CN117793612A - Terminal access control method, AMF, communication system and storage medium - Google Patents
Terminal access control method, AMF, communication system and storage medium Download PDFInfo
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- CN117793612A CN117793612A CN202211150452.9A CN202211150452A CN117793612A CN 117793612 A CN117793612 A CN 117793612A CN 202211150452 A CN202211150452 A CN 202211150452A CN 117793612 A CN117793612 A CN 117793612A
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- 238000004891 communication Methods 0.000 title claims abstract description 14
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- 239000000284 extract Substances 0.000 claims description 4
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- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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Abstract
The disclosure provides a terminal access control method, an AMF, a communication system and a storage medium, wherein the method comprises the following steps: the AMF acquires the position information of the terminal in the process that the terminal is connected with the 3GPP network through the selected first non-3GPP network node; the AMF reselects a second non-3GPP network node based on the position information of the terminal and the information of the first non-3GPP network node and informs the terminal, so that the terminal accesses the 3GPP network through the second non-3GPP network node. According to the method and the device, the AMF is used for reselecting the new non-3GPP network node capable of meeting the service requirement and the position requirement based on the position information of the terminal, so that the terminal can access the 3GPP network through the better non-3GPP network node, the success rate of accessing the network by the terminal is improved, and the use experience of a user is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a terminal access control method, an AMF, a communications system, and a storage medium.
Background
The 3GPP (3 rd Generation Partnership Project, third Generation partnership project) network is a 3GPP framework-based network, the 3GPP network is a 3GPP framework-based communication network, and the non-3GPP network is a non-3GPP framework-based communication network. The Non-3GPP network nodes include N3IWF (Non-3 GPP Inter Working Function ), and the like. Under current 3GPP technologies, when a terminal accesses through a non-3GPP network (un-supported non-3GPP access), an N3IWF may be selected according to a location, but if the N3IWF is not appropriate (e.g., the N3IWF does not support a slice required by the UE, does not support a specific function, etc.), the UE cannot reselect the correct N3IWF.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a terminal access control method, an AMF, a communication system and a storage medium.
According to a first aspect of the present disclosure, there is provided a terminal access control method, including: the method comprises the steps that an access and mobile management function unit AMF obtains position information of a terminal in the process that the terminal is connected with a 3GPP network through a selected first non-3GPP network node; and the AMF reselects a second non-3GPP network node based on the position information of the terminal and the information of the first non-3GPP network node and informs the terminal so that the terminal accesses the 3GPP network through the second non-3GPP network node.
Optionally, the acquiring the location information of the terminal includes: the AMF receives a registration request sent by the terminal through the first non-3GPP network node, wherein the information carried by the registration request comprises: position information of the terminal; the AMF extracts location information of the terminal from the registration request.
Optionally, the location information of the terminal includes: tracking area TA information of the 3GPP access network corresponding to the position of the terminal.
Optionally, the reselecting the second non-3GPP network node and notifying the terminal includes: the AMF determines the second non-3GPP network node based on the position information of the terminal and the information of the first non-3GPP network node and according to a node selection rule; and the AMF sends the information of the second non-3GPP network node to the terminal through the first non-3GPP network node.
Optionally, the node selection rule includes: and the service requirement of the terminal and/or the distance requirement with the terminal are met.
Optionally, after receiving the information of the second non-3GPP network node, the terminal disconnects the connection with the first non-3GPP network node, and connects the second non-3GPP network node based on the information of the second non-3GPP network node, so as to access the 3GPP network.
Optionally, the information of the first non-3GPP network node and the second non-3GPP network node includes: IP address and/or full name domain name FQDN.
Optionally, the terminal sends an authorization request message to the first non-3GPP network node; wherein the registration request is carried in the authorization request message.
Optionally, the non-3GPP network node includes: a non-3GPP interworking function network element N3IWF; the 3GPP network includes: 5GC network.
According to a second aspect of the present disclosure, there is provided an AMF comprising: the information acquisition module is used for acquiring the position information of the terminal in the process that the terminal is connected with the 3GPP network through the selected first non-3GPP network node; and the node reselection module is used for reselecting a second non-3GPP network node based on the position information of the terminal and the information of the first non-3GPP network node and notifying the terminal so that the terminal accesses the 3GPP network through the second non-3GPP network node.
