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WO2021083033A1 - Procédé et dispositif de détermination d'une fonction de gestion de session intermédiaire (i-smf) - Google Patents

Procédé et dispositif de détermination d'une fonction de gestion de session intermédiaire (i-smf) Download PDF

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Publication number
WO2021083033A1
WO2021083033A1 PCT/CN2020/122958 CN2020122958W WO2021083033A1 WO 2021083033 A1 WO2021083033 A1 WO 2021083033A1 CN 2020122958 W CN2020122958 W CN 2020122958W WO 2021083033 A1 WO2021083033 A1 WO 2021083033A1
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Prior art keywords
smf
mec
mec application
information
type
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PCT/CN2020/122958
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English (en)
Chinese (zh)
Inventor
陶源
侯云静
王胡成
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/25—Maintenance of established connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]

Definitions

  • This application relates to the field of communication technology, and in particular to a method and device for determining an intermediate session management function I-SMF.
  • Mobile Edge Computing (MEC) technology by migrating computing storage capabilities and business service capabilities to the edge of the network, avoids sending data back to the cloud as much as possible, reducing the waiting time for data to and from the cloud and network costs.
  • 5G user planes and 5G MEC nodes are built at the edge of cloudification.
  • 5G MEC nodes provide MEC application platforms to realize the deployment and management capabilities of third-party applications. Users can get services through the MEC application.
  • a suitable intermediate session management (Intermediate SMF, I-SMF) needs to be selected to support MEC and UE Transfer data between.
  • the existing technical solution is determined by the Access and Mobility Management Function (AMF) based on the UE location, SMF and I-SMF service area information Whether to insert, change or delete the I-SMF, but the existing solution due to the UE movement, SMF cannot control the User Plan Function (UPF), which affects the session between UE and MEC and cannot be implemented as MEC choose the appropriate I-SMF.
  • AMF Access and Mobility Management Function
  • UPF User Plan Function
  • This application provides a method and device for determining an intermediate session management function I-SMF to solve the problem that the session between the user equipment UE and the MEC is affected due to the session management function SMF being unable to control the user plane function module UPF, which is implemented as MEC selects the appropriate I-SMF.
  • an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the application function (Application Function, AF) side, and the method includes:
  • the request information contains mobile edge computing MEC application information.
  • the request information is used to instruct access and mobility management AMF or session management function SMF to select I-SMF based on MEC application information when selecting I-SMF;
  • NEF Network Exposure Function
  • PCF Policy Control Function
  • the mobile edge computing MEC application information created by the AF instructs the AMF or SMF to select the I-SMF based on the MEC application information, so that the AMF or SMF selects the appropriate I-SMF based on the MEC application information to ensure that the UE Continuity of sessions and services with MEC.
  • the MEC application information includes one or more of the following: Data Network Access Identifier (DNAI) corresponding to MEC, MEC server address, MEC application server address, MEC application attributes information;
  • DNAI Data Network Access Identifier
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the PCF side of the policy control function, and the method includes:
  • the request information contains the mobile edge computing MEC application information.
  • the request information is used to indicate the access and mobility management AMF or the session management function SMF.
  • I-SMF select I based on the MEC application information -SMF;
  • PCC Policy Control Charging
  • the PCF generates PCC rules containing MEC application information according to the request information sent by the acquired AF, so that SMF can obtain MEC application information from the PCC rules.
  • the AMF or SMF selects the appropriate I-SMF, it can be based on the MEC.
  • Application information is selected to ensure the continuity of the session and service between the UE and the MEC.
  • the MEC application information includes one or more of the following: data network access identifier DNAI corresponding to the MEC, MEC server address, MEC application server address, and MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the session management function SMF side, and the method includes:
  • the PCC rules contain mobile edge computing MEC application information
  • I-SMF selection indication information is generated, and the I-SMF selection indication information is sent to Access and Mobility Management function AMF, I-SMF selection indication information is used to instruct AMF to determine I-SMF based on the first type of MEC application information when selecting I-SMF;
  • the I-SMF is determined when the I-SMF is selected according to the second type of MEC application information contained in the PCC rule, or when the second type of MEC application is included
  • the second type of MEC application information is extracted from the PCC rules of the information, and the second type of MEC application information is forwarded to the access and mobility management function AMF.
  • the SMF determines the MEC application information in the received PCC rules.
  • the MEC application information is the first type of MEC application information
  • the I-SMF selection indication information is generated, so that the AMF selects the I-SMF based on the I-SMF selection indication information.
  • the MEC application information of the first type can be selected to ensure the continuity of the session and service between the UE and the MEC.
  • the MEC application information is the second type of MEC application information
  • the SMF can select the I-SMF based on the second type of MEC application information.
  • the MEC-like application information determines the I-SMF to ensure the continuity of the session and service between the UE and the MEC.
  • the first type of MEC application information is the data network access identifier DNAI corresponding to the MEC.
  • the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the access and mobility management function AMF side, and the method includes:
  • I-SMF selection indication information sent by the session management function SMF, where the I-SMF selection indication information contains the MEC application information of the first type;
  • the I-SMF is determined when the I-SMF is selected according to the MEC application information of the first type.
  • the AMF is based on the MEC application information of the first type in the received I-SMF selection indication information.
