CN115334611A - Access or switching method, device, AMF and storage medium - Google Patents

Access or switching method, device, AMF and storage medium Download PDF

Info

Publication number
CN115334611A
CN115334611A CN202110507773.9A CN202110507773A CN115334611A CN 115334611 A CN115334611 A CN 115334611A CN 202110507773 A CN202110507773 A CN 202110507773A CN 115334611 A CN115334611 A CN 115334611A
Authority
CN
China
Prior art keywords
network function
amf
access
target amf
network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110507773.9A
Other languages
Chinese (zh)
Inventor
王丹
李永竞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
Original Assignee
China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Mobile Communications Group Co Ltd, China Mobile Communications Ltd Research Institute filed Critical China Mobile Communications Group Co Ltd
Priority to CN202110507773.9A priority Critical patent/CN115334611A/en
Priority to PCT/CN2022/091928 priority patent/WO2022237766A1/en
Publication of CN115334611A publication Critical patent/CN115334611A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support

Landscapes

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

Abstract

The application discloses an access or switching method, an access or switching device, an AMF and a storage medium, wherein the method comprises the following steps: when a terminal is switched from source AMF access to target AMF access, the source AMF sends first network function information; the source AMF receives first response information of the target AMF; wherein the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.

Description

Access or switching method, device, AMF and storage medium
Technical Field
The present application relates to the field of wireless technologies, and in particular, to a handover method, apparatus, access and Mobility Management Function (AMF), and storage medium.
Background
By deploying a Network Slice Admission Control Function (NSACF) on a Network slice, corresponding Service Level Agreement (SLA) guarantees can be achieved, including controlling the maximum number of users of the Network slice, the maximum number of session connections, and the like. In the related art, when more than two nsafcs are correspondingly deployed for a Single Network Slice Selection Assistance Information (S-nsai), reasonable Selection of an NSACF cannot be achieved.
Disclosure of Invention
In order to solve the related technical problem, embodiments of the present application provide an access or handover method, an apparatus, an AMF, and a storage medium.
The technical scheme of the embodiment of the application is realized as follows:
the embodiment of the application provides an Access or handover method, when a terminal is switched from a source Access and Mobility Management Function (AMF) Access to a target AMF Access, the method comprises the following steps:
the source AMF sends first network function information;
the source AMF receives first response information of the target AMF; wherein,
the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
In the above solution, the first response information indicates at least one of:
whether the target AMF can communicate with the first network function;
whether the target AMF can obtain the service of the first network function;
whether the target AMF is within a service range of the first network function.
In the foregoing solution, the first network function information includes:
an identity of the first network function, and/or an address of the first network function.
In the above scheme, the method further comprises:
in case the first response information characterizes that the target AMF cannot be served by or communicate with the first network function, the source AMF initiates an update procedure to the first network function.
In the foregoing solution, the update process includes:
the source AMF updates the number of terminals and/or the number of sessions to the first network function corresponding to the S-NSSAI.
In the above scheme, the number of the terminals includes the number of network slices corresponding to the terminal access S-NSSAI; the session number includes the number of sessions established by the terminal in the corresponding network slice by using the S-NSSAI.
In the above solution, the first network function includes an NSACF, and/or an instance of an NSACF, and/or other network functions or instances capable of counting the number of network slice access terminals or access sessions.
The embodiment of the present application further provides an access or handover method, where when a terminal is switched from a source AMF access to a target AMF access, the method includes:
the target AMF receives the first network function information;
the target AMF sends first response information; wherein,
the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
In the above solution, the first response information indicates at least one of:
whether the target AMF can communicate with the first network function;
whether the target AMF can obtain the service of the first network function;
whether the target AMF is within a service range of the first network function.
In the above scheme, the method further comprises:
in the case that the target AMF cannot be served by or communicate with the first network function, the target AMF selects a second network function;
and the target AMF initiates an updating flow to the second network function.
In the foregoing solution, the update process includes:
the target AMF updates the number of terminals and/or the number of sessions to the second network function corresponding to the S-NSSAI.
In the above scheme, the number of the terminals includes the number of network slices corresponding to the terminal access S-NSSAI; the session number includes the number of sessions established by the terminal in the corresponding network slice by using the S-NSSAI.
In the above solution, the second network function includes an NSACF, and/or an instance of an NSACF, and/or other network functions or instances capable of counting the number of network slice access terminals or access sessions.
An embodiment of the present application further provides an access or handover apparatus, including:
the terminal comprises a first sending unit, a second sending unit and a third sending unit, wherein the first sending unit is used for sending first network function information when the terminal is switched from source AMF access to target AMF access;
a first receiving unit, configured to receive first response information of the target AMF; wherein,
the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
An embodiment of the present application further provides an access or handover apparatus, including:
