CN113473453B - Method and device for establishing network connection - Google Patents

Abstract

The embodiment of the application provides a method and a device for establishing network connection, the method can be suitable for terminal equipment supporting a plurality of Subscriber Identity Module (SIM) cards, the plurality of SIM cards comprise a first SIM card and a second SIM card, and network connection exists between the first SIM card and the network equipment, and the method comprises the following steps: the terminal equipment receives a first Radio Resource Control (RRC) message sent by the network equipment, wherein the first RRC message carries configuration information of the second SIM card accessing to the network; and the terminal equipment establishes network connection with the network equipment according to the configuration information. By adopting the method and the device for establishing the network connection, the time delay for establishing the network connection can be reduced, so that the transmission performance is improved.

Description

Method and device for establishing network connection

technical field

The present application relates to the communication field, and more specifically, to a method and device for establishing a network connection in the communication field.

Background technique

With the rapid development of communication technologies, more and more terminal devices (such as mobile phones) have the function of supporting multiple subscriber identification module (SIM) cards.

When a terminal device establishes a radio resource control (radio resource control, RRC) connection with a network device, it needs to initiate a random access process to the network device. Random access includes contention-based random access and contention-free random access. In the contention-based random access process, the terminal device randomly selects a preamble sequence to initiate a random access process to the network device. Due to the limited random access resources, the terminal device needs to compete for random access resources. Therefore, the random access delay longer, and may even fail to connect. In the contention-free random access process, the terminal device uses the preamble sequence allocated by the network device to initiate a random access process to the network device. Since the terminal device needs to obtain the preamble sequence through signaling interaction with the network device, Therefore, the time delay of random access is also relatively long.

Therefore, for a terminal device that supports multiple SIM cards, when the terminal device switches between SIM cards, it needs to establish a network connection for the newly used SIM every time it is switched, and for each SIM, no matter which random The network connection is established during the access process, and the time delay of random access is long, and the power consumption is high, so the time delay of network connection establishment is long and the transmission performance is poor.

Contents of the invention

The present application provides a method and device for establishing a network connection, which can reduce the time delay for establishing a network connection, thereby improving transmission performance.

In the first aspect, the embodiment of the present application provides a method for establishing a network connection, the method is applicable to a terminal device, and the terminal device supports a first subscriber identity module card and a second SIM card, and the first SIM card is connected to the network There is a network connection between the devices, and the method includes: the terminal device receiving a first radio resource control RRC message sent by the network device, the first RRC message carrying configuration information for accessing the network by the second SIM card ; The terminal device establishes a network connection with the network device according to the configuration information.

Using the method for establishing a network connection provided by the embodiment of the present application, when the first SIM card of the terminal device is in the connected state and the second SIM card is in the unconnected state, and the second SIM card needs to initiate a service, the network device can Send the configuration information for the second SIM card to access the network to the terminal device, and the terminal device can directly establish a network connection with the network device according to the configuration information without performing random access of the second SIM card. The input process can reduce the delay in establishing a network connection, thereby improving transmission performance.

In a possible implementation manner, the configuration information includes a cell radio network temporary identifier C-RNTI and radio resource information of the second SIM card.

Optionally, before the terminal device receives the first RRC message sent by the network device, the method further includes: the terminal device determines that the first SIM card is in a connected state; the terminal device determines that the second SIM card In a non-connected state, the non-connected state includes an idle state or a deactivated state; the terminal device determines that the second SIM card needs to initiate a service.

It should be noted that the terminal device may support multiple SIM cards. In this embodiment of the present application, the multiple SIM cards including the first SIM card and the second SIM are used as an example for introduction. It should be understood that the multiple SIM cards may also include other SIM cards or other numbers of SIM cards, which is not limited in this embodiment of the present application.

It should also be noted that the fact that the first SIM card is in a connected state may be understood to mean that there is a network connection between the first SIM card and the network device.

It should also be noted that the fact that the second SIM card is in a non-connected state may also be understood to mean that there is no network connection between the second SIM card and the network device.

Optionally, the terminal device may determine that the second SIM card needs to initiate a service in various ways, which is not limited in this embodiment of the present application.

In a first possible implementation manner, the terminal device may determine that the second SIM card needs to initiate a service according to a user operation.

For example, the terminal device may determine that the second SIM card needs to initiate a service according to the detected operation of the user using the second SIM card to make a call.

In a second possible implementation manner, the terminal device may receive an RRC message sent by the network device, where the RRC message carries a paging message for paging the second SIM card, and the terminal device may According to the paging message, it is determined that the second SIM card needs to initiate a service.

It should be noted that, according to the current states of the first SIM card and the second SIM card, this embodiment of the present application may be applicable to the following two application scenarios.

Application Scenario 1: The first SIM card is in a connected state, the second SIM card is in an idle state, and the second SIM card needs to initiate a service.

Application Scenario 2: The first SIM card is in a connected state, the second SIM card is in a deactivated state, and the second SIM card needs to initiate a service.

Other steps in the method 100 will be introduced below by taking application scenario 1 and application scenario 2 as examples respectively.

In a first possible implementation manner, the method further includes: when the first SIM card is in the connected state, the second SIM card is in the idle state, and the second SIM card needs to initiate a service, the The terminal device generates a network connection establishment request, and the network connection establishment request is used to request establishment of a network connection between the second SIM card and the network device; the terminal device sends a second RRC message to the network device , the second RRC message carries the network connection establishment request.

In a second possible implementation manner, the method further includes: when the first SIM card is in the connected state, the second SIM card is in the deactivated state, and the second SIM card needs to initiate a service, The terminal device generates a network connection recovery request, and the network connection recovery request is used to request recovery of the network connection between the second SIM card and the network device; the terminal device sends a second RRC to the network device message, the second RRC message carries the network connection recovery request.

Optionally, the network device may obtain the configuration information in various situations, which is not limited in this embodiment of the present application.

In a possible implementation manner, in the case of application scenario 1, the network device may determine that the terminal device needs to switch from the first SIM card to the second SIM card, and obtain the configuration information.

In another possible implementation, in the second application scenario, the network device may determine that the terminal device needs to switch from the first SIM card to the the second SIM card, and acquire the configuration information.

It should be noted that the switching of the terminal device from the first SIM card to the second SIM card can be understood as the switching of the first SIM card from the connected state to the non-connected state, and the switching of the second SIM card from the The unconnected state is switched to a connected state.

Optionally, the network device may obtain the configuration information in multiple ways, which is not limited in this embodiment of the present application.

In a first possible implementation manner, the network device may allocate the configuration information to the second SIM card by itself.

In a second possible implementation manner, the network connection may receive the configuration information sent by other network devices.

It should be noted that the terminal device may establish a network connection with the network device according to the configuration information by adopting an existing procedure for establishing a network connection. To avoid repetition, details are not described here.

It should also be noted that, in the case of application scenario 1, the terminal device may establish a network connection between the second SIM card and the network device; or in the case of application scenario 2, the terminal device The suspended network connection between the second SIM card and the network device may be resumed.

In a possible implementation manner, the method further includes: the terminal device sending first indication information to the network device, where the first indication information is used to indicate disconnection of the first SIM card from the A disconnection mode of the network connection between network devices, the disconnection mode includes suspension or release.

Optionally, the terminal device may send the first indication information to the network device in various ways, which is not limited in this embodiment of the present application.

In a possible implementation manner, the terminal device may send a fourth RRC message to the network device, where the fourth RRC message carries the first indication information.

In another possible implementation manner, the first indication information may be carried in the second RRC message.

It should be noted that the terminal device carries the first indication information in the second RRC message, which can reduce signaling overhead.

In a possible implementation manner, the method further includes: the terminal device receives a third RRC message sent by the network device through the network connection between the first SIM card and the network device, and the The third RRC message is used to indicate disconnection of the network connection with the first SIM card.

In a possible implementation manner, the first RRC message is also used to indicate disconnection of the network connection with the first SIM card.

In a possible implementation manner, the method further includes: the terminal device receives a third RRC message sent by the network device through the network connection between the second SIM card and the network device, and the The third RRC message is used to indicate disconnection of the network connection with the first SIM card.

In the second aspect, the embodiment of the present application also provides a method for establishing a network connection, including: the network device obtains the configuration information of the second subscriber identity module SIM card of the terminal device to access the network, wherein the terminal device supports the first SIM and the second SIM card, and there is a network connection between the first SIM card and the network device; the network device sends a first radio resource control RRC message to the terminal device, and the first RRC message carry the configuration information.

