CN113423074B

CN113423074B - 4G multi-mode dual-card mobile terminal and data management method thereof

Info

Publication number: CN113423074B
Application number: CN202110512614.8A
Authority: CN
Inventors: 马建平; 冯海涛; 张艳
Original assignee: ASR Microelectronics Co Ltd
Current assignee: ASR Microelectronics Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2022-06-03
Anticipated expiration: 2041-05-11
Also published as: CN113423074A

Abstract

The application discloses a data management method of a 4G multimode double-card mobile terminal, which prompts a user to select whether to switch a network mode of an SIM _ A or not when the SIM _ B starts a data service or an SIM card bearing the data service is switched from the SIM _ A to the SIM _ B. If the SIM _ A is resident in the 4G mobile communication network before, the SIM _ A is resident in the 3G or 2G mobile communication network instead, and simultaneously the SIM _ A reports that the 4G mobile communication network is not supported when registering to the mobile communication network. When the SIM card bearing the data service is switched back to the SIM _ A from the SIM _ B, the SIM _ A reports to the 4G mobile communication network when registering to the mobile communication network. SIM _ A automatically deactivates IMS and PDN thereof, and reports that VoLTE is not supported when SIM _ A re-registers to the mobile communication network. When the SIM card carrying the data service is switched back to SIM _ A from SIM _ B, the SIM _ A reports the support of VoLTE when registering to the mobile communication network again, and activates IMS and PDN thereof. The method and the device avoid interruption of normal data service of the SIM card bearing the data service caused by frequent access of the SIM card not bearing the data service to the connected state.

Description

4G multi-mode dual-card mobile terminal and data management method thereof

Technical Field

The application relates to a data management method of a dual-card mobile terminal.

Background

4G multimode (multi mode) Mobile phones supporting GSM (Global System for Mobile communications), UMTS (Universal Mobile Telecommunications System), and LTE (Long Term Evolution) have been widely used. However, the 4G multi-mode mobile phone still cannot meet the requirements of some specific users, for example, the user wants to have two different phone numbers, or the user wants to use different services (voice, short message, internet service, etc.) of different mobile communication operators at the same time, so the 4G multi-mode mobile phone with Dual SIM Dual Standby (DSDS) function also has a wide demand.

For convenience of description, in this document, a Subscriber Identity Module (SIM) card is used to denote a smart card used by a mobile terminal, in which subscriber identity data, an authentication algorithm, a corresponding key, and the like are stored for identifying and authenticating the mobile terminal accessing a mobile communication network. The SIM Card is to be understood in a broad sense, and includes R-uim (removable User Identity module) Card, uim (User Identity module) Card, UICC (Universal Integrated Circuit Card) built-in SIM application, usim (Universal electronic subscriber Identity module) application, csim (cdma subscriber Identity module) and the like having the same function in different mobile communication networks.

Two SIM cards in a dual-card dual-standby 4G multimode mobile phone are both 4G multimode SIM cards, both support VoLTE (Voice over LTE, Long term evolution Voice over Voice) Voice service and both support SRVCC (Single Radio Voice Call Continuity, Dual-mode Single-standby Wireless Voice Call Continuity) to switch Voice Call to UMTS or GSM. Both SIM cards support voice services as well as data services. But only one of voice service or data service can be performed at a certain SIM card at any one time. When one SIM card bears data service, the other SIM card is in a 4G VoLTE standby state and only provides basic service functions of VoLTE voice call, short message receiving and sending and the like. From a technical point of view, there is no difference between voice called paging and paging for data traffic for VoLTE. The VoLTE voice called paging message is still a Packet Switched (PS) page (paging), and the SIM card in idle state, which is not carrying data service, needs to continuously listen to the packet switched page. Not every paging of packet switching is called paging of VoLTE voice, switching to a connected state after the paging of packet switching of the SIM card is intercepted, and switching from the connected state to an idle state after the VoLTE voice service is not established. Before the link is not established, the mobile terminal cannot acknowledge the voice called page, which is known to be VoLTE, resulting in the provision of a non-data traffic bearer card that may receive unrelated packet switched pages of the card and frequently interrupting the continuous standby or data traffic of the data traffic bearer card. Therefore, the SIM card not carrying the data service frequently enters and exits the connected state to interrupt the normal data service of the SIM card carrying the data service, and the user experience of the VoLTE 4G multimode dual-card mobile terminal in such a scenario is seriously affected.

