WO2023103649A1 - 会话创建方法、网元、存储介质 - Google Patents

会话创建方法、网元、存储介质 Download PDF

Info

Publication number
WO2023103649A1
WO2023103649A1 PCT/CN2022/128728 CN2022128728W WO2023103649A1 WO 2023103649 A1 WO2023103649 A1 WO 2023103649A1 CN 2022128728 W CN2022128728 W CN 2022128728W WO 2023103649 A1 WO2023103649 A1 WO 2023103649A1
Authority
WO
WIPO (PCT)
Prior art keywords
smf
target
group
group identifier
optional
Prior art date
Application number
PCT/CN2022/128728
Other languages
English (en)
French (fr)
Inventor
董婧
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2023103649A1 publication Critical patent/WO2023103649A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/04—Real-time or near real-time messaging, e.g. instant messaging [IM]
    • 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
    • H04L67/141—Setup of application sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management

Definitions

  • This application relates to, but is not limited to, the field of 5G communications, and in particular relates to a method for creating a session, a network element, and a storage medium.
  • the third generation partnership project (3rd Generation Partnership Project, 3GPP) introduced the 5G local area network (Local Area Network, LAN) service, belonging to the same 5G LAN Users under the network form a 5G virtual network (Virtual Network, VN) group, and perform data routing through the anchor user plane function (Anchor User Plane Function, A-UPF), thereby realizing private communication similar to a local area network.
  • 3GPP Third Generation Partnership Project
  • a 5G VN group may belong to multiple session management functions (Session Management Function, SMF), and according to the existing standards of 3GPP, for the same 5G VN group, its protocol data unit (Protocol Data Unit, PDU ) sessions should belong to the same SMF.
  • SMF Session Management Function
  • PDU Protocol Data Unit
  • Embodiments of the present application provide a session creation method, a network element, and a storage medium.
  • the embodiment of the present application provides a method for creating a session, which is applied to Access and Mobility Management (Access and Mobility Management Function, AMF), and the method includes: when the terminal (User Equipment, UE) initiates PDU session establishment request, obtain the target VN group identifier, the target VN group identifier belongs to the target VN group to which the UE belongs; determine at least one optional SMF according to the target VN group identifier; select from the target VN group according to the preset policy Determine a target SMF among the optional SMFs, and create a PDU session belonging to the target VN group through interaction with the target SMF.
  • AMF Access and Mobility Management Function
  • the embodiment of the present application provides a method for creating a session, which is applied to a network repository function (Network Repository Function, NRF).
  • the method includes: obtaining an SMF query request sent by the AMF, and the SMF query request carries a target The VN group identifier, the target VN group identifier is obtained by the AMF after obtaining the session establishment request initiated by the UE, and the target VN group identifier belongs to the target VN group to which the UE belongs; according to the target VN
  • the group identifier determines an optional SMF set, the optional SMF set includes at least one optional SMF; feeding back the optional SMF set to the AMF, so that the AMF determines a target SMF from the optional SMFs, And create a PDU session belonging to the target VN group through interaction with the target SMF.
  • the embodiment of the present application provides a method for creating a session, which is applied to SMF, and the method includes: obtaining a PDU session creation request sent by AMF, wherein the PDU session creation request carries a target VN group identifier, and the The target VN group identifier belongs to the target VN group to which the UE that initiates the PDU session establishment request belongs, and the PDU session establishment request is determined by the AMF from the optional SMFs according to the preset strategy.
  • the optional SMF is determined by the AMF according to the VN identifier of the target group; and a PDU session belonging to the target VN group is created.
  • an embodiment of the present application provides a network element, including: a memory, a processor, and a computer program stored on the memory and operable on the processor, and the processor implements the following when executing the computer program.
  • the session creation method in one aspect, or implement the session creation method in the second aspect, or implement the session creation method in the third aspect.
  • the embodiment of the present application provides a computer-readable storage medium, which stores computer-executable instructions, and the computer-executable instructions are used to execute the session creation method as described in the first aspect, or execute the session creation method as described in the first aspect.
  • FIG. 1 is a flowchart of a session creation method applied to AMF provided by an embodiment of the present application
  • Figure 2 is an architecture diagram of the existing 5G LAN local routing communication
  • Figure 3 is an architecture diagram of the existing 5G LAN based on N19 interface communication
  • Figure 4 is an architecture diagram of the existing 5G LAN based on N6 interface communication
  • Fig. 5 is the flow chart that obtains SMF set provided by another embodiment of the present application.
  • FIG. 6 is a flow chart of obtaining a target VN group identifier provided by another embodiment of the present application.
  • FIG. 7 is a flowchart of creating a PDU session provided by another embodiment of the present application.
  • FIG. 8 is a flow chart of determining a target SMF provided by another embodiment of the present application.
  • FIG. 9 is a flowchart of establishing an association relationship provided by another embodiment of the present application.
  • FIG. 10 is a flowchart of a session creation method applied to NRF provided by another embodiment of the present application.
  • Fig. 11 is a flow chart of registering SMF provided by another embodiment of the present application.
  • FIG. 12 is a schematic diagram of a registered SMF provided by another embodiment of the present application.
  • FIG. 13 is a flowchart of obtaining an optional SMF set provided by another embodiment of the present application.
  • FIG. 14 is a flowchart of a session creation method applied to SMF provided by another embodiment of the present application.
  • Fig. 15 is a flow chart of registering SMF provided by another embodiment of the present application.
  • FIG. 16 is a schematic diagram of UE registration provided by an example of this application.
  • Figure 17 is a schematic diagram of session creation provided by the example of this application.
  • Figure 18 is a flow chart of Example 1 of the present application.
  • Fig. 19 is a flow chart of Example 2 of the present application.
  • Fig. 20 is an apparatus diagram of a network element provided by another embodiment of the present application.
  • Embodiments of the present application respectively provide a session creation method, a network element, and a storage medium.
  • the session creation method includes: when obtaining a PDU session establishment request initiated by a UE, obtaining a target VN group identifier, and the target VN group identifier belongs to the The target VN group to which the UE belongs; determine at least one optional SMF according to the target VN group identifier; determine the target SMF from the optional SMFs according to the preset policy, and create a Describe the PDU session of the target VN group.
  • At least one optional SMF can be determined through the target VN group identifier, and then the target SMF can be selected according to the preset strategy, and the flexible selection of the SMF can be realized through the AMF, which effectively improves the flexibility of networking and facilitates the realization of Flexible configuration and flexible networking.
  • FIG. 1 is a flowchart of a session creation method provided by an embodiment of the present application.
  • the session creation method is applied to AMF, including but not limited to step S110 , step S120 and step S130 .
  • Step S110 when the PDU session establishment request initiated by the UE is obtained, the target VN group identifier is obtained, and the target VN group identifier belongs to the target VN group to which the UE belongs.
  • VN group identification can be any type of identification information, for example, with the data network name (Data Network Name, DNN) as the granularity, each VN group is assigned a unique corresponding VN group identification information (Group ID), VN Group ID can be pre-configured for each VN group, and each DNN can support any number of VN groups.
  • DNN Data Network Name
  • VN Group ID can be pre-configured for each VN group
  • DNN can support any number of VN groups.
