CN114079956A - Service guarantee method, system, storage medium and service providing system - Google Patents
Service guarantee method, system, storage medium and service providing system Download PDFInfo
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Abstract
The disclosure provides a service guarantee method, a service guarantee system, a storage medium and a service providing system, and relates to the technical field of mobile networks. The service guarantee method disclosed by the invention comprises the following steps: the application function AF server receives the service data packet from the abnormal server and forwards the service data packet to a target server which replaces the abnormal server to provide service; the AF server creates and informs an address of an edge User Plane Function (UPF) abnormal server and an address of a target server by initiating a data Packet Flow Description Function (PFDF); and the edge UPF carries out address conversion on the uplink and downlink data packets of the service according to the address of the abnormal server and the address of the target server. By the method, the data packet of the abnormal server can be provided to the target server of the alternative service through the AF, and the data is ensured not to be lost; the UPF can convert the addresses of the uplink and downlink data, so that the terminal side does not need to be informed, the reliability of the service is ensured, and the server switching without perception at the terminal side is realized.
Description
Technical Field
The present disclosure relates to the field of mobile network technologies, and in particular, to a service provisioning method, system, storage medium, and service providing system.
Background
In the process of providing internet applications, applications deployed in an edge computing environment sometimes need to be replaced to continue providing services due to unavailable services (abnormal conditions such as traffic congestion and service downtime). And the replacement of the server in the service process may cause service interruption, data loss and the like, thereby bringing poor experience to the user.
Disclosure of Invention
An object of the present disclosure is to provide a switching scheme for an edge application server, which ensures reliability of a service and implements server switching without sensing on a terminal side.
According to an aspect of some embodiments of the present disclosure, there is provided a service provisioning method, including: an AF (Application Function) server receives a service data packet from an abnormal server and forwards the service data packet to a target server for replacing the abnormal server to provide service; the AF server creates an address notifying an edge UPF (User Plane Function) of an abnormal server and an address of a target server by initiating a PFDF (Packet Flow Description Function); and the edge UPF carries out address conversion on the uplink and downlink data packets of the service according to the address of the abnormal server and the address of the target server.
In some embodiments, the AF server creating an address of the notification edge UPF exception server and an address of the target server by initiating the PFDF comprises: the AF server sends a PFDF creating request to a network open function NEF, wherein the PFDF creating request comprises the address of an abnormal server, the address of a target server and a service identifier; the NEF forwards the PFDF create request to the SMF (Session Management Function); the SMF updates the N4 interface information according to the PFDF creating request, and informs the address of the abnormal server and the address of the target server of the edge UPF.
In some embodiments, the address conversion of the service uplink and downlink data packets by the edge UPF according to the address of the abnormal server and the address of the target server includes: the edge UPF modifies the target address and port of the service request into the address and port of the target server under the condition of receiving the service request of the corresponding service from the terminal; and the edge UPF modifies the source address and the port of the data packet into the address and the port of the abnormal server under the condition of receiving the data packet of the corresponding service from the target server.
In some embodiments, the service provisioning method further comprises: the method comprises the steps that an AF server determines that the server is an abnormal server under the condition that the AF server receives a service replacing request from the server, wherein the service replacing request comprises the fault condition and address information of the server; the AF server sends a forwarding instruction to the abnormal server so that the abnormal server can provide a service data packet; and the AF server determines a target server which replaces the abnormal server to provide service according to the prestored configuration information so as to forward the service data packet to the target server.
In some embodiments, the service provisioning method further comprises: the SMF subscribes PFD (Packet Flow Description Function) update to the NEF, so that the NEF forwards the PFDF creation request to the SMF after receiving the PFDF creation request.
By the method, the data packet of the abnormal server can be provided to the target server of the alternative service through the AF, and the data is ensured not to be lost; the UPF can convert the addresses of the uplink and downlink data, so that the terminal side does not need to be informed, the reliability of the service is ensured, and the server switching without perception at the terminal side is realized.
According to an aspect of some embodiments of the present disclosure, there is provided a service provisioning system, including: the AF server is configured to receive the service data packet from the abnormal server and forward the service data packet to a target server which replaces the abnormal server to provide service; creating an address of a notification edge UPF abnormal server and an address of a target server by initiating a PFDF; and the edge UPF is configured to perform address conversion on the uplink and downlink data packets of the service according to the address of the abnormal server and the address of the target server.
In some embodiments, the AF server is configured to send a PFDF creation request to the NEF, where the PFDF creation request includes an address of the exception server, an address of the target server, and a service identifier; the service guarantee system further comprises: a NEF configured to forward the PFDF create request to the SMF; and the SMF is configured to update the N4 interface information according to the PFDF creation request and inform the address of the edge UPF abnormal server and the address of the target server.
In some embodiments, the edge UPF is configured to: modifying the target address and port of the service request into the address and port of the target server under the condition of receiving the service request of the corresponding service from the terminal; and modifying the source address and the port of the data packet into the address and the port of the abnormal server under the condition of receiving the data packet of the corresponding service from the target server.
In some embodiments, the AF server is further configured to: determining that the server is an abnormal server under the condition of receiving a service replacement request from the server, wherein the service replacement request comprises the fault condition and the address information of the server; sending a forwarding instruction to the abnormal server so that the abnormal server provides a service data packet; and determining a target server for replacing the abnormal server to provide service according to the prestored configuration information so as to forward the service data packet to the target server.
In some embodiments, the SMF is further configured to subscribe the PFD update to the NEF in advance, so that the NEF forwards the PFDF create request to the SMF after receiving the PFDF create request.
According to an aspect of some embodiments of the present disclosure, there is provided a service provisioning system, including: a memory; and a processor coupled to the memory, the processor configured to perform any of the service provisioning methods mentioned above based on instructions stored in the memory.
In the service guarantee system, the data packet of the abnormal server can be provided to the target server of the alternative service through the AF, so that the data is ensured not to be lost; the UPF can convert the addresses of the uplink and downlink data, so that the terminal side does not need to be informed, the reliability of the service is ensured, and the server switching without perception at the terminal side is realized.
According to an aspect of some embodiments of the present disclosure, a computer-readable storage medium is proposed, on which computer program instructions are stored, which instructions, when executed by a processor, implement the steps of any of the service provisioning methods mentioned above.
By executing instructions on such a storage medium, data packets of the anomalous server can be provided to the target server of the alternative service via the AF, ensuring that data is not lost; the UPF can convert the addresses of the uplink and downlink data, so that the terminal side does not need to be informed, the reliability of the service is ensured, and the server switching without perception at the terminal side is realized.
According to an aspect of some embodiments of the present disclosure, there is provided a service providing system including: any of the service provisioning systems mentioned hereinabove; the service servers are configured to send service replacement requests to the service guarantee system under the condition that the abnormality of the service servers is detected; providing a service data packet according to a forwarding instruction from a service provisioning system; and receiving the service data packet from the service guarantee system and providing the service for the user.
In the service providing system, the abnormal server can find the abnormality in time, and the data packet to be sent can be provided to the target server of the alternative service through AF (auto-ranging), so that the data is ensured not to be lost; the UPF can convert the addresses of the uplink and downlink data, so that the terminal side does not need to be informed, the reliability of the service is ensured, and the server switching without perception at the terminal side is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:
FIG. 1 is a flow diagram of some embodiments of a business assurance method of the present disclosure.
FIG. 2 is a flow diagram of further embodiments of the service provisioning method of the present disclosure.
FIG. 3 is a schematic diagram of some embodiments of the service assurance system of the present disclosure.
FIG. 4 is a schematic diagram of other embodiments of the service assurance system of the present disclosure.
FIG. 5 is a schematic diagram of still other embodiments of the service assurance system of the present disclosure.
Fig. 6 is a schematic diagram of some embodiments of a service providing system of the present disclosure.
Fig. 7 is a schematic diagram of further embodiments of the service providing system of the present disclosure.
Detailed Description
The technical solution of the present disclosure is further described in detail by the accompanying drawings and examples.
The inventor finds that, in the related art, after the IP address of the Edge application service server changes, a standard scheme how to notify the 5G core network to update the network policy is not available, which results in a certain limitation when MEC (Mobile Edge Computing) is deployed on the ground.
The method and the device realize UPF configuration and the replacement of uplink and downlink data packet addresses by a center AF (Application Function)/MEAO (Mobile Edge Application organizer) by means of a PFDF Function so as to ensure the continuity of the MEC service.
A flow diagram of some embodiments of the service provisioning method of the present disclosure is shown in fig. 1.
In step 101, the AF server receives a service data packet from the abnormal server and forwards the service data packet to a target server that provides service in place of the abnormal server. In some embodiments, the server providing the service may actively discover the abnormality of itself and report the abnormality to the AF server, and the AF server determines a target server providing the service instead of the abnormal server.
In step 102, the AF server notifies the edge UPF of the address of the exception server and the address of the target server by initiating PFDF creation. In some embodiments, the operation of PFDF creation may be performed based on the PFDF creation process in the related art. In some embodiments, the AF server may initiate PFDF creation to the NEF, informing the SMF of the information, and thus bringing the information to the corresponding edge UPF through the N4 interface.
In step 103, the edge UPF performs address translation on the uplink and downlink data packets of the service according to the address of the abnormal server and the address of the target server. In some embodiments, the address translation of the uplink and downlink data packets comprises: for the uplink data packet, converting the target address from the address of the abnormal server to the address of the target server; for the downlink data packet, the source address is converted from the address of the target server to the address of the abnormal server, so that the server providing the service from the perspective of the user terminal and the related service are not changed.
By the method, the data packet of the abnormal server can be provided to the target server of the alternative service through the AF, and the data is ensured not to be lost; the UPF can convert the addresses of the uplink and downlink data, so that the terminal side does not need to be informed, the reliability of the service is ensured, and the server switching without perception at the terminal side is realized.
A flow diagram of further embodiments of the service assurance method of the present disclosure is shown in fig. 2.
In step 201, the AF server determines that the server is an abnormal server when receiving a service replacement request from the server. In some embodiments, the EAS (Edge Application Server) sends a service replacement request to the AF Server in case of detecting congestion or failure of itself.
In step 202, the AF server sends a forwarding indication to the exception server.
In step 203, a service data packet is received from an exception server. In some embodiments, the exception server, upon receiving the forwarding indication, forwards the data packet to be sent to the user to the AF.
In step 204, the AF server determines a target server to replace the abnormal server to provide service according to the pre-stored configuration information.
In some embodiments, the order of execution of steps 202, 203 is fixed. Step 204 may be performed after step 201 and before step 205, with no fixed order between step 204 and steps 202 and 203. Step 205 is performed after steps 202-204 are completed.
In some embodiments, the pre-stored configuration information may be a selection policy, order, etc. for server replacement.
In step 205, the AF server forwards the service data packet received in step 203 to the target server determined in step 204.
In step 206, the AF server sends a PFDF create request to the NEF, where the PFDF create request includes the address of the exception server, the address of the target server, and the service identifier.
In step 207, the NEF forwards the PFDF create request to the SMF.
In some embodiments, the SMF subscribes to the PFD update to the NEF in advance, so that the NEF forwards the PFDF create request to the SMF after receiving the PFDF create request.
In step 208, the SMF updates the N4 interface information according to the PFDF creation request. The N4 interface is the interface of the interaction between SMF and UPF, and the SMF informs the address of the abnormal server and the address of the target server of the edge UPF by updating the N4 interface information. In some embodiments, the SMF may also provide service identification to the UPF so that the UPF can quickly identify the uplink and downlink packets belonging to the service.
Through the steps, information transmission and configuration of the UPF are completed. The following steps are executed in the subsequent service process:
in step 209, the edge UPF determines whether a service request of a corresponding service is received from the terminal. If a service request corresponding to a service from the terminal is received, execute step 210; if the service request of the corresponding service from the terminal is not received, step 211 is executed.
In step 210, the edge UPF modifies the destination address and port of the service request into the address and port of the destination server, so that the service request sent by the terminal to the abnormal server can smoothly reach the updated destination server. Step 211 is then executed.
In step 211, the edge UPF determines whether a packet corresponding to the service is received from the target server. If the data packet of the corresponding service from the target server is received, execute step 212; if the data packet of the corresponding service is not received from the target server, step 209 is executed.
In step 212, the edge UPF modifies the source address and port of the packet to the address and port of the abnormal server, and then returns to step 209.
In some embodiments, the operations of determining the uplink and downlink data packets are not in a fixed order, such as exchanging the execution orders of steps 209 and 211, exchanging the execution order of step 210 and step 212, or performing the determining operations of the uplink and downlink data packets synchronously.
By the method, the abnormal service continuity guarantee of the service server can be realized by skillfully combining different processes on the basis of the existing standard process, the improvement on hardware is not needed, the cost is low, and the method is convenient for rapid popularization and application.
A schematic diagram of some embodiments of the service provisioning system of the present disclosure is shown in fig. 3.
The AF server 301 can receive the service data packet from the abnormal server and forward the service data packet to a target server which provides service in place of the abnormal server; the address of the notification edge UPF exception server and the address of the target server are created by initiating the PFDF.
In some embodiments, the AF server 301 can determine that the server is an abnormal server when receiving a service replacement request from the server; sending a forwarding instruction to the abnormal server so that the abnormal server provides a service data packet; and determining a target server for replacing the abnormal server to provide service according to the prestored configuration information so as to forward the service data packet to the target server.
The edge UPF302 can perform address conversion on the uplink and downlink data packets of the service according to the address of the abnormal server and the address of the target server.
In some embodiments, after completing the configuration of the edge UPF302, the edge UPF302 modifies the target address and port of the service request into the address and port of the target server when receiving the service request of the corresponding service from the terminal; and modifying the source address and the port of the data packet into the address and the port of the abnormal server under the condition of receiving the data packet of the corresponding service from the target server.
In the service guarantee system, the data packet of the abnormal server can be provided to the target server of the alternative service through the AF, so that the data is ensured not to be lost; the UPF can convert the addresses of the uplink and downlink data, so that the terminal side does not need to be informed, the reliability of the service is ensured, and the server switching without perception at the terminal side is realized.
In some embodiments, as shown in fig. 3, the service provisioning system may further include NEF 303 and SMF 304. The AF server can send a PFDF creating request to the NEF, wherein the PFDF creating request comprises the address of the abnormal server, the address of the target server and the service identification. The NEF can forward the PFDF create request to the SMF, and the SMF can update the N4 interface information according to the PFDF create request, informing the edge UPF of the address of the abnormal server and the address of the target server. In some embodiments, the SMF may subscribe the PFD update to the NEF in advance, and after completing the subscription, the NEF will forward the PFDF create request to the SMF upon receiving the PFDF create request.
The service guarantee system can guarantee abnormal service continuity of the service server by skillfully combining different processes on the basis of the existing standard process, does not improve hardware, has low cost and is convenient to popularize and apply quickly.
A schematic structural diagram of an embodiment of the service provisioning system of the present disclosure is shown in fig. 4. The service provisioning system includes a memory 401 and a processor 402. Wherein: the memory 401 may be a magnetic disk, flash memory, or any other non-volatile storage medium. The memory is used for storing the instructions in the corresponding embodiments of the service provisioning method above. The processor 402 is coupled to the memory 401 and may be implemented as one or more integrated circuits, such as a microprocessor or microcontroller. The processor 402 is configured to execute instructions stored in the memory, so as to ensure reliability of a service and implement server switching without sensing on a terminal side.
In one embodiment, as also shown in FIG. 5, the service provisioning system 500 includes a memory 501 and a processor 502. The processor 502 is coupled to the memory 501 by a BUS 503. The service provisioning system 500 may also be connected to an external storage device 505 through a storage interface 504 for invoking external data, and may also be connected to a network or another computer system (not shown) through a network interface 506. And will not be described in detail herein.
In the embodiment, the data instruction is stored in the memory, and the processor processes the instruction, so that the reliability of the service can be ensured, and the server switching without perception at the terminal side is realized.
In another embodiment, a computer readable storage medium has stored thereon computer program instructions which, when executed by a processor, implement the steps of the method in the corresponding embodiment of the service provisioning method. As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
A schematic diagram of some embodiments of the service providing system of the present disclosure is shown in fig. 6.
The service provisioning system 61 may be any of those mentioned above.
The business servers 621-62 n are integers not less than 2. The service server sends a service replacement request to the service guarantee system under the condition of detecting the self abnormality; providing a service data packet according to a forwarding instruction from a service provisioning system; and receiving the service data packet from the service guarantee system and providing the service for the user.
In the service providing system, the abnormal server can find the abnormality in time, and the data packet to be sent can be provided to the target server of the alternative service through AF (auto-ranging), so that the data is ensured not to be lost; the UPF can convert the addresses of the uplink and downlink data, so that the terminal side does not need to be informed, the reliability of the service is ensured, and the server switching without perception at the terminal side is realized.
A schematic diagram of further embodiments of the service providing system of the present disclosure is shown in fig. 7. The direction and order of data transfer is identified in fig. 7 by arrows and corresponding numbers, where the numbers are step designations.
In step 1, the EAS1 provides service to the UE and the service is in progress.
In step 2, EAS1 detects itself abnormal conditions, such as congestion or failure.
In step 3, EAS1 reports its own anomalies to the central AF/MEAO (corresponding to the AF server above) and requests replacement.
In step 4, the central AF/MEAO decides to use EAS2 instead of EAS 1.
In step 5 the central AF/MEAO instructs the EAS1 to forward the service data packet to the AF.
In step 6 the central AF/MEAO instructs the EAS2 to provide services and to receive service data packets from the AF.
In step 7, the central AF/MEAO initiates a PFDF creation request to NEF (the PFDF creation request includes the IP addresses and ports of EAS1 and EAS2, and the service identifier).
In step 8, the NEF informs the SMF about the update of the PFD (packet traffic description).
In step 9, the SMF initiates PFDs management and updates the N4 interface information, and the updated content may include the IP address and port number of the EAS 2. The edge UPF updates the configuration according to the N4 interface information.
In step 10, a service is established between the UE and the EAS 2. And the IP address and the port number are replaced by the edge UPF in the subsequent service process.
In the service providing system, on the premise of not changing network hardware, the existing standard flow is utilized, and the service continuity guarantee of the abnormal service of the service server is realized by skillfully combining different flows, so that the service providing system is convenient to rapidly popularize and apply.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. 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.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Thus far, the present disclosure has been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
The methods and apparatus of the present disclosure may be implemented in a number of ways. For example, the methods and apparatus of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above unless specifically stated otherwise. Further, in some embodiments, the present disclosure may also be embodied as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
Finally, it should be noted that: the above examples are intended only to illustrate the technical solutions of the present disclosure and not to limit them; although the present disclosure has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will understand that: modifications to the specific embodiments of the disclosure or equivalent substitutions for parts of the technical features may still be made; all such modifications are intended to be included within the scope of the claims of this disclosure without departing from the spirit thereof.
Claims (13)
1. A service provisioning method, comprising:
the application function AF server receives a service data packet from the abnormal server and forwards the service data packet to a target server which replaces the abnormal server to provide service;
the AF server creates and informs an edge User Plane Function (UPF) of the address of the abnormal server and the address of the target server by initiating a data Packet Flow Description Function (PFDF);
and the edge UPF carries out address conversion on the uplink and downlink data packets of the service according to the address of the abnormal server and the address of the target server.
2. The method of claim 1, wherein the AF server creating a notify edge UPF by initiating a PFDF that the address of the exception server and the address of the target server comprises:
the AF server sends a PFDF creating request to a network open function NEF, wherein the PFDF creating request comprises the address of the abnormal server, the address of the target server and a service identifier;
the NEF forwards the PFDF creation request to a Session Management Function (SMF);
and the SMF updates N4 interface information according to the PFDF creating request and informs the edge UPF of the address of the abnormal server and the address of the target server.
3. The method of claim 1, wherein the edge UPF performing address translation on the uplink and downlink data packets of the service according to the address of the abnormal server and the address of the target server comprises:
the edge UPF modifies the target address and the port of the service request into the address and the port of the target server under the condition of receiving the service request of the corresponding service from the terminal;
and the edge UPF modifies the source address and the port of the data packet into the address and the port of the abnormal server under the condition of receiving the data packet of the corresponding service from the target server.
4. The method of claim 1, further comprising:
the AF server determines that the server is an abnormal server under the condition that the AF server receives a service replacing request from the server, wherein the service replacing request comprises the fault condition and the address information of the server;
the AF server sends a forwarding instruction to the abnormal server so that the abnormal server can provide the service data packet;
and the AF server determines a target server which replaces the abnormal server to provide service according to prestored configuration information so as to forward the service data packet to the target server.
5. The method of claim 2, further comprising: and the SMF subscribes the PFD update to the NEF to describe the flow of the data packet, so that the NEF forwards the PFDF creating request to a Session Management Function (SMF) after receiving the PFDF creating request.
6. A service provisioning system, comprising:
the application function AF server is configured to receive the service data packet from the abnormal server and forward the service data packet to a target server which provides service to replace the abnormal server; creating and notifying an edge User Plane Function (UPF) of the address of the abnormal server and the address of the target server by initiating a data packet traffic description function (PFDF);
and the edge UPF is configured to perform address conversion on the uplink and downlink data packets of the service according to the address of the abnormal server and the address of the target server.
7. The system of claim 6, wherein,
the AF server is configured to send a PFDF creating request to a network open function (NEF), wherein the PFDF creating request comprises the address of the abnormal server, the address of the target server and a service identifier;
further comprising:
a NEF configured to forward the PFDF create request to a session management function, SMF;
and the SMF is configured to update N4 interface information according to the PFDF creation request and inform the edge UPF of the address of the abnormal server and the address of the target server.
8. The system of claim 6, wherein the edge UPF is configured to:
under the condition of receiving a service request of a corresponding service from a terminal, modifying a target address and a port of the service request into an address and a port of a target server;
and modifying the source address and the port of the data packet into the address and the port of the abnormal server under the condition of receiving the data packet of the corresponding service from the target server.
9. The system of claim 6, wherein the AF server is further configured to:
determining a server as an abnormal server under the condition of receiving a service replacement request from the server, wherein the service replacement request comprises the fault condition and the address information of the server; sending a forwarding instruction to the abnormal server so that the abnormal server can provide the service data packet; and determining a target server which replaces the abnormal server to provide service according to prestored configuration information so as to forward the service data packet to the target server.
10. The system of claim 7, wherein the SMF is further configured to subscribe to packet traffic description (PFD) updates to the NEF in advance, such that the NEF forwards the PFDF create request to a Session Management Function (SMF) upon receipt of the PFDF create request.
11. A service provisioning system, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the method of any of claims 1-5 based on instructions stored in the memory.
12. A computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the method of any one of claims 1 to 5.
13. A service providing system comprising:
the service provisioning system of any of claims 6 to 11; and
the service servers are configured to send service replacement requests to the service guarantee system under the condition that own abnormity is detected; providing a service data packet according to a forwarding instruction from the service provisioning system; and receiving the service data packet from the service guarantee system and providing the service for the user.
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