Disclosure of Invention

The technical problem to be solved by the application is to provide a 4G multimode dual-card mobile terminal, wherein a situation that an SIM card not carrying data services disturbs an SIM card carrying the data services is avoided between two 4G multimode SIM cards both supporting VoLTE.

In order to solve the technical problem, the application provides a data management method of a 4G multimode dual-card mobile terminal, wherein the 4G multimode dual-card mobile terminal has a dual-card dual-standby function, comprises two SIM cards which are both 4G multimode SIM cards, both support VoLTE voice service and both support SRVCC to switch voice call to UMTS or GSM; the first SIM card is called SIM _ A and the second SIM card is called SIM _ B. The data management method includes the following steps. Step S10: when the SIM _ B starts the data service or the SIM card carrying the data service is switched from the SIM _ A to the SIM _ B, prompting a user to select whether to switch the network mode of the SIM _ A; if the user selects yes, go to step S20; if the user selects no, the process proceeds to step S40. Step S20: if the SIM _ A is resident in the 4G mobile communication network before, the SIM _ A is resident in the 3G or 2G mobile communication network instead, and simultaneously the SIM _ A reports that the 4G mobile communication network is not supported when registering to the mobile communication network. Step S30: when the SIM card bearing the data service is switched back to the SIM _ A from the SIM _ B, the SIM _ A reports to the 4G mobile communication network when registering to the mobile communication network. Step S40: SIM _ A automatically deactivates IMS and PDN thereof, and reports that VoLTE is not supported when SIM _ A re-registers to the mobile communication network. Step S50: when the SIM card carrying the data service is switched back to SIM _ A from SIM _ B, the SIM _ A reports the support of VoLTE when registering to the mobile communication network again, and activates IMS and PDN thereof. This is an embodiment one of the present application, and is used to avoid that the SIM card that does not carry data traffic frequently enters and exits the connected state to interrupt the normal data traffic of the SIM card that carries data traffic.

Further, in step S10, the AP module of the mobile terminal prompts the user to select whether to perform network mode switching of the SIM _ a; the AP module refers to application layer software of the mobile terminal; the user is prompted in a manner that a corresponding UI is displayed on a screen of the mobile terminal for the user to operate.

Further, in step S20, the AP module of the mobile terminal notifies the CP module of SIM _ a, where the CP module refers to the control panel; the CP module of the SIM _ A is changed to reside in the 3G or 2G mobile communication network, and the CP module of the SIM _ A registers to the mobile communication network.

Further, after the step S20 is completed, the network mode of the SIM _ a is automatically changed from the first network mode to the second network mode; the first network mode is a network mode supporting the residence in a 2G, 3G or 4G mobile communication network; the network mode two refers to a network mode which only supports the residing in the 2G or 3G mobile communication network.

Further, in step S30, the AP module of the mobile terminal notifies the CP module of SIM _ a, and the CP module of SIM _ a registers with the mobile communication network.

Further, after the step S30 is completed, the network mode of the SIM _ a is automatically changed from the network mode two to the network mode one; at this time, if there is a campeable 4G serving cell, the SIM _ a registers in the 4G mobile communication network, otherwise it temporarily transfers to the 3G or 2G mobile communication network to expect an opportunity to reselect, or switch, or redirect, or CCO to the 4G mobile communication network in the 4G, 3G, 2G overlay coverage cell.

Further, in step S40, the AP module of the mobile terminal notifies the CP module of SIM _ a, the CP module of SIM _ a automatically deactivates the IMS and its PDN, and the CP module of SIM _ a registers with the mobile communication network.

Further, after the step S40 is completed, the SIM _ a no longer supports VoLTE, but only supports the CSFB mode to provide the voice service, that is, the circuit domain service needs to fall back to the 2G or 3G mobile communication network.

Further, in step S50, the AP module of the mobile terminal notifies the CP module of SIM _ a, and the CP module of SIM _ a registers and activates the IMS and its PDN to the mobile communication network.

Further, after the step S50 is completed, the SIM _ a starts to support VoLTE, and recovers the VoLTE voice service.

Further, the step S20 is changed to the step S25, and the step S30 is changed to the step S35. Step S25: packet switching switches to SIM _ B, and data traffic is established on SIM _ B. When the data service registration of the SIM _ B is not the MMS multimedia message service, if the SIM _ A is resident in the 4G mobile communication network before, the SIM _ A is resident in the 3G or 2G mobile communication network instead, and simultaneously the SIM _ A reports to support the 4G mobile communication network when registering to the mobile communication network. And when the data service registration of the SIM _ B is the MMS multimedia message service, the SIM _ A keeps the original mode to reside. Step S35: when the SIM card bearing the data service is switched back to the SIM _ A from the SIM _ B, the packet switching is switched to the SIM _ A, the data service is established on the SIM _ A, and the SIM _ A reports and supports the 4G mobile communication network when registering to the mobile communication network. This is example two of the present application.

