminal cannot support non-domestic standard and non-domestic frequency band when roaming based on EPLMN;

In addition, because the terminal displays the roaming logo in time, it prevents the user from misleading the user's cognition of the working status of the mobile phone, avoids unnecessary roaming charges, and improves user experience.

The embodiment of the present invention also provides a processing device for international roaming in a network configuration EPLMN scenario, as shown in FIG. 2 , the device includes: a processing module 201 and a conversion module 202; wherein,

The processing module 201 is used for judging the PLMN ID of the target cell after the terminal camps in the target cell; according to the judgment result of the PLMN ID, it is determined that the terminal is already outside the country;

The switching module 202 is configured to judge the current working state of the terminal, and perform corresponding mode switching operations and attach operations to the target cell according to different judgment results; wherein, when the terminal determines that it is already outside the country , or the terminal performs the mode switching operation after receiving the attach receiving message sent by the target cell; the working state is used to indicate that the terminal is in an idle state or a connected state.

Here, the terminal judges the PLMN ID of the target cell, which may be: the terminal judges the mobile country code (MCC) corresponding to the PLMN ID to determine whether the terminal has moved abroad, for example: mainland China The MCC is: 460, change for overseas, such as Hong Kong: 454.

In the embodiment of the present invention, the conversion module 202 performs a mode conversion operation, including:

Only convert the communication standard and communication frequency band supported by the terminal to the communication standard and communication frequency band corresponding to the overseas network, and during the mode conversion process, it is not necessary to re-search the network, and the terminal is always controlled to reside in the The target cell.

Wherein, when the terminal is currently in an idle state, the switching module 202 performs a mode switching operation after receiving the attach receiving message sent by the target cell, including:

After receiving the attach receiving message sent by the target cell, receiving a release RRC connection (RRC Connection Release) message issued by the network side, and releasing the RRC connection;

After it is determined that the terminal enters the idle state again, mode switching is performed.

Wherein, when the terminal is currently in the connected state, the switching module 202 performs a mode switching operation after receiving the attach receiving message sent by the target cell, including:

After receiving the attach receiving message sent by the target cell, judging whether the terminal itself has completed the data service;

After confirming that the data service is completed, receive the release RRC connection message issued by the network side, and release the RRC connection;

After the terminal enters the idle state again, it performs mode conversion.

In one embodiment, as shown in FIG. 3, the conversion module 202 includes:

A state judging unit 2021, configured to judge the current working state of the terminal;

A mode conversion unit 2022, configured to perform a corresponding mode conversion operation according to the judgment result of the state judgment unit;

The attach processing unit 2023 is configured to perform a corresponding attach operation to the target cell according to the judgment result of the status judging unit.

In one embodiment, as shown in Figure 4, the device further includes:

The display module 203 is configured to display a first identifier on the terminal interface in a preset display manner, and the first identifier is used to indicate that the terminal is in an international roaming state.

In actual application, the first logo may be: the "R" logo displayed on the status bar of the mobile phone.

In the embodiment of the present invention, according to the judgment of the PLMN ID residing in the target cell, the communication standard and communication frequency band supported by the terminal are updated in time to prevent the problem that the terminal cannot support non-domestic standard and non-domestic frequency band when roaming based on EPLMN; The terminal displays the roaming logo in a timely manner to prevent misleading the user's cognition of the working status of the mobile phone, avoid unnecessary roaming charges, and improve user experience.

An embodiment of the present invention also provides a terminal, where the terminal includes the device described above.

In order to facilitate the understanding of the solutions of the embodiments of the present invention, a method for deploying an EPLMN of a cooperative operator in a roaming area by an existing operator in a border area is briefly described below. The specific implementation method is:

Enable the EPLMN function in the network mobility management entity (MME) in the border area of the country, add the PLMN of the cooperative operator to the EPLMN list, and issue the tracking area (TA) as a unit. When a terminal in this TA roams across borders, it can be reselected/redirected to an operator network in a neighboring country/region, replacing the traditional off-network-research mechanism, which greatly shortens the roaming network selection time.

The present invention will be described in detail below in conjunction with specific application scenarios.

scene one

The terminal stays in the cell of the local operator in China, and moves to the public land mobile network (Public Land Mobile Network, PLMN) of the operator located in the border area and configured with an overseas cooperative operator, which is the TA area of EPLMN. During this process, the terminal acquires and saves the EPLMN list delivered by the network side. The terminal remains powered on and moves overseas, and the signal strength of the original operator gradually weakens.

This application scenario corresponds to the case where the terminal is in an idle state.

When the network environment satisfies the conditions for reselecting to an adjacent cell of the EPLMN, the terminal makes a reselection decision and completes camping in the target cell. After successfully camping, the terminal reads the system broadcast message and finds that the MCC of the PLMN ID of the target cell to camp on has changed from domestic (eg China: 460) to overseas (eg Hong Kong: 454). There are two ways to deal with the terminal:

method 1:

The terminal immediately switches to the roaming mode according to the change of the MCC, and the roaming indicator "R" is displayed in the status bar of the terminal;

During the mode conversion process, the terminal only changes the standard and frequency band supported by the terminal to the standard and frequency band of the corresponding overseas network, does not search the network again, and still resides in the target cell. After the conversion, the terminal initiates a Tracking Area Update request (Tracking Area Update) to the target cell. request); Since the original cell and the neighboring cell (target cell) of the EPLMN belong to different core networks, the request will be rejected by Cause 9: Tracking AreaUpdate reject;

Then the terminal initiates an Attach request to the target cell, and successfully attaches after receiving the Attachaccept message returned by the target cell.

