WO2024108760A1 - 用于避免业务失败的方法及装置 - Google Patents

用于避免业务失败的方法及装置 Download PDF

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Publication number
WO2024108760A1
WO2024108760A1 PCT/CN2023/073298 CN2023073298W WO2024108760A1 WO 2024108760 A1 WO2024108760 A1 WO 2024108760A1 CN 2023073298 W CN2023073298 W CN 2023073298W WO 2024108760 A1 WO2024108760 A1 WO 2024108760A1
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Prior art keywords
network
terminal
cell
registration
message
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PCT/CN2023/073298
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English (en)
French (fr)
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丁明
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荣耀终端有限公司
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Publication of WO2024108760A1 publication Critical patent/WO2024108760A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • 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
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/22—Performing reselection for specific purposes for handling the traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks

Definitions

  • the present application relates to the field of communication technology, and in particular to a method and device for avoiding service failure.
  • terminals can perform wireless communication based on various network standards, including but not limited to 5G network and 4G network.
  • the terminal can perform wireless communication based on networks of various standards, there is still the problem of call or data service failure.
  • the present application provides a method and device for avoiding service failure, aiming to solve the problem of how to avoid service failure.
  • the first aspect of the present application provides a method for avoiding service failure, including: a terminal initiates registration with a first network and successfully registers with the first network, the terminal receives a first message sent by the first network, the first message is used to instruct the terminal to redirect or switch from the first network to the second network, the first message carries information about the cell of the second network, and when the terminal receives the first message, if it fails to successfully register with the cell of the second network, the terminal initiates mobility registration with the first network.
  • the terminal in the case where the terminal fails to successfully register with the cell of the second network, the terminal initiates mobility registration with the first network again, so that the first network perceives that the terminal is registered in the first network again, and when the terminal has service, the first network can respond to the service and initiate paging to the terminal, thereby increasing the possibility of successfully executing the service after the terminal fails to redirect or switch.
  • the method further includes: after completing mobility registration between the terminal and the first network, the terminal receives paging, the paging is sent by the first network when the terminal is called or receives downlink data of the terminal, and the terminal performs a call or data service based on the first network. It can be seen that after the mobility registration is completed, when the terminal is called or has downlink data, the first network can send paging to the terminal, so that the terminal can perform services based on the first network, so that the possibility of successfully performing services after the terminal redirection fails or the handover fails can be improved.
  • initiating the mobility registration to the first network includes: initiating a tracking area update TAU process to the first network. Therefore, the method of completing the mobility registration includes: completing the TAU process.
  • the function of the TAU process at least includes completing the registration in the network, so the TAU process enables the first network to sense again that the terminal is registered in the first network, which is conducive to improving the success rate of the terminal performing services based on the first network.
  • the failure to successfully register with the cell of the second network includes: the cell of the second network does not meet the conditions for the terminal to initiate the redirection process. If the conditions for the terminal to initiate the redirection process (referred to as redirection) are not met, the terminal will not initiate a redirection to the second network, and the terminal will not initiate a registration process to the second network. Therefore, the terminal cannot successfully register with the cell of the second network. It can be seen that the cell of the second network does not meet the conditions for the terminal to initiate the redirection process.
  • An implementation manner in which the terminal fails to successfully register with the cell of the second network is conducive to more comprehensive identification of registration failures and does not miss registration failures in certain scenarios.
  • the failure to successfully register with the cell of the second network includes: when the cell of the second network meets the condition for the terminal to initiate the redirection process, the terminal initiates the redirection process to the cell of the second network, and the redirection process fails. It can be seen that based on the logical relationship between the condition for the terminal to initiate redirection, the redirection process, and registration, the condition for initiating the redirection process and the failure of the redirection process are used as an implementation method for failing to successfully register with the cell of the second network, which helps to more comprehensively identify registration failures and reduce the possibility of missing registration failures in certain scenarios.
  • failure to successfully register with a cell of the second network includes: when the cell of the second network meets the conditions for the terminal to initiate a redirection process, the terminal initiates a redirection process to the cell of the second network, and after the redirection process, the terminal initiates a registration process to the cell of the second network, and the registration process fails. Determinations are made based on the conditions for initiating redirection, the redirection process, and the registration process, respectively, to facilitate a more comprehensive assessment of whether a registration failure has occurred and reduce the possibility of missing registration failures in certain scenarios.
  • the first message includes: a radio resource control release RRC Release message.
  • RRC Release message When releasing the RRC, the terminal can be instructed to perform a redirection process to save signaling resources.
  • the conditions for the terminal to initiate the redirection process include: S criteria, which are compatible with the communication protocol and are conducive to accurately and quickly determining whether the terminal initiates the redirection process to the network.
  • failure to successfully register with the cell of the second network includes: the terminal initiates a random access process to the cell of the second network based on information about the cell of the second network, and the random access process fails.
  • the terminal initiates a random access process to the cell of the second network based on information about the cell of the second network, and the random access process fails.
  • judging the registration process failure based on the failure of the random access process is conducive to a more comprehensive assessment of whether a registration failure has occurred, and reducing the possibility of missing registration failures in certain scenarios.
  • the failure to successfully register with the cell of the second network includes: the terminal initiates a random access process to the cell of the second network based on the information of the cell of the second network, and the terminal initiates a registration process to the cell of the second network after the random access process, and the registration process fails.
  • the success of the random access process and the failure of the registration process performed on the second network are used as the specific ways of failing to successfully register with the second network, which is conducive to a more comprehensive assessment of whether a registration failure has occurred and reduces the possibility of missing registration failures in certain scenarios.
  • the method before receiving the first message sent by the first network, the method further includes: receiving a measurement message sent by the first network, the measurement message indicating to measure at least one cell of the second network, and reporting to the first network a measurement result of measuring at least one cell of the second network.
  • the terminal performs the measurement and the network sends information of the cell of the second network as the target cell based on the measurement result, which can take into account the signal quality of the cell after the handover and the lower power consumption of the terminal.
  • the first message includes: a handover message sent by the first network, and the information of the cell of the second network carried in the handover message is information of the cell selected based on the measurement result.
  • the handover message sent by the first network to instruct the terminal to switch is conducive to the first network to deploy the terminal and the coordination between the first network and the second network.
  • performing mobility registration with the first network includes: initiating a tracking area update TAU process to a device of the first network.
  • the function of the TAU process at least includes registering in the network, so the TAU process enables the first network to sense again that the terminal is registered in the first network, which is conducive to improving the success rate of the terminal performing services based on the first network.
  • the second aspect of the present application provides a method for avoiding service failure, characterized in that the network device applied to the first network includes: sending a first message to a terminal that has successfully registered in the first network, the first message is used to instruct the terminal to redirect or switch from the first network to the second network, the first message carries the information of the cell of the second network, and the receiving terminal sends a mobility registration message when it fails to successfully register with the cell of the second network after receiving the first message. It can be seen that the mobility registration message enables the first network to perceive that the terminal is registered in the first network, so when the terminal has a downlink service, the first network can send a paging to the terminal to avoid the terminal from failing to perform the service.
  • the method before sending the first message to the terminal that has successfully registered on the first network, the method further includes: sending a registration success message to the terminal in response to the registration message sent by the terminal to inform the terminal that the registration on the first network is successful, which is beneficial for the terminal to perform services based on the first network.
  • a third aspect of the present application provides a method for avoiding service failure, which is applied to a terminal.
  • the method includes: after the terminal is triggered to redirect or switch from a first network to a second network, determining that registration with the second network fails (i.e., failure to successfully register with the second network), and performing mobility registration with the first network so that the first network perceives that the terminal is registered in the first network, thereby improving the success rate of the terminal executing services based on the first network and reducing the possibility of service failure.
  • the method before being triggered to redirect or switch from the first network to the second network, the method further includes: successfully registering with the first network. After successfully registering with the first network, services can be performed based on the first network, and on this basis, mobility registration is performed with the first network, so that the first network again perceives that the terminal is registered with the first network, thereby improving the success rate of the terminal performing services based on the first network and reducing the possibility of service failure.
  • determining that registration with the second network has failed includes: based on information about the cell of the second network carried in the redirection message, determining that the cell of the second network does not meet the conditions for the terminal to initiate a redirection process, then the terminal will not initiate redirection to the second network, and will not initiate registration with the second network, so the registration will not succeed. It can be seen that starting from the conditions for initiating redirection, the redirection process, and the logical relationship between registration, and making a determination based on the redirection condition, it is possible to accurately determine that the registration has failed.
  • determining that registration with the second network fails includes: determining that the cell of the second network indicated by the redirection message meets the conditions for initiating redirection, initiating a redirection process to the cell of the second network, and determining that the redirection process fails. If the redirection process fails, the terminal will not initiate registration with the second network, so the registration will not succeed. It can be seen that the failure of the redirection process can accurately determine the registration failure.
  • the determination is made based on the conditions for initiating redirection and the redirection process, which is conducive to a more comprehensive assessment of whether a registration failure has occurred and reduces the possibility of missing registration failures in certain scenarios.
