Path, path information processing method and device, storage medium and electronic device

1. A path processing method, performed by an intermediate-session management function (I-SMF), comprising:

receiving a first message sent by an anchor-session management function (A-SMF), wherein the first message comprises context information associated with a User Equipment (UE);

determining, according to the context information, a mode corresponding to a data path established by the I-SMF, wherein the mode is indicative of whether the data path supports a Protocol Data Unit (PDU) session with multi-homing function; and

determining a node type of a node according to the mode, wherein the node type comprises an uplink classifier (UL-CL) or a branching point (BP).

2. The method of claim 1 , wherein before receiving the first message, the method further comprises:

transmitting, to the A-SMF, a second message requesting the context information associated with the UE.

3. The method of claim 1 , wherein the node type is associated with a capability information of the UE or a preference information of the UE.

4. The method of claim 1 , wherein the node type is BP, the method further comprising:

transmitting address information corresponding to the data path to the UE.

5. The method of claim 4 , wherein the address information comprising an Internet Protocol (IP) address allocated to the UE, the method further comprising:

acquiring the address information from at least one of:

a User Plane Function (UPF) selected by the I-SMF;

a network repository function (NRF); or

a dynamic host configuration protocol/authentication, authorization, accounting (DHCP/AAA) server.

6. The method of claim 5 , wherein transmitting the address information corresponding to the data path to the UE comprises at least one of:

instructing the A-SMF to transmit the address information and a routing rule corresponding to the data path to the UE; or

transmitting the address information and the routing rule corresponding to the data path to the UE.

7. The method of claim 1 , further comprising:

transmitting, to the A-SMF, a notification message notifying the A-SMF to update a connection between the A-SMF and the I-SMF.

8. A path processing method, performed by an anchor-session management function (A-SMF), comprising:

receiving, from a Policy Control Function (PCF), a second message indicating a routing policy for the UE needs to be updated, wherein the second message comprises a data network access identifier (DNAI); and

transmitting a first message to an intermediate-session management function (I-SMF), wherein the message comprises context information associated with a User Equipment (UE) and indicative of a mode corresponding to a data path established by the I-SMF, the mode being indicative of whether the data path supports a Protocol Data Unit (PDU) session with multi-homing function.

9. The method of claim 8 , further comprising:

determining, based on the second message, that a new I-SMF needs to be selected; and

transmitting, to an Access and Mobility Management Function (AMF), a third message to trigger the AMF to select the I-SMF.

10. The method of claim 9 , wherein the third message comprises at least one of:

a PDU session identifier;

the DNAI; or

an indicator indicating whether a BP can be inserted.

11. The method of claim 8 , wherein the node type is BP, the method further comprising: notifying the I-SMF to send an address information corresponding to the data path to the UE, wherein the address information comprises an Internet Protocol (IP) address allocated to the UE.

12. A network element comprising a memory for storing computer instructions and a processor in communication with the memory, wherein, when the processor executes the computer instructions, the processor is configured to cause the network element to:

receive a first message sent by an anchor-session management function (A-SMF), wherein the first message comprises context information associated with a User Equipment (UE);

determine, according to the context information, a mode corresponding to a data path established by the network element, wherein the mode is indicative of whether the data path supports a Protocol Data Unit (PDU) session with multi-homing function; and

determine a node type of a node according to the mode, wherein the node type comprises an uplink classifier (UL-CL) or a branching point (BP).

13. The network element of claim 12 , wherein, before the processor is configured to cause the network element to receive the first message, the processor is configured to cause the network element to:

transmit, to the A-SMF, a second message requesting the context information associated with the UE.

14. The network element of claim 12 , wherein the node type is BP, and wherein, when the processor executes the computer instructions, the processor is configured to further cause the network element to:

transmit address information corresponding to the data path to the UE.

15. The network element of claim 14 , wherein the address information comprising an Internet Protocol (IP) address allocated to the UE, and wherein, when the processor executes the computer instructions, the processor is configured to further cause the network element to:

acquire the address information from at least one of:

a User Plane Function (UPF) selected by the network element;

a network repository function (NRF); or

a dynamic host configuration protocol/authentication, authorization, accounting (DHCP/AAA) server.

16. The network element of claim 15 , wherein, when the processor is configured to cause the network element to transmit the address information corresponding to the data path to the UE, the processor is configured to cause the network element to perform at least one of:

instructing the A-SMF to transmit the address information and a routing rule corresponding to the data path to the UE; or

transmitting the address information and the routing rule corresponding to the data path to the UE.