Using the method for establishing a network connection provided by the embodiment of the present application, when the first SIM card of the terminal device is in the connected state and the second SIM card is in the unconnected state, and the second SIM card needs to initiate a service, the network device can Send the configuration information for the second SIM card to access the network to the terminal device, and the terminal device can directly establish a network connection with the network device according to the configuration information without performing random access of the second SIM card. The input process can reduce the delay in establishing a network connection, thereby improving transmission performance.

In a possible implementation manner, the configuration information includes a cell radio network temporary identifier C-RNTI and radio resource information of the second SIM card.

In a possible implementation manner, when the second SIM card is in an idle state, the method further includes: the network device receiving a second RRC message sent by the terminal device, the second RRC message carrying A network connection establishment request, where the network connection establishment request is used to request establishment of a network connection between the second SIM card and the network device.

In a possible implementation manner, the obtaining, by the network device, configuration information of accessing the network by the second SIM card of the terminal device includes: generating the configuration information by the network device according to the network connection establishment request.

In a possible implementation manner, when the second SIM card is in the deactivated state, the method further includes: the network device receiving a second RRC message sent by the terminal device, the second RRC message Carrying a network connection recovery request, where the network connection recovery request is used to request recovery of the network connection between the second SIM card and the network device.

In a possible implementation manner, the obtaining, by the network device, configuration information of accessing the network by the second SIM card of the terminal device includes: generating, by the network device, the configuration information according to the network connection restoration request.

In a possible implementation manner, the method further includes: disconnecting, by the network device, a network connection with the first SIM card.

Optionally, the network device may disconnect the network connection with the first SIM card in various ways, which is not limited in this embodiment of the present application.

In a possible implementation manner, the network device may release the network connection with the first SIM card. That is to say, the first SIM card is switched from the connected state to the idle state.

In another possible implementation manner, the network device may save the context information of the first SIM card, and suspend the network connection with the first SIM card. That is to say, the first SIM card is switched from the connected state to the deactivated state.

In yet another possible implementation manner, the network device may receive first indication information sent by the terminal device, where the first indication information is used to indicate disconnection between the first SIM card and the network device. The disconnection mode of the network connection between them, the disconnection mode includes suspension or release; the network device disconnects the network with the first SIM card according to the disconnection mode indicated by the first indication information connect.

In a possible implementation manner, the method further includes: the network device sending a third RRC message to the terminal device, where the third RRC message is used to indicate disconnection with the first SIM card network connection.

Optionally, the network device may send the third RRC message to the terminal device in multiple ways, which is not limited in this embodiment of the present application.

In a first possible implementation manner, the network device may send a third RRC message to the terminal device through the network connection with the first SIM card, where the third RRC message is used to indicate disconnection Open a network connection with the first SIM card.

In a second possible implementation manner, the network device may send a third RRC message to the terminal device through the network connection with the second SIM card, where the third RRC message is used to indicate the disconnection Open a network connection with the first SIM card.

In a third possible implementation manner, the first RRC message is also used to indicate disconnection of the network connection with the first SIM card.

That is to say, the third RRC message is the same message as the first RRC message, which can reduce signaling overhead.

In the third aspect, the embodiment of the present application also provides a method for establishing a network connection, the method is applicable to a communication system, the communication system includes a terminal device and a network device, and the terminal supports a first subscriber identity module SIM card and a second SIM card , and there is a network connection between the first SIM card and the network device, the method includes: the network device acquires configuration information of the second SIM card accessing the network; the network device sends the first radio resource control to the terminal device RRC message, the first RRC message carries the configuration information; the terminal device receives the first RRC message sent by the network device; the terminal device establishes a network connection with the network device according to the configuration information.

In a possible implementation manner, the configuration information includes the cell radio network temporary identifier C-RNTI and radio resource information of the second SIM card.

In a possible implementation manner, the method further includes: the terminal device sending a second RRC message to the network device, where the second RRC message carries a network connection establishment request, and the network connection establishment request is used to request establishment of the second The network connection between the SIM card and the network device.

In a possible implementation manner, the terminal device sends the second RRC message to the network device, including: when the second SIM card is in an idle state and the second SIM card needs to initiate a service, the terminal device sends the The network device sends the second RRC message.

In a possible implementation manner, the network device acquiring configuration information of the second SIM card accessing the network includes: the network device generating the configuration information according to the network connection establishment request.

In a possible implementation manner, the method further includes: the terminal device sending a second RRC message to the network device, where the second RRC message carries a network connection recovery request, and the network connection recovery request is used to request recovery of the second The network connection between the SIM card and the network device.

In a possible implementation manner, the terminal device sends the second RRC message to the network device, including: when the second SIM card is in the deactivated state and the second SIM card needs to initiate a service, the terminal device sends The network device sends the second RRC message.

In a possible implementation manner, the obtaining, by the network device, configuration information of accessing the network by the second SIM card includes: generating, by the network device, the configuration information according to the network connection restoration request.

In a possible implementation manner, the method further includes: disconnecting, by the network device, the network connection with the first SIM card.

In a possible implementation manner, the second RRC message further carries first indication information, where the first indication information is used to indicate a disconnection mode for disconnecting the network connection between the first SIM card and the network device, The disconnection method includes suspension or release, and the network device disconnects the network connection with the first SIM card, including: disconnecting the network device from the second SIM card according to the disconnection method indicated by the first indication information. A network connection between a SIM card.

In a possible implementation manner, the method further includes: the network device sends a third RRC message to the terminal device through the network connection with the first SIM card, where the third RRC message is used to indicate that the disconnection Open a network connection with the first SIM card.

In a possible implementation manner, the first RRC message is also used to indicate disconnection of the network connection with the first SIM card.

In a possible implementation manner, the method further includes: the network device sends a third RRC message to the terminal device through the network connection with the second SIM card, where the third RRC message is used to indicate disconnection A network connection with the first SIM card.

In a fourth aspect, an embodiment of the present application further provides an apparatus for establishing a network connection, and the apparatus includes a unit or module configured to execute the method in the foregoing aspects or any possible implementation thereof.

In the fifth aspect, the embodiment of the present application also provides a device for establishing a network connection, the device includes a processor and a memory, and instructions are stored in the memory, and when the processor executes the instructions, the device executes the above-mentioned aspects or its The method in any possible implementation.

In the sixth aspect, the embodiment of the present application also provides a computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is executed by a communication device, the above-mentioned aspects or any possible The method in the implementation.

In the seventh aspect, the embodiment of the present application also provides a computer program product, the computer program product contains instructions, and when the instructions are run on a computer or a processor, the computer or the processor is made to realize the above-mentioned aspects or any of them. The method in the possible implementation.

In the eighth aspect, the embodiment of the present application also provides a chip device, the chip device includes a processor and a communication interface, the processor is used to call and execute instructions from the communication interface, and when the processor executes the instructions, the above-mentioned The method in any aspect or any possible implementation thereof.

Description of drawings

Fig. 1 provides the schematic diagram of the structure of the communication system of the embodiment of the present application;

FIG. 2 provides another schematic diagram of the architecture of the communication system of the embodiment of the present application;

FIG. 3 provides a schematic diagram of a passive mode of a dual-subscriber identification module (SIM) card terminal device according to an embodiment of the present application;

FIG. 4 provides a schematic diagram of a dual SIM dual standby (dual SIM dualstandy, DSDS) mode of a dual SIM card terminal device according to an embodiment of the present application;

FIG. 5 provides a schematic diagram of a dual SIM dual active (DSDA) mode of a dual SIM card terminal device according to an embodiment of the present application;

FIG. 6 provides a schematic flowchart of a method 100 for establishing a network connection according to an embodiment of the present application;

Fig. 7 is a schematic diagram of a display interface provided by an embodiment of the present application;

Fig. 8 is a schematic diagram of another display interface provided by the embodiment of the present application;

FIG. 9 provides a schematic block diagram of an apparatus 200 for establishing a network connection according to an embodiment of the present application;

FIG. 10 provides a schematic block diagram of an apparatus 300 for establishing a network connection according to an embodiment of the present application;

FIG. 11 provides a schematic block diagram of a terminal device 400 according to an embodiment of the present application.

detailed description

The technical solution in this application will be described below with reference to the accompanying drawings.

It should be noted that the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: global system for mobile communications (global system for mobile communications, GSM) system, code division multiple access (code division multiple access, CDMA) system , wideband code division multiple access (WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) ) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), worldwide interconnection microwave access (worldwide interoperability for microwave access, WiMAX) communication system, the fifth generation (5th generation , 5G) system or new radio (new radio, NR), and subsequent evolution communication systems, etc.

