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WO2024045693A9 - 基于异网漫游的接入方法和装置 - Google Patents

基于异网漫游的接入方法和装置 Download PDF

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Publication number
WO2024045693A9
WO2024045693A9 PCT/CN2023/094259 CN2023094259W WO2024045693A9 WO 2024045693 A9 WO2024045693 A9 WO 2024045693A9 CN 2023094259 W CN2023094259 W CN 2023094259W WO 2024045693 A9 WO2024045693 A9 WO 2024045693A9
Authority
WO
WIPO (PCT)
Prior art keywords
network
terminal device
roaming
indication information
device supports
Prior art date
Application number
PCT/CN2023/094259
Other languages
English (en)
French (fr)
Other versions
WO2024045693A1 (zh
Inventor
张健
Original Assignee
荣耀终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 荣耀终端有限公司 filed Critical 荣耀终端有限公司
Publication of WO2024045693A1 publication Critical patent/WO2024045693A1/zh
Publication of WO2024045693A9 publication Critical patent/WO2024045693A9/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support

Definitions

  • the present application relates to the field of communication technology, and in particular to an access method and device based on cross-network roaming.
  • Inter-network roaming is a service that enables a terminal device of a given public land mobile network (PLMN) to obtain services from another PLMN anywhere or in the same country.
  • PLMN public land mobile network
  • 4G 4th generation mobile communication technology
  • 5G 5th generation mobile communication technology
  • the home network and the visited network belong to different operators.
  • the above-mentioned visited network only has 5G signals but no 4G signals, and there are some terminal devices that do not support voice over new radio (VoNR).
  • VoNR voice over new radio
  • the embodiments of the present application provide an access method and device based on heterogeneous network roaming, which are conducive to ensuring voice calls of terminal devices in heterogeneous network roaming scenarios, thereby improving user experience.
  • an access method based on cross-network roaming comprising: a terminal device determines first indication information or second indication information, the first indication information is used to indicate whether the terminal device supports new wireless voice service VoNR, and the second indication information is used to indicate whether the terminal device supports cross-network roaming; the terminal device sends core network capability information to a core network device, the core network capability information includes the first indication information or the second indication information.
  • terminal equipment supporting VoNR is a necessary condition for the terminal equipment to support roaming on different networks.
  • terminal equipment supporting VoNR does not necessarily support roaming on different networks, but terminal equipment supporting roaming on different networks must support VoNR.
  • the core network capability information is first sent by the terminal device to the access network device, and then sent by the access network device to the core network device, that is, the core network capability information is transparently transmitted from the access network device to the core network device.
  • the core network capability information can be sent via non-access stratum (NAS) signaling.
  • NAS non-access stratum
  • the terminal device sends core network capability information to the core network device.
  • the terminal device When the terminal device supports roaming in different networks, the terminal device will receive the EPLMN list sent by the core network device. If the terminal device does not support roaming in different networks, the terminal device will not receive the EPLMN list sent by the core network device, and the terminal device will still reside in the home network. In this way, for terminal devices that do not support VoNR or roaming in different networks, if there is a 4G signal in the home network, the terminal device can continue to use the 4G signal under the home network for voice calls.
  • the terminal device can roam to the visited network and use the 5G signal under the visited network for voice calls, so as to obtain a higher quality and higher speed voice service experience. Therefore, the access method based on roaming in different networks in the embodiment of the present application is conducive to ensuring the voice calls of terminal devices in the roaming scenario of different networks, thereby improving the user experience.
  • the first indication information or the second indication information is an idle bit in the core network capability information.
  • the idle bit in the core network capability information when the idle bit in the core network capability information is a first value, the first indication information indicates that the terminal device supports VoNR, or the second indication information indicates that the terminal device supports roaming on a different network; when the idle bit in the core network capability information is a second value, the first indication information indicates that the terminal device does not support VoNR, or the second indication information indicates that the terminal device does not support roaming on a different network.
  • the above idle bit can be 1 bit, the first value is 1, the second value is 0, or the first value is 0, and the second value is 1, which is not limited in the embodiments of the present application.
  • the core network capability information includes the second indication information; the terminal device determines the second indication information, including: the terminal device determines whether the terminal device supports roaming on an alternative network based on at least one of the following information: whether the terminal device supports VoNR; whether the terminal device supports the frequency band for carrying roaming on an alternative network; whether the terminal device supports slice mapping between a visited network and a home network after roaming on an alternative network; whether the terminal device supports a fast emergency call strategy for a visited network after roaming on an alternative network; and whether the home network of the terminal device is a preset network.
  • the terminal device receives an equivalent public land mobile network EPLMN list from the core network device.
  • the terminal device can search for PLMN networks in the EPLMN list, thereby roaming to a visited network.
  • the method also includes: when the terminal device supports roaming on a different network, the terminal device starts searching for the roaming frequency band of the different network, and/or accesses a visited network corresponding to a network identifier included in the EPLMN list; or, when the terminal device does not support roaming on a different network, the terminal device turns off searching for the roaming frequency band of the different network, and/or prohibits access to a visited network corresponding to a network identifier included in the EPLMN list.
  • the terminal device when the terminal device does not support roaming on a different network, the terminal device turns off the search for the roaming frequency band of the different network, and/or prohibits access to the visited network corresponding to the network identifier included in the EPLMN list, thereby ensuring that the terminal device does not roam to the visited network and saving energy consumption of the terminal device.
  • another access method based on cross-network roaming comprising: a core network device receiving core network capability information from a terminal device, the core network capability information comprising first indication information or second indication information, the first indication information being used to indicate whether the terminal device supports new wireless voice service VoNR, and the second indication information being used to indicate whether the terminal device supports cross-network roaming; the core network device determining whether the terminal device supports cross-network roaming based on the core network capability information; and if the terminal device supports cross-network roaming, the The core network device sends an equivalent public land mobile network EPLMN list to the terminal device.
  • the core network device can make a judgment based on the first indication information and other information.
  • the core network device can directly judge whether the terminal device supports roaming on different networks based on the second indication information.
  • the core network capability information includes the first indication information; the core network device determines whether the terminal device supports roaming on an alternative network based on the core network capability information, including: the core network device determines whether the terminal device supports roaming on an alternative network based on the first indication information and at least one of the following information: whether the terminal device supports a frequency band for roaming on an alternative network; whether the terminal device supports slice mapping between a visited network and a home network after roaming on an alternative network; whether the terminal device supports a fast emergency call strategy for a visited network after roaming on an alternative network; and whether the home network of the terminal device is a preset network.
  • an access method based on roaming on different networks comprising: an access network device receives a wireless capability query request from a core network device, the wireless capability query request is used to request to query the wireless capability of a terminal device; the access network device sends a wireless capability query response to the core network device based on the wireless capability query request, the wireless capability query response comprises a first indication information or a second indication information, the first indication information is used to indicate whether the terminal device supports a new wireless voice service VoNR, and the second indication information is used to indicate whether the terminal device supports roaming on different networks.
  • the access network device parses the wireless capability information of the terminal device, obtains the above-mentioned first indication information or second indication information, and sends a wireless capability query response to the core network device.
  • the method before the access network device sends a wireless capability query response to the core network device based on the wireless capability query request, the method also includes: the access network device receives wireless capability information from the terminal device, and the wireless capability information includes the first indication information or the second indication information.
  • the wireless capability information includes the first indication information
  • the wireless capability query response includes the second indication information
  • the method also includes: the access network device determines the second indication information based on the first indication information and at least one of the following information: whether the terminal device supports the frequency band for carrying inter-network roaming; whether the terminal device supports slice mapping between the visited network and the home network after inter-network roaming; whether the terminal device supports the fast emergency call strategy of the visited network after inter-network roaming; whether the home network of the terminal device is a preset network.
  • the capability information of the terminal device includes wireless capability information and core network capability information, wherein the wireless capability information can be reported through radio resource control (RRC) signaling, and the core network capability information can be reported through NAS signaling.
  • the wireless capability information includes information indicating whether the terminal device supports VoNR or whether it supports roaming on different networks, but the core network device cannot parse it and needs to send a wireless capability query request to the access network device.
  • the terminal device receives the EPLMN list from the core network device, and the terminal device can search for the PLMN network in the EPLMN list, thereby roaming to the visited network.
  • the wireless capability query response includes the first indication information; the core network device determines whether the terminal device supports roaming on a different network based on the wireless capability query response, including: the core network device determines whether the terminal device supports roaming on a different network based on the first indication information and at least one of the following information: whether the terminal device supports a frequency band for roaming on a different network; whether the terminal device supports slice mapping between a visited network and a home network after roaming on a different network; whether the terminal device supports a fast emergency call strategy for a visited network after roaming on a different network; and whether the home network of the terminal device is a preset network.
  • an access device based on roaming in a different network is provided, which is used to execute the method in any possible implementation of the above various aspects.
  • the access device includes a module for executing the method in any possible implementation of the above various aspects.
  • the access device may include a module that executes the methods/operations/steps/actions described in each of the above aspects.
  • the module may be a hardware circuit, software, or a combination of hardware circuit and software.
  • the access device is a communication chip, which may include an input circuit or interface for sending messages or data, and an output circuit or interface for receiving messages or data.
  • the access device may be a communication device, which may include a transmitter for sending messages or data, and a receiver for receiving messages or data.
  • another access device based on roaming in a different network comprising a processor and a memory.
  • the processor is used to read instructions stored in the memory, and can receive signals through a receiver and transmit signals through a transmitter to execute a method in any possible implementation of the above aspects.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor.
  • the memory can be a non-transitory memory, such as a read-only memory (ROM), which can be integrated with the processor on the same chip or can be separately set on different chips.
  • ROM read-only memory
  • the embodiments of the present application do not limit the type of memory and the setting method of the memory and the processor.
  • the relevant data interaction process can be a process of outputting indication information from a processor
  • receiving capability information can be a process of receiving input capability information from a processor.
  • the processed output data can be output to a transmitter, and the input data received by the processor can come from a receiver.
  • the transmitter and the receiver can be collectively referred to as a transceiver.
  • the access device in the sixth aspect may be a chip, and the processor may be implemented by hardware or software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when When implemented by software, the processor may be a general-purpose processor, which is implemented by reading software codes stored in a memory.
  • the memory may be integrated in the processor or located outside the processor and exist independently.
  • a communication system comprising an apparatus for implementing the first aspect or any possible method of the first aspect, and an apparatus for implementing the second aspect or any possible method of the second aspect.
  • another communication system comprising an apparatus for implementing the third aspect or any possible implementation method of the third aspect, and an apparatus for implementing the fourth aspect or any possible implementation method of the fourth aspect.
  • a computer-readable storage medium which stores a computer program (also referred to as code or instruction), which, when executed on a computer, enables the computer to execute a method in any possible implementation of the above-mentioned aspects.
  • a computer program product which includes: a computer program (also referred to as code, or instruction), which, when executed, enables a computer to execute a method in any possible implementation of the above-mentioned aspects.
  • a computer program also referred to as code, or instruction
  • FIG1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG2 is a schematic flow chart of an access method based on roaming in a different network provided in an embodiment of the present application
  • FIG. 3 is a schematic flow chart of a method for determining whether a terminal device supports cross-network roaming provided in an embodiment of the present application
  • FIG4 is a schematic flow chart of another access method based on roaming in a different network provided in an embodiment of the present application.
  • FIG5 is a schematic block diagram of an access device based on cross-network roaming provided in an embodiment of the present application
  • FIG6 is a schematic block diagram of another access device based on cross-network roaming provided in an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of another access device based on cross-network roaming provided in an embodiment of the present application.
  • words such as “first” and “second” are used to distinguish the same or similar items with substantially the same functions and effects.
  • the first chip and the second chip are only used to distinguish different chips, and their order is not limited.
  • words such as “first” and “second” do not limit the quantity and execution order, and words such as “first” and “second” do not necessarily limit them to be different.
  • At least one means one or more, and “more” means two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that three relationships may exist.
  • a and/or B can mean: 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 associated objects before and after are in an "or” relationship.
