CN111726427A - An information processing method, device and computer-readable storage medium - Google Patents

Abstract

The invention discloses an information processing method, equipment and a computer readable storage medium, relates to the technical field of communication, and aims to clarify the distribution mode of interface identification when an SMF (simple message function) needs to pass through a newly introduced UPF (unified Power flow) by a Branching Point mechanism. The method comprises the step of not allocating interface identification when allocating a second IPv6 prefix address corresponding to a second UPF for the terminal. The embodiment of the invention can clarify the distribution mode of the interface identifier when the SMF needs the UPF newly introduced through the Branching Point mechanism.

Description

An information processing method, device and computer-readable storage medium

technical field

The present invention relates to the field of communication technologies, and in particular, to an information processing method, a device and a computer-readable storage medium.

Background technique

In the prior art, a UE (User Equipment, user equipment) IPv6 (Internet Protocol Version 6, Internet Protocol Version 6) address allocation method is: SMF (Session Management Function, session management function) allocates an IPv6 prefix address for the UE, and uses the IPv6Router to allocate an IPv6 prefix address. The Advertisement message is delivered to the UE through a user plane UPF (User Plane Function, user plane function). The SMF allocates the interface identifier (interface identifier) corresponding to the prefix address to the UE, and transmits the interface identifier to the UE through AMF (Access and Mobility Management Function, access and mobility management function).

When the UE obtains the interface identifier, the 64-bit interface identifier can be used to construct a link local address (link local address). According to the IETF regulations, the 64-bit prefix address of the link local address is designated as FE80::/64.

The Branching Point (BP, branch point) mechanism is introduced in 5G. Branching point means that UPF can branch data according to the source IPv6 address of the data packet. Under this mechanism, a PDU (Protocol Data Unit, Protocol Data Unit) session will have two PSA (PDU Session Anchor, PDU Session Anchor, PDU Session Anchor) UPFs (ie UPFs interacting with DN (Data Network, data network)). The terminal will use the IPv6 address corresponding to the edge PSA to encapsulate the data that needs local offloading, and use the IPv6 address corresponding to the core PSA to encapsulate the data that does not need local offloading.

BP UPF filters data according to the source IPv6 address of the packet. When a packet that matches the local offload rule arrives, the BP UPF will pass the packet to UPF PSA2 and then to the local DN. The SMF can dynamically insert BP and PSA2 into the established PDU session according to the location of the UE or data flow requirements.

However, when SMF needs to insert BP, there is no clear interface identifier allocation mechanism in the existing process.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide an information processing method, a device, and a computer-readable storage medium, so that when the SMF needs a UPF newly introduced through the Branching Point mechanism, the allocation method of the interface identifier is specified.

In a first aspect, an embodiment of the present invention provides an information processing method, applied to SMF, including:

When allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, the interface identifier is not allocated;

The second UPF is a UPF newly introduced through the Branching Point (branching point) mechanism in the current PDU (Packet Data Unit, packet data unit) session.

Wherein, when allocating the second IPv6 prefix address corresponding to the second user plane function UPF to the terminal, the interface identifier is not allocated, including:

Sending session management policy update information to a PCF (Policy Control Function, policy control function), where the session management policy update information is used to indicate that the Branching Point mechanism needs to be introduced into the current PDU session;

Receive the session management policy update feedback information sent by the PCF, where the session management policy update feedback information is used to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal.

Wherein, the method also includes:

sending the second IPv6 prefix address to the terminal.

In a second aspect, an embodiment of the present invention provides an information processing method, which is applied to a session management function SMF, including:

when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, allocating the second interface identifier;

indicating to the terminal that the second interface identifier is an interface identifier corresponding to the second UPF;

The second UPF is a newly introduced UPF through the Branching Point mechanism in the current PDU session.

Wherein, when allocating the second IPv6 prefix address corresponding to the second user plane function UPF to the terminal, allocating the second interface identifier includes:

Sending session management policy update information to the PCF, where the session management policy update information is used to indicate that the Branching Point mechanism needs to be introduced into the current PDU session;

Receive the session management policy update feedback information sent by the PCF, where the session management policy update feedback information is used to instruct the SMF to allocate an interface identifier when allocating a second IPv6 prefix address corresponding to the second UPF to the terminal, and to the The assigned interface identifier indicated by the terminal is the interface identifier corresponding to the second UPF.

Wherein, the method also includes:

sending the second IPv6 prefix address to the terminal.

In a third aspect, an embodiment of the present invention provides an information processing method, applied to PCF, including:

instructing the SMF not to allocate the interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal;

The second UPF is a UPF newly introduced by the SMF in the current PDU session through the Branching Point mechanism.

The instructing the SMF not to allocate the interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal includes:

receiving session management policy update information sent by the SMF, where the session management policy update information is used to indicate that the SMF needs to introduce a Branching Point mechanism into the current PDU session;

Sending session management policy update feedback information to the SMF, where the session management policy update feedback information is used to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal.

Wherein, the method also includes:

Configure the IPV6 address allocation policy under the Branching Point mechanism.

In a fourth aspect, an embodiment of the present invention provides an information processing method, applied to PCF, including:

instructing the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and indicating to the terminal that the allocated interface identifier is the interface identifier corresponding to the second UPF;

The second UPF is a UPF newly introduced by the SMF in the current PDU session through the Branching Point mechanism.

The instructing SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and instructing the terminal that the allocated interface identifier is the interface identifier corresponding to the second UPF, includes:

receiving session management policy update information sent by the SMF, where the session management policy update information is used to indicate that the SMF needs to introduce a Branching Point mechanism into the current PDU session;

Sending session management policy update feedback information to the SMF, where the session management policy update feedback information is used to instruct the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and to the terminal The assigned interface identifier is an interface identifier corresponding to the second UPF.

Wherein, the method also includes:

Configure the IPV6 address allocation policy under the Branching Point mechanism.

In a fifth aspect, an embodiment of the present invention provides an information processing method, applied to a terminal, including:

receiving the first IPv6 prefix address and the first interface identifier corresponding to the first UPF allocated by the SMF;

receiving the second IPv6 prefix address corresponding to the second UPF allocated by the SMF;

generating a link-local address using the first interface identifier;

The first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through the Branching Point mechanism.

