WO2019033944A1 - Procédé et dispositif d'envoi d'informations et d'exécution d'opération, et entité fonctionnelle de gestion de session - Google Patents

Procédé et dispositif d'envoi d'informations et d'exécution d'opération, et entité fonctionnelle de gestion de session Download PDF

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Publication number
WO2019033944A1
WO2019033944A1 PCT/CN2018/098676 CN2018098676W WO2019033944A1 WO 2019033944 A1 WO2019033944 A1 WO 2019033944A1 CN 2018098676 W CN2018098676 W CN 2018098676W WO 2019033944 A1 WO2019033944 A1 WO 2019033944A1
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Prior art keywords
traffic
application
information
mode
indication information
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PCT/CN2018/098676
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English (en)
Chinese (zh)
Inventor
周晓云
周星月
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中兴通讯股份有限公司
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Publication of WO2019033944A1 publication Critical patent/WO2019033944A1/fr

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    • 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
    • H04L67/148—Migration or transfer of 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/50—Service provisioning or reconfiguring

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for transmitting information, performing an operation, and an apparatus, and a session management function entity.
  • FIG. 1 is a schematic diagram of the 5G architecture in the related art.
  • the functions of the main functional entities are as follows:
  • the base station is responsible for air interface resource scheduling of the terminal accessing the network and connection management of the air interface;
  • the Access and Mobility Management Function is mainly responsible for access authentication, authorization, and mobility management.
  • the Session Management Function is mainly responsible for session management and Internet Protocol (IP) address allocation.
  • the User Plane Function is a connection point of a Protocol Data Unit (PDU) session, and is responsible for routing, forwarding, and policy execution of packet data.
  • PDU Protocol Data Unit
  • PCF Policy Control Function
  • FIG. 2 is a schematic diagram of a multi-homed traffic steering architecture in the related art.
  • the network introduces a branching point (BP) and allocates it in the user plane link of the UE.
  • a new anchor UPF and the network will also assign another IP address to the UE.
  • the bifurcation point forwards the data of the UE with the new IP address to the new anchor UPF (UPF2), while the data with the old IP address is still forwarded to the old anchor UPF (UPF1).
  • the bifurcation point aggregates data from UPF1 and UPF2 and forwards it to the base station.
  • the fork point may be integrated with UPF2.
  • FIG. 3 is a schematic diagram of a traffic steering architecture using an uplink classifier (UL CL) in the related art, as shown in FIG. 3, in which a UL is inserted in a user plane link of a UE.
  • UL CL can directly offload the services that the local data network can provide.
  • the UL CL can be introduced during the PDU session establishment process or after the PDU session is established, when needed. In order to allow the UL CL to properly divert the business, the correct shunt filter needs to be installed on the UL CL.
  • FIG. 4 is a schematic diagram of a process for affecting user plane routing in the related art. As shown in FIG. 4, the method includes:
  • Step 400 The UE accesses the application through a PDU session established with UPF1.
  • Step 401 An Applicant Function (AF) generates an AF traffic steering request.
  • the content of the request includes identifying traffic information that needs to be directed (including DNN and slice selection information, AF-Service-Identifier, application identifier or traffic filter information), and traffic routing requirement information of the N6 interface (route document identifier).
  • Location information (DNAI list) of traffic-oriented applications, information of UEs requiring traffic guidance, and the like.
  • Step 402a If the AF is untrustworthy or the AF request is not for an ongoing PDU session, the AF sends a message to the NEF.
  • Step 402b The NEF authorizes the request and may perform some necessary mapping, such as obtaining DNN and slice selection information, DNAI list, and routing document identifier according to the AF-Service-Identifier.
  • the NEF sends the request to the PCF.
  • Step 402c When the AF request is for an ongoing PDU session, the AF directly sends a request message to the corresponding PCF.
  • Step 403 The PCF returns an acknowledgement message to the AF.
  • Step 404 The PCF determines each of the existing PDU-CAN sessions affected by the AF request. For each PDU-CAN session, the PCF updates the policy on the SMF through the PDU-CAN session. The SMF returns a confirmation message.
  • Step 405 The SMF performs a corresponding operation to reconfigure the user plane of the PDU session according to the newly issued policy of the PCF: 1) inserting UL CL or BP in the user plane path; 2) assigning a new UE to the UE when using Multi-homing Address Prefix 3) Updates the traffic steering rules for UPF on the target DNAI.
  • Step 406 The SMF notifies the AF of the application execution result. This notification may be forwarded to the AF via NEF.
  • the AF does not know what mode the SMF will select when transmitting the traffic steering request (ie, UL CL or BP), but because the application layer provides different information to the network in different modes, and The information and sequence in which the application layer needs to interact with the UE and the interaction between the AF and the network is also different. Therefore, according to the prior art, if the AF provides the same information to the network without knowing the mode selected by the SMF, the traffic guidance cannot be achieved.
  • the embodiments of the present invention provide a method for transmitting information, performing operations, and a session, and a session management function entity, so as to solve at least the problem that the application layer cannot implement traffic guidance due to the inability to obtain the traffic-oriented manner of the network.
  • an information sending method including: after the user equipment UE selects the first UPF as the first anchor point of the PDU session, and receives the traffic steering request indication information sent by the policy and control function PCF,
  • the traffic directing request indication information is determined by the PCF according to the traffic steering request for requesting the network to perform traffic steering provided by the application that the UE is accessing, and the first of the traffic guiding manner used for indicating the traffic steering of the network is returned to the application.
  • the indication information, the traffic steering mode includes one of the following: an uplink classifier UL CL traffic steering mode, and a multi-homing traffic steering mode.
  • an operation execution method including: sending a traffic steering request for requesting a network to perform traffic steering; and receiving a traffic directed manner used by the network to indicate that the network performs traffic steering.
  • An indication information wherein the traffic steering mode comprises one of the following: an uplink classifier UL CL traffic steering mode, and a multi-homing traffic steering mode; and performing an application operation according to the traffic steering mode indicated by the first indication information.
  • an information sending apparatus including: a first receiving module, configured to: after receiving, by a user equipment UE, a first user plane function UPF as a first anchor point of a protocol data unit PDU session, receiving The traffic directing request indication information sent by the PCF is configured by the PCF according to the traffic steering request for requesting the network to perform traffic steering according to the application that the UE is accessing; the first sending module uses The first indication information of the traffic steering mode used to indicate the traffic steering of the network is returned to the application, and the traffic steering mode includes one of the following: an uplink classifier UL CL traffic steering mode, and a multi-homing traffic steering mode.
  • an operation execution apparatus including: a sending module, configured to send a traffic steering request for requesting a network to perform traffic steering; and a receiving module, configured to receive, by the network, the network to perform The first indication information of the traffic-oriented mode used in the traffic-oriented manner, where the traffic-oriented manner includes one of the following: an uplink classifier UL CL traffic steering mode, a multi-homed traffic steering mode, and an operation module, configured to perform according to the first indication The traffic directed mode indicated by the information performs an application operation.
  • a session management function entity including: a processor, the processor is configured to run a program, and the program is configured to execute the information sending method of any of the above.
  • an application layer device including: a processor, the processor is configured to execute a program, wherein the program execution method performs the operation execution method of any of the above.
  • a storage medium including a stored program, wherein the program is executed to execute the information transmitting method according to any one of the above items; or the program is executed to execute any of the above The operation execution method described in the item.
  • a processor configured to execute a program, wherein the program is executed to execute the information transmitting method according to any one of the above items, or the program is executed to execute any of the above The operation execution method described.
  • the first indication information indicating the traffic guiding manner used when the network performs traffic steering is returned to the application, so that the application can obtain the The traffic direction used by the network can be used to implement traffic steering. Therefore, it is possible to solve the problem that the application layer cannot achieve traffic steering due to the inability to obtain the traffic steering mode used by the network.
  • FIG. 1 is a schematic diagram of a 5G architecture in the related art
  • FIG. 2 is a schematic diagram of a structure of traffic steering using Multi-Homed in the related art
  • FIG. 3 is a schematic diagram of an architecture for performing traffic steering by using an Uplink Classifier (UL CL) method in the related art
  • FIG. 4 is a schematic diagram of a process of affecting user plane routing in the related art
  • FIG. 5 is a flowchart of a method for transmitting information according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of an operation performing method according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram of an information transmitting apparatus according to an embodiment of the present invention.
  • FIG. 8 is a block diagram showing the structure of an operation performing apparatus according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of an interaction process between an application layer and a network when the SMF adopts the UL CL mode for traffic steering according to an alternative embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an interaction process between an application layer and a network when the SMF adopts the Multi-homing mode for traffic steering according to an alternative embodiment of the present invention.
  • FIG. 5 is a flowchart of a method for sending information according to an embodiment of the present invention. As shown in FIG. 5, the process includes the following steps. :
  • Step S502 after the first UPF is selected as the first anchor point of the PDU session, the UE receives the traffic steering request indication information sent by the PCF, where the traffic steering request indication information is used by the PCF to request the network according to the application that the UE is accessing. Conducting traffic-oriented traffic guidance requests;
  • Step S504 returning, to the application, first indication information for indicating a traffic guidance mode used when the network performs traffic steering.
  • the traffic guidance mode includes one of the following: a UL CL traffic guidance mode and a multi-homed traffic guidance mode.
  • the foregoing first indication information may be display indication information or implicit indication information. Therefore, the first indication information may include at least information for indicating whether the traffic guidance mode is a UL CL traffic guidance mode or The explicit indication information of the multi-homing traffic-directed mode, whether to send the IPv6 prefix information of the first Internet Protocol version 6; wherein, when the first IPv6 prefix information is sent, the first indication information is used to indicate that the traffic-oriented mode used is In the case of the multi-homing traffic-directed mode, the first indication information is used to indicate that the used traffic-oriented mode is the UL CL traffic-directed mode. Whether to send the first IPv6 prefix information is actually an implicit indication information.
  • first IPv6 prefix information may be newly allocated IPv6 prefix information for the user equipment, but is not limited thereto.
  • the method further includes: receiving, by the PCF entity, the first The policy is a policy that is defined by the PCF entity according to the flow description information provided by the application after the application reselection is completed; and the path of the user equipment accessing the application is switched according to the first policy.
  • the switching of the path of the user equipment access application according to the first policy may be performed by: formulating a first rule according to the first policy; and transmitting the first rule to the UL CL; wherein the first rule is used to indicate the UL CL
  • the received uplink data of the UE accessing application is sent to the second UPF that is the second anchor point of the PDU session.
  • the second UPF of the second anchor point is a new UPF different from the first UPF selected when the flow guidance is determined by the UL CL flow guiding method.
  • the application re-selection is performed first, and after the application re-selection is completed, the re-selected flow description information is provided to the core network, and the core The network then switches the path of the application to the UE (ie, user plane optimization).
  • the method may further include: receiving, by the PCF entity,
  • the second policy is a policy formulated by the PCF entity according to the address information of the application server to which the service provided by the application to the UE is to be redirected; and the path of the user device accessing the application is switched according to the second policy.
  • the switching of the path of the user equipment access application according to the second policy may be performed by: formulating a second rule according to the second policy; and sending the second rule to a bifurcation point (BP), where the second rule is used for Instructing the BP to send the received uplink data of the UE accessing the application to the third UPF that is the third anchor point of the PDU session; sending a route advertisement message to the UE by using the third UPF, where the route advertisement message carries the first IPv6 prefix information And routing option information, the routing option information carries the address information of the application server to which the service provided by the application to the UE is to be redirected.
  • BP bifurcation point
  • the third UPF is a new UPF that is different from the first UPF selected when the traffic guidance is determined by using the multi-homing traffic guidance method.
  • the method may further include: sending the notification information to the application layer, where the notification information is used to notify the application UE that the path switching of the application is completed.
  • the application layer re-applies with the UE. The interaction completes the reselection of the application layer.
  • the execution entity of the foregoing step may be a core network device, and specifically, may be a session management function SMF entity, etc., but is not limited thereto.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • FIG. 6 is a flowchart of an operation execution method according to an embodiment of the present invention. As shown in FIG. 6, the flow includes the following steps. :
  • Step S602 sending a traffic directing request for requesting the network to perform traffic steering
  • Step S604 the first indication information that is used by the network to indicate the traffic-oriented mode used by the network to perform the traffic guidance, wherein the traffic guidance mode includes one of the following: a UL CL traffic guidance mode, and a multi-homed traffic guidance mode;
  • Step S606 performing an application operation according to the traffic guidance manner indicated by the first indication information.
  • the first indication information that is used by the network to indicate the traffic-oriented mode used by the network for traffic guidance can be received, so that the application can obtain the traffic-oriented manner used by the network, thereby implementing traffic steering, and thus, Solving the problem that the application layer cannot achieve traffic steering due to the inability to obtain the traffic-oriented way of using the network.
  • the foregoing first indication information may include at least one of the following information: an explicit indication information indicating whether the used traffic steering mode is a UL CL traffic steering mode or a multi-homing traffic steering mode, and whether the first IPv6 is received. a prefix information, where the first indication information is used to indicate that the used traffic steering mode is a multi-homed traffic-directed mode, and the first IPv6 prefix information is not received, in the case that the first IPv6 prefix information is received, An indication message is used to indicate that the traffic steering mode used is the UL CL traffic steering mode.
  • the foregoing step S606 may be performed by: performing an application reselection operation; The flow description information is sent to the PCF; wherein the flow description information is used by the network to switch the path of the UE accessing the application.
  • the stream description information after the reselection includes the address information of the application server to which the access of the UE has been redirected.
  • the foregoing step S606 may be performed by: sending the service provided by the application to the UE to the network.
  • the address information is redirected to the new application server; the notification information provided by the network is received, and the notification message may be used to notify the application UE that the path switching of the application is completed; and the service provided by the application to the UE is redirected to the new application server. address.
  • execution entity of the foregoing step may be an application layer, and specifically, may be an AF entity, but is not limited thereto.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • an information transmitting apparatus is further provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and the detailed description thereof has been omitted.
  • the term "module” may implement a combination of software and/or hardware for a predetermined function.
  • the devices described in the following embodiments are preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 7 is a structural block diagram of an information transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 7, the apparatus includes:
  • the first receiving module 72 is configured to receive, after the UE selects the first UPF as the first anchor point of the PDU session, the traffic steering request indication information sent by the PCF, where the traffic steering request indication information is provided by the PCF according to the application that the UE is accessing. Used to request the network for traffic-oriented traffic-oriented request formulation;
  • the first sending module 74 is connected to the first receiving module 72, and is configured to return, to the application, first indication information for indicating a traffic guiding manner used when the network performs traffic steering.
  • the traffic guiding manner includes one of the following: UL CL traffic. Guided approach, multi-homed traffic-oriented approach.
  • the first receiving module 72 After the first receiving module 72 receives the traffic steering request indication information sent by the PCF, the first receiving module 72 returns a first indication for indicating the traffic steering mode used by the network for traffic steering.
  • the information enables the application to obtain the traffic-oriented direction of the network, thereby enabling traffic steering. Therefore, the problem that the application layer cannot achieve traffic steering due to the inability to obtain the traffic-oriented manner of the network can be solved.
  • the foregoing first indication information may include at least one of the following information: an explicit indication information indicating whether the used traffic directing mode is a UL CL traffic steering mode or a multi-homing traffic steering mode, and whether the first IPv6 prefix is sent.
  • the first indication information is used to indicate that the used traffic-directed mode is the multi-homed traffic-directed mode. If the first IPv6 prefix information is not sent, the first indication information is sent.
  • the traffic steering mode used to indicate the usage is the UL CL traffic steering mode.
  • first IPv6 prefix information may be newly allocated IPv6 prefix information for the user equipment, but is not limited thereto.
  • the device may further include: a second receiving module, and the first sending module
  • the first connection is configured to receive the first policy sent by the PCF entity, where the first policy is a policy that is determined by the PCF entity according to the flow description information provided by the application after the application reselection is completed; the first switching module, and the second receiving module
  • the connection is configured to switch the path of the user equipment access application according to the first policy.
  • the first switching module includes: a first generating unit configured to formulate a first rule according to the first policy; the first sending unit is connected to the first generating unit, configured to send the first rule to the UL CL The first rule is used to instruct the UL CL to send the received uplink data of the UE access application to the second UPF that is the second anchor point of the PDU session.
  • the device may further include: a third receiving module, and the first sending module.
  • the connection is configured to receive the second policy sent by the PCF entity, where the second policy is a policy formulated by the PCF entity according to the address information of the application server to which the UE provided by the application is to be redirected; the second switching module, And connecting to the third receiving module, configured to switch the path of the user equipment access application according to the second policy.
  • the foregoing second switching module may include: a second generating unit configured to formulate a second rule according to the second policy; and a second sending unit configured to send the second rule to the BP, where the second rule is configured to use Instructing the BP to send the received uplink data of the UE accessing the application to the third UPF that is the third anchor point of the PDU session; the third sending unit is connected to the second generating unit, and configured to send the third UPF to the user equipment.
  • the route advertisement message carries the first IPv6 prefix information and the route option information, and the route option information carries the address information of the application server to which the access provided by the application is to be redirected.
  • the third UPF is a new UPF different from the first UPF selected when the traffic guidance is determined by the multi-homing traffic steering method.
  • the apparatus may further include: a second sending module, connected to the second switching module, configured to send notification information to the application layer, where the notification information is used to notify the application layer user equipment to access the application The path switch is completed.
  • the foregoing device may be located in a core network device, and may be located in an SMF entity or the like, but is not limited thereto.
  • the embodiment of the present invention further provides an SMF entity, including: a processor, configured to run a program, where the program is executed to execute the information sending method according to any one of the foregoing embodiments.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • an operation execution device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and the detailed description thereof has been omitted.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the devices described in the following embodiments are preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 8 is a structural block diagram of an operation performing apparatus according to an embodiment of the present invention. As shown in FIG. 8, the apparatus includes:
  • the sending module 82 is configured to send a traffic steering request for requesting the network to perform traffic steering;
  • the receiving module 84 is connected to the sending module 82, and configured to receive the first indication information returned by the network for indicating the traffic steering mode used by the network for traffic steering.
  • the traffic guiding mode includes one of the following: UL CL traffic steering Mode, multi-homing traffic-oriented mode;
  • the operation module 86 is connected to the receiving module 84, and configured to perform an application operation according to the traffic guidance manner indicated by the first indication information.
  • the above-mentioned device can receive the first indication information of the traffic guidance mode used by the network to indicate the flow direction of the network, and the application can obtain the traffic guidance mode used by the network, thereby implementing the traffic guidance. Therefore, it is possible to solve the problem that the application layer cannot achieve traffic steering due to the inability to obtain the traffic-oriented manner of network usage.
  • the foregoing first indication information may include at least one of the following information: an explicit indication information indicating whether the used traffic steering mode is a UL CL traffic steering mode or a multi-homing traffic steering mode, and whether the first IPv6 is received. a prefix information, where the first indication information is used to indicate that the used traffic steering mode is a multi-homed traffic-directed mode, and the first IPv6 prefix information is not received, in the case that the first IPv6 prefix information is received, An indication message is used to indicate that the traffic steering mode used is the UL CL traffic steering mode.
  • the operation module 86 includes: a first reselecting unit configured to perform application reselection The first sending unit is connected to the first reselecting unit, and is configured to send the reselected flow description information to the PCF.
  • the flow description information is used by the network to switch the path of the UE accessing the application.
  • the operation module includes: a first re-selection unit configured to switch the path of the user equipment accessing the application in the network When finished, perform an application reselection.
  • the stream description information after the reselection includes the address information of the application server to which the access of the UE has been redirected.
  • the operation module 86 may include: a second sending unit configured to the network Sending the service provided by the application to the UE to be redirected to the address information of the new application server; the first receiving unit is connected to the second sending unit, configured to receive the notification information provided by the network, The notification message is used to notify the application that the UE accesses the path switch of the application is completed; the redirection unit is connected to the first receiving unit, and configured to redirect the service provided by the application to the UE to the The address of the new application server.
  • the foregoing apparatus may be located in an application layer device, and specifically, may be applied to an AF application function entity, but is not limited thereto.
  • the embodiment of the present invention further provides an application layer device, including: a processor, the processor is configured to run a program, and the program execution method performs the operation execution method according to any one of the foregoing embodiments.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • An embodiment of the present invention further provides a storage medium, where the storage medium includes a stored program, wherein the program is executed to execute the information transmitting method according to any one of the above items; or An operational performer as described.
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (RAM).
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • An embodiment of the present invention further provides a processor for running a program, wherein the program is executed to execute the information transmitting method according to any one of the above items; or the program is executed to execute any of the above The operation execution method described.
  • FIG. 9 is a schematic diagram of an interaction process between an application layer and a network when the SMF adopts the UL CL mode for traffic steering according to an alternative embodiment of the present invention. As shown in Figure 9, the process includes the following steps:
  • Step 900 The service access process. Specifically, the UE accesses the application through the PDU session established by the base station and the UPF1. The UE interacts with an application server (Application Server 1) of the application. The IPv6 prefix 1 assigned by the network to the UE. A PDR rule 0 for controlling policy, charging, routing, and the like of application data that the user is accessing is installed on the UPF1.
  • Application Server 1 Application Server 1
  • IPv6 prefix 1 assigned by the network to the UE.
  • a PDR rule 0 for controlling policy, charging, routing, and the like of application data that the user is accessing is installed on the UPF1.
  • Step 901 The AF generates an AF application traffic steering request message.
  • the content of the request includes identifying traffic information that needs to be directed (including DNN and slice selection information or AF-Service-Identifier), location information (DNAI list) of the traffic-oriented application, routing document identification, information of the UE requiring traffic guidance, and the like.
  • Step 902a If the AF is untrusted or the AF request is not for an ongoing PDU session, the AF sends an application traffic steering request message to the NEF.
  • Step 902b The NEF authorizes the request and may perform some necessary mapping, such as obtaining DNN and slice selection information, DNAI list and routing document identification according to AF-Service-Identifier.
  • the NEF sends an application traffic steering request message to the PCF.
  • Step 902c When the AF request is for an ongoing PDU session, the AF directly sends an application traffic steering request message to the corresponding PCF.
  • Step 903 The PCF returns an application traffic directed response message to the AF.
  • Step 904 The PCF determines each existing PDU-CAN session affected by the application traffic steering request of the AF. For each PDU-CAN session, the PCF sends a message to the SMF, where the message carries a traffic steering request indication (equivalent to the above implementation).
  • the traffic directed request indication information in the example) and DNAI are used for PDU-CAN session modification and response.
  • Step 905 The SMF decides to use the UL CL for traffic steering according to the network policy, the capabilities of the network, and the capabilities of the UE. Select a new anchor point UPF (ie UPF2) and a UL CL according to DNAI. UL CL may be combined with UPF2.
  • UPF2 new anchor point UPF
  • UL CL may be combined with UPF2.
  • Step 906 The SMF sends a session management request message to the AMF, where the message carries the tunnel information of the uplink data received by the UL CL.
  • Step 907 The AMF sends an N2 session request message to the RAN, where the message carries the tunnel information of the UL CL receiving the uplink data.
  • the RAN updates the tunnel information of the uplink data.
  • Step 908 The RAN returns an N2 session request response message to the AMF, where the message may carry the tunnel information of the updated RAN to receive downlink data.
  • Step 909 The AMF returns a session management response message to the SMF, where the message carries the tunnel information of the received updated RAN to receive downlink data.
  • Step 910 The SMF sends an N4 session establishment request to the UL CL, and carries the tunnel information that the RAN receives the downlink data.
  • UPF1 and UPF2 receive tunnel information of uplink data.
  • the UL CL returns an N4 session setup response message.
  • Step 911 The SMF sends an N4 session establishment request to the UPF2, where the message carries the tunnel information of the UL CL receiving the downlink data. UPF2 returns an N4 session setup response message.
  • Step 912 The SMF sends an N4 session modification request message to the UPF1, where the message carries the tunnel information of the downlink data received by the UL CL. UPF1 returns a session modification response message.
  • Step 913 The SMF sends a notification message (corresponding to the first indication information) to the AF, where the message carries an indication of the UL CL.
  • the UL CL indication may not be an indication of a display. Because in the Multi-Homing scenario in Figure 2, the SMF reports a new IPv6 Prefix to the AF. If all the SMFs do not report a new IPv6 Prefix to the AF in this step, the AF can determine that the SMF uses the UL CL for traffic steering.
  • Step 914 The application layer interacts with the UE according to the indication.
  • the UE is notified to interact with another application server (Application Server 2) of the application to continue the service access.
  • Application Server 2 Application Server 2
  • Step 915a After the application layer switching or reselection is completed, the AF sends an application traffic steering request message to the NEF, where the message carries the current flow description information, where the information includes at least the address information of the Application Server 2.
  • Step 915b The NEF authorizes the application traffic steering request, and the NEF sends the application traffic steering request message to the PCF.
  • Step 915c The AF sends an application traffic directing request message to the corresponding PCF, where the message carries the current flow description information, where the information includes at least the address information of the Application Server 2.
  • Step 916 The PCF performs a new policy decision, including the PCF formulating a PCC rule according to the flow description information.
  • the PCF sends the new policy to the SMF.
  • the SMF generates PDR rule 1 and PDR rule 2 according to the newly formulated PCC rule; wherein PDR rule 1 (corresponding to the first rule in the above embodiment) is provided to the UL CL, indicating that the UL CL receives the user access from the RAN.
  • the uplink data of the application is sent to the UPF2 (corresponding to the second UPF in the foregoing embodiment); the PDR rule 2 is provided to the UPF2, including the traffic steering policy, the QoS policy, and the like according to the routing document identifier.
  • Step 917 The SMF sends an N4 session modification request message including the PDR rule 1 to the UL CL, so that the uplink data of the user access application received by the UL CL from the RAN is sent to the UPF2. Other data is still sent to UPF1.
  • the UL CL installs the PDR rule 1 and returns an N4 session modification response message to the SMF.
  • Step 918 The SMF sends an N4 session modification request message including the PDR rule 2 to the UPF2, so that the UPF2 can perform policy, charging, and routing control on the data accessed by the UE. UPF2 returns an N4 session modification response message to the SMF.
  • Step 919 The SMF sends an N4 session modification request message to the UPF1, the message is used to instruct the UPF1 to delete the previously installed PDU rule 0; the UPF1 deletes the PDU rule 0 and returns an N4 session modification response message.
  • the flow description information is re-selected to the 5G core network, and the 5G core network switches the path of the user access application (ie, user plane optimization). .
  • FIG. 10 is a schematic diagram of an interaction process between an application layer and a network when the SMF adopts the Multi-homing mode for traffic steering according to an alternative embodiment of the present invention. As shown in Figure 10, the following steps are included:
  • Step 1000 The service access process. Specifically, the UE accesses the application through the PDU session established by the base station and the UPF1. The UE interacts with an application server (Application Server 1) of the application. The network allocates IPv6 prefix 1 to the UE. A PDR rule 0 for controlling policy, charging, routing, and the like of application data that the user is accessing is installed on the UPF1.
  • Step 1001 The AF generates an AF application traffic steering request message.
  • the requested content includes identifying traffic information that needs to be directed (including DNN and slice selection information or AF-Service-Identifier), location information of the traffic-oriented application (DNAI list), routing document identification, information of the UE requiring traffic steering, and the like.
  • Step 1002a If the AF is untrustworthy or the AF request is not for an ongoing PDU session, the AF sends an application traffic steering request message to the NEF.
  • Step 1002b The NEF authorizes the request and may perform some necessary mapping, such as obtaining DNN and slice selection information, DNAI list, and routing document identification according to the AF-Service-Identifier.
  • the NEF sends an application traffic steering request message to the PCF.
  • Step 1002c When the AF request is for an ongoing PDU session, the AF directly sends an application traffic steering request message to the corresponding PCF.
  • Step 1003 The PCF returns an application traffic directed response message to the AF.
  • Step 1004 The PCF determines each existing PDU-CAN session affected by the application traffic steering request of the AF. For each PDU-CAN session, the PCF sends a message to the SMF, where the message carries a traffic steering request indication (equivalent to the above implementation).
  • the example traffic directed request indication information) and DNAI are used for PDU-CAN session modification and response.
  • Step 1005 The SMF decides to use Multi-homing for traffic steering according to the network policy, the capabilities of the network, and the capabilities of the UE. Select a new anchor point UPF (ie UPF2) and a bifurcation point BP according to DNAI. BP may be one with UPF2. In addition, the SMF allocates IPv6 Prefix 2 to the UE according to UPF2.
  • Step 1006 The SMF sends a session management request message to the AMF, where the message carries the tunnel information that the BP receives the uplink data.
  • Step 1007 The AMF sends an N2 session request message to the RAN, where the message carries the tunnel information that the BP receives the uplink data.
  • the RAN updates the tunnel information of the uplink data.
  • Step 1008 The RAN returns an N2 session request response message to the AMF, where the message may carry the tunnel information of the updated RAN to receive downlink data.
  • Step 1009 The AMF returns an N2 session request response message to the SMF, where the message carries the tunnel information of the received updated RAN to receive downlink data.
  • Step 1010 The SMF sends an N4 session establishment request to the BP, and carries the tunnel information that the RAN receives the downlink data.
  • UPF1 and UPF2 receive tunnel information of uplink data.
  • BP returns an N4 session setup response message.
  • Step 1011 The SMF sends an N4 session establishment request to the UPF2, where the message carries the tunnel information that the BP receives the downlink data. UPF2 returns an N4 session setup response message.
  • Step 1012 The SMF sends an N4 session modification request message to the UPF1, where the message carries the tunnel information that the BP receives the downlink data. UPF1 returns a session modification response message.
  • Step 1013 The SMF sends a notification message (corresponding to the first indication information of the foregoing embodiment) to the AF, where the message carries an indication of Multi-Homing and possibly IPv6 Prefix 2.
  • SMF can also be used without a separate Multi-Homing indication, because if IPv6 Prefix 2 is reported, it can indicate that SMF uses Multi-Homing for traffic steering.
  • Step 1014a The AF sends an application traffic steering request message to the NEF, where the message carries the address information of the new Application Server 2.
  • Step 1014b The NEF authorizes the application traffic steering request, and the NEF sends the application traffic steering request message to the PCF.
  • Step 1014c The AF sends an application traffic directing request message to the corresponding PCF, where the message carries the address information of the new Application Server 2.
  • Step 1015 The PCF returns an application traffic directed response message to the AF.
  • Step 1016 The PCF makes a new policy decision, including the PCF formulating a PCC rule according to the address information of the new Application Server 2.
  • the PCF sends the new policy to the SMF.
  • the SMF formulates PDR rule 1 and PDR rule 2; wherein PDR rule 1 is sent to the BP to instruct the BP to send the uplink data whose source address is IPv6 Prefix 1 to UPF1, PDR rule 2 (corresponding to the second rule of the above embodiment) It will be sent to the BP to instruct the BP to send the uplink data whose source address is IPv6 Prefix 2 to UPF2.
  • the SMF generates PDR rule 3 according to PCC rules.
  • PDR rule 3 carries a filter template containing IPv6 Prefix 2 and Application Server 2 address information, and corresponding QoS, charging, and traffic steering policies. PDR Rule 3 will be sent to UPF2.
  • Step 1017 The SMF sends the N4 session modification request message including the PDR rule 1 and the PDR rule 2 to the BP, so that the BP receives the uplink data whose source address is IPv6 Prefix 1 from the RAN and sends it to the UPF1, and the source address is the uplink data of the IPv6 Prefix 2.
  • BP After installing PDR rule 1, BP returns an N4 session modification response message to the SMF.
  • Step 1018 The SMF sends the N4 session modification request message including the PDR rule 3 to the UPF2, so that the UPF2 can perform policy, charging, and routing control on the data accessed by the UE. UPF2 returns an N4 session modification response message to the SMF.
  • Step 1019 The SMF sends a route advertisement message to the UE through the UPF2, where the message carries the IPv6 Prefix 2 and the routing option information 2, where the routing option message carries the address information of the Application Server 2.
  • Step 1020 The SMF sends a route advertisement message to the UE through the UPF1, where the message carries the IPv6 Prefix 1 and the route option information 1.
  • Step 1021 The SMF notifies the AF user that the reselection (ie, path switching) is completed.
  • Step 1022 The AF interacts with the UE to perform application layer redirection (or application layer reselection).
  • the application includes the UE to notify the Application Server 2, and the UE accesses the application by using IPv6 Prefix 2 according to the routing option information 2.
  • Step 1023a The AF sends a request message to the NEF, where the message carries the service information, including the current new flow description information.
  • Step 1023b The NEF authorizes the request message, and the NEF sends the request message to the PCF.
  • Step 1023c The AF sends a request message to the corresponding PCF, where the message carries the service information, including the current flow description information.
  • Step 1024 The PCF returns a response message to the AF.
  • Step 1025 The PCF makes a new policy decision.
  • the previously established PCC rules are updated based on the new flow description information.
  • the PCF sends the new policy to the SMF.
  • the SMF updates the PDR rule 3 according to the PCC rules.
  • PDR rule 3 carries a filter template containing new flow description information, and corresponding policies such as QoS, charging, and traffic steering. PDR rule 3 will be sent to UPF2;
  • Step 1026 The SMF sends an N4 session modification request message to the UPF1, which is used to instruct the UPF1 to delete the PDR rule 0.
  • the UPF1 deletes the PDR rule 0 and returns an N4 session modification response message.
  • Step 1027 The SMF sends an N4 session modification request message carrying the updated PDR rule 3 to the UPF2.
  • the UPF2 can perform policy, charging, and routing control on the data accessed by the UE.
  • UPF2 returns an N4 session modification response message to the SMF.
  • the 5G core network notifies the application layer after the user accesses the application path (ie, user plane optimization) is completed, and the application layer then interacts with the UE to complete the application layer reselection (or application layer switching).
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

Les modes de réalisation de l'invention concernent un procédé et un dispositif d'envoi d'informations et d'exécution d'opération, et une entité fonctionnelle de gestion de session. Le procédé d'envoi d'informations consiste : après la sélection, pour un équipement d'utilisateur (UE), d'une première fonction de plan utilisateur (UPF) en tant qu'un premier point d'ancrage d'une unité de données de protocole (PDU), recevoir des informations d'indication de demande de guidage de trafic envoyées par une fonction de politique et de commande (PCF), les informations d'indication de demande de guide de trafic étant définies par la PCF d'après une demande de guidage de trafic, fournie par une application à laquelle l'UE accède actuellement, pour demander à un réseau d'exécuter un guidage de trafic ; et retourner à l'application des premières informations d'indication pour indiquer un mode de guidage de trafic utilisé lorsque le réseau exécute un guidage de trafic, le mode de guidage de trafic comprenant un mode de guidage de trafic de classificateur de liaison montante (CL UL) ou un mode de guidage de trafic multi-domicile.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112118600A (zh) * 2020-09-18 2020-12-22 恒安嘉新（北京）科技股份公司 一种5g独立组网sa架构下的流量牵引系统
CN115529294A (zh) * 2022-04-27 2022-12-27 中国移动通信集团设计院有限公司 业务处理方法、装置、设备及存储介质

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110536282B (zh) * 2019-03-28 2023-03-21 中兴通讯股份有限公司 一种事件通知方法及装置
US11894937B2 (en) 2019-04-02 2024-02-06 Nokia Technologies Oy Local user plane function control
CN113261244B (zh) * 2019-05-27 2022-08-26 华为技术有限公司 联合mec主机和upf选择的网络节点
CN112311691B (zh) * 2019-07-26 2024-04-16 华为技术有限公司 策略控制方法、设备及系统
CN110535552B (zh) * 2019-09-27 2021-07-20 腾讯科技（深圳）有限公司 网络节点执行的方法以及相应的网络节点
CN112583713B (zh) * 2019-09-30 2023-09-29 中兴通讯股份有限公司 流量路由控制方法、网络设备、系统及存储介质
CN111093225B (zh) * 2019-12-30 2021-07-06 北京邮电大学 一种数据路径服务质量的监视及报告方法、装置及介质
CN113473569B (zh) * 2020-03-31 2023-05-12 华为技术有限公司 应用服务器的发现方法及相关装置
WO2022099453A1 (fr) * 2020-11-10 2022-05-19 Telefonaktiebolaget Lm Ericsson (Publ) Procédés, entités et support lisible par ordinateur pour l'insertion ulcl
CN114916028A (zh) * 2021-02-20 2022-08-16 腾讯科技（深圳）有限公司 业务服务器的切换控制方法及装置、电子设备、存储介质
CN115529637A (zh) * 2021-06-24 2022-12-27 华为技术有限公司 一种通信方法、通信装置及通信系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170156094A1 (en) * 2013-10-18 2017-06-01 At&T Mobility Ii Llc Cell user occupancy indicator to enhance intelligent traffic steering
CN106982124A (zh) * 2016-01-15 2017-07-25 中兴通讯股份有限公司 信息处理方法、pcrf实体及tscef实体
CN106998543A (zh) * 2016-01-25 2017-08-01 中兴通讯股份有限公司 第三方应用访问方法及装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9320050B2 (en) * 2013-06-28 2016-04-19 Apple Inc. Systems and methods to enhance radio link performance in a multi-carrier environment
CN104639451B (zh) * 2013-11-14 2019-03-22 中兴通讯股份有限公司 数据流分流方法及控制器
US10064120B2 (en) * 2015-06-16 2018-08-28 Telefonaktiebolaget Lm Ericsson (Publ) Method and nodes for handling a UE which roams into a visited network
US10334468B2 (en) * 2015-10-05 2019-06-25 Cisco Technology, Inc. Scalable control plane

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170156094A1 (en) * 2013-10-18 2017-06-01 At&T Mobility Ii Llc Cell user occupancy indicator to enhance intelligent traffic steering
CN106982124A (zh) * 2016-01-15 2017-07-25 中兴通讯股份有限公司 信息处理方法、pcrf实体及tscef实体
CN106998543A (zh) * 2016-01-25 2017-08-01 中兴通讯股份有限公司 第三方应用访问方法及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
3GPP: "3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; System Architecture for the 5G System; Stage 2 (Release 15)", 3GPP TS 23.501 V1.2.0, 26 July 2017 (2017-07-26), XP051312202 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112118600A (zh) * 2020-09-18 2020-12-22 恒安嘉新（北京）科技股份公司 一种5g独立组网sa架构下的流量牵引系统
CN112118600B (zh) * 2020-09-18 2024-05-03 恒安嘉新（北京）科技股份公司 一种5g独立组网sa架构下的流量牵引系统
CN115529294A (zh) * 2022-04-27 2022-12-27 中国移动通信集团设计院有限公司 业务处理方法、装置、设备及存储介质
CN115529294B (zh) * 2022-04-27 2024-04-09 中国移动通信集团设计院有限公司 业务处理方法、装置、设备及存储介质

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