WO2023246248A1 - 一种被叫寻呼方法和装置 - Google Patents

一种被叫寻呼方法和装置 Download PDF

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Publication number
WO2023246248A1
WO2023246248A1 PCT/CN2023/088185 CN2023088185W WO2023246248A1 WO 2023246248 A1 WO2023246248 A1 WO 2023246248A1 CN 2023088185 W CN2023088185 W CN 2023088185W WO 2023246248 A1 WO2023246248 A1 WO 2023246248A1
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WO
WIPO (PCT)
Prior art keywords
called terminal
terminal device
timer
network
called
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2023/088185
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English (en)
French (fr)
Inventor
李海波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honor Device Co Ltd
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Honor Device Co Ltd
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
Application filed by Honor Device Co Ltd filed Critical Honor Device Co Ltd
Priority to US18/570,009 priority Critical patent/US20250097898A1/en
Priority to EP23802130.7A priority patent/EP4329368B1/en
Publication of WO2023246248A1 publication Critical patent/WO2023246248A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H04W36/00222—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between different packet switched [PS] network technologies, e.g. transferring data sessions between LTE and WLAN or LTE and 5G
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
    • H04W36/00226—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB] wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication
    • 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

  • the present application relates to the field of communications, and in particular to a called paging method and device.
  • the fifth generation (5th generation, 5G) mobile communication system standalone (SA) network is being vigorously popularized.
  • the SA network is not perfect.
  • the called party may not be connected (the called party fails).
  • IP multimedia subsystem IP (internet protocol address) multimedia subsystem, IMS) domain and no circuit switch (CS domain)
  • CS domain no circuit switch
  • the embodiments of this application provide a called paging method and device, which can solve the problem of called failure in the SA network.
  • embodiments of the present application provide a called paging method, which includes: the called terminal device receives a paging message, and the called terminal device resides in the independent networking 5G SA network of the fifth generation mobile communication system;
  • the terminal device detects that the data wireless bearer DRB used to transmit Internet Protocol Multimedia Subsystem IMS data has been established, it starts the first timer and detects whether IMS data is received during the start of the first timer; if the first timer The caller times out and the called terminal device does not receive IMS data, and the called terminal device falls back to the Long Term Evolution LTE network to receive the incoming call.
  • the called terminal device detects that the DRB has been established for transmitting IMS data, can start the first timer, and detect whether IMS data is received during the start of the first timer. If the first timer times out and the called terminal device does not receive INVITE or other IMS data, it is considered that the IMS data (for example, INVITE) cannot be received due to network abnormalities, and the called terminal device can actively fall back to LTE to receive the incoming call. . In this way, the called terminal device can receive the INVITE message or paging message on LTE, thus avoiding the problem of called failure.
  • IMS data for example, INVITE
  • the method further includes: after the called terminal device falls back to the LTE network, start a second timer, and receive the incoming call during the start of the second timer; if the called terminal device receives the call during the start of the second timer, When a call comes in, it returns to the 5G SA network after the call ends, lowering the priority of the source cell of the called terminal device.
  • the called terminal device can receive the incoming call on LTE during the start of the second timer. If the called terminal device receives an incoming call during the start of the second timer, it is considered valid to fall back to LTE to answer the call, and the called terminal device can actively return to NR after the call ends. After the called terminal equipment returns to the NR network, it can reduce the source NR The priority of the area is determined to avoid the problem of network anomalies in the access network and core network causing the called failure.
  • receiving an incoming call during the start of the second timer includes: the called terminal device receives a paging message, an invitation INVITE message or a Session Initiation Protocol SIP call establishment of the IMS domain during the start of the second timer. any one of the messages; or the called terminal equipment receives any one of the paging message of the circuit-switched CS domain or the CS service notification message during the start of the second timer.
  • the called terminal equipment falls back to LTE, it can receive incoming calls in the IMS domain or CS domain, avoiding the problem of called failure.
  • the method further includes: after the called terminal equipment receives the CS paging message on LTE, perform a circuit domain fallback (circuit switched fallback, CSFB) process to switch to the CS domain. After the called terminal equipment falls back to LTE, it can switch to the CS domain to receive incoming calls to avoid the problem of called failure.
  • CSFB circuit switched fallback
  • the method also includes: the called terminal device counts the success rate of incoming calls received after falling back to LTE for the first N times in each preset period; if the success rate is higher than or equal to the preset threshold, When the first timer times out next time and the called terminal device does not receive the IMS data of the called terminal device, the called terminal device falls back to the LTE network to receive the incoming call; if the success rate is lower than the preset threshold, the called terminal device will When the first timer times out and the called terminal device does not receive the IMS data of the called terminal device, the called terminal device does not fall back to the LTE network to receive the incoming call. In this way, it is possible to prevent the called terminal equipment from falling back to LTE multiple times in each preset period and failing to answer incoming calls.
  • the called terminal device falls back to the Long Term Evolution LTE network to receive the incoming call.
  • the called terminal device falls back to the LTE network to receive the incoming call when preset conditions are met.
  • the preset conditions include: The called terminal device does not open the preset application, the called terminal device does not open the game mode or performance mode, and/or the called terminal device is in a screen-off state. It should be understood that when the called terminal device meets the preset conditions, that is, when the preset application is not opened, the game mode or performance mode is not turned on, and/or the screen is off, the requirements for network quality and data transmission rate are low. , can reside on a lower standard network (for example, 4G network) to provide services to users.
  • 4G network for example, 4G network
  • the called terminal device receives IMS data of the called terminal device while the first timer is starting, the first timer is closed.
  • the called terminal device can interact with the network side based on the IMS data received from the IMS DRB without falling back to the LTE network.
  • the duration of the second timer may be configured based on preset parameters; where the preset parameters include parameters indicating whether the called terminal device turns on or off the screen, and the called terminal set by the user The network standard of the device, parameters indicating whether the called terminal device is connected to the WIFI network, the working mode of the called terminal device, the amount of traffic currently used by the called terminal device, and at least one of the number of applications running simultaneously on the called terminal device kind.
  • the called terminal device when the called terminal device is in the off-screen state, the called terminal device usually interacts less with the network, has lower requirements for network quality and data transmission rate, and can stay in a lower standard for a longer period of time.
  • network for example, LTE network
  • the called terminal device uses a Wi-Fi network
  • the called terminal device usually interacts less with the mobile communication network and can stay on a lower standard network (for example, LTE network) for a longer period of time without affecting the called party.
  • the terminal equipment operates normally and can improve the call completion rate of the called terminal equipment.
  • the called terminal device When it is detected that the user turns on the 5G network switch, it means that the user prefers the called terminal device to camp on the 5G network, so it can camp on a lower standard network (for example, LTE network) for a shorter period of time without affecting the called terminal device.
  • a lower standard network for example, LTE network
  • the called terminal equipment consumes a large amount of mobile communication network traffic, it can stay in a lower standard network (for example, 4G network) for a shorter period of time and return to a higher standard network as soon as possible. network so as not to affect the normal operation of the called terminal equipment.
  • this application provides a computer program product.
  • the computer program product When the computer program product is run on a computer, it causes the computer to execute the method described in any of the above aspects and any possible design manner thereof.
  • the present application provides a computer-readable storage medium that includes computer instructions.
  • the computer instructions When the computer instructions are run on the called terminal device (such as a mobile phone), the called terminal device is caused to execute the method described in the first aspect and any possible implementation thereof.
  • embodiments of the present application provide a called paging device, which includes a processor.
  • the processor is coupled to a memory.
  • the memory stores program instructions.
  • the device realizes The method described in the above second aspect and any possible design method thereof.
  • the device may be the called terminal equipment; or may be a component of the called terminal equipment, such as a chip.
  • the present application provides a chip system, which includes one or more interface circuits and one or more processors.
  • the interface circuit and the processor are interconnected through lines.
  • the above chip system can be applied to a called terminal device including a communication module and a memory.
  • the interface circuit is configured to receive signals from the memory of the first terminal device and send the received signals to the processor, the signals including computer instructions stored in the memory.
  • the called terminal device can execute the method described in the second aspect and any possible design manner thereof.
  • Figure 1 is a schematic diagram 1 of signal interaction provided by an embodiment of the present application.
  • Figure 2 is a second schematic diagram of signal interaction provided by an embodiment of the present application.
  • Figure 3 is a schematic diagram of a system architecture provided by an embodiment of the present application.
  • Figure 4 is a schematic diagram of the hardware structure of a terminal device provided by an embodiment of the present application.
  • Figure 5 is a schematic diagram 3 of signal interaction provided by an embodiment of the present application.
  • Figure 6 is a schematic diagram of a signal flow provided by an embodiment of the present application.
  • Figure 7 is a schematic diagram 4 of signal interaction provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a chip system provided by an embodiment of the present application.
  • IMS It is a brand-new multimedia service form that can meet the needs of current end customers for more novel and diversified multimedia services.
  • IMS messages can exchange multimedia content such as pictures, videos, and audios.
  • Packet switch During the communication process, the communicating parties use packets as units and use a store-and-forward mechanism to realize data interaction. This is called packet switching.
  • User communication data can be divided into multiple smaller equal-length data segments, and necessary control information is added in front of each data segment as the header of the data segment.
  • Each data segment with a header constitutes a group. .
  • the header specifies the address to which the packet is sent.
  • the switch receives the packet, it can forward the packet to the destination based on the address information in the header.
  • This process is packet switching.
  • the essence of packet switching is storage and forwarding. Its process is to temporarily store the received packets and queue them on the route in the destination direction. When the information can be sent, the information is sent to the corresponding route to complete the forwarding.
  • This store-and-forward process It is the process of packet switching.
  • CS Circuit switching.
  • the CS network can allocate a fixed channel to both parties. At the end of the call, the CS network can release this channel so that it can be allocated to other users for calls next time.
  • circuit switching involves connecting a "dedicated” circuit when a call is established and disconnecting the "dedicated” circuit when the call ends.
  • Session initiation protocol SIP is an application layer protocol that can establish, modify and release multimedia sessions in IP networks.
  • the main applications of SIP include but are not limited to voice, messaging, video, call control, etc.
  • Commonly used SIP request messages may include INVITE (used to establish a dialogue with the user agent for media exchange) and ACK (the client confirms to the server that it has received the final response to the INVITE request).
  • the called party may not be connected (the called party fails).
  • the SCC AS can send the INVITE message to the core network.
  • the core network can send a paging message to the NR access network, and the NR access network can send a paging message to the called terminal device.
  • the called terminal device in the idle state can establish an RRC connection with the NR access network.
  • the called terminal device can establish a service request process with the core network.
  • the NR access network can configure/establish a data radio bearer (DRB) for transmitting IMS data to the called terminal device.
  • DRB data radio bearer
  • the core network cannot transmit the INVITE message (or Other IMS signaling) is successfully sent to the NR access network, so the called terminal device cannot receive the INVITE message.