the second receiving unit is used for receiving the first network function information when the terminal is switched from the source AMF access to the target AMF access;
a second transmitting unit for transmitting the first response information; wherein,
the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
An embodiment of the present application further provides an AMF, including: a first processor and a first communication interface; wherein,
the first communication interface is used for sending first network function information when the terminal is switched from source AMF access to target AMF access; and receiving first response information of the target AMF; wherein,
the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
An embodiment of the present application further provides an AMF, including: a second processor and a second communication interface; wherein,
the second communication interface is used for receiving the first network function information when the terminal is switched from the source AMF access to the target AMF access; and sending the first response information; wherein,
the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
An embodiment of the present application further provides an AMF, including: a processor and a first memory for storing a computer program capable of running on the processor,
wherein the processor is configured to perform the steps of any of the above methods when running the computer program.
The embodiment of the present application further provides a storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of any one of the above methods.
When a terminal is switched from a source AMF access to a target AMF access, the method comprises the following steps: the source AMF sends first network function information; the source AMF receives first response information of the target AMF; wherein the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information. By the scheme, the reasonable selection of the network function service can be realized when the terminal performs AMF switching under the condition that more than two network function services are correspondingly deployed in the S-NSSAI, and SLA control on the network slice is optimized.
Drawings
Fig. 1 is a schematic flowchart of an access or handover method according to an embodiment of the present application;
fig. 2 is a schematic flow chart of another access or handover method according to an embodiment of the present application;
fig. 3 is a schematic flowchart of an access or handover method according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an access or handover apparatus according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of another access or handover apparatus according to an embodiment of the present application;
FIG. 6 is a schematic diagram of an AMF structure according to an embodiment of the present application;
FIG. 7 is a schematic diagram of another AMF structure according to an embodiment of the present application.
Detailed Description
By deploying the NSACF on the network slice, corresponding SLA guarantees can be achieved, including controlling the maximum number of users, the maximum number of session connections, and the like of the network slice. In the related art, only one NSACF is deployed for one Network slice from the perspective of the whole Public Land Mobile Network (PLMN), so that when receiving a request about a certain Network slice, all AMFs and/or Session Management Functions (SMFs) request the same NSACF to add or subtract statistical data. For example, for a mobile communication network with a large number of subscribers, the application a reserves a network slice of 10 universal subscribers, so that when all AMFs in the entire PLMN are online each time and/or all SMFs establish a session each time, a corresponding NSACF is requested to add or subtract statistical data, thereby causing overload of the corresponding NSACF and affecting the service processing efficiency. For the above situation, a relevant operator usually deploys a pair of nsadcfs for S-NSSAI, and in the relevant technology, there is no effective scheme for reasonably selecting an NSACF in the case where more than two nsadcfs are correspondingly deployed for S-NSSAI.
Based on this, in this embodiment of the present application, when the terminal is switched from the source AMF access to the target AMF access, the method includes: the source AMF sends first network function information; the source AMF receives first response information of the target AMF; wherein the first response information characterizes whether the target AMF can be served or communicate with the first network function indicated in the first network function information. By the scheme, the reasonable selection of the network function service can be realized when the terminal performs AMF switching under the condition that more than two network function services are correspondingly deployed in the S-NSSAI, and SLA control on the network slice is optimized.
The present application will be described in further detail with reference to the following drawings and examples.
An embodiment of the present application provides an access or handover method, which is applied to a source AMF when a terminal is switched from a source AMF access to a target AMF access, and as shown in fig. 1, when the terminal is switched from the source AMF access to the target AMF access, the method includes:
step 101: the source AMF transmits the first network function information.
In actual application, the source AMF may send the first network function information to the target AMF, or the source AMF may send the first network function information to another network element, and the other network element transmits the first network function information to the target AMF. The first network function information indicates a first network function, and when actually applied, the first network function includes an NSACF and/or an instance of an NSACF, and/or other network functions or instances capable of counting the number of network slice access terminals or the number of access sessions. It is to be understood that here the source AMF supports interworking with the first network function, in other words, the source AMF can be served by or can communicate with the first network function.
In one embodiment, the first network function information includes:
an identity of the first network function, and/or an address of the first network function.
Taking the first network function as the NSACF as an example, the corresponding first network function information may indicate an identifier of the NSACF or address information of the NSACF.
Step 102: the source AMF receives first response information of the target AMF.
Wherein the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
In an embodiment, the first response information indicates at least one of:
