CN114125816A

CN114125816A - User equipment and network switching method and device thereof

Info

Publication number: CN114125816A
Application number: CN202110749404.0A
Authority: CN
Inventors: 赵文龙; 睢菲菲; 王鑫; 汪峰
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2020-08-28
Filing date: 2021-07-01
Publication date: 2022-03-01
Anticipated expiration: 2041-07-01
Also published as: CN114125816B

Abstract

The application is applicable to the technical field of communication, and provides user equipment and a network switching method and device thereof, wherein the network switching method is applied to the user equipment, the user equipment comprises a first SIM card and a second SIM card, and the method comprises the following steps: detecting state information of a first SIM card when the first SIM card resides in a first network; when the state information meets the preset condition, judging whether the second SIM card meets the preset network switching requirement or not through the network information of the second SIM card; and when the network message of the second SIM card meets the preset network switching requirement, accessing and residing the second SIM card in a second network. Because the network information of the second SIM card can be acquired without the first SIM card being in an idle state, whether the second SIM card meets the preset network switching requirement can be acquired more timely and effectively, the second SIM card is accessed and reserved in the second network more timely, and the convenience of network switching is improved.

Description

User equipment and network switching method and device thereof

Technical Field

The present application belongs to the field of communications technologies, and in particular, to a user equipment, and a network switching method and apparatus thereof.

Background

With the development of communication technology, two or more SIM cards are often set in the same user equipment (such as a mobile phone), and each SIM card can support multiple communication systems, so that the communication requirements of people for different SIM cards and different network systems can be met. For example, a first SIM card in a dual-card handset may belong to operator a, and a second SIM card may belong to operator B. In the using process, if the network signal with higher standard received by the first SIM is weaker, and the network signal with higher standard received by the second SIM card is stronger, the data service can be switched to the second SIM card, thereby ensuring the high-speed communication requirement of the user for the data service.

Before accessing the second network, whether the second SIM card can be accessed to the second network needs to be detected. Currently, it is common to acquire a second network whether a second SIM card can be registered or accessed while the first SIM card is in an idle mode. Because the first SIM card needs to be in the idle mode when the second SIM card is determined, it is not beneficial to timely and effectively acquire the accessible information of the second SIM card when the mobile phone is in the use state, and it is not beneficial to improve the convenience of network switching.

Disclosure of Invention

The embodiment of the application provides user equipment and a network switching method and device thereof, and aims to solve the problems that in the prior art, when the user equipment carries out double-card switching, the user equipment cannot timely and effectively acquire accessible information of two SIM cards, and the convenience of network switching is not improved.

In a first aspect, an embodiment of the present application provides a network switching method, where the network switching method is applied to a user equipment, where the user equipment includes a first SIM card and a second SIM card, and the method includes: detecting state information of a first SIM card when the first SIM card resides in a first network; when the state information meets the preset condition, judging whether the second SIM card meets the preset network switching requirement or not through the network information of the second SIM card; and when the network message of the second SIM card meets the preset network switching requirement, accessing and residing the second SIM card in a second network.

The state information of the first SIM card residing in the first network may include link parameter information of the first SIM card residing in the first network, or information of an application program executed by the first SIM card residing in the first network. According to the difference of the state information, the preset condition may be whether the link parameter meets the requirement, or may also be whether a predetermined application program is run, or a predetermined kind of application program. And when the state information of the first SIM card residing in the first network meets the preset condition, judging whether the second SIM card meets the switching requirement or not according to the network information of the second SIM card. Because the network information of the second SIM card can be acquired without the first SIM card being in an idle state, whether the second SIM card meets the preset network switching requirement can be acquired more timely and effectively, the second SIM card is accessed and reserved in the second network more timely, and the convenience of network switching is improved.

With reference to the first aspect, in a first implementation manner of the first aspect, the state information includes a link parameter of the user equipment residing in the first network through the first SIM card, and the state information meeting a preset condition includes: and when the link parameter of the user equipment residing in the first network through the first SIM card is smaller than a preset threshold value, the state information meets a preset condition.

When the state information is a link parameter of the first SIM card residing in the first network, and whether the state information satisfies a preset condition is determined, whether the link parameter is greater than a preset threshold may be determined. If the link parameter is greater than the predetermined threshold, it indicates that the first SIM card may effectively reside in the first network, and no handover may be performed. When the link parameter is less than or equal to the predetermined threshold, it indicates that the signal of the first SIM card residing in the first network is weak, and it may be further searched whether the second SIM card can access the second network.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the accessing and residing the second SIM card in a second network includes: the user equipment initiates a flow that the first SIM card is detached from the first network; and the user equipment initiates a process of attaching the second SIM card to the second network.

If the first network and the second network are networks of the same system and at the same time, the user equipment only allows a single SIM card to reside, when the second SIM card is accessed and resides in the second network, the user equipment initiates a flow of the first SIM card to attach to the first network, so that the first SIM card does not support the first network, and after the first network is completely detached, the user equipment initiates a flow of the second SIM card to attach to the second network, so that the second SIM card is accessed and resides in the second network. For example, when the first network and the second network are 5G networks, the user equipment first initiates a flow of the first SIM to attach to the 5G network, that is, the first SIM card cancels the capability of supporting the 5G network. After the first SIM card completes the detachment of the 5G network, the user equipment accesses and resides in the 5G network by initiating the flow of the second SIM card to attach the 5G network.

With reference to the first possible implementation manner of the first aspect or the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the first network and the second network are networks of the same standard or networks with the same priority.

When the first network and the second network are networks of the same standard, the preset condition may be that a link parameter of the user equipment residing in the first network through the first SIM card is smaller than a preset parameter, that is, when the first SIM card does not satisfy the stable and reliable residence in the first network, the second network is accessed through the second SIM card, so as to satisfy the communication use requirement of the user. For example, the first network and the second network may be 5G networks. Or, the user equipment may receive the priority order set by the user, and when the first network with higher priority does not meet the stable and reliable communication requirement, the second SIM card is made to reside in the second network by searching, so as to meet the use requirement of the user on the communication system with higher priority.

With reference to the first aspect, the first possible implementation manner of the first aspect, the second possible implementation manner of the first aspect, or the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, an operator to which a first network to which the first SIM card resides belongs is the same as or different from an operator to which a second network to which the second SIM card accesses belongs.

When the operator to which the first network where the first SIM card resides is different from the operator to which the second network where the second SIM card accesses, and the user is located at a different location, the signal quality of the first network where the first SIM card resides may be different from the signal quality of the second network where the second SIM card accesses.

With reference to the first aspect, in a fifth possible implementation manner of the first aspect, the state information includes running information of an application program when the user equipment resides in the first network through the first SIM card.

When the first SIM card resides in the first network, the operation information of the application program in the user equipment may be detected, and whether it is necessary to determine whether the network information of the second SIM card meets the preset network switching requirement is determined according to the operation information of the application program. The running information of the application program may include data service requirement information of the application program. For example, the data volume of the data service of the application program is required, and the real-time performance or stability of the data service of the application program is required.

With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the running information of the application includes a type of the running application, and the state information satisfies a preset condition, including: and when the type of the running application program is consistent with the preset application program type, the state information meets the preset condition.

Monitoring the application program which runs when the first SIM card resides in the first network by presetting the corresponding relation between the type of the application program and whether the preset condition is met, and confirming that the motion information of the application program meets the preset condition when the situation that the application program is monitored to meet the type of the preset application program is monitored. By setting the type of the application program, the special requirements of the application program on the data service can be met. For example, an application program for playing high definition video has a high requirement on data transmission speed. And when the type of application program movement is monitored, detecting whether the second SIM card can be accessed to a second network with higher communication speed.

With reference to the fifth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the running information of the application includes a speed requirement or a stability requirement of data of the running application, and the state information meets a preset condition, which includes: when the speed requirement of the data of the running application program is greater than a preset speed threshold value, the state information meets a preset condition; or, when the stability requirement of the running application program is greater than a predetermined stability threshold, the state information satisfies a preset condition.

The set second network may be different according to the preset condition. For example, when the preset condition is a stability requirement, the second network may be a network system with better stability. When the predetermined condition is a speed requirement, the second network may be a network type with a better communication speed.

With reference to the first aspect, the first possible implementation manner of the first aspect, the second possible implementation manner of the first aspect, the third possible implementation manner of the first aspect, the fourth possible implementation manner of the first aspect, the fifth possible implementation manner of the first aspect, the sixth possible implementation manner of the first aspect, or the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, when the status information satisfies the pre-condition, the second network type is a network type higher than a current network type of the first SIM card, or a network type higher than a priority of the current network type of the first SIM card.

When the first SIM card meets the preset condition, the link parameter of the first SIM card and the first network is smaller than a preset threshold value and resides in a third network with a system lower than that of the first network. For example, the first SIM card is converted from residing in a 5G network to residing in a 4G network, and in order to meet the communication requirement of the user, a network standard higher than the network standard in which the user equipment currently resides is searched. Or, according to a preset priority sequence, searching the access information of the second network with higher priority of the current network system of the first SIM card, and meeting the use requirement of the user on the high-priority network.

With reference to the first aspect, the first possible implementation manner of the first aspect, the second possible implementation manner of the first aspect, the third possible implementation manner of the first aspect, the fourth possible implementation manner of the first aspect, the fifth possible implementation manner of the first aspect, the sixth possible implementation manner of the first aspect, the seventh possible implementation manner of the first aspect, or the eighth possible implementation manner of the first aspect, in a ninth implementation manner of the first aspect, the second network is a 5G network, and determining, by using the network information of the second SIM card, whether the second SIM card meets a preset network switching requirement includes: when the 5G network is a non-independent networking NSA architecture, acquiring a network message through a second SIM card; and analyzing the network message to obtain an indication message of a second network, and judging whether the second SIM card is allowed to access the second network according to the indication message.

And on the premise of not interrupting the normal communication of the first SIM, determining whether the second SIM card can be accessed to a second network or not through network information by acquiring the network information of the second SIM card. The network message of the second SIM card may include a system message when the second SIM card is registered, or may include a cell where a network where the second SIM card resides belongs, or a public land mobile network where the second SIM card belongs. And determining whether the preset network switching requirement is met or not according to the preset corresponding relation.

With reference to the ninth possible implementation manner of the first aspect, in a tenth possible implementation manner of the first aspect, the network message is a system message SIB 2.

The cell capacity indication message can be obtained by analyzing the system message in the network message acquired by the second SIM card during registration, and whether the second SIM card meets the preset network switching requirement can be determined according to the indication message.

With reference to the ninth possible implementation manner of the first aspect, in an eleventh possible implementation manner of the first aspect, when the network message does not include the indication message of the second network, the method further includes: acquiring a cell to which the position of user equipment belongs; and determining whether the second SIM card allows to access the second network according to the pre-recorded corresponding relation between the cell and the second network.

According to the preset corresponding relation between the cell and the second network, the cell information of the user equipment can be determined through the first SIM card or the second SIM card, and whether the user equipment can access the second network is determined. Therefore, the user equipment can timely and efficiently acquire whether the second SIM card meets the requirement of network switching.

With reference to the ninth possible implementation manner of the first aspect, in a twelfth possible implementation manner of the first aspect, when the network message does not include an indication message of a second network, the method further includes: acquiring a public land mobile network to which the position of the user equipment belongs; and determining whether the second SIM card allows to access the second network according to the pre-recorded corresponding relation between the public land mobile network and the second network.

According to the preset corresponding relation between the PLMN and the second network, the public land mobile network corresponding to the user equipment can be determined through the first SIM card or the second SIM card, and whether the user equipment can access the second network is determined. Therefore, the user equipment can timely and efficiently acquire whether the second SIM card meets the requirement of network switching.

In a second aspect, an embodiment of the present application provides a network switching apparatus, where the network switching apparatus is applied to a user equipment, where the user equipment includes a first SIM card and a second SIM card, and the apparatus includes: the state information detection unit is used for detecting the state information of the first SIM card when the first SIM card resides in the first network; the switching requirement judging unit is used for judging whether the second SIM card meets the preset network switching requirement or not through the network information of the second SIM card when the state information meets the preset condition; and the access unit is used for accessing and residing the second SIM card in a second network when the network message of the second SIM card meets the preset network switching requirement.

In a third aspect, an embodiment of the present application provides a user equipment, where the user equipment includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor, when executing the computer program, causes the user equipment to implement the method according to any one of the first aspect.

In a fourth aspect, the present application provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer program implements the method according to any one of the first aspect.

It is understood that the beneficial effects of the second to fourth aspects can be seen from the description of the first aspect, and are not described herein again.

Drawings

Fig. 1 is a schematic view of an implementation scenario provided in an embodiment of the present application;

fig. 2 is a schematic diagram of another implementation scenario provided in the embodiment of the present application;

fig. 3 is a schematic diagram of another implementation scenario provided in the embodiment of the present application;

fig. 4 is a schematic diagram illustrating an implementation flow of a network handover method according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating classification of a 5G network architecture according to an embodiment of the present application;

fig. 6 is a schematic diagram of an interaction network of option 1 of the 5G network architecture provided in the embodiment of the present application;

FIG. 7 is a schematic diagram of sub-option categories provided in an embodiment of the present application;

fig. 8 is a schematic flowchart of handover to a second network according to an embodiment of the present application;

fig. 9 is an interaction diagram for acquiring location information of a user equipment according to an embodiment of the present application;

fig. 10 is an interaction diagram of a 5G network handover procedure according to an embodiment of the present application;

fig. 11 is an interaction flow diagram of a first SIM card notifying a change in network capability according to an embodiment of the present application;

fig. 12 is an interaction flow diagram of a second SIM card notifying a change in network capability according to an embodiment of the present application;

fig. 13 is a schematic block diagram of a network switching apparatus according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a mobile phone according to an embodiment of the present application;

fig. 15 is a schematic diagram of a software structure of a mobile phone according to an embodiment of the present application.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

At present, in order to meet the requirement that a user can use multiple communication numbers in a single device, two or more card slots are often provided in the same user device, for example, the same mobile phone, and the dual-card dual-standby function of the mobile phone is realized by installing two or more SIM cards in the two or more card slots. With the development of 5G communication technology, more and more mobile phones have 5G communication functions. And due to the aspects of cost, technology, power consumption and the like, only one SIM card is generally allowed to support the 5G communication function at the same time.

In the early days of commercial use of 5G communication systems, the coverage areas of 5G base stations deployed by different operators are different. In a possible application scenario, when two or more SIM cards are configured in a mobile phone and operators corresponding to the SIM cards are different, the SIM cards supporting 5G communication capability may need to be switched in different areas, so that the mobile phone can be connected to a 5G network according to the switched SIM cards, and the requirement that the mobile phone can obtain data at a high speed is met.

For example, a mobile phone of a user is configured with two mobile phone cards, which are a first SIM card and a second SIM card. The operators to which the first SIM card and the second SIM card belong are operator B1 and operator B2, respectively. The activity areas of the user holding the handset include area a1 and area a2, where area a1 is covered with the 5G signal of carrier B1 and area a2 is covered with the 5G signal of carrier B2.

When the user is in the area a1, the first SIM card in the handset supports 5G communication capability, and can communicate with the 5G base station deployed by the carrier B1. When the user is located in the area a2, the handset can switch to the second SIM card in response to the user operation, or automatically switch to the second SIM card, and perform communication through the 5G base station deployed by the operator B2, so that the handset can perform high-speed data interaction with other terminals or servers in both the a1 area and the a2 area by using a 5G communication method.

The currently adopted switching mode includes acquiring network information registered by a first SIM card, judging whether the first SIM card is in a preset network system or not according to the acquired network information of the first SIM card, and acquiring a network system which can be registered by a second SIM card in an idle mode if the first SIM card is not in the preset network system; and judging whether the network system of the second SIM card meets the preset condition, and if so, switching to the second SIM card to connect the data network.

The first SIM card is in an idle mode, which means that the mobile phone is powered on but does not allocate a channel, that is, the mobile phone does not have behaviors such as short message, multimedia message, telephone, internet access, and the like.

Because the switching mode needs specific conditions, the network system which the second SIM card can register can be acquired only when the mobile phone is detected to be in the idle state. And when the first SIM card is not in an idle state, the network system which can be registered by the second SIM card cannot be acquired. For example, when the mobile phone is in a working state, including when the mobile phone is using the first SIM card to surf the internet, the network standard that the second SIM card can register cannot be obtained, and it cannot be timely and effectively detected whether the second SIM card can be switched to the predetermined network standard.

Or even if the mobile phone is in the idle mode, the network system which the second SIM card can register is obtained. If the second SIM card does not support 5G communication, i.e. the second SIM card is not set to adopt 5G mode communication, it is still not possible to switch the second SIM card to the 5G network according to the network standard that the second SIM card can register.

In this case, the handset can detect whether the second SIM card can register to the 5G network only when the application program currently occupying the channel is closed or the second SIM card supports 5G communication. The whole operation process is troublesome, and especially for the application program with the background occupying the channel, the user operation is more inconvenient.

Therefore, in order to solve the problem that whether the second SIM card can be registered in the second network cannot be obtained in time and improve the convenience of network switching, the embodiment of the present application provides a new network switching method. According to the new network switching method, the state information of the first SIM card residing in the first network is detected, when the detected state information meets the preset condition, whether the second SIM card meets the preset network switching requirement is detected through the network information of the second SIM card, so that whether the second SIM card meets the switching requirement can be detected without the first SIM card being in an idle mode, the detection efficiency is higher, and a user can obtain better network use experience.

In one implementation, the second network may be a higher-standard network or a higher-priority network with respect to the first network during handover. By monitoring the state information of the first SIM card residing in the first network, the network information of the second SIM card is detected when the link parameter between the first SIM card and the second network is lower than a preset threshold value. Whether the link parameter between the second networks is larger than a preset threshold value or not is detected through the network information, or whether the link parameter between the second SIM card and the second networks is larger than the preset threshold value or not is detected through other modes, and whether the preset network switching requirement is met or not can be determined.

If the detected link parameter of the second network is greater than the predetermined threshold value, the preset network switching requirement is met, that is, the second network supports the second SIM card switching, and the second SIM card can be controlled to perform network switching. Through network switching, the network connected with the second SIM card can be switched to the second network, i.e. a communication link between the user equipment and the second network is established through the second SIM card. The mode of switching the network may include a mode of generating a prompt message to prompt the user to switch the communication mode of the second SIM card to the second network. Or, the communication system of the second SIM card may be automatically switched to the second network.

In a possible implementation, if the user equipment supports only a single SIM card residing in the second network at the same time, the first SIM card notifies the network of the capability change before the communication network of the second SIM card is switched to the second network, i.e. the first SIM card initiates a detach procedure of the first network, notifying the first network of the capability change of the first SIM card. The second SIM card initiates an attachment process to the second network, and informs the second network about the change of the capability of the second SIM card.

And if the link parameter between the second SIM card and the second network is detected to be smaller than the preset threshold value, namely the second SIM card does not meet the preset network switching requirement, the network switching of the second SIM card is not carried out. The link parameters of the first SIM card may be re-detected after a predetermined time interval, or the link parameters of the second SIM card may be re-detected.

The second network described in this embodiment of the present application may be a single network specified in advance, or may also be one or more networks with higher system than the network currently used by the first SIM, or may also be one or more networks with higher priority than the system of the network currently used by the first SIM card.

For example, when the second network is a pre-designated single network, the second network may be a pre-designated 5G network.

When the second network is one or more networks with higher standards than the network currently used by the first SIM card, if the current network of the first SIM card is a 2G network, the second network may be any one of a 3G network, a 4G network, or a 5G network, or may further include other networks with higher standards.

When the second network is one or more networks with higher priority relative to the standard of the network currently used by the first SIM card, if the preset priorities of the networks are N1, N2 and N3 in sequence, when the current network of the first SIM card is the N1 network, the second network may be any one of the N2 network and the N3 network. The preset network priority may be flexibly set according to the user's requirement, or the network priority may be determined according to the user's usage habit, for example, the network priority may be determined according to the user selection information.

In a possible implementation manner, when the second network is a 5G network system, if the link parameter between the first SIM card and the 5G network is smaller than a predetermined threshold, whether the link parameter between the second SIM card and the 5G network is greater than the predetermined threshold may be determined according to a network message detected by the second SIM card or other manners. If the link parameter between the second SIM card and the 5G network is larger than the preset threshold value, the communication mode of the second SIM card is switched to the 5G network mode, and the data service of the user can be switched to the second SIM card. Or before the communication system of the second SIM card is switched to the 5G network system, the first SIM card sends a notification that the 5G network system is not supported to the network. If the current network does not support the switching of the second SIM card, namely the link parameter between the second SIM card and the 5G network is smaller than the preset threshold value, the communication mode of the second SIM card is not switched to the 5G network mode.

The detection of the link parameter between the SIM card (the first SIM card or the second SIM card) and the second network may include detection of signal strength between the SIM card and a base station of the second network, that is, detection of whether strength of a base station signal of the second network received by the user equipment through the SIM card is greater than a predetermined threshold. If the strength of the base station signal of the second network received by the electronic equipment is greater than the predetermined threshold value, it indicates that the cell supports the SIM card to be connected to the second network.

In this embodiment of the present application, the operators to which the first SIM card and the second SIM card belong may be the same operator or different operators. When the operators to which the first SIM card and the second SIM card belong are different, the ranges of the base stations deployed by the operator to which the first SIM card belongs and the operator to which the second SIM card belongs may be the same or different within the range of the user's activity.

In one possible implementation scenario, as shown in fig. 1, a first SIM card and a second SIM card are included in the same user equipment. Within the user's range of motion, base station B1 and base station B2 are included. The base station B1 is deployed by an operator to which the first SIM card belongs, and the base station B2 is deployed by an operator to which the second SIM card belongs. Areas through which a movement trajectory of a user holding the user device passes include an area a1 and an area a 2. Wherein base station B1 is located in area a1 and base station B2 is located in area a 2. The ue may receive the bs signal sent by the bs B1 in the area a1, and when the ue is in the area a1, the detected network of the first SIM card is the network corresponding to the bs B1, that is, the first network, and at this time, network switching may not be performed.

When the user equipment moves from the area a1 to the area a2, the link parameters of the communication link established by the user equipment through the first SIM card and the network corresponding to the base station B1 may gradually decrease, and when the network corresponding to the base station B1 does not support the first SIM card, the first SIM card may still reside in the first network or be disconnected from the first network. The second SIM card may obtain network information of the second network, and determine whether a link parameter between the second SIM card and the second network is greater than a predetermined threshold value through the network information, or determine whether a link parameter between the second SIM card and the second network is greater than a predetermined threshold value through other manners.

If the second network can support the second SIM card according to the detection result, namely when the link parameter between the second SIM card and the second network is greater than the preset threshold value, prompt information can be generated to prompt the user to access the second network by the second SIM card or automatically access the second network. If it is detected that the second network does not support the second SIM card, the second SIM card may not perform network switching.

In one possible implementation scenario, as shown in fig. 2, the operators to which the first SIM card and the second SIM card belong are the same. The user is within the coverage of base station B1 deployed by the operator to which the first SIM card and the second SIM card belong. In this implementation scenario, the first network may be the same as the second network, such as both may be 5G networks.

At a first time, connection information between the first SIM card and a first network is detected. When the first network does not support the first SIM card, for example, the link parameter of the first SIM card with the first network is smaller than a preset threshold, the first SIM card may still reside in the first network or be disconnected from the first network. Whether a link parameter between the second SIM card and the second network is greater than a predetermined threshold value or not may be detected, and if the link parameter is greater than the predetermined threshold value, a prompt message may be generated to prompt the user to access the second network by the second SIM card or automatically access the second network. If it is detected that the second network does not support the second SIM card, the second SIM card may not perform network switching.

In one possible implementation scenario, as shown in fig. 3, the operators to which the first SIM card and the second SIM card belong are different. The operator to which the first SIM card belongs deploys base station B1, and the operator to which the second SIM card belongs deploys base station B2, and the user's range of motion belongs to the signal coverage area of base station B1 and the signal coverage area of base station B2. In this case, the coverage areas of the base station B1 and the base station B2 may be the same or different. The first network and the second network may be the same network or different networks.

At a first time, when the first network does not support the first SIM card, the first SIM card may still reside in the first network or be disconnected from the first network. Whether a link parameter between the second SIM card and the second network is greater than a predetermined threshold value or not may be detected, and if the link parameter is greater than the predetermined threshold value, a prompt message may be generated to prompt the user to access the second network by the second SIM card or automatically access the second network. If it is detected that the second network does not support the second SIM card, the second SIM card may not perform network switching.

In an implementation manner, a network device in this embodiment of the present application includes a first SIM card and a second SIM card, and as shown in fig. 4, a network switching method in this embodiment of the present application may include:

s401, detecting state information of the first SIM card residing in the first network.

The first network may be any network type in the user equipment.

For example, the first network may be a 5G network, and the user equipment maintains data service connection with the 5G network through the first SIM card. Of course, the first network may also be a 4G network, a 3G network, or a 2G network, etc., and may be updated and changed continuously according to the use status of the user.

The status information may include link parameters of the first network, or may include an application or a type of application currently using the data service, or may also be one or more of speed information or stability information of the data service of the currently running application.

The application program for monitoring the data service may be the currently running application program, or the category to which the currently running application program belongs, or the speed requirement of the data service of the monitoring application program, or the stability requirement of the data service of the monitoring application program. Or to monitor the speed requirements and stability requirements of the data traffic of the currently running application.

The stability of data can be measured by the probability of data packet loss.

In a possible implementation, the applications using the data service are monitored, and the applications can be sorted according to the data speed used by the applications, so as to obtain an application list including sorting information.

S402, when the state information meets the preset condition, judging whether the second SIM card meets the preset network switching requirement or not through the network information of the second SIM card.

When the state information satisfies the preset condition, according to the content of the state information, the following situations may be included:

when the state information is a link parameter of the first SIM card and the first network, the state information satisfies a preset condition, that is, the link parameter of the first SIM card and the first network is smaller than a preset threshold. That is, the quality of the connection between the first SIM card and the first network is degraded, and at this time, the first SIM card resides in the first network, or the first SIM card is disconnected from the first network.

When the state information is operation information of an application program when the first SIM card is connected to the first network, the specific situation that the preset condition is satisfied may be determined according to the type of the set operation information, and the determining may include:

and when the set running information is the application program type, detecting the currently running application program and determining the corresponding type of the application program. And if the type of the currently running application program is consistent with the set type of the application program, the state information meets the preset condition.

For example, the preset application program category includes a high definition video playing type. When detecting that an application program running in user equipment includes a high-definition video playing component, the application program can be identified as a high-definition video playing type. And according to the detection result, when the type of the running application program is identified to comprise the preset application program, confirming that the second SIM card needs to be switched to the second network.

In some implementations, the method may further include presetting an application program to be switched, acquiring features of the application program to be monitored, and training the application program classification model according to the set features of the sample application program. And enabling the classification result output by the application program classification model to be consistent with the classification result of the sample, and obtaining the trained application program classification model. The classification result of the application program may include an application program that needs to be switched and an application program that does not need to be switched. The characteristics of the application program can comprise one or more of the characteristics of data type of interaction of the application program, protocol type of data of the application program, data volume size of communication data of the application program, data stability requirement level of the application program and the like.

By the application program classification model, the currently running application program of the user equipment can be detected and analyzed, and whether the communication system of the second SIM card needs to be switched to a second network or not is judged. Therefore, the requirement of the user for using the application program installed in the user equipment can be better met.

And when the set running information is the name of the application program, if the name of the currently running application program is detected to be consistent with the set name of the application program, the state information meets the preset condition.

For example, an application program X for playing a high-definition video, such as a 10K video, is set in the application program list in advance, and when it is detected that the application program X is in an operating state in the user equipment and it is possible that a first SIM card in the user equipment does not establish a data connection with a second network, in order to obtain a more stable and smooth data video playing experience, it may be detected whether the second network supports the second SIM card, that is, whether a link parameter between the second SIM card and the second network is greater than a predetermined threshold.

When the content included in the data service state is the traffic information of the first SIM card, it may be determined whether the service data needs to be switched to the second SIM card according to the remaining traffic information, and a data connection between the second SIM card and the second network is established.

For example, the first SIM card establishes a data connection with the second network or the non-second network, and obtains the remaining amount of the first SIM card data package after obtaining the data package corresponding to the first SIM card. And when the residual amount of the data package of the first SIM card is less than a preset value, confirming that the second SIM card needs to be switched to, and establishing data connection between the second SIM card and a second network.

And when the set running information is the stability or the data speed of the application program, detecting the stability or the data speed of the currently running application program, and if the detected stability or the data speed does not meet the preset condition or is less than the preset threshold value, the state information meets the preset condition.

The detection frequency of the data interaction speed of the first SIM card can be determined according to the change of the location of the user equipment. When the position change speed of the user equipment is high, the data interaction speed of the first SIM card can be acquired by adopting high detection frequency; when the position change speed of the user equipment is slow, the data interaction speed of the first SIM card can be acquired by adopting a low detection frequency.

The network information of the second SIM card may be determined by selecting a network message corresponding to a second network according to the difference of the second network.

For example, when the second network is a 5G network system, the types of the 5G network include an NSA (non-standalone architecture in chinese, and non-standalone architecture in english), and an SA (standalone architecture in chinese, and standadone in english).

The NSA architecture refers to deployment of a 5G network using existing 4G base station facilities. The 5G carrier based on the NSA architecture carries only user data, and its control signaling is still transmitted through the 4G network. The SA architecture refers to a newly established 5G network, including a new base station, a backhaul link, and a core network. While introducing a brand-new network element and interface, the SA mode also combines large-scale adoption of new technologies such as network virtualization, software defined networking and the like with the new wireless NR of 5G.

On the 72 th universal college of 3GPP-TSG-RAN, 8 options are proposed. As shown in fig. 5, the 8 options are divided into two groups, i.e., an independent networking SA and a dependent networking NSA. Wherein, options 1, 2, 5, and 6 are independent networking SAs, and

options

3, 4, 7, and 8 are non-independent networking NSAs.

Options

3, 4, 7 of the non-independent networking NSA have different sub-options. Option 3 includes sub option 3, sub option 3a, sub option 3x, option 4 includes sub option 4 and sub option 4a, and option 7 includes sub option 7, sub option 7a, and sub option 7 x.

As shown in fig. 6, option 1 is already implemented in a 4G network structure, where a mobile phone directly performs interaction between a control plane and a user plane with a 4G base station, and the 4G base station directly performs data interaction between the control plane and the user plane with a 4G core network. The control plane is a channel for transmitting signaling required for management and high-level resources. The user plane refers to a channel for transmitting user-specific data. In option 1, the user plane and the control plane are completely separated.

Option 2 is that the mobile phone is directly connected to the 5G base station, and the 5G base station is directly connected to the 5G core network. The 5G base station and the 5G core network directly perform data interaction of a control plane and a user plane; the mobile phone and the 5G base station directly carry out data interaction between a control plane and a user plane.

Option 5 is that the handset is directly connected to the enhanced 4G base station, and the enhanced 4G base station is directly connected to the 5G core network. The enhanced 4G base station and the 5G core network directly perform data interaction of a control plane and a user plane; the mobile phone and the enhanced 4G base station directly perform data interaction between a control plane and a user plane.

Option 6 is that the handset is directly connected to the 5G base station, and the 5G base station is directly connected to the 4G core network. The 5G base station and the 4G core network directly perform data interaction of a control plane and a user plane; the mobile phone and the 5G base station directly carry out data interaction between a control plane and a user plane.

For the non-independent networking mode, it is more complex than the independent networking mode. For example, in the option 3 series, the core network to which the base station is connected is a 4G core network, and the control plane anchor point is set in the 4G base station. Option 3 includes sub-option 3, sub-option 3a, and sub-option 3x, as shown in fig. 7, sub-option 3 includes an enhanced 4G base station, a 5G base station, and a 4G core network, sub-option 3a includes a 4G base station, a 5G base station, and a 4G core network, and sub-option 3x includes a 4G base station, a 5G base station, and a 4G core network.

In sub-option 3, the control plane and the user plane of the 5G base station are both connected to the 4G core network through the enhanced 4G base station. In the sub-option 3a, the user plane data of the 5G base station is directly connected to the 4G core network, and the control plane data is connected to the core network through the 4G base station. In the sub-option 3x, the user plane data of the 5G base station may interact with the 4G core network directly, or may interact with the 4G core network through the 4G base station.

Although NSA is relatively complex, it is advantageous to extend 5G coverage by means of the currently mature 4G networks. Because the coverage range of the 5G network is mainly limited by uplink, the expansion of the coverage range of the 5G single station can be realized in a mode of combining with the 4G network, a new core network does not need to be built, and under the NSA networking, the 5G base station utilizes the existing 4G core network, so that the construction of the 5G core network can be saved, the network construction cost is favorably reduced, and the NSA standard is more mature.

In a possible implementation scenario, when determining whether the communication system of the second SIM card can be switched to the second network according to the network information of the second SIM card, the network information of the second SIM card may include a system message. For example, the SIB2 (system message 2) message in the received signaling message may be parsed. The 3GPP (3G communication cooperation specification) has added a field related to NSA in SIB2, which can be used for NSA cell capability indication. Identification resolution based on the NSA related field in the SIB2 may be added to the user equipment to obtain an identification result of the 5G network whether the second SIM card is in the second network.

For example, the SIB2 signaling of the second SIM card includes:

PLMN-Infolist-r15：：＝SEQUENCE(SIZE(1..maxPLMN-r11))OF PLMN-info-r15

PLMN-Infolist-r15：：＝SEQUENCE{upperlayerIndication-r15 ENUMERATED(ture)OPTIONAL--Need OR}

when reading the SIB2 message, an upper layer indication switch may be detected, and when the upper layer indication is true (true), it indicates that the second SIM card may be switched to the second network, that is, a link parameter between the second SIM card and the second network meets a preset requirement.

The process of acquiring the SIB2 message by the UE and determining to switch to the second network is shown in fig. 8, and mainly includes steps of UE (user equipment) initialization information acquisition, PLMN (public land mobile network) selection, LTE scanning, cell search, system message resolution, and cell camping.

In the UE initialization information obtaining step, the UE initialization mainly includes SIM card identification and NV (Non Volatile storage in english, and Non Volatile storage in chinese, which refers to data that is stored in the memory and will not be lost after the system is powered down) item reading related to network searching.

The NV item comprises access technology, a network searching mode, service domain selection and LTE frequency band information. The access technology may employ auto-auto, 2G, 3G, 4G, 5G, etc. options. The network searching mode may include automatic searching and manual searching options, and the service domain selection information may be packet switched PS only, circuit switched CS only, or packet switched PS + circuit switched CS.

The PLMN selection may include automatic network searching and manual network searching. The automatic network searching means that the UE automatically completes the searching and selecting of the PLMN according to a preset priority criterion. The manual network searching means that the UE presents the PLMN list meeting the conditions to the user and the user selects the PLMN list.

In the LTE scanning step, a system sweep (collectively called system scan) and a band sweep (collectively called band scan) may be included. The system scans the historical record frequency points, and stores the scanned historical record frequency points in the specified file of the preset path. The band sweep sweeps according to band information supported by the handset, typically from low to high.

The terminal searches the cell under the condition that the terminal does not know any information of the cell in advance, and three steps of time slot synchronization, frame synchronization and primary scrambling code capturing are needed. The involved downlink physical channels include: primary synchronization channel (P-SCH), secondary synchronization channel (S-SCH), primary common pilot channel (P-CPICH), primary common control physical channel (P-CCPCH).

The slot synchronization may use a matched filter to detect and capture the primary synchronization code to determine the slot boundaries of each physical channel. While realizing the frame synchronization of the physical channel, the UE can learn the slave synchronization code word combination used in the wireless frame of the cell, thereby determining the group of the primary scrambling code used by the cell. And finding out the primary scrambling code matched with the cell in the primary scrambling code group according to the level of the determined primary scrambling code, and finishing the work of capturing the primary mask.

The system-solving message mainly comprises reading MIB message and SIB message. The MIB message comprises the number of antennas, downlink bandwidth, cell ID and registered frequency point message. The SIB message includes PLMN, cell ID, and the like. When the PLMN in the SIB message is consistent with the PLMN obtained in the PLMN selection step, cell selection may be performed. Otherwise, scanning the next frequency point, and simultaneously solving the system information to obtain information such as the value of the reference signal power in the S standard.

The MIB message and the SIB message may be obtained by filtering an air interface message with an analysis tool.

And the cell residence process is judged according to the S criterion, when the scanning frequency point meets the signal intensity required by the UE, the cell residence is carried out, otherwise, the next frequency point is scanned.

In a possible implementation manner, when the SIB2 indication is not configured in the NSA network, it may be determined whether the communication scheme of the second SIM card can be switched to the second network through a pre-recorded correspondence between the second network of a different operator and the public land mobile network PLMN, or a pre-recorded correspondence between the cell ID and the second network.

When the second SIM card is not connected to the second network, the second SIM card searches whether a record matching with the PLMN in the SIB message exists or not or whether a record matching with the cell ID in the SIB message exists in a preset corresponding relationship through initialization, PLMN selection, and system message resolution through the messages such as PLMN and cell ID included in the SIB message read by the system message.

And when the record matched with the PLMN in the SIB message exists or the record matched with the cell ID in the SIB message exists, determining whether the second SIM card can be switched to the second network or not according to the corresponding relation between the PLMN in the record and the second network cell or the corresponding relation between the cell ID and the second network cell.

The pre-recorded corresponding relation can be updated and maintained according to the record of the successful switching of the user equipment, and the corresponding relation of the PLMN and the second network cell of the second SIM card can also be set and updated by staff.

The correspondence between the PLMNs and the second network cells of the second SIM card may be correspondence between a plurality of PLMNs and the second network cells of the second SIM card, or correspondence between signal strengths of a plurality of PLMNs and the second network cells of the second SIM card.

For example, it may be determined whether the second SIM card is currently supported to connect to the second network according to the searched correspondence between the PLMNs and the second network cell. When the searched PLMNs are matched with the PLMNs in the preset corresponding relationship, it indicates that the second SIM card can be switched to the second network.

Or, the searched PLMNs may be ranked, and the ranked PLMN sequence may be matched with a preset PLMN sequence. When the searched PLMN sequence is matched with the PLMN sequence in the preset corresponding relation, the second SIM card can be switched to a second network.

In a possible implementation manner, the location of the second network that is successfully switched to the second SIM card may also be recorded, and whether the second SIM card of the user equipment can be switched to the second network at the current location is determined according to the correspondence between the location and the coverage of the second network of the second SIM card.

As shown in fig. 9, a process of acquiring location information of a user equipment may include:

901, the UE sends a tracking area TA update request to the MME, and may start a T3430 timer to time, that is, the update timing starts.

After receiving the tracking area update request, the mobility management entity MME determines whether the GUTI (global Unique Temporary UE Identity) of the UE allows updating of the tracking area, and if so, may start the T3450 timer.

903, the mobility management entity MME sends a tracking area update response message to the user equipment UE.

904, the UE receives the tracking area update response message, may stop the T3430 timer, and send a tracking area update complete message to the MME.

905, when receiving the tracking area update completion message sent by the UE, the MME stops timing by the T3450 timer, and completes the location information update of the UE.

S403, when the network message of the second SIM card meets the preset network switching requirement, accessing and residing the second SIM card in a second network.

When the second network supports the second SIM card handover, for example, if the link parameter of the second SIM card and the second network is greater than the preset threshold, the second SIM card may be accessed to and reside in the second network.

In a possible implementation manner, if the network systems of the first network and the second network are the same, and the user equipment only supports that a single SIM card resides in the second network at the same time, before the communication network of the second SIM card is switched to the second network, the first SIM card notifies the network of the capability change, that is, the first SIM card initiates a detach process of the first network, and notifies the first network of the capability change of the first SIM card. The second SIM card initiates an attachment process to the second network, and informs the second network about the change of the capability of the second SIM card. Thereby completing the effective access of the second SIM card to the second network.

Fig. 10 is an interaction diagram of a 5G network handover procedure provided in an embodiment of the present application, which is detailed as follows:

in S1001, the first SIM card detects that the current network does not support the 5G standard.

The current network does not support the 5G standard, and the link parameter of the 5G standard of the current network may be smaller than a preset threshold. The quality of the connection between the first SIM card and the 5G network is degraded. At this time, the first SIM card resides in the 5G network, or the connection quality between the first SIM card and the 5G network is degraded.

In S1002, the second SIM card initiates detection.

When the second SIM card starts the automatic detection, the network message corresponding to the second network to be connected may be selected to be determined according to the difference of the second SIM card networks to which the second SIM card is connected.

In S1003, the first SIM card and the second SIM card perform 5G capability switching and user service switching.

And at the user terminal, setting the first SIM card not to support the 5G network, setting the second SIM card to support the 5G network, and switching the user service from the first SIM card to the second SIM card.

At S1004, the first SIM card informs of a network capability change.

The first SIM card may send a notification of the network capability change to a first network to which the first SIM card is connected, and a specific process may be as shown in fig. 11, where an interaction process of the first SIM card notifying the network capability change includes:

in step 1101, the first SIM card in the user equipment UE sends a detach request of a non-access stratum, NAS, message to the mobility management entity MME through the eNode B. When the user equipment is in ECM idle mode, i.e. the connection status of the NAS layer is idle mode, S1 connection is triggered by the detach request.

In step 1102, the mobility management entity MME sends a session deletion request to the Serving gateway Serving GW. And enabling an activated EPS (Evolved Packet System, Chinese called Evolved Packet System) on the Serving gateway Serving GW to bear and consider that the user equipment is in a deactivated state.

In step 1103, when the serving gateway receives a delete session request from the MME or SGSN (serving GPRS support node), the serving gateway deactivates the interrupt service routine ISR, releases the relevant EPS bearer context information, and sends a delete session response message to the mobility management entity MME.

In step 1104, if ISR is activated, the MME sends a detach notification message to the associated SGSN for notifying the SGSN that the user equipment is locally detached or completely detached from the predetermined network.

In step 1105, after the SGSN receives the completely detached message, the SGSN sends a message to delete the session request to the serving gateway S-GW each time the public data network PDN is connected to the serving gateway S-GW. If it is a local split, step 905-step 909 are passed.

In step 1106, if the ISR is in the activated state, the serving gateway S-GW deactivates the ISR. If the ISR is inactive and the serving gateway S-GW receives one or more delete session requests from the SGSN in step 902, the serving gateway S-GW sends a delete session request to the public data network gateway PDN GW.

In step 1107, the serving gateway S-GW acknowledges by deleting the bearer response message.

In step 1108, if PCRF is configured in the network, the PDN GW notifies PCRF to release EPS bearer through IP CAN session termination procedure.

In step 1109, the serving gateway S-GW acknowledges the delete session response message to the SGSN.

In step 1110, the SGSN sends a detach confirm message to the MME.

In step 1111, the MME sends a message granting the detach request to the user equipment UE according to the received detach confirm message;

in step 1112, after the UE receives the message agreeing to detach, the MME sends S1 a release command message to the eNodeB for releasing the signaling connection between the UE and the eNodeB.

In step 1113, after the MME receives the delete session request from the serving gateway S-GW, if the subscription data indicates that the user is allowed to perform a handover into a non-3 GPP access network, and the MME is configured to notify the home server HSS upon detach. The MME sends a notification request to the HSS.

In step 1114, the HSS deletes the dynamically stored access point name APN and public data network gateway PDN GW of the first SIM card, and sends a notification response to the MME. And finishing the detachment of the first SIM card and canceling the predetermined network.

And reporting that the first SIM card does not support the 5G capability in the attachment request by re-registering the current network.

In S1005, the second SIM card informs of the change of the network capability.

The second SIM card sends a notification of network capability change to the second network, re-registers the second network, and reports the support of the 5G capability, which may specifically be as shown in fig. 12, including:

in step 1201, the user equipment UE sends an Attach Request (referred to as Attach Request in all english) of the second SIM card to the mobility management entity MME.

The DCNR parameter carried by the ue sending the attach request, i.e. the identities of the Dual Connectivity evolved UMTS terrestrial radio access network and the new radio (collectively referred to as Dual Connectivity with NR) are 1.

In step 1202, the mobility management entity MME sends a location update request to a home server (HSS).

The HSS receives the location update request, updating the identity of the new radio NR as the secondary radio access technology RAT to 1.

In step 1203, the home server HSS sends a location update response to the mobility management entity MME, and carries an identifier 1 of a new radio NR as a secondary radio access technology (abbreviated as RAT).

In step 1204, the mobility management entity MME creates a session request and sends the create session request to the serving gateway control plane SGW-C. The session request carries an updating function selection indication mark as 1.