Method 2:

The terminal initiates a Tracking Area Update request and an Attach request to the target cell, and receives the Attach accept message returned by the target cell;

After successful attachment, because there is no data transmission, the network side sends an RRC Connection Release message to release the RRC connection. After receiving the message, the terminal enters the idle state, and then performs mode conversion. During the mode conversion process, the terminal only changes the standard and frequency band supported by the terminal to Corresponding to the standard and frequency band of the overseas network, it will still stay in the target cell without re-searching the network;

The status bar of the terminal displays a roaming indicator "R".

scene two

The terminal stays in the cell of the local operator in China, and moves to the TA area of the EPLMN where the operator is located in the border area and configures the public land mobile network (Public Land Mobile Network, PLMN) of the overseas cooperative operator. During this process, the terminal acquires and saves the EPLMN list delivered by the network side. The terminal remains powered on and moves overseas, and the signal strength of the original operator gradually weakens.

This application scenario corresponds to the situation where the terminal is in the connected state.

When the network environment satisfies redirection to the neighboring cell of the EPLMN, the terminal receives the redirection command and completes camping in the target cell. After successfully camping, the terminal reads the system broadcast message and finds that the MCC of the PLMN ID of the cell where it resides has changed from domestic (such as China: 460) to overseas (such as Hong Kong: 454). Next, there are two processing methods:

method 1:

The terminal immediately switches to the roaming mode according to the change of the MCC, and the roaming indicator "R" is displayed on the status bar of the terminal. During the mode conversion process, the terminal only changes the standard and frequency band supported by the terminal to the standard and frequency band of the corresponding overseas network, and does not search the network again , still reside in the target cell;

After conversion, the terminal initiates a Tracking Area Update request request to the neighboring cell. Since the original cell and the neighboring cell of the EPLMN belong to different core networks, the request will be rejected by Cause 9: Tracking AreaUpdate reject;

Then the terminal initiates an Attach request to the target cell, and receives an Attach accept message returned by the target cell, and attaches successfully.

Method 2:

The terminal initiates a Tracking Area Update request and an Attach request to the target cell and receives an Attach accept message;

After the terminal completes the data service, the network side sends an RRC Connection Release message to release the RRC connection, and the terminal enters the idle state after receiving the message;

Then the mode is switched according to the change of the previous MCC, and the roaming indication mark "R" is displayed in the status bar of the terminal.

scene three

This application scenario takes a customized TD-LTE multi-mode terminal (supports TD-LTE/TD-SCDMA/GSM three-mode domestically, supports TD-LTE/LTE FDD/WCDMA/GSM four-mode when roaming) as an example, the specific process is as follows :

The terminal saves the information that the PLMN of overseas operators (for example: 45412, 45413) is EPLMN, and keeps idle during the process of moving from China (for example: China's country code is 460) to overseas. When the network environment meets the reselection conditions, the terminal Make a reselection decision, and complete the camping in the cell to which the EPLMN (eg: 45412) belongs. When the terminal reads the system broadcast message, it finds that the country code (for example: 454) corresponding to the PLMN ID in SIB1 already belongs to the country, then

method 1:

The terminal immediately switches to the four-mode roaming mode. During the mode conversion process, the terminal only changes the standard and frequency band supported by the terminal to the standard and frequency band of the corresponding overseas network, and does not search the network again. It still stays in the target cell and initiates tracking to the target cell. Area update request (Tracking Area Update request); Since the original cell and the neighboring cell (target cell) of the EPLMN belong to different core networks, the request will be rejected by Cause9: Tracking Area Update reject; then the terminal initiates an Attach request to the target cell, After receiving the Attach accept message returned by the target cell, it attaches successfully. or;

Method 2:

The terminal initiates a tracking area update request (Tracking Area Update request) to the target cell; since the original cell and the neighboring cell (target cell) of the EPLMN belong to different core networks, the request will be rejected by Cause9: Tracking Area Update reject; then the terminal sends the target cell The cell initiates an Attach request; after receiving the Attach accept message returned by the target cell, because there is no data transmission, the network side sends an RRC Connection Release message to release the RRC connection, and the terminal enters the idle state after receiving the message, and then performs mode conversion. During the mode conversion process, only the system and frequency band supported by the terminal are changed to the standard and frequency band of the corresponding overseas network, without re-searching the network, it still stays in the target cell, and the roaming indicator "R" is displayed.

scene four

This application scenario takes a customized TD-LTE multi-mode terminal (supports TD-LTE/TD-SCDMA/GSM three-mode domestically, supports TD-LTE/LTE FDD/WCDMA/GSM four-mode when roaming) as an example, the specific process is as follows :