Further, in step S25, the AP module of the mobile terminal notifies the CP module of SIM _ a and the CP module of SIM _ B, and performs packet switching, and the CP module of SIM _ B establishes a data service on SIM _ B; and judging whether the data service registration of the SIM _ B is an MMS multimedia message service or not by the CP module of the SIM _ A, and changing the CP module of the SIM _ A to reside in a 3G or 2G mobile communication network and register to the mobile communication network.

Further, after the step S25 is completed, the network mode of the SIM _ a is automatically changed from the network mode one to the network mode two.

Further, in step S35, the AP module of the mobile terminal notifies the CP module of SIM _ a and the CP module of SIM _ B, and performs packet switching, and the CP module of SIM _ a establishes a data service on SIM _ a; the CP module of the SIM _ a registers with the mobile communication network.

Further, after the step S35 is completed, the network mode of the SIM _ a is automatically changed from the network mode two to the network mode one; at this time, if there is a campeable 4G serving cell, the SIM _ a is registered in the 4G mobile communication network, otherwise, it is temporarily switched to the 3G or 2G mobile communication network to expect the opportunity to reselect, or switch, or redirect, or CCO to the 4G mobile communication network in the 4G, 3G, 2G overlay coverage cell.

Corresponding to the first embodiment of the data management method of the 4G multimode dual-card mobile terminal, the application also provides the 4G multimode dual-card mobile terminal which has a dual-card dual-standby function, has two SIM cards which are both 4G multimode SIM cards, both support VoLTE voice service and both support SRVCC to switch voice call to UMTS or GSM; the first SIM card is called SIM _ A and the second SIM card is called SIM _ B. The 4G multimode dual-card mobile terminal comprises a prompt selection unit, a re-resident unit, a first registration reporting unit, a deactivation unit and a second registration reporting unit. The prompting selection unit is used for prompting the user to select whether to switch the network mode of the SIM _ A or not when the SIM _ B enables the data service or the SIM card carrying the data service is switched from the SIM _ A to the SIM _ B. The re-residing unit is used for residing in a 3G or 2G mobile communication network if the SIM _ A resides in the 4G mobile communication network before when the user selects to switch the network mode of the SIM _ A, and reporting that the SIM _ A does not support the 4G mobile communication network when registering in the mobile communication network. And the registration reporting unit I is used for reporting that the SIM _ A supports the 4G mobile communication network when registering to the mobile communication network when the SIM card bearing the data service is switched back to the SIM _ A from the SIM _ B. The deactivation unit is used for automatically deactivating the IMS and the PDN thereof when the user selects not to switch the network mode of the SIM _ A, and reporting that VoLTE is not supported when the SIM _ A is registered in the mobile communication network again. The second registration reporting unit 50 is used to report support of VoLTE when the SIM _ a is registered again in the mobile communication network and activate the IMS and PDN thereof when the SIM card carrying the data service is switched from the SIM _ B to the SIM _ a.

Corresponding to the second embodiment of the data management method of the 4G multimode dual-card mobile terminal, in the 4G multimode dual-card mobile terminal, the re-residing unit is changed to the first packet switching unit, and the first registration reporting unit is changed to the second packet switching unit. The first packet switching unit is used for switching packet switching to an SIM _ B when a user selects to perform network mode switching of the SIM _ A, and establishing a data service on the SIM _ B; when the data service registration of the SIM _ B is not the MMS multimedia message service, if the SIM _ A is resident in the 4G mobile communication network before, the SIM _ A is resident in the 3G or 2G mobile communication network, and simultaneously, the SIM _ A is reported to not support the 4G mobile communication network when the SIM _ B is registered in the mobile communication network; and when the data service registration of the SIM _ B is the MMS multimedia message service, the SIM _ A keeps the original mode to reside. And the second packet switching unit is used for switching packet switching to the SIM _ A when the SIM card bearing the data service is switched back to the SIM _ A from the SIM _ B, establishing the data service on the SIM _ A, and reporting that the SIM _ A supports the 4G mobile communication network when registering to the mobile communication network.

