CN110035040B

CN110035040B - Method and device for signaling addressing

Info

Publication number: CN110035040B
Application number: CN201810032041.7A
Authority: CN
Inventors: 陈旭; 姜怡; 宋月
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2018-01-12
Filing date: 2018-01-12
Publication date: 2021-11-16
Anticipated expiration: 2038-01-12
Also published as: CN113645254B; CN110035040A; CN113645254A

Abstract

The invention provides a signaling addressing method and a signaling addressing device, which are used for solving the problem that in the prior art, when an IMS (IP multimedia subsystem) network and a third-party application platform simultaneously provide services for a 4G user and a 5G user, session binding data of the users cannot be accurately acquired and policy control function entity addressing is carried out. In the embodiment of the invention, a service session control function entity acquires user attributes from a unified data management entity; the IMS proxy session control function entity accurately sends the application service request to the 4G policy control function entity or the 5G policy control function entity according to the user attribute of the terminal, the network capability open function entity or the DRA determines that the terminal sends a session binding data query request according to the determined identifier, and sends an interface session request to the 4G policy control function or the 5G policy control function according to the returned query result, so that the session binding data of the user can be accurately obtained under the scene of coexistence of 4G/5G networks, and addressing of the 4G policy control function entity and the 5G policy control function entity can be respectively carried out.

Description

Method and device for signaling addressing

Technical Field

The present invention relates to the core network technology field, and in particular, to a method and an apparatus for signaling addressing.

Background

The 4G network PCC (Policy and Charging Control) requires that Gx and Rx interface sessions of the same user are bound on the same PCRF (Policy and Charging Rules Function). When a plurality of PCRF are deployed, DRA (Diameter Routing Agent, Diameter Routing Agent node) is needed to implement session binding, and a binding relationship (i.e., session binding information) between a user code number, an IP (Internet Protocol, Protocol for interconnection between networks) address, and a PCRF address is stored. Wherein, Gx interface adopts user code number addressing, Rx interface adopts user IP address addressing, and DRA is needed to find PCRF according to session binding information. Similar to the Session binding requirements of Gx and Rx interfaces of a 4G core Network, N7 and N5, Rx interface signaling related to a PDN (Packet Data Network) Session of the same user in a 5G core Network need to be addressed to the same PCF, where N7 is an interface between SMF-PCFs, N5 and Rx are interfaces between AF-PCFs, and SMF (Session Management Function) is similar to PGW (PDN GateWay, Packet Data Network GateWay) of the 4G Network; the PCF (Policy Control Function) is similar to the PCRF of the 4G network.

The AF (Application function) has two types, one is Vo IMS (IP Multimedia Subsystem) voice service defined by the 3GPP standard for the IMS network element inside the operator, and triggers the core network to perform voice service policy control, establish a dedicated bearer for the voice, and ensure the voice service quality. The other is an external service application platform which provides service for data service application, triggers a core network to carry out policy control on the data service application opened to a third party by an operator, establishes a special bearer for the application service and ensures the service quality. In the international standard, a new Function, namely a BSF (Binding Support Function), is introduced for signaling addressing of Rx interfaces of two types of AFs to implement session Binding, and for an application scenario of a second type of AF, Network security is considered, a NEF (Network Exposure Function) is introduced into a 5G core Network to open services and capabilities to a third party, and an external service application platform AF needs to access the 5G Network through the NEF.

However, the IMS network and the third party application platform in the prior art are not specific to the home 4G network or the 5G network, but are common to both 4G and 5G networks. When 4G and 5G networks coexist and the IMS network and the third-party application platform provide services for 4G users and 5G users at the same time, it is impossible to know whether the session binding Data of the user is in DRA or BSF (Unified Data Repository) or UDR (Unified Data Repository).

Disclosure of Invention

The invention provides a signaling addressing method, which is used for solving the problem that in the prior art, when an IMS network and a third-party application platform simultaneously provide services for 4G users and 5G users, session binding data of the users cannot be accurately acquired and policy control function entity addressing is carried out.

The invention provides a method for addressing signaling, which comprises the following steps:

an IMS proxy session control function entity establishes an IMS session;

and when the IMS proxy session control function entity establishes an IMS session, determining to send an application service request to the 4G policy control function entity or the 5G policy control function entity according to the user attribute.

the service session control function entity obtains the user attribute from the unified data management entity;

and the service session control function entity sends the user attribute to a proxy session control function entity.

The invention provides a signaling addressed IMS proxy session control function entity, which comprises: a processor and a transceiver:

the processor is configured to establish an IMS session: and when the IMS session is established, determining to send an application service request to the 4G policy control function entity or the 5G policy control function entity according to the user attribute.

The invention provides a service session control function entity addressed by signaling, which comprises: a processor and a transceiver:

the processor is used for acquiring the user attribute from the unified data management entity; and sending the user attribute to a proxy session control function entity.

In the embodiment of the invention, a unified data management entity determines the user attribute of a terminal according to the network type of the terminal, sends user subscription data containing the terminal user attribute to an IMS proxy session control function entity during terminal registration, determines the user attribute of the terminal according to the user subscription data of the terminal after the IMS proxy session control function entity requests to establish a session, and sends an application service request to a 4G policy control function entity or a 5G policy control function entity according to the determined user attribute. The service session control function entity of the invention acquires the user attribute from the unified data management entity; and sending the user attribute to a proxy session control function entity, wherein the IMS proxy session control function entity can accurately send an interface session request to a 4G policy control function entity or a 5G policy control function entity according to the user attribute of the terminal.

The invention provides another signaling addressing method, which comprises the following steps:

after receiving an application service request sent by a third-party application, a network capability open functional entity determines an identifier of a session management functional entity or a session binding functional entity corresponding to an IP address included in the application service request according to a mapping relation between the IP address of a terminal and the identifier of the session management functional entity or the session binding functional entity;

the network capacity open functional entity sends a session binding data query request carrying the IP address of the terminal to the session management functional entity according to the identification of the session management functional entity, or sends the session binding data query request carrying the IP address of the terminal to the session binding functional entity according to the identification of the session binding functional entity;

and the network capability open functional entity sends an application service request to the 4G policy control functional entity or the 5G policy control functional entity according to the returned query result.

the DRA receives an application service request sent by an IMS proxy session control function entity;

and the DRA sends an Rx interface session request to a 4G policy control function entity or a 5G policy control function entity.

Here, it should be noted that: the embodiment of the invention is also suitable for the application service request sent by the third-party application.

after receiving a session binding data query request which is sent by a network capability opening function or an IMS proxy session control function entity or DRA and carries an IP address of a terminal, a convergence session management entity queries the address of a 5G policy control function entity corresponding to the terminal according to the IP address of a user;

and the converged session management entity returns the inquired address of the 5G policy control function entity to a network capability opening function or an IMS proxy session control function entity or DRA.

after receiving a session binding data query request carrying the IP address of the terminal sent by a network capability open functional entity, a PGW queries the address of a 4G policy control functional entity corresponding to the terminal according to the IP address of a user;

and the PGW returns the inquired address of the 4G policy control function entity to the network capability open function entity.

