CN113596810A

CN113596810A - Network system switching method based on double cards and terminal equipment

Info

Publication number: CN113596810A
Application number: CN202010364855.8A
Authority: CN
Inventors: 汪峰; 王鑫; 康婷
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-11-02
Anticipated expiration: 2040-04-30
Also published as: CN113596810B; WO2021218494A1

Abstract

The application provides a network system switching method based on double cards and terminal equipment, which are applicable to the technical field of mobile communication and applied to the terminal equipment, wherein the terminal equipment comprises a main card slot and an auxiliary card slot, and the method comprises the following steps: acquiring a first network standard where a master user identification card resides in real time and a second network standard which is supported by a master card slot at the highest level; if the version of the first network system is lower than that of the second network system, network searching is carried out by using a network searching module corresponding to the auxiliary card slot; and screening out the system with the highest version from all the systems obtained by network search, and switching the network system where the master user identification card resides in real time to the system with the highest version. The embodiment of the application can quickly improve the network system version of the main card, and has little influence on the main card service.

Description

Network system switching method based on double cards and terminal equipment

Technical Field

The application belongs to the technical field of mobile communication, and particularly relates to a network system switching method based on double cards and terminal equipment.

Background

A dual card terminal (hereinafter referred to as a terminal) is provided with two card slots for placing two different Subscriber Identity Modules (SIM) cards. One of the two card slots is a main card slot, and the other card slot is an auxiliary card slot. The SIM card inserted into the main card slot is a main SIM card (hereinafter referred to as main card), and the SIM card inserted into the auxiliary card slot is an auxiliary SIM card (hereinafter referred to as auxiliary card). Generally, the main card provides a call service and a data service, and the sub-card is mainly used for providing a call service.

In practical applications, versions of network standards (hereinafter referred to as standards) supported by the master card slot are often comprehensive, and for example, 2G, 3G, 4G, and 5G may be simultaneously supported. After the terminal equipment is operated in a starting or closing flight mode and the like, network search of the SIM card can be automatically carried out, and the main card is registered in an available network. However, due to the network searching strategy of the terminal device and other problems, the situation that the version of the host card resident system is lower than the actual resident higher system often occurs. For example, when the actual residency modes of the master card are 3G, 4G and 5G, the actual residency mode of the master card may be 3G. At this time, the user can only use the network with the lower standard version to perform the data service, so that the data service capability of the terminal device is reduced, and the user experience is reduced.

In order to make the master card reside in a network with a higher system, the traditional method can automatically search the master card network and select the system again after the master card changes the cell information. The network searching process is long, and the main card cannot use the service in the network searching process. Therefore, on one hand, normal use of the main card service is affected, and on the other hand, it still cannot be guaranteed that the main card can reside in a high-version system network.

Disclosure of Invention

In view of this, the embodiment of the present application provides a network standard switching method based on dual cards and a terminal device, which can solve the problem that it is difficult to make a master card reside in a high-version standard network in the prior art, so that the service processing capability of the terminal device is low.

A first aspect of an embodiment of the present application provides a network standard switching method based on dual cards, which is applied to a terminal device, where the terminal device includes a primary card slot and a secondary card slot, and the method includes:

acquiring a first network standard where a master user identification card resides in real time and a second network standard which is supported by the master card slot at the highest level;

if the version of the first network system is lower than the version of the second network system, using a network searching module corresponding to the secondary card slot to perform network searching;

and screening out the system with the highest version from all the systems obtained by the network search, and switching the network system where the master user identification card resides in real time to the system with the highest version.

In the embodiment of the application, network searching is performed through the network searching module corresponding to the auxiliary card slot, and system switching and promotion of the main card are performed according to the searched system. For the master card, the network standard version can be promoted only by performing standard switching according to the search result without performing complex network searching operation. Therefore, the influence on the normal service use of the main card is extremely small.

In a first possible implementation manner of the first aspect, the operation of network search and system screening switching includes:

network searching is carried out by using a network searching module corresponding to the auxiliary card slot, and at least one first cell network and a third network standard supported by each first cell network are obtained;

if the third network system has a system with a version higher than that of the first network system, screening out a target network system with the highest version in the third network system, and acquiring first cell information of the first cell network to which the target network system belongs;

and performing network registration on the master user identification card based on the first cell information so as to enable the master user identification card to reside in the target network standard.

On one hand, the target system is the highest system in the search results and is higher than the real-time resident system of the main card, so that the resident system of the main card can be improved. And the actual resident system version of the main card can reach the highest version which is actually available as much as possible. Thereby enabling the terminal device to have a strong data service capability. On the other hand, in the embodiment of the present application, the network searching module corresponding to the secondary card slot performs the network searching operation, and after determining the appropriate cell network, the cell network information is shared to the primary card. For the main card, network registration is only needed according to the cell network information, and complex network searching operation is not needed. Therefore, the influence on the normal service use of the main card is extremely small.

In a second possible implementation manner of the first aspect, before the performing network search by using the network searching module corresponding to the secondary card slot, the method further includes:

acquiring the number of user identification cards in the terminal equipment;

correspondingly, if the version of the first network system is lower than the version of the second network system, performing network search by using the network searching module corresponding to the secondary card slot, including:

and if the number is 1 and the version of the first network system is lower than that of the second network system, using the network searching module corresponding to the secondary card slot to perform network search.

When only one SIM card exists and the network standard version does not reach the highest version supported by the main card slot, the main card of the terminal equipment can also reside in a higher version standard theoretically. At the moment, the network searching module corresponding to the auxiliary card slot is used for network searching, so that the influence on the normal service of the main card can be prevented.

In a third possible implementation manner of the first aspect, before the performing network search by using the network searching module corresponding to the secondary card slot, the method further includes:

acquiring the number of user identification cards in the terminal equipment;

if the number is 2 and the version of the first network standard is lower than that of the second network standard, acquiring a fourth network standard where a secondary user identification card resides in real time, a first operator to which the primary user identification card belongs and a second operator to which the secondary user identification card belongs;

and if the first operator is the same as the second operator and the version of the fourth network standard is lower than the version of the second network standard, using the network searching module corresponding to the secondary card slot to perform network search.

When there are two SIM cards and the master card network format version does not reach the highest version supported by the master card slot, it indicates that the terminal device master card can also reside in a higher version format theoretically. When the operators of the main card and the auxiliary card are the same, and the currently resident standard version of the auxiliary card is lower than the highest version supported by the main card slot, no matter whether the currently resident standard version of the auxiliary card is higher than the currently resident standard version of the main card, the auxiliary card cannot be accessed to the cell network in real time to upgrade the standard version of the main card to the highest version. Therefore, in the embodiment of the application, the network searching module corresponding to the secondary card slot is used for network searching without managing the height of the system version where the secondary card currently resides and the system version where the main card currently resides, so as to furthest promote the resident system version of the main card.

On the basis of the third possibility, in a fourth possible implementation manner of the first aspect, the method further includes:

if the first operator is the same as the second operator and the version of the fourth network standard is the same as that of the second network standard, acquiring second cell information of a second cell network accessed by the secondary user identification card in real time;

and performing network registration on the master user identification card based on the second cell information so that the user identification card resides in the fourth network system.

When the operators of the main card and the auxiliary card are the same and the current resident system version of the auxiliary card is equal to the highest version supported by the main card, the highest system version of the main card can only be promoted to the current resident system version of the auxiliary card. Therefore, at this time, the embodiment of the present application may obtain the cell information of the cell network to which the secondary card is accessed in real time, and share the cell information to the primary card, so that the primary card may quickly register in the cell network. Thereby quickly raising the standard version to the highest.

On the basis of the third possibility, in a fifth possible implementation manner of the first aspect, the method further includes:

and if the first operator is different from the second operator, using the network searching module corresponding to the secondary card slot to perform network search.

When the operators of the main card and the auxiliary card are different, the main card cannot register and access the cell network accessed by the auxiliary card in real time. Namely, the reference significance is lost no matter what the current system version of the secondary card is. Therefore, in the embodiment of the application, the network searching module corresponding to the secondary card slot is used for network searching at this time, so as to furthest promote the resident version of the primary card.

In a sixth possible implementation manner of the first aspect, before acquiring a first network standard in which a master user identification card resides in real time and a second network standard that is supported by the master card slot at the highest level, the method further includes:

and if the preset trigger condition is detected, executing the operation of acquiring the first network standard where the master user identification card resides in real time and the second network standard which is supported by the master card slot at the highest.

Wherein, the triggering condition may be: the method comprises the steps that a user starts any one or more of a system lifting function, information of a main card cell changes, the signal quality of the main card is lower than a preset threshold value, the main card has system fallback and voice service is finished in the voice service process, timing triggering is carried out, and a triggering instruction is received. For different actual scenes, one or more different trigger conditions may be set to meet the requirements of the actual scenes. For example, when the system fallback identification is included, the system of the master card can be quickly upgraded when the system fallback occurs. For example, all the trigger conditions corresponding to the above 6 scenarios may be set as the trigger conditions in the embodiment of the present application. At this moment, the embodiment of the application can at least meet the actual requirements of the scenes in the 6, so that the main card system versions in different scenes are quickly promoted, the requirements of different scenes are compatibly processed, and the compatibility is stronger.

In a seventh possible implementation manner of the first aspect, the terminal device is a dual-card dual-standby single-pass device, and performing network search by using the network searching module corresponding to the secondary card slot includes:

and acquiring the service state of the primary user identification card, and if the service state is in an idle state, using a network searching module corresponding to the secondary card slot to perform network search.

And the network search is carried out only when the main card does not carry out data service or voice service. At this time, the user can normally use the main card service without sensing the system search of the main card in the embodiment of the application.

In an eighth possible implementation manner of the first aspect, the network registering the primary user identification card based on the first cell information includes:

and acquiring the service state of the master user identification card, and if the service state is in an idle state, performing network registration on the master user identification card based on the first cell information.

When the main card does not carry out data service or voice service, the cell switching and network registration are carried out. At this time, the user can normally use the main card service without sensing the system switching of the main card in the embodiment of the application.

A second aspect of the embodiments of the present application provides a network standard switching method based on dual cards, which is applied to a terminal device, where the terminal device includes two card slots, and the method includes:

detecting the subscriber identity module cards inserted into the two card slots;

if only one subscriber identity module card is inserted into the two card slots, acquiring a fifth network format in which the inserted subscriber identity module card resides in real time and a sixth network format which is supported by the highest card slot to which the inserted subscriber identity module card belongs;

if the version of the fifth network system is lower than that of the sixth network system, using a network searching module corresponding to a card slot, into which a subscriber identity module card is not inserted, of the two card slots to perform network search;

and screening out the system with the highest version from all the systems obtained by the network search, and switching the network system where the inserted subscriber identity module card resides in real time to the system with the highest version.

In the embodiment of the application, network searching is performed through the network searching module corresponding to the card slot in which the subscriber identity module card is not inserted, and the system switching promotion of the main card is performed according to the system obtained through searching. For the inserted subscriber identity module card, the network system version can be promoted only by performing system switching according to the search result without performing complex network searching operation. Therefore, the influence on the normal service of the inserted subscriber identification card is extremely small.