  • the 5G VN group to which the UE belongs is known. Based on this, the PDU session establishment request initiated by the UE can carry the target VN group identifier, or the AMF can use the registration information of the UE Obtained from the unified data management function (Unified Data Management, UDM), the storage network element identified by the VN group in this embodiment is not limited.
  • UDM Unified Data Management
  • Step S120 determine at least one optional SMF according to the target VN group identifier.
  • the VN group ID can be at the DNN granularity.
  • SMF usually multiple DNNs can be supported, and the supported DNNs are known. Therefore, after determining the target VN group ID , can determine at least one optional SMF corresponding to the target VN group identifier, for example, SMF1 can support VN group 1 and VN group 2, SMF2 can support VN group 2 and VN group 3, and SMF3 can support VN group 3, when The target VN group identifier corresponds to VN group 2, and the optional SMFs are SMF1 and SMF2.
  • SMF1 can support VN group 1 and VN group 2
  • SMF2 can support VN group 2 and VN group 3
  • SMF3 can support VN group 3
  • the target VN group identifier corresponds to VN group 2
  • the optional SMFs are SMF1 and SMF2.
  • the NRF can send back the corresponding optional SMF by sending an SMF discovery request to the NRF.
  • the NRF can also save the association between the SMF and the VN group ID It is obtained from the network element of the relationship, which is not limited in this embodiment.
  • Step S130 Determine the target SMF from the optional SMFs according to the preset policy, and create a PDU session belonging to the target VN group through interaction with the target SMF.
  • Figure 2 to Figure 4 show three common 5G LAN networking modes.
  • UE1 and UE2 belonging to the same 5G VN group, in the networking mode shown in Figure 2, UE1 and UE2 pass the same One A-UPF implements local routing; in the networking shown in Figure 3 and Figure 4, UE1 and UE2 are connected to different A-UPFs respectively, and the two A-UPFs can be connected through N19 as shown in Figure 3
  • the interface implements routing, and as shown in Figure 4, routing can be performed through the N6 interface through a data network (Data Network, DN).
  • Data Network Data Network
  • the preset policy can be formulated according to the actual networking requirements. For example, when the PDU session created this time is the first PDU session in the target VN group, one can be randomly selected from the available SMFs according to the preset policy as the The target SMF, for example, randomly selects one from the optional SMFs, or selects according to the resource occupation of the optional SMFs. Those skilled in the art are capable of selecting the target SMF for the first time according to actual needs, and there is no limitation here. When a PDU session already exists in the target VN group corresponding to the UE, the preset policy can be adjusted according to actual needs.
  • the SMF to which UE2 belongs can be selected as the target SMF, which is convenient for selecting the same A-UPF to realize local routing.
  • it is not necessary to select the SMF to which UE2 belongs instead select the target SMF from other available SMFs.
  • Those skilled in the art have the ability to adjust the preset strategy according to the actual networking requirements, and it is enough to realize the 5G LAN networking, so there is no limitation here.
  • the PDU sessions of the same 5G VN group should belong to the same SMF, so as to realize the networking method shown in Figure 2, but in fact, 5G LAN can also pass through Figure 3 and The method shown in Figure 4 implements networking.
  • the networking method shown in Figure 2 has certain advantages in local routing efficiency, it is difficult to meet the needs of flexible networking with only one networking method. Therefore, this embodiment Determine at least one optional SMF through the target VN group identifier, and then select the target SMF in combination with the preset strategy. Any one of the networking modes shown in Figure 2 to Figure 4 can be realized, so that the decision-making of the AMF can be used to realize flexible networking.
  • step S120 in the embodiment shown in FIG. 1 also includes but is not limited to the following steps:
  • Step S510 sending an SMF query request carrying the target VN group identification to the NRF, so that the NRF feeds back an optional SMF set, wherein the optional SMF set includes at least one optional SMF, and the optional SMF is identified by the NRF according to the target VN group and
  • the SMF registration information determines that the SMF registration information includes the VN group identifier associated with the registered SMF.
  • the NRF can save the registration information of the SMF, and when the SMF to be registered sends a registration request to the NRF, it carries the VN Group ID of the 5G VN group supported by the SMF, so that the SMF registration information saved by the NRF carries the VN Group ID .
  • the target VN Group ID can be carried in the SMF discovery request sent by the AMF to the NRF, so that the NRF can select the SMF according to the target VN Group The ID matches the VN Group ID in the SMF registration information.
  • one VN Group ID can belong to multiple SMFs, and NRF will use the matched SMFs as optional SMFs to form a set of optional SMFs, and then pass The found SMF response feeds back the set of optional SMFs to AMF, so that AMF can obtain at least one optional SMF.
  • SMF1 can support VN group 1 and VN group 2
  • SMF2 can support VN group 2 and VN group 3
  • SMF3 can support VN group 3
  • the SMF registration information of SMF1 saves VN Group ID1 and VN Group ID2
  • the SMF registration information of SMF2 saves VN Group ID2 and VN Group ID3
  • the SMF registration information of SMF3 saves VN Group ID3, when the target VN Group
  • the ID is VN Group ID1
  • the SMF registration information of SMF1, SMF2 and SMF3 can be matched, and the optional SMFs can be obtained as SMF1 and SMF2, so that the information of SMF1 and SMF2 can be fed back to AMF.
  • the target VN Group ID can be used as a newly added field in the SMF discovery request. It is a technology well known to those skilled in the art to query from the NRF based on the newly added field. The query process will not be described in detail here.
  • the target VN Group ID newly added in this embodiment it can also carry common parameters such as DNN, slice information, and location information that can be used to filter SMFs, which will not be repeated here.
  • the optional SMF set can be in the form of an SMF list, or the information of the optional SMF can be fed back to the AMF one by one.
  • This embodiment does not limit the feedback form of the optional SMF set, which can enable AMF to obtain Just go to the optional SMF matched by NRF.
  • step S110 in the embodiment shown in FIG. 1 also includes but is not limited to the following steps:
  • Step S610 sending a subscription information acquisition request to UDM
  • Step S620 acquire the subscription information fed back by the UDM, wherein the subscription information carries the target VN group identifier.
  • the AMF can obtain the UE's subscription information from the UDM, and thus obtain the VN Group ID from the subscription information as the target VN Group ID, so as to realize the determination of the target VN Group ID.
  • step S130 in the embodiment shown in FIG. 1 also includes but is not limited to the following steps:
  • Step S710 sending a PDU session creation request carrying the target VN group identifier to the target SMF, so that the target SMF creates a PDU session belonging to the target VN group according to the target VN group identifier.
  • the target SMF can support multiple 5G VN groups, in order to distinguish the attribution of the PDU session by VN Group ID, the target VN Group ID can be carried in the PDU session creation request, so that the target SMF targets the target VN Group ID Create a PDU session, so as to realize the association between the PDU session and the VN Group ID, and facilitate the flexible selection of the target SMF according to the preset policy and the target VN Group ID.
  • step S130 in the embodiment shown in FIG. 1 also includes but is not limited to the following steps:
  • Step S810 when the VN group identifier of the VN group to which the first PDU session belongs matches the target VN group identifier, determine that the optional SMF to which the first PDU session belongs is the target SMF, wherein the first PDU session is in a running state;
  • Step S820 determining the optional SMF configured as the preferred SMF as the target SMF.
  • the same SMF can be selected as the UE in the same 5G VN group, which is beneficial Select the same A-UPF to implement local routing.
  • the first PDU session in the running state in the SMF and the PDU session to be created belong to the same 5G VN group, it can be matched through the VN Group ID.
  • the PDU session creation request sent by the AMF carries the target VN Group ID, so it can be determined whether there is a matching first PDU session through the target VN Group ID, and the dynamic selection of the SMF is realized. The specific matching process will not be described here.