whether the target AMF can communicate with the first network function;
whether the target AMF can obtain the service of the first network function;
whether the target AMF is within a service range of the first network function.
In practical application, when the AMF does not support communication with the NSACF, or when the AMF cannot obtain a service of the NSACF, or the AMF is not in a service range of the NSACF, the AMF cannot request to update statistical data for a case that a terminal accesses a network slice corresponding to the S-nsai or the terminal uses the S-nsai to establish a session in the corresponding network slice. Therefore, the source AMF can determine whether the target AMF can be served by or communicate with the NSACF by the first response information fed back by the target AMF, and select the corresponding NSACF according to the first response information.
In an embodiment, the method further comprises:
in case the first response information characterizes that the target AMF cannot be served by or communicate with the first network function, the source AMF initiates an update procedure to the first network function.
Here, in a case where the target AMF cannot be served by or communicate with the first network function, although the terminal goes to access from the target AMF, at this time, an update procedure is initiated by the source AMF to the first network function, thereby implementing statistics on the number of network slice access terminals or the number of access sessions.
Here, the update flow includes:
the source AMF updates the number of terminals and/or the number of sessions to the first network function corresponding to the S-NSSAI.
The number of the terminals comprises the number of network slices corresponding to S-NSSAI accessed by the terminals; the session number includes the number of sessions established by the terminal in the corresponding network slice by using the S-NSSAI.
An embodiment of the present application further provides an access or handover method, which is applied to a target AMF when a terminal is switched from a source AMF access to a target AMF access, and as shown in fig. 2, when the terminal is switched from the source AMF access to the target AMF access, the method includes:
step 201: the target AMF receives the first network function information.
In practical application, the target AMF may receive the first network function information sent by the source AMF, or the source AMF may send the first network function information to another network element, and the other network element transmits the first network function information to the target AMF. The first network function information indicates a first network function, and when actually applied, the first network function includes an NSACF, and/or an instance of an NSACF, and/or other network functions or instances capable of counting the number of network slice access terminals or the number of access sessions. It will be appreciated that here the source AMF supports interworking with the first network function, in other words, the source AMF is capable of being served by or communicating with the first network function.
Step 202: the target AMF transmits the first response information.
Wherein the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
In an embodiment, the first response information indicates at least one of:
whether the target AMF can communicate with the first network function;
whether the target AMF can obtain the service of the first network function;
whether the target AMF is within a service range of the first network function.
In practical application, when the AMF does not support communication with the NSACF, or when the AMF cannot obtain a service of the NSACF, or the AMF is not in a service range of the NSACF, the AMF cannot request to update statistical data for a case that a terminal accesses a network slice corresponding to the S-nsai or the terminal uses the S-nsai to establish a session in the corresponding network slice. Therefore, the source AMF can determine whether the target AMF can be served by or communicate with the NSACF by the first response information fed back by the target AMF, and select the corresponding NSACF according to the first response information.
In an embodiment, the method further comprises:
in the case that the target AMF cannot be served by or communicate with the first network function, the target AMF selects a second network function;
and the target AMF initiates an updating flow to the second network function.
Here, in a case where the target AMF cannot be served by or communicate with the first network function, the target AMF selects the second network function and initiates an update procedure to the second network function, thereby implementing statistics on the number of network slice access terminals or the number of access sessions. It is understood that the initiating of the update procedure by the target AMF to the second network function is applicable to the case where more than two network function services are deployed corresponding to the S-NSSAI, and the source AMF supports interworking with the second network function, in other words, the source AMF can be served by or can communicate with the second network function.
In practical application, when the target AMF cannot interwork with the first network Function indicated in the first network Function information, the target AMF needs to obtain an NSACF list supporting interworking by querying a network storage Function (NRF), and select a second network Function from the NSACF list.
In practice, the second network function includes an NSACF, and/or an instance of an NSACF, and/or other network functions or instances capable of counting the number of network slice access terminals or access sessions.
Therefore, when the terminal is switched from source AMF access to target AMF access, the NSACF can be reselected and switched to the NSACF supporting intercommunication of the target AMF, so that the reasonable selection of network function service is realized, and the SLA control on the network slice is optimized.
Here, the update flow includes:
the target AMF updates the number of terminals and/or the number of sessions to the second network function corresponding to the S-NSSAI.
The number of the terminals comprises the number of network slices corresponding to the S-NSSAI accessed by the terminals; the session number includes the number of sessions established by the terminal in the corresponding network slice by using the S-NSSAI.
The present application will be described in further detail with reference to the following application examples.
