WO2023142632A1 - Procédé de communication et appareil de communication - Google Patents

Procédé de communication et appareil de communication Download PDF

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Publication number
WO2023142632A1
WO2023142632A1 PCT/CN2022/133622 CN2022133622W WO2023142632A1 WO 2023142632 A1 WO2023142632 A1 WO 2023142632A1 CN 2022133622 W CN2022133622 W CN 2022133622W WO 2023142632 A1 WO2023142632 A1 WO 2023142632A1
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WIPO (PCT)
Prior art keywords
network element
network
slice
land mobile
public land
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PCT/CN2022/133622
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English (en)
Chinese (zh)
Inventor
林玮健
杨静
何龙
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华为技术有限公司
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Publication of WO2023142632A1 publication Critical patent/WO2023142632A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • 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

Definitions

  • the embodiments of the present application relate to the technical field of communication, and more specifically, to a communication method and a communication device.
  • the network element for network slice selection can provide slice selection service and slice availability service.
  • the slice selection service is a mobility management network element that provides the slice that supports the request to the terminal equipment.
  • the slice selective service is to provide network function (network function, NF) network elements with mobility management network elements based on tracking area (tracking area, TA) slice availability.
  • each roaming user needs to request the network slice selection network element for the slice mapping relationship between the home public land mobile network and the associated visited public land mobile network, which has an impact on the network slice selection network element.
  • Embodiments of the present application provide a communication method and a communication device, and the method can reduce the impact on network element selection for network slicing.
  • a communication method is provided, and the communication method may be executed by a mobility management network element, or may also be executed by a chip or a circuit used for a mobility management network element, which is not limited in this application, for convenience The description is described below by taking the implementation by the mobility management network element as an example.
  • the method includes: the mobility management network element sends a request message to the network element with network slice selection function, the request message is used to request slice information, and the slice information is used to indicate: the slice supported by the network element, and/or, The slice mapping relationship between the home public land mobile network supported by the network element and the visited public land mobile network; the mobility management network element receives the response message sent by the network slice selection function network element for the request message , the response message is used to indicate the slice information.
  • the mobility management network element can actively request network element-level slice information from the network slice selection function network element, that is, the slice supported by the network element and/or the information of the home public land mobile network and the visited public land mobile network supported by the network element slice mapping. In this way, the mobility management network element does not need to request the network slice selection function network element every time slice information is needed, thereby reducing the impact on the network slice selection network element.
  • the request message includes: the identifier of the network element set, and/or, the home public land mobile network and the visited public land mobile network supported by the network element set The corresponding relationship of the land mobile network; the slice information includes: the slice supported by the network element set, and/or the slice of the home public land mobile network and the visited public land mobile network supported by the network element set A mapping relationship; wherein, the mobility management network element belongs to a network element in the network element set.
  • the request message is further used to indicate a uniform resource identifier associated with the mobility management network element, and the uniform resource identifier is used in the After the slice information is updated, the updated slice information is sent to the mobility management network element.
  • the uniform resource identifier associated with the mobility management network element is notified to the network slice selection function network element.
  • the network slice selection function network element can notify the mobility management network element of the updated slice information in time, preventing the mobility management network element from being unable to perceive the updated information. slice information.
  • the slice information can take effect quickly and in a short time, and it does not need to rely on manual operation to keep the slice information configured on the mobility management network element consistent with the slice information configured on the network slice selection function network element.
  • the method further includes: the mobility management network element receiving the updated slice information sent from the network slice selection function network element.
  • the method further includes: the mobility management network element storing the slice information in the mobility management network element.
  • the mobility management network element saves the slice information in the mobility management network element, so that the subsequent mobility management network element can directly provide corresponding slice information for the roaming terminal device according to the slice information locally stored in the mobility management network element.
  • the method further includes: the mobility management network element receives registration request information sent from a roaming terminal device, and the registration request information is used to request registration to network: the mobility management network element determines a target mapping relationship according to the slice information, and the target mapping relationship includes a slice mapping relationship between the home public land mobile network of the roaming terminal device and the visited public land mobile network; The mobility management network element sends registration acceptance information to the roaming terminal device, where the registration acceptance information is used to indicate the target mapping relationship.
  • the mobility management network element can provide the roaming terminal device with the slice mapping relationship between the home public land mobile network of the roaming terminal device and the visited public land mobile network, so that the roaming terminal device can Devices can register to the corresponding network slice.
  • the mobility management network element determines the target mapping relationship according to the slice information, including: the mobility management network element determines the roaming terminal device The slice corresponding to the home public land mobile network and the home public land mobile network of the roaming terminal device; the mobility management network element according to the mapping relationship, the home public land mobile network of the roaming terminal device, the roaming terminal The target mapping relationship is determined by the visited public land mobile network corresponding to the home public land mobile network of the device and the slice corresponding to the home public land mobile network of the roaming terminal device.
  • the registration request information is also used to indicate the identity of the slice corresponding to the public land mobile network to which the roaming terminal device belongs and the public land mobile network to which the roaming terminal device belongs.
  • the identifier of the visited public land mobile network corresponding to the land mobile network, or the registration request information is also used to indicate the identifier of the home public land mobile network of the roaming terminal device, the home public land mobile network of the roaming terminal device.
  • the roaming terminal device can carry the identifier of the slice that it can access and corresponds to the home public land mobile network in the registration request information Inform the mobility management network element.
  • the mobility management network element can register the request information, directly determine the slice corresponding to the home public land mobile network of the roaming terminal device, and then determine the mapping relationship between the home public land mobile network of the roaming terminal device and the visited public land mobile network slice .
  • a communication method is provided, and the communication method may be performed by a network element with a network slice selection function, or may also be performed by a chip or a circuit used for a network element with a network slice selection function, which is not limited in this application.
  • the network element selection function performed by the network slice is taken as an example for description below.
  • the method includes: a network element with network slice selection function receiving a request message sent from a mobility management network element, where the request message is used to request slice information, and the slice information is used to indicate: the slice supported by the network element, and/or Or, the slice mapping relationship between the home public land mobile network supported by the network element and the visited public land mobile network; the network slice selection function network element sends a response message to the request message to the mobility management network element , the response message is used to indicate the slice information.
  • the network element with the network slice selection function sends network element-level slice information to the mobility management network element according to the active request of the mobility management network element, that is, the slice supported by the network element and/or the belonging public land mobile network supported by the network element
  • the slice mapping relationship with the visited public land mobile network is sent to the mobility management network element. In this way, the mobility management network element does not need to request the network slice selection function network element every time slice information is needed, thereby reducing the impact on the network slice selection network element.
  • the request message includes: the identifier of the network element set, and/or, the home public land mobile network and the visited public land mobile network supported by the network element set Correspondence between land mobile networks;
  • the slice information includes: slices supported by the network element set, and/or, the home public land mobile network and the visited public land mobile network supported by the network element set A slice mapping relationship of a mobile network; wherein, the mobility management network element belongs to the network elements in the network element set.
  • the request message is further used to indicate a uniform resource identifier associated with the mobility management network element, and the uniform resource identifier is used in the After the slice information is updated, the updated slice information is sent to the mobility management network element.
  • the method further includes: the network element with the network slice selection function determining that the slice information has been updated; the network element with the network slice selection function according to the unified A resource identifier, sending the updated slice information to the mobility management network element.
  • the uniform resource identifier associated with the mobility management network element is notified to the network slice selection function network element.
  • the network slice selection function network element can notify the mobility management network element of the updated slice information in time, preventing the mobility management network element from being unable to perceive the updated information. slice information.
  • the method further includes: the network element with the network slice selection function acquiring the slice information according to the request message.
  • the method further includes: the network slice selection function network element combining the unobtained home public land mobile network and the visited public land mobile network
  • the slice mapping relationship of the mobile network is configured as a preset slice mapping relationship.
  • the network element with the network slice selection function configures the unobtained slice mapping relationship between the home public land mobile network and the visited public land mobile network as a preset slice mapping relationship, so as to ensure that each home public land mobile network corresponding to each A slice has a slice mapping relationship in each corresponding visited public land mobile network.
  • a communication method is provided, and the communication method may be executed by a mobility management network element, or may also be executed by a chip or a circuit used for a mobility management network element, which is not limited in this application, for convenience The description is described below by taking the implementation by the mobility management network element as an example.
  • the method includes: a mobility management network element sends a request message to a network slice selection function network element, the request message is used to indicate a uniform resource identifier associated with the mobility management network element, and the uniform resource identifier is used After the slice information is updated, the updated slice information is sent to the mobility management network element; the mobility management network element receives the updated slice information sent from the network slice selection function network element.
