CN115134936A - User session processing method and related device - Google Patents
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Abstract
The application provides a processing method of a user session and a related device, wherein the method comprises the following steps: receiving a processing request of a user session, and determining an optimal UPF according to a user service indicated by the processing request and parameters of each UPF; determining UPFs according to the user services and target parameters of the UPFs, and taking the UPFs except the preferred UPF in the determined UPFs as the secondary UPF; the secondary selection UPF can ensure that the user normally uses the service; sending a processing request to the preferred UPF; and under the condition that the response information of the preferred UPF to the processing request is not received or the information of the failure response of the preferred UPF to the processing request is received, determining the UPF for forwarding the user message from the next selected UPF. According to the method and the device, under the condition that the preferred UPF is abnormal, the UPF used for forwarding the user message can be searched from the UPFs selected again. Therefore, the success rate of user access or switching is improved.
Description
Technical Field
The present application relates to the field of communications, and in particular, to a method and a related apparatus for processing a user session.
Background
The 5GC system is divided into a control plane and a user plane. The Control plane includes Access and Mobility Management Function (AMF), Session Management Function (SMF), Unified Data Management Function (UDM), Policy Control Function (PCF), and other network functions (hereinafter abbreviated as NF) for managing and controlling user traffic. The User Plane includes a User Plane Function (UPF) for User Plane messaging. In a 5GC system, a control plane and a user plane are separately deployed, NFs of the control plane may be centrally deployed in a central data center (hereinafter referred to as DC), and the user plane may be deployed in the central DC or an edge DC closer to a user. The SMF of the control plane manages the UPF of one or more user planes through the N4 interface.
At present, in a scenario where a user accesses or an access parameter changes (for example, a user location changes) to perform a handover, the SMF selects one or more UPFs according to a preset logic, and the one or more UPFs are used for forwarding a user packet. After the SMF selects a UPF, a message to create/update a user session is sent to the selected UPF via the N4 interface to inform the UPF of the user plane message forwarding rules. And the UPF forwards the user data message according to the rule provided by the SMF. When the UPF has no response or fails, the SMF terminates or limits the user service according to the failure flow.
However, in a specific scenario, when some abnormality occurs in a selected UPF, so that a user in the scenario accesses or switches, the SMF always selects the same UPF, so that the user always fails to access or switch, and the success rate of user access and switch is severely reduced.
Disclosure of Invention
The application provides a processing method of a user session and a related device, and aims to solve the problem of reducing the success rate of user access and switching.
In order to achieve the above object, the present application provides the following technical solutions:
the application provides a processing method of a user session, which is applied to SMF and comprises the following steps:
receiving a processing request of a user session, and determining an optimal UPF according to a user service indicated by the processing request and parameters of each UPF;
determining UPFs according to the user services and target parameters of the UPFs, and taking the UPFs except the preferred UPF in the determined UPFs as the secondary UPF; the target parameters refer to: removing the parameters left after unnecessary parameters in the user service and the parameters of each UPF; the selected UPF can ensure that the user normally uses the service;
sending the processing request to the preferred UPF;
and under the condition that the response information of the preferred UPF to the processing request is not received or the failure response information of the preferred UPF to the processing request is received, determining the UPF for forwarding the user message from the secondary selected UPF.
Optionally, the number of the next UPFs is multiple;
the determining the UPF for forwarding the user message from the UPF selected again includes:
sending the processing request to a secondary selection UPF;
circularly executing the target process until receiving the information of successful response to the processing request;
the sub-selection UPF which sends the information of successful response to the processing request is used as the UPF for forwarding the user message;
the target process comprises the following steps:
and sending the processing request to the next UPF when the response information of the selected UPF to the processing request is not received or the failure response information of the selected UPF to the processing request is received.
Optionally, the method further includes:
and under the condition that the UPF used for forwarding the user message is determined from the UPFs selected again, sending information of successful response of the processing request to an initiating terminal of the processing request.
Optionally, the unnecessary parameter is one or more of a user service and a parameter set of each UPF; the set of parameters includes: UPF location information, UE location information, UPF load, UPF capacity, network topology, UPF load analysis information, whether redundant connectivity is supported, whether high latency communication is supported, terminal location information, UPF location information, and/or UPF load.
Optionally, the processing request of the user session is a request for creating the user session or a request for updating the user session.
Optionally, each UPF is managed by the SMF through a core network control plane and a forwarding plane interface.
Optionally, the processing request of the user session is initiated by a UE, AN, AMF, PCF, or UDM.
The application also provides a processing method of the user session, which comprises the following steps:
a specific network element of the UE or the core network initiates a processing request of a user session;
the SMF receives the processing request, and determines the preferred UPF according to the user service indicated by the processing request and the parameters of each UPF; after removing unnecessary parameters in the user service and the parameters of each UPF, determining the UPF selected again; the selected UPF can ensure that the user normally uses the service;
sending the processing request to the preferred UPF;
and under the condition that the response information of the preferred UPF to the processing request is not received or the failure response information of the preferred UPF to the processing request is received, determining the UPF for forwarding the user message from the secondary UPF.
The present application further provides a storage medium, where the storage medium includes a stored program, where the program executes any one of the processing methods of the user session executed by the SMF.
The application also provides a device, which comprises at least one processor, at least one memory connected with the processor, and a bus; the processor and the memory complete mutual communication through the bus; the processor is used for calling the program instructions in the memory so as to execute any one of the processing methods of the user session executed by the SMF.
The processing method and the related device for the user session receive a processing request of the user session, and determine the preferred UPF according to the user service indicated by the processing request and the parameters of each UPF; determining UPFs according to the user services and target parameters of the UPFs, and taking the UPFs except the preferred UPF in the determined UPFs as the secondary UPF; wherein the target parameters refer to: and removing the parameters left after the user service and unnecessary parameters in the parameters of each UPF, and selecting the UPF again can ensure that the user uses the service normally. Namely, the application obtains the sub-selection UPF which can ensure the normal use of the service by the user besides the preferred UPF by removing the unnecessary parameters.
In the application, the processing request is sent to the preferred UPF; and under the condition that the response information of the preferred UPF to the processing request is not received or the failure response information of the preferred UPF to the processing request is received, determining the UPF for forwarding the user message from the next selected UPF.
In the application, the secondary selection UPF which can ensure that the user normally uses the service besides the preferred UPF is obtained, so that the UPF used for forwarding the user message can be searched from the secondary selection UPF under the condition that the preferred UPF is abnormal. Therefore, the success rate of user access or switching is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a processing method for a user session disclosed in an embodiment of the present application;
fig. 2 is a schematic view of an application scenario disclosed in an embodiment of the present application;
FIG. 3 is a schematic diagram of a process for creating a user session according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of an update process of a user session disclosed in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a processing apparatus for a user session according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an apparatus disclosed in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a processing method for a user session provided in an embodiment of the present application, where an execution subject is an SMF, and the processing method may include the following steps:
s101, receiving a processing request of a user session, and determining the preferred UPF according to the user service indicated by the processing request and the parameters of each UPF.
In this embodiment, the processing request of the user session may be: the request for creating the user session may also be an update request of the user session, and may also be a modification request of the user session, specifically which processing request needs to be determined according to the actual situation.
In this embodiment, the processing request of the user session may be initiated by the UE or a specific network element of the core network.
In this step, the user service and the parameters of each UPF may specifically include: single Network Slice Selection Assistance Information (S-NSSAI), Data Network Name (DNN), UPF location, terminal location, Protocol Data Unit (PDU) Session type, terminal Access type, UPF load, UPF capacity, UPF load analysis Information (if Network Data analysis Function (NWDAF)), Policy and Charging Control (PCC) rule provided Data Network Access Identifier (DNAI), DNAI corresponding to UPF, Session and Service Continuity Mode (SSC Mode), terminal Information, UPF subscription specific Function required by terminal, Network topology, UPF interface Information, non-rsrd 3G technical specification (3 part 3, 3GPP Access Information 3GPP Access Information), and Network Access Information, The Access Traffic control method includes connection information of AN N9 interface, Access Network (AN) service information connected to a UPF N3, whether IP address allocation is supported, whether secure encryption is supported, whether redundant connection is supported, whether high-latency communication is supported, whether Access Traffic Steering is supported, Switching, Splitting (Access Traffic Steering, Switching, Splitting, ATSSS), operator policy, and the like.
In this step, according to the user service indicated by the processing request and the parameters of each UPF, the specific implementation process of determining the UPF is as follows: and determining the UPF which is matched with the user service parameters or can optimize the user service performance from the parameters of the UPFs managed by the SMF. For convenience of description, the UPF determined in this step is referred to as a preferred UPF.
Because the user service and the parameters of each UPF are more, the preferred UPF determined in the step is the UPF with better performance, namely, the service is normally used by the user and other advantages are also provided.
S102, determining UPFs according to the user services and the target parameters of the UPFs, and taking the UPFs except the preferred UPF in the determined UPFs as the secondary UPF.
In this embodiment, the user service and the parameters of each UPF may be divided into two types, one type is a necessary parameter, and the other type is an unnecessary parameter. Wherein, optional parameters refer to: for satisfying the normal service usage of the user, the basic service of the user functions normally, but the performance may be poor, such as low speed, large delay, etc., in the parameters of the user service and each UPF, which are optional parameters, that is, these parameters are reduced or not supported. The necessary parameters refer to: and ensuring that the determined UPF meets the indispensable parameters of the normal service use of the user. For convenience of description, in this embodiment, a parameter remaining after removing one or more unnecessary parameters among the user traffic and parameters of each UPF is referred to as a target parameter.
In this step, the UPFs are determined according to the target parameters of the user traffic and the respective UPFs, and since the target parameters are used instead of the original parameters, the number of the UPFs determined in this step includes the preferred UPF determined in S101 and also includes other UPFs. Wherein, each UPF determined in the step can satisfy the normal service use of the user.
In this step, the UPFs other than the preferred UPF among the determined UPFs are referred to as next-selected UPFs. Wherein, each time of UPF selection can satisfy the normal service use of the user.
S103, caching the UPF.
In this embodiment, in order to facilitate the subsequent use of the next selection UPF, in this step, the next selection UPF is cached.
And S104, sending a processing request to the preferred UPF.
In this step, the SMF may send a processing request to the preferred UPF over the N4 interface.
In this embodiment, after receiving the processing request of the user session, if the preferred UPF is abnormal, the preferred UPF may fail to process the processing request, and send information of a failure response to the SMF. It is also possible that the preferred UPF does not respond to the processing request such that the SMF does not receive response information for the preferred UPF to the processing request.
And S105, under the condition that the response information of the preferred UPF to the processing request is not received or the information of the response of the preferred UPF to the failure of the processing request is received, determining the UPF for forwarding the user message from the secondary UPF.
In this embodiment, not only the preferred UPF is determined, but also the next-to-select UPF is determined and cached. Therefore, when the SMF does not receive the response information of the preferred UPF to the processing request, or receives the information of the response of the preferred UPF to the processing request failure, the SMF may find the UPF that can normally respond to the user service from the next preferred UPF, that is, determine the UPF for forwarding the user packet.
In this embodiment, since the number of the next UPFs may be multiple, in this case, the process of determining the UPF for forwarding the user packet from the next UPF may include: and simultaneously, respectively sending the processing request to each secondary selection UPF, and selecting one secondary selection UPF from the secondary selection UPFs which successfully respond to the processing request as the UPF for forwarding the user message. But this determination wastes significant system resources.
In order to save system resources, in this embodiment, determining the UPF for forwarding the user packet from the next selected UPFs may include the following steps a1 to a4:
a1, sending a processing request of the user session to a secondary UPF.
The one selection UPF in this step is determined according to actual conditions, and this embodiment is not limited.
A2, judging whether the response information of the UPF selected for the time to the processing request is not received or the information of the response of the UPF selected for the time to the processing request failure is received, if so, executing A3, and if not, executing A4.
In this step, if the response information of the selected UPF to the processing request is not received, or the information of the response of the selected UPF to the processing request failure is received, it indicates that the selected UPF is not the UPF for forwarding the user packet, and therefore, the UPF for forwarding the user packet needs to be continuously searched. Step a3 is performed as required.
In this step, if neither the information of the response of the selected UPF to the processing request nor the information of the response of the selected UPF to the processing request has been received, it indicates that a successful response to the processing request has been received, and therefore, step a4 is performed.
A3, sending the processing request to the next time selection UPF.
And executing the operation of the step under the condition that the response information of the selected UPF to the processing request is not received or the response information of the selected UPF to the failure of the processing request is received.
In this step, which UPF of the next UPF to select next may be determined according to actual situations, and this embodiment is not limited.
After this step is performed, step a2 is performed.
And A4, using the secondary UPF which sends the information of successful response to the processing request as the UPF for forwarding the user message.
In the case where information of a successful response to the processing request is received, the operation of this step is performed.
And S106, sending information of successful response of the processing request to an initiating terminal of the processing request.
In this step, the SMF also sends information of a successful response to the processing request to the originator of the processing request.
In the embodiment of the present application, the processing request of the user session may be a request for creating the user session, or may be an update request of the user session. To intuitively show the solution of the present embodiment, the scenario shown in fig. 2 is taken as an example to respectively describe a creation process and an update process for a user session.
In fig. 2, the SMF simultaneously manages the UPF1 of the center DC, the UPF2 of the edge DC, and the UPF3 through an N4 interface. Wherein, the UPFs 2, 3 of the edge DC can serve the partial areas, and the UPF1 of the center DC can serve the areas including: all areas including the service area of the UPF2 and the service area of the UPF 3.
In fig. 2, the UE initiates a session handling request, the message is sent to the SMF via the (R) AN and the AMF, and the SMF sends a user plane context handling request to the UPF2 via the N4 interface and provides a user packet forwarding rule. When the UPF2 has no response or fails to respond, the SMF traces back the UPF selection result and selects the UPF1 selected again for forwarding the user message. SMF sends context processing request of user plane to UPF1 through N4 interface, and provides rules for forwarding user message. The UPF1 responds that the processing of the user plane context is successful and the user access is successful. After the user access is successful, the user message is forwarded to a data network (such as the Internet) through the UPF 1.
When a user accesses from the area covered by the UPF2, the SMF determines the UPF according to the user access parameters. Since both the UPF1 and the UPF2 can serve the area where the user is located, that is, both the UPF1 and the UPF2 can satisfy the normal use of the service by the user. Wherein, because the UPF2 is closer to the user location, when the user message is forwarded by using the UPF2, the message forwarding delay is slightly lower than that when the user message is forwarded by using the UPF1, the UPF2 is the preferred UPF, and the UPF1 is the next-to-select UPF.
Fig. 3 is an example of a process for creating a user session according to an embodiment of the present application, and the process may include the following steps:
s301, the terminal initiates a request for establishing the user session to the AN.
S302, the AN sends a creation request of the user session to the AMF.
S303, the AMF sends a creation request of the user session to the SMF.
S304, the SMF determines that the UPF2 is the preferred UPF according to the user service and the parameters of each UPF.
S305, the SMF determines the UPF according to the parameters of the user service and each UPF except unnecessary parameters, and takes the UPF1 except the preferred UPF2 in the determined UPF as the UPF selected again.
S306, caching the UPF by the SMF.
S307, the SMF sends a request for creating a user session to the UPF 2.
S308, the SMF acquires the information of the UPF1 when the response information of the UPF2 to the creation request is not received or the information of the UPF2 to the user session creation failure is received.
S309, SMF sends a request for creating a user session to UPF 1.
S310, UPF1 sends information to the SMF that the creation of the user session was successful.
S311, the SMF sends the information that the user session is successfully created to the AMF.
S312, the AMF sends the information that the user session creation is successful to the AN.
S313, the AN sends the information that the user session creation is successful to the terminal.
In this embodiment, the terminal's messages are interworked with the DN (data network) through the (R) AN, UPF 1.
Fig. 4 is an example of an update process of a user session according to an embodiment of the present application, which may include the following steps:
s401, the SMF receives an updating request of a user session, and determines that the UPF2 is the preferred UPF according to the user service and the parameters of each UPF.
The update request for the user session may be UE initiated, (R) AN initiated, AMF initiated, PCF initiated or UDM initiated.
S402, the SMF determines the UPF according to the parameters of the user service and each UPF except unnecessary parameters, and takes the UPF1 except the preferred UPF in the determined UPF as the UPF selected again.
And S403, caching the UPF for the second time by the SMF.
S404, the SMF sends an update request for the user session to the UPF 2.
S405, when the SMF does not receive the response information of the UPF2 to the updating request or receives the information of the response to the user session updating failure, the SMF acquires the cached UPF 1.
S406, the SMF sends an update request for the user session to the UPF 1.
And S407, the UPF1 sends the information that the user session update is successful to the SMF.
S408, the SMF sends the information of successful user session updating to the updating initiating terminal.
The terminal message is intercommunicated with DN through (R) AN and UPF 1.
Fig. 5 is a processing apparatus for a user session according to an embodiment of the present application, and is applied to an SMF, where the processing apparatus may include: a first determining module 501, a second determining module 502, a first sending module 503, and a third determining module 504, wherein,
a first determining module 501, configured to receive a processing request of a user session, and determine a preferred UPF according to a user service indicated by the processing request and parameters of each UPF;
a second determining module 502, configured to determine UPFs according to the user services and target parameters of the UPFs, and use a UPF other than the preferred UPF in the determined UPFs as a next-selected UPF; the target parameters refer to: removing the parameters left after unnecessary parameters in the user service and the parameters of each UPF; the selected UPF can ensure that the user normally uses the service;
a first sending module 503, configured to send the processing request to the preferred UPF;
a third determining module 504, configured to determine, when response information of the preferred UPF to the processing request is not received, or failure response information of the preferred UPF to the processing request is received, a UPF used for forwarding the user packet from the next preferred UPF.
Optionally, the number of the next UPFs is multiple;
the third determining module 504 is configured to determine, from the next-selected UPFs, a UPF for forwarding a user packet, and includes:
the third determining module 504 is specifically configured to send the processing request to one next-selected UPF; circularly executing the target process until receiving the information of successful response to the processing request; the sub-selection UPF which sends the information of successful response to the processing request is used as the UPF for forwarding the user message;
the target process comprises the following steps: and sending the processing request to the next UPF when the response information of the selected UPF to the processing request is not received or the failure response information of the selected UPF to the processing request is received.
Optionally, the apparatus may further include:
and the second sending module is used for sending the information of the successful response of the processing request to the initiating terminal of the processing request under the condition that the UPF used for forwarding the user message is determined from the secondary selected UPFs.
Optionally, the unnecessary parameters are one or more of a user service and a parameter set of each UPF; the set of parameters includes: UPF location information, UE location information, UPF load, UPF capacity, network topology, UPF load analysis information, whether redundant connectivity is supported, whether high latency communication is supported, terminal location information, UPF location information, and/or UPF load.
Optionally, the processing request of the user session is a request for creating the user session or a request for updating the user session.
Optionally, each UPF is managed by the SMF through a core network control plane and a forwarding plane interface.
Optionally, the processing request of the user session is initiated by a UE, AN, AMF, PCF, or UDM.
The processing device of the user session comprises a processor and a memory, the first determining module 501, the second determining module 502, the first sending module 503, the third determining module 504, and the like are all stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. One or more than one kernel can be set, and the problem of reducing the success rate of user access and switching is solved by adjusting kernel parameters.
An embodiment of the present invention provides a storage medium, on which a program is stored, and the program implements the processing method of the user session when executed by a processor.
The embodiment of the invention provides a processor, which is used for running a program, wherein the program executes a processing method of a user session during running.
An embodiment of the present invention provides an apparatus, as shown in fig. 6, the apparatus includes at least one processor, and at least one memory and a bus connected to the processor; the processor and the memory complete mutual communication through a bus; the processor is used for calling the program instructions in the memory to execute the processing method of the user session. The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device:
receiving a processing request of a user session, and determining an optimal UPF according to a user service indicated by the processing request and parameters of each UPF;
determining UPFs according to the user services and target parameters of the UPFs, and taking the UPFs except the preferred UPF in the determined UPFs as the secondary UPF; the target parameters refer to: removing the parameters left after unnecessary parameters in the user service and the parameters of each UPF; the secondary selection UPF can ensure that the user normally uses the service;
sending the processing request to the preferred UPF;
and under the condition that the response information of the preferred UPF to the processing request is not received or the failure response information of the preferred UPF to the processing request is received, determining the UPF for forwarding the user message from the secondary selected UPF.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a device includes one or more processors (CPUs), memory, and a bus. The device may also include input/output interfaces, network interfaces, and the like.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip. The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
The functions described in the method of the embodiment of the present application, if implemented in the form of software functional units and sold or used as independent products, may be stored in a storage medium readable by a computing device. Based on such understanding, part of the contribution to the prior art of the embodiments of the present application or part of the technical solution may be embodied in the form of a software product stored in a storage medium and including several instructions for causing a computing device (which may be a personal computer, a server, a mobile computing device or a network device) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Features described in the embodiments of the present specification may be replaced with or combined with each other, each embodiment is described with a focus on differences from other embodiments, and the same or similar portions among the embodiments may be referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A processing method of a user session is applied to SMF, and comprises the following steps:
receiving a processing request of a user session, and determining an optimal UPF according to a user service indicated by the processing request and parameters of each UPF;
determining UPFs according to the user services and target parameters of the UPFs, and taking the UPFs except the preferred UPF in the determined UPFs as the secondary UPF; the target parameters refer to: removing the parameters left after unnecessary parameters in the user service and the parameters of each UPF; the selected UPF can ensure that the user normally uses the service;
sending the processing request to the preferred UPF;
and under the condition that the response information of the preferred UPF to the processing request is not received or the failure response information of the preferred UPF to the processing request is received, determining the UPF for forwarding the user message from the secondary selected UPF.
2. The method according to claim 1, wherein the number of the sub-selection UPFs is plural;
the determining the UPF for forwarding the user message from the UPF selected again includes:
sending the processing request to a secondary selection UPF;
circularly executing the target process until receiving the information of successful response to the processing request;
the sub-selection UPF which sends the information of successful response to the processing request is used as the UPF for forwarding the user message;
the target process comprises the following steps:
and sending the processing request to the next UPF when the response information of the selected UPF to the processing request is not received or the failure response information of the selected UPF to the processing request is received.
3. The method of claim 1, further comprising:
and under the condition that the UPF used for forwarding the user message is determined from the UPFs selected again, sending information of successful response of the processing request to an initiating terminal of the processing request.
4. The method of claim 1, wherein the non-essential parameters are one or more of user traffic and parameter sets of respective UPFs; the set of parameters includes: UPF location information, UE location information, UPF load, UPF capacity, network topology, UPF load analysis information, whether redundant connectivity is supported, whether high latency communication is supported, terminal location information, UPF location information, and/or UPF load.
5. The method of claim 1, wherein the processing request of the user session is a creation request of the user session or an update request of the user session.
6. The method of claim 1, wherein each UPF is managed by the SMF via a core network control plane and a forwarding plane interface.
7. The method of claim 1, wherein the request for processing the user session is initiated by a UE, AN, AMF, PCF, or UDM.
8. A method for processing a user session is characterized by comprising the following steps:
a specific network element of the UE or the core network initiates a processing request of a user session;
the SMF receives the processing request, and determines the preferred UPF according to the user service indicated by the processing request and the parameters of each UPF; after removing unnecessary parameters in the user service and the parameters of each UPF, determining the UPF selected again; the selected UPF can ensure that the user normally uses the service;
sending the processing request to the preferred UPF;
and under the condition that the response information of the preferred UPF to the processing request is not received or the failure response information of the preferred UPF to the processing request is received, determining the UPF for forwarding the user message from the secondary selected UPF.
9. A storage medium comprising a stored program, wherein the program performs the method of processing a user session according to any one of claims 1 to 7.
10. An apparatus comprising at least one processor, and at least one memory, bus connected to the processor; the processor and the memory complete mutual communication through the bus; the processor is used for calling the program instructions in the memory to execute the processing method of the user session according to any one of claims 1-7.
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| CN116193477A (en) * | 2023-02-28 | 2023-05-30 | 广州爱浦路网络技术有限公司 | Method and device for SMF to select UPF |
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