In a sixth aspect, an embodiment of the present invention provides an information processing method, applied to a terminal, including:

receiving the first IPv6 prefix address and the first interface identifier corresponding to the first UPF allocated by the SMF;

Receive a second IPv6 prefix address and a second interface identifier corresponding to a second UPF allocated by the SMF, and receive an indication sent by the SMF, where the indication is used to indicate that the second interface identifier corresponds to the second UPF the interface identifier;

Selecting a target interface identifier from the first interface identifier and the second interface identifier, and using the target interface identifier to generate a link-local address;

The first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through the Branching Point mechanism.

In a seventh aspect, an embodiment of the present invention provides an information processing apparatus, applied to SMF, including: a processor and a transceiver;

The processor is configured to not allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal;

The second UPF is a newly introduced UPF through the Branching Point mechanism in the current PDU session.

The transceiver is configured to send session management policy update information to the PCF, where the session management policy update information is used to indicate that the Branching Point mechanism needs to be introduced into the current PDU session; receive the session management policy update sent by the PCF Feedback information, where the session management policy update feedback information is used to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal.

Wherein, the transceiver is further configured to send the second IPv6 prefix address to the terminal.

In an eighth aspect, an embodiment of the present invention provides an information processing apparatus, applied to SMF, including: a processor and a transceiver;

The processor is configured to allocate the second interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal;

indicating to the terminal that the second interface identifier is an interface identifier corresponding to the second UPF;

The second UPF is a newly introduced UPF through the Branching Point mechanism in the current PDU session.

Wherein, the transceiver is used to send session management policy update information to the PCF, where the session management policy update information is used to indicate that the Branching Point mechanism needs to be introduced into the current PDU session;

Receive the session management policy update feedback information sent by the PCF, where the session management policy update feedback information is used to instruct the SMF to allocate an interface identifier when allocating a second IPv6 prefix address corresponding to the second UPF to the terminal, and to the The assigned interface identifier indicated by the terminal is the interface identifier corresponding to the second UPF.

Wherein, the transceiver is further configured to send the second IPv6 prefix address to the terminal.

In a ninth aspect, an embodiment of the present invention provides an information processing apparatus, applied to a PCF, including: a processor and a transceiver;

the processor, configured to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal;

The second UPF is a UPF newly introduced by the SMF in the current PDU session through the Branching Point mechanism.

The transceiver is configured to receive session management policy update information sent by the SMF, where the session management policy update information is used to indicate that the SMF needs to introduce a Branching Point mechanism into the current PDU session;

Sending session management policy update feedback information to the SMF, where the session management policy update feedback information is used to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal.

Wherein, the processor is further configured to configure an IPV6 address allocation strategy under the Branching Point mechanism.

In a tenth aspect, an embodiment of the present invention provides an information processing apparatus, applied to a PCF, including: a processor and a transceiver;

the processor, configured to instruct the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and indicate to the terminal that the allocated interface identifier is the interface identifier corresponding to the second UPF;

The second UPF is a UPF newly introduced by the SMF in the current PDU session through the Branching Point mechanism.

The transceiver is configured to receive session management policy update information sent by the SMF, where the session management policy update information is used to indicate that the SMF needs to introduce a Branching Point mechanism into the current PDU session;

Sending session management policy update feedback information to the SMF, where the session management policy update feedback information is used to instruct the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and to the terminal The assigned interface identifier is an interface identifier corresponding to the second UPF.

Wherein, the processor is further configured to configure an IPV6 address allocation strategy under the Branching Point mechanism.

In an eleventh aspect, an embodiment of the present invention provides an information processing apparatus, applied to a terminal, including: a processor and a transceiver;

the transceiver, configured to receive the first IPv6 prefix address and the first interface identifier corresponding to the first UPF allocated by the SMF; receive the second IPv6 prefix address corresponding to the second UPF allocated by the SMF;

the processor, configured to generate a link-local address by using the first interface identifier;

The first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through the Branching Point mechanism.

In a twelfth aspect, an embodiment of the present invention provides an information processing apparatus, applied to a terminal, including: a processor and a transceiver;

the transceiver, configured to receive the first IPv6 prefix address and the first interface identifier corresponding to the first UPF allocated by the SMF; receive the second IPv6 prefix address and the second interface identifier corresponding to the second UPF allocated by the SMF, and receiving an indication sent by the SMF, where the indication is used to indicate that the second interface identifier is an interface identifier corresponding to the second UPF;

the processor, configured to select a target interface identifier from the first interface identifier and the second interface identifier, and use the target interface identifier to generate a link-local address;

The first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through the Branching Point mechanism.

In a thirteenth aspect, an embodiment of the present invention provides a communication device, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor;

The processor is configured to read the program in the memory to implement the steps in the method according to the first aspect; or implement the steps in the method according to the second aspect; or implement the method according to the third aspect or implement the steps in the method as described in the fourth aspect; or implement the steps in the method as described in the fifth aspect; or implement the steps in the method as described in the sixth aspect.

In a thirteenth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing a computer program, and when the computer program is executed by a processor, the steps in the method of the first aspect are performed; The steps in the method described in the second aspect; or the steps in the method described in the third aspect are realized; or the steps in the method described in the fourth aspect are realized; or the steps in the method described in the fifth aspect are realized steps; or implement the steps in the method according to the sixth aspect.

In the embodiment of the present invention, the allocation mechanism of the interface identifier is clarified, thereby improving the communication efficiency.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor.

Fig. 1 is one of the flow charts of the information processing method provided by the embodiment of the present invention;

Fig. 2 is the second flow chart of the information processing method provided by the embodiment of the present invention;

3 is a third flowchart of an information processing method provided by an embodiment of the present invention;

4 is a fourth flowchart of an information processing method provided by an embodiment of the present invention;

5 is a fifth flowchart of an information processing method provided by an embodiment of the present invention;

6 is a sixth flowchart of an information processing method provided by an embodiment of the present invention;

7 is a seventh flowchart of an information processing method provided by an embodiment of the present invention;

8 is one of the structural diagrams of an information processing apparatus provided by an embodiment of the present invention;

9 is a second structural diagram of an information processing apparatus provided by an embodiment of the present invention;

10 is a third structural diagram of an information processing apparatus provided by an embodiment of the present invention;

11 is a fourth structural diagram of an information processing apparatus provided by an embodiment of the present invention;

12 is a fifth structural diagram of an information processing apparatus provided by an embodiment of the present invention;

13 is a sixth structural diagram of an information processing apparatus provided by an embodiment of the present invention;

14 is one of the structural diagrams of a communication device provided by an embodiment of the present invention;

15 is the second structural diagram of a communication device provided by an embodiment of the present invention;

FIG. 16 is a third structural diagram of a communication device provided by an embodiment of the present invention;

FIG. 17 is a fourth structural diagram of a communication device provided by an embodiment of the present invention;

18 is a fifth structural diagram of a communication device provided by an embodiment of the present invention;

FIG. 19 is a sixth structural diagram of a communication device provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIG. 1, FIG. 1 is a flowchart of an information processing method provided by an embodiment of the present invention, applied to SMF, as shown in FIG. 1, including the following steps:

Step 101: When assigning the second IPv6 prefix address corresponding to the second UPF to the terminal, no interface identifier is assigned; wherein the second UPF is a UPF newly introduced through the Branching Point (BP) mechanism in the current PDU session.