  • it selects the I-SMF according to the MEC application information of the first type to ensure that the session and the MEC between the UE and the MEC are selected. Continuity of service.
  • the first type of MEC application information is the data network access identifier DNAI corresponding to the MEC.
  • the method further includes:
  • the I-SMF is determined when the I-SMF is selected according to the second type of MEC application information.
  • AMF is based on the second type of MEC application information in the received PCC rules, and when selecting I-SMF, it selects I-SMF according to the second type of MEC application information to ensure the continuity of the session and service between the UE and the MEC .
  • the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;
  • MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the application function AF side, and the device includes: a processor and a memory;
  • the processor is used to read the program in the memory and execute the following process:
  • the request information contains mobile edge computing MEC application information.
  • the request information is used to instruct access and mobility management AMF or session management function SMF to select I-SMF based on MEC application information when selecting I-SMF;
  • the MEC application information includes one or more of the following: the data network access identifier DNAI corresponding to the MEC, the MEC server address, the MEC application server address, and the MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the PCF side of the policy control function, and the device includes: a processor and a memory;
  • the processor is used to read the program in the memory and execute the following process:
  • the request information contains the mobile edge computing MEC application information.
  • the request information is used to indicate the access and mobility management AMF or the session management function SMF.
  • I-SMF select I based on the MEC application information -SMF;
  • the MEC application information includes one or more of the following: the data network access identifier DNAI corresponding to the MEC, the MEC server address, the MEC application server address, and the MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the session management function SMF side, and the device includes: a processor and a memory;
  • the processor is used to read the program in the memory and execute the following process:
  • the PCC rules contain mobile edge computing MEC application information
  • I-SMF selection indication information is generated, and the I-SMF selection indication information is sent to Access and Mobility Management function AMF, I-SMF selection indication information is used to instruct AMF to determine I-SMF based on the first type of MEC application information when selecting I-SMF;
  • the I-SMF is determined when the I-SMF is selected according to the second type of MEC application information contained in the PCC rule, or when the second type of MEC application is included
  • the second type of MEC application information is extracted from the PCC rules of the information, and the second type of MEC application information is forwarded to the access and mobility management function AMF.
  • the first type of MEC application information is the data network access identifier DNAI corresponding to the MEC.
  • the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the access and mobility management function AMF side, and the device includes: a processor and a memory;
  • the processor is used to read the program in the memory and execute the following process:
  • I-SMF selection indication information sent by the session management function SMF, where the I-SMF selection indication information contains the MEC application information of the first type;
  • the I-SMF is determined when the I-SMF is selected according to the MEC application information of the first type.
  • the first type of MEC application information is the data network access identifier DNAI corresponding to the MEC.
  • the processor is also used to:
  • the I-SMF is determined when the I-SMF is selected according to the second type of MEC application information.
  • the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the application function AF side.
  • the device includes a processing module and a sending module, wherein:
  • the processing module is used to create request information.
  • the request information contains mobile edge computing MEC application information.
  • the request information is used to indicate access and mobility management AMF or session management function SMF.
  • I-SMF select I based on MEC application information -SMF;
  • the sending module is used to send request information to the network opening function NEF or the policy control function PCF.
  • the MEC application information includes one or more of the following: the data network access identifier DNAI corresponding to the MEC, the MEC server address, the MEC application server address, and the MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the PCF side of the policy control function.
  • the device includes an acquisition module, a processing module, and a sending module, wherein:
  • the acquisition module is used to acquire the request information sent by the application function AF.
  • the request information contains the mobile edge computing MEC application information.
  • the request information is used to indicate the access and mobility management AMF or the session management function SMF when the I-SMF is selected based on MEC application information select I-SMF;
  • the processing module is used to generate policy control and charging PCC rules containing MEC application information according to the request information;
  • the sending module is used to send the PCC rules to the session management function SMF.
  • the MEC application information includes one or more of the following: the data network access identifier DNAI corresponding to the MEC, the MEC server address, the MEC application server address, and the MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the session management function SMF side.
  • the device includes a receiving module, a first processing module, and a second processing module, wherein:
  • the receiving module is used to receive the PCC rules sent by the policy control function PCF, and the PCC rules include mobile edge computing MEC application information;
  • the first processing module is used to generate I-SMF selection indication information based on the first type of MEC application information when it is determined that the MEC application information contained in the PCC rule is the first type of MEC application information, and to set the I-SMF selection indication information Sent to the access and mobility management function AMF, the I-SMF selection indication information is used to instruct the AMF to determine the I-SMF based on the first type of MEC application information when selecting the I-SMF;
  • the second processing module is used to determine the I-SMF when the I-SMF is selected according to the second type of MEC application information contained in the PCC rule when it is determined that the MEC application information contained in the PCC rule is the second type of MEC application information, or Extract the second type of MEC application information from the PCC rules containing the second type of MEC application information, and forward the second type of MEC application information to the access and mobility management function AMF.
  • the first type of MEC application information is the data network access identifier DNAI corresponding to the MEC.
  • the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the access and mobility management function AMF side.
  • the device includes a first receiving module and a first determining module, wherein:
  • the first receiving module is configured to receive the I-SMF selection indication information sent by the session management function SMF, and the I-SMF selection indication information includes the MEC application information of the first type;
  • the first determining module is configured to determine the I-SMF when selecting the I-SMF according to the MEC application information of the first type.