In the embodiment of the application, at least two NSACFs are deployed in a network slice corresponding to an S-NSSAI, wherein the maximum number of users accessed to the network slice corresponding to the S-NSSAI is allocated among the multiple NSACFs according to service estimation. For example, service a signs a network slice 1 with a maximum number of 10 ten thousand users, and a plurality of nsafcs are deployed on the network slice 1, so that the maximum number of 10 ten thousand users is allocated among the plurality of nsafcs according to the service density. Here, the multiple nsafcs are not intercommunicated, and the adjustment of the statistical data on each NSACF about the number of users accessed belongs to the service category, and is implemented by offline adjustment by the network management system.
Referring to fig. 3, the implementation flow of the embodiment of the present application is as follows:
1. and the Source Radio Access network (S-RAN) sends a Handover request message (Handover Required) to the Source AMF (S-AMF).
In practical application, in a network slice, when the terminal moves beyond the coverage of the current AMF, the AMF switching is triggered.
2. The source AMF selects a target AMF (T-AMF) (T-AMF selection).
3. The source AMF sends a request for creating the terminal context to the target AMF, wherein the request for creating the terminal context at least carries the context information (NSACF ID(s) of the terminal, and Allowed NSSAI).
Here, the Allowed NSSAI is Network Slice auxiliary Selection Information (NSSAI) provided by the serving PLMN during registration of the terminal, and indicates an identifier of a Network Slice that can be used by the terminal in a current registration domain, where each Network Slice is indicated by an S-NSSAI; NSACF ID(s) characterizes the identity of the source AMF supporting an interworking NSACF.
4. And the target AMF confirms the S-NSSAI supported by the target AMF and the unsupported S-NSSAI according to the NSACF and the NSSAI indicated in the context information of the terminal, and confirms that the target AMF supports the interworking NSACF and does not support the interworking NSACF.
5. The target AMF feeds back a Handover Request (Handover Request) to the target RAN (T-RAN), and the target RAN feeds back OK to the target AMF.
6. The target AMF feeds back a context response of the creation terminal to the source AMF, which indicates that the switching operation can be executed, and carries S-NSSAI which is not supported by the target AMF and indication information used for indicating that the NSACF which supports the interworking and the NSACF which does not support the interworking in the context response of the creation.
In actual application, the Request for creating the terminal context, which is sent by the source AMF to the target AMF, may be a Namf _ Communication _ createeuecontext Request, and correspondingly, the Response for creating the terminal context may be a Namf _ Communication _ createeuecontext Response.
The above steps are the handover preparation phase of the present application embodiment, and the handover execution phase of the present application embodiment will be described below.
7. The source AMF initiates a handover command to the source RAN. The source RAN initiates a handover command to the terminal.
8. The terminal initiates a handover confirmation to the target RAN. The target RAN initiates a handover notification to the target AMF.
9. The target AMF uses the Namf _ Communication _ N2infoNotify service and subscribes to the source AMF a Timer (Timer) that the source AMF uses to supervise the release of source RAN resources.
10. Aiming at the fact that the S-NSSAI which is not supported by the target AMF and/or the NSACF which is not supported by the target AMF do not support the intercommunicated NSACF, the source AMF applies for updating the corresponding network slice statistical data from the S-NSACF, or the target AMF newly selects the T-NSACF and applies for updating the corresponding network slice statistical data from the T-NSACF.
Here, the S-NSACF characterizes the source AMF supporting interworking NSACF in Allowed NSSAI.
Updating the statistical data corresponding to the S-NSSAI in the NSACF, including adding 1 to the statistical data on the NSACF according to a general Public user identity (GPSI) or a user Permanent identity (SUPI) of the terminal when the terminal accesses the corresponding network slice or when the terminal establishes a session in the corresponding network slice, and subtracting 1 from the statistical data on the NSACF when the terminal disconnects the session in the corresponding network slice.
Optionally, for an NSACF supporting interworking by the target AMF, the source AMF informs the corresponding NSACF of address information or an identifier of the target AMF, so as to implement interworking between the target AMF and the corresponding NSACF.
11. The source AMF deletes the context information of the terminal on the source-RAN.
According to the scheme provided by the embodiment of the application, when the terminal is switched from source AMF access to target AMF access, the source AMF sends the first network function information; the source AMF receives first response information of the target AMF; wherein the first response information characterizes whether the target AMF can be served or communicate with the first network function indicated in the first network function information. By the scheme, the reasonable selection of the network function service can be realized when the terminal performs AMF switching under the condition that more than two network function services are correspondingly deployed in the S-NSSAI, and SLA control on the network slice is optimized.
In order to implement the method of the embodiment of the present application, an embodiment of the present application further provides an access or handover apparatus, which is disposed on a source AMF when a terminal is switched from a source AMF to a target AMF, as shown in fig. 4, and the apparatus includes:
a first sending unit 401, configured to send first network function information;
a first receiving unit 402, configured to receive first response information of the target AMF.
Wherein the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
Wherein, in an embodiment, the first response information indicates at least one of:
whether the target AMF can communicate with the first network function;
whether the target AMF can obtain the service of the first network function;
whether the target AMF is within a service range of the first network function.
In one embodiment, the first network function information includes:
an identity of the first network function, and/or an address of the first network function.
In one embodiment, the apparatus further comprises:
a first updating unit, configured to, in a case that the first response information indicates that the target AMF cannot be served by or cannot communicate with the first network function, initiate an update procedure to the first network function by the source AMF.
In one embodiment, the update procedure includes:
the source AMF updates the number of terminals and/or the number of sessions to the first network function corresponding to the S-NSSAI.
In an embodiment, the number of terminals includes the number of network slices corresponding to the terminal access S-NSSAI; the session number includes the number of sessions established by the terminal in the corresponding network slice by using the S-NSSAI.
In an embodiment, the first network function comprises an NSACF, and/or an instance of an NSACF, and/or other network functions or instances capable of counting the number of network slice access terminals or access sessions.
In practical applications, the first sending unit 401 and the first receiving unit 402 may be implemented by a communication interface in the access or switching apparatus, and the first updating unit may be implemented by a communication interface in the access or switching apparatus in combination with a processor.
In order to implement the method of the embodiment of the present application, an embodiment of the present application further provides an access or handover apparatus, which is disposed on a target AMF when a terminal is switched from a source AMF to a target AMF, as shown in fig. 5, and the apparatus includes:
a second receiving unit 501, configured to receive the first network function information;
a second sending unit 502, configured to send the first response information.
Wherein the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
Wherein, in an embodiment, the first response information indicates at least one of:
whether the target AMF can communicate with the first network function;
whether the target AMF can obtain the service of the first network function;
whether the target AMF is within a service range of the first network function.
In one embodiment, the apparatus further comprises:
a selecting unit for selecting a second network function in case that the target AMF cannot be served by or communicate with the first network function;
and the second updating unit is used for initiating an updating flow to the second network function.
In one embodiment, the update procedure includes:
the target AMF updates the number of terminals and/or the number of sessions to the second network function corresponding to the S-NSSAI.
In an embodiment, the number of terminals includes the number of network slices corresponding to the terminal access S-NSSAI; the session number includes the number of sessions established by the terminal in the corresponding network slice by using the S-NSSAI.
In an embodiment, the second network function comprises an NSACF, and/or an instance of an NSACF, and/or other network functions or instances capable of counting the number of network slice access terminals or access sessions.
In practical applications, the second receiving unit 501 and the second sending unit 502 may be implemented by a communication interface in an access or switching device, and the selecting unit and the second updating unit may be implemented by a communication interface in the access or switching device in combination with a processor.
It should be noted that: in the access or switching device provided in the above embodiment, only the division of the program modules is illustrated when performing access or switching, and in practical applications, the processing allocation may be completed by different program modules according to needs, that is, the internal structure of the device may be divided into different program modules to complete all or part of the processing described above. In addition, the access or handover apparatus provided in the foregoing embodiments and the access or handover method embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments and are not described herein again.
Based on the hardware implementation of the program module, and in order to implement the method on the source AMF side in the embodiment of the present application, an embodiment of the present application further provides an AMF, as shown in fig. 6, an AMF600 includes:
a first communication interface 601, which is capable of performing information interaction with other network nodes;
the first processor 602 is connected to the first communication interface 601 to implement information interaction with other network nodes, and is configured to execute a method provided by one or more technical solutions of the source AMF side when running a computer program. And the computer program is stored on the first memory 603.
Specifically, the first communication interface 601 is configured to send first network function information; and receiving first response information of the target AMF.
Wherein the first response information characterizes whether the target AMF can be served or communicate with the first network function indicated in the first network function information.
Wherein, in an embodiment, the first response information indicates at least one of:
whether the target AMF can communicate with the first network function;
whether the target AMF can obtain the service of the first network function;
whether the target AMF is within a service range of the first network function.
In one embodiment, the first network function information includes:
an identity of the first network function, and/or an address of the first network function.
In an embodiment, the first communication interface 601 is further configured to:
initiating an update procedure to the first network function in case the first response information characterizes that the target AMF cannot be served by or communicate with the first network function.
In one embodiment, the update procedure includes:
the source AMF updates the number of terminals and/or the number of sessions to the first network function corresponding to the S-NSSAI.
In an embodiment, the number of terminals includes the number of network slices corresponding to the terminal access S-NSSAI; the session number includes the number of sessions established by the terminal in the corresponding network slice by using the S-NSSAI.
In an embodiment, the first network function comprises an NSACF, and/or an instance of an NSACF, and/or other network functions or instances capable of counting the number of network slice access terminals or access sessions.
It should be noted that: the specific processing procedures of the first processor 602 and the first communication interface 601 can be understood with reference to the above-described method.
Of course, in practice, the various components in the AMF600 are coupled together by a bus system 604. It is understood that the bus system 604 is used to enable communications among the components. The bus system 604 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 604 in fig. 6.