According to a third aspect of the present disclosure, there is provided an AMF comprising: a memory; and a processor coupled to the memory, the processor configured to perform the method as described above based on instructions stored in the memory.
According to a fourth aspect of the present disclosure, there is provided a communication system comprising: AMF as described above.
According to a fifth aspect of the present disclosure, there is provided a computer readable storage medium storing computer instructions for execution by a processor of a method as described above.
According to the terminal access control method, the AMF, the communication system and the storage medium, in the process that the terminal is connected with the 3GPP network through the selected non-3GPP network node through the AMF, the new non-3GPP network node which can meet service requirements and position requirements can be reselected based on the position information of the terminal, so that the terminal can access the 3GPP network through the better non-3GPP network node, the success rate of the terminal accessing the network is improved, and the use experience of a user is improved.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the description of the prior art, it being obvious that the drawings in the following description are only some embodiments of the present disclosure, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a flow diagram of one embodiment of a terminal access control method according to the present disclosure;
fig. 2 is a flow diagram of a reselection second non-3GPP network node in one embodiment of a terminal access control method according to the present disclosure;
fig. 3 is a signaling interaction flow diagram of one embodiment of a terminal access control method according to the present disclosure;
FIG. 4 is a block diagram of one embodiment of an AMF according to the present disclosure;
fig. 5 is a block diagram of another embodiment of an AMF according to the disclosure.
Detailed Description
The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.
The following "first", "second", etc. are used merely to describe differences and are not otherwise specifically meant.
Fig. 1 is a flow chart illustrating an embodiment of a terminal access control method according to the present disclosure, as shown in fig. 1:
step 101, the amf (Access and Mobility Management function ) obtains location information of the terminal during a process that the terminal connects to the 3GPP network through the selected first non-3GPP network node.
In one embodiment, the terminal may be a mobile phone, a tablet computer, or the like; the first non-3GPP network node includes an N3IWF or the like; the location information of the terminal includes tracking area TA (Tracking Area) information of the 3GPP access network corresponding to the location of the terminal, namely TA information of the 5G network corresponding to the location of the terminal; the 3GPP network may be a 5GC network or the like.
The AMF may obtain address information and/or domain name information corresponding to the non-3GPP network node during establishment of an NG interface connection with the non-3GPP network node, or during a radio access network configuration update with the non-3GPP network node. The AMF may acquire the location information of the terminal in various methods. For example, if the terminal selects based on location when selecting the N3IWF, the terminal transmits current location information to the AMF in a registration procedure.
The terminal may send an authorization request message to the first non-3GPP network node by using an existing method, where the authorization request message carries a registration request. The AMF receives a registration request sent by the terminal through a first non-3GPP network node, the information carried by the registration request comprises the position information of the terminal, and the AMF extracts the position information of the terminal from the registration request.
Step 102, the amf reselects the second non-3GPP network node and informs the terminal based on the location information of the terminal and the information of the first non-3GPP network node, so that the terminal accesses the 3GPP network through the second non-3GPP network node.
In one embodiment, the second non-3GPP network node includes an N3IWF or the like. The AMF can obtain the IP addresses and/or the fully qualified domain names FQDN of all available N3 IWFs in the network. The AMF acquires the current position of the terminal, and can reselect a proper new N3IWF for the terminal by combining the position information, wherein the reselected N3IWF is possibly nearest to the terminal, so that the terminal is guided to be connected to the 5GC through the new N3IWF by adopting various existing methods.
Fig. 2 is a flow diagram of a reselection of a second non-3GPP network node in one embodiment of a terminal access control method according to the present disclosure, as shown in fig. 2:
step 201, the amf determines a second non-3GPP network node based on the location information of the terminal and the information of the first non-3GPP network node and according to the node selection rule.
In one embodiment, the AMF is in a registration procedure for non-3GPP access of the terminal, if the AMF considers that the current use of the N3IWF by the terminal is unsuitable (e.g., is far away from the terminal and cannot support the services required by the terminal) and needs to reselect a new N3IWF. The node selection rules used by the AMF include rules that meet service requirements and/or distance requirements of the terminal, and the distance requirements may include requirements that are closer to the terminal.