  • AMF can also select the target SMF through static configuration, such as setting priority in the optional SMF, pre-configuring the preferred SMF, and after obtaining the optional SMF.
  • the SMF is preferred as the target SMF, and the specific priority setting rules can be adjusted according to actual needs, so there are no limitations here.
  • step S130 in the embodiment shown in FIG. 1 is executed, the following steps are also included but not limited to:
  • Step S910 establishing an association relationship between the target SMF and the target VN group ID.
  • another embodiment of the present application provides a method for creating a session, which is applied to NRF, and the method for creating a session includes but is not limited to steps S1010, S1020, and S1030.
  • Step S1010 obtain the SMF query request sent by the AMF, the SMF query request carries the target VN group identifier, the target VN group identifier is obtained by the AMF after obtaining the session establishment request initiated by the UE, and the target VN group identifier belongs to the UE.
  • target VN group ;
  • Step S1020 determining an optional SMF set according to the target VN group identifier, where the optional SMF set includes at least one optional SMF;
  • Step S1030 feed back the set of optional SMFs to the AMF, so that the AMF determines the target SMF from the optional SMFs, and creates a PDU session belonging to the target VN group through interaction with the target SMF.
  • step S1010 before performing step S1010 in the embodiment shown in FIG. 10 , it also includes but is not limited to the following steps:
  • Step S1110 obtain the registration request sent by the SMF to be registered, wherein the registration request carries at least one associated VN group identifier;
  • Step S1120 generating SMF registration information for the SMF to be registered, wherein the SMF registration information includes an associated VN group identifier.
  • step S1020 in the embodiment shown in FIG. 10 also includes but is not limited to the following steps:
  • Step S1310 determining at least one optional SMF according to the target VN group ID and SMF registration information, wherein the associated VN group ID corresponding to the optional SMF matches the target VN group ID;
  • Step S1320 obtain an optional SMF set according to all the determined optional SMFs.
  • another embodiment of the present application provides a method for creating a session, which is applied to SMF, and the method for creating a session includes but is not limited to steps S1410 and S1420.
  • Step S1410 obtain the PDU session creation request sent by the AMF, wherein the PDU session creation request carries a target VN group identifier, and the target VN group identifier belongs to the target VN group to which the UE that initiates the PDU session establishment request belongs, and the PDU session creation request is issued by
  • the AMF sends the SMF under the condition of determining the target SMF from the optional SMF according to the preset strategy, and the optional SMF is determined by the AMF according to the target group VN identifier;
  • Step S1420 creating a PDU session belonging to the target VN group.
  • step S1410 before performing step S1410 in the embodiment shown in FIG. 14 , it also includes but is not limited to the following steps:
  • Step S1510 determining the associated VN group identifier of at least one associated VN group
  • Step S1520 sending a registration request carrying the associated VN group identifier to the NRF, so that the NRF saves the associated VN group identifier in the SMF registration information.
  • Example 1 Create a PDU session.
  • the VN group ID takes the VN Group ID at DNN granularity as an example.
  • FIG 18. This example includes but is not limited to the following steps:
  • Step S1810 the UE registers with the 5GC, and obtains user subscription information from the UDM during the registration process, and the UDM response message carries the subscription information based on the DNN granularity VN Group ID;
  • Step S1820 the UE triggers a PDU session establishment request under 5G VN group 1;
  • Step S1830 AMF starts to select SMF for the PDU session of 5G VN group 1, and sends an SMF query request to NRF, carrying DNN, slice, location information, and VN Group ID of 5G VN group 1;
  • Step S1840 the NRF query obtains the SMF1 and SMF2 to which the 5G VN group 1 belongs, and carries them to the AMF in the query response;
  • Step S1850 AMF selects a SMF1 from SMF1 and SMF2 through static configuration or dynamic selection mode, as the preferred SMF of 5G VN group 1, and saves the information of the preferred SMF;
  • Step S1860 AMF sends a PDU session creation request message to SMF1, carrying the VN Group ID of the 5G VN group 1 to which SMF1 belongs;
  • Step S1870 the SMF returns a PDU session creation response
  • step S1880 the PDU session is established successfully.
  • Example 2 Continue to create a PDU session in the SMF that has already created a PDU session. Referring to Figure 19, this example includes but is not limited to the following steps:
  • Step S1910 the UE registers with the 5GC, and obtains user subscription information from the UDM during the registration process, and the UDM response message carries the subscription information based on the DNN granularity VN Group ID;
  • Step S1920 when the UE has used the DNN to trigger the PDU session establishment request under the 5G VN group 1, it makes the PDU session establishment request under the 5G VN group 1 again;
  • Step S1930 AMF starts to select SMF for the PDU session of 5G VN group 1, and sends an SMF query request to NRF, carrying DNN, slice, location information, and VN Group ID of 5G VN group 1;
  • Step S1940 the NRF query obtains the SMF1 and SMF2 to which the 5G VN group 1 belongs, and carries them to the AMF in the query response;
  • Step S1950 the AMF selects the same SMF1 as the established PDU session through local policy decision-making;
  • Step S1960 AMF sends a PDU session creation request message to SMF1, carrying the VN Group ID of the 5G VN group 1 to which SMF1 belongs;
  • Step S1970 the SMF returns a PDU session creation response
  • step S1980 the PDU session is established successfully.
  • the network element 2000 includes: a memory 2010 , a processor 2020 , and a computer program stored in the memory 2010 and operable on the processor 2020 .
  • the processor 2020 and the memory 2010 may be connected through a bus or in other ways.
  • the non-transitory software programs and instructions required to implement the session creation method of the above embodiment are stored in the memory 2010, and when executed by the processor 2020, the session creation method applied to the network element in the above embodiment is executed, for example, executing Method step S110 to step S130 in Fig. 1 described above, method step S510 in Fig. 5, method step S610 to step S620 in Fig. 6, method step S710 in Fig. 7, method step S810 to step in Fig. 8 S820, method step S910 in FIG. 9 , method step S1010 to step S1030 in FIG. 10 , method step S1110 to step S1120 in FIG. 11 , method step S1310 to step S1320 in FIG. 13 , method step S1410 in FIG. 14 Go to step S1420, step S1510 to step S1520 of the method in FIG. 15 .
  • the device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place, or they may be distributed to multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • an embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by a processor or a controller, for example, by the above-mentioned Execution by a processor in the network element embodiment can cause the above processor to execute the session creation method applied to the network element in the above embodiment, for example, execute the method steps S110 to S130 in FIG. 1 described above, and FIG. 5 Method step S510 in, method step S610 to step S620 in Fig. 6, method step S710 in Fig. 7, method step S810 to step S820 in Fig. 8, method step S910 in Fig. 9, method step in Fig.
  • the embodiment of this application includes: when the PDU session establishment request initiated by the UE is obtained, the target VN group identifier is obtained, and the target VN group identifier belongs to the target VN group to which the UE belongs; according to the target VN group identifier, at least An optional SMF; determining a target SMF from the optional SMFs according to a preset strategy, and creating a PDU session belonging to the target VN group through interaction with the target SMF.
  • At least one optional SMF can be determined through the target VN group identifier, and then the target SMF can be selected according to the preset strategy, and the flexible selection of the SMF can be realized through the AMF, which effectively improves the flexibility of networking and is beneficial to Realize flexible configuration and flexible networking.
  • Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, tape, magnetic disk storage or other magnetic storage devices, or can Any other medium used to store desired information and which can be accessed by a computer.
  • communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer And Data Communications (AREA)