  • the first type of MEC application information is the data network access identifier DNAI corresponding to the MEC.
  • the device further includes:
  • the second receiving module is configured to receive the second type of MEC application information sent by the SMF;
  • the second determining module is used to determine the I-SMF when selecting the I-SMF according to the second type of MEC application information.
  • the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • the present application also provides a computer storage medium on which a computer program is stored, and when the program is executed by a processing unit, the steps of the method of the first aspect, the second aspect, the third aspect, or the fourth aspect are realized.
  • Figure 1 is a schematic structural diagram of an edge computing network architecture in the prior art
  • FIG. 2 is a schematic flowchart of a method for determining an intermediate session management function I-SMF provided by an embodiment of the application;
  • FIG. 3 is a schematic flowchart of another method for determining an intermediate session management function I-SMF provided by an embodiment of the application;
  • FIG. 4 is a schematic flowchart of yet another method for determining an intermediate session management function I-SMF provided by an embodiment of the application;
  • FIG. 5 is a schematic flowchart of a method for determining an intermediate session management function I-SMF applied to the AF side according to an embodiment of the application;
  • FIG. 6 is a schematic flowchart of a method for determining an intermediate session management function I-SMF applied to the PCF side according to an embodiment of the application;
  • FIG. 7 is a schematic flowchart of a method for determining an intermediate session management function I-SMF applied to the SMF side according to an embodiment of the application;
  • FIG. 8 is a schematic flowchart of a method for determining an intermediate session management function I-SMF applied to the AMF side according to an embodiment of the application;
  • FIG. 9 is a schematic structural diagram of an I-SMF determining device for an intermediate session management function on the AF side provided by an embodiment of the application;
  • FIG. 10 is a schematic structural diagram of an I-SMF determination device for an intermediate session management function on the PCF side provided by an embodiment of the application;
  • FIG. 11 is a schematic structural diagram of an I-SMF determining device for an intermediate session management function on the SMF side according to an embodiment of the application;
  • FIG. 12 is a schematic structural diagram of an I-SMF determining device for an intermediate session management function on the AMF side according to an embodiment of the application;
  • FIG. 13 is a schematic structural diagram of an I-SMF determining device for an intermediate session management function on the AF side provided by an embodiment of the application;
  • FIG. 14 is a schematic structural diagram of a device for determining an intermediate session management function I-SMF on the PCF side according to an embodiment of the application;
  • Fig. 15 is a schematic structural diagram of an I-SMF determining device for an intermediate session management function on the SMF side provided by an embodiment of the application;
  • FIG. 16 is a schematic structural diagram of an I-SMF determining device for an intermediate session management function on the AMF side provided by an embodiment of the application.
  • MEC technology migrates computing storage capabilities and business service capabilities to the edge of the network, avoiding the need to transmit data back to the cloud as much as possible, reducing the waiting time for data to and from the cloud and network costs.
  • 5G user planes and 5G MEC nodes are built at the edge of cloudification.
  • 5G MEC nodes provide MEC application platforms to realize the deployment and management capabilities of third-party applications. Users can get services through the MEC application.
  • 5G defines the application function AF, which sends an AF request (AF request) to non-trusted domains (for example, network prescribing function) or to trusted domains (for example, policy control function), which includes the target digital data network (Digital Data Network, DNN), application identification (Identification, ID), N6 routing requirements, application location and a series of parameters.
  • the policy control function PCF generates policy control and charging PCC rules for the target protocol data unit session (Protocol Data Unit Session, PDU Session) service flow according to these information parameters provided by the AF, combined with its own policy control, and selects one for it through SMF Appropriate UPF.
  • MEC provides functions such as application infrastructure resource orchestration, application instantiation, and application rule configuration. Therefore, when the MEC is deployed in the 5G system, the MEC can also act as an AF role, representing the interaction between the applications deployed on the MEC and the 5G system control plane.
  • the current edge computing network architecture is shown in Figure 1. Its main network functions are introduced as follows:
  • Access and mobility management function AMF 101 It has functions such as registration and connection management.
  • User plane function module UPF 102 It has an external PDU session node interconnected with the data network, and has the functions of message routing and forwarding.
  • Session management function SMF 103 It has functions such as session establishment and deletion, user plane selection and control, and UE IP allocation.
  • Application function AF 104 Interact with the 3GPP core network to provide service functions. Based on the deployment of operators, the trusted AF can directly interact with the relevant network function NF, while the untrusted AF cannot directly interact with the NF. Instead, the external disclosure framework should be used to conduct the network opening function NEF.
  • NEF Provides functions to safely expose the services and capabilities provided by the 3GPP network to external networks.
  • Policy control function PCF 105 It has a unified policy framework to manage network behaviors and provide policy rules for the control plane NF to execute.
  • NRF Network Storage Function
  • Unified Data Management (UDM) UDM 106 Store UE information, such as subscription information, and information about established PDU sessions.
  • UDR Unified Data Repository
  • I-SMF is an SMF that is inserted, changed, or deleted to the PDU session as needed to control UPF that the original SMF cannot control (because the UPF belongs to different SMF service areas).
  • SMF is a session management function, which is mainly used for session establishment and deletion, user plane selection and control, UE IP allocation, etc.
  • I-SMF has the same function as SMF.
