CN109803242B - Method, apparatus and readable storage medium for NF discovery through NRF - Google Patents

Method, apparatus and readable storage medium for NF discovery through NRF Download PDF

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Publication number
CN109803242B
CN109803242B CN201711147758.8A CN201711147758A CN109803242B CN 109803242 B CN109803242 B CN 109803242B CN 201711147758 A CN201711147758 A CN 201711147758A CN 109803242 B CN109803242 B CN 109803242B
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information
nrf
label
discovery
query
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CN109803242A (en
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蒋栋栋
刘俊羿
郑芳庭
涂小勇
刘合伦
翟义强
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/60—Subscription-based services using application servers or record carriers, e.g. SIM application toolkits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support

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

Abstract

The invention introduces a method, a device and a readable storage medium for NF discovery by NRF, wherein the method comprises the following steps: receiving a query message sent by a request terminal, and searching for label information matched with the query message; and acquiring Network Function (NF) information associated with the label information, and sending the NF information to the request end. The invention can configure a general label information through NF automatic registration or NRF, and satisfy general inquiry request of NF according to the label information, thereby satisfying the aim of NF discovery through NRF.

Description

Method, apparatus and readable storage medium for NF discovery through NRF
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for NF discovery through NRF, and a readable storage medium.
Background
In a conventional mobile communication network, communication between network elements generally requires discovery of the network elements through a DNS (Domain Name System) server, and after a destination network element is discovered, a requested network element may directly communicate with the destination network element. Mobile communication has begun to develop to the fifth generation mobile communication 5G, and in a 5G system architecture, a new Network Function NRF (Network Function Repository) is introduced to perform automatic discovery of NF (Network Function). However, it is not clear how to utilize NRF for NF discovery.
Disclosure of Invention
The invention mainly aims to provide a method, equipment and a readable storage medium for NF discovery through NRF, which solve the problem of NF query through NRF in a 5G system and can improve the efficiency of NF query.
To achieve the above object, the present invention provides a method for NF discovery by NRF, the method comprising:
receiving a query message sent by a request terminal, and searching for label information matched with the query message;
and acquiring Network Function (NF) information associated with the label information, and sending the NF information to the request end.
Optionally, before receiving the query message sent by the request end, the method further includes:
receiving a registration message sent by the NF; wherein the registration message comprises: tag information for identifying the NF;
and storing the label information and establishing the association relationship between the label information and the NF.
Optionally, the query message includes: one or more query tags;
the searching for the label information matched with the query information comprises:
and respectively searching the label information matched with each inquiry label.
Optionally, the tag information includes at least one of: data network name DNN information, tracking area identification TAI information, slice information and number segment information.
Optionally, the respectively searching for the tag information matched with each query tag includes:
when the inquiry label is not the permanent user identification (SUPI) information, searching label information completely consistent with the inquiry label;
and when the query label is the SUPI information, searching the number segment information which can be matched with the SUPI information longest according to the longest matching principle.
Optionally, the NF comprises: a session management function SMF, a unified data management UDM, or a policy control function PCF.
In addition, to achieve the above object, the present invention also provides an apparatus for NF discovery by NRF, the apparatus including: a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is configured to execute a program stored in the memory for NF discovery by NRF to implement the steps of:
receiving a query message sent by a request terminal, and searching for label information matched with the query message;
and acquiring Network Function (NF) information associated with the label information, and sending the NF information to the request end.
Optionally, the processor is further configured to execute a program stored in the memory for NF discovery through NRF to implement the following steps:
before receiving a query message sent by a request end, receiving a registration message sent by an NF (network side controller); wherein the registration message comprises: tag information for identifying the NF;
and storing the label information and establishing the association relationship between the label information and the NF.
Optionally, the tag information includes at least one of: data network name DNN information, tracking area identification TAI information, slice information and number segment information.
Further, to achieve the above object, the present invention also proposes a computer-readable storage medium storing a program for NF discovery by NRF;
when executed by at least one processor, the program for NF discovery by NRF causes the at least one processor to perform the steps of the method for NF discovery by NRF as described above.
The method, the equipment and the readable storage medium for NF discovery through NRF provided by the invention solve the problem of NF query through NRF in a 5G system and can improve the efficiency of NF query. The NRF end does not need to pay attention to specific label information, and the function of completing NR query by the NRF according to different label information is realized. The invention provides a method which can configure a universal label information through NF automatic registration and NRF, and can meet the universal inquiry request of NF according to the label information, thereby meeting the aim of discovering NF through NRF.