In practical applications, the terminal and a certain UPF (which may be referred to as the first UPF) have established a PDU session. Here, the established PDU session can be regarded as the current PDU session. According to needs, SMF can decide to do UPF relocation (relocation) and insert BP UPF.

Specifically, in this step, the SMF may send session management policy update information to the PCF, where the session management policy update information is used to indicate that the Branching Point mechanism needs to be introduced into the current PDU session. Afterwards, the session management policy update feedback information sent by the PCF is received, where the session management policy update feedback information is used to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal.

Then, according to the instruction, the SFM does not allocate the interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal. Afterwards, the SMF may send the second IPv6 prefix address assigned to the terminal to the terminal.

After receiving the interface ID, the terminal stores it locally until a new interface ID is allocated by the SMF. When the terminal releases the IPv6 address, only the IPv6 prefix address is released, and the interface identifier is not released.

In the embodiment of the present invention, the allocation mechanism of the interface identifier is clarified, thereby improving the communication efficiency.

Referring to FIG. 2, FIG. 2 is a flowchart of an information processing method provided by an embodiment of the present invention, applied to SMF, as shown in FIG. 2, including the following steps:

Step 201: When assigning a second IPv6 prefix address corresponding to the second UPF to the terminal, assign a second interface identifier. The second UPF is a newly introduced UPF through the Branching Point mechanism in the current PDU session.

For the meaning of the current PDU session, reference may be made to the descriptions in the foregoing embodiments.

In this step, the SMF may send session management policy update information to the PCF, where the session management policy update information is used to indicate that the Branching Point mechanism needs to be introduced into the current PDU session. After that, receive the session management policy update feedback information sent by the PCF, where the session management policy update feedback information is used to instruct the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and send the message to the SMF. The assigned interface identifier indicated by the terminal is an interface identifier corresponding to the second UPF.

Step 202, indicating to the terminal that the second interface identifier is an interface identifier corresponding to the second UPF;

Then, according to the instruction, the SMF allocates an interface identifier when assigning the second IPv6 prefix address to the terminal, and indicates to the terminal that the second interface identifier is the interface identifier corresponding to the second UPF, so as to facilitate the terminal to make a decision. Afterwards, the SMF may send the second IPv6 prefix address allocated to the terminal and instruct the terminal. The specific form of the indication is not limited in this embodiment of the present invention.

In the embodiment of the present invention, the allocation mechanism of the interface identifier is clarified, thereby improving the communication efficiency.

Referring to FIG. 3, FIG. 3 is a flowchart of an information processing method provided by an embodiment of the present invention, applied to PCF, as shown in FIG. 3, including the following steps:

Step 301: Instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal; wherein, the second UPF is the UPF newly introduced by the SMF in the current PDU session through the Branching Point mechanism .

For the meaning of the current PDU session, reference may be made to the descriptions in the foregoing embodiments.

Specifically, in this step, the PCF may receive the session management policy update information sent by the SMF, where the session management policy update information is used to indicate that the SMF needs to introduce the Branching Point mechanism into the current PDU session. Afterwards, the PCF sends session management policy update feedback information to the SMF, where the session management policy update feedback information is used to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal.

In order to improve communication efficiency, before this step, the PCF may also be configured with an IPV6 address allocation strategy under the Branching Point mechanism. The allocation strategy may include not allocating an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal.

In the embodiment of the present invention, the allocation mechanism of the interface identifier is clarified, thereby improving the communication efficiency.

Referring to FIG. 4, FIG. 4 is a flowchart of an information processing method provided by an embodiment of the present invention, applied to PCF, as shown in FIG. 4, including the following steps:

Step 401: Instruct the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and indicate to the terminal that the allocated interface identifier is the interface identifier corresponding to the second UPF; wherein the second UPF The UPF newly introduced by the SMF through the Branching Point mechanism in the current PDU session.

For the meaning of the current PDU session, reference may be made to the descriptions in the foregoing embodiments.

Specifically, in this step, the PCF may receive the session management policy update information sent by the SMF, where the session management policy update information is used to indicate that the SMF needs to introduce the Branching Point mechanism into the current PDU session. Afterwards, the PCF sends session management policy update feedback information to the SMF, where the session management policy update feedback information is used to instruct the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and send the message to the SMF. The assigned interface identifier indicated by the terminal is an interface identifier corresponding to the second UPF.

In order to improve communication efficiency, before this step, the PCF may also be configured with an IPV6 address allocation strategy under the Branching Point mechanism. The allocation strategy may include allocating an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and the like.

In the embodiment of the present invention, the allocation mechanism of the interface identifier is clarified, thereby improving the communication efficiency.

Referring to FIG. 5, FIG. 5 is a flowchart of an information processing method provided by an embodiment of the present invention, applied to a terminal, as shown in FIG. 5, including the following steps:

Step 501: Receive the first IPv6 prefix address and the first interface identifier corresponding to the first UPF allocated by the SMF.

Step 502: Receive the second IPv6 prefix address corresponding to the second UPF allocated by the SMF.

Step 503: Generate a link-local address by using the first interface identifier.

The first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through the Branching Point mechanism.

In this embodiment, the terminal stores the interface identifier locally after receiving it until the SMF allocates a new interface identifier. When the terminal releases the IPv6 address, only the IPv6 prefix address is released, and the interface identifier is not released.

In the embodiment of the present invention, the allocation mechanism of the interface identifier is clarified, thereby improving the communication efficiency.

Referring to FIG. 6, FIG. 6 is a flowchart of an information processing method provided by an embodiment of the present invention, applied to a terminal, as shown in FIG. 6, including the following steps:

Step 601: Receive the first IPv6 prefix address and the first interface identifier corresponding to the first UPF allocated by the SMF.

Step 602: Receive a second IPv6 prefix address and a second interface identifier corresponding to a second UPF allocated by the SMF, and receive an indication sent by the SMF, where the indication is used to indicate that the second interface identifier is the first interface identifier. 2. The interface identifier corresponding to the UPF.