  • the AMF is responsible for checking when to add or delete an I-SMF for a PDU session.
  • a mobility event for example, handover AMF changes
  • the AMF selects and inserts a service that can serve the UE and meets the network slice identification (Sign-Network Slice Selection Assistance Information, S -NSSAI) I-SMF.
  • S -NSSAI Network Slice Selection Assistance Information
  • AMF Conversely, if AMF detects an I-SMF that is no longer needed, AMF will delete the SMF interface between the I-SMF and the AMF directly connected to the PDU session. If the AMF detects that the SMF cannot provide services for the location of the UE (for example, due to the mobility of the UE), the AMF selects a new I-SMF to provide services for the UE. If the existing I-SMF cannot provide services for the location of the UE, the AMF will initiate the replacement of the I-SMF.
  • the current I-SMF selection mechanism defined by 5G is determined by the AMF based on the UE location, SMF and I-SMF service area, etc., to determine whether to insert, change or delete the I-SMF.
  • the SMF cannot control the UPF and the session between the UE and the MEC is affected.
  • the embodiment of the present application proposes an I-SMF selection method to select a suitable I-SMF according to the service (for example, for UEs that need to use the MEC service) to ensure the session and service continuity between the UE and the MEC.
  • an intermediate session management function I-SMF determination method provided in the embodiment of the application.
  • the AF sends a request containing the DNAI corresponding to the MEC Information AF request
  • PCF generates new PCC rules and updates to SMF based on AF request
  • SMF obtains DNAI in PCC rules and sends it to AMF
  • AMF selects I-SMF based on DNAI, which specifically includes the following steps:
  • Step 201 AF creates request information.
  • the request information contains MEC application information as DNAI, which is used to instruct the selection of I-SMF based on DNAI.
  • AF creates a request message by calling the Nnef_TrafficInfluence_Create service operation.
  • the message contains the data network access identifier DNAI corresponding to the MEC, which is also the DNAI corresponding to the DN where the MEC is deployed, and is used to indicate the selection of I-SMF based on the DNAI.
  • the request information may also include one or a group of UE IDs (for example, Generic Public Subscription Identifier (GPSI)).
  • GPSI Generic Public Subscription Identifier
  • Step 202 NEF receives the request information and stores it in the UDR.
  • AF sends request information to NEF, and NEF stores the AF request in UDR.
  • Step 203 UDR sends notification information to PCF.
  • the PCF subscribes to the UDR for changes in the AF request, when the AF request information changes, the UDR notifies the PCF by sending notification information, and the PCF can obtain the request information of the AF request from the notification information.
  • Step 204 The PCF generates a new PCC rule according to the request information.
  • the PCF can directly receive the request information sent by the AF, and generate new PCC rules based on the request information, that is, without performing steps 203 and 204, the AF directly sends the request information after generating the request information To PCF.
  • Step 205 The PCF sends a new PCC rule to the SMF, and the PCC rule contains MEC application information.
  • the PCF can send the new PCC rule to the SMF by calling Npcf_SMPolicyControl_UpdateNotify.
  • Step 206 SMF extracts MEC application information from PCC rules, and generates I-SMF selection instruction information.
  • SMF after SMF receives the new PCC rule, it extracts DNAI information from the PCC rule and generates I-SMF selection instruction information, where the I-SMF selection instruction information contains DNAI information.
  • Step 207 The SMF sends I-SMF selection indication information with MEC application information to the AMF.
  • Step 208 The AMF selects an I-SMF according to the I-SMF selection instruction information.
  • the I-SMF selection instruction information received by AMF contains DNAI information, and AMF selects I-SMF based on DNAI information. For example, AMF selects I-SMF based on whether I-SMF supports DNAI, and whether I-SMF supports DNAI. Information can be obtained from NRF.
  • an intermediate session management function I-SMF determination method provided in the embodiment of the application.
  • the AF sent contains the MEC server address/MEC application AF request of server address
  • PCF generates new PCC rules based on AF request and updates to SMF
  • SMF selects I-SMF based on PCC rules
  • SMF obtains MEC server address/MEC application server address from PCC rules and sends it to AMF, which is based on MEC
  • the server address/MEC application server address selection I-SMF includes the following steps:
  • Step 301 AF creation request information
  • the request information includes the MEC server address/MEC application server address, which is used to instruct the selection of I-SMF based on the MEC server address/MEC application server address.
  • AF creates a request message by calling the Nnef_TrafficInfluence_Create service operation.
  • the message contains the MEC server address/MEC application server address, which is used to indicate that based on the MEC server address/MEC application server address, select I-SMF, and the request information contains One or a group of UE IDs (for example, GPSI).
  • Step 302 NEF receives the request information and stores it in the UDR.
  • AF sends request information to NEF, and NEF stores the AF request in UDR.
  • Step 303 The UDR sends notification information to the PCF.
  • the PCF subscribes to the UDR for changes in the AF request, when the AF request information changes, the UDR notifies the PCF by sending notification information, and the PCF can obtain the request information of the AF request from the notification information.
  • Step 304 The PCF generates a new PCC rule according to the request information, and the PCC rule includes the MEC server address/MEC application server address.
  • the PCF can directly receive the request information sent by the AF, and generate new PCC rules based on the request information, that is, without performing steps 303 and 304, the AF directly sends the request information after generating the request information To PCF.