It should also be noted that the terminal equipment described in the embodiments of the present application may also be referred to as: user equipment (userequipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), access terminal , subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

Optionally, the terminal device may be a device that provides voice/data connectivity to users, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and the like. At present, examples of some terminals are: mobile phone (mobile phone), tablet computer, notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid Wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, cellular phones, cordless phones, session initiation protocol, SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistant, PDA), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices , a wearable device, a terminal device in a 5G network or a terminal device in a future evolved public land mobile network (PLMN), etc., which are not limited in this embodiment of the present application.

It should be noted that wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc. . A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.

Optionally, the terminal device can also be a terminal device in the Internet of Things (Internet of Things, IoT) system. IoT is an important part of the development of information technology in the future, and its main technical feature is to connect items to the network through communication technology, thereby Realize the intelligent network of man-machine interconnection and object interconnection.

Optionally, if the various terminal devices described above are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), they can be considered as vehicle-mounted terminal devices, and the vehicle-mounted terminal devices are also called vehicle-mounted units (on-board unit, OBU).

It should be noted that the terminal device described in the embodiment of the present application may further include a relay; or, the terminal device described in the embodiment of the present application may be a device capable of performing data communication with a base station.

It should be noted that the access network device described in the embodiments of the present application may be a device used to communicate with terminal devices. The access network device may also be called an access device or a wireless access network device, and may be an LTE The evolved base station (evolved NodeB, eNB or eNodeB) in the system may also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or the access device may be a relay station, an access point, Vehicle-mounted devices, wearable devices, access devices in 5G networks, or network devices in future evolved PLMN networks, etc., can be access points (access points, APs) in WLAN, or new wireless systems (new radio, The gNB in the NR system is not limited in this embodiment.

Optionally, the access network device is a device in the RAN, or in other words, a RAN node that connects the terminal device to the wireless network. For example, as an example and not limitation, as an access network device, for example: gNB, transmission reception point (transmission reception point, TRP), evolved Node B (evolved Node B, eNB), radio network controller (radionetwork controller, RNC) , Node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolvedNodeB, or home Node B, HNB), baseband unit (base band unit, BBU), or wireless fidelity (wirelessfidelity, Wifi) access point (access point, AP), etc. In a network structure, the network device may include a centralized unit (centralized unit, CU) node, or a distributed unit (distributed unit, DU) node, or a RAN device including a CU node and a DU node, or a control plane CU node (CU -CP node) and RAN equipment of user plane CU node (CU-UP node) and DU node.

Optionally, the access network device is used to provide services for the cell, and the terminal device communicates with the access network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be an access network device. The cell corresponding to the network access device (such as a base station) may belong to a macro base station or a base station corresponding to a small cell. The small cell here may include: a metro cell, a micro cell , picocell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.

It should be noted that the core network device described in the embodiments of the present application may be connected to the access network device, so that the terminal device can communicate with the core network device through the access network device. Exemplarily, the core network equipment may include the following network elements or functions:

(1) Access management function (AMF): mainly responsible for access and mobility control, including registration management (registration management, RM) and connection management (connection management, CM), access authentication and access authorization , reachability management and mobility management.

(2) User plane function (user plane function, UPF): mainly provides user plane support, including connection points of PDU sessions and data networks, data packet routing and forwarding, data packet detection and user plane policy enforcement, and QoS processing for the user plane , caching of downlink data packets and triggering of downlink data notifications, etc.

(3) Packet control function (PCF): It is mainly a policy control function, including supporting a unified policy framework to monitor network behavior and providing policy rules for the control plane to execute.

(4) Authentication server function (authentication server function, AUSF): mainly responsible for providing security-related functions, such as: authentication, authentication, etc.

(5) Unified data management (UDM): Responsible for functions related to user authentication, specifically: authentication credential processing, user identity processing, subscription information management, access authorization, etc.

FIG. 1 shows a schematic structural diagram of a communication system according to an embodiment of the present application. As shown in Fig. 1, the communication system includes an access network device, a core network device and a terminal device.

Optionally, the access network device may work in an evolved universal mobile communication system terrestrial radio access (evolved UMTS terrestrial radio access, E-UTRA) system, NR system, next generation communication system or other communication systems. The embodiment does not limit this.

Optionally, the core network device may work in an E-UTRA system, an NR system, a next-generation communication system, or other communication systems, which is not limited in this embodiment of the present application.

It should be noted that in Figure 1, the core network equipment is used as an example in the 5G core network (5GC). The core network equipment and the access network equipment can communicate through the NG interface, and the access network equipment and the terminal equipment can communicate through the Uu interface communication.

Optionally, in this embodiment of the application, one access network device can serve multiple terminal devices, and one core network device can also serve multiple access network devices. Figure 1 only schematically uses one core network device to serve One access network device and one access network device serving one terminal device are used as an example for introduction, but this embodiment of the present application is not limited thereto.

Fig. 2 shows another schematic structural diagram of the communication system according to the embodiment of the present application. As shown in Fig. 2, the communication system includes an access network device 1, an access network device 2, a core network device 1, a core network device 2 and a terminal device.

It should be noted that, in Figure 2, the access network is taken as an example of a radio access network (radio access network, RAN). The core network device and the access network device can communicate through the NG interface, and the access network device and the access network Network devices can communicate through the Xn interface. In addition, the access network device and the terminal device can communicate through the Uu interface.

Optionally, the access network device 1 and the access network device 2 may work in an E-UTRA system, an NR system, a next-generation communication system or other communication systems, which is not limited in this embodiment of the present application.

Optionally, the core network device 1 and the core network device 3 may work in an E-UTRA system, an NR system, a next-generation communication system or other communication systems, which is not limited in this embodiment of the present application.

It should be noted that, the access network device described in FIG. 1 or FIG. 2 may be, for example, a base station. Wherein, the access network equipment corresponds to different equipment in different systems, for example, in the 4G system, it may correspond to eNB, and in the 5G system, it may correspond to the access network equipment in 5G, such as gNB. Similarly, core network devices correspond to different devices in different systems. For example, in a 4G system, they may correspond to a mobility management entity (MME), and in a 5G system, they may correspond to 5G core network devices, such as AMF. Of course, the technical solutions provided by the embodiments of the present application can also be applied to future mobile communication systems, so the access network equipment in Figure 1 or Figure 2 can also correspond to the access network equipment in the future mobile communication system, the core network The equipment can also correspond to the core network equipment in the future mobile communication system. Figure 1 or Figure 2 takes the access network device as a base station as an example. In fact, referring to the introduction above, the access network device may also be a device such as an RSU.

As an example, currently more and more smart phones support inserting two subscriber identity module (subscriber identification module, SIM) cards at the same time, for example, one SIM card is used for private business and the other SIM card is used for work; or, One SIM card is used for data services and the other SIM card is used for voice services. Wherein, the two SIM cards in a mobile phone can belong to the same mobile operator or different mobile operators; they can belong to the same standard (the standard includes NR, LTE, wideband code division multiple access (WCDMA ), time division multiple access (time division multiple access, TDMA) 2000, or GSM, etc.), may also belong to different standards.

According to the different sending and receiving capabilities of the terminal equipment, the terminal equipment with dual SIM cards can have one of the following three modes:

1. Passive mode: Although two SIM cards can be inserted, only one can be used at a time.

For example: Figure 3 shows a schematic diagram of the passive mode. As shown in FIG. 3 , take two SIM cards as USIM1 and USIM2 as an example. At time 1, USIM1 works (or is in the network connection state (connected)), that is, USIM1 can send and receive data, and USIM2 cannot be used at this time; or, at time 2, USIM2 works (or is in the network connection state), also That is, USIM2 can send and receive data, and USIM1 cannot be used at this time.

2. DSDS mode: Two SIM cards share a set of transceivers. In the idle state, the transceiver needs to monitor the paging messages of the two cards. For example, the transceiver may monitor in a time division multiplex (time division multiple, TDM) manner.

For example: Figure 4 shows a schematic diagram of the DSDS mode. As shown in FIG. 4 , take two SIM cards as USIM1 and USIM2 as an example. At time 1, USIM1 is working (or in network connection state), that is, USIM1 can send and receive data, and USIM2 can be in idle state or inactive state (inactive); or, USIM2 is working (or in network connection state), That is, the USIM2 can send and receive data, and the USIM1 can be in an idle state or an inactive state at this time. In this article, the non-activated state may also be referred to as the deactivated state, or the deactivated state, etc.

