WO2021228238A1 - 一种网络接入方法及终端 - Google Patents

一种网络接入方法及终端 Download PDF

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Publication number
WO2021228238A1
WO2021228238A1 PCT/CN2021/093888 CN2021093888W WO2021228238A1 WO 2021228238 A1 WO2021228238 A1 WO 2021228238A1 CN 2021093888 W CN2021093888 W CN 2021093888W WO 2021228238 A1 WO2021228238 A1 WO 2021228238A1
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WO
WIPO (PCT)
Prior art keywords
terminal
access network
network device
rrc connection
service
Prior art date
Application number
PCT/CN2021/093888
Other languages
English (en)
French (fr)
Inventor
王鑫
于亚军
汪峰
康婷
王冰
Original Assignee
荣耀终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202010544883.8A external-priority patent/CN113676891B/zh
Application filed by 荣耀终端有限公司 filed Critical 荣耀终端有限公司
Priority to EP21804766.0A priority Critical patent/EP4096258A4/en
Priority to US17/908,754 priority patent/US20230128087A1/en
Publication of WO2021228238A1 publication Critical patent/WO2021228238A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/183—Processing at user equipment or user record carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/34—Selective release of ongoing connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • This specification relates to the field of mobile communication technology, and specifically to a network access method and terminal.
  • the fifth generation (5G) network architecture can be divided into two networking modes: non-stand-alone (NSA) and stand-alone (SA).
  • NSA non-stand-alone
  • SA stand-alone
  • the NSA networking method is to add a 5G carrier on the basis of long term evolution (LTE), and the 5G carrier can be used to carry user plane data.
  • LTE long term evolution
  • the third generation partnership project (3GPP) version (release, R) 15 defines the dual connectivity of long term evolution (LTE) and new radio (NR) (dual connectivity, DC) framework, including evolved unified terrestrial radio access network (evolved universal terrestrial radio access network, E-UTRAN)-NR dual connectivity (E-UTRA-NR dual connectivity, EN-DC) architecture .
  • LTE long term evolution
  • NR new radio
  • EN-DC dual connectivity, DC
  • the EN-DC architecture does not need to add a fifth generation (5th generation, 5G) core network, but only needs to add a 5G base station, which cooperates with the existing 4th generation (4G) base station to provide a 5G+4G combination for terminals Access.
  • the terminal When the terminal is in the EN-DC state, it simultaneously accesses the 4G cell and the 5G cell.
  • the 4G cell can be called the master cell group (MCG), and the 5G cell can be called the secondary cell group. group, SCG).
  • some terminals can support dual subscriber identification module (subscriber identification module, SIM) cards, so that services from different networks can be implemented, that is, services such as voice, MMS, SMS, and data.
  • SIM subscriber identification module
  • One of the dual SIM cards can be used as the primary card, and the other SIM card can be used as the secondary card.
  • the main card refers to the default data service card, that is, the data service of the terminal is transmitted through the network corresponding to the main card by default.
  • the main card will release the SCG when the secondary card performs related services (such as voice services, MMS services, etc.).
  • the network side needs to initiate an SCG addition process to enable the main card to re-access the 5G cell. If the network side does not initiate the SCG addition process for a long time, the main card may not be able to access the 5G cell for a long time, which affects the user's network experience.
  • the embodiments of the present application provide a network access method and a terminal.
  • the terminal can actively initiate an RRC connection re-establishment to trigger the network side to add a secondary cell for the terminal to improve the user's network experience.
  • an embodiment of the present application provides a network access method, which can be applied to a terminal configured with two SIM cards, one of the two SIM cards is used as a primary card, and the other is used as a secondary card.
  • the terminal is connected to the main access network device and the auxiliary access network device through the main card, and the auxiliary access network device is connected by the terminal with the assistance of the main access network device.
  • the method includes: when the terminal performs the first service through the secondary card, the terminal disconnects the RRC connection between the terminal and the secondary access network device; the terminal determines that the first service is over; the terminal actively disconnects the terminal and the primary access network device. And send an RRC connection re-establishment request to the primary access network device, so that the terminal can reconnect to the secondary access network device through the primary card with the assistance of the primary access network device.
  • the terminal when the connection between the main card of the terminal and the auxiliary access network device is disconnected due to the service performed by the auxiliary card, the service performed on the auxiliary card is At or after the end, the terminal can actively disconnect the connection between the main card and the main access network device, and send a connection re-establishment request to the main access network device through the main card, which can trigger the main access network device to assist the terminal as soon as possible Connect to the auxiliary access network equipment through the main card.
  • the terminal actively disconnects the RRC connection between the terminal and the main access network device, and sends the RRC connection re-establishment request to the main access network device, including: when the terminal passes through when the first service ends When the cell where the main card resides supports dual connectivity, the terminal actively disconnects the RRC connection between the terminal and the main access network device, and sends an RRC connection re-establishment request to the main access network device.
  • connection with the main access network device is only disconnected when the cell where the main card resides supports dual connectivity. It can be understood that in the case that the cell does not support dual connectivity, it is difficult for the terminal to connect to the secondary access network device through the primary card. Therefore, in this implementation manner, when the cell does not support dual connectivity, the connection with the main access network device is no longer disconnected, thereby improving the user's communication experience.
  • the dual connection is a unified terrestrial wireless access network-new air interface dual connection EN-DC.
  • the terminal actively disconnects the RRC connection between the terminal and the main access network device, and sends an RRC connection re-establishment request to the main access network device, including: when the terminal passes the main card in the first time When no measurement control message or RRC connection reconfiguration request of event B1 is received in the segment, the terminal actively disconnects the RRC connection between the terminal and the main access network device, and sends an RRC connection reestablishment request to the main access network device;
  • the first time period is the time period that starts when the first service ends.
  • the terminal may first wait for the measurement control message of the event B1 or the RRC connection reconfiguration request issued by the network side. If it does not wait for the measurement control message of event B1 or the RRC connection reconfiguration request issued by the network side within a certain period of time, the terminal actively disconnects the RRC connection between the terminal and the main access network device and sends it to the main access network device
  • the RRC connection re-establishment request avoids the measurement control message of the event B1 or the RRC connection reconfiguration request that is normally issued with the network side.
  • the terminal actively disconnects the RRC connection between the terminal and the main access network device, and sends an RRC connection re-establishment request to the main access network device, including: when the terminal passes through in the second time period When the total number of times that the secondary card performs at least one service is less than or equal to n times, the terminal actively disconnects the RRC connection between the terminal and the primary access network device, and sends an RRC connection re-establishment request to the primary access network device ,
  • the second time period is a time period that ends when the first service ends, and the first service is one of at least one service.
  • the terminal when the total number of times that the secondary card performs services that can cause the primary card to release the secondary cell service within a certain period of time does not exceed the preset number of times, the terminal sends an RRC connection re-establishment request to the primary access network device. , Thereby avoiding the abnormal network-side statistical data caused by frequently sending RRC connection re-establishment requests to the main access network device.
  • the at least one service includes at least one of the following:
  • the voice service corresponding to the secondary card and the MMS service corresponding to the secondary card.
  • the terminal actively disconnects the RRC connection between the terminal and the main access network device, and sends an RRC connection re-establishment request to the main access network device, including: when the terminal is not running a delay-sensitive application , The terminal actively disconnects the RRC connection between the terminal and the main access network device, and sends an RRC connection re-establishment request to the main access network device; or, when the terminal is not performing delay-sensitive services, the terminal actively disconnects the terminal and RRC connection between the main access network devices, and sends an RRC connection re-establishment request to the main access network device.
  • the connection between the terminal and the main access network device is actively disconnected, so as to avoid the terminal
  • the disconnection of the connection with the main access network equipment affects the delay-sensitive applications or delay-sensitive services.
  • the method further includes: when the terminal passes through When the primary card fails to connect to the secondary access network equipment, the terminal will list the cell where the terminal currently resides through the primary card in the first list; among them, when the terminal resides in the cell in the first list through the primary card, the terminal will not Then send an RRC connection re-establishment request to the main access network device.
  • the cell in which the terminal fails to try to access the secondary access network device through the primary card can be included in the blacklist.
  • the terminal no longer Send an RRC connection re-establishment request to the primary access network device to avoid repeated initiation of RRC connection re-establishment caused by repeated failures of access to the secondary access network device.
  • the method further includes: when the terminal device restarts, or when the tracking area of the wireless network that the terminal accesses through the main card changes, the terminal clears the first list.
  • the primary access network device is a 4G access network device
  • the auxiliary access network device is a 5G access network device.
  • the terminal in the case that the 5G cell accessed by the main card of the terminal is released due to the service performed by the secondary card, the terminal can actively release the main card when the service performed by the secondary card ends or afterwards.
  • the accessed 4G cell, and the main card sends a connection re-establishment request to the 4G access network device, which can trigger the main access network device to assist the terminal to access the 5G cell via the main card as soon as possible to improve user communication experience.
  • an embodiment of the present application provides a terminal configured with two SIM cards, one of the two SIM cards is used as a primary card, and the other is used as a secondary card.
  • the terminal is connected to the main access network device and the auxiliary access network device through the main card, and the auxiliary access network device is connected by the terminal with the assistance of the main access network device.
  • the terminal includes: a processor, a memory, and a transceiver; the memory is used to store computer instructions; when the terminal is running, the processor executes the computer instructions to make the terminal execute: when the terminal performs the first service through the secondary card, the terminal disconnects the terminal and the auxiliary The RRC connection between the access network devices; the terminal determines that the first service ends; the terminal actively disconnects the RRC connection between the terminal and the main access network device, and sends an RRC connection re-establishment request to the main access network device for the terminal Reconnect to the auxiliary access network device through the main card with the assistance of the main access network device.
  • the processor executes computer instructions so that the terminal also executes: when the terminal supports dual connections through the first cell where the main card resides at the end of the first service, the terminal actively disconnects the terminal from the main connection RRC connection between network access devices, and send an RRC connection re-establishment request to the main access network device.
  • the dual connection is a unified terrestrial wireless access network-new air interface dual connection EN-DC.
  • the processor executes computer instructions so that the terminal also executes: when the terminal does not receive the measurement control message of event B1 or the RRC connection reconfiguration request within the first time period through the main card, the terminal takes the initiative The RRC connection between the terminal and the main access network device is disconnected, and an RRC connection re-establishment request is sent to the main access network device; the first time period is the time period that starts when the first service ends.
  • the processor executes computer instructions so that the terminal also executes: when the total number of times that the terminal performs at least one service in at least one service through the secondary card in the second time period is less than or equal to n times, the terminal Actively disconnect the RRC connection between the terminal and the main access network device, and send an RRC connection re-establishment request to the main access network device.
  • the second time period is the time period that ends when the first service ends, and the first service is At least one business in one business.
  • the at least one service includes at least one of the following:
  • the voice service corresponding to the secondary card and the MMS service corresponding to the secondary card.
  • the processor executes computer instructions so that the terminal also executes: when the terminal is not running a delay-sensitive application, the terminal actively disconnects the RRC connection between the terminal and the main access network device, and reports to the main The access network device sends an RRC connection re-establishment request; or, when the terminal is not performing a delay-sensitive service, the terminal actively disconnects the RRC connection between the terminal and the main access network device, and sends the RRC connection to the main access network device Re-establish the request.
  • the processor executes a computer instruction to make the terminal It also executes: when the terminal fails to connect to the secondary access network device through the main card, the terminal will list the cell where the terminal currently resides through the primary card into the first list; among them, when the terminal resides in the first list through the primary card In the cell, the terminal no longer sends an RRC connection re-establishment request to the primary access network device.
  • the processor executes computer instructions so that the terminal also executes: when the terminal device restarts, or when the tracking area of the wireless network that the terminal accesses through the main card changes, the terminal clears the first list.
  • the primary access network device is a 4G access network device
  • the auxiliary access network device is a 5G access network device.
  • the terminal provided in the second aspect is used to execute the method provided in the first aspect, and therefore, the beneficial effects that it can achieve can refer to the aforementioned corresponding beneficial effects.
  • the embodiments of the present application provide a chip system, including: a processor and an interface circuit, the processor and the interface circuit are connected, for executing instructions so that the terminal installed with the chip system executes the chip system provided in the first aspect method.
  • an embodiment of the present application provides a computer storage medium, the computer storage medium includes a computer instruction, and when the computer instruction runs on a terminal, the terminal executes the method provided in the first aspect.
  • the embodiments of the present application provide a computer program product, and when the program code contained in the computer program product is executed by a processor in a terminal, the method provided in the first aspect is implemented.
  • the terminal configured with dual cards can actively disconnect the RRC connection between the main card and the network side when the service of the secondary card ends, and send an RRC connection re-establishment request through the main card In this way, the network side can be triggered to add a secondary cell for the primary card of the terminal as soon as possible, thereby improving the user's network experience.
  • Figure 1 is a schematic diagram of a network system to which an embodiment of the present application is applicable;
  • FIG. 2 is a schematic structural diagram of a terminal provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of a user interface provided by an embodiment of the application.
  • FIG. 4A is a flowchart of a network access method provided by an embodiment of this application.
  • FIG. 4B is a flowchart of a network access method provided by an embodiment of this application.
  • FIG. 4C is a flowchart of a network access method provided by an embodiment of this application.
  • FIG. 5A is a schematic diagram of a user interface provided by an embodiment of this application.
  • FIG. 5B is a schematic diagram of a user interface provided by an embodiment of this application.
  • FIG. 5C is a schematic diagram of a user interface provided by an embodiment of the application.
  • FIG. 5D is a schematic diagram of a user interface provided by an embodiment of the application.
  • FIG. 5E is a schematic diagram of a user interface provided by an embodiment of this application.
  • FIG. 6A is a schematic diagram of a user interface provided by an embodiment of the application.
  • FIG. 6B is a schematic diagram of a user interface provided by an embodiment of the application.
  • FIG. 7 is a schematic flowchart of a network side adding a secondary cell to a terminal according to an embodiment of the application.
  • FIG. 8 is a schematic structural diagram of a terminal provided by an embodiment of this application.
  • FIG. 9 is a schematic structural diagram of a chip system provided by an embodiment of the application.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features.
  • the terms “including”, “including”, “having” and their variations all mean “including but not limited to”, unless otherwise specifically emphasized.
  • the fifth-generation network architecture can be divided into two networking modes, NSA and independent architecture SA.
  • NSA independent architecture
  • the EN-DC architecture is a dual-connection architecture defined by 3GPP.