For example, when the terminal accesses in a non-3GPP manner, the AMF can reselect a more suitable N3IWF for the terminal according to the network and the service requirement and in combination with the current location of the terminal, so as to help the terminal select a better N3IWF (for example, can satisfy the location more recently and satisfy the service requirement) through the non-3GPP access, so that the new N3IWF satisfies both the service requirement and the new N3IWF with the location more recently, so that the terminal accesses to the core network through the new N3IWF.
In step 202, the amf sends information of the second non-3GPP network node to the terminal through the first non-3GPP network node.
In one embodiment, the first non-3GPP network node information and the second non-3GPP network node information include an IP address and/or FQDN (Fully Qualified Domain Name, full name). After receiving the information of the second non-3GPP network node, the terminal disconnects the first non-3GPP network node, and connects the second non-3GPP network node based on the information of the second non-3GPP network node for accessing the 3GPP network.
Fig. 3 is a schematic signaling interaction flow diagram of one embodiment of a terminal access control method according to the present disclosure, as shown in fig. 3:
in step 301, the terminal sends an ike_auth request to the N3IWF1, and the N3IWF1 sends a registration request to the AMF. The ike_auth request carries various parameters and a registration request including TA information of the terminal in the current 3GPP network.
In one embodiment, after the terminal selects the N3IWF1 based on the location by using existing methods, the terminal carries the location information of the current terminal in the registration request sent to the AMF through the selected N3IWF1, where the location information is TA information of the current 3GPP network. For example, the terminal selects an N3IWF based on its own policy (e.g., access network discovery and selection policy ANDSP configured in the terminal), and selects the N3IWF1 closest to the terminal based on its current location. The terminal initiates a registration flow to the AMF through the N3IWF1, and the registration request is contained in an IKE_AUTH request message sent to the N3IWF1 by the terminal. The terminal carries the current location of the terminal in the registration request Registration Request, and the location of the terminal may be represented by TA information of the 3GPP network.
In step 302, the amf decides to reselect the target N3IWF and selects a new N3IWF based on TA information of the terminal's current 3GPP network.
In one embodiment, if the AMF considers that the N3IWF1 needs to be reselected (e.g., the N3IWF1 cannot support the service required by the terminal, or the N3IWF1 is far from the terminal), the AMF selects the N3IWF2 that can meet the service requirement, or is closer to the terminal, in combination with the received location information of the current terminal.
In step 303, the amf sends Registration Accept/Reject message to the terminal through the N3IWF1, and the Registration Accept/Reject message carries the identification information or IP address of the N3IWF2. The AMF sends the information (FQDN identification or IP address) of the reselected N3IWF2 to the terminal, which initiates registration with the AMF using the new N3IWF2, and registers to the 5GC through the N3IWF2.
In step 304, the terminal sends Registration Request message to the AMF through the N3IWF2. The terminal receives the information of the N3IWF2, disconnects the connection with the N3IWF1 and reconnects to the N3IWF2, and initiates a registration flow to the 5GC.
The amf sends Registration Accept a message to the terminal through the N3IWF2, step 305. The terminal completes registration at 5GC.
In one embodiment, as shown in fig. 4, the present disclosure provides an AMF40 comprising an information acquisition module 41 and a node reselection module 42. The information obtaining module 41 obtains location information of the terminal in a process that the terminal connects to the 3GPP network through the selected first non-3GPP network node. The node reselection module 42 reselects the second non-3GPP network node based on the location information of the terminal and the information of the first non-3GPP network node and informs the terminal so that the terminal accesses the 3GPP network through the second non-3GPP network node.
In one embodiment, the information obtaining module 41 receives a registration request sent by the terminal through the first non-3GPP network node, where the information carried by the registration request includes location information of the terminal. The information acquisition module 41 extracts the location information of the terminal from the registration request. The node reselection module 42 determines a second non-3GPP network node based on the location information of the terminal and the information of the first non-3GPP network node and according to the node selection rule. The node reselection module 42 sends information of the second non-3GPP network node to the terminal through the first non-3GPP network node.
Fig. 5 is a block diagram of another embodiment of an AMF according to the disclosure. As shown in fig. 5, the AMF may include a memory 51, a processor 52, a communication interface 53, and a bus 54. The memory 51 is used for storing instructions, the processor 52 is coupled to the memory 51, and the processor 52 is configured to implement the terminal access control method described above based on the instructions stored in the memory 51.