In a first possible implementation manner of the second aspect, the network searching and system screening switching operation includes: network searching is carried out by using a network searching module corresponding to a card slot which is not inserted with a user identification card in the two card slots, so as to obtain at least one third cell network and a seventh network standard supported by each third cell network;

if the seventh network system has a system with a version higher than that of the fifth network system, screening out a first target system with the highest version in the seventh network system, and acquiring third cell information of a third cell network to which the first target system belongs;

and performing network registration on the inserted subscriber identity card based on the third cell information so as to enable the inserted subscriber identity card to reside in the first target system.

On one hand, the first target system is the highest system in the search results and is higher than the inserted user identification card real-time resident system, so that the inserted user identification card resident system can be improved. And the inserted subscriber identity module card can be made to actually reside in the system version as far as possible to reach the actually available highest version. Thereby enabling the terminal device to have a strong data service capability. On the other hand, in the embodiment of the present application, the network searching module corresponding to the card slot into which the subscriber identity module card is not inserted performs the network searching operation, and after determining the appropriate cell network, the cell network information is shared to the inserted subscriber identity module card. For the inserted subscriber identity module card, network registration is only needed according to the cell network information, and complex network searching operation is not needed. Therefore, the influence on the normal service of the inserted subscriber identification card is extremely small.

A third aspect of the embodiments of the present application provides a network standard switching method based on dual cards, which is applied to a terminal device, where the terminal device includes two card slots, and the method includes:

if the subscriber identity module cards are inserted into the two card slots, and the network system versions where the two subscriber identity module cards reside in real time are lower than the network system version which is supported by the highest card slot of the two subscriber identity module cards, acquiring the service states of the two subscriber identity module cards;

if a first target card with a service state being a connection state and a second target card with a service state being an idle state exist in the two subscriber identification cards, network searching is carried out by using a network searching module corresponding to a card slot to which the second target card belongs;

and screening out the system with the highest version from all the systems obtained by the network search, and switching the network system where the first target card resides in real time to the system with the highest version.

In the embodiment of the application, when both cards need to be standard-upgraded, the idle card slot is preferentially utilized to assist the connected card to upgrade the standard, so that normal use of the terminal device is guaranteed as much as possible.

In a first possible implementation manner of the third aspect, a network standard that is supported by the first target card at the highest in the card slot is taken as a ninth network standard, and a network standard in which the second target card resides in real time is taken as a tenth network standard;

before the network searching is performed by using the network searching module corresponding to the card slot to which the second target card belongs, the method further includes:

acquiring a third operator of the first target card and a fourth operator of the second target card;

if the third operator and the fourth operator are the same and the version of the tenth network standard is lower than the version of the ninth network standard, executing the network searching operation by using the network searching module corresponding to the card slot to which the second target card belongs; or

And if the third operator is different from the fourth operator, executing the operation of performing network search by using the network searching module corresponding to the card slot to which the second target card belongs.

When the operators of the two SIM cards are the same, and the currently resident standard version of the idle SIM card is lower than the highest version supported by the connected SIM card, no matter whether the currently resident standard version of the idle SIM card is higher than the currently resident standard version of the connected SIM card (i.e. the eighth network standard), the connected SIM card cannot be upgraded to the highest standard version by accessing the idle SIM card to the cell network in real time. And when the operators of the two SIM cards are different, the connected SIM card cannot be registered to access the cell network accessed by the idle SIM card in real time. Namely, the reference significance is lost no matter what the current system version of the idle state SIM card is. Therefore, when the currently-resident format version of the idle-state SIM card is lower than the highest version supported by the card slot of the connected-state SIM card and when the operators are different, the network searching module corresponding to the card slot of the idle-state SIM card is used for network searching instead of managing the heights of the currently-resident format version of the idle-state SIM card and the currently-resident format version of the connected-state SIM card, so as to improve the resident format version of the connected-state SIM card to the maximum extent.

In a second possible implementation manner of the third aspect, if the third operator and the fourth operator are the same, and the tenth network standard is the same as the ninth network standard version, fourth cell information of a fourth cell network to which the second target card is accessed in real time is acquired, and network registration is performed on the first target card based on the fourth cell information, so that the first target card resides in the tenth network standard.

When the operators of the two SIM cards are the same and the currently resident standard version of the idle SIM card is equal to the highest version supported by the connected SIM card, it is indicated that the connected SIM card is the highest and can only upgrade the standard version to the currently resident standard version of the idle SIM card. Therefore, at this time, the embodiment of the present application may obtain the cell information of the cell network to which the idle SIM card is accessed in real time, and share the cell information to the connected SIM card, so that the connected SIM card may be quickly registered in the cell network. Thereby quickly raising the standard version to the highest.

A fourth aspect of the embodiments of the present application provides a network standard switching method based on dual cards, which is applied to a terminal device, where the terminal device includes two card slots, and the method includes:

if the two card slots are inserted with user identification cards, and a third target card with the version of the eleventh network system residing in real time and lower than the version of the twelfth network system supported by the highest card slot of the user identification cards and a fourth target card with the version of the thirteenth network system residing in real time and the version of the fourteenth network system supported by the highest card slot of the user identification cards exist in the two user identification cards, the version heights of the twelfth network system and the version heights of the fourteenth network system are compared;

if the version of the twelfth network system is higher than that of the fourteenth network system, network searching is performed by using a network searching module corresponding to a card slot to which a fourth target card belongs;

and screening out the system with the highest version from all the systems obtained by the network search, and switching the network system where the third target card resides in real time to the system with the highest version.

At this time, it is stated that by performing system version upgrading on the third target card, the service processing capability of the terminal device may be further improved. Therefore, the network searching module corresponding to the card slot to which the fourth target card belongs carries out network searching, and then carries out corresponding system screening and switches the system of the third target card. So as to promote the standard version of the third target card.

In a first possible implementation manner of the fourth aspect, if the versions of the twelfth network system and the fourteenth network system are the same, the operators to which the two subscriber identity cards belong are identified;

and if the operators of the two subscriber identity cards are the same, performing network registration on the third target card by using the sixth cell information of the sixth cell network accessed by the fourth target card in real time, so that the third target card resides in the fourteenth network system.

At this time, it is indicated that the third target card can only upgrade the system version to the system version in which the fourth target card currently resides. Therefore, at this time, the embodiment of the present application may obtain the cell information of the cell network to which the fourth target card is accessed in real time, and share the cell information with the third target card, so that the third target card may be quickly registered in the cell network. Thereby quickly raising the standard version to the highest.

On the basis of the embodiments of the second aspect, the third aspect, and the fourth aspect, as an embodiment of the present application, before the detecting the subscriber identity cards inserted into the two card slots, the method further includes:

and if the preset trigger condition is detected, executing the operation of detecting the user identification cards inserted into the two card slots.

A fifth aspect of the embodiments of the present application provides a terminal device, where the terminal device includes a memory and a processor, where the memory stores a computer program that is executable on the processor, and when the processor executes the computer program, the terminal device implements the steps of the method for switching network standards based on dual cards according to any one of the first aspect, the second aspect, the third aspect, or the fourth aspect.

A sixth aspect of embodiments of the present application provides a computer-readable storage medium, comprising: a computer program is stored, which, when executed by a processor, causes a terminal device to implement the steps of the dual-card based network system switching method according to any one of the first, second, third or fourth aspects.

A seventh aspect of the embodiments of the present application provides a computer program product, which, when running on a terminal device, causes the terminal device to execute the method for switching a network standard based on a dual card according to any one of the first aspect, the second aspect, the third aspect, or the fourth aspect.

An eighth aspect of the embodiment of the present application provides a chip system, where the chip system includes a memory and a processor, and the processor executes a computer program stored in the memory to implement the network standard switching method based on a dual card according to any one of the first aspect, the second aspect, the third aspect, or the fourth aspect.

It is understood that the beneficial effects of the fifth aspect to the eighth aspect can be referred to the related description of the first aspect, and are not described herein again.

Drawings

Fig. 1A is a schematic structural diagram of a mobile phone according to an embodiment of the present application;

fig. 1B is a block diagram of a software structure of a terminal device according to an embodiment of the present application;

fig. 2 is a schematic flowchart of a network system switching method based on dual cards according to an embodiment of the present application;

fig. 3A is a schematic flowchart of a network system switching method based on dual cards according to an embodiment of the present application;

fig. 3B is a schematic flowchart of a network system switching method based on dual cards according to an embodiment of the present application;

fig. 3C is a schematic flowchart of a network system switching method based on dual cards according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a terminal device 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, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

Some terms that may be referred to in the embodiments of the present application are first explained as follows:

a cell: refers to the area covered by one or a part of a base station (sector antenna) in a cellular mobile communication system, in which a mobile station can reliably communicate with the base station via a radio channel. The specific division rule of the cell and the range size of the cell are not limited herein, and may be determined according to the actual application scenario. For example, a Cell may be a minimum signal coverage range unique to a Public Land Mobile Network (PLMN), a frequency point, and a Physical Cell Identifier (PCI).

Version of network system: in the embodiment of the present application, the specific version algebra of the network system is referred to. Because the network system is named according to the appearance time sequence, for example, 1G is a first generation mobile communication system, 2G is a second generation mobile communication system, 3G is a third generation mobile communication system, 4G is a fourth generation mobile communication technology, and 5G is a fifth generation mobile communication technology. Therefore, in the embodiment of the present application, the version of the 1G standard is the first generation version, the version of the 2G standard is the second generation version, and so on. Since the higher the version, the more data transmission capability. Therefore, the data service and voice service capability of the terminal equipment can be improved by residing the SIM card to a higher version system.

SIM card: in the embodiment of the application, the actual type of the SIM card needs to be determined according to the actual application scenario. For example, the SIM card may be any one or more of a conventional SIM card, a Universal Subscriber Identity Module (USIM) card, an Embedded Subscriber Identity Module (eSIM) card, and a virtual Subscriber Identity card. On this basis, in the embodiment of the present application, whether to insert the SIM card is determined according to whether there is an available SIM card in the terminal device. If the SIM card is available in the terminal equipment, the SIM card is inserted. If the SIM card is an eSIM card or a virtual subscriber identity module card, the enabled eSIM card or virtual subscriber identity module card is regarded as an inserted card.

A clamping groove: for the case of a conventional solid card, such as a SIM card or a USIM card, and the card insertion is required, the card slot refers to a physical card slot for placing the SIM card. For non-physical cards such as eSIM cards and virtual subscriber identity cards, the card slot is also a virtual concept at this time because it does not require a physical card slot. I.e. the hardware used for placing the SIM card, or the hardware integrated with the SIM card.

Searching a network module: the card slot is a general name of hardware which is needed to be used for network searching and corresponds to the card slot. Generally, the terminal device comprises hardware such as a baseband, a radio frequency unit, a memory and the like, which can be determined according to the actual terminal device condition. Since the common terminal devices include: the dual-card dual-standby dual-channel and dual-card dual-standby single-channel are adopted. In the terminal equipment with dual cards and dual standby functions, each card slot is provided with a set of independent hardware for network search and data service. For the dual-card dual-standby single-pass terminal equipment, the two card slots share the baseband and the radio frequency unit. Therefore, hardware may be shared by the network searching modules corresponding to the two card slots. The method can be determined according to the actual terminal equipment condition.

In the prior art, due to different network search strategies of the terminal device, even if some cell networks supporting a higher standard exist around the terminal device, the situation that the version of the main card resident standard is lower than the highest standard version that the main card resident standard can actually reside often occurs. At this time, the user can only use the network with the lower standard version to perform the data service, so that the data service capability of the terminal device is reduced, and the user experience is reduced.