  • the terminal Under the EN-DC architecture, the terminal can connect to 4G access network equipment, and with the assistance of 4G access network equipment to connect to 5G access network equipment , Thereby achieving simultaneous access to 4G cells and 5G cells, enabling users to have a better communication experience.
  • SIM cards are used for private business and the other SIM card is used for work; or, one SIM card is used for data business and the other SIM card is used for work.
  • the card is used for voice services.
  • One of the two SIM cards can be used as the primary card, and the other SIM card can be used as the secondary card.
  • the main card refers to the default data service card, that is, the data service of the terminal is transmitted through the network corresponding to the main card by default.
  • the main card supports EN-DC
  • the main card can access 4G cells and 5G cells at the same time.
  • the secondary card performs related services (such as voice services, MMS services, etc.), the primary card will release the 5G cell.
  • the network side issues a radio resource control (radio resource control, RRC) connection reconfiguration (connection reconfiguration) request or event B1 (event B1) measurement control message to trigger the terminal to add the SCG process.
  • RRC radio resource control
  • event B1 event B1 measurement control message
  • the network side may not issue an RRC connection reconfiguration request or event B1 measurement control message for a long time, so that the primary card cannot return to the 5G network for a long time, making the user unable to fully experience the 5G network More stable, faster, and more reliable network performance results in poor user communication experience.
  • the embodiment of the present application provides a network access method.
  • the service of the secondary card causes the primary card to release the SCG
  • the primary card can actively send an RRC connection re-establishment to the network side.
  • Request to re-establish the RRC connection between the main card and the network side thereby triggering the network side to issue an RRC connection reconfiguration request to the main card to add SCG to the main card, so that the main card can return to the 5G network as soon as possible, improving users Communication experience.
  • Fig. 1 shows a wireless communication system to which the network access method provided by the embodiment of the present application can be applied.
  • the wireless communication system may include: a terminal 100, an access network equipment (access network equipment) 210, an access network equipment 220, and an access network equipment 300. Wherein, the access network device 210 and the access network device are connected to the core network 230.
  • the access network equipment 210 may be a base transceiver station (base transceiver station) in a time division synchronous code division multiple access (time division synchronous code division multiple access, TD-SCDMA) system , BTS), may also be an evolved base station (evolutional node B, eNB) in an LTE system, or may be a next generation node B (gNB) in a 5G system.
  • base transceiver station in a time division synchronous code division multiple access (time division synchronous code division multiple access, TD-SCDMA) system , BTS
  • eNB evolved base station
  • LTE long term evolution
  • gNB next generation node B
  • the access network device 210 may also be an access point (access point, AP), a transmission node (trans TRP), a central unit (central unit, CU), or Access network entity, and may include some or all of the functions of the above access network entity.
  • access point access point, AP
  • transmission node transmission node
  • central unit central unit, CU
  • Access network entity may include some or all of the functions of the above access network entity.
  • the access network device 210 and the access network device 220 may be network devices under the EN-DC architecture. Specifically, the access network device 210 may be an eNB, and the access network device 220 may be a gNB. The access network device 210 and the access network device 220 may be connected to a 4G core network (evolved packet core, EPC) 230 together.
  • EPC evolved packet core
  • the terminal 100 may be distributed in the wireless communication system shown in FIG. 1, and may be stationary or mobile.
  • the terminal 100 includes but is not limited to: mobile phone, tablet computer (Pad), computer with wireless transceiver function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial control Wireless terminals in (industrial control), wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, and transportation safety
  • FIG. 2 shows a possible hardware structure of the terminal 100.
  • the terminal 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, Mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, earphone interface 170D, sensor module 180, buttons 190, motor 191, indicator 192, camera 193, display screen 194, and user An identification module (subscriber identification module, SIM) card interface 195, etc.
  • SIM subscriber identification module
  • the sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, and ambient light Sensor 180L, bone conduction sensor 180M, etc.
  • the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the terminal 100.
  • the terminal 100 may include more or fewer components than those shown in the figure, or combine certain components, or split certain components, or arrange different components.
  • the illustrated components can be implemented in hardware, software, or a combination of software and hardware.
  • the processor 110 may include an application processor (AP) and a modem (modem),
  • AP application processor
  • modem modem
  • the processor 110 may also include a graphics processing unit (GPU), an image signal processor (image signal processor, ISP), a controller, a video codec, and a digital signal processor (digital signal processor).
  • GPU graphics processing unit
  • ISP image signal processor
  • controller controller
  • video codec video codec
  • digital signal processor digital signal processor
  • processor DSP
  • baseband processor baseband processor
  • NPU neural-network processing unit
  • the different processing units may be independent devices or integrated in one or more processors.
  • the wireless communication function of the terminal 100 can be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem, and a baseband processor.
  • the antenna 1 and the antenna 2 are used to transmit and receive electromagnetic wave signals.
  • Each antenna in the terminal 100 can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization.
  • Antenna 1 can be multiplexed as a diversity antenna of a wireless local area network.
  • the antenna can be used in combination with a tuning switch.
  • the mobile communication module 150 may provide a wireless communication solution including 2G/3G/4G/5G and the like applied to the terminal 100.
  • the mobile communication module 150 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), and the like.
  • the mobile communication module 150 can receive electromagnetic waves by at least two antennas including the antenna 1, and perform processing such as filtering and amplifying the received electromagnetic waves, and transmitting them to a modem for demodulation.
  • the mobile communication module 150 can also amplify the signal modulated by the modem, and convert it into electromagnetic waves through the antenna 1 and radiate it out.
  • at least part of the functional modules of the mobile communication module 150 may be provided in the processor 110.
  • at least part of the functional modules of the mobile communication module 150 and at least part of the modules of the processor 110 may be provided in the same device.
  • the modem may include a modulator and a demodulator.
  • the modulator is used to modulate the low frequency baseband signal to be sent into a medium and high frequency signal.
  • the demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. Then the demodulator transmits the demodulated low-frequency baseband signal to the baseband processor for processing. After the low-frequency baseband signal is processed by the baseband processor, it is passed to the application processor.
  • the application processor outputs a sound signal through an audio device (not limited to the speaker 170A, the receiver 170B, etc.), or displays an image or video through the display screen 194.
  • the modem may be a stand-alone device.
  • the modem may be independent of the processor 110 and be provided in the same device as the mobile communication module 150 or other functional modules.
  • the mobile communication module 150 may be a module in a modem.
  • the wireless communication module 160 can provide applications on the terminal 100 including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), bluetooth (BT), and global navigation satellite systems. (global 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.
  • WLAN wireless local area networks
  • BT Bluetooth
  • GNSS global navigation satellite system
  • frequency modulation frequency modulation, FM
  • NFC near field communication technology
  • infrared technology infrared, IR
  • the wireless communication module 160 may be one or more devices integrating at least one communication processing module.
  • the wireless communication module 160 receives electromagnetic waves via the antenna 2, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110.
  • the wireless communication module 160 may also receive a signal to be sent from the processor 110, perform frequency modulation, amplify, and convert it into electromagnetic waves to radiate through the antenna 2.
  • the antenna 1 of the terminal 100 is coupled with the mobile communication module 150, and the antenna 2 is coupled with the wireless communication module 160, so that the terminal 100 can communicate with the network and other devices through wireless communication technology.
  • the wireless communication technology may include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), broadband Code division multiple access (wideband code division multiple access, WCDMA), time-division code division multiple access (TD-SCDMA), long term evolution (LTE), fifth generation, new air interface ( new radio, NR), BT, GNSS, WLAN, NFC, FM, and/or IR technologies, etc.
  • GSM global system for mobile communications
  • GPRS general packet radio service
  • CDMA code division multiple access
  • WCDMA broadband Code division multiple access
  • TD-SCDMA time-division code division multiple access
  • LTE long term evolution
  • 5 generation new air interface (new radio, NR), BT, GNSS, WLAN, NFC, FM, and/or IR technologies, etc.
  • the GNSS may include global positioning system (GPS), global navigation satellite system (GLONASS), Beidou navigation satellite system (BDS), quasi-zenith satellite system (quasi -zenith satellite system, QZSS) and/or satellite-based augmentation systems (SBAS).
  • GPS global positioning system
  • GLONASS global navigation satellite system
  • BDS Beidou navigation satellite system
  • QZSS quasi-zenith satellite system
  • SBAS satellite-based augmentation systems
  • the SIM card interface 195 is used to connect to the SIM card.
  • the SIM card can be inserted into the SIM card interface 195 or pulled out from the SIM card interface 195 to achieve contact and separation with the terminal 100.
  • the terminal 100 may support N SIM card interfaces, and N is a positive integer greater than 1.
  • the SIM card interface 195 can support Nano SIM cards, Micro SIM cards, SIM cards, etc.
  • the same SIM card interface 195 can insert multiple cards at the same time. The types of the multiple cards can be the same or different.
  • the SIM card interface 195 can also be compatible with different types of SIM cards.
  • the SIM card interface 195 may also be compatible with external memory cards.
  • the terminal 100 interacts with the network through the SIM card to implement functions such as call and data communication.
  • the terminal 100 uses an eSIM, that is, an embedded-SIM (embedded-SIM, eSIM) card.
  • the eSIM card can be embedded in the terminal 100 and cannot be separated from the terminal 100.
  • the terminal 100 may be installed with a SIM card A1 and a SIM card A2, that is, the terminal 100 is configured with dual SIM cards.
  • the SIM card A1 can correspond to the operator A11
  • the SIM card A2 can correspond to the operator A21.
  • the operator A11 and the operator A21 may be different operators.
  • the operator A11 can be China Mobile Operator A21 can provide China Unicom
  • the operator A11 and the operator A21 may be the same operator, for example, the operator A11 and the operator A21 are China Unicom
  • the embodiment of the present application may collectively refer to the SIM card and its evolution as a SIM card.
  • the SIM card may be an identification card of a global system for mobile communications (GSM) digital mobile phone user.
  • GSM global system for mobile communications
  • the SIM card can also be used to store the user's identification code and key, and support the authentication of the user by the GSM system.
  • the SIM card may also be a universal subscriber identity module (USIM), which may also be referred to as an upgraded SIM card. Wait, I won't list them all here.
  • GSM global system for mobile communications
  • USB universal subscriber identity module
  • the SIM card can be understood as a key for the terminal 100 to access the network. It can be understood that the SIM card has the contract information or network usage rights of the operator's contracted user, and it represents the user's identity.
  • the terminal 100 can access the mobile network by virtue of the user identity represented by the SIM card.
  • the user identity represented by the SIM card may be a user identity (such as an international mobile subscriber identity (IMSI) or a temporary mobile subscriber identity (TMSI), etc.).
  • IMSI international mobile subscriber identity
  • TMSI temporary mobile subscriber identity
  • the user identity corresponding to the SIM card A1 may be referred to as the user identity A12
  • the user identity corresponding to the SIM card A2 is referred to as the user identity A22.
  • the terminal 100 uses a SIM card (for example, a SIM card A1 or a SIM card A2) to access the network. It can also be referred to as the terminal 100 accessing the network through a user identity (user identity A12 or user identity A22).
  • the terminal 100 accessing the network through the user identity means that the terminal accesses the network by virtue of the subscription information or network usage rights corresponding to the user identity.
  • the SIM card (for example, the SIM card A1 and the SIM card A2) logically corresponds to a communication entity served by the network side, such as a user equipment (UE) in a 4G or 5G mobile communication system.
  • the communication entity communicates with the network side through the user identity corresponding to the SIM card.
  • the SIM card A1 and the SIM card A2 can be recognized by the network side or regarded as two different communication entities, even if the SIM card A1 and the SIM card A2 are installed in the same physical entity (ie, the terminal 100). In other words, when the terminal 100 accesses the network through different user identities, the network side can recognize or regard the terminal 100 as a different communication entity.
  • the terminal 100 may include two communication entities corresponding to the SIM card A1 and the SIM card A2, respectively.
  • the communication entity corresponding to the SIM card A1 (user identity A12) may be referred to as the communication entity A13
  • the communication entity corresponding to the SIM card A2 (user identity A22) may be referred to as the communication entity A23.
  • the communication entity A13 is an entity used in the terminal 100 to perform services through the user identity A12.
  • the terminal 100 communicates with the network side through the user identity A12, which may be referred to as the communication entity A13 to communicate with the network side.
  • the communication entity A23 is an entity used in the terminal 100 to perform services through the user identity A22.
  • the terminal 100 communicates with the network side through the user identity A22, which may be referred to as the communication entity A23 to communicate with the network side.
  • the communication entity A13 and the communication entity A23 may be functional entities or logical entities in the modem of the terminal 100.
  • the terminal 100 may connect to different access network devices through the user identity A12 and the user identity A22, respectively.
  • the communication entity A13 and the communication entity A23 may be respectively connected to different access network devices.
  • the communication entity A13 is connected to the access network device 210
  • the communication entity A23 is connected to the access network device 300.
  • the terminal 100 can connect to the same access network device through the user identity A12 and the user identity A22.
  • the communication entity A13 and the communication entity A23 can connect to the same access network device.
  • the communication entity A13 and the communication entity A23 are connected to the access network device 210 (not shown).
  • the SIM card A1 can be set as the primary card.
  • the terminal 100 may determine that the SIM card A1 is the master card in response to the user's operation.
  • the terminal 100 may display a dual-card management interface, and set the SIM card A1 as the primary card in response to the operation initiated by the user on the functional area corresponding to the SIM card A1.
  • the SIM card A1 is set as the primary card
  • the SIM card A2 can be referred to as the secondary card
  • the communication entity A13 can be referred to as the primary card modem
  • the communication entity A23 can be referred to as the secondary card modem.
  • Fig. 4A shows a flowchart of a network access method provided by some embodiments.
  • the primary card when the secondary card service starts, the primary card (or the primary card modem) can be triggered to return to LTE from 5G. In other words, before the secondary card service starts, the primary card can access the 5G cell and the LTE cell at the same time. When the secondary card business starts, the primary card can release the 5G cell and keep accessing the LTE cell.
  • the primary card can release the 5G cell and keep accessing the LTE cell.
  • the main card can actively trigger the process of returning to 5G.
  • the primary card can actively trigger the network side to add a 5G cell to the primary card, so that it can access the 5G cell as soon as possible and improve the user's communication experience.
  • step 407 to step 411 in FIG. 4C will not be repeated here.
  • the network access method provided in the embodiments of the present application can actively trigger the process of returning the main card to 5G when the secondary card service ends or after, so that the main card can return to 5G as soon as possible, and improve the user’s performance in the dual-card scenario. Communication experience.