The technical effect that this application obtained is: first, when the data service is switched to another SIM card, it is ensured that the SIM card carrying the data service is not interfered by the abnormal packet-switched paging message of the SIM card not carrying the data service. Secondly, the receiving and processing of unnecessary packet switching paging messages are reduced, and the frequent access connection state of the SIM card which does not bear data services is also reduced, thereby reducing the power consumption of the 4G multimode dual-card mobile terminal.

Drawings

Fig. 1 is a flowchart of a first embodiment of a data management method of a 4G multimode dual-card mobile terminal according to the present application.

Fig. 2 is a flowchart of a second embodiment of a data management method of a 4G multimode dual-card mobile terminal according to the present application.

Fig. 3 is a schematic structural diagram of a first embodiment of a 4G multimode dual-card mobile terminal according to the present application.

Fig. 4 is a schematic structural diagram of a second embodiment of a 4G multimode dual-card mobile terminal according to the present application.

The reference numbers in the figures illustrate: 10 is a prompt selection unit, 20 is a re-resident unit, 30 is a registration reporting unit one, 40 is a deactivation unit, and 50 is a registration reporting unit two.

Detailed Description

In the present application, a 4G multimode dual-card mobile terminal refers to a 4G multimode mobile terminal with dual-card dual-standby function, where two SIM cards, both 4G multimode SIM cards, both support VoLTE voice services, both support SRVCC to switch a voice call to UMTS or GSM. The 4G multimode SIM card supports automatic selection to reside in a 2G, 3G or 4G mobile communication network according to network environment, for example corresponding to a GSM, UTMS or LTE network respectively. Both SIM cards support voice services as well as data services. The VoLTE 4G multimode double-card mobile terminal only needs one group of 2G, 3G and 4G radio frequency transceivers, so that voice service or data service can be carried out on a certain SIM card at any time, and physical resources are fully utilized. For convenience of description, the first SIM card is referred to as SIM _ a, and the second SIM card is referred to as SIM _ B; the actions of the two SIM cards with respect to data management and mode switching are peer-to-peer.

Referring to fig. 1, an embodiment of a data management method for a 4G multimode dual-card mobile terminal according to the present application includes the following steps.

Step S10: and when the SIM _ B in the 4G multimode dual-card mobile terminal enables the data service or the SIM card carrying the data service is switched from the SIM _ A to the SIM _ B, prompting the user to select whether to switch the network mode of the SIM _ A. For example, the AP module of the mobile terminal prompts the user to select whether to perform network mode switching of the SIM _ a. The AP module refers to application layer software of the mobile terminal, and comprises an android system, a UI interface and the like. For another example, the User is prompted by displaying a corresponding UI (User Interface) on a screen of the mobile terminal for the User to operate. If the user selects yes, the process proceeds to step S20. If the user selects no, the process proceeds to step S40.

Step S20: the AP module of the mobile terminal informs the CP module of the SIM _ a. The CP module refers to a control panel, which is control software of the baseband communication mentioned conventionally. If the SIM _ a previously resided in the 4G mobile communication network, the CP module of the SIM _ a is now changed to reside in the 3G or 2G mobile communication network. Meanwhile, the UE (user equipment, i.e. mobile terminal) support capability reported by the CP module of the SIM _ a when registering with the mobile communication network does not include the support capability of the 4G mobile communication network. The effect of this is that the network mode of SIM _ a is automatically changed from network mode one to network mode two. The network mode one refers to a network mode supporting the residence in a 2G, 3G or 4G mobile communication network. The network mode two refers to a network mode which only supports the residing in the 2G or 3G mobile communication network. At this time, on one hand, data service or voice service can be performed on the SIM _ B, and on the other hand, the SIM _ a can support a Circuit Switched Fallback (CSFB) service that is more convenient and reliable than the CSFB service.

Step S30: when the SIM card carrying the data service is switched back to the SIM _ A from the SIM _ B, the AP module of the mobile terminal informs the CP module of the SIM _ A. The UE support capability reported by the CP module of the SIM _ A when registering to the mobile communication network comprises the support capability of the 4G mobile communication network. The effect of this is to cause the network mode of SIM _ a to automatically change from network mode two back to network mode one. At this time, if there is a campeable 4G serving Cell, the CP module of the SIM _ a is registered in the 4G mobile communication network, otherwise, it is temporarily switched to the 3G or 2G mobile communication network, so as to expect to have an opportunity to reselect, or switch, or redirect, or CCO (Cell Change Order) to the 4G mobile communication network in the 4G, 3G, 2G overlay coverage Cell.