  • SCC AS can retransmit the INVITE message three times (the retry interval can be, for example, 0.5s, 1s, 2s, 4s, etc.). If still unsuccessful, SCC AS can initiate CS retry (CS retry).
  • CS retry CS retry
  • the SCC AS can send the INVITE message to the core network. If the called terminal device is in the connected state, the core network can restore the IMS bearer with the NR access network, and the NR access network can restore and establish a DRB with the called terminal device for transmitting IMS data.
  • the core network cannot successfully send the INVITE message (or other IMS signaling) to the NR access network, so the called terminal device cannot INVITE message received.
  • SCC AS can retransmit the INVITE message three times, and then SCC AS can initiate CS retry.
  • the called terminal device works under the SA network and is only registered in the IMS domain and not in the CS domain, it cannot receive paging from the CS domain, causing the called party to fail.
  • the embodiment of the present application provides a called paging method.
  • the timer T1 first timer
  • the timer T1 first timer
  • the timer T1 first timer
  • the called terminal equipment Since the called terminal equipment falls back to LTE, it can receive the INVITE message in the IMS domain on LTE, or it can execute the CSFB process to smoothly switch the IMS voice anchored in the IMS domain to the CS network, and then it can receive the INVITE message in the CS domain. Call, so that the called terminal device can receive the incoming call, avoiding the problem of failed call.
  • FIG. 3 shows a schematic diagram of a communication system to which the technical solution provided by the embodiment of the present application is applicable.
  • the communication system may include a terminal device 100, a 5G NW 200, a 4G NW 300 and an IMS 400.
  • the terminal device 100 may be a calling terminal device (or called a calling-side terminal device) or a called-side terminal device. terminal equipment (or called called side terminal equipment).
  • the terminal device 100 may include a smartphone (such as a mobile phone equipped with an Android system or an iOS system, etc.), a tablet computer, a notebook computer, a handheld computer, a mobile internet device (MID), a wearable device (such as a smart watch, a smart phone, etc.) ring, etc.) or other devices that can access the Internet.
  • the terminal-side device may be a terminal sold independently, or may be a chip in the terminal.
  • the user information is stored in the terminal device 100 .
  • the user information may include an international mobile subscriber identification number (IMSI).
  • IMSI may be stored in a subscriber identity module (SIM) card of the terminal device 100.
  • SIM subscriber identity module
  • the terminal device 100 can use the user information as an identity identifier to initiate or receive calls through various voice solutions.
  • the deployment method of 5G NW 200 is standalone (SA).
  • the 5G NW 200 may include a 5G base station 201 and a 5G core network (5G core network, 5GC) 202.
  • the 5G base station 201 is connected to the 5G core network 202, and the 5G core network 202 is connected to the IMS 400.
  • the 5G base station 201 may be a next generation base station (next generation NodeB, gNB).
  • gNB can be connected to the terminal device 100 and communicate with the terminal device 100 using 5G NR access technology, that is, gNB and the terminal device 100 communicate through NR links.
  • the 5G core network 202 is used for switching, forwarding, connecting, and routing data.
  • the network elements in the 5G core network 202 are functional virtual units, which may include but are not limited to: AMF, a unit for session management function (SMF), a network element for unified data management (unified data management) , UDM) etc.
  • the 4G NW 300 may include a 4G base station 301 and a 4G core network (evolved packet core, EPC) 302.
  • the 4G base station 301 is connected to the 4G core network 302, and the 4G core network 302 is connected to the IMS 400.
  • EPC evolved packet core
  • the 4G base station 301 may be an evolved base station (evolved Node B, eNB).
  • eNB evolved Node B
  • the 4G core network 302 mainly includes the following network elements: mobility management entity (MME), serving gateway (SGW), packet data network gateway (PGW), home subscriber server (home subscriber server, HSS) and application server (application server, AS), etc.
  • MME mobility management entity
  • SGW serving gateway
  • PGW packet data network gateway
  • HSS home subscriber server
  • AS application server
  • the main functions of MME include access control, mobility management, attachment and detachment, session management (such as bearer establishment, modification and release), etc.
  • SGW is mainly used for routing and forwarding of data packets.
  • the main functions of PGW include user-based packet filtering function, legal interception function, IP address allocation function, etc.
  • HSS is used to store user subscription information, user subscription data, and mobile user location information.
  • IMS 400 may include a service centralization and continuity application server (SCC AS).
  • SCC AS may perform a Terminating-Access Domain Selection (T-ADS) function to determine the called party.
  • T-ADS Terminating-Access Domain Selection
  • IMS 400 may also include a call session control function (CSCF) and a home subscriber server (HSS).
  • CSCF is used to control signaling and authentication during multimedia call sessions, and cooperate with other network entities to control sessions, etc.
  • HSS is used to manage user data.
  • the units shown in Figure 3 do not constitute a specific limitation on the communication system.
  • the communication system may also include more or less units than shown in the figure, or combine some units, or split some units, or different units.
  • the unit layout is not limited by this application.
  • the terminal device 100 It can be the first electronic device.
  • the terminal device 100 may include a processor 410 , an external memory interface 420 , an internal memory 421 , a universal serial bus (USB) interface 430 , a charging management module 440 , a power management module 441 , and a battery 442 , Antenna 1, Antenna 2, mobile communication module 450, wireless communication module 460, audio module 470, speaker 470A, receiver 470B, microphone 470C, headphone interface 470D, sensor module 480, button 490, motor 491, indicator 492, camera 493 , display screen 494, and subscriber identification module (subscriber identification module, SIM) card interface 495, etc.
  • SIM subscriber identification module
  • the sensor module 480 may include a pressure sensor 480A, a gyro sensor 480B, an air pressure sensor 480C, a magnetic sensor 480D, an acceleration sensor 480E, a distance sensor 480F, a proximity light sensor 480G, a fingerprint sensor 480H, a temperature sensor 480J, a touch sensor 480K, and an environment.
  • the processor 410 may include one or more processing units.
  • the processor 410 may include an application processor (application processor, AP), a modem processor, a graphics processing unit (GPU), and an image signal processor. (image signal processor, ISP), controller, memory, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (NPU) wait.
  • application processor application processor, AP
  • modem processor graphics processing unit
  • GPU graphics processing unit
  • image signal processor image signal processor
  • ISP image signal processor
  • controller memory
  • video codec digital signal processor
  • DSP digital signal processor
  • NPU neural-network processing unit
  • different processing units can be independent devices or integrated in one or more processors.
  • the controller may be the nerve center and command center of the terminal device 100 .
  • the controller can generate operation control signals based on the instruction operation code and timing signals to complete the control of fetching and executing instructions.
  • the processor 410 may also be provided with a memory for storing instructions and data.
  • the memory in processor 410 is cache memory. This memory may hold instructions or data that have been recently used or recycled by processor 410 . If the processor 410 needs to use the instruction or data again, it can be called directly from the memory. Repeated access is avoided and the waiting time of the processor 410 is reduced, thus improving the efficiency of the system.
  • the charge management module 440 is used to receive charging input from the charger.
  • the charger can be a wireless charger or a wired charger.
  • the charging management module 440 may receive charging input from the wired charger through the USB interface 430 .
  • the charging management module 440 may receive wireless charging input through the wireless charging coil of the terminal device 100 . While charging the battery 442, the charging management module 440 can also provide power to the electronic device through the power management module 441.
  • the power management module 441 is used to connect the battery 442, the charging management module 440 and the processor 410.
  • the power management module 441 receives input from the battery 442 and/or the charging management module 440, and supplies power to the processor 410, internal memory 421, external memory, display screen 494, camera 493, wireless communication module 460, etc.
  • the power management module 441 can also be used to monitor battery capacity, battery cycle times, battery health status (leakage, impedance) and other parameters.
  • the power management module 441 may also be provided in the processor 410.
  • the power management module 441 and the charging management module 440 can also be provided in the same device.
  • the wireless communication function of the terminal device 100 can be implemented through the antenna 1, the antenna 2, the mobile communication module 450, the wireless communication module 460, the modem processor and the baseband processor.
  • Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals.
  • Each antenna in terminal device 100 may be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example: Antenna 1 can be reused as a diversity antenna for a wireless LAN. In other embodiments, antennas may be used in conjunction with tuning switches.
  • the mobile communication module 450 can provide wireless communication solutions including 2G/3G/4G/5G applied on the terminal device 100.
  • the mobile communication module 450 may include at least one filter, switch, power amplifier, low noise amplification (low noise amplifier, LNA), etc.
  • the mobile communication module 450 can receive electromagnetic waves from the antenna 1, perform filtering, amplification and other processing on the received electromagnetic waves, and transmit them to the modem processor for demodulation.
  • the mobile communication module 450 can also amplify the signal modulated by the modem processor and convert it into electromagnetic waves through the antenna 1 for radiation.
  • at least part of the functional modules of the mobile communication module 450 may be disposed in the processor 410 .
  • at least part of the functional modules of the mobile communication module 450 and at least part of the modules of the processor 410 may be provided in the same device.
  • the wireless communication module 460 can provide applications on the terminal device 100 including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) network), Bluetooth (bluetooth, BT), and global navigation satellites.
  • WLAN wireless local area networks
  • System global navigation satellite system, GNSS
  • frequency modulation frequency modulation, FM
  • near field communication technology near field communication, NFC
  • infrared technology infrared, IR
  • the wireless communication module 460 may be one or more devices integrating at least one communication processing module.
  • the wireless communication module 460 receives electromagnetic waves via the antenna 2 , frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 410 .
  • the wireless communication module 460 can also receive the signal to be sent from the processor 410, frequency modulate it, amplify it, and convert it into electromagnetic waves through the antenna 2 for radiation.
  • the antenna 1 of the terminal device 100 is coupled to the mobile communication module 450, and the antenna 2 is coupled to the wireless communication module 460, so that the terminal device 100 can communicate with the network and other devices through wireless communication technology.
  • Wireless communication technologies can 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 (long term evolution, LTE), BT, GNSS, WLAN, NFC, FM , and/or IR technology, etc.
  • GNSS can 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 terminal device 100 implements display functions through a GPU, a display screen 494, an application processor, and the like.
  • the GPU is an image processing microprocessor and is connected to the display screen 494 and the application processor. GPUs are used to perform mathematical and geometric calculations for graphics rendering.
  • Processor 410 may include one or more GPUs that execute program instructions to generate or alter display information.
  • Display 494 is used to display images, videos, etc.
  • Display 494 includes a display panel.
  • the display panel can use a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active matrix organic light emitting diode or an active matrix organic light emitting diode (active-matrix organic light emitting diode).
  • LCD liquid crystal display
  • OLED organic light-emitting diode
  • AMOLED organic light-emitting diode
  • FLED flexible light-emitting diode
  • Miniled MicroLed, Micro-oLed, quantum dot light emitting diode (QLED), etc.
