CN117528482A - Session binding information acquisition method, system and storage medium - Google Patents

Session binding information acquisition method, system and storage medium Download PDF

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Publication number
CN117528482A
CN117528482A CN202210897380.8A CN202210897380A CN117528482A CN 117528482 A CN117528482 A CN 117528482A CN 202210897380 A CN202210897380 A CN 202210897380A CN 117528482 A CN117528482 A CN 117528482A
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China
Prior art keywords
bsf
target
information
mac address
request message
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Inventor
孙悦
刘玉冰
陈卓怡
刘海
龙彪
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Priority to CN202210897380.8A priority Critical patent/CN117528482A/en
Publication of CN117528482A publication Critical patent/CN117528482A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/14—Mobility data transfer between corresponding nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber 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)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present disclosure provides a session binding information obtaining method, a system and a storage medium, wherein the method includes: the first BSF receives a first discovery request message including the MAC address of the target UE; the first BSF acquires second BSF information bound with the session of the target UE according to the MAC address and returns the second BSF information; the second BSF receives a second discovery request message including the MAC address of the target UE; and the second BSF acquires PCF information bound with the session of the target UE according to the MAC address and returns the PCF information. The method and the device are used for summarizing session binding information to a first BSF aiming at a hierarchical architecture deployed by a plurality of BSFs, acquiring second BSF information through the first BSF and initiating a discovery request to the second BSF, so that the problem that PCF (physical function) for inquiring session binding to each BSF needs to be carried with a UE (user equipment) MAC (media access control) address for an Ethernet type session is solved, the inquiring efficiency is improved, and signaling transmission is reduced.

Description

Session binding information acquisition method, system and storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a session binding information obtaining method, a session binding information obtaining system, and a storage medium.
Background
For the scenario of distributed BSF (Binding Support Function ) deployment, AF (Application Function, application function) or NEF (Network Exposure Function, network open function) needs to look up PCF (Policy Control Function ) information serving an ethernet session through NRF (Network Repository Function, network storage function) according to UE MAC address. However, since the MAC address cannot bind the PCF to different BSFs by distinguishing ranges as the IP address, the AF or NEF needs to send a lookup request to each BSF, which is inefficient and increases signaling consumption.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a session binding information acquiring method, system and storage medium.
According to a first aspect of the present disclosure, there is provided a session binding information acquisition method, including: the first BSF receives a first discovery request message; the information carried by the first discovery request message includes: the MAC address of the target UE; the first BSF acquires second BSF information bound with the session of the target UE according to the MAC address of the target UE and returns the second BSF information; the second BSF receives a second discovery request message; the information carried by the second discovery request message includes: the MAC address of the target UE; and the second BSF acquires PCF information bound with the session of the target UE according to the MAC address of the target UE and returns the PCF information.
Optionally, the second BSF receives a first registration request message; the information carried in the first registration request message includes: the MAC address of the target UE and the PCF information; the second BSF establishes and stores a first corresponding relation between the MAC address of the target UE and the PCF information; the second BSF sends a second registration request message to the first BSF, wherein the information carried in the second registration request message comprises: the MAC address of the target UE and the second BSF information; and the first BSF establishes and stores a second corresponding relation between the MAC address of the target UE and the second BSF information.
Optionally, the first BSF obtaining, according to the MAC address of the target UE, second BSF information bound to the session of the target UE includes: the first BSF acquires second BSF information corresponding to the MAC address of the target UE in the second corresponding relation as second BSF information bound with the session of the target UE; the second BSF obtaining PCF information bound to a session of the target UE according to the MAC address of the target UE includes: and the second BSF acquires PCF information corresponding to the MAC address of the target UE in the first corresponding relation and uses the PCF information as PCF information bound with the session of the target UE.
Optionally, the PCF sends the first registration request message to the second BSF after receiving the ethernet type PDU session establishment request initiated by the target UE.