The memory 51 may be a high-speed RAM memory, a nonvolatile memory (non-volatile memory), or the like, or the memory 51 may be a memory array. The memory 51 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules. The processor 52 may be a central processing unit CPU, or an application specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the terminal access control methods of the present disclosure.
In one embodiment, the present disclosure provides a communication system comprising an AMF as in any one of the embodiments above.
In one embodiment, the present disclosure provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the terminal access control method in any of the embodiments above.
According to the terminal access control method, the AMF, the communication system and the storage medium in the embodiment, in the process that the terminal is connected with the 3GPP network through the selected non-3GPP network node through the AMF, the new non-3GPP network node which can meet service requirements and position requirements can be reselected based on the position information of the terminal, so that the terminal can access the 3GPP network through the better non-3GPP network node, the success rate of the terminal accessing the network is improved, the influence on the 3GPP standard is small, and the use experience of a user is improved.
The methods and systems of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, firmware. The above-described sequence of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the sequence specifically described above unless specifically stated otherwise. Furthermore, in some embodiments, the present disclosure may also be implemented as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (13)
1. A terminal access control method, comprising:
the method comprises the steps that an access and mobile management function unit AMF obtains position information of a terminal in the process that the terminal is connected with a 3GPP network through a selected first non-3GPP network node;
and the AMF reselects a second non-3GPP network node based on the position information of the terminal and the information of the first non-3GPP network node and informs the terminal so that the terminal accesses the 3GPP network through the second non-3GPP network node.
2. The method of claim 1, the acquiring location information of the terminal comprising:
the AMF receives a registration request sent by the terminal through the first non-3GPP network node, wherein the information carried by the registration request comprises: position information of the terminal;
the AMF extracts location information of the terminal from the registration request.
3. The method of claim 2, wherein,
the location information of the terminal includes: tracking area TA information of the 3GPP access network corresponding to the position of the terminal.
4. The method of claim 2, the reselecting the second non-3GPP network node and informing the terminal comprises:
the AMF determines the second non-3GPP network node based on the position information of the terminal and the information of the first non-3GPP network node and according to a node selection rule;
and the AMF sends the information of the second non-3GPP network node to the terminal through the first non-3GPP network node.
5. The method of claim 4, wherein,
the node selection rule includes: and the service requirement of the terminal and/or the distance requirement with the terminal are met.
6. The method of claim 4, further comprising:
and after receiving the information of the second non-3GPP network node, the terminal disconnects the connection with the first non-3GPP network node, and connects the second non-3GPP network node based on the information of the second non-3GPP network node for accessing the 3GPP network.
7. The method of claim 4, further comprising:
the information of the first non-3GPP network node and the second non-3GPP network node includes: IP address and/or full name domain name FQDN.
8. The method of claim 2, further comprising:
the terminal sends an authorization request message to the first non-3GPP network node; wherein the registration request is carried in the authorization request message.
9. The method according to any one of claim 1 to 8, wherein,
the non-3GPP network node includes: a non-3GPP interworking function network element N3IWF;
the 3GPP network includes: 5GC network.
10. An AMF, comprising:
the information acquisition module is used for acquiring the position information of the terminal in the process that the terminal is connected with the 3GPP network through the selected first non-3GPP network node;
and the node reselection module is used for reselecting a second non-3GPP network node based on the position information of the terminal and the information of the first non-3GPP network node and notifying the terminal so that the terminal accesses the 3GPP network through the second non-3GPP network node.
11. An AMF, comprising:
a memory; and a processor coupled to the memory, the processor configured to perform the method of any of claims 1-9 based on instructions stored in the memory.
12. A communication system, comprising:
the AMF of claim 10 or 11.
13. A computer readable storage medium having stored non-transitory computer instructions for execution by a processor of the method of any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211150452.9A CN117793612A (en) | 2022-09-21 | 2022-09-21 | Terminal access control method, AMF, communication system and storage medium |
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| CN202211150452.9A CN117793612A (en) | 2022-09-21 | 2022-09-21 | Terminal access control method, AMF, communication system and storage medium |
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| CN202211150452.9A Pending CN117793612A (en) | 2022-09-21 | 2022-09-21 | Terminal access control method, AMF, communication system and storage medium |
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