  • the terminal device 100 can implement the shooting function through the ISP, camera 493, video codec, GPU, display screen 494, application processor, etc.
  • the terminal device 100 can implement audio functions through the audio module 470, the speaker 470A, the receiver 470B, the microphone 470C, the headphone interface 470D, and the application processor. Such as music playback, recording, etc.
  • the SIM card interface 495 is used to connect a SIM card.
  • the SIM card can be inserted into the SIM card interface 495, or from the SIM The card interface 495 is pulled out to achieve contact and separation from the terminal device 100 .
  • the terminal device 100 can support 1 or N SIM card interfaces, where N is a positive integer greater than 1.
  • SIM card interface 495 can support Nano SIM card, Micro SIM card, SIM card, etc.
  • the same SIM card interface 495 can insert multiple cards at the same time. Multiple cards can be of the same type or different types.
  • the SIM card interface 495 is also compatible with different types of SIM cards.
  • the SIM card interface 495 is also compatible with external memory cards.
  • the terminal device 100 interacts with the network through the SIM card to implement functions such as calls and data communications.
  • the terminal device 100 adopts eSIM, that is, an embedded SIM card.
  • the eSIM card can be embedded in the terminal device 100 and cannot be separated from the terminal device 100 .
  • the structure illustrated in this embodiment does not constitute a specific limitation on the terminal device 100.
  • the terminal device 100 may include more or less components than shown in the figures, or some components may be combined, or some components may be separated, or may be arranged differently.
  • the components illustrated may be implemented in hardware, software, or a combination of software and hardware.
  • the terminal device 100 may also include auxiliary devices such as a mouse, a keyboard, and a drawing pad to perform the process of creating, transmitting, receiving, and customizing target expressions.
  • the embodiment of the present application provides a called paging method, which is explained by taking the called terminal device in the idle state as an example, including:
  • the SCC AS After receiving the INVITE message, the SCC AS sends the INVITE message to the core network.
  • the calling terminal device can initiate a call, and the calling terminal device can send a call request message (for example, an INVITE message) through the calling side network (the network where the calling terminal device is registered).
  • a call request message for example, an INVITE message
  • the INVITE message Messages can reach SCC AS.
  • the SCC AS can perform T-ADS domain selection to confirm that the called terminal device is in the IMS domain.
  • the SCC AS can send the INVITE message to the core network (for example, NR core network) corresponding to the called terminal device through the CSCF.
  • the core network for example, NR core network
  • the core network sends a paging message to the NR access network.
  • the core network determines the NR access network corresponding to the called terminal equipment, and sends the paging message to the NR access network.
  • the NR access network sends a paging message to the called terminal device.
  • the called terminal device can establish an RRC connection with the NR access network.
  • a service request procedure is performed between the called terminal equipment and the NR access network.
  • the service request process means that when the UE has new uplink data to send, or learns that the network has downlink data to send, the UE can send a service request (service request) message to the core network to establish packet evolution system EPS connection management.
  • EPS evolved packet system
  • ECM packet evolution system connection management
  • the network side can reply service accept to the terminal device.
  • the core network After receiving the Service Request message from the UE, the core network can perform radio access bearer (radio access bearer, RAB) is established.
  • RAB radio access bearer
  • the core network can send an Initial Context Setup Request message to the gNB, so that the gNB can establish a DRB with the called terminal device for transmitting IMS data.
  • IMS DRB IMS DRB for short
  • IMS data belongs to user plane data and can be carried in DRB.
  • the called terminal device detects that the DRB for transmitting IMS data has been established, starts timer T1, and detects whether IMS data is received during the start of timer T1.
  • the called terminal equipment detects that the IMS DRB is established on the NR, it means that the called paging (MT paging) needs to transmit IMS data (that is, the network needs to transmit IMS data to the called terminal equipment).
  • the called terminal device can start the timer T1, and detect whether data is received from the IMS DRB during the start of the timer T1.
  • step 509 can be executed.
  • the timer T1 can be turned off if the timer T1 does not time out.
  • the called terminal device can interact with the network side based on the IMS data received from the IMS DRB.
  • the called terminal device can actively fall back to LTE to receive the incoming call.
  • INVITE IMS data
  • other IMS data for example, multimedia data such as audio, text, pictures, videos, etc.
  • the network abnormality may be, for example, an abnormality in the Initial context setup process of the core network element (for example, AMF) and the NR access network, causing the core network to be unable to successfully send INVITE (or other IMS signaling) to the NR access network. , so the called terminal device cannot receive the INVITE.
  • the SCC AS can retransmit the INVITE to the core network three times, but due to abnormal transmission links between the core network and the access network, the core network still cannot successfully send the INVITE (or other IMS signaling) to the NR. Access Network.
  • the called terminal device can actively fall back to LTE to receive the incoming call when preset conditions are met.
  • the preset conditions include: the called terminal device does not open the preset application, does not turn on the game mode or performance mode, and/or is in a screen-off state.
  • the preset application programs may include programs with high data transmission rate requirements. For example, game applications, live broadcast applications, etc.
  • the called terminal device meets the preset conditions, that is, when the preset application is not opened, the game mode or performance mode is not turned on, and/or the screen is off, the requirements for network quality and data transmission rate are low.
  • a lower standard network for example, 4G network
  • 4G network 4G network
  • falling back from the 5G SA network to the 4G network (LTE network) will not affect the normal operation of the called terminal equipment, and can improve the call completion rate of the called terminal equipment.
  • the called terminal device does not meet the preset conditions, for example, the called terminal device opens a preset application, turns on game mode or performance mode, or is in a bright screen state, it has higher requirements for data transmission rate and network quality.
  • a high-standard network for example, 5G SA network
  • the called terminal device actively falls back to LTE, starts timer T2 (second timer), and receives the incoming call during the start of timer T2.
  • the called terminal device does not receive INVITE or other IMS data from the IMS DRB during the start of timer T1, it is considered that the INVITE or other IMS data cannot be received due to network abnormalities.
  • the called terminal device can actively fall back to LTE to receive the incoming call.
  • Timer T2 can be started. During the start of timer T2, the called terminal device can receive incoming calls on LTE.
  • a call If a call is received during the start of timer T2, it will return to the NR network (5G SA network) after the call ends. After returning to the NR network, the priority of the source NR cell (the source cell is an NR cell) will be reduced.
  • the called terminal device may try to receive the incoming call on LTE during the start of timer T2. It should be noted that during the startup of timer T2, SCC AS may initiate CS retry.
  • the called terminal device can receive CS paging (paging) on LTE and perform the circuit switched fallback (CSFB) process, so that the called terminal device can receive incoming calls in the CS domain during the start of timer T2, avoiding The problem of being called failed.
  • the called terminal device can receive an INVITE message or paging message in the IMS domain on LTE, that is, the called terminal device can receive an incoming call in the IMS domain during the start of timer T2, thus avoiding the problem of called failure.
  • the duration of timer T2 may be configured based on preset parameters.
  • the preset parameters may include parameters indicating whether the called terminal equipment turns on or off the screen, the network standard of the called terminal equipment set by the user, parameters indicating whether the called terminal equipment is connected to the WIFI network, the working of the called terminal equipment mode, the current traffic volume used by the called terminal device, and at least one of the number of applications running simultaneously on the called terminal device.
  • the working mode of the called terminal device may include game mode, performance mode, smooth mode, etc.
  • the called terminal device after the called terminal device turns on the game mode, it can set up background calls for incoming calls, intelligently allocate more resources to the game, automatically reject incoming calls, prohibit WLAN automatic connection, and control whether to display floating notifications in the game (for example, the user can prohibit Display floating notification when the game is running), etc.
  • the CPU and GPU hardware After the called terminal device turns on the performance mode, the CPU and GPU hardware can run without restrictions and achieve the best performance.
  • the called terminal device turns on the smooth mode, the CPU frequency is limited, the power is saved, and the battery life is increased.
  • the duration of timer T2 can be set to the first duration; if the called terminal device is using the Wi-Fi network, the timer can be set to the first duration.
  • the duration of T2 is set to the first duration; if it is detected that the user turns on the 5G network switch, the duration of timer T2 can be set to the second duration; if the called terminal device is currently running multiple applications at the same time, the duration of timer T2 can be set to The duration is set to the second duration; if the called terminal device is currently in game mode or performance mode, the duration of timer T2 can be set to the second duration.
  • the first duration is longer than the second duration.
  • timer T2 when timer T2 is started, if it is determined that the called terminal device is in a screen-off state, or if the called terminal device is using a Wi-Fi network, the duration of timer T2 can be set longer.
  • timer T2 is turned on, if it is detected that the user has turned on the 5G network switch, or if the called terminal device is currently running multiple applications at the same time, or if the called terminal device is currently in game mode or performance mode, the duration of timer T2 can be changed.
  • the setting is short.
  • the called terminal device when the called terminal device is in the off-screen state, the called terminal device usually interacts less with the network, has lower requirements for network quality and data transmission rate, and can stay in a lower standard for a longer period of time.
  • network for example, LTE network
  • the called terminal device uses a Wi-Fi network
  • the called terminal device usually interacts less with the mobile communication network and can stay on a lower standard network (for example, LTE network) for a longer period of time without affecting the called party.
  • the terminal equipment operates normally and can improve the call completion rate of the called terminal equipment.
  • the user When it is detected that the user turns on the 5G network switch, it means that the user prefers the called terminal device to camp on the 5G network, so it can camp on a lower standard network (for example, LTE network) for a shorter period of time without affecting the called terminal device.
  • a lower standard network for example, LTE network
  • normal operation when the traffic of the mobile communication network consumed by the called terminal equipment is large, it can stay in a lower standard network (for example, 4G network) for a short time and return to a higher standard network as soon as possible, so as to It does not affect the normal operation of the called terminal equipment.
  • the called terminal device receives an incoming call during the start of timer T2, it is considered valid to fall back to LTE to answer the call, and the called terminal device can actively return to the NR network after the call ends.
  • the called terminal device can turn off the timer T2 after receiving an incoming call, and actively return to the NR network after the call ends.
  • the called terminal device can actively return to the NR network after the call ends and the timer T2 expires.
  • the priority of the source NR cell can be reduced to avoid the problem of network anomalies in the access network and core network causing the called failure to occur again.
  • the called terminal device receiving an incoming call during the start of timer T2 may include any of the following situations: the called terminal device receives a paging message (paging), INVITE message, or INVITE message of the IMS domain during the start of timer T2. SIP call setup (sip call setup) and other messages, or the called terminal device receives CS domain paging messages (paging), CS service notification (CS_Service_Notification) and other messages during the start of timer T2, this application does not limit it.
  • the called terminal device can count the success rate of receiving incoming calls after falling back to LTE within a period of time.
  • the success rate is higher than the preset threshold, the same situation will occur subsequently (that is, the called terminal device detects that the DRB has been established for transmitting IMS data, Start timer T1 and fall back to LTE when IMS data is not received during the start of timer T1 to avoid the problem of called failure.