  • determining that registration with the second network has failed includes: determining that a cell of the second network indicated by the redirection message satisfies a condition for initiating redirection, initiating a redirection process to the cell of the second network, initiating a registration process to the cell of the second network after the redirection process, and determining that the registration process has failed. Making determinations based on the condition for initiating redirection, the redirection process, and the registration process, respectively, is conducive to a more comprehensive assessment of whether a registration failure has occurred and a reduction in the possibility of missing registration failures in certain scenarios.
  • the terminal is triggered to redirect from the first network to the second network, including: receiving a redirection message, the redirection message carrying information of a cell of the second network.
  • the network sends the information of the cell as redirection to the terminal, which is conducive to reducing power consumption of the terminal.
  • determining that registration with the second network fails includes: performing a random access procedure on a target cell of the second network indicated by the handover message, and determining that the random access procedure fails.
  • the terminal cannot perform the registration process, so judging the registration failure based on the failure of the random access process has a higher accuracy.
  • judging the registration process failure based on the failure of the random access process is conducive to a more comprehensive assessment of whether a registration failure has occurred and reducing the possibility of missing registration failures in certain scenarios.
  • determining that registration with the second network fails includes: performing a random access process on the target cell of the second network indicated by the handover message, initiating a registration process on the cell of the second network after the random access process, and determining that the registration process fails.
  • determining that the registration process fails based on the success of the random access process and the failure of the registration process is conducive to a more comprehensive assessment of whether a registration failure has occurred, and reducing the possibility of missing registration failures in certain scenarios.
  • the terminal is triggered to switch from the first network to the second network, including: receiving a measurement message, the measurement message indicating measurement of a cell of the second network, reporting a measurement result of the measurement of the cell of the second network, and receiving a switching message, the switching message carrying information of a target cell selected based on the measurement result.
  • the terminal performs measurement and the network sends information of the cell of the second network as the target cell based on the measurement result, which can take into account the signal quality of the cell after the switch and the lower power consumption of the terminal.
  • performing mobility registration with the first network includes: initiating a tracking area update TAU process to a device of the first network.
  • the function of the TAU process at least includes registering in the network, so the TAU process enables the first network to sense again that the terminal is registered in the first network, which is conducive to improving the success rate of the terminal performing services based on the first network.
  • the fourth aspect of the present application provides a method for avoiding service failure, which is applied to a network device of a first network.
  • the method includes: after triggering a terminal to redirect or switch from the first network to the second network, receiving a mobility registration message sent by the terminal, the mobility registration message enables the first network to perceive that the terminal is registered in the first network, so that when the terminal has a downlink service, the first network can send a paging to the terminal to avoid the terminal from failing to perform the service.
  • the terminal before triggering the terminal to redirect or switch from the first network to the second network, it also includes: in response to the registration message sent by the terminal, sending a registration success message to the terminal to inform the terminal that the registration in the first network is successful, which is conducive to the terminal to perform services based on the first network.
  • the fifth aspect of the present application provides an electronic device, comprising: a memory and at least one processor, the memory being used to store an application, and the at least one processor being used to execute the application to implement the method for avoiding business failure provided in the first aspect, second aspect, third aspect or fourth aspect of the present application.
  • the sixth aspect of the present application provides a chip, characterized in that when the chip is deployed inside a terminal, the chip is used to control the terminal to implement the method for avoiding service failure provided by the first aspect, second aspect, third aspect or fourth aspect of the present application.
  • the seventh aspect of the present application provides a computer storage medium for storing a computer program.
  • the computer program When the computer program is executed, the method for avoiding business failure provided by the first aspect, second aspect, third aspect or fourth aspect of the present application is implemented.
  • Figure 1a is an example diagram of a mobile phone residing on a 5G network
  • FIG1b is an example diagram of a mobile phone executing a call service in a 4G network
  • FIG1c is a flowchart showing a failure of a mobile phone to perform a call service
  • FIG2 is a flow chart of a method for avoiding service failure disclosed in an embodiment of the present application.
  • FIG3 is a flow chart of another method for avoiding service failure disclosed in an embodiment of the present application.
  • FIG4 is a flowchart of another method for avoiding service failure disclosed in an embodiment of the present application.
  • FIG5 is a flowchart of another method for avoiding service failure disclosed in an embodiment of the present application.
  • FIG. 6 is a diagram showing an example of the hardware structure of a terminal disclosed in an embodiment of the present application.
  • one or more refers to one, two or more; “and/or” describes the association relationship of the associated objects, indicating that three relationships may exist; for example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.
  • the character “/” generally indicates that the objects associated before and after are in an "or” relationship.
  • references to "one embodiment” or “some embodiments” etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application.
  • the phrases “in one embodiment”, “in some embodiments”, “in some other embodiments”, “in some other embodiments”, etc. appearing in different places in this specification do not necessarily all refer to the same embodiment, but mean “one or more but not all embodiments", unless otherwise specifically emphasized in other ways.
  • the terms “including”, “comprising”, “having” and their variations all mean “including but not limited to”, unless otherwise specifically emphasized in other ways.
  • the service failure of the terminal is illustrated by taking the called failure of the terminal as an example:
  • the mobile phone In Figure 1a, the user does not make or receive a call.
  • the mobile phone usually resides in a cell of the 5G network (indicated by "5G” in Figures 1a and 1b). If the user wants to make or receive a call, as shown in Figure 1b, the mobile phone is switched to the LTE network (indicated by "4G” in Figures 1a and 1b).
  • the inventors found during the research process that after a call ends, if the mobile phone as the called party of the call is called, the call may not be connected.
  • the 4G network equipment shown in Figure 1c includes the wireless network equipment (also called access network equipment) and core network equipment of the 4G network, and the 5G network equipment includes the wireless network equipment and core network equipment of the 5G network.
  • a step shown in Figure 1c may be a summary of multiple steps. For details, please refer to the communication protocol, which will not be repeated here.
  • the mobile phone is successfully registered on the 5G network (i.e., successfully registered on the 5G network).
  • the mobile phone successfully registers on the 5G network by interacting with the 5G network equipment.
  • the 5G network equipment responds to the call service and triggers the emergency procedures Fallback (EPS FB).
  • EPS FB emergency procedures Fallback
  • a mobile phone in a call service, can be either the caller or the called party.
  • the mobile phone is successfully registered on the 4G network.
  • EPS FB triggers the mobile phone to register with the 4G network.
  • the mobile phone completes the registration process by interacting with the 4G network.
  • the registration may be successful or unsuccessful. Here we assume that the registration is successful.
  • the mobile phone performs a call service via the 4G network.
  • the 4G network device In response to the end of the call, the 4G network device sends a Radio Resource Control (RRC) release message to the mobile phone.
  • RRC Radio Resource Control
  • the RRC Release message carries information about cells in the 5G network (such as frequency).
  • the RRC Release message triggers the mobile phone to execute a process of redirecting to the 5G network.
  • the mobile phone first determines whether the cell indicated by the 5G cell information carried by the RRC Release message meets the S criterion. In this embodiment, it is assumed that the judgment result is not satisfied, that is, S106.
  • the mobile phone determines that the 5G cell does not meet the S criterion.
  • the mobile phone determines that the 5G cell does not meet the S criterion, which means that the 5G cells sent by the 4G network equipment do not meet the redirection conditions. Therefore, the mobile phone does not perform the subsequent steps of redirection. The mobile phone is still registered on the 4G network.
  • S107-S108 are executed according to the protocol.
  • the 4G network device In response to the terminal being called, the 4G network device sends a paging message to the terminal.
  • the mobile phone performs call service based on the 4G network.
  • the process shown in FIG. 1c takes the called call service as an example.
  • the replaceable step of S107 is that the 4G device sends a paging message to the mobile phone in response to the downlink data service of the terminal
  • the replaceable step of S108 is that the mobile phone performs data service based on the 4G network. It can be seen that in addition to the possibility of failure of the called call service, the data service also has the possibility of failure.
  • an embodiment of the present application provides a method for avoiding service failure, which is applied to the following scenario: a terminal is registered in a first network, the terminal is triggered to redirect or switch from the first network to a second network, and attempts to register with the second network.
  • Terminals include but are not limited to: mobile phones, tablet computers, computers with wireless transceiver functions, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminals in industrial control, vehicle-mounted terminal devices, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, wearable terminal devices, etc.
  • Terminals may also be sometimes referred to as terminal devices, user equipment (UE), access terminal devices, vehicle-mounted terminals, industrial control terminals, UE units, UE stations, mobile stations, mobile stations, remote stations, remote terminal devices, mobile devices, UE terminal devices, terminal devices, wireless communication devices, UE agents or UE devices, etc.
  • Terminals may also be fixed terminals or mobile terminals.
  • the first network and the second network are wireless communication networks of different standards.
  • the first network includes but is not limited to: second generation (2G) communication network, third generation (3G) communication network, long term evolution (LTE) network (i.e. 4G network), fifth generation (5G) communication network, LTE and 5G hybrid architecture network, 5G New Radio (5G NR) network, and new communication networks that will emerge in the future development of communication, etc.
  • 2G second generation
  • 3G third generation
  • LTE long term evolution
  • 5G fifth generation
  • LTE and 5G hybrid architecture network LTE and 5G hybrid architecture network
  • 5G New Radio (5G NR) network 5G New Radio
  • the second network includes, but is not limited to: a second generation (2G) communication network, a third generation (3G) communication network, an LTE network, a fifth generation (5G) communication network, an LTE and 5G hybrid architecture network, a 5G new wireless (5G New Radio, 5G NR) network, and new communication networks that will emerge in future communication developments.