Drawings
FIG. 1 is a flow chart of a method of NF discovery by NRF according to a first embodiment of the present invention;
FIG. 2 is a timing diagram of a method of NF discovery by NRF according to a second embodiment of the present invention;
FIG. 3 is a timing diagram of a method of NF discovery by NRF according to a third embodiment of the present invention;
FIG. 4 is a timing diagram of a method of NF discovery by NRF according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus for NF discovery by NRF according to a fifth embodiment of the present invention.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.
A first embodiment of the present invention provides a method for NF discovery through NRF, which is applied to NRF (Network functionality Function, Network Function storage) as shown in fig. 1, and specifically includes the following steps:
step S101: and receiving a query message sent by a request end, and searching for the label information matched with the query message.
Specifically, before step S101, the method further includes:
receiving a registration message sent by NF (Network Function); wherein the registration message comprises: tag information for identifying the NF;
and storing the label information and establishing the association relationship between the label information and the NF.
Preferably, the tag information includes at least one of: DNN (Data Network Name) information, TAI (Tracking Area Identity) information, slice information, number segment information.
The NRF does not need to pay attention to the specific content of the tag information, and only needs to establish the association relationship between the tag information and the NF. Label information of a plurality of NFs may be configured on the NRF.
Further, the query message includes: one or more query tags;
the searching for the label information matched with the query information comprises:
and respectively searching the label information matched with each inquiry label.
Further, when a UE (User Equipment) side or a network side triggers an event of querying the NF, the UE sends a query message to the NRF through an Access and Mobility Management Function (AMF) or a Session Management Function (SMF).
Step S102: and acquiring Network Function (NF) information associated with the label information, and sending the NF information to the request end.
Specifically, the NRF searches for tag information that matches each query tag in the query message one by one. When the inquiry label is not the permanent user identification (SUPI) information, searching label information completely consistent with the inquiry label; for example, when the query tag is DNN information, the NRF searches whether the DNN information is stored, and if so, acquires NF information associated with the DNN information. And when the query tag is the TAI information, searching whether the TAI information is stored in the NRF, and if so, acquiring the stored NF information associated with the TAI information. When the query tag is SUPI (persistent Subscriber identity) information, the number segment information that can be longest matched by the SUPI information is searched according to the longest matching rule, and NF information associated with the number segment information is acquired.
Preferably, the NF comprises: SMF, UDM (Unified Data Management), or PCF (Policy Control Management).
In this embodiment, the NF first stores the tag information for identifying itself in the NRF, so that when the request end requests to query the NF, the NRF locally searches for the matched tag information according to the query message sent by the request end, thereby obtaining the corresponding NF information.
A second embodiment of the present invention provides a method for NF discovery through NRF, as shown in fig. 2, the method specifically includes the following steps:
step S201: the SMF is powered on and sends a dynamic registration message to the NRF;
wherein the dynamic registration message comprises: tag information and slice information for identifying SMFs.
Specifically, the tag information includes: DNN information and TAI information of the SMF.
Step S202: the NRF stores the label information and the slice information of the SMF and establishes the association relationship between the label information and the slice information of the SMF and the SMF identification.
Step S203: UE sends PDU (Packet Data Unit) establishment request message to AMF; wherein the PDU setup request message includes: S-NSSAI (Single Network Slice Selection Assistant information) information and DNN information.
Step S204: the AMF sends a Slice query message to an NSSF (Network Slice Selection Function) to search for Slice information corresponding to S-NSSAI information.
Step S205: and the NSSF sends the searched slice information to the AMF.
Step S206: AMF sends query message to NRF; wherein the query message comprises: and the searched slice information, DNN information in the request message and current TAI information of the UE.
Step S207: the NRF looks up the SMF identification that matches the query message.
Specifically, step S207 includes:
the NRF looks up the SMF flag that matches the slice information in the query message, the NRF looks up the SMF flag that matches the DNN information in the query message, and the NRF looks up the SMF flag that matches the TAI information in the query message.
Step S208: and the NRF feeds back all the searched SMF identifications to the AMF.
Step S209: and the AMF selects a proper SMF from the SMF identifications fed back by the NRF to establish the PDU session.
In this embodiment, the SMF dynamically registers DNN information and TAI information for identifying itself in the NRF, so that when a subsequent PDU is connected, the AMF queries corresponding SMF information in the NRF through the DNN information and TAI information carried by the UE.
A third embodiment of the present invention provides a method for NF discovery through NRF, as shown in fig. 3, the method specifically includes the following steps:
step S301: the UDM is powered on and sends a dynamic registration message to the NRF;
wherein the dynamic registration message comprises: tag information for identifying the UDM.
Specifically, the tag information includes: number field information of the UDM.
Step S302: the NRF establishes an association relation between the tag information of the UDM and the UDM identifier, and stores the tag information of the UDM.
Step S303: UE sends register request message to AMF; wherein the registration request message includes: SUPI information.
Step S304: AMF sends query message to NRF; wherein the query message comprises: SUPI information in the registration request message.
Step S305: the NRF looks for a UDM identity that matches the query message.
Specifically, step S305 includes:
and the NRF searches the number segment information which can be longest matched with the SUPI information in the query message according to the longest matching principle, and acquires the UDM identifier associated with the number segment information.
Step S306: and the NRF feeds the searched UDM identifier back to the AMF.
Step S307: and the AMF initiates a location update to the UDM according to the UDM identifier fed back by the NRF.
In this embodiment, the UDM dynamically registers number segment information for identifying itself in the NRF, so that the AMF queries corresponding UDM information in the NRF through SUPI information carried by the UE when a subsequent user registers.
A fourth embodiment of the present invention provides a method for NF discovery through NRF, which specifically includes the following steps, as shown in fig. 4:
step S401: PCF powers on and sends dynamic registration information to NRF;
wherein the dynamic registration message comprises: label information for identifying the PCF.
Specifically, the tag information includes: number field information of the PCF.
Step S402: the NRF establishes the incidence relation between the label information of the PCF and the PCF identification, and stores the label information of the PCF.
Step S403: UE sends PDU establishment request message to AMF; wherein the PDU setup request message includes: PDU identification information.
Step S404: AMF sends context creating request message to SMF; wherein the context creation request message includes: SUPI information of the UE, requested slice information, and PDU identification information.
Step S405: SMF sends inquiry information to NRF; wherein the query message comprises: SUPI information in a context creation request message.
Step S406: the NRF looks up the PCF identification that matches the query message.
Specifically, step S406 includes:
and the NRF searches the number segment information which can be longest matched with the SUPI information in the query message according to the longest matching principle, and acquires the PCF identification associated with the number segment information.
Step S407: and the NRF feeds back the searched PCF identification to the SMF.
Step S408: and the SMF initiates a session policy creation request to the PCF according to the PCF identifier fed back by the NRF.
In this embodiment, the PCF dynamically registers the segment information for identifying itself to the NRF, so that when a subsequent user establishes a PDU, the SMF queries the corresponding PCF information in the NRF through the SUPI information carried by the UE.
A fifth embodiment of the present invention provides an apparatus for NF discovery through NRF, which is applied to network function warehousing NRF, and as shown in fig. 5, the apparatus includes: a processor 501, a memory 502, and a communication bus;
the communication bus is used for realizing connection communication between the processor 501 and the memory 502;
the processor 501 is used to execute the program stored in the memory 502 for querying NF in the 5G system to implement the following steps:
receiving a query message sent by a request terminal, and searching for label information matched with the query message;
and acquiring Network Function (NF) information associated with the label information, and sending the NF information to the request end.
Specifically, the processor 501 is further configured to execute a program stored in the memory 502 for querying NF in the 5G system, so as to implement the following steps:
before receiving a query message sent by a request end, receiving a registration message sent by an NF (network side controller); wherein the registration message comprises: tag information for identifying the NF;
and storing the label information and establishing the association relationship between the label information and the NF.
Further, the query message includes: one or more query tags;
when the processor 501 executes the step of searching for the tag information matching with the query information, the method specifically includes:
and respectively searching the label information matched with each inquiry label.
Further, the tag information includes at least one of: data network name DNN information, tracking area identification TAI information, slice information and number segment information.
Further, when the processor 501 executes the step of respectively searching for the tag information matched with each query tag, the method specifically includes:
when the inquiry label is not the permanent user identification (SUPI) information, searching label information completely consistent with the inquiry label;
and when the query label is the SUPI information, searching the number segment information which can be matched with the SUPI information longest according to the longest matching principle.
A sixth embodiment of the present invention proposes a computer-readable storage medium applied to a network function repository NRF, the computer-readable storage medium storing a program for NF discovery by the NRF;
when executed by at least one processor, the program for NF discovery through NRF causes the at least one processor to perform the steps of:
receiving a query message sent by a request terminal, and searching for label information matched with the query message;
and acquiring Network Function (NF) information associated with the label information, and sending the NF information to the request end.
The method, the equipment and the readable storage medium for NF discovery through NRF introduced in the embodiment of the invention solve the problem of NF query through NRF in a 5G system and can improve the efficiency of NF query. The NRF end does not need to pay attention to specific label information, and the function of completing NR query by the NRF according to different label information is realized. The invention provides a method which can configure a universal label information through NF automatic registration and NRF, and can meet the universal inquiry request of NF according to the label information, thereby meeting the aim of discovering NF through NRF.
While the invention has been described in connection with specific embodiments thereof, it is to be understood that it is intended by the appended drawings and description that the invention may be embodied in other specific forms without departing from the spirit or scope of the invention.

Claims (7)

1. A method for NF discovery by NRF, the method comprising:
receiving a query message sent by a request terminal, and searching for label information matched with the query message; wherein the tag information includes at least one of: the method comprises the following steps that DNN information, TAI information, slice information and number segment information of a data network are obtained;
acquiring Network Function (NF) information associated with the label information, and sending the NF information to the request end;
wherein the query message comprises: one or more query tags;
the searching for the label information matched with the query message comprises:
and respectively searching the label information matched with each inquiry label.
2. The method according to claim 1, wherein before the receiving the query message sent by the requesting end, the method further comprises:
receiving a registration message sent by the NF; wherein the registration message comprises: tag information for identifying the NF;
and storing the label information and establishing the association relationship between the label information and the NF.
3. The method of claim 1, wherein separately searching for tag information matching each query tag comprises:
when the inquiry label is not the permanent user identification (SUPI) information, searching label information completely consistent with the inquiry label;
and when the query label is the SUPI information, searching the number segment information which can be matched with the SUPI information longest according to the longest matching principle.
4. The method of claim 2, wherein the NF comprises: a session management function SMF, a unified data management UDM, or a policy control function PCF.
5. An apparatus for NF discovery by NRF, the apparatus comprising: a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is configured to execute a program stored in the memory for NF discovery by NRF to implement the steps of:
receiving a query message sent by a request terminal, and searching for label information matched with the query message; wherein the tag information includes at least one of: the method comprises the following steps that DNN information, TAI information, slice information and number segment information of a data network are obtained;
acquiring Network Function (NF) information associated with the label information, and sending the NF information to the request end;
wherein the query message comprises: one or more query tags;
the searching for the label information matched with the query message comprises:
and respectively searching the label information matched with each inquiry label.
6. The apparatus of claim 5, wherein the processor is further configured to execute a program stored in the memory for NF discovery over NRF to perform the steps of:
before receiving a query message sent by a request end, receiving a registration message sent by an NF (network side controller); wherein the registration message comprises: tag information for identifying the NF;
and storing the label information and establishing the association relationship between the label information and the NF.
7. A computer-readable storage medium characterized by storing a program for NF discovery by NRF;
the program for NF discovery by NRF, when executed by at least one processor, causes the at least one processor to perform the steps of the method for NF discovery by NRF of any of claims 1 to 4.
CN201711147758.8A 2017-11-17 2017-11-17 Method, apparatus and readable storage medium for NF discovery through NRF Active CN109803242B (en)

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