The first memory 603 in the embodiment of the present application is used to store various types of data to support the operation of the AMF 600. Examples of such data include: any computer program for operating on the AMF 600.
The method disclosed in the embodiment of the present application may be applied to the first processor 602, or implemented by the first processor 602. The first processor 602 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by an integrated logic circuit of hardware or an instruction in the form of software in the first processor 602. The first Processor 602 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The first processor 602 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the first memory 603, and the first processor 602 reads the information in the first memory 603 and, in conjunction with its hardware, performs the steps of the foregoing method.
In an exemplary embodiment, the AMF600 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, programmable Logic Devices (PLDs), complex Programmable Logic Devices (CPLDs), field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the foregoing methods.
Based on the hardware implementation of the program module, and in order to implement the method on the target AMF side in the embodiment of the present application, an embodiment of the present application further provides an AMF, as shown in fig. 7, where the AMF700 includes:
a second communication interface 701 capable of performing information interaction with other network nodes;
the second processor 702 is connected to the second communication interface 701, so as to implement information interaction with other network nodes, and is configured to execute the method provided by one or more technical solutions of the target AMF side when running a computer program. And the computer program is stored on the second memory 703.
Specifically, the second communication interface 701 is configured to receive the first network function information when the terminal is switched from the source AMF access to the target AMF access; and sending the first response information; wherein,
the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
Wherein, in an embodiment, the first response information indicates at least one of:
whether the target AMF can communicate with the first network function;
whether the target AMF can obtain the service of the first network function;
whether the target AMF is within a service range of the first network function.
In one embodiment, the second processor 702 is configured to:
selecting a second network function in case the target AMF cannot be served or communicate with the first network function;
the second communication interface 701 is configured to initiate an update procedure to the second network function.
In one embodiment, the update procedure includes:
the target AMF updates the number of terminals and/or the number of sessions to the second network function corresponding to the S-NSSAI.
In an embodiment, the number of terminals includes the number of network slices corresponding to the terminal access S-NSSAI; the session number includes the number of sessions established by the terminal in the corresponding network slice by using the S-NSSAI.
In an embodiment, the second network function comprises an NSACF, and/or an instance of an NSACF, and/or other network functions or instances capable of counting the number of network slice access terminals or access sessions.
It should be noted that: the specific processing procedures of the second processor 702 and the second communication interface 701 may be understood with reference to the above-described methods.
Of course, in practice, the various components in the AMF700 are coupled together by a bus system 704. It is understood that the bus system 704 is used to enable communications among the components. The bus system 704 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 7 as the bus system 704.
The second memory 703 in the embodiment of the present application is used to store various types of data to support the AMF700 operation. Examples of such data include: any computer program for operating on the AMF 700.
The method disclosed in the embodiments of the present application can be applied to the second processor 702, or implemented by the second processor 702. The second processor 702 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by an integrated logic circuit of hardware or an instruction in the form of software in the second processor 702. The second processor 702 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 702 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the second memory 703, and the second processor 702 reads the information in the second memory 703, and completes the steps of the foregoing method in combination with its hardware.
In an exemplary embodiment, the AMF700 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general purpose processors, controllers, MCUs, microprocessors, or other electronic components for performing the aforementioned methods.
It is understood that the memories (the first memory 603 and the second memory 703) of the embodiments of the present application may be volatile memories or nonvolatile memories, and may include both volatile and nonvolatile memories. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a magnetic random access Memory (Flash Memory), a magnetic surface Memory, an optical Disc, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), synchronous Static Random Access Memory (SSRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), synchronous Dynamic Random Access Memory (SLDRAM), direct Memory (DRmb Access), and Random Access Memory (DRAM). The memories described in the embodiments of the present application are intended to comprise, without being limited to, these and any other suitable types of memory.
In an exemplary embodiment, the present application further provides a storage medium, specifically a computer-readable storage medium, for example, a first memory 603 storing a computer program, which can be executed by the first processor 602 of the AMF600 to complete the steps of the source AMF side method. Further, for example, the second memory 703 may include a computer program that is executable by the second processor 702 of the AMF700 to perform the steps described above for the target AMF side approach. The computer readable storage medium may be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM.
It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The technical means described in the embodiments of the present application may be arbitrarily combined without conflict.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.