Abstract

本申请提供了一种会话创建方法、网元、存储介质，会话创建方法包括：当获取到UE发起的PDU会话建立请求，获取目标VN组标识，所述目标VN组标识归属于所述UE所归属的目标VN组(S110)；根据所述目标VN组标识确定至少一个可选SMF(S120)；根据预设策略从所述可选SMF中确定目标SMF，通过与所述目标SMF的交互创建归属于所述目标VN组的PDU会话(S130)。

Description

会话创建方法、网元、存储介质
相关申请的交叉引用
本申请基于申请号为202111511756.9、申请日为2021年12月6日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及但不限于5G通信领域，尤其涉及一种会话创建方法、网元、存储介质。
背景技术
随着第五代通信技术(5th Generation，5G)技术的发展，第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)引入了5G局域网(Local Area Network，LAN)服务，归属于同一个5G LAN下的用户组成一个5G虚拟网络(Virtual Network，VN)组，通过锚点用户面功能(Anchor User Plane Function，A-UPF)进行数据路由，从而实现类似局域网的私有通信。
在实际部署时，一个5G VN组可能会归属多个会话管理功能(Session Management Function，SMF)，而根据3GPP的现有标准，对于同一个5G VN组，其协议数据单元(Protocol Data Unit，PDU)会话应该归属到同一个SMF，这种组网方式的灵活性较低，无法满足灵活组网的需求。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请实施例提供了一种会话创建方法、网元、存储介质。
第一方面，本申请实施例提供了一种会话创建方法，应用于接入和移动性管理(Access and Mobility Management Function，AMF)，所述方法包括：当获取到终端(User Equipment，UE)发起的PDU会话建立请求，获取目标VN组标识，所述目标VN组标识归属于所述UE所归属的目标VN组；根据所述目标VN组标识确定至少一个可选SMF；根据预设策略从所述可选SMF中确定目标SMF，通过与所述目标SMF的交互创建归属于所述目标VN组的PDU会话。
第二方面，本申请实施例提供了一种会话创建方法，应用于网络仓储功能(Network Repository Function，NRF)，所述方法包括：获取AMF发送的SMF查询请求，所述SMF查询请求携带有目标VN组标识，所述目标VN组标识由所述AMF在获取到UE发起的会话建立请求的情况下获取，所述目标VN组标识归属于所述UE所归属目标VN组；根据所述目标VN组标识确定可选SMF集合，所述可选SMF集合包括至少一个可选SMF；将所述可选SMF集合反馈至所述AMF，以使所述AMF从所述可选SMF中确定目标SMF，并通过与所述目标SMF的交互创建归属于所述目标VN组的PDU会话。
第三方面，本申请实施例提供了一种会话创建方法，应用于SMF，所述方法包括：获取AMF发送的PDU会话创建请求，其中，所述PDU会话创建请求携带有目标VN组标识，所述目标VN组标识归属于发起PDU会话建立请求的UE所归属的目标VN组，所述PDU会话创建请求由所述AMF在根据预设策略将所述SMF从可选SMF中确定所述目标SMF的情况下发送，所述可选SMF由所述AMF根据所述目标组VN标识确定；创建归属于所述目标VN组的PDU会话。
第四方面，本申请实施例提供了一种网元，包括：存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如第一方面所述的会话创建方法，或者，实现如第二方面所述的会话创建方法，或者，实现如第三方面所述的会话创建方法。
第五方面，本申请实施例提供了一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行如第一方面所述的会话创建方法，或者，执行如第二方面所述的会话创建方法，或者，执行如第三方面所述的会话创建方法。
本申请的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本申请而了解。本申请的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
附图用来提供对本申请技术方案的进一步理解，并且构成说明书的一部分，与本申请的实施例一起用于解释本申请的技术方案，并不构成对本申请技术方案的限制。
图1是本申请一个实施例提供的应用于AMF的会话创建方法的流程图；
图2是现有的5G LAN本地路由通信的架构图；
图3是现有的5G LAN基于N19接口通信的架构图；
图4是现有的5G LAN基于N6接口通信的架构图；
图5是本申请另一个实施例提供的获取SMF集合的流程图；
图6是本申请另一个实施例提供的获取目标VN组标识的流程图；
图7是本申请另一个实施例提供的创建PDU会话的流程图；
图8是本申请另一个实施例提供的确定目标SMF的流程图；
图9是本申请另一个实施例提供的建立关联关系的流程图；
图10是本申请另一个实施例提供的应用于NRF的会话创建方法的流程图；
图11是本申请另一个实施例提供的注册SMF的流程图；
图12是本申请另一个实施例提供的注册SMF的示意图；
图13是本申请另一个实施例提供的获取可选SMF集合的流程图；
图14是本申请另一个实施例提供的应用于SMF的会话创建方法的流程图；
图15是本申请另一个实施例提供的注册SMF的流程图；
图16是本申请示例提供的UE注册示意图；
图17是本申请示例提供的会话创建的示意图；
图18是本申请示例一的流程图；
图19是本申请示例二的流程图；
图20是本申请另一个实施例提供的网元的装置图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请的技术方案，并不用于限定本申请的技术方案。
需要说明的是，虽然在装置示意图中进行了功能模块划分，在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于装置中的模块划分，或流程图中的顺序执行所示出或描述 的步骤。说明书、权利要求书或上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
本申请实施例分别提供了一种会话创建方法、网元、存储介质，会话创建方法包括：当获取到UE发起的PDU会话建立请求，获取目标VN组标识，所述目标VN组标识归属于所述UE所归属的目标VN组；根据所述目标VN组标识确定至少一个可选SMF；根据预设策略从所述可选SMF中确定目标SMF，通过与所述目标SMF的交互创建归属于所述目标VN组的PDU会话。根据本实施例的技术方案，能够通过目标VN组标识确定至少一个可选SMF，再根据预设策略选择目标SMF，通过AMF实现了灵活选取SMF，有效提高了组网的灵活性，有利于实现灵活配置和灵活组网。
下面结合附图，对本申请实施例作进一步阐述。
如图1所示，图1是本申请一个实施例提供的一种会话创建方法的流程图，该会话创建方法应用于AMF，包括但不限于有步骤S110、步骤S120和步骤S130。
步骤S110，当获取到UE发起的PDU会话建立请求，获取目标VN组标识，目标VN组标识归属于UE所归属的目标VN组。
需要说明的是，VN组标识可以是任意类型的标识信息，例如以数据网络名称(Data Network Name，DNN)为粒度，为每个VN组分配唯一对应的VN组标识信息(Group ID)，VN Group ID可以预先为每个VN组配置好，每个DNN可以支持任意数量的VN组，本领域技术人员熟知如何为VN组配置标识参数，在此不多作赘述。
需要说明的是，在UE注册到5GC之后，UE所归属的5G VN组是可知的，基于此，UE发起的PDU会话建立请求可以携带有目标VN组标识，也可以由AMF根据UE的注册信息从统一数据管理功能(Unified Data Management，UDM)获取，本实施例VN组标识的存储网元不多作限定。
步骤S120，根据目标VN组标识确定至少一个可选SMF。
需要说明的是，基于上述实施例的描述，VN组标识可以是DNN粒度的，对于SMF而言，通常可以支持多个DNN，并且所支持的DNN是可知的，因此在确定目标VN组标识之后，可以确定出该目标VN组标识所对应的至少一个可选SMF，例如，SMF1可以支持VN组1和VN组2，SMF2可以支持VN组2和VN组3，SMF3可以支持VN组3,当目标VN组标识对应VN组2，则可选SMF为SMF1和SMF2，在具备VN组与SMF的对应关系的前提下，本领域技术人员有动机根据实际需求选取匹配方式，在此不多作限定。