The first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through the Branching Point mechanism.

Step 603, selecting a target interface identifier from the first interface identifier and the second interface identifier, and using the target interface identifier to generate a link-local address;

In this embodiment of the present invention, the manner in which the terminal selects the target interface identifier is not limited. For example, the terminal may randomly select one of the first interface identification and the second interface identification as the target interface identification, or may also select the first interface identification or the second interface identification as the target interface identification.

In the embodiment of the present invention, the allocation mechanism of the interface identifier is clarified, thereby improving the communication efficiency.

According to the provisions of the IETF protocol, the link local address of the terminal uses the interfaceidentifier to construct the 64-bit IP address. The purpose of the link local address of the terminal is to identify the address of the node in the network, so in the BP scenario, the UE only needs to have one link local address.

Then, in practical applications, the terminal can use the interface identifier generated by the SMF when the IPv6 address is allocated for the first UPF. At this time, when the SMF allocates the IPv6 address prefix of the second UPF, the SMF does not generate the second Interface identifier according to the session policy previously configured by the PCF. Alternatively, when the SMF allocates the IPv6 address prefix of the second UPF, it can still update the configured session policy according to the PCF, and then generate the second Interface identifier. After that, the terminal selects the interface identifier to be used according to the requirements.

As shown in FIG. 7 , it is a schematic flowchart of an information indication method according to an embodiment of the present invention. In a practical application, as shown in FIG. 7 , the terminal has established a PDU session with the UPF1 in the figure. The method includes:

Step 701, the SMF decides to perform UPF relocation.

According to the needs of practical applications, SMF decided to introduce BP.

In steps 702a-702b, the SMF establishes a PDU session with the UPF2 through the N4 session establishment request. After that, UPF2 sends N4 session establishment response to SMF.

Steps 703-704: The SMF sends the session management policy update information to the PCF, and requests to obtain the updated session management policy. Wherein, the information includes but is not limited to: information used to indicate that the BP mechanism will be introduced into the current PDU session.

The PCF returns the session management policy update feedback information to the SMF according to the request.

The PCF recognizes that the update request is sent due to the introduction of the BP mechanism by the SMF. Therefore, the PCF will feed back the session management policy update feedback information to the SMF. Among them, the information includes but is not limited to:

Indication information, which is used to instruct SMF to no longer allocate interface identifiers when assigning the second (new) IPv6 prefix address; or, this information can also be used to instruct SMF to allocate the second (new) IPv6 prefix When addressing, the interface identifier still needs to be assigned, but it is necessary to indicate to the terminal that the interface identifier is the newly assigned interface identifier.

For the PCF, in the network configuration stage, the PCF can preconfigure the network policy to specify the IPV6 address allocation policy under the BP mechanism.

According to the instructions of PCF, SMF has the following two methods when allocating an IPv6 prefix address to the selected UPF:

First, when assigning IPv6 prefix addresses, interface identifiers are no longer assigned;

Second, when assigning the IPv6 prefix address, assign the interface identifier, and indicate to the terminal that the interface identifier is a new interface identifier.

Step 705, the SMF selects the branch point UPF.

SMF establishes PDU session with BP UPF through N4 session establishment request. After that, BPUPF sends N4 session establishment response to SMF.

After that, the terminal performs processing according to the information sent by the SMF.

If the terminal receives only one interface identifier, the terminal will construct the link local address according to the received interface identifier. If the terminal receives two interface identifiers, the terminal selects an interface identifier from the two received interface identifiers, and then uses the selected interface identifier to construct a link local address. In this embodiment of the present invention, the manner in which the terminal selects an interface identifier from two interface identifiers is not limited. For example, the terminal may be randomly selected and so on.

Through the above solution, it is clarified that when the terminal uses multiple IPV6 addresses, the SMF assigns the interface identifier.

As shown in FIG. 8 , the information processing apparatus according to the embodiment of the present invention, applied to SMF, includes: a processor 801 and a transceiver 802;

The processor 801 is configured to not allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, wherein the second UPF is a UPF newly introduced through the Branching Point mechanism in the current PDU session.

Optionally, the transceiver 802 is configured to send session management policy update information to the PCF, where the session management policy update information is used to indicate that a Branching Point mechanism needs to be introduced into the current PDU session; receive the session sent by the PCF. Management policy update feedback information, where the session management policy update feedback information is used to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal.

Optionally, the transceiver 802 is further configured to send the second IPv6 prefix address to the terminal.

For the working principle of the apparatus in the embodiment of the present invention, reference may be made to the description of the foregoing method embodiment.

In the embodiment of the present invention, the allocation mechanism of the interface identifier is clarified, thereby improving the communication efficiency.

As shown in FIG. 9 , the information processing apparatus according to the embodiment of the present invention, applied to SMF, includes: a processor 901 and a transceiver 902;

The processor 901 is configured to allocate a second interface identifier when allocating a second IPv6 prefix address corresponding to the second UPF to the terminal;

indicating to the terminal that the second interface identifier is an interface identifier corresponding to the second UPF;

The second UPF is a newly introduced UPF through the Branching Point mechanism in the current PDU session.

Optionally, the transceiver 902 is configured to send session management policy update information to the PCF, where the session management policy update information is used to indicate that the Branching Point mechanism needs to be introduced into the current PDU session; receive the session sent by the PCF. Management policy update feedback information, the session management policy update feedback information is used to instruct the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and indicate to the terminal that the allocated interface identifier is The interface identifier corresponding to the second UPF.

Optionally, the transceiver 902 is configured to send the second IPv6 prefix address to the terminal.

For the working principle of the apparatus in the embodiment of the present invention, reference may be made to the description of the foregoing method embodiment.

In the embodiment of the present invention, the allocation mechanism of the interface identifier is clarified, thereby improving the communication efficiency.

As shown in FIG. 10 , the information processing apparatus according to the embodiment of the present invention, applied to PCF, includes: a processor 1001 and a transceiver 1002;

The processor 1001 is configured to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal;

The second UPF is a UPF newly introduced by the SMF in the current PDU session through the Branching Point mechanism.

Optionally, the transceiver 1002 is configured to receive session management policy update information sent by the SMF, where the session management policy update information is used to indicate that the SMF needs to introduce a Branching Point mechanism into the current PDU session;

Sending session management policy update feedback information to the SMF, where the session management policy update feedback information is used to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal.

Optionally, the processor 1001 is configured to configure an IPV6 address allocation policy under the Branching Point mechanism.