  • Step 305 The PCF sends a new PCC rule to the SMF, and the PCC rule includes the MEC server address/MEC application server address.
  • PCF sends PCC rules to SMF by calling Npcf_SMPolicyControl_UpdateNotify.
  • Step 306 The SMF obtains the MEC server address/MEC application server address in the new PCC rule, and sends it to the AMF.
  • step 307 the AMF selects the I-SMF according to the MEC server address/MEC application server address.
  • AMF selects the appropriate I-SMF according to the MEC server address/MEC application server address sent by the received SMF. For example, the service area of the I-SMF can cover the access to the MEC, and whether the I-SMF can access the MEC through the corresponding UPF .
  • the SMF selects the I-SMF according to the PCC rules.
  • an intermediate session management function I-SMF determination method provided in the embodiment of the present application.
  • the AF sends the AF containing the MEC application attribute information.
  • Request, MEC application attribute information includes the distribution of applications and application instances, service capabilities, load, life cycle, and the corresponding MEC server address/MEC application server address, etc.
  • PCF generates new PCC rules and updates to SMF based on AF request.
  • SMF selects I-SMF based on PCC rules, or SMF obtains MEC application attribute information from PCC rules and sends it to AMF, and AMF selects I-SMF based on MEC application attribute information, which specifically includes the following steps:
  • Step 401 AF creation request information, the request information contains MEC application information as MEC application attribute information, which is used to instruct the selection of I-SMF based on the MEC application attribute information.
  • AF creates a request message by calling the Nnef_TrafficInfluence_Create service operation.
  • the message contains MEC application attribute information (including the distribution of applications and application instances, service capabilities, service types, loads, and life cycles, which are used to select I-SMF , Traffic routing, traffic guidance, etc.), used to indicate the selection of I-SMF based on MEC application attribute information, and the request information includes one or a group of UE IDs (for example, GPSI).
  • Step 402 NEF receives the request information and stores it in the UDR.
  • AF sends request information to NEF, and NEF stores the AF request in UDR.
  • Step 403 UDR sends notification information to PCF.
  • the PCF subscribes to the UDR for changes in the AF request, when the AF request information changes, the UDR notifies the PCF by sending notification information, and the PCF can obtain the request information of the AF request from the notification information.
  • step 404 the PCF generates a new PCC rule according to the request information.
  • the PCF can directly receive the request information sent by the AF, and generate a new PCC rule based on the request information, that is, without performing steps 403 and 404, the AF sends the request information directly after generating the request information To PCF.
  • the PCF can directly receive the request information sent by the AF, and generate a new PCC rule based on the request information, that is, it is not necessary to perform steps 502 and 503. After the AF generates the request information, it directly sends the request information To PCF.
  • Step 405 The PCF sends a new PCC rule to the SMF, and the PCC rule contains MEC application attribute information.
  • PCF sends PCC rules to SMF by calling Npcf_SMPolicyControl_UpdateNotify.
  • Step 406 The SMF obtains the MEC application attribute information from the new PCC rule and sends it to the AMF.
  • step 407 the AMF selects the I-SMF according to the MEC application attribute information.
  • the AMF selects an appropriate I-SMF according to the MEC application attribute information sent by the received SMF, for example, the I-SMF is selected based on the service type, location, and service area of the I-SMF of the MEC application, whether it can access the MEC, etc.
  • steps 406 and 407 may not be required, and the SMF selects the I-SMF according to the PCC rules.
  • an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the AF side and includes the following steps:
  • Step 501 Create request information.
  • the request information contains mobile edge computing MEC application information.
  • the request information is used to indicate access and mobility management AMF or session management function SMF.
  • I-SMF is selected, the I-SMF is selected based on the MEC application information. .
  • AF can create a request information AF request by calling the Nnef_TrafficInfluence_Create service operation.
  • the request information contains MEC application information.
  • the MEC application information can be one of the DNAI corresponding to the MEC, the MEC server address, and the MEC application attribute information.
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles, that is, information related to MEC application information.
  • the MEC application information in the request information is MEC application attribute information, it can provide information for I-SMF selection, traffic routing, and traffic guidance.
  • the request information generated by AMF is used to instruct AMF or SMF to select I-SMF based on MEC application information when selecting I-SMF, so as to select a suitable I-SMF for the MEC to ensure the session between the UE and the MEC. Service continuity, especially when the UE is moving.
  • the request information created by the AF may also include a UE ID or a group of UE IDs (for example, GPSI).
  • Step 502 Send the request information to the network opening function NEF or the policy control function PCF.
  • the AF sends the generated request information to the NEF, so that the NEF stores the request information in the UDR, and the PCF can obtain the request information from the notification information by subscribing to the UDR for the change of the request information.
  • the AF sends the generated request information directly to the PCF.
  • an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the PCF side and includes the following steps:
  • Step 601 Obtain request information sent by the application function AF.
  • the request information includes mobile edge computing MEC application information.
  • the request information is used to indicate the access and mobility management AMF or the session management function SMF when the I-SMF is selected, based on the MEC application Information choose I-SMF.
  • the PCF directly obtains the request information sent by the AF to the PCF, and the PCF subscribes to the UDR for the request information sent by the AF to the NEF.
  • the PCF obtains the request information sent by the AF through the notification information.
  • the request information obtained by the PCF includes MEC application information.
  • the MEC application information can be one or more of DNAI, MEC server address, and MEC application attribute information.
  • the MEC application attribute information includes the distribution of MEC applications and MEC application instances. , Service capability, service type, load, life cycle, that is, MEC business related information.
  • Step 602 According to the request information, generate policy control and charging PCC rules containing MEC application information.
  • the PCF generates a new PCC rule according to the request information sent by the AF, and the new PCC rule contains the MEC application information.
  • Step 603 Send the PCC rule to the session management function SMF.
  • PCF sends the generated PCC rules to SMF by calling Npcf_SMPolicyControl_UpdateNotify, that is, to update SMF with new rules.
  • an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the SMF side and includes the following steps:
  • Step 701 Receive a PCC rule sent by a policy control function PCF, where the PCC rule contains mobile edge computing MEC application information.
  • SMF receives the PCC rules sent by PCF, updates the PCC rules in SMF, the received PCC rules contain MEC application information, the first type of MEC application information can be the DNAI corresponding to the MEC, and the second type of MEC application information can be One or more of MEC server address, MEC application server address, and MEC application attribute information, where the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • Step 702 When it is determined that the MEC application information contained in the PCC rule is the first type of MEC application information, generate I-SMF selection indication information based on the first type of MEC application information, and send the I-SMF selection indication information to the access With the mobility management function AMF, the I-SMF selection indication information is used to instruct the AMF to determine the I-SMF based on the first type of MEC application information when selecting the I-SMF.
  • the DNAI information can be extracted from the PCC rule to generate I-SMF selection instruction information, And send it to AMF to instruct AMF to select the appropriate I-SMF according to the first type of MEC application information, that is, DNAI when re-determining the I-SMF.
  • Step 703 When it is determined that the MEC application information contained in the PCC rule is the second type of MEC application information, the I-SMF is determined when the I-SMF is selected according to the second type of MEC application information contained in the PCC rule, or when the second type of MEC application information is included
  • the second-type MEC application information is extracted from the PCC rules of the MEC-like application information, and the second-type MEC application information is forwarded to the access and mobility management function AMF.
  • the SMF determines that the MEC application information contained in the received PCC rule is the second type of MEC application information, that is, one or more of the MEC server address, the MEC application server address, and the MEC application attribute information, where the MEC Application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • SMF can directly determine the I-SMF based on the second type of MEC application information when selecting the I-SMF, or extract the second type of MEC application information from the PCC rules, and combine the second type of MEC application information.
  • the MEC-like application information is sent to the AMF.
  • an intermediate session management function I-SMF determination method provided by an embodiment of the present application is applied to the AMF side and includes the following steps:
  • Step 801 Receive I-SMF selection indication information sent by the session management function SMF, where the I-SMF selection indication information includes the first type of MEC application information.
  • the AMF receives the I-SMF selection indication information sent by the SMF, which is used to instruct the AMF to select a suitable I-SMF according to the first type of MEC application information (for example, DNAI) contained in the indication information.
  • the first type of MEC application information for example, DNAI
  • Step 802 Determine the I-SMF when selecting the I-SMF according to the MEC application information of the first type.
  • AMF when AMF selects I-SMF, it selects the appropriate I-SMF based on DNAI. For example, AMF selects I-SMF based on whether I-SMF supports DNAI. Information about whether I-SMF supports DNAI can be obtained from NRF. . AMF can also perform I-SMF insertion or change operation flow.
  • the AMF receives the MEC application information of the second type sent by the SMF;
  • the I-SMF is determined when the I-SMF is selected according to the second type of MEC application information.
  • AMF selects the appropriate I-SMF according to the second type of MEC application information, for example, according to the service area of the I-SMF can cover access to the MEC and whether it can pass the corresponding UPF accesses MEC, etc. to determine I-SMF.
  • the MEC application attribute information includes: the distribution of applications and application instances, service capabilities, service types, loads, and life cycles One or more of them, the AMF selects the appropriate I-SMF according to the second type of MEC application information in the PCC rules, for example, based on the service type and location of the MEC application, the service area of the I-SMF, and whether the MEC can be accessed Wait to determine the I-SMF.
  • MEC application attribute information can be used for I-SMF selection, and can also be used to provide information for traffic routing, traffic guidance and other links.
  • a UE ID or a group of UE IDs may also be used for determination.
  • the embodiment of the present application also provides an intermediate session management function I-SMF determination device, because the device is the device in the method in the embodiment of the present application, and the principle of the device to solve the problem is the same as that of the method. Similar, so the implementation of the device can refer to the implementation of the method, and the repetition will not be repeated.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the application function AF side and includes a processor 900, a memory 901, and a transceiver 902.
  • the processor 900 is responsible for managing the bus architecture and general processing, and the memory 901 can store data used by the processor 900 when performing operations.
  • the transceiver 902 is used to receive and transmit data under the control of the processor 900.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 900 and various circuits of the memory represented by the memory 901 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface provides the interface.
  • the processor 900 is responsible for managing the bus architecture and general processing, and the memory 901 can store data used by the processor 900 when performing operations.
  • the process disclosed in the embodiment of the present application may be applied to the processor 900 or implemented by the processor 900.
  • each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 900 or instructions in the form of software.