值得注意的是，在具备目标VN组标识的情况下，可以通过向NRF发送SMF发现请求的方式，使得NRF反馈相对应的可选SMF，当然也可以从其他能够保存SMF与VN组标识的关联关系的网元中获取，本实施例对此不多作限定。
步骤S130，根据预设策略从可选SMF中确定目标SMF，通过与目标SMF的交互创建归属于目标VN组的PDU会话。
值得注意的是，图2至图4为常见的三种5G LAN组网方式，对于归属于同一个5G VN组的UE1和UE2，在图2所示的组网方式中，UE1和UE2通过同一个A-UPF实现本地路由；在图3和图4所示的组网方式中，UE1和UE2分别与不同的A-UPF连接，两个A-UPF之间可以如图3所示，通过N19接口实现路由，也可以如图4所示，通过N6接口经过数据网络(Data Network，DN)进行路由。上述三种方式均为常见的5G LAN组网方式，本实施例并未对具体结构做出改 进，仅用于灵活组网的示例性说明。
需要说明的是，预设策略可以根据实际组网需求制定，例如，当本次创建的PDU会话为目标VN组中首个的PDU会话，可以根据预设策略从可选SMF中任意选取一个作为目标SMF，例如从可选SMF中随机选取一个，或者根据可选SMF的资源占用情况进行选取，本领域技术人员有能力根据实际需求进行首次目标SMF的选择，在此不多作限定。当UE所对应的目标VN组已经存在PDU会话，可以根据实际需求调整预设策略，例如，当接收到UE1发送的会话建立请求，在已经建立了UE2的PDU会话的情况下，为了实现图2所示的组网方式，可以选择与UE2所归属的SMF作为目标SMF，便于选择同一个A-UPF实现本地路由，为了实现图3或者图4所示的组网方式，可以不选择UE2所归属的SMF，而是从其他可选SMF中选择目标SMF。本领域技术人员有能力根据实际组网需求调整预设策略，能够实现5G LAN组网即可，在此不多作限定。
值得注意的是，按照3GPP的现有标准，同一个5G VN组的PDU会话应该归属到同一个SMF下，从而实现图2所示的组网方式，但是实际上5G LAN还可以通过图3和图4所示的方式实现组网，虽然图2所示的组网方式在本地路由效率上有一定的优势，但是仅有一种组网方式很难满足灵活组网的需求，因此，本实施例通过目标VN组标识确定至少一个可选SMF，再结合预设策略选取出目标SMF，能够实现图2至图4任意一种组网方式，从而利用AMF的决策实现灵活组网。
另外，在一实施例中，参照图5，图1所示实施例中的步骤S120还包括但不限于有以下步骤：
步骤S510，向NRF发送携带有目标VN组标识的SMF查询请求，以使NRF反馈可选SMF集合，其中，可选SMF集合包括至少一个可选SMF，可选SMF由NRF根据目标VN组标识和SMF注册信息确定，SMF注册信息包括与注册的SMF所关联的VN组标识。
需要说明的是，NRF能够保存SMF的注册信息，在待注册的SMF向NRF发起注册请求时携带SMF所支持的5G VN组的VN Group ID，使得NRF保存的SMF注册信息中携带有VN Group ID。
值得注意的是，以VN组标识为VN Group ID为例，为了根据目标VN Group ID确定可选SMF，可以在AMF向NRF发送的SMF发现请求中携带目标VN Group ID，使得NRF根据目标VN Group ID与SMF注册信息中的VN Group ID进行匹配。
需要说明的是，由于SMF与VN Group ID为多对多的关系，因此一个VN Group ID可以归属于多个SMF，NRF将匹配出的SMF作为可选SMF，从而形成可选SMF集合，再通过发现SMF响应将可选SMF集合反馈给AMF，即可使AMF得到至少一个可选SMF，例如，SMF1可以支持VN组1和VN组2，SMF2可以支持VN组2和VN组3，SMF3可以支持VN组3,则SMF1的SMF注册信息保存有VN Group ID1和VN Group ID2，SMF2的SMF注册信息保存有VN Group ID2和VN Group ID3，SMF3的SMF注册信息保存有VN Group ID3，当目标VN Group ID为VN Group ID1的情况下，从SMF1、SMF2和SMF3的SMF注册信息进行匹配，可以得到可选SMF为SMF1和SMF2，从而将SMF1和SMF2的信息反馈至AMF。
需要说明的是，目标VN Group ID可以作为SMF发现请求中新增的字段，从NRF根据新增字段进行查询为本领域技术人员熟知的技术，在此对查询过程不多作赘述，当然，在SMF发现请求中，除了可以携带本实施例新增的目标VN Group ID，还可以携带常见的DNN、切片 信息、位置信息等可用于筛选SMF的参数，在此不一一赘述。
值得注意的是，可选SMF集合可以是SMF列表的形式，也可以是将可选SMF的信息逐条反馈至AMF，本实施例对可选SMF集合的反馈形式不多作限定，能够使得AMF获取到NRF匹配出的可选SMF即可。
另外，在一实施例中，参照图6，图1所示实施例中的步骤S110还包括但不限于有以下步骤：
步骤S610，向UDM发送签约信息获取请求；
步骤S620，获取UDM反馈的签约信息，其中，签约信息携带有目标VN组标识。
需要说明的是，参照图12所示的注册流程，在UE注册到5GC的过程中，需要在UDM中生成签约信息，在VN Group ID可以是DNN粒度的情况下，可以在签约信息中增加字段，用于保存UE所归属的VN Group ID，具体的注册签约过程为本领域技术人员熟知的方法，在此不赘述。
需要说明的是，在签约信息携带有VN Group ID的情况下，AMF接收到UE的PDU会话建立请求后，可以从UDM中获取UE的签约信息，从而从签约信息中获取VN Group ID作为目标VN Group ID，从而实现目标VN Group ID的确定。
另外，在一实施例中，参照图7，图1所示实施例中的步骤S130还包括但不限于有以下步骤：
步骤S710，向目标SMF发送携带有目标VN组标识的PDU会话创建请求，以使目标SMF根据目标VN组标识创建归属于目标VN组的PDU会话。
需要说明的是，由于目标SMF可以支持多个5G VN组，为了实现以VN Group ID区分PDU会话的归属，可以在PDU会话创建请求中携带目标VN Group ID，使得目标SMF针对该目标VN Group ID创建PDU会话，从而实现PDU会话与VN Group ID的关联，便于根据预设策略和目标VN Group ID进行灵活选取目标SMF。
另外，在一实施例中，参照图8，图1所示实施例中的步骤S130还包括但不限于有以下步骤：
步骤S810，当第一PDU会话所归属的VN组的VN组标识与目标VN组标识相匹配，确定第一PDU会话所归属的可选SMF为目标SMF，其中，第一PDU会话处于运行状态；
或者，
步骤S820，将被配置为首选SMF的可选SMF确定为目标SMF。
需要说明的是，在UE所归属的5G VN组已经创建过PDU会话的情况下，为了采用图2所示的组网方式，可以与同一个5G VN组中的UE选取相同的SMF，有利于选取同一个A-UPF实现本地路由。
需要说明的是，为了确定SMF中处于运行状态的第一PDU会话与待创建的PDU会话归属于同一个5G VN组，可以通过VN Group ID进行匹配，基于图7所示实施例的描述，在AMF发送的PDU会话创建请求中携带有目标VN Group ID，因此能够通过目标VN Group ID确定是否存在相匹配的第一PDU会话，实现SMF的动态选择，具体的匹配过程在此不多作赘述。
值得注意的是，除了上述动态选择SMF的方式以外，AMF还可以通过静态配置的方式选择目标SMF，例如在可选SMF中制定优先级，预先配置好首选SMF，在获取到可选SMF之后将首选SMF作为目标SMF，具体的优先级制定规则可以根据实际需求调整，在此不多作限定。
另外，在一实施例中，参照图9，在执行完图1所示实施例中的步骤S130之后，还包括但不限于有以下步骤：
步骤S910，建立目标SMF与目标VN组标识的关联关系。
需要说明的是，参考上述实施例的描述，为了实现图2所示的组网方式，可以通过VN Group ID匹配的方式判断可选SMF是否建立有同一5G VN组的第一PDU会话，为了减少匹配的复杂度，还可以在根据目标SMF创建PDU会话之后，建立VN Group ID与目标SMF的映射关系，并保存在AMF中，使得AMF在获取到新的PDU会话建立请求，并获取到目标VN Group ID之后，直接根据上述关联关系确定目标SMF，省去了从NRF进行SMF发现的操作，提高组网效率。
另外，参照图10，本申请的另一个实施例还提供了一种会话创建方法，应用于NRF，该会话创建方法包括但不限于有步骤S1010、步骤S1020和步骤S1030。