Step S40: the AP module of the mobile terminal informs the CP module of the SIM _ a. The CP module of SIM _ a automatically deactivates (deactivating) the IMS (IP Multimedia Subsystem) and its PDN (Public Data Network), and re-registers SIM _ a with the 4G capability of the UE as not supporting VoLTE. The effect of this operation is that SIM _ a no longer supports VoLTE, but only supports CSFB mode to provide voice service, i.e. circuit domain service needs to fall back to 2G or 3G mobile communication network. In this step, the network mode of SIM _ a remains unchanged.

Step S50: when the SIM card carrying the data service is switched back to the SIM _ A from the SIM _ B, the AP module of the mobile terminal informs the CP module of the SIM _ A. The CP module of SIM _ a re-registers SIM _ a with the 4G capability of the UE as VoLTE capable and activates IMS and its PDN. The effect of this is to cause the SIM _ a to turn on VoLTE support, thereby resuming VoLTE voice traffic.

Referring to fig. 2, an embodiment of a data management method for a 4G multimode dual-card mobile terminal according to the present application includes the following steps.

Step S10: when the SIM _ B in the multi-mode dual-card mobile terminal enables the data service or the SIM card carrying the data service is switched from the SIM _ A to the SIM _ B, prompting the user to select whether to switch the network mode of the SIM _ A. For example, the AP module of the mobile terminal prompts the user to select whether to perform network mode switching of the SIM _ a. The AP module refers to application layer software of the mobile terminal, and comprises an android system, a UI interface and the like. For another example, the user is prompted by displaying a corresponding UI on a screen of the mobile terminal for the user to operate. If the user selects yes, the process proceeds to step S25. If the user selects no, the process proceeds to step S40.

Step S25: and the AP module of the mobile terminal informs the CP module of the SIM _ A and the CP module of the SIM _ B, the packet switching is switched to the SIM _ B, and the CP module of the SIM _ B establishes a data service on the SIM _ B.

When the CP module of the SIM _ A judges that the data service registration of the SIM _ B is not the MMS multimedia message service, if the SIM _ A is resident in the 4G mobile communication network before, the CP module of the SIM _ A is resident in the 3G or 2G mobile communication network instead. Meanwhile, the UE support capability reported by the CP module of the SIM _ A when registering to the mobile communication network does not contain the support capability of the 4G mobile communication network. The effect of this is that the network mode of SIM _ a is automatically changed from network mode one to network mode two.

And when the CP module of the SIM _ A judges that the data service registration of the SIM _ B is the MMS multimedia message service, the CP module of the SIM _ A keeps the original mode to reside without extra operation.

Step S35: when the SIM card carrying the data service is switched back to the SIM _ A from the SIM _ B, the AP module of the mobile terminal informs the CP module of the SIM _ A and the CP module of the SIM _ B, the packet switching is switched to the SIM _ A, and the CP module of the SIM _ A establishes the data service on the SIM _ A. The UE support capability reported by the CP module of the SIM _ A when registering to the mobile communication network comprises the support capability of the 4G mobile communication network. The effect of this is to cause the network mode of SIM _ a to automatically change from network mode two back to network mode one. At this time, if there is a campeable 4G serving cell, the CP module of the SIM _ a registers in the 4G mobile communication network, otherwise, it temporarily transfers to the 3G or 2G mobile communication network to expect an opportunity to reselect, or switch, or redirect, or CCO to the 4G mobile communication network in the 4G, 3G, 2G overlay coverage cell.

Step S40: the AP module of the mobile terminal informs the CP module of the SIM _ a. And the CP module of the SIM _ A automatically deactivates the IMS and the PDN thereof, and the SIM _ A re-registers the 4G capability of the UE as not supporting VoLTE. The effect of this operation is that SIM _ a no longer supports VoLTE, but only supports CSFB mode to provide voice service, i.e. circuit domain service needs to fall back to 2G or 3G mobile communication network. In this step, the network mode of SIM _ a remains unchanged.

In the chinese patent application "a dual-card 4G multimode mobile terminal and implementation method thereof," whose application publication number is CN110730484A and application publication date is 2020, 1, 24, a network mode processing method applied in a CSFB 4G multimode dual-card scene is disclosed. The document is that the non-data service bearer card resides in the 4G mobile communication network and is also called CSFB to the 3G or 2G mobile communication network when performing voice call. Under the condition, the non-data service bearing card is directly resided in the 3G or 2G mobile communication network, thereby reducing unnecessary mode switching and network searching actions.

The application is applied to a 4G multimode dual-card scene of VoLTE. The method is characterized in that the non-data service bearing card resides in a 4G mobile communication network and needs to process VoLTE voice called paging, and the VoLTE voice called paging and common data called paging are packet-switched paging, so that the non-data service bearing card is most likely to frequently respond to unnecessary packet-switched paging and frequently interrupt the data service of another data service bearing card to frequently enter and exit a connection state. The application provides two solutions to the problem of processing VoLTE voice called paging of a non-data service bearing card, and the embodiment is to switch the network mode of the non-data service bearing card to a 3G or 2G mobile communication network; the second embodiment allows the non-data service bearer card to still be registered in the 4G mobile communication network but the capability reporting does not support VoLTE, i.e. the 4G mobile communication network only supports CSFB and packet switched paging.

Referring to fig. 3, an embodiment of the 4G multimode dual-card mobile terminal provided in the present application includes a prompt selecting unit 10, a re-residing unit 20, a first registration reporting unit 30, a deactivating unit 40, and a second registration reporting unit 50. The first embodiment of the 4G multimode dual-card mobile terminal shown in fig. 3 corresponds to the first embodiment of the data management method of the 4G multimode dual-card mobile terminal shown in fig. 1.

The prompt selecting unit 10 is configured to prompt the user to select whether to perform network mode switching of the SIM _ a when the SIM _ B in the 4G multimode dual-card mobile terminal enables a data service or the SIM card carrying the data service is switched from the SIM _ a to the SIM _ B.

The re-residing unit 20 is configured to, when the user selects to perform network mode switching of the SIM _ a, if the SIM _ a previously resides in the 4G mobile communication network, change to reside in the 3G or 2G mobile communication network, and report that the UE support capability of the SIM _ a does not include the support capability of the 4G mobile communication network when registering with the mobile communication network.

The first registration reporting unit 30 is configured to report, when the SIM card carrying the data service is switched from the SIM _ B to the SIM _ a, that the UE support capability of the SIM _ a includes the support capability of the 4G mobile communication network when registering with the mobile communication network.

The deactivation unit 40 is configured to automatically deactivate the IMS and the PDN thereof when the user selects not to perform network mode switching of the SIM _ a, and report that the 4G capability of the UE does not support VoLTE when the SIM _ a is re-registered with the mobile communication network.

The second registration reporting unit 50 is configured to report the 4G capability of the UE as supporting VoLTE when the SIM _ a is re-registered with the mobile communication network and activate the IMS and the PDN thereof when the SIM card carrying the data service is switched from the SIM _ B to the SIM _ a.

Referring to fig. 4, an embodiment of a 4G multimode dual-card mobile terminal provided in the present application includes a prompt selecting unit 10, a first packet switching unit 25, a second packet switching unit 35, a deactivating unit 40, and a second registration reporting unit 50. The second embodiment of the 4G multimode dual-card mobile terminal shown in fig. 4 corresponds to the second embodiment of the data management method of the 4G multimode dual-card mobile terminal shown in fig. 2.

The first packet switching unit 25 is used for switching packet switching to the SIM _ B when the user selects to perform network mode switching of the SIM _ a, and establishing data service on the SIM _ B. When the data service registration of the SIM _ B is not the MMS multimedia message service, if the SIM _ A is resident in the 4G mobile communication network before, the SIM _ A is resident in the 3G or 2G mobile communication network instead, and simultaneously the UE support capability of the SIM _ A is reported to be not contained in the support capability of the 4G mobile communication network when the SIM _ B is registered in the mobile communication network. And when the data service registration of the SIM _ B is the MMS multimedia message service, the SIM _ A keeps the original mode to reside without additional operation.

The second packet switching unit 35 is configured to switch packet switching to the SIM _ a when the SIM card carrying the data service is switched from the SIM _ B to the SIM _ a, establish the data service on the SIM _ a, and report that the UE support capability of the SIM _ a includes the support capability of the 4G mobile communication network when registering with the mobile communication network.

The second registration reporting unit 50 is configured to report the 4G capability of the UE as supporting VoLTE when the SIM _ a is re-registered with the mobile communication network and activate the IMS and its PDN when the SIM card carrying the data service is switched from SIM _ B to SIM _ a.

The above are merely preferred embodiments of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art to which the present application pertains. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A data management method of a 4G multimode dual-card mobile terminal is disclosed, the 4G multimode dual-card mobile terminal has dual-card dual-standby function, has two SIM cards, both the 4G multimode SIM cards support VoLTE voice service, both the 4G multimode SIM cards support SRVCC to switch voice call to UMTS or GSM; the first SIM card is called as SIM _ A, and the second SIM card is called as SIM _ B; the data management method is characterized by comprising the following steps;

step S10: when the SIM _ B starts the data service or the SIM card carrying the data service is switched from the SIM _ A to the SIM _ B, prompting a user to select whether to switch the network mode of the SIM _ A; if the user selects yes, go to step S20; if the user selects no, go to step S40;

step S20: if the SIM _ A is resident in the 4G mobile communication network before, the SIM _ A is resident in the 3G or 2G mobile communication network instead, and simultaneously the SIM _ A reports that the 4G mobile communication network is not supported when registering to the mobile communication network;

step S30: when the SIM card bearing the data service is switched back to the SIM _ A from the SIM _ B, the SIM _ A reports to the 4G mobile communication network when registering to the mobile communication network;

step S40: SIM _ A automatically deactivates IMS and PDN thereof, and reports that VoLTE is not supported when SIM _ A re-registers to the mobile communication network;

step S50: when the SIM card carrying the data service is switched back to SIM _ A from SIM _ B, the SIM _ A reports the support of VoLTE when registering to the mobile communication network again, and activates IMS and PDN thereof.

2. The data management method of a 4G multimode dual-card mobile terminal according to claim 1, wherein in step S10, the AP module of the mobile terminal prompts the user to select whether to perform network mode switching of SIM _ a; the AP module refers to application layer software of the mobile terminal; the user is prompted in a manner that a corresponding UI is displayed on a screen of the mobile terminal for the user to operate.

3. The data management method of a 4G multimode dual-card mobile terminal according to claim 2, wherein in the step S20, the AP module of the mobile terminal notifies a CP module of SIM _ a, wherein the CP module is a control panel; the CP module of the SIM _ A is changed to reside in the 3G or 2G mobile communication network, and the CP module of the SIM _ A registers to the mobile communication network.

4. The data management method of the 4G multimode dual-card mobile terminal according to claim 1, wherein after the step S20 is completed, the network mode of the SIM _ a is automatically changed from the first network mode to the second network mode; the first network mode is a network mode supporting the residence in a 2G, 3G or 4G mobile communication network; the network mode two refers to a network mode which only supports the residing in the 2G or 3G mobile communication network.

5. The data management method of a 4G multimode dual card mobile terminal according to claim 3, wherein in the step S30, the AP module of the mobile terminal notifies the CP module of the SIM _ a, and the CP module of the SIM _ a registers with the mobile communication network.

6. The data management method of the 4G multimode dual-card mobile terminal according to claim 1, wherein after the step S30 is completed, the network mode of the SIM _ a is automatically changed from the network mode two to the network mode one; at this time, if there is a campeable 4G serving cell, the SIM _ a registers in the 4G mobile communication network, otherwise it temporarily transfers to the 3G or 2G mobile communication network to expect an opportunity to reselect, or switch, or redirect, or CCO to the 4G mobile communication network in the 4G, 3G, 2G overlay coverage cell.

7. The data management method of a 4G multimode dual-card mobile terminal according to claim 5, wherein in said step S40, the AP module of the mobile terminal notifies the CP module of SIM _ a, the CP module of SIM _ a automatically deactivates IMS and its PDN, and the CP module of SIM _ a registers with the mobile communication network.

8. The data management method of the 4G multimode dual-card mobile terminal according to claim 1, wherein after the step S40 is completed, the SIM _ a no longer supports VoLTE, but only supports the CSFB mode to provide the voice service, that is, the circuit domain service needs to fall back to the 2G or 3G mobile communication network.

9. The data management method of a 4G multimode dual card mobile terminal according to claim 7, wherein in said step S50, the AP module of the mobile terminal notifies the CP module of SIM _ a, and the CP module of SIM _ a registers and activates the IMS and its PDN to the mobile communication network.

10. The data management method of the 4G multimode dual-card mobile terminal according to claim 1, wherein after the step S50 is completed, the SIM _ a starts to support VoLTE and resumes VoLTE voice service.

11. The data management method of a 4G multimode dual-card mobile terminal according to claim 1, wherein the step S20 is changed to a step S25, and the step S30 is changed to a step S35;

step S25: switching packet switching to SIM _ B, and establishing data service on the SIM _ B;

when the data service registration of the SIM _ B is not the MMS multimedia message service, if the SIM _ A is resident in the 4G mobile communication network before, the SIM _ A is resident in the 3G or 2G mobile communication network instead, and simultaneously the SIM _ A reports to the 4G mobile communication network when registering to the mobile communication network;

when the data service registration of the SIM _ B is an MMS (multimedia messaging service) multimedia message service, the SIM _ A keeps the original mode to reside;

step S35: when the SIM card bearing the data service is switched back to the SIM _ A from the SIM _ B, the packet switching is switched to the SIM _ A, the data service is established on the SIM _ A, and the SIM _ A reports and supports the 4G mobile communication network when registering to the mobile communication network.

