CN110876154A - Method, apparatus and storage medium for implementing NF nearby selection - Google Patents
Method, apparatus and storage medium for implementing NF nearby selection Download PDFInfo
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- CN110876154A CN110876154A CN201811026565.1A CN201811026565A CN110876154A CN 110876154 A CN110876154 A CN 110876154A CN 201811026565 A CN201811026565 A CN 201811026565A CN 110876154 A CN110876154 A CN 110876154A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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Abstract
The invention discloses a method, equipment and a storage medium for realizing NF (NF) nearby selection, belonging to the technical field of mobile communication. The method comprises the following steps: the service receiving NF carries the DC information of the data center where the NF is located to register to the corresponding network function storage NRF; the recipient consumer NF issues a NF discovery request to the corresponding NRF and selects a service NF for the consumer NF's proximity by DC information matching. According to the technical scheme, NF discovery can be carried out according to DC information where NF is located, the flow between DCs can be reduced while disaster recovery backup of NF is guaranteed, and interaction time delay is reduced.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method, a device, and a storage medium for implementing NF proximity selection.
Background
The service architecture is an architecture of a control plane NF (Network Function) newly introduced by 3GPP (3rd Generation Partnership Project) in a 5G system, and selection among NFs is generally implemented by NRF under the architecture. The 3GPP defines NRF _ NFDiscovery (i.e., NF discovery) service for NRF in TS (Technical Specification) 23.502 protocol to provide discovery service of NF, and the procedure of the service is as follows: a consumer NF initiates an nrrf _ NFDiscovery _ Request (i.e., an NF discovery Request) to an NRF, and the carried parameters include a destination service name, a destination NF type, a home NF type, and optionally may also carry parameters such as SUPI (user permanent Identifier), dataset Identifier, S-NSSAI (Single Network slice selection Assistance Information), NSI (Network slice Identifier), and the like; the NRF authorizes and matches based on locally stored or configured NF summary information, and when the authorization is successful and the matching is successful, the NRF provides a corresponding service NF for the consumer NF through the Nnrf _ NFdiscovery _ Request Response.
However, in an actual networking, as shown in fig. 1, in order to implement disaster recovery backup of NFs, NFs are generally required to be deployed across different data centers, which has an advantage of ensuring that when an NF of one DC exits from service due to some abnormality, the NF of the backup DC can continue to provide service for a user. Such as AMF1 (i.e., consumer NF) and AMF2 (i.e., consumer NF) group POOL, SMF1 (i.e., service NF) and SMF2 (i.e., service NF) group POOL, NRF1 and NRF2 mutual-backup group POOL in fig. 1, the NF information registered in NRF1 needs to be synchronized to NRF 2. The deployment mode of disaster recovery in different places can improve the reliability of the system, but because the existing technical scheme can not realize the near selection of NF, namely can not ensure that the nearest service NF is selected for the consumer NF, when the service NF under different DC is selected for the consumer NF, the following defects can occur: interaction across DCs, resulting in greater traffic between DCs; the inter-DC interaction increases the interaction delay and affects the user experience.
Disclosure of Invention
The embodiment of the invention mainly aims to provide a method, equipment and a storage medium for realizing NF (potential noise) nearby selection, and aims to solve the technical problem that the existing scheme cannot realize NF nearby selection.
In order to achieve the above object, an embodiment of the present invention provides a method for implementing NF proximity selection, where the method includes the following steps: the service receiving NF carries the DC information of the data center where the NF is located to register to the corresponding network function storage NRF; the recipient consumer NF issues a NF discovery request to the corresponding NRF and selects a service NF for the consumer NF's proximity by DC information matching.
In order to achieve the above object, an embodiment of the present invention further provides an apparatus for implementing NF proximity selection, where the apparatus includes a memory, a processor, a program stored in the memory and executable on the processor, and a data bus for implementing connection communication between the processor and the memory, and the program implements the steps of the foregoing method when executed by the processor.
To achieve the above object, the present invention provides a storage medium for a computer-readable storage, the storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the steps of the aforementioned method.