步骤S1010,获取AMF发送的SMF查询请求，SMF查询请求携带有目标VN组标识，目标VN组标识由AMF在获取到UE发起的会话建立请求的情况下获取，目标VN组标识归属于UE所归属目标VN组；
步骤S1020,根据目标VN组标识确定可选SMF集合，可选SMF集合包括至少一个可选SMF；
步骤S1030,将可选SMF集合反馈至AMF，以使AMF从可选SMF中确定目标SMF，并通过与目标SMF的交互创建归属于目标VN组的PDU会话。
需要说明的是，本实施例的技术方案与图1和图5所示实施例的技术方案相类似，区别主要在于本实施例的执行主体为NRF，为了叙述简便，在此不重复赘述。
另外，在一实施例中，参照图11，在执行图10所示实施例中的步骤S1010之前，还包括但不限于有以下步骤：
步骤S1110，获取待注册SMF发送的注册请求，其中，注册请求携带有至少一个关联VN组标识；
步骤S1120，生成针对待注册SMF的SMF注册信息，其中，SMF注册信息包括关联VN组标识。
需要说明的是，本实施例的技术方案图5所示实施例的技术方案相类似，区别主要在于本实施例的执行主体为NRF，为了叙述简便，在此不重复赘述。
另外，在一实施例中，参照图13，图10所示实施例中的步骤S1020还包括但不限于有以下步骤：
步骤S1310，根据目标VN组标识和SMF注册信息确定至少一个可选SMF，其中，可选SMF所对应的关联VN组标识与目标VN组标识相匹配；
步骤S1320，根据所确定的全部可选SMF得到可选SMF集合。
需要说明的是，本实施例的技术方案与图5所示实施例的技术方案相类似，区别主要在于本实施例的执行主体为NRF，为了叙述简便，在此不重复赘述。
另外，参照图14，本申请的另一个实施例还提供了一种会话创建方法，应用于SMF，该会话创建方法包括但不限于有步骤S1410和步骤S1420。
步骤S1410，获取AMF发送的PDU会话创建请求，其中，PDU会话创建请求携带有目标VN组标识，目标VN组标识归属于发起PDU会话建立请求的UE所归属的目标VN组，PDU会话创建请求由AMF在根据预设策略将SMF从可选SMF中确定目标SMF的情况下发送，可选SMF 由AMF根据目标组VN标识确定；
步骤S1420，创建归属于目标VN组的PDU会话。
需要说明的是，本实施例的技术方案与图1所示实施例的技术方案相类似，区别主要在于本实施例的执行主体为SMF，为了叙述简便，在此不重复赘述。
另外，在一实施例中，参照图15，在执行图14所示实施例中的步骤S1410之前，还包括但不限于有以下步骤：
步骤S1510，确定至少一个相关联的VN组的关联VN组标识；
步骤S1520，向NRF发送携带有关联VN组标识的注册请求，以使NRF将关联VN组标识保存至SMF注册信息。
需要说明的是，本实施例的技术方案与图5所示实施例的技术方案相类似，区别主要在于本实施例的执行主体为SMF，为了叙述简便，在此不重复赘述。
另外，为了更好地说明本实施例的技术方案，结合图16和图17所示的数据交互图，以下提出两个示例。
示例一：创建一个PDU会话，在本示例中，VN组标识以DNN粒度的VN Group ID为例，参考图18，本示例包括但不限于有以下步骤：
步骤S1810，UE注册到5GC，注册过程中向UDM获取用户签约信息，UDM响应消息中携带基于DNN粒度VN Group ID签约信息；
步骤S1820，UE触发5G VN组1下的PDU会话建立请求；
步骤S1830，AMF启动为5G VN组1的PDU会话选择SMF，向NRF发送SMF查询请求，携带DNN、切片、位置信息、5G VN组1的VN Group ID；
步骤S1840，NRF查询得到5G VN组1所归属的SMF1和SMF2，并在查询响应中携带给AMF；
步骤S1850，AMF通过静态配置或者动态选择方式，从SMF1和SMF2中选择一个SMF1，作为5G VN组1的首选SMF，并保存首选SMF的信息；
步骤S1860，AMF向SMF1，发送PDU会话创建请求消息，携带SMF1归属的5G VN组1的VN Group ID；
步骤S1870，SMF返回PDU会话创建响应；
步骤S1880，PDU会话建立成功。
示例二：在已经创建PDU会话的SMF中继续创建PDU会话，参考图19，本示例包括但不限于有以下步骤：
步骤S1910，UE注册到5GC，注册过程中向UDM获取用户签约信息，UDM响应消息中携带基于DNN粒度VN Group ID签约信息；
步骤S1920，UE在已使用DNN触发5G VN组1下的PDU会话建立请求的情况下，再次5G VN组1下的PDU会话建立请求；
步骤S1930，AMF启动为5G VN组1的PDU会话选择SMF，向NRF发送SMF查询请求，携带DNN、切片、位置信息、5G VN组1的VN Group ID；
步骤S1940，NRF查询得到5G VN组1所归属的SMF1和SMF2，并在查询响应中携带给AMF；
步骤S1950，AMF通过本地策略决策，与已建PDU会话选择相同SMF1；
步骤S1960，AMF向SMF1，发送PDU会话创建请求消息，携带SMF1归属的5G VN组1的VN Group ID；
步骤S1970，SMF返回PDU会话创建响应；
步骤S1980，PDU会话建立成功。
另外，参照图20，本申请的一个实施例还提供了一种网元，该网元2000包括：存储器2010、处理器2020及存储在存储器2010上并可在处理器2020上运行的计算机程序。
处理器2020和存储器2010可以通过总线或者其他方式连接。
实现上述实施例的会话创建方法所需的非暂态软件程序以及指令存储在存储器2010中，当被处理器2020执行时，执行上述实施例中的应用于网元的会话创建方法，例如，执行以上描述的图1中的方法步骤S110至步骤S130、图5中的方法步骤S510、图6中的方法步骤S610至步骤S620、图7中的方法步骤S710、图8中的方法步骤S810至步骤S820、图9中的方法步骤S910、图10中的方法步骤S1010至步骤S1030、图11中的方法步骤S1110至步骤S1120、图13中的方法步骤S1310至步骤S1320、图14中的方法步骤S1410至步骤S1420、图15中的方法步骤S1510至步骤S1520。
以上所描述的装置实施例仅仅是示意性的，其中作为分离部件说明的单元可以是或者也可以不是物理上分开的，即可以位于一个地方，或者也可以分别到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。
此外，本申请的一个实施例还提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机可执行指令，该计算机可执行指令被一个处理器或控制器执行，例如，被上述网元实施例中的一个处理器执行，可使得上述处理器执行上述实施例中的应用于网元的会话创建方法，例如，执行以上描述的图1中的方法步骤S110至步骤S130、图5中的方法步骤S510、图6中的方法步骤S610至步骤S620、图7中的方法步骤S710、图8中的方法步骤S810至步骤S820、图9中的方法步骤S910、图10中的方法步骤S1010至步骤S1030、图11中的方法步骤S1110至步骤S1120、图13中的方法步骤S1310至步骤S1320、图14中的方法步骤S1410至步骤S1420、图15中的方法步骤S1510至步骤S1520。
本申请实施例包括：当获取到UE发起的PDU会话建立请求，获取目标VN组标识，所述目标VN组标识归属于所述UE所归属的目标VN组；根据所述目标VN组标识确定至少一个可选SMF；根据预设策略从所述可选SMF中确定目标SMF，通过与所述目标SMF的交互创建归属于所述目标VN组的PDU会话。根据本申请实施例的技术方案，能够通过目标VN组标识确定至少一个可选SMF，再根据预设策略选择目标SMF，通过AMF实现了灵活选取SMF，有效提高了组网的灵活性，有利于实现灵活配置和灵活组网。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统可以被实施为软件、固件、硬件及其适当的组合。某些物理组件或所有物理组件可以被实施为由处理器，如中央处理器、数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分别在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域普通技术人员 公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。
以上是对本申请的部分实施进行了具体说明，但本申请的技术方案并不局限于上述实施方式，熟悉本领域的技术人员在不违背本申请本质的前提下还可作出种种的等同变形或替换，这些等同的变形或替换均包含在本申请权利要求所限定的范围内。