For the working principle of the apparatus in the embodiment of the present invention, reference may be made to the description of the foregoing method embodiment.

In the embodiment of the present invention, the allocation mechanism of the interface identifier is clarified, thereby improving the communication efficiency.

As shown in FIG. 11 , the information processing apparatus according to the embodiment of the present invention, applied to PCF, includes: a processor 1101 and a transceiver 1102;

The processor 1101 is configured to instruct the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and indicate to the terminal that the allocated interface identifier is the interface identifier corresponding to the second UPF;

The second UPF is a UPF newly introduced by the SMF in the current PDU session through the Branching Point mechanism.

Optionally, the transceiver 1102 is configured to receive session management policy update information sent by the SMF, where the session management policy update information is used to indicate that the SMF needs to introduce the Branching Point mechanism into the current PDU session; The SMF sends session management policy update feedback information, where the session management policy update feedback information is used to instruct the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and indicate to the terminal The assigned interface identifier is the interface identifier corresponding to the second UPF.

Optionally, the processor 1101 is further configured to configure an IPV6 address allocation policy under the Branching Point mechanism.

For the working principle of the apparatus in the embodiment of the present invention, reference may be made to the description of the foregoing method embodiment.

In the embodiment of the present invention, the allocation mechanism of the interface identifier is clarified, thereby improving the communication efficiency.

As shown in FIG. 12 , the information processing apparatus according to the embodiment of the present invention, applied to a terminal, includes: a processor 1201 and a transceiver 1202;

The transceiver 1202 is configured to receive the first IPv6 prefix address and the first interface identifier corresponding to the first UPF allocated by the SMF; and receive the second IPv6 prefix address corresponding to the second UPF allocated by the SMF;

The processor 1201 is configured to generate a link-local address by using the first interface identifier;

The first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through the Branching Point mechanism.

For the working principle of the apparatus in the embodiment of the present invention, reference may be made to the description of the foregoing method embodiment.

In the embodiment of the present invention, the allocation mechanism of the interface identifier is clarified, thereby improving the communication efficiency.

As shown in FIG. 13 , the information processing apparatus according to the embodiment of the present invention, applied to a terminal, includes: a processor 1301 and a transceiver 1302;

The transceiver 1301 is configured to receive the first IPv6 prefix address and the first interface identifier corresponding to the first UPF allocated by the SMF; receive the second IPv6 prefix address and the second interface identifier corresponding to the second UPF allocated by the SMF, and receiving an indication sent by the SMF, where the indication is used to indicate that the second interface identifier is an interface identifier corresponding to the second UPF;

the processor 1302, configured to select a target interface identifier from the first interface identifier and the second interface identifier, and use the target interface identifier to generate a link-local address;

The first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through the Branching Point mechanism.

For the working principle of the apparatus in the embodiment of the present invention, reference may be made to the description of the foregoing method embodiment.

In the embodiment of the present invention, the allocation mechanism of the interface identifier is clarified, thereby improving the communication efficiency.

As shown in FIG. 14 , the communication device according to the embodiment of the present invention, applied to SMF, includes:

The processor 1400 is configured to read the program in the memory 1420 and perform the following processes:

When allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, the interface identifier is not allocated;

The second UPF is a UPF newly introduced through the Branching Point mechanism in the current PDU session.

The transceiver 1410 is used for receiving and transmitting data under the control of the processor 1400 .

14, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1400 and various circuits of memory represented by memory 1420 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1410 may be a number of elements, including a transmitter and a transceiver, that provide a means for communicating with various other devices over a transmission medium. The processor 1400 is responsible for managing the bus architecture and general processing, and the memory 1420 may store data used by the processor 1400 in performing operations.

The processor 1400 is responsible for managing the bus architecture and general processing, and the memory 1420 may store data used by the processor 1400 in performing operations.

The processor 1400 is also used to read the computer program, and perform the following steps:

Send session management policy update information to the policy control function PCF through the transceiver 1410, where the session management policy update information is used to indicate that the Branching Point mechanism needs to be introduced into the current PDU session; receive the session management policy update feedback information sent by the PCF , the session management policy update feedback information is used to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal.

The processor 1400 is also used to read the computer program, and perform the following steps:

The second IPv6 prefix address is sent to the terminal through the transceiver 1410 .

As shown in FIG. 15 , the communication device according to the embodiment of the present invention, applied to SMF, includes:

The processor 1500 is configured to read the program in the memory 1520 and perform the following processes:

when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, allocating the second interface identifier;

indicating to the terminal that the second interface identifier is an interface identifier corresponding to the second UPF;

The second UPF is a newly introduced UPF through the Branching Point mechanism in the current PDU session.

The transceiver 1510 is used to receive and transmit data under the control of the processor 1500 .

15, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1500 and various circuits of memory represented by memory 1520 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1510 may be a number of elements, including transmitters and transceivers, that provide a means for communicating with various other devices over a transmission medium. The processor 1500 is responsible for managing the bus architecture and general processing, and the memory 1520 may store data used by the processor 1500 in performing operations.

The processor 1500 is responsible for managing the bus architecture and general processing, and the memory 1520 may store data used by the processor 1500 in performing operations.

The processor 1500 is also used to read the computer program and perform the following steps:

Send the session management policy update information to the PCF through the transceiver 1510, where the session management policy update information is used to indicate that the Branching Point mechanism needs to be introduced into the current PDU session; receive the session management policy update feedback information sent by the PCF, the The session management policy update feedback information is used to instruct the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and to indicate to the terminal that the allocated interface identifier is the interface identifier corresponding to the second UPF.

The processor 1500 is also used to read the computer program and perform the following steps:

The second IPv6 prefix address is sent to the terminal through the transceiver 1510 .

As shown in FIG. 16 , the communication device according to the embodiment of the present invention, applied to PCF, includes:

The processor 1600 is configured to read the program in the memory 1620, and execute the following processes:

Instructs the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal; wherein the second UPF is a UPF newly introduced by the SMF in the current PDU session through the Branching Point mechanism.

The transceiver 1610 is used to receive and transmit data under the control of the processor 1600 .

16, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1600 and various circuits of memory represented by memory 1620 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1610 may be a number of elements, including a transmitter and a transceiver, that provide a means for communicating with various other devices over a transmission medium. The processor 1600 is responsible for managing the bus architecture and general processing, and the memory 1620 may store data used by the processor 1600 in performing operations.

The processor 1600 is responsible for managing the bus architecture and general processing, and the memory 1620 may store data used by the processor 1600 in performing operations.

The processor 1600 is also used to read the computer program, and perform the following steps:

Receive the session management policy update information sent by the SMF through the transceiver 1610, where the session management policy update information is used to indicate that the SMF needs to introduce the Branching Point mechanism into the current PDU session; send the session management policy update to the SMF Feedback information, where the session management policy update feedback information is used to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal.

The processor 1600 is also used to read the computer program, and perform the following steps:

Configure the IPV6 address allocation policy under the Branching Point mechanism.

As shown in FIG. 17 , the communication device according to the embodiment of the present invention, applied to PCF, includes:

The processor 1700 is configured to read the program in the memory 1720 and perform the following processes:

instructing the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and indicating to the terminal that the allocated interface identifier is the interface identifier corresponding to the second UPF; wherein the second UPF is the SMF is a newly introduced UPF through the Branching Point mechanism in the current PDU session.

The transceiver 1710 is used to receive and transmit data under the control of the processor 1700 .

17, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1700 and various circuits of memory represented by memory 1720 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1710 may be a number of elements, including a transmitter and a transceiver, that provide a means for communicating with various other devices over a transmission medium. The processor 1700 is responsible for managing the bus architecture and general processing, and the memory 1720 may store data used by the processor 1700 in performing operations.

The processor 1700 is responsible for managing the bus architecture and general processing, and the memory 1720 may store data used by the processor 1700 in performing operations.

The processor 1700 is also used to read the computer program and perform the following steps:

Receive the session management policy update information sent by the SMF through the transceiver 1710, where the session management policy update information is used to indicate that the SMF needs to introduce the Branching Point mechanism into the current PDU session; send the session management policy update to the SMF Feedback information, the session management policy update feedback information is used to instruct the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and indicate to the terminal that the allocated interface identifier is the second UPF The corresponding interface identifier.

The processor 1700 is also used to read the computer program and perform the following steps:

Configure the IPV6 address allocation policy under the Branching Point mechanism.

As shown in FIG. 18 , a communication device according to an embodiment of the present invention, applied to a terminal, includes:

The processor 1800 is configured to read the program in the memory 1820, and perform the following processes:

Receive the first IPv6 prefix address and the first interface identifier corresponding to the first UPF allocated by the SMF through the transceiver 1810; receive the second IPv6 prefix address corresponding to the second UPF allocated by the SMF; generate a chain by using the first interface identifier Road local address; wherein, the first UPF is an existing UPF in the current session, and the second UPF is a newly introduced UPF in the current PDU session through the Branching Point mechanism.

The transceiver 1810 is used to receive and transmit data under the control of the processor 1800 .

18, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1800 and various circuits of memory represented by memory 1820 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1810 may be a number of elements, including a transmitter and a receiver, that provide a means for communicating with various other devices over a transmission medium. For different user equipments, the user interface 1830 may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1800 is responsible for managing the bus architecture and general processing, and the memory 1820 may store data used by the processor 1800 in performing operations.

As shown in FIG. 19 , a communication device according to an embodiment of the present invention, applied to a terminal, includes:

The processor 1900, for reading the program in the memory 1919, performs the following processes:

The transceiver 1910 receives the first IPv6 prefix address and the first interface identifier corresponding to the first UPF allocated by the SMF; receives the second IPv6 prefix address and the second interface identifier corresponding to the second UPF allocated by the SMF, and receives the An indication sent by the SMF, where the indication is used to indicate that the second interface identifier is the interface identifier corresponding to the second UPF; select the target interface identifier from the first interface identifier and the second interface identifier, and use the The target interface identifier generates a link-local address; wherein, the first UPF is an existing UPF in the current session, and the second UPF is a newly introduced UPF in the current PDU session through the Branching Point mechanism.

The transceiver 1910 is used to receive and transmit data under the control of the processor 1900 .

19, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1900 and various circuits of memory represented by memory 1919 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1910 may be a number of elements, including a transmitter and a receiver, that provide a means for communicating with various other devices over a transmission medium. For different user equipments, the user interface 1930 may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1900 is responsible for managing the bus architecture and general processing, and the memory 1919 may store data used by the processor 1900 in performing operations.

The computer-readable storage medium of the embodiment of the present invention is used to store a computer program, and the computer program can be executed by a processor to implement the following steps:

When allocating the second IPv6 prefix address corresponding to the second user plane function UPF to the terminal, no interface identifier is allocated;

Wherein, the second UPF is a UPF newly introduced through the branching point mechanism in the current packet data unit PDU session.

Wherein, when allocating the second IPv6 prefix address corresponding to the second user plane function UPF to the terminal, the interface identifier is not allocated, including:

Sending session management policy update information to the policy control function PCF, where the session management policy update information is used to indicate that the Branching Point mechanism needs to be introduced into the current PDU session;

Receive the session management policy update feedback information sent by the PCF, where the session management policy update feedback information is used to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal.

Wherein, the method also includes:

sending the second IPv6 prefix address to the terminal.

The computer-readable storage medium of the embodiment of the present invention is used to store a computer program, and the computer program can be executed by a processor to implement the following steps:

when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, allocating the second interface identifier;

indicating to the terminal that the second interface identifier is an interface identifier corresponding to the second UPF;

The second UPF is a newly introduced UPF through the Branching Point mechanism in the current PDU session.

Wherein, when allocating the second IPv6 prefix address corresponding to the second user plane function UPF to the terminal, allocating the second interface identifier includes:

Sending session management policy update information to the PCF, where the session management policy update information is used to indicate that the Branching Point mechanism needs to be introduced into the current PDU session;

Receive the session management policy update feedback information sent by the PCF, where the session management policy update feedback information is used to instruct the SMF to allocate an interface identifier when allocating a second IPv6 prefix address corresponding to the second UPF to the terminal, and to the The assigned interface identifier indicated by the terminal is the interface identifier corresponding to the second UPF.

Wherein, the method also includes:

sending the second IPv6 prefix address to the terminal.

The computer-readable storage medium of the embodiment of the present invention is used to store a computer program, and the computer program can be executed by a processor to implement the following steps:

instructing the SMF not to allocate the interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal;

The second UPF is a UPF newly introduced by the SMF in the current PDU session through the Branching Point mechanism.

The instructing the SMF not to allocate the interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal includes:

receiving session management policy update information sent by the SMF, where the session management policy update information is used to indicate that the SMF needs to introduce a Branching Point mechanism into the current PDU session;

Sending session management policy update feedback information to the SMF, where the session management policy update feedback information is used to instruct the SMF not to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal.

Wherein, the method also includes:

Configure the IPV6 address allocation policy under the Branching Point mechanism.

The computer-readable storage medium of the embodiment of the present invention is used to store a computer program, and the computer program can be executed by a processor to implement the following steps:

instructing the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and indicating to the terminal that the allocated interface identifier is the interface identifier corresponding to the second UPF;

The second UPF is a UPF newly introduced by the SMF in the current PDU session through the Branching Point mechanism.

The instructing SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and instructing the terminal that the allocated interface identifier is the interface identifier corresponding to the second UPF, includes:

receiving session management policy update information sent by the SMF, where the session management policy update information is used to indicate that the SMF needs to introduce a Branching Point mechanism into the current PDU session;

Sending session management policy update feedback information to the SMF, where the session management policy update feedback information is used to instruct the SMF to allocate an interface identifier when allocating the second IPv6 prefix address corresponding to the second UPF to the terminal, and to the terminal The assigned interface identifier is an interface identifier corresponding to the second UPF.

Wherein, the method also includes:

Configure the IPV6 address allocation policy under the Branching Point mechanism.

The computer-readable storage medium of the embodiment of the present invention is used to store a computer program, and the computer program can be executed by a processor to implement the following steps:

receiving the first IPv6 prefix address and the first interface identifier corresponding to the first UPF allocated by the SMF;

receiving the second IPv6 prefix address corresponding to the second UPF allocated by the SMF;

generating a link-local address using the first interface identifier;

The first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through the Branching Point mechanism.

The computer-readable storage medium of the embodiment of the present invention is used to store a computer program, and the computer program can be executed by a processor to implement the following steps:

receiving the first IPv6 prefix address and the first interface identifier corresponding to the first UPF allocated by the SMF;

Receive a second IPv6 prefix address and a second interface identifier corresponding to a second UPF allocated by the SMF, and receive an indication sent by the SMF, where the indication is used to indicate that the second interface identifier corresponds to the second UPF the interface identifier;

Selecting a target interface identifier from the first interface identifier and the second interface identifier, and using the target interface identifier to generate a link-local address;

The first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through the Branching Point mechanism.

In the several embodiments provided in this application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included individually, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium. The above software functional unit is stored in a storage medium, and includes several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute part of the steps of the transceiving method described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM for short), Random Access Memory (RAM for short), magnetic disk or CD, etc. that can store program codes medium.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (30)

1. An information processing method applied to a Session Management Function (SMF) is characterized by comprising the following steps:

when a second IPv6 prefix address corresponding to a second user plane function UPF is allocated to the terminal, no interface identifier is allocated;

wherein, the second UPF is a UPF newly introduced by a branch Point Branching Point mechanism in the current packet data unit PDU session.

2. The method according to claim 1, wherein the not assigning the interface identifier when assigning the second IPv6 prefix address corresponding to the second user plane function UPF to the terminal comprises:

sending session management policy update information to a policy control function PCF, wherein the session management policy update information is used for indicating that a Branching Point mechanism needs to be introduced into a current PDU session;

and receiving session management policy update feedback information sent by the PCF, wherein the session management policy update feedback information is used for indicating that the SMF does not allocate an interface identifier when allocating a second IPv6 prefix address corresponding to a second UPF to the terminal.

3. The method of claim 1, further comprising:

and sending the second IPv6 prefix address to the terminal.

4. An information processing method applied to a Session Management Function (SMF) is characterized by comprising the following steps:

when a second IPv6 prefix address corresponding to a second UPF is allocated to the terminal, a second interface identifier is allocated;

indicating the second interface identifier to the terminal as the interface identifier corresponding to the second UPF;

wherein the second UPF is a UPF newly introduced in the current PDU session through a Branching Point mechanism.

5. The method according to claim 4, wherein the allocating a second interface identifier when allocating a second IPv6 prefix address corresponding to a second user plane function UPF to the terminal comprises:

sending session management policy update information to the PCF, wherein the session management policy update information is used for indicating that a Branching Point mechanism needs to be introduced into the current PDU session;

and receiving session management policy update feedback information sent by the PCF, wherein the session management policy update feedback information is used to indicate that the SMF allocates an interface identifier when allocating a second IPv6 prefix address corresponding to a second UPF to the terminal, and indicate that the allocated interface identifier is an interface identifier corresponding to the second UPF to the terminal.

6. The method of claim 4, further comprising:

and sending the second IPv6 prefix address to the terminal.

7. An information processing method applied to a PCF, comprising:

indicating the SMF not to allocate the interface identifier when allocating a second IPv6 prefix address corresponding to the second UPF to the terminal;

and the second UPF is a UPF newly introduced by the SMF in the current PDU session through a Branching Point mechanism.

8. The method of claim 7, wherein the instructing the SMF to not assign an interface identifier when assigning a second IPv6 prefix address corresponding to a second UPF for the terminal comprises:

receiving session management policy update information sent by the SMF, wherein the session management policy update information is used for indicating that the SMF needs to introduce a Branching Point mechanism into a current PDU session;

and sending session management policy update feedback information to the SMF, wherein the session management policy update feedback information is used for indicating that the SMF does not allocate an interface identifier when allocating a second IPv6 prefix address corresponding to a second UPF to the terminal.

9. The method of claim 7, further comprising:

and configuring an allocation strategy of the IPV6 address under the Branching Point mechanism.

10. An information processing method applied to a PCF, comprising:

indicating the SMF to allocate an interface identifier when allocating a second IPv6 prefix address corresponding to a second UPF to the terminal, and indicating the allocated interface identifier to the terminal as the interface identifier corresponding to the second UPF;

and the second UPF is a UPF newly introduced by the SMF in the current PDU session through a Branching Point mechanism.

11. The method of claim 10, wherein the instructing the SMF to allocate an interface identifier when allocating a second IPv6 prefix address corresponding to a second UPF to the terminal, and instructing the allocated interface identifier to be the interface identifier corresponding to the second UPF to the terminal, comprises:

receiving session management policy update information sent by the SMF, wherein the session management policy update information is used for indicating that the SMF needs to introduce a Branching Point mechanism into a current PDU session;

and sending session management policy update feedback information to the SMF, wherein the session management policy update feedback information is used for indicating that the SMF allocates an interface identifier when allocating a second IPv6 prefix address corresponding to a second UPF to the terminal, and indicating that the allocated interface identifier is the interface identifier corresponding to the second UPF to the terminal.

12. The method of claim 10, further comprising:

and configuring an allocation strategy of the IPV6 address under the Branching Point mechanism.

13. An information processing method applied to a terminal is characterized by comprising the following steps:

receiving a first IPv6 prefix address and a first interface identifier corresponding to a first UPF allocated by the SMF;

receiving a second IPv6 prefix address corresponding to the second UPF distributed by the SMF;

generating a link local address using the first interface identification;

the first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through a Branching Point mechanism.

14. An information processing method applied to a terminal is characterized by comprising the following steps:

receiving a first IPv6 prefix address and a first interface identifier corresponding to a first UPF allocated by the SMF;

receiving a second IPv6 prefix address and a second interface identifier corresponding to a second UPF allocated by the SMF, and receiving an indication sent by the SMF, wherein the indication is used for indicating that the second interface identifier is an interface identifier corresponding to the second UPF;

selecting a target interface identifier from the first interface identifier and the second interface identifier, and generating a link local address by using the target interface identifier;

the first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through a Branching Point mechanism.

15. An information processing apparatus applied to SMF, comprising: a processor and a transceiver;

the processor is used for not allocating an interface identifier when allocating a second IPv6 prefix address corresponding to a second UPF for the terminal;

wherein, the second UPF is a UPF newly introduced by a Branching Point mechanism in the current PDU session.

16. The apparatus of claim 15,

the transceiver is used for sending session management policy update information to the PCF, wherein the session management policy update information is used for indicating that a Branching Point mechanism needs to be introduced into the current PDU session; and receiving session management policy update feedback information sent by the PCF, wherein the session management policy update feedback information is used for indicating that the SMF does not allocate an interface identifier when allocating a second IPv6 prefix address corresponding to a second UPF to the terminal.

17. The apparatus of claim 15,

the transceiver is further configured to send the second IPv6 prefix address to the terminal.

18. An information processing apparatus applied to SMF, comprising: a processor and a transceiver;

the processor is used for allocating a second interface identifier when allocating a second IPv6 prefix address corresponding to a second UPF for the terminal;

indicating the second interface identifier to the terminal as the interface identifier corresponding to the second UPF;

wherein the second UPF is a UPF newly introduced in the current PDU session through a Branching Point mechanism.

19. The apparatus of claim 18,

the transceiver is used for sending session management policy update information to the PCF, wherein the session management policy update information is used for indicating that a Branching Point mechanism needs to be introduced into the current PDU session;

and receiving session management policy update feedback information sent by the PCF, wherein the session management policy update feedback information is used to indicate that the SMF allocates an interface identifier when allocating a second IPv6 prefix address corresponding to a second UPF to the terminal, and indicate that the allocated interface identifier is an interface identifier corresponding to the second UPF to the terminal.

20. The apparatus of claim 18,

the transceiver is further configured to send the second IPv6 prefix address to the terminal.

21. An information processing apparatus applied to a PCF, comprising: a processor and a transceiver;

the processor is configured to instruct the SMF to not allocate an interface identifier when allocating a second IPv6 prefix address corresponding to the second UPF to the terminal;

and the second UPF is a UPF newly introduced by the SMF in the current PDU session through a Branching Point mechanism.

22. The apparatus of claim 21,

the transceiver is configured to receive session management policy update information sent by the SMF, where the session management policy update information is used to indicate that the SMF needs to introduce a Branching Point mechanism in a current PDU session;

and sending session management policy update feedback information to the SMF, wherein the session management policy update feedback information is used for indicating that the SMF does not allocate an interface identifier when allocating a second IPv6 prefix address corresponding to a second UPF to the terminal.

23. The apparatus of claim 21,

the processor is also used for configuring an allocation strategy of the IPV6 address under the Branching Point mechanism.

24. An information processing apparatus applied to a PCF, comprising: a processor and a transceiver;

the processor is configured to instruct the SMF to allocate an interface identifier when allocating a second IPv6 prefix address corresponding to a second UPF to the terminal, and instruct the allocated interface identifier to the terminal as an interface identifier corresponding to the second UPF;

and the second UPF is a UPF newly introduced by the SMF in the current PDU session through a Branching Point mechanism.

25. The apparatus of claim 24,

the transceiver is configured to receive session management policy update information sent by the SMF, where the session management policy update information is used to indicate that the SMF needs to introduce a Branching Point mechanism in a current PDU session;

and sending session management policy update feedback information to the SMF, wherein the session management policy update feedback information is used for indicating that the SMF allocates an interface identifier when allocating a second IPv6 prefix address corresponding to a second UPF to the terminal, and indicating that the allocated interface identifier is the interface identifier corresponding to the second UPF to the terminal.

26. The apparatus of claim 24,

the processor is also used for configuring an allocation strategy of the IPV6 address under the Branching Point mechanism.

27. An information processing apparatus applied to a terminal, comprising: a processor and a transceiver;

the transceiver is used for receiving a first IPv6 prefix address and a first interface identifier corresponding to a first UPF allocated by the SMF; receiving a second IPv6 prefix address corresponding to the second UPF distributed by the SMF;

the processor is configured to generate a link local address using the first interface identifier;

the first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through a Branching Point mechanism.

28. An information processing apparatus applied to a terminal, comprising: a processor and a transceiver;

the transceiver is used for receiving a first IPv6 prefix address and a first interface identifier corresponding to a first UPF allocated by the SMF; receiving a second IPv6 prefix address and a second interface identifier corresponding to a second UPF allocated by the SMF, and receiving an indication sent by the SMF, wherein the indication is used for indicating that the second interface identifier is an interface identifier corresponding to the second UPF;

the processor is configured to select a target interface identifier from the first interface identifier and the second interface identifier, and generate a link local address by using the target interface identifier;

the first UPF is an existing UPF in the current session, and the second UPF is a UPF newly introduced in the current PDU session through a Branching Point mechanism.

29. A communication device, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,

the processor for reading the program in the memory to implement the steps in the method of any one of claims 1 to 3; or implementing a step in a method as claimed in any one of claims 4 to 6; or implementing a step in a method according to any one of claims 7 to 9; or implementing a step in a method as claimed in any one of claims 10 to 12; or implementing a step in a method as claimed in claim 13; or to implement a step in a method as claimed in claim 14.

30. A computer-readable storage medium for storing a computer program, wherein the computer program, when executed by a processor, implements the steps in the method according to any one of claims 1 to 3; or implementing a step in a method as claimed in any one of claims 4 to 6; or implementing a step in a method according to any one of claims 7 to 9; or implementing a step in a method as claimed in any one of claims 10 to 12; or implementing a step in a method as claimed in claim 13; or to implement a step in a method as claimed in claim 14.

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