  • the uniform resource identifier associated with the mobility management network element is notified to the network slice selection function network element.
  • the network slice selection function network element can notify the mobility management network element of the updated slice information in time, preventing the mobility management network element from being unable to perceive the updated information. slice information.
  • the slice information can take effect quickly and in a short time, and it does not need to rely on manual operation to keep the slice information configured on the mobility management network element consistent with the slice information configured on the network slice selection function network element.
  • the slice information is used to indicate: the slice supported by the network element set, and/or the home public land mobile network supported by the network element set The slice mapping relationship between the network and the visited public land mobile network.
  • a communication method is provided, and the communication method may be performed by a network element with a network slice selection function, or may also be performed by a chip or a circuit used for a network element with a network slice selection function, which is not limited in this application.
  • the network element selection function performed by the network slice is taken as an example for description below.
  • the method includes: a network slice selection function network element receives a request message sent from a mobility management network element, the request message is used to indicate a uniform resource identifier associated with the mobility management network element, and the uniform resource identifier The symbol is used to send the updated slice information to the mobility management network element after the slice information is updated; the network slice selection function network element determines that the slice information has been updated; the network slice selection function network element according to The uniform resource identifier sends the updated slice information to the mobility management network element.
  • the uniform resource identifier associated with the mobility management network element is notified to the network slice selection function network element.
  • the network slice selection function network element can notify the mobility management network element of the updated slice information in time, preventing the mobility management network element from being unable to perceive the updated information. slice information.
  • the slice information is used to indicate: the slice supported by the network element set, and/or, the home public land mobile network supported by the network element set The slice mapping relationship between the network and the visited public land mobile network.
  • a communication device may be a mobility management network element, or a chip or a circuit of a mobility management network element, which is not limited in the present application.
  • the communication device may be a mobility management network element, or a chip or a circuit of a mobility management network element, which is not limited in the present application.
  • the following uses a mobility management network element as an example for illustration.
  • the communication device includes: a transceiver unit, configured to send a request message to a network element with a network slice selection function, where the request message is used to request slice information, and the slice information is used to indicate: the slice supported by the network element, and/or , the slice mapping relationship between the home public land mobile network supported by the network element and the visited public land mobile network; the transceiver unit is further configured to receive the request message sent from the network slice selection function network element A response message, where the response message is used to indicate the slice information.
  • the request message includes: an identifier of a network element set, and/or, the home public land mobile network supported by the communication device and the received The corresponding relationship of the visited public land mobile network;
  • the slice information includes: the slice supported by the network element set, and/or, the home public land mobile network supported by the communication device and the visited A slice mapping relationship of a public land mobile network; wherein, the communication device belongs to a network element in the set of network elements.
  • the request message is further used to indicate a uniform resource identifier associated with the communication device, and the uniform resource identifier is used when updating the slice information Then send the updated slice information to the communication device.
  • the transceiving unit is further configured to receive the updated slice information sent from the network element with the network slice selection function.
  • the communication device further includes: a processing unit configured to save the slice information in the communication device.
  • the transceiving unit is further configured to receive registration request information sent from a roaming terminal device, where the registration request information is used to request registration to the network; the processing The unit is further configured to determine a target mapping relationship according to the slice information, and the target mapping relationship includes a slice mapping relationship between the home public land mobile network of the roaming terminal device and the visited public land mobile network; the transceiver unit , further configured to send registration acceptance information to the roaming terminal device, where the registration acceptance information is used to indicate the target mapping relationship.
  • the processing unit is further specifically configured to: determine the slice corresponding to the public land mobile network to which the roaming terminal device belongs and the public land mobile network to which the roaming terminal device belongs. land mobile network; according to the mapping relationship, the home public land mobile network of the roaming terminal device, the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device, and the Belonging to the slice corresponding to the public land mobile network, and determining the target mapping relationship.
  • the registration request information is also used to indicate the identity of the slice corresponding to the home public land mobile network of the roaming terminal device and the home public land mobile network of the roaming terminal device.
  • the ID of the visited public land mobile network corresponding to the network, or the registration request information is also used to indicate the ID of the home public land mobile network of the roaming terminal device, the home public land mobile network corresponding to the roaming terminal device.
  • a communication device in a sixth aspect, can select a functional network element by network slicing, or select a chip or circuit of a functional network element by network slicing, which is not limited in this application.
  • the communication device can select a functional network element by network slicing, or select a chip or circuit of a functional network element by network slicing, which is not limited in this application.
  • the following uses network slicing to select a functional network element as an example for illustration.
  • the communication device includes: a transceiver unit, configured to receive a request message sent from a mobility management network element, where the request message is used to request slice information, and the slice information is used to indicate: the slice supported by the network element, and/or Or, the slice mapping relationship between the home public land mobile network supported by the network element and the visited public land mobile network; the transceiver unit is further configured to send a response message to the request message to the mobility management network element , the response message is used to indicate the slice information.
  • the request message includes: the identifier of the network element set, and/or, the home public land mobile network and the visited public land mobile network supported by the network element set The corresponding relationship of the land mobile network;
  • the slice information includes: the slice supported by the network element set, and/or, the home public land mobile network and the visited public land mobile network supported by the network element set A slice mapping relationship of a mobile network; wherein, the mobility management network element belongs to a network element in the network element set;
  • the request message is further used to indicate a uniform resource identifier associated with the mobility management network element, and the uniform resource identifier is used in the After the slice information is updated, the updated slice information is sent to the mobility management network element.
  • the communication device further includes: a processing unit, configured to determine that the slice information has been updated; symbol, and send the updated slice information to the mobility management network element.
  • the processing unit is further configured to acquire the slice information according to the request message.
  • the processing unit is further configured to map the unacquired slice mapping relationship between the home public land mobile network and the visited public land mobile network Configured as a preset slice mapping relationship.
  • a communication device may be a mobility management network element, or a chip or a circuit of a mobility management network element, which is not limited in the present application.
  • the communication device may be a mobility management network element, or a chip or a circuit of a mobility management network element, which is not limited in the present application.
  • the following uses a mobility management network element as an example for illustration.
  • the communication device includes: a transceiver unit, configured to send a request message to a network element with a network slice selection function, where the request message is used to indicate a uniform resource identifier associated with the communication device, and the uniform resource identifier is used in the After the slice information is updated, the updated slice information is sent to the communication device; the transceiver unit is further configured to receive the updated slice information sent from the network element with the network slice selection function.
  • the slice information is used to indicate: the slice supported by the network element set, and/or, the home public land mobile network supported by the communication device The slice mapping relationship with the visited public land mobile network.
  • a communication device can select a functional network element by network slicing, or select a chip or circuit of a functional network element by network slicing, which is not limited in this application.
  • the communication device uses network slicing to select a functional network element as an example for illustration.
  • the communication device includes: a transceiver unit, configured to receive a request message sent from a mobility management network element, where the request message is used to indicate a uniform resource identifier associated with the mobility management network element, and the uniform resource identifier The symbol is used to send the updated slice information to the mobility management network element after the slice information is updated; the processing unit is used to determine that the slice information has been updated; the transceiver unit is also used to according to the unified A resource identifier, sending the updated slice information to the mobility management network element.
  • the slice information is used to indicate: the slice supported by the network element set, and/or the home public land mobile network supported by the network element set The slice mapping relationship between the network and the visited public land mobile network.
  • a communication device configured to execute the communication method in any possible implementation manner of the first aspect or the third aspect.
  • the device may include a unit and/or module, such as a processing unit and/or a transceiver unit, configured to execute the communication method provided in any one of the above implementation manners of the first aspect or the third aspect.
  • a unit and/or module such as a processing unit and/or a transceiver unit, configured to execute the communication method provided in any one of the above implementation manners of the first aspect or the third aspect.
  • the device may be a mobility management network element.
  • the transceiver unit may be a transceiver, or an input/output interface;
  • the processing unit may be at least one processor.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a communication device is provided, and the device is configured to execute the communication method in any possible implementation manner of the second aspect or the fourth aspect.
  • the device may include a unit and/or module for executing the communication method provided by any of the above implementation manners of the second aspect or the fourth aspect, such as a processing unit and/or a transceiver unit.
  • the device can select functional network elements for network slicing.
  • the transceiver unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a communication device which includes: a memory for storing programs; at least one processor for executing the computer programs or instructions stored in the memory, and any one of the above first or third aspects communication method in one possible implementation.
  • the device may be a mobility management network element.