Claims (15)

  1. 一种会话创建方法，应用于AMF，所述方法包括：
    当获取到UE发起的PDU会话建立请求，获取目标VN组标识，所述目标VN组标识归属于所述UE所归属的目标VN组；
    根据所述目标VN组标识确定至少一个可选SMF；
    根据预设策略从所述可选SMF中确定目标SMF，通过与所述目标SMF的交互创建归属于所述目标VN组的PDU会话。
  2. 根据权利要求1所述的方法，其中，所述根据所述目标VN组标识确定至少一个可选SMF，包括：
    向NRF发送携带有所述目标VN组标识的SMF查询请求，以使所述NRF反馈可选SMF集合，其中，所述可选SMF集合包括至少一个所述可选SMF，所述可选SMF由所述NRF根据所述目标VN组标识和SMF注册信息确定，所述SMF注册信息包括与注册的SMF所关联的VN组标识。
  3. 根据权利要求1所述的方法，其中，所述获取目标VN组标识，包括：
    向UDM发送签约信息获取请求；
    获取所述UDM反馈的签约信息，其中，所述签约信息携带有所述目标VN组标识。
  4. 根据权利要求1所述的方法，其中，所述通过与所述目标SMF的交互创建归属于所述目标VN组的PDU会话，包括：
    向所述目标SMF发送携带有所述目标VN组标识的PDU会话创建请求，以使所述目标SMF根据所述目标VN组标识创建归属于所述目标VN组的PDU会话。
  5. 根据权利要求4所述的方法，其中，所述根据预设策略从所述可选SMF中确定目标SMF，包括：
    当第一PDU会话所归属的VN组的VN组标识与所述目标VN组标识相匹配，确定所述第一PDU会话所归属的所述可选SMF为所述目标SMF，其中，所述第一PDU会话处于运行状态；
    或者，
    将被配置为首选SMF的所述可选SMF确定为所述目标SMF。
  6. 根据权利要求1所述的方法，其中，在所述根据预设策略从所述可选SMF中确定目标SMF之后，所述方法还包括：
    建立所述目标SMF与所述目标VN组标识的关联关系。
  7. 根据权利要求2至6任意一项所述的方法，其中，所述VN组标识和所述目标VN组标识为基于DNN粒度的VN组标识。
  8. 一种会话创建方法，应用于NRF，所述方法包括：
    获取AMF发送的SMF查询请求，所述SMF查询请求携带有目标VN组标识，所述目标VN组标识由所述AMF在获取到UE发起的会话建立请求的情况下获取，所述目标VN组标识归属于所述UE所归属目标VN组；
    根据所述目标VN组标识确定可选SMF集合，所述可选SMF集合包括至少一个可选SMF；
    将所述可选SMF集合反馈至所述AMF，以使所述AMF从所述可选SMF中确定目标SMF，并通过与所述目标SMF的交互创建归属于所述目标VN组的PDU会话。
  9. 根据权利要求8所述的方法，其中，在所述获取所述AMF发送的SMF查询请求之前， 所述方法还包括：
    获取待注册SMF发送的注册请求，其中，所述注册请求携带有至少一个关联VN组标识；
    生成针对所述待注册SMF的SMF注册信息，其中，所述SMF注册信息包括所述关联VN组标识。
  10. 根据权利要求9所述的方法，其中，所述根据所述目标VN组标识确定可选SMF集合，包括：
    根据所述目标VN组标识和所述SMF注册信息确定至少一个可选SMF，其中，所述可选SMF所对应的所述关联VN组标识与所述目标VN组标识相匹配；
    根据所确定的全部所述可选SMF得到所述可选SMF集合。
  11. 根据权利要求8所述的方法，其中，所述关联VN组标识和所述目标VN组标识为基于DNN粒度的VN组标识。
  12. 一种会话创建方法，应用于SMF，所述方法包括：
    获取AMF发送的PDU会话创建请求，其中，所述PDU会话创建请求携带有目标VN组标识，所述目标VN组标识归属于发起PDU会话建立请求的UE所归属的目标VN组，所述PDU会话创建请求由所述AMF在根据预设策略将所述SMF从可选SMF中确定所述目标SMF的情况下发送，所述可选SMF由所述AMF根据所述目标组VN标识确定；
    创建归属于所述目标VN组的PDU会话。
  13. 根据权利要求12所述的方法，其中，在所述获取所述AMF发送的PDU会话创建请求之前，所述方法还包括：
    确定至少一个相关联的VN组的关联VN组标识；
    向NRF发送携带有所述关联VN组标识的注册请求，以使所述NRF将所述关联VN组标识保存至SMF注册信息。
  14. 一种网元，包括：存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，其中，所述处理器执行所述计算机程序时实现如权利要求1至7中任意一项所述的会话创建方法，或者，实现如权利要求8至11中任意一项所述的会话创建方法，或者，实现如权利要求12至13中任意一项所述的会话创建方法。
  15. 一种计算机可读存储介质，存储有计算机可执行指令，其中，所述计算机可执行指令用于执行如权利要求1至13中任意一项所述的会话创建方法。
PCT/CN2022/128728 2021-12-06 2022-10-31 会话创建方法、网元、存储介质 WO2023103649A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111511756.9A CN116233043A (zh) 2021-12-06 2021-12-06 会话创建方法、网元、存储介质
CN202111511756.9 2021-12-06