  • Fig. 4B shows a flowchart of a network access method provided by other embodiments.
  • the secondary card business causes the main card to return to LTE from the NSA.
  • the primary card can release the 5G cell and keep accessing the LTE cell.
  • the terminal can determine whether the current LTE cell of the primary card supports EN-DC, and no SCG is added within the time T.
  • the SCG is not added within the time T of the main card refers to whether the network side has triggered the process of adding the SCG to the main card during the time T.
  • the terminal can determine whether the LTE cell where the main card currently resides supports EN-DC. For details, refer to the description of step 410a in FIG. 4C below.
  • the terminal does not perform subsequent steps.
  • the terminal can determine whether the network side has triggered the process of adding SCG to the primary card within the time period T from when the secondary card service ends. For details, refer to the description of step 410b in FIG. 4C below.
  • the terminal can determine whether the number of secondary card services exceeds n times within T1. For details, reference may be made to the description of step 410c in FIG. 4C below, which will not be repeated here.
  • the terminal does not perform subsequent steps.
  • the terminal can determine whether the delay-sensitive whitelist application is running. For details, reference may be made to the description of step 410d in FIG. 4C below, which will not be repeated here.
  • the terminal can actively trigger the LTE of the main card to initiate re-establishment.
  • the terminal can actively trigger the LTE of the main card to initiate re-establishment.
  • the terminal can judge whether the SCG is successfully added after the main card is re-established. For details, reference may be made to the description of step 415 in FIG. 4C below, which will not be repeated here.
  • the terminal sets the current cell of the main card (that is, the cell where the main card currently resides) such as a temporary blacklist, and does not initiate a quick return to 5G re-establishment.
  • the terminal sets the current cell of the main card (that is, the cell where the main card currently resides) such as a temporary blacklist, and does not initiate a quick return to 5G re-establishment.
  • the network access method provided in the embodiments of the present application can actively trigger the process of returning the main card to 5G when the secondary card service ends or after, so that the main card can return to 5G as soon as possible, and improve the user’s performance in the dual-card scenario. Communication experience.
  • the communication entity A13 when the communication entity A13 is in the EN-DC state with the access network device 210 as the main node, there is a 4G RRC connection between the communication entity A13 and the access network device 210, and the communication entity 13 and the access network device There is a 5G RRC connection between 220.
  • the communication entity 23 and the access network device 200 have a 4G RRC connection and have a 4G RRC connection.
  • the communication entity A13 is the master modem. That is, the data service of the terminal 100 (for example, the data service of a third-party application run by the terminal 100) is transmitted through the link between the communication entity 13 and the network side by default.
  • the communication entity A13 When the communication entity A13 is in the EN-DC state, the user can experience the performance of 5G.
  • the communication entity A13 is in the EN-DC state, and the status bar of the terminal 100 may display the 4G and 5G dual network icons 501 corresponding to the SIM card A1.
  • the terminal 100 can smoothly play high-definition videos online.
  • the communication entity A23 may perform step 400 to initiate service B1.
  • the terminal 100 may respond to the user's operation by exiting the video playing interface and displaying the dialing interface.
  • the user can enter the phone number he wants to call on the dialing interface, and then select the SIM card A2 to dial.
  • the communication entity A23 can initiate a voice service (service B1).
  • step 401 may also be performed to transmit a request for occupying the transmitter to the arbitration entity, and the request for occupying the transmitter includes the identifier of the service B1.
  • the arbitration entity may respond to the request to occupy the transmitter and execute step 402a to determine that the communication entity A23 occupies the transmitter.
  • the communication entity A23 can perform service B1. For example, when the service B1 is a voice service, the communication entity A23 can perform dialing and a call after the call is connected.
  • the terminal 100 is equipped with a set of transmitters.
  • the communication entity A13 and the communication entity A23 take turns occupying the transmitter by means of time division multiplexing (TDM).
  • the terminal 100 may also include an arbitration entity.
  • the arbitration entity may be a functional entity or a logical entity in the modem of the terminal 100.
  • the arbitration entity can decide which of the communication entity A13 and the communication entity A23 to occupy the transmitter.
  • the SIM card A1 is the main card
  • the arbitration entity decides that the transmitter is occupied by the communication entity A13 by default.
  • the communication entity A13 applies to the arbitration entity to occupy the sending machine.
  • the arbitration entity may also perform step 402b to determine that the service B1 is one of the preset at least one service.
  • the at least one type of service may include a service that takes a long time or has a large amount of service data, such as a voice service and a multimedia message service.
  • the short message service the amount of data is relatively small and the time for sending or receiving short messages is short. Therefore, the short message service does not belong to the at least one service.
  • the service performed through the user identity A22 is a service of the at least one service, the terminal 100 needs to fall back from the EN-DC state under the user identity A13 to the LTE state under the user identity A12.
  • the terminal 100 needs to disconnect the 5G RRC connection between the communication entity A13 and the access network device 220, and only maintain the 4G RRC connection between the communication entity A13 and the access network device 210.
  • the arbitration entity may perform step 403 to send a 5G link release notification to the communication entity A13.
  • the communication entity A13 may respond to the 5G link release notification, perform step 404, and send an SCG failure (SCG fail) message to the access network device 210.
  • the access network device 210 may respond to the SCG failure message, perform step 405, and send a 5G RRC connection release (RRC connection release) message to the communication entity A13.
  • the communication entity A13 may respond to the 5G RRC connection release message and execute step 406 to release the 5G RRC connection.
  • the communication entity A23 performs service B1
  • the service B1 is one of the preset at least one service
  • the 5G RRC connection between the communication entity A13 and the access network device 220 is released , That is, the secondary cell of the communication entity A13 is released.
  • the communication entity A13 only maintains the 4G RRC connection between it and the access network device 210.
  • service B1 can be set as a voice service.
  • the status bar of the terminal 100 may display the 4G network icon 502 corresponding to the SIM card A1.
  • the communication entity A23 may perform step 407 to end the service B1.
  • the service B1 as a voice service as an example.
  • the communication entity A23 may end the service B1 in response to the hang-up operation initiated by the user.
  • step 408 may also be performed to deliver the service B1 termination notification to the arbitration entity.
  • the arbitration entity may respond to the notification of the end of the service B1 and execute step 409a to restore the communication entity A13 to occupy the transmitter. In other words, when the service B1 ends, the transmitter is occupied by the communication entity A13 again.
  • the communication entity A13 can maintain the connection between it and the access network device 210.
  • the communication entity A13 can actively disconnect the connection between it and the access network device 210 and initiate an RRC connection re-establishment.
  • the network side is triggered to issue an RRC connection reconfiguration request to the communication entity A13, so that the SCG can be quickly added to the communication entity A13.
  • the arbitration entity when the arbitration entity receives the notification of the end of service B1, the arbitration entity may pass to the communication entity A13 a message indicating the end of the service B1 or a message used to instruct the communication entity A13 to send an RRC connection re-establishment request, so that The communication entity A13 sends an RRC connection re-establishment request to the access network device 210.
  • step 409b may be executed to deliver the service B1 termination notification to the communication entity A13.
  • the communication entity A13 may perform subsequent steps such as steps 411 and 412.
  • the arbitration entity when the arbitration entity receives the service B1 end notification, the arbitration entity may transfer the RRC connection re-establishment request sending instruction to the communication entity A13. After receiving the RRC connection re-establishment request sending instruction, the communicating entity A13 may perform subsequent steps such as steps 411 and 412.
  • the communication entity A23 when the communication entity A23 detects the end instruction of the service B1, it may directly transfer to the communication entity A13 a message indicating the end of the service B1 or a message used to instruct the communication entity A13 to send an RRC connection re-establishment request, So that the communication entity A13 sends an RRC connection re-establishment request to the access network device 210.
  • the message used to indicate the end of the service B1 may be a notification of the end of the service B1.
  • the message used to instruct the communication entity A13 to send the RRC connection re-establishment request may be an RRC connection re-establishment request sending instruction.
  • the communication entity A13 may first perform step 411 to actively release the communication entity A13 and 4G RRC connection between the access network devices 210. It can be understood that, regarding the release of the RRC connection, the RRC connection is usually released in response to the RRC connection release message when the RRC connection release message sent by the network side is received. In step 411, the communication entity A13 may actively release the RRC connection without sending the RRC connection release message from the network side.
  • step 412 may be performed to send an RRC connection re-establishment request to the access network device 210.
  • the access network device 210 receives the RRC connection re-establishment request, and may respond to the RRC connection re-establishment request, perform step 413, and send an RRC connection re-establishment message to the communication entity A13.
  • the communication entity A13 may perform radio resource configuration, set the content of the RRC connection re-establishment complete message, and so on.
  • step 414 may be performed to send an RRC connection re-establishment complete message to the access network device 210.
  • the communication entity A13 re-accesses the cell provided by the access network device 210 through the RRC connection re-establishment procedure, which can trigger the access network device 210 to add an SCG to the communication entity A13.
  • the process of adding SCG will be introduced below in conjunction with FIG. 7, and will not be repeated here.
  • the communication entity A13 may first perform step 410a to determine whether the primary cell where the communication entity A13 currently resides supports EN-DC.
  • the high frequency band network signal coverage is relatively small.
  • the coverage area of the 5G signal provided by the access network device 220 may be smaller than the coverage area of the 4G signal provided by the access network device 210. Therefore, one or more of the cells provided by the access network device 210 may not have 5G. Signal coverage does not support EN-DC.
  • One or more of the cells provided by the access network device 210 may also not support EN-DC due to network configuration and other reasons. In other words, not all cells provided by the access network device 210 support EN-DC.
  • the terminal 100 is displaced or the signal quality of the 4G cell where the communication entity A13 resides changes, causing the communication entity A13 to switch to another 4G cell. That is, when the communication entity A23 starts to perform the service B1 and when the communication entity A23 ends the service B1, the 4G cell where the communication entity A13 resides may be different. It can be seen from the above paragraph that when the service B1 executed by the communication entity A23 ends, the 4G cell where the communication entity A13 resides may not support EN-DC. Therefore, before performing step 411, the communication entity A13 may first determine whether the 4G cell it currently resides in supports EN-DC.
  • the communication entity A13 may determine whether the 4G cell currently camped on supports EN-DC according to its cell access history record. Historically, whenever the communication entity A13 accesses a 4G cell, it can record whether it receives an RRC connection reconfiguration request issued by the access network device to which the 4G cell belongs when attaching the 4G cell. If the RRC connection reconfiguration request is received, it indicates that the 4G cell supports EN-DC. If the RRC connection reconfiguration request is not received, it means that the 4G cell does not support EN-DC. Thus, the communication entity A13 can determine whether the cell where the communication entity A13 currently resides supports EN-DC.
  • the communication entity A13 may perform step 411 and subsequent steps.
  • the communication entity A13 before performing step 411, performs step 410b to determine whether the communication entity A13 receives the SCG addition trigger message issued by the network side when the timer C1 expires.
  • the SCG addition trigger message may specifically be a measurement control message of the B1 event or an RRC connection reconfiguration request. It can be understood that at the end of service B1, or in a relatively low time after the end, the network side may also actively send the measurement control message of the B1 event or the RRC connection reconfiguration request to the communication entity A13 to trigger the addition of SCG to the communication entity A13 Process.
  • the communication entity A13 performs step 410b before performing step 411.
  • the duration of the timer C1 may be determined by the time duration data of the main card returning to the 5G network.
  • the time for the main card to return to 5G can be the time between the end of the secondary card service (which causes the main card to release the SCG) and the time when the main card reconnects to the 5G network in the dual-card scenario.
  • the distribution of each time length in the 5G time length big data returned by the main card can be calculated.
  • the duration of the timer C1 can be determined according to the distribution of each duration in the 5G duration data returned by the main card. For example, the duration with the highest probability can be set as the duration of timer C1.
  • the duration of the timer C1 may be preset through experience or experiment, for example, it may be a duration of 2s.
  • the communication entity A13 may perform step 411 and subsequent steps.
  • the communication entity A13 may first perform 410c to determine whether the total number of times that the communication module A23 performs at least one service in the service exceeds n times in the time period T1.
  • the time period T1 may refer to the time period counted forward when the communication entity A13 receives a message indicating the end of the service B1 or a message used to instruct the communication entity A13 to send an RRC connection re-establishment request.
  • the time period T1 has a time length of 60 seconds, then the time period T1 refers to the end point when the communication entity A13 receives the message indicating the end of the service B1 or instructs the communication entity A13 to send the RRC connection re-establishment request message , 60 seconds from forward.
  • the time length of the time period T1 may be 120 seconds, or 180 seconds, and so on.
  • n is a preset value, for example, it can be 3 times, or 4 times, and so on.
  • the total number of times of performing at least one type of service refers to accumulating the performed at least one type of service.
  • the at least one service includes voice service and MMS service. If the voice service is performed once and the MMS service is performed twice, the total number of services in at least one service is 3 (1+2).
  • the communication entity A13 triggers the RRC connection re-establishment every time or after at least one of the services performed by the communication entity A23 ends. If in a short period of time, the communication entity A23 performs at least one type of service with a large number of times, the RRC connection re-establishment will occur frequently, which may lead to abnormal statistics on the network side. In order to avoid this phenomenon from happening.
  • step 410c is performed before the communication entity A13 performs step 411.
  • n can be 3 or 4, and so on.
  • the size of n can be preset based on experience or experiment.
  • the communication entity A13 may first perform 410d to determine whether the terminal 100 is currently running a delay-sensitive application. Since the SIM card A1 is the default data service card, the service data of the application run by the terminal 100 is transmitted through the connection between the communication entity A13 and the network side. In order to trigger the RRC connection re-establishment, the communication entity A13 needs to disconnect its connection with the network side, that is, step 411 is executed. If the terminal 100 is currently running a delay-sensitive application, the communication entity A13 needs to disconnect it from the network side, which will affect the user's operating experience of the application. Therefore, before performing step 411, the communication entity A13 may first perform 410d.
  • applications that are sensitive to delay may be applications in the whitelist of delay-sensitive applications.
  • the whitelist of delay-sensitive applications may include application identities of multiple applications.
  • the application identifier may be the package name of the application.
  • the whitelist of delay-sensitive applications can be used as a configuration file, which is preset in the terminal 100 when the terminal 100 is produced.
  • Applications in the whitelist of delay-sensitive applications may include interactive games (for example, multiplayer online battle arena (MOBA)) applications, telephone applications, and the like.
  • MOBA multiplayer online battle arena
  • the developer can update the applications in the delay-sensitive application whitelist, for example, add a new interactive application to the delay-sensitive application whitelist.
  • the updated delay-sensitive application whitelist may be sent to the terminal 100 in a server push manner.
  • users can add applications to the whitelist of delay-sensitive applications.
  • the terminal 100 may provide an operation portal and an interactive interface for managing the delay-sensitive application whitelist, so that the user can add applications to the delay-sensitive application whitelist.
  • the terminal 100 may display an operation portal for managing the whitelist of delay-sensitive applications in response to the operation initiated by the user for the "setting" function option.
  • the terminal 100 may display an interface as shown in FIG. 6A in response to the operation on the operation portal.
  • the application D1 and the application D2 are applications that are installed on the terminal 100 and have been added to the whitelist of delay-sensitive applications.
  • the application D3 and the application D4 are applications installed on the terminal 100 but not added to the whitelist of delay-sensitive applications.
  • the terminal 100 may provide a "delete” option so that the user can delete related applications from the whitelist of delay-sensitive applications.
  • the terminal 100 may provide an "add" function option so that the user can add related applications to the whitelist of delay-sensitive applications. For example, referring to FIGS. 6A and 6B, the terminal 100 may add the application D3 to the whitelist of delay-sensitive applications in response to the operation on the "add" function option corresponding to the application D3.
  • the communication entity A13 can determine whether the application running in the foreground of the terminal 100 is an application in the application whitelist. For example, it can obtain the package name of the application running in the foreground, and match or search the package name in the application whitelist. , If the package name that is consistent with the package name is matched or searched, the foreground running application is determined to be the application in the application whitelist.
  • the front-end running application is an application in the application whitelist, it is determined that the terminal 100 is running a delay-sensitive application.
  • the current running application is not an application in the application whitelist, it is determined that the terminal 100 does not run a delay-sensitive application.
  • step 411 and subsequent steps may be performed.
  • the communication entity A13 may first determine whether the terminal 100 is currently performing a delay-sensitive service.
  • Delay-sensitive services can be voice services, telemetry services, teleconference services, or interactive game services. If the terminal 100 is performing a delay-sensitive service, the communication entity A13 disconnects it from the network side in order to initiate the RRC connection re-establishment, which will affect the user's service experience. In order to avoid or reduce the impact on the user's service experience, the communication entity A13 can actively disconnect the connection with the network side under the premise that the terminal 100 does not execute the delay-sensitive service, and then initiate the RRC connection re-establishment.
  • the radio link control (radio link control, RLC) layer can identify the service type to which the data packet belongs, and thus can determine Whether the data packet belongs to the data of a delay-sensitive service (for example, voice service, telemetry service, teleconference service or interactive game service). If the data packet belongs to a delay-sensitive service, it means that the terminal 100 is performing a delay-sensitive service.
  • a delay-sensitive service for example, voice service, telemetry service, teleconference service or interactive game service.
  • step 411 and subsequent steps may be executed.
  • the communication entity A13 may also perform step 410b.
  • the communication entity A13 may also perform step 410c.
  • the communication entity A13 may also perform step 410d.
  • the communication entity A13 performs step 411 and subsequent steps.
  • step 701 an RRC connection can be established between the access network devices 210 of the communication entity A13.
  • step 701 includes step 412, step 413, and step 414 in FIG. 4C.
  • the access network device 210 may add a secondary cell to the terminal 100 based on measurement when the communication entity A13 is connected to the access network device 210. details as follows.
  • the access network device 210 may perform step 702 to send the measurement control message of the event B1 to the communication entity A13.
  • the communication entity A13 may search for the cell provided by the access network device 220 in response to the measurement control message of the event B1.
  • the communication entity A13 may perform step 703 to send a measurement report of the event B1 to the access network device 210.
  • the measurement report of event B1 is used to report to the access network device 210 the signal quality of the neighboring cell of the different system measured by the communication entity A13, that is, report to the access network device 210 the cell provided by the access network device 220 measured by the communication entity A13 Signal quality.
  • the signal quality of the cell can be characterized by the reference signal receiving power (RSRP) of the cell.
  • the signal quality of the cell may be characterized by the reference signal received quality (RSRQ) of the cell.
  • the signal quality of the cell can be characterized by the signal to interference plus noise ratio (SINR) of the cell.
  • the signal quality of the cell may be characterized by the received signal strength indication (RSSI) of the cell.
  • the signal quality of the cell may be jointly characterized by two or more of the RSRP, RSRQ, SINR, and RSSI of the cell.
  • the access network device 210 may perform step 704 to send an SgNB addition request (addition request) to the access network device 220.
  • SgNB refers to gNB used for secondary nodes.
  • the access network device 210 may be an eNB, serving as a master node, and may be called a MeNB (master eNB).
  • the access network device 220 may be a gNB, used as a secondary node, and may be called an SgNB (secondary gNB).
  • the access network device 220 may perform step 705 to send an SgNB addition request acknowledgement (addition request acknowledge) message to the access network device 210.
  • the access network device 210 may perform step 706 to send a radio resource control (radio resource control, RRC) connection reconfiguration (connection reconfiguration) request to the communication entity A13.
  • RRC radio resource control
  • the communication entity A13 may perform step 707 to send an RRC connection reconfiguration complete (connection reconfiguration complete) message to the access network device 210.
  • the access network device 210 may perform step 708 to send an SgNB reconfiguration complete (reconfiguration complete) message to the access network device 220.
  • Step 709 may be used between the terminal 100 and the access network device 220 to perform a random access procedure.
  • the random access procedure can refer to the above introduction, and will not be repeated here.
  • the communication entity A13 can be connected to the access network device 220.
  • the RRC connection between the communication entity A13 and the access network device 220 is established.
  • the access network device 210 adds a secondary cell (SCG) to the communication entity A13.
  • SCG secondary cell
  • the access network device 210 is an eNB and the access network device 220 is a gNB
  • the communication entity A13 enters the EN-DC state, that is, the terminal 100 enters the EN-DC state through the user identity A12.
  • the access network device 210 may perform step 710 to send an SgNB status transfer (status transfer) to the access network device 220.
  • the service gateway (S-GW) in the core network 230, the access network device 210, and the access network device 220 may perform data forwarding in step 711.
  • the access network device 210, the access network device 220, and the core network 230 may perform a path update procedure.
  • the path update procedure may specifically include the following steps.
  • the access network device 220 may send an evolved radio access bearer (E-RAB) modification indication (evolved radio access bearer, E-RAB) modification indication to the mobility management entity (mobility management entity, MME) in the core network 230;
  • E-RAB evolved radio access bearer
  • MME mobility management entity
  • Step 713 The MME sends a bearer modication request to the S-GW;
  • Step 714 The serving gateway sends an end marker packet to the access network device 210, and the access network device sends an end marker packet to the access network device 220.
  • Step 715 The MME sends an E-RAB modification confirmation (modification confirm) message to the access network device 210.
  • the communication entity A13 accesses the core network 230 according to the wireless network provided by the access network device 220.
  • the access network device 210 may blindly add a secondary cell for the communication entity A13 when the communication entity A13 is connected to the access network device 210. Still referring to FIG. 7, in the process of blindly adding secondary cells, after the communication entity A13 is connected to the access network device 210 through step 701, the access network device 210 does not perform step 702 (correspondingly, the communication entity A13 does not perform Step 703), but step 704 and subsequent steps can be performed directly. In other words, compared to adding a secondary cell based on measurement, blindly adding a secondary cell eliminates step 702 and step 704.
  • step 704 and subsequent steps in the solution of blindly adding a secondary cell reference may be made to the above description of steps 704 to 715, which will not be repeated here.
  • the communication entity A13 can re-access the 5G cell. In other words, through the solution shown in FIG. 7, the communication entity A13 can re-add the SCG.
  • the status bar of the terminal 100 may display the 4G and 5G dual network icon 501 corresponding to the SIM card A1.
  • the terminal 100 may transmit service data, such as a video stream of high-definition video, through a 5G network.
  • service data such as a video stream of high-definition video
  • adding the SCG to the communication entity A13 by the access network device 210 may fail.
  • the communication entity A13 may perform step 415 to determine whether the SCG addition is successful.
  • the scheme for judging whether adding SCG is successful can be as follows.
  • the communication entity A13 determines whether the signal quality of the neighboring cell of the different system is higher than the threshold when measuring the neighboring cell of the different system in response to the B1 event measurement control message. If the signal quality of the neighboring cell of the system is not higher than the threshold, it can be determined that the SCG addition has failed. In another example, the communication entity A13 may determine whether the RRC connection reconfiguration request is received when the timer expires, and if the RRC connection reconfiguration request is not received, it may determine that the SCG addition has failed. In another example, the communication entity A13 may determine whether the random access procedure in step 709 has failed. If the random access procedure in step 709 fails (for example, no random access response is received when the timer expires), it can be determined that the SCG addition fails. and many more. I won't list them all here.
  • the communication entity A13 of the access network device 210 may perform step 416, and may include the 4G cell where it currently resides on the temporary blacklist.
  • the communicating entity A13 no longer triggers RRC connection re-establishment, that is, steps 411, 412, etc., are no longer executed, to avoid RRC connection re-establishment caused by repeated failures of adding SCG Repeatedly initiated.
  • the communication entity A13 may clear the temporary blacklist.
  • the communication entity A13 may clear the temporary blacklist.
  • the dual-card terminal can actively disconnect the RRC connection between the primary card and the network side when the service of the secondary card ends, and initiate the RRC connection re-establishment through the primary card, thereby triggering
  • the network side adds a secondary cell to the main card of the terminal as soon as possible to improve the user's network experience.
  • an embodiment of the present application provides a terminal 800, and the terminal 800 may be configured with two SIM cards.
  • the terminal 800 may include a processor 810, a memory 820, and a transceiver 830.
  • the memory 820 stores instructions, and the instructions can be executed by the processor 810.
  • the terminal 800 can perform the operations performed by the terminal in the foregoing method embodiments, for example, the operations performed by the terminal 100 in FIG. 4C.
  • the processor 810 may perform data processing operations
  • the transceiver 830 may perform data sending and/or receiving operations.
  • an embodiment of the present application provides a chip system 900, which can be applied to a terminal configured with two SIM cards.
  • One of the two SIM cards can be used as a primary card, and the other can be used as a secondary card.
  • the chip system 900 includes: a processor 910 and an interface circuit 920.
  • the processor 910 is connected to the interface circuit 920, and is configured to perform operations performed by the terminal in the foregoing method embodiments, such as operations performed by the terminal 100 in FIG. 4C.
  • the chip system 900 further includes a memory 930. Instructions are stored in the memory, and the instructions can be executed by the processor 910. When the instruction is executed by the processor 90, the chip system 900 can execute the operations performed by the terminal in the foregoing method embodiments, for example, the operations performed by the terminal 100 in FIG. 4C.
  • the processor in the embodiment of the present application may be a central processing unit (central processing unit, CPU), or other general-purpose processors, digital signal processors (digital signal processors, DSP), and application-specific integrated circuits. (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof.
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the method steps in the embodiments of the present application can be implemented by hardware, and can also be implemented by a processor executing software instructions.
  • Software instructions can be composed of corresponding software modules, which can be stored in random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (programmable rom) , PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically erasable programmable read-only memory (electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM or well-known in the art Any other form of storage medium.
  • An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium.
  • the storage medium may also be an integral part of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium.