  • a communication device which includes: a memory for storing programs; at least one processor for executing the computer programs or instructions stored in the memory to perform any of the above-mentioned second or fourth aspects A communication method in one possible implementation.
  • the device can select functional network elements for network slicing.
  • a thirteenth aspect provides a processor configured to execute the communication method in any possible implementation manner of the first aspect to the fourth aspect.
  • the processor's output and reception, input and other operations can also be understood as the sending and receiving operations performed by the radio frequency circuit and the antenna, which is not limited in this application.
  • a computer program product includes: a computer program (also referred to as code, or an instruction).
  • a computer program also referred to as code, or an instruction.
  • the computer program executes the above-mentioned first aspect to The communication method in any possible implementation manner in the fourth aspect.
  • a computer-readable storage medium stores a computer program (also referred to as code, or an instruction), and when it is run on a computer, it causes the computer to execute the above-mentioned
  • the communication method in any one possible implementation manner of the first aspect to the fourth aspect.
  • a chip system including: a processor, configured to call and run a computer program from a memory, so that the communication device installed with the chip system executes any one of the above first to fourth aspects Communication method in possible implementations.
  • the chip further includes a memory, in which computer programs or instructions are stored, and the processor is used to execute the computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, the processor is used to execute The communication method in any one possible implementation manner of the first aspect to the ninth aspect above.
  • a communication system including a mobility management network element and a network slice selection function network element; wherein the mobility management network element is configured to perform any of the possible implementations in the first aspect
  • a communication method wherein the network slice selection function network element is used to perform the communication method in any possible implementation manner in the second aspect; or, the mobility management network element is used to perform any possible implementation manner in the third aspect
  • the network element with the network slice selection function is used to execute the communication method in any possible implementation manner in the fourth aspect.
  • FIG. 1 is a structural diagram of an example of a communication system provided by the present application.
  • FIG. 2 is a schematic flowchart of an example of a communication method provided by an embodiment of the present application.
  • Fig. 3 is a schematic flowchart of another example of a communication method provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of another example of a communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another example of a communication method provided by an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of an example of a communication device provided by an embodiment of the present application.
  • Fig. 7 is a schematic block diagram of another example of a communication device provided by an embodiment of the present application.
  • the technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, the future fifth generation (5th Generation, 5G) system or New Radio (New Radio, NR), etc.
  • GSM Global System of Mobile communication
  • CDMA code division multiple access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for
  • FIG. 1 is a schematic architecture diagram of a communication system to which the present application can be applied.
  • Figure 1 is a schematic diagram of a 5G network architecture based on a service-based architecture.
  • the 5G network architecture shown in Figure 1 may include three parts, namely a terminal equipment part, a data network (data network, DN) part and an operator network part.
  • the operator network may include one or more of the following network elements: (wireless) access network ((radio) access network, (R)AN) equipment, user plane network elements, mobility management network elements, session management Authentication of network elements, policy control network elements, application function network elements, network slice selection network elements, authentication service network elements, data management network elements, network slices and stand-alone non-public network (SNPN) Authorization function (network slice-specific and SNPN authentication and authorization function, NSSAAF) network element.
  • Terminal equipment can also be called user equipment (user equipment, UE), access terminal, subscriber unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
  • user equipment user equipment
  • UE user equipment
  • access terminal subscriber unit
  • user station mobile station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device user terminal
  • terminal wireless communication device
  • user agent user agent
  • a terminal device may be a device that provides voice/data connectivity to users, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and the like.
  • some terminals are: mobile phone (mobile phone), tablet computer, notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, smart grid Wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, cellular phones, cordless phones, session initiation protocols protocol, SIP) telephone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, Vehicle-mounted devices, wearable devices, terminal devices in a 5G network, or terminal devices in a future evolving public land mobile network (PLMN), etc
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the terminal device can also be a terminal device in the Internet of Things (IoT) system.
  • IoT Internet of Things
  • IoT is an important part of the development of information technology in the future, and its main technical feature is that items can be Connect with the network to realize the intelligent network of man-machine interconnection and object interconnection.
  • the access network may be an access network using different access technologies.
  • 3GPP access technologies such as those used in 3G, 4G or 5G systems
  • non-3GPP (non-3GPP) access technologies There are currently two types of wireless access technologies: 3GPP access technologies (such as those used in 3G, 4G or 5G systems) and non-3GPP (non-3GPP) access technologies.
  • the 3GPP access technology refers to the access technology that complies with the 3GPP standard specifications.
  • the access network equipment in the 5G system is called the next generation Node Base station (gNB).
  • gNB next generation Node Base station
  • a non-3GPP access technology refers to an access technology that does not comply with the 3GPP standard specification, for example, an air interface technology represented by an access point (access point, AP) in wireless fidelity (WiFi).
  • An access network that implements a network access function based on a wireless communication technology may be referred to as a radio access network (radio access network, RAN).
  • the wireless access network can manage wireless resources, provide access services for terminals, and complete the forwarding of control signals and user data between terminals and the core network.
  • Access network equipment includes, but is not limited to: a next-generation base station (g nodeB, gNB) in 5G, an evolved node B (evolved node B, eNB), a radio network controller (radio network controller, RNC), a node B ( node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseBand unit , BBU), transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), mobile switching center, etc.
  • g nodeB, gNB next-generation base station
  • evolved node B, eNB evolved node B
  • RNC radio network controller
  • RNC radio network controller
  • node B node B
  • base station controller base station controller
  • base transceiver station base transceiver station
  • BTS home base
  • the access network device can also be a wireless controller in a cloud radio access network (CRAN) scenario, or the access network device can be a relay station, access point, vehicle-mounted device, wearable device, and future 5G Network devices in the network or network devices in the future evolved PLMN network, etc.
  • CRAN cloud radio access network
  • the embodiment of the present application does not limit the specific technology and specific equipment form adopted by the radio access network equipment.
  • User plane network element a gateway provided by the operator, and a gateway for communication between the operator network and the DN.
  • User plane network elements include data packet routing and transmission, packet detection, service usage reporting, quality of service (QoS) processing, legal interception, uplink packet detection, downlink data packet storage, and other user-plane-related functions.
  • QoS quality of service
  • the user plane network element can be a user plane function (UPF) network element.
  • UPF user plane function
  • future communication systems such as 6G, the user plane network element can still be a UPF network element, or have other names, This application is not limited.
  • DN It is a network located outside the operator's network.
  • the operator's network can access multiple DNs, and various services can be deployed on the DN, which can provide data and/or voice services for terminal equipment.
  • DN is a private network of a smart factory.
  • the sensors installed in the workshop of the smart factory can be terminal devices.
  • the control server of the sensor is deployed in the DN, and the control server can provide services for the sensor.
  • the sensor can communicate with the control server, obtain instructions from the control server, and transmit the collected sensor data to the control server according to the instructions.
  • DN is a company's internal office network, and the mobile phone or computer of the company's employees can be a terminal device, and the employee's mobile phone or computer can access information and data resources on the company's internal office network.
  • Mobility management network element mainly used for mobility management and access management, such as user location update, user registration network, user switching, etc.
  • the mobility management network element may receive non-access stratum (non-access stratum, NAS) signaling (including mobility management (MM) signaling and session management (SM) signaling) of the terminal equipment
  • NAS non-access stratum
  • MM mobility management
  • SM session management
  • Related signaling with access network equipment for example, base station granularity N2 signaling interacting with mobility management network elements
  • the mobility management network element can also be used to implement other functions in a mobility management entity (mobility management entity, MME) except session management. For example, functions such as lawful interception or access authorization (or authentication).
  • the mobility management network element can be an access and mobility management function (access and mobility management function, AMF) network element.
  • AMF access and mobility management function
  • future communication systems such as the sixth generation (the 6th generation, 6G) communication system Among them, the mobility management network element may still be an AMF network element, or have other names, which are not limited in this application.
  • Session management network element The control plane network element provided by the operator network is responsible for managing the protocol data unit (protocol data unit, PDU) session of the terminal device.
  • a PDU session is a channel for transmitting PDUs, and terminal equipment needs to transmit PDUs with DN through the PDU session.
  • the PDU session is established, maintained and deleted by the SMF network element.
  • Session management network elements include session management (such as session establishment, modification and release, including tunnel maintenance between user plane network elements and access network equipment), selection and control of user plane network elements, service and session continuity (Service and Session Continuity (SSC) mode selection, roaming and other session-related functions.
  • SSC Service and Session Continuity
  • the session management network element can be a session management function (session management function, SMF) network element.
  • SMF session management function
  • the session management network element can still be an SMF network element, or have other names, This application is not limited.