Publications (1)

Publication Number Publication Date
WO2023103649A1 true WO2023103649A1 (zh) 2023-06-15

Family

ID=86589779

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/128728 WO2023103649A1 (zh) 2021-12-06 2022-10-31 会话创建方法、网元、存储介质

Country Status (2)

Country Link
CN (1) CN116233043A (zh)
WO (1) WO2023103649A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200228936A1 (en) * 2019-01-15 2020-07-16 Peyman TALEBI FARD Session Establishment To Join A Group Communication
WO2021094025A1 (en) * 2019-11-14 2021-05-20 Nokia Technologies Oy Virtual network group with multiple session management functions
CN113225242A (zh) * 2021-07-07 2021-08-06 中兴通讯股份有限公司 跨区域通信方法、设备和存储介质
CN113260010A (zh) * 2021-07-06 2021-08-13 中兴通讯股份有限公司 Smf发现方法、装置、电子设备和介质
CN113545014A (zh) * 2019-01-14 2021-10-22 Idac控股公司 支持虚拟主机迁移的方法及无线发射/接收单元

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113545014A (zh) * 2019-01-14 2021-10-22 Idac控股公司 支持虚拟主机迁移的方法及无线发射/接收单元
US20200228936A1 (en) * 2019-01-15 2020-07-16 Peyman TALEBI FARD Session Establishment To Join A Group Communication
WO2021094025A1 (en) * 2019-11-14 2021-05-20 Nokia Technologies Oy Virtual network group with multiple session management functions
CN113260010A (zh) * 2021-07-06 2021-08-13 中兴通讯股份有限公司 Smf发现方法、装置、电子设备和介质
CN113225242A (zh) * 2021-07-07 2021-08-06 中兴通讯股份有限公司 跨区域通信方法、设备和存储介质

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHINA MOBILE, NOKIA, NOKIA SHANGHAI BELL: "Dedicated SMF selection for a 5G LAN group", 3GPP DRAFT; S2-1906566 WAS S2-1905434 5GLAN 23.501 SMF SET SENT VF, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. Reno, Nevada, USA; 20190513 - 20190517, 16 May 2019 (2019-05-16), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051736374 *

Also Published As

Publication number Publication date
CN116233043A (zh) 2023-06-06

Similar Documents

Publication Publication Date Title
EP3516920B1 (en) Method and system for user plane path selection
JP7522323B2 (ja) サービス統合におけるデータ伝送方法、装置、機器及びコンピュータープログラム
WO2023280166A1 (zh) 跨区域通信方法及设备、计算机可读存储介质
US12108307B2 (en) Communications method, apparatus and system
KR20230084322A (ko) 제한된 직접 검색을 위한 방법
WO2023280131A1 (zh) 会话管理方法、实体、网络设备和存储介质
EP3905612A1 (en) Method and device for calling application program interface
US20220021642A1 (en) Method for obtaining internet protocol ip address of terminal device, device, and system
WO2019015382A1 (zh) 一种别名管理方法及设备
WO2019001480A1 (zh) 虚拟机管理
CN109561054B (zh) 一种数据传输方法、控制器及接入设备
WO2019047769A1 (zh) 一种处理网络切片实例的方法、装置及系统
WO2023280066A1 (zh) 会话管理功能实体发现方法、网络功能节点、接入和移动性管理功能实体、电子设备和计算机可读存储介质
WO2020124930A1 (zh) 一种资源的调度、处理方法及装置
WO2021051922A1 (zh) 一种群组传输数据的方法、终端及计算机可读存储介质
WO2021109134A1 (zh) Mbms信息的获取、发送方法、终端设备及网元设备
WO2022027505A1 (en) User equipment authentication and authorization procedure for edge data network
WO2023103649A1 (zh) 会话创建方法、网元、存储介质
WO2024041505A1 (zh) 数据获取方法、装置和设备
CN112416495A (zh) 一种超融合云终端资源统一管理系统及方法
EP3934286B1 (en) Charging method and device
US20050198370A1 (en) Method for creating, deleting, and maintaining logical networks
US20170019872A1 (en) Registering, Deregistering and Standby Processing Methods and Systems for Terminal Peripheral
US20230074779A1 (en) Service relations in provisioning of communication service instance
WO2020259058A1 (zh) 一种策略和计费控制的实现方法及装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22903073

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE