WO2023208122A1 - Access switching method, amf entity, communication system, and storage medium - Google Patents

Access switching method, amf entity, communication system, and storage medium Download PDF

Info

Publication number
WO2023208122A1
WO2023208122A1 PCT/CN2023/091217 CN2023091217W WO2023208122A1 WO 2023208122 A1 WO2023208122 A1 WO 2023208122A1 CN 2023091217 W CN2023091217 W CN 2023091217W WO 2023208122 A1 WO2023208122 A1 WO 2023208122A1
Authority
WO
WIPO (PCT)
Prior art keywords
entity
access path
user plane
access
plane tunnel
Prior art date
Application number
PCT/CN2023/091217
Other languages
French (fr)
Chinese (zh)
Inventor
刘玉冰
Original Assignee
中国电信股份有限公司
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 中国电信股份有限公司 filed Critical 中国电信股份有限公司
Publication of WO2023208122A1 publication Critical patent/WO2023208122A1/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/12Setup of transport tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/30Connection release
    • H04W76/32Release of transport tunnels

Definitions

  • the present disclosure relates to the field of communication, and in particular to an access switching method, an AMF (Access and Mobility Management Function) entity, a communication system and a storage medium.
  • AMF Access and Mobility Management Function
  • Multi-access PDU (Protocol Data Unit, Protocol Data Unit) sessions simultaneously support UE (User Equipment, user terminal) to establish 3GPP (3rd Generation Partnership Project, 3rd Generation Partner Program) and non-3GPP access user plane resources, and also That is, it supports establishing PDU sessions through 3GPP access and non-3GPP access at the same time, and the PDU session identifiers of the two are the same.
  • UE User Equipment, user terminal
  • 3GPP 3rd Generation Partnership Project, 3rd Generation Partner Program
  • non-3GPP access user plane resources and also That is, it supports establishing PDU sessions through 3GPP access and non-3GPP access at the same time, and the PDU session identifiers of the two are the same.
  • an access switching method is provided, which is executed by an access and mobility management function AMF entity, including: according to a session establishment request sent by a user terminal through a first access path, through session management The function SMF entity sends a first instruction to the user plane function UPF entity, so that the UPF entity uses the first access path to establish a first user plane tunnel and establishes multiple access protocol data between the user terminal and the core network.
  • Unit MA PDU session according to the path switching request sent by the user terminal, send a second instruction to the UPF entity through the SMF entity, so that the UPF entity uses the second access path to establish a second user plane tunnel; by The SMF entity sends a third indication to the UPF entity, so that the UPF entity releases the first user plane tunnel and switches the MA PDU session from the first user plane tunnel to the second user plane tunnel.
  • the MA PDU session identifiers of the first user plane tunnel and the second user plane tunnel are the same.
  • the first access path and the second access path are registered for the user terminal according to a registration request sent by the user terminal.
  • the first access path is one of a trusted non-3rd Generation Partnership Project 3GPP access path and an untrusted non-3GPP access path; the second access path is the The other one of the trusted non-3GPP access path and the untrusted non-3GPP access path.
  • an access and mobility management function AMF entity including: a first processing module configured to, according to a session establishment request sent by the user terminal through the first access path, through the session
  • the management function SMF entity sends a first instruction to the user plane function UPF entity, so that the UPF entity uses the first access path to establish a first user plane tunnel and establishes a multi-access protocol between the user terminal and the core network.
  • a second processing module configured to send a second indication to the UPF entity through the SMF entity according to the path switching request sent by the user terminal, so that the UPF entity utilizes the second access The path establishes a second user plane tunnel;
  • a third processing module is configured to send a third indication to the UPF entity through the SMF entity, so that the UPF entity releases the first user plane tunnel and converts the MA PDU The session is switched from the first user plane tunnel to the second user plane tunnel.
  • the MA PDU session identifiers of the first user plane tunnel and the second user plane tunnel are the same.
  • the above-mentioned AMF entity further includes: a fourth processing module configured to register the first access path and the second access path for the user terminal according to the registration request sent by the user terminal. path.
  • the first access path is one of a trusted non-3rd Generation Partnership Project 3GPP access path and an untrusted non-3GPP access path; the second access path is the The other one of the trusted non-3GPP access path and the untrusted non-3GPP access path.
  • an access and mobility management function AMF entity including: a memory configured to store instructions; a processor coupled to the memory, and the processor is configured to store instructions based on the memory Implement the method described in any of the above embodiments.
  • a communication system including: an access and mobility management function AMF entity as described in any of the above embodiments; a user terminal configured to provide The AMF entity sends a session establishment request; when the access path switching condition is met, sends a path switching request to the AMF entity; the user plane function UPF entity is configured to pass the session management function SMF entity according to the AMF entity
  • the first instruction sent is to establish a first user plane tunnel using the first access path and establish a multiple access protocol data unit MA PDU session between the user terminal and the core network; according to the AMF entity, the The second instruction sent by the SMF entity uses the second access path to establish the second user plane tunnel. Channel; according to the third instruction sent by the AMF entity through the SMF entity, release the first user plane tunnel and switch the MA PDU session from the first user plane tunnel to the second user plane tunnel.
  • the above system further includes a policy control function PCF entity configured to update the rules of the MA PDU session according to the fourth indication sent by the SMF entity.
  • the rules of the MA PDU session include first rules related to the upstream of the MA PDU session and second rules related to the downstream of the MA PDU session.
  • the first rule is an ATSSS rule for access traffic selection, switching and offloading
  • the second rule is an interface rule between the SMF entity and the UPF entity.
  • the interface rules are N4 interface rules.
  • the user terminal is configured to send a registration request to the AMF entity in order to register the first access path and the second access path.
  • a non-transitory computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the methods described in any of the above embodiments are implemented. method.
  • Figure 1 is a schematic flowchart of an access switching method according to an embodiment of the present disclosure
  • Figure 2 is a schematic structural diagram of an AMF entity according to an embodiment of the present disclosure
  • Figure 3 is a schematic structural diagram of an AMF entity according to another embodiment of the present disclosure.
  • Figure 4 is a schematic structural diagram of an AMF entity according to another embodiment of the present disclosure.
  • Figure 5 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure.
  • Figure 6 is a schematic flowchart of an access switching method according to another embodiment of the present disclosure.
  • any specific values are to be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values.
  • Access paths and untrusted non-3GPP access paths access 5GC, and switching between trusted non-3GPP access paths and untrusted non-3GPP access paths limits MA (Multiple Access, multiple access) PDU Session application scenarios.
  • the present disclosure provides an access switching method, which can simultaneously support access to 5GC through trusted non-3GPP access paths and non-trusted non-3GPP access paths, as well as trusted non-3GPP access paths and non-trusted non-3GPP access paths. Handover between non-3GPP access paths thus enriches the application scenarios of fixed network and mobile network integration, thereby better integrating network resources.
  • FIG. 1 is a schematic flowchart of an access switching method according to an embodiment of the present disclosure.
  • the following access switching methods are performed by the AMF entity.
  • the first access path and the second access path are registered for the user terminal according to the registration request sent by the user terminal.
  • the first access path is one of a trusted non-3GPP access path and an untrusted non-3GPP access path
  • the second access path is one of a trusted non-3GPP access path and an untrusted non-3GPP access path. Another one of them.
  • step 102 according to the path switching request sent by the user terminal, a second instruction is sent to the UPF entity through the SMF entity, so that the UPF entity uses the second access path to establish a second user plane tunnel.
  • the multi-access PDU session identifiers of the first user plane tunnel and the second user plane tunnel are the same.
  • the network side device such as PMF (Performance Monitoring Function) in the UPF entity
  • the user terminal side can trigger access path switching.
  • step 103 the SMF entity sends a third indication to the UPF entity, so that the UPF entity releases the first user plane tunnel, thereby switching the multi-access PDU session from the first user plane tunnel to the second user plane tunnel.
  • the UE after the UE establishes a multi-access PDU session through a non-3GPP access path and triggers the access switching condition, the UE establishes a user plane tunnel through another non-3GPP access path. , and the user plane tunnel of the initial non-3GPP access path is triggered by the network to better adapt to the current multi-access PDU session, thereby achieving support for MA PDU sessions.
  • FIG. 2 is a schematic structural diagram of an AMF entity according to an embodiment of the present disclosure. As shown in FIG. 2 , the AMF entity includes a first processing module 21 , a second processing module 22 and a third processing module 23 .
  • the first processing module 21 is configured to send a first indication to the UPF entity through the SMF entity according to the session establishment request sent by the user terminal through the first access path, so that the UPF entity establishes the first user plane tunnel using the first access path, Thus, a multi-access PDU session is established between the user terminal and the core network.
  • the second processing module 22 is configured to send a second instruction to the UPF entity through the SMF entity according to the path switching request sent by the user terminal, so that the UPF entity uses the second access path to establish the second user plane tunnel.
  • the multi-access PDU session identifiers of the first user plane tunnel and the second user plane tunnel are the same.
  • the network side device eg, PMF in the UPF entity
  • the user terminal side may trigger access path switching.
  • the third processing module 23 is configured to send a third indication to the UPF entity through the SMF entity, so that the UPF entity releases the first user plane tunnel, thereby switching the multi-access PDU session from the first user plane tunnel to the second user plane tunnel.
  • Figure 3 is a schematic structural diagram of an AMF entity according to another embodiment of the present disclosure. The difference between Figure 3 and Figure 2 is that in the embodiment shown in Figure 3, the AMF entity also includes a fourth processing module 24.
  • the fourth processing module 24 is configured to register the first access path and the second access path for the user terminal according to the registration request sent by the user terminal.
  • the first access path is one of a trusted non-3GPP access path and an untrusted non-3GPP access path
  • the second access path is one of a trusted non-3GPP access path and an untrusted non-3GPP access path. Another one of them.
  • FIG 4 is a schematic structural diagram of an AMF entity according to yet another embodiment of the present disclosure.
  • the AMF entity includes a memory 41 and a processor 42.
  • the memory 41 is used to store instructions, and the processor 42 is coupled to the memory 41.
  • the processor 42 is configured to execute the method involved in any embodiment in FIG. 1 based on the instructions stored in the memory.
  • the AMF entity also includes a communication interface 43 for information exchange with other devices.
  • the AMF entity also includes a bus 44, through which the processor 42, the communication interface 43, and the memory 41 complete communication with each other.
  • the memory 41 may include high-speed RAM memory, or may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
  • the memory 41 may also be a memory array.
  • the memory 41 may also be divided into blocks, and the blocks may be combined into virtual volumes according to certain rules.
  • processor 42 may be a central processing unit (CPU), or may be an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present disclosure.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the present disclosure also relates to a non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the method related to any embodiment in Figure 1 is implemented.
  • FIG. 5 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure.
  • the communication system includes a user terminal 51 , an AMF entity 52 , an SMF entity 53 and a UPF entity 54 .
  • the AMF entity 52 is the AMF entity related to any embodiment in FIG. 2 to FIG. 4 .
  • the user terminal 51 is configured to send a session establishment request to the AMF entity 52 through the first access path; when the access path switching condition is met, send a path switching request to the AMF entity 52.
  • the UPF entity 54 is configured to establish a first user plane tunnel using the first access path according to the first instruction sent by the AMF entity 52 through the SMF entity 53, thereby establishing a multi-access PDU session between the user terminal and the core network; according to The AMF entity 52 establishes the second user plane tunnel using the second access path through the second instruction sent by the SMF entity 53; and releases the first user plane tunnel according to the third instruction sent by the AMF entity 52 through the SMF entity 53, thereby connecting multiple The access PDU session is switched from the first user plane tunnel to the second user plane tunnel.
  • the user terminal 51 is configured to send a registration request to the AMF entity 52 in order to register the first access path and the second access path.
  • the system also includes a PCF (Policy Control Function) entity 55.
  • the PCF entity 55 is configured to update the rules of the multi-access PDU session according to the fourth indication sent by the SMF entity 53 .
  • the rules for the multi-access PDU session include a first rule related to the upstream of the multi-access PDU session and a second rule related to the downstream of the multi-access PDU session.
  • the first rule is the ATSSS (Access Traffic Steering, Switching and Splitting, access traffic selection, switching and splitting) rule
  • the second rule is the interface rule between the SMF entity and the UPF entity.
  • the second rule is an interface rule between the SMF entity and the UPF entity and is an N4 interface rule.
  • Figure 6 is a schematic flowchart of an access switching method according to another embodiment of the present disclosure.
  • step 601 the user terminal sends a registration request to the AMF entity through the N3IWF (Non-3GPP InterWorking Function)/TNGF (Trusted Non-3GPP Gateway Function) entity.
  • N3IWF Non-3GPP InterWorking Function
  • TNGF Trusted Non-3GPP Gateway Function
  • the AMF entity registers the first access path and the second access path for the user terminal.
  • the first access path is one of a trusted non-3GPP access path and an untrusted non-3GPP access path
  • the second access path is one of a trusted non-3GPP access path and an untrusted non-3GPP access path. Another one of them.
  • the user terminal uses the first access path registered by the user terminal to send a session establishment request to the AMF entity through the N3IWF/TNGF entity.
  • the AMF entity sends a first instruction to the UPF entity through the SMF entity so that the UPF entity uses the first access path.
  • the first user plane tunnel is established on the incoming path, thereby establishing a multi-access PDU session between the user terminal and the core network.
  • step 603 when the access path switching conditions are met, the user terminal sends a path switching request to the AMF entity through the N3IWF/TNGF entity, and the AMF entity sends a second instruction to the UPF entity through the SMF entity, so that the UPF entity uses the user terminal to register
  • the second access path establishes a second user plane tunnel.
  • the multi-access PDU session identifiers of the first user plane tunnel and the second user plane tunnel are the same.
  • the network side device eg, PMF in the UPF entity
  • the user terminal side may trigger access path switching.
  • step 604 the AMF entity sends a third indication to the UPF entity through the SMF entity, so that the UPF entity releases the first user plane tunnel.
  • step 605 the SMF entity sends a fourth indication to the PCF entity, so that the PCF entity updates the rules of the multi-access PDU session, thereby switching the multi-access PDU session from the first user plane tunnel to the second user plane tunnel.
  • the rules for the multi-access PDU session include a first rule related to the upstream of the multi-access PDU session and a second rule related to the downstream of the multi-access PDU session.
  • the first rule is the ATSSS rule
  • the second rule is the N4 interface rule between the SMF entity and the UPF entity.
  • the functional units described above can be implemented as a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (Digital processor) for performing the functions described in this disclosure.
  • PLC programmable logic controller
  • Digital processor Digital processor
  • DSP Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array

Landscapes

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

Abstract

The present disclosure provides an access switching method, an AMF entity, a communication system, and a storage medium. The access switching method comprises: sending a first indication to a UPF entity by means of an SMF entity according to a session establishment request sent by a user terminal by means of a first access path, so that the UPF entity establishes a first user plane tunnel using the first access path, and an MA PDU session is established between the user terminal and a core network; sending a second indication to the UPF entity by means of the SMF entity according to a path switching request sent by the user terminal, so that the UPF entity establishes a second user plane tunnel using a second access path; and sending a third indication to the UPF entity by means of the SMF entity, so that the UPF entity releases the first user plane tunnel, and the MA PDU session is switched from the first user plane tunnel to the second user plane tunnel.

Description

接入切换方法、AMF实体、通信系统和存储介质Access switching method, AMF entity, communication system and storage medium
相关申请的交叉引用Cross-references to related applications
本申请是以CN申请号为202210460587.9,申请日为2022年4月28日的申请为基础,并主张其优先权,该CN申请的公开内容在此作为整体引入本申请中。This application is based on the application with CN application number 202210460587.9 and the filing date is April 28, 2022, and claims its priority. The disclosure content of the CN application is hereby incorporated into this application as a whole.
技术领域Technical field
本公开涉及通信领域,特别涉及一种接入切换方法、AMF(Access and Mobility Management Function,接入和移动性管理功能)实体、通信系统和存储介质。The present disclosure relates to the field of communication, and in particular to an access switching method, an AMF (Access and Mobility Management Function) entity, a communication system and a storage medium.
背景技术Background technique
多接入PDU(Protocol Data Unit,协议数据单元)会话同时支持UE(User Equipment,用户终端)建立3GPP(3rd Generation Partnership Project,第三代合作伙伴计划)和非3GPP接入的用户面资源,也即支持同时通过3GPP接入和非3GPP接入建立PDU会话,其中二者的PDU会话标识相同。Multi-access PDU (Protocol Data Unit, Protocol Data Unit) sessions simultaneously support UE (User Equipment, user terminal) to establish 3GPP (3rd Generation Partnership Project, 3rd Generation Partner Program) and non-3GPP access user plane resources, and also That is, it supports establishing PDU sessions through 3GPP access and non-3GPP access at the same time, and the PDU session identifiers of the two are the same.
发明内容Contents of the invention
根据本公开实施例的第一方面,提供一种接入切换方法,由接入和移动性管理功能AMF实体执行,包括:根据用户终端通过第一接入路径发送的会话建立请求,通过会话管理功能SMF实体向用户面功能UPF实体发送第一指示,以便所述UPF实体利用所述第一接入路径建立第一用户面隧道,在所述用户终端和核心网之间建立多接入协议数据单元MA PDU会话;根据所述用户终端发送的路径切换请求,通过所述SMF实体向所述UPF实体发送第二指示,以便所述UPF实体利用第二接入路径建立第二用户面隧道;通过所述SMF实体向所述UPF实体发送第三指示,以便所述UPF实体释放所述第一用户面隧道,将所述MA PDU会话从所述第一用户面隧道切换到所述第二用户面隧道。According to a first aspect of an embodiment of the present disclosure, an access switching method is provided, which is executed by an access and mobility management function AMF entity, including: according to a session establishment request sent by a user terminal through a first access path, through session management The function SMF entity sends a first instruction to the user plane function UPF entity, so that the UPF entity uses the first access path to establish a first user plane tunnel and establishes multiple access protocol data between the user terminal and the core network. Unit MA PDU session; according to the path switching request sent by the user terminal, send a second instruction to the UPF entity through the SMF entity, so that the UPF entity uses the second access path to establish a second user plane tunnel; by The SMF entity sends a third indication to the UPF entity, so that the UPF entity releases the first user plane tunnel and switches the MA PDU session from the first user plane tunnel to the second user plane tunnel.
在一些实施例中,所述第一用户面隧道和所述第二用户面隧道的MA PDU会话标识相同。In some embodiments, the MA PDU session identifiers of the first user plane tunnel and the second user plane tunnel are the same.
在一些实施例中,根据所述用户终端发送的注册请求,为所述用户终端注册所述第一接入路径和所述第二接入路径。 In some embodiments, the first access path and the second access path are registered for the user terminal according to a registration request sent by the user terminal.
在一些实施例中,所述第一接入路径为可信非第三代合作伙伴计划3GPP接入路径和非可信非3GPP接入路径中的一条;所述第二接入路径为所述可信非3GPP接入路径和所述非可信非3GPP接入路径中的另一条。In some embodiments, the first access path is one of a trusted non-3rd Generation Partnership Project 3GPP access path and an untrusted non-3GPP access path; the second access path is the The other one of the trusted non-3GPP access path and the untrusted non-3GPP access path.
根据本公开实施例的第二方面,提供一种接入和移动性管理功能AMF实体,包括:第一处理模块,被配置为根据用户终端通过第一接入路径发送的会话建立请求,通过会话管理功能SMF实体向用户面功能UPF实体发送第一指示,以便所述UPF实体利用所述第一接入路径建立第一用户面隧道,在所述用户终端和核心网之间建立多接入协议数据单元MA PDU会话;第二处理模块,被配置为根据所述用户终端发送的路径切换请求,通过所述SMF实体向所述UPF实体发送第二指示,以便所述UPF实体利用第二接入路径建立第二用户面隧道;第三处理模块,被配置为通过所述SMF实体向所述UPF实体发送第三指示,以便所述UPF实体释放所述第一用户面隧道,将所述MA PDU会话从所述第一用户面隧道切换到所述第二用户面隧道。According to a second aspect of the embodiment of the present disclosure, an access and mobility management function AMF entity is provided, including: a first processing module configured to, according to a session establishment request sent by the user terminal through the first access path, through the session The management function SMF entity sends a first instruction to the user plane function UPF entity, so that the UPF entity uses the first access path to establish a first user plane tunnel and establishes a multi-access protocol between the user terminal and the core network. Data unit MA PDU session; a second processing module configured to send a second indication to the UPF entity through the SMF entity according to the path switching request sent by the user terminal, so that the UPF entity utilizes the second access The path establishes a second user plane tunnel; a third processing module is configured to send a third indication to the UPF entity through the SMF entity, so that the UPF entity releases the first user plane tunnel and converts the MA PDU The session is switched from the first user plane tunnel to the second user plane tunnel.
在一些实施例中,所述第一用户面隧道和所述第二用户面隧道的MA PDU会话标识相同。In some embodiments, the MA PDU session identifiers of the first user plane tunnel and the second user plane tunnel are the same.
在一些实施例中,上述AMF实体还包括:第四处理模块,被配置为根据所述用户终端发送的注册请求,为所述用户终端注册所述第一接入路径和所述第二接入路径。In some embodiments, the above-mentioned AMF entity further includes: a fourth processing module configured to register the first access path and the second access path for the user terminal according to the registration request sent by the user terminal. path.
在一些实施例中,所述第一接入路径为可信非第三代合作伙伴计划3GPP接入路径和非可信非3GPP接入路径中的一条;所述第二接入路径为所述可信非3GPP接入路径和所述非可信非3GPP接入路径中的另一条。In some embodiments, the first access path is one of a trusted non-3rd Generation Partnership Project 3GPP access path and an untrusted non-3GPP access path; the second access path is the The other one of the trusted non-3GPP access path and the untrusted non-3GPP access path.
根据本公开实施例的第三方面,提供一种接入和移动性管理功能AMF实体,包括:存储器,被配置为存储指令;处理器,耦合到存储器,处理器被配置为基于存储器存储的指令执行实现如上述任一实施例所述的方法。According to a third aspect of an embodiment of the present disclosure, an access and mobility management function AMF entity is provided, including: a memory configured to store instructions; a processor coupled to the memory, and the processor is configured to store instructions based on the memory Implement the method described in any of the above embodiments.
根据本公开实施例的第四方面,提供一种通信系统,包括:如上述任一实施例所述的接入和移动性管理功能AMF实体;用户终端,被配置为通过第一接入路径向所述AMF实体发送会话建立请求;在接入路径切换条件满足的情况下,向所述AMF实体发送路径切换请求;用户面功能UPF实体,被配置为根据所述AMF实体通过会话管理功能SMF实体发送的第一指示,利用所述第一接入路径建立第一用户面隧道,在所述用户终端和核心网之间建立多接入协议数据单元MA PDU会话;根据所述AMF实体通过所述SMF实体发送的第二指示,利用第二接入路径建立第二用户面隧 道;根据所述AMF实体通过所述SMF实体发送的第三指示,释放所述第一用户面隧道,将所述MA PDU会话从所述第一用户面隧道切换到所述第二用户面隧道。According to a fourth aspect of an embodiment of the present disclosure, a communication system is provided, including: an access and mobility management function AMF entity as described in any of the above embodiments; a user terminal configured to provide The AMF entity sends a session establishment request; when the access path switching condition is met, sends a path switching request to the AMF entity; the user plane function UPF entity is configured to pass the session management function SMF entity according to the AMF entity The first instruction sent is to establish a first user plane tunnel using the first access path and establish a multiple access protocol data unit MA PDU session between the user terminal and the core network; according to the AMF entity, the The second instruction sent by the SMF entity uses the second access path to establish the second user plane tunnel. Channel; according to the third instruction sent by the AMF entity through the SMF entity, release the first user plane tunnel and switch the MA PDU session from the first user plane tunnel to the second user plane tunnel. .
在一些实施例中,上述系统还包括策略控制功能PCF实体,被配置为根据所述SMF实体发送的第四指示,更新所述所述MA PDU会话的规则。In some embodiments, the above system further includes a policy control function PCF entity configured to update the rules of the MA PDU session according to the fourth indication sent by the SMF entity.
在一些实施例中,所述MA PDU会话的规则包括与所述MA PDU会话的上行流相关的第一规则和所述MA PDU会话的下行流相关的第二规则。In some embodiments, the rules of the MA PDU session include first rules related to the upstream of the MA PDU session and second rules related to the downstream of the MA PDU session.
在一些实施例中,所述第一规则为接入流量选择、切换和分流ATSSS规则;所述第二规则为所述SMF实体和所述UPF实体之间的接口规则。In some embodiments, the first rule is an ATSSS rule for access traffic selection, switching and offloading; the second rule is an interface rule between the SMF entity and the UPF entity.
在一些实施例中,所述接口规则为N4接口规则。In some embodiments, the interface rules are N4 interface rules.
在一些实施例中,所述用户终端被配置为向所述AMF实体发送注册请求,以便注册所述第一接入路径和所述第二接入路径。In some embodiments, the user terminal is configured to send a registration request to the AMF entity in order to register the first access path and the second access path.
根据本公开实施例的第五方面,提供一种非瞬态计算机可读存储介质,其中,计算机可读存储介质存储有计算机指令,指令被处理器执行时实现如上述任一实施例所述的方法。According to a fifth aspect of an embodiment of the present disclosure, a non-transitory computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the methods described in any of the above embodiments are implemented. method.
通过以下参照附图对本公开的示例性实施例的详细描述,本公开的其它特征及其优点将会变得清楚。Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.
附图说明Description of the drawings
为了更清楚地说明本公开实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。In order to explain the embodiments of the present disclosure or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.
图1为本公开一个实施例的接入切换方法的流程示意图;Figure 1 is a schematic flowchart of an access switching method according to an embodiment of the present disclosure;
图2为本公开一个实施例的AMF实体的结构示意图;Figure 2 is a schematic structural diagram of an AMF entity according to an embodiment of the present disclosure;
图3为本公开另一个实施例的AMF实体的结构示意图;Figure 3 is a schematic structural diagram of an AMF entity according to another embodiment of the present disclosure;
图4为本公开又一个实施例的AMF实体的结构示意图;Figure 4 is a schematic structural diagram of an AMF entity according to another embodiment of the present disclosure;
图5为本公开一个实施例的通信系统的结构示意图;Figure 5 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure;
图6为本公开另一个实施例的接入切换方法的流程示意图。Figure 6 is a schematic flowchart of an access switching method according to another embodiment of the present disclosure.
具体实施方式 Detailed ways
下面将结合本公开实施例中的附图,对本公开实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本公开一部分实施例,而不是全部的实施例。以下对至少一个示例性实施例的描述实际上仅仅是说明性的,决不作为对本公开及其应用或使用的任何限制。基于本公开中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本公开保护的范围。The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses. Based on the embodiments in this disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of this disclosure.
除非另外具体说明,否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本公开的范围。The relative arrangement of components and steps, numerical expressions, and numerical values set forth in these examples do not limit the scope of the disclosure unless otherwise specifically stated.
同时,应当明白,为了便于描述,附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。At the same time, it should be understood that, for convenience of description, the dimensions of various parts shown in the drawings are not drawn according to actual proportional relationships.
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论,但在适当情况下,所述技术、方法和设备应当被视为授权说明书的一部分。Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the authorized specification.
在这里示出和讨论的所有示例中,任何具体值应被解释为仅仅是示例性的,而不是作为限制。因此,示例性实施例的其它示例可以具有不同的值。In all examples shown and discussed herein, any specific values are to be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values.
应注意到:相似的标号和字母在下面的附图中表示类似项,因此,一旦某一项在一个附图中被定义,则在随后的附图中不需要对其进行进一步讨论。It should be noted that similar reference numerals and letters refer to similar items in the following figures, so that once an item is defined in one figure, it does not need further discussion in subsequent figures.
发明人注意到,相关规范目前已支持一个多接入PDU会话同时通过3GPP接入路径和非3GPP接入路径接入5GC(5G Core,5G核心网),但并未同时支持通过可信非3GPP接入路径以及非可信非3GPP接入路径接入5GC、以及可信非3GPP接入路径以及非可信非3GPP接入路径之间的切换,限制了MA(Multiple Access,多接入)PDU会话的应用场景。The inventor noticed that the relevant specifications currently support a multi-access PDU session to access 5GC (5G Core, 5G core network) through 3GPP access paths and non-3GPP access paths at the same time, but do not support access to 5GC through trusted non-3GPP at the same time. Access paths and untrusted non-3GPP access paths access 5GC, and switching between trusted non-3GPP access paths and untrusted non-3GPP access paths limits MA (Multiple Access, multiple access) PDU Session application scenarios.
据此,本公开提供一种接入切换方法,从而能够同时支持通过可信非3GPP接入路径以及非可信非3GPP接入路径接入5GC、以及可信非3GPP接入路径以及非可信非3GPP接入路径之间的切换,由此丰富了固网和移动网融合的应用场景,从而更好地融合网络资源。Accordingly, the present disclosure provides an access switching method, which can simultaneously support access to 5GC through trusted non-3GPP access paths and non-trusted non-3GPP access paths, as well as trusted non-3GPP access paths and non-trusted non-3GPP access paths. Handover between non-3GPP access paths thus enriches the application scenarios of fixed network and mobile network integration, thereby better integrating network resources.
图1为本公开一个实施例的接入切换方法的流程示意图。在一些实施例中,下列的接入切换方法由AMF实体执行。Figure 1 is a schematic flowchart of an access switching method according to an embodiment of the present disclosure. In some embodiments, the following access switching methods are performed by the AMF entity.
在步骤101,根据用户终端通过第一接入路径发送的会话建立请求,通过SMF(Service Management Function,服务管理功能)实体向UPF(User Plane Function,用户面功能)实体发送第一指示,以便UPF实体利用第一接入路径建立第一用户面隧道,从而在用户终端和核心网之间建立多接入PDU会话。 In step 101, according to the session establishment request sent by the user terminal through the first access path, a first instruction is sent to the UPF (User Plane Function, user plane function) entity through the SMF (Service Management Function, service management function) entity, so that the UPF The entity uses the first access path to establish a first user plane tunnel, thereby establishing a multi-access PDU session between the user terminal and the core network.
在一些实施例中,根据用户终端发送的注册请求,为用户终端注册第一接入路径和第二接入路径。In some embodiments, the first access path and the second access path are registered for the user terminal according to the registration request sent by the user terminal.
例如,第一接入路径为可信非3GPP接入路径和非可信非3GPP接入路径中的一条,第二接入路径为可信非3GPP接入路径和非可信非3GPP接入路径中的另一条。For example, the first access path is one of a trusted non-3GPP access path and an untrusted non-3GPP access path, and the second access path is one of a trusted non-3GPP access path and an untrusted non-3GPP access path. Another one of them.
在步骤102,根据用户终端发送的路径切换请求,通过SMF实体向UPF实体发送第二指示,以便UPF实体利用第二接入路径建立第二用户面隧道。In step 102, according to the path switching request sent by the user terminal, a second instruction is sent to the UPF entity through the SMF entity, so that the UPF entity uses the second access path to establish a second user plane tunnel.
在一些实施例中,第一用户面隧道和第二用户面隧道的多接入PDU会话标识相同。In some embodiments, the multi-access PDU session identifiers of the first user plane tunnel and the second user plane tunnel are the same.
在一些实施例中,网络侧设备(例如UPF实体中的PMF(Performance Monitoring Function,性能监测功能))或用户终端侧可触发接入路径切换。In some embodiments, the network side device (such as PMF (Performance Monitoring Function) in the UPF entity) or the user terminal side can trigger access path switching.
在步骤103,通过SMF实体向UPF实体发送第三指示,以便UPF实体释放第一用户面隧道,从而将多接入PDU会话从第一用户面隧道切换到第二用户面隧道。In step 103, the SMF entity sends a third indication to the UPF entity, so that the UPF entity releases the first user plane tunnel, thereby switching the multi-access PDU session from the first user plane tunnel to the second user plane tunnel.
在本公开上述实施例提供的接入切换方法中,在UE通过一条非3GPP接入路径建立多接入PDU会话并触发接入切换条件后,UE通过另一条非3GPP接入路径建立用户面隧道,并由网络触发释放初始非3GPP接入路径的用户面隧道,以更好地适应当前的多接入PDU会话,从而实现对MA PDU会话的支持。In the access switching method provided by the above embodiments of the present disclosure, after the UE establishes a multi-access PDU session through a non-3GPP access path and triggers the access switching condition, the UE establishes a user plane tunnel through another non-3GPP access path. , and the user plane tunnel of the initial non-3GPP access path is triggered by the network to better adapt to the current multi-access PDU session, thereby achieving support for MA PDU sessions.
图2为本公开一个实施例的AMF实体的结构示意图。如图2所示,AMF实体包括第一处理模块21、第二处理模块22和第三处理模块23。Figure 2 is a schematic structural diagram of an AMF entity according to an embodiment of the present disclosure. As shown in FIG. 2 , the AMF entity includes a first processing module 21 , a second processing module 22 and a third processing module 23 .
第一处理模块21被配置为根据用户终端通过第一接入路径发送的会话建立请求,通过SMF实体向UPF实体发送第一指示,以便UPF实体利用第一接入路径建立第一用户面隧道,从而在用户终端和核心网之间建立多接入PDU会话。The first processing module 21 is configured to send a first indication to the UPF entity through the SMF entity according to the session establishment request sent by the user terminal through the first access path, so that the UPF entity establishes the first user plane tunnel using the first access path, Thus, a multi-access PDU session is established between the user terminal and the core network.
第二处理模块22被配置为根据用户终端发送的路径切换请求,通过SMF实体向UPF实体发送第二指示,以便UPF实体利用第二接入路径建立第二用户面隧道。The second processing module 22 is configured to send a second instruction to the UPF entity through the SMF entity according to the path switching request sent by the user terminal, so that the UPF entity uses the second access path to establish the second user plane tunnel.
在一些实施例中,第一用户面隧道和第二用户面隧道的多接入PDU会话标识相同。In some embodiments, the multi-access PDU session identifiers of the first user plane tunnel and the second user plane tunnel are the same.
在一些实施例中,网络侧设备(例如UPF实体中的PMF)或用户终端侧可触发接入路径切换。In some embodiments, the network side device (eg, PMF in the UPF entity) or the user terminal side may trigger access path switching.
第三处理模块23被配置为通过SMF实体向UPF实体发送第三指示,以便UPF实体释放第一用户面隧道,从而将多接入PDU会话从第一用户面隧道切换到第二用户面隧道。 The third processing module 23 is configured to send a third indication to the UPF entity through the SMF entity, so that the UPF entity releases the first user plane tunnel, thereby switching the multi-access PDU session from the first user plane tunnel to the second user plane tunnel.
图3为本公开另一个实施例的AMF实体的结构示意图。图3和图2的不同之处在于,在图3所示的实施例中,AMF实体还包括第四处理模块24。Figure 3 is a schematic structural diagram of an AMF entity according to another embodiment of the present disclosure. The difference between Figure 3 and Figure 2 is that in the embodiment shown in Figure 3, the AMF entity also includes a fourth processing module 24.
第四处理模块24被配置为根据用户终端发送的注册请求,为用户终端注册第一接入路径和第二接入路径。The fourth processing module 24 is configured to register the first access path and the second access path for the user terminal according to the registration request sent by the user terminal.
例如,第一接入路径为可信非3GPP接入路径和非可信非3GPP接入路径中的一条,第二接入路径为可信非3GPP接入路径和非可信非3GPP接入路径中的另一条。For example, the first access path is one of a trusted non-3GPP access path and an untrusted non-3GPP access path, and the second access path is one of a trusted non-3GPP access path and an untrusted non-3GPP access path. Another one of them.
图4为本公开又一个实施例的AMF实体的结构示意图。如图4所示,AMF实体包括存储器41和处理器42。Figure 4 is a schematic structural diagram of an AMF entity according to yet another embodiment of the present disclosure. As shown in Figure 4, the AMF entity includes a memory 41 and a processor 42.
存储器41用于存储指令,处理器42耦合到存储器41,处理器42被配置为基于存储器存储的指令执行实现如图1中任一实施例涉及的方法。The memory 41 is used to store instructions, and the processor 42 is coupled to the memory 41. The processor 42 is configured to execute the method involved in any embodiment in FIG. 1 based on the instructions stored in the memory.
如图4所示,该AMF实体还包括通信接口43,用于与其它设备进行信息交互。同时,该AMF实体还包括总线44,处理器42、通信接口43、以及存储器41通过总线44完成相互间的通信。As shown in Figure 4, the AMF entity also includes a communication interface 43 for information exchange with other devices. At the same time, the AMF entity also includes a bus 44, through which the processor 42, the communication interface 43, and the memory 41 complete communication with each other.
存储器41可以包含高速RAM存储器,也可还包括非易失性存储器(non-volatile memory),例如至少一个磁盘存储器。存储器41也可以是存储器阵列。存储器41还可能被分块,并且块可按一定的规则组合成虚拟卷。The memory 41 may include high-speed RAM memory, or may also include non-volatile memory (non-volatile memory), such as at least one disk memory. The memory 41 may also be a memory array. The memory 41 may also be divided into blocks, and the blocks may be combined into virtual volumes according to certain rules.
此外,处理器42可以是一个中央处理器CPU,或者可以是专用集成电路ASIC,或是被配置成实施本公开实施例的一个或多个集成电路。Additionally, processor 42 may be a central processing unit (CPU), or may be an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present disclosure.
本公开同时还涉及一种非瞬态计算机可读存储介质,其中计算机可读存储介质存储有计算机指令,指令被处理器执行时实现如图1中任一实施例涉及的方法。The present disclosure also relates to a non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the method related to any embodiment in Figure 1 is implemented.
图5为本公开一个实施例的通信系统的结构示意图。如图6所示,通信系统包括用户终端51、AMF实体52、SMF实体53和UPF实体54。AMF实体52为图2至图4中任一实施例涉及的AMF实体。Figure 5 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure. As shown in FIG. 6 , the communication system includes a user terminal 51 , an AMF entity 52 , an SMF entity 53 and a UPF entity 54 . The AMF entity 52 is the AMF entity related to any embodiment in FIG. 2 to FIG. 4 .
用户终端51被配置为通过第一接入路径向AMF实体52发送会话建立请求;在接入路径切换条件满足的情况下,向AMF实体52发送路径切换请求。The user terminal 51 is configured to send a session establishment request to the AMF entity 52 through the first access path; when the access path switching condition is met, send a path switching request to the AMF entity 52.
UPF实体54被配置为根据AMF实体52通过SMF实体53发送的第一指示,利用第一接入路径建立第一用户面隧道,从而在用户终端和核心网之间建立多接入PDU会话;根据AMF实体52通过SMF实体53发送的第二指示,利用第二接入路径建立第二用户面隧道;根据AMF实体52通过SMF实体53发送的第三指示,释放第一用户面隧道,从而将多接入PDU会话从第一用户面隧道切换到第二用户面隧道。在一 些实施例中,用户终端51被配置为向AMF实体52发送注册请求,以便注册第一接入路径和第二接入路径。The UPF entity 54 is configured to establish a first user plane tunnel using the first access path according to the first instruction sent by the AMF entity 52 through the SMF entity 53, thereby establishing a multi-access PDU session between the user terminal and the core network; according to The AMF entity 52 establishes the second user plane tunnel using the second access path through the second instruction sent by the SMF entity 53; and releases the first user plane tunnel according to the third instruction sent by the AMF entity 52 through the SMF entity 53, thereby connecting multiple The access PDU session is switched from the first user plane tunnel to the second user plane tunnel. In a In some embodiments, the user terminal 51 is configured to send a registration request to the AMF entity 52 in order to register the first access path and the second access path.
在一些实施例中,如图5所示,系统还包括PCF(Policy Control Function,策略控制功能)实体55。PCF实体55被配置为根据SMF实体53发送的第四指示,更新多接入PDU会话的规则。In some embodiments, as shown in Figure 5, the system also includes a PCF (Policy Control Function) entity 55. The PCF entity 55 is configured to update the rules of the multi-access PDU session according to the fourth indication sent by the SMF entity 53 .
在一些实施例中,多接入PDU会话的规则包括与多接入PDU会话的上行流相关的第一规则和多接入PDU会话的下行流相关的第二规则。In some embodiments, the rules for the multi-access PDU session include a first rule related to the upstream of the multi-access PDU session and a second rule related to the downstream of the multi-access PDU session.
例如,第一规则为ATSSS(Access Traffic Steering,Switching and Splitting,接入流量选择、切换和分流)规则,第二规则为SMF实体和UPF实体之间的接口规则。For example, the first rule is the ATSSS (Access Traffic Steering, Switching and Splitting, access traffic selection, switching and splitting) rule, and the second rule is the interface rule between the SMF entity and the UPF entity.
例如,第二规则为SMF实体和UPF实体之间的接口规则为N4接口规则。For example, the second rule is an interface rule between the SMF entity and the UPF entity and is an N4 interface rule.
图6为本公开另一个实施例的接入切换方法的流程示意图。Figure 6 is a schematic flowchart of an access switching method according to another embodiment of the present disclosure.
在步骤601,用户终端通过N3IWF(Non-3GPP InterWorking Function,非3GPP互通功能)/TNGF(Trusted Non-3GPP Gateway Function,可信非3GPP网关功能)实体向AMF实体发送注册请求。In step 601, the user terminal sends a registration request to the AMF entity through the N3IWF (Non-3GPP InterWorking Function)/TNGF (Trusted Non-3GPP Gateway Function) entity.
AMF实体为用户终端注册第一接入路径和第二接入路径。The AMF entity registers the first access path and the second access path for the user terminal.
例如,第一接入路径为可信非3GPP接入路径和非可信非3GPP接入路径中的一条,第二接入路径为可信非3GPP接入路径和非可信非3GPP接入路径中的另一条。For example, the first access path is one of a trusted non-3GPP access path and an untrusted non-3GPP access path, and the second access path is one of a trusted non-3GPP access path and an untrusted non-3GPP access path. Another one of them.
在步骤602,用户终端利用用户终端注册的第一接入路径,通过N3IWF/TNGF实体向AMF实体发送会话建立请求,AMF实体通过SMF实体向UPF实体发送第一指示,以便UPF实体利用第一接入路径建立第一用户面隧道,从而在用户终端和核心网之间建立多接入PDU会话。In step 602, the user terminal uses the first access path registered by the user terminal to send a session establishment request to the AMF entity through the N3IWF/TNGF entity. The AMF entity sends a first instruction to the UPF entity through the SMF entity so that the UPF entity uses the first access path. The first user plane tunnel is established on the incoming path, thereby establishing a multi-access PDU session between the user terminal and the core network.
在步骤603,在接入路径切换条件满足的情况下,用户终端通过N3IWF/TNGF实体向AMF实体发送路径切换请求,AMF实体通过SMF实体向UPF实体发送第二指示,以便UPF实体利用用户终端注册的第二接入路径建立第二用户面隧道。In step 603, when the access path switching conditions are met, the user terminal sends a path switching request to the AMF entity through the N3IWF/TNGF entity, and the AMF entity sends a second instruction to the UPF entity through the SMF entity, so that the UPF entity uses the user terminal to register The second access path establishes a second user plane tunnel.
在一些实施例中,第一用户面隧道和第二用户面隧道的多接入PDU会话标识相同。In some embodiments, the multi-access PDU session identifiers of the first user plane tunnel and the second user plane tunnel are the same.
在一些实施例中,网络侧设备(例如UPF实体中的PMF)或用户终端侧可触发接入路径切换。In some embodiments, the network side device (eg, PMF in the UPF entity) or the user terminal side may trigger access path switching.
在步骤604,AMF实体通过SMF实体向UPF实体发送第三指示,以便UPF实体释放第一用户面隧道。 In step 604, the AMF entity sends a third indication to the UPF entity through the SMF entity, so that the UPF entity releases the first user plane tunnel.
在步骤605,SMF实体向PCF实体发送第四指示,以便PCF实体更新多接入PDU会话的规则,从而将多接入PDU会话从第一用户面隧道切换到第二用户面隧道。In step 605, the SMF entity sends a fourth indication to the PCF entity, so that the PCF entity updates the rules of the multi-access PDU session, thereby switching the multi-access PDU session from the first user plane tunnel to the second user plane tunnel.
在一些实施例中,多接入PDU会话的规则包括与多接入PDU会话的上行流相关的第一规则和多接入PDU会话的下行流相关的第二规则。In some embodiments, the rules for the multi-access PDU session include a first rule related to the upstream of the multi-access PDU session and a second rule related to the downstream of the multi-access PDU session.
例如,第一规则为ATSSS规则,第二规则为SMF实体和UPF实体之间的N4接口规则。For example, the first rule is the ATSSS rule, and the second rule is the N4 interface rule between the SMF entity and the UPF entity.
在一些实施例中,在上面所描述的功能单元可以实现为用于执行本公开所描述功能的通用处理器、可编程逻辑控制器(Programmable Logic Controller,简称:PLC)、数字信号处理器(Digital Signal Processor,简称:DSP)、专用集成电路(Application Specific Integrated Circuit,简称:ASIC)、现场可编程门阵列(Field-Programmable Gate Array,简称:FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。In some embodiments, the functional units described above can be implemented as a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (Digital processor) for performing the functions described in this disclosure. Signal Processor (DSP for short), Application Specific Integrated Circuit (ASIC for short), Field-Programmable Gate Array (FPGA for short) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, or any appropriate combination thereof.
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成,也可以通过程序来指令相关的硬件完成,所述的程序可以存储于一种计算机可读存储介质中,上述提到的存储介质可以是只读存储器,磁盘或光盘等。Those of ordinary skill in the art can understand that all or part of the steps to implement the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium. The above-mentioned The storage media mentioned can be read-only memory, magnetic disks or optical disks, etc.
本公开的描述是为了示例和描述起见而给出的,而并不是无遗漏的或者将本公开限于所公开的形式。很多修改和变化对于本领域的普通技术人员而言是显然的。选择和描述实施例是为了更好说明本公开的原理和实际应用,并且使本领域的普通技术人员能够理解本公开从而设计适于特定用途的带有各种修改的各种实施例。 The description of the present disclosure has been presented for the purposes of illustration and description, and is not intended to be exhaustive or to limit the disclosure to the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure and design various embodiments with various modifications as are suited to the particular use contemplated.

Claims (16)

  1. 一种接入切换方法,由接入和移动性管理功能AMF实体执行,包括:An access handover method, executed by the Access and Mobility Management Function AMF entity, including:
    根据用户终端通过第一接入路径发送的会话建立请求,通过会话管理功能SMF实体向用户面功能UPF实体发送第一指示,以便所述UPF实体利用所述第一接入路径建立第一用户面隧道,在所述用户终端和核心网之间建立多接入协议数据单元MA PDU会话;According to the session establishment request sent by the user terminal through the first access path, the session management function SMF entity sends a first instruction to the user plane function UPF entity, so that the UPF entity uses the first access path to establish the first user plane Tunnel to establish a multiple access protocol data unit MA PDU session between the user terminal and the core network;
    根据所述用户终端发送的路径切换请求,通过所述SMF实体向所述UPF实体发送第二指示,以便所述UPF实体利用第二接入路径建立第二用户面隧道;According to the path switching request sent by the user terminal, send a second instruction to the UPF entity through the SMF entity, so that the UPF entity uses the second access path to establish a second user plane tunnel;
    通过所述SMF实体向所述UPF实体发送第三指示,以便所述UPF实体释放所述第一用户面隧道,将所述MA PDU会话从所述第一用户面隧道切换到所述第二用户面隧道。The SMF entity sends a third instruction to the UPF entity, so that the UPF entity releases the first user plane tunnel and switches the MA PDU session from the first user plane tunnel to the second user plane. face tunnel.
  2. 根据权利要求1所述的方法,其中,The method of claim 1, wherein,
    所述第一用户面隧道和所述第二用户面隧道的MA PDU会话标识相同。The MA PDU session identifiers of the first user plane tunnel and the second user plane tunnel are the same.
  3. 根据权利要求1-2中任一项所述的方法,还包括:The method according to any one of claims 1-2, further comprising:
    根据所述用户终端发送的注册请求,为所述用户终端注册所述第一接入路径和所述第二接入路径。Register the first access path and the second access path for the user terminal according to the registration request sent by the user terminal.
  4. 根据权利要求3所述的方法,其中,The method of claim 3, wherein,
    所述第一接入路径为可信非第三代合作伙伴计划3GPP接入路径和非可信非3GPP接入路径中的一条;The first access path is one of a trusted non-3rd Generation Partnership Project 3GPP access path and an untrusted non-3GPP access path;
    所述第二接入路径为所述可信非3GPP接入路径和所述非可信非3GPP接入路径中的另一条。The second access path is the other one of the trusted non-3GPP access path and the untrusted non-3GPP access path.
  5. 一种接入和移动性管理功能AMF实体,包括:An access and mobility management function AMF entity, including:
    第一处理模块,被配置为根据用户终端通过第一接入路径发送的会话建立请求,通过会话管理功能SMF实体向用户面功能UPF实体发送第一指示,以便所述UPF实体利用所述第一接入路径建立第一用户面隧道,在所述用户终端和核心网之间建立多 接入协议数据单元MA PDU会话;The first processing module is configured to send a first indication to the user plane function UPF entity through the session management function SMF entity according to the session establishment request sent by the user terminal through the first access path, so that the UPF entity utilizes the first The access path establishes a first user plane tunnel, and establishes multiple Access protocol data unit MA PDU session;
    第二处理模块,被配置为根据所述用户终端发送的路径切换请求,通过所述SMF实体向所述UPF实体发送第二指示,以便所述UPF实体利用第二接入路径建立第二用户面隧道;The second processing module is configured to send a second instruction to the UPF entity through the SMF entity according to the path switching request sent by the user terminal, so that the UPF entity establishes a second user plane using the second access path. tunnel;
    第三处理模块,被配置为通过所述SMF实体向所述UPF实体发送第三指示,以便所述UPF实体释放所述第一用户面隧道,将所述MA PDU会话从所述第一用户面隧道切换到所述第二用户面隧道。A third processing module configured to send a third indication to the UPF entity through the SMF entity, so that the UPF entity releases the first user plane tunnel and transfers the MA PDU session from the first user plane The tunnel is switched to the second user plane tunnel.
  6. 根据权利要求5所述的AMF实体,其中,The AMF entity of claim 5, wherein,
    所述第一用户面隧道和所述第二用户面隧道的MA PDU会话标识相同。The MA PDU session identifiers of the first user plane tunnel and the second user plane tunnel are the same.
  7. 根据权利要求5-6中任一项所述的AMF实体,还包括:The AMF entity according to any one of claims 5-6, further comprising:
    第四处理模块,被配置为根据所述用户终端发送的注册请求,为所述用户终端注册所述第一接入路径和所述第二接入路径。The fourth processing module is configured to register the first access path and the second access path for the user terminal according to the registration request sent by the user terminal.
  8. 根据权利要求7所述的AMF实体,其中,The AMF entity of claim 7, wherein,
    所述第一接入路径为可信非第三代合作伙伴计划3GPP接入路径和非可信非3GPP接入路径中的一条;The first access path is one of a trusted non-3rd Generation Partnership Project 3GPP access path and an untrusted non-3GPP access path;
    所述第二接入路径为所述可信非3GPP接入路径和所述非可信非3GPP接入路径中的另一条。The second access path is the other one of the trusted non-3GPP access path and the untrusted non-3GPP access path.
  9. 一种接入和移动性管理功能AMF实体,包括:An access and mobility management function AMF entity, including:
    存储器,被配置为存储指令;memory configured to store instructions;
    处理器,耦合到存储器,处理器被配置为基于存储器存储的指令执行实现如权利要求1-4中任一项所述的方法。A processor, coupled to the memory, configured to execute the method according to any one of claims 1-4 based on instructions stored in the memory.
  10. 一种通信系统,包括:A communications system including:
    如权利要求5-9中任一项所述的接入和移动性管理功能AMF实体;The access and mobility management function AMF entity according to any one of claims 5-9;
    用户终端,被配置为通过第一接入路径向所述AMF实体发送会话建立请求;在接入路径切换条件满足的情况下,向所述AMF实体发送路径切换请求; The user terminal is configured to send a session establishment request to the AMF entity through the first access path; when the access path switching condition is met, send a path switching request to the AMF entity;
    用户面功能UPF实体,被配置为根据所述AMF实体通过会话管理功能SMF实体发送的第一指示,利用所述第一接入路径建立第一用户面隧道,在所述用户终端和核心网之间建立多接入协议数据单元MA PDU会话;根据所述AMF实体通过所述SMF实体发送的第二指示,利用第二接入路径建立第二用户面隧道;根据所述AMF实体通过所述SMF实体发送的第三指示,释放所述第一用户面隧道,将所述MA PDU会话从所述第一用户面隧道切换到所述第二用户面隧道。The user plane function UPF entity is configured to establish a first user plane tunnel using the first access path according to the first instruction sent by the AMF entity through the session management function SMF entity, between the user terminal and the core network. Establish a multiple access protocol data unit MA PDU session; according to the second instruction sent by the AMF entity through the SMF entity, establish a second user plane tunnel using the second access path; according to the AMF entity through the SMF The third instruction sent by the entity is to release the first user plane tunnel and switch the MA PDU session from the first user plane tunnel to the second user plane tunnel.
  11. 根据权利要求10所述的系统,还包括:The system of claim 10, further comprising:
    策略控制功能PCF实体,被配置为根据所述SMF实体发送的第四指示,更新所述MA PDU会话的规则。The policy control function PCF entity is configured to update the rules of the MA PDU session according to the fourth indication sent by the SMF entity.
  12. 根据权利要求11所述的AMF实体,其中,The AMF entity of claim 11, wherein,
    所述MA PDU会话的规则包括与所述MA PDU会话的上行流相关的第一规则和所述MA PDU会话的下行流相关的第二规则。The rules of the MA PDU session include first rules related to the upstream of the MA PDU session and second rules related to the downstream of the MA PDU session.
  13. 根据权利要求12所述的AMF实体,其中,The AMF entity of claim 12, wherein,
    所述第一规则为接入流量选择、切换和分流ATSSS规则;The first rule is the ATSSS rule for access traffic selection, switching and offloading;
    所述第二规则为所述SMF实体和所述UPF实体之间的接口规则。The second rule is an interface rule between the SMF entity and the UPF entity.
  14. 根据权利要求13所述的AMF实体,其中,The AMF entity of claim 13, wherein,
    所述接口规则为N4接口规则。The interface rules are N4 interface rules.
  15. 根据权利要求10所述的系统,其中,The system of claim 10, wherein:
    所述用户终端被配置为向所述AMF实体发送注册请求,以便注册所述第一接入路径和所述第二接入路径。The user terminal is configured to send a registration request to the AMF entity in order to register the first access path and the second access path.
  16. 一种非瞬态计算机可读存储介质,其中,计算机可读存储介质存储有计算机指令,指令被处理器执行时实现如权利要求1-4中任一项所述的方法。 A non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the method according to any one of claims 1-4 is implemented.
PCT/CN2023/091217 2022-04-28 2023-04-27 Access switching method, amf entity, communication system, and storage medium WO2023208122A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210460587.9A CN117015071A (en) 2022-04-28 2022-04-28 Access switching method, AMF entity and communication system
CN202210460587.9 2022-04-28

Publications (1)

Publication Number Publication Date
WO2023208122A1 true WO2023208122A1 (en) 2023-11-02

Family

ID=88517921

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/091217 WO2023208122A1 (en) 2022-04-28 2023-04-27 Access switching method, amf entity, communication system, and storage medium

Country Status (2)

Country Link
CN (1) CN117015071A (en)
WO (1) WO2023208122A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111436087A (en) * 2019-01-15 2020-07-21 电信科学技术研究院有限公司 PDU session switching method and device
CN112788680A (en) * 2019-11-07 2021-05-11 华为技术有限公司 Data transmission method and related equipment
WO2021187783A1 (en) * 2020-03-19 2021-09-23 Lg Electronics Inc. Support of service continuity between snpn and plmn
CN114339921A (en) * 2021-12-21 2022-04-12 中国联合网络通信集团有限公司 Session migration method, session management function entity and terminal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111436087A (en) * 2019-01-15 2020-07-21 电信科学技术研究院有限公司 PDU session switching method and device
CN112788680A (en) * 2019-11-07 2021-05-11 华为技术有限公司 Data transmission method and related equipment
WO2021187783A1 (en) * 2020-03-19 2021-09-23 Lg Electronics Inc. Support of service continuity between snpn and plmn
CN114339921A (en) * 2021-12-21 2022-04-12 中国联合网络通信集团有限公司 Session migration method, session management function entity and terminal

Also Published As

Publication number Publication date
CN117015071A (en) 2023-11-07

Similar Documents

Publication Publication Date Title
CN108574969B (en) Connection processing method and device in multi-access scene
WO2020147761A1 (en) Pdu session switching method and apparatus therefor
WO2019223660A1 (en) Session management method, apparatus and system
WO2018161796A1 (en) Connection processing method and apparatus in multi-access scenario
WO2018112897A1 (en) Method and device for session activation, and system
WO2020001562A1 (en) Communication method and apparatus
WO2021120744A1 (en) Method and apparatus for recovering ims service
WO2018006306A1 (en) Network connection configuration method and apparatus
WO2020259688A1 (en) User plane re-routing method and device
WO2020200028A1 (en) Data processing method and data processing apparatus
KR20210051485A (en) METHOD FOR PERFORMING QoS MONITORING BY UPF NODE INCLUDING PLURALITY OF UPF INSTANCES AND UPF NODE PERFORMING METHOD
JP2021524204A (en) Quality of service monitoring methods, systems, and equipment
US11005959B1 (en) Systems and methods for asynchronous publish-subscribe messaging and acknowledgments
WO2019076182A1 (en) Connection processing method and device
JP7206390B2 (en) Data transmission methods and devices
EP2850912B1 (en) Efficient distribution of signaling messages in a mobility access gateway or local mobility anchor
CN104521201B (en) Processing method, forward node and the control node of forward node
WO2023208122A1 (en) Access switching method, amf entity, communication system, and storage medium
WO2023093285A1 (en) Communication method, and terminal
EP4277340A1 (en) Data unit processing method and apparatus, and node and storage medium
WO2022099484A1 (en) Identifier sending method and communication apparatus
TW202239245A (en) Method and related apparatus for configuring evolved packet system non- access stratum security algorithm
WO2021047443A1 (en) Method and apparatus for forwarding service data packet
WO2021008402A1 (en) Method for supporting port association, method for selecting gateway, and communication device
EP3908042A1 (en) Communication method and apparatus

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: 23795554

Country of ref document: EP

Kind code of ref document: A1