  • Policy control network element The control plane function provided by the operator is used to provide the policy of the PDU session to the session management network element.
  • Policies may include accounting-related policies, QoS-related policies, and authorization-related policies.
  • the policy control network element can be a PCF network element, and in the future communication system such as 6G, the policy control network element can still be a policy control function (policy control function, PCF) network element, or have other names, This application is not limited.
  • policy control function policy control function, PCF
  • Application network element used to transmit requirements from the application side to the network side, for example, QoS requirements or user status event subscription.
  • the application network element can be a third-party functional entity, or an application server deployed by an operator.
  • the application network element can be the application function (application function, AF) network element.
  • the application network element can still be the AF network element, or have other names, which are not covered by this application. limited.
  • Network element selection for network slicing responsible for the selection of network slicing.
  • the application network element can be a network slice selection function (network slice selection function, NSSF) network element.
  • NSSF network slice selection function
  • the application network element can still be an NSSF network element, or have other names, This application is not limited.
  • Authentication service network element it belongs to the core network control plane network element, which is mainly responsible for user authentication and authorization to ensure that the user is a legitimate user.
  • the authentication service network element can be an authentication server function (authentication server function, AUSF) network element.
  • AUSF authentication server function
  • the authentication service network element can still be an AUSF network element, or have other names, This application is not limited.
  • Data management network element The control plane network element provided by the operator is responsible for storing the subscriber permanent identifier (SUPI), credential, and security context of the subscriber in the operator's network , signing data and other information.
  • the information stored by the data management network element can be used for authentication and authorization of terminal equipment accessing the operator's network.
  • the subscribers of the above-mentioned operator network may specifically be users who use services provided by the operator network, such as users who use China Telecom's mobile phone chip card, or users who use China Mobile's mobile phone chip card.
  • the SUPI of the above-mentioned subscriber can be the number of the mobile phone chip card, etc.
  • the credential and security context of the above-mentioned contracted user may be small files stored in the encryption key of the mobile phone chip card or information related to the encryption of the mobile phone chip card for authentication and/or authorization.
  • the aforementioned security context may be data (cookie) or token (token) stored on the user's local terminal (such as a mobile phone).
  • the signing data of the above-mentioned subscribers can be the supporting services of the mobile phone chip card, such as the data package or network usage of the mobile phone chip card.
  • permanent identifiers, credentials, security contexts, authentication data (cookies), and tokens are equivalent to information related to authentication and authorization. In this application document, for the convenience of description, no distinction or limitation is made. Unless otherwise specified, the embodiment of the present application will be described by taking the security context as an example, but the embodiment of the present application is also applicable to authentication and/or authorization information expressed in other ways.
  • the data management network element can be a unified data management (unified data management, UDM) network element.
  • UDM unified data management
  • the data management network element can still be a UDM network element, or have other names, This application is not limited.
  • NSSAAF Mainly used for authentication and authorization of network slicing and independent non-public networks.
  • NSSAAF may also have other names, which are not limited in this application.
  • the above-mentioned network element or function may be a network element in a hardware device, or a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform).
  • a platform for example, a cloud platform.
  • the foregoing network element or function may be implemented by one device, or jointly implemented by multiple devices, or may be a functional module in one device, which is not specifically limited in this embodiment of the present application.
  • next generation network (Next generation, NG) 1 interface (referred to as the N1 interface) is a reference point between the terminal device and the mobility management network element, and is used for the transmission of registration request information and registration acceptance information, etc.;
  • the N22 interface is the reference point between the mobility management network element and the network slice selection function network element, and is used for the transmission of slice information, etc.
  • FIG. 1 the relationship between other interfaces and each device is shown in FIG. 1 , which are not detailed here for the sake of brevity.
  • N1, N2, N3, N4, N5, N6, N7, N8, N9, N10, N11, N12, N13, N14, N15, N22, and N58 are interface serial numbers.
  • the meanings of these interface serial numbers may refer to the meanings defined in the third generation partnership project (3rd generation partnership project, 3GPP) standard agreement, and no limitation is made here.
  • FIG. 2 is a schematic flowchart of an example of a roaming user registering to a network according to an embodiment of the present application.
  • the process that the roaming user (roaming user equipment) registers to the network includes the following steps:
  • the access network device sends a registration request message to the mobility management network element.
  • the mobility management network element receives the registration request message sent by the access network device.
  • the registration request message is used to request registration to the mobility management network element.
  • the registration request message includes slice information of the home public land mobile network that the user wants to use.
  • the mobility management network element sends a slice request message to the data management network element.
  • the data management network element receives the slice request message sent by the mobility management network element.
  • the slice request message is used to request the slice information subscribed by the roaming user.
  • the slice information signed by the roaming user is used to indicate the slice of the operator subscribed by the subscriber identity module (SIM) card of the user (terminal device). It can also be said that the slice information subscribed by the roaming user is used to indicate the ) belongs to the slice of the public land mobile network.
  • SIM subscriber identity module
  • the data management network element sends a slice response message to the mobility management network element.
  • the mobility management network element receives the slice response message sent by the data management network element.
  • the slice response message includes the slice information subscribed by the roaming user.
  • the mobility management network element sends a slice mapping relationship request message to the network slice selection functional network element.
  • the network element with the network slice selection function receives the slice mapping relationship request message sent by the mobility management network element.
  • the slice mapping relationship request message is used to request the slice information of the visited public land mobile network corresponding to the slice information subscribed by the roaming user.
  • the network element with the network slice selection function sends a slice mapping relationship response message to the mobility management network element.
  • the mobility management network element receives the slice mapping relationship response message sent by the network slice selection functional network element.
  • the slice request message includes the mapping relationship between the slice information subscribed by the roaming user and the slice information of the visited public land mobile network.
  • the terminal device equipped with the SIM card can access the network provided by operator 1. If in a certain area, there is no network deployed by operator 1, but there is a network provided by operator 2, and the terminal device equipped with the SIM card can access the network provided by operator 2. At this time, the terminal device equipped with the SIM card is a roaming terminal device, the network provided by operator 1 is the home public land mobile network of the terminal device, and the network provided by operator 2 is the visited public land mobile network of the terminal device. land mobile network.
  • the mobility management network element sends a slice selection request message to the network slice selection function network element.
  • the network element with the network slice selection function receives the slice selection request message sent by the mobility management network element.
  • the slice selection request message is used to request the slice supported by the mobility management network element in the slice indicated by the slice information of the visited public land mobile network of the roaming user.
  • the network element with the network slice selection function sends a slice selection response message to the mobility management network element.
  • the mobility management network element receives the slice selection response message sent by the network slice selection functional network element.
  • the slice selection response message is used to indicate the slice information supported by the mobility management network element in the slice indicated by the slice information of the visited public land mobile network of the roaming user.
  • the access network device, the mobility management network element, the data management network element, and the network slice selection function network element perform the registration process.
  • the mobility management network element executes S8.
  • the mobility management network element sends a registration acceptance message to the access network device.
  • the access network device receives the registration acceptance message sent by the mobility management network element.
  • the registration acceptance message carries the slice mapping relationship between the home public land mobile network that the roaming user can use and the visited public land mobile network in the current network, and the configured home public land mobile network that the roaming user can use and the visited public land mobile network. Slice mapping relationship of public land mobile network.
  • the mobility management network element needs to call the slice selection service of the network slice selection function network element to complete the slice mapping of the roaming user. It can be known from the above S6 that the mobility management network element also needs to call the slice selection service of the network slice selection function network element to complete the slice selection of the roaming user. This will have an impact on the performance of network elements that select function for network slicing.
  • the embodiment of the present application provides a communication method, through which the mobility management network element can first obtain the slice and/or the slice mapping relationship supported by the network element.
  • the mobility management network element can complete the registration process according to the local slice information and the slice mapping relationship.
  • the network slice selection function can perform slice selection and slice mapping every time, which reduces the impact on the performance of the network element with the network slice selection function.
  • the mobility management network element can select a slice according to the slices supported by the locally saved network element. In this way, there is no need to request the network element with the network slice selection function to perform slice selection every time, which reduces the impact on the performance of the network element with the network slice selection function.
  • FIG. 3 is a schematic flowchart of an example of a communication method 200 provided by an embodiment of the present application.
  • the method 200 includes:
  • the mobility management network element sends a request message to the network slice selection function network element.
  • the network element with the network slice selection function receives the request message sent by the mobility management network element.
  • the request message is used to request slice information.
  • the slice information is used to indicate: the slice supported by the network element, and/or the slice mapping relationship between the home public land mobile network supported by the network element and the visited public land mobile network.
  • a slice supported by a network element may be understood as a slice supported by one or more network elements, for example, a slice supported by a network element may be understood as a slice supported by one or more mobility management network elements. This embodiment of the present application does not limit it.
  • the slice supported by the network element includes a slice corresponding to the home public land mobile network and/or a slice corresponding to the visited public land mobile network, which is not limited in this embodiment of the present application.
  • the slice mapping relationship between the home public land mobile network supported by a network element and the visited public land mobile network can be understood as the slice mapping relationship between the home public land mobile network supported by one or more network elements and the visited public land mobile network.
  • the slice mapping relationship of the mobile network for example, the slice mapping relationship between the home public land mobile network supported by the network element and the visited public land mobile network can be understood as the home public land mobile network supported by one or more mobility management network elements.
  • the slice mapping relationship between the network and the visited public land mobile network does not limit it.
  • the slice mapping relationship between the home public land mobile network supported by the network element and the visited public land mobile network can be understood as: the slice corresponding to the home public land mobile network supported by the network element, and the received public land mobile network corresponding to the home public land mobile network mapping relationship between the slices corresponding to the visited public land mobile network.
  • the home public land mobile network may correspond to one or more slices.
  • This embodiment of the present application does not limit it. For example, if the home public land mobile network is the network provided by operator 1, the slice corresponding to the network provided by operator 1 is slice 1, or the slices corresponding to the network provided by operator 1 are slice 1 and slice 1'.
  • the visited public land mobile network may correspond to one or more slices. This embodiment of the present application does not limit it. For example, if the public land mobile network corresponding to the network provided by operator 1 is the network provided by operator 2, the slice corresponding to the network provided by operator 2 is slice 2, or the slice corresponding to the network provided by operator 2 is slice 2 , Slice 2' and Slice 2".
  • a slice corresponding to a home public land mobile network may correspond to a slice corresponding to a visited public land mobile network.
  • the slice corresponding to the home public land mobile network may correspond to the slice corresponding to the visited public land mobile network, which may be understood as the above-mentioned slice mapping relationship.
  • the slice corresponding to the network provided by operator 1 is slice 1.
  • the public land mobile network corresponding to the network provided by operator 1 is the network provided by operator 2, and the slice corresponding to the network provided by operator 2 is slice 2.
  • the slice mapping relationship between the home public land mobile network and the visited public land mobile network is the mapping relationship between slice 1 corresponding to the network provided by operator 1 and slice 2 corresponding to the network provided by operator 2 .
  • the request message includes: the identifier of the network element set, and/or, the corresponding relationship between the home public land mobile network supported by the network element set and the visited public land mobile network.
  • the slice information includes: the slice supported by the network element set, and/or, the slice mapping relationship between the home public land mobile network supported by the network element set and the visited public land mobile network.
  • the mobility management network element belongs to the network element in the network element concentration.
  • the embodiment of the present application does not limit the number of network elements included in the network element set, as long as the network element set includes the mobility management network element.
  • the identifier of the network element set can follow the identifier of the existing AMF Set.
  • the slices supported by the network element set include the slices supported by each network element in the network element set.
  • the slices supported by each network element include slices corresponding to the home public land mobile network and/or slices corresponding to the visited public land mobile network, which is not limited in this embodiment of the present application.
  • the public land mobile network corresponding to the network provided by operator 1 may be the network provided by operator 2.
  • one home public land mobile network may correspond to one or more visited public land mobile networks. This embodiment of the present application does not limit it.
  • the corresponding relationship between the home public land mobile network supported by the network element set and the visited public land mobile network may be carried in the request message in the form of a list.
  • the network element with the network slice selection function sends a response message to the request message to the mobility management network element.
  • the mobility management network element receives the response message sent by the network slice selection function network element.
  • the response message is used to indicate slice information.
  • the request message described in S210 does not include: the identity of the network element set, and/or the corresponding relationship between the home public land mobile network supported by the network element set and the visited public land mobile network
  • the The slice information in the response message includes: the slice supported by the network element, and/or, the slice mapping relationship between the home public land mobile network supported by the network element and the visited public land mobile network.
  • the request message described in S210 includes: the identifier of the network element set, and/or the corresponding relationship between the home public land mobile network supported by the network element set and the visited public land mobile network
  • the The slice information in the response message includes: the slice supported by the network element set, and/or the slice mapping relationship between the home public land mobile network supported by the network element set and the visited public land mobile network.
  • the slices supported by the network element set included in the slice information in the response message in S220 include the slices supported by each network element in the network element set.
  • the slices supported by the network element set may be carried in the response message in the form of a list.
  • the list may include a mapping relationship between each network element in the network element set and the slices supported by each network element.
  • the slice mapping relationship between the home public land mobile network supported by the network element set and the visited public land mobile network may also be carried in the response message in the form of a list.
  • the network slice selection function network element configures the unacquired slice mapping relationship between the home public land mobile network and the visited public land mobile network as a preset slice mapping relationship. In this way, it can be ensured that each slice corresponding to each home public land mobile network has a slice mapping relationship in its corresponding visited public land mobile network.
  • the slice mapping relationship between the home public land mobile network supported by the network element set and the visited public land mobile network may be carried in the response message in the form of a list.
  • the embodiment of the present application does not limit the specific form of the list.
  • Table 1 and Table 2 they are examples of two kinds of lists. It should be understood that Table 1 and Table 2 are just two examples, which should not limit the present application.
  • the slice corresponding to the belonging public land mobile network The slice corresponding to the visited public land mobile network Slice 1 corresponding to the network provided by operator 1 Slice 2 corresponding to the network provided by operator 2 Slice 1’ corresponding to the network provided by operator 1 Slice 2’ corresponding to the network provided by operator 2 Slice 1 corresponding to the network provided by operator 1" Slice 5' corresponding to the network provided by operator 5 Slice 4 corresponding to the network provided by operator 4 Slice 5 corresponding to the network provided by operator 5
  • the request message described in S210 above may be a subscription request message.
  • the response request message described in S220 above may be a subscription response message.
  • S210 and S220 may reuse the related process of subscribing (Nnssf_NSSAIAvailability_Subscribe) in the slice availability process. This saves signaling overhead.
  • the request message mentioned in S210 above may be a get request message.
  • the response request message described in S220 above may be a subscription response message.
  • S210 may reuse the related process of get, and S220 may reuse the related process of subscribing (Nnssf_NSSAIAvailability_Subscribe) in the slice availability process. This saves signaling overhead.
  • the request message described in S210 above may be a newly added request message.
  • the response request message described in S220 above may be a newly added response message.
  • the mobility management network element can actively request network element-level slice information from the network slice selection function network element, that is, the slice supported by the network element and/or the home public land mobile network and the visited network element supported by the network element.
  • the slice mapping relationship of the public land mobile network In this way, the mobility management network element does not need to request the network slice selection function network element every time slice information is needed, thereby reducing the impact on the network slice selection network element.
  • the method 200 further includes:
  • the mobility management network element stores the slice information, that is, the mobility management network element stores the slice information in the mobility management network element. In this way, the subsequent mobility management network element can directly provide corresponding slice information for the roaming terminal device according to the slice information stored locally by the mobility management network element.
  • the roaming terminal device may execute S240.
  • the roaming terminal device sends registration request information to the mobility management network element.
  • the mobility management network element receives the registration request information sent from the roaming terminal device.
  • the registration request information is used to request registration to the network.
  • Registering with the network can be understood as registering with one or more network slices of the mobility management network element.
  • the registration request information is also used to indicate the identifier of the home public land mobile network of the roaming terminal device and the identifier of the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device.
  • the embodiment of the present application does not limit the number of identifiers of the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device indicated by the registration request information.
  • the registration request information indicates the identity of the visited public land mobile network corresponding to the home public land mobile network of one or more roaming terminal devices, it can be considered that the registration request information is used to request registration to one or more network slices.
  • the roaming terminal device can indicate in the registration request information that the non-roaming terminal device's home public land mobile network In addition to the identity of the roaming terminal device, it may also indicate the identity of the slice corresponding to the home public land mobile network of the roaming terminal device. That is, the registration request information is also used to indicate the identity of the home public land mobile network of the roaming terminal device, the identity of the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device, and the identity of the roaming terminal device The identifier of the slice corresponding to the public land mobile network. In this way, the mobility management network element can obtain the slice corresponding to the home public land mobile network of the roaming terminal device according to the registration request information.
  • the embodiment of the present application does not limit the number of identifiers of slices corresponding to the home public land mobile network of the roaming terminal device indicated by the registration request information.