Optionally, the NRF receives a search request message sent by an AF or a NEF, and returns first BSF information to the AF or the NEF; the information carried in the search request message includes: the MAC address of the target UE; the AF or the NEF sends the first discovery request message to the first BSF; the AF or the NEF receives the second BSF information returned by the first BSF.
Optionally, the AF or the NEF sends the second discovery request message to the second BSF; and the AF or the NEF receives PCF information which is returned by the second BSF and is bound with the session of the target UE.
Optionally, the second BSF receives a subscription request for a MAC address change of the target UE; and the second BSF transmits the MAC address change information of the target UE when the MAC address of the target UE is changed.
Optionally, the AF or NEF sends the subscription request to the second BSF, and receives MAC address change information of the target UE sent by the second BSF.
According to a first aspect of the present disclosure, there is provided a session binding information acquisition system including: a first BSF for receiving a first discovery request message; the information carried by the first discovery request message includes: the MAC address of the target UE; acquiring second BSF information bound with the session of the target UE according to the MAC address of the target UE and returning the second BSF information; the second BSF is configured to receive a second discovery request message; the information carried by the second discovery request message includes: the MAC address of the target UE; and acquiring PCF information bound with the session of the target UE according to the MAC address of the target UE and returning.
Optionally, the second BSF is configured to receive a first registration request message, where information carried in the first registration request message includes: the MAC address of the target UE and the PCF information; establishing and storing a first corresponding relation between the MAC address of the target UE and the PCF information; sending a second registration request message to the first BSF, where information carried in the second registration request message includes: the MAC address of the target UE and the second BSF information; and the first BSF is used for establishing and storing a second corresponding relation between the MAC address of the target UE and the second BSF information.
Optionally, the first BSF is configured to obtain, in the second correspondence, second BSF information corresponding to the MAC address of the target UE, as second BSF information bound to the session of the target UE; the second BSF is configured to obtain PCF information corresponding to the MAC address of the target UE in the first correspondence, as PCF information bound to a session of the target UE.
Optionally, the system comprises: PCF; the PCF is configured to send the first registration request message to the second BSF after receiving an ethernet type PDU session establishment request initiated by the target UE.
Optionally, the system comprises: NRF, AF or NEF; the NRF is configured to receive a search request message sent by the AF or the NEF, and return first BSF information to the AF or the NEF, where information carried in the search request message includes: the MAC address of the target UE; the AF or the NEF is used for sending the first discovery request message to the first BSF and receiving the second BSF information returned by the first BSF.
Optionally, the AF or the NEF sends the second discovery request message to the second BSF; and the AF or the NEF receives PCF information which is returned by the second BSF and is bound with the session of the target UE.
Optionally, the second BSF is further configured to receive a subscription request for a MAC address change of the target UE; and when the MAC address of the target UE changes, sending the MAC address change information of the target UE.
Optionally, the AF or NEF sends the subscription request to the second BSF, and receives MAC address change information of the target UE sent by the second BSF.
According to a third 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 session binding information acquisition method, system and storage medium, session binding information is summarized to a first BSF aiming at a hierarchical architecture deployed by a plurality of BSFs, second BSF information which is bound with PDU (protocol data unit) session of target UE (user equipment) is acquired through the first BSF, and a discovery request is initiated to the second BSF, so that the problem that PCF information which is bound with the session needs to be inquired to each BSF by carrying a UE MAC (media access control) address for Ethernet type session is solved, inquiry efficiency is improved, signaling transmission is reduced, and user experience 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 session binding information acquisition method according to the present disclosure;
fig. 2 is a flowchart illustrating a registration of a BSF in one embodiment of a session binding information acquisition method according to the present disclosure;
fig. 3 is a signaling interaction diagram of BSF registration in an embodiment of a session binding information acquisition method according to the present disclosure;
FIG. 4 is a signaling interaction diagram of one embodiment of a session binding information acquisition method according to the present disclosure;
FIG. 5 is a block diagram of one embodiment of a session binding information acquisition system according to the present disclosure;
fig. 6 is a block diagram of another embodiment of a session binding information acquisition system according to the present 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.
In the related art known to the inventors, in the existing 3GPP specifications, when BSFs are distributed, there are multiple BSFs, and for a PDU session of IP type, AF searches for a corresponding BSF according to a UE IP address range, each BSF is responsible for a different IP range (IP range), and when BSFs register with NRFs, the BSFs carry the responsible UE IP address range. However, for an ethernet type PDU session, i.e. the UE address is of the MAC address type, the MAC address cannot look up the BSF by partitioning the range as the IP address. If the AF needs to find the BSF according to the MAC address, a find request needs to be sent to each BSF every time, resulting in low find efficiency and increased signaling in the network.
Fig. 1 is a flow diagram of one embodiment of a session binding information acquisition method according to the present disclosure, as shown in fig. 1:
step 101, a first BSF receives a first discovery request message; the information carried by the first discovery request message includes the MAC address of the target UE, etc.
Step 102, the first BSF obtains second BSF information bound to the session of the target UE according to the MAC address of the target UE and returns the second BSF information. The second BSF information includes information of an identification, an address, etc. of the second BSF. The first BSF may be a higher layer BSF and the second BSF may be a lower layer BSF.
Step 103, the second BSF receives the second discovery request message; the information carried by the second discovery request message includes the MAC address of the target UE, etc.
Step 104, the second BSF obtains PCF information bound with the session of the target UE according to the MAC address of the target UE and returns. The PCF information includes information such as the identification, address, etc. of the PCF.
Fig. 2 is a flowchart illustrating registration of a BSF in an embodiment of a session binding information acquisition method according to the present disclosure, as shown in fig. 2:
step 201, the second BSF receives a first registration request message; the information carried in the first registration request message includes the MAC address, PCF information, and the like of the target UE.
In one embodiment, the PCF sends a first registration request message to the second BSF after receiving an ethernet type PDU session establishment request initiated by the target UE.
In step 202, the second BSF establishes and stores a first correspondence between the MAC address of the target UE and PCF information.
In step 203, the second BSF sends a second registration request message to the first BSF, where the information carried in the second registration request message includes the MAC address of the target UE, the second BSF information, and so on.
In step 204, the first BSF establishes and stores a second correspondence between the MAC address of the target UE and the second BSF information.
In one embodiment, the NRF receives a search request message sent by the AF or the NEF, and returns first BSF information to the AF or the NEF, where the information carried in the search request message includes the MAC address of the target UE, etc., and the first BSF information includes information such as an identifier and an address of the first BSF, and the NRF may acquire the first BSF information by using an existing method. The AF or NEF sends a first discovery request message to the first BSF and receives second BSF information returned by the first BSF. The AF or NEF sends a second discovery request message to the second BSF, and receives PCF information which is returned by the second BSF and is bound with the session of the target UE. The AF or NEF may use existing methods to perform corresponding processing based on PCF information.
The first BSF acquires second BSF information corresponding to the MAC address of the target UE in the second corresponding relation as second BSF information bound with the session of the target UE. The second BSF acquires PCF information corresponding to the MAC address of the target UE in the first corresponding relation and takes the PCF information as PCF information bound with the session of the target UE.
In one embodiment, the second BSF receives a subscription request for a MAC address change of the target UE, and when the MAC address of the target UE changes, the second BSF transmits MAC address change information of the target UE, the MAC address change information including a corresponding new MAC address, and the like. For example, the AF or NEF sends a subscription request to the second BSF, and receives MAC address change information of the target UE sent by the second BSF.
Fig. 3 is a signaling interaction diagram for BSF registration in an embodiment of a session binding information acquisition method according to the present disclosure, as shown in fig. 3:
in step 301, the ue initiates an ethernet type PDU session establishment request. The request may be established in accordance with an existing procedure.
Step 302, the pcf sends a nbsf_management_register request message to the second BSF. The registration can be performed in the second BSF according to the existing procedure by using the nbsf_management_register request to carry information such as the UE MAC address, PCF instance ID, etc.
In step 303, the second BSF returns nbsf_management_ Register response to the PCF, confirming that the registration was successful.
In step 304, the second BSF sends an nbsf_management_register request message to the first BSF. The UE MAC address and related binding information are sent to the first BSF through the nbsf_management_register request message, where the stored registration information includes the UE MAC address, the second BSF information, and the like, and may also include PCF information, and the like.
In step 305, the first BSF sends a nbsf_management_ Register response message to the second BSF to confirm that the registration was successful.
Fig. 4 is a signaling interaction diagram of one embodiment of a session binding information acquisition method according to the present disclosure, as shown in fig. 4:
in step 401, the af or NEF sends an nrf_nfdiscovery_request message to the NRF, where information carried by the nrf_nfdiscovery_request message includes information such as MAC address of the target UE.
In step 402, the nrf performs an authorized service discovery process according to an existing method.
In step 403, the nrf returns an nrf_nfdiscovery_request Response message to the AF or the NEF, where the information carried in the nrf_nfdiscovery_request Response message includes the first BSF information and so on.
In step 404, the AF or NEF sends a Nbsf_management_ Discovery request message to the first BSF. The discovery request is initiated to the first BSF by the nbsf_management_ Discovery request message carrying the MAC address of the target UE.
In step 405, the first BSF sends a nbsf_management_ Discovery response message to the AF or NEF. The first BSF returns second BSF information bound with the PDU session of the UE to the AF or NEF through a Nbsf_management_ Discovery response message according to the MAC address of the target UE provided by the AF or NEF.
In step 406, the AF or NEF sends a Nbsf_management_ Discovery request message to the second BSF. The AF or NEF initiates a PCF discovery request to the second BSF by sending a nbsf_management_ Discovery request message carrying information such as the MAC address of the target UE.
In step 407, the second BSF sends a nbsf_management_ Discovery response message to the AF or NEF. The second BSF returns PCF information for the PDU session binding to the AF or NEF by sending a nbsf_management_ Discovery response message carrying PCF information for the PDU session binding.
In step 408, the AF or NEF sends a Nbsf_management_ Subscribe request message to the second BSF. The AF or NEF subscribes to the UE MAC address change information of a certain PDU session by sending a nbsf_management_ Subscribe request message.
In step 409, the second BSF transmits nbsf_management_notify response to the AF or NEF. When the MAC address of the UE changes, the second BSF may notify the AF or the NEFMAC address that the change has occurred through an existing notification procedure.
In one embodiment, for a MAC address type user, there may be a case where one UE1 is connected to a plurality of UEs at a later time, but all data forwarding is performed on one PDU session established by the UE 1. Under the condition that the session established by the UE1 is unchanged, the UE connected to the back of the UE1 has new addition or handover, the AF or NEF may subscribe to the UE MAC address change event, and when the MAC address of the back of the UE1 changes, the AF/NEF may be notified through the second BSF, so that the number of queries of the AF or NEF may be reduced, that is, the repeated execution of steps 401-407 is avoided.
According to the session binding information acquisition method, aiming at a hierarchical architecture deployed by BSF, all binding information is summarized to a first BSF (high-level BSF), and AF or NEF firstly acquires second BSF (low-level BSF) information bound with PDU session of target UE from the first BSF; the AF or NEF initiates a discovery request to the second BSF and subscribes to the UE MAC address change information, so as to solve the problem that the AF or NEF needs to carry the UE MAC address for the Ethernet type session to inquire the PCF bound with the session to each BSF, thereby improving the inquiry efficiency and reducing the signaling transmission.
In one embodiment, as shown in fig. 5, the present disclosure provides a session binding information acquisition system including a first BSF501 and a second BSF 502. The first BSF501 receives a first discovery request message, where information carried in the first discovery request message includes a MAC address of the target UE, and so on. The first BSF501 acquires second BSF information of session binding with the target UE according to the MAC address of the target UE and returns. The second BSF502 receives a second discovery request message, where information carried by the second discovery request message includes a MAC address of the target UE, and so on; the second BSF502 obtains PCF information bound to the session of the target UE according to the MAC address of the target UE and returns.
In one embodiment, the second BSF502 receives a first registration request message, where the information carried in the first registration request message includes the MAC address of the target UE, PCF information, and the like. The second BSF502 establishes and stores a first correspondence between the MAC address of the target UE and PCF information. The second BSF502 sends a second registration request message to the first BSF501, where the information carried in the second registration request message includes the MAC address of the target UE, second BSF information, and so on. The first BSF501 establishes and stores a second correspondence between the MAC address of the target UE and the second BSF information.
The first BSF501 acquires second BSF information corresponding to the MAC address of the target UE in the second correspondence relationship as second BSF information of session binding with the target UE. The second BSF502 acquires PCF information corresponding to the MAC address of the target UE in the first correspondence relationship as PCF information bound to the session of the target UE.
In one embodiment, as shown in fig. 6, the session binding information acquisition system includes a PCF 503, and the PCF 503 sends a first registration request message to a second BSF after receiving an ethernet type PDU session establishment request initiated by a target UE.
The session binding information acquisition system includes NRF 504, AF 505, or NEF 506. The NRF 504 receives the search request message sent by the AF 505 or the NEF506, and returns first BSF information, where the information carried in the search request message includes the MAC address of the target UE, and so on. The AF 505 or the NEF506 sends a first discovery request message to the first BSF501, and receives second BSF information returned by the first BSF. The AF 505 or the NEF506 sends a second discovery request message to the second BSF502, and the AF 505 or the NEF506 receives PCF information of session binding with the target UE returned by the second BSF 506.
The second BSF502 receives a subscription request for a MAC address change of the target UE, and transmits MAC address change information of the target UE when the MAC address of the target UE changes. For example, the AF 505 or the NEF506 sends a subscription request to the second BSF502, and receives MAC address change information of the target UE sent by the second BSF 502.
In one embodiment, the present disclosure provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the session binding information acquisition method of any of the embodiments above.
According to the session binding information acquisition method, the session binding information acquisition system and the storage medium, aiming at the hierarchical architecture deployed by a plurality of BSFs, all binding information is summarized to the first BSF, AF or NEF acquires second BSF information bound with PDU sessions of target UE through the first BSF, and initiates a discovery request and subscribing UE MAC address change information to the second BSF, so that the problem that AF or NEF needs to carry UE MAC addresses for Ethernet type sessions to inquire PCFs bound with the sessions to each BSF is solved, inquiring efficiency is improved, signaling transmission is reduced, and user experience 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 (17)

1. A session binding information acquisition method includes:
the first BSF receives a first discovery request message; the information carried by the first discovery request message includes: the MAC address of the target UE;
the first BSF acquires second BSF information bound with the session of the target UE according to the MAC address of the target UE and returns the second BSF information;
the second BSF receives a second discovery request message; the information carried by the second discovery request message includes: the MAC address of the target UE;
and the second BSF acquires PCF information bound with the session of the target UE according to the MAC address of the target UE and returns the PCF information.
2. The method of claim 1, comprising:
the second BSF receives a first registration request message; the information carried in the first registration request message includes: the MAC address of the target UE and the PCF information;
the second BSF establishes and stores a first corresponding relation between the MAC address of the target UE and the PCF information;
the second BSF sends a second registration request message to the first BSF, wherein the information carried in the second registration request message comprises: the MAC address of the target UE and the second BSF information;
and the first BSF establishes and stores a second corresponding relation between the MAC address of the target UE and the second BSF information.
3. The method of claim 2, the first BSF obtaining second BSF information for session binding with the target UE based on the MAC address of the target UE comprising:
the first BSF acquires second BSF information corresponding to the MAC address of the target UE in the second corresponding relation as second BSF information bound with the session of the target UE;
the second BSF obtaining PCF information bound to a session of the target UE according to the MAC address of the target UE includes:
and the second BSF acquires PCF information corresponding to the MAC address of the target UE in the first corresponding relation and uses the PCF information as PCF information bound with the session of the target UE.
4. The method of claim 2, further comprising:
the PCF sends the first registration request message to the second BSF after receiving an Ethernet type PDU session establishment request initiated by the target UE.
5. The method of claim 1, comprising:
the NRF receives a search request message sent by AF or NEF and returns first BSF information to the AF or NEF; the information carried in the search request message includes: the MAC address of the target UE;
the AF or the NEF sends the first discovery request message to the first BSF;
the AF or the NEF receives the second BSF information returned by the first BSF.
6. The method of claim 5, comprising:
the AF or the NEF sends the second discovery request message to the second BSF;
and the AF or the NEF receives PCF information which is returned by the second BSF and is bound with the session of the target UE.
7. The method of claim 1, comprising:
the second BSF receives a subscription request for the MAC address change of the target UE;
and the second BSF transmits the MAC address change information of the target UE when the MAC address of the target UE is changed.
8. The method of claim 7, further comprising:
and the AF or NEF sends the subscription request to the second BSF and receives the MAC address change information of the target UE sent by the second BSF.
9. A session binding information acquisition system, comprising:
a first BSF for receiving a first discovery request message; the information carried by the first discovery request message includes: the MAC address of the target UE; acquiring second BSF information bound with the session of the target UE according to the MAC address of the target UE and returning the second BSF information;
the second BSF is configured to receive a second discovery request message; the information carried by the second discovery request message includes: the MAC address of the target UE; and acquiring PCF information bound with the session of the target UE according to the MAC address of the target UE and returning.
10. The system of claim 9, comprising:
the second BSF is configured to receive a first registration request message, where information carried in the first registration request message includes: the MAC address of the target UE and the PCF information; establishing and storing a first corresponding relation between the MAC address of the target UE and the PCF information; sending a second registration request message to the first BSF, where information carried in the second registration request message includes: the MAC address of the target UE and the second BSF information;
and the first BSF is used for establishing and storing a second corresponding relation between the MAC address of the target UE and the second BSF information.
11. The system of claim 10, wherein,
the first BSF is configured to obtain, in the second correspondence, second BSF information corresponding to the MAC address of the target UE, as second BSF information bound to the session of the target UE;
the second BSF is configured to obtain PCF information corresponding to the MAC address of the target UE in the first correspondence, as PCF information bound to a session of the target UE.
12. The system of claim 11, comprising: PCF;
the PCF is configured to send the first registration request message to the second BSF after receiving an ethernet type PDU session establishment request initiated by the target UE.
13. The system of claim 12, comprising: NRF, AF or NEF;
the NRF is configured to receive a search request message sent by the AF or the NEF, and return first BSF information to the AF or the NEF, where information carried in the search request message includes: the MAC address of the target UE;
the AF or the NEF is used for sending the first discovery request message to the first BSF and receiving the second BSF information returned by the first BSF.
14. The system of claim 13, wherein,
the AF or the NEF sends the second discovery request message to the second BSF;
and the AF or the NEF receives PCF information which is returned by the second BSF and is bound with the session of the target UE.
15. The system of claim 12, wherein,
the second BSF is further configured to receive a subscription request for a MAC address change of the target UE; and when the MAC address of the target UE changes, sending the MAC address change information of the target UE.
16. The system of claim 15, wherein,
and the AF or the NEF sends the subscription request to the second BSF and receives the MAC address change information of the target UE sent by the second BSF.
17. A computer readable storage medium storing computer instructions for execution by a processor of the method of any one of claims 1 to 8.
CN202210897380.8A 2022-07-28 2022-07-28 Session binding information acquisition method, system and storage medium Pending CN117528482A (en)

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