3. DSDA mode: Two SIM cards use their own transceivers. The two SIM cards can be in the network connection state at the same time, that is, the terminal device can receive and send the data of the two SIM cards at the same time.

For example: Figure 5 shows a schematic diagram of the DSDA mode. As shown in FIG. 5 , take two SIM cards as USIM1 and USIM2 as an example. When the USIM1 is working (or entering the network connection state), that is, when the USIM1 is sending and receiving data, the USIM2 can also work, that is, the USIM2 and the USIM1 can be in the network connection state at the same time.

The above three radio resource control (radio resource control, RRC) states of the terminal device are introduced below. As mentioned above, the three RRC states are: network connection state (connected state), RRC idle state (idle state) and inactive state (inactive state). Wherein, the non-activated state may also be referred to as a deactivated state or a deactivated state.

(1) Network connection state (or, can also be referred to as connection state for short. In this article, "connection state" and "network connection state" are the same concept, and the two terms can be interchanged): the terminal device has established a network connection with the network , data transfer is possible.

(2) RRC idle state (or, can also be referred to as idle state for short. In this article, "idle state" and "RRC idle state" are the same concept, and the two terms can be interchanged): the terminal device has not established a network connection with the network , the base station does not store the context of the terminal device. If the terminal device needs to enter the network connection state from the idle state, it needs to initiate a network connection establishment process.

(3) RRC deactivation state (or, can also be referred to as deactivation state for short. In this article, "deactivation state" and "RRC deactivation state" are the same concept, and the two terms can be interchanged): The network connection state is entered, and then the base station suspends the network connection, but saves the context of the terminal device. If the terminal device needs to enter the connected state again from the deactivated state, it needs to initiate a network connection restoration process (or called a network connection re-establishment process). Compared with the RRC establishment process, the RRC recovery process has shorter delay and less signaling overhead. However, the base station needs to save the context of the terminal device, which will occupy the storage overhead of the base station.

In order to facilitate understanding, this embodiment of the present application only uses a scenario where a terminal device includes two SIM cards as an example for introduction, but in actual applications, a terminal device may support multiple SIM cards, and this embodiment of the present application should not be limited thereto.

FIG. 6 shows a method 100 for establishing a network connection provided by an embodiment of the present application. The method 100 is applied to the communication system as shown in FIG. 1 or FIG. 2 .

It should be noted that the method 100 includes S101-S103.

Optionally, the method 100 may further include S104-S112.

S104. The terminal device determines that the first SIM card is in a connected state, where the terminal device supports the first SIM card and the second SIM card.

It should be noted that the SIM card described in the embodiments of the present application can be understood as a key for the terminal device to access the mobile network. For the convenience of description, the SIM card and its evolution are collectively referred to as the SIM card in the embodiments of the present application.

For example, the SIM card can be an identification card of a global system for mobile communications (GSM) digital mobile phone user, which is used to store the user's identification code and key, and support the authentication of the user by the GSM system.

For another example, the SIM card may also be a universal subscriber identity module (USIM), and may also be called an upgraded SIM card.

It should also be noted that the terminal device can support multiple SIM cards. The SIM is described as an example. It should be understood that the multiple SIM cards may also include other SIM cards or other numbers of SIM cards, which is not limited in this embodiment of the present application.

It should also be noted that the fact that the first SIM card is in a connected state may be understood to mean that there is a network connection between the first SIM card and the network device.

For example: the terminal device may be the terminal device described in FIG. 1 or FIG. 2 , and the network device may be the access network device 1 described in FIG. 1 or FIG. 2 .

S105. The terminal device determines that the second SIM card is in a disconnected state, and the disconnected state includes an idle state or a deactivated state.

It should be noted that the fact that the second SIM card is in a non-connected state may also be understood to mean that there is no network connection between the second SIM card and the network device.

S106. The terminal device determines that the second SIM card needs to initiate a service.

Optionally, the terminal device may determine that the second SIM card needs to initiate a service in various ways, which is not limited in this embodiment of the present application.

In a first possible implementation manner, the terminal device may determine that the second SIM card needs to initiate a service according to a user operation.

For example, when the terminal device detects that the user makes a call through the second SIM card, it determines that the second SIM card needs to initiate a service.

In a second possible implementation manner, the terminal device may receive an RRC message sent by the network device, where the RRC message carries a paging message for paging the second SIM card, and the terminal device may According to the paging message, it is determined that the second SIM card needs to initiate a service.

It should be noted that, according to the current states of the first SIM card and the second SIM card, this embodiment of the present application may be applicable to the following two application scenarios.

Application Scenario 1: The first SIM card is in a connected state, the second SIM card is in an idle state, and the second SIM card needs to initiate a service.

Application Scenario 2: The first SIM card is in a connected state, the second SIM card is in a deactivated state, and the second SIM card needs to initiate a service.

For example: taking the terminal device as a mobile phone as an example, refer to the graphical user interface (graphical user interface, GUI) shown in Figure 7, the GUI is the interface of the browser of the mobile phone, and the browser is connected to the Internet through the first SIM card . When the mobile phone detects an incoming call from the second SIM card, it determines that the second SIM card needs to initiate a service, and answers the incoming call through the second SIM card.

Another example: taking the terminal device as a mobile phone as an example, refer to the GUI shown in FIG. 8 , the GUI is the chat software interface of the mobile phone, and the chat software is connected to the Internet through the first SIM card. When the mobile phone detects that the user clicks on the phone number in the chat software interface, the interface pops up a sub-interface, and the sub-interface is a SIM card option interface. When the mobile phone detects that the user clicks on the option of the second SIM card , it is determined that the second SIM card needs to initiate a service, and dialing is performed through the second SIM card.

Other steps in the method 100 will be introduced below by taking application scenario 1 and application scenario 2 as examples respectively.

(1) In the case of application scenario 1, the method 100 also includes S107-S108.

S107. When the first SIM card is in the connected state, the second SIM card is in the idle state, and the second SIM card needs to initiate a service, the terminal device generates a network connection establishment request, and the network connection establishment The request is used to request to establish a network connection between the second SIM card and the network device.

In a possible implementation manner, the network connection establishment request may carry a temporary mobile subscriber identity (serving-temporary mobile subscriber identity, S-TMSI) of the second SIM card.

S108. The terminal device sends a second RRC message to the network device, where the second RRC message carries the network connection establishment request; correspondingly, the network device receives the second RRC message sent by the terminal device information.

(2) In the case of application scenario 2, the method 100 also includes S109-S110.

S109. When the first SIM card is in the connected state, the second SIM card is in the deactivated state, and the second SIM card needs to initiate a service, the terminal device generates a network connection restoration request, and the network connection The recovery request is used to request recovery of the network connection between the second SIM card and the network device.

In a possible implementation manner, the network connection establishment request may carry the restoration identifier of the second SIM card.

It should be noted that the recovery identifier is allocated by the network device to the second SIM card when the second SIM card of the terminal device enters the deactivated state from the connected state, and is used for the second SIM card. The SIM card recovers from the deactivated state to the connected state.

S110. The terminal device sends a second RRC message to the network device, where the second RRC message carries the network connection recovery request; correspondingly, the network device receives the second RRC sent by the terminal device information.

S101. The network device acquires configuration information of the second SIM card accessing a network.

Optionally, the network device may obtain the configuration information in various situations, which is not limited in this embodiment of the present application.

In a possible implementation manner, in the case of application scenario 1, the network device may determine that the terminal device needs to switch from the first SIM card to the second SIM card, and obtain the configuration information.

For example: the network device may determine that the terminal device needs to switch from the first SIM card to the second SIM card according to the S-TMSI of the second SIM card carried in the network connection establishment request, And get the configuration information.

In another possible implementation, in the second application scenario, the network device may determine that the terminal device needs to switch from the first SIM card to the the second SIM card, and acquire the configuration information.

For example: the network device may determine that the terminal device needs to switch from the first SIM card to the second SIM card according to the recovery identifier of the second SIM card carried in the network connection recovery request, and Get the configuration information.

It should be noted that the switching of the terminal device from the first SIM card to the second SIM card can be understood as the switching of the first SIM card from the connected state to the non-connected state, and the switching of the second SIM card from the The unconnected state is switched to a connected state.

Optionally, the network device may obtain the configuration information in multiple ways, which is not limited in this embodiment of the present application.

In a first possible implementation manner, the network device may allocate the configuration information to the second SIM card by itself.