  • 2G second generation
  • 3G third generation
  • 5G fifth generation
  • LTE and 5G hybrid architecture network a 5G new wireless (5G New Radio, 5G NR) network
  • 5G New Radio, 5G NR 5G New Radio
  • the steps S102-S103 shown in Figure 1c i.e. triggering the terminal to register in the first network through EPS FB, is a specific implementation method.
  • the terminal can also be successfully registered in the first network based on other implementation methods. For example, the terminal is powered on, stays resident and successfully registers in the first network.
  • S105 shown in FIG. 1c is an example of 4G network triggered redirection, and is not intended to be limiting.
  • Another example of triggering redirection is that the terminal measures quality degradation of the 4G network (ie, measurement-based redirection).
  • Figure 2 is a process of a method for avoiding business failure provided in an embodiment of the present application, which is applied in the same scenario as the process shown in Figure 1c.
  • scenario-related steps S201-S205
  • the 5G network device responds to the call service and triggers EPS FB.
  • S203 The terminal successfully registers on the 4G network. See S103.
  • S204 The terminal responds to the called party in the 4G network and performs a call service.
  • the 4G network device In response to the end of the call, the 4G network device sends a radio resource control RRC Release message to the terminal.
  • the RRC Release message carries information about cells in the 5G network (such as frequency).
  • the RRC Release message triggers the terminal to execute a process of redirecting to the 5G network.
  • the terminal first determines whether the cell indicated by the 5G cell information carried by the RRC Release message meets the S criterion. In this embodiment, it is assumed that the judgment result is not satisfied, that is, S206.
  • the terminal determines that the 5G cell does not meet the S criterion.
  • the terminal determines that the 5G cell does not meet the S criterion, indicating that the 5G cells issued by the 4G network device do not meet the redirection conditions (i.e., the conditions for the terminal to initiate the redirection process to the network). Therefore, the terminal does not perform the subsequent steps of redirection, and cannot complete the redirection to the 5G network and cannot register in the 5G network. Therefore, S206 can be understood as a specific way to determine that the registration to the 5G network fails (i.e., the terminal fails to successfully register to the 5G network). So the mobile phone is still registered in the 4G network.
  • the terminal sends a Tracking Area Update (TAU) request message to the 4G network device.
  • TAU Tracking Area Update
  • the 4G network device sends a TAU acceptance message to the terminal.
  • the terminal sends a TAU completion message to the 4G network device.
  • the terminal initiates a TAU process to the 4G network and completes a TAU process with the 4G network. Because the function of the TAU process is to perform mobility registration with the network, the 4G network can perceive again that the terminal is registered in the 4G network.
  • the 4G network In response to the terminal being called, the 4G network sends a paging message to the terminal.
  • One of the functions of paging is to trigger the establishment of an RRC connection between the terminal and the network.
  • the terminal can only perform services based on the network when the terminal and the network are in the RRC connection state. It can be seen that the purpose of sending paging to the terminal is to lay the foundation for the execution of subsequent services.
  • S210-S211 all take the call service as an example.
  • the terminal and the network when the terminal and the network are in the RRC connection state, the terminal can also implement data services based on the network. Therefore, the call service described in this embodiment can be replaced by a data service.
  • the terminal performs a call service based on the 4G network.
  • the terminal determines that the 5G cells sent by the 4G network do not meet the redirection conditions, the terminal initiates a TAU process to the 4G network, so that the 4G network perceives that the terminal is registered in the 4G network again, thereby increasing the possibility of the 4G network responding to the terminal being called and sending paging, and reducing the possibility of called service failure.
  • FIG3 is a process of another method for avoiding service failure disclosed in an embodiment of the present application, which differs from the process shown in FIG2 mainly in the implementation method of registration failure to the 5G network.
  • the terminal successfully registers on the 4G network.
  • the triggering method for the successful registration of the terminal on the 4G network is no longer limited (taking S202 as an example in FIG. 2 ).
  • the 4G network responds to the call ending and triggers the terminal to initiate redirection as an example.
  • the terminal initiates redirection based on measurement as an example.
  • the terminal periodically measures the signal quality of the 4G network.
  • the signal of the 4G network is degraded, it initiates redirection to the 5G network.
  • the signal of the 4G network when the signal of the 4G network is degraded, it first requests redirection from the 4G network and receives a message indicating redirection (such as an RRC release message) sent by the 4G network.
  • the message carries information (such as frequency) of the 5G cell sent by the 4G network as the redirection.
  • the terminal initiates redirection by first measuring whether the 5G cell meets the S criterion. This embodiment takes satisfying the S criterion, i.e., S302, as an example.
  • the terminal determines that the 5G cell meets the S criterion.
  • the frequency of the 5G cell is pre-configured in the terminal. In other implementations, after the terminal determines that the signal of the 4G network is degraded, the frequency of the 5G cell is obtained from the 4G network.
  • S303 The terminal initiates redirection to the 5G network device (i.e., redirection process).
  • the redirection may succeed or fail. Only after the redirection succeeds can the terminal initiate registration with the 5G network.
  • S304 The terminal determines that the registration has failed (i.e., it has successfully registered with the 5G network).
  • a registration failure may be a failure in the redirection process or a failure in the registration process.
  • the terminal if the terminal does not receive a registration success message sent by the 5G network within a preset time after initiating redirection to the 5G network, the registration is determined to have failed.
  • registration failure means that the terminal cannot perform services through the 5G network.
  • the terminal can only perform services through the 4G network. Therefore, the terminal performs S305 to increase the possibility of successful service execution.
  • S305 The terminal initiates a TAU process to the 4G network device.
  • the implementation steps of the TAU process can be seen in S207-S209. It can be understood that the terminal sends a TAU request message initiates the TAU process.
  • S304 and S305 can be replaced by: when the terminal fails to register with the 5G network (failed to successfully register with the 5G network), the terminal initiates a TAU process to the 4G network device.
  • the terminal may fail to register with the 5G network. For example, due to the failure of the S criterion, the UE finds that the frequencies in the RRC REL message do not meet the S criterion after detecting the frequencies, so the call cannot be connected. In some embodiments, after identifying such a problem scenario, the UE actively initiates a TAU to the LTE network device, so that the terminal can complete the registration on LTE after the redirection to NR fails, thereby avoiding the compatibility problem of the call cannot be connected in the existing network.
  • the terminal executes the service through the 4G network.
  • the 4G network sends a paging to the terminal to trigger the terminal to perform a call service based on the 4G network.
  • the 4G network receives data sent to the terminal, the 4G network sends a paging to the terminal to trigger the terminal to perform a data service based on the 4G network.
  • the process shown in Figure 3 determines whether the registration with the 5G network is successful based on whether the registration success message is received.
  • the terminal initiates a TAU (i.e., mobility registration) to the 4G network so that the 4G network perceives that the terminal is registered in the 4G network, so as to improve the 4G network's ability to send paging to the terminal when the terminal has downlink services, thereby reducing the possibility of terminal service failure.
  • TAU i.e., mobility registration
  • the 4G network triggers the terminal to switch to the 5G network.
  • the following will focus on the process of avoiding service failure in the switching scenario.
  • FIG. 4 is another method for avoiding service failure disclosed in an embodiment of the present application, focusing on the process in a switching scenario.
  • FIG. 4 includes the following steps:
  • the terminal successfully registers on the 4G network.
  • the triggering step ie, the pre-process for the terminal to register on the 4G network is not limited.
  • the scenario where the 4G network instructs the terminal to switch to the 5G network is taken as an example, and the triggering condition for triggering the 4G network to instruct the terminal to switch is not limited.
  • the 4G network instructs the terminal to switch to the 5G network through S402-S405.
  • the 4G network device sends a message to the terminal to measure the 5G cell.
  • the message sent by the 4G network device carries information of the 5G cell to be measured, such as the frequency.
  • the terminal measures the 5G cell and obtains a measurement result.
  • the terminal measures the 5G cell to be measured sent by the 4G network device. In other implementations, the terminal measures the 5G cell with a frequency point stored locally.
  • the terminal sends the measurement result to the 4G network device.
  • the 4G network device sends information of the target cell obtained based on the measurement result to the terminal.
  • the cell where the terminal is currently located is called the source cell, and the target cell can be understood as the cell corresponding to the source cell where the terminal is located after the handover is successfully completed.
  • the target cell can be understood as the 5G cell to which the terminal will switch from the source cell.
  • the quality of the 5G cell is confirmed based on the measurement results, and the cell with better quality is used as the target cell.
  • S406 The terminal initiates a handover to the target cell.
  • One implementation method of the terminal initiating handover to the target cell is: the terminal initiates a random access procedure to the target cell.
  • the purpose of the random access procedure is to access the target cell.
  • S407 The terminal determines that random access to the target cell fails (ie, the target cell is not successfully accessed).
  • the necessary condition for successful handover is that the terminal can successfully access the target cell randomly, so it is understandable that if the terminal fails to randomly access the target cell, it cannot successfully register in the target cell. Therefore, the terminal is still registered in the 4G network.
  • determining that random access to the target cell fails is an implementation method for determining that registration in the target cell fails, and a replaceable step of S407 is: the terminal determines that the registration process in the target cell fails. It is understandable that after the random access process is successful, the terminal will initiate a registration process to the target cell. If the registration process fails, such as the terminal does not receive a registration success message within a preset time, the terminal determines that the registration has failed.
  • S408 The terminal initiates mobility registration to the 4G network device.
  • mobility registration is implemented through the TUA process, that is, the terminal registers with the 4G network through the TAU process.
  • the 4G network device sends a paging message in response to the terminal being called or receiving downlink data from the terminal.
  • the terminal executes a service based on the 4G network.
  • the terminal determines that the registration in the 5G network has failed through the failure of random access to the target cell, and therefore initiates mobility registration to the 4G network so that the 4G network can perceive again that the terminal is registered to the 4G network, thereby avoiding the 4G network not sending paging to the terminal when the terminal has downlink services, thereby avoiding the problem of service failure.
  • a first network such as a 4G network
  • a second network such as a 5G network
  • FIG5 is another method for avoiding service failure provided in an embodiment of the present application, which differs from the above-mentioned embodiment in that it is applied to the scenario of redirecting or switching from a 5G network to a 4G network.
  • the terminal successfully registers on the 5G network.
  • the terminal can register on the 5G network in a variety of scenarios, for example, the mobile phone is turned on and resides on the 5G network and successfully registers on the 5G network.
  • the scenario in which the terminal registers on the 5G network is not limited here.
  • the 5G network device sends a message to the terminal to redirect or register to the 4G network.
  • the scenario that triggers the 5G network device to send a message to the terminal to redirect or register to the 4G network is not limited here.
  • An example of a triggering scenario is that the 5G network does not support voice services, and the terminal initiates a call or is called.
  • the message to redirect or register to the 4G network is an EPS FB message. It is understandable that the message to redirect or register to the 4G network carries the information of the cell of the 4G network (such as the frequency).
  • S503 The terminal determines that registration with the 4G network fails.
  • the terminal determines that the 4G cell does not meet the S criteria and does not initiate redirection to the 4G network cell. In other implementations, the terminal determines that the 4G cell meets the S criteria and initiates redirection to the 4G network cell.
  • the redirection may fail or may fail. Only after the redirection is successful, there is a possibility of initiating the registration process to the 4G network cell. Redirection failure or registration process failure will be determined as registration failure.
  • the terminal performs a random access process to the cell of the 4G network based on the information of the cell of the 4G network carried in the message of switching to the 4G network. If the random access fails, the terminal determines that the registration with the 4G cell has failed. In other implementations, if the random access to the 4G network succeeds, but the registration process with the 4G network fails, the terminal determines that the registration with the 4G cell has failed. The terminal determines that registration with the 4G cell has failed.
  • S504 The terminal performs mobility registration with the 5G network device.
  • the role of mobility registration is to register in the 5G network. It is understandable that, if the terminal has successfully registered in the 5G network, mobility registration can achieve the purpose of re-registration, so that the 5G network can perceive the terminal registered in the 5G network again.
  • the 5G network device sends a paging message to the terminal in response to the terminal being called or receiving downlink data from the terminal.
  • the terminal executes services based on the 5G network.
  • Fig. 6 is a diagram showing an example of the structure of the terminal described in the above embodiment.
  • the terminal 300 may include a processor 310, an external memory interface 320, an internal memory 321, a display screen 330, a camera 340, an antenna 1, an antenna 2, a mobile communication module 350, a wireless communication module 360, and an audio module 370.
  • the structure illustrated in this embodiment does not constitute a specific limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently.
  • the components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.
  • the processor 310 may include one or more processing units, for example, the processor 310 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and/or a neural-network processing unit (NPU), etc.
