CN112737808A - Network slice instance configuration method and device - Google Patents

Network slice instance configuration method and device Download PDF

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Publication number
CN112737808A
CN112737808A CN201911033723.0A CN201911033723A CN112737808A CN 112737808 A CN112737808 A CN 112737808A CN 201911033723 A CN201911033723 A CN 201911033723A CN 112737808 A CN112737808 A CN 112737808A
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network
network slice
module
configuration
information
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CN201911033723.0A
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刘合伦
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ZTE Corp
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ZTE Corp
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Priority to CN201911033723.0A priority Critical patent/CN112737808A/en
Priority to PCT/CN2020/124555 priority patent/WO2021083243A1/en
Publication of CN112737808A publication Critical patent/CN112737808A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0893—Assignment of logical groups to network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Abstract

The embodiment of the invention provides a network slice example configuration method and a device, comprising the following steps: sending network configuration request information to a network data analysis module; receiving network configuration information sent by a network data analysis module; and determining the load condition of the network slice example according to the network configuration information, and determining the target network slice example accessed by the access terminal according to the load condition. The network slice instance configuration side actively acquires the network configuration information from the network data analysis module, and configures the network slice instance accessed by the access terminal according to the load condition of the network slice instance in the network configuration information, so that the load of the network slice instance is more uniform in the network slice instance with larger access load of the access terminal is avoided; meanwhile, because the load conditions of a plurality of network slice instances can be acquired, the configuration is directly carried out by the network slice instance configuration side when the configuration of the network slice instances is carried out, and the load of a network slice instance configuration system is reduced.

Description

Network slice instance configuration method and device
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method and a device for configuring network slice instances.
Background
In the fifth generation mobile communication system, the concept of network slice is introduced, and when a user accesses the network and establishes a PDU (protocol data unit), a suitable network slice instance is selected to establish the PDU (protocol data unit) and perform subsequent data services. On the network side, the same type of network slice may have multiple slice instances, and the selection of the slice instance may refer to media plane message traffic and load of the slice instance, in addition to the current DNN, S-NSSAI (single network slice selection assistance information), location, and other factors.
The current standard introduces a network functional entity of NWDAF (network data analysis module) in 5GC, which can analyze and determine the load of network slice according to the analysis. The NSSF (network slice selection module) acquires the slice example load condition through the NWDAF (network data analysis module), and selects a proper slice example according to the slice load condition when the user selects the slice.
However, the solution provided by the current standard level has the following two problems:
when NSSF (network slice selection module) is not deployed in the network, slice selection cannot be performed according to the real-time load condition of NSI (network slice instance). When the NSSF (network slice selection module) is not deployed in the network, when an NSI (network slice instance) is selected only by an AMF (access and mobility management module) local policy, the process and load of the NSI (network slice instance) cannot be referred to, which may cause uneven load of the slice instance, even overload of the NSI (network slice instance) of an individual slice instance, and may not ensure the experience of the user data service.
When the NSSF (network slice selection module) deployed in the network is enabled, since the slice load is currently only issued to the NSSF (network slice selection module), the AMF (access and mobility management module) needs to perform slice selection with the NSSF (network slice selection module) once every time a PDU (protocol data unit) is established, which increases the system load.
Disclosure of Invention
The embodiment of the invention provides a method and a device for configuring a network slice instance, and mainly solves the technical problems that the network slice instance is easy to load unevenly in the configuration of the network slice instance and the system load is high in the configuration process at present.
In order to solve the above technical problem, an embodiment of the present invention provides a network slice instance configuration method, where the network slice instance configuration method includes: sending network configuration request information to a network data analysis module;
receiving network configuration information sent by the network data analysis module;
and determining the load condition of the network slice example according to the network configuration information, and determining the target network slice example accessed by the access terminal according to the load condition.
The embodiment of the invention also provides a method for sending the load condition of the network slice instance, which comprises the following steps:
monitoring and analyzing the load states of all network slice instances in the network;
when network configuration request information sent by a network slice instance configuration module is received, returning network configuration information to the network slice instance configuration module according to the network configuration request information, wherein the network configuration information at least comprises the load state of a corresponding network slice instance.
An embodiment of the present invention further provides a device for configuring a network slice instance, including: the device comprises a sending module, a receiving module and a configuration module;
the sending module is used for sending network configuration request information to the network data analysis module;
the receiving module is used for receiving the network configuration information sent by the network data analysis module, wherein the network configuration information at least comprises the load condition of the network slice instance;
the configuration module is used for configuring a target network slice instance to the access terminal according to the load condition.
An embodiment of the present invention further provides a device for monitoring a network slice instance, including: the system comprises a sending module, a receiving module and a load monitoring module;
the load monitoring module is used for monitoring and analyzing the load states of all network slice instances in the network;
the receiving module is used for receiving network configuration request information sent by the network slice instance configuration module;
the sending module is configured to send network configuration information to the network slice instance configuration module, where the network configuration information at least includes a load state of a corresponding network slice instance in the network configuration request information.