For example: the network device may allocate the configuration information to the second SIM card according to the S-TMSI carried in the network connection establishment request.

For another example: the network device may allocate the configuration information to the second SIM card according to the restoration identifier carried in the network establishment restoration request.

In a second possible implementation manner, the network connection may receive the configuration information sent by other network devices.

For example: taking the network device as a base station as an example, the network device may send a context request message of the terminal device to the core network device, the context request message carries the S-TMSI of the second SIM card, and receives The configuration information sent by the core network device according to the S-TMSI.

Another example: taking the network device as a base station as an example, the network device may send a context request message of the terminal device to other base stations, the context request message carries the S-TMSI of the second SIM card, and receives The configuration information sent by the other base station according to the S-TMSI.

In a possible implementation manner, the configuration information may include a cell-radio network temporary identifier (cell-radio network temporary identifier, C-RNTI) and radio resource information of the second SIM card.

For example, the radio resource information may be a radio bearer configuration (radio bearer config) for establishing a signaling radio bearer (signalling radio bearers, SRB).

S102. The network device sends a first RRC message to the terminal device, where the first RRC message carries the configuration information; correspondingly, the terminal device receives the first RRC message sent by the network device.

S103. The terminal device establishes a network connection with the network device according to the configuration information.

It should be noted that the terminal device may establish a network connection with the network device according to the configuration information by adopting an existing procedure for establishing a network connection. To avoid repetition, details are not described here.

It should also be noted that, in the case of application scenario 1, the terminal device may establish a network connection between the second SIM card and the network device; or in the case of application scenario 2, the terminal device The suspended network connection between the second SIM card and the network device may be resumed.

S111. The network device disconnects the network connection with the first SIM card.

Optionally, the network device may disconnect the network connection with the first SIM card in various ways, which is not limited in this embodiment of the present application.

In a possible implementation manner, the network device may release the network connection with the first SIM card. That is to say, the first SIM card is switched from the connected state to the idle state.

In another possible implementation manner, the network device may save the context information of the first SIM card, and suspend the network connection with the first SIM card. That is to say, the first SIM card is switched from the connected state to the deactivated state.

In yet another possible implementation manner, the network device may receive first indication information sent by the terminal device, where the first indication information is used to indicate disconnection between the first SIM card and the network device. The disconnection mode of the network connection between them, the disconnection mode includes suspension or release; the network device disconnects the network with the first SIM card according to the disconnection mode indicated by the first indication information connect.

Optionally, the terminal device may send the first indication information to the network device in various ways, which is not limited in this embodiment of the present application.

In a possible implementation manner, the terminal device may send a fourth RRC message to the network device, where the fourth RRC message carries the first indication information.

In another possible implementation manner, the first indication information may be carried in the second RRC message.

It should be noted that the terminal device carries the first indication information in the second RRC message, which can reduce signaling overhead.

S112. The network device sends a third RRC message to the terminal device, where the third RRC message is used to indicate disconnection of the network connection with the first SIM card; correspondingly, the terminal device receives the The third RRC message sent by the network device.

It should be noted that, if the S111 is executed before the S112, the third RRC message is used to indicate that the network connection with the first SIM card has been disconnected; if the S111 is executed before the S112 After execution, the third RRC message is used to indicate that the network connection with the first SIM card is about to be disconnected.

Optionally, the network device may send the third RRC message to the terminal device in multiple ways, which is not limited in this embodiment of the present application.

In a first possible implementation manner, S112 is performed before S103, that is, the network connection between the second SIM card and the network device is not established, then the network device can pass the second SIM card A network connection between a SIM card and the network device sends the third RRC message to the terminal device. Correspondingly, S111 is executed after S112.

Optionally, the third RRC message and the first RRC message may be the same message, that is, the first RRC message is used to indicate disconnection of the network connection with the first SIM card, and the The first RRC message carries the configuration information. That is to say, S102 and S112 can be implemented through one step.

It should be noted that the terminal device indicates disconnection of the network connection with the first SIM card through the first RRC message, which can reduce signaling overhead.

In a second possible implementation, S112 is performed after S103, that is, the network connection between the second SIM card and the network device has been established, and the network device can The network connection between the second SIM card and the network device sends the third RRC message to the terminal device. Correspondingly, the execution order of S111 and S112 is not in particular order.

Using the method for establishing a network connection provided by the embodiment of the present application, when the first SIM card of the terminal device is in the connected state and the second SIM card is in the unconnected state, and the second SIM card needs to initiate a service, the network device can Send the configuration information for the second SIM card to access the network to the terminal device, and the terminal device can directly establish a network connection with the network device according to the configuration information without performing random access of the second SIM card. The input process can reduce the delay in establishing a network connection, thereby improving transmission performance.

The method 100 for establishing a network connection according to the embodiment of the present application is described above with reference to FIG. 6 to FIG. 8 , and the apparatus 200 for establishing a network connection for performing the above method 100 will be described below with reference to FIG. 9 to FIG. 11 .

It should be noted that the apparatus 200 may be the terminal device or the network device described in the embodiment of the method 100 above, which is not limited in this embodiment of the present application.

It can be understood that, in order to realize the above functions, the apparatus 200 includes hardware and/or software modules corresponding to each function. Combining the algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions in combination with the embodiments for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

In this embodiment, the functional modules of the apparatus 200 may be divided according to the above method examples. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above integrated modules may be implemented in the form of hardware. It should be noted that the division of modules in this embodiment is schematic, and is only a logical function division, and there may be other division methods in actual implementation.

In the case of dividing each functional module corresponding to each function, FIG. 9 shows a schematic diagram of a possible composition of the terminal equipment and network equipment involved in the above embodiment. As shown in FIG. 9, the apparatus 200 may include: unit 210 and processing unit 220.

Wherein, the processing unit 220 may control the transceiving unit 210 to implement the method described in the embodiment of the method 100 above, and/or other processes used in the technology described herein.

It should be noted that all relevant content of the steps involved in the above method embodiments can be referred to the function description of the corresponding function module, and will not be repeated here.

The apparatus 200 provided in this embodiment is used to execute the above-mentioned method 100, so the same effect as the above-mentioned implementation method can be achieved.

In case of an integrated unit, the apparatus 200 may include a processing unit, a storage unit and a communication unit. Wherein, the processing unit may be used to control and manage the actions of the apparatus 200, for example, may be used to support the apparatus 200 to execute the steps performed by the above-mentioned units. The storage unit can be used to support the device 200 to execute stored program codes and data, and the like. The communication unit may be used to support communication of the apparatus 200 with other devices.

Wherein, the processing unit may be a processor or a controller. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (digital signal processing, DSP) and a microprocessor, and the like. The storage unit may be a memory. Specifically, the communication unit may be a device that interacts with other electronic devices, such as a radio frequency circuit, a Bluetooth chip, and a Wi-Fi chip.

In a possible implementation, the apparatus 200 involved in this embodiment may be an apparatus 300 for establishing a network connection with the structure shown in FIG. In a schematic structural diagram, the apparatus 300 includes a processor 310 and a transceiver 320, and the processor 310 and the transceiver 320 communicate with each other through an internal connection path. Related functions implemented by the processing unit 220 in FIG. 9 may be implemented by the processor 310 , and related functions implemented by the transceiver unit 210 may be implemented by the processor 310 controlling the transceiver 320 .

Optionally, the apparatus 300 may further include a memory 330, and the processor 310, the transceiver 320, and the memory 330 communicate with each other through an internal connection path. The relevant functions implemented by the storage unit described in FIG. 9 may be implemented by the memory 330 .

FIG. 11 shows a schematic structural diagram of a terminal device 400 . As shown in FIG. 11 , the terminal device 400 may include a processor 410, an external memory interface 420, an internal memory 421, a universal serial bus (universal serial bus, USB) interface 430, a charging management module 440, a power management module 441, and a battery 442 , antenna 1, antenna 2, mobile communication module 450, wireless communication module 460, audio module 470, speaker 470A, receiver 470B, microphone 470C, earphone jack 470D, sensor module 480, button 490, motor 491, indicator 492, camera 493 , a display screen 494, and a subscriber identification module (subscriber identification module, SIM) card interface 495, etc.

It can be understood that, the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the terminal device 400 . In other embodiments of the present application, the terminal device 400 may include more or fewer components than shown in the figure, or combine certain components, or separate certain components, or arrange different components. The illustrated components can be realized in hardware, software or a combination of software and hardware.