  • “At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of single items or plural items.
  • at least one item of a, b, or c can be represented by: a, b, c, ab, a--c, bc, or abc, where a, b, c can be single or plural.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS universal mobile telecommunication system
  • 5G fifth generation
  • NR new radio
  • the terminal device in the embodiments of the present application may also be referred to as: user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • access terminal user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.
  • a terminal device can be a device that provides voice/data connectivity to users, such as a handheld device with wireless connection function, a vehicle-mounted device, etc.
  • terminals are: mobile phones, tablet computers, laptops, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • handheld devices with wireless communication functions computing devices or other processing devices connected to wireless modems
  • vehicle-mounted devices wearable devices
  • terminal devices in 5G networks or terminal devices in future evolved public land mobile networks (PLMN) etc.
  • the terminal device may also be a wearable device.
  • Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.
  • the terminal device can also be a terminal device in the Internet of Things (IoT) system.
  • IoT Internet of Things
  • Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network that interconnects people and machines and things.
  • the access network device in the embodiment of the present application may be a device for communicating with a terminal device, and the access network device may also be referred to as a wireless access network device, and may be a transmission reception point (TRP), or an evolved NodeB (eNB or eNodeB) in an LTE system.
  • TRP transmission reception point
  • eNB evolved NodeB
  • It can be a home base station (for example, home evolved NodeB, or home Node B, HNB), a base band unit (base band unit, BBU), or a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or the access network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a 5G network, or a network device in a future evolved PLMN network, etc. It can be an access point (access point, AP) in a WLAN, it can be a gNB in a new radio (new radio, NR) system, it can be a satellite base station in a satellite communication system, etc., and the embodiments of the present application are not limited.
  • the access network equipment may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node, or a RAN device including a control plane CU node (CU-CP node) and a user plane CU node (CU-UP node) and a DU node.
  • CU centralized unit
  • DU distributed unit
  • RAN device including a CU node and a DU node
  • CU-CP node control plane CU node
  • CU-UP node user plane CU node
  • the access network equipment provides services for the cell.
  • the terminal equipment communicates with the cell through the transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the access network equipment.
  • the cell can belong to a macro base station (for example, macro eNB or macro gNB, etc.) or a base station corresponding to a small cell.
  • the small cells here may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • the core network device of the embodiment of the present application can be a core network element in a 4G network, such as a mobile management entity (MME), a serving gateway (sGW), etc., or a core network element in a 5G network, such as an access and mobility management function (AMF) element, a user plane function (UPF) element, etc. It can also be a core network element with other names, which is not limited by the embodiment of the present application.
  • MME mobile management entity
  • sGW serving gateway
  • AMF access and mobility management function
  • UPF user plane function
  • the access network equipment and core network equipment in the embodiments of the present application may be collectively referred to as network equipment.
  • the terminal device, the access network device and the core network device include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU) and a memory (also called main memory).
  • the operating system can be any one or more computer operating systems that implement business processing through processes, such as Linux operating system, Unix operating system, Android operating system, iOS operating system or windows operating system.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application.
  • the execution subject of the method provided in the embodiment of the present application can be one of the terminal device, the access network device and the core network device, or a functional module in the above-mentioned device that can call and execute the program.
  • a computer-readable medium may include, but is not limited to: a magnetic storage device (e.g., a hard disk, a floppy disk, or a magnetic tape, etc.), an optical disk (e.g., a compact disc (CD), a digital versatile disc (DVD), etc.), a smart card, and a flash memory device (e.g., an erasable programmable read-only memory (EPROM), a card, a stick, or a key drive, etc.).
  • a magnetic storage device e.g., a hard disk, a floppy disk, or a magnetic tape, etc.
  • an optical disk e.g., a compact disc (CD), a digital versatile disc (DVD), etc.
  • a smart card e.g., an erasable programmable read-only memory (EPROM), a card, a stick, or a key drive, etc.
  • EPROM erasable programmable read-only memory
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing and/or carrying instructions and/or data.
  • FIG. 1 To facilitate understanding of the embodiments of the present application, a communication system applicable to the embodiments of the present application is first described in detail in conjunction with FIG. 1 .
  • Fig. 1 is a schematic diagram of a communication system 100 provided in an embodiment of the present application, and the communication system 100 may include a terminal device 101, an access network device 102, and a core network device 103.
  • the terminal device 101 is connected to the access network device 102 in a wireless manner, and the access network device 102 may be connected to the core network device 103 in a wireless or wired manner.
  • Figure 1 is only a schematic diagram, and the communication system 100 may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in Figure 1.
  • the embodiment of the present application does not limit the number of core network devices, access network devices, and terminal devices included in the communication system 100.
  • Inter-network roaming is a service that enables a terminal device of a given public land mobile network (PLMN) to obtain services from another PLMN anywhere or in the same country.
  • PLMN public land mobile network
  • 4G 4th generation mobile communication technology
  • 5G 5th generation mobile communication technology
  • the above-mentioned visited network only has 5G signals but no 4G signals, and there are some terminal devices that do not support voice over new radio (VoNR).
  • VoNR voice over new radio
  • an embodiment of the present application proposes an access method based on heterogeneous network roaming, which is conducive to ensuring voice calls of terminal devices in heterogeneous network roaming scenarios, thereby improving user experience.
  • PLMN Public land mobile network
  • EPLMN Equivalent Public Land Mobile Network
  • It is a PLMN that is on the same level as the PLMN currently selected by the terminal device.
  • EPLMN mainly solves the user residence and roaming strategy between the shared network and the original network. Operators can configure EPLMN, and communication network resources can be shared between these networks. From a business perspective, it enables communication network resources to be shared between network resources of different operators, or between different PLMNs defined by the same operator.
  • the home network and the visited network will send EPLMN to each other.
  • the PLMN of the home network of the terminal device is PLMN1
  • the PLMN of the visited network is PLMN2.
  • the visited network and the home network will send each other's network PLMN as EPLMN.
  • the terminal device will roam to the 5G network of EPLMN (i.e. PLMN2) and reside there.
  • VoNR Voice over new radio
  • Terminal devices that support VoNR can make voice calls directly based on the NR network without falling back to the 4G network, thereby obtaining higher quality voice service experience and higher-speed data service experience.
  • terminal equipment can be replaced by a device or chip that can implement functions similar to those of the terminal equipment
  • the access network equipment can also be replaced by a device or chip that can implement functions similar to those of the access network equipment
  • core network equipment can also be replaced by a device or chip that can implement functions similar to those of the core network equipment.
  • the embodiments of the present application do not limit their names.
  • FIG2 is a schematic flow chart of an access method 200 based on roaming in a different network provided in an embodiment of the present application.
  • the method can be applied to the above communication system 100.
  • the method 200 includes the following steps:
  • the terminal device determines first indication information or second indication information, the first indication information is used to indicate whether the terminal device supports the new wireless voice service VoNR, and the second indication information is used to indicate whether the terminal device supports cross-network roaming.
  • terminal equipment supporting VoNR is a necessary condition for the terminal equipment to support roaming on different networks.
  • terminal equipment supporting VoNR does not necessarily support roaming on different networks, but terminal equipment supporting roaming on different networks must support VoNR.
  • the terminal device sends core network capability information to the core network device, where the core network capability information includes the first indication information or the second indication information.
  • the core network device receives the core network capability information from the terminal device.
  • the core network capability information is first sent by the terminal device to the access network device, and then sent by the access network device to the core network device, that is, the core network capability information is transparently transmitted by the access network device to the core network device.
  • the core network capability information can be sent via non-access stratum (NAS) signaling.
  • NAS non-access stratum
  • the core network device determines whether the terminal device supports roaming on different networks based on the core network capability information.
  • the core network device can make a judgment based on the first indication information and other information.
  • the core network device can directly judge whether the terminal device supports roaming on different networks based on the second indication information.
  • the core network device when the terminal device supports roaming on different networks, the core network device sends an EPLMN list to the terminal device; correspondingly, the terminal device receives the EPLMN list from the core network device.
  • the terminal device can search for PLMN networks in the EPLMN list, thereby roaming to a visited network.
  • the core network device will send the EPLMN list to the terminal device only if the terminal device supports roaming on a different network. If the terminal device does not support roaming on a different network, the core network device will not send the EPLMN list to the terminal device, and the terminal device will still reside in the home network. In this way, for terminal devices that do not support VoNR or roaming on a different network, if there is a 4G signal in the home network, the terminal device can continue to use the 4G signal under the home network for voice calls. For terminal devices that support roaming on a different network, the terminal device can roam to the visited network and use the 5G signal under the visited network for voice calls, obtaining higher quality and higher speed. Therefore, the access method based on roaming in different networks in the embodiment of the present application is conducive to ensuring the voice call of the terminal device in the roaming scenario of different networks, thereby improving the user experience.
  • the core network capability information includes the first indication information.
  • the core network device determines whether the terminal device supports roaming on different networks based on the core network capability information, including: the core network device determines whether the terminal device supports roaming on different networks according to at least one of the following information:
  • the core network device can determine whether the terminal device supports roaming on different networks only based on (1) in the above information.
  • the terminal device supports VoNR, the terminal device supports roaming on different networks; when the terminal device does not support VoNR, the terminal device does not support roaming on different networks.
  • the core network device can determine whether the terminal device supports roaming on different networks based on (1) and (2) in the above information.
  • the terminal device supports VoNR and supports the frequency band that carries roaming on different networks
  • the terminal device supports roaming on different networks
  • the terminal device does not support VoNR and/or does not support the frequency band that carries roaming on different networks
  • the above-mentioned frequency band for carrying inter-network roaming can be the 700M n28 frequency band, which is determined by the current network deployment.
  • the terminal device will report the frequency band it supports to the core network device (for example, through reporting the core network capability information) so that the core network device can make a judgment.
  • the core network device can determine whether the terminal device supports cross-network roaming based on (1), (2) and (3) in the above information.
  • the terminal device supports VoNR, supports the frequency band that carries cross-network roaming, and supports slice mapping between the visited network and the home network after cross-network roaming, the terminal device supports cross-network roaming; when the terminal device does not support any of (1), (2) and (3), the terminal device does not support cross-network roaming.
  • the core network device can determine whether the terminal device supports cross-network roaming based on (1), (2) and (5) in the above information.
  • the terminal device supports VoNR, supports the frequency band that carries cross-network roaming, and the home network of the terminal device is not a preset network, the terminal device supports cross-network roaming; when the terminal device does not support (1) and/or (2), or the home network of the terminal device is a preset network, the terminal device does not support cross-network roaming.
  • the preset network here can be represented by a specific operator. Under the specific operator, even if the home network is a 4G signal, since the coverage, network speed and call continuity of the 4G signal of the specific operator in the home network are better than the 5G signal of the visited network, there is no need for the terminal device to roam to the visited network.
  • the core network device can determine whether the terminal device supports cross-network roaming based on (1) to (4) in the above information.
  • the terminal device supports VoNR, supports the frequency band that carries cross-network roaming, supports slice mapping between the visited network and the home network after cross-network roaming, and supports the fast emergency call strategy of the visited network after cross-network roaming, the terminal device supports cross-network roaming; when the terminal device does not support any of (1) to (4), the terminal device does not support cross-network roaming.
  • fast emergency call strategy can specifically be a process of directly making a normal call in the visited network. Make an emergency call.
  • the core network device can determine whether the terminal device supports roaming on different networks based on (1) to (5) in the above information.
  • the terminal device supports VoNR, supports the frequency band that carries roaming on different networks, supports slice mapping between the visited network and the home network after roaming on different networks, supports the fast emergency call strategy of the visited network after roaming on different networks, and the home network of the terminal device is not a preset network, the terminal device supports roaming on different networks; when the terminal device does not support any of (1) to (5), or the home network of the terminal device is a preset network, the terminal device does not support roaming on different networks.
  • information (1) to (5) can be arbitrarily combined, and the core network device makes a judgment based on the combined information.
  • the above examples only illustrate some possible situations. Other situations are similar and are not listed here one by one.