Claims (19)

1. An access or handover method, when a terminal changes from a source access and mobility management function (AMF) access to a target AMF access, the method comprising:
the source AMF sends first network function information;
the source AMF receives first response information of the target AMF; wherein,
the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
2. The method of claim 1, wherein the first response information indicates at least one of:
whether the target AMF can communicate with the first network function;
whether the target AMF can obtain the service of the first network function;
whether the target AMF is within a service range of the first network function.
3. The method of claim 1, wherein the first network function information comprises:
an identity of the first network function, and/or an address of the first network function.
4. The method of claim 1, further comprising:
in case the first response information characterizes that the target AMF cannot be served by or communicate with the first network function, the source AMF initiates an update procedure to the first network function.
5. The method of claim 4, wherein the update procedure comprises:
and the source AMF updates the terminal quantity and/or the session quantity to the first network function corresponding to the auxiliary information S-NSSAI of the single network slice.
6. The method of claim 5, wherein the number of terminals includes a number of network slices corresponding to terminal access S-NSSAI; the session number includes the number of sessions established by the terminal in the corresponding network slice by using the S-NSSAI.
7. Method according to any of claims 1 to 6, wherein the first network function comprises a network slice admission control function, NSACF, and/or an instance of a NSACF, and/or other network functions or instances capable of counting the number of network slice access terminals or access sessions.
8. An access or handover method, when a terminal changes from a source AMF access to a target AMF access, the method comprising:
the target AMF receives the first network function information;
the target AMF sends first response information; wherein,
the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
9. The method of claim 8, wherein the first response information indicates at least one of:
whether the target AMF can communicate with the first network function;
whether the target AMF can obtain the service of the first network function;
whether the target AMF is within a service range of the first network function.
10. The method of claim 8, further comprising:
in the case that the target AMF cannot be served by or communicate with the first network function, the target AMF selects a second network function;
and the target AMF initiates an updating process to the second network function.
11. The method of claim 10, wherein the updating process comprises:
the target AMF updates the number of terminals and/or the number of sessions to the second network function corresponding to the S-NSSAI.
12. The method of claim 11, wherein the number of terminals includes a number of network slices corresponding to terminal access S-NSSAI; the session number includes the number of sessions established by the terminal in the corresponding network slice by using the S-NSSAI.
13. Method according to any of claims 8 to 12, wherein the second network function comprises an NSACF and/or an instance of an NSACF and/or other network functions or instances capable of counting the number of network slice access terminals or access sessions.
14. An access or handover apparatus, comprising:
the terminal comprises a first sending unit, a second sending unit and a third sending unit, wherein the first sending unit is used for sending first network function information when the terminal is switched from source AMF access to target AMF access;
a first receiving unit, configured to receive first response information of the target AMF; wherein,
the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
15. An access or handover apparatus, comprising:
the second receiving unit is used for receiving the first network function information when the terminal is switched from the source AMF access to the target AMF access;
a second transmitting unit for transmitting the first response information; wherein,
the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
16. An AMF, comprising: a first processor and a first communication interface; wherein,
the first communication interface is used for sending first network function information when the terminal is switched from source AMF access to target AMF access; and receiving first response information of the target AMF; wherein,
the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
17. An AMF, comprising: a second processor and a second communication interface; wherein,
the second communication interface is used for receiving the first network function information when the terminal is switched from the source AMF access to the target AMF access; and sending the first response information; wherein,
the first response information characterizes whether the target AMF can be served by or communicate with the first network function indicated in the first network function information.
18. An AMF, comprising: a processor and a first memory for storing a computer program capable of running on the processor,
wherein the processor is adapted to perform the steps of the method of any one of claims 1 to 7, or to perform the steps of the method of any one of claims 8 to 13, when the computer program is run.
19. A storage medium having stored thereon a computer program for performing the steps of the method of any one of claims 1 to 7 or the steps of the method of any one of claims 8 to 13 when executed by a processor.
CN202110507773.9A 2021-05-10 2021-05-10 Access or switching method, device, AMF and storage medium Pending CN115334611A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202110507773.9A CN115334611A (en) 2021-05-10 2021-05-10 Access or switching method, device, AMF and storage medium
PCT/CN2022/091928 WO2022237766A1 (en) 2021-05-10 2022-05-10 Access or handover method and apparatus, amf, and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110507773.9A CN115334611A (en) 2021-05-10 2021-05-10 Access or switching method, device, AMF and storage medium