The processor 410 may include one or more processing units, for example: the processor 410 may include an application processor (application processor, AP), a modem processor, a graphics processing unit (graphics processing unit, GPU), an image signal processor ( image signal processor (ISP), controller, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural network processor (neural-network processing unit, NPU), etc. Wherein, different processing units may be independent components, or may be integrated in one or more processors. In some embodiments, the terminal device 400 may also include one or more processors 410 . Wherein, the controller can generate an operation control signal according to the instruction operation code and the timing signal, and complete the control of fetching and executing the instruction. In some other embodiments, a memory may also be set in the processor 410 for storing instructions and data. Exemplarily, the memory in the processor 410 may be a cache memory. The memory may hold instructions or data that the processor 410 has just used or recycled. If the processor 410 needs to use the instruction or data again, it can be called directly from the memory. In this way, repeated access is avoided, and the waiting time of the processor 410 is reduced, thereby improving the efficiency of the terminal 400 in processing data or executing instructions.

In some embodiments, processor 410 may include one or more interfaces. The interface may include inter-integrated circuit (I2C) interface, inter-integrated circuit sound (I2S) interface, pulse code modulation (pulse code modulation, PCM) interface, universal asynchronous transmitter (universal asynchronous receiver/transmitter, UART) interface, mobile industry processor interface (mobile industry processor interface, MIPI), general-purpose input-output (general-purpose input/output, GPIO) interface, SIM card interface, and/or USB interface, etc. Wherein, the USB interface 430 is an interface conforming to the USB standard specification, specifically, it may be a Mini USB interface, a Micro USB interface, a USB Type C interface, and the like. The USB interface 430 can be used to connect a charger to charge the terminal 400, and can also be used to transmit data between the terminal device 400 and peripheral devices. The USB interface 430 can also be used to connect earphones to play audio through the earphones.

It can be understood that the interface connection relationship between the modules shown in the embodiment of the present application is only a schematic illustration, and does not constitute a structural limitation of the terminal device 400 . In other embodiments of the present application, the terminal device 400 may also adopt different interface connection modes in the foregoing embodiments, or a combination of multiple interface connection modes.

The charging management module 440 is configured to receive charging input from the charger. Wherein, the charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 440 can receive the charging input of the wired charger through the USB interface 430 . In some wireless charging embodiments, the charging management module 440 may receive wireless charging input through the wireless charging coil of the terminal 400 . While the charging management module 440 is charging the battery 442 , it can also supply power to the terminal through the power management module 441 .

The power management module 441 is used for connecting the battery 442 , the charging management module 440 and the processor 410 . The power management module 441 receives the input from the battery 442 and/or the charging management module 440 to provide power for the processor 410 , internal memory 421 , external memory, display screen 494 , camera 493 , and wireless communication module 460 . The power management module 441 can also be used to monitor parameters such as battery capacity, battery cycle times, and battery health status (leakage, impedance). In some other embodiments, the power management module 441 may also be set in the processor 410 . In some other embodiments, the power management module 441 and the charging management module 440 can also be set in the same device.

The wireless communication function of the terminal device 400 may be implemented by the antenna 1, the antenna 2, the mobile communication module 440, the wireless communication module 460, a modem processor, a baseband processor, and the like.

Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in terminal device 400 can be used to cover single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: Antenna 1 can 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 450 can provide wireless communication solutions including 2G/3G/4G/5G applied on the terminal device 400 . The mobile communication module 450 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA) and the like. The mobile communication module 450 can receive electromagnetic waves through the antenna 1, filter and amplify the received electromagnetic waves, and send them to the modem processor for demodulation. The mobile communication module 450 can also amplify the signal modulated by the modem processor, convert it into electromagnetic wave and radiate it through the antenna 1 . In some embodiments, at least part of the functional modules of the mobile communication module 450 may be set in the processor 410 . In some embodiments, at least part of the functional modules of the mobile communication module 450 and at least part of the modules of the processor 410 may be set in the same device.

The wireless communication module 460 can provide applications on the terminal 400 including wireless local area networks (wireless local area networks, WLAN) (such as wireless fidelity (wireless fidelity, Wi-Fi) network), bluetooth (bluetooth, BT), global navigation satellite system (global navigation satellite system) Navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions.

Optionally, the wireless communication module 460 may be one or more devices integrating at least one communication processing module.

The wireless communication module 460 receives electromagnetic waves via the antenna 2 , frequency-modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 410 . The wireless communication module 460 can also receive the signal to be transmitted from the processor 410 , frequency-modulate it, amplify it, and convert it into electromagnetic waves through the antenna 2 for radiation.

The terminal 400 implements a display function through a GPU, a display screen 494, an application processor, and the like. The GPU is a microprocessor for image processing, and is connected to the display screen 494 and the application processor. GPUs are used to perform mathematical and geometric calculations for graphics rendering. Processor 410 may include one or more GPUs that execute program instructions to generate or alter display information.

The display screen 494 is used to display images, videos and the like. Display 494 includes a display panel. The display panel may be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (active-matrix organic light emitting diode). AMOLED), flexible light-emitting diode (flex light-emitting diode, FLED), Miniled, MicroLed, Micro-oLed, quantum dot light-emitting diodes (quantum dotlight emitting diodes, QLED), etc. In some embodiments, the terminal device 400 may include one or more display screens 494 .

In some embodiments of the present application, when materials such as OLED, AMOLED, and FLED are used for the display panel, the display screen 494 in FIG. 11 above can be bent. Here, the above-mentioned display screen 494 being bendable means that the display screen 494 can be bent to any angle at any position, and can be kept at this angle. For example, the display screen 494 can be folded in half from the middle. It can also be folded in half from the middle up and down. In this application, a display screen that can be bent is called a foldable display screen. Wherein, the touch display screen may be one screen, or may be a display screen formed by splicing together multiple screens, which is not limited here.

The display screen 494 of the terminal device 400 may be a flexible screen. At present, the flexible screen has attracted much attention due to its unique characteristics and great potential. Compared with traditional screens, flexible screens have the characteristics of strong flexibility and bendability, and can provide users with new interaction methods based on bendable characteristics, which can meet more needs of users for terminals. For a terminal configured with a foldable display, the foldable display on the terminal can be switched between a small screen in a folded state and a large screen in an unfolded state at any time. Therefore, users use the split-screen function more and more frequently on terminals equipped with foldable display screens.

The terminal is hungry 400 can realize the shooting function through ISP, camera 493, video codec, GPU, display screen 494 and application processor.

The ISP is used to process data fed back by the camera 493 . For example, when taking a picture, open the shutter, the light is transmitted to the photosensitive element of the camera through the lens, and the light signal is converted into an electrical signal, and the photosensitive element of the camera transmits the electrical signal to the ISP for processing, and converts it into an image visible to the naked eye. ISP can also perform algorithm optimization on image noise, brightness, and skin color. ISP can also optimize the exposure, color temperature and other parameters of the shooting scene. In some embodiments, the ISP may be located in the camera 493 .

Camera 493 is used to capture still images or video. The object generates an optical image through the lens and projects it to the photosensitive element. The photosensitive element may be a charge coupled device (charge coupled device, CCD) or a complementary metal-oxide-semiconductor (complementary metal-oxide-semiconductor, CMOS) phototransistor. The photosensitive element converts the light signal into an electrical signal, and then transmits the electrical signal to the ISP to convert it into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. DSP converts digital image signals into standard RGB, YUV and other image signals. In some embodiments, the terminal device 400 may include one or more cameras 493 .

Digital signal processors are used to process digital signals. In addition to digital image signals, they can also process other digital signals. For example, when the terminal device 400 selects a frequency point, the digital signal processor is used to perform Fourier transform on the energy of the frequency point.

Video codecs are used to compress or decompress digital video. The terminal device 400 may support one or more video codecs. In this way, the terminal device 400 can play or record videos in various encoding formats, for example: moving picture experts group (moving picture experts group, MPEG) 1, MPEG2, MPEG3, MPEG4, etc.

NPU is a neural-network (NN) computing processor. By referring to the structure of biological neural networks, such as the transfer of business functions between neurons in the human brain, it can quickly process input information and continuously learn by itself. Applications such as intelligent cognition of the terminal device 400 can be implemented through the NPU, such as image recognition, face recognition, speech recognition, text understanding, and the like.

The external memory interface 420 may be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the terminal device 400 . The external memory card communicates with the processor 410 through the external memory interface 420 to implement a data storage function. Such as saving music, video and other files in the external memory card.

Internal memory 421 may be used to store one or more computer programs including instructions. The processor 410 may run the above-mentioned instructions stored in the internal memory 421, so that the terminal 400 executes the screen-off display method provided in some embodiments of the present application, as well as various applications and data processing. The internal memory 421 may include an area for storing programs and an area for storing data. Wherein, the stored program area can store an operating system; the stored program area can also store one or more applications (such as a gallery, contacts, etc.) and the like. The storage data area can store data created during the use of the terminal device 400 (such as photos, contacts, etc.) and the like. In addition, the internal memory 421 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more disk storage components, flash memory components, universal flash storage (universal flash storage, UFS) and the like. In some embodiments, the processor 410 may execute the instructions stored in the internal memory 421 and/or the instructions stored in the memory provided in the processor 410, so that the terminal device 400 executes the instructions provided in the embodiments of the present application. A method for off-screen display, and other applications and data processing. The terminal device 400 may implement an audio function through an audio module 470, a speaker 470A, a receiver 470B, a microphone 470C, an earphone interface 470D, and an application processor. Such as music playback, recording, etc.

The sensor module 480 may include a pressure sensor 480A, a gyro sensor 480B, an air pressure sensor 480C, a magnetic sensor 480D, an acceleration sensor 480E, a distance sensor 480F, a proximity light sensor 480G, a fingerprint sensor 480H, a temperature sensor 480J, a touch sensor 480K, an ambient light sensor 480L, bone conduction sensor 480M, etc.

This embodiment also provides a computer storage medium, where computer instructions are stored in the computer storage medium, and when the computer instructions are run on the electronic device, the electronic device executes the above-mentioned related method steps to realize the establishment of a network connection in the above-mentioned embodiment. method.

This embodiment also provides a computer program product, which, when running on a computer, causes the computer to execute the above related steps, so as to implement the method for establishing a network connection in the above embodiment.

In addition, an embodiment of the present application also provides a device, which may specifically be a chip, a component or a module, and the device may include a connected processor and a memory; wherein the memory is used to store computer-executable instructions, and when the device is running, The processor can execute the computer-executable instructions stored in the memory, so that the chip executes the method for establishing a network connection in the above method embodiments.

Wherein, the network device, terminal device, computer storage medium, computer program product or chip provided in this embodiment are all used to execute the corresponding method provided above, therefore, the beneficial effects it can achieve can refer to the above provided The beneficial effects of the corresponding method will not be repeated here.

Optionally, the method for establishing a network connection provided in this application may include the following optional embodiments.

Embodiment 1: A method for establishing a network connection, characterized in that the method is applicable to a terminal device, the terminal device supports a first SIM card and a second SIM card, and the connection between the first SIM card and the network device There is a network connection, the method includes: the terminal device receives a first RRC message sent by the network device, the first RRC message carries configuration information for the second SIM card to access the network; the terminal device according to The configuration information establishes a network connection with the network device.

Embodiment 2: The method according to Embodiment 1, wherein the configuration information includes the cell radio network temporary identifier C-RNTI and radio resource information of the second SIM card.

Embodiment 3: according to the method described in Embodiment 1 or Embodiment 2, the method further includes: the terminal device sends a second RRC message to the network device, and the second RRC message carries the network A connection establishment request, where the network connection establishment request is used to request establishment of a network connection between the second SIM card and the network device.

Embodiment 4: The method according to Embodiment 3, wherein the terminal device sends a second RRC message to the network device, including: when the second SIM card is in an idle state, and the second When the SIM card needs to initiate a service, the terminal device sends the second RRC message to the network device.

Embodiment five: according to the method described in embodiment one or embodiment two, it is characterized in that the method also includes:

The terminal device sends a second RRC message to the network device, the second RRC message carries a network connection recovery request, and the network connection recovery request is used to request recovery of the connection between the second SIM card and the network device network connection.

Embodiment 6: The method according to Embodiment 5, wherein the terminal device uses the first SIM card to send a second RRC message to the network device, including: when the second SIM card is in In a deactivated state, and the second SIM card needs to initiate a service, the terminal device sends the second RRC message to the network device.

Embodiment 7: The method according to any one of Embodiments 3 to 6, wherein the second RRC message also carries first indication information, and the first indication information is used to indicate disconnection of the A manner of disconnecting the network connection between the first SIM card and the network device, the manner of disconnecting includes suspending or releasing.

Embodiment 8: The method according to any one of Embodiment 1 to Embodiment 7, wherein the method further includes: the terminal device passes through the network between the first SIM card and the network device Connecting, receiving a third RRC message sent by the network device, where the third RRC message is used to indicate disconnection of the network connection with the first SIM card.

Embodiment 9: The method according to any one of Embodiments 1 to 7, wherein the first RRC message is also used to indicate disconnection of the network connection with the first SIM card.

Embodiment 10: The method according to any one of Embodiments 1 to 7, wherein the method further includes: the terminal device passes through the network between the second SIM card and the network device Connecting, receiving a third RRC message sent by the network device, where the third RRC message is used to indicate disconnection of the network connection with the first SIM card.

Embodiment 11: A method for establishing a network connection, characterized in that it includes: the network device obtains configuration information for the second SIM card of the terminal device to access the network, wherein the terminal device supports the first SIM and the second SIM card. Two SIM cards, and there is a network connection between the first SIM card and the network device; the network device sends a first RRC message to the terminal device, and the first RRC message carries the configuration information.

Embodiment 12: The method according to Embodiment 11, wherein the configuration information includes the cell radio network temporary identifier C-RNTI and radio resource information of the second SIM card.

Embodiment 13: The method according to Embodiment 11 or Embodiment 12, wherein when the second SIM card is in an idle state, the method further includes: the network device receiving the terminal A second RRC message sent by the device, where the second RRC message carries a network connection establishment request, and the network connection establishment request is used to request establishment of a network connection between the second SIM card and the network device.

Embodiment 14: according to the method described in Embodiment 13, it is characterized in that the network device obtains the configuration information of the second SIM card of the terminal device to access the network, including: the network device establishes the network connection according to the network configuration information. request to generate the configuration information.

Embodiment 15: According to the method described in Embodiment 11 or Embodiment 12, when the second SIM card is in a deactivated state, the method further includes: the network device receiving the A second RRC message sent by the terminal device, where the second RRC message carries a network connection restoration request, and the network connection restoration request is used to request restoration of the network connection between the second SIM card and the network device.

Embodiment 16: The method according to Embodiment 15, wherein the network device obtains the configuration information of accessing the network by the second SIM card of the terminal device, including: the network device recovers according to the network connection request to generate the configuration information.

Embodiment 17: The method according to any one of Embodiment 11 to Embodiment 16, wherein the method further includes: disconnecting the network device from the first SIM card Internet connection.

Embodiment 18: The method according to Embodiment 17, wherein the second RRC message also carries first indication information, and the first indication information is used to indicate disconnection of the first SIM card from the The disconnection method of the network connection between the network devices, the disconnection method includes suspending or releasing, and the network device disconnects the network connection with the first SIM card, including: the network device Disconnect the network connection with the first SIM card according to the disconnection manner indicated by the first indication information.

Embodiment 19: The method according to any one of Embodiment 11 to Embodiment 18, characterized in that the method further includes: the network device communicates with the first SIM card through the network Connecting, sending a third RRC message to the terminal device, where the third RRC message is used to indicate disconnection of the network connection with the first SIM card.

Embodiment 20: The method according to any one of Embodiment 11 to Embodiment 18, wherein the first RRC message is also used to indicate disconnection with the first SIM card Internet connection.

Embodiment 21: The method according to any one of Embodiment 11 to Embodiment 18, further comprising: the network device communicates with the second SIM card network connection, sending a third RRC message to the terminal device, where the third RRC message is used to indicate disconnection of the network connection with the first SIM card.

Embodiment 22, a method for establishing a network connection, characterized in that the method is applicable to a communication system, the communication system includes a terminal device and a network device, and the terminal supports a first SIM card and a second SIM card , and there is a network connection between the first SIM card and the network device, the method includes: the network device obtains the configuration information of the second SIM card accessing the network; the network device sends the terminal The device sends a first RRC message, the first RRC message carries the configuration information; the terminal device receives the first RRC message sent by the network device; the terminal device communicates with the configuration information according to the configuration information A network device establishes a network connection.

Embodiment 23: the method according to Embodiment 22, wherein the configuration information includes the cell radio network temporary identifier C-RNTI and radio resource information of the second SIM card.