For example, assume that in terminal device a, the format versions supported by the master card slot include 2G, 3G, 4G, and 5G. Meanwhile, it is assumed that the master card slot network searching module can search a cell network a, a cell network b, a cell network c and a cell network d, and all the four cell networks are operator networks of the master card. The cell network a supports 3G, the cell network b supports 4G, the cell network c is a cell network with a Non-Stand Alone Network (NSA) architecture, supports 4G and 5G, and the cell network d is a cell network with a Stand Alone network (SA) architecture, and supports 5G. On the basis, when frequency point selection and cell network registration are carried out according to a historical frequency point search strategy, a signal energy sequencing strategy and the like, a main card may be caused to reside on a lower version system, and therefore a 5G system network cannot be used for carrying out data service. For example, may reside in 3G or 4G formats.

In order to deal with the problem, the conventional method is to automatically search the network of the main card and re-select the system after the main card switches the cell network. Thereby realizing mobility residing to a high-standard network. The network searching process is long, and the main card cannot use the service in the network searching process. Thus, there are at least the following problems:

1. the system of the main card can be updated only when the cell information of the main card is switched, so that the main card can stay in the low-system network for a long time. 2. When network searching is carried out again, the problems of the original network searching strategy and the like still exist, so that the system which is resident again is possibly low, namely, the master card can not be ensured to be resident in the high-version system network. 3. The network search of the main card can cause that the user can not use the service of the main card, thereby causing great influence on the normal use of the terminal equipment.

The method and the device aim to improve the resident system version of the main card and reduce the influence on the normal use of the data service and the conversation service of the terminal equipment. In the embodiment of the present application, it is first identified whether the standard in which the host card actually resides is the highest supported standard. If not, the main card resident system is explained to have a lifting space. At this time, in the embodiment of the present application, network searching is performed by using the network searching module corresponding to the secondary card slot, so as to obtain some cell networks that can be currently accessed by the terminal device, and systems that are respectively supported by each cell network. When a system with a version higher than that of a system resident in the master card in real time exists in the search result, the embodiment of the present application will take the system with the highest version in the search result as a system for target improvement, and will share cell network information of a cell network to which the system with the highest version belongs to the master card. Therefore, the main card can perform network registration according to the cell network information, access the corresponding cell network and reside in the corresponding target system.

On one hand, the target system is the highest system in the search results and is higher than the real-time resident system of the main card, so that the resident system of the main card can be improved. And the actual resident system version of the main card can reach the highest version which is actually available as much as possible. Thereby enabling the terminal device to have a strong data service capability. On the other hand, in the embodiment of the present application, the network searching module corresponding to the secondary card slot performs the network searching operation, and after determining the appropriate cell network, the cell network information is shared to the primary card. For the main card, network registration is only needed according to the cell network information, and complex network searching operation is not needed. Therefore, the influence on the normal service use of the main card is extremely small. In addition, the network searching module corresponding to the auxiliary card slot can be actively used for searching the network, and the system of the main card is improved. Therefore, by setting a suitable trigger time, the master card can be actively resided to the high-version system in time, and the time in the low-version system network can be further shortened.

The network system switching method based on the dual cards provided by the embodiment of the application can be applied to terminal equipment supporting dual card standby, and at the moment, the terminal equipment is an execution main body of the network system switching method based on the dual cards provided by the embodiment of the application. The specific device type of the terminal device is not limited herein, and may be determined according to actual situations, for example, the terminal device may be a mobile phone, a tablet computer, a wearable device, and the like.

Hereinafter, taking the terminal device as a mobile phone as an example, fig. 1A shows a schematic structural diagram of the mobile phone 100.

The handset 100 may include a processor 110, an external memory interface 120, an internal memory 121, a Universal Serial Bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a key 190, a motor 191, an indicator 192, a camera 193, a display screen 194, a SIM card interface 195, and the like. The sensor module 180 may include a gyroscope sensor 180A, an acceleration sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an ambient light sensor 180E, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, and a touch sensor 180K (of course, the mobile phone 100 may further include other sensors, such as a temperature sensor, a pressure sensor, a distance sensor, an air pressure sensor, a bone conduction sensor, and the like, which are not shown in the figure).

It is to be understood that the illustrated structure of the embodiment of the present invention does not specifically limit the mobile phone 100. In other embodiments of the present application, the handset 100 may include more or fewer components than shown, or some components may be combined, some components may be separated, or a different arrangement of components may be used. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 110 may include one or more processing units, such as: the processor 110 may include an Application Processor (AP), a modem processor, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a controller, a memory, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a Neural-Network Processing Unit (NPU), etc. The different processing units may be separate devices or may be integrated into one or more processors. The controller may be a neural center and a command center of the cell phone 100, among others. The controller can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetching and instruction execution.

A memory may also be provided in processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that have just been used or recycled by the processor 110. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. Avoiding repeated accesses reduces the latency of the processor 110, thereby increasing the efficiency of the system.

The processor 110 may operate the network system switching method based on the dual cards provided in the embodiment of the present application, so as to implement the switching version promotion of the network system. The processor 110 may include different devices, such as an integrated CPU and GPU.

The display screen 194 is used to display images, video, and the like. The display screen 194 includes a display panel. The display panel may adopt a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED), a flexible light-emitting diode (FLED), a miniature, a Micro-oeld, a quantum dot light-emitting diode (QLED), and the like. In some embodiments, the cell phone 100 may include 1 or N display screens 194, with N being a positive integer greater than 1. The display screen 194 may be used to display information input by or provided to the user as well as various Graphical User Interfaces (GUIs). For example, the display 194 may display a photograph, video, web page, or file, etc. As another example, display 194 may display a graphical user interface. Wherein the graphical user interface includes a status bar, a concealable navigation bar, a time and weather widget, and an icon of an application, such as a browser icon. The status bar includes the name of the operator (e.g., china mobile), the mobile network (e.g., 4G), the time and the remaining power. The navigation bar includes a back key icon, a home key icon, and a forward key icon. Further, it is understood that in some embodiments, a Bluetooth icon, a Wi-Fi icon, an add-on icon, etc. may also be included in the status bar. It will also be appreciated that in other embodiments, a Dock bar may also be included in the graphical user interface, and that a commonly used application icon may be included in the Dock bar, etc. When the processor detects a touch event of a finger (or stylus, etc.) of a user with respect to an application icon, in response to the touch event, the user interface of the application corresponding to the application icon is opened and displayed on the display 194.

In this embodiment, the display screen 194 may be an integrated flexible display screen, or may be a spliced display screen formed by two rigid screens and a flexible screen located between the two rigid screens. After the processor 110 runs the network system switching method based on the dual card provided by the embodiment of the present application, the processor 110 may control an external audio output device to switch an output audio signal.

The cameras 193 (front camera or rear camera, or one camera may be both front camera and rear camera) are used to capture still images or video. In general, the camera 193 may include a photosensitive element such as a lens group including a plurality of lenses (convex lenses or concave lenses) for collecting an optical signal reflected by an object to be photographed and transferring the collected optical signal to an image sensor, and an image sensor. And the image sensor generates an original image of the object to be shot according to the optical signal.

The internal memory 121 may be used to store computer-executable program code, which includes instructions. The processor 110 executes various functional applications of the cellular phone 100 and data processing by executing instructions stored in the internal memory 121. The internal memory 121 may include a program storage area and a data storage area. Wherein the storage program area may store an operating system, codes of application programs (such as a camera application, a WeChat application, etc.), and the like. The data storage area can store data created during the use of the mobile phone 100 (such as images, videos and the like acquired by a camera application), and the like.

The internal memory 121 may further store one or more computer programs 1210 corresponding to the network system switching method based on the dual card provided in the embodiment of the present application. The one or more computer programs 1210 are stored in the memory 121 and configured to be executed by the one or more processors 110, the one or more computer programs 1210 including instructions that can be used to perform the steps as in the embodiments of fig. 2-3C, the computer program 1210 may include an account number verification module 1211, a priority comparison module 1212. The account verification module 1211 is configured to authenticate system authentication accounts of other terminal devices in the local area network; the priority comparison module 1212 may be configured to compare the priority of the audio output request service with the priority of the current output service of the audio output device. The state synchronization module 1213 may be configured to synchronize the device state of the audio output device currently accessed by the terminal device to another terminal device, or synchronize the device state of the audio output device currently accessed by another device to the local. When the code of the network system switching method based on the dual card stored in the internal memory 121 is executed by the processor 110, the processor 110 may control the terminal device to perform system version and cell information processing.

In addition, the internal memory 121 may include a high-speed random access memory, and may further include a nonvolatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (UFS), and the like.

Of course, the code of the network system switching method based on the dual cards provided in the embodiment of the present application may also be stored in the external memory. In this case, the processor 110 may run the code of the dual card-based network format switching method stored in the external memory through the external memory interface 120, and the processor 110 may control the terminal device to perform format version and cell information processing.

The function of the sensor module 180 is described below.

The gyro sensor 180A may be used to determine the motion attitude of the cellular phone 100. In some embodiments, the angular velocity of the handpiece 100 about three axes (i.e., the x, y, and z axes) may be determined by the gyro sensor 180A. I.e., the gyro sensor 180A may be used to detect the current state of motion of the handset 100, such as shaking or standing still.

When the display screen in the embodiment of the present application is a foldable screen, the gyro sensor 180A may be used to detect a folding or unfolding operation acting on the display screen 194. The gyro sensor 180A may report the detected folding operation or unfolding operation as an event to the processor 110 to determine the folded state or unfolded state of the display screen 194.

The acceleration sensor 180B can detect the magnitude of acceleration of the cellular phone 100 in various directions (typically three axes). I.e., the gyro sensor 180A may be used to detect the current state of motion of the handset 100, such as shaking or standing still. When the display screen in the embodiment of the present application is a foldable screen, the acceleration sensor 180B may be used to detect a folding or unfolding operation acting on the display screen 194. The acceleration sensor 180B may report the detected folding operation or unfolding operation as an event to the processor 110 to determine the folded state or unfolded state of the display screen 194.

The proximity light sensor 180G may include, for example, a Light Emitting Diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The mobile phone emits infrared light outwards through the light emitting diode. The handset uses a photodiode to detect infrared reflected light from nearby objects. When sufficient reflected light is detected, it can be determined that there is an object near the handset. When insufficient reflected light is detected, the handset can determine that there are no objects near the handset. When the display screen in this embodiment of the application is a foldable screen, the proximity optical sensor 180G may be disposed on the first screen of the foldable display screen 194, and the proximity optical sensor 180G may detect a folding angle or an unfolding angle of the first screen and the second screen according to an optical path difference of the infrared signal.

The gyro sensor 180A (or the acceleration sensor 180B) may transmit the detected motion state information (such as an angular velocity) to the processor 110. The processor 110 determines whether the mobile phone is currently in the hand-held state or the tripod state (for example, when the angular velocity is not 0, it indicates that the mobile phone 100 is in the hand-held state) based on the motion state information.

The fingerprint sensor 180H is used to collect a fingerprint. The mobile phone 100 can utilize the collected fingerprint characteristics to unlock the fingerprint, access the application lock, take a photograph of the fingerprint, answer an incoming call with the fingerprint, and the like.

The touch sensor 180K is also referred to as a "touch panel". The touch sensor 180K may be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, which is also called a "touch screen". The touch sensor 180K is used to detect a touch operation applied thereto or nearby. The touch sensor can communicate the detected touch operation to the application processor to determine the touch event type. Visual output associated with the touch operation may be provided through the display screen 194. In other embodiments, the touch sensor 180K may be disposed on the surface of the mobile phone 100, different from the position of the display 194.

Illustratively, the display screen 194 of the handset 100 displays a main interface that includes icons for a plurality of applications (e.g., a camera application, a WeChat application, etc.). The user clicks the icon of the camera application in the home interface through the touch sensor 180K, which triggers the processor 110 to start the camera application and open the camera 193. The display screen 194 displays an interface, such as a viewfinder interface, for the camera application.

The wireless communication function of the mobile phone 100 can be realized by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modem processor, the baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the handset 100 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution including wireless communication of 2G/3G/4G/5G, etc. applied to the handset 100. The mobile communication module 150 may include at least one filter, a switch, a power amplifier, a Low Noise Amplifier (LNA), and the like. The mobile communication module 150 may receive the electromagnetic wave from the antenna 1, filter, amplify, etc. the received electromagnetic wave, and transmit the electromagnetic wave to the modem processor for demodulation. The mobile communication module 150 may also amplify the signal modulated by the modem processor, and convert the signal into electromagnetic wave through the antenna 1 to radiate the electromagnetic wave. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the same device as at least some of the modules of the processor 110. In the embodiment of the present application, the mobile communication module 150 may also be used for information interaction with other terminal devices.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating a low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then passes the demodulated low frequency baseband signal to a baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs a sound signal through an audio device (not limited to the speaker 170A, the receiver 170B, etc.) or displays an image or video through the display screen 194. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 150 or other functional modules, independent of the processor 110.

The wireless communication module 160 may provide solutions for wireless communication applied to the mobile phone 100, including Wireless Local Area Networks (WLANs) (e.g., wireless fidelity (Wi-Fi) networks), Bluetooth (BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), Infrared (IR), and the like. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, performs frequency modulation and filtering processing on electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, perform frequency modulation and amplification on the signal, and convert the signal into electromagnetic waves through the antenna 2 to radiate the electromagnetic waves. In this embodiment, the wireless communication module 160 may be used to access the access point device, and send and receive messages to other terminal devices.

In some embodiments, the antenna 1 of the handset 100 is coupled to the mobile communication module 150 and the antenna 2 is coupled to the wireless communication module 160 so that the handset 100 can communicate with networks and other devices through wireless communication techniques. The wireless communication technology may include global system for mobile communications (GSM), General Packet Radio Service (GPRS), code division multiple access (code division multiple access, CDMA), Wideband Code Division Multiple Access (WCDMA), time-division code division multiple access (time-division code division multiple access, TD-SCDMA), Long Term Evolution (LTE), LTE, BT, GNSS, WLAN, NFC, FM, 5G NR, and/or IR technology, among others. The GNSS may include a Global Positioning System (GPS), a global navigation satellite system (glosas), a beidou satellite navigation system (BDS), a quasi-zenith satellite system (QZSS), and/or a Satellite Based Augmentation System (SBAS).

In addition, the mobile phone 100 can implement an audio function through the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the earphone interface 170D, and the application processor. Such as music playing, recording, etc. The handset 100 may receive key 190 inputs, generating key signal inputs relating to user settings and function controls of the handset 100. The handset 100 can generate a vibration alert (e.g., an incoming call vibration alert) using the motor 191. The indicator 192 in the mobile phone 100 may be an indicator light, and may be used to indicate a charging status, a power change, or a message, a missed call, a notification, etc. The SIM card interface 195 in the handset 100 is used to connect a SIM card. The SIM card can be attached to and detached from the cellular phone 100 by being inserted into the SIM card interface 195 or being pulled out from the SIM card interface 195.

It should be understood that in practical applications, the mobile phone 100 may include more or less components than those shown in fig. 1A, and the embodiment of the present application is not limited thereto. The illustrated handset 100 is merely an example, and the handset 100 may have more or fewer components than shown in the figures, may combine two or more components, or may have a different configuration of components. The various components shown in the figures may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.

The software system of the terminal device may adopt a layered architecture, an event-driven architecture, a micro-core architecture, a micro-service architecture, or a cloud architecture. The embodiment of the invention takes an Android system with a layered architecture as an example, and exemplarily illustrates a software structure of a terminal device. Fig. 1B is a block diagram of a software configuration of a terminal device according to an embodiment of the present invention.

The layered architecture divides the software into several layers, each layer having a clear role and division of labor. The layers communicate with each other through a software interface. In some embodiments, the Android system is divided into four layers, an application layer, an application framework layer, an Android runtime (Android runtime) and system library, and a kernel layer from top to bottom.

The application layer may include a series of application packages.

As shown in fig. 1B, the application package may include applications such as phone, camera, gallery, calendar, phone call, map, navigation, WLAN, bluetooth, music, video, short message, etc.

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 includes a number of predefined functions.

As shown in FIG. 1B, the application framework layers may include a window manager, content provider, view system, phone manager, resource manager, notification manager, and the like.

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 view system 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 a communication function of the terminal equipment. Such as management of call status (including on, off, 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, text information is prompted in the status bar, a prompt tone is given, the terminal device vibrates, an indicator light flickers, and the like.

The Android Runtime comprises a core library and a virtual machine. The Android runtime is responsible for scheduling and managing an Android system.

The core library comprises two parts: one part is a function which needs to be called by java language, and the other part is a core library of android.

The application layer and the application framework layer run in a virtual machine. And executing java files of the application program layer and the application program framework layer into a binary file by the virtual machine. The virtual machine is used for performing the functions of object life cycle management, stack management, thread management, safety and exception management, garbage collection and the like.

The system library may include a plurality of functional modules. For example: surface managers (surface managers), Media Libraries (Media Libraries), three-dimensional graphics processing Libraries (e.g., OpenGL ES), 2D graphics engines (e.g., SGL), and the like.

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.164, MP3, AAC, AMR, JPG, PNG, etc.

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

The 2D graphics engine is a drawing engine for 2D drawing.

The kernel layer is a layer between hardware and software. The inner core layer at least comprises a display driver, a camera driver, an audio driver and a sensor driver.

The following describes an exemplary workflow of software and hardware of the mobile phone 100 in conjunction with a scenario of network system switching of the mobile phone 100 based on dual cards.

When the processor 110 detects that the sim card requires a version up, a corresponding hardware interrupt is issued to the kernel layer. And processing the kernel layer into a system switching event, and storing the system switching event in the kernel layer. The kernel layer drives the mobile communication module to search the network according to the system switching event, and realizes the screening and switching of the system according to the search result.

In order to explain the technical solution described in the present application, the following description will be given by way of specific examples.

Fig. 2 shows a flowchart of an implementation of a network system switching method based on dual cards according to an embodiment of the present application, which is detailed as follows:

and S200, if the preset trigger condition is detected, executing S201.

The embodiment of the application does not excessively limit the triggering condition for the specific host card resident system version promotion, and can be set by technical personnel according to actual requirements. For example, the triggering may be timed triggering or manual triggering by a user, and the triggering condition is that a set time is reached or a triggering instruction of the user is detected.

The application scenario actually encountered by the terminal device in the actual situation may be various and complicated. Among these different scenarios, there are some scenarios with a greater demand for the host card to be upgraded to a higher-version system in time. Therefore, effective identification and timely response to the scenes can be realized by setting a certain trigger condition, so that the service processing capacity of the terminal equipment can be effectively improved in time. Several alternative embodiments are provided below, taking as an example the handling of several possible encountered scenarios and the triggering conditions corresponding to the scenarios

1. Aiming at the scene with active requirements of users. According to the embodiment of the application, the corresponding system lifting function can be set in the terminal equipment. At this time, the triggering condition is that the user starts the system lifting function. That is, when it is detected that the system lifting function is started by the user, S201 in the embodiment of the present application is started.

The system upgrading function may be a specific new function, or may include some original functions in the terminal device. For example, the original functions that would trigger network re-search, such as the device restart function, the flight mode function, and the device boot function, may be set as the above-mentioned system upgrade function. At this time, the corresponding trigger condition is the device start-up or the device close flight mode, etc.

2. And carrying out a cell network switching scene aiming at the main card. If the terminal device is moved from the cell due to a large physical displacement, the main card needs to perform cell network switching, or the main card performs cell network switching due to other factors, so that the corresponding cell information changes. The cell information may be changed as a trigger condition.

3. The method aims at the situation that the signal is weakened due to the fact that the user moves to an area with weak signal strength (such as a garage, an underground mall and a room) or due to the influence of shelters. At this moment, the embodiment of the application can detect the change of the signal quality of the main card of the terminal equipment, and the condition that the quality of the side-by-side signal is lower than the preset threshold value is taken as a trigger condition. If the detected signal quality is lower than the preset threshold, S201 in the embodiment of the present application is initiated. The method of evaluating Signal quality is not limited herein, and can be set by a technician, for example, Reference Signal Receiving Power (RSRP) can be used as a Reference index of Signal quality. Meanwhile, the specific size of the preset threshold can be set by a technician according to actual requirements, and is not limited herein. At this time, the system can be quickly upgraded.

4. Aiming at the scene that the terminal equipment has the mode fallback. For example, when the terminal device does not support high definition Voice over LTE (VoLTE), the terminal device may fall back to 2G or 3G each time the user makes a call. And when the user finishes making a call, the terminal equipment can perform network search again on the main card to return to the system with the higher version. For example, when the user enters an area with poor signal quality, the terminal device switches to the network with the low-version system. For such a situation, the embodiment of the present application may detect whether a system drop occurs in the terminal device, and if the system drop occurs, a condition of the system rise is used as a trigger condition of the embodiment of the present application to start S201. For example, for the case of no support of VoLTE, the trigger condition is set to: the system falls back due to the voice service and the voice service ends. At this time, when the voice service is ended, S201 is started. At the moment, the system can be quickly upgraded under the condition of system fallback.

5. It is considered that in practical situations, even if the user does not experience a large physical displacement, the network signal quality does not significantly degrade. The situation that the version of the main card resident system is low and needs to be upgraded may also occur. To cope with this, a timing trigger task is set in the embodiment of the present application. That is, the timer triggers the operation of S201 at a preset time interval or time point. At this time, the triggering condition is that the timing reaches a preset triggering time point, or the timer triggers a timing triggering task of system lifting.

6. For some scenes with remote assistance requirements, for example, it is desirable to provide some remote system switching functions for technicians, so that the technicians can remotely assist users in system upgrading of terminal equipment. The triggering condition is that a preset triggering instruction is received. The triggering instruction may be an instruction sent by other users or technicians through other devices to assist the user terminal device in system upgrade.

As can be seen from the above description, one or more different trigger conditions may be set for different actual scenarios to meet the requirements of the actual scenarios. Therefore, the embodiment of the present application does not excessively limit the content of the specific trigger condition, and can be set by a technician according to actual requirements. The trigger condition may be a single trigger condition corresponding to the above 6 scenarios, or may include a plurality of conditions simultaneously, or may include other conditions designed by some technicians.

As an optional embodiment of the present application, all the trigger conditions corresponding to the above 6 scenarios may be set as the trigger conditions of the embodiment of the present application. At this moment, the embodiment of the application can at least meet the actual requirements of the scenes in the 6, so that the main card system versions in different scenes are quickly promoted, the requirements of different scenes are compatibly processed, and the compatibility is stronger.

S201, acquiring the number of user identification cards in the terminal equipment, a first network system where the main card resides in real time, and a second network system which is supported by the highest main card slot.

In consideration of practical situations, one SIM card or two SIM cards may be actually inserted into the terminal device. For the case that only one SIM card is inserted, the inserted SIM card is handled as a main card, and the main card can perform data service and call service. Since there is no sub card at this time, the system condition of the sub card cannot be referred to. Therefore, the number of SIM cards inserted in the terminal device is identified.

Among them, in the case where two SIM cards are inserted. In practical application, the method for distinguishing the main card from the auxiliary card may be different according to different conditions of the terminal device, and the method needs to be determined according to practical conditions. For example, some terminal devices distinguish a main card slot and an auxiliary card slot when setting a physical card slot, and the card inserted into the main card slot is the main card and the card inserted into the auxiliary card slot is the auxiliary card. Some terminal devices do not divide the card slot into a main card and a secondary card, but the user can manually select one of the two SIM cards as the main card and the other one as the secondary card. At this time, the card slot in which the main card is located is the main card slot, and the card slot in which the auxiliary card is located is the auxiliary card slot.

In addition, the embodiment of the application can acquire the network standard (namely, the second network standard) condition actually supported by the master card slot, and determine the standard of the highest version. Meanwhile, the current resident system (namely the first network system) of the main card is obtained, and the version comparison is carried out between the main card and the second network system, so that whether the system improvement is needed or not is judged.

S202, if the number is 1 and the version of the first network system is lower than that of the second network system, network searching is performed by using the network searching module corresponding to the secondary card slot, so as to obtain at least one first cell network and a third network system supported by each first cell network.

When only one SIM card exists and the network standard version does not reach the highest version supported by the main card slot, the main card of the terminal equipment can also reside in a higher version standard theoretically. Therefore, at this time, if the main card can be switched to a higher version system, the terminal device can obtain a stronger data service capability.

In order to improve the version of the main card resident system, in the embodiment of the present application, network search is performed by using the network searching module corresponding to the secondary card slot, so as to determine all cell networks (i.e. a first cell network) accessible by the main card and the system (i.e. a third network system) supported by each cell network. The embodiment of the present application does not excessively limit the specific network search operation, and may be determined by a technician according to an actual situation.

As an embodiment of the present application, it is considered that there may be more cell networks actually searchable by the secondary card slot, which may include networks of a plurality of different operators. In practical applications, the master card can generally register only with the network of the operator to which the master card belongs. For example, assuming that the primary card operator is operator a, the secondary card slot may actually search for the cell networks of operator a, operator B, and operator C at the same time. At this time, the master card can be registered for use only in the cell network of operator a. Therefore, the embodiment of the application can match the actual operators of the cell networks when the cell network search and the system determination are carried out. And only the cell network of the operator to which the master card belongs will be treated as the first cell network in the embodiment of the present application.

As an optional embodiment of the present application, if the highest supported network standard of the master card in the terminal device is 5G, and the dual modes of NSA and SA are supported. In order to search for the 5G standard, when performing network search, a New Radio (NR) cell in the SA mode is preferentially searched. Meanwhile, when searching for NSA point-drawing cells, reading SIB2 system message in cell information. If the SIB2 system message is read to include the ULI indication, it is determined that the cell supports NSA, that is, it is determined that the cell supports 5G standard.

As an optional embodiment of the present application, in the network search process, the search for the frequency point may perform limited search for the recorded historical frequency point, so as to improve the search efficiency.

S203, if the third network system has a network system with a version higher than that of the first network system, the target network system with the highest version is screened out from the third network system, first cell information of a first cell network to which the target network system belongs is obtained, and network registration is carried out on the master card based on the first cell information, so that the master card resides in the target network system.

If the searched system has a system version higher than the current resident system version of the main card, the main card of the terminal equipment can also reside in the higher version system theoretically. Therefore, in the embodiment of the application, the format with the highest version in the searched formats can be further screened out as the target network format. For example, assume that the searched formats include 2G, 3G, 4G and 5G, and the current resident format of the master card is 3G. Because the 4G and 5G versions are higher than the 3G, at this time, in the embodiment of the present application, the 5G standard with the highest version is screened from the 2G, the 3G, the 4G, and the 5G is taken as the target network standard in the embodiment of the present application.

After the target network type is determined, the cell network to which the target network type belongs is also determined in the embodiment of the application, so that the network to which the main card needs to be registered and accessed is determined. For example, assume cell network a, cell network b, and cell network c, all four of which are the operator networks of the primary card. Wherein, the cell network a supports 3G, the cell network b supports 4G, and the cell network c supports 5G. At this time, the cell network c corresponding to 5G is the network to which the master card needs to register for access. Meanwhile, the main card can be accessed to the cell network quickly. In the embodiment of the application, the cell information of the cell network to which the target network system belongs is shared to the master card, and at the moment, the master card can be quickly registered to the cell network according to the cell information, so that network access and system switching are realized. In the embodiment of the present application, the specific information content of the cell information is not limited herein, and the technical staff may select and set the cell information according to the actual cell network registration requirement. For example, in some embodiments, the cell information may include frequency bins and physical cell identities for the cells.

The target network system version is higher than the system in which the main card currently resides, so that the main card system can be improved by switching to the target network system, and the capability of the terminal equipment data service is enhanced. And because the network searching module corresponding to the auxiliary card slot is used for network searching, the network searching process cannot cause interference to the normal service of the main card. And meanwhile, the screened cell information of the cell network is shared to the main card, so that the main card can realize rapid registration of the access network. Therefore, the influence of the whole network searching and network accessing process on the main card service is minimized, and the normal use of the terminal equipment by the user is ensured. Finally, one or more trigger mechanisms can be set according to actual requirements, so that the embodiment of the application can actively reside the master card in the high-version system in time, and the time in the low-version network can be shortened.

S204, if the number is 2 and the version of the first network system is lower than that of the second network system, acquiring a fourth network system where the secondary card resides in real time, a first operator of the primary card and a second operator of the secondary card.

When there are two SIM cards and the master card network format version does not reach the highest version supported by the master card slot, it indicates that the terminal device master card can also reside in a higher version format theoretically. Therefore, at this time, if the main card can be switched to a higher version system, the terminal device can obtain a stronger data service capability.

In order to realize the promotion of the version of the main card resident system, the embodiment of the application realizes the determination of the high-version system by using the network searching module corresponding to the auxiliary card or the auxiliary card slot. Specifically, when the operator of the secondary card is the same as the operator of the primary card, the primary card may theoretically register to the network, indicating the cell network in which the secondary card is registered. Therefore, if the system version (i.e. the fourth network system) in which the auxiliary card resides is higher than the system in which the main card resides, the cell information registered by the auxiliary card can be used to assist the main card to quickly register, thereby realizing the promotion of the system version of the main card. At the moment, network search is not needed, so that the influence on normal use of the terminal equipment by a user is avoided as much as possible, and the system improving speed is improved. Based on this principle, in S204, the embodiment of the present application further obtains the system where the secondary card currently resides, and the operator conditions of the primary card and the secondary card.

S205, if the first operator is the same as the second operator and the fourth network standard is the same as the second network standard, acquiring second cell information of a second cell network accessed by the secondary card in real time, and performing network registration on the primary card based on the second cell information so as to enable the primary card to reside in the fourth network standard.

When the operators of the main card and the auxiliary card are the same and the current resident system version of the auxiliary card is equal to the highest version supported by the main card, the highest system version of the main card can only be promoted to the current resident system version of the auxiliary card. Therefore, at this time, the embodiment of the present application may obtain the cell information of the cell network (i.e., the second cell information of the second cell network) accessed by the secondary card in real time, and share the cell information to the primary card, so that the primary card may quickly register in the cell network. Thereby quickly raising the standard version to the highest.

And S206, if the first operator and the second operator are the same and the version of the fourth network standard is lower than that of the second network standard, performing network search by using the network searching module corresponding to the secondary card slot to obtain at least one first cell network and a third network standard supported by each first cell network. And S203 is performed.

When the operators of the main card and the auxiliary card are the same, and the currently resident standard version of the auxiliary card is lower than the highest version supported by the main card slot, no matter whether the currently resident standard version of the auxiliary card is higher than the currently resident standard version of the main card, the auxiliary card cannot be accessed to the cell network in real time to upgrade the standard version of the main card to the highest version. For example, assume that the currently resident format version of the primary card is 3G, the highest supported format version is 5G, and the currently resident format version of the secondary card is 4G. At this time, even if the main card is assisted to register and access the network by using the cell information accessed by the secondary card in real time, the version of the main card can only be upgraded to 4G. However, in actual situations, there may be a 5G network supported by the main card in the cell network around the terminal device. Therefore, the purpose of increasing the version of the main card system as much as possible cannot be achieved at this time.

Therefore, when the current resident standard version of the secondary card is lower than the highest version supported by the main card slot, the embodiment of the application does not need to deal with the heights of the current resident standard version of the secondary card and the current resident standard version of the main card, and network searching is performed by using the network searching module corresponding to the secondary card slot so as to improve the resident standard version of the main card to the greatest extent. For specific network searching operation and registration network accessing operation, reference may be made to the relevant descriptions of S202 and S203, which are not described herein again.

And S207, if the first operator is different from the second operator, using the network searching module corresponding to the secondary card slot to perform network search to obtain at least one first cell network and a third network standard supported by each first cell network. And S203 is performed.

When the operators of the main card and the auxiliary card are different, the main card cannot register and access the cell network accessed by the auxiliary card in real time. That is, the reference meaning is lost no matter what the current system version of the secondary card is, similar to the case that only one SIM card is inserted. Therefore, in the embodiment of the application, the network searching module corresponding to the secondary card slot is used for network searching at this time, so as to furthest promote the resident version of the primary card. For specific network searching operation and registration network accessing operation, reference may be made to the relevant descriptions of S202 and S203, which are not described herein again.

As an alternative embodiment of the present application, it is considered that the terminal device may be a dual-card dual-standby single-pass device in practical situations. At this time, the main card slot and the auxiliary card slot share the baseband and the radio frequency unit when performing service processing, so that the network searching module of the auxiliary card slot may have a certain influence on the normal service of the main card when performing network search. Therefore, in order to reduce the influence as much as possible, normal operation of the main card service is ensured. In the embodiment of the present application, the network searching operation performed by the network searching module corresponding to the secondary card slot and the network registration operation performed on the main card based on the cell information are both performed when the main card is in an idle state. That is, the main card does not perform the data service or voice service, and then performs the network search and registration. At this time, the user can normally use the main card service without sensing the system switching process of the main card in the embodiment of the application.

As an optional embodiment of the present application, when the terminal device searches for a network, the efficiency and effect of searching can be improved according to the recorded historical frequency points. Therefore, in order to further improve the searching capability of network search on the high-version system, in the embodiment of the present application, while the master card successfully registers the cell network of the high-version system each time, the frequency point information of the high-version system and the physical cell identifier are recorded into the historical frequency point. And then the terminal equipment can quickly search the recorded high-version system according to the historical frequency points. For example, if the 5G frequency point information and the physical cell identifier are recorded in the historical frequency points, then when performing network search, network search can be preferentially performed according to the historical frequency points, thereby improving the search capability of the 5G frequency points.

Specifically, when the standard to be recorded is a 5G standard, the recording of the historical frequency points includes:

under NSA networking, reading SIB2 information of a main card registration cell, and recording a Long Term Evolution (LTE) frequency point supporting NSA and a physical cell identifier of the main card registration cell into a history frequency point of a main card.

And under the SA networking, reading the NR system message of the main card registration cell, and adding the NR frequency point information into the historical frequency point.

As an optional embodiment of the present application, in the case that frequency point data of multiple systems is recorded in a historical frequency point, the frequency point data may be prioritized according to the system version. The higher the version is, the higher the priority is, that is, the frequency point of the system with the higher version is set as the high-level priority. Therefore, in the process of network search, the network search can be preferentially carried out on the high-version system according to the priority level, and the search capability and efficiency are improved.

As an optional embodiment of the present application, after the master card completes registration to the high-version system, the network searching module of the secondary card slot stops network searching. Thereby restoring the voice service capability of the secondary card.

In the embodiment of the application, effective handling of various actual scenes is realized by setting one or more trigger conditions, so that the time in a low-version system network can be shortened. And when the triggering condition is detected, the number of the SIM cards inserted into the terminal equipment, the resident mode of the main card and the highest mode supported in the terminal equipment are started. And then determining a specific network searching strategy according to the number of the SIMs and the master card system condition. And for the condition that two SIM cards with the same operator exist and the system version of the auxiliary card resident is the highest system version supported by the main card, sharing the cell information of the auxiliary card to the main card, so that the main card can rapidly register the high-system network. And for other cases, the network searching module of the auxiliary card slot is used for searching the network. And then system screening is carried out according to the network searching condition, and cell information corresponding to the available highest version system is shared to the main card, so that the main card can rapidly carry out high-system network registration. For the master card, in the whole system switching process, network registration is carried out only according to cell network information, and complex network searching operation is not required, so that the currently available highest version system can be upgraded. Therefore, the influence on the normal service use of the main card is extremely small. In addition, the network searching module corresponding to the auxiliary card slot can be actively used for searching the network, and the system of the main card is improved.

When the method is applied by combining 5G, due to the limitations of the network selection strategy and the network searching time in the prior art, the master card may not select the highest standard cell, the anchor cell cannot be selected in the NSA networking, and the NR cell cannot be selected in the SA networking. By combining the embodiment of the application, the main card can be quickly registered and accessed to the 5G cell network under the condition that the auxiliary card slot can search the cell network supporting the 5G system. And further, the user can stay in the 5G cell network for a longer time, the data service capability is improved, and the experience of the user on the 5G service is improved.

In consideration of practical application, the terminal device may not distinguish the main card slot and the sub card slot, nor distinguish the main card slot and the sub card slot, that is, both the two card slots have data service and voice service capabilities. At this time, the card slots may be named as a first card slot and a second card slot, and the SIM card inserted into the first card slot is called as a first SIM card, and the SIM card inserted into the second card slot is called as a second SIM card. Theoretically, only one SIM can be used normally, and normal use of the terminal equipment by a user can be guaranteed. Therefore, when the SIM card resident system version is low, a corresponding system upgrading strategy is also needed to improve the SIM card resident system version so as to improve the data service capability of the terminal device.

Fig. 3A, fig. 3B, and fig. 3C show an implementation flowchart of a network system switching method based on a dual card according to a second embodiment of the present application, which is detailed as follows:

and S300, if the preset trigger condition is detected, executing S301.

S300 is substantially the same as S200, so the description of S200 can be referred to for the principle, operation and effect of the trigger condition. The difference from S200 is that: in the embodiment of the present application, there is no difference between the main card and the sub card, so in the description of S200, the main card may be replaced by any one SIM card.

S301, detecting a user identification card contained in the terminal equipment.

In consideration of practical situations, one SIM card or two SIM cards may be actually inserted into the terminal device. For the case that only one SIM card is inserted, the inserted SIM card is handled as a service use card, and the SIM card can perform data service and call service. Since there is no other SIM card at this time, the system condition of the other SIM card cannot be referred to. Thus, the fact that the SIM card is inserted in the terminal device is recognized.

S302, if only one SIM card is contained, acquiring a fifth network system where the SIM card resides in real time and a sixth network system supported by the highest card slot of the SIM card.

When only one SIM card exists in the terminal device, the embodiment of the present application may obtain a network standard (i.e., a fifth network standard) in which the SIM card resides in real time and a network standard (i.e., a sixth network standard) that is supported by the highest card slot to which the SIM card belongs. For example, assuming that the SIM card is the first SIM card, the network standard where the first SIM card resides in real time and the network standard that is supported by the first card slot at the highest level may be obtained at this time.

And S303, if the version of the fifth network system is lower than that of the sixth network system, performing network search by using a network searching module corresponding to a card slot in which a subscriber identity module card is not inserted to obtain at least one third cell network and a seventh network system supported by each third cell network.

If the current resident network standard version of the inserted SIM card does not reach the highest version supported by the card slot to which the SIM card belongs, the SIM card can also be resident in a higher version standard theoretically. Therefore, at this time, if the SIM card can be switched to a higher version system, the terminal device can obtain a stronger data service capability.

S304, if the seventh network system has a network system with a version higher than that of the fifth network system, a first target system with the highest version is screened from the seventh network system, third cell information of a third cell network to which the first target system belongs is obtained, and network registration is performed on the contained user identification card based on the third cell information, so that the user identification card resides in the first target system.

The principle, operation details, effects, and the like of S303 and S304 are substantially the same as S202 and S203, so that reference may be made to the description of S202 and S203, which is not repeated herein. The difference from S202 and S203 is that the present embodiment has no main card, and therefore the concept of the main card in S202 and S203 needs to be replaced with a SIM card actually inserted in the present embodiment. The inserted SIM card may be the first SIM card or the second SIM card, depending on the actual situation.

S305, if two user identification cards are included, acquiring the network standard where each user identification card resides in real time and the network standard which is supported by the highest card slot of each user identification card.

Corresponding to S302, two SIM cards may also be inserted into the terminal device at the same time, and at this time, it is necessary to identify whether each SIM card needs to perform system version upgrading. Therefore, the embodiment of the present application may obtain the currently resident standard of each SIM card and the highest supported standard of the card slot to which each SIM card belongs. Meanwhile, according to the relationship between the version of the current resident and the version of the highest supported system, the following situations can be classified:

1. the current resident systems of the two SIM cards are equal to the highest supported system corresponding to the card slot of the SIM card. For example, it is assumed that the highest supported standard of the first card slot is 5G, and the highest supported standard of the second card slot is 4G. Meanwhile, the current resident mode of the first SIM card is 5G, and the current resident mode of the second SIM card is 4G. This is case 1.

In case 1, since both the two SIM cards cannot perform format version upgrading any more, format switching operation is not required at this time.

2. The current resident systems of the two SIM cards are lower than the highest supported system corresponding to the card slot of the SIM cards. For example, it is assumed that the highest supported standard of the first card slot is 5G, and the highest supported standard of the second card slot is 4G. Meanwhile, the current resident mode of the first SIM card is 4G, and the current resident mode of the second SIM card is 3G. This is case 2.

For case 2, it is described that both SIM cards can further promote the system version. In actual situations, the network searching module of the card slot to which each SIM card belongs can be handed over to realize respective network searching and system upgrading. In practical applications, however, it is very likely that a user will use one or two SIM cards for data service or voice service. This may result in the user not using the terminal device normally. In order to solve the problem, in the embodiment of the present application, SIM card differentiation is performed according to actual service states of two SIM cards, and a network searching module of a card slot to which the SIM card in an idle state belongs is used to perform network search, and assist the SIM card in a connected state to perform system upgrading. The description may refer to S306 and the related steps.

3. In the two SIM cards, the current resident system of one SIM card is lower than the highest supported system corresponding to the card slot of the SIM card, and the current resident system of the other SIM card is the same as the highest supported system corresponding to the card slot of the SIM card. For example, it is assumed that the highest supported standard of the first card slot is 5G, and the highest supported standard of the second card slot is 4G. Meanwhile, the current resident mode of the first SIM card is 4G, and the current resident mode of the second SIM card is 4G. This is case 3.

For the case 3, in the embodiment of the present application, the SIM card in which the version of the network standard residing in real time is lower than the version of the network standard supported by the highest card slot to which the SIM card belongs is referred to as a third target card, and the SIM card in which the version of the network standard residing in real time is the same as the version of the network standard supported by the highest card slot to which the SIM card belongs is referred to as a fourth target card. This illustrates that the third target card can further upgrade the standard version. In an actual situation, the network searching module of the card slot to which the third target card belongs can be handed over to realize network searching and system upgrading of the third target card. However, in practical applications, this may result in that the third target card cannot process the traffic normally. When the third target card is used for processing data service or voice service, this will result in that the user cannot normally use the terminal device. In order to solve this problem, the embodiment of the present application may be based on the current residence systems of two SIM cards. The highest support system of the two card slots and the conditions of operators of the two SIM cards are used for determining whether system version promotion needs to be carried out on the third target card or not and determining a specific promotion mode. The description may refer to S312 and the related steps.

The description of case 2 is as follows:

s306, if the network system versions where the two SIM cards reside in real time are lower than the network system version supported by the highest card slot of the SIM cards, the service states of the two SIM cards are obtained.

In the embodiment of the present application, the service state of the SIM card is divided into an idle state and a connection state. The idle state refers to that the SIM card does not currently perform a data service or a voice service. The connection state refers to one or more services of data service and voice service currently performed by the SIM card. In the embodiment of the present application, two SIM cards can perform data services simultaneously, so the service states of the two SIM cards include the following possibilities:

a. and both the two SIM cards are in an idle state.

b. And both the two SIM cards are in a connected state.

c. One of the two SIM cards is in a connected state, and the other SIM card is in an idle state.

In case a, because both the two SIM cards are in the idle state, theoretically, even if the network searching model corresponding to the card slot to which the SIM card belongs is used for network searching and system switching, the normal use of the user is not affected. On this basis, as an optional embodiment of the present application, network searching modules of card slots to which the respective SIM cards belong may be handed over to implement respective network searching and system upgrading. As another optional embodiment of the present application, in order to prevent two SIM cards from performing format enhancement simultaneously, the terminal device cannot be used for a period of time. In the embodiment of the present application, the timing of system lifting of two SIM cards may be staggered, that is, one of the SIM cards is firstly system lifted, and after the system lifting is completed, the system lifting operation of the other SIM card is performed. At this time, no matter which time slot, the terminal equipment has at least one usable SIM card, namely the terminal equipment can be normally used.

For the case b, the two SIM cards are all in the connected state, which indicates that the user needs to use the services of the two SIM cards simultaneously. Therefore, as an embodiment of the present application, for the case b, it may wait for the service statuses of the two SIM cards to change. When both SIM cards become idle, the processing may be performed according to the condition a. When only one SIM card becomes idle, the process can be performed according to the case c.

For case c, in order to reduce the influence on the normal use of the terminal device by the user as much as possible. In the embodiment of the application, the network searching module of the idle-state SIM card slot is utilized to assist the connected-state SIM card in system improvement, so as to improve the service processing capability of the terminal device. Therefore, the user can use a network with a higher standard to process the service. The following steps are specifically described with reference to S307.