The invention provides a signaling addressing network capacity open function entity, which comprises: a processor and a transceiver:

the processor is used for determining the identifier of the session management function entity or the session binding function entity corresponding to the IP address in the application service request according to the mapping relation between the IP address of the terminal and the identifier of the session management function entity or the session binding function entity after receiving the application service request sent by the third-party application; sending a session binding data query request carrying the IP address of the terminal to the session management functional entity according to the identifier of the session management functional entity, or sending the session binding data query request carrying the IP address of the terminal to the session binding functional entity according to the identifier of the session binding functional entity; and sending the application service request to the 4G policy control functional entity or the 5G policy control functional entity according to the returned query result.

The invention provides a signaling addressed DRA, which comprises: a processor and a transceiver:

the processor is used for receiving an application service request sent by an IMS proxy session control function entity; and sending an Rx interface session request to the 4G policy control function entity or the 5G policy control function entity.

The invention provides a signaling addressing converged session management entity, which comprises: a processor and a transceiver:

the processor is used for inquiring the address of the 5G strategy control function entity corresponding to the terminal according to the IP address of the user after receiving a session binding data inquiry request which is sent by a network capability opening function or an IMS proxy session control function entity or DRA and carries the IP address of the terminal; and returning the inquired address of the 5G policy control function entity to a network capability opening function or an IMS proxy session control function entity or DRA.

The invention provides a signaling addressed PGW, which comprises: a processor and a transceiver:

the processor is used for inquiring the address of the 4G strategy control function entity corresponding to the terminal according to the IP address of the user after receiving an address inquiry request sent by the network capability open function entity after receiving a session binding data inquiry request carrying the IP address of the terminal and sent by the network capability open function entity; and returning the inquired address of the 4G policy control function entity to the network capability opening function.

The invention provides a signaling addressing device, which comprises: at least one processing unit and at least one memory unit, wherein the memory unit stores program code which, when executed by the processing unit, causes the processing unit to perform the steps of any of the methods of the IMS proxy session control function entity; or to perform the steps of the method described by the serving session control function entity; or executing the steps of any of the methods of the network capability openness function entity; or performing the steps of any of the methods of the DRA; or executing the steps of the method of the converged session management entity; or steps of the method of PGW.

The present invention provides a computing device readable storage medium comprising program code for causing a processing unit to perform the steps of any of the methods of an IMS proxy session control function entity, when said program code is run on a computing device; or to perform the steps of the method described by the serving session control function entity; or executing the steps of any of the methods of the network capability openness function entity; or performing the steps of any of the methods of the DRA; or executing the steps of the method of the converged session management entity; or steps of the method of PGW.

In the embodiment of the invention, after receiving an interface request sent by a third-party application, a network capacity open functional entity sends an address query message according to the mapping relation between the IP address of a terminal and the identifier of a session management functional entity or a session binding functional entity and the identifier of the session management functional entity or the session binding functional entity corresponding to the determined IP address, and sends an application service request to a 4G policy control function or a 5G policy control function according to the returned query result. The network capacity open functional entity determines that the IP address included in the application service request corresponds to the identifier of the session management functional entity or the session binding functional entity; and sending a session binding data query request according to the identifier of the session management functional entity or the session binding functional entity, and sending an application service request to the 4G policy control function or the 5G policy control function according to the returned query result, so that the session binding data of the terminal can be accurately obtained.

In the embodiment of the invention, after receiving an interface request sent by an IMS proxy session control function entity or a third-party application, a DRA determines a session management function corresponding to an IP address of a user included in an application service request, if the terminal is a 5G user, the DRA sends a session binding data query request carrying the IP address of the terminal to a converged session management entity through a service interface, and sends an Rx interface session request to a 5G policy control function entity according to a query result; if the session binding function entity corresponding to the IP address included in the application service request is a self-terminal, the terminal is a 4G user, the DRA inquires session binding data from a local session binding database according to the IP address of the terminal and sends an Rx interface session request to a 4G policy control function entity according to an inquiry result; and if the session binding function entity corresponding to the IP address included in the application service request is other DRA, the terminal is a 4G user, and the DRA forwards the application service request to the DRA. The session binding data of the terminal can be accurately acquired, and an Rx interface session request is sent to the 4G policy control function entity or the 5G policy control function entity.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a system structure diagram for providing a signaling addressing for an IMS proxy session control function entity according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating that an IMS proxy session control function entity simultaneously sets a signaling link with a DRA and a BSF in an area to interconnect according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a VoIMS terminal performing IMS registration according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating the interconnection of signaling links arranged between DRA, NEF and BSF in the area according to the embodiment of the present invention;

fig. 5 is a flowchart of a method for an IMS proxy session control function entity to send an interface session request directly to a 4G policy control function entity or a 5G policy control function entity according to an embodiment of the present invention;

fig. 6 is a flowchart method of an IMS proxy session control function entity supporting a service interface N5 interface to send an N5 interface session request to a 5G policy control function entity according to an embodiment of the present invention;

fig. 7 is a system structure diagram for providing resource downloading for a third party application platform according to an embodiment of the present invention;

FIG. 8 is a flowchart of a method performed by an embodiment of the present invention for a NEF entity;

FIG. 9 is a flowchart of a method completed when an embodiment of the present invention is directed to DRA;

fig. 10 is a schematic structural diagram of an IMS proxy session control function entity side according to an embodiment of the present invention;

fig. 11 is a schematic side structure diagram of a service session control function entity according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of a network capability openness function entity side architecture according to an embodiment of the present invention;

FIG. 13 is a schematic diagram of a DRA side structure according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a converged session management entity according to an embodiment of the present invention;

FIG. 15 is a schematic side view of a PGW according to an embodiment of the present invention;

fig. 16 is a schematic structural diagram of a signaling addressing device according to an embodiment of the present invention;

fig. 17 is a schematic structural diagram of a signaling addressing device according to an embodiment of the present invention;

fig. 18 is a schematic structural diagram of a signaling addressing device according to an embodiment of the present invention;

fig. 19 is a schematic structural diagram of a signaling addressing device according to an embodiment of the present invention;

fig. 20 is a schematic structural diagram of a signaling addressing device according to an embodiment of the present invention;

fig. 21 is a schematic structural diagram of a signaling addressing device according to an embodiment of the present invention;

fig. 22 is a flowchart of a side method of an IMS proxy session control function entity according to an embodiment of the present invention;

FIG. 23 is a flowchart of a method for serving session control function entity side according to an embodiment of the present invention;

FIG. 24 is a flowchart of a method of an embodiment of the present invention for a network capability openness function entity;

FIG. 25 is a flow chart of a DRA lateral method according to an embodiment of the present invention;

FIG. 26 is a flowchart illustrating a method for merging session management entity sides according to an embodiment of the present invention;

FIG. 27 is a flow chart of a PGW lateral method according to an embodiment of the present invention;

fig. 28 is a schematic structural diagram of another signaling addressing apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

As shown in fig. 1, an embodiment of the present invention provides a system for signaling addressing for an IMS proxy session control function entity, where the system includes: IMS proxy session control function 100, serving session control function 101, DRA102, and converged session management entity 103.

An IMS proxy session control function entity 100, configured to establish an IMS session; and when the IMS session is established, determining to send an application service request to the 4G policy control function entity or the 5G policy control function entity according to the user attribute.

A service session control function entity 101, configured to obtain a user attribute from the unified data management entity; and sending the user attribute to a proxy session control function entity.

And the DRA102 is used for sending an Rx interface session request to the 4G policy function entity or the 5G policy function after receiving the application service request of the IMS proxy session control function entity.

The integrated session management entity 103, after receiving the address query request sent by the IMS proxy session control function entity, queries the address of the 5G policy control function entity corresponding to the terminal according to the user IP address; and returning the inquired address of the 5G policy control function entity to the IMS proxy session control function entity.

The Unified Data management entity may be a converged UDM (Unified Data Repository) entity, a converged HSS (Home Subscriber Server) entity, or a converged HLR (Home location register) entity, the IMS Proxy Session Control Function entity may be a P-CSCF (Proxy Call Session Control Function) entity having an AF Function, the service Session Control Function entity is an S-CSCF (Serving Call Session Control Function) entity, the 4G policy Control Function entity is a PCRF, the 5G policy Control Function entity is a PCF/PGW entity, and the converged Session management entity is a converged SMF/PGW entity.

In the embodiment of the invention, a unified data management entity determines the user attribute of a terminal according to the network type of the terminal, sends user subscription data containing the terminal user attribute to an IMS proxy session control function entity during terminal registration, determines the user attribute of the terminal according to the user subscription data of the terminal after the IMS proxy session control function entity requests to establish an IMS session, and sends an application service request to a 4G policy control function entity or a 5G policy control function entity according to the determined user attribute. The service session control function entity of the invention acquires the user attribute from the unified data management entity; and sending the user attribute to a proxy session control function entity, wherein the IMS proxy session control function entity can accurately send the application service request to a 4G policy control function entity or a 5G policy control function entity according to the user attribute of the terminal.

Wherein, the user subscription data includes, but is not limited to, part or all of the following information:

user code number, IP address, service data, user attributes, etc.

For example: if the terminal is a 5G user, the unified data management entity identifies that the user attribute is a 5G user, and if the terminal is a 4G user, the unified data management entity identifies that the user attribute is a 4G user.

Correspondingly, the service session control function entity obtains the user attribute from the unified data management entity when the terminal is registered, sends the user attribute to the proxy session control function entity through the SIP message when the terminal is registered, and stores the user attribute after the terminal registration process is finished.

Correspondingly, after the terminal initiates a request for establishing the application IMS session, the IMS proxy session control function entity performs judgment according to the user attribute of the terminal after receiving the request for establishing the session of the terminal.

And if the user attribute is a 4G user, the IMS proxy session control function entity sends an application service request to the DRA, the DRA inquires the address of the 4G policy control function entity, and the DRA sends an Rx interface sending request to the 4G policy control function entity.

If the user attribute is a 5G user, the IMS proxy session control function entity sends an application service request to a BSF entity, the BSF entity inquires the address of the 5G policy control function entity, and the BSF entity sends an Rx interface session sending request to the 5G policy control function entity.

The Rx interface session request comprises an IP address of the terminal, and the IMS proxy session control function entity sends the Rx interface session request to the 4G policy control function entity or the 5G policy control function entity according to the IP address of the terminal.

It should be noted that, if the IMS proxy session control function entity supports the service interface N5 interface and determines that the terminal is a 5G user according to the user attribute identifier, the IMS proxy session control function entity may first query the 5G policy control function entity address and then directly send an N5 interface session request to the 5G policy control function entity. The IMS proxy session control function entity may query the 5G policy control function address in the following three ways:

1. when the BSF entity is independently set, the IMS proxy session control function entity sends a session binding data query request carrying a user IP address to the BSF entity according to a locally configured BSF entity address, after receiving the session binding data query request sent by the IMS proxy session control function entity, the BSF entity queries an address of a 5G policy control function entity according to a user IP address query message, and returns the address of the 5G policy control function entity to the IMS proxy session control function entity.

2. When a BSF entity and an NRF entity are combined, the IMS proxy session control function entity initiates a session binding data query request to the NRF entity, and after receiving the IMS proxy session binding data query request, the BSF and NRF combined entity returns the address of the 5G policy control function entity to the IMS proxy session control function entity according to the IP address of a user.

3. When a BSF entity and an SMF entity or a UDR entity are combined, the IMS proxy session control function entity inquires an SMF entity address or a UDR entity address from an NRF entity, and initiates a session binding data inquiry request to the SMF entity or the UDR entity according to the inquired SMF entity address or the UDR entity address, and the SMF entity or the UDR entity inquires an address of a 5G policy control function entity after receiving the session binding data inquiry request sent by the IMS proxy session control function entity and returns the address of the 5G policy control function entity to the IMS proxy session control function entity.

And after receiving the returned address of the 5G policy control function entity, the IMS proxy session control function entity sends an N5 interface session message to the 5G policy control function entity.

The following embodiments of the present invention are described in detail with respect to the above two signaling addressing methods.

Firstly, the IMS proxy session control function entity directly sends an interface session message to a 4G policy control function entity or a 5G policy control function entity:

as shown in fig. 2, the IMS proxy session control function entity sets a signaling link between DRA and BSF in an area where the IMS proxy session control function entity is located, and the unified data management entity signs a user attribute for a user.

When the terminal is started, starting up and attaching, if the terminal is a 5G user, the 5G network establishes IMS default load for a 5G VoIMS user, establishes an N7 interface session to a 5G policy control function entity for a converged session management function entity of user service, and stores session binding information on a binding support function BSF.

If the terminal is a 4G user, the 4G network establishes an IMS default bearer for a 4G VoIMS user, establishes a Gx interface session for a PGW (packet data network) serving the user to a 4G policy control function entity, and stores session binding information on the DRA.

As shown in fig. 3, the VoIMS terminal performs IMS registration. In the registration process, the IMS proxy session control function entity obtains the user attribute from the unified data management entity through the service session control function entity when the terminal is registered, sends the user attribute to the proxy session control function entity through the SIP message when the terminal is registered, and stores the user attribute after the terminal registration process is finished.

Correspondingly, after the terminal initiates a request for establishing the session IMS, the SIP call flow of the IMS terminal passes through the IMS proxy session control function entity, and the IMS proxy session control function entity associates the call with the registration information to inquire the user attribute and judges according to the user attribute.

And if the user attribute is a 4G user, the IMS proxy session control function entity sends an application service request to the DRA, the DRA inquires the address of the 4G policy control function entity according to the IP address of the terminal, and sends an Rx interface session request to the 4G policy control function entity.

And if the user attribute is a 5G user, the IMS proxy session control function entity sends an application service request to a BSF entity, the BSF entity inquires the address of the 5G policy control function entity according to the IP address of the terminal and sends an Rx interface session request to the 5G policy control function entity.

Secondly, when the IMS proxy session control function entity supports a service interface N5 interface and sends an N5 interface session request to a 5G policy control function entity:

as shown in fig. 4, the IMS proxy session control function entity sets signaling links to interconnect with DRA, NEF, and BSF in the area where the IMS proxy session control function entity is located, and the unified data management entity signs user attributes for the user.

And when the terminal is started, starting up and attaching, if the terminal is a 5G user, the 5G network establishes IMS default load for a 5G VoIMS user, establishes an N7 interface session to a 5G policy control function entity for a converged session management function entity of user service, and stores session binding information on a BSF entity, an SMF entity, an UDR entity or an NRF entity.

The VoIMS terminal performs IMS registration, and the specific registration process is the same as that of the method in the above embodiment, and is not described herein again.

Correspondingly, after the terminal initiates a request for establishing the session IMS, the IMS proxy session control function entity determines the user attribute of the terminal according to the association of the call and the registration information of the terminal after receiving the request for establishing the session of the terminal, and judges according to the user attribute.

And if the user attribute is a 4G user, the IMS proxy session control function entity sends an application service request to the DRA, the DRA inquires the address of the 4G policy control function entity, and sends an Rx interface session request to the 4G policy control function entity.

If the user attribute is a 5G user, the IMS proxy session control function entity may query the 5G policy control function address in the above three ways, which is not described herein again.

Correspondingly, after receiving the returned address of the 5G policy control function entity, the IMS proxy session control function entity sends an N5 interface session request to the 5G policy control function entity.

In the following, the embodiment of the present invention provides a complete flowchart method for the IMS proxy session control function entity to directly send an application service request to the 4G policy control function entity or the 5G policy control function entity and for the IMS proxy session control function entity to send an N5 interface session request to the 5G policy control function entity when the IMS proxy session control function entity supports the serving interface N5 interface.

As shown in fig. 5, an embodiment of the present invention provides a flowchart of a complete method for sending an application service request directly to a 4G policy control function entity or a 5G policy control function entity by an IMS proxy session control function entity.

Step 500, the PGW and 4G policy control function entity creates a pdu (protocol Data unit) session for the 4G terminal;

step 501, integrating a session management entity and a 5G policy control function entity to create a PDU session for a 5G terminal;

step 502, the IMS agent session control function entity sets a signaling link with DRA and BSF in the area to interconnect, and acquires user attributes from the unified data management entity in the user registration process;

step 503, after the terminal initiates the request for establishing IMS session, the IMS proxy session control function entity associates the call with the registration information and queries the user attribute; if the user attribute is a 4G user, executing step 504, otherwise executing step 506;

step 504, the IMS proxy session control function entity sends an application service request to the DRA;

step 505, the DRA queries an address of a 4G policy control function entity, and sends an Rx interface session request to the 4G policy control function entity;

step 506, the IMS proxy session control function entity sends an application service request to the BSF entity;

step 507, the BSF entity queries an address of a 5G policy control function entity, and sends an Rx interface session request to the 5G policy control function entity;

step 508, the PGW and 4G policy control function entity deletes the PDU session of the 4G terminal;

step 509, the convergence session management entity and the 5G policy control function entity delete the PDU session of the 5G terminal.

As shown in fig. 6, an embodiment of the present invention provides a flowchart method for the IMS proxy session control function entity to support a service interface N5 interface and send an N5 interface session request to a 5G policy control function entity (taking an example of querying a BSF entity for an address of the 5G policy control function entity).

Step 600, the PGW and the 4G policy control function entity create a PDU session for the 4G terminal;

601, integrating a session management entity and a 5G policy control function entity to create a PDU session for a 5G terminal;

step 602, the IMS proxy session control function entity sets signaling links with DRA, NEF, and BSF in the area to interconnect, and obtains the user attribute from the unified data management entity in the user registration process;

603, after the terminal initiates a request for establishing a session IMS, the IMS proxy session control function entity performs association query on user attributes according to the call and registration information of the terminal; if the user attribute is a 4G user, executing step 604, otherwise executing step 606;

step 604, the IMS proxy session control function entity sends an application service request to the DRA;

step 605, the DRA queries an address of a 4G policy control function entity, and sends an Rx interface session request to the 4G policy control function entity;

step 606, the IMS proxy session control function entity initiates a session binding data query request to a BSF entity;

step 607, after receiving the session binding data query request sent by the IMS proxy session control function entity, the BSF entity queries the address of the 5G policy control function entity and returns the address of the 5G policy control function entity to the IMS proxy session control function entity;

step 608, after receiving the returned address of the 5G policy control function entity, the IMS proxy session control function entity sends an N5 interface session request to the 5G policy control function entity;

step 609. The PGW and the 4G strategy control functional entity delete the PDU conversation of the 4G terminal;

and step 610, the convergence session management entity and the 5G policy control function entity delete the PDU session of the 5G terminal.

As shown in fig. 7, an embodiment of the present invention provides a system for downloading a resource for a third-party application platform, where the system includes: a network capability opening function entity 700, a DRA701, a converged session management entity 702, and a PGW 703.

The capability opening platform 700 is configured to, after receiving an application service request sent by a third-party application, determine, according to a mapping relationship between an IP address of a terminal and an identifier of a session management functional entity or a session binding functional entity, the identifier of the session management functional entity or the session binding functional entity corresponding to the IP address included in the application service request; sending a session binding data query request carrying the IP address of the terminal to the session management functional entity according to the identifier of the session management functional entity, or sending the session binding data query request carrying the IP address of the terminal to the session binding functional entity according to the identifier of the session binding functional entity; and sending the application service request to the 4G policy control functional entity or the 5G policy control functional entity according to the returned query result.

DRA701, configured to receive an application service request sent by an IMS proxy session control function entity; and sending an Rx interface session request to the 4G policy control function entity or the 5G policy control function entity.

A convergence session management entity 702, configured to, after receiving a session binding data query request carrying an IP address of a terminal sent by a network capability openness function or a DRA, query an address of a 5G policy control function entity corresponding to the terminal according to a user IP address; and the body returns the inquired address of the 5G policy control function entity to the network capability opening function or the DRA.

The PGW702 is configured to, after receiving an address query request sent by a session binding data query request carrying an IP address of a terminal and sent by a network capability open function entity, query, by the PGW, an address of a 4G policy control function entity corresponding to the terminal according to the IP address of the user; and the PGW returns the inquired address of the 4G policy control function entity to the network capability opening function.

The 4G policy control function entity is a PCRF entity, the 5G policy control function entity is a PCF/PCRF entity, and the converged session management entity is a converged SMF/PGW entity.

The embodiment of the invention provides two methods for carrying out signaling addressing, one is a NEF entity, and the other is a DRA, and the two methods for carrying out signaling addressing are described in detail below.

1. When it is a NEF entity:

the method comprises the steps that the IP address of a terminal is uniformly divided according to the network type of the terminal, when the terminal is a 4G user, a session management function entity is a PGW, and the IP address of the terminal belongs to the user IP address space of a PGW; and when the terminal is a 5G user, the session management functional entity is a converged session management entity, and the IP address of the terminal belongs to the user IP address space of a PGW.

The NEF entity pre-configures a mapping relation between a terminal IP address and an identifier of a session management function entity or a session binding function entity according to a result of dividing the IP address of the terminal, wherein the identifier of the session management function entity or the session binding function entity can be an address or an ID of the session management function entity or the session binding function entity.

When the terminal is started up, starting up attachment is carried out, when the access network selects a session management network element, a converged session management entity of the 5G network is selected for a 5G user, the 5G network establishes a data service default bearer for the 5G user, and a converged session management entity serving the user creates a PDU session to a 5G policy control function entity at an N7 interface.

And selecting a PGW of the 4G network aiming at the 4G user, wherein the 4G network establishes a data service default bearer for the 4G user, and creates a PDU session at a Gx interface for the PGW served by the user to a 4G policy control function entity.

Correspondingly, the NEF entity pre-configures a mapping relationship between the terminal IP address and the identifier of the session management function entity or the session binding function entity according to the result of dividing the IP address of the terminal, where the mapping relationship may be presented in a form of a table, and the embodiment of the present invention is not limited herein.

And after receiving an application service request sent by a third-party application, the NEF entity finds the identifier of the session management function entity or the session binding function entity serving the terminal according to the mapping relation between the pre-configured terminal IP address and the identifier of the session management function entity or the session binding function entity.

If the terminal is a 5G user and the IP address of the terminal belongs to the user IP address space of the converged session management entity, the session management functional entity is the converged session management entity, and the NEF entity sends a session binding data query request carrying the IP address of the terminal to the converged session management entity through the service interface;

correspondingly, the converged session management entity queries the address of the 5G policy control function entity corresponding to the terminal after receiving a session binding data query request carrying the IP address of the terminal sent by the capability openness platform, and returns the queried address of the 5G policy control function entity to the NEF entity.

And if the terminal is a 4G user, the session management function entity is a PGW, and the NEF entity sends a session binding data query request carrying the IP address of the terminal to the PGW through a query interface.

After receiving a session binding data query request carrying the IP address of the terminal sent by the capability opening platform, the PGW queries the 4G policy control function address corresponding to the terminal and returns the queried address of the 4G policy control function entity to the NEF entity.

Correspondingly, the NEF entity sends an Rx interface request of the 4G terminal to the 4G strategy control functional entity according to the returned query result; or sending an Rx interface request of the 5G terminal to the 5G policy control function entity.

2. When DRA:

and when the terminal is a 5G user, the session management functional entity is a converged session management entity, and the IP address of the terminal belongs to the user IP address space of a PGW.

The DRA pre-configures a mapping relationship between the terminal IP address and the address of the session management function entity or the session binding function entity according to the result of the division of the terminal IP address, wherein the mapping relationship can be presented in a table form, and the embodiment of the invention is not limited herein. Wherein the identity of the session management function entity or the session binding function entity may be an address or an ID of the session management function entity or the session binding function entity.

And after receiving an application service request sent by the IMS proxy session control function entity or a third-party application, the DRA finds the identifier of the session management function entity or the session binding function entity serving the terminal according to the mapping relation between the terminal IP address and the identifier of the session management function entity or the session binding function entity.

And if the DRA obtains that the IP address field of the terminal belongs to the IP address field of the converged session management entity according to the mapping table, the terminal is a 5G user, and the DRA sends a session binding data query request carrying the IP address of the terminal to the converged session management entity through the service interface.

Correspondingly, after the converged session management entity receives a session binding data query request carrying the IP address of the terminal sent by the capability openness platform, the converged session management entity queries the address of the 5G policy control function entity corresponding to the terminal, and returns the queried address of the 5G policy control function entity to the DRA.

Correspondingly, the DRA sends an Rx interface session request of the 5G terminal to the 5G policy control function entity according to the query result.

And if the session binding functional entity corresponding to the IP address included in the application service request is the terminal, the terminal is a 4G user, the DRA inquires session binding data from a local session binding database according to the IP address of the terminal and sends an Rx interface session request to the 4G policy control functional entity according to an inquiry result.

And if the session binding function entity corresponding to the IP address included in the application service request is other DRA, the terminal is a 4G user, and the DRA forwards the application service request to the DRA.

It should be noted here that, the mapping relationship between the IP address of the DRA query terminal and the identifier of the session management functional entity or the session binding functional entity and the execution sequence of the session binding database local to the DRA query according to the embodiment of the present invention are not limited herein.

The following embodiments of the present invention provide a complete flowchart method for the NEF entity and the DRA two methods for signaling addressing.

As shown in fig. 8, the embodiment of the present invention provides a complete method flowchart when the NEF entity is targeted:

step 800, the PGW and the 4G strategy control function entity creates a PDU session for the 4G terminal;

801, integrating a session management entity and a 5G policy control function entity to create a PDU session for a 5G terminal;

step 802, the NEF entity queries the mapping relationship after receiving the interface request sent by the third party application, finds the identifier of the session management function or the session binding function entity serving the terminal, if the terminal is a 4G user, performs step 803, otherwise performs step 806;

step 803, the NEF entity sends a session binding data query request to the PGW through a query interface;

step 804, after receiving the session binding data query request, the PGW queries an address of a 4G policy control function entity corresponding to the terminal, and returns the queried address of the 4G policy control function entity to the NEF entity;

step 805, the NEF entity sends the application service request of the 4G terminal to the 4G policy control function entity according to the returned query result;

step 806, the NEF entity sends a session binding data query request to the converged session management entity through a service interface;

step 807, the converged session management entity queries the address of the 5G policy control function entity corresponding to the terminal, and returns the queried address of the 5G policy control function entity to the NEF entity;

step 808, the NEF entity sends the application service request of the 5G terminal to the 5G policy control function entity according to the returned query result;

step 809, the PGW and 4G policy control function entity releases the 4G terminal PDU session;

step 810, the converged session management entity and the 5G policy control function entity release the 5G terminal PDU session.

As shown in fig. 9, the embodiment of the present invention provides a complete method flowchart when the capability openness platform is a DRA:

step 900, the PGW and 4G policy control function entity creates a PDU session for the 4G terminal;

step 901, merging the session management entity and the 5G policy control function entity to create a PDU session for the 5G terminal;

step 902, the DRA searches for a mapping relationship after receiving an application service request sent by an IMS proxy session control function entity or a third party application, and if the IP address field of the terminal is found to belong to an IP address field of a converged session management entity, step 903 is executed, otherwise step 906 is executed;

step 903, the real DRA body sends a session binding data query request to a converged session management entity through a service interface;

step 904, the convergence session management entity queries the address of the 5G policy control function entity corresponding to the terminal, and returns the queried address of the 5G policy control function entity to the DRA;

step 905, the DRA sends an Rx interface session request of the 5G terminal to the 5G policy control function entity according to the returned query result;

step 906, the DRA queries a local session binding database;

step 907, the DRA sends an Rx interface session request of the 4G terminal to a 4G policy control function entity according to the query result;

step 908, the PGW and 4G policy control function entity deletes the PDU session of the 4G terminal;

and step 909, the converged session management entity and the 5G policy control function entity delete the PDU session of the 5G terminal.

As shown in fig. 10, a signaling addressing IMS proxy session control function entity according to an embodiment of the present invention includes: processor 1000 and transceiver 1001:

the processor 1000 is configured to establish an IMS session, and send an application service request to a 4G policy control function entity or a 5G policy control function entity according to a user attribute when the IMS session is established.

Optionally, the processor 1000 is specifically configured to:

and acquiring the user attribute of the terminal through the service session control function entity.

Optionally, the processor 1000 is specifically configured to:

if the user attribute is a 4G user, sending an application service request to a 4G policy control function entity; or if the user attribute is a 5G user, sending an application service request to a 5G policy control function entity;

optionally, the processor 1000 is further configured to:

and sending an Rx interface session request to the 4G policy control function entity through the DRA.

Optionally, the processor 1000 is specifically configured to:

sending a session binding data query request carrying a user IP address to a BSF entity; or inquiring the BSF entity address from the NRF entity, and sending a session binding data inquiry request carrying the IP address of the terminal to the BSF entity according to the inquired BSF entity address;

as shown in fig. 11, a service session control function entity for signaling addressing in an embodiment of the present invention includes: processor 1100 and transceiver 1101:

the processor 1100 is configured to obtain a user attribute from the unified data management entity; and sending the user attribute to a proxy session control function entity.

As shown in fig. 12, a network capability openness function entity for signaling addressing in an embodiment of the present invention includes: processor 1200 and transceiver 1201:

the processor 1200 is configured to, after receiving an application service request sent by a third-party application, determine, according to a mapping relationship between an IP address of a terminal and an identifier of a session management function entity or a session binding function entity, an identifier of the session management function entity or the session binding function entity corresponding to the IP address included in the application service request; sending a session binding data query request carrying the IP address of the terminal to the session management functional entity according to the identifier of the session management functional entity, or sending the session binding data query request carrying the IP address of the terminal to the session binding functional entity according to the identifier of the session binding functional entity; and sending the application service request to the 4G policy control functional entity or the 5G policy control functional entity according to the returned query result.

Optionally, when the terminal is a 4G user, the session management functional entity is a PGW, and an IP address of the terminal belongs to a user IP address space of the PGW; or when the terminal is a 5G user, the session management functional entity is a converged session management entity, and the IP address of the terminal belongs to the user IP address space of the converged session management entity.

Optionally, the processor 1200 is further configured to:

if the terminal is a 5G user, the user sends a session binding data query request carrying the IP address of the terminal to a converged session management entity through a service interface; or if the terminal is a 4G user, sending a session binding data query request carrying the IP address of the terminal to the PGW through a query interface.

As shown in fig. 13, in an embodiment of the present invention, a signaling-addressed DRA, where the serving session control function entity includes: processor 1300 and transceiver 1301:

the processor 1300 is configured to receive an application service request sent by an IMS proxy session control function entity; and sending an Rx interface session request to the 4G policy control function entity or the 5G policy control function entity.

Optionally, before sending the Rx interface session request to the 4G policy control function entity or the 5G policy control function entity, the identifier of the session management function entity or the session binding function entity corresponding to the IP address included in the application service request is determined according to a mapping relationship between the IP address of the terminal and the identifier of the session management function entity or the session binding function entity.

Optionally, when the terminal is a 5G user, the session management functional entity is a converged session management entity, and the IP address of the terminal belongs to a user IP address space of the converged session management entity.

Optionally, the processor 1300 is further configured to:

after determining the identifier of the session management function entity or the session binding function entity corresponding to the IP address of the user included in the application service request, if the IP address of the user included in the application service request corresponds to the session management function entity, the terminal is a 5G user, sends a session binding data query request carrying the IP address of the terminal to the converged session management entity through a service interface, and sends an Rx interface session request to the 5G policy control function entity according to a query result; or

As shown in fig. 14, a converged session management entity addressed by signaling in an embodiment of the present invention includes: processor 1400 and transceiver 1411:

the processor 1400 is configured to, after receiving a session binding data query request carrying an IP address of a terminal sent by a network capability opening function or an IMS proxy session control function entity or a DRA, query an address of a 5G policy control function entity corresponding to the terminal according to the IP address of the user; and returning the inquired address of the 5G policy control function entity to a network capability opening function or an IMS proxy session control function entity or DRA.

As shown in fig. 15, a signaling addressed PGW according to an embodiment of the present invention includes: processor 1500 and transceiver 1501:

the processor 1500 is configured to, after receiving a session binding data query request carrying an IP address of a terminal sent by a network capability openness function entity, query an address of a 4G policy control function entity corresponding to the terminal according to a user IP address; and returning the inquired address of the 4G policy control function entity to the network capability open function entity.

As shown in fig. 16, an embodiment of the present invention provides a signaling addressing device, including:

a first determining module 1600, configured to establish an IMS session;

a first sending module 1601, configured to send an application service request to a 4G policy control function entity or a 5G policy control function entity by a user attribute.

Optionally, the first determining module 1600 is specifically configured to:

Optionally, the first sending module 1601 is specifically configured to:

if the user attribute is a 4G user, sending an application service request to a 4G policy control function entity; or if the user attribute is a 5G user, sending an application service request to a 5G policy control function entity.

Optionally, the first sending module 1601 is further configured to:

and the entity sends an Rx interface session request to the 4G policy control function entity through the DRA.

Optionally, the first sending module 1601 is further configured to:

sending a session binding data query request carrying a user IP address to a BSF entity; or inquiring the BSF entity address from the NRF entity, and sending a session binding data inquiry request carrying the IP address of the terminal to the BSF entity according to the inquired BSF entity address.

As shown in fig. 17, an apparatus for signaling addressing according to an embodiment of the present invention includes:

a second determining module 1700, configured to obtain a user attribute from the unified data management entity;

a second sending module 1701, configured to send the user attribute to the proxy session control function entity.

As shown in fig. 18, an apparatus for signaling addressing according to an embodiment of the present invention includes:

a receiving module 1800, configured to determine, after receiving an application service request sent by a third-party application, an identifier of a session management function entity corresponding to an IP address included in the application service request according to a mapping relationship between the IP address of a terminal and the identifier of the session management function entity;

a third sending module 1801, configured to send a session binding data query request carrying an IP address of the terminal to the session management functional entity according to the identifier of the session management functional entity, or send a session binding data query request carrying an IP address of the terminal to the session binding functional entity according to the identifier of the session binding functional entity; and sending the application service request to the 4G policy control functional entity or the 5G policy control functional entity according to the returned query result.

Optionally, when the terminal is a 4G user, the session management functional entity is a PGW, and an IP address of the terminal belongs to a user IP address space of the PGW; and when the terminal is a 5G user, the session management functional entity is a converged session management entity, and the IP address of the terminal belongs to the user IP address space of the converged session management entity.

Optionally, the third sending module 1801 is further configured to:

if the terminal is a 5G user, the network capacity open functional entity sends a session binding data query request carrying the IP address of the terminal to a converged session management entity through a service interface; or

And if the terminal is a 4G user, the network capability open functional entity sends a session binding data query request carrying the IP address of the terminal to the PGW through a query interface.

As shown in fig. 19, an apparatus for signaling addressing according to an embodiment of the present invention includes:

a third determining module 1900, configured to receive an application service request sent by an IMS proxy session control function entity;

a fourth sending module 1901, configured to send an Rx interface session request to the 4G policy control function entity or the 5G policy control function entity.

Optionally, the third sending module 1801 is further configured to:

after determining the identifier of the session management function corresponding to the IP address of the user included in the application service request, if the IP address of the user included in the application service request corresponds to the session management function entity, the terminal is a 5G user, the DRA sends a session binding data query request carrying the IP address of the terminal to the converged session management entity through a service interface, and sends an Rx interface session request to the 5G policy control function entity according to the query result; or if the session binding functional entity corresponding to the IP address included in the application service request is the terminal, the terminal is a 4G user, the DRA inquires session binding data from a local session binding database according to the IP address of the terminal, and sends an Rx interface session request to the 4G policy control functional entity according to the inquiry result. And if the session binding function entity corresponding to the IP address included in the application service request is other DRA, the terminal is a 4G user, and the DRA forwards the application service request to the DRA.

As shown in fig. 20, an apparatus for signaling addressing according to an embodiment of the present invention includes:

a first query module 2000, configured to, after receiving a session binding data query request carrying an IP address of a terminal sent by a network capability openness function or an IMS proxy session control function entity or a DRA, query an address of a 5G policy control function entity corresponding to the terminal according to the IP address of the user;

a fifth sending module 2001, configured to return the queried address of the 5G policy control function entity to the network capability openness function or the IMS proxy session control function entity or the DRA.

As shown in fig. 21, an apparatus for signaling addressing according to an embodiment of the present invention includes:

a second query module 2100, configured to, after receiving a session binding data query request carrying an IP address of a terminal sent by a network capability openness function entity, query an address of a 4G policy control function entity corresponding to the terminal according to a user IP address;

the sixth sending module 2101 returns the queried address of the 4G policy control functional entity to the network capability openness functional entity.

Based on the same inventive concept, the embodiment of the present invention further provides a method for signaling addressing, and since the device corresponding to the method is the method corresponding to the device for signaling addressing in the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the device, the method can be implemented by referring to the device, and repeated details are not repeated.

As shown in fig. 22, a method for signaling addressing according to an embodiment of the present invention includes the following steps:

step 2200, the IMS proxy session control function entity establishes an IMS session;

step 2201, when the IMS proxy session control function entity establishes an IMS session, the IMS proxy session control function entity sends an application service request to the 4G policy control function entity or the 5G policy control function entity according to the user attribute.

Optionally, the IMS proxy session control function entity obtains the user attribute in the following manner:

the IMS proxy session control function obtains the user attribute of the terminal through a service session control function entity.

Optionally, the sending, by the IMS proxy session control function entity, the application service request to the 4G policy control function entity or the 5G policy control function entity according to the determined user attribute includes:

if the user attribute is a 4G user, the IMS proxy session control function entity sends an application service request to a 4G policy control function entity; or if the user attribute is a 5G user, the IMS proxy session control function entity sends an application service request to the 5G policy control function entity.

Optionally, the IMS proxy session control function entity sends an application service request to the 5G policy control function entity, further including:

the IMS proxy session control function entity sends an Rx interface session request to a 5G policy control function entity through a BSF entity; or after the IMS proxy session control function entity inquires the address of the 5G policy control function entity, the IMS proxy session control function entity sends an N5 interface session request to the 5G policy control function entity.

Optionally, the sending, by the IMS proxy session control function entity, an application service request to the 4G policy control function entity further includes:

and the IMS proxy session control function entity sends an Rx interface session request to a 4G policy control function entity through DRA.

Optionally, the querying, by the IMS proxy session control function entity, an address of the 5G policy control function entity includes:

the IMS proxy session control function entity sends a session binding data query request carrying a user IP address to a BSF entity; or

The IMS proxy session control function entity inquires the BSF entity address from the NRF entity and sends a session binding data inquiry request carrying the IP address of the terminal to the BSF entity according to the inquired BSF entity address.

As shown in fig. 23, a method for signaling addressing according to an embodiment of the present invention includes the following steps:

2300, the service session control function entity obtains the user attribute from the unified data management entity;

step 2301, the service session control function entity sends the user attribute to the proxy session control function entity.

As shown in fig. 24, a method for signaling addressing according to an embodiment of the present invention includes the following steps:

2400, after receiving an application service request sent by a third-party application, a network capability openness function entity determines, according to a mapping relationship between an IP address of a terminal and an identifier of a session management function entity or a session binding function entity, an identifier of the session management function entity or the session binding function entity corresponding to the IP address included in the application service request;

step 2401, the network capability opening functional entity sends a session binding data query request carrying an IP address of the terminal to the session management functional entity according to the identifier of the session management functional entity, or sends a session binding data query request carrying the IP address of the terminal to the session binding functional entity according to the identifier of the session binding functional entity;

step 2402, the network capability openness function entity sends an application service request to the 4G policy control function entity or the 5G policy control function entity according to the returned query result.

Optionally, when the terminal is a 4G user, the session management functional entity is a PGW, and an IP address of the terminal belongs to a user IP address space of the PGW; or

And when the terminal is a 5G user, the session management functional entity is a converged session management entity, and the IP address of the terminal belongs to the user IP address space of the converged session management entity.

Optionally, the sending, by the network capability openness function entity, a session binding data query request carrying an IP address of the terminal includes:

As shown in fig. 25, a method for signaling addressing according to an embodiment of the present invention includes the following steps:

2500, receiving an application service request sent by an IMS proxy session control function entity by the DRA;

step 2501, the DRA sends an Rx interface session request to a 4G policy control function entity or a 5G policy control function entity.

Optionally, before the DRA sends an Rx interface session request to the 4G policy control function entity or the 5G policy control function entity, the method further includes:

after receiving an application service request sent by a third-party application, the DRA determines the identifier of the session management function entity or the session binding function entity corresponding to the IP address included in the application service request according to the mapping relationship between the IP address of the terminal and the identifier of the session management function entity or the session binding function entity.