Embodiment 24: The method according to Embodiment 22 or Embodiment 23, further comprising: the terminal device sending a second RRC message to the network device, the The second RRC message carries a network connection establishment request, where the network connection establishment request is used to request establishment of a network connection between the second SIM card and the network device.

Embodiment 25: The method according to Embodiment 24, wherein the terminal device sends a second RRC message to the network device, including: when the second SIM card is in an idle state, and When the second SIM card needs to initiate a service, the terminal device sends the second RRC message to the network device.

Embodiment 26: The method according to Embodiment 24 or Embodiment 25, wherein the network device obtains the configuration information of the second SIM card accessing the network, including: the network The device generates the configuration information according to the network connection establishment request.

Embodiment 27: The method according to Embodiment 22 or Embodiment 23, further comprising: the terminal device sending a second RRC message to the network device, the The second RRC message carries a network connection recovery request, where the network connection recovery request is used to request recovery of the network connection between the second SIM card and the network device.

Embodiment 28: The method according to Embodiment 27, wherein the terminal device sends a second RRC message to the network device, including: when the second SIM card is in a deactivated state, And when the second SIM card needs to initiate a service, the terminal device sends the second RRC message to the network device.

Embodiment 29: The method according to Embodiment 27 or Embodiment 28, wherein the network device obtains the configuration information of the second SIM card accessing the network, including: the network The device generates the configuration information according to the network connection restoration request.

Embodiment 30: The method according to any one of Embodiment 22 to Embodiment 29, further comprising: disconnecting the network device from the first SIM card network connection between.

Embodiment 31: The method according to Embodiment 30, wherein the second RRC message also carries first indication information, and the first indication information is used to indicate disconnection of the first SIM card A method for disconnecting the network connection with the network device, the disconnection method includes suspending or releasing, and the network device disconnects the network connection with the first SIM card, including: the network The device disconnects the network connection with the first SIM card according to the disconnection mode indicated by the first indication information.

Embodiment 32: The method according to any one of Embodiment 22 to Embodiment 31, further comprising: the network device communicates with the first SIM card and send a third RRC message to the terminal device, where the third RRC message is used to indicate the disconnection of the network connection with the first SIM card.

Embodiment 33: The method according to any one of Embodiment 22 to Embodiment 31, wherein the first RRC message is also used to indicate disconnection from the first SIM card network connection between.

Embodiment 34: The method according to any one of Embodiment 22 to Embodiment 31, further comprising: the network device communicates with the second SIM card and send a third RRC message to the terminal device, where the third RRC message is used to indicate disconnection of the network connection with the first SIM card.

It should be understood that, in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read only memory (Read Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, and other media capable of storing program codes.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (23)

1. A method for establishing a network connection, characterized in that the method is applicable to a terminal device, and the terminal device supports a first SIM card and a second SIM card, and the connection between the first SIM card and the network device There is a network connection between, the method includes: The terminal device sends a second RRC message to the network device, the second RRC message carries a network connection establishment request and first indication information, and the network connection establishment request is used to request establishment of the connection between the second SIM card and the The network connection between the network devices, the first indication information is used to indicate the disconnection mode of disconnecting the network connection between the first SIM card and the network device, and the disconnection mode includes suspension or freed; The terminal device receives a first radio resource control RRC message sent by the network device through the network connection between the first SIM card and the network device, and the first RRC message carries the The configuration information of the incoming network; The terminal device establishes a network connection with the network device according to the configuration information. 2. The method according to claim 1, wherein the configuration information includes the cell radio network temporary identifier C-RNTI and radio resource information of the second SIM card. 3. The method according to claim 1, wherein the terminal device sends a second RRC message to the network device, comprising: When the second SIM card is in an idle state and the second SIM card needs to initiate a service, the terminal device sends the second RRC message to the network device. 4. method according to claim 1 or 2, is characterized in that, described method also comprises: The terminal device sends a second RRC message to the network device, the second RRC message carries a network connection recovery request, and the network connection recovery request is used to request recovery of the connection between the second SIM card and the network device network connection. 5. The method according to claim 4, wherein the terminal device sends a second RRC message to the network device with the first SIM card, comprising: When the second SIM card is in a deactivated state and the second SIM card needs to initiate a service, the terminal device sends the second RRC message to the network device. 6. A method for establishing a network connection, comprising: When the second SIM card is in an idle state, the network device receives a second RRC message sent by the terminal device, the second RRC message carries a network connection establishment request and first indication information, and the network connection establishment request is used to request the establishment of the The network connection between the second SIM card and the network device, the first indication information is used to indicate the disconnection method of disconnecting the network connection between the first SIM card and the network device, the disconnection Modes include suspend or release; The network device obtains the configuration information of the second subscriber identity module SIM card of the terminal device to access the network, wherein the terminal device supports the first SIM and the second SIM card, and the first SIM card and the network device There is a network connection between; The network device sends a first radio resource control RRC message to the terminal device through the network connection between the first SIM card and the network device, where the first RRC message carries the configuration information. 7. The method according to claim 6, wherein the configuration information includes the cell radio network temporary identifier (C-RNTI) and radio resource information of the second SIM card. 8. The method according to claim 6, wherein the network device obtains the configuration information of the second SIM card of the terminal device accessing the network, comprising: The network device generates the configuration information according to the network connection establishment request. 9. The method according to claim 6 or 7, wherein when the second SIM card is in a deactivated state, the method further comprises: The network device receives a second RRC message sent by the terminal device, the second RRC message carries a network connection recovery request, and the network connection recovery request is used to request recovery of the connection between the second SIM card and the network device network connection between. 10. The method according to claim 9, wherein the network device obtains the configuration information of the second SIM card of the terminal device accessing the network, comprising: The network device generates the configuration information according to the network connection recovery request. 11. The method according to any one of claims 6 to 10, further comprising: The network device disconnects the network connection with the first SIM card; The network device disconnects the network connection with the first SIM card according to the disconnection mode indicated by the first indication information. 12. A method for establishing a network connection, characterized in that the method is applicable to a communication system, the communication system includes a terminal device and a network device, and the terminal supports a first SIM card and a second SIM card, And there is a network connection between the first SIM card and the network device, the method includes: The terminal device sends a second RRC message to the network device, the second RRC message carries a network connection establishment request and first indication information, and the network connection establishment request is used to request establishment of the connection between the second SIM card and the The network connection between the network devices, the first indication information is used to indicate the disconnection mode of disconnecting the network connection between the first SIM card and the network device, and the disconnection mode includes suspension or freed; The network device obtains the configuration information of the second SIM card accessing the network; The network device sends a first radio resource control RRC message to the terminal device through the network connection between the first SIM card and the network device, where the first RRC message carries the configuration information; receiving, by the terminal device, the first RRC message sent by the network device; The terminal device establishes a network connection with the network device according to the configuration information. 13. The method according to claim 12, wherein the configuration information includes the cell radio network temporary identifier (C-RNTI) and radio resource information of the second SIM card. 14. The method according to claim 12, wherein the terminal device sends a second RRC message to the network device, comprising: When the second SIM card is in an idle state and the second SIM card needs to initiate a service, the terminal device sends the second RRC message to the network device. 15. The method according to claim 12 or 14, wherein the network device obtains configuration information for accessing the network of the second SIM card, comprising: The network device generates the configuration information according to the network connection establishment request. 16. The method according to claim 12 or 13, further comprising: The terminal device sends a second RRC message to the network device, the second RRC message carries a network connection recovery request, and the network connection recovery request is used to request recovery of the connection between the second SIM card and the network device network connection. 17. The method according to claim 16, wherein the terminal device sends a second RRC message to the network device, comprising: When the second SIM card is in a deactivated state and the second SIM card needs to initiate a service, the terminal device sends the second RRC message to the network device. 18. The method according to claim 16 or 17, wherein the network device obtains configuration information for accessing the network of the second SIM card, comprising: The network device generates the configuration information according to the network connection restoration request. 19. The method according to any one of claims 12 to 18, further comprising: The network device disconnects the network connection with the first SIM card. 20. The method according to claim 19, wherein disconnecting the network device from the network connection with the first SIM card comprises: The network device disconnects the network connection with the first SIM card according to the disconnection mode indicated by the first indication information. 21. An apparatus for establishing a network connection, comprising a unit or module for performing the method according to any one of claims 1 to 11. 22. A device for establishing a network connection, characterized in that it includes a processor and a memory, and instructions are stored in the memory, and when the processor executes the instructions, the device executes any one of claims 1 to 11. method described in the item. 23. A computer-readable storage medium, wherein a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, any one of claims 1 to 11 can be realized. the method described.

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