An embodiment of the present invention further provides an apparatus, including: a processor, a memory, a communication unit, and a communication bus;
the communication bus is used for realizing wireless communication connection among the processor, the communication unit and the memory;
the processor is configured to execute one or more programs stored in the memory to implement the steps of the network slice instance configuration method proposed by the embodiment of the present invention.
Embodiments of the present invention further provide a computer storage medium, where the computer storage medium stores one or more programs, and the one or more programs are executable by one or more processors to implement the steps of the network slice instance configuration method provided in the embodiments of the present invention.
The method and the device for configuring the network slice example provided by the embodiment of the invention comprise the following steps: sending network configuration request information to a network data analysis module; receiving network configuration information sent by a network data analysis module; and determining the load condition of the network slice example according to the network configuration information, and determining the target network slice example accessed by the access terminal according to the load condition. The network slice instance configuration side actively acquires the network configuration information from the network data analysis module, and configures the network slice instance accessed by the access terminal according to the load condition of the network slice instance in the network configuration information, so that the load of the network slice instance is more uniform in the network slice instance with larger access load of the access terminal is avoided; meanwhile, because the load conditions of a plurality of network slice instances can be acquired, the configuration is directly carried out by the network slice instance configuration side when the configuration of the network slice instances is carried out, and the load of a network slice instance configuration system is reduced.
Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a complete flowchart of a network slice example configuration method according to an embodiment of the present invention;
fig. 2 is a flowchart of an AMF actively acquiring and subscribing slice load data from an NWDAF according to a third embodiment of the present invention;
fig. 3 is a flowchart of reference slice example load conditions when no NSSF is deployed in the network and the AMF determines a slice result in the Registration process according to the fourth embodiment of the present invention;
fig. 4 is a flowchart of a loading condition of a reference slice instance when the network is not deployed with NSSF and the AMF determines a slice result in the PDU process according to a fifth embodiment of the present invention;
fig. 5 is a flowchart illustrating an AMF according to a sixth embodiment of the present invention releasing a PDU on a slice instance when receiving a notification that a slice load of an NWDAF exceeds a threshold;
fig. 6 is a flowchart of notifying the terminal when the load change of the slice example causes the change of the Allowed nsai and the Reject nsai of the user according to the seventh embodiment of the present invention;
fig. 7 is a flowchart of NRF actively acquiring and subscribing slice load data from NWDAF according to an eighth embodiment of the present invention;
fig. 8 is a flowchart of reference slice example load data when an NRF selects an SMF in a PDU establishing process according to the ninth embodiment of the present invention;
fig. 9 is a schematic structural diagram of an example configuration apparatus for network slices according to a tenth embodiment of the present invention;
fig. 10 is a schematic structural diagram of a network slice example monitoring apparatus according to a tenth embodiment of the present invention;
fig. 11 is a schematic structural diagram of an apparatus according to an eleventh embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
in order to avoid the problems of uneven load of network slice instances during the configuration of the network slice instances and larger load of a network slice instance configuration system, the embodiment provides a network slice instance configuration method, which includes: sending network configuration request information to a network data analysis module; receiving network configuration information sent by a network data analysis module; and determining the load condition of the network slice example according to the network configuration information, and determining the target network slice example accessed by the access terminal according to the load condition.
Referring to fig. 1, fig. 1 is a complete flowchart of a network slice example configuration method provided in this embodiment. When the access terminal needs to access the network, it sends a network access request to the network configuration end, in fig. 1, for the access and Mobility Management module AMF (access and Mobility Management function), or the network Repository module NRF (network redundancy function), it needs to be noted that, in actual application, two interconnected modules are used for the access and Mobility Management module AMF and the network Repository module NRF, and the access terminal usually only communicates with the access and Mobility Management module AMF, so when the network configuration end is the network Repository module NRF, it needs to forward through the access and Mobility Management module AMF; when the network configuration end receives an access request of an access terminal, the network configuration end sends network configuration information request information to a network information analysis processing end, in fig. 1, a network Data analysis module NWDAF (network Data analysis function) is used for sending network configuration information request information, in the implementation, the network Data analysis module NWDAF mainly serves as a whole network monitoring and analysis function, and meanwhile, when a load exceeds a threshold in a network, the network configuration end immediately informs a corresponding module to process, so that a network fault is avoided; when the network information analysis processing end receives the network configuration information request information, the network configuration information of the requested situation is returned to the network configuration end; the network configuration end performs necessary processing on the network configuration information, extracts a load state of the network slice instance, determines a configuration condition of the network slice instance according to the extracted load state, and sends the configuration condition to the access terminal to access the corresponding target network slice instance.
In this embodiment, the network configuration information includes: and feedback network configuration information returned according to the network configuration request information, and/or active network configuration information actively sent by the network data analysis module. In practical applications, the NWDAF does not issue the network configuration information when receiving the request, and in some cases, for example, when the network is in an abnormal condition, the NWDAF also issues the active network configuration information actively, so as to better control and adjust the network state. Therefore, the received network configuration information may have three situations, one is feedback network configuration information returned according to the network configuration request information, the other is active network configuration information actively sent by the network data analysis module, and the feedback network configuration information and the active network configuration information may both exist.