  • the success rate is lower than the preset threshold, the same situation will follow (that is, the called terminal equipment detects that the DRB has been established for transmitting IMS data, starts timer T1, and does not receive IMS data during the start of timer T1) When this occurs, it will no longer automatically fall back to LTE (i.e. exit fallback mode).
  • the first N times (for example, 3 times, 5 times or 10 times, etc.) of the called terminal device in each preset period can be counted.
  • This application (without limitation) the success rate of receiving incoming calls after falling back to LTE to prevent the incoming calls from being invalid after falling back to LTE multiple times in each preset period.
  • the success rate of receiving calls after the called terminal equipment falls back to LTE in a preset period can be counted to prevent the terminal equipment from falling back to LTE in the next preset period (for example, the second preset period). ) once again fell back to the situation where LTE was unable to answer incoming calls.
  • the called terminal equipment detects that the DRB for transmitting IMS data has been established, and can start timer T1, and detect whether IMS data is received during the start of timer T1. If timer T1 times out and the called terminal device does not receive INVITE or other IMS data (for example, multimedia data such as audio, text, pictures, videos, etc.), it is considered that the IMS data (for example, INVITE) cannot be received due to network abnormalities. , the called terminal device can actively fall back to LTE to receive the incoming call.
  • INVITE multimedia data such as audio, text, pictures, videos, etc.
  • timer T1 can be turned off if the timer T1 does not time out.
  • the called terminal device can interact with the network side based on the IMS data received from the IMS DRB.
  • timer T2 can be started.
  • the called terminal device can receive incoming calls on LTE. If the called terminal device receives an incoming call during the start of timer T2, it is considered valid to fall back to LTE to answer the call.
  • the called terminal device can actively return to NR. After the called terminal equipment returns to the NR network, the priority of the source NR cell can be reduced to avoid the problem of network anomalies in the access network and core network causing the called failure to occur again.
  • the called terminal equipment detects that the DRB has been established for transmitting IMS data, can start the timer T1, and detect whether IMS data is received during the start of the timer T1. If timer T1 expires , and the called terminal device does not receive INVITE or other IMS data, it is considered that the IMS data (for example, INVITE) cannot be received due to network abnormalities, and the called terminal device can actively fall back to LTE to receive the incoming call. In this way, the called terminal device can receive the INVITE message or paging message on LTE, thus avoiding the problem of called failure.
  • IMS data for example, INVITE
  • timer T2 can be started. During the start of timer T2, the called terminal device can receive incoming calls on LTE. If the called terminal device receives an incoming call during the start of timer T2, it is considered valid to fall back to LTE to answer the call. After the call ends, the called terminal device can actively return to NR. After the called terminal equipment returns to the NR network, the priority of the source NR cell can be reduced to avoid the problem of network anomalies in the access network and core network causing the called failure to occur again.
  • the embodiment of the present application provides a called paging method, which is explained by taking the mobile phone in the connected state as an example, including:
  • the SCC AS After receiving the INVITE message, the SCC AS sends the INVITE message to the core network.
  • step 501 Please refer to the relevant description of step 501, which will not be described again here.
  • the core network and NR access network restore IMS bearers.
  • the NR access network restores the IMS DRB to the called terminal device.
  • the NR access network can restore and establish a DRB with the called terminal device for transmitting IMS data.
  • the called terminal equipment detects that the DRB used to transmit IMS data has been restored, starts the timer T1, and detects whether IMS data is received during the start of the timer T1.
  • the called terminal equipment detects that IMS DRB is restored on the NR, it means that the network needs to transmit IMS data to the called terminal equipment.
  • the called terminal device can start the timer T1, and detect whether data is received from the IMS DRB during the start of the timer T1.
  • step 706 can be executed.
  • the timer T1 can be turned off if the timer T1 does not time out.
  • the called terminal device can interact with the network side based on the IMS data received from the IMS DRB.
  • the called terminal device can actively fall back to LTE to receive the incoming call.
  • INVITE IMS data
  • other IMS data for example, multimedia data such as audio, text, pictures, videos, etc.
  • the called terminal device actively falls back to LTE, starts timer T2, and receives the incoming call during the start of timer T2.
  • steps 706-709 please refer to the relevant description of steps 509-512, which will not be described again here.
  • the called terminal device when the called terminal device detects that the DRB used to transmit IMS data has been restored, it can start the timer T1 and detect whether IMS data is received during the startup of the timer T1. If timer T1 times out and the called terminal device does not receive INVITE or other IMS data, it is considered that the IMS data (for example, INVITE) cannot be received due to network abnormalities, and the called terminal device can actively fall back to LTE to receive the incoming call. In this way, the called terminal device can receive the INVITE message or paging message of the IMS domain on LTE, thus avoiding the problem of called failure.
  • IMS data for example, INVITE