In step 1205, the serving gateway control plane SGW-C sends Sx interface creation request to the serving gateway user plane SGW-U.

In step 1206, the service gateway user SGW-U creates an Sx connection according to the request, and returns a response of the Sx interface creation request to the service gateway control plane SGW-C.

In step 1207, the serving gateway control plane SGW-C sends a session creation request to the data packet gateway control plane PGW-C, where the session creation request carries an update function selection indication identifier of 1.

In step 1208, the data packet gateway control plane PGW-C sends a session establishment request to the data packet gateway user plane PGW-U.

In step 1209, the data packet gateway user plane PGW-U returns a session establishment response to the data packet gateway control plane PGW-C.

In step 1210, the PGW-C returns a session creation response to the SGW-C according to the session establishment response.

In step 1211, the serving gateway control plane SGW-C sends an Sx interface session modification request to the serving gateway user plane SGW-U.

In step 1212, the serving gateway user plane SGW-U returns an Sx interface session modification response to the serving gateway control plane SGW-C.

In step 1213, the serving gateway control plane SGW-C sends a create session response to the mobility management entity MME.

In step 1214, the mobility management entity MME sends an initialization context installation request to the base station eNB and sends an attach grant message. The attach agreement message carries the identities of the evolved UMTS terrestrial radio access network and the new radio of the DCNR dual connectivity as 0.

In step 1215, the base station eNB transmits an initialization context installation response to the mobile management entity MME.

In step 1216, the user equipment sends a confirmation message of the second SIM card attachment completion to the base station eNB.

In step 1217, the base station eNB sends an attach complete acknowledgement message to the mobile management entity MME.

At this point, the attach procedure of the second SIM card registering the predetermined network (5G network) is completed.

Fig. 13 is a schematic block diagram of a network switching apparatus provided in the present application. The network switching apparatus includes:

a status information detecting unit 1301, configured to detect status information of the first SIM card residing in the first network;

a switching requirement determining unit 1302, configured to determine whether the second SIM card meets a preset network switching requirement according to network information of the second SIM card when the state information meets a preset condition;

the accessing unit 1303 is configured to access and reside the second SIM card in a second network when the network message of the second SIM card meets a preset network switching requirement.

The network switching apparatus according to the embodiment of the present application corresponds to the network switching method shown in fig. 4.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of this application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise. It should also be understood that in the embodiments of the present application, "one or more" means one, two, or more than two; "and/or" describes the association relationship of the associated objects, indicating that three relationships may exist; for example, a and/or B, may represent: a alone, both A and B, and B alone, where A, B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The network switching method provided by the embodiment of the application can be applied to user equipment such as a mobile phone, a tablet personal computer, a wearable device, a vehicle-mounted device, an Augmented Reality (AR)/Virtual Reality (VR) device, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a Personal Digital Assistant (PDA) and the like, and the embodiment of the application does not limit the specific type of the user equipment at all.

For example, the user equipment may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a vehicle-networking terminal, a computer, a laptop, a handheld communication device, a handheld computing device, a satellite radio device, a Wireless modem card, a Set Top Box (STB), a Customer Premises Equipment (CPE), and/or other devices for communicating over a Wireless system and a next generation communication system, such as a Mobile terminal in a 5G Network or a future-evolved Public Land Mobile Network (Public Mobile Network, PLMN) mobile terminals in the network, etc.

By way of example and not limitation, when the user device is a wearable device, the wearable device may also be a generic term for intelligently designing daily wear, developing wearable devices such as glasses, gloves, watches, clothing, shoes, and the like, applying wearable technology. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable intelligent device has the advantages that the generalized wearable intelligent device is complete in function and large in size, can realize complete or partial functions without depending on a smart phone, such as a smart watch or smart glasses, and only is concentrated on a certain application function, and needs to be matched with other devices such as the smart phone for use, such as various smart bracelets for monitoring physical signs, smart jewelry and the like.

Taking the user equipment as a mobile phone as an example, fig. 14 is a block diagram of a part of a structure of the mobile phone provided in the embodiment of the present application. Referring to fig. 14, the handset includes: radio Frequency (RF) circuitry 1410, memory 1420, processor 1430, and power supply 1440. Those skilled in the art will appreciate that the handset configuration shown in fig. 14 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile phone in detail with reference to fig. 14:

RF circuit 1410 may be used for receiving and transmitting signals during information transmission and reception or during a call, and in particular, may receive downlink information from a base station and then process the received downlink information to processor 1430; in addition, the data for designing uplink is transmitted to the base station. Typically, the RF circuitry includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuitry 1410 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE)), e-mail, Short Messaging Service (SMS), and the like.

The memory 1420 may be used to store software programs and modules, and the processor 1430 executes various functional applications and data processing of the mobile phone by operating the software programs and modules stored in the memory 1420. The memory 1420 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, memory 1420 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The processor 1430 is a control center of the mobile phone, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 1420 and calling data stored in the memory 1420, thereby integrally monitoring the mobile phone. Optionally, processor 1430 may include one or more processing units; preferably, the processor 1430 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 1430.

The handset also includes a power source 1440 (e.g., a battery) for powering the various components, which may preferably be logically connected to the processor 1430 via a power management system to manage charging, discharging, and power consumption via the power management system.

Although not shown, the mobile phone may further include an input unit, a display unit, a sensor, an audio circuit, a wireless fidelity (WiFi) module, a processor, a camera, a bluetooth module, and the like. Wherein:

the input unit may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone. Specifically, the input unit may include a touch panel and other input devices. The touch panel, also called a touch screen, may collect touch operations of a user (for example, operations of the user on or near the touch panel using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a preset program. Alternatively, the touch panel may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts it into touch point coordinates, and then provides the touch point coordinates to the processor 1430, and can receive and execute commands sent from the processor 1430. In addition, the touch panel may be implemented in various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The input unit may include other input devices in addition to the touch panel. In particular, other input devices may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit may be used to display information input by the user or information provided to the user and various menus of the mobile phone. The Display unit may include a Display panel, and optionally, the Display panel may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch panel may cover the display panel, and when the touch panel detects a touch operation thereon or nearby, the touch panel transmits the touch operation to the processor 1430 to determine the type of the touch event, and then the processor 1430 provides a corresponding visual output on the display panel according to the type of the touch event. Although in fig. 1, the touch panel and the display panel are two separate components to implement the input and output functions of the mobile phone, in some embodiments, the touch panel and the display panel may be integrated to implement the input and output functions of the mobile phone.

The handset may also include at least one sensor, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel according to the brightness of ambient light, and a proximity sensor that turns off the display panel and/or the backlight when the mobile phone is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

Audio circuitry, a speaker, and a microphone may provide an audio interface between the user and the handset. The audio circuit 160 may transmit the electrical signal converted from the received audio data to a speaker, and convert the electrical signal into a sound signal for output; on the other hand, the microphone converts the collected sound signal into an electrical signal, which is received by the audio circuit and converted into audio data, which is then processed by the audio data output processor 1430, and then transmitted to, for example, another cellular phone via the RF circuit 1410, or output to the memory 1420 for further processing.

WiFi belongs to short-distance wireless transmission technology, and the mobile phone can help a user to receive and send e-mails, browse webpages, access streaming media and the like through a WiFi module, and provides wireless broadband internet access for the user. Although fig. 1 shows a WiFi module, it is understood that it does not belong to the essential constitution of the handset, and can be omitted entirely as needed within the scope not changing the essence of the invention.

The handset may also include a camera. Optionally, the position of the camera on the mobile phone may be front-located or rear-located, which is not limited in this embodiment of the present application.

