CN114363296A

CN114363296A - Address conflict detection method, user plane network element and control plane network element

Info

Publication number: CN114363296A
Application number: CN202011064968.2A
Authority: CN
Inventors: 包宸曦
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2022-04-15
Anticipated expiration: 2040-09-30
Also published as: CN114363296B

Abstract

The application discloses an address conflict detection method, a user plane network element, a control plane network element, a device and a medium, and relates to the technical field of mobile communication. The specific implementation scheme is as follows: after the user plane network element acquires the UE address of the PDU session, the target UE address is inquired in the used UE address, and the target UE address is refused to be used under the condition that the target UE address conflicts with the used UE address. Therefore, when the conflict between the target UE address and the used UE address is determined, the target UE address is refused to be used, the phenomenon of address conflict caused by repeated address allocation is avoided, and the utilization rate of address resources is improved.

Description

Address conflict detection method, user plane network element and control plane network element

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to an address collision detection method, a user plane network element, a control plane network element, an apparatus, and a medium.

Background

Currently, the third Generation Partnership Project (3rd Generation Partnership Project, 3GPP) is conducting a special study on the enhancement of functions of an N4 interface (interface between a Control plane and a user plane, using a Packet Forwarding Control Protocol (PFCP)) in a fifth Generation mobile communication technology (5th-Generation, 5G) network. In the current specification (3GPP TS 29.244), a User Equipment (UE) IP address/prefix may be allocated by a Control Plane (CP) side or a User Plane (UP) side, where the CP side is allocated as a mandatory function and the UP side is allocated as an optional function.

However, the problem of address allocation conflict may be caused by uniformly allocating addresses on the CP side, for example, multiple Session Management Functions (SMFs) on the CP side may be from the same SMF set (without address pool allocation), different SMF sets, different device manufacturers, or even different operators, and SMFs may not be completely interconnected and interworked and data shared. Therefore, the UE IP/prefixes they assign to the same User Plane Function (UPF) may be duplicated and collided.

Disclosure of Invention

The address conflict detection method, the user plane network element, the control plane network element, the device and the medium are used for carrying out conflict detection when the terminal is allocated with the address, and the technical problem that the terminal is repeated or conflicts when the terminal is allocated with the address is solved.

An address collision detection method provided in an embodiment of a first aspect of the present application is used for a user plane network element, and the method includes:

acquiring a target terminal UE address of a protocol data unit PDU session;

inquiring the target UE address in the used UE address;

refusing to use the target UE address in the event that the target UE address conflicts with the used UE address.

Optionally, after querying the target UE address in the list of used UE addresses, the method further includes:

allowing the PDU session using the target UE address and adding the target UE address to the list of used UE addresses if the target UE address is not included in the used UE addresses;

removing the target UE address from the list of used UE addresses at the end of the PDU session.

Optionally, the obtaining the target terminal UE address of the PDU session includes:

receiving a Packet Forwarding Control Protocol (PFCP) session establishment request or a PFCP session modification request sent by a control plane network element, wherein the PFCP session establishment request or the PFCP session modification request carries the target UE address of the PDU session.

Optionally, the rejecting uses the target UE address includes:

and sending a PFCP session establishment response or a PFCP session modification response to the control plane network element, wherein the PFCP session establishment response or the PFCP session modification response carries indication information of address conflict.

Optionally, before the receiving a PFCP session establishment request sent by the control plane network element or a PFCP session modification request, the method further includes:

sending a link message of a PFCP link to the control plane network element, wherein the link message carries information of an available address pool, and the PFCP link is used for bearing the PFCP session;

the available address pool is used for the control plane network element to determine the target UE address;

the link message is a PFCP link establishment request message, or a PFCP link update request message, or a PFCP link establishment response message for responding to the PFCP link establishment request message sent by the control plane network element.

Optionally, before the rejecting uses the target UE address, the method further includes:

updating the number of conflicts; wherein the conflict number is a continuous conflict number of the addresses allocated by the control plane network element;

determining that the number of collisions is less than a number threshold.

Optionally, after the number of update conflicts is counted, the method further includes:

configuring an address isolation area corresponding to the control plane network element when the number of times of collision is greater than or equal to the number threshold; the address isolation area is configured with the used UE address of the control plane network element;

allowing the PDU session to be performed by using the target UE address, and adding the target UE address to a list of used UE addresses of the control plane network element;

and when the PDU session is ended, removing the target UE address from the used UE address of the control plane network element.

An address collision detection method provided in an embodiment of a second aspect of the present application is used for a control plane network element, and the method includes:

providing a target terminal UE address for a user plane network element;

updating the address under the condition that the user plane network element determines that the target UE address conflicts with the used UE address and refuses to use the target UE address;

and reallocating the updated address to the user plane network element.

Optionally, the providing the target terminal UE address to the user plane network element includes:

selecting the target UE address from an address pool;

and sending a Packet Forwarding Control Protocol (PFCP) session establishment request or a PFCP session modification request to the user plane network element, wherein the PFCP session establishment request or the PFCP session modification request carries the target UE address of the PDU session.

Optionally, before selecting the target UE address from the address pool, the method further includes:

receiving a link message of a PFCP link from the user plane network element, wherein the link message carries information of an available address pool, and the PFCP link is used for bearing a PFCP session;

configuring the address pool according to the information of the available address pool;

wherein the link message is a PFCP link establishment request message, or a PFCP link update request message, or a PFCP link establishment response message for responding to the PFCP link establishment request message sent by the control plane network element.

Optionally, the updating the address when the user plane network element determines that the target UE address conflicts with an already used UE address, and the user plane network element rejects to use the target UE address includes:

when the user plane network element determines that the target UE address conflicts with the used UE address, and the user plane network element refuses to use the target UE address, configuring a timer corresponding to the user plane network element for the target UE address;

and taking the address of the timer which is expired or is not configured in the address pool as the updated address.