  • timer T2 can be started. During the start of timer T2, the called terminal device can receive incoming calls on LTE. If the called terminal device receives an incoming call during the start of timer T2, it is considered valid to fall back to LTE to answer the call. After the call ends, the called terminal device can actively return to NR. After the called terminal equipment returns to the NR network, the priority of the source NR cell can be reduced to avoid the problem of network anomalies in the access network and core network causing the called failure to occur again.
  • the chip system includes at least one processor 801 and at least one interface circuit 802 .
  • the processor 801 and the interface circuit 802 may be interconnected by wires.
  • interface circuitry 802 may be used to receive signals from other devices (eg, memory of an electronic device).
  • interface circuit 802 may be used to send signals to other devices (eg, processor 801).
  • the interface circuit 802 may read instructions stored in a memory in the electronic device and send the instructions to the processor 801 .
  • the terminal device (the terminal device 100 shown in FIG. 4) can be caused to perform various steps in the above embodiments.
  • chip system may also include other discrete devices, which are not specifically limited in the embodiments of this application.
  • Embodiments of the present application also provide a computer-readable storage medium.
  • the computer-readable storage medium includes computer instructions.
  • the terminal device causes the terminal device to 100 executes each function or step performed by the calling terminal device or the called terminal device in the above method embodiment.
  • An embodiment of the present application also provides a computer program product.
  • the computer program product When the computer program product is run on a computer, it causes the computer to perform various functions or steps performed by the electronic device in the above method embodiment.
  • the embodiment of the present application also provides a voice calling device.
  • the device can be divided into different logical units or modules according to functions. Each unit or module performs different functions, so that the device performs the electronic equipment in the above method embodiment. Each function or step performed.
  • the disclosed system, device and method can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of modules or units is only a logical function division.
  • there may be other division methods for example, multiple units or components may be The combination can either be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of this embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the above integrated units can be implemented in the form of hardware or software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.
  • the technical solution of this embodiment is essentially or contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to cause a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment.
  • the aforementioned storage media include: flash memory, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk and other media that can store program codes.

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Abstract

本申请实施例提供一种被叫寻呼方法和装置，涉及通信领域，能够解决SA网络下被叫失败的问题。其方法为：驻留于5G SA网络的被叫终端设备接收寻呼消息，在被叫终端设备检测到用于传输互联网协议多媒体子系统IMS数据的数据无线承载DRB已建立的情况下，可以启动第一定时器，在第一定时器启动期间检测是否接收到IMS数据。如果第一定时器超时，且被叫终端设备没有接收到INVITE或其它IMS数据，则认为由于网络异常导致无法接收到IMS数据(例如，INVITE)，被叫终端设备可以主动回落到LTE上接收来电。这样，被叫终端设备可以在LTE上接收IMS域的INVITE消息或寻呼消息，避免了被叫失败的问题。

Description

一种被叫寻呼方法和装置
本申请要求于2022年06月23日提交国家知识产权局、申请号为202210717676.7、发明名称为“一种被叫寻呼方法和装置”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
本申请涉及通信领域，尤其涉及一种被叫寻呼方法和装置。
背景技术
目前，第五代(5th generation，5G)移动通信系统独立组网(standalone，SA)网络正在大力普及。然而，SA网络并不完善，用户打开终端设备的SA功能使用SA网络时可能会出现被叫无法接通(被叫失败)的问题。
一方面，由于SA网络下，只有IP多媒体子系统(IP(internet protocol address)multimedia subsystem，IMS)域，没有电路交换(circuit switch，CS域)，当IMS链路发生异常的时候，网络侧虽然可以发起CS域重试(即回落到CS域寻呼终端设备)，但是由于终端设备未注册CS域，所以无法回落到CS域上接收来电，导致被叫失败。
另一方面，当网络故障导致演进分组系统回落语音承载(evolved packet system fallback，EPS Fallback)流程异常时，终端设备无法正常回落长期演进(long term evolution，LTE)网络，从而无法被正常接通，导致被叫失败。
发明内容
本申请实施例提供一种被叫寻呼方法和装置，能够解决SA网络下被叫失败的问题。
第一方面，本申请实施例提供一种被叫寻呼方法，包括：被叫终端设备接收寻呼消息，被叫终端设备驻留于第五代移动通信系统独立组网5G SA网络；被叫终端设备检测到用于传输互联网协议多媒体子系统IMS数据的数据无线承载DRB已建立的情况下，启动第一定时器，并在第一定时器启动期间检测是否接收到IMS数据；若第一定时器超时，且被叫终端设备没有接收到IMS数据，被叫终端设备回落到长期演进LTE网络上接收来电。
基于本申请实施例提供的方法，被叫终端设备检测到已建立用于传输IMS数据的DRB，可以启动第一定时器，在第一定时器启动期间检测是否接收到IMS数据。如果第一定时器超时，且被叫终端设备没有接收到INVITE或其它IMS数据，则认为由于网络异常导致无法接收到IMS数据(例如，INVITE)，被叫终端设备可以主动回落到LTE上接收来电。这样，被叫终端设备可以在LTE上接收INVITE消息或寻呼消息，避免了被叫失败的问题。
在一种可能的实现方式中，该方法还包括：被叫终端设备回落到LTE网络后，启动第二定时器，在第二定时器启动期间接收来电；若在第二定时器启动期间接收到来电，通话结束后回归5G SA网络，降低被叫终端设备的源小区的优先级。
这样，被叫终端设备可以在第二定时器启动期间，被叫终端设备可以在LTE上接收来电。如果被叫终端设备在第二定时器启动期间接收到来电，认为回落LTE接听来电有效，通话结束后被叫终端设备可以主动回归NR。被叫终端设备回NR网络后可以降低源NR小 区的优先级，避免接入网和核心网再次发生网络异常导致被叫失败的问题。
在一种可能的实现方式中，在第二定时器启动期间接收来电包括：被叫终端设备在第二定时器启动期间接收到IMS域的寻呼消息、邀请INVITE消息或会话初始协议SIP呼叫建立消息中的任一项；或者被叫终端设备在第二定时器启动期间接收到电路交换CS域的寻呼消息或CS服务通知消息中的任一项。也就是说，被叫终端设备回落LTE后，可以在IMS域或CS域接收来电，避免被叫失败的问题。
在一种可能的实现方式中，该方法还包括：被叫终端设备在LTE上接收到CS寻呼消息后，执行电路域回落电路域回落(circuit switched fallback，CSFB)流程以切换至CS域。被叫终端设备回落LTE后，可以切换到CS域接收来电，避免被叫失败的问题。
在一种可能的实现方式中，该方法还包括：被叫终端设备统计每个预设周期内前N次回落到LTE后接收到来电的成功率；若成功率高于或等于预设阈值，在下一次第一定时器超时，且被叫终端设备没有接收到被叫终端设备的IMS数据的情况下，被叫终端设备回落到LTE网络上接收来电；若成功率低于预设阈值，在下一次第一定时器超时，且被叫终端设备没有接收到被叫终端设备的IMS数据的情况下，被叫终端设备不回落到LTE网络上接收来电。这样，可以防止被叫终端设备在每个预设周期内多次回落LTE接听来电无效的情况。
在一种可能的实现方式中，被叫终端设备回落到长期演进LTE网络上接收来电包括：被叫终端设备在满足预设条件的情况下回落到LTE上接收来电；其中，预设条件包括：被叫终端设备未打开预设应用程序，被叫终端设备未开启游戏模式或性能模式，和/或，被叫终端设备处于灭屏状态。应该理解的是，被叫终端设备满足预设条件时，即未打开预设应用程序，未开启游戏模式或性能模式，和/或处于灭屏状态时，对网络质量和数据传输速率要求较低，可以驻留到较低制式的网络(例如，4G网络)为用户提供服务。
在一种可能的实现方式中，若第一定时器启动期间，被叫终端设备接收到被叫终端设备的IMS数据，关闭第一定时器。被叫终端设备可以基于从IMS DRB接收到IMS数据与网络侧交互，无需回落LTE网络。
在一种可能的实现方式中，第二定时器的时长可以是基于预设参数配置的；其中，预设参数包括指示被叫终端设备是否亮屏或灭屏的参数，用户设置的被叫终端设备的网络制式，指示被叫终端设备是否连接WIFI网络的参数，被叫终端设备的工作模式，被叫终端设备当前使用的流量大小，被叫终端设备同时运行的应用程序的数量中的至少一种。
需要说明的是，当被叫终端设备为灭屏状态时，被叫终端设备通常与网络的交互较少，对网络质量和数据传输速率要求较低，可以较长时间地驻留到较低制式的网络(例如，LTE网络)，不影响被叫终端设备的正常运行，且可以提高被叫终端设备的呼通率。当被叫终端设备使用Wi-Fi网络时，被叫终端设备通常与移动通信网络的交互较少，可以较长时间地驻留到较低制式的网络(例如，LTE网络)，不影响被叫终端设备的正常运行，且可以提高被叫终端设备的呼通率。当检测到用户开启5G网络开关，说明用户更希望被叫终端设备驻留在5G网络，因此可以较短时间地驻留到较低制式的网络(例如，LTE网络)，不影响被叫终端设备的正常运行；当被叫终端设备消耗地移动通信网络的流量较大时，可以较短时间地驻留到较低制式的网络(例如，4G网络)，尽快回到较高制式的网 络，以便不影响被叫终端设备的正常运行。