  • the core network capability information includes the second indication information.
  • the terminal device determines the second indication information, including:
  • the terminal device determines whether the terminal device supports cross-network roaming based on at least one of the following information:
  • the method by which a terminal device determines whether the terminal device supports roaming on different networks is the same as the method by which a core network device determines whether the terminal device supports roaming on different networks. To avoid repetition, it will not be repeated here.
  • the first indication information or the second indication information is an idle bit in the core network capability information.
  • a field with an idle bit is selected to carry the above-mentioned first indication information or the second indication information.
  • the terminal device does not support VoNR or does not support roaming on a different network; when the bit of this field is 1, the terminal device supports VoNR or supports roaming on a different network.
  • the terminal device when the terminal device supports roaming on different networks, the terminal device starts searching for the roaming frequency band of different networks, and/or accesses the visited network corresponding to the network identifier included in the EPLMN list; or, when the terminal device does not support roaming on different networks, the terminal device turns off searching for the roaming frequency band of different networks, and/or prohibits access to the visited network corresponding to the network identifier included in the EPLMN list.
  • the frequency band for roaming in a different network may be, for example, the n28 frequency band of 700M, which is determined by the current network deployment.
  • the EPLMN list here may include a network identifier of at least one visited network.
  • the terminal device can be prohibited from accessing the visited network corresponding to the network identifier included in the EPLMN list, that is, the terminal device does not reside in the visited network corresponding to the network identifier included in the EPLMN list.
  • the following uses the combination of the above information (1) and (5) to determine whether the terminal device supports roaming on different networks as an example to illustrate the embodiment of the present application.
  • FIG3 is a schematic flow chart of another access method 300 based on roaming in a different network provided in an embodiment of the present application.
  • the method 300 can be applied to the above communication system 100 and executed by a terminal device.
  • the method 300 includes the following steps:
  • S303 When the home network of the terminal device is a preset network, it is determined that the terminal device does not support roaming on a different network, and the terminal device turns off the search for the roaming frequency band of the different network, and/or prohibits access to the visited network corresponding to the network identifier included in the EPLMN list.
  • the terminal device does not support VoNR, it is determined that the terminal device does not support roaming on a different network, and the terminal device turns off the search for the roaming frequency band of the different network, and/or prohibits access to the visited network corresponding to the network identifier included in the EPLMN list.
  • the method 300 shown in Figure 3 is only used as an example to first determine whether the terminal device supports VoNR. If the terminal device supports VoNR, then determine whether the home network of the terminal device is a preset network. In another possible implementation method, it is also possible to first determine whether the home network of the terminal device is a preset network. If the home network of the terminal device is not a preset network, then determine whether the terminal device supports VoNR. The embodiment of the present application is not limited to this.
  • FIG4 is a schematic flow chart of another terminal device access method 400 provided in an embodiment of the present application.
  • the method can be applied to the above communication system 100.
  • the method 400 includes the following steps:
  • the core network device sends a wireless capability query request to the access network device.
  • the wireless capability query request is used to Request to query the wireless capability of the terminal device.
  • the access network device receives the wireless capability query request from the core network device.
  • the capability information of the terminal device includes wireless capability information and core network capability information, wherein the wireless capability information can be reported through radio resource control (RRC) signaling, and the core network capability information can be reported through NAS signaling.
  • the wireless capability information includes information indicating whether the terminal device supports VoNR or whether it supports roaming on different networks, but the core network device cannot parse it and needs to send a wireless capability query request to the access network device.
  • the access network device Based on the wireless capability query request, the access network device sends a wireless capability query response to the core network device, where the wireless capability query response includes first indication information or second indication information, where the first indication information is used to indicate whether the terminal device supports VoNR, and the second indication information is used to indicate whether the terminal device supports cross-network roaming.
  • the core network device receives the wireless capability query response from the access network device.
  • the access network device parses the wireless capability information of the terminal device, obtains the above-mentioned first indication information or second indication information, and sends a wireless capability query response to the core network device.
  • the core network device determines whether the terminal device supports roaming on different networks based on the wireless capability query response.
  • the core network device makes a judgment based on the first indication information and other information.
  • the core network device can directly judge whether the terminal device supports roaming on different networks based on the second indication information.
  • the terminal device receives the EPLMN list from the core network device, and the terminal device can search for the PLMN network in the EPLMN list, thereby roaming to the visited network.
  • the core network device will send the EPLMN list to the terminal device only if the terminal device supports roaming on a different network. If the terminal device does not support roaming on a different network, the core network device will not send the EPLMN list to the terminal device, and the terminal device will still reside in the home network. In this way, for terminal devices that do not support VoNR or roaming on a different network, if there is a 4G signal in the home network, the terminal device can continue to use the 4G signal under the home network for voice calls. For terminal devices that support roaming on a different network, the terminal device can roam to the visited network and use the 5G signal under the visited network for voice calls, thereby obtaining a higher quality and higher speed voice service experience. Therefore, the access method based on roaming on a different network in an embodiment of the present application is conducive to ensuring voice calls of terminal devices in roaming scenarios on a different network, thereby improving the user experience.
  • the wireless capability information includes the first indication information
  • the wireless capability query response includes the first indication information
  • the core network device determines whether the terminal device supports roaming on different networks based on the wireless capability query response, including: the core network device determines whether the terminal device supports roaming on different networks according to at least one of the following information:
  • the method by which the core network device determines whether the terminal device supports roaming on different networks based on at least one of the above information has been described above and will not be repeated here.
  • the wireless capability information includes first indication information
  • the wireless capability query response includes second indication information
  • the method 400 further includes:
  • the access network device determines the second indication information (i.e., determines whether the terminal device supports cross-network roaming) according to at least one of the following information:
  • the method by which the access network device determines whether the terminal device supports roaming on different networks is the same as the method by which the core network device determines whether the terminal device supports roaming on different networks, and will not be repeated here.
  • the wireless capability information includes the second indication information
  • the method 400 further includes: the terminal device determines the second indication information (i.e., determines whether the terminal device supports cross-network roaming) according to at least one of the following information:
  • the method by which a terminal device determines whether the terminal device supports roaming on different networks is the same as the method by which a core network device determines whether the terminal device supports roaming on different networks, and will not be repeated here.
  • the first indication information or the second indication information is located in a newly added field in the wireless capability query response.
  • FIG. 5 shows an access device 500 based on cross-network roaming provided in an embodiment of the present application.
  • the device 500 includes a processing module 501 and a transceiver module 502 .
  • the apparatus 500 is used to implement the steps corresponding to the terminal device in the above method 200.
  • the processing module 501 is used to determine the first indication information or the second indication information, the first indication information is used to indicate whether the device 500 supports the new wireless voice service VoNR, and the second indication information is used to indicate whether the device 500 supports roaming on different networks; the transceiver module 502 is used to send core network capability information to the core network device, and the core network capability information includes the first indication information or the second indication information.
  • the first indication information or the second indication information is an idle bit in the core network capability information.
  • the core network capability information includes second indication information; the processing module 501 is specifically configured to: determine whether the device 500 supports cross-network roaming according to at least one of the following information:
  • the device 500 supports the frequency band for carrying cross-network roaming
  • the device 500 supports slice mapping between the visited network and the home network after roaming in a different network
  • the device 500 supports a fast emergency call strategy for a visited network after roaming in a different network
  • the home network of the device 500 is a preset network.
  • the transceiver module 502 is further configured to: receive an equivalent public land mobile network EPLMN list from a core network device.
  • the processing module 501 is also used to: when the above-mentioned device 500 supports roaming on an alternative network, start searching for the roaming frequency band of the alternative network, and/or, access the visited network corresponding to the network identifier included in the EPLMN list; or, when the above-mentioned device 500 does not support roaming on an alternative network, turn off searching for the roaming frequency band of the alternative network, and/or, prohibit access to the visited network corresponding to the network identifier included in the EPLMN list.
  • the apparatus 500 is used to implement the steps corresponding to the core network device in the above method 200.
  • the transceiver module 502 is used to receive core network capability information from the terminal device, the core network capability information includes first indication information or second indication information, the first indication information is used to indicate whether the terminal device supports the new wireless voice service VoNR, and the second indication information is used to indicate whether the terminal device supports roaming on different networks; the processing module 501 is used to determine whether the terminal device supports roaming on different networks based on the core network capability information; and, if the terminal device supports roaming on different networks, send an equivalent public land mobile network EPLMN list to the terminal device.
  • the core network capability information includes first indication information or second indication information, the first indication information is used to indicate whether the terminal device supports the new wireless voice service VoNR, and the second indication information is used to indicate whether the terminal device supports roaming on different networks;
  • the processing module 501 is used to determine whether the terminal device supports roaming on different networks based on the core network capability information; and, if the terminal device supports roaming on different networks, send an equivalent public land mobile network EPLMN list to the terminal device.
  • the core network capability information includes first indication information; the processing module 501 is used to: according to the first indication information and at least one of the following information to determine whether the terminal device supports cross-network roaming:
  • the terminal device Whether the terminal device supports the frequency band for roaming on different networks
  • the terminal device Whether the terminal device supports slice mapping between the visited network and the home network after roaming on a different network
  • the terminal device supports the fast emergency call strategy of the visited network after roaming in another network
  • the home network of the terminal device is the preset network.
  • the first indication information or the second indication information is an idle bit in the core network capability information.
  • the apparatus 500 is used to implement the steps corresponding to the core network device in the above method 400.
  • the transceiver module 502 is used to send a wireless capability query request to the access network device, the wireless capability query request is used to request to query the wireless capability of the terminal device; and, receive a wireless capability query response from the access network device, the wireless capability query response includes a first indication information or a second indication information, the first indication information is used to indicate whether the terminal device supports the new wireless voice service VoNR, and the second indication information is used to indicate whether the terminal device supports roaming on a different network; the processing module 501 is used to determine whether the terminal device supports roaming on a different network based on the wireless capability query response; the transceiver module 502 is also used to send an equivalent public land mobile network EPLMN list to the terminal device when the terminal device supports roaming on a different network.
  • the wireless capability query response includes first indication information; the processing module 501 is used to: determine whether the terminal device supports cross-network roaming according to the first indication information and at least one of the following information:
  • the terminal device Whether the terminal device supports the frequency band for roaming on different networks
  • the terminal device Whether the terminal device supports slice mapping between the visited network and the home network after roaming on a different network
  • the terminal device supports the fast emergency call strategy of the visited network after roaming in another network
  • the home network of the terminal device is the preset network.
  • the device 500 here is embodied in the form of a functional module.
  • the term "module” here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combined logic circuit and/or other suitable components that support the described functions.
  • ASIC application specific integrated circuit
  • the device 500 can be specifically a terminal device or a core network device in the above-mentioned embodiment, and the device 500 can be used to execute the various processes and/or steps corresponding to the terminal device or the core network device in the above-mentioned method embodiment. To avoid repetition, it will not be repeated here.
  • the above-mentioned device 500 has the function of implementing the corresponding steps executed by the terminal device or the core network device in the above-mentioned method: the above-mentioned function can be implemented by hardware, or it can be implemented by hardware executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the above-mentioned transceiver module 502 may include a sending module and a receiving module, the sending module can be used to implement the various steps and/or processes for performing the sending action corresponding to the above-mentioned transceiver module, and the receiving module can be used to implement the various steps and/or processes for performing the receiving action corresponding to the above-mentioned transceiver module.
  • the sending module can be replaced by a transmitter, and the receiving module can be replaced by a receiver, respectively performing the sending and receiving operations and related processing operations in each method embodiment.
  • FIG6 shows another access device 600 based on cross-network roaming provided in an embodiment of the present application.
  • the access device 600 includes a receiving module 601 and a sending module 602 .
  • the apparatus 600 is used to implement the steps corresponding to the access network device in the above method 400.
  • the receiving module 601 is used to receive a wireless capability query request from a core network device, where the wireless capability query request is used to request to query the wireless capability of a terminal device; the sending module 602 sends a wireless capability query response to the core network device based on the wireless capability query request, where the wireless capability query response includes a first indication information or a second indication information, where the first indication information is used to indicate whether the terminal device supports the new wireless voice service VoNR, and the second indication information is used to indicate whether the terminal device supports roaming on a different network.
  • the receiving module 601 is further used to: receive wireless capability information from a terminal device, where the wireless capability information includes the first indication information or the second indication information.
  • the wireless capability information includes first indication information
  • the wireless capability query response includes second indication information
  • the apparatus 600 further includes: a processing module, configured to determine the second indication information according to the first indication information and at least one of the following information:
  • the terminal device Whether the terminal device supports the frequency band for roaming on different networks
  • the terminal device Whether the terminal device supports slice mapping between the visited network and the home network after roaming on a different network
  • the terminal device supports the fast emergency call strategy of the visited network after roaming in another network
  • the home network of the terminal device is the preset network.
  • the device 600 here is embodied in the form of a functional module.
  • the term "module” here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combined logic circuit and/or other suitable components that support the described functions.
  • ASIC application specific integrated circuit
  • the device 600 can be specifically the access network device in the above embodiment, and the device 600 can be used to execute the various processes and/or steps corresponding to the access network device in the above method embodiment. To avoid repetition, it will not be repeated here.
  • the above-mentioned device 600 has the function of implementing the corresponding steps executed by the access network device in the above-mentioned method: the above-mentioned function can be implemented by hardware, or by hardware executing the corresponding software implementation.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the sending module 602 can be used to execute the various steps and/or processes of the sending action
  • the receiving module 601 can be used to execute the various steps and/or processes of the receiving action.
  • the sending module 602 can be replaced by a transmitter
  • the receiving module 601 can be replaced by a receiver, respectively performing the sending and receiving operations and related processing operations in each method embodiment.
  • the access devices 500 and 600 based on cross-network roaming in FIG. 5 and FIG. 6 may also be chips or chip systems, such as system on chip (SOC).
  • the transceiver module 502, the receiving module 601 and the sending module 602 may be transceiver circuits of the chip, which is not limited here.
  • FIG7 shows another access device 700 based on cross-network roaming provided by an embodiment of the present application
  • the access device 700 includes a processor 701, a transceiver 702, and a memory 703.
  • the processor 701, the transceiver 702, and the memory 703 communicate with each other through an internal connection path, the memory 703 is used to store commands, and the processor 701 is used to execute the instructions stored in the memory 703 to control the transceiver 702 to send signals and/or receive signals.
  • the access device 700 can be specifically any one of the terminal device, access network device or core network device in the above-mentioned embodiments, and can be used to execute the various steps and/or processes corresponding to any one of the terminal device, access network device and core network device in the above-mentioned method embodiments.
  • the memory 703 may include a read-only memory and a random access memory, and provide instructions and data to the processor.
  • a portion of the memory may also include a non-volatile random access memory.
  • the memory may also store information about the device type.
  • the processor 701 may The processor 701 is used to execute the instructions stored in the memory, and when the processor 701 executes the instructions stored in the memory, the processor 701 is used to execute the various steps and/or processes of the method embodiment corresponding to any one of the terminal device, the access network device and the core network device.
  • the transceiver 702 may include a transmitter and a receiver, and the transmitter may be used to implement the various steps and/or processes corresponding to the above transceiver for performing the sending action, and the receiver may be used to implement the various steps and/or processes corresponding to the above transceiver for performing the receiving action.
  • the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • CPU central processing unit
  • DSP digital signal processors
  • ASIC application-specific integrated circuits
  • FPGA field programmable gate arrays
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.
  • the steps of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in a processor for execution.
  • the software module can be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc.
  • the storage medium is located in a memory, and the processor executes the instructions in the memory, and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.
  • the present application also provides a computer-readable storage medium for storing a computer program for implementing a method corresponding to any one of a terminal device, an access network device, and a core network device in the above-mentioned embodiment.
  • the present application also provides a computer program product, which includes a computer program (also referred to as code, or instruction).
  • a computer program also referred to as code, or instruction.
  • the computer program runs on a computer, the computer can execute the method corresponding to any one of the terminal device, access network device, and core network device in the above-mentioned embodiments.
  • the present application also provides a communication system based on cross-network roaming, including the above-mentioned terminal device, access network device or core network device.
  • modules and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.
  • modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed to various locations. On multiple network modules, some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.