12. The data management method of a 4G multimode dual-card mobile terminal according to claim 11, wherein in step S25, the AP module of the mobile terminal notifies the CP module of SIM _ a and the CP module of SIM _ B, and performs packet switching, and the CP module of SIM _ B establishes data service on SIM _ B; and the CP module of the SIM _ A judges whether the data service registration of the SIM _ B is an MMS multimedia message service, and the CP module of the SIM _ A is changed to reside in a 3G or 2G mobile communication network and register to the mobile communication network.

13. The data management method of the 4G multimode dual-card mobile terminal according to claim 11, wherein after the step S25 is completed, the network mode of the SIM _ a is automatically changed from the first network mode to the second network mode.

14. The data management method of a 4G multimode dual-card mobile terminal according to claim 12, wherein in step S35, the AP module of the mobile terminal notifies the CP module of SIM _ a and the CP module of SIM _ B, and performs packet switching, and the CP module of SIM _ a establishes data service on SIM _ a; the CP module of the SIM _ a registers with the mobile communication network.

15. The data management method of the 4G multimode dual-card mobile terminal according to claim 11, wherein after the step S35 is completed, the network mode of the SIM _ a is automatically changed from the network mode two to the network mode one; at this time, if there is a campeable 4G serving cell, the SIM _ a is registered in the 4G mobile communication network, otherwise, it is temporarily switched to the 3G or 2G mobile communication network to expect the opportunity to reselect, or switch, or redirect, or CCO to the 4G mobile communication network in the 4G, 3G, 2G overlay coverage cell.

16. A4G multimode dual-card mobile terminal has a dual-card dual-standby function, comprises two SIM cards which are both 4G multimode SIM cards, both support VoLTE voice service and both support SRVCC to switch voice call to UMTS or GSM; the first SIM card is called as SIM _ A, and the second SIM card is called as SIM _ B; the 4G multimode dual-card mobile terminal is characterized by comprising a prompt selection unit, a re-residing unit, a first registration reporting unit, a deactivation unit and a second registration reporting unit;

the prompting selection unit is used for prompting a user to select whether to switch the network mode of the SIM _ A or not when the SIM _ B starts the data service or the SIM card bearing the data service is switched from the SIM _ A to the SIM _ B;

the re-resident unit is used for changing to resident in a 3G or 2G mobile communication network if the SIM _ A is resident in a 4G mobile communication network before when the user selects to switch the network mode of the SIM _ A, and reporting that the SIM _ A does not support the 4G mobile communication network when registering to the mobile communication network;

the registration reporting unit I is used for reporting that the SIM _ A supports the 4G mobile communication network when registering to the mobile communication network when the SIM card bearing the data service is switched back to the SIM _ A from the SIM _ B;

the deactivation unit is used for automatically deactivating the IMS and the PDN thereof when the user selects not to perform network mode switching of the SIM _ A, and reporting that VoLTE is not supported when the SIM _ A is registered in the mobile communication network again;

the second registration reporting unit 50 is used to report support of VoLTE when the SIM _ a is registered again in the mobile communication network and activate the IMS and PDN thereof when the SIM card carrying the data service is switched from the SIM _ B to the SIM _ a.

17. The 4G multimode dual-card mobile terminal according to claim 16, wherein the re-camping unit is changed to a first packet switching unit, and the first registration reporting unit is changed to a second packet switching unit;

the first packet switching unit is used for switching packet switching to an SIM _ B when a user selects to switch the network mode of the SIM _ A, and establishing a data service on the SIM _ B; when the data service registration of the SIM _ B is not the MMS multimedia message service, if the SIM _ A is resident in the 4G mobile communication network before, the SIM _ A is resident in the 3G or 2G mobile communication network, and simultaneously, the SIM _ A is reported to not support the 4G mobile communication network when the SIM _ B is registered in the mobile communication network; when the data service registration of the SIM _ B is the MMS multimedia message service, the SIM _ A keeps the original mode to reside;

and the second packet switching unit is used for switching packet switching to the SIM _ A when the SIM card bearing the data service is switched back to the SIM _ A from the SIM _ B, establishing the data service on the SIM _ A, and reporting that the SIM _ A supports the 4G mobile communication network when registering to the mobile communication network.