  • the processor 900 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the The disclosed methods, steps and logic block diagrams.
  • the general-purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory 901, and the processor 900 reads the information in the memory 901, and completes the steps of the signal processing flow in combination with its hardware.
  • processor 900 is configured to read the program in the memory 901 and execute the following process:
  • the request information contains mobile edge computing MEC application information.
  • the request information is used to instruct access and mobility management AMF or session management function SMF to select I-SMF based on MEC application information when selecting I-SMF;
  • the MEC application information includes one or more of the following: the data network access identifier DNAI corresponding to the MEC, the MEC server address, the MEC application server address, and MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the PCF side of the policy control function and includes a processor 1000, a memory 1001, and a transceiver 1002.
  • the processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1001 can store data used by the processor 1000 when performing operations.
  • the transceiver 1002 is used to receive and transmit data under the control of the processor 1000.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1000 and various circuits of the memory represented by the memory 1001 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface provides the interface.
  • the processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1001 can store data used by the processor 1000 when performing operations.
  • the process disclosed in the embodiment of the present application may be applied to the processor 1000 or implemented by the processor 1000.
  • each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 1000 or instructions in the form of software.
  • the processor 1000 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the The disclosed methods, steps and logic block diagrams.
  • the general-purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory 1001, and the processor 1000 reads the information in the memory 1001, and completes the steps of the signal processing flow in combination with its hardware.
  • the processor 1000 is configured to read a program in the memory 1001 and execute the following process:
  • the request information contains the mobile edge computing MEC application information.
  • the request information is used to indicate the access and mobility management AMF or the session management function SMF.
  • I-SMF select I based on the MEC application information -SMF;
  • the MEC application information includes one or more of the following: the data network access identifier DNAI corresponding to the MEC, the MEC server address, the MEC application server address, and MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided in an embodiment of the present application is applied to the session management function SMF side and includes a processor 1100, a memory 1101, and a transceiver 1102.
  • the processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1101 may store data used by the processor 1100 when performing operations.
  • the transceiver 1102 is used to receive and send data under the control of the processor 1100.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1100 and various circuits of the memory represented by the memory 1101 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface provides the interface.
  • the processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1101 may store data used by the processor 1100 when performing operations.
  • the process disclosed in the embodiment of the present application may be applied to the processor 1100 or implemented by the processor 1100.
  • each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 1100 or instructions in the form of software.
  • the processor 1100 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and may implement or execute the The disclosed methods, steps and logic block diagrams.
  • the general-purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory 1101, and the processor 1100 reads the information in the memory 1101 and completes the steps of the signal processing flow in combination with its hardware.
  • the processor 1100 is configured to read a program in the memory 1101 and execute the following process:
  • the PCC rules contain mobile edge computing MEC application information
  • I-SMF selection indication information is generated, and the I-SMF selection indication information is sent to Access and Mobility Management function AMF, I-SMF selection indication information is used to instruct AMF to determine I-SMF based on the first type of MEC application information when selecting I-SMF;
  • the I-SMF is determined when the I-SMF is selected according to the second type of MEC application information contained in the PCC rule, or when the second type of MEC application is included
  • the second type of MEC application information is extracted from the PCC rules of the information, and the second type of MEC application information is forwarded to the access and mobility management function AMF.
  • the first type of MEC application information is the data network access identifier DNAI corresponding to the MEC.
  • the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the session management function AMF side and includes a processor 1200, a memory 1201, and a transceiver 1202.
  • the processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1201 can store data used by the processor 1200 when performing operations.
  • the transceiver 1202 is used to receive and transmit data under the control of the processor 1200.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1200 and various circuits of the memory represented by the memory 1201 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface provides the interface.
  • the processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1201 can store data used by the processor 1200 when performing operations.
  • the process disclosed in the embodiment of the present application may be applied to the processor 1200 or implemented by the processor 1200.
  • each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 1200 or instructions in the form of software.
  • the processor 1200 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and may implement or execute the The disclosed methods, steps and logic block diagrams.
  • the general-purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory 1201, and the processor 1200 reads the information in the memory 1201, and completes the steps of the signal processing flow in combination with its hardware.
  • the processor 1200 is configured to read a program in the memory 1201 and execute the following process:
  • I-SMF selection indication information sent by the session management function SMF, where the I-SMF selection indication information contains the MEC application information of the first type;
  • the I-SMF is determined when the I-SMF is selected according to the MEC application information of the first type.
  • the first type of MEC application information is the data network access identifier DNAI corresponding to the MEC.
  • the processor is also used to:
  • the I-SMF is determined when the I-SMF is selected according to the second type of MEC application information.
  • the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device is also provided in the embodiment of the present application.
  • This device is the device in the method in the embodiment of the present application, and the principle of the device to solve the problem is the same as The method is similar, so the implementation of the device can refer to the implementation of the method, and the repetition will not be repeated.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the application function AF side.
  • the device includes a processing module 1301 and a sending module 1302, where:
  • the processing module 1301 is used to create request information.
  • the request information contains mobile edge computing MEC application information.
  • the request information is used to indicate access and mobility management AMF or session management function SMF.
  • I-SMF is selected, the selection is based on MEC application information I-SMF.
  • the sending module 1302 is used to send request information to the network opening function NEF or the policy control function PCF.