The terminal saves the information that the overseas operator's PLMN (for example: 45412, 45413) is EPLMN, and keeps connected during the process of moving from China (for example: China's country code is 460) to overseas. When the network environment meets the redirection conditions, the terminal Receive the redirection command and complete the cell residency in EPLMN (eg: 45412). After successfully residing, read the cell system broadcast message and find that the country code (for example: 454) corresponding to the PLMN ID in SIB1 already belongs to the country, then

method 1:

The terminal immediately switches to the four-mode roaming mode. During the mode conversion process, the terminal only changes the standard and frequency band supported by the terminal to the standard and frequency band of the corresponding overseas network. It does not search the network again, and still resides in the target cell and initiates a call to the neighboring cell. Tracking Area Update request request, because the original cell and the neighboring cell of EPLMN belong to different core networks, so the request will be rejected by Cause 9: Tracking Area Update reject; then the terminal initiates an Attach request to the target cell and receives the Attach request returned by the target cell accept message, and finally attached to the cell. or;

Method 2:

The terminal initiates a Tracking Area Update request and an Attach request to the target cell, and receives an Attach Accept message to complete the cell attachment; after the terminal completes the data service, the network side sends an RRC Connection Release message to release the RRC connection, and the terminal receives the message and enters the idle state. In the process of mode conversion, the terminal only changes the standard and frequency band supported by the terminal to the standard and frequency band of the corresponding overseas network, and does not search the network again, and still stays in the target cell, displaying the roaming logo "R".

It can be seen that in the embodiment of the present invention, according to the judgment of the PLMN ID residing in the target cell, the communication standard and communication frequency band supported by the terminal are updated in time to prevent the terminal from supporting non-domestic standard and non-domestic frequency band when roaming based on EPLMN; in addition , since the terminal displays the roaming logo in time, it prevents the user from misleading the user's cognition of the working status of the mobile phone, avoids unnecessary roaming charges, and improves the user experience.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow diagram procedure or procedures and/or block diagram procedures or blocks.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (9)

1. A processing method for international roaming under a network configuration peer-to-peer public land mobile network (EPLMN) scene is characterized by comprising the following steps:

after the terminal resides in the target cell, judging the PLMN ID of the target cell;

the terminal determines that the terminal is out of the country according to the judgment result of the PLMN ID;

the terminal judges the current working state of the terminal, and executes corresponding mode conversion operation and attachment operation to the target cell according to different judgment results;

the terminal executes the mode switching operation when determining that the terminal is out of the country or after receiving an attach receiving message sent by the target cell; the working state is used for representing that the terminal is in an idle state or a connection state.

2. The method of claim 1, wherein the terminal performs a mode switching operation comprising:

the terminal only converts the communication system and the communication frequency band supported by the terminal into the communication system and the communication frequency band corresponding to the overseas network, and the terminal is always resident in the target cell in the mode conversion process.

3. The method of claim 1, wherein when the terminal performs the mode switching operation or after performing the mode switching operation, the method further comprises:

the terminal displays a first identifier on a terminal interface according to a preset display mode, wherein the first identifier is used for representing that the terminal is in an international roaming state.

4. The method of claim 1, wherein when the terminal is currently in an idle state, after receiving an attach receive message sent by the target cell, the terminal performs a mode switching operation, including:

after receiving the attachment receiving message sent by the target cell, the terminal receives a Radio Resource Control (RRC) connection releasing message sent by a network side and releases RRC connection;

and after the terminal enters the idle state again, performing mode conversion.

5. The method of claim 1, wherein when the terminal is currently in a connected state, after receiving an attach receive message sent by the target cell, the terminal performs a mode switching operation, including:

after receiving the attached receiving message sent by the target cell, the terminal judges whether the terminal completes the data service;

after the data service is determined to be completed, receiving a RRC connection release message issued by a network side, and releasing RRC connection;

and after the terminal enters the idle state again, performing mode conversion.

6. An apparatus for processing international roaming in a network configuration EPLMN scenario, the apparatus comprising: the device comprises a processing module and a conversion module; wherein,

the processing module is used for judging the PLMN ID of the target cell after the terminal resides in the target cell; determining that the PLMN is out of the country according to the judgment result of the PLMN ID;

the switching module is used for judging the current working state of the terminal, and executing corresponding mode switching operation and attaching operation to the target cell according to different judgment results;

the terminal executes the mode switching operation when determining that the terminal is out of the country or after receiving an attach receiving message sent by the target cell; the working state is used for representing that the terminal is in an idle state or a connection state.

7. The apparatus of claim 6, wherein the conversion module comprises:

the state judgment unit is used for judging the current working state of the terminal;

the mode switching unit is used for executing corresponding mode switching operation according to the judgment result of the state judgment unit;

and the attachment processing unit is used for executing corresponding attachment operation to the target cell according to the judgment result of the state judgment unit.

8. The apparatus of claim 6, further comprising:

the display module is used for displaying a first identifier on a terminal interface according to a preset display mode, wherein the first identifier is used for representing that the terminal is in an international roaming state.

9. A terminal, characterized in that the terminal comprises the apparatus of any of claims 6-8.