The method, the equipment and the storage medium for realizing NF nearby selection provided by the invention register to the corresponding network function storage NRF by receiving DC information of a data center where the service NF is carried, so that when a consumer NF sends a NF discovery request to the corresponding NRF, a service NF can be selected nearby for the consumer NF through DC information matching, thereby ensuring that the nearest service NF is selected for the consumer NF while disaster recovery backup of the NF is ensured, namely ensuring that the consumer NF and the service NF are under the same DC as far as possible, and avoiding the problems that the cross-DC interaction causes larger flow between the DCs, and the cross-DC interaction increases the interaction in different places. Therefore, the technical scheme can perform NF discovery according to the DC information of the NF, ensure the NF disaster recovery backup and reduce the flow between the DCs and the interaction time delay.
Drawings
Fig. 1 is a prior art cross-DC POOL networking diagram.
Fig. 2 is a flowchart of a method for implementing NF proximity selection according to an embodiment of the present invention.
Fig. 3 is a detailed flowchart of step S120 of the method for implementing NF proximity selection shown in fig. 2.
Fig. 4 is a further detailed flowchart of step S120 of the method of fig. 2 for implementing NF proximity selection.
Fig. 5 is an interaction diagram of "in the PDU establishing process, the NRF selects the SMF for the AMF based on the carried single DC information" in the second embodiment of the present invention.
Fig. 6 is an interaction diagram of "in the PDU establishing process, the NRF selects the SMF for the AMF based on the DC information carried in the domain FQDN information and hidden in the NRF" in the third embodiment of the present invention.
Fig. 7 is an interaction diagram of "in PDU establishing process, NRF returns matching SMF, and AMF selects SMF nearby" according to the fourth embodiment of the present invention.
Fig. 8 is a block diagram of an apparatus for implementing NF proximity selection according to a fifth embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "part", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no peculiar meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
The first embodiment.
As shown in fig. 2, an embodiment of the present invention provides a method for implementing NF nearby selection, where the method includes the following steps:
step S110: and the service receiving NF carries the DC information of the data center where the NF is located to register with the corresponding network function storage NRF.
In particular, to implement disaster recovery backup of NFs, NFs are typically deployed across different data centers, which has the advantage of ensuring that when an NF of one DC is out of service due to some anomaly, the NF of the backup DC can continue to provide service for the user. Before this step, the following steps are also executed: and networking the service NF under two different DCs through the POOL POOL, so that the two service NF are in backup relation with each other. The NRFs under two different DCs are networked through a POOL POOL, so that the two NRFs are in a backup relationship with each other, and the NF summary information stored in each NRF is synchronized to the other NRF through an UDSF (Unstructured Data Storage Function).
Such as AMF1 (i.e., consumer NF) and AMF2 (i.e., consumer NF) group POOL, SMF1 (i.e., service NF) and SMF2 (i.e., service NF) group POOL, NRF1 and NRF2 mutual-backup group POOL in fig. 1, the NF information registered in NRF1 needs to be synchronized to NRF 2.
When the service NF carries the DC information of the data center where the service NF is located to register to a corresponding NRF (Network function repository), the service NF also carries NF summary information, where the NF summary information includes any combination of a destination service name, a destination NF type, a home NF type, a user permanent identifier SUPI, a data set identifier, single Network slice selection auxiliary information S-NSSAI, and a Network slice instance identifier NSI.
The DC information registered by the service NF to the corresponding NRF may be a separate field of the NF summary information, or may be a part of FQDN (Domain Name) information of the service NF. Namely, the specific execution process of the step is that the service receiving NF carries the DC information of the data center where the service receiving NF is located to register to the corresponding network function storage NRF through the single field of the NF summary information, or the service receiving NF carries the DC information of the data center where the service receiving NF is located, which is extracted through the domain name FQDN information, to register to the corresponding network function storage NRF.
Step S120: the recipient consumer NF issues a NF discovery request to the corresponding NRF and selects a service NF for the consumer NF's proximity by DC information matching.
Specifically, when NF discovery is performed, a consumer NF carries own DC information in an nrrf _ NFDiscovery _ Request (i.e., an NF discovery Request), the NRF preferentially selects a server NF under the same DC for the consumer NF according to current DC information provided by the consumer NF, the consumer NF may not provide own DC information, and when the NRF returns NF information satisfying a condition, the consumer NF performs secondary matching and selects the server NF that is in the same DC as the NRF.
Thus, the specific implementation process of this step may be as shown in fig. 3, and includes:
step S121A: and receiving the DC information carried by the consumer NF and sending a NF discovery request to a corresponding NRF.
Step S122A: DC information matching by the NRF selects a service NF for the consumer NF's neighborhood.
As shown in fig. 4, the method may further include:
step S121B: receiving a NF discovery request sent by a consumer NF to a corresponding NRF according to the requirement,
step S122B: and returning a service NF information set meeting the requirement through the NRF, and performing DC information matching on the service NF information set through the consumer NF to select a service NF nearby for the consumer NF.
By the method disclosed by the embodiment of the invention, the advantages of the POOL networking are continuously maintained, and when the NF in the DC1 fails, the NF in the standby DC2 can continuously provide service. On the other hand, the NF service providing service of the same DC is ensured to be selected through the NRF, so that the flow across the DC can be reduced, and the interaction time delay among the NF is reduced.
Example two
As shown in fig. 5, the embodiment of the present invention discloses an example of NRF selecting SMF for AMF based on carried single DC information in a packet data unit PDU establishing process, and the specific process is as follows:
node 101-102: the SMFs 1 and 2 are cross-DC mutual backup services (NF), and automatically and respectively register to NRFs under respective configured data centers DC when the NF is powered on, and the NF summary information requested by the Nnrf _ NFmanagement _ NFRegister carries independent DC information. The DC information is generally planned by operation in a unified way, and generally can carry administrative region information, for example, JS.NJ and JS.WX respectively represent the numbers of two DCs of Jiangsu moving in Nanjing and without tin respectively; DC information registered with the NRF by two SMFs such as Nanjing and tin-free, respectively, may be nj.js and wx.js.
The node 103: and after receiving the registration information of the SMF, the NRF stores the registered NF Profile into a local database, and synchronizes the NF Profile information stored by the NRF to the opposite party through an unstructured data storage function UDSF according to the configured mutual backup relationship between the NRF1 and the NRF 2.
Node 104-106: a UE (User equipment) triggers a registration and PDU establishment process, wherein in the PDU establishment process, an AMF1 inquires an SMF from an NRF1, and the inquired SMF carries DC information nj.js where the AMF1 is located; and after the authorization of the NRF1 is successful, matching the SMF with the DC information nj.js of the requested AMF according to the NF type of the query, and finally returning the address and FQDN information of the SMF1 to the AMF after matching the DC information nj.js of the SMF 1.
The node 107: the AMF1 initiates an Nsmf _ pduse _ CreateSMContext (i.e. PDU establishment) flow to the SMF1 according to the information of SMF1 returned by NRF 1.
EXAMPLE III
As shown in fig. 6, the embodiment of the present invention discloses an example of NRF selecting SMF for AMF based on DC information carried in domain FQDN information in a packet data unit PDU establishing process, and the specific process is as follows:
node 201-202: the SMFs 1 and 2 are cross-DC mutual-backup NFs, automatically and respectively register to NRFs under the configured respective DCs when the power is on, and the FQDN in the NF Profile requested by the Nnrf _ NFmanagement _ NFRegister carries the information of the located DCs. The DC information is generally planned by the operator in a unified manner, and generally can carry administrative region information, such as js.nj and js.wx which respectively represent numbers of two DCs with Jiangsu moving in Nanjing and without tin. FQDNs of two SMFs, such as nanjing and tin-free, respectively registered with the NRF may be nj.js.smf.5g.3gppneworks.org and wx.js.smf.5g.3gppneworks.org.
The node 203: the NRF stores the registered NF summary information into a local database after receiving the registration information of the SMF, and synchronizes the respective stored NF summary information to the opposite side through the UDSF according to the configured mutual backup relationship between the NRF1 and the NRF 2.
Node 204-206: UE triggers registration and PDU establishment procedures, wherein in the PDU establishment procedure, AMF1 inquires SMF from NRF1, and the DC carrying AMF1 is nj.js; and after the authorization of the NRF1 is successful, matching the DC information nj.js of the SMF and the requested AMF according to the inquired target NF type and the FQDN information stored in the database, and finally returning the address and the FQDN information of the SMF1 to the AMF after matching the DC information nj.js of the SMF and the requested AMF to the SMF 1.
Node 207: the AMF1 initiates an Nsmf _ pduse _ CreateSMContext (i.e. PDU establishment) flow to the SMF1 according to the information of the SMF1 returned by the NRF.
Example four
As shown in fig. 7, the embodiment of the present invention discloses an example of "NRF returns matching SMF and AMF selects SMF nearby" in the packet data unit PDU establishing process, which includes the following specific processes:
s301-302: the SMFs 1 and 2 are cross-DC mutual-backup NFs, automatically and respectively register to NRFs under the configured respective DCs when the power is on, and the FQDN in the NF Profile requested by the Nnrf _ NFmanagement _ NFRegister carries the information of the located DCs. The DC information is generally planned by the operator in a unified manner, and generally can carry administrative region information, such as js.nj and js.wx which respectively represent numbers of two DCs with Jiangsu moving in Nanjing and without tin. FQDNs of two SMFs, such as nanjing and tin-free, respectively registered with the NRF may be nj.js.smf.5g.3gppneworks.org and wx.js.smf.5g.3gppneworks.org.
S303: the NRF stores the registered NF summary information into a local database after receiving the registration information of the SMF, and synchronizes the respective stored NF summary information to the opposite side through the UDSF according to the configured mutual backup relationship between the NRF1 and the NRF 2.
S304-306: UE triggers registration and PDU establishment flow, wherein AMF1 in the PDU establishment flow inquires SMF from NRF1, and the inquired SMF carries a target NF type; and after the authorization of the NRF1 is successful, returning all addresses and FQDN information of the matched SMFs for the SMFs according to the inquired target NF types.
S307-308: the AMF1 further selects according to all SMF information returned by the NRF1, matches with the FQDN of each SMF according to the DC information nj.js where the SMF is located, and finally matches to the SMF 1; the AMF1 initiates an Nsmf _ pdusesion _ CreateSMContext (i.e., PDU establishment) flow to the SMF 1.
Remarking: the near selection of NF by NRF can be applied but not limited by AMF discovery selection SMF, and the discovery and selection among the rest NF can use the method.
EXAMPLE five
As shown in fig. 8, a seventh embodiment of the present invention proposes an apparatus 20 for implementing NF proximity selection, where the apparatus 20 includes a memory 21, a processor 22, a program stored in the memory and executable on the processor, and a data bus 23 for implementing connection communication between the processor 21 and the memory 22, and the program is executed by the processor 21 to implement the steps of the method for implementing NF proximity selection.
It should be noted that the embodiment of the apparatus 20 and the embodiment of the method for implementing NF nearby selection in the embodiment of the present invention belong to the same concept, and specific implementation processes thereof are detailed in the first method embodiment, and technical features in the first method embodiment are correspondingly applicable to the embodiment of the apparatus 20 for implementing NF nearby selection, which is not described herein again.
EXAMPLE six
An eighth embodiment of the present invention provides a computer-readable storage medium, where one or more programs are stored, and the one or more programs are executable by one or more processors to implement the specific steps of the method for implementing NF nearby selection in the first embodiment.
It should be noted that the above computer-readable storage medium and the method embodiment belong to the same concept, and specific implementation processes thereof are detailed in the first method embodiment, and technical features in the first method embodiment are correspondingly applicable to the computer-readable storage medium embodiment, which is not described herein again.
The method, the equipment and the storage medium for realizing NF nearby selection provided by the embodiment of the invention register to the corresponding network function storage NRF by receiving the DC information of the data center where the service NF carries, so that a NF discovery request is sent to the corresponding NRF when the DC information of the customer NF carries, and a service NF is nearby selected for the customer NF through DC information matching, thereby ensuring that the nearest service NF is selected for the customer NF while disaster recovery and backup of the NF are ensured, namely ensuring that the customer NF and the service NF are under the same DC as far as possible, and avoiding the problems of larger flow between the DCs caused by cross-DC interaction and interaction delay increase of interaction in cross-DC interaction at different places. Therefore, the technical scheme can perform NF discovery according to the DC information of the NF, ensure the NF disaster recovery backup and reduce the flow between the DCs and the interaction time delay.
One of ordinary skill in the art will appreciate that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, 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. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, 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 accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, 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 those skilled in the art.
The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and are not to be construed as limiting the scope of the invention. Any modifications, equivalents and improvements which may occur to those skilled in the art without departing from the scope and spirit of the present invention are intended to be within the scope of the claims.
Claims (10)
1. A method of enabling near selection of a network function NF, the method comprising:
the service receiving NF carries the DC information of the data center where the NF is located to register to the corresponding network function storage NRF;
the recipient consumer NF issues a NF discovery request to the corresponding NRF and selects a service NF for the consumer NF's proximity by DC information matching.
2. The method of claim 1, wherein the step of registering the served NF with the corresponding data center DC information in the NRF further comprises:
and networking the service NF under two different DCs through a POOL POOL, so that the two service NF are in a backup relationship with each other.
3. The method of claim 1, wherein the step of registering the served NF with the corresponding data center DC information in the NRF further comprises:
and networking the NRFs under two different DCs through a POOL POOL, so that the two NRFs are in a backup relationship with each other, and synchronizing the NF summary information stored in the NRFs to each other through an unstructured data storage function UDSF.
4. The method as claimed in claim 1, wherein the service NF carries DC information of a data center where the service NF is located, and when registering with a corresponding NRF, the service NF also carries NF summary information, and the NF summary information includes any combination of a destination service name, a destination NF type, a home NF type, a user permanent identifier SUPI, a data set identifier, single network slice selection auxiliary information S-NSSAI, and a network slice instance identifier NSI.
5. The method of claim 1, wherein the step of registering the served NF carrying the DC information of the data center with the corresponding NRF specifically comprises:
the NF to be served registers with the corresponding NRF, which is a repository of network functions, through a separate field of the NF profile information carrying the DC information of the data center in which the NF resides.
6. The method of claim 1, wherein the step of registering the served NF carrying the DC information of the data center with the corresponding NRF specifically comprises:
and the service receiving NF carries the DC information of the data center extracted by the domain name FQDN information and registers the DC information to the corresponding network function storage NRF.
7. The method of claim 1 wherein said step of accepting a consumer NF to issue a NF discovery request to a corresponding NRF and selecting a serving NF for said consumer NF proximately by DC information matching comprises:
accepting the DC information that the consumer NF carries with it issues a NF discovery request to the corresponding NRF,
DC information matching by the NRF selects a service NF for the consumer NF in proximity.
8. The method of claim 1 wherein said step of accepting a consumer NF to issue a NF discovery request to a corresponding NRF and selecting a serving NF for said consumer NF proximately by DC information matching comprises:
receiving a NF discovery request sent by a consumer NF to a corresponding NRF according to the requirement,
and returning a service NF information set meeting the requirement through the NRF, and performing DC information matching on the service NF information set through the consumer NF to select one service NF nearby for the consumer NF.
9. An apparatus for implementing NF proximity selection, the apparatus comprising a memory, a processor, a program stored on the memory and executable on the processor, the program when executed by the processor implementing the steps of the method of implementing NF proximity selection as claimed in any of claims 1-8, and a data bus for implementing communications between the processor and the memory.
10. A storage medium for computer readable storage, wherein the storage medium stores one or more programs executable by one or more processors to perform the steps of a method of implementing NF proximity selection as claimed in any one of claims 1 to 8.
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| CN112367666A (en) * | 2020-11-05 | 2021-02-12 | 广州爱浦路网络技术有限公司 | Method, device and system for allowing pNF in 5G core network to pass NRF authentication cNF |
| CN115209522A (en) * | 2021-04-06 | 2022-10-18 | Oppo广东移动通信有限公司 | Network function registration method, discovery method, device, equipment and medium |
| CN115209522B (en) * | 2021-04-06 | 2024-03-08 | Oppo广东移动通信有限公司 | Network function registration method, discovery method, device, equipment and medium |
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