  • the MEC application information includes one or more of the following: the data network access identifier DNAI corresponding to the MEC, the MEC server address, the MEC application server address, and MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the PCF side of the policy control function.
  • the device includes an acquisition module 1401, a processing module 1402, and a sending module 1403. Among them,
  • the obtaining module 1401 is used to obtain request information sent by the application function AF.
  • the request information includes mobile edge computing MEC application information.
  • the request information is used to indicate the access and mobility management AMF or the session management function SMF when the I-SMF is selected, Select I-SMF based on MEC application information;
  • the processing module 1402 is configured to generate policy control and charging PCC rules containing MEC application information according to the request information;
  • the sending module 1403 is used to send the PCC rules to the session management function SMF.
  • the MEC application information includes one or more of the following: the data network access identifier DNAI corresponding to the MEC, the MEC server address, the MEC application server address, and MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the session management function SMF side.
  • the device includes a receiving module 1501, a first processing module 1502, and a second processing module 1503. ,among them,
  • the receiving module 1501 is used to receive the PCC rules sent by the policy control function PCF, and the PCC rules include mobile edge computing MEC application information;
  • the first processing module 1502 is configured to, when it is determined that the MEC application information contained in the PCC rule is the first type of MEC application information, generate I-SMF selection indication information based on the first type of MEC application information, and indicate the I-SMF selection
  • the information is sent to the access and mobility management function AMF, and the I-SMF selection indication information is used to instruct AMF to determine the I-SMF based on the first type of MEC application information when selecting the I-SMF;
  • the second processing module 1503 is used to determine the I-SMF when the I-SMF is selected according to the second type of MEC application information contained in the PCC rule when it is determined that the MEC application information contained in the PCC rule is the second type of MEC application information, Or, extract the second-type MEC application information from the PCC rule containing the second-type MEC application information, and forward the second-type MEC application information to the access and mobility management function AMF.
  • the first type of MEC application information is the data network access identifier DNAI corresponding to the MEC.
  • the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;
  • the MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • an intermediate session management function I-SMF determination device provided by an embodiment of the present application is applied to the access and mobility management function AMF side.
  • the device includes a first receiving module 1601 and a first determining module 1602 ,among them,
  • the first receiving module 1601 is configured to receive I-SMF selection indication information sent by the session management function SMF, and the I-SMF selection indication information includes the first type of MEC application information;
  • the first determining module 1602 is configured to determine the I-SMF when the I-SMF is selected according to the MEC application information of the first type.
  • the first type of MEC application information is the data network access identifier DNAI corresponding to the MEC.
  • the equipment also includes:
  • the second receiving module 1603 is configured to receive the second type of MEC application information sent by the SMF;
  • the second determining module 1604 is configured to determine the I-SMF when the I-SMF is selected according to the second type of MEC application information.
  • the second type of MEC application information includes one or more of the following: MEC server address, MEC application server address, and MEC application attribute information;
  • MEC application attribute information includes MEC applications, distribution of MEC application instances, service capabilities, service types, loads, and life cycles.
  • An embodiment of the present application also provides a computer-readable non-volatile storage medium, including program code.
  • program code runs on a computing terminal
  • the program code is used to enable the computing terminal to perform the above-mentioned intermediate session management function of the embodiment of the present application.
  • -SMF determines the steps of the method.
  • this application can also be implemented by hardware and/or software (including firmware, resident software, microcode, etc.).
  • this application may take the form of a computer program product on a computer-usable or computer-readable storage medium, which has a computer-usable or computer-readable program code implemented in the medium to be used or used by the instruction execution system. Used in conjunction with the instruction execution system.
  • a computer-usable or computer-readable medium can be any medium that can contain, store, communicate, transmit, or transmit a program for use by an instruction execution system, apparatus, or device, or in combination with an instruction execution system, Device or equipment use.

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Abstract

La présente invention concerne un procédé et un dispositif de détermination d'une fonction de gestion de session intermédiaire (I-SMF) qui permettent de résoudre le problème d'altération d'une session entre un UE et un MEC en raison d'une fonction de gestion de session qui ne permet pas de commander des modules de fonction de plan utilisateur. Le procédé de la présente invention est utilisé côté fonction d'application (AF) et consiste : à créer des informations de demande, les informations de demande comprenant des informations d'application de calcul en périphérie de réseau mobile (MEC), et les informations de demande servant à donner l'instruction à une fonction de gestion d'accès et de mobilité (AMF) ou à une fonction de gestion de session (SMF) de sélectionner l'I-SMF sur la base des informations d'application MEC lors de la sélection de l'I-SMF ; à envoyer les informations de demande à une fonction d'exposition de réseau (NEF) ou à une fonction de commande de politique (PCF). Étant donné que le procédé de détermination d'une fonction de gestion de session intermédiaire (I-SMF) de la présente invention crée des informations de demande donnant l'instruction à l'AMF ou à la SMF de sélectionner l'I-SMF sur la base d'informations d'application MEC, une I-SMF appropriée est sélectionnée pour le MEC, garantissant la continuité de la session entre l'UE et le MEC.
PCT/CN2020/122958 2019-10-30 2020-10-22 Procédé et dispositif de détermination d'une fonction de gestion de session intermédiaire (i-smf) Ceased WO2021083033A1 (fr)

Applications Claiming Priority (2)

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