An embodiment of the third aspect of the present application provides a user plane network element, including a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

acquiring a target terminal UE address of a protocol data unit PDU session;

inquiring the target UE address in the used UE address;

in the case that the target UE address is not included in the list of used UE addresses, allowing the PDU session using the target UE address and adding the target UE address to the list of used UE addresses;

Optionally, the rejecting uses the target UE address includes:

determining that the number of collisions is less than a number threshold.

allowing the PDU session to be carried out by using the target UE address, and adding the target UE address to the used UE address of the control plane network element;

A control plane network element provided in an embodiment of a fourth aspect of the present application includes a memory, a transceiver, and a processor:

providing a target terminal UE address for a user plane network element;

and reallocating the updated address to the user plane network element.

selecting the target UE address from an address pool;

An address collision detection apparatus provided in an embodiment of a fifth aspect of the present application is used for a user plane network element, and includes:

the acquisition module is used for acquiring the target terminal UE address of the protocol data unit PDU session;

the inquiry module is used for inquiring the target UE address in the used UE address;

an allocation module for denying use of the target UE address if the target UE address conflicts with the used UE address.

An address collision detection apparatus provided in an embodiment of a sixth aspect of the present application is used for a control plane network element, and includes:

the processing module is used for providing a target terminal UE address for a user plane network element;

an updating module, configured to update an address when the user plane network element determines that the target UE address conflicts with an already-used UE address, and the user plane network element rejects to use the target UE address;

and the execution module is used for reallocating the updated address to the user plane network element.

A processor-readable storage medium provided in an embodiment of a seventh aspect of the present application stores a computer program, where the computer program is configured to enable the processor to execute the address collision detection method in the embodiment of the first aspect.

A processor-readable storage medium provided in an embodiment of an eighth aspect of the present application stores a computer program, where the computer program is configured to enable the processor to execute the address conflict detection method described in the embodiment of the second aspect.

One embodiment in the above application has the following advantages or benefits: after the user plane network element acquires the UE address of the PDU session, the target UE address is inquired in the used UE address, and the target UE address is refused to be used under the condition that the target UE address conflicts with the used UE address. Therefore, when the conflict between the target UE address and the used UE address is determined, the target UE address is refused to be used, the phenomenon that the conflict exists when the address is used due to repeated address allocation is avoided, and the utilization rate of IP address resources is improved.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present application, nor do they limit the scope of the present application. Other features of the present application will become apparent from the following description.

Drawings

The drawings are included to provide a better understanding of the present solution and are not intended to limit the present application. Wherein:

fig. 1 is a schematic flowchart of an address collision detection method according to an embodiment of the present application;

fig. 2 is a schematic flowchart of an address collision detection method according to a second embodiment of the present application;

fig. 3 is a schematic flowchart of an address collision detection method according to a third embodiment of the present application;

fig. 4 is an interaction diagram of address collision detection according to a fourth embodiment of the present application;

fig. 5 is an interaction diagram of address collision detection according to a fifth embodiment of the present application;

fig. 6 is a schematic flowchart of an address conflict detection method according to a sixth embodiment of the present application;

fig. 7 is a schematic flowchart of an address collision detection method according to a seventh embodiment of the present application;

fig. 8 is an interaction diagram of address collision detection according to an eighth embodiment of the present application;

fig. 9 is a schematic structural diagram of a user plane network element according to a ninth embodiment of the present application;

fig. 10 is a schematic structural diagram of a control plane network element according to a tenth embodiment of the present application;

fig. 11 is a schematic structural diagram of an address collision detection apparatus according to an eleventh embodiment of the present application;

fig. 12 is a schematic structural diagram of an address collision detection apparatus according to a twelfth embodiment of the present application.

Detailed Description

In the embodiment of the present application, the term "and/or" describes an association relationship of associated objects, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides an address conflict detection method, a user plane network element, a control plane network element, a device and a medium, which are used for solving the technical problem that address allocation in a 5G network in the related art may have repetition or conflict.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

Fig. 1 is a flowchart illustrating an address collision detection method according to an embodiment of the present application.

The execution subject of the embodiment of the present application is the address conflict detection apparatus provided by the present application, and the address conflict detection apparatus may be configured in any user plane network element, so that the user plane network element may execute an address allocation function.

The user plane network element refers to a network element for controlling a user plane of a 5G core network.

As shown in fig. 1, the address collision detection method, for a user plane network element, may include the following steps:

step 101, acquiring a target terminal UE address of a protocol data unit PDU session.

A Protocol Data Unit (PDU for short) refers to a Data Unit transmitted between peer layers in a hierarchical network structure. For example, in the Open Systems Interconnection (OSI) model, PDUs will be established at each layer of the transport system.

The terminal UE address refers to an address allocated to the user terminal.

As a possible implementation manner, when the user plane network element receives the PFCP session establishment request sent by the control plane network element, the PFCP session establishment request carries the target UE address of the PDU session, so that the user plane network element can obtain the UE address of the PDU session.

For example, in a 5G network, when the SMF needs to establish a PDU session to the UPF, a PFCP session establishment request carrying a destination UE address of the PDU session may be sent to the UPF, so that a user plane network element may obtain the destination UE address used for the PDU session.

As another possible implementation manner, the user plane network element receives the PFCP session modification request sent by the control plane network element, and the PFCP session modification request carries the destination UE address of the PDU session, so that the user plane network element can obtain the destination UE address used for the PDU session.

For example, in a 5G network, when the SMF needs to modify a PDU session to the UPF, a PFCP session modification request carrying a destination UE address of the PDU session may be sent to the UPF, so that the UPF obtains the destination UE address of the PDU session.

It can be understood that, before sending the PFCP session establishment request carrying the destination UE address of the PDU session to the control plane network element or sending the PFCP session modification request, the user plane network element needs to send a link message of the PFCP link to the control plane network element to establish a PFCP session connection channel, so that the user plane network element can send the PDU session to the control plane network element through the PFCP link.

The link message of the PFCP link sent by the user plane network element to the control plane network element may carry information of the available address pool. And the available address pool is used for the control plane network element to determine the target UE address.

It should be noted that the PFCP link is also referred to as PFCP association in 3GPP related proposals and protocols, and the link message is a PFCP link establishment request message, or a PFCP link update request message, or a PFCP link establishment response message for responding to the PFCP link establishment request message sent by the control plane network element.

For example, the user plane network element may send a PFCP link establishment request message to the control plane network element, and the control plane network element returns a PFCP link establishment response to the user plane network element after receiving the PFCP link establishment request message.

In the embodiment of the present application, the address pool may be configured manually, or may be configured globally and automatically through a network management platform, which is not limited herein.

Step 102, inquiring the target UE address in the used UE address.

The used UE address refers to a UE address that the UE has used.

In the application, after the user plane network element obtains the target UE address of the PDU session, it may query whether the target UE address exists in the used UE address. That is, after acquiring the target UE address of the PDU session, it needs to determine whether there is a conflict between the target UE address and the used UE address.

It is understood that the used UE address may be stored in a used UE address list or a used UE address library, and then, whether a target UE address exists in the used UE address list or the used UE address library is queried to determine whether the target UE address conflicts with the used UE address.

Step 103, refusing to use the target UE address under the condition that the target UE address conflicts with the used UE address.

As a possible scenario of the embodiment of the present application, when querying the target UE address from the used UE addresses, it is determined that the target UE address already exists in the used UE addresses. At this point, it may be determined that the target UE address is already occupied, and there is a conflict between the target UE address and the used UE address, in which case the user plane network element refuses to use the target UE address for the PDU session.

In a possible scenario, when the user plane network element receives a PFCP session establishment request carrying a target UE address of a PDU session sent by the control plane network element, the user plane network element may query the target UE address in the used UE address, and send a PFCP session establishment response carrying indication information of address collision to the control plane network element when determining that the target UE address and the used UE address have collision.

In another possible scenario, when the user plane network element receives a PFCP session modification request carrying a target UE address of a PDU session sent by the control plane network element, the user plane network element may query the target UE address in the used UE address, and send a PFCP session modification response carrying indication information of address collision to the control plane network element when determining that the target UE address and the used UE address have collision.

For example, the indication information of address conflict carried in the PFCP session establishment response or the PFCP session modification response may be "the address is occupied", or the like.

According to the address conflict detection method, after the user plane network element obtains the UE address of the PDU session, the target UE address is inquired in the used UE address, and the target UE address is refused to be used under the condition that the target UE address conflicts with the used UE address. Therefore, when the conflict between the target UE address and the used UE address is determined, the target UE address is refused to be used, the phenomenon that the address use conflicts due to repeated address allocation is avoided, and the utilization rate of IP address resources is improved.

In a possible implementation form of the embodiment of the present application, after the user plane network element queries the target UE address from the used UE addresses, there is a case that the target UE address is not included in the list of the used UE addresses. In this case, it is determined that the target UE address is unoccupied, and the target UE address may be used. The address collision detection method provided in the embodiment of the present application is further described below with reference to the second embodiment.

Fig. 2 is a flowchart illustrating an address collision detection method according to a second embodiment of the present application.

As shown in fig. 2, the address collision detection method is used for a user plane network element, and may further include the following steps:

step 201, acquiring a target terminal UE address of a protocol data unit PDU session.

In step 202, the target UE address is queried among the used UE addresses.

In the embodiment of the present application, the implementation processes of step 201 and step 202 may refer to the implementation processes of step 101 and step 102 in the foregoing embodiment, and are not described herein again.

And 203, in case that the target UE address is not included in the list of used UE addresses, allowing the PDU session using the target UE address, and adding the target UE address to the list of used UE addresses.

In the embodiment of the application, after the user plane network element obtains the target UE address of the PDU session, the target UE address is inquired in the used UE address, the target UE address is determined not to be contained in the list of the used UE address, the target UE address is indicated to be unoccupied, and the target UE address can be used. The user plane network element may send, to the control plane network element, indication information carrying that there is no address conflict, and then allow the PDU session using the target UE address, and add the target UE address to a list of used UE addresses.

It can be understood that, when the user plane network element acquires the UE address of the PDU session again as the target UE address, the target UE address can be queried in the used UE address, thereby avoiding the problem of repeatedly allocating the target UE address.

In a possible scenario, when the user plane network element receives a PFCP session establishment request carrying a target UE address of a PDU session sent by the control plane network element, the user plane network element may query the target UE address in the used UE address, and send a PFCP session establishment response carrying indication information indicating that there is no address conflict to the control plane network element when determining that the used UE address list does not include the target UE address.

In another possible scenario, when the user plane network element receives a PFCP session modification request carrying a target UE address of a PDU session sent by the control plane network element, the user plane network element may query the target UE address in the used UE address, and send a PFCP session modification response carrying indication information indicating that there is no address conflict to the control plane network element when determining that the used UE address list does not include the target UE address.

For example, the indication that there is no conflict for the address may be "the address can be used", "the address is unoccupied", and so on.

At the end of the PDU session, the target UE address is removed from the list of used UE addresses, step 204.

In the embodiment of the application, the user plane network element allows the PDU session according to the target UE address, the target UE address is added into the list of the used UE address, and when the PDU session is ended and the target UE address is not used, the target UE address can be removed from the list of the used UE address, so that the subsequent PDU session can also continue to use the target UE address, and the utilization rate of address resources is improved.

According to the address conflict detection method, after the user plane network element obtains the target terminal UE address of the PDU session, the target UE address is inquired in the used UE address, the PDU session is allowed to be carried out by using the target UE address under the condition that the target UE address is not contained in the list of the used UE address, and the target UE address is added into the list of the used UE address, so that the technical problem that the target UE address is repeatedly distributed is solved, when the PDU session is ended, the target UE address is removed from the list of the used UE address, the target UE address can be continuously used by the subsequent PDU session, and therefore the utilization rate of address resources is improved.

In a possible implementation form of the embodiment of the present application, when the user plane network element determines that the target UE address conflicts with the used UE address, it may determine whether to deny allocation of the target UE address according to the number of conflicts. The address collision detection method provided in the embodiment of the present application is further described below with reference to the third embodiment.

Fig. 3 is a schematic flowchart of an address collision detection method according to a third embodiment of the present application.

As shown in fig. 3, the address collision detection method is used for a user plane network element, and may further include the following steps:

step 301, obtain the target terminal UE address of the PDU session.

Step 302, in the used UE address, the target UE address is queried.

In the embodiment of the present application, the implementation processes of step 301 and step 302 may refer to the implementation processes of step 101 and step 102 in the foregoing embodiment, and are not described herein again.

Step 303, update the number of conflicts.

Wherein, the conflict number is the continuous conflict number of the addresses allocated by the control plane network element. For example, after the user plane network element obtains the target UE address to be allocated for the PDU session, the target UE address is queried in the used UE address, and it is determined that there is a conflict between the target UE address and the used UE address.

In the embodiment of the application, a counter can be set on the user plane network element side to record the number of times of conflict between the target UE address and the used UE address, so that in the process of using the target UE address, the number of times of conflict is increased once every time the allocated target UE address is refused to be used. Thus, the number of collisions is updated in the process of refusing to use the target UE address.

Step 304, determine whether the number of collisions is less than a threshold number of collisions.

The number threshold is a preset number of collisions and is used for rejecting to use the maximum number of collisions of the target UE address.

In the embodiment of the application, in the process of allocating the target UE address to the user plane network element, whether to continuously reject to use the target UE address may be determined according to the number of conflicts between the target UE address and the used UE address.

Step 305, determining the number of collisions is less than the number threshold, and rejecting to use the target UE address.

In one possible case, the user plane network element determines that the number of conflicts between the target UE address and the used UE address is less than a number threshold, and rejects to use the target UE address.

In the embodiment of the present application, the address of the updated PDU session sent by the control plane network element may be obtained again when the user plane network element rejects the target UE address.

And step 306, configuring the address isolation region corresponding to the control plane network element when the number of times of collision is greater than or equal to the number threshold.

And the address isolation area is configured with the used UE address of the control plane network element.

In another possible case, in order to avoid the problem that the target UE address is occupied and is continuously rejected for multiple times during address allocation, which leads to increased signaling load and increased service delay, when the user plane network element determines that the number of times of conflict between the target UE address and the used UE address is greater than or equal to the number threshold, the user plane network element does not reject to use the target UE address any more.

In the embodiment of the present application, when the number of times of collision is greater than or equal to the number threshold, the address isolation region corresponding to the control plane Network element may be configured through a port, a Virtual Local Area Network (VLAN), a Virtual machine, a container, and other technologies.

It should be noted that the address isolation area is configured with the used UE address of the control plane network element. When the user plane network element has a plurality of address isolation regions, each address isolation region is configured with a respective used UE address.

Step 307, the PDU session is allowed to use the target UE address, and the target UE address is added to the list of the used UE addresses of the control plane network element.

In the embodiment of the application, after the address isolation region corresponding to the control plane network element is configured, the PDU session is allowed to be carried out by using the target UE address.

It should be noted that, after the PDU session is allowed to be performed by using the target UE address, the target UE address needs to be added to the list of the used UE addresses of the control plane network element, so as to avoid the technical problem of address allocation conflict caused by repeated allocation of the target UE address.

And 308, removing the target UE address from the list of the used UE addresses of the control plane network element when the PDU session is ended.

In the embodiment of the application, the user plane network element allows the target UE address to be used for PDU conversation, the target UE address is added into the list of the used UE address, and when the PDU conversation is finished and the target UE address is not used, the target UE address can be moved out of the list of the used UE address, so that the subsequent PDU conversation can also continue to use the target UE address, and the utilization rate of address resources is improved.

The address conflict detection method of the embodiment of the application comprises the steps that after a user plane network element obtains a target terminal UE address of a PDU session, the target UE address is inquired in a used UE address, the conflict frequency is updated under the condition that the target UE address conflicts with the used UE address, the conflict frequency is determined to be smaller than a frequency threshold value, the target UE address is refused to be used, an address isolation area corresponding to a control plane network element is configured under the condition that the conflict frequency is larger than or equal to the frequency threshold value, the target UE address is allowed to be used for address allocation of the PDU session, the target UE address is added to a list of the used UE address of the control plane network element, and when the PDU session is ended, the target UE address is removed from the list of the used UE address of the control plane network element. Therefore, the problems of increased signaling load, increased service delay and the like caused by the fact that the target UE address is occupied and continuously rejected for multiple times during address allocation are solved, and in addition, the utilization rate of address resources is favorably improved.

As an example, referring to fig. 4, fig. 4 is an interaction diagram of address collision detection provided in the fourth embodiment of the present application.

As shown in fig. 4, the address collision detection method may include the following steps:

step 401, the user plane network element sends a link message of the PFCP link to the control plane network element.

The link message carries information of an available address pool, and the PFCP link is used for carrying a PFCP session. The link message is a PFCP link establishment request message, or a PFCP link update request message, or a PFCP link establishment response message for responding to the PFCP link establishment request message sent by the control plane network element.

It can be understood that the user plane network element sends a link message of the PFCP link to the control plane network element to establish a PFCP session connection channel, so that the user plane network element can send the PFCP session to the control plane network element through the PFCP link.

Step 402, the user plane network element receives a PFCP session establishment request or a PFCP session modification request sent by the control plane network element.

The PFCP session establishment request or the PFCP session modification request carries the destination UE address of the PDU session.

In the embodiment of the application, the user plane network element may obtain the target UE address of the PDU session after receiving the PFCP session establishment request or the PFCP session modification request sent by the control plane network element.

In step 403, the user plane network element queries the target UE address from the used UE addresses.

In the application, after the user plane network element obtains the target UE address to be allocated for the PDU session, it may query whether the target UE address exists in the used UE address. That is, after acquiring the target UE address to be allocated for the PDU session, it needs to determine whether there is a conflict between the target UE address and the used UE address.

In step 404, the user plane network element determines to refuse to use the target UE address when the target UE address conflicts with the used UE address.

As a possible scenario of the embodiment of the present application, when querying the target UE address from the used UE addresses, it is determined that the target UE address already exists in the used UE addresses. At this time, it may be determined that the target UE address is already occupied, and there is a conflict between the target UE address and the used UE address, in which case the user plane network element rejects the PDU session using the target UE address.

Step 405, the user plane network element sends a PFCP session establishment response or a PFCP session modification response to the control plane network element.

And the PFCP session establishment response or the PFCP session modification response carries indication information of address conflict.

Step 406, the user plane network element updates the collision times.

Step 407, the user plane network element configures an address isolation area corresponding to the control plane network element when determining that the number of collisions is greater than or equal to the number threshold.

Step 408, the PDU session is allowed to use the target UE address, and the target UE address is added to the list of the used UE addresses of the control plane network element.

Step 409, when the PDU session is finished, the target UE address is removed from the list of the used UE addresses of the control plane network element.

In the embodiment of the present application, the implementation process of step 407 to step 409 may refer to the implementation process of step 306 to step 308 in the above embodiment, and details are not described here.

The address conflict detection method of the embodiment of the application sends a link message of a PFCP link to a control plane network element through a user plane network element, receives a PFCP session establishment request carrying a target UE address to be allocated for a PDU session or a PFCP session modification request sent by the control plane network element, inquires the target UE address in a used UE address, refuses to use the target UE address under the condition that the target UE address conflicts with the used UE address, and sends a PFCP session establishment response carrying an indication message of address conflict or a PFCP session modification response to the control plane network element. Therefore, when the address of the UE to be allocated in the PDU session conflicts with the address in the used UE address list, the target UE address is refused to be used, and the technical problem of address allocation conflict is avoided. And the user plane network element determines that the conflict times are less than a time threshold value, refuses to use the target UE address, configures an address isolation area corresponding to the control plane network element when the conflict times are greater than or equal to the time threshold value, allows the target UE address to be used for PDU conversation, adds the target UE address to a list of used UE addresses of the control plane network element, and removes the target UE address from the list of the used UE addresses of the control plane network element when the PDU conversation is finished. Therefore, the problems of increased signaling load, increased service delay and the like caused by the fact that the target UE address is occupied and continuously rejected for multiple times during address allocation are solved, and in addition, the utilization rate of address resources is favorably improved.

As an example, referring to fig. 5, fig. 5 is an interaction diagram of address collision detection provided in embodiment five of the present application.

As shown in fig. 5, the address collision detection method may include the following steps:

step 501, the user plane network element sends a link message of the PFCP link to the control plane network element.

Step 502, the user plane network element receives a PFCP session establishment request or a PFCP session modification request sent by the control plane network element.

Step 503, the user plane network element queries the target UE address from the used UE address.

In step 504, the user plane network element determines that the target UE address is not included in the list of used UE addresses, and allows the PDU session using the target UE address, and adds the target UE address to the list of used UE addresses.

In the embodiment of the present application, the implementation process of step 504 may refer to the implementation process of step 203 in the second embodiment, which is not described herein again.

Step 505, the user plane network element sends a PFCP session establishment response or a PFCP session modification response to the control plane network element.

And the PFCP session establishment response or the PFCP session modification response carries indication information of successful address allocation.

In a possible scenario, when a user plane network element receives a PFCP session establishment request carrying a target UE address of a PDU session sent by a control plane network element, the user plane network element queries the target UE address from a used UE address, determines that the target UE address is not included in a list of the used UE addresses, allows the user plane network element to use the target UE address to perform the PDU session, and sends a PFCP session establishment response carrying indication information of successful address allocation to the control plane network element.

In another possible scenario, when the user plane network element receives a PFCP session modification request carrying a target UE address of a PDU session sent by the control plane network element, the user plane network element queries the target UE address from the used UE address, determines that the target UE address is not included in the list of the used UE addresses, allows the PDU session to be performed using the target UE address, and sends a PFCP session modification response carrying indication information of successful address allocation to the control plane network element.

At the end of the PDU session, the target UE address is removed from the list of used UE addresses, step 506.

In the embodiment of the present application, the implementation process of step 506 may refer to the implementation process of step 204 in the second embodiment, which is not described herein again.

The address conflict detection method of the embodiment of the application sends a link message of a PFCP link to a control plane network element through a user plane network element, the user plane network element receives a PFCP session establishment request or a PFCP session modification request sent by the control plane network element, the user plane network element inquires a target UE address in a used UE address, and allows the target UE address to be used for PDU session under the condition that the target UE address is not contained in a list of the used UE address, and adds the target UE address to the list of the used UE address, thereby avoiding the problem that the target UE address is repeatedly allocated.

In order to implement the foregoing embodiments, the embodiments of the present application provide an address conflict detection method.

Fig. 6 is a schematic flowchart of an address collision detection method according to a sixth embodiment of the present application.

The execution main body of the embodiment of the present application provides the address conflict detection apparatus, which can be configured in any control plane network element, so that the control plane network element executes an address allocation function.

As shown in fig. 6, the address collision detection method, for a control plane network element, may include the following steps:

step 601, providing the target terminal UE address to the user plane network element.

In the embodiment of the present application, after receiving a link message of a PFCP link from a user plane network element, a control plane network element may establish a PFCP session connection channel, so that the user plane network element may send a PDU session to the control plane network element through the PFCP link. The link message carries information of an available address pool, and the PFCP link is used for carrying a PFCP session.

In a possible scenario, the control plane network element sends a PFCP session establishment request carrying a target UE address of the PDU session to the user plane network element, so that the control plane network element can provide the target UE address to the user plane network element.

In another possible scenario, the control plane network element sends a PFCP session modification request carrying a target UE address to be allocated for the PDU session to the user plane network element, so that the control plane network element can provide the target UE address to the user plane network element.

Step 602, when the user plane network element determines that the target UE address conflicts with the used UE address, and the user plane network element rejects to use the target UE address, the address is updated.

In the embodiment of the application, after the control plane network element provides the target UE address to the user plane network element, the user plane network element queries the target UE address from the used UE address, and the user plane network element refuses to use the target UE address when determining that the target UE address conflicts with the used UE address. In this case, the control plane network element may re-provide the address to the user plane network element for updating the target UE address.

As a possible implementation manner, when the user plane network element determines that the target UE address conflicts with the used UE address, and the user plane network element rejects to use the target UE address, the control plane network element may configure a timer of the corresponding user plane network element for the target UE address, and use an address of the timer that has expired or is not configured in the address pool as the updated address.

For example, assuming that the timer of the user plane network element corresponding to the target UE address is set to 15 minutes, when the user plane network element determines that the target UE address conflicts with the used UE address, the target UE address may not be allocated within 15 minutes, and the address of the timer in the address pool that has expired or is not configured may be used as the updated address.

Optionally, after the control plane network element provides the target UE address to the user plane network element, the user plane network element determines that the number of consecutive conflicts is smaller than the number threshold when determining that the target UE address conflicts with the used UE address, and then rejects to use the target UE address. Wherein, the conflict number is the continuous conflict number of the addresses allocated by the control plane network element.

Optionally, after the control plane network element provides the target UE address to be allocated to the user plane network element, when the user plane network element determines that the target UE address conflicts with the used UE address, and determines that the number of consecutive conflicts is greater than or equal to the number threshold, an address isolation area corresponding to the control plane network element is configured, the PDU session is allowed to be performed using the target UE address, the target UE address is added to a list of the used UE addresses of the control plane network element, and when the PDU session is ended, the target UE address is removed from the list of the used UE addresses of the control plane network element.

Step 603, re-allocating the updated address to the user plane network element.

In the embodiment of the present application, after the control plane network element updates the address used for the PDU session, the updated address may be newly allocated to the user plane network element.

In the address conflict detection method in the embodiment of the application, the control plane network element provides the target terminal UE address to the user plane network element, updates the address when the user plane network element determines that the target UE address conflicts with the used UE address, and the user plane network element rejects to use the target UE address, and reallocates the updated address to the user plane network element. Therefore, under the condition that the target UE address conflicts with the used UE address, the control plane network element distributes the updated address to the user plane network element again, and the technical problem of conflict existing in the address distribution process is solved.

In another possible implementation form of the embodiment of the present application, after the control plane network element provides the target UE address to the user plane network element, when the user plane network element determines that the list of used UE addresses does not include the target UE address, the PDU session is allowed to be performed using the target UE address, and the target UE address is added to the list of used UE addresses. And the user plane network element sends a PFCP session establishment response or a PFCP session modification response to the control plane network element, wherein the PFCP session establishment response or the PFCP session modification response carries indication information of successful address allocation. At the end of the PDU session, the target UE address is removed from the list of used UE addresses, thereby facilitating increased utilization of address resource allocation.

In a possible implementation form of the present application, when the control plane network element provides the target UE address to the user plane network element in step 601, the target UE address may be selected from a pre-configured address pool, and then, a PFCP session establishment request or a PFCP session modification request carrying the target UE address of the PDU session is sent to the user plane network element, so that the user plane network element obtains the target UE address of the PDU session. Next, a detailed description is given in conjunction with the seventh embodiment, and fig. 7 is a schematic flowchart of an address conflict detection method provided in the seventh embodiment of the present application.

As shown in fig. 7, the step 601 may further include the following steps:

step 701, receiving a link message of a PFCP link from a user plane network element.

The link message carries information of an available address pool, and the PFCP link is used for carrying PFCP sessions.

In the embodiment of the present application, before the control plane network element and the user plane network element establish the PFCP session, a PFCP session connection channel needs to be established, so that the control plane network element may send a PFCP session establishment request or a PFCP session modification request to the user plane network element through a PFCP link to establish the PDU session.

Optionally, the link message is a PFCP link establishment request message, or a PFCP link update request message, or a PFCP link establishment response message for responding to the PFCP link establishment request message sent by the control plane network element.

In a possible scenario, when a PFCP link needs to be established between a user plane network element and a control plane network element, the control plane network element may send a PFCP link establishment request message to the user plane network element.

In another possible scenario, when the PFCP link needs to be updated between the user plane network element and the control plane network element, the control plane network element may send a PFCP link update request message to the user plane network element.

In another possible scenario, when a PFCP link needs to be established between the user plane network element and the control plane network element, the control plane network element may send a PFCP link establishment request message to the user plane network element, and after receiving the PFCP link establishment request message, the user plane network element responds to the PFCP link establishment request message to return a PFCP link establishment response message to the control plane network element.

Step 702, configuring an address pool according to the information of the available address pool.

In this embodiment, after receiving a message carrying an available address pool of a PFCP link from a user plane network element, a control plane network element may configure the address pool according to the message of the available address pool.

It should be noted that, when configuring the address pool according to the message of the available address pool, the control plane network element may be manually configured, may be configured globally and automatically in a unified manner by the network management platform, and may also be configured in other manners, which is not limited herein. The configured address pool may be stored in the control plane network element, or may be stored in an external server, which is not limited herein.

Step 703, select the target UE address from the address pool.

Step 704, sending a PFCP session establishment request or a PFCP session modification request to the user plane network element.

In this embodiment of the present application, the control plane network element may send a PFCP session establishment request or a PFCP session modification request to the user plane network element through the established PFCP link.

In a possible case, when a PFCP session needs to be established between the control plane network element and the user plane network element, the control plane network element may send a PFCP session establishment request carrying a destination UE address of the PDU session to the user plane network element. And then, after the user plane network element acquires the target UE address of the PDU session, determining whether the target UE address conflicts with the used UE address so as to determine whether to use the acquired target UE address.

In another possible case, when the PFCP session needs to be modified between the control plane network element and the user plane network element, the control plane network element may send a PFCP session modification request carrying the destination UE address of the PDU session to the user plane network element. And then, after the user plane network element acquires the target UE address of the PDU session, determining whether the target UE address conflicts with the used UE address so as to determine whether to use the acquired target UE address.

In the address conflict detection method of the embodiment of the application, after receiving a link message of a PFCP link from a user plane network element, a control plane network element configures an address pool according to information of an available address pool, selects a target UE address from the address pool, and sends a PFCP session establishment request carrying the target UE address of a PDU session or a PFCP session modification request to the user plane network element. Therefore, the control plane network element sends the target UE address of the PDU session to the user plane network element according to the established PFCP link, so that the user plane network element judges whether the acquired target UE address conflicts with the used UE address or not, and determines whether the target UE address is used or not, and the technical problem of conflict in address allocation is avoided.

As an example, referring to fig. 8, fig. 8 is an interaction schematic diagram of address collision detection provided in an eighth embodiment of the present application.

As shown in fig. 8, the address collision detection method may include the following steps:

step 801, the user plane network element sends a link message of the PFCP link to the control plane network element.

The link message carries information of an available address pool, and the PFCP link is used for carrying PFCP sessions. The link message is a PFCP link establishment request message, or a PFCP link update request message, or a PFCP link establishment response message for responding to the PFCP link establishment request message sent by the control plane network element.

And step 802, the control plane network element configures the address pool according to the information of the available address pool.

Step 803, the control plane network element selects the target UE address from the address pool.

Step 804, the control plane network element sends a PFCP session establishment request or a PFCP session modification request to the user plane network element.

Step 805, after receiving the target UE address of the PDU session, the user plane network element determines that the target UE address conflicts with the used UE address, and the user plane network element rejects to use the target UE address.

In step 806, the user plane network element sends a PFCP session establishment response or a PFCP session modification response to the control plane network element.

In step 807, the control plane network element updates the address.

Step 808, the control plane network element re-allocates the updated address to the user plane network element.

It should be noted that, for specific implementation processes of steps 801 to 808 in the embodiment of the present application, reference may be made to implementation processes of the sixth embodiment and the seventh embodiment, and details are not described herein again.

The technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, the applicable system may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a long term evolution (long term evolution, LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an LTE-a (long term evolution) system, a universal mobile system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Mobile Access (WiMAX) system, a New Radio network (NR 5) system, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

In order to implement the above embodiments, the present application provides a user plane network element.

Fig. 9 is a schematic structural diagram of a user plane network element according to a ninth embodiment of the present application.

As shown in fig. 9, the user plane network element may include: memory 110, transceiver 120, and processor 130.

A memory 110 for storing a computer program; a transceiver 120 for transceiving data under the control of the processor 130; a processor 130 for reading the computer program in the memory 110 and performing the following operations: acquiring a target terminal UE address of a protocol data unit PDU session; inquiring a target UE address in the used UE addresses; in case the target UE address conflicts with the used UE address, the target UE address is rejected for use.

A transceiver 120 for receiving and transmitting data under the control of the processor 130.

Where in fig. 10, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 130, and various circuits of memory, represented by memory 110, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 120 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like.

The processor 130 is responsible for managing the bus architecture and general processing, and the memory 110 may store data used by the processor 130 in performing operations.

The processor 130 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

In one possible implementation form of the present application, after querying the target UE address from the used UE addresses, the method may further include: under the condition that the target UE address is not contained in the list of the used UE addresses, the target UE address is allowed to be used for carrying out PDU conversation, and the target UE address is added into the list of the used UE addresses; at the end of the PDU session, the target UE address is removed from the list of used UE addresses.

In another possible implementation form of the present application, obtaining the target terminal UE address of the PDU session may include: receiving a data Packet Forwarding Control Protocol (PFCP) session establishment request or a PFCP session modification request sent by a control plane network element, wherein the PFCP session establishment request or the PFCP session modification request carries a target UE address of a Protocol Data Unit (PDU) session.

In another possible implementation form of the present application, after rejecting the use of the target UE address, the method may further include: and sending a PFCP session establishment response or a PFCP session modification response to the control plane network element, wherein the PFCP session establishment response or the PFCP session modification response carries indication information of address conflict.

In another possible implementation form of the present application, before receiving the PFCP session establishment request or the PFCP session modification request sent by the control plane network element, the method may further include: sending a link message of a PFCP link to a control plane network element, wherein the link message carries information of an available address pool, and the PFCP link is used for bearing a PFCP session; the available address pool is used for the control plane network element to determine a target address of the UE; the link message is a PFCP link establishment request message, or a PFCP link update request message, or a PFCP link establishment response message for responding to the PFCP link establishment request message sent by the control plane network element.

In another possible implementation form of the present application, before rejecting the use of the target UE address, the method may further include: updating the number of conflicts; wherein, the conflict times are the continuous conflict times of the addresses distributed by the control plane network element; determining that the number of collisions is less than a number threshold.

In another possible implementation form of the present application, after updating the number of conflicts, the method may further include: configuring an address isolation area corresponding to the control plane network element under the condition that the number of times of conflict is greater than or equal to a number threshold; the address isolation area is configured with a control plane network element used UE address; allowing the PDU session to be carried out by using the target UE address, and adding the target UE address into a list of the used UE addresses of the control plane network element; at the end of the PDU session, the target UE address is removed from the list of the control plane network element used UE addresses.

It should be noted that, the user plane network element provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiments in fig. 1 to fig. 3, and can achieve the same technical effect, and details of the same parts and beneficial effects as those of the method embodiments in this embodiment are not described herein again.

In order to implement the foregoing embodiments, the present application provides a control plane network element.

Fig. 10 is a schematic structural diagram of a control plane network element provided in this embodiment.

As shown in fig. 10, the control plane network element may include: memory 210, transceiver 220, and processor 230.

Wherein, the memory 210 is used for storing the computer program; a transceiver 220 for transceiving data under the control of the processor 230; a processor 230 for reading the computer program in the memory 210 and performing the following operations: providing a target terminal UE address for a user plane network element; updating the address under the condition that the user plane network element determines that the target UE address conflicts with the used UE address and refuses to use the target UE address; and re-allocating the updated address to the user plane network element.

In a possible implementation form of the present application, providing a target terminal UE address to a user plane network element may include: selecting a target UE address from an address pool; and sending a data Packet Forwarding Control Protocol (PFCP) session establishment request or a PFCP session modification request to the user plane network element, wherein the PFCP session establishment request or the PFCP session modification request carries a target UE address to be allocated for the PDU session.

In another possible implementation form of the present application, before selecting the target UE address from the address pool, the method may further include: receiving link information of a PFCP link from a user plane network element, wherein the link information carries information of an available address pool, and the PFCP link is used for bearing a PFCP session; configuring an address pool according to the information of the available address pool; the link message is a PFCP link establishment request message, or a PFCP link update request message, or a PFCP link establishment response message for responding to the PFCP link establishment request message sent by the control plane network element.

In another possible implementation form of the present application, when the user plane network element determines that the target UE address conflicts with the used UE address, and the user plane network element rejects to use the target UE address, the address updating may include: under the condition that the user plane network element determines that the target UE address conflicts with the used UE address and the user plane network element refuses to use the target UE address, configuring a timer corresponding to the user plane network element for the target UE address; and taking the address of the timer in the address pool which has expired or is not configured with the timer as the updated address.

It should be noted that, the user plane network element provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiments in fig. 6 to fig. 7, and can achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiments in this embodiment are not repeated herein.

In order to implement the foregoing embodiments, an address conflict detection apparatus is provided in the embodiments of the present application.

Fig. 11 is a schematic structural diagram of an address collision detection apparatus according to an eleventh embodiment of the present application.

As shown in fig. 11, the address collision detection apparatus 300, for a user plane network element, may include: an acquisition module 310, a query module 320, and an assignment module 330.

The obtaining module 310 is configured to obtain a target terminal UE address of a PDU session.

And a query module 320, configured to query the target UE address among the used UE addresses.

An allocating module 330, configured to refuse to use the target UE address in a case that the target UE address conflicts with the used UE address.

In one possible implementation form of the present application, the address conflict detection apparatus 300 may further include:

an adding module, configured to allow a PDU session to be performed using a target UE address and add the target UE address to a list of used UE addresses, if the list of used UE addresses does not include the target UE address;

a removal module for removing the target UE address from the list of used UE addresses at the end of the PDU session.

In another possible implementation form of the present application, the obtaining module 310 may further be configured to:

receiving a data Packet Forwarding Control Protocol (PFCP) session establishment request or a PFCP session modification request sent by a control plane network element, wherein the PFCP session establishment request or the PFCP session modification request carries a target UE address to be allocated for a PDU session.

In another possible implementation form of the present application, the allocating module 330 may further be configured to:

In another possible implementation form of the present application, the address allocating apparatus 300 may further include:

a sending module, configured to send a link message of a PFCP link to a control plane network element, where the link message carries information of an available address pool, and the PFCP link is used to carry the PFCP session;

In another possible implementation form of the present application, the address collision detection apparatus 300 may further include:

the updating module is used for updating the conflict times; wherein, the conflict number is the continuous conflict number of the addresses allocated by the control plane network element.

And the determining module is used for determining that the number of times of conflict is less than a time threshold value.

a configuration module, configured to configure an address isolation region corresponding to the control plane network element when the number of collisions is greater than or equal to a number threshold; the address isolation area is configured with a control plane network element used UE address;

an adding module, configured to allow a PDU session to be performed using a target UE address, and add the target UE address to a list of used UE addresses of a control plane network element;

and the removing module is used for removing the target UE address from the list of the used UE addresses of the control plane network element when the PDU session is ended.

It should be noted that, the address conflict detection apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiments shown in fig. 1 to fig. 3, and can achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiments in this embodiment are not repeated herein.

In order to implement the foregoing embodiments, another address collision detection apparatus is provided in the embodiments of the present application.

As shown in fig. 12, the address collision detection apparatus 400 is used for a control plane network element, and may include: a processing module 410, an updating module 420, and an executing module 430.

The processing module 410 is configured to provide the target terminal UE address to the user plane network element.

An updating module 420, configured to update the address when the user plane network element determines that the target UE address conflicts with the used UE address, and the user plane network element rejects to use the target UE address.

And an executing module 430, configured to reassign the updated address to the user plane network element.

In one possible implementation form of the present application, the processing module 410 may further be configured to:

selecting a target UE address from an address pool;

and sending a Packet Forwarding Control Protocol (PFCP) session establishment request or a PFCP session modification request to the user plane network element, wherein the PFCP session establishment request or the PFCP session modification request carries the target UE address to be allocated for the PDU session.

In another possible implementation form of the present application, the address conflict detection apparatus 400 may further include:

a receiving module, configured to receive a link message of a PFCP link from a user plane network element, where the link message carries information of an available address pool, and the PFCP link is used to carry a PFCP session;

the configuration module is used for configuring the address pool according to the information of the available address pool;

In another possible implementation form of the present application, the updating module 420 may further be configured to:

under the condition that the user plane network element determines that the target UE address conflicts with the used UE address and the user plane network element refuses to use the target UE address, configuring a timer corresponding to the user plane network element for the target UE address;

It should be noted that, the address conflict detection apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiments in fig. 6 to fig. 7, and can achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiments in this embodiment are not repeated herein.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

In order to implement the above embodiments, the present application also proposes a processor-readable storage medium.

The processor-readable storage medium stores a computer program, and the computer program is configured to enable the processor to execute the address collision detection method according to the embodiments of fig. 1 to 3.

The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), among others.

To implement the above embodiments, the present application also proposes another processor-readable storage medium.

The processor-readable storage medium stores a computer program for causing the processor to execute the address collision detection method according to the embodiments of fig. 6 and 7.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An address collision detection method, wherein the method is used for a user plane network element, and the method comprises:

acquiring a target terminal UE address of a protocol data unit PDU session;

inquiring the target UE address in the used UE address;

2. The method of claim 1, wherein after querying the target UE address from the used UE addresses, the method further comprises:

3. The method of claim 1, wherein the obtaining the target UE address of the PDU session comprises:

4. The address collision detection method according to claim 3, wherein after the rejecting the target UE address, further comprising:

5. The address conflict detection method according to claim 3, wherein before receiving the PFCP session establishment request or the PFCP session modification request sent by the control plane network element, the method further comprises:

6. The address collision detection method according to any of claims 1-5, wherein before rejecting use of the target UE address, further comprising:

determining that the number of collisions is less than a number threshold.

7. The address collision detection method according to claim 6, wherein after the number of update collisions, further comprising:

and when the PDU session is ended, removing the target UE address from the list of the used UE addresses of the control plane network element.

8. An address collision detection method, wherein the method is used for a control plane network element, and the method comprises:

providing a target terminal UE address for a user plane network element;

and reallocating the updated address to the user plane network element.

9. The method of claim 8, wherein the providing the target terminal UE address to the user plane network element comprises:

selecting the target UE address from an address pool;

10. The method of claim 9, wherein before selecting the target UE address from the address pool, the method further comprises:

11. The address collision detection method according to any one of claims 8 to 10, wherein in a case where the user plane network element determines that the target UE address collides with a used UE address and the user plane network element rejects the use of the target UE address, updating the address comprises:

12. A user plane network element comprising a memory, a transceiver, a processor:

acquiring a target terminal UE address of a protocol data unit PDU session;

inquiring the target UE address in the used UE address;

13. The user plane network element of claim 12, wherein after querying the target UE address from the used UE address, further comprising:

14. The user plane network element of claim 12, wherein obtaining the target terminal UE address of the PDU session comprises:

15. The user plane network element of claim 14, wherein after said denying use of said target UE address, further comprising:

16. The user plane network element of claim 14, wherein before receiving the PFCP session establishment request or the PFCP session modification request sent by the control plane network element, the method further comprises:

wherein, the available address pool is used for the control plane network element to determine the UR target address;

17. The user plane network element of any of claims 12 to 16, wherein, prior to said rejecting use of said target UE address, further comprising:

determining that the number of collisions is less than a number threshold.

18. The user plane network element of claim 17, wherein after the number of update conflicts, further comprising:

19. A control plane network element, comprising a memory, a transceiver, a processor:

providing a target terminal UE address for a user plane network element;

and reallocating the updated address to the user plane network element.

20. The control plane network element of claim 19, wherein said providing the target terminal UE address to the user plane network element comprises:

selecting the target UE address from an address pool;

21. The control plane network element of claim 20, wherein before the selecting the target UE address from the address pool, further comprising:

22. The control plane network element of any of claims 19 to 21, wherein in case the user plane network element determines that the target UE address conflicts with a used UE address and the user plane network element rejects the use of the target UE address, updating the address comprises:

23. An address collision detection apparatus, wherein the apparatus is for a user plane network element, comprising:

24. An address collision detection apparatus, wherein the apparatus is used for a control plane network element, and comprises:

an updating module, configured to update an address when the user plane network element determines that the target UE address conflicts with an already-used UE address, and the user plane network element uses the target UE address;

25. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to execute the address collision detection method of any one of claims 1 to 7.

26. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to execute the address collision detection method according to any one of claims 8 to 11.