第二方面，本申请提供一种计算机程序产品，当所述计算机程序产品在计算机上运行时，使得所述计算机执行上述任一方面及其任一种可能的设计方式所述的方法。
第三方面，本申请提供一种计算机可读存储介质，该计算机可读存储介质包括计算机指令。当计算机指令在被叫终端设备(如手机)上运行时，使得该被叫终端设备执行如第一方面及其任一种可能的实现方式所述的方法。
第四方面，本申请实施例提供了一种被叫寻呼装置，包括处理器，处理器和存储器耦合，存储器存储有程序指令，当存储器存储的程序指令被处理器执行时使得所述装置实现上述第二方面及其任一种可能的设计方式所述的方法。所述装置可以为被叫终端设备；或可以为被叫终端设备中的一个组成部分，如芯片。
第五方面，本申请提供一种芯片系统，该芯片系统包括一个或多个接口电路和一个或多个处理器。该接口电路和处理器通过线路互联。
上述芯片系统可以应用于包括通信模块和存储器的被叫终端设备。该接口电路用于从第一终端设备的存储器接收信号，并向处理器发送接收到的信号，该信号包括存储器中存储的计算机指令。当处理器执行该计算机指令时，被叫终端设备可以执行如第二方面及其任一种可能的设计方式所述的方法。
可以理解地，上述提供的第二方面所述的计算机程序产品，第三方面所述的计算机可读存储介质，第四方面所述的被叫寻呼装置及第五方面所述的芯片系统所能达到的有益效果，可参考如第一方面及其任一种可能的设计方式中的有益效果，此处不再赘述。
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图1为本申请实施例提供的一种信号交互示意图一；
图2为本申请实施例提供的一种信号交互示意图二；
图3为本申请实施例提供的一种系统架构示意图；
图4为本申请实施例提供的一种终端设备的硬件结构示意图；
图5为本申请实施例提供的一种信号交互示意图三；
图6为本申请实施例提供的一种信号流程示意图；
图7为本申请实施例提供的一种信号交互示意图四；
图8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
为了下述各实施例的描述清楚简洁，首先给出相关概念或技术的简要介绍：
IMS：是一种全新的多媒体业务形式，能够满足现在的终端客户更新颖、更多样化地多媒体业务的需求。例如，IMS消息能够交换图片、视频、音频等类型的多媒体内容。
分组交换(packet switch，PS)：在通信过程中，通信双方以分组为单位、使用存储-转发机制实现数据交互的通信方式，被称为分组交换。可以将用户通信的数据划分成多个较小的等长数据段，在每个数据段的前面加上必要的控制信息作为数据段的首部，每个带有首部的数据段就构成了一个分组。首部指明了该分组发送的地址，当交换机接收到分组之后，可以根据首部中的地址信息将分组转发到目的地，这个过程就是分组交换。分组交换的本质就是存储转发，它的过程是将所接受的分组暂时存储下来，在目的方向路由上排队，当可以发送信息时，再将信息发送到相应的路由上，完成转发。这种存储转发的过程 就是分组交换的过程。
CS:即电路交换，当通过CS网络通话时，CS网络可以为通话双方分配一条固定的通道。在通话结束时，CS网络可以释放这一条通道，以便下一次分配给其他的用户进行通话。简单来说，电路交换就是在通话建立时连接“专用”电路，在通话结束时断开该“专用”电路。
会话初始协议(session initiation protocol，SIP)：SIP是一种可以在IP网络中建立、修改和释放多媒体会话的应用层协议。SIP主要的应用包括但不局限于语音、消息、视频、呼叫控制等方面。常用的SIP请求消息可以包括INVITE(用于与用户代理之间的媒体交换建立对话)和ACK(客户端向服务器端证实其已经收到了对INVITE请求的最终响应)。
目前，终端设备驻留在SA网络下时，可能会出现被叫无法接通(被叫失败)的问题。
例如，如图1所示，SCC AS接收到INVITE消息后，可以向核心网发送该INVITE消息。核心网可以向NR接入网发送寻呼消息，NR接入网可以向被叫终端设备发送寻呼消息。处于空闲态的被叫终端设备接收到寻呼消息后，可以和NR接入网建立RRC连接。被叫终端设备可以和核心网之间建立服务请求(service request)流程。NR接入网可以向被叫终端设备配置/建立用于传输IMS数据的数据无线承载(data radio bearer，DRB)。但是，由于网络故障(例如用于接入和移动管理功能的单元(access and mobility management function，AMF)和NR接入网之间的Initial context setup流程异常)，导致核心网无法将INVITE消息(或其它的IMS信令)成功发送给NR接入网，从而被叫终端设备无法接收到INVITE消息。SCC AS可以重传3次INVITE消息(重试间隔例如可以是0.5s、1s、2s、4s等)。若仍不成功，SCC AS可以发起CS重试(CS retry)。但是，由于被叫终端设备工作在SA网络下，只注册了IMS域，没有注册CS域，因此无法接收到CS域的寻呼，从而导致被叫失败。
又例如，如图2所示，SCC AS接收到INVITE消息后，可以向核心网发送该INVITE消息。若被叫终端设备处于连接态，核心网可以恢复与NR接入网的IMS承载，NR接入网可以恢复\建立与被叫终端设备之间用于传输IMS数据的DRB。但是由于网络故障(例如核心网网元AMF和基站的Initial context setup流程异常)，导致核心网无法将INVITE消息(或其它的IMS信令)成功发送给NR接入网，从而被叫终端设备无法接收到INVITE消息。SCC AS可以重传3次INVITE消息，之后SCC AS可以发起CS retry。但是，由于被叫终端设备工作在SA网络下，只注册了IMS域，没有注册CS域，因此无法接收到CS域的寻呼，从而导致被叫失败。
本申请实施例提供一种被叫寻呼方法，在被叫终端设备检测到用于传输IMS数据的DRB已建立/已恢复的情况下，可以启动定时器T1(第一定时器)，并在定时器T1启动期间检测是否接收到被叫终端设备的IMS数据；如果定时器T1超时，且被叫终端设备还没有接收到INVITE或其它IMS数据，被叫终端设备主动回落到LTE上接收来电。由于被叫终端设备回落到LTE上，可以在LTE上接收IMS域的INVITE消息，或者可以执行CSFB流程，将锚定在IMS域的IMS语音平滑切换至CS网络，就可以接收到CS域的寻呼，从而被叫终端设备可以接收到来电，避免了被叫失败的问题。
图3给出了本申请实施例提供的技术方案所适用的一种通信系统示意图，该通信系统可以包括终端设备100、5G NW 200、4G NW 300和IMS 400。
其中，终端设备100可以是主叫终端设备(或称为主叫侧终端设备)或者是被叫侧终 端设备(或称为被叫侧终端设备)。终端设备100可包括智能手机(例如搭载Android系统或iOS系统的手机等)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备(例如智能手表、智能手环等)或其他可以接入互联网的设备。本申请实施例中，终端侧设备可以是独立销售的终端，也可以是终端中的芯片。本申请实施例提供的技术方案中，以用于实现终端的功能的装置是终端侧设备为例，描述本申请实施例提供的技术方案。
终端设备100中存储有用户信息。该用户信息可包括国际移动用户识别码(international mobile subscriber identification number，IMSI)。IMSI可以被存储在终端设备100的客户识别模块(subscriber identity module，SIM)卡中。终端设备100可以使用该用户信息作为身份标识，通过各种语音解决方案发起呼叫或接收呼叫。
5G NW 200的部署方式为独立组网(standalone，SA)。其中，5G NW 200可以包括5G基站201和5G核心网(5G core network，5GC)202。5G基站201连接至5G核心网202，5G核心网202连接至IMS 400。
5G基站201可以是下一代基站(next generation NodeB，gNB)。gNB可以连接到终端设备100，并与该终端设备100之间采用5G NR接入技术相互通信，即gNB和终端设备100之间通过NR链路通信。
5G核心网202用于交换、转发、接续、路由数据。5G核心网202中的网元为功能性的虚拟单元，可包括但不限于：AMF、用于会话管理功能的单元(session management function，SMF)、用于统一数据管理的网元(unified data management，UDM)等。
4G NW 300可以包括4G基站301和4G核心网(evolved packet core，EPC)302。4G基站301连接至4G核心网302，4G核心网302连接至IMS 400。
4G基站301可以是演进型基站(evolved Node B，eNB)。
4G核心网302中主要包括以下网元：移动性管理实体(mobility management entity，MME)、服务网关(serving gateway，SGW)、分组数据网络网关(packet data networkgateway，PGW)、归属签约用户服务器(home subscriber server，HSS)和应用服务器(application server，AS)等。MME的主要功能包括接入控制、移动性管理、附着与去附着、会话管理(例如承载的建立、修改和释放)等。SGW的主要用于数据包的路由和转发。PGW的主要功能包括基于用户的包过滤功能、合法侦听功能IP地址分配功能等。HSS用于存储用户签约信息、用户的签约数据及移动用户的位置信息等。
IMS 400可包括服务集中化和连续性应用服务器(service centralization and continuity application server，SCC AS)，SCC AS可以执行被叫域选择功能(Terminating-Access Domain Selection，T-ADS)功能，以确定被叫用户的接入域信息。IMS 400还可以包括呼叫会话控制功能实体(call session control function，CSCF)和归属用户服务器(home subscriber server，HSS)。CSCF用于控制多媒体呼叫会话过程中的信令、鉴权、与其它网络实体配合控制会话等。HSS用于管理用户数据。
可以理解，图3所示的单元并不构成对通信系统的具体限定，通信系统还可以包括比图示更多或更少的单元，或者组合某些单元，或者拆分某些单元，或者不同的单元布置，本申请不做限定。
如图4所示，为本申请实施例提供的一种终端设备100的结构示意图，该终端设备100 可以是第一电子设备。如图4所示，终端设备100可以包括处理器410，外部存储器接口420，内部存储器421，通用串行总线(universal serial bus，USB)接口430，充电管理模块440，电源管理模块441，电池442，天线1，天线2，移动通信模块450，无线通信模块460，音频模块470，扬声器470A，受话器470B，麦克风470C，耳机接口470D，传感器模块480，按键490，马达491，指示器492，摄像头493，显示屏494，以及用户标识模块(subscriber identification module，SIM)卡接口495等。其中，传感器模块480可以包括压力传感器480A，陀螺仪传感器480B，气压传感器480C，磁传感器480D，加速度传感器480E，距离传感器480F，接近光传感器480G，指纹传感器480H，温度传感器480J，触摸传感器480K，环境光传感器480L，骨传导传感器480M等。
处理器410可以包括一个或多个处理单元，例如：处理器410可以包括应用处理器(application processor，AP)，调制解调处理器，图形处理器(graphics processing unit，GPU)，图像信号处理器(image signal processor，ISP)，控制器，存储器，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。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。
控制器可以是终端设备100的神经中枢和指挥中心。控制器可以根据指令操作码和时序信号，产生操作控制信号，完成取指令和执行指令的控制。
处理器410中还可以设置存储器，用于存储指令和数据。在一些实施例中，处理器410中的存储器为高速缓冲存储器。该存储器可以保存处理器410刚用过或循环使用的指令或数据。如果处理器410需要再次使用该指令或数据，可从存储器中直接调用。避免了重复存取，减小了处理器410的等待时间，因而提高了系统的效率。
充电管理模块440用于从充电器接收充电输入。其中，充电器可以是无线充电器，也可以是有线充电器。在一些有线充电的实施例中，充电管理模块440可以通过USB接口430接收有线充电器的充电输入。在一些无线充电的实施例中，充电管理模块440可以通过终端设备100的无线充电线圈接收无线充电输入。充电管理模块440为电池442充电的同时，还可以通过电源管理模块441为电子设备供电。
电源管理模块441用于连接电池442，充电管理模块440与处理器410。电源管理模块441接收电池442和/或充电管理模块440的输入，为处理器410，内部存储器421，外部存储器，显示屏494，摄像头493，和无线通信模块460等供电。电源管理模块441还可以用于监测电池容量，电池循环次数，电池健康状态(漏电，阻抗)等参数。在其他一些实施例中，电源管理模块441也可以设置于处理器410中。在另一些实施例中，电源管理模块441和充电管理模块440也可以设置于同一个器件中。
终端设备100的无线通信功能可以通过天线1，天线2，移动通信模块450，无线通信模块460，调制解调处理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。终端设备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450可以提供应用在终端设备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450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450可以由天线1接收电磁波，并对接收的电磁波进行滤波，放大等处理，传送至调制解调处理器进行解调。移动通信模块450还可以对经调制解调处理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450的至少部分功能模块可以被设置于处理器410中。在一些实施例中，移动通信模块450的至少部分功能模块可以与处理器410的至少部分模块被设置在同一个器件中。