Optionally, the determining the identifier of the session management function entity or the session binding function entity corresponding to the IP address included in the application service request includes:

Optionally, after the DRA determines the identifier of the session management function entity or the session binding function entity corresponding to the IP address of the user included in the application service request, the DRA further includes:

if the IP address of the user included in the application service request corresponds to a session management function entity, the terminal is a 5G user, the DRA sends a session binding data query request carrying the IP address of the terminal to a converged session management entity through a service interface, and sends an Rx interface session request to a 5G policy control function entity according to a query result; or

And if the session binding function entity corresponding to the IP address included in the application service request is a certain DRA, the terminal is a 4G user, and the DRA forwards the application service request to the DRA.

As shown in fig. 26, a method for signaling addressing according to an embodiment of the present invention includes the following steps:

step 2600, after receiving a session binding data query request carrying an IP address of the terminal sent by a network capability opening function or an IMS proxy session control function entity or a DRA, the convergence session management entity queries an address of a 5G policy control function entity corresponding to the terminal according to the user IP address;

step 2601, the converged session management entity returns the queried address of the 5G policy control function entity to the network capability opening function or IMS proxy session control function entity or DRA.

As shown in fig. 27, a method for signaling addressing according to an embodiment of the present invention includes the following steps:

step 2700, after receiving an address query request sent by a session binding data query request carrying an IP address of the terminal and sent by a network capability open functional entity, the PGW queries an address of a 4G policy control functional entity corresponding to the terminal according to the IP address of the user;

step 2701, the PGW returns the queried address of the 4G policy control function entity to the network capability openness function entity.

As shown in fig. 28, the present invention provides a signaling addressed device, which includes: at least one processing unit 2800 and at least one storage unit 2801, wherein the storage unit 2801 stores program code that, when executed by the processing unit 2800, causes the processing unit 2800 to perform the steps of any of the methods of an IMS proxy session control function entity; or to perform the steps of the method described by the serving session control function entity; or executing the steps of any of the methods of the network capability openness function entity; or performing the steps of any of the methods of the DRA; or executing the steps of the method of the converged session management entity; or steps of the method of PGW.

In some possible embodiments, various aspects of the signaling addressing provided by the embodiments of the present invention may also be implemented in the form of a program product including program code for causing a computer device to perform the steps in the method of signaling addressing according to various exemplary embodiments of the present invention described in this specification when the program code runs on the computer device.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

A program product for signaling addressing control according to an embodiment of the present invention may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a server device. However, the program product of the present invention is not limited thereto, and in this document, the readable storage medium may be any tangible medium containing or storing the program, which can be used by or in connection with an information transmission, apparatus, or device.

A readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the periodic network action system, apparatus, or device.

Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device.

An embodiment of the present invention provides a computing device-readable storage medium, including program code, when the program code runs on a computing device, the program code is configured to cause the computing device to execute the steps of any of the methods of an IMS proxy session control function entity; or to perform the steps of the method described by the serving session control function entity; or executing the steps of any of the methods of the network capability openness function entity; or performing the steps of any of the methods of the DRA; or executing the steps of the method of the converged session management entity; or steps of the method of PGW.

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

Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

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

Claims

1. A method of signaling addressing, the method comprising:

an IP multimedia subsystem IMS proxy session control function entity establishes an IMS session;

and when the IMS proxy session control function entity establishes an IMS session, sending an application service request to the 4G policy control function entity or the 5G policy control function entity according to the user attribute.

2. The method of claim 1, wherein the IMS proxy session control function entity obtains the user attribute by:

3. The method of claim 1, wherein the IMS proxy session control function entity sending an application service request to a 4G policy control function entity or a 5G policy control function entity based on the user attribute, comprising:

if the user attribute is a 4G user, the IMS proxy session control function entity sends an application service request to a 4G policy control function entity; or

And if the user attribute is a 5G user, the IMS proxy session control function entity sends an application service request to the 5G policy control function entity.

4. The method of claim 3, wherein the IMS proxy session control function entity sends an application service request to a 5G policy control function entity, further comprising:

the IMS proxy session control function entity sends an Rx interface session request to a 5G policy control function entity through a BSF entity; or

After querying the 5G policy control function entity address, the IMS proxy session control function entity sends an N5 interface session request to the 5G policy control function entity.

5. The method of claim 3, wherein the IMS proxy session control function entity sends an application service request to a 4G policy control function entity, further comprising:

6. The method of claim 4, wherein the IMS proxy session control function entity querying an address of a 5G policy control function entity, comprising:

7. A method of signaling addressing, the method comprising:

and the service session control function entity sends the user attribute to a proxy session control function entity so that the proxy session control function entity sends an application service request to a 4G policy control function entity or a 5G policy control function entity according to the user attribute when establishing an IMS session.

8. A method of signaling addressing, the method comprising:

after receiving a session binding data query request which is sent by an IMS proxy session control function entity according to user attributes and carries an IP address of a terminal, a convergence session management entity queries the address of a 5G policy control function entity corresponding to the terminal according to the user IP address;

and the converged session management entity returns the inquired address of the 5G policy control function entity to the IMS proxy session control function entity.

9. A signaling addressed IMS proxy session control function entity, characterized in that the signaling addressed IMS proxy session control function entity comprises: a processor and a transceiver:

10. The IMS proxy session control function entity of claim 9, wherein the processor is specifically configured to:

11. The IMS proxy session control function entity of claim 9, wherein the processor is specifically configured to:

12. The IMS proxy session control function entity of claim 11, wherein the processor is further configured to:

sending an Rx interface session request to a 5G policy control function entity through a BSF entity; or after inquiring the address of the 5G policy control function entity, sending an N5 interface session request to the 5G policy control function entity.

13. The IMS proxy session control function entity of claim 11, wherein the processor is further configured to:

14. The IMS proxy session control function entity of claim 12, wherein the processor is specifically configured to:

15. A service session control function entity addressed by signalling, characterized in that the service session control function entity comprises: a processor and a transceiver:

the processor is used for acquiring the user attribute from the unified data management entity; and sending the user attribute to a proxy session control function entity so that the proxy session control function entity sends an application service request to a 4G policy control function entity or a 5G policy control function entity according to the user attribute when establishing an IMS session.

16. A signaling-addressed converged session management entity, characterized in that the converged session management entity comprises: a processor and a transceiver:

the processor is used for inquiring the address of the 5G strategy control function entity corresponding to the terminal according to the IP address of the user after receiving a session binding data inquiry request which is sent by the IMS proxy session control function entity according to the user attribute and carries the IP address of the terminal; and returning the inquired address of the 5G policy control function entity to the IMS proxy session control function entity.

17. An apparatus for signaling addressing, the apparatus comprising: at least one processing unit and at least one memory unit, wherein the memory unit stores program code which, when executed by the processing unit, causes the processing unit to perform the steps of the method of any of claims 1 to 6; or performing the steps of the method of claim 7; or performing the steps of the method of claim 8.

18. A computer-readable storage medium, comprising program code means for causing a computing device to carry out the steps of the method as claimed in any one of claims 1 to 6 when said program code means is run on the computing device; or performing the steps of the method of claim 7; or performing the steps of the method of claim 8.