In this embodiment, determining the load condition of the network slice instance according to the network configuration information includes: directly acquiring the load condition of the network slice example from the network configuration information, and/or acquiring the load data of the network slice example from the network configuration information, and analyzing the load data to determine the load condition of the network slice example; the network slice instance includes all network slice instances, or a portion of the network slice instances. Considering that the load size that the network slice example can bear may be different in some places, the step of determining the load state may be performed at the network configuration end, the received network configuration information only includes corresponding load data, the network configuration end determines the specific load state according to its own condition after taking the load data, and of course, the load state of the network slice example may also be directly output in the network data analysis module NWDAF.
In this embodiment, when the network configuration end receives the network configuration information sent by the network data analysis module by the access and mobility management module AMF; the access and mobile management module AMF determines the load condition of the network slice instance from the network configuration information; and when a network access request of the access terminal is received, sending the load condition to the access terminal for sending, wherein the load condition is used for determining a target network slice example accessed by the access terminal.
In this embodiment, the example of accessing the target network slice by the access terminal includes: the access is performed by a network Registration process, or by a Protocol Data Unit (PDU) (protocol Data Unit) establishment process.
In this embodiment, when a network Slice Selection module nssf (network Slice Selection function) is not deployed in a network and an access terminal accesses a target network Slice instance in a network Registration process; the access and mobile management module AMF receives a network Registration request of the access terminal and sends a network slice selection auxiliary information request to a unified Data management module UDM (unified Data management) signed by the access terminal;
receiving Network Slice Selection auxiliary information NSSAI (Network Slice Selection Assistance information) returned by a unified data management module UDM, and judging the load state of a Network Slice instance NSI (Network Slice indication) corresponding to single Network Slice Selection auxiliary information S-NSSAI (single Network Slice Selection Assistance information);
when the load state of the single network slice selection auxiliary information S-NSSAI exceeds a threshold value, placing the corresponding single network slice selection auxiliary information S-NSSAI in Rejected network slice selection auxiliary information Rejected NSSAI; when the load state of the single-network slice selection auxiliary information S-NSSAI does not exceed the threshold value, placing the corresponding single-network slice selection auxiliary information S-NSSAI in Allowed network slice selection auxiliary information Allowed;
adding Rejected network slice selection auxiliary information Rejected NSSAI and Allowed network slice selection auxiliary information Allowed NSSAI in Registration acceptance Accept, and sending the Rejected NSSAI and Allowed network slice selection auxiliary information Allowed NSSAI to the access terminal for determining a target network slice example accessed by the access terminal.
In this embodiment, when the load condition of the target network slice instance changes, it is determined whether the changed load condition exceeds a threshold value; if the threshold value is exceeded, configuration updating information is sent to the access terminal; and receiving configuration updating response information returned by the access terminal, and determining whether the access terminal needs to register the network again according to the configuration updating response information. It should be noted that, in this embodiment, the threshold includes a lowest threshold and a highest threshold, and the network slice instance whose load exceeds the threshold may be switched to a suitable network slice instance in time by increasing and determining whether the load condition exceeds the threshold, so that a failure of the network slice instance due to overload of the network slice instance is avoided, and the utilization efficiency of the network slice instance is improved.
In this embodiment, when the network slice selection module NSSF is not deployed in the network and the access terminal accesses the target network slice instance in the protocol data unit PDU establishing process;
the access and mobile management module AMF receives a protocol data unit PDU establishment request of an access terminal, wherein the protocol data unit PDU establishment request comprises corresponding single network slice selection auxiliary information S-NSSAI;
determining a target network slice example corresponding to the access terminal according to at least one of network configuration information, local configuration information and single network slice selection auxiliary information S-NSSAI;
adding at least one of network configuration information, local configuration information and single network slice selection auxiliary information S-NSSAI and a target network slice instance into a discovery session management module request, and sending the discovery session management module request to a network Repository module NRF (network replication function);
receiving the corresponding session Management module SMF (Session Management function) returned by the network storage library module NRF, and establishing a protocol data unit PDU flow.
In this embodiment, when the load condition of the target network slice instance changes, it is determined whether the changed load condition exceeds a threshold value;
if the threshold value is exceeded, detecting a protocol data unit PDU corresponding to the network slice example exceeding the threshold value, and sending a detection result to a session management module SMF;
and receiving response information returned by the session management module SMF, and determining the number of the Protocol Data Units (PDU) which need to be released according to the response information.
In this embodiment, when the network configuration end receives the network configuration information sent by the network data analysis module by the network repository module NRF;
the network repository module NRF determines the load condition of the network slice instance from the network configuration information;
receiving a discovery session management module request of an access and mobile management module AMF, and returning optional session management module information to the access and mobile management module AMF; the optional session management module information is used for the access and mobility management module AMF to determine the session management module SMF to determine the target network slice instance accessed by the access terminal.
In this embodiment, when the network slice selection module NSSF is not deployed in the network and the access terminal accesses the target network slice instance in the protocol data unit PDU establishing process;
the network repository module NRF receives a discovery session management module request of the access and mobility management module AMF, the discovery session management module request comprising: at least one of local configuration information and single network slice selection assistance information S-NSSAI;
determining an optional session management module (SMF) according to the load condition of the network slice example, and returning the optional session management module information to an access and mobile management module (AMF); the optional session management module information is used for the access and mobility management module AMF and the access terminal to establish a protocol data unit PDU.
The embodiment of the invention provides a network slice example configuration method, which comprises the following steps: sending network configuration request information to a network data analysis module; receiving network configuration information sent by a network data analysis module; and determining the load condition of the network slice example according to the network configuration information, and determining the target network slice example accessed by the access terminal according to the load condition. The network slice instance configuration side actively acquires the network configuration information from the network data analysis module, and configures the network slice instance accessed by the access terminal according to the load condition of the network slice instance in the network configuration information, so that the load of the network slice instance is more uniform in the network slice instance with larger access load of the access terminal is avoided; meanwhile, because the load conditions of a plurality of network slice instances can be acquired, the configuration is directly carried out by the network slice instance configuration side when the configuration of the network slice instances is carried out, and the load of a network slice instance configuration system is reduced.
Example two:
the embodiment provides a method for sending a network slice instance load condition, which comprises the following steps: monitoring and analyzing the load states of all network slice instances in the network; and when network configuration request information sent by the network slice instance configuration module is received, returning the network configuration information to the network slice instance configuration module according to the network configuration request information, wherein the network configuration information at least comprises the load state of the corresponding network slice instance.
Referring to fig. 1, a method for sending a network slice example load condition according to this embodiment corresponds to an operation at one end of the network data analysis module NWDAF in fig. 1.
In this embodiment, the network slice instance configuration module includes: the access and mobility management module AMF and the network repository module NRF.
In this embodiment, the network configuration request information includes: real-time status request information and subscription status request information; when receiving the real-time status request information, immediately returning network configuration information to the network slice instance configuration module;
and when the subscription status request information is received, returning network configuration information to the network slice instance configuration module according to the built-in time period or the trigger condition of the subscription status request information.
In this embodiment, the method for sending the load status of the network slice instance further includes: and when the load state of the network slice example is detected to exceed the threshold value, sending active network configuration information to a network slice example configuration module corresponding to the network slice example exceeding the threshold value.
The embodiment provides a method for sending a load condition of a network slice instance, which includes: monitoring and analyzing the load states of all network slice instances in the network; and when network configuration request information sent by the network slice instance configuration module is received, returning the network configuration information to the network slice instance configuration module according to the network configuration request information, wherein the network configuration information at least comprises the load state of the corresponding network slice instance. By monitoring and analyzing the load state of the network slice instances in the network, when the network slice instance configuration module receives the network configuration request information sent by the network slice instance configuration module, the network configuration information containing the load state of the network slice instances is sent to the network slice instance configuration module, so that the network slice instance configuration module reasonably configures the network slice instances according to the load state of the network slice instances in the acquired network configuration information, the configured load state of the network slice instances is more uniform, and meanwhile, the load states of a plurality of network slice instances can be acquired at one time, and the network slice instances can be directly configured when the network slice instances are configured, thereby reducing the load of the whole system.
Example three:
the network slice example configuration method provided in this embodiment is a specific embodiment in a case where an AMF (access and mobility management module) actively acquires and subscribes slice load data from an NWDAF (network data analysis module).
Referring to fig. 2, fig. 2 is a flow chart of the AMF (access and mobility management module) actively obtaining and subscribing slice load data to the NWDAF (network data analysis module).
Fig. 2 includes: and S01, the AMF (access and mobility management module) sends a data analysis request to the NWDAF (network data analysis module) to request the load data of the slice example. The AMF (access and mobility management module) may request load data of all slice instances in the current network from the NWDAF (network data analysis module), or may consider requesting load data of only part of the slice instances.
And S02, receiving a data analysis result returned by the NWDAF (network data analysis module) by the AMF (access and mobility management module), wherein the data analysis result comprises a slice example and a corresponding load condition.
And S03, the AMF (access and mobility management module) stores the slice instance returned by the NWDAF (network data analysis module) and the load condition of the slice instance. These slice payload data can be consulted when subsequent users select slices during Registration or PDU (protocol data unit) setup process select slice instances.
And S04, actively subscribing slice load data to the NWDAF (network data analysis module) by the AMF (access and mobility management module) in addition to actively requesting data analysis results from the NWDAF (network data analysis module), wherein the slice load data can be all slice instances or part of request instances.
And S05, receiving a subscription response returned by the NWDAF (network data analysis module) by the AMF (access and mobility management module). The subscription response may protect the load data of each slice at the current time.
And S06, the AMF (access and mobility management module) can receive a subscription notification message sent by the NWDAF (network data analysis module) at any time, wherein the subscription notification message contains slice load data. The NWDAF (network data analysis module) may periodically notify the AMF (access and mobility management module) or may notify the AMF (access and mobility management module) when the slice instance load exceeds a certain threshold. Furthermore, if the slice load exceeds or falls below the set value, some subsequent actions may be triggered, affecting the user's actions. See example seven and example eight.
Example four:
the network slice instance configuration method provided in this embodiment is a specific embodiment in the case where reference slice instance load data is selected for a user slice in a Registration flow by an AMF (access and mobility management module) when an NSSF (network slice selection module) is not deployed.
Referring to fig. 3, fig. 3 is a flowchart of reference to slice instance load conditions when no NSSF (network slice selection module) is deployed in the network and an AMF (access and mobility management module) decides a slice result in the Registration process.
And S01, the UE initiates a registration request to an AMF (access and mobility management module).
And S02, performing authentication and security mode procedures between the network and the UE in the registration process, which is shown in TS235024.2.2.2.2 section Step 9.
And S03, the AMF (access and mobile management module) acquires NSSAI (network slice selection auxiliary information) information signed by a user from the UDM (unified data management module).
And S04, receiving the signing NSSAI (network slice selection auxiliary information) information returned by the UDM (unified data management module) by the AMF (access and mobile management module).
And S05, for the condition that NSSF (network slice selection module) is not deployed or when AMF (access and mobile management module) depends on self configuration according to the slice selection result of the side user, referring to the slice instance load condition. If the load of the slice instance NSI (network slice instance) corresponding to the S-NSSAI (single network slice selection assistance information) is too high, and exceeds a certain threshold, no NSI (network slice instance) instance can serve the S-NSSAI (single network slice selection assistance information), the AMF (access and mobility management module) puts the S-NSSAI (single network slice selection assistance information) into the Rejected NSSAI (network slice selection rejection assistance information) and cannot put the S-NSSAI (network slice selection permission assistance information) into the Allowed NSSAI.
S06. subsequent other steps of the registration process, see section TS235024.2.2.2.2.
And S07, the AMF (access and mobility management module) sends the Allowed NSSAI (network slice selection permission auxiliary information) and the Rejected NSSAI (network slice selection rejection auxiliary information) to the UE (terminal side) in a Registration Accept message, wherein for the S-NSSAI (single network slice selection auxiliary information) which cannot be served because the load of the slice instance NSI (network slice instance) exceeds a set threshold, the S-NSSAI (single network slice selection auxiliary information) is sent to the UE in a Reject NSSAI (network slice selection rejection auxiliary information) mode, and the condition that the UE cannot select a proper NSI (network slice instance) because the S-NSSAI (single network slice selection auxiliary information) is used when a subsequent PDU (protocol data unit) is established is avoided.
Example five:
the network slice instance configuration method provided in this embodiment is a specific embodiment in the case where reference slice instance load data is selected for a user slice in a PDU (protocol data unit) setup procedure by an AMF (access and mobility management module) when an NSSF (network slice selection module) is not deployed.
Referring to fig. 4, fig. 4 is a flowchart of reference to slice instance load conditions when the network is not deployed with NSSF (network slice selection module), AMF (access and mobility management module) decides slicing results in PDU (protocol data unit) process.
S01. the ue initiates a PDU (protocol data unit) setup request to the AMF (access and mobility management module), which carries the corresponding S-NSSAI (single network slice selection assistance information).
And S02, when determining the NSI (network slice example) slice example corresponding to the user according to the local configuration and the factors such as S-NSSAI (Single network slice selection auxiliary information) and DNN (digital data network), considering the load factor corresponding to the slice example. Slice instances with lower load and below a set threshold are prioritized.
And S03, discovering an SMF (session management module) by the AMF (access and mobile management module) to an NRF (network storage module), wherein the SMF (session management module) carries the NSI (network slice example) selected in the previous step in addition to factors such as S-NSSAI (Single network slice selection auxiliary information) and DNN (network slice instance).
And S04, NRF (network storage library module) selects proper SMF (session management module) according to the discovery condition and returns the SMF to AMF (access and mobile management module).
S05.pdu (protocol data unit) set-up procedure, refer to TS23502 protocol 4.3.2.2 section.
Example six:
the network slice example configuration method provided in this embodiment is a specific embodiment in a case where an AMF (access and mobility management module) receives a notification that a slice load of an NWDAF (network data analysis module) exceeds a threshold, and releases a PDU (protocol data unit) on a slice example.
Referring to fig. 5, fig. 5 is a flowchart of the AMF (access and mobility management module) releasing a PDU (protocol data unit) on a slice instance upon receiving a notification that the slice load of the NWDAF (network data analysis module) exceeds a threshold.
And S01, when the NWDAF (network data analysis module) detects that the load of a certain slice instance exceeds a set threshold value, the AMF (access and mobility management module) subscribing the slice load is informed. The AMF (access and mobile management module) receives the slice instance load data and stores the slice load data.
And S02, receiving the slice instance load data by the AMF (access and mobile management module), and storing the slice load data. If the slice instance is overloaded, the AMF (Access and mobility management Module) checks the PDUs (protocol data units) belonging to the slice and informs the SMF (Session management Module) to release the PDUs (protocol data units) on the slice instance, respectively.
And S03, receiving a response replied by the SMF (session management module) by the AMF (access and mobile management module).
S04 SMF (Session management Module) triggers PDU (protocol data Unit) release, see TS23502 protocol
Amf (access and mobility management module) triggers other PDUs (protocol data units) on the slice until the slice load decreases.
S06.nwdaf (network data analysis module) checks that the slice load is lower than the threshold, and notifies AMF (access and mobility management module) subscribing to the slice load data.
S07. slice load is below threshold, AMF (access and mobility management module) stops PDU (protocol data unit) release.
Example seven:
the network slice instance configuration method provided in this embodiment is a specific embodiment in the case of notifying a terminal when a change in the slice instance load causes a change in user Allowed NSSAI (network slice selection permission assistance information) and Reject NSSAI (network slice selection rejection assistance information).
Referring to fig. 6, fig. 6 is a flowchart of notifying the terminal when a slice instance load change causes a change in the Allowed NSSAI (network slice selection assistance information Allowed) and the Reject NSSAI (network slice selection assistance information rejected).
And S01, if the NWDAF (network data analysis module) detects that the load of a certain slice instance is lower than or exceeds a set threshold value, an AMF (access and mobile management module) subscribing to the slice load is informed.
And S02, receiving the slice instance load data by the AMF (access and mobile management module), and storing the slice load data. If the slice instance load is lower or higher than the set threshold, the AMF (access and mobility management module) checks that the change of the slice instance load status affects the change of the user Allowed NSSAI (network slice selection assistance information Allowed) or Reject NSSAI (network slice selection assistance information denied). The AMF (access and mobility management module) sends a configuration update message to the UE, updating NSSAI (network slice selection assistance information) information.
And S03, the UE replies a configuration updating response.
And S04, if the AMF (access and mobile management module) considers that the change of the Allowed NSSAI (network slice selection auxiliary information) or the Reject NSSAI (network slice selection auxiliary information refusal) of the user requires the terminal to be registered again, triggering the UE Context Release Command, and facilitating the triggering of the terminal to initiate the Registration again.
And S05, replying UE Context Release Complete by the UE.
And S06, the terminal initiates a registration flow.
And S07, performing the above operation for other users to know that the slice load is normal.
Example eight:
the network slice instance configuration method provided in this embodiment is a specific embodiment in a case where an NRF (network repository module) actively acquires and subscribes slice load data from an NWDAF (network data analysis module).
Referring to fig. 7, fig. 7 is a flowchart of the NRF (network repository module) actively obtaining and subscribing slice load data to the NWDAF (network data analysis module).
And S01, the NRF (network storage library module) sends a data analysis request of the NWDAF (network data analysis module) to request the load data of the slice example. The NRF (network repository module) may request load data of all slice instances in the current network from the NWDAF (network data analysis module), or may consider requesting load data of only part of the slice instances.
And S02, receiving a data analysis result returned by the NWDAF (network data analysis module) by the NRF (network storage library module), wherein the data analysis result comprises a slice example and a corresponding load condition.
And S03, saving the slice instance returned by the NWDAF (network data analysis module) and the load condition thereof by the NRF (network storage library module). These slice payload data can be referred to by subsequent users when selecting SMF (session management module) during PDU (protocol data unit) setup.
S04.nrf (network repository module) may actively subscribe to NWDAF (network data analysis module) for slice load data, which may be all slice instances or part of request instances, in addition to actively requesting data analysis results from NWDAF (network data analysis module).
And S05, receiving a subscription response returned by the NWDAF (network data analysis module) by the NRF (network storage library module). The subscription response may protect the load data of each slice at the current time.
And S06, an NRF (network storage library module) can receive a subscription notification message sent by an NWDAF (network data analysis module) at any time, wherein the subscription notification message contains slice load data. The NWDAF (network data analysis module) may periodically inform the NRF (network repository module) and may also inform the NRF (network repository module) when the slice instance load exceeds a certain threshold.
Example nine:
the method for configuring a network slice instance provided in this embodiment is a specific embodiment in the case of referring to slice instance load data when an NRF (network repository module) selects an SMF (session management module) in a PDU (protocol data unit) establishment flow.
Referring to fig. 8, fig. 8 is a flowchart of reference to slice instance load data when an NRF (network repository module) selects an SMF (session management module) in a PDU (protocol data unit) setup procedure.
In fig. 8, the NRF (network repository module) has already acquired slice instance load data from the NWDAF (network data analysis module), and during PDU (protocol data unit) setup, when SMF (session management module) is found by the NRF (network repository module), the NRF (network repository module) filters SMF (session management module) based on slice instance load.
S01. the ue initiates a PDU (protocol data unit) setup request to the AMF (access and mobility management module).
S02. the amf (access and mobility management module) initiates a discovery request to the NRF (network repository module) in order to discover the SMF (session management module).
And S03, besides filtering a proper SMF (session management module) by the SMF (session management module) based on the parameters in the discovery request, referring to the load and the flow of the slice instance where the SMF (session management module) is located. If the load is too high to exceed a certain threshold, the SMF (session management module) corresponding to the slice instance should be removed.
S04.nrf (network repository module) returns discovery result to AMF (access and mobility management module).
S05 subsequent flow of PDU (protocol data Unit) establishment, refer to section T235024.3.2.2
Example ten:
the present embodiment provides a network slice example configuration device, which can be applied to a network configuration end according to the embodiment of the present invention, and as shown in fig. 9, the device includes: a sending module 901, a receiving module 902 and a configuration module 903; the sending module 901 is configured to send network configuration request information to the network data analysis module; the receiving module 902 is configured to receive network configuration information sent by the network data analysis module, where the network configuration information at least includes a load condition of a network slice instance; the configuration module 903 is configured to configure a target network slice instance to the access terminal according to the load condition. For the steps and the specific processes implemented by each module in the apparatus, reference may be made to the processes shown in the above embodiments, which are not described herein again.
The present embodiment further provides a network slice example monitoring device, which can be applied to the network information analysis processing end in the embodiment of the present invention, please refer to fig. 10, where the network slice example monitoring device includes: a transmitting module 1001, a receiving module 1002 and a load monitoring module 1003; the load monitoring module 1003 is configured to monitor and analyze load states of all network slice instances in the network; the receiving module 1002 is configured to receive network configuration request information sent by a network slice instance configuration module; the sending module 1001 is configured to send network configuration information to the network slice instance configuration module, where the network configuration information at least includes a load state of a corresponding network slice instance in the network configuration request information. For the steps and the specific processes implemented by each module in the apparatus, reference may be made to the processes shown in the above embodiments, which are not described herein again.
The embodiment provides a network slice example configuration device and a network slice example monitoring device, wherein the network slice example monitoring device is used for monitoring and analyzing the load state of a network slice example, the network slice example configuration acquires the load state of the network slice example from the network slice example monitoring device, and the network slice example is configured according to the load state of the network slice example, so that the condition that the load of the network slice example is more uniform when an access terminal is accessed into the network slice example with larger load is avoided; meanwhile, because the load conditions of a plurality of network slice instances can be acquired, the configuration is directly carried out by the network slice instance configuration side when the configuration of the network slice instances is carried out, and the load of a network slice instance configuration system is reduced.
Example eleven:
the present embodiment provides an apparatus, as shown in fig. 11, including: a processor 211, a memory 212, a communication unit 213, and a communication bus 214;
the communication bus 214 is used for realizing communication connection among the processor 211, the communication unit 213 and the memory 212;
processor 211 is configured to execute one or more programs stored in memory 212 to implement the steps of the network slice instance configuration method provided by an embodiment of the present invention.
For the steps and the specific processes implemented by each module in the apparatus, reference may be made to the above-mentioned processes, which are not described herein again.
The present embodiments also provide a computer-readable storage medium including volatile or non-volatile, removable or non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, computer program modules or other data. Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other Memory technology, CD-ROM (Compact disk Read-Only Memory), Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer.
The computer-readable storage medium in this embodiment may be used to store one or more computer programs, and the one or more computer programs stored therein may be executed by a processor to implement at least one step of the network slice instance configuration method in embodiments 1 to nine above.
It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software (which may be implemented in computer program code executable by a computing device), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
In addition, communication media typically embodies computer readable instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to one of ordinary skill in the art. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (19)

1.A network slice instance configuration method, the network slice instance configuration method comprising: sending network configuration request information to a network data analysis module NWDAF;
receiving network configuration information sent by the network data analysis module NWDAF;
and determining the load condition of the network slice example according to the network configuration information, and determining the target network slice example accessed by the access terminal according to the load condition.
2. The network slice instance configuration method of claim 1, wherein the network configuration information comprises: and feedback network configuration information returned according to the network configuration request information, and/or active network configuration information actively sent by the network data analysis module.
3. The method of claim 2, wherein the determining the load condition of the network slice instance according to the network configuration information comprises: directly acquiring the load condition of the network slice instance from the network configuration information, and/or acquiring the load data of the network slice instance from the network configuration information, and analyzing the load data to determine the load condition of the network slice instance;
the network slice instance comprises all network slice instances, or a portion of network slice instances.
4. The network slice instance configuration method according to claim 3, characterized in that when the network configuration information sent by the network data analysis module is received by an access and mobility management module AMF;
the access and mobility management module AMF determines the load condition of a network slice instance from the network configuration information;
and when a network access request of an access terminal is received, sending the load condition to the access terminal for sending, wherein the load condition is used for determining a target network slice example accessed by the access terminal.
5. The network slice instance configuration method of claim 4, wherein the access terminal accessing a target network slice instance comprises: the access is carried out by a network Registration process or a Protocol Data Unit (PDU) establishment process.
6. The method of claim 5, wherein when no network slice selection module (NSSF) is deployed in the network and the access terminal accesses a target network slice instance in a network Registration procedure;
the access and mobile management module AMF receives a network Registration request of the access terminal and sends a network slice selection auxiliary information request to a unified data management module UDM signed by the access terminal;
receiving network slice selection auxiliary information NSSAI returned by the unified data management module UDM, and judging the load state of a network slice instance NSI corresponding to the single network slice selection auxiliary information S-NSSAI;
when the load state of the single network slice selection auxiliary information S-NSSAI exceeds a threshold value, placing the corresponding single network slice selection auxiliary information S-NSSAI in Rejected network slice selection auxiliary information Rejected NSSAI; when the load state of the single-network slice selection auxiliary information S-NSSAI does not exceed the threshold value, placing the corresponding single-network slice selection auxiliary information S-NSSAI in Allowed network slice selection auxiliary information Allowed;
adding Rejected network slice selection auxiliary information Rejected NSSAI and Allowed network slice selection auxiliary information Allowed NSSAI in Registration acceptance Accept, and sending the Rejected NSSAI and Allowed network slice selection auxiliary information Allowed NSSAI to the access terminal for determining a target network slice example accessed by the access terminal.