无线通信模块460可以提供应用在终端设备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460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460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410。无线通信模块460还可以从处理器410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，终端设备100的天线1和移动通信模块450耦合，天线2和无线通信模块460耦合，使得终端设备100可以通过无线通信技术与网络以及其他设备通信。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)，BT，GNSS，WLAN，NFC，FM，和/或IR技术等。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)。
终端设备100通过GPU，显示屏494，以及应用处理器等实现显示功能。GPU为图像处理的微处理器，连接显示屏494和应用处理器。GPU用于执行数学和几何计算，用于图形渲染。处理器410可包括一个或多个GPU，其执行程序指令以生成或改变显示信息。
显示屏494用于显示图像，视频等。
显示屏494包括显示面板。显示面板可以采用液晶显示屏(liquid crystal display，LCD)，有机发光二极管(organic light-emitting diode，OLED)，有源矩阵有机发光二极体或主动矩阵有机发光二极体(active-matrix organic light emitting diode，AMOLED)，柔性发光二极管(flex light-emitting diode，FLED)，Miniled，MicroLed，Micro-oLed，量子点发光二极管(quantum dot light emitting diodes，QLED)等。
终端设备100可以通过ISP，摄像头493，视频编解码器，GPU，显示屏494以及应用处理器等实现拍摄功能。
终端设备100可以通过音频模块470，扬声器470A，受话器470B，麦克风470C，耳机接口470D，以及应用处理器等实现音频功能。例如音乐播放，录音等。
SIM卡接口495用于连接SIM卡。SIM卡可以通过插入SIM卡接口495，或从SIM 卡接口495拔出，实现和终端设备100的接触和分离。终端设备100可以支持1个或N个SIM卡接口，N为大于1的正整数。SIM卡接口495可以支持Nano SIM卡，Micro SIM卡，SIM卡等。同一个SIM卡接口495可以同时插入多张卡。多张卡的类型可以相同，也可以不同。SIM卡接口495也可以兼容不同类型的SIM卡。SIM卡接口495也可以兼容外部存储卡。终端设备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，终端设备100采用eSIM，即：嵌入式SIM卡。eSIM卡可以嵌在终端设备100中，不能和终端设备100分离。
以下实施例中的方法均可以在具有上述硬件结构的终端设备100中实现。
可以理解的是，本实施例示意的结构并不构成对终端设备100的具体限定。在另一些实施例中，终端设备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。例如，终端设备100还可以包括鼠标，键盘、画板等辅助设备，用于进行目标表情的制作、传递、接收以及自定义的过程。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。其中，在本申请的描述中，除非另有说明，“至少一个”是指一个或多个，“多个”是指两个或多于两个。另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
为了便于理解，以下结合附图对本申请实施例提供的被叫寻呼方法进行具体介绍。
如图5所示，本申请实施例提供一种被叫寻呼方法，以被叫终端设备处于空闲态为例进行说明，包括：
501、SCC AS接收INVITE消息后，向核心网发送INVITE消息。
可以理解的是，响应于用户操作，主叫终端设备可以发起呼叫，主叫终端设备可以通过主叫侧网络(主叫终端设备注册的网络)发送呼叫请求消息(例如，INVITE消息)，该INVITE消息可以到达SCC AS。SCC AS接收到INVITE消息后，可以进行T-ADS域选，确定被叫终端设备处于IMS域。而后，SCC AS可以通过CSCF向被叫终端设备对应的核心网(例如，NR核心网)发送该INVITE消息。
502、核心网向NR接入网发送寻呼消息。
核心网确定被叫终端设备对应的NR接入网，向该NR接入网发送寻呼消息。
503、NR接入网向被叫终端设备发送寻呼消息。
504、被叫终端设备接收到寻呼消息后，可以和NR接入网建立RRC连接。
505、被叫终端设备和NR接入网之间进行服务请求流程(service request procedure)。
其中，服务请求流程是指当UE有新的上行数据要发送，或者得知网络有下行数据要发送时，UE可以向核心网发送服务请求(service request)报文以建立分组演进系统EPS连接管理(EPS(evolved packet system)connection management，ECM)连接。网络侧可以向终端设备回复service accept。
506、NR接入网和被叫终端设备之间配置/建立用于传输IMS数据的DRB。
核心网从UE接收到Service Request消息后，可以执行无线承载(radio access bearer， RAB)建立。核心网可以向gNB发送初始上下文设置请求(Initial Context Setup Request)消息，这样gNB可以建立与被叫终端设备之间用于传输IMS数据的DRB。
被叫终端设备IMS注册成功后，可以监测用于传输IMS数据的DRB(简称IMS DRB)是否建立。可以理解的是，IMS数据属于用户面数据，可以承载在DRB中。
507、被叫终端设备检测到已建立用于传输IMS数据的DRB，启动定时器T1，并在定时器T1启动期间检测是否接收到IMS数据。
如果被叫终端设备在NR上监测到IMS DRB建立，则意味着被叫寻呼(MT paging)需要传输IMS数据(即网络需要传输IMS数据到被叫终端设备)。此时，被叫终端设备可以启动定时器T1，在定时器T1启动期间检测是否从IMS DRB接收到数据。
508、确定定时器T1是否超时。
若定时器T1超时，可以执行步骤509。
若定时器T1未超时，即被叫终端设备在定时器TI运行期间从IMS DRB接收到数据且接收到的数据大于预设阈值，可以在定时器T1未超时的情况下关闭定时器T1。被叫终端设备可以基于从IMS DRB接收到IMS数据与网络侧交互。
509、如果定时器T1超时，且被叫终端设备没有接收到INVITE或其它IMS数据(例如，音频、文本、图片、视频等多媒体数据)，则认为由于网络异常导致无法接收到IMS数据(例如，INVITE)，被叫终端设备可以主动回落到LTE上接收来电。
其中，网络异常例如可以是核心网网元(例如，AMF)和NR接入网的Initial context setup流程发生异常，导致核心网无法将INVITE(或其它的IMS信令)成功发送给NR接入网，从而被叫终端设备无法接收到INVITE。在这种情况下，SCC AS可以向核心网重传3次INVITE，但由于核心网与接入网的传输链路异常，核心网仍无法将INVITE(或其它的IMS信令)成功发送给NR接入网。
在一种可能的设计中，被叫终端设备可以在满足预设条件的情况下主动回落到LTE上接收来电。其中，预设条件包括：被叫终端设备未打开预设应用程序，未开启游戏模式或性能模式，和/或处于灭屏状态时。其中，预设应用程序可以包括数据传输速率要求高的程序。例如，游戏应用，直播应用等。
应该理解的是，被叫终端设备满足预设条件时，即未打开预设应用程序，未开启游戏模式或性能模式，和/或处于灭屏状态时，对网络质量和数据传输速率要求较低，可以驻留到较低制式的网络(例如，4G网络)为用户提供服务。此时，从5G SA网络回落到4G网络(LTE网络)，不影响被叫终端设备的正常运行，且可以提高被叫终端设备的呼通率。当被叫终端设备不满足预设条件时，例如，被叫终端设备打开了预设应用程序，开启了游戏模式或性能模式，或处于亮屏状态时，对数据传输速率和网络质量要求较高，需要驻留到高制式网络(例如，5G SA网络)为用户提供更流畅的服务。此时，可以不回落到LTE网络，避免影响被叫终端设备的正常运行。
510、被叫终端设备主动回落到LTE上，并启动定时器T2(第二定时器)，在定时器T2启动期间接收来电。
如果被叫终端设备在定时器T1启动期间未从IMS DRB接收到INVITE或其它IMS数据，则认为由于网络异常导致无法接收到INVITE或其它IMS数据。这种情况下，定时器T1超时后，被叫终端设备可以主动回落到LTE上接收来电。被叫终端设备回落到LTE时， 可以启动定时器T2。在定时器T2启动期间，被叫终端设备可以在LTE上接收来电。
511、如果定时器T2启动期间接收到来电，通话结束后回归NR网络(5G SA网络)，回NR网络后降低源NR小区(源小区是NR小区)的优先级。
被叫终端设备可以在定时器T2启动期间尝试在LTE上接收来电。需要说明的是，在定时器T2启动期间，SCC AS可能会发起CS retry。被叫终端设备可以在LTE上接收CS寻呼(paging)，并执行电路域回落(circuit switched fallback,CSFB)流程，这样被叫终端设备在定时器T2启动期间可以在CS域接收到来电，避免了被叫失败的问题。或者，被叫终端设备可以在LTE上接收IMS域的INVITE消息或寻呼消息，即被叫终端设备可以在定时器T2启动期间在IMS域接收来电，避免了被叫失败的问题。
其中，定时器T2的时长可以是基于预设参数配置的。其中，预设参数可以包括指示被叫终端设备是否亮屏或灭屏的参数，用户设置的被叫终端设备的网络制式，指示被叫终端设备是否连接WIFI网络的参数，被叫终端设备的工作模式，被叫终端设备当前使用的流量大小，被叫终端设备同时运行的应用程序的数量中的至少一种。其中，被叫终端设备的工作模式可以包括游戏模式、性能模式、流畅模式等。其中，被叫终端设备开启游戏模式后，可以设置来电后台通话、智能分配更多资源给游戏、自动拒接来电、禁止WLAN自动连接、控制在游戏内是否显示悬浮通知(例如，用户可以禁止在游戏运行时显示悬浮通知)等。被叫终端设备开启性能模式后，CPU和GPU类硬件可以不受限制的运行,达到最佳的性能状态。被叫终端设备开启流畅模式后，CPU主频限速、节电、续航时间增加。
示例性的，定时器T2开启时，若确定被叫终端设备为灭屏状态，可以将定时器T2的时长设置为第一时长；若被叫终端设备正在使用Wi-Fi网络，可以将定时器T2的时长设置为第一时长；若检测到用户开启5G网络开关，可以将定时器T2的时长设置为第二时长；若被叫终端设备当前同时运行多个应用程序，可以将定时器T2的时长设置为第二时长；若被叫终端设备当前处于游戏模式或性能模式，可以将定时器T2的时长设置为第二时长。其中，第一时长大于第二时长。也就是说，定时器T2开启时，若确定被叫终端设备为灭屏状态，或者若被叫终端设备正在使用Wi-Fi网络，可以将定时器T2的时长设置地较长。定时器T2开启时，若检测到用户开启5G网络开关，或者若被叫终端设备当前同时运行多个应用程序，或者若被叫终端设备当前处于游戏模式或性能模式，可以将定时器T2的时长设置地较短。
需要说明的是，当被叫终端设备为灭屏状态时，被叫终端设备通常与网络的交互较少，对网络质量和数据传输速率要求较低，可以较长时间地驻留到较低制式的网络(例如，LTE网络)，不影响被叫终端设备的正常运行，且可以提高被叫终端设备的呼通率。当被叫终端设备使用Wi-Fi网络时，被叫终端设备通常与移动通信网络的交互较少，可以较长时间地驻留到较低制式的网络(例如，LTE网络)，不影响被叫终端设备的正常运行，且可以提高被叫终端设备的呼通率。当检测到用户开启5G网络开关，说明用户更希望被叫终端设备驻留在5G网络，因此可以较短时间地驻留到较低制式的网络(例如，LTE网络)，不影响被叫终端设备的正常运行；当被叫终端设备消耗地移动通信网络的流量较大时，可以较短时间地驻留到较低制式的网络(例如，4G网络)，尽快回到较高制式的网络，以便不影响被叫终端设备的正常运行。
如果被叫终端设备在定时器T2启动期间接收到来电，认为回落LTE接听来电有效，通话结束后被叫终端设备可以主动回归NR网络。可选的，被叫终端设备可以在接收到来电后关闭定时器T2，在通话结束后主动回归NR网络。或者，被叫终端设备可以在通话结束后且定时器T2超时后主动回归NR网络。被叫终端设备回NR网络后可以降低源NR小区的优先级，避免接入网和核心网再次发生网络异常导致被叫失败的问题。
其中，被叫终端设备在定时器T2启动期间接收到来电可以包括以下情况中的任一种：被叫终端设备在定时器T2启动期间接收到IMS域的寻呼消息(paging)、INVITE消息、SIP呼叫建立(sip call setup)等消息，或者被叫终端设备在定时器T2启动期间接收到CS域的寻呼消息(paging)、CS服务通知(CS_Service_Notification)等消息，本申请不做限定。
512、统计被叫终端设备回落到LTE后接收到来电的成功率，若成功率高于预设阈值，则后续相同情况发生时回落LTE，若成功率低于预设阈值，则后续相同情况发生时不再回落LTE。
被叫终端设备可以统计一段时间内回落LTE后接收到来电的成功率，当成功率高于预设阈值，则后续相同情况发生(即被叫终端设备检测到已建立用于传输IMS数据的DRB，启动定时器T1，并在定时器T1启动期间未接收到IMS数据)时回落LTE，避免被叫失败的问题。当成功率低于预设阈值的时候，则后续相同情况(即被叫终端设备检测到已建立用于传输IMS数据的DRB，启动定时器T1，并在定时器T1启动期间未接收到IMS数据)发生时不再自主回落LTE(即退出回落模式)。