  • the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art.
  • the computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

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Abstract

本申请提供了一种基于异网漫游的接入方法和装置，有利于保障终端设备在异网漫游场景下的语音通话，从而提升用户体验。该方法包括：终端设备确定第一指示信息或第二指示信息，第一指示信息用于指示终端设备是否支持新无线的语音服务VoNR，第二指示信息用于指示终端设备是否支持异网漫游；终端设备向核心网设备发送核心网能力信息，核心网能力信息包括第一指示信息或第二指示信息；核心网设备接收来自终端设备的核心网能力信息；核心网设备基于核心网能力信息，判断终端设备是否支持异网漫游；在终端设备支持异网漫游的情况下，核心网设备向终端设备发送等效公共陆地移动网络EPLMN列表。

Description

基于异网漫游的接入方法和装置
本申请要求于2022年8月30日提交中国国家知识产权局、申请号为202211061621.1、申请名称为“基于异网漫游的接入方法和装置”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
本申请涉及通信技术领域，尤其涉及一种基于异网漫游的接入方法和装置。
背景技术
异网漫游是一项服务，通过该服务，给定公共陆地移动网络(public land mobile network，PLMN)的终端设备能够从同一国家的任何地方或区域的另一个PLMN获得服务。目前，存在两种漫游场景，在一种漫游场景下，当终端设备在归属网络无信号覆盖时，终端设备需要漫游到拜访网络，由拜访网络为终端设备提供服务；在另一种漫游场景下，终端设备在归属网络的覆盖范围内只有第四代移动通信(the 4th generation mobile communication technology，4G)信号，没有第五代移动通信(the 5th generation mobile communication technology，5G)信号，终端设备需要漫游到拜访网络，由拜访网络为终端设备提供5G服务。通常，归属网络和拜访网络分别属于不同的运营商。
但是，上述拜访网络只有5G信号，没有4G信号，且存在一些不支持新无线的语音服务(voice over new radio，VoNR)的终端设备，当不支持VoNR的终端设备漫游到拜访网络时，终端设备将无法进行语音通话，用户体验较差。
发明内容
本申请实施例提供了一种基于异网漫游的接入方法和装置，有利于保障终端设备在异网漫游场景下的语音通话，从而提升用户体验。
第一方面，提供了一种基于异网漫游的接入方法，该方法包括：终端设备确定第一指示信息或第二指示信息，该第一指示信息用于指示该终端设备是否支持新无线的语音服务VoNR，该第二指示信息用于指示该终端设备是否支持异网漫游；该终端设备向核心网设备发送核心网能力信息，该核心网能力信息包括该第一指示信息或该第二指示信息。
应理解，终端设备支持VoNR是终端设备支持异网漫游的一个必要条件，换句话说，支持VoNR的终端设备不一定支持异网漫游，但是，支持异网漫游的终端设备一定支持VoNR。
还应理解，上述核心网能力信息是终端设备先发送给接入网设备，再由接入网设备发送给核心网设备的，即上述核心网能力信息是接入网设备透传给核心网设备的。示例性地，核心网能力信息可以通过非接入层(non-access stratum，NAS)信令发送。
本申请实施例提供的基于异网漫游的接入方法，终端设备向核心网设备发送核心网能力信息，在终端设备支持异网漫游的情况下，终端设备会接收到核心网设备发送的EPLMN列表，若终端设备不支持异网漫游，终端设备不会接收到核心网设备发送的EPLMN列表，终端设备会依旧驻留在归属网络，这样，对于不支持VoNR或异网漫游的终端设备而言，若归属网络存在4G信号，该终端设备可以继续使用归属网络下的4G信号进行语音通话，对于支持异网漫游的终端设备而言，该终端设备可以漫游到拜访网络，使用拜访网络下的5G信号进行语音通话，获得更高质量、更高速率的语音业务体验。因此，本申请实施例的基于异网漫游的接入方法，有利于保障终端设备在异网漫游场景下的语音通话，从而提升用户体验。
结合第一方面，在第一方面的某些实现方式中，该第一指示信息或该第二指示信息为该核心网能力信息中的空闲比特。
示例性地，当核心网能力信息中的空闲比特为第一值时，第一指示信息指示终端设备支持VoNR，或者，第二指示信息指示终端设备支持异网漫游；当核心网能力信息中的空闲比特为第二值时，第一指示信息指示终端设备不支持VoNR，或者，第二指示信息指示终端设备不支持异网漫游。示例性地，上述空闲比特可以为1比特，第一值为1，第二值为0，或者，第一值为0，第二值为1，本申请实施例对此不作限定。
结合第一方面，在第一方面的某些实现方式中，核心网能力信息包括该第二指示信息；该终端设备确定该第二指示信息，包括：该终端设备根据下列信息中的至少一个，判断该终端设备是否支持异网漫游：该终端设备是否支持VoNR；该终端设备是否支持承载异网漫游的频段；该终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；该终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；该终端设备的归属网络是否为预设网络。
结合第一方面，在第一方面的某些实现方式中，该终端设备接收来自该核心网设备的等效公共陆地移动网络EPLMN列表。
进一步地，终端设备可以按照EPLMN列表中的PLMN网络进行搜网，从而漫游到拜访网络上。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：在该终端设备支持异网漫游的情况下，该终端设备开启对异网漫游频段的搜网，和/或，接入EPLMN列表中包括的网络标识所对应的拜访网络；或者，在该终端设备不支持异网漫游的情况下，该终端设备关闭对异网漫游频段的搜网，和/或，禁止接入EPLMN列表中包括的网络标识所对应的拜访网络。
本申请实施例的接入方法，在终端设备不支持异网漫游的情况下，终端设备关闭对异网漫游频段的搜网，和/或，禁止接入EPLMN列表中包括的网络标识所对应的拜访网络，确保终端设备不会漫游到拜访网络，且节省了终端设备的能耗。
第二方面，提供了另一种基于异网漫游的接入方法，该方法包括：核心网设备接收来自终端设备的核心网能力信息，该核心网能力信息包括第一指示信息或第二指示信息，该第一指示信息用于指示该终端设备是否支持新无线的语音服务VoNR，该第二指示信息用于指示该终端设备是否支持异网漫游；该核心网设备基于该核心网能力信息，判断该终端设备是否支持异网漫游；在该终端设备支持异网漫游的情况下，该 核心网设备向该终端设备发送等效公共陆地移动网络EPLMN列表。
在核心网能力信息包括第一指示信息(即指示终端设备是否支持VoNR)的情况下，核心网设备可以根据该第一指示信息以及其他信息进行判断。在核心网能力信息包括第二指示信息(即指示终端设备是否支持异网漫游)的情况下，核心网设备可以基于该第二指示信息直接判断出终端设备是否支持异网漫游。
结合第二方面，在第二方面的某些实现方式中，该核心网能力信息包括该第一指示信息；该核心网设备基于该核心网能力信息，判断该终端设备是否支持异网漫游，包括：该核心网设备根据该第一指示信息以及下列信息中的至少一个，判断该终端设备是否支持异网漫游：该终端设备是否支持承载异网漫游的频段；该终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；该终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；该终端设备的归属网络是否为预设网络。
结合第二方面，在第二方面的某些实现方式中，该第一指示信息或该第二指示信息为该核心网能力信息中的空闲比特。
第三方面，提供了一种基于异网漫游的接入方法，该方法包括：接入网设备接收来自核心网设备的无线能力查询请求，该无线能力查询请求用于请求查询终端设备的无线能力；该接入网设备基于该无线能力查询请求，向该核心网设备发送无线能力查询响应，该无线能力查询响应包括第一指示信息或第二指示信息，该第一指示信息用于指示该终端设备是否支持新无线的语音服务VoNR，该第二指示信息用于指示该终端设备是否支持异网漫游。
应理解，当接入网设备接收来自核心网设备的无线能力查询请求之后，接入网设备对终端设备的无线能力信息进行解析，获得上述第一指示信息或第二指示信息，向核心网设备发送无线能力查询响应。
结合第三方面，在第三方面的某些实现方式中，在该接入网设备基于该无线能力查询请求，向该核心网设备发送无线能力查询响应之前，该方法还包括：该接入网设备接收来自该终端设备的无线能力信息，该无线能力信息包括该第一指示信息或该第二指示信息。
结合第三方面，在第三方面的某些实现方式中，该无线能力信息包括该第一指示信息，该无线能力查询响应包括第二指示信息；该方法还包括：该接入网设备根据该第一指示信息以及下列信息中的至少一个，确定该第二指示信息：该终端设备是否支持承载异网漫游的频段；该终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；该终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；该终端设备的归属网络是否为预设网络。
第四方面，提供了一种基于异网漫游的接入方法，该方法包括：核心网设备向接入网设备发送无线能力查询请求，该无线能力查询请求用于请求查询终端设备的无线能力；该核心网设备接收来自该接入网设备的无线能力查询响应，该无线能力查询响应包括第一指示信息或第二指示信息，该第一指示信息用于指示该终端设备是否支持新无线的语音服务VoNR，该第二指示信息用于指示该终端设备是否支持异网漫游；该核心网设备基于该无线能力查询响应，判断该终端设备是否支持异网漫游；在该终端设备支持异网漫游的情况下，该核心网设备向该终端设备发送等效公共陆地移动网 络EPLMN列表。
应理解，终端设备的能力信息包括无线能力信息和核心网能力信息，其中，无线能力信息可以通过无线资源控制(radio resource control，RRC)信令上报，核心网能力信息可以通过NAS信令上报。无线能力信息中包括了用于指示终端设备是否支持VoNR或是否支持异网漫游的信息，但核心网设备无法解析，需要向接入网设备发送无线能力查询请求。
进一步地，终端设备接收来自核心网设备的EPLMN列表，终端设备可以按照EPLMN列表中的PLMN网络进行搜网，从而漫游到拜访网络上。
结合第四方面，在第四方面的某些实现方式中，该无线能力查询响应包括该第一指示信息；该核心网设备基于该无线能力查询响应，判断该终端设备是否支持异网漫游，包括：该核心网设备根据该第一指示信息以及下列信息中的至少一个，判断该终端设备是否支持异网漫游：该终端设备是否支持承载异网漫游的频段；该终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；该终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；该终端设备的归属网络是否为预设网络。
第五方面，提供了一种基于异网漫游的接入装置，用于执行上述各个方面中任一种可能的实现方式中的方法。具体地，该接入装置包括用于执行上述各个方面中任一种可能的实现方式中的方法的模块。
在一种设计中，该接入装置可以包括执行上述各个方面中所描述的方法/操作/步骤/动作所一一对应的模块，该模块可以是硬件电路，也可以是软件，也可以是硬件电路结合软件实现。
在另一种设计中，该接入装置为通信芯片，通信芯片可以包括用于发送消息或数据的输入电路或者接口，以及用于接收信息或数据的输出电路或者接口。
在另一种设计中，该接入装置可以为通信设备，通信设备可以包括用于发送消息或数据的发射机，以及用于接收信息或数据的接收机。
第六方面，提供了另一种基于异网漫游的接入装置，包括处理器和存储器。该处理器用于读取存储器中存储的指令，并可通过接收器接收信号，通过发射器发射信号，以执行上述各个方面中的任一种可能实现方式中的方法。
可选地，处理器为一个或多个，存储器为一个或多个。
可选地，存储器可以与处理器集成在一起，或者存储器与处理器分离设置。
在具体实现过程中，存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(read only memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
应理解，相关的数据交互过程例如发送指示信息可以为从处理器输出指示信息的过程，接收能力信息可以为处理器接收输入能力信息的过程。具体地，处理输出的数据可以输出给发射器，处理器接收的输入数据可以来自接收器。其中，发射器和接收器可以统称为收发器。
上述第六方面中的接入装置可以是一个芯片，该处理器可以通过硬件来实现也可以通过软件来实现，当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当 通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于该处理器之外，独立存在。
第七方面，提供了一种通信系统，包括用于实现上述第一方面或第一方面的任一种可能实现的方法的装置，以及用于实现上述第二方面或第二方面的任一种可能实现的方法的装置。
第八方面，提供了另一种通信系统，包括用于实现上述第三方面或第三方面的任一种可能实现的方法的装置，以及用于实现上述第四方面或第四方面的任一种可能实现的方法的装置。
第九方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序(也可以称为代码，或指令)，当其在计算机上运行时，使得计算机执行上述各个方面中的任一种可能实现方式中的方法。
第十方面，提供了一种计算机程序产品，计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当计算机程序被运行时，使得计算机执行上述各个方面中的任一种可能实现方式中的方法。
附图说明
图1是本申请实施例的一种通信系统的示意图；
图2是本申请实施例提供的一种基于异网漫游的接入方法的示意性流程图；
图3是本申请实施例提供的一种判断终端设备是否支持异网漫游的方法的示意性流程图；
图4是本申请实施例提供的另一种基于异网漫游的接入方法的示意性流程图；
图5是本申请实施例提供的一种基于异网漫游的接入装置的示意性框图；
图6是本申请实施例提供的另一种基于异网漫游的接入装置的示意性框图；
图7是本申请实施例提供的又一种基于异网漫游的接入装置的示意性框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
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。例如，第一芯片和第二芯片仅仅是为了区分不同的芯片，并不对其先后顺序进行限定。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。
需要说明的是，本申请实施例中，“示例性地”或者“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例性地”或者“例如”的任何实施例或设计方案不应被解释为比其他实施例或设计方案更优选或更具优势。确切而言，使用“示例性地”或者“例如”等词旨在以具体方式呈现相关概念。
本申请实施例中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“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。“以下至少一项(个)” 或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a--c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、第五代(5th generation，5G)系统或新无线(new radio，NR)或者其他演进的通信系统等。
本申请实施例中的终端设备也可以称为：用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置等。
终端设备可以是一种向用户提供语音/数据连通性的设备，例如，具有无线连接功能的手持式设备、车载设备等。目前，一些终端的举例为：手机(mobile phone)、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，虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)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、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的公共陆地移动网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，在本申请实施例中，终端设备还可以是物联网(internet of things，IoT)系统中的终端设备，IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。
另外，本申请实施例中的接入网设备可以是用于与终端设备通信的设备，该接入网设备也可称为无线接入网设备，可以是传输接收点(transmission reception point，TRP)，还可以是LTE系统中的演进型基站(evolved NodeB，eNB或eNodeB)，还 可以是家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)，还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器，或者该接入网设备可以为中继站、接入点、车载设备、可穿戴设备以及5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等，可以是WLAN中的接入点(access point，AP),可以是新型无线(new radio，NR)系统中的gNB，可以是卫星通信系统中的卫星基站等，本申请实施例并不限定。
在一种网络结构中，接入网设备可以包括集中单元(centralized unit，CU)节点、或分布单元(distributed unit，DU)节点、或包括CU节点和DU节点的RAN设备、或者控制面CU节点(CU-CP节点)和用户面CU节点(CU-UP节点)以及DU节点的RAN设备。
接入网设备为小区提供服务，终端设备通过接入网设备分配的传输资源(例如，频域资源，或者说，频谱资源)与小区进行通信，该小区可以属于宏基站(例如，宏eNB或宏gNB等)，也可以属于小小区(small cell)对应的基站，这里的小小区可以包括：城市小区(metro cell)、微小区(micro cell)、微微小区(pico cell)、毫微微小区(femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
本申请实施例的核心网设备可以是4G网络中的核心网网元，例如，移动管理实体(mobile management entity，MME)、服务网关(serving gateway，sGW)等，也可以是5G网络中的核心网网元，例如，接入和移动性管理功能(access and mobility management function，AMF)网元、用户平面功能(user plane function，UPF)网元等，还可以是具有其他名称的核心网网元，本申请实施例对此不作限定。
本申请实施例中的接入网设备和核心网设备可以统称为网络设备。
在本申请实施例中，终端设备、接入网设备和核心网设备包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。并且，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是终端设备、接入网设备和核心网设备中的一种，或者，是上述设备中能够调用程序并执行程序的功能模块。
另外，本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于：磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。 另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
为便于理解本申请实施例，首先结合图1对适用于本申请实施例的通信系统进行详细说明。
图1为本申请实施例提供的一种通信系统100的示意图，该通信系统100可以包括终端设备101、接入网设备102和核心网设备103。其中，终端设备101通过无线的方式与接入网设备102相连，接入网设备102可以通过无线或有线的方式与核心网设备103连接。
应理解，在上述通信系统中，终端设备、接入网设备和核心网设备都可以有多个，本申请实施例对此不做限定。
应理解，图1只是示意图，该通信系统100中还可以包括其它网络设备，例如，无线中继设备和无线回传设备，图1中未示出。本申请实施例对该通信系统100中包括的核心网设备、接入网设备和终端设备的数量不做限定。
异网漫游是一项服务，通过该服务，给定公共陆地移动网络(public land mobile network，PLMN)的终端设备能够从同一国家的任何地方或区域的另一个PLMN获得服务。目前，存在两种漫游场景，在一种漫游场景下，当终端设备在归属网络无信号覆盖时，终端设备需要漫游到拜访网络，由拜访网络为终端设备提供服务；在另一种漫游场景下，终端设备在归属网络的覆盖范围内只有第四代移动通信(the 4th generation mobile communication technology，4G)信号，没有第五代移动通信(the 5th generation mobile communication technology，5G)信号，终端设备需要漫游到拜访网络，由拜访网络为终端设备提供5G服务。
但是，上述拜访网络只有5G信号，没有4G信号，且存在一些不支持新无线的语音服务(voice over new radio，VoNR)的终端设备，当不支持VoNR的终端设备漫游到拜访网络时，终端设备将无法进行语音通话，用户体验较差。
有鉴于此，本申请实施例提出了一种基于异网漫游的接入方法，有利于保障终端设备在异网漫游场景下的语音通话，从而提升用户体验。
为便于理解，首先对本申请实施例所涉及的术语进行简单介绍。
1、公共陆地移动网络(public land mobile network，PLMN)：由政府或其所批准的经营者，为公众提供陆地移动通信业务目的而建立和经营的网络。该网络通常与公众交换电话网互连，形成整个地区或国家规模的通信网。
2、等效公共陆地移动网络(equivalent public land mobile network，EPLMN)：是与终端设备当前所选择的PLMN处于同等地位的PLMN。EPLMN主要解决共享网络与原网络的用户驻留和漫游策略。运营商可以配置EPLMN，这些网络之间可以实现通信网络资源共享。从业务的角度，它使得不同运营商的网络资源之间，或者同一运营商定义的不同PLMN之间可以实现通信网络资源共享。
应理解，归属网络和拜访网络会互发EPLMN。例如，终端设备的归属网络的PLMN为PLMN1，拜访网络的PLMN为PLMN2，拜访网络和归属网络会互发对方网络PLMN为EPLMN，这样，当PLMN1下无网络或者只有4G网络时，按照现有标准规定的搜 网流程，终端设备会漫游到EPLMN(即PLMN2)的5G网络下驻留。
3、新无线的语音服务(voice over new radio，VoNR)：也称为新空口的语音服务、新空口承载语音、5G网络的目标语音解决方案等，支持VoNR的终端设备可以基于NR网络直接进行语音通话，无需回落到4G网络，从而获得更高质量的语音业务体验和更高速率的数据业务体验。
下面将详细说明本申请提供的各个实施例。
本申请实施例以终端设备、接入网设备和核心网设备为例进行描述，应理解，终端设备可以替换为能够实现与终端设备类似的功能的装置或芯片，接入网设备也可以替换为能够实现与接入网设备类似的功能的装置或芯片，核心网设备也可以替换为能够实现与核心网设备类似的功能的装置或芯片，本申请实施例对其名称不作限定。
图2是本申请实施例提供的一种基于异网漫游的接入方法200的示意性流程图。该方法可以应用于上述通信系统100中。该方法200包括下列步骤：
S201，终端设备确定第一指示信息或第二指示信息，第一指示信息用于指示终端设备是否支持新无线的语音服务VoNR，第二指示信息用于指示终端设备是否支持异网漫游。
应理解，终端设备支持VoNR是终端设备支持异网漫游的一个必要条件，换句话说，支持VoNR的终端设备不一定支持异网漫游，但是，支持异网漫游的终端设备一定支持VoNR。
S202，终端设备向核心网设备发送核心网能力信息，该核心网能力信息包括上述第一指示信息或第二指示信息。对应地，核心网设备接收来自终端设备的核心网能力信息。
应理解，上述核心网能力信息是终端设备先发送给接入网设备，再由接入网设备发送给核心网设备的，即上述核心网能力信息是接入网设备透传给核心网设备的。示例性地，核心网能力信息可以通过非接入层(non-access stratum，NAS)信令发送。
S203，核心网设备基于核心网能力信息，判断终端设备是否支持异网漫游。
在核心网能力信息包括第一指示信息(即指示终端设备是否支持VoNR)的情况下，核心网设备可以根据该第一指示信息以及其他信息进行判断。在核心网能力信息包括第二指示信息(即指示终端设备是否支持异网漫游)的情况下，核心网设备可以基于该第二指示信息直接判断出终端设备是否支持异网漫游。
S204，在终端设备支持异网漫游的情况下，核心网设备向终端设备发送EPLMN列表；对应地，终端设备接收来自核心网设备的EPLMN列表。
进一步地，终端设备可以按照EPLMN列表中的PLMN网络进行搜网，从而漫游到拜访网络上。
在本申请实施例中，核心网设备只有在终端设备支持异网漫游的情况下，才会向终端设备发送EPLMN列表，若终端设备不支持异网漫游，核心网设备不会向终端设备发送EPLMN列表，终端设备依旧驻留在归属网络。这样，对于不支持VoNR或异网漫游的终端设备而言，若归属网络存在4G信号，该终端设备可以继续使用归属网络下的4G信号进行语音通话，对于支持异网漫游的终端设备而言，该终端设备可以漫游到拜访网络，使用拜访网络下的5G信号进行语音通话，获得更高质量、更高速 率的语音业务体验。因此，本申请实施例的基于异网漫游的接入方法，有利于保障终端设备在异网漫游场景下的语音通话，从而提升用户体验。
下面，按照上述核心网能力信息的具体内容，分两种可能的实现方式进行解释说明。
在一种可能的实现方式中，核心网能力信息包括第一指示信息，上述S203，核心网设备基于核心网能力信息，判断终端设备是否支持异网漫游，包括：核心网设备根据下列信息中的至少一个，判断终端设备是否支持异网漫游：
(1)第一指示信息，即终端设备是否支持VoNR；
(2)终端设备是否支持承载异网漫游的频段；
(3)终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
(4)终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
(5)终端设备的归属网络是否为预设网络。
示例性地，核心网设备可以仅根据上述信息中的(1)判断终端设备是否支持异网漫游。当终端设备支持VoNR时，终端设备支持异网漫游；当终端设备不支持VoNR时，终端设备不支持异网漫游。
示例性地，核心网设备可以根据上述信息中的(1)和(2)判断终端设备是否支持异网漫游。当终端设备支持VoNR且支持承载异网漫游的频段时，终端设备支持异网漫游；当终端设备不支持VoNR和/或不支持承载异网漫游的频段时，终端设备不支持异网漫游。
应理解，上述承载异网漫游的频段可以为700M的n28频段，由当前网络部署决定，终端设备会向核心网设备上报自身所支持的频段(例如，通过核心网能力信息上报)，以便核心网设备进行判断。
示例性地，核心网设备可以根据上述信息中的(1)、(2)和(3)判断终端设备是否支持异网漫游。当终端设备支持VoNR、支持承载异网漫游的频段、且支持异网漫游后拜访网络和归属网络之间的切片映射时，终端设备支持异网漫游；当终端设备不支持(1)、(2)和(3)中的任一项时，终端设备不支持异网漫游。
示例性地，核心网设备可以根据上述信息中的(1)、(2)和(5)判断终端设备是否支持异网漫游。当终端设备支持VoNR、支持承载异网漫游的频段、且终端设备的归属网络不是预设网络时，终端设备支持异网漫游；当终端设备不支持(1)和/或(2)、或者终端设备的归属网络是预设网络时，终端设备不支持异网漫游。
应理解，这里的预设网络可以表示为特定运营商，在特定运营商下，即便归属网络为4G信号，但由于该特定运营商在归属网络下4G信号的覆盖、网速和通话连续性都相对于拜访网络的5G信号要好，不必使终端设备漫游到拜访网络上。
示例性地，核心网设备可以根据上述信息中的(1)～(4)判断终端设备是否支持异网漫游。当终端设备支持VoNR、支持承载异网漫游的频段、支持异网漫游后拜访网络和归属网络之间的切片映射、且支持异网漫游后拜访网络的快速紧急呼叫策略时，终端设备支持异网漫游；当终端设备不支持(1)～(4)中的任一项时，终端设备不支持异网漫游。
应理解，上述快速紧急呼叫策略具体可以为在拜访网络下直接以普通呼叫的流程 发起紧急呼叫。
示例性地，核心网设备可以根据上述信息中的(1)～(5)判断终端设备是否支持异网漫游。当终端设备支持VoNR、支持承载异网漫游的频段、支持异网漫游后拜访网络和归属网络之间的切片映射、支持异网漫游后拜访网络的快速紧急呼叫策略、且终端设备的归属网络不是预设网络时，终端设备支持异网漫游；当终端设备不支持(1)～(5)中的任一项、或者终端设备的归属网络是预设网络时，终端设备不支持异网漫游。
在本申请实施例中，信息(1)～(5)可以任意组合，由核心网设备根据组合后的信息进行判断，上述示例仅以其中一些可能的情况进行了说明，其他情况类似，此处不再一一列出。
在另一种可能的实现方式中，核心网能力信息包括第二指示信息，上述S201，终端设备确定第二指示信息，包括：
终端设备根据下列信息中的至少一个，判断终端设备是否支持异网漫游：
(1)终端设备是否支持VoNR；
(2)终端设备是否支持承载异网漫游的频段；
(3)终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
(4)终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
(5)终端设备的归属网络是否为预设网络。
终端设备判断终端设备是否支持异网漫游的方法与核心网设备判断终端设备是否支持异网漫游的方法相同，为避免重复，此处不再赘述。
作为一个可选的实施例，上述第一指示信息或第二指示信息为核心网能力信息中的空闲比特。
示例性地，当核心网能力信息中的空闲比特为第一值时，第一指示信息指示终端设备支持VoNR，或者，第二指示信息指示终端设备支持异网漫游；当核心网能力信息中的空闲比特为第二值时，第一指示信息指示终端设备不支持VoNR，或者，第二指示信息指示终端设备不支持异网漫游。示例性地，上述空闲比特可以为1比特，第一值为1，第二值为0，或者，第一值为0，第二值为1，本申请实施例对此不作限定。
下面结合表一给出核心网能力信息的各个字段的具体含义。
表一
在表一中，选定一个空闲比特位的字段，用于携带上述第一指示信息或第二指示信息，当该字段的比特为0时，终端设备不支持VoNR或不支持异网漫游；当该字段的比特的字段为1时，终端设备支持VoNR或支持异网漫游。
作为一个可选的实施例，在终端设备支持异网漫游的情况下，终端设备开启对异网漫游频段的搜网，和/或，接入EPLMN列表中包括的网络标识所对应的拜访网络；或者，在终端设备不支持异网漫游的情况下，终端设备关闭对异网漫游频段的搜网，和/或，禁止接入EPLMN列表中包括的网络标识所对应的拜访网络。
这里的异网漫游的频段例如可以为700M的n28频段，由当前网络部署决定。这里的EPLMN列表中可以包括至少一个拜访网络的网络标识。
假设终端设备不支持异网漫游，但核心网设备为终端设备下发了EPLMN列表，终端设备可以禁止接入该EPLMN列表中包括的网络标识所对应的拜访网络，即终端设备不驻留在该EPLMN列表中包括的网络标识所对应的拜访网络。
在本申请实施例中，在终端设备不支持异网漫游的情况下，无论核心网设备是否为该终端设备下发EPLMN列表，终端设备可以关闭对异网漫游频段的搜网，和/或，禁止接入EPLMN列表中包括的网络标识所对应的拜访网络，确保终端设备不会漫游到拜访网络，且节省了终端设备的能耗。
下面以上述信息(1)和(5)组合，判断终端设备是否支持异网漫游为例，对本申请实施例进行说明。
图3是本申请实施例提供的另一种基于异网漫游的接入方法300的示意性流程图。该方法300可以应用于上述通信系统100中，由终端设备执行。该方法300包括下列步骤：
S301，判断终端设备是否支持VoNR。
S302，当终端设备支持VoNR时，判断终端设备的归属网络是否为预设网络。
S303，在终端设备的归属网络是预设网络的情况下，确定终端设备不支持异网漫游，终端设备关闭对异网漫游频段的搜网，和/或，禁止接入EPLMN列表中包括的网络标识所对应的拜访网络。或者，当终端设备不支持VoNR时，确定终端设备不支持异网漫游，终端设备关闭对异网漫游频段的搜网，和/或，禁止接入EPLMN列表中包括的网络标识所对应的拜访网络。
S304，在终端设备的归属网络不是预设网络的情况下，确定终端设备支持异网漫游，终端设备开启对异网漫游频段的搜网，和/或，接入EPLMN列表中包括的网络标识所对应的拜访网络。
应理解，上述S301和S302的执行没有先后顺序，图3所示的方法300仅仅作为一个示例先判断终端设备是否支持VoNR，在终端设备支持VoNR的情况下，再判断终端设备的归属网络是否为预设网络，在另一种可能的实现方式中，也可以先判断终端设备的归属网络是否为预设网络，在终端设备的归属网络不是预设网络的情况下，再判断终端设备是否支持VoNR，本申请实施例对此不作限定。
图4是本申请实施例提供的另一种终端设备的接入方法400的示意性流程图。该方法可以应用于上述通信系统100中。该方法400包括下列步骤：
S401，核心网设备向接入网设备发送无线能力查询请求，无线能力查询请求用于 请求查询终端设备的无线能力。对应地，接入网设备接收来自核心网设备的无线能力查询请求。
应理解，终端设备的能力信息包括无线能力信息和核心网能力信息，其中，无线能力信息可以通过无线资源控制(radio resource control，RRC)信令上报，核心网能力信息可以通过NAS信令上报。无线能力信息中包括了用于指示终端设备是否支持VoNR或是否支持异网漫游的信息，但核心网设备无法解析，需要向接入网设备发送无线能力查询请求。
S402，接入网设备基于上述无线能力查询请求，向核心网设备发送无线能力查询响应，该无线能力查询响应包括第一指示信息或第二指示信息，第一指示信息用于指示终端设备是否支持VoNR，第二指示信息用于指示终端设备是否支持异网漫游。对应地，核心网设备接收来自接入网设备的无线能力查询响应。
应理解，当接入网设备接收来自核心网设备的无线能力查询请求之后，接入网设备对终端设备的无线能力信息进行解析，获得上述第一指示信息或第二指示信息，向核心网设备发送无线能力查询响应。
S403，核心网设备基于无线能力查询响应，判断终端设备是否支持异网漫游。
在无线能力查询响应包括第一指示信息(即指示终端设备是否支持VoNR)的情况下，核心网设备基于该第一指示信息以及其他信息进行判断。在无线能力查询响应包括第二指示信息(即指示终端设备是否支持异网漫游)的情况下，核心网设备可以基于该第二指示信息直接判断出终端设备是否支持异网漫游。
S404，在终端设备支持异网漫游的情况下，核心网设备向终端设备发送EPLMN列表。
进一步地，终端设备接收来自核心网设备的EPLMN列表，终端设备可以按照EPLMN列表中的PLMN网络进行搜网，从而漫游到拜访网络上。
在本申请实施例中，核心网设备只有在终端设备支持异网漫游的情况下，才会向终端设备发送EPLMN列表，若终端设备不支持异网漫游，核心网设备不会向终端设备发送EPLMN列表，终端设备依旧驻留在归属网络。这样，对于不支持VoNR或异网漫游的终端设备而言，若归属网络存在4G信号，该终端设备可以继续使用归属网络下的4G信号进行语音通话，对于支持异网漫游的终端设备而言，该终端设备可以漫游到拜访网络，使用拜访网络下的5G信号进行语音通话，获得更高质量、更高速率的语音业务体验。因此，本申请实施例的基于异网漫游的接入方法，有利于保障终端设备在异网漫游场景下的语音通话，从而提升用户体验。
下面，按照上述无线能力查询响应的具体内容，分两种可能的实现方式进行解释说明。
在一种可能的实现方式中，无线能力信息包括第一指示信息，无线能力查询响应包括第一指示信息，上述S403，核心网设备基于无线能力查询响应，判断终端设备是否支持异网漫游，包括：核心网设备根据下列信息中的至少一个，判断终端设备是否支持异网漫游：
(1)第一指示信息，即终端设备是否支持VoNR；
(2)终端设备是否支持承载异网漫游的频段；
(3)终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
(4)终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
(5)终端设备的归属网络是否为预设网络。
核心网设备根据上述信息中的至少一个，判断终端设备是否支持异网漫游的方法在前文已描述，此处不再赘述。
在另一种可能的实现方式中，无线能力信息包括第一指示信息，无线能力查询响应包括第二指示信息，上述方法400还包括：
接入网设备根据下列信息中的至少一个，确定第二指示信息(即确定终端设备是否支持异网漫游)：
(1)终端设备是否支持VoNR；
(2)终端设备是否支持承载异网漫游的频段；
(3)终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
(4)终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
(5)终端设备的归属网络是否为预设网络。
接入网设备确定终端设备是否支持异网漫游的方法与核心网设备判断终端设备是否支持异网漫游的方法相同，此处不再赘述。
在又一种可能的实现方式中，无线能力信息包括第二指示信息，上述方法400还包括：终端设备根据下列信息中的至少一个，确定第二指示信息(即确定终端设备是否支持异网漫游)：
(1)终端设备是否支持VoNR；
(2)终端设备是否支持承载异网漫游的频段；
(3)终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
(4)终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
(5)终端设备的归属网络是否为预设网络。
终端设备判断终端设备是否支持异网漫游的方法与核心网设备判断终端设备是否支持异网漫游的方法相同，此处不再赘述。
作为一个可选的实施例，上述第一指示信息或第二指示信息位于无线能力查询响应中的新增字段。
下面结合表二给出无线能力查询响应的各个字段的具体含义。
表二

应理解，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
上文结合图2至图4，详细描述了本申请实施例的基于异网漫游的接入方法，下面将结合图5至图7，详细描述本申请实施例的基于异网漫游的接入装置。
图5示出了本申请实施例提供的基于异网漫游的接入装置500，该装置500包括处理模块501和收发模块502。
在一种可能的实现方式中，该装置500用于实现上述方法200中终端设备对应的步骤。
处理模块501，用于确定第一指示信息或第二指示信息，第一指示信息用于指示装置500是否支持新无线的语音服务VoNR，第二指示信息用于指示装置500是否支持异网漫游；收发模块502，用于向核心网设备发送核心网能力信息，核心网能力信息包括第一指示信息或第二指示信息。
可选地，第一指示信息或第二指示信息为核心网能力信息中的空闲比特。
可选地，核心网能力信息包括第二指示信息；处理模块501具体用于：根据下列信息中的至少一个，判断装置500是否支持异网漫游：
装置500是否支持VoNR；
装置500是否支持承载异网漫游的频段；
装置500是否支持异网漫游后拜访网络和归属网络之间的切片映射；
装置500是否支持异网漫游后拜访网络的快速紧急呼叫策略；
装置500的归属网络是否为预设网络。
可选地，收发模块502还用于：接收来自核心网设备的等效公共陆地移动网络EPLMN列表。
可选地，处理模块501还用于：在上述装置500支持异网漫游的情况下，开启对异网漫游频段的搜网，和/或，接入EPLMN列表中包括的网络标识所对应的拜访网络；或者，在上述装置500不支持异网漫游的情况下，关闭对异网漫游频段的搜网，和/或，禁止接入EPLMN列表中包括的网络标识所对应的拜访网络。
在另一种可能的实现方式中，该装置500用于实现上述方法200中核心网设备对应的步骤。
收发模块502，用于接收来自终端设备的核心网能力信息，核心网能力信息包括第一指示信息或第二指示信息，第一指示信息用于指示终端设备是否支持新无线的语音服务VoNR，第二指示信息用于指示终端设备是否支持异网漫游；处理模块501，用于基于核心网能力信息，判断终端设备是否支持异网漫游；以及，在终端设备支持异网漫游的情况下，向终端设备发送等效公共陆地移动网络EPLMN列表。
可选地，核心网能力信息包括第一指示信息；处理模块501用于：根据第一指示 信息以及下列信息中的至少一个，判断终端设备是否支持异网漫游：
终端设备是否支持承载异网漫游的频段；
终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
终端设备的归属网络是否为预设网络。
可选地，第一指示信息或第二指示信息为核心网能力信息中的空闲比特。
在又一种可能的实现方式中，该装置500用于实现上述方法400中核心网设备对应的步骤。
收发模块502，用于向接入网设备发送无线能力查询请求，无线能力查询请求用于请求查询终端设备的无线能力；以及，接收来自接入网设备的无线能力查询响应，无线能力查询响应包括第一指示信息或第二指示信息，第一指示信息用于指示终端设备是否支持新无线的语音服务VoNR，第二指示信息用于指示终端设备是否支持异网漫游；处理模块501，用于基于无线能力查询响应，判断终端设备是否支持异网漫游；收发模块502还用于，在终端设备支持异网漫游的情况下，向终端设备发送等效公共陆地移动网络EPLMN列表。
可选地，无线能力查询响应包括第一指示信息；处理模块501用于：根据第一指示信息以及下列信息中的至少一个，判断终端设备是否支持异网漫游：
终端设备是否支持承载异网漫游的频段；
终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
终端设备的归属网络是否为预设网络。
应理解，这里的装置500以功能模块的形式体现。这里的术语“模块”可以指应用特有集成电路(application specific integrated circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中，本领域技术人员可以理解，装置500可以具体为上述实施例中的终端设备或核心网设备，装置500可以用于执行上述方法实施例中与终端设备或核心网设备对应的各个流程和/或步骤，为避免重复，在此不再赘述。
上述装置500具有实现上述方法中终端设备或核心网设备执行的相应步骤的功能：上述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。例如，上述收发模块502可以包括发送模块和接收模块，该发送模块可以用于实现上述收发模块对应的用于执行发送动作的各个步骤和/或流程，该接收模块可以用于实现上述收发模块对应的用于执行接收动作的各个步骤和/或流程。该发送模块可以由发射器替代，该接收模块可以由接收器替代，分别执行各个方法实施例中的收发操作以及相关的处理操作。
图6示出了本申请实施例提供的另一种基于异网漫游的接入装置600，该接入装置600包括接收模块601和发送模块602。
在一种可能的实现方式中，该装置600用于实现上述方法400中接入网设备对应的步骤。
接收模块601，用于接收来自核心网设备的无线能力查询请求，无线能力查询请求用于请求查询终端设备的无线能力；发送模块602，基于无线能力查询请求，向核心网设备发送无线能力查询响应，无线能力查询响应包括第一指示信息或第二指示信息，第一指示信息用于指示终端设备是否支持新无线的语音服务VoNR，第二指示信息用于指示终端设备是否支持异网漫游。
可选地，接收模块601还用于：接收来自终端设备的无线能力信息，无线能力信息包括第一指示信息或第二指示信息。
可选地，无线能力信息包括第一指示信息，无线能力查询响应包括第二指示信息；该装置600还包括：处理模块，用于根据第一指示信息以及下列信息中的至少一个，确定第二指示信息：
终端设备是否支持承载异网漫游的频段；
终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
终端设备的归属网络是否为预设网络。
应理解，这里的装置600以功能模块的形式体现。这里的术语“模块”可以指应用特有集成电路(application specific integrated circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中，本领域技术人员可以理解，装置600可以具体为上述实施例中的接入网设备，装置600可以用于执行上述方法实施例中与接入网设备对应的各个流程和/或步骤，为避免重复，在此不再赘述。
上述装置600具有实现上述方法中接入网设备执行的相应步骤的功能：上述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。例如，发送模块602可以用于执行发送动作的各个步骤和/或流程，该接收模块601可以用于执行接收动作的各个步骤和/或流程。该发送模块602可以由发射器替代，该接收模块601可以由接收器替代，分别执行各个方法实施例中的收发操作以及相关的处理操作。
在本申请的实施例，图5和图6中的基于异网漫游的接入装置500和600也可以是芯片或者芯片系统，例如：片上系统(system on chip，SOC)。对应的，收发模块502、接收模块601和发送模块602可以是该芯片的收发电路，在此不做限定。
图7示出了本申请实施例提供的另一种基于异网漫游的接入装置700，该接入装置700包括处理器701、收发器702和存储器703。其中，处理器701、收发器702和存储器703通过内部连接通路相互通信，该存储器703用于存储命令，该处理器701用于执行该存储器703存储的指令，以控制该收发702发送信号和/或接收信号。
应理解，接入装置700可以具体为上述实施例中的终端设备、接入网设备或核心网设备中的任一个，并且可以用于执行上述方法实施例中与终端设备、接入网设备和核心网设备中的任一个对应的各个步骤和/或流程。可选地，该存储器703可以包括只读存储器和随机存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如，存储器还可以存储设备类型的信息。该处理器701可 以用于执行存储器中存储的指令，并且当该处理器701执行存储器中存储的指令时，该处理器701用于执行上述与该终端设备、接入网设备和核心网设备中的任一个对应的方法实施例的各个步骤和/或流程。该收发器702可以包括发射器和接收器，该发射器可以用于实现上述收发器对应的用于执行发送动作的各个步骤和/或流程，该接收器可以用于实现上述收发器对应的用于执行接收动作的各个步骤和/或流程。
应理解，在本申请实施例中，该处理器可以是中央处理单元(central processing unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器执行存储器中的指令，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
本申请还提供了一种计算机可读存储介质，该计算机可读存储介质用于存储计算机程序，该计算机程序用于实现上述实施例中与终端设备、接入网设备和核心网设备中任一个对应的方法。
本申请还提供了一种计算机程序产品，该计算机程序产品包括计算机程序(也可以称为代码，或指令)，当该计算机程序在计算机上运行时，该计算机可以执行上述实施例中与终端设备、接入网设备和核心网设备中任一个对应的方法。
本申请还提供了一种基于异网漫游的通信系统，包括上述终端设备、接入网设备或核心网设备。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的模块及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
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，上述描述的系统、装置和模块的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请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，例如多个模块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，装置或模块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模块可以是或者也可以不是物理上分开的，作为模块显示的部件可以是或者也可以不是物理模块，即可以位于一个地方，或者也可以分布到 多个网络模块上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能模块可以集成在一个处理模块中，也可以是各个模块单独物理存在，也可以两个或两个以上模块集成在一个模块中。
所述功能如果以软件功能模块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，本申请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)执行本申请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：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、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，但本申请实施例的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请实施例揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请实施例的保护范围之内。因此，本申请实施例的保护范围应所述以权利要求的保护范围为准。

Claims (31)

  1. 一种基于异网漫游的接入方法，其特征在于，包括：
    终端设备确定第一指示信息或第二指示信息，所述第一指示信息用于指示所述终端设备是否支持新无线的语音服务VoNR，所述第二指示信息用于指示所述终端设备是否支持异网漫游；
    所述终端设备向核心网设备发送核心网能力信息，所述核心网能力信息包括所述第一指示信息或所述第二指示信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一指示信息或所述第二指示信息为所述核心网能力信息中的空闲比特。
  3. 根据权利要求1所述的方法，其特征在于，所述核心网能力信息包括所述第二指示信息；
    所述终端设备确定所述第二指示信息，包括：
    所述终端设备根据下列信息中的至少一个，判断所述终端设备是否支持异网漫游：
    所述终端设备是否支持VoNR；
    所述终端设备是否支持承载异网漫游的频段；
    所述终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
    所述终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
    所述终端设备的归属网络是否为预设网络。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收来自所述核心网设备的等效公共陆地移动网络EPLMN列表。
  5. 根据权利要求1至3中任一项所述的方法，其特征在于，所述方法还包括：
    在所述终端设备支持异网漫游的情况下，所述终端设备开启对异网漫游频段的搜网，和/或，接入EPLMN列表中包括的网络标识所对应的拜访网络；或者，
    在所述终端设备不支持异网漫游的情况下，所述终端设备关闭对异网漫游频段的搜网，和/或，禁止接入EPLMN列表中包括的网络标识所对应的拜访网络。
  6. 一种基于异网漫游的接入方法，其特征在于，包括：
    核心网设备接收来自终端设备的核心网能力信息，所述核心网能力信息包括第一指示信息或第二指示信息，所述第一指示信息用于指示所述终端设备是否支持新无线的语音服务VoNR，所述第二指示信息用于指示所述终端设备是否支持异网漫游；
    所述核心网设备基于所述核心网能力信息，判断所述终端设备是否支持异网漫游；
    在所述终端设备支持异网漫游的情况下，所述核心网设备向所述终端设备发送等效公共陆地移动网络EPLMN列表。
  7. 根据权利要求6所述的方法，其特征在于，所述核心网能力信息包括所述第一指示信息；
    所述核心网设备基于所述核心网能力信息，判断所述终端设备是否支持异网漫游，包括：
    所述核心网设备根据所述第一指示信息以及下列信息中的至少一个，判断所述终端设备是否支持异网漫游：
    所述终端设备是否支持承载异网漫游的频段；
    所述终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
    所述终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
    所述终端设备的归属网络是否为预设网络。
  8. 根据权利要求6或7所述的方法，其特征在于，所述第一指示信息或所述第二指示信息为所述核心网能力信息中的空闲比特。
  9. 一种基于异网漫游的接入方法，其特征在于，包括：
    接入网设备接收来自核心网设备的无线能力查询请求，所述无线能力查询请求用于请求查询终端设备的无线能力；
    所述接入网设备基于所述无线能力查询请求，向所述核心网设备发送无线能力查询响应，所述无线能力查询响应包括第一指示信息或第二指示信息，所述第一指示信息用于指示所述终端设备是否支持新无线的语音服务VoNR，所述第二指示信息用于指示所述终端设备是否支持异网漫游。
  10. 根据权利要求9所述的方法，其特征在于，在所述接入网设备基于所述无线能力查询请求，向所述核心网设备发送无线能力查询响应之前，所述方法还包括：
    所述接入网设备接收来自所述终端设备的无线能力信息，所述无线能力信息包括所述第一指示信息或所述第二指示信息。
  11. 根据权利要求10所述的方法，其特征在于，所述无线能力信息包括所述第一指示信息，所述无线能力查询响应包括所述第二指示信息；
    所述方法还包括：
    所述接入网设备根据所述第一指示信息以及下列信息中的至少一个，确定所述第二指示信息：
    所述终端设备是否支持承载异网漫游的频段；
    所述终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
    所述终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
    所述终端设备的归属网络是否为预设网络。
  12. 一种基于异网漫游的接入方法，其特征在于，包括：
    核心网设备向接入网设备发送无线能力查询请求，所述无线能力查询请求用于请求查询终端设备的无线能力；
    所述核心网设备接收来自所述接入网设备的无线能力查询响应，所述无线能力查询响应包括第一指示信息或第二指示信息，所述第一指示信息用于指示所述终端设备是否支持新无线的语音服务VoNR，所述第二指示信息用于指示所述终端设备是否支持异网漫游；
    所述核心网设备基于所述无线能力查询响应，判断所述终端设备是否支持异网漫游；
    在所述终端设备支持异网漫游的情况下，所述核心网设备向所述终端设备发送等效公共陆地移动网络EPLMN列表。
  13. 根据权利要求12所述的方法，其特征在于，所述无线能力查询响应包括所述第一指示信息；
    所述核心网设备基于所述无线能力查询响应，判断所述终端设备是否支持异网漫游，包括：
    所述核心网设备根据所述第一指示信息以及下列信息中的至少一个，判断所述终端设备是否支持异网漫游：
    所述终端设备是否支持承载异网漫游的频段；
    所述终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
    所述终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
    所述终端设备的归属网络是否为预设网络。
  14. 一种基于异网漫游的接入装置，其特征在于，包括：
    处理模块，用于确定第一指示信息或第二指示信息，所述第一指示信息用于指示所述装置是否支持新无线的语音服务VoNR，所述第二指示信息用于指示所述装置是否支持异网漫游；
    收发模块，用于向核心网设备发送核心网能力信息，所述核心网能力信息包括所述第一指示信息或所述第二指示信息。
  15. 根据权利要求14所述的装置，其特征在于，所述第一指示信息或所述第二指示信息为所述核心网能力信息中的空闲比特。
  16. 根据权利要求14所述的装置，其特征在于，所述核心网能力信息包括所述第二指示信息；
    所述处理模块具体用于：
    根据下列信息中的至少一个，判断所述装置是否支持异网漫游：
    所述装置是否支持VoNR；
    所述装置是否支持承载异网漫游的频段；
    所述装置是否支持异网漫游后拜访网络和归属网络之间的切片映射；
    所述装置是否支持异网漫游后拜访网络的快速紧急呼叫策略；
    所述装置的归属网络是否为预设网络。
  17. 根据权利要求14至16中任一项所述的装置，其特征在于，所述收发模块还用于：接收来自所述核心网设备的等效公共陆地移动网络EPLMN列表。
  18. 根据权利要求14至16中任一项所述的装置，其特征在于，所述处理模块还用于：在所述装置支持异网漫游的情况下，开启对异网漫游频段的搜网，和/或，接入EPLMN列表中包括的网络标识所对应的拜访网络；或者，
    在所述装置不支持异网漫游的情况下，关闭对异网漫游频段的搜网，和/或，禁止接入EPLMN列表中包括的网络标识所对应的拜访网络。
  19. 一种基于异网漫游的接入装置，其特征在于，包括：
    收发模块，用于接收来自终端设备的核心网能力信息，所述核心网能力信息包括第一指示信息或第二指示信息，所述第一指示信息用于指示所述终端设备是否支持新无线的语音服务VoNR，所述第二指示信息用于指示所述终端设备是否支持异网漫游；
    处理模块，用于基于所述核心网能力信息，判断所述终端设备是否支持异网漫游；以及，在所述终端设备支持异网漫游的情况下，向所述终端设备发送等效公共陆地移动网络EPLMN列表。
  20. 根据权利要求19所述的装置，其特征在于，所述核心网能力信息包括所述第一指示信息；
    所述处理模块用于：
    根据所述第一指示信息以及下列信息中的至少一个，判断所述终端设备是否支持异网漫游：
    所述终端设备是否支持承载异网漫游的频段；
    所述终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
    所述终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
    所述终端设备的归属网络是否为预设网络。
  21. 根据权利要求19或20所述的装置，其特征在于，所述第一指示信息或所述第二指示信息为所述核心网能力信息中的空闲比特。
  22. 一种基于异网漫游的接入装置，其特征在于，包括：
    接收模块，用于接收来自核心网设备的无线能力查询请求，所述无线能力查询请求用于请求查询终端设备的无线能力；
    发送模块，基于所述无线能力查询请求，向所述核心网设备发送无线能力查询响应，所述无线能力查询响应包括第一指示信息或第二指示信息，所述第一指示信息用于指示所述终端设备是否支持新无线的语音服务VoNR，所述第二指示信息用于指示所述终端设备是否支持异网漫游。
  23. 根据权利要求22所述的装置，其特征在于，所述接收模块还用于：
    接收来自所述终端设备的无线能力信息，所述无线能力信息包括所述第一指示信息或所述第二指示信息。
  24. 根据权利要求23所述的装置，其特征在于，所述无线能力信息包括所述第一指示信息，所述无线能力查询响应包括所述第二指示信息；
    所述装置还包括：
    处理模块，用于根据所述第一指示信息以及下列信息中的至少一个，确定所述第二指示信息：
    所述终端设备是否支持承载异网漫游的频段；
    所述终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
    所述终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
    所述终端设备的归属网络是否为预设网络。
  25. 一种基于异网漫游的接入装置，其特征在于，包括：
    收发模块，用于向接入网设备发送无线能力查询请求，所述无线能力查询请求用于请求查询终端设备的无线能力；以及，接收来自所述接入网设备的无线能力查询响应，所述无线能力查询响应包括第一指示信息或第二指示信息，所述第一指示信息用于指示所述终端设备是否支持新无线的语音服务VoNR，所述第二指示信息用于指示所述终端设备是否支持异网漫游；
    处理模块，用于基于所述无线能力查询响应，判断所述终端设备是否支持异网漫游；
    所述收发模块还用于：在所述终端设备支持异网漫游的情况下，向所述终端设备 发送等效公共陆地移动网络EPLMN列表。
  26. 根据权利要求25所述的装置，其特征在于，所述无线能力查询响应包括所述第一指示信息；
    所述处理模块用于：
    根据所述第一指示信息以及下列信息中的至少一个，判断所述终端设备是否支持异网漫游：
    所述终端设备是否支持承载异网漫游的频段；
    所述终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
    所述终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
    所述终端设备的归属网络是否为预设网络。
  27. 一种基于异网漫游的接入装置，其特征在于，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储计算机程序，当所述处理器调用所述计算机程序时，使得所述装置执行如权利要求1至13中任一项所述的方法。
  28. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序包括用于实现如权利要求1至13中任一项所述的方法的指令。
  29. 一种计算机程序产品，其特征在于，所述计算机程序产品中包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得所述计算机实现如权利要求1至13中任一项所述的方法。
  30. 一种基于异网漫游的接入方法，其特征在于，包括：
    终端设备确定第一指示信息和第二指示信息，所述第一指示信息用于指示所述终端设备是否支持新无线的语音服务VoNR，所述第二指示信息用于指示所述终端设备是否支持异网漫游；
    所述终端设备向核心网设备发送核心网能力信息，所述核心网能力信息包括所述第一指示信息或所述第二指示信息；
    所述终端设备接收来自所述核心网设备的等效公共陆地移动网络EPLMN列表；
    所述终端设备确定所述第二指示信息，包括：
    所述终端设备根据所述第一指示信息以及下列信息中的至少一个，判断所述终端设备是否支持异网漫游：
    所述终端设备是否支持承载异网漫游的频段；
    所述终端设备是否支持异网漫游后拜访网络和归属网络之间的切片映射；
    所述终端设备是否支持异网漫游后拜访网络的快速紧急呼叫策略；
    所述终端设备的归属网络是否为预设网络；
    在所述终端设备支持异网漫游的情况下，所述终端设备开启对异网漫游频段的搜网，和/或，接入EPLMN列表中包括的网络标识所对应的拜访网络；或者，
    在所述终端设备不支持异网漫游的情况下，所述终端设备关闭对异网漫游频段的搜网，和/或，禁止接入EPLMN列表中包括的网络标识所对应的拜访网络。
  31. 根据权利要求30所述的方法，其特征在于，所述第一指示信息或所述第二指示信息为所述核心网能力信息中的空闲比特。
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