  • the registration request information indicates the identities of the slices corresponding to the home public land mobile network of one or more roaming terminal devices, it can be considered that the registration request information is used to request registration to one or more network slices.
  • the registration request information may directly include the identifier of the home public land mobile network of the roaming terminal device and the identifier of the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device.
  • the registration request information may include a subscriber concealed identifier (subscription concealed identifier, SUCI), where the SUCI includes the identity of the home public land mobile network of the roaming terminal device and the home public land mobile network of the roaming terminal device.
  • the identifier of the corresponding visited public land mobile network According to the SUCI, the home public land mobile network of the roaming terminal device and the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device can be obtained.
  • S250 After the mobility management network element receives the registration request message, S250 may be executed.
  • the mobility management network element determines the target mapping relationship according to the slice information.
  • the target mapping relationship includes the slice mapping relationship between the home public land mobile network accessible to the roaming terminal device and the visited public land mobile network.
  • the mobility management network element determines the slice corresponding to the home public land mobile network of the roaming terminal device, the home public land mobile network of the roaming terminal device, and the subject area corresponding to the home public land mobile network of the roaming terminal device. access to public land mobile networks.
  • the mobility management network element according to the mapping relationship, the home public land mobile network of the roaming terminal device, the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device, and the home public land mobile network of the roaming terminal device network, and determine the slice corresponding to the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device.
  • the mobility management network element determines the slices that the roaming terminal device can access from the slices corresponding to the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device, and determines the slices that the roaming terminal device can access
  • the slice mapping relationship involved in the input slice is determined as the target mapping relationship.
  • the mobility management network element may, according to the slice supported by the network element set, or the slice supported by the network element set and the geographical area where the roaming terminal device is located, select the visited mobile network corresponding to the home public land mobile network of the roaming terminal device. Among the slices corresponding to the public land mobile network, the slices accessible to the roaming terminal device are determined.
  • the slice that the roaming terminal device can access is not only the slice that the roaming terminal device requests to register, but also the slice supported by the mobility management network element.
  • the home public land mobile network of the roaming terminal device is the network provided by operator 1
  • the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device is the network provided by operator 2
  • the roaming terminal device The slice corresponding to the home public land mobile network of the device is slice 1 corresponding to the network provided by operator 1, then according to the mapping relationship described in Table 1, for example, the network provided by operator 1 corresponds to the slice corresponding to the network provided by operator 2 is slice 2.
  • the mobility management network element determines that the roaming terminal device can access slice 2 according to the slices supported by the network element set and the geographical area where the roaming terminal device is located, then the network provided by operator 1 corresponds to slice 1 and the operator
  • the mapping relationship between slices 2 corresponding to the network provided by 2 is the target mapping relationship.
  • the home public land mobile network of the roaming terminal device includes the network provided by operator 1
  • the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device includes the network provided by operator 2
  • the roaming The slice corresponding to the home public land mobile network of the terminal device is the slice 1 corresponding to the network provided by operator 1 and the slice 1' corresponding to the network provided by operator 1, then according to the mapping relationship described in Table 1, for example, operator 1 provides Slice 1 corresponding to the network provided by operator 2 is slice 2, and slice 1' corresponding to the network provided by operator 1 is slice 2' corresponding to the network provided by operator 2.
  • the mobility management network element determines that the mobility management network element only supports the slice 2' according to the slice supported by the network element set, then the slice 1' corresponding to the network provided by the operator 1 corresponds to the network provided by the operator 2
  • the mapping relationship between the slices 2' of is the target mapping relationship.
  • the home public land mobile network of the roaming terminal device includes the network provided by operator 1
  • the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device includes the network provided by operator 2 and the operator 5.
  • the network provided and the slice corresponding to the home public land mobile network of the roaming terminal device is slice 1 corresponding to the network provided by operator 1.
  • the slice corresponding to the network provided by operator 1 1 corresponds to the slice 2 corresponding to the network provided by operator 2
  • the slice 1" corresponding to the network provided by operator 1 is slice 5' corresponding to the network provided by operator 5.
  • the mobility management network element is based on the network element Set supported slices, determine that the mobility management network element supports both the slice 2' and the slice 5', then the slice 1' corresponding to the network provided by operator 1 and the slice corresponding to the network provided by operator 2
  • the mapping relationship between 2' and the mapping relationship between the slice 11' corresponding to the network provided by the operator 1 and the slice 5' corresponding to the network provided by the operator 5 is the target mapping relationship.
  • the mobility management Before the network element determines the target mapping relationship, it also needs to determine the slice corresponding to the home public land mobile network of the roaming terminal device. For example, the mobility management network element may first determine the home public land mobile network of the roaming terminal device according to the registration request information. Then, the mobility management network element obtains the slice subscribed by the roaming terminal device according to the public land mobile network to which the roaming terminal device belongs. Slice corresponding to the land mobile network.
  • the slice subscribed by the roaming terminal device can be understood as a slice that the home public land mobile network allows the roaming terminal device to use.
  • the target mapping relationship may include a mapping relationship between a slice corresponding to the home public land mobile network of the roaming terminal device and a slice corresponding to one or more visited public land mobile networks.
  • the target mapping relationship may include a mapping relationship between each of multiple slices corresponding to the home public land mobile network of the roaming terminal device and a slice corresponding to one or more visited public land mobile networks. This embodiment of the present application does not limit it.
  • the mobility management network element before determining the target mapping relationship, the mobility management network element also needs to request the slice corresponding to the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device from the network slice selection function network element.
  • the mobility management network element identifies the identity of the roaming terminal device's home public land mobile network, the identity of the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device, and the identity of the roaming terminal device.
  • the identification of the slice corresponding to the public land mobile network is sent to the network element with the network slice selection function.
  • the identifier corresponding to the visited public land mobile network and the identifier of the slice corresponding to the home public land mobile network of the roaming terminal device and determine the slice corresponding to the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device , and send the slice corresponding to the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device to the mobility management network element.
  • the mobility management network element needs to request the network slice selection function network element to determine whether the mobility management network element supports the home public land mobile network of the roaming terminal device. A slice corresponding to the visited public land mobile network.
  • the mobility management network element sends the identity of the slice corresponding to the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device determined by itself to the network slice selection function network element. Then, the network element with the network slice selection function determines whether the mobility management network element supports the slice corresponding to the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device, and sends the determined result information to the mobility management network element. If the result information indicates that the mobility management network element supports the slice corresponding to the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device, the mobility management network element The slice mapping relationship corresponding to the mobile network and the visited public land mobile network is determined as the target mapping relationship.
  • the mobility management network element may also execute S260.
  • the mobility management network element sends registration acceptance information to the roaming terminal device.
  • the roaming terminal device receives the registration acceptance information sent by the mobility management network element.
  • the registration acceptance information is used to indicate the target mapping relationship.
  • the mobility management network element can provide the roaming terminal device with the slice mapping between the home public land mobile network of the roaming terminal device and the visited public land mobile network according to the registration request of the roaming terminal device and the slice information stored locally relationship so that roaming end devices can register to the corresponding network slice.
  • the mobility management network element can complete the registration process according to the local slice information and the slice mapping relationship. There is no need to request the network element with the network slice selection function to perform slice selection and slice mapping every time, which reduces the impact on the performance of the network element with the network slice selection function.
  • the above-mentioned S240 to S260 can also be replaced by S240' to S260'.
  • the non-roaming terminal device sends registration request information to the mobility management network element.
  • the mobility management network element receives the registration request information sent from the non-roaming terminal equipment.
  • the registration request information is used to request registration to the network.
  • Registering with the network can be understood as registering with one or more network slices of the mobility management network element.
  • the registration request information is also used to indicate the identity of the home public land mobile network of the non-roaming terminal equipment.
  • the non-roaming terminal device can indicate the home public land mobile network of the non-roaming terminal device in the registration request information.
  • the identifier of the slice corresponding to the home public land mobile network of the non-roaming terminal device may also be indicated. That is, the registration request information is also used to indicate the identifier of the home public land mobile network of the non-roaming terminal device and the identifier of the slice corresponding to the home public land mobile network of the non-roaming terminal device. In this way, the mobility management network element can obtain the slice corresponding to the home public land mobile network of the non-roaming terminal device according to the registration request information.
  • the embodiment of the present application does not limit the number of identifiers of slices corresponding to the home public land mobile network of the non-roaming terminal device indicated by the registration request information.
  • the registration request information indicates the identities of the slices corresponding to the home public land mobile network of one or more non-roaming terminal devices, it can be considered that the registration request information is used to request registration to one or more network slices.
  • the registration request information may directly include the identifier of the home public land mobile network of the non-roaming terminal device.
  • the registration request information may include SUCI, where the SUCI includes the identifier of the home public land mobile network of the non-roaming terminal equipment. According to the SUCI, the home public land mobile network of the non-roaming terminal equipment can be obtained.
  • S250' After the mobility management network element receives the registration request message, S250' can be executed.
  • the mobility management network element determines the slice that the non-roaming terminal device can access according to the slice information.
  • the mobility management network element first determines the slice corresponding to the home public land mobile network of the roaming terminal device. Then, the mobility management network element determines the slices accessible to the non-roaming terminal device from the slices corresponding to the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device according to the slice information.
  • the slices that the non-roaming terminal equipment can access are not only the slices that the non-roaming terminal equipment requests to register, but also the slices supported by the mobility management network element.
  • the mobility management network element When the registration request information only indicates the identity of the home public land mobile network of the non-roaming terminal device, the mobility management network element needs to determine the attribution of the non-roaming terminal device before determining the slice that the non-roaming terminal device can access. Slice corresponding to the public land mobile network. For example, the mobility management network element may first determine the home public land mobile network of the non-roaming terminal device according to the registration request information. Then, the mobility management network element obtains the slice subscribed by the non-roaming terminal device according to the public land mobile network to which the non-roaming terminal device belongs.
  • the slice subscribed by the non-roaming terminal device is the non-roaming terminal as described above
  • the slice subscribed by the non-roaming terminal device can be understood as a slice that the home public land mobile network allows the non-roaming terminal device to use.
  • the mobility management network element directly according to the registration request information and slice information, the slices accessible to the non-roaming terminal device can be determined.
  • the mobility management network element may also perform S260'.
  • the mobility management network element sends registration acceptance information to the non-roaming terminal device.
  • the non-roaming terminal equipment receives the registration acceptance information sent by the mobility management network element.
  • the registration acceptance information is used to indicate the slices that the non-roaming terminal equipment can access.
  • the mobility management network element can provide slice selection for the non-roaming terminal device according to the registration request of the non-roaming terminal device and the supported slices stored locally, so that the non-roaming terminal device can register with the corresponding Network slicing. In this way, there is no need to request the network element with the network slice selection function to perform slice selection every time, which reduces the impact on the performance of the network element with the network slice selection function.
  • the current network slice selection function network element can also only provide the slice availability (Nnssf_NSSAIAvailability) service, so that the mobility management network element can only subscribe to the network slice selection function network element slice availability information based on the tracking area identity (tracking area identity, TAI) list ( That is, the slice supported by the mobility management network element), when the slice availability information changes, the network slice selection function network element can actively notify the mobility management network element.
  • Nnssf_NSSAIAvailability slice availability
  • TAI tracking area identity
  • the current subscription and notification mechanism between the mobility management network element and the network slice selection function network element only supports slice availability information, and does not support subscription and notification of the slice mapping relationship.
  • the slice mapping relationship (the slice mapping relationship between the belonging public land mobile network and the visited public land mobile network) on the network slice selection function network element
  • the network slice selection function network element cannot notify the mobility management network element that the slice mapping relationship
  • the update can only rely on the mobility management network element to re-acquire the slice mapping relationship from the network slice selection function network element in the user's subsequent mobility process. If the mobility management network element caches the user's slice mapping relationship, it may need to wait until the user re-initiates the initial registration to obtain the latest mapping relationship. This will cause the slice mapping relationship to take effect slowly, and the effective time is uncontrollable.
  • the 3GPP protocol requires operators to configure the slices supported by themselves on the mobility management network element, configure the slices supported by the mobility management network element set on the network slice selection function network element, and keep the configuration relationship consistent through manual configuration.
  • the slice planning is adjusted, the configuration of mobility management network elements and network slice selection function network elements needs to rely on manual operations to maintain configuration consistency.
  • the embodiment of the present application also provides a communication method, through which, when the slice information on the network element with the network slice selection function changes, the network element with the network slice selection function can notify the mobility management network element.
  • the slice information can take effect quickly and in a short time, and it does not need to rely on manual operation to keep the slice information configured on the mobility management network element consistent with the slice information configured on the network slice selection function network element.
  • FIG. 5 is a schematic flowchart of a communication method 300 provided by an embodiment of the present application.
  • the method 300 includes:
  • the mobility management network element sends a request message to the network slice selection function network element.
  • the network element with the network slice selection function receives the request message sent from the mobility management network element.
  • the request message is used to indicate the uniform resource identifier associated with the mobility management network element, and the uniform resource identifier is used to send the updated slice information to the mobility management network element after the slice information is updated.
  • the slice information may be the slice information in S210 above.
  • slice information For related descriptions about slice information, reference may be made to the description about slice information in S210 above, which will not be repeated here.
  • the slice information may be as above slice information related to S2 in FIG. 2 , and/or, as above slice information related to S4 in FIG. 2 .
  • the slice information may be as above slice information related to S2 in FIG. 2 , and/or, as above slice information related to S4 in FIG. 2 .
  • reference may be made to the description about the slice information in S2 and/or S4 above, which will not be repeated here.
  • the network element with the network slice selection function determines that the slice information has been updated.
  • the network element with the network slice selection function sends the updated slice information to the mobility management network element according to the uniform resource identifier.
  • the mobility management network element receives the updated slice information sent from the network slice selection function network element.
  • the network element with the network slice selection function may send the updated slice information to the mobility management network element by multiplexing a notification-related procedure (Nnssf_NSSAIAvaila-bility_Update). In some other embodiments, the network element with the network slice selection function may multiplex the related process of subscribing (Nnssf_NSSAIAvailability_Subscribe) in the slice availability process to send the updated slice information to the mobility management network element. In some other embodiments, the network element with the function of network slice selection may send updated slice information to the mobility management network element by adding a new notification related process.
  • the method 200 and the method 300 may be implemented independently or in combination, which is not limited in this embodiment of the present application.
  • the request message in S310 and the request message in S210 may be the same request message or different request messages, which is not limited in this embodiment of the present application.
  • request message described in S310 and the request message described in S210 are the same request message. It can be understood that: one request message is not only used to request slice information, but also used to indicate and move Uniform resource identifier associated with the management network element.
  • the request message in S310 and the request message in S210 are the same request message, the request message may be a subscription request message. Certainly, the request message may also be a newly added request message. This application is not limited to this.
  • request message described in S310 and the request message described in S210 are different request messages. It can be understood that: one request message is used to request slice information, and the other request message is used to indicate and mobility management Uniform resource identifier associated with the network element.
  • the request message described in S310 and the request message described in S210 are different request messages
  • the request message described in S310 may be a subscription request message
  • the request message described in S210 may be a get request message .
  • the two request messages may also be newly added request messages. This application is not limited to this.
  • FIG. 6 is a schematic block diagram of a communication device 600 provided by an embodiment of the present application.
  • the apparatus 600 includes a transceiver unit 610 .
  • the apparatus 600 may further include a processing unit 620 .
  • the transceiver unit 610 can communicate with the outside, and the processing unit 620 is used for data processing.
  • the transceiver unit 610 may also be called a communication interface or a communication unit.
  • the apparatus 600 may further include a storage unit, which may be used to store instructions and/or data, and the processing unit 620 may read instructions or and/or data in the storage unit.
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 620 may read instructions or and/or data in the storage unit.
  • the communication device 600 may be a mobility management network element or a component configurable in the mobility management network element.
  • the transceiver unit 610 is configured to: send a request message to a network element with a network slice selection function, the request message is used to request slice information, and the slice information is used to indicate: the slice supported by the network element, And/or, the slice mapping relationship between the home public land mobile network supported by the network element and the visited public land mobile network; A response message to the request message, where the response message is used to indicate the slice information.
  • the request message includes: an identifier of a network element set, and/or, a corresponding relationship between the home public land mobile network supported by the communication device and the visited public land mobile network;
  • the slice information includes: the slice supported by the network element set, and/or the slice mapping relationship between the home public land mobile network and the visited public land mobile network supported by the communication device; wherein, the The communication device belongs to a network element in the network element set.
  • the request message is also used to indicate a uniform resource identifier associated with the communication device, and the uniform resource identifier is used to send the updated slice information to the communication device after the slice information is updated. slice information.
  • the transceiving unit 610 is further configured to receive the updated slice information sent from the network element with the network slice selection function.
  • the communication device further includes: a processing unit 620, configured to save the slice information in the communication device.
  • the transceiving unit 610 is further configured to receive registration request information sent from a roaming terminal device, the registration request information is used to request registration to the network; the processing unit 620 is further configured to , determine the target mapping relationship, the target mapping relationship includes the home public land mobile network of the roaming terminal device and the slice mapping relationship of the visited public land mobile network; the transceiver unit 610 is also used to send the roaming terminal The device sends registration acceptance information, where the registration acceptance information is used to indicate the target mapping relationship.
  • the processing unit 620 is further specifically configured to: determine the slice corresponding to the home public land mobile network of the roaming terminal device and the home public land mobile network of the roaming terminal device; according to the mapping relationship, the The home public land mobile network of the roaming terminal device, the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device, and the slice corresponding to the home public land mobile network of the roaming terminal device, determine the Describe the target mapping relationship.
  • the registration request information is also used to indicate the identifier of the slice corresponding to the home public land mobile network of the roaming terminal device and the identifier of the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device , or, the registration request information is also used to indicate the identifier of the home public land mobile network of the roaming terminal device, the identifier of the visited public land mobile network corresponding to the home public land mobile network of the roaming terminal device, and An identifier of a slice corresponding to the home public land mobile network of the roaming terminal device.
  • the transceiver unit 610 is configured to send a request message to a network element with a network slice selection function, where the request message is used to indicate a uniform resource identifier associated with the communication device, and the uniform resource identifier is used for After the slice information is updated, the updated slice information is sent to the communication device; the transceiver unit 610 is further configured to receive the updated slice information sent from the network element with the network slice selection function.
  • the slice information is used to indicate: the slice supported by the network element set, and/or, the slice mapping relationship between the home public land mobile network and the visited public land mobile network supported by the communication device .
  • the communication device 600 may select a functional network element for network slicing or may be configured in a component that selects a functional network element for network slicing.
  • the transceiver unit 610 is configured to receive a request message sent from a mobility management network element, where the request message is used to request slice information, and the slice information is used to indicate: the slice supported by the network element, and/ Or, the slice mapping relationship between the home public land mobile network supported by the network element and the visited public land mobile network; the transceiver unit 610 is further configured to send a response to the request message to the mobility management network element message, the response message is used to indicate the slice information.
  • the request message includes: the identifier of the network element set, and/or, the corresponding relationship between the home public land mobile network supported by the network element set and the visited public land mobile network;
  • the slice information includes : the slice supported by the network element set, and/or the mapping relationship between the home public land mobile network and the visited public land mobile network slice supported by the network element set; wherein, the mobile The permanent management network element belongs to the network element in the network element set;
  • the request message is also used to indicate a uniform resource identifier associated with the mobility management network element, and the uniform resource identifier is used to send the information to the mobility management network element after the slice information is updated. Send the updated slice information.
  • the communication device further includes: a processing unit 620, configured to determine that the slice information has been updated; the transceiver unit 610, further configured to send a message to the mobility management network element according to the uniform resource identifier Send the updated slice information.
  • a processing unit 620 configured to determine that the slice information has been updated
  • the transceiver unit 610 further configured to send a message to the mobility management network element according to the uniform resource identifier Send the updated slice information.
  • processing unit 620 is further configured to acquire the slice information according to the request message.
  • processing unit 620 is further configured to configure the unacquired slice mapping relationship between the home public land mobile network and the visited public land mobile network as a preset slice mapping relationship.
  • the transceiver unit 610 is configured to receive a request message sent from a mobility management network element, where the request message is used to indicate a uniform resource identifier associated with the mobility management network element, and the uniform resource The identifier is used to send the updated slice information to the mobility management network element after the slice information is updated; the processing unit 620 is configured to determine that the slice information has been updated; the transceiver unit 610 is also configured to The uniform resource identifier sends the updated slice information to the mobility management network element.
  • the slice information is used to indicate: the slice supported by the network element set, and/or the slice mapping between the home public land mobile network and the visited public land mobile network supported by the network element set relation.
  • the embodiment of the present application further provides a communication device 700 .
  • the communication device 700 includes a processor 710, the processor 710 is coupled with a memory 720, the memory 720 is used to store computer programs or instructions and/or data, and the processor 710 is used to execute the computer programs or instructions and/or data stored in the memory 720 , so that the methods in the above method embodiments are executed.
  • the communication device 700 includes one or more processors 710 .
  • the communication device 700 may further include a memory 720 .
  • the communication device 700 may include one or more memories 720 .
  • the memory 720 may be integrated with the processor 710, or set separately.
  • the wireless communication device 700 may further include a transceiver 730, and the transceiver 730 is used for receiving and/or sending signals.
  • the processor 710 is configured to control the transceiver 730 to receive and/or send signals.
  • the communication device 700 is used to implement the operations performed by the mobility management network element in the above method embodiments.
  • the processor 710 is used to implement the processing-related operations performed by the mobility management network element in the above method embodiment
  • the transceiver 730 is used to implement the transceiving-related operations performed by the mobility management network element in the above method embodiment. operate.
  • the communication device 700 is configured to implement the operations performed by the network element with the network slice selection function in the above method embodiments.
  • the processor 710 is used to implement the processing-related operations performed by the network element with the network slice selection function in the method embodiment above
  • the transceiver 730 is used to implement the transceiving performed by the network element with the network slice selection function in the method embodiment above. related operations.
  • the embodiment of the present application also provides a computer-readable storage medium, on which computer instructions for implementing the method performed by the mobility management network element in the above method embodiments, or the method performed by the network slice selection function network element are stored.
  • the computer when the computer program is executed by a computer, the computer can implement the method performed by the mobility management network element in the foregoing method embodiments, or the method performed by the network slice selection function network element.
  • the embodiment of the present application also provides a computer program product containing instructions, when the instructions are executed by a computer, the computer implements the method executed by the mobility management network element in the above method embodiment, or the method executed by the network slice selection function network element method.
  • the embodiment of the present application also provides a communication system, which includes a mobility management network element and a network slice selection function network element.
  • the communication system includes: the mobility management network element and the network slice selection function network element in the above embodiments.
  • 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, as long as the program that records the code of the method provided in the embodiment of the present application can be executed according to the method provided in the embodiment of the present application Just communicate.
  • the execution subject of the method provided in the embodiment of the present application may be a mobility management network element or a network element with a network slice selection function, or a network element that can call a program and execute a program in a mobility management network element or a network element with a network slice selection function functional module.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de la présente demande concernent un procédé de communication et un appareil de communication. Le procédé comprend les étapes suivantes : un élément de réseau de gestion de mobilité envoie un message de demande à un élément de réseau à fonction de sélection de tranche de réseau, le message de demande étant utilisé pour demander des informations de tranche, et les informations de tranche étant utilisées pour indiquer : une tranche prise en charge par un élément de réseau, et/ou une relation de mappage de tranche, qui est prise en charge par l'élément de réseau, entre un réseau mobile terrestre public domestique et un réseau mobile terrestre public visité ; et l'élément de réseau de gestion de mobilité reçoit un message de réponse pour le message de demande qui est envoyé par l'élément de réseau à fonction de sélection de tranche de réseau, le message de réponse étant utilisé pour indiquer les informations de tranche. Au moyen de la solution technique, un élément de réseau de gestion de mobilité n'a pas besoin d'effectuer une demande à un élément de réseau de fonction de sélection de tranche de réseau à chaque fois que des informations de tranche de temps sont requises, ce qui permet de réduire l'impact sur l'élément de réseau de fonction de sélection de tranche de réseau.
PCT/CN2022/133622 2022-01-26 2022-11-23 Procédé de communication et appareil de communication WO2023142632A1 (fr)

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Citations (5)

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CN109951877A (zh) * 2017-12-20 2019-06-28 华为技术有限公司 一种切片信息更新方法及装置
CN110324813A (zh) * 2019-07-03 2019-10-11 中国联合网络通信集团有限公司 漫游场景下基于非标准s-nssai的网络切片注册方法及装置
WO2020088594A1 (fr) * 2018-11-02 2020-05-07 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et appareil de transmission de données
CN112512096A (zh) * 2017-05-09 2021-03-16 华为技术有限公司 一种基于切片的通信方法和设备
CN113709830A (zh) * 2020-05-21 2021-11-26 苹果公司 用于处理网络切片配额的增强

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CN112512096A (zh) * 2017-05-09 2021-03-16 华为技术有限公司 一种基于切片的通信方法和设备
CN109951877A (zh) * 2017-12-20 2019-06-28 华为技术有限公司 一种切片信息更新方法及装置
WO2020088594A1 (fr) * 2018-11-02 2020-05-07 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et appareil de transmission de données
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