WO2024001568A1 - Procédé et appareil de sélection d'élément de réseau smf, et dispositif électronique et support de stockage - Google Patents

Procédé et appareil de sélection d'élément de réseau smf, et dispositif électronique et support de stockage Download PDF

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Publication number
WO2024001568A1
WO2024001568A1 PCT/CN2023/093994 CN2023093994W WO2024001568A1 WO 2024001568 A1 WO2024001568 A1 WO 2024001568A1 CN 2023093994 W CN2023093994 W CN 2023093994W WO 2024001568 A1 WO2024001568 A1 WO 2024001568A1
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WO
WIPO (PCT)
Prior art keywords
nrf
smf network
network element
tsn
request response
Prior art date
Application number
PCT/CN2023/093994
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English (en)
Chinese (zh)
Inventor
袁浩
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 WO2024001568A1 publication Critical patent/WO2024001568A1/fr

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Classifications

    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/61—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources taking into account QoS or priority requirements

Definitions

  • the embodiments of the present invention relate to the field of core network technology, and in particular, to an SMF network element selection method, device, electronic equipment and storage medium.
  • the main network elements of the control plane are AMF, SMF and UDM network elements.
  • AMF Access Management Function
  • SMF Session Management Function
  • UDM User Data Management Function
  • AMF network elements need to select appropriate SMF network elements to serve users carrying specific DNN or slices. If the selection of SMF network elements is inappropriate, it will affect the 5G core network's support for the industrial control field. , as well as the utilization rate and service capabilities of the core network.
  • embodiments of the present invention provide an SMF network element selection method, device, and electronics. Equipment and storage media.
  • the embodiment of the present invention provides an SMF network element selection method, which is applied to AMF network elements.
  • the method includes: sending request information to the NRF during the PDU establishment or moving process, and receiving the request response information returned by the NRF; based on The request response information selects an SMF network element to establish a session.
  • Embodiments of the present invention also provide an SMF network element selection device, which is applied to AMF network elements.
  • the device includes: a sending and receiving module, configured to send request information to the NRF during the PDU establishment or movement process, and receive the The request response information returned by the NRF; the selection module is configured to select an SMF network element to establish a session based on the request response information.
  • An embodiment of the present invention also provides an electronic device, including: a processor and a memory for storing a computer program that can be run on the processor; wherein the processor is configured to perform the steps of any of the above methods when running the computer program. .
  • Embodiments of the present invention also provide a storage medium.
  • a computer program is stored in the storage medium.
  • the computer program is executed by a processor, the steps of any of the above methods are implemented.
  • Figure 1 is a schematic flow chart of an SMF network element selection method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the 5G system architecture according to the application embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the PDU establishment process according to the application embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the SMF selection process according to the application embodiment of the present invention.
  • Figure 5 is a schematic flow chart of the application embodiment of the present invention in which the AMF carries the Instance ID of the SMF contracted by UDM to query the NRF and select the SMF;
  • Figure 6 is a schematic flow chart of an application embodiment of the present invention in which AMF carrying TSN discovery factors fails to query NRF and rediscovers and selects SMF through DNN or slicing;
  • FIG. 7 is a schematic structural diagram of an SMF network element selection device according to an embodiment of the present invention.
  • Figure 8 is an internal structure diagram of a computer device according to an embodiment of the present invention.
  • An embodiment of the present invention provides an SMF network element selection method, as shown in Figure 1.
  • the method includes:
  • Step 101 During the PDU establishment or movement process, send request information to the NRF, and receive the request response information returned by the NRF;
  • Step 102 Based on the request response information, select an SMF network element to establish a session.
  • each SMF network element will register its capabilities to the NRF network element to facilitate the AMF network element to carry different discovery factors to query and select SMF network elements.
  • FIG. 2 is a 5G system architecture diagram.
  • the SMF network element itself supports TSN enhancement functions. After the SMF network element registers its TSN capabilities to the NRF, the AMF can select SMFs with TSN capabilities based on its own TSN function configuration to serve users carrying specific DNNs or slices, thereby satisfying the diversification of the 5G core network in the industrial control field. Support and improve the utilization rate and service capabilities of the core network.
  • this embodiment provides a method so that the AMF network element can prioritize the TSN capability based on the TSN capability registered by the SMF on the NRF.
  • Ability SMF to establish sessions to serve users carrying specific DNNs or slices can include the following four scenarios:
  • sending request information to NRF and receiving request response information returned by NRF includes:
  • the request information carries a TSN discovery factor;
  • the TSN discovery factor is used to indicate querying an SMF network element with TSN capabilities;
  • Receive request response information returned by the NRF where the request response information includes a list of SMF network elements with TSN capabilities.
  • an SMF network element when selecting an SMF network element to establish a session based on the request response information, an SMF network element can be selected from the list of SMF network elements with TSN capabilities based on the weight and priority of the SMF network element to establish the session. session.
  • the AMF carries the TSN discovery factor to query the NRF for SMFs that meet the TSN capability, obtains the SMF list based on the NRF query, and then selects an SMF in the SMF list to serve based on the weight and priority.
  • sending request information to NRF and receiving request response information returned by NRF includes:
  • the request information carries a DNN or slice discovery factor;
  • the DNN or slice discovery factor is used to instruct the query for a list of SMF network elements that meet specific conditions;
  • Receive request response information returned by the NRF where the request response information includes a list of SMF network elements indicating whether each SMF network element has TSN capabilities.
  • the query result returned by NRF indicates whether the SMF supports TSN capabilities.
  • AMF filters out SMFs that support TSN capabilities through its own configuration policy, and then filters out SMFs that support TSN capabilities through weight and priority. Prefer one SMF from the list of TSN-capable SMFs to serve.
  • sending request information to NRF and receiving request response information returned by NRF includes:
  • Receive request response information returned by the NRF where the request response information includes a list of SMF network elements with TSN capabilities.
  • an SMF network element when selecting an SMF network element to establish a session based on the request response information, an SMF network element can be selected from the list of SMF network elements with TSN capabilities based on the weight and priority of the SMF network element to establish the session. session.
  • UDM signs an SMF that supports TSN capabilities with AMF
  • sending request information to NRF and receiving request response information returned by NRF includes:
  • the request information carries TSN discovery factor; the TSN discovery factor is used to indicate Query SMF network elements with TSN capabilities;
  • the request information carries a DNN or slice discovery factor; the DNN or slice discovery factor is used to indicate SMF network element reselection;
  • Receive request response information returned by the NRF where the request response information includes a list of SMF network elements indicating whether each SMF network element has TSN capabilities.
  • AMF carries the TSN discovery factor to query NRF for SMFs that meet the conditions. If the query fails, AMF supports SMF reselection and uses DNN or slicing to perform SMF reselection to ensure that user PDU-related processes can succeed.
  • the SMF network element selection method provided by the embodiment of the present invention sends request information to the NRF during the PDU establishment or movement process, and receives the request response information returned by the NRF; based on the request response information, selects an SMF network element to establish session.
  • the embodiment of the present invention can optimize the SMF network element to establish a session based on the TSN capabilities of the SMF network element registered on the NRF, thereby realizing the 5G core network's support for the industrial control field and improving the utilization rate and service capabilities of the core network.
  • This embodiment provides a method that enables AMF network elements to prioritize SMFs with TSN capabilities based on the TSN capabilities registered by SMFs on the NRF, thereby enabling the 5G core network to support the industrial control field and ensuring the certainty and accuracy of Ethernet data. reliability. Contains the following scenarios:
  • AMF supports carrying a preferred TSN discovery factor through configuration control to query NRF and select an SMF.
  • the preferred TSN discovery factor is a field that can be used to indicate that NRF specifically queries a TSN-capable SMF. The specific process is shown in Figure 4, which includes the following steps:
  • AMF sends the Nnrf_NFDiscovery Request message, carrying the TSN discovery factor, to query NRF for SMF network elements with TSN capabilities;
  • NRF replies Nnrf_NFDiscovery Response to AMF and returns the queried SMF list, all of which support TSN capabilities
  • AMF Based on the weight and priority of the SMF, AMF selects an SMF from the SMF list to complete the session establishment.
  • AMF When AMF carries a DNN or slice discovery factor to query NRF for available SMFs, it can filter and select an SMF based on whether the SMF indicated in the query result returned by NRF supports TSN capabilities.
  • the specific process is shown in Figure 4, including the following steps:
  • AMF sends the Nnrf_NFDiscovery Request message, carrying the DNN or slice discovery factor, to query NRF for SMF network elements that meet the conditions;
  • NRF replies Nnrf_NFDiscovery Response to AMF returns the query to the SMF list, and indicates for each SMF whether it supports TSN capabilities;
  • AMF selects function switches based on its own TSN capability and filters out SMFs with TSN capabilities from the SMF list;
  • AMF Based on the weight and priority of the SMF, AMF selects an SMF from the filtered SMF list to complete the session establishment.
  • the AMF carries the Instance ID list of the UDM contracted SMF to query the NRF and select the SMF.
  • the specific process is shown in Figure 5, including the following steps:
  • AMF sends Nudm_SDM_Get Request to UDM, and UDM signs the Instance ID list of SMF with TSN capabilities to AMF through Nudm_SDM_Get Response;
  • AMF sends the Nnrf_NFDiscovery Request message, carrying the Instance ID list of the contracted SMF, to query NRF for SMF network elements with TSN capabilities;
  • NRF replies Nnrf_NFDiscovery Response to AMF and returns the queried SMF list, all of which support TSN capabilities
  • AMF Based on the weight and priority of the SMF, AMF selects an SMF from the SMF list to complete the session establishment.
  • AMF fails to query NRF carrying TSN discovery factors, and rediscovers and selects SMF through DNN or slicing.
  • the specific process is shown in Figure 6, including the following steps:
  • AMF sends the Nnrf_NFDiscovery Request message, carrying the TSN discovery factor, to query NRF for SMF network elements with TSN capabilities;
  • AMF carries discovery factors such as DNN or slicing and sends an Nnrf_NFDiscovery Request message for reselection. NRF replies with an Nnrf_NFDiscovery Response to AMF and returns the queried SMF list. Based on the weight and priority of the SMF, AMF selects an SMF from the SMF list to complete the session establishment.
  • the AMF network element preferentially selects SMFs with TSN capabilities based on the TSN capabilities registered by the SMFs on the NRF, thereby realizing the 5G core network's support for the industrial control field and improving the core network's utilization and service capabilities.
  • the embodiment of the present invention also provides an SMF network element selection device.
  • the SMF network element selection device 700 includes: a sending and receiving module 701 and a selection module 702; wherein,
  • the sending and receiving module 701 is configured to send request information to the NRF during the PDU establishment or movement process, and receive the request response information returned by the NRF;
  • the selection module 702 is configured to select an SMF network element to establish a session based on the request response information.
  • the sending and receiving module 701 and the selection module 702 can be implemented by the processor in the SMF network element selection device.
  • the embodiment of the present invention also provides a computer program product.
  • the computer program product includes computer instructions, and the computer instructions are stored in a computer-readable storage medium.
  • the processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the steps of the above method.
  • the embodiment of the present invention also provides an electronic device (computer device).
  • the computer device may be a terminal, and its internal structure diagram may be as shown in FIG. 8 .
  • the computer equipment includes a processor A01, a network interface A02, a display screen A04, an input device A05 and a memory (not shown in the figure) connected through a system bus.
  • the processor A01 of the computer device is configured to provide computing and control capabilities.
  • the memory of the computer device includes internal memory A03 and non-volatile storage medium A06.
  • the non-volatile storage medium A06 stores an operating system B01 and a computer program B02.
  • the internal memory A03 provides an environment for the execution of the operating system B01 and the computer program B02 in the non-volatile storage medium A06.
  • the network interface A02 of the computer device is used to communicate with external terminals through a network connection.
  • the computer program is executed by the processor A01, the method of any one of the above embodiments is implemented.
  • the display screen A04 of the computer device may be a liquid crystal display or Or an electronic ink display screen
  • the input device A05 of the computer equipment can be a touch layer covered on the display screen, or it can be a button, trackball or touch pad provided on the computer equipment shell, or it can be an external keyboard, touch panel tablet or mouse etc.
  • Figure 8 is only a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer equipment to which the solution of the present application is applied.
  • Specific computer equipment can May include more or fewer parts than shown, or combine certain parts, or have a different arrangement of parts.
  • the device provided by the embodiment of the present invention includes a processor, a memory, and a program stored in the memory and executable on the processor.
  • the processor executes the program, the method of any of the above embodiments is implemented.
  • embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions
  • the device implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.
  • These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device.
  • Instructions provide steps for implementing the functions specified in a process or processes of a flowchart diagram and/or a block or blocks of a block diagram.
  • a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
  • processors CPUs
  • input/output interfaces network interfaces
  • memory volatile and non-volatile memory
  • Memory may include non-volatile memory in computer-readable media, random access memory (RAM), and/or non-volatile memory in the form of read-only memory (ROM) or flash memory (flashRAM). Memory is an example of a computer-readable medium.
  • RAM random access memory
  • ROM read-only memory
  • flashRAM flash memory
  • Computer-readable media includes persistent and non-volatile, removable and non-removable media that can be constructed by any method or technology to achieve information storage.
  • Information may be computer-readable instructions, data structures, modules of programs, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), and read-only memory.
  • PRAM phase change memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • RAM random access memory
  • read-only memory read-only memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory or other memory technology
  • compact disc read-only memory CD-ROM
  • DVD digital versatile disc
  • Magnetic tape cassettes tape magnetic disk storage or other magnetic storage devices or any other non-transmission medium can be used to store information that can be accessed by a computing device.
  • computer-readable media does not include transitory media, such as modulated data signals and carrier waves.
  • non-volatile memory can be read-only memory (ROM, Read Only Memory), programmable read-only memory (PROM, Programmable Read-Only Memory), erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory).
  • ROM Read Only Memory
  • PROM Programmable Read-Only Memory
  • EPROM Erasable Programmable Read-Only Memory
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • FRAM Magnetic Random Access Memory
  • Flash Memory Magnetic Surface Memory , optical disk, or compact disc (CD-ROM, Compact Disc Read-Only Memory); magnetic surface memory can be disk storage or tape storage.
  • Volatile memory can be random access memory (RAM, Random Access Memory), which is used as an external cache.
  • RAM Random Access Memory
  • SRAM Static Random Access Memory
  • SSRAM Synchronous Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • SDRAM Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Link Dynamic Random Access Memory
  • DRRAM Direct Rambus Random Access Memory
  • Memories described in embodiments of the present invention are intended to include, but are not limited to, these and any other suitable types of memory.

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

Abstract

Selon des modes de réalisation, la présente invention concerne un procédé et un appareil de sélection d'élément de réseau SMF, ainsi qu'un dispositif électronique et un support de stockage. Le procédé consiste à : dans un processus d'établissement ou de déplacement de PDU, envoyer des informations de demande à une NRF, et recevoir des informations de réponse à la demande qui sont renvoyées par la NRF ; et sur la base des informations de réponse à la demande, sélectionner un élément de réseau SMF pour établir une session.
PCT/CN2023/093994 2022-06-29 2023-05-12 Procédé et appareil de sélection d'élément de réseau smf, et dispositif électronique et support de stockage WO2024001568A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210787737.7 2022-06-29
CN202210787737.7A CN117354358A (zh) 2022-06-29 2022-06-29 Smf网元选择方法、装置、电子设备及存储介质

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WO2024001568A1 true WO2024001568A1 (fr) 2024-01-04

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110035562A (zh) * 2018-01-12 2019-07-19 华为技术有限公司 会话管理方法、设备及系统
WO2021134760A1 (fr) * 2020-01-02 2021-07-08 Oppo广东移动通信有限公司 Procédé de commutation de mode de transmission, dispositif électronique et support de stockage
CN113939041A (zh) * 2020-07-13 2022-01-14 中国电信股份有限公司 用于建立协议数据单元会话的方法和系统
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CN110035562A (zh) * 2018-01-12 2019-07-19 华为技术有限公司 会话管理方法、设备及系统
WO2021134760A1 (fr) * 2020-01-02 2021-07-08 Oppo广东移动通信有限公司 Procédé de commutation de mode de transmission, dispositif électronique et support de stockage
CN113939041A (zh) * 2020-07-13 2022-01-14 中国电信股份有限公司 用于建立协议数据单元会话的方法和系统
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