7. The network slice instance configuration method of claim 6, wherein when the load condition of the target network slice instance changes, it is determined whether the changed load condition exceeds a threshold value;
if the threshold value is exceeded, configuration updating information is sent to the access terminal;
and receiving configuration updating response information returned by the access terminal, and determining whether the access terminal needs to perform network Registration again according to the configuration updating response information.
8. The method of claim 5, wherein when no network slice selection module (NSSF) is deployed in the network and the access terminal accesses the target network slice instance in a PDU establishment procedure;
the AMF receives a Protocol Data Unit (PDU) establishment request of the access terminal, wherein the PDU establishment request comprises corresponding single network slice selection auxiliary information S-NSSAI;
determining a target network slice instance corresponding to the access terminal according to at least one of the network configuration information, the local configuration information and the single network slice selection auxiliary information S-NSSAI;
adding at least one of the network configuration information, the local configuration information and the single network slice selection auxiliary information S-NSSAI and the target network slice instance into a discovery session management module request, and sending the discovery session management module request to a network storage library module NRF;
and receiving a corresponding session management module SMF returned by the network storage library module NRF, and establishing a protocol data unit PDU flow.
9. The network slice instance configuration method of claim 8, wherein when the load condition of the target network slice instance changes, it is determined whether the changed load condition exceeds a threshold value;
if the threshold value is exceeded, detecting a protocol data unit PDU corresponding to the network slice example exceeding the threshold value, and sending a detection result to a session management module SMF;
and receiving response information returned by the session management module SMF, and determining the number of Protocol Data Units (PDU) needing to be released according to the response information.
10. A network slice instance configuration method according to claim 3, characterized in that when the network configuration information sent by the network data analysis module is received by the network repository module NRF;
the network storage library module NRF determines the load condition of the network slice instance from the network configuration information;
receiving a discovery session management module request of an access and mobile management module AMF, and returning optional session management module information to the access and mobile management module AMF; the optional session management module information is used for the access and mobility management module AMF to determine a session management module SMF to determine a target network slice instance accessed by the access terminal.
11. The method of claim 10, wherein when no network slice selection module (NSSF) is deployed in the network and the access terminal accesses the target network slice instance in a PDU establishment procedure;
the network repository module NRF receives a discovery session management module request of the access and mobility management module AMF, the discovery session management module request comprising: at least one of local configuration information and the single network slice selection assistance information S-NSSAI;
determining an optional session management module (SMF) according to the load condition of the network slice example, and returning the optional session management module information to the access and mobile management module (AMF); the optional session management module information is used for the access and mobility management module AMF and the access terminal to establish a protocol data unit PDU.
12. A method for sending a network slice instance load condition, the method comprising:
monitoring and analyzing the load states of all network slice instances in the network;
when network configuration request information sent by a network slice instance configuration module is received, returning network configuration information to the network slice instance configuration module according to the network configuration request information, wherein the network configuration information at least comprises the load state of a corresponding network slice instance.
13. The method of claim 12, wherein the network slice instance configuration module comprises: the access and mobility management module AMF and the network repository module NRF.
14. The method of claim 12, wherein the network configuration request message comprises: real-time status request information and subscription status request information;
when the real-time condition request information is received, network configuration information needs to be immediately returned to the network slice instance configuration module;
and when the subscription status request information is received, returning network configuration information to the network slice instance configuration module according to the built-in time period or the trigger condition of the subscription status request information.
15. The method of claim 12, wherein the method of sending the network slice instance load condition further comprises:
and when the load state of the network slice example is detected to exceed the threshold value, sending active network configuration information to a network slice example configuration module corresponding to the network slice example exceeding the threshold value.
16. An apparatus for configuring an instance of a network slice, comprising: the device comprises a sending module, a receiving module and a configuration module;
the sending module is used for sending network configuration request information to the network data analysis module;
the receiving module is used for receiving the network configuration information sent by the network data analysis module, wherein the network configuration information at least comprises the load condition of the network slice instance;
the configuration module is used for configuring a target network slice instance to the access terminal according to the load condition.
17. A network slice instance monitoring apparatus, comprising: the system comprises a sending module, a receiving module and a load monitoring module;
the load monitoring module is used for monitoring and analyzing the load states of all network slice instances in the network;
the receiving module is used for receiving network configuration request information sent by the network slice instance configuration module;
the sending module is configured to send network configuration information to the network slice instance configuration module, where the network configuration information at least includes a load state of a corresponding network slice instance in the network configuration request information.
18. An apparatus, comprising: a processor, a memory, a communication unit, and a communication bus;
the communication bus is used for realizing wireless communication connection among the processor, the communication unit and the memory;
the processor is configured to execute one or more programs stored in the memory to implement the steps of the network slice instance configuration method of any of claims 1 to 11.
19. A computer readable storage medium storing one or more computer programs, the one or more computer programs being executable by one or more processors to implement the steps of the network slice instance configuration method as claimed in any one of claims 1 to 11.
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