  • the computer instructions can be sent from a website site, computer, server, or data center to another website site via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) , Computer, server or data center for transmission.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

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Abstract

本说明书涉及移动通信技术领域，具体涉及一种网络接入方法及终端。该方法应用于配置有第一SIM卡和第二SIM卡的终端，终端通过第一SIM卡连接主接入网设备和辅接入网设备，辅接入网设备为终端在主接入网设备的协助下连接的；该方法包括：当终端通过第二SIM卡进行第一业务时，终端断开终端和辅接入网设备之间的RRC连接；终端确定第一业务结束；终端主动断开终端和主接入网设备之间的RRC连接，并发送RRC连接重建立请求，以便终端通过第一SIM卡在主接入网设备的协助下重新连接到辅接入网设备。通过该方法，终端在副卡的业务结束时，可以主动发送RRC连接重建立请求，以触发网络侧为主卡添加辅小区，改善了用户的网络体验。

Description

一种网络接入方法及终端
本申请要求于2020年05月14日提交中国国家知识产权局、申请号为202010405578.0、申请名称为“一种网络接入方法及终端”，以及于2020年06月15日提交中国国家知识产权局、申请号为202010544883.8、申请名称为“一种网络接入方法及终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本说明书涉及移动通信技术领域，具体涉及一种网络接入方法及终端。
背景技术
第五代(5th generation，5G)网络架构可以分为非独立架构(non stand-alone，NSA)和独立架构(stand-alone，SA)两种组网方式。NSA组网方式是在长期演进(long term evolution，LTE)的基础上增加5G载波，该5G载波可以用于承载用户面数据。
对于NSA组网方式，第三代合作伙伴计划(third generation partnership project，3GPP)版本(release，R)15定义了长期演进(long term evolution，LTE)和新空口(new radio，NR)的双连接(dual connectivity，DC)框架，其中，包括演进型的统一陆地无线接入网络(evolved universal terrestrial radio access network，E-UTRAN)-NR双连接(E-UTRA-NR dual connectivity，EN-DC)架构。在5G网络部署的早期，多数运营商选用EN-DC架构作为NSA的组网方式。EN-DC架构不用新增第五代(5th generation，5G)核心网,只需要新增5G基站，跟现有的第四代(4th generation，4G)基站协同，为终端提供5G+4G的联合接入，当终端处于EN-DC状态时，同时接入4G小区和5G小区，其中，4G小区可以称为主小区组(master cell group，MCG)，5G小区可以称为辅小区组(secondary cell group，SCG)。
目前，有些终端可以支持双用户识别模块(subscriber identification module，SIM)卡，从而可以实现来自不同网络的业务，即语音、彩信、短信和数据等业务。双SIM卡中的一个SIM卡可以作为主卡，另一个SIM卡可以作为副卡。其中，主卡是指默认数据业务卡，即终端的数据业务默认通过主卡对应的网络进行传输。当主卡处于EN-DC状态时，受限于终端的实现方案，副卡在执行相关业务(例如语音业务、彩信业务等)时，主卡会释放SCG。在主卡释放SCG后，需要网络侧发起SCG添加流程，才能使主卡重新接入5G小区。若网络侧长时间不发起SCG添加流程，主卡可能长时间接入不到5G小区，从而影响用户的网络体验。
发明内容
本申请实施例提供了一种网络接入方法和终端，终端可以主动发起RRC连接重建立，以触发网络侧为终端添加辅小区，改善用户的网络体验。
第一方面，本申请实施例提供了一种网络接入方法，其可应用于配置有两张SIM卡的终端，该两张SIM卡中的一张作为主卡，另一张作为副卡。终端通过主卡连接主接入网设备和辅接入网设备，辅接入网设备为该终端在主接入网设备的协助下连接的。该方法包括：当终端通过副卡进行第一业务时，终端断开终端和辅接入网设备之间的RRC连接；终端确定第一业务结束；终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求，以便终端通过主卡在主接入网设备的协助下重新连接到辅接入网设备。
也就是说，在说明书实施例提供的网络接入方法中，在终端的主卡和辅接入网设备之间的连接，因副卡进行业务而断开的情况下，在副卡进行的业务结束时或之后，终端可以主动断开主卡和主接入网设备之间的连接，并通过主卡向主接入网设备发送连接重建立请求，从 而可以触发主接入网设备尽快协助终端通过主卡连接到辅接入网设备。
在一种可能的实现方式中，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求包括：当终端在第一业务结束时通过主卡驻留的小区支持双连接时，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求。
也就是说，在该实现方式中，在通过主卡驻留的小区支持双连接时，才断开与主接入网设备之间的连接。可以理解，在小区不支持双连接的情况下，终端难以通过主卡连接到辅接入网设备。因此，在该实现方式中，在小区不支持双连接的情况下，不再断开与主接入网设备之间的连接，改善用户通信体验。
在一种可能的实现方式中，该双连接为统一陆地无线接入网络-新空口双连接EN-DC。
在一种可能的实现方式中，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求包括：当终端通过主卡在第一时间段内没有接收到事件B1的测量控制消息或RRC连接重配置请求时，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求；第一时间段为在第一业务结束时起始的时间段。
也就是说，在该实现方式中，在副卡进行的业务结束后，终端可以先等待网络侧下发的事件B1的测量控制消息或RRC连接重配置请求。若在一定时间内没有等待网络侧下发的事件B1的测量控制消息或RRC连接重配置请求，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求，从而避免了和网络侧正常下发的事件B1的测量控制消息或RRC连接重配置请求。
在一种可能的实现方式中，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求包括：当在第二时间段内终端通过副卡进行至少一种业务中的业务的总次数小于或等于n次时，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求，第二时间段为在第一业务结束时终止的时间段，第一业务为至少一种业务中的一种业务。
也就是说，在该实现方式中，在特定时间长内副卡进行可导致主卡释放辅小区的业务的总次数不超过预设次数时，终端向主接入网设备发送RRC连接重建立请求，从而避免了因频繁向主接入网设备发送RRC连接重建立请求而导致网络侧统计数据异常。
在一种可能的实现方式中，该至少一种业务包括以下至少一种：
副卡对应的语音业务，副卡对应的彩信业务。
在一种可能的实现方式中，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求包括：当终端没有运行时延敏感应用时，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求；或者，当终端没有执行时延敏感业务时，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求。
也就是说，在该实现方式中，在确定终端没有运行时延敏感应用或终端没有执行时延敏感业务的情况下，才主动断开终端和主接入网设备之间的连接，以避免终端和主接入网设备之间连接的断开对时延敏感应用或时延敏感业务的影响。
在一种可能的实现方式中，在终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求之后，该方法还包括：当终端通过主卡连接到辅接入网设备失败时，终端将终端通过主卡当前驻留的小区列入第一名单；其中，当终端通过主卡 卡驻留在第一名单中的小区时，终端不再向主接入网设备发送RRC连接重建立请求。
也就是说，在该实现方式中，可以将终端通过主卡尝试接入辅接入网设备失败的小区列入黑名单，当终端通过主卡驻留在黑名单中的小区时，终端不再向主接入网设备发送RRC连接重建立请求，以避免接入辅接入网设备反复失败导致的RRC连接重建立反复发起。
在一种可能的实现方式中，该方法还包括：当终端发生设备重启时，或当终端通过主卡接入的无线网络的跟踪区变化时，终端清空第一名单。
在一种可能的实现方式中，主接入网设备为4G接入网设备，辅接入网设备为5G接入网设备。
也就是说，在该实现方式中，在终端的主卡接入的5G小区，因副卡进行业务而被释放的情况下，在副卡进行的业务结束时或之后，终端可以主动释放主卡接入的4G小区，并通过主卡向4G接入网设备发送连接重建立请求，从而可以触发主接入网设备尽快协助终端通过主卡接入5G小区，改善用户通信体验。
第二方面，本申请实施例提供了一种配置有两张SIM卡的终端，该两张SIM卡中的一张作为主卡，另一张作为副卡。终端通过主卡连接主接入网设备和辅接入网设备，辅接入网设备为该终端在主接入网设备的协助下连接的。终端包括：处理器、存储器和收发器；存储器用于存储计算机指令；当终端运行时，处理器执行计算机指令，使得终端执行：当终端通过副卡进行第一业务时，终端断开终端和辅接入网设备之间的RRC连接；终端确定第一业务结束；终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求，以便终端通过主卡在主接入网设备的协助下重新连接到辅接入网设备。
在一种可能的实现方式中，处理器执行计算机指令，使得终端还执行：当终端在第一业务结束时通过主卡驻留的第一小区支持双连接时，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求。
在一种可能的实现方式中，该双连接为统一陆地无线接入网络-新空口双连接EN-DC。
在一种可能的实现方式中，处理器执行计算机指令，使得终端还执行：当终端通过主卡在第一时间段内没有接收到事件B1的测量控制消息或RRC连接重配置请求时，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求；第一时间段为在第一业务结束时起始的时间段。
在一种可能的实现方式中，处理器执行计算机指令，使得终端还执行：当在第二时间段内终端通过副卡进行至少一种业务中的业务的总次数小于或等于n次时，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求，第二时间段为在第一业务结束时终止的时间段，第一业务为至少一种业务中的一种业务。
在一种可能的实现方式中，至少一种业务包括以下至少一种：
副卡对应的语音业务，副卡对应的彩信业务。
在一种可能的实现方式中，处理器执行计算机指令，使得终端还执行：当终端没有运行时延敏感应用时，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求；或者，当终端没有执行时延敏感业务时，终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求。
在一种可能的实现方式中，在终端主动断开终端和主接入网设备之间的RRC连接，并向主接入网设备发送RRC连接重建立请求之后，处理器执行计算机指令，使得终端还执行：当终端通过主卡连接到辅接入网设备失败时，终端将终端通过主卡当前驻留的小区列入第一名单；其中，当终端通过主卡驻留在第一名单中的小区时，终端不再向主接入网设备发送RRC 连接重建立请求。
在一种可能的实现方式中，处理器执行计算机指令，使得终端还执行：当终端发生设备重启时，或当终端通过主卡接入的无线网络的跟踪区变化时，终端清空第一名单。
在一种可能的实现方式中，主接入网设备为4G接入网设备，辅接入网设备为5G接入网设备。
可以理解，第二方面提供的终端用于执行第一方面提供的方法，因此，其所能达到的有益效果可以参考前述相应的有益效果。
第三方面，本申请实施例提供了一种芯片系统，包括：处理器和接口电路，处理器和接口电路连接，用于执行指令以使得安装有该芯片系统的终端执行第一方面所提供的方法。
第四方面，本申请实施例提供了一种计算机存储介质，该计算机存储介质包括计算机指令，当该计算机指令在终端上运行时，使得终端执行第一方面所提供的方法。
第五方面，本申请实施例提供了一种计算机程序产品，该计算机程序产品包含的程序代码被终端中的处理器执行时，实现第一方面所提供的方法。
本申请实施例提供的网络接入方法和终端，配置有双卡的终端在副卡的业务结束时，可以主动断开主卡和网络侧的RRC连接，并通过主卡发送RRC连接重建立请求，从而可以触发网络侧为终端的主卡尽快添加辅小区，改善用户的网络体验。
附图说明
图1是本申请实施例可适用的一种网络系统示意图；
图2为本申请实施例提供的一种终端的结构示意图；
图3为本申请实施例提供的一种用户界面示意图；
图4A为本申请实施例提供的一种网络接入方法的流程图；
图4B为本申请实施例提供的一种网络接入方法的流程图；
图4C为本申请实施例提供的一种网络接入方法的流程图；
图5A为本申请实施例提供的一种用户界面示意图；
图5B为本申请实施例提供的一种用户界面示意图；
图5C为本申请实施例提供的一种用户界面示意图；
图5D为本申请实施例提供的一种用户界面示意图；
图5E为本申请实施例提供的一种用户界面示意图；
图6A为本申请实施例提供的一种用户界面示意图；
图6B为本申请实施例提供的一种用户界面示意图；
图7为本申请实施例提供的一种网络侧为终端添加辅小区的流程示意图；
图8为本申请实施例提供的一种终端的结构示意图；
图9为本申请实施例提供的一种芯片系统的结构示意图。
具体实施方式
下面将结合附图，对本发明实施例中的技术方案进行描述。显然，所描述的实施例仅是本说明书一部分实施例，而不是全部的实施例。
在本说明书的描述中“一个实施例”或“一些实施例”等意味着在本说明书的一个或多个实施例中包括结合该实施例描述的特定特征、结构或特点。由此，在本说明书中的不同之处出现的语句“在一个实施例中”、“在一些实施例中”、“在其他一些实施例中”、“在另外一些实施例中”等不是必然都参考相同的实施例，而是意味着“一个或多个但不是所有的实施例”，除非是以其他方式另外特别强调。
其中，在本说明书的描述中，除非另有说明，“/”表示或的意思，例如，A/B可以表示A或B；本文中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，在本说明书实施例的描述中，“多个”是指两个或多于两个。
在本说明书的描述中，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”，除非是以其他方式另外特别强调。
在对本申请实施例提供的技术方案进行介绍之前，首先对本申请实施例提供的方案所涉及的技术背景和应用架构进行说明。
第五代网络架构可以分为NSA和独立架构SA两种组网方式。在5G移动通信系统的部署早期，多数运营商选用EN-DC架构作为NSA的组网方式。EN-DC架构为3GPP定义的一种双连接架构，在EN-DC架构下，终端可以连接到4G的接入网设备，并在4G接入网设备的协助下连接到5G的接入网设备，由此实现同时接入4G小区和5G小区，使得用户具有较佳的通信体验。
当前越来越多的手机支持同时插入两张SIM卡，例如，一张SIM卡用于私人业务，另一张SIM卡用于工作；或者，一张SIM卡用于数据业务，另一张SIM卡用于语音业务。两张SIM卡中的一个SIM卡可以作为主卡，另一个SIM卡可以作为副卡。其中，主卡是指默认数据业务卡，即终端的数据业务默认通过主卡对应的网络进行传输。当主卡支持EN-DC时，主卡可以同时接入4G小区和5G小区。受限于手机的实现方案，副卡在执行相关业务(例如语音业务、彩信业务等)时，主卡会释放5G小区。
目前，网络侧通过下发无线资源控制(radio resource control，RRC)连接重配(connection reconfiguration)请求或者事件B1(event B1)测量控制消息来触发终端添加SCG的流程。在双卡场景下，在副卡业务结束后，网络侧可能长时间不下发RRC连接重配请求或者事件B1测量控制消息，使得主卡长时间回不到5G网络，使得用户不能充分体验5G网络更稳定、更高速、更可靠的网络性能，导致用户通信体验较差。
为此，本申请实施例提供了一种网络接入方法，在副卡的业务导致主卡释放SCG的情况下，当副卡的业务结束时，主卡可以主动向网络侧发送RRC连接重建立请求，以重新建立主卡和网络侧间的RRC连接，由此，触发网络侧向主卡下发RRC连接重配请求，以为主卡添加SCG，使得主卡可以尽快回到5G网络，改善用户通信体验。
图1示出了本申请实施例提供的网络接入方法可应用的一种无线通信系统。该无线通信系统可以包括：终端100、接入网设备(access network equipment)210、接入网设备220、接入网设备300。其中，接入网设备210和接入网设备连接到核心网230。
接入网设备210(或接入网设备220或接入网设备300)可以是时分同步码分多址(time division synchronous code division multiple access，TD-SCDMA)系统中的基站收发台(base transceiver station，BTS)，也可以是LTE系统中的演进型基站(evolutional node B，eNB)，也可以是5G系统系统中的下一代基站(next generation node B，gNB)。另外，接入网设备210(或接入网设备220或接入网设备300)也可以是接入点(access point，AP)、传输节点(trans TRP)、中心单元(central unit，CU)或接入网实体，并且可以包括以上接入网实体的功能中的一些或所有功能。
接入网设备210和接入网设备220可以为EN-DC架构下的网络设备。具体而言，接入网 设备210可以为eNB，接入网设备220可以为gNB。接入网设备210和接入网设备220可以共同连接到4G核心网(evolved packet core，EPC)230。
终端100可以分布在图1所示的无线通信系统中，可以是静止的，也可以是移动的。终端100包括但不限于：手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。
图2示出终端100一种可能的硬件结构。
终端100可以包括处理器110，外部存储器接口120，内部存储器121，通用串行总线(universal serial bus，USB)接口130，充电管理模块140，电源管理模块141，电池142，天线1，天线2，移动通信模块150，无线通信模块160，音频模块170，扬声器170A，受话器170B，麦克风170C，耳机接口170D，传感器模块180，按键190，马达191，指示器192，摄像头193，显示屏194，以及用户标识模块(subscriber identification module，SIM)卡接口195等。其中传感器模块180可以包括压力传感器180A，陀螺仪传感器180B，气压传感器180C，磁传感器180D，加速度传感器180E，距离传感器180F，接近光传感器180G，指纹传感器180H，温度传感器180J，触摸传感器180K，环境光传感器180L，骨传导传感器180M等。
可以理解的是，本申请实施例示意的结构并不构成对终端100的具体限定。在本申请另一些实施例中，终端100可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
处理器110可以包括应用处理器(application processor，AP)和调制解调器(modem)，
在一些实施例中，处理器110还可以包括图形处理器(graphics processing unit，GPU)，图像信号处理器(image signal processor，ISP)，控制器，视频编解码器，数字信号处理器(digital signal processor，DSP)，基带处理器，和/或神经网络处理器(neural-network processing unit，NPU)等中的一项或多项。其中，不同的处理单元可以是独立的器件，也可以集成在一个或多个处理器中。
终端100的无线通信功能可以通过天线1，天线2，移动通信模块150，无线通信模块160，调制解调器以及基带处理器等实现。
天线1和天线2用于发射和接收电磁波信号。终端100中的每个天线可用于覆盖单个或多个通信频带。不同的天线还可以复用，以提高天线的利用率。例如：可以将天线1复用为无线局域网的分集天线。在另外一些实施例中，天线可以和调谐开关结合使用。
移动通信模块150可以提供应用在终端100上的包括2G/3G/4G/5G等无线通信的解决方案。移动通信模块150可以包括至少一个滤波器，开关，功率放大器，低噪声放大器(low noise amplifier，LNA)等。移动通信模块150可以由包括天线1的至少两根天线接收电磁波，并对接收的电磁波进行滤波，放大等处理，传送至调制解调器进行解调。移动通信模块150还可以对经调制解调器调制后的信号放大，经天线1转为电磁波辐射出去。在一些实施例中，移动通信模块150的至少部分功能模块可以被设置于处理器110中。在一些实施例中，移动通信模块150的至少部分功能模块可以与处理器110的至少部分模块被设置在同一个器件中。
调制解调器可以包括调制器和解调器。其中，调制器用于将待发送的低频基带信号调制成中高频信号。解调器用于将接收的电磁波信号解调为低频基带信号。随后解调器将解调得 到的低频基带信号传送至基带处理器处理。低频基带信号经基带处理器处理后，被传递给应用处理器。应用处理器通过音频设备(不限于扬声器170A，受话器170B等)输出声音信号，或通过显示屏194显示图像或视频。在一些实施例中，调制解调器可以是独立的器件。在另一些实施例中，调制解调器可以独立于处理器110，与移动通信模块150或其他功能模块设置在同一个器件中。在另一些实施例中，移动通信模块150可以是调制解调器中的模块。
无线通信模块160可以提供应用在终端100上的包括无线局域网(wireless local area networks，WLAN)(如无线保真(wireless fidelity，Wi-Fi)网络)，蓝牙(bluetooth，BT)，全球导航卫星系统(global navigation satellite system，GNSS)，调频(frequency modulation，FM)，近距离无线通信技术(near field communication，NFC)，红外技术(infrared，IR)等无线通信的解决方案。无线通信模块160可以是集成至少一个通信处理模块的一个或多个器件。无线通信模块160经由天线2接收电磁波，将电磁波信号调频以及滤波处理，将处理后的信号发送到处理器110。无线通信模块160还可以从处理器110接收待发送的信号，对其进行调频，放大，经天线2转为电磁波辐射出去。
在一些实施例中，终端100的天线1和移动通信模块150耦合，天线2和无线通信模块160耦合，使得终端100可以通过无线通信技术与网络以及其他设备通信。所述无线通信技术可以包括全球移动通讯系统(global system for mobile communications，GSM)，通用分组无线服务(general packet radio service，GPRS)，码分多址接入(code division multiple access，CDMA)，宽带码分多址(wideband code division multiple access，WCDMA)，时分码分多址(time-division code division multiple access，TD-SCDMA)，长期演进(long term evolution，LTE)，第五代，新空口(new radio，NR)，BT，GNSS，WLAN，NFC，FM，和/或IR技术等。所述GNSS可以包括全球卫星定位系统(global positioning system，GPS)，全球导航卫星系统(global navigation satellite system，GLONASS)，北斗卫星导航系统(beidou navigation satellite system，BDS)，准天顶卫星系统(quasi-zenith satellite system，QZSS)和/或星基增强系统(satellite based augmentation systems，SBAS)。
SIM卡接口195用于连接SIM卡。SIM卡可以通过插入SIM卡接口195，或从SIM卡接口195拔出，实现和终端100的接触和分离。终端100可以支持N个SIM卡接口，N为大于1的正整数。SIM卡接口195可以支持Nano SIM卡，Micro SIM卡，SIM卡等。同一个SIM卡接口195可以同时插入多张卡。所述多张卡的类型可以相同，也可以不同。SIM卡接口195也可以兼容不同类型的SIM卡。SIM卡接口195也可以兼容外部存储卡。终端100通过SIM卡和网络交互，实现通话以及数据通信等功能。在一些实施例中，终端100采用eSIM，即：嵌入式SIM(embedded-SIM，eSIM)卡。eSIM卡可以嵌在终端100中，不能和终端100分离。
回到图1，终端100可以安装有SIM卡A1和SIM卡A2，即终端100配置有双SIM卡。SIM卡A1可以对应运营商A11，SIM卡A2可以对应运营商A21。示例性的，运营商A11和运营商A21可以为不同的运营商。例如，运营商A11可以为中国移动
Figure PCTCN2021093888-appb-000001
运营商A21可以为中国联通
Figure PCTCN2021093888-appb-000002
示例性的，运营商A11和运营商A21可以为同一个运营商，例如运营商A11和运营商A21为中国联通
Figure PCTCN2021093888-appb-000003
为了方便描述，本申请实施例可以将SIM卡以及其演进都统称为SIM卡。在一个例子中，SIM卡可以是全球移动通信系统(global system for mobile communications，GSM)数字移动电话用户的身份识别卡。在一个例子中，SIM卡也可以是用于存储用户的身份识别码和密钥，并支持GSM系统对用户的鉴权。在一个例子中，SIM卡也可以是全球用户识别卡(universal  subscriber identity module，USIM)，也可以称为升级SIM卡。等等，此处不再一一列举。
SIM卡可以理解为终端100接入网络的钥匙。可以理解，SIM卡具有运营商签约用户的签约信息或者说网络使用权限，其代表用户身份。终端100可凭借SIM卡代表的用户身份接入到移动网络。示例性的，SIM卡代表的用户身份可以为用户标识(如国际移动用户标识(international mobile subscriber identity，IMSI)或临时移动用户标识(temporary mobile subscriber identity，TMSI)等)。在本申请实施例中，可以将SIM卡A1对应的用户身份称为用户身份A12，SIM卡A2对应的用户身份称为用户身份A22。终端100使用SIM卡(例如SIM卡A1或SIM卡A2)接入网络，也可以称为终端100通过用户身份(用户身份A12或用户身份A22)接入网络。终端100通过用户身份接入网络是指终端凭借该用户身份对应的签约信息或网络使用权限接入网络。
从网络侧的角度来看，SIM卡(例如SIM卡A1和SIM卡A2)在逻辑上对应网络侧服务的通信实体，例如4G或5G移动通信系统中的用户设备(user equment，UE)。该通信实体通过该SIM卡对应的用户身份和网络侧进行通信。SIM卡A1和SIM卡A2可以被网络侧识别或看作两个不同的通信实体，即使SIM卡A1和SIM卡A2安装在同一个物理实体(即终端100)中。换言之，终端100通过不同用户身份接入网络时，网络侧可以将终端100识别为或看做不同的通信实体。终端100配置有SIM卡A1和SIM卡A2时，终端100可以包括分别对应于SIM卡A1和SIM卡A2的两个通信实体。其中，可以将对应于SIM卡A1(用户身份A12)的通信实体称为通信实体A13，可以将对应于SIM卡A2(用户身份A22)的通信实体称为通信实体A23。通信实体A13为终端100中用于通过用户身份A12进行业务的实体。终端100通过用户身份A12和网络侧进行通信，可以称为通信实体A13和网络侧进行通信。通信实体A23为终端100中用于通过用户身份A22进行业务的实体。终端100通过用户身份A22和网络侧进行通信，可以称为通信实体A23和网络侧进行通信。在一些实施例中，通信实体A13和通信实体A23可以为终端100调制解调器中的功能实体或逻辑实体。
在一些实施例中，终端100可以通过用户身份A12和用户身份A22分别连接不同的接入网设备。换言之，通信实体A13和通信实体A23可以分别连接不同的接入网设备。例如，如图1所示，通信实体A13连接接入网设备210，通信实体A23连接到接入网设备300。
在一些实施例中，终端100可以通过用户身份A12和用户身份A22连接同一接入网设备，换言之，通信实体A13和通信实体A23可以连接同一接入网设备。例如通信实体A13和通信实体A23连接接入网设备210(未示出)。
在本申请实施例可以设定SIM卡A1为主卡。示例性的，终端100可以响应于用户的操作，确定SIM卡A1为主卡。在一个例子中，参阅图3，终端100可以显示双卡管理界面，并响应于用户起始的针对SIM卡A1对应的功能区的操作，将SIM卡A1设置为主卡。当SIM卡A1被设置为主卡时，SIM卡A2可以称为副卡，通信实体A13可以称为主卡modem，通信实体A23可以称为副卡modem。
接下来，在不同实施例中，对本申请实施例提供的网络接入方法进行示例说明。
图4A示出了一些实施例提供的网络接入方法的流程图。
如图4A所示，副卡业务开始时，可以触发主卡(或者说主卡modem)由5G回到LTE。也就是说，在副卡业务开始之前，主卡可以同时接入5G小区和LTE小区。当副卡业务开始时，主卡可以释放掉5G小区，保持接入LTE小区。具体可以参考下文对图4C中步骤400-步骤406的介绍，在此不再赘述。
当副卡业务结束时或之后，主卡可以主动触发回到5G的流程。也就是说，当副卡业务 结束时或之后，主卡可以主动触发网络侧为主卡添加5G小区，从而可以尽快接入到5G小区，改善用户的通信体验。具体可以参考下文对图4C中步骤407-步骤411的介绍，在此不再赘述。
在本申请实施例提供的网络接入方法可以在副卡业务结束时或之后，可以主动触发主卡回到5G的流程，从而使得主卡可以尽快回到5G，改善用户在双卡场景下的通信体验。
图4B示出了另一些实施例提供的网络接入方法的流程图。
副卡业务导致主卡由NSA回到LTE。也就是说，当副卡业务开始时，主卡可以释放掉5G小区，保持接入LTE小区。
当副卡业务结束时或之后，终端可以判断主卡当前LTE小区是否支持EN-DC，并且在时间T内没有添加SCG。其中，主卡时间T内没有添加SCG是指时间T内网络侧有没有触发为主卡添加SCG的流程。
也就是说，终端可以判断主卡当前驻留的LTE小区是否支持EN-DC。具体可以参考下文对图4C中步骤410a的介绍。
若主卡当前驻留的LTE小区不支持EN-DC，终端不再执行后续步骤。
若主卡当前驻留的LTE小区支持EN-DC，终端可以判断在副卡业务结束时开始起算的时间段T内，网络侧有没有触发为主卡添加SCG的流程。具体可以参考下文对图4C中步骤410b的介绍。
若在时间段T内，网络侧有没有触发为主卡添加SCG的流程，终端可以判断T1时间内副卡业务次数是否超过n次。具体可以参考下文对图4C中步骤410c的介绍，在此不再赘述。
若T1时间内副卡业务次数超过n次，终端不再执行后续步骤。
若T1时间内副卡业务次数没有超过n次，终端可以判断时延敏感类白名单应用是否运行中。具体可以参考下文对图4C中步骤410d的介绍，在此不再赘述。
若延敏感类白名单应用在运行中，终端不再执行后续步骤。
若延敏感类白名单应用不在运行中，终端可以主动触发主卡的LTE发起重建立。具体可以参考下文对图4C中步骤411-步骤414的介绍，在此不再赘述。
终端可以判断主卡重建立后是否成功添加SCG。具体可以参考下文对图4C中步骤415的介绍，在此不再赘述。
若没有成功添加SCG，终端将主卡当前小区(即主卡当前驻留的小区)例如临时性黑名单，不再发起快速回5G重建立。具体可以参考上文对图4C中步骤416的介绍，在此不再赘述。
在本申请实施例提供的网络接入方法可以在副卡业务结束时或之后，可以主动触发主卡回到5G的流程，从而使得主卡可以尽快回到5G，改善用户在双卡场景下的通信体验。
接下来，结合图4C，以通信实体A13处于以接入网设备210为主节点的EN-DC状态，通信实体A23连接到接入网设备300，且接入网设备300为4G基站为例，对本申请实施例中的方案进行说明。