在一种可能的设计中，可以统计被叫终端设备在每个预设周期内(例如，一个星期、一个月等等)前N次(例如，3次、5次或10次等，本申请不做限定)回落到LTE后接收到来电的成功率，防止在每个预设周期内多次回落LTE接听来电无效的情况。
或者，可以统计被叫终端设备在预设周期(例如，第一个预设周期)回落到LTE后接收到来电的成功率，防止终端设备在下一个预设周期(例如，第二个预设周期)再次回落LTE接听来电无效的情况。
如图6所示，被叫终端设备检测到已建立用于传输IMS数据的DRB，可以启动定时器T1，在定时器T1启动期间检测是否接收到IMS数据。如果定时器T1超时，且被叫终端设备没有接收到INVITE或其它IMS数据(例如，音频、文本、图片、视频等多媒体数据)，则认为由于网络异常导致无法接收到IMS数据(例如，INVITE)，被叫终端设备可以主动回落到LTE上接收来电。若定时器T1未超时，即被叫终端设备在定时器TI运行期间从IMS DRB接收到数据且接收到的数据大于预设阈值，可以在定时器T1未超时的情况下关闭定时器T1。被叫终端设备可以基于从IMS DRB接收到IMS数据与网络侧交互。被叫终端设备回落到LTE时，可以启动定时器T2。在定时器T2启动期间，被叫终端设备可以在LTE上接收来电。如果被叫终端设备在定时器T2启动期间接收到来电，认为回落LTE接听来电有效，通话结束后被叫终端设备可以主动回归NR。被叫终端设备回NR网络后可以降低源NR小区的优先级，避免接入网和核心网再次发生网络异常导致被叫失败的问题。
基于本申请实施例提供的方法，被叫终端设备检测到已建立用于传输IMS数据的DRB，可以启动定时器T1，在定时器T1启动期间检测是否接收到IMS数据。如果定时器T1超 时，且被叫终端设备没有接收到INVITE或其它IMS数据，则认为由于网络异常导致无法接收到IMS数据(例如，INVITE)，被叫终端设备可以主动回落到LTE上接收来电。这样，被叫终端设备可以在LTE上接收INVITE消息或寻呼消息，避免了被叫失败的问题。
进一步的，被叫终端设备回落到LTE时，可以启动定时器T2。在定时器T2启动期间，被叫终端设备可以在LTE上接收来电。如果被叫终端设备在定时器T2启动期间接收到来电，认为回落LTE接听来电有效，通话结束后被叫终端设备可以主动回归NR。被叫终端设备回NR网络后可以降低源NR小区的优先级，避免接入网和核心网再次发生网络异常导致被叫失败的问题。
如图7所示，本申请实施例提供一种被叫寻呼方法，以手机处于连接态为例进行说明，包括：
701、SCC AS接收INVITE消息后，向核心网发送INVITE消息。
可以参考步骤501的相关说明，在此不做赘述。
702、核心网与NR接入网恢复IMS承载。
核心网从SCC AS接收到INVITE消息后，若确定被叫终端设备处于连接态，核心网可以恢复与NR接入网的IMS承载(例如回复5G服务质量标识符(5G QoS(quality of service)identifier，5QI)＝5的承载)。
703、NR接入网向被叫终端设备恢复IMS DRB。
核心网恢复与NR接入网的IMS承载后，NR接入网可以恢复\建立与被叫终端设备之间用于传输IMS数据的DRB。
704、被叫终端设备检测到已恢复用于传输IMS数据的DRB，启动定时器T1，并在定时器T1启动期间检测是否接收到IMS数据。
如果被叫终端设备在NR上监测到IMS DRB恢复，则意味着网络需要传输IMS数据到被叫终端设备。此时，被叫终端设备可以启动定时器T1，在定时器T1启动期间检测是否从IMS DRB接收到数据。
705、确定定时器T1是否超时。
若定时器T1超时，可以执行步骤706。
若定时器T1未超时，即被叫终端设备在定时器TI运行期间从IMS DRB接收到数据且接收到的数据大于预设阈值，可以在定时器T1未超时的情况下关闭定时器T1。被叫终端设备可以基于从IMS DRB接收到IMS数据与网络侧交互。
706、如果定时器T1超时，且被叫终端设备没有接收到INVITE或其它IMS数据(例如，音频、文本、图片、视频等多媒体数据)，则认为由于网络异常导致无法接收到IMS数据(例如，INVITE)，被叫终端设备可以主动回落到LTE上接收来电。
707、被叫终端设备主动回落到LTE上，并启动定时器T2，在定时器T2启动期间接收来电。
708、如果定时器T2启动期间接收到来电，当定时器T2超时后可以回到NR，回NR时降低源NR小区的优先级。
709、统计被叫终端设备回落到LTE后接收到来电的成功率，若成功率高于预设阈值，则后续相同情况发生时回落LTE，若成功率低于预设阈值，则后续相同情况发生时不再回落LTE。
步骤706-709可以参考步骤509-512的相关描述，在此不做赘述。
基于本申请实施例提供的方法，被叫终端设备检测到已恢复用于传输IMS数据的DRB时，可以启动定时器T1，在定时器T1启动期间检测是否接收到IMS数据。如果定时器T1超时，且被叫终端设备没有接收到INVITE或其它IMS数据，则认为由于网络异常导致无法接收到IMS数据(例如，INVITE)，被叫终端设备可以主动回落到LTE上接收来电。这样，被叫终端设备可以在LTE上接收IMS域的INVITE消息或寻呼消息，避免了被叫失败的问题。
进一步的，被叫终端设备回落到LTE时，可以启动定时器T2。在定时器T2启动期间，被叫终端设备可以在LTE上接收来电。如果被叫终端设备在定时器T2启动期间接收到来电，认为回落LTE接听来电有效，通话结束后被叫终端设备可以主动回归NR。被叫终端设备回NR网络后可以降低源NR小区的优先级，避免接入网和核心网再次发生网络异常导致被叫失败的问题。
本申请实施例还提供一种芯片系统，如图8所示，该芯片系统包括至少一个处理器801和至少一个接口电路802。处理器801和接口电路802可通过线路互联。例如，接口电路802可用于从其它装置(例如，电子设备的存储器)接收信号。又例如，接口电路802可用于向其它装置(例如处理器801)发送信号。
例如，接口电路802可读取电子设备中存储器中存储的指令，并将该指令发送给处理器801。当所述指令被处理器801执行时，可使得终端设备(如图4所示的终端设备100)执行上述实施例中的各个步骤。
当然，该芯片系统还可以包含其他分立器件，本申请实施例对此不作具体限定。
本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质包括计算机指令，当所述计算机指令在电子设备(如图4所示的终端设备100)上运行时，使得终端设备100执行上述方法实施例中主叫终端设备或被叫终端设备执行的各个功能或者步骤。
本申请实施例还提供一种计算机程序产品，当所述计算机程序产品在计算机上运行时，使得所述计算机执行上述方法实施例中电子设备执行的各个功能或者步骤。
本申请实施例还提供了一种语音呼叫装置，所述装置可以按照功能划分为不同的逻辑单元或模块，各单元或模块执行不同的功能，以使得所述装置执行上述方法实施例中电子设备执行的各个功能或者步骤。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本实施例所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本实施例各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器执行各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：快闪存储器、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (17)

  1. 一种被叫寻呼方法，其特征在于，包括：
    被叫终端设备接收寻呼消息，所述被叫终端设备驻留于第五代移动通信系统独立组网5G SA网络；
    所述被叫终端设备检测到用于传输互联网协议多媒体子系统IMS数据的数据无线承载DRB已建立的情况下，启动第一定时器，并在所述第一定时器启动期间检测是否接收到网际协议多媒体子系统IMS数据；
    若所述第一定时器超时，且所述被叫终端设备没有接收到所述IMS数据，所述被叫终端设备回落到长期演进LTE网络上接收来电。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述被叫终端设备回落到LTE网络后，启动第二定时器，在所述第二定时器启动期间接收来电；
    若在所述第二定时器启动期间接收到来电，通话结束后回归所述5G SA网络，降低所述被叫终端设备的源小区的优先级。
  3. 根据权利要求1或2所述的方法，其特征在于，所述在所述第二定时器启动期间接收来电包括：
    所述被叫终端设备在所述第二定时器启动期间接收到IMS域的寻呼消息、邀请INVITE消息或会话初始协议SIP呼叫建立消息中的任一项；或者
    所述被叫终端设备在所述第二定时器启动期间接收到电路交换CS域的寻呼消息或CS服务通知消息中的任一项。
  4. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    所述被叫终端设备在LTE上接收到CS寻呼消息后，执行电路域回落CSFB流程以切换至CS域。
  5. 根据权利要求1或2或4任一项所述的方法，其特征在于，所述方法还包括：
    所述被叫终端设备统计每个预设周期内前N次回落到LTE后接收到来电的成功率；
    若所述成功率高于或等于预设阈值，在下一次所述第一定时器超时，且所述被叫终端设备没有接收到所述被叫终端设备的IMS数据的情况下，所述被叫终端设备回落到LTE网络上接收来电；
    若所述成功率低于预设阈值，在下一次所述第一定时器超时，且所述被叫终端设备没有接收到所述被叫终端设备的IMS数据的情况下，所述被叫终端设备不回落到LTE网络上接收来电。
  6. 根据权利要求1或2或4任一项所述的方法，其特征在于，所述被叫终端设备回落到长期演进LTE网络上接收来电包括：
    所述被叫终端设备在满足预设条件的情况下回落到LTE上接收来电；
    其中，所述预设条件包括：被叫终端设备未打开预设应用程序，被叫终端设备未开启游戏模式或性能模式，和/或，被叫终端设备处于灭屏状态。
  7. 根据权利要求1或2或4任一项所述的方法，其特征在于，
    若所述第一定时器启动期间，所述被叫终端设备接收到所述被叫终端设备的IMS数据，关闭所述第一定时器。
  8. 根据权利要求3所述的方法，其特征在于，
    所述第二定时器的时长可以是基于预设参数配置的；
    其中，所述预设参数包括指示所述被叫终端设备是否亮屏或灭屏的参数，用户设置的所述被叫终端设备的网络制式，指示所述被叫终端设备是否连接WIFI网络的参数，所述被叫终端设备的工作模式，所述被叫终端设备当前使用的流量大小，所述被叫终端设备同时运行的应用程序的数量中的至少一种。
  9. 一种计算机可读存储介质，其特征在于，包括计算机指令；
    当所述计算机指令在被叫终端设备上运行时，使得所述被叫终端设备执行如权利要求1-8中任一项所述的方法。
  10. 一种芯片系统，其特征在于，所述芯片系统包括一个或多个接口电路和一个或多个处理器；所述接口电路和所述处理器通过线路互联；
    所述芯片系统应用于包括通信模块和存储器的被叫终端设备；所述接口电路用于从所述存储器接收信号，并向所述处理器发送所述信号，所述信号包括所述存储器中存储的计算机指令；当所述处理器执行所述计算机指令时，所述被叫终端设备执行如权利要求1-8中任一项所述的方法。
  11. 一种被叫寻呼方法，其特征在于，包括：
    被叫终端设备接收寻呼消息，所述被叫终端设备驻留于第五代移动通信系统独立组网5G SA网络；
    所述被叫终端设备检测到用于传输互联网协议多媒体子系统IMS数据的数据无线承载DRB已建立的情况下，启动第一定时器，并在所述第一定时器启动期间检测是否接收到网际协议多媒体子系统IMS数据；
    若所述第一定时器超时，且所述被叫终端设备没有接收到所述IMS数据，所述被叫终端设备回落到长期演进LTE网络上接收来电；
    所述被叫终端设备回落到LTE网络后，启动第二定时器，在所述第二定时器启动期间接收来电；
    若在所述第二定时器启动期间接收到来电，通话结束后回归所述5G SA网络，降低所述被叫终端设备的源小区的优先级。
  12. 根据权利要求11所述的方法，其特征在于，所述在所述第二定时器启动期间接收来电包括：
    所述被叫终端设备在所述第二定时器启动期间接收到IMS域的寻呼消息、邀请INVITE消息或会话初始协议SIP呼叫建立消息中的任一项；或者
    所述被叫终端设备在所述第二定时器启动期间接收到电路交换CS域的寻呼消息或CS服务通知消息中的任一项。
  13. 根据权利要求12所述的方法，其特征在于，所述方法还包括：
    所述被叫终端设备在LTE上接收到CS寻呼消息后，执行电路域回落CSFB流程以切换至CS域。
  14. 根据权利要求11-13任一项所述的方法，其特征在于，所述方法还包括：
    所述被叫终端设备统计每个预设周期内前N次回落到LTE后接收到来电的成功率；
    若所述成功率高于或等于预设阈值，在下一次所述第一定时器超时，且所述被叫 终端设备没有接收到所述被叫终端设备的IMS数据的情况下，所述被叫终端设备回落到LTE网络上接收来电；
    若所述成功率低于预设阈值，在下一次所述第一定时器超时，且所述被叫终端设备没有接收到所述被叫终端设备的IMS数据的情况下，所述被叫终端设备不回落到LTE网络上接收来电。
  15. 根据权利要求11-13任一项所述的方法，其特征在于，所述被叫终端设备回落到长期演进LTE网络上接收来电包括：
    所述被叫终端设备在满足预设条件的情况下回落到LTE上接收来电；
    其中，所述预设条件包括：被叫终端设备未打开预设应用程序，被叫终端设备未开启游戏模式或性能模式，和/或，被叫终端设备处于灭屏状态。
  16. 根据权利要求11-13任一项所述的方法，其特征在于，
    若所述第一定时器启动期间，所述被叫终端设备接收到所述被叫终端设备的IMS数据，关闭所述第一定时器。
  17. 根据权利要求12所述的方法，其特征在于，
    所述第二定时器的时长可以是基于预设参数配置的；
    其中，所述预设参数包括指示所述被叫终端设备是否亮屏或灭屏的参数，用户设置的所述被叫终端设备的网络制式，指示所述被叫终端设备是否连接WIFI网络的参数，所述被叫终端设备的工作模式，所述被叫终端设备当前使用的流量大小，所述被叫终端设备同时运行的应用程序的数量中的至少一种。
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