  • AP application processor
  • GPU graphics processor
  • ISP image signal processor
  • DSP digital signal processor
  • NPU neural-network processing unit
  • Different processing units may be independent devices or integrated into one or more processors.
  • the interface connection relationship between the modules illustrated in this embodiment is only a schematic illustration and does not constitute a structural limitation on the terminal 300.
  • the terminal 300 may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.
  • the wireless communication function of the terminal can be implemented through antenna 1, antenna 2, mobile communication module 350, wireless communication module 360, modem processor and baseband processor.
  • Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals.
  • Each antenna in the terminal can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve the utilization of the antennas.
  • antenna 1 can be reused as a diversity antenna for a wireless local area network.
  • the antenna can be used in combination with a tuning switch.
  • the mobile communication module 350 can provide solutions for wireless communications including 2G/3G/4G/5G, etc., applied to the terminal.
  • the mobile communication module 350 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc.
  • the mobile communication module 350 can receive electromagnetic waves from the antenna 1, and filter, amplify, and process the received electromagnetic waves, and transmit them to the modem processor for demodulation.
  • the mobile communication module 350 can also amplify the signal modulated by the modem processor, and convert it into electromagnetic waves for radiation through the antenna 1.
  • the mobile communication module At least some functional modules of the mobile communication module 350 may be arranged in the processor 310. In some embodiments, at least some functional modules of the mobile communication module 350 may be arranged in the same device as at least some modules of the processor 310.
  • the terminal initiates or receives a call request through the mobile communication module 350 and the antenna 1.
  • the wireless communication module 360 can provide wireless communication solutions including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared (IR), etc., which are applied on the terminal.
  • WLAN wireless local area networks
  • BT wireless fidelity
  • GNSS global navigation satellite system
  • FM frequency modulation
  • NFC near field communication
  • IR infrared
  • the wireless communication module 360 can be one or more devices integrating at least one communication processing module.
  • the wireless communication module 360 receives electromagnetic waves via the antenna 3, modulates the frequency of the electromagnetic wave signal and performs filtering, and sends the processed signal to the processor 310.
  • the wireless communication module 360 can also receive the signal to be sent from the processor 310, modulate the frequency of it, amplify it, and convert it into electromagnetic waves for radiation through the antenna 2.

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Abstract

本申请提供一种避免业务失败的方法及装置，应用于终端，方法包括：在终端被触发从第一网络向第二网络重定向或切换后，判定向第二网络注册失败，向第一网络进行移动性注册，以使得第一网络感知终端注册在第一网络，提高终端基于第一网络执行业务的成功率，降低业务失败的可能性。

Description

用于避免业务失败的方法及装置
本申请要求于2022年11月23日提交中国专利局、申请号为202211468329.1、发明名称为“用于避免业务失败的方法及装置”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
本申请涉及通信技术领域，尤其涉及一种用于避免业务失败的方法及装置。
背景技术
随着移动通信技术的发展，终端能够基于多种制式的网络进行无线通信。多种制式的网络包括但不限于：5G网络和4G网络。
虽然终端能够基于多种制式的网络进行无线通信，但仍存在通话或数据业务失败的问题。
发明内容
本申请提供了一种用于避免业务失败的方法及装置，目的在于解决如何避免业务失败的问题。
本申请的第一方面提供一种避免业务失败的方法，包括：终端向第一网络发起注册并成功注册到第一网络，终端接收第一网络发送的第一消息，第一消息用于指示终端从第一网络重定向或切换到第二网络，第一消息里携带了第二网络的小区的信息，当终端接收到第一消息后，未能成功注册到第二网络的小区的情况下，终端向第一网络发起移动性注册。可见，在终端未能成功注册到第二网络的小区的情况下，终端通过再向第一网络发起移动性注册，使得第一网络再次感知到终端注册在第一网络，在终端有业务的情况下，第一网络能够响应业务向终端发起寻呼，提高终端重定向失败或切换失败后，成功执行业务的可能性。
在一些实现方式中，在向所述第一网络发起移动性注册之后，还包括：在终端与第一网络之间完成移动性注册后，终端接收寻呼，寻呼由第一网络在终端被叫或接收到终端的下行数据的情况下发送，终端基于第一网络执行通话或数据业务。可见，移动性注册完成后，终端在被叫或有下行数据的情况下，第一网络能够向终端下发寻呼，使得终端能够基于第一网络执行业务，所以，能够提高终端重定向失败或切换失败后，成功执行业务的可能性。
在一些实现方式中，向所述第一网络发起移动性注册包括：向所述第一网络发起跟踪区域更新TAU流程。因此，完成所述移动性注册的方式包括：完成TAU流程。TAU流程的功能至少包括在网络中完成注册，因此TAU流程使得第一网络再次感应到终端注册在第一网络中，有利于提高终端基于第一网络执行业务的成功率。
在一些实现方式中，未能成功注册到第二网络的小区，包括：第二网络的小区不满足终端发起重定向流程的条件。不满足终端发起重定向流程(可简称为重定向)的条件，则终端不会向第二网络发起重定向，则终端不会向第二网络发起注册路程，因此，终端不能成功注册到第二网络的小区，可见，第二网络的小区不满足终端发起重定向流程的条件为 终端未能成功注册到第二网络的小区的一种实现方式，有利于更为全面地识别出注册失败，不会遗漏某些场景下注册失败的情况。
在一些实现方式中，未能成功注册到第二网络的小区，包括：当第二网络的小区满足终端发起重定向流程的条件的情况下，终端向第二网络的小区发起重定向流程，重定向流程失败。可见，基于终端发起重定向的条件、重定向流程以及注册之间的逻辑关系，将发起重定向流程的条件以及重定向流程失败作为未能成功注册到第二网络小区的一种实现方式，有助于更为全面地识别出注册失败，降低遗漏某些场景下注册失败的可能性。
在一些实现方式中，未能成功注册到第二网络的小区，包括：当第二网络的小区满足终端发起重定向流程的条件的情况下，终端向第二网络的小区发起重定向流程，终端在重定向流程之后，向第二网络的小区发起注册流程，注册流程失败，分别基于发起重定向的条件、重定向流程以及注册流程进行判定，有利于更全面地评估是否发生了注册失败，降低遗漏某些场景下注册失败的可能性。
在一些实现方式中，第一消息包括：无线资源控制释放RRC Release消息。在释放RRC的同时能够指示终端执行重定向流程，节省信令资源。
在一些实现方式中，终端发起重定向流程的条件，包括：S准则，与通信协议兼容，有利于准确且快捷地判定终端是否向网络发起重定向流程。
在一些实现方式中，未能成功注册到第二网络的小区，包括：终端基于第二网络的小区的信息，向第二网络的小区发起随机接入流程，随机接入流程失败。在切换场景下，基于切换消息、随机接入流程以及注册流程之间的逻辑关系，以随机接入流程失败为依据判断注册流程失败，有利于更全面地评估是否发生了注册失败，降低遗漏某些场景下注册失败的可能性。
在一些实现方式中，未能成功注册到第二网络的小区，包括：终端基于第二网络的小区的信息，向第二网络的小区发起随机接入流程，终端在随机接入流程之后，向第二网络的小区发起注册流程，注册流程失败。在切换场景下，基于切换消息、随机接入流程以及注册流程之间的逻辑关系，以向第二网络执行的随机接入流程成功和注册流程失败作为未能成功注册到第二网络的具体方式，有利于更全面地评估是否发生了注册失败，降低遗漏某些场景下注册失败的可能性。
在一些实现方式中，在接收第一网络发送的第一消息之前，还包括：接收第一网络发送的测量消息，测量消息指示对第二网络的至少一个小区进行测量，向第一网络上报对第二网络的至少一个小区进行测量的测量结果。由终端进行测量并由网络基于测量结果下发作为目标小区的第二网络的小区的信息，能够兼顾切换后小区的信号的质量和终端较低的功耗。
在一些实现方式中，第一消息包括：第一网络发送的切换消息，切换消息携带的第二网络的小区的信息为基于测量结果选择的小区的信息。由第一网络下发切换消息指示终端进行切换，有利于第一网络对终端进行调配，以及第一网络与第二网络之间进行协调。
在一些实现方式中，向第一网络进行移动性注册，包括：向第一网络的设备发起跟踪区域更新TAU流程。TAU流程的功能至少包括注册在网络中，因此TAU流程使得第一网络再次感应到终端注册在第一网络中，有利于提高终端基于第一网络执行业务的成功率。
本申请的第二方面提供一种避免业务失败的方法，其特征在于，应用于第一网络的网络设备，包括：向已成功注册在第一网络的终端发送第一消息，第一消息用于指示终端从第一网络重定向或切换到第二网络，第一消息里携带了第二网络的小区的信息，接收终端在接收到第一消息后，未能成功注册到第二网络的小区的情况下发送的移动性注册消息。可见，移动性注册消息使得第一网络感知终端注册在第一网络，因此在终端有下行业务的情况下，第一网络能够向终端下发寻呼，以避免终端执行业务失败。
在一些实现方式中，在向已成功注册在第一网络的终端发送第一消息之前，还包括：响应于终端发送的注册消息，向终端发送注册成功消息，以告知终端在第一网络注册成功，有利于终端基于第一网络执行业务。
本申请的第三方面提供一种避免业务失败的方法，应用于终端，方法包括：在终端被触发从第一网络向第二网络重定向或切换后，判定向第二网络注册失败(即未能成功注册到第二网络)，向第一网络进行移动性注册，以使得第一网络感知终端注册在第一网络，提高终端基于第一网络执行业务的成功率，降低业务失败的可能性。
在一些实现方式中，在被触发从第一网络向第二网络重定向或切换之前，还包括：在第一网络注册成功。在第一网络注册成功，能够基于第一网络执行业务，在此基础上，向第一网络进行移动性注册，使得第一网络再次感知终端注册在第一网络，提高终端基于第一网络执行业务的成功率，降低业务失败的可能性。
在一些实现方式中，判定向第二网络注册失败，包括：基于重定向消息携带的第二网络的小区的信息，判定第二网络的小区不满足终端发起重定向流程的条件，则终端不会向第二网络发起重定向，也就不会向第二网络发起注册，所以注册不会成功，可见，从发起重定向的条件、重定向流程以及注册之间的逻辑关系入手，以重定向条件为依据进行判定，能够准确地判定注册失败。
在一些实现方式中，判定向第二网络注册失败，包括：判定重定向消息指示的第二网络的小区满足发起重定向的条件，向第二网络的小区发起重定向流程，判定重定向流程失败。重定向流程失败则终端不会向第二网络发起注册，所以注册不会成功，可见，重定向流程失败能够准确地判定注册失败。并且，基于终端发起重定向的条件、重定向流程以及注册之间的逻辑关系，分别基于发起重定向的条件和重定向流程进行判定，有利于更全面地评估是否发生了注册失败，降低遗漏某些场景下注册失败的可能性。
在一些实现方式中，判定向第二网络注册失败，包括：判定重定向消息指示的第二网络的小区满足发起重定向的条件，向第二网络的小区发起重定向流程，在重定向流程之后，向第二网络的小区发起注册流程，判定注册流程失败，分别基于发起重定向的条件、重定向流程以及注册流程进行判定，有利于更全面地评估是否发生了注册失败，降低遗漏某些场景下注册失败的可能性。
在一些实现方式中，终端被触发从第一网络向第二网络重定向，包括：接收重定向消息，重定向消息携带第二网络的小区的信息。由网络向终端下发作为重定向的小区的信息，有利于降低终端的功耗。
在一些实现方式中，判定向第二网络注册失败，包括：基于切换消息指示的第二网络的目标小区，向目标小区进行随机接入流程，判定随机接入流程失败。随机接入流程失败 则终端无法进行注册流程，因此以随机接入流程失败判定注册失败具有较高的准确性。在切换场景下，基于切换消息、随机接入流程以及注册流程之间的逻辑关系，以随机接入流程失败为依据判断注册流程失败，有利于更全面地评估是否发生了注册失败，降低遗漏某些场景下注册失败的可能性。
在一些实现方式中，判定向第二网络注册失败，包括：基于切换消息指示的第二网络的目标小区，向目标小区进行随机接入流程，在随机接入流程之后，向第二网络的小区发起注册流程，判定注册流程失败。在切换场景下，基于切换消息、随机接入流程以及注册流程之间的逻辑关系，以随机接入流程成功和注册流程失败为依据判断注册流程失败，有利于更全面地评估是否发生了注册失败，降低遗漏某些场景下注册失败的可能性。
在一些实现方式中，终端被触发从第一网络向第二网络切换，包括：接收测量消息，测量消息指示对第二网络的小区进行测量，上报对第二网络的小区进行测量的测量结果，接收切换消息，切换消息携带基于测量结果选择的目标小区的信息。由终端进行测量并由网络基于测量结果下发作为目标小区的第二网络的小区的信息，能够兼顾切换后小区的信号的质量和终端较低的功耗。
在一些实现方式中，向第一网络进行移动性注册，包括：向第一网络的设备发起跟踪区域更新TAU流程。TAU流程的功能至少包括注册在网络中，因此TAU流程使得第一网络再次感应到终端注册在第一网络中，有利于提高终端基于第一网络执行业务的成功率。
本申请的第四方面提供一种避免业务失败的方法，应用于第一网络的网络设备，方法包括：在触发终端从第一网络向第二网络重定向或切换后，接收终端发送的移动性注册消息，移动性注册消息使得第一网络感知终端注册在第一网络，因此在终端有下行业务的情况下，第一网络能够向终端下发寻呼，以避免终端执行业务失败。
在一些实现方式中，在触发终端从第一网络向第二网络重定向或切换之前，还包括：响应于终端发送的注册消息，向终端发送注册成功消息，以告知终端在第一网络注册成功，有利于终端基于第一网络执行业务。
本申请的第五面提供一种电子设备，包括：存储器以及至少一个处理器，所述存储器用于存储应用程序，所述至少一个处理器用于执行所述应用程序，以实现本申请的第一方面、第二方面、第三方面或第四方面提供的避免业务失败的方法。
本申请的第六方面提供一种芯片，其特征在于，当所述芯片被部署在终端内部时，所述芯片用于控制所述终端实现本申请的第一方面、第二方面、第三方面或第四方面提供的避免业务失败的方法。
本申请的第七方面提供一种计算机存储介质，用于存储计算机程序，计算机程序被执行时，实现本申请的第一方面、第二方面、第三方面或第四方面提供的避免业务失败的方法。
附图说明
图1a为手机驻留在5G网络的示例图；
图1b为手机在4G网络中执行通话业务的示例图；
图1c为手机执行通话业务失败的流程示例图；
图2为本申请实施例公开的一种避免业务失败的方法的流程图；
图3为本申请实施例公开的又一种避免业务失败的方法的流程图；
图4为本申请实施例公开的又一种避免业务失败的方法的流程图；
图5为本申请实施例公开的又一种避免业务失败的方法的流程图；
图6为本申请实施例公开的终端的硬件结构示例图。
具体实施方式
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清楚、完整地描述。以下实施例中所使用的术语只是为了描述特定实施例的目的，而并非旨在作为对本申请的限制。如在本申请的说明书和所附权利要求书中所使用的那样，单数表达形式“一个”、“一种”、“所述”、“上述”、“该”和“这一”旨在也包括例如“一个或多个”这种表达形式，除非其上下文中明确地有相反指示。还应当理解，在本申请实施例中，“一个或多个”是指一个、两个或两个以上；“和/或”，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的情况，其中A、B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。
在本说明书中描述的参考“一个实施例”或“一些实施例”等意味着在本申请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。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。
本申请实施例涉及的多个，是指大于或等于两个。需要说明的是，在本申请实施例的描述中，“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。
下面结合图1a-图1c，以终端通话被叫失败为例，对终端的业务失败进行举例说明：
图1a中，用户没有拨打电话或接听电话，在此情况下，手机通常驻留在5G网络(图1a和图1b中以“5G”表示)的小区(cell)中。如果用户要拨打电话或接听电话，如图1b所示，将手机切换至LTE网络(图1a和图1b中以“4G”表示)。
但发明人在研究的过程中发现，在通话结束后，如果手机作为通话的被叫方被呼叫，可能通话不能接通。
下面将结合图1c对通话不能接通的原因进行分析说明，图1c中所示的4G网络设备包括4G网络的无线网设备(又可称为接入网设备)和核心网设备，5G网络设备包括5G网络的无线网设备和核心网设备，并且，图1c所示的某个步骤可能为多个步骤的概括，具体可参见通信协议，这里不再赘述。
图1c中包括以下步骤：
S101、手机在5G网络注册成功(即成功注册到5G网络)。
可以理解的是，手机通过与5G网络设备的交互，实现在5G网络成功注册。
S102、5G网络设备响应于通话业务，触发紧急步骤回落(Emergency procedures Fallback，EPS FB)。
可以理解的是，通话业务中手机可以是主叫也可以是被叫。
S103、手机在4G网络注册成功。
可以理解的是，EPS FB触发手机向4G网络进行注册，手机通过与4G网络交互完成注册过程，可能注册成功也可以注册不成功，这里假设注册成功。
S104、手机通过4G网络执行通话业务。
S105、4G网络设备响应于通话结束，向手机发送无线资源控制(Radio Resource Control，RRC)释放(Release)消息。
RRC Release消息携带5G网络中的小区的信息(如频点)。RRC Release消息会触发手机执行重定向到5G网络的流程，在该流程中，手机先判断RRC Release消息携带的5G小区的信息指示的小区是否满足S准则。本实施例中，假设判断结果为不满足，即S106。
S106、手机判定5G小区不满足S准则。
可以理解的是，手机判定5G小区不满足S准则，说明4G网络设备下发的5G小区均不满足重定向的条件，因此，手机不执行重定向的后续步骤。手机仍然注册在4G网络。
在此情况下，如果手机作为通话的被叫方被呼叫，按照协议，执行S107-S108。
S107、4G网络设备响应于终端被叫，向终端下发寻呼。
S108、手机基于4G网络进行通话业务。
发明人在实际的网络进行测试研究的过程中发现，4G网络设备有不下发寻呼的可能性，即S107有可能不被执行，在此情况下，S108也无法执行，也就是说，手机被叫通话无法接通，通话业务失败。
可以理解的是，图1c所示的流程以被叫通话业务为例，除此之外，S107的可替换步骤为响应于终端的下行数据业务，4G设备向手机下发寻呼，S108的可替换步骤为手机基于4G网络进行数据业务。可见，除了被叫通话业务有失败的可能之外，数据业务也有失败的可能性。
为了解决移动通信的业务失败的问题，本申请的实施例提供了一种避免业务失败的方法，应用于以下场景：终端注册在第一网络中，终端被触发从第一网络向第二网络重定向或切换，并尝试向第二网络注册。
终端包括但限于：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、车载终端设备、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、可穿戴终端设备等等。终端有时也可以称为终端设备、用户设备(user equipment，UE)、接入终端设备、车载终端、工业控制终端、UE单元、UE站、移动站、移动台、远方站、远程终端设备、移动设备、UE终端设备、终端设备、无线通信设备、UE代理或UE装置等。终端也可以是固定终端或者移动终端。
第一网络与第二网络为制式不同的无线通信网络。第一网络包括但不限于：第二代(2G)通信网络、第三代(3G)通信网络、长期演进(long term evolution，LTE)网络(即4G网络)、第五代(5G)通信网络、LTE与5G混合架构网络、5G新无线(5G New Radio，5G NR)网络、以 及未来通信发展中出现的新通信网络等。结合图1c所示的流程，在本申请的以下实施例中，第一网络的一种示例为4G网络。
第二网络包括但不限于：第二代(2G)通信网络、第三代(3G)通信网络、LTE)网络、第五代(5G)通信网络、LTE与5G混合架构网络、5G新无线(5G New Radio，5G NR)网络、以及未来通信发展中出现的新通信网络等。结合图1c所示的流程，在本申请的以下实施例中，第二网络的一种示例为5G网络。
图1c所示的S102-S103所示的步骤，即通过EPS FB触发终端注册在第一网络，是一种具体实现方式，还可以基于其他实现方式实现终端在第一网络成功注册，例如，终端开机驻留并在第一网络注册成功。
图1c中所示的S105为4G网络触发重定向的一个示例，而不作为限定，另一种重定向的触发方式的示例为终端测量到4G网络的质量劣化(即基于测量的重定向)。
终端被触发从第一网络向第二网络进行切换的场景将在以下实施例(可参见图4)进行说明。
图2为本申请实施例提供的一种避免业务失败的方法的流程，应用在与图1c所示流程相同的场景下，为了便于理解，本申请的实施例中，将场景相关的步骤的示例(S201-S205)也一并进行说明。
图2中包括以下步骤：
S201、终端在5G网络注册成功。可参见S101。
S202、5G网络设备响应于通话业务，触发EPS FB。
S203、终端在4G网络注册成功。可参见S103。
S204、终端在4G网络响应被叫，执行通话业务。
S205、4G网络设备响应于通话结束，向终端发送无线资源控制RRC Release消息。
RRC Release消息携带5G网络中的小区的信息(如频点)。RRC Release消息会触发终端执行重定向到5G网络的流程，在该流程中，终端先判断RRC Release消息携带的5G小区的信息指示的小区是否满足S准则。本实施例中，假设判断结果为不满足，即S206。
S206、终端判定5G小区不满足S准则。
可以理解的是，终端判定5G小区不满足S准则，说明4G网络设备下发的5G小区均不满足重定向的条件(即终端向网络发起重定向流程的条件)，因此，终端不执行重定向的后续步骤，无法完成向5G网络的重定向则无法在5G网络中进行注册，因此S206可以理解为判定向5G网络注册失败(即终端未能成功注册到5G网络)的具体方式。所以手机仍然注册在4G网络。
S207、终端向4G网络设备发送跟踪区域更新(Tracking Area Update，TAU)请求消息。
S208、4G网络设备向终端发送TAU接受消息。
S209、终端向4G网络设备发送TAU完成消息。
结合S207-S209可知，终端向4G网络发起TAU流程，并与4G网络之间完成一次TAU流程，因为TAU流程的作用为向网络进行移动性注册，所以，能够使得4G网络再次感知终端注册在4G网络。
假设在S209之后，终端被呼叫，则触发以下步骤：
S210、4G网络响应于终端被叫，向终端下发寻呼。
寻呼的作用之一为触发终端与网络之间建立RRC连接，而终端与网络之间需要在RRC的连接态下，终端才能基于网络执行业务。可见向终端下发寻呼的目的为后续业务的执行奠定基础。
可以理解的是，S210-S211中均以通话业务为例，除了通话业务之外，终端与网络在RRC的连接态下，终端也能够基于网络实现数据业务，因此本实施例中所述的通话业务能够被替换为数据业务。
S211、终端基于4G网络执行通话业务。
从图2所示的流程可以看出，终端在判断4G网络下发的5G小区均不满足重定向条件后，向4G网络发起TAU流程，使得4G网络再次感知终端注册在4G网络，从而增加4G网络响应于终端被叫下发寻呼的可能性，降低被叫业务失败的可能性。
图3为本申请实施例公开的又一种避免业务失败的方法的流程，与图2所示流程的区别主要在于向5G网络注册失败的实现方式。
图3中包括以下步骤：
S301、终端在4G网络注册成功。
本实施例中不再限定终端在4G网络注册成功的触发方式(图2中以S202为例)。
图2中以4G网络响应于通话结束，触发终端发起重定向为例，本实施例中，以终端基于测量发起重定向为例。在一些实现方式中，终端周期性测量4G网络的信号质量，在4G网络的信号劣化的情况下，向5G网络发起重定向，在一些实现方式中，在4G网络的信号劣化的情况下，先向4G网络请求重定向并接收4G网络下发的指示重定向的消息(如RRC释放消息)，消息中携带4G网络下发的作为重定向的5G小区的信息(如频点)。终端发起重定向首先要测量5G小区是否满足S准则，本实施例以满足S准则即S302为例。
S302、终端判定5G小区满足S准则。
在一些实现方式中，5G小区的频点被预先配置在终端中。在另一些实现方式中，在终端判定4G网络的信号劣化后，从4G网络获得5G小区的频点。
可以理解的是，在判断多个5G小区是否满足S准则的情况下，至少一个5G小区满足S准则，则判定5G小区满足S准则。
S303、终端向5G网络设备发起重定向(即重定向流程)。
重定向可能成功，也可能失败，重定向成功后，终端才有可能向5G网络发起注册。
S304、终端判定注册失败(即为成功注册到5G网络)。
可以理解的是，注册失败可能是重定向流程失败，也可能是注册流程失败。
在一些实现方式中，在终端向5G网络发起重定向后的预设时长内，没有接收到5G网络发送的注册成功消息，则判定注册失败。
可以理解的是，注册失败意味着终端不能通过5G网络执行业务。结合图3所示的场景，终端只能通过4G网络执行业务。所以终端执行S305以提高业务成功执行的可能性。
S305、终端向4G网络设备发起TAU流程。
TAU流程的实现步骤可参见S207-S209。可以理解的是，终端通过向4G网络设备发送 TAU请求消息，发起TAU流程。
需要说明的是，S304和S305可以替换为：在终端向5G网络注册失败(未能成功注册到5G网络)的情况下，终端向4G网络设备发起TAU流程。
在一些实际网络的场景中，当UE重定向到NR时，会出现终端向5G网络注册失败的问题场景，如由于S准则失败，UE在检测完RRC REL消息中的频点之后发现频点都不满足S准则，因此可能发生被叫不通问题。在一些实施例中，通过识别这样的问题场景之后让UE主动向LTE网络设备发起一次TAU，这样终端在重定向到NR失败之后还能在LTE上完成注册，从而规避了现网当中存在的被叫不通兼容性问题。
S306、终端通过4G网络执行业务。
如前所述，终端被叫时，4G网络向终端发下寻呼，以触发终端基于4G网络执行通话业务。4G网络接收到向终端发送的数据时，4G网络向终端发下寻呼，以触发终端基于4G网络执行数据业务。
图3所示的流程以是否接收到注册成功消息为依据判断是否向5G网络注册成功，在注册不成功的情况下，终端向4G网络发起TAU(即移动性注册)使得4G网络感知终端注册在4G网络，以提高4G网络在终端有下行业务时能够向终端发下寻呼，从而降低终端业务失败的可能性。
如前所述，在某些场景下4G网络触发终端向5G网络切换。以下将重点说明切换场景下的避免业务失败的流程。
图4为本申请实施例公开的又一种避免业务失败的方法，重点说明切换场景下的流程，图4中包括以下步骤：
S401、终端在4G网络注册成功。
本实施例中不对终端在4G网络进行注册的触发步骤(即前序流程)进行限定。
本实施例中，以4G网络指示终端向5G网络进行切换的场景为例，并不对触发4G网络指示终端进行切换的触发条件进行限定。4G网络通过S402-S405指示终端向5G网络进行切换。
S402、4G网络设备向终端发送测量5G小区的消息。
在某些实现方式中，4G网络设备发送的消息携带待测量的5G小区的信息，如频点。
S403、终端测量5G小区，得到测量结果。
在一些实现方式中，终端测量4G网络设备下发的待测量的5G小区，在另一些实现方式中，终端测量本地已存储频点的5G小区。
S404、终端向4G网络设备发送测量结果。
S405、4G网络设备向终端发送基于测量结果获得的目标小区的信息。
将终端当前所在的小区称为源小区，目标小区可以理解为与源小区对应的，切换成功完成后终端所在的小区。也就是说，目标小区可以理解为终端从源小区将要切换至的5G小区。
在一些实现方式中，基于测量结果确认5G小区的质量的优劣，将质量较优的小区作为目标小区。
S406、终端向目标小区发起切换。
终端向目标小区发起切换的一种实现方式为：终端向目标小区发起随机接入流程。随机接入流程的目的为接入目标小区。
S407、终端判定随机接入目标小区失败(即未成功接入目标小区)。
切换成功的必要条件为终端随机接入目标小区成功，所以可以理解的是，终端随机接入目标小区失败，则无法在目标小区成功注册。所以终端仍然注册在4G网络。
可以理解的是，判定随机接入目标小区失败为判定在目标小区注册失败的一种实现方式，S407的一种可替换步骤为：终端判定在目标小区进行的注册流程失败。可以理解的是，在随机接入流程成功后，终端会向目标小区发起注册流程，如果注册流程失败，如终端在预设时长内没有接收到注册成功的消息，则终端判定注册失败。
S408、终端向4G网络设备发起移动性注册。
针对4G网络，移动性注册的实现方式即TUA流程，也就是说，终端通过TAU流程实现向4G网络进行注册。
S409、4G网络设备响应于终端被叫或接收到所述终端的下行数据，下发寻呼。
S410、终端基于4G网络执行业务。
从图4所示的流程可以看出，在从第一网络(如4G网络)向第二网络(如5G网络)切换的场景下，终端通过随机接入目标小区的失败，判定在5G网络注册失败，因此向4G网络发起移动性注册，以使得4G网络再次感知到终端注册到4G网络，避免终端有下行业务的情况下4G网络不向终端下发寻呼，从而避免业务失败的问题。
图5为本申请实施例提供的又一种避免业务失败的方法，与上述实施例的区别在于：应用于从5G网络重定向或切换至4G网络的场景。
图5中包括以下步骤：
S501、终端在5G网络注册成功。
终端可以在多种场景下在5G网络进行注册，例如，手机开机驻留在5G网络并在5G网络注册成功。这里不对终端在5G网络进行注册的场景进行限定。
S502、5G网络设备向终端发送重定向或注册至4G网络的消息。
这里不对触发5G网络设备向终端发送重定向或注册至4G网络的消息的场景做限定。一种触发场景的示例为5G网络不支持语音业务，且终端发起主叫或被叫，在此场景示例下，重定向或注册至4G网络的消息为EPS FB消息。可以理解的是，重定向或注册至4G网络的消息携带4G网络的小区的信息(如频点)。
S503、终端判定向4G网络注册失败。
针对重定向的场景，在一些实现方式中，终端判定4G小区不满足S准则，不向4G网络的小区发起重定向。在另一些实现方式中，终端判定4G小区满足S准则，向4G网络的小区发起重定向，重定向有可能失败也有可能失败，重定向成功后才有向4G网络的小区发起注册流程的可能性。重定向失败或注册流程失败均会被判定为注册失败。
针对切换场景，在一些实现方式中，终端基于切换至4G网络的消息携带的4G网络的小区的信息，向4G网络的小区进行随机接入流程，随机接入不成功，则终端判定向4G小区注册失败。在另一些实现方式中，随机接入4G网络成功，但向4G网络的注册流程失败，则终 端判定向4G小区注册失败。
终端向4G网络注册失败后，仍然注册在5G网络中。
S504、终端向5G网络设备进行移动性注册。
移动性注册的作用为在5G网络中进行注册。可以理解的是，在终端已经在5G网络注册成功的情况下，移动性注册能够实现再次注册的目的，从而使得5G网络再次感知终端注册在5G网络中。
S505、5G网络设备响应于终端被叫或接收到终端的下行数据，向终端下发寻呼。
S506、终端基于5G网络执行业务。
结合图5以及图2-图4所示的流程可以看出，本申请实施例提供的避免业务失败的方法，无论终端注册在4G网络或5G网络，在向其它网络注册失败的情况下，可以再向当前注册的网络再进行一次注册，以使得当前注册的网络在终端能够及时下发寻呼，保证业务的正常执行。
图6为上述实施例所述的终端的结构示例图。终端300可以包括处理器310，外部存储器接口320，内部存储器321，显示屏330，摄像头340，天线1，天线2，移动通信模块350，无线通信模块360以及音频模块370等。
可以理解的是，本实施例示意的结构并不构成对该终端的具体限定。在另一些实施例中，该终端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310可以包括一个或多个处理单元，例如：处理器310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，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。
可以理解的是，本实施例示意的各模块间的接口连接关系，只是示意性说明，并不构成对终端300的结构限定。在本申请另一些实施例中，终端300也可以采用上述实施例中不同的接口连接方式，或多种接口连接方式的组合。
终端的无线通信功能可以通过天线1，天线2，移动通信模块350，无线通信模块360，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350可以提供应用在终端上的包括2G/3G/4G/5G等无线通信的解决方案。移动通信模块350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350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350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 350的至少部分功能模块可以被设置于处理器310中。在一些实施例中，移动通信模块350的至少部分功能模块可以与处理器310的至少部分模块被设置在同一个器件中。一些实施例中，终端通过移动通信模块350和天线1发起或接收呼叫请求。
无线通信模块360可以提供应用在终端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360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360经由天线3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310。无线通信模块360还可以从处理器310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。

Claims (32)

  1. 一种避免业务失败的方法，其特征在于，所述方法包括：
    所述终端向第一网络发起注册并成功注册到所述第一网络；
    所述终端接收所述第一网络发送的第一消息，所述第一消息用于指示所述终端从所述第一网络重定向或切换到第二网络，所述第一消息里携带了所述第二网络的小区的信息；
    当所述终端接收到所述第一消息后，未能成功注册到所述第二网络的小区的情况下，所述终端向所述第一网络发起移动性注册。
  2. 根据权利要求1所述的方法，其特征在于，在所述向所述第一网络发起移动性注册之后，还包括：
    在所述终端与所述第一网络之间完成所述移动性注册后，所述终端接收寻呼，所述寻呼由所述第一网络在所述终端被叫或接收到所述终端的下行数据的情况下发送；
    所述终端基于所述第一网络执行通话或数据业务。
  3. 根据权利要求2所述的方法，其特征在于，所述向所述第一网络发起移动性注册，包括：向所述第一网络发起跟踪区域更新TAU流程；
    所述完成所述移动性注册，包括：完成所述TAU流程。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述未能成功注册到所述第二网络的小区，包括：
    所述第二网络的小区不满足所述终端发起重定向流程的条件。
  5. 根据权利要求1-3任一项所述的方法，其特征在于，所述未能成功注册到所述第二网络的小区，包括：
    当所述第二网络的小区满足所述终端发起重定向流程的条件的情况下，所述终端向所述第二网络的小区发起重定向流程；
    所述重定向流程失败。
  6. 根据权利要求1-3任一项所述的方法，其特征在于，所述未能成功注册到所述第二网络的小区，包括：
    当所述第二网络的小区满足所述终端发起重定向流程的条件的情况下，所述终端向所述第二网络的小区发起重定向流程；
    所述终端在所述重定向流程之后，向所述第二网络的小区发起注册流程；
    所述注册流程失败。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述第一消息包括：
    无线资源控制释放RRC Release消息。
  8. 根据权利要求4-7任一项所述的方法，其特征在于，所述终端发起重定向流程的条件，包括：
    S准则。
  9. 根据权利要求1-3任一项所述的方法，其特征在于，所述未能成功注册到所述第二网络的小区，包括：
    所述终端基于所述第二网络的小区的信息，向所述第二网络的小区发起随机接入流程；
    所述随机接入流程失败。
  10. 根据权利要求1-3任一项所述的方法，其特征在于，所述未能成功注册到所述第二网络的小区，包括：
    所述终端基于所述第二网络的小区的信息，向所述第二网络的小区发起随机接入流程；
    所述终端在所述随机接入流程之后，向所述第二网络的小区发起注册流程；
    所述注册流程失败。
  11. 根据权利要求9或10所述的方法，其特征在于，在所述接收所述第一网络发送的第一消息之前，还包括：
    接收所述第一网络发送的测量消息，所述测量消息指示对所述第二网络的小区进行测量；
    向所述第一网络上报对所述第二网络的小区进行测量的测量结果。
  12. 根据权利要求11所述的方法，其特征在于，所述第一消息包括：
    所述第一网络发送的切换消息，所述切换消息携带的所述第二网络的小区的信息为基于所述测量结果选择的小区的信息。
  13. 一种避免业务失败的方法，其特征在于，应用于第一网络的网络设备，所述方法包括：
    向已成功注册在所述第一网络的终端发送第一消息，所述第一消息用于指示所述终端从所述第一网络重定向或切换到第二网络，所述第一消息里携带了所述第二网络的小区的信息；
    接收所述终端在接收到所述第一消息后，未能成功注册到所述第二网络的小区的情况下发送的移动性注册消息。
  14. 根据权利要求13所述的方法，其特征在于，在所述向已成功注册在所述第一网络的终端发送第一消息之前，还包括：
    响应于所述终端发送的注册消息，向所述终端发送注册成功消息。
  15. 根据权利要求13或14所述的方法，其特征在于，在所述接收所述终端发送的移动性注册消息之后，还包括：
    在所述网络设备与所述终端之间完成所述移动性注册后，所述网络设备在所述终端被叫或接收到所述终端的下行数据的情况下向所述终端发送寻呼。
  16. 一种电子设备，其特征在于，包括：
    存储器以及至少一个处理器；所述存储器用于存储应用程序，所述至少一个处理器用于执行所述应用程序，以实现权利要求1-12任一项所述的避免业务失败的方法。
  17. 一种网络设备，其特征在于，包括：
    存储器以及至少一个处理器；所述存储器用于存储应用程序，所述至少一个处理器用于执行所述应用程序，以使得所述网络设备实现权利要求13-15任一项所述的避免业务失败的方法。
  18. 一种芯片，其特征在于，当所述芯片被部署在终端内部时，所述芯片用于控制所述终端实现如权利要求1-12任一所述的方法。
  19. 一种避免业务失败的方法，其特征在于，应用于终端，所述方法包括：
    在所述终端被触发从第一网络向第二网络重定向或切换后，判定向所述第二网络注册失败；
    向所述第一网络进行移动性注册。
  20. 根据权利要求19所述的方法，其特征在于，在所述被触发从第一网络向第二网络重定向或切换之前，还包括：
    在所述第一网络注册成功。
  21. 根据权利要求19或20所述的方法，其特征在于，所述判定向所述第二网络注册失败，包括：
    基于重定向消息携带的所述第二网络的小区的信息，判定所述第二网络的小区不满足所述终端发起重定向流程的条件。
  22. 根据权利要求19或20所述的方法，其特征在于，所述判定向所述第二网络注册失败，包括：
    判定重定向消息指示的所述第二网络的小区满足发起重定向的条件；
    向所述第二网络的小区发起重定向流程；
    判定所述重定向流程失败。
  23. 根据权利要求19或20所述的方法，其特征在于，所述判定向所述第二网络注册失败，包括：
    判定重定向消息指示的所述第二网络的小区满足发起重定向的条件；
    向所述第二网络的小区发起重定向流程；
    在所述重定向流程之后，向所述第二网络的小区发起注册流程；
    判定所述注册流程失败。
  24. 根据权利要求20-21任一项所述的方法，其特征在于，所述终端被触发从第一网络向第二网络重定向，包括：
    接收重定向消息，所述重定向消息携带所述第二网络的小区的信息。
  25. 根据权利要求19或20所述的方法，其特征在于，所述判定向所述第二网络注册失败，包括：
    基于切换消息指示的所述第二网络的目标小区，向所述目标小区进行随机接入流程；
    判定所述随机接入流程失败。
  26. 根据权利要求19或20所述的方法，其特征在于，所述判定向所述第二网络注册失败，包括：
    基于切换消息指示的所述第二网络的目标小区，向所述目标小区进行随机接入流程；
    在所述随机接入流程之后，向所述第二网络的小区发起注册流程；
    判定所述注册流程失败。
  27. 根据权利要求25或26所述的方法，其特征在于，所述终端被触发从第一网络向第二网络切换，包括：
    接收测量消息，所述测量消息指示对所述第二网络的小区进行测量；
    上报对所述第二网络的小区进行测量的测量结果；
    接收所述切换消息，所述切换消息携带基于所述测量结果选择的所述目标小区的信息。
  28. 根据权利要求19-27任一项所述的方法，其特征在于，所述向所述第一网络进行移动性注册，包括：
    向所述第一网络的设备发起跟踪区域更新TAU流程。
  29. 一种避免业务失败的方法，其特征在于，应用于第一网络的网络设备，所述方法包括：
    在触发终端从所述第一网络向第二网络重定向或切换后，接收所述终端发送的移动性注册消息。
  30. 根据权利要求29所述的方法，其特征在于，在所述触发终端从第一网络向第二网络重定向或切换之前，还包括：
    响应于所述终端发送的注册消息，向所述终端发送注册成功消息。
  31. 一种电子设备，其特征在于，包括：
    存储器以及至少一个处理器；所述存储器用于存储应用程序，所述至少一个处理器用于执行所述应用程序，以实现权利要求19-30任一项所述的避免业务失败的方法。
  32. 一种芯片，其特征在于，当所述芯片被部署在终端内部时，所述芯片用于控制所述终端实现如权利要求19-30任一所述的方法。
PCT/CN2023/073298 2022-11-23 2023-01-20 用于避免业务失败的方法及装置 WO2024108760A1 (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9681411B1 (en) * 2014-10-31 2017-06-13 Sprint Spectrum L.P. Multiple-network registration process
CN113613294A (zh) * 2021-07-28 2021-11-05 西安广和通无线软件有限公司 网络接入方法、装置、终端设备及存储介质
CN115086977A (zh) * 2021-03-10 2022-09-20 深圳市万普拉斯科技有限公司 网络注册方法、装置、移动终端及基站

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9681411B1 (en) * 2014-10-31 2017-06-13 Sprint Spectrum L.P. Multiple-network registration process
CN115086977A (zh) * 2021-03-10 2022-09-20 深圳市万普拉斯科技有限公司 网络注册方法、装置、移动终端及基站
CN113613294A (zh) * 2021-07-28 2021-11-05 西安广和通无线软件有限公司 网络接入方法、装置、终端设备及存储介质

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