参阅图4C，在通信实体A13处于以接入网设备210为主节点的EN-DC状态下，通信实体A13和接入网设备210之间具有4G的RRC连接，通信实体13和接入网设备220之间具有5G的RRC连接。通信实体23和接入网设备200之间具有4G的RRC连接之间具有4G的RRC连接。由上所述，通信实体A13为主卡modem。即终端100的数据业务(例如终端100运行的第三方应用的数据业务)默认通过通信实体13和网络侧之间的链路进行传输。当通信实体A13处于EN-DC状态下时，用户可以体验5G的性能。示例性的，参阅图5A，通 信实体A13处于EN-DC状态，终端100的状态栏可以显示对应于SIM卡A1的4G和5G双网络图标501。终端100可以流畅地在线播放高清视频。
参阅图4C，通信实体A23可以执行步骤400，发起业务B1。
以业务B1为需要通过用户身份A22进行语音业务为例。示例性的，可以参阅图5B，终端100可以响应用户的操作，退出视频播放界面，显示拨号界面。用户可以在拨号界面输入想要拨打的电话号码，然后选择SIM卡A2进行拨打。响应于用户起始的拨打电话的操作，通信实体A23可以发起语音业务(业务B1)。
继续参阅图4C，当通信实体A23发起业务B1时，还可以执行步骤401，向仲裁实体传递占用发信机请求，占用发信机请求包括业务B1的标识。仲裁实体可以响应占用发信机请求，执行步骤402a，确定通信实体A23占用发信机。从而使得通信实体A23可以进行业务B1。例如，业务B1为语音业务时，通信实体A23可以进行拨号以及电话接通后的通话。
出于节省功耗和成本，通常，终端100配置有一套发信机。通信实体A13和通信实体A23通过时分复用(time division multiplexing，TDM)的方式轮流占用发信机。终端100还可以包括仲裁实体。示例性的，仲裁实体可以为终端100的调制解调器中的功能实体或逻辑实体。仲裁实体可以裁决通信实体A13和通信实体A23中的哪一个来占用发信机。在SIM卡A1为主卡的情况下，仲裁实体裁决发信机默认由通信实体A13占用。当终端100需要进行业务B1时，通信实体A13向仲裁实体申请占用发信机器。
仲裁实体还可以执行步骤402b，确定业务B1为预设的至少一种业务中的一种。该至少一种业务可以包括进行时间较长或或业务数据量较大的业务，例如语音业务、彩信业务。而对于短信业务，其数据量较小，且发送或接收短信的时间较短，因此，短信业务不属于该至少一种业务中的业务。当通过用户身份A22进行的业务为该至少一种业务中的业务时，需要终端100从用户身份A13下的EN-DC状态回落到用户身份A12下的LTE状态。换言之，需要终端100断开通信实体A13和接入网设备220之间的5G的RRC连接，而仅保持通信实体A13和接入网设备210之间的4G的RRC连接。具体而言，仲裁实体通过步骤402b，确定业务B1为该至少一种业务中的一种时，仲裁实体可以执行步骤403，向通信实体A13发送5G链路释放通知。通信实体A13可以响应5G链路释放通知，执行步骤404，向接入网设备210发送SCG失败(SCG fail)消息。接入网设备210可以响应SCG失败消息，执行步骤405，向通信实体A13发送5G的RRC连接释放(RRC connection release)消息。通信实体A13可以响应5G的RRC连接释放消息，执行步骤406，释放5G的RRC连接。
通过上文描述可知，当通信实体A23进行业务B1，且业务B1为预设的至少一种业务中的一种时，通信实体A13和接入网设备220之间的5G的RRC连接被释放掉，即通信实体A13的辅小区被释放掉。通信实体A13仅保持了其和接入网设备210之间的4G的RRC连接。如图5C和图5D所示，可以设定业务B1为语音业务，在语音业务拨号期间以及电话接通后的通话期间，终端100的状态栏可以显示对应于SIM卡A1的4G网络图标502。
继续参阅图4C，通信实体A23可以执行步骤407，结束业务B1。示例性的，参阅图5D，以业务B1为语音业务为例。通信实体A23可以响应于用户起始的挂断操作，结束业务B1。
当通信实体A23结束业务B1时，还可以执行步骤408，向仲裁实体传递业务B1结束通知。仲裁实体可以响应业务B1结束通知，执行步骤409a，恢复通信实体A13占用发信机。换言之，当业务B1结束时，发信机再次由通信实体A13占用。
在业务B1执行期间以及业务B1结束时，通信实体A13可以保持其和接入网设备210之间的连接。为了使通信实体A13可以尽快连接到接入网设备220，当业务B1结束时，通信 实体A13可以主动断开其和接入网设备210之间的连接，并发起RRC连接重建立，以此来触发网络侧向通信实体A13下发RRC连接重配请求，从而可以快速为通信实体A13添加SCG。接下来，进行具体说明。
在一些实施例中，当仲裁实体接收到业务B1结束通知时，仲裁实体可以向通信实体A13传递用于表示业务B1结束的消息或用于指示通信实体A13发送RRC连接重建立请求的消息，以便通信实体A13向接入网设备210发送RRC连接重建立请求。
在一个说明性示例中，如图4C所示，当仲裁实体接收到业务B1结束通知时，可以执行步骤409b，向通信实体A13传递业务B1结束通知。通信实体A13在接收到业务B1结束通知之后，可以执行步骤411、412等后续步骤。
在一个说明性示例中，当仲裁实体接收到业务B1结束通知时，仲裁实体可以向通信实体A13传递RRC连接重建立请求发送指令。通信实体A13在接收到RRC连接重建立请求发送指令之后，可以执行步骤411、412等后续步骤。
在一些实施例中，当通信实体A23检测到业务B1的结束指示时，可以直接向通信实体A13传递用于表示业务B1结束的消息或用于指示通信实体A13发送RRC连接重建立请求的消息，以便通信实体A13向接入网设备210发送RRC连接重建立请求。在一个例子中，用于表示业务B1结束的消息可以为业务B1结束通知。在一个例子中，用于指示通信实体A13发送RRC连接重建立请求的消息可以为RRC连接重建立请求发送指令。
可以理解，在发送RRC连接重建立请求之前，需要先释放已建立的RRC连接。因此，当通信实体A13接收到用于表示业务B1结束的消息或用于指示通信实体A13发送RRC连接重建立请求的消息时或之后，通信实体A13可以先执行步骤411，主动释放通信实体A13和接入网设备210之间的4G的RRC连接。可以理解，关于RRC连接的释放，通常是在接收到网络侧下发的RRC连接释放消息时，响应于该RRC连接释放消息，释放RRC连接。而在步骤411中，通信实体A13可以在网络侧不下发RRC连接释放消息的情况下，主动释放RRC连接。
通信实体13主动释放RRC连接后，可以执行步骤412，向接入网设备210发送RRC连接重建立请求。接入网设备210接收到RRC连接重建立请求，可以响应RRC连接重建立请求，执行步骤413，向通信实体A13发送RRC连接重建立消息。通信实体A13在接收到RRC连接重建立消息后，可以进行无线资源配置、设置RRC连接重建立完成消息的内容等。然后，可执行步骤414，向接入网设备210发送RRC连接重建立完成消息。由此，通信实体A13通过RRC连接重建立程序重新接入到接入网设备210提供的小区，可以触发接入网设备210为通信实体A13添加SCG。添加SCG的过程将在下文结合图7进行介绍，在此不再赘述。
在一些实施例中，在执行步骤411之前，通信实体A13可以先执行步骤410a，判断通信实体A13当前驻留的主小区是否支持EN-DC。示例性的，可以理解，由于5G频谱大多处于高频段，高频段网络信号覆盖范围较小。也就是说，接入网设备220提供的5G信号的覆盖范围可能小于接入网设备210提供的4G信号的覆盖范围，所以接入网设备210提供的小区中一个或多个小区可能因为没有5G信号覆盖而不支持EN-DC。接入网设备210提供的小区中一个或多个小区也可以因为网络配置等原因而不支持EN-DC。换言之，接入网设备210提供的所有小区并非都支持EN-DC。
另外，在通信实体A23执行业务B1期间，终端100发生了位移或者通信实体A13驻留的4G小区的信号质量发送了变化，使得通信实体A13切换到了其他4G小区中。也就是说，在通信实体A23执行业务B1开始时和在通信实体A23执行的业务B1结束时，通信实体A13 驻留的4G小区可能不同。通过上段所述可知，在通信实体A23执行的业务B1结束时，通信实体A13驻留的4G小区有可能不支持EN-DC。因此，在执行步骤411之前，通信实体A13可以先判断其当前驻留的4G小区是否支持EN-DC。
在一个说明性示例中，通信实体A13可以根据其小区接入历史记录，确定当前驻留的4G小区是否支持EN-DC。历史上，每当通信实体A13接入到一个4G小区时，可以记录附着该4G小区时，是否接收到该4G小区所属的接入网设备下发的RRC连接重配请求。若接收到RRC连接重配请求，则说明该4G小区支持EN-DC。若没有接收到RRC连接重配请求，则说明该4G小区不支持EN-DC。由此，通信实体A13可以确定通信实体A13当前驻留的小区是否支持EN-DC。
示例性的，当通信实体A13当前驻留的小区支持EN-DC时，通信实体A13可以执行步骤411以及后续步骤。
在一些实施例中，在执行步骤411之前，通信实体A13执行步骤410b，判断当定时器C1超时时，通信实体A13是否接收到网络侧下发的SCG添加触发消息。该SCG添加触发消息具体可以为B1事件的测量控制消息或者RRC连接重配请求。可以理解，在业务B1结束时，或结束后的较低时间内，网络侧也有可能主动向通信实体A13下发B1事件的测量控制消息或者RRC连接重配请求，以触发为通信实体A13添加SCG的流程。为了避免和网络侧主动下发的B1事件的测量控制消息或者RRC连接重配请求，通信实体A13在执行步骤411之前，执行步骤410b。
在一个说明性示例中，定时器C1的时长可以通过主卡返回5G网络时长大数据确定。主卡返回5G时长可以为双卡场景下，副卡业务(该业务导致主卡释放SCG)结束时刻和主卡重新接入到5G网络的时刻之间的时长。可以统计或调研现有终端的主卡返回5G时长，得到主卡返回5G网络时长大数据。可以计算主卡返回5G时长大数据中各时长的分布。可以根据主卡返回5G时长大数据中各时长的分布确定定时器C1的时长。例如，可以将概率最大的时长设定为定时器C1的时长。
在一个说明性示例中，定时器C1的时长可以通过经验或实验预设，例如可以为2s的时长。
示例性的，当若在定时器C1计时期间，通信实体A13没有接收到B1事件的测量控制消息或者RRC连接重配请求，通信实体A13可以执行步骤411以及后续步骤。
在一些实施例中，在执行步骤411之前，通信实体A13可以先执行410c，判断时间段T1内，通信模块A23进行至少一种业务中的业务的总次数是否超过n次。时间段T1可以是指当通信实体A13接收到用于表示业务B1结束的消息或用于指示通信实体A13发送RRC连接重建立请求的消息时，向前起算的时间段。例如，时间段T1的时间长度为60秒，则时间段T1是指通信实体A13接收到用于表示业务B1结束的消息或用于指示通信实体A13发送RRC连接重建立请求的消息的时刻为终点，向前起算的60秒。在其他例子中，时间段T1的时间长度可以为120秒，或者为180秒，等等。n为预设值，例如可以为3次，也可以4次，等等。
步骤410c中的，进行至少一种业务中的业务的总次数是指将进行的至少一种业务中的业务进行累加。例如该至少一个业务包括语音业务、彩信业务。进行了1次语音业务和进行了2次彩信业务，则进行至少一种业务中的业务的总次数为3(1+2)。
可以理解，按照本申请实施例提供的网络接入方法的逻辑，每当通信实体A23进行的至少一种业务中的业务结束时或之后，通信实体A13触发RRC连接重建立。若短时间内，通 信实体A23进行的至少一种业务中的业务的次数较多，则使得RRC连接重建立的频繁发生，可导致网络侧统计数据异常。为了避免这种现象发生。在通信实体A13在执行步骤411之前，先执行步骤410c。若在短时间内，通信实体A23进行的至少一种业务中的业务的总次数没有过多(没有超过n次，n为自然数)，可触发RRC连接重建立。示例性的，此处的n可以为3，也可以为4，等等。在具体实现时，可以根据经验或实验预设n的大小。
在一些实施例中，在执行步骤411之前，通信实体A13可以先执行410d，判断终端100当前是否运行时延敏感应用。由于SIM卡A1为默认数据业务卡，终端100运行的应用的业务数据通过通信实体A13和网络侧之间的连接进行传输。为了触发RRC连接重建立，通信实体A13需要断开其和网络侧的连接，即执行步骤411。若终端100当前正在运行时延敏感应用，则通信实体A13需要断开其和网络侧的连接，会影响用户对该应用的操作体验。因此，在执行步骤411之前，通信实体A13可以先执行410d。
在一些实施例中，对时延敏感的应用可以为时延敏感类应用白名单中的应用。时延敏感类应用白名单可以包括多个应用的应用标识。应用标识可以为应用的包名(package name)。
在一些实施例中，时延敏感类应用白名单可以作为配置文件，在生产终端100时，预置到终端100中。时延敏感类应用白名单中的应用可以包括交互游戏(例如多人在线战术竞技(multiplayer online battle arena，MOBA))应用、电话应用等。
在一个说明性示例中，当终端100出厂后，开发人员可以更新时延敏感类应用白名单中的应用，例如将新出现的交互应用添加到延敏感类应用白名单中。更新后时延敏感类应用白名单可以通过服务器推送方式发送给终端100。
在一些实施例中，用户可以往时延敏感类应用白名单中添加应用。终端100可以提供管理延敏感类应用白名单的操作入口以及交互界面，以便用户往时延敏感类应用白名单中添加应用。
在该实施例的一个说明性示例中，终端100可以响应于用户起始的针对“设置”功能选项的操作，显示管理时延敏感类应用白名单的操作入口。终端100可以响应于针对该操作入口的操作，显示如图6A所示的界面。其中，应用D1和应用D2为安装在终端100上，且已添加到时延敏感类应用白名单中的应用。应用D3和应用D4等为安装在终端100上，但未添加到时延敏感类应用白名单中的应用。
另外，如图6A所示，对于已添加到时延敏感类应用白名单中的应用，终端100可以提供“删除”选项，以便用户可以从时延敏感类应用白名单中删除相关应用。
如图6A所示，对于未添加到时延敏感类应用白名单中的应用，终端100可以提供“添加”功能选项，以便用户可以往时延敏感类应用白名单中添加相关应用。例如，参阅图6A和图6B，终端100可以响应于针对应用D3对应的“添加”功能选项上的操作，将应用D3添加到时延敏感类应用白名单中。
通信实体A13在执行步骤410d时，可以判断终端100前台运行应用是否为应用白名单中的应用，例如，可以获取前台运行应用的包名，并将该包名在应用白名单中进行匹配或搜索，若匹配到或搜索到与该包名一致的包名，则确定前台运行应用为应用白名单中的应用。当前台运行应用为应用白名单中的应用时，则确定终端100正在运行时延敏感应用。当前台运行应用不为应用白名单中的应用时，则确定终端100没有运行时延敏感应用。
示例性的，当终端100没有运行时延敏感应用时，可以执行步骤411及其后续步骤。
在一些实施例中，在执行步骤411之前，通信实体A13可以先判断终端100当前是否执行时延敏感业务。时延敏感业务可以为语音业务、遥测业务、电话会议业务或交互游戏业务 等。若当终端100正在执行时延敏感业务时，通信实体A13为了发起RRC连接重建立，而断开其和网络侧的连接，会影响用户的业务体验。为了避免或减少对用户业务体验的影响，在终端100没有执行时延敏感业务的前提下，通信实体A13可以主动断开其和网络侧的连接，进而发起RRC连接重建立。
在该实施例的一个说明性示例中，终端100在通过通信实体A13发送数据包时，无线链路控制(radio link control，RLC)层可以识别该数据包所属的业务类型，由此，可以确定该数据包是否属于时延敏感业务(例如语音业务、遥测业务、电话会议业务或交互游戏业务)的数据。若该数据包属于时延敏感业务，则说明终端100正在执行时延敏感业务。
示例性的，当终端100没有执行时延敏感业务时，可以执行步骤411及其后续步骤。
在一些实施例中，当在步骤410a中，确定通信实体A13当前驻留的主小区支持EN-DC时，通信实体A13还可以执行步骤410b。当在步骤410b，确定当定时器C1超时，通信实体A13没有接收到B1事件的测量控制消息或者RRC连接重配请求时，通信实体A13还可以执行步骤410c。当在步骤410c，确定时间段T1内，通信实体A23进行至少一种业务中的业务的总次数不超过n次时，通信实体A13还可以执行步骤410d。当在步骤410d，确定终端100没有运行时延敏感应用时，通信实体A13执行步骤411及后续步骤。
接下来，结合图7，介绍网络侧为通信实体A13添加SCG的流程。
如图7所示，通过步骤701，通信实体A13接入网设备210之间可以建立RRC连接。具体而言，步骤701包括图4C中的步骤412、步骤413、步骤414。
在一些实施例中，接入网设备210在通信实体A13连接到接入网设备210时，可以基于测量为终端100添加辅小区。具体如下。
接入网设备210可以执行步骤702，向通信实体A13发送事件B1的测量控制消息。通信实体A13可以响应于事件B1的测量控制消息，搜索接入网设备220提供的小区。当接入网设备220提供的小区的信号质量高于门限值时，通信实体A13可以执行步骤703，向接入网设备210发送事件B1的测量报告。事件B1的测量报告用于向接入网设备210报告通信实体A13测量得到的异系统邻区的信号质量，即向接入网设备210报告通信实体A13测量得到的接入网设备220提供的小区的信号质量。在一个例子中，小区的信号质量可以通过小区的参考信号接收功率(reference signal receiving power，RSRP)来表征。在一个例子中，小区的信号质量可以通过小区的参考信号接收质量(reference signal received quality，RSRQ)来表征。在一个例子中，小区的信号质量可以通过小区的信号与干扰加噪声比(signal to interference plus noise ratio，SINR)来表征。在一个例子中，小区的信号质量可以通过小区的接收的信号强度指示(received signal strength indication，RSSI)来表征。在一个例子中，小区的信号质量可以通过小区的RSRP、RSRQ、SINR、RSSI中的两项或更多项联合表征。
接入网设备210可以执行步骤704，向接入网设备220发送SgNB添加请求(addition request)。SgNB是指用于辅节点的gNB。在EN-DC架构下，接入网设备210可以为eNB，用作主节点，可以称为MeNB(master eNB)。接入网设备220可以为gNB，用作辅节点，可以称为SgNB(secondary gNB)。
接入网设备220可以执行步骤705，向接入网设备210发送SgNB添加请求确认(addition request acknowledge)消息。
接入网设备210可以执行步骤706，向通信实体A13发送无线资源控制(radio resource control，RRC)连接重配(connection reconfiguration)请求。
通信实体A13可以执行步骤707，向接入网设备210发送RRC连接重配完成(connection  reconfiguration complete)消息。
接入网设备210可以执行步骤708，向接入网设备220发送SgNB重配完成(reconfiguration complete)消息。
终端100和接入网设备220之间可以通过步骤709，进行随机接入程序。随机接入程序可以参考上文介绍，在此不再赘述。
通过步骤709，通信实体A13可以连接到接入网设备220。换言之，通过步骤709，建立了通信实体A13和接入网设备220之间的RRC连接。通过上述步骤，接入网设备210为通信实体A13添加了辅小区(SCG)。在接入网设备210为eNB，接入网设备220为gNB的请情况下，在步骤709之后，通信实体A13进入了EN-DC状态，即终端100通过用户身份A12进入EN-DC状态。
继续参阅图7，接入网设备210可以执行步骤710，向接入网设备220发送SgNB状态转移(status transfer)。核心网230中的服务网关(service gateway，S-GW)、接入网设备210和接入网设备220之间可以在步骤711中，进行数据传送(data forwarding)。
接入网设备210、接入网设备220和核心网230可以进行路径更新程序(path update procedure)。路径更新程序具体可以包括如下步骤。
步骤712，接入网设备220可以向核心网230中的移动性管理实体(mobility management entity，MME)发送演进的无线接入承载(evolved radio access bearer，E-RAB)修改指示(modification indication)；
步骤713，MME向S-GW发送承载修改(bearer modication)请求；
步骤714，服务网关向接入网设备210发送向结束标记包(end marker packet)，接入网设备再向接入网设备220发送结束标记包；
步骤715，MME向接入网设备210发送E-RAB修改确认(modification confirm)消息。
通过上述步骤，通信实体A13根据接入网设备220提供的无线网络接入到核心网230中。
在一些实施例中，接入网设备210在通信实体A13连接到接入网设备210时，可以为通信实体A13盲添加辅小区。仍可以参阅图7，在盲添加辅小区的过程中，在通信实体A13通过步骤701连接到接入网设备210后，接入网设备210不执行步骤702(相应地，通信实体A13也不执行步骤703)，而可以直接执行步骤704以及后续步骤。也就是说，盲添加辅小区相对于基于测量添加辅小区，省却了步骤702和步骤704。
盲添加辅小区的方案中的步骤704以及后续步骤可以参考上文对步骤704-715的介绍，在此不再赘述。
通过图7所示的方案，通信实体A13可以重新接入到5G小区。也就是说，通过图7所示的方案，可以通信实体A13重新添加SCG。
在一些实施例中，参阅图5E，当接入网设备210为通信实体A13成功添加SCG时，终端100的状态栏可以以显示对应于SIM卡A1的4G和5G双网络图标501。如图5E所示，终端100可以通过5G网络传输业务数据，例如高清视频的视频流。从而可以流畅播放高清视频，提高用户的观赏体验。
在一些实施例中，可以理解，接入网设备210为通信实体A13添加SCG有可能会失败。回到图4C，通信实体A13可以执行步骤415，判断添加SCG是否成功。判断添加SCG是否成功的方案可以如下。
回到图7，在一个例子中，通信实体A13在响应于B1事件测量控制消息，测量异系统邻区时，判断异系统邻区的信号质量是否高于门限。若系统邻区的信号质量不高于门限，可以 确定SCG添加失败。在又一个例子中，通信实体A13可以判断当定时器超时时，是否接收到RRC连接重配请求，若没有接收到RRC连接重配请求，可以确定SCG添加失败。在又一个例子中，通信实体A13可以判断步骤709中的随机接入程序是否失败。若步骤709中的随机接入程序失败(例如，定时器超时时，没有接收到随机接入响应)，可以确定SCG添加失败。等等。此处不再一一列举。
在接入网设备210通信实体A13添加SCG失败的情况下，通信实体A13可以执行步骤416，可以将其当前驻留的4G小区列入临时性黑名单。当通信实体A13驻留在临时性黑名单中的小区时，通信实体A13不再触发RRC连接重建立，即不再执行步骤411、步骤412等，以避免添加SCG反复失败导致的RRC连接重建立反复发起。
在一些实施例中，当终端100发生重启时，通信实体A13可以清空临时性黑名单。
在一些实施例中，当通信实体A13的跟踪区(track area update，TAU)更新时，通信实体A13可以清空临时性黑名单。
通过本申请实施例提供的网络接入方法，双卡终端在副卡的业务结束时，可以主动断开主卡和网络侧的RRC连接，并通过主卡主动发起RRC连接重建立，从而可以触发网络侧为终端的主卡尽快添加辅小区，改善用户的网络体验。
参阅图8，本申请实施例提供了一种终端800，终端800可以配置有两张SIM卡。该两张SIM卡中的一张可以作为主卡，另一张可以作为副卡。终端800可以包括处理器810、存储器820和收发器830。存储器820中存储有指令，该指令可被处理器810执行。当该指令在被处理器810执行时，终端800可以执行上述各方法实施例中终端所执行的操作，例如图4C中终端100所执行的操作。具体而言，处理器810可以进行数据处理操作，收发器830可以进行数据发送和/或接收的操作。
参阅图9，本申请实施例提供了一种芯片系统900，可应用于配置有两张SIM卡的终端中。该两张SIM卡中的一张可以作为主卡，另一张可以作为副卡。芯片系统900包括：处理器910和接口电路920。处理器910和接口电路920连接，用于执行上述各方法实施例中终端所执行的操作，例如图4C中终端100所执行的操作。
在一些实施例中，芯片系统900还包括存储器930。存储器中存储有指令，该指令可被处理器910执行。该指令在被处理器90执行时，芯片系统900可以执行上述各方法实施例中终端所执行的操作，例如图4C中终端100所执行的操作。
可以理解的是，本申请的实施例中的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
本申请的实施例中的方法步骤可以通过硬件的方式来实现，也可以由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(random access memory，RAM)、闪存、只读存储器(read-only memory，ROM)、可编程只读存储器(programmable rom，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者通过所述计算机可读存储介质进行传输。所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。

Claims (22)

  1. 一种网络接入方法，其特征在于，应用于配置有第一SIM卡和第二SIM卡的终端，所述终端通过所述第一SIM卡连接主接入网设备和辅接入网设备，所述辅接入网设备为所述终端在所述主接入网设备的协助下连接的；所述方法包括：
    当所述终端通过所述第二SIM卡进行第一业务时，所述终端断开所述终端和所述辅接入网设备之间的RRC连接；
    所述终端确定所述第一业务结束；
    所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求，以便所述终端通过所述第一SIM卡在所述主接入网设备的协助下重新连接到所述辅接入网设备。
  2. 根据权利要求1所述的方法，其特征在于，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求包括：
    当所述终端在所述第一业务结束时通过第一SIM卡驻留的第一小区支持双连接时，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求。
  3. 根据权利要求2所述的方法，其特征在于，所述双连接为统一陆地无线接入网络-新空口双连接EN-DC。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求包括：
    当所述终端通过所述第一SIM卡在第一时间段内没有接收到事件B1的测量控制消息或RRC连接重配置请求时，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求；所述第一时间段为在所述第一业务结束时起始的时间段。
  5. 根据权利要求1所述的方法，其特征在于，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求包括：
    当在第二时间段内所述终端通过所述第二SIM卡进行至少一种业务中的业务的总次数小于或等于n次时，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求，所述第二时间段为在所述第一业务结束时终止的时间段，所述第一业务为所述至少一种业务中的一种业务。
  6. 根据权利要求5所述的方法，其特征在于，所述至少一种业务包括以下至少一种：
    所述第二SIM卡对应的语音业务，所述第二SIM卡对应的彩信业务。
  7. 根据权利要求1所述的方法，其特征在于，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求包括：
    当所述终端没有运行时延敏感应用时，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求；
    或者，
    当所述终端没有执行时延敏感业务时，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求。
  8. 根据权利要求1所述的方法，其特征在于，在所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求之后，所述方法还包括：
    当所述终端通过所述第一SIM卡连接到所述辅接入网设备失败时，所述终端将所述终端通过所述第一SIM卡当前驻留的小区列入第一名单；其中，当所述终端通过所述第一SIM卡驻留在所述第一名单中的小区时，所述终端不再向所述主接入网设备发送RRC连接重建立请求。
  9. 根据权利要求8所述的方法，其特征在于，所述方法还包括：
    当所述终端发生设备重启时，或当所述终端通过所述第一SIM卡接入的无线网络的跟踪区变化时，所述终端清空所述第一名单。
  10. 根据权利要求1所述的方法，其特征在于，所述主接入网设备为4G接入网设备，所述辅接入网设备为5G接入网设备。
  11. 一种终端，其特征在于，所述终端配置有第一SIM卡和第二SIM卡，所述终端通过所述第一SIM卡连接主接入网设备和辅接入网设备，所述辅接入网设备为所述终端在所述主接入网设备的协助下连接的；
    所述终端包括：处理器、存储器和收发器；
    所述存储器用于存储计算机指令；
    当所述终端运行时，所述处理器执行所述计算机指令，使得所述终端执行：
    当所述终端通过所述第二SIM卡进行第一业务时，所述终端断开所述终端和所述辅接入网设备之间的RRC连接；
    所述终端确定所述第一业务结束；
    所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求，以便所述终端通过所述第一SIM卡在所述主接入网设备的协助下重新连接到所述辅接入网设备。
  12. 根据权利要求11所述的终端，其特征在于，所述处理器执行所述计算机指令，使得所述终端还执行：
    当所述终端在所述第一业务结束时通过第一SIM卡驻留的第一小区支持双连接时，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求。
  13. 根据权利要求12所述的终端，其特征在于，所述双连接为统一陆地无线接入网络-新空口双连接EN-DC。
  14. 根据权利要求11-13任一项所述的终端，其特征在于，所述处理器执行所述计算机指 令，使得所述终端还执行：
    当所述终端通过所述第一SIM卡在第一时间段内没有接收到事件B1的测量控制消息或RRC连接重配置请求时，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求；所述第一时间段为在所述第一业务结束时起始的时间段。
  15. 根据权利要求11所述的终端，其特征在于，所述处理器执行所述计算机指令，使得所述终端还执行：
    当在第二时间段内所述终端通过所述第二SIM卡进行至少一种业务中的业务的总次数小于或等于n次时，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求，所述第二时间段为在所述第一业务结束时终止的时间段，所述第一业务为所述至少一种业务中的一种业务。
  16. 根据权利要求15所述的终端，其特征在于，所述至少一种业务包括以下至少一种：
    所述第二SIM卡对应的语音业务，所述第二SIM卡对应的彩信业务。
  17. 根据权利要求11所述的终端，其特征在于，所述处理器执行所述计算机指令，使得所述终端还执行：
    当所述终端没有运行时延敏感应用时，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求；
    或者，
    当所述终端没有执行时延敏感业务时，所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求。
  18. 根据权利要求11所述的终端，其特征在于，在所述终端主动断开所述终端和所述主接入网设备之间的RRC连接，并向所述主接入网设备发送RRC连接重建立请求之后，所述处理器执行所述计算机指令，使得所述终端还执行：
    当所述终端通过所述第一SIM卡连接到所述辅接入网设备失败时，所述终端将所述终端通过所述第一SIM卡当前驻留的小区列入第一名单；其中，当所述终端通过所述第一SIM卡驻留在所述第一名单中的小区时，所述终端不再向所述主接入网设备发送RRC连接重建立请求。
  19. 根据权利要求18所述的终端，其特征在于，所述处理器执行所述计算机指令，使得所述终端还执行：
    当所述终端发生设备重启时，或当所述终端通过所述第一SIM卡接入的无线网络的跟踪区变化时，所述终端清空所述第一名单。
  20. 根据权利要求11所述的终端，其特征在于，所述主接入网设备为4G接入网设备，所述辅接入网设备为5G接入网设备。
  21. 一种芯片系统，其特征在于，包括：处理器和接口电路；
    所述处理器和所述接口电路连接，用于执行指令以使得安装有所述芯片系统的终端执行 权利要求1-10任一项所述的方法。
  22. 一种计算机存储介质，其特征在于，所述计算机存储介质包括计算机指令，当所述计算机指令在终端上运行时，使得所述终端执行权利要求1-10任一项所述的方法。
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