Optionally, the mobile phone may include a single camera, a dual camera, or a triple camera, which is not limited in this embodiment.

For example, a cell phone may include three cameras, one being a main camera, one being a wide camera, and one being a tele camera.

Optionally, when the mobile phone includes a plurality of cameras, all the cameras may be arranged in front of the mobile phone, or all the cameras may be arranged in back of the mobile phone, or a part of the cameras may be arranged in front of the mobile phone, and another part of the cameras may be arranged in back of the mobile phone, which is not limited in this embodiment of the present application.

Fig. 15 is a schematic software structure diagram of a mobile phone according to an embodiment of the present application. Taking a mobile phone operating system as an Android system as an example, in some embodiments, the Android system is divided into four layers, which are an application layer, an application Framework (FWK) layer, a system layer and a hardware abstraction layer, and the layers communicate with each other through a software interface.

As shown in fig. 15, the application layer may be a series of application packages, which may include short message, calendar, camera, video, navigation, gallery, call, and other applications.

The application framework layer provides an Application Programming Interface (API) and a programming framework for the application program of the application layer. The application framework layer may include some predefined functions, such as functions for receiving events sent by the application framework layer.

As shown in fig. 15, the application framework layer may include a window manager, a resource manager, and a notification manager, etc.

The window manager is used for managing window programs. The window manager can obtain the size of the display screen, judge whether a status bar exists, lock the screen, intercept the screen and the like. The content provider is used to store and retrieve data and make it accessible to applications. The data may include video, images, audio, calls made and received, browsing history and bookmarks, phone books, etc.

The resource manager provides various resources for the application, such as localized strings, icons, pictures, layout files, video files, and the like.

The notification manager enables the application to display notification information in the status bar, can be used to convey notification-type messages, can disappear automatically after a short dwell, and does not require user interaction. Such as a notification manager used to inform download completion, message alerts, etc. The notification manager may also be a notification that appears in the form of a chart or scroll bar text at the top status bar of the system, such as a notification of a background running application, or a notification that appears on the screen in the form of a dialog window. For example, prompting text information in the status bar, sounding a prompt tone, vibrating the user device, flashing an indicator light, etc.

The application framework layer may further include:

a viewing system that includes visual controls, such as controls to display text, controls to display pictures, and the like. The view system may be used to build applications. The display interface may be composed of one or more views. For example, the display interface including the short message notification icon may include a view for displaying text and a view for displaying pictures.

The telephone manager is used for providing the communication function of the mobile phone. Such as management of call status (including on, off, etc.).

The system layer may include a plurality of functional modules. For example: a sensor service module, a physical state identification module, a three-dimensional graphics processing library (such as OpenGL ES), and the like.

The sensor service module is used for monitoring sensor data uploaded by various sensors in a hardware layer and determining the physical state of the mobile phone;

the physical state recognition module is used for analyzing and recognizing user gestures, human faces and the like;

the three-dimensional graphic processing library is used for realizing three-dimensional graphic drawing, image rendering, synthesis, layer processing and the like.

The system layer may further include:

the surface manager is used to manage the display subsystem and provide fusion of 2D and 3D layers for multiple applications.

The media library supports a variety of commonly used audio, video format playback and recording, and still image files, among others. The media library may support a variety of audio-video encoding formats, such as MPEG4, h.264, MP3, AAC, AMR, JPG, PNG, and the like.

The hardware abstraction layer is a layer between hardware and software. The hardware abstraction layer may include a display driver, a camera driver, a sensor driver, etc. for driving the relevant hardware of the hardware layer, such as a display screen, a camera, a sensor, etc.

The embodiment of the application can be realized on a mobile phone with the hardware structure/software structure.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium and can implement the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include at least: any entity or device capable of carrying computer program code to a network switching device/user equipment, recording medium, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, and software distribution medium. Such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc. In certain jurisdictions, computer-readable media may not be an electrical carrier signal or a telecommunications signal in accordance with legislative and patent practice.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A network switching method is applied to user equipment, and the user equipment comprises a first SIM card and a second SIM card, and the method comprises the following steps:

detecting state information of a first SIM card when the first SIM card resides in a first network;

when the state information meets the preset condition, judging whether the second SIM card meets the preset network switching requirement or not through the network information of the second SIM card;

and when the network message of the second SIM card meets the preset network switching requirement, accessing and residing the second SIM card in a second network.

2. The method according to claim 1, wherein the status information includes link parameters of the user equipment residing in the first network through the first SIM card, and the status information meeting the preset condition includes:

and when the link parameter of the user equipment residing in the first network through the first SIM card is smaller than a preset threshold value, the state information meets a preset condition.

3. The method of claim 2, wherein accessing and residing the second SIM card in a second network comprises:

the user equipment initiates a flow that the first SIM card is detached from the first network;

and the user equipment initiates a process of attaching the second SIM card to the second network.

4. A method as claimed in claim 2 or 3, wherein the first network and the second network are networks of the same standard or of the same priority.

5. The method according to any of claims 1-4, wherein the operator to which the first network where the first SIM card resides is the same or different from the operator to which the second network to which the second SIM card accesses belongs.

6. The method of claim 1, wherein the status information comprises running information of an application program when the user equipment is resident in the first network through the first SIM card.

7. The method according to claim 6, wherein the running information of the application includes a type of the running application, and the status information satisfies a preset condition, including:

and when the type of the running application program is consistent with the preset application program type, the state information meets the preset condition.

8. The method according to claim 6, wherein the running information of the application includes a speed requirement or a stability requirement of data of the running application, and the state information satisfies a preset condition, including:

when the speed requirement of the data of the running application program is greater than a preset speed threshold value, the state information meets a preset condition;

or, when the stability requirement of the running application program is greater than a predetermined stability threshold, the state information satisfies a preset condition.

9. The method according to any one of claims 1 to 8, wherein when the status information satisfies a pre-condition, the two network formats are a network format higher than a format of a current network format of the first SIM card, or a network format with a higher priority than the current network format of the first SIM card.

10. The method according to any one of claims 1 to 9, wherein the second network is a 5G network, and determining whether the second SIM card meets a preset network handover requirement according to the network information of the second SIM card comprises:

when the 5G network is a non-independent networking NSA architecture, acquiring a network message through a second SIM card;

and analyzing the network message to obtain an indication message of a second network, and judging whether the second SIM card is allowed to access the second network according to the indication message.

11. The method of claim 10, wherein the network message is a system message SIB 2.

12. The method of claim 10, wherein when the network message does not include an indication message of a second network, the method further comprises:

acquiring a cell to which the position of user equipment belongs;

and determining whether the second SIM card allows to access the second network according to the pre-recorded corresponding relation between the cell and the second network.

13. The method of claim 10, wherein when the network message does not include an indication message of a pre-second network, the method further comprises:

acquiring a public land mobile network to which the position of the user equipment belongs;

and determining whether the second SIM card allows to access the second network according to the pre-recorded corresponding relation between the public land mobile network and the second network.

14. A network switching apparatus, wherein the network switching apparatus is applied to a user equipment, and the user equipment includes a first SIM card and a second SIM card, the apparatus comprising:

the state information detection unit is used for detecting the state information of the first SIM card when the first SIM card resides in the first network;

the switching requirement judging unit is used for judging whether the second SIM card meets the preset network switching requirement or not through the network information of the second SIM card when the state information meets the preset condition;

and the access unit is used for accessing and residing the second SIM card in a second network when the network message of the second SIM card meets the preset network switching requirement.

15. A user equipment comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program, causes the user equipment to carry out the method according to any one of claims 1 to 13.

16. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 13.