And S307, if the service state of one subscriber identification card in the two subscriber identification cards is a connected state and the service state of the other subscriber identification card is an idle state, taking the subscriber identification card in the connected state as a first target card, taking the subscriber identification card in the idle state as a second target card, taking the network format in which the first target card resides in real time as an eighth network format, taking the network format which is supported by the highest card slot to which the first target card belongs as a ninth network format, and taking the network format in which the second target card resides in real time as a tenth network format, and acquiring a third operator of the first target card and a fourth operator of the second target card.

Specifically, when the operators of the two SIM cards are the same, the cell network registered by the idle SIM card is described, and the connected SIM card can theoretically register to the network. Therefore, if the system version (i.e., the tenth network system) in which the idle SIM card resides is higher than the system version in which the connected SIM card resides, the cell information registered by the idle SIM card can be used to assist the connected SIM card in registering quickly, thereby improving the system version of the connected SIM card. At the moment, network search is not needed, so that the influence on normal use of the terminal equipment by a user is avoided as much as possible, and the system improving speed is improved. Based on this principle, in S307, the embodiment of the present application further obtains the currently-resident standard of the idle SIM card and the operator conditions of the two SIM cards.

And S308, if the third operator and the fourth operator are the same and the tenth network standard and the ninth network standard have the same version, acquiring fourth cell information of a fourth cell network to which the second target card is accessed in real time, and performing network registration on the first target card based on the fourth cell information so as to enable the first target card to reside in the tenth network standard.

When the operators of the two SIM cards are the same and the currently resident format version of the idle SIM card is equal to the highest format (i.e. the ninth network format) supported by the connected SIM card, it is indicated that the connected SIM card is the highest and can only upgrade the format version to the currently resident format version of the idle SIM card. Therefore, at this time, the embodiment of the present application may obtain cell information of a cell network (i.e., fourth cell information of a fourth cell network) to which the idle-state SIM card is accessed in real time, and share the cell information with the connected-state SIM card, so that the connected-state SIM card may be quickly registered in the cell network. Thereby quickly raising the standard version to the highest.

And S309, if the third operator and the fourth operator are the same and the version of the tenth network standard is lower than that of the ninth network standard, performing network search by using the network search module corresponding to the card slot to which the second target card belongs to obtain at least one fifth cell network and an eleventh network standard supported by each fifth cell network.

S310, if the eleventh network system has a network system with a version higher than that of the eighth network system, a second target system with the highest version is screened from the eleventh network system, fifth cell information of a fifth cell network to which the second target system belongs is acquired, and network registration is performed on the first target card based on the fifth cell information, so that the first target card resides in the second target system.

When the operators of the two SIM cards are the same, and the currently resident standard version of the idle SIM card is lower than the highest version supported by the connected SIM card, no matter whether the currently resident standard version of the idle SIM card is higher than the currently resident standard version of the connected SIM card (i.e. the eighth network standard), the connected SIM card cannot be upgraded to the highest standard version by accessing the idle SIM card to the cell network in real time. Therefore, when the currently-resident standard version of the idle-state SIM card is lower than the highest version supported by the card slot of the connected-state SIM card, the network searching module corresponding to the card slot of the idle-state SIM card is used for network searching instead of managing the heights of the currently-resident standard version of the idle-state SIM card and the currently-resident standard version of the connected-state SIM card, so as to improve the resident standard version of the connected-state SIM card to the greatest extent. For specific network searching operation and registration network accessing operation, reference may be made to the relevant descriptions of S202 and S203, which are not described herein again.

And S311, if the third operator is different from the fourth operator, performing network search by using the network search module corresponding to the card slot to which the second target card belongs to obtain at least one fifth cell network and an eleventh network standard supported by each fifth cell network. And performs step S310.

When the operators of the two SIM cards are different, the connected SIM card cannot be registered to access the cell network accessed by the idle SIM card in real time. That is, the reference meaning is lost no matter what the current system version of the idle state SIM card is, which is similar to the case that only one SIM card is inserted. Therefore, in the embodiment of the application, the network searching module corresponding to the idle-state SIM card slot is used for network searching at this time, so as to improve the resident system version of the connected-state SIM card to the greatest extent. For specific network searching operation and registration network accessing operation, reference may be made to the relevant descriptions of S202 and S203, which are not described herein again.

In the embodiment of the application, for the case 2 that the network standard versions where two SIM cards reside in real time are both lower than the network standard version supported by the highest card slot to which each SIM card belongs, a suitable standard switching policy is selected according to the actual service state of the SIM card. For the connected SIM card, the actual service processing is preferentially ensured, network searching is performed by a network searching module of the idle SIM card slot, and the connected SIM card is assisted to perform system version promotion. For the case that both are in idle states, the opportunity of staggering the system version promotion can be selected, so that the normal service of the terminal equipment is not greatly influenced. Therefore, the embodiment of the application can ensure that the user normally uses the service of the terminal equipment to the maximum extent, and realize timely and effective promotion of the SIM card version under the condition of reducing the influence on the normal service use of the terminal equipment.

The description of case 3 is as follows:

s312, if there exists a third target card in which the version of the eleventh network format residing in real time is lower than the version of the twelfth network format supported by the highest card slot to which the third target card resides and a fourth target card in which the version of the thirteenth network format residing in real time is the same as the version of the fourteenth network format supported by the highest card slot to which the fourth target card resides, the versions of the twelfth network format and the fourteenth network format are compared.

For the third target card, system version promotion can be theoretically performed, so that the terminal device obtains stronger service processing capability. Theoretically, there are two ways of system version promotion at this time: and carrying out network search by the network searching module corresponding to the card slot to which the third target card belongs, and then carrying out corresponding system screening switching operation. This may affect the normal traffic usage of the third target card. Or the network searching module corresponding to the card slot to which the fourth target card belongs carries out network searching, and then corresponding system screening switching operation is carried out. This may affect the normal service usage of the fourth target card. Both approaches have their own advantages and disadvantages. In order to determine a suitable approach to improve the service processing capability of the terminal device as much as possible, the embodiment of the present application further subdivides the case 3 into:

3.1, the version of the format (namely, the thirteenth network format) where the fourth target card currently resides is higher than the format (namely, the twelfth network format) which is supported by the highest card slot of the third target card. For example, assume that the current resident standard of the fourth target card is 5G, the highest supported standard of the card slot to which the third target card belongs is 4G, and the current resident standard of the third target card is 3G.

For the case 3.1, the current resident system of the fourth target card is the highest version system available to the terminal device. At this time, if the fourth target card network is affected, the service processing capability of the terminal device may be reduced. Therefore, as an alternative embodiment of the present application, it is preferable to ensure that the fourth target card service is normally used. Namely, the version of the resident standard of the third target card is promoted, network search can be performed by the network search module corresponding to the card slot to which the third target card belongs, and then corresponding standard screening and switching operations are performed. Or the third target card may not be processed, that is, the system is not upgraded.

3.2, the version of the system where the fourth target card currently resides is lower than the highest supported system of the card slot to which the third target card belongs. For example, assume that the current resident standard of the fourth target card is 4G, the highest supported standard of the card slot to which the third target card belongs is 5G, and the current resident standard of the third target card is 4G.

At this time, it is stated that by performing system version upgrading on the third target card, the service processing capability of the terminal device may be further improved. Therefore, in the embodiment of the present application, the network search module corresponding to the card slot to which the fourth target card belongs performs network search, and then performs corresponding system screening and switches the system of the third target card. So as to promote the standard version of the third target card.

And 3.3, the current resident standard of the fourth target card is the same as the highest supported standard version of the card slot of the third target card. For example, it is assumed that the current resident standard of the fourth target card is 5G, the highest supported standard of the card slot to which the third target card belongs is also 5G, and the current resident standard of the third target card is 4G.

For the case 3.1, the current resident system of the fourth target card is the highest version system available to the terminal device. At this time, if the fourth target card network is affected, the service processing capability of the terminal device may be reduced. Therefore, as an alternative embodiment of the present application, it is preferable to ensure that the fourth target card service is normally used. For the third target card, the system switching process may not be performed. Or the network searching module corresponding to the card slot to which the third target card belongs can search the network and then perform the corresponding system screening switching operation. Meanwhile, under the condition that the operators of the two SIM cards are the same, the cell information of the real-time access cell network of the fourth target card can be shared by the third target card, so that the third target card can quickly register the access network.

As an alternative embodiment of the present application, after S312, the method further includes:

s313, if the version of the twelfth network is higher than the version of the fourteenth network, performing network search using the network search module corresponding to the card slot to which the fourth target card belongs to obtain at least one seventh cell network and a fifteenth network supported by each seventh cell network.

For example, assume that the current resident standard of the fourth target card is 4G, the highest supported standard of the card slot to which the third target card belongs is 5G, and the current resident standard of the third target card is 4G. At this time, it is stated that by performing system version upgrading on the third target card, the service processing capability of the terminal device may be further improved.

And S314, if the fifteenth network system has a network system with a version higher than that of the eleventh network system, screening a third target system with the highest version from the fifteenth network system, acquiring seventh cell information of a seventh cell network to which the third target system belongs, and performing network registration on the third target card based on the seventh cell information so as to enable the third target card to reside in the third target system.

And S313 and S314 correspond to the condition 3.2, the network searching module corresponding to the card slot to which the fourth target card belongs carries out network searching, and then corresponding system screening is carried out and the system of the third target card is switched. So as to promote the standard version of the third target card. For specific network searching operation and registration network accessing operation, reference may be made to the relevant descriptions of S202 and S203, which are not described herein again.

Corresponding to case 3.1, if the version of the twelfth network system is lower than the version of the fourteenth network system. For example, it is assumed that the current resident standard of the fourth target card is 5G, the highest supported standard of the card slot to which the third target card belongs is also 5G, and the current resident standard of the third target card is 4G.

And at the moment, the current resident system of the fourth target card is the highest version system available for the terminal equipment. If the fourth target card network is affected, the service processing capability of the terminal device is reduced. Therefore, as an alternative embodiment of the present application, it is preferable to ensure that the fourth target card service is normally used. And the version of the resident system of the third target card is promoted, network search can be carried out by the network searching module corresponding to the card slot to which the third target card belongs, and then corresponding system screening and switching operation is carried out. Or the third target card may not be processed, that is, the system is not upgraded.

And S315, if the versions of the twelfth network system and the fourteenth network system are the same, acquiring operators of the two subscriber identity cards.

And S316, if the operators of the two subscriber identity cards are the same, performing network registration on the third target card by using the sixth cell information of the sixth cell network accessed by the fourth target card in real time, so that the third target card resides in a fourteen network system.

And if the operators of the two subscriber identity modules are different, and the versions of the twelfth network system and the fourteenth network system are the same. The system of the third target card is not switched, or the network searching module corresponding to the card slot to which the third target card belongs performs network searching, and then performs corresponding system screening and switching operation.

At this time, corresponding to the case 3.3, when the operators of the two SIM cards are the same, and the format version (i.e., the fourteenth network format) in which the fourth target card currently resides is equal to the highest version (i.e., the twelfth network format) supported by the third target card, it is indicated that the third target card is the highest and only the format version can be promoted to the format version in which the fourth target card currently resides. Therefore, at this time, the embodiment of the present application may obtain cell information of a cell network (i.e., sixth cell information of a sixth cell network) to which the fourth target card is accessed in real time, and share the cell information with the third target card, so that the third target card may be quickly registered in the cell network. Thereby quickly raising the standard version to the highest.

Corresponding to the case 3.3, when the operators of the two SIM cards are different and the format version of the fourth target card currently residing in the SIM cards is equal to the highest version supported by the third target card, it indicates that the third target card is the highest in energy to upgrade the format version to the format version of the fourth target card currently residing in the SIM cards. However, because the operators are different, the network rapid registration of the third target card cannot be realized by sharing the cell information. Therefore, in the embodiment of the present application, the system of the third target card may not be switched, or a network search module corresponding to the card slot to which the third target card belongs may perform network search, and then perform corresponding system screening and switching operations.

Meanwhile, some optional embodiments related to the embodiment shown in fig. 2 may also be applied by being combined with the embodiments of the present application, without departing from the scope of the present application. The description of the embodiments may refer to the description of the embodiment shown in fig. 2, and will not be repeated here. For example:

as an alternative embodiment of the present application, it is considered that the terminal device may be a dual-card dual-standby single-pass device in practical situations. At this time, the two card slots share the baseband and the radio frequency unit when performing service processing, so that the network searching module of a single card slot may have a certain influence on the normal service of the SIM card in the other card slot when performing network search. Therefore, in order to reduce the influence as much as possible, the normal operation of the terminal equipment service is ensured. In this embodiment of the present application, the network searching operation performed by the network searching module corresponding to the card slot and the network registration operation performed on the SIM card based on the cell information are both performed when the SIM card in the card slot is in an idle state. That is, the SIM card in the card slot does not perform data service or voice service, and the card slot performs network search and registration. At this time, the user can normally use the SIM card service without sensing the system switching process of the SIM card in the embodiment of the present application.

As an optional embodiment of the present application, when the terminal device searches for a network, the efficiency and effect of searching can be improved according to the recorded historical frequency points. Therefore, in order to further improve the searching capability of network search on the high-version system, in the embodiment of the present application, the frequency point information of the high-version system and the physical cell identifier are recorded into the historical frequency point while the SIM card successfully registers the cell network of the high-version system each time. And then the terminal equipment can quickly search the recorded high-version system according to the historical frequency points. For example, if the 5G frequency point information and the physical cell identifier are recorded in the historical frequency points, then when performing network search, network search can be preferentially performed according to the historical frequency points, thereby improving the search capability of the 5G frequency points.

As an optional embodiment of the present application, after a certain SIM card completes registration and resides in a high-version system, the network searching module of the card slot to which another SIM card belongs may stop network searching, so as to recover the data service and voice service capabilities of another SIM card.

In the embodiment of the application, the current resident standard of one of the two SIM cards is lower than the highest supported standard corresponding to the card slot of the SIM card, and the current resident standard of the other SIM card is the same as the highest supported standard corresponding to the card slot of the SIM card. And judging a reasonable way for improving the SIM card format by comparing the highest supported format version of the card slots of the two SIM cards. And the card slot with lower highest support standard capability is utilized to assist the card slot with higher highest support standard version to promote the SIM card system version in the card slot. Therefore, in the whole system lifting process, the normal use of the terminal equipment by a user is guaranteed. Meanwhile, for the card slot which actively carries out network search, the network search can be carried out only when the SIM card in the card slot is in an idle state, so that the influence of the network search on the service of the terminal equipment is avoided as much as possible.

Some illustrations of the embodiment shown in FIG. 2 and the embodiments shown in FIGS. 3A, 3B, and 3C:

in the operation process of performing the system version upgrade of the above embodiment, the following situations may exist in the terminal device, and whether the system version upgrade operation of the embodiment shown in fig. 2 and the embodiments shown in fig. 3A, fig. 3B, and fig. 3C occurs or not may be determined by detecting whether the situations occur or not:

1. since the baseband chip and the rf unit are needed for network searching, the overall power consumption of the terminal device may increase. For example, it can be shown that the standby current is increased relative to the standby current when the system version-up operation is not performed.

Specifically, the degree of the standby current increase needs to be determined according to the software and hardware conditions related to the actual network search of the terminal device. For example, in some actual tests, the normal standby current of the terminal device under test is about 8 ma, and in the operation process of using the above embodiment to perform system version promotion, the standby current is promoted by about 1 ma. The degree of lift is about 10% at this point.

2. When a certain card slot is used for network search, system information of a cell in the current environment, such as MIB messages and SIB messages, is read. When the card slot network search result is utilized to assist the SIM card in another card slot to reside in a high-version system cell, cell information is recorded in the MIB message, the SIB message and other messages. Therefore, it can be seen that the cell where the SIM card with the standard version promoted resides last is one of the cells searched by the card slot performing the network search.

It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to" determining "or" in response to detecting ". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".

Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance. It will also be understood that, although the terms first, second, etc. may be used herein to describe various elements in some embodiments of the application, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first network standard may be named the second network standard, and similarly, the second network standard may be named the first network standard without departing from the scope of the various described embodiments. The first network system and the second network system are both network systems, but they do not refer to the same network system.

Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

The network system switching method based on the dual cards provided by the embodiment of the application can be applied to terminal devices such as mobile phones, tablet computers, wearable devices, vehicle-mounted devices, Augmented Reality (AR)/Virtual Reality (VR) devices, notebook computers, ultra-mobile personal computers (UMPCs), netbooks, Personal Digital Assistants (PDAs), and the like, and the embodiment of the application does not limit the specific types of the terminal devices at all.

For example, the terminal device may be a Station (ST) in a WLAN, which 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 Wireless device, a Wireless modem card, a television 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, e.g., a terminal device in a 5G Network or a Public Land Mobile Network (future evolved, PLMN) terminal equipment in the network, etc.

By way of example and not limitation, when the terminal device is a wearable device, the wearable device may also be a generic term for intelligently designing daily wearing by applying wearable technology, developing wearable devices, such as glasses, gloves, watches, clothing, shoes, and the like. 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.

Fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in fig. 4, the terminal device 4 of this embodiment includes: at least one processor 40 (only one shown in fig. 4), a memory 41, said memory 41 having stored therein a computer program 42 executable on said processor 40. When the processor 40 executes the computer program 42, the steps in each embodiment of the network system switching method based on dual cards described above are implemented, for example, steps 200 to 204 shown in fig. 2, or steps 300 to 315 shown in the embodiments shown in fig. 3A, fig. 3B, and fig. 3C.

The terminal device 4 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal device may include, but is not limited to, a processor 40, a memory 41. It will be understood by those skilled in the art that fig. 4 is merely an example of a terminal device 4 and does not constitute a limitation of the terminal device 4 and may include more or less components than those shown, or some components may be combined, or different components, for example, the terminal device may also include an input transmitting device, a network access device, a bus, etc.

The Processor 40 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 41 may in some embodiments be an internal storage unit of the terminal device 4, such as a hard disk or a memory of the terminal device 4. The memory 41 may also be an external storage device of the terminal device 4, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the terminal device 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the terminal device 4. The memory 41 is used for storing an operating system, an application program, a BootLoader (BootLoader), data, and other programs, such as program codes of the computer program. The memory 41 may also be used to temporarily store data that has been transmitted or is to be transmitted.

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 embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in the above-mentioned method embodiments.

The embodiments of the present application provide a computer program product, which when running on a terminal device, enables the terminal device to implement the steps in the above method embodiments when executed.

The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize 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 storage medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like.

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.

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.

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.

Finally, it should be noted that: the above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A network standard switching method based on double cards is characterized in that the method is applied to terminal equipment, the terminal equipment comprises a main card slot and an auxiliary card slot, and the method comprises the following steps:

2. The dual-card-based network standard switching method according to claim 1, wherein the network searching module corresponding to the secondary card slot is used for network searching; the method comprises the following steps of screening out the standard with the highest version from all the standards obtained by network search, and switching the network standard where the master user identification card resides in real time to the standard with the highest version, wherein the method comprises the following steps:

3. The method according to claim 1 or 2, wherein before the network searching using the network searching module corresponding to the secondary card slot, the method further comprises:

acquiring the number of user identification cards in the terminal equipment;

4. The method according to claim 1 or 2, wherein before the network searching using the network searching module corresponding to the secondary card slot, the method further comprises:

acquiring the number of user identification cards in the terminal equipment;

5. The dual-card-based network standard switching method according to claim 4, further comprising:

6. The method according to claim 4, wherein if the first operator is different from the second operator, the network searching module corresponding to the secondary card slot is used to perform network search.

7. The method according to any one of claims 1 to 6, wherein before the acquiring the first network standard in which the primary user identification card resides in real time and the second network standard that is supported by the primary card slot at the highest level, the method further comprises:

and if the master user identification card is detected to have a mode drop in the voice service process, executing the operation of acquiring the first network mode where the master user identification card resides in real time and the second network mode which is supported by the master card slot at the highest level when the voice service is finished.

8. The method according to any one of claims 1 to 7, wherein the terminal device is a dual-card dual-standby single-pass device, and the network search is performed by using the network searching module corresponding to the secondary card slot, including:

9. A network standard switching method based on double cards is characterized in that the method is applied to terminal equipment, the terminal equipment comprises two card slots, and the method comprises the following steps:

10. The method according to claim 9, wherein the network searching module corresponding to the card slot of the two card slots into which the subscriber identity module card is not inserted is used for network searching; the method for screening out the system with the highest version from all the systems obtained by the network search and switching the network system where the inserted subscriber identity module card resides in real time to the system with the highest version comprises the following steps:

network searching is carried out by using a network searching module corresponding to a card slot which is not inserted with a user identification card in the two card slots, so as to obtain at least one third cell network and a seventh network standard supported by each third cell network;

11. A network standard switching method based on double cards is characterized in that the method is applied to terminal equipment, the terminal equipment comprises two card slots, and the method comprises the following steps:

12. The method for switching network formats based on dual cards according to claim 11, wherein a network format which is supported by the first target card at the highest in the card slot is taken as a ninth network format, and a network format in which the second target card resides in real time is taken as a tenth network format;

13. The dual-card-based network standard switching method according to claim 12, further comprising:

if the third operator is the same as the fourth operator and the tenth network standard is the same as the ninth network standard, acquiring fourth cell information of a fourth cell network to which the second target card is accessed in real time, and performing network registration on the first target card based on the fourth cell information so as to enable the first target card to reside in the tenth network standard.

14. A network standard switching method based on double cards is characterized in that the method is applied to terminal equipment, the terminal equipment comprises two card slots, and the method comprises the following steps:

15. The dual-card-based network standard switching method according to claim 14, further comprising:

if the versions of the twelfth network system and the fourteenth network system are the same, identifying the operators to which the two user identification cards belong;

16. The method for switching network standards based on two cards according to any one of claim 9, claim 11 and claim 14, wherein before the detecting the subscriber identity cards inserted into the two card slots, the method further comprises:

and if the user identification card is detected to have a mode drop in the voice service process, executing the operation of detecting the user identification cards inserted into the two card slots when the voice service is finished.

17. A terminal device, characterized in that the terminal device comprises a memory, a processor, a computer program being stored on the memory and being executable on the processor, the processor implementing the steps of the method according to any one of claims 1 to 8, or the steps of the method according to any one of claims 9 to 10, or the steps of the method according to any one of claims 11 to 13, or the steps of the method according to any one of claims 14 to 15 when executing the computer program.

18. A chip system, characterized in that the chip system comprises a memory and a processor, the processor executing a computer program stored in the memory to implement the steps of the method according to any one of claims 1 to 8, or the steps of the method according to any one of claims 9 to 10, or the steps of the method according to any one of claims 11 to 13, or the steps of the method according to any one of claims 14 to 15.