Publications (1)

Publication Number Publication Date
CN115334611A true CN115334611A (en) 2022-11-11

Family

ID=83913074

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110507773.9A Pending CN115334611A (en) 2021-05-10 2021-05-10 Access or switching method, device, AMF and storage medium

Country Status (2)

Country Link
CN (1) CN115334611A (en)
WO (1) WO2022237766A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024160044A1 (en) * 2023-02-03 2024-08-08 Telefonaktiebolaget Lm Ericsson (Publ) Data restoration procedure for network slice admission control

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118785531A (en) * 2023-04-07 2024-10-15 中国移动通信有限公司研究院 Identification determination method, device, equipment and storage medium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108401275A (en) * 2017-02-06 2018-08-14 财团法人工业技术研究院 user equipment registration method, network controller and network communication system
WO2020066890A1 (en) * 2018-09-26 2020-04-02 Nec Corporation Network data analytics function, access and mobility function, and control method for ue analytics assistance for network automation and optimisation
CN111373792A (en) * 2017-11-19 2020-07-03 Lg电子株式会社 Handover method in wireless communication system and apparatus therefor
WO2020200597A1 (en) * 2019-04-01 2020-10-08 Ntt Docomo, Inc. Mobile communication network component and method for requesting a service
CN112335285A (en) * 2018-06-25 2021-02-05 瑞典爱立信有限公司 Network function handling in context between management function mobility

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110167082B (en) * 2018-02-14 2021-11-30 中兴通讯股份有限公司 Network switching method, device and system, and switching determination method and device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108401275A (en) * 2017-02-06 2018-08-14 财团法人工业技术研究院 user equipment registration method, network controller and network communication system
CN111373792A (en) * 2017-11-19 2020-07-03 Lg电子株式会社 Handover method in wireless communication system and apparatus therefor
CN112335285A (en) * 2018-06-25 2021-02-05 瑞典爱立信有限公司 Network function handling in context between management function mobility
US20210120462A1 (en) * 2018-06-25 2021-04-22 Telefonaktiebolaget Lm Ericsson (Publ) Network function handling in the context of inter-management function mobility
WO2020066890A1 (en) * 2018-09-26 2020-04-02 Nec Corporation Network data analytics function, access and mobility function, and control method for ue analytics assistance for network automation and optimisation
US20220039046A1 (en) * 2018-09-26 2022-02-03 Nec Corporation Network data analytics function, access and mobility function, and control method for ue analytics assistance for network automation and optimisation
WO2020200597A1 (en) * 2019-04-01 2020-10-08 Ntt Docomo, Inc. Mobile communication network component and method for requesting a service

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
""S2-181574_was0998_was0322 23502 PCF selection for AMF during inter NG-RAN node N2 based handover v2"", 3GPP TSG_SA\\WG2_ARCH, 14 February 2018 (2018-02-14) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024160044A1 (en) * 2023-02-03 2024-08-08 Telefonaktiebolaget Lm Ericsson (Publ) Data restoration procedure for network slice admission control

Also Published As

Publication number Publication date
WO2022237766A1 (en) 2022-11-17

Similar Documents

Publication Publication Date Title
KR102400285B1 (en) Communication methods, devices and systems
US20220248254A1 (en) Method of processing network slice based congestion, device and system thereof
US20230254766A1 (en) Isolated network slice selection
US11234187B2 (en) Information configuration method and management unit
WO2022237766A1 (en) Access or handover method and apparatus, amf, and storage medium
CN110519825B (en) Routing strategy processing method, device, related equipment and storage medium
EP3648525A1 (en) Network management method and system
CN109587742A (en) The method and apparatus of wireless communication
KR102040802B1 (en) Synchronization method, apparatus, and system for call supplementary service configuration
JP2018506761A (en) Implicit file generation in APDU script
CN112533177A (en) Method, device, apparatus and medium for providing and discovering moving edge calculation
JP6829308B2 (en) Session management method and session management network elements
WO2018112745A1 (en) Method, entity and system for obtaining network slice instance information
CN110913437A (en) Communication method and network element
WO2024006056A1 (en) eSIM PROFILE MANAGEMENT FOR WIRELESS DEVICES
WO2019037777A1 (en) Method and device for determining ue voice policy and storage medium
WO2021139464A1 (en) Dual-connection handover method, handover device and storage medium
US20220019380A1 (en) Methods providing network service restoration context and related service instance sets and storage resource nodes
CN114598741A (en) Switching processing method, device and communication equipment
CN112153756B (en) Data processing method and communication equipment based on tunnel establishment service
CN112291848A (en) Terminal capability configuration method and communication device
CN111543030B (en) Information indication method and device and computer storage medium
CN113329452B (en) Switching method and equipment
CN114554424B (en) Terminal group calling method and terminal equipment
US20240007847A1 (en) eSIM PROFILE MANAGEMENT FOR WIRELESS DEVICES

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination