WO2018223974A1

WO2018223974A1 - Session management method and apparatus.

Info

Publication number: WO2018223974A1
Application number: PCT/CN2018/090027
Authority: WO
Inventors: 王胡成
Original assignee: 电信科学技术研究院有限公司
Priority date: 2017-06-06
Filing date: 2018-06-06
Publication date: 2018-12-13

Abstract

Disclosed are a session management method and apparatus, wherein same are applied to a mobile network. The method comprises: determining a registration mode of a terminal sending a session establishment request or an interoperation capability supported by a network side device; and when the registration mode is a single-registration mode or when the network side device supports the interoperation capability, determining the completion of the mapping of QoS parameters between different systems when a session connection is created for the terminal. The present invention solves the technical problems in the prior art that an SMF cannot determine whether QoS mapping needs to be performed when a terminal is establishing a session connection in a mobile network and that an unnecessary signalling process will be caused for a terminal with a dual-registration mode if the SMF always performs QoS mapping.

Description

Session management method and device

This application is required to be submitted to the Chinese Patent Office on June 6, 2017, the application number is 201710418244.5, the invention name is “a session management method and device”, and the Chinese Patent Office is submitted on August 9, 2017, and the application number is 201710677595.8. The title of the invention is the priority of the Chinese Patent Application, which is incorporated herein by reference.

Technical field

The present invention relates to the field of communications, and in particular, to a session management method and apparatus.

Background technique

Nx between AMME (Access Control and Mobility Management Function) in MME (Mobility Management Entity) and 5G (The Fifith Generation Mobile Network) system The interface is optional. When the Nx interface is supported in the mobile network, the switch between the 5G system and the EPS (Evolved Packet System) system can be supported. In this case, the user terminal needs to be transmitted between the MME and the AMF. Contextual information, including the context of the mobility context and the context of the session. When the terminal accesses the network that supports the Nx interface, the network may configure its registration mode to the single registration mode. Currently, the single registration mode is a working mode that is mandatory for the terminal to support.

When the mobile network does not support the Nx interface, the handover is not supported between the 5G system and the LTE (Long Term Evolution) system. In order to support interoperability, the mobile network needs to require the terminal to perform dual registration mode. That is, registration is maintained in both the 5G system and the EPS system. Considering the support of business continuity in the dual registration mode, the SMF (Session Management Function) of the control plane in the network is required to simultaneously support the function of the PGW-C (PDN GateWay-Control, control plane of the packet data gateway). In this way, by Handover registration, it can be ensured that when the terminal moves between the EPS system and the 5G system, its session connection is always anchored at the same user plane anchor point.

The dual-registered terminal is further divided into SR (single radio) capability and DR (dual radio) capability. At the same time, the SR terminal can only maintain one side of the session connection, that is, to maintain the connection in the EPS system or to maintain the connection in the 5G system, so that if the terminal moves between the EPS system and the 5G system, it will be inevitable. Loss of packets can not guarantee seamless business continuity. The DR terminal can maintain the connection in the EPS system and the 5G system at the same time. Therefore, when moving between different systems in the mobile network, the connection can be switched in a make-before-break manner, that is, from the connection. While the target network receives the data, it still receives data from the source side network, thereby ensuring the connection of the service.

Since the terminal can negotiate with the network to use the single registration mode or dual registration, there may be terminals using different registration modes in the same network; even if the network uniformly supports an interoperability mode, in actual network deployment, PGW- is supported. The C-function SMF has the control function of the gateway anchor, which can not only serve the network of the operator, but also serve other operators to visit the network in the roaming scenario, and the operator network and the visited network may also support different interoperability modes.

When serving a single mode terminal, the SMF supporting the PGW-C function needs to perform QoS (Quality of Service) mapping during the session establishment process; when serving the dual registration mode terminal, the SMF supporting the PGW-C function is not QoS mapping is required.

Therefore, the prior art has the following technical problem: the SMF supporting the PGW-C function does not recognize the registration mode of the terminal and distinguishes the processing, or the SMF cannot determine whether the AMF that receives the session request sent by the terminal supports interoperability. Therefore, when the terminal establishes a session connection in the mobile network, the SMF cannot determine whether QoS mapping needs to be performed. If the SMF always performs QoS mapping, the terminal for the dual registration mode will cause an unnecessary signaling process. .

Summary of the invention

The embodiment of the present invention provides a session management method and apparatus for solving the SMF that supports the PGW-C function in the prior art, and does not recognize the registration mode of the terminal and distinguishes the processing or the SMF, and cannot determine the session sent by the terminal. Whether the requested AMF supports interoperability. When the terminal establishes a session connection in the mobile network, the SMF cannot determine whether QoS mapping needs to be performed. If the SMF always performs QoS mapping, the terminal for the dual registration mode will A technical problem that causes unnecessary signaling procedures.

In a first aspect, an embodiment of the present invention provides a session management method, which is applied to a mobile network, where the method includes: determining a registration mode of a terminal that sends a session establishment request or determining a network side of receiving a session establishment request sent by the terminal. Whether the device supports the interoperability; when the registration mode is the single registration mode or when the network side device supports the interoperation capability, it is determined that the mapping of the QoS parameters between different systems is completed when the session connection is created for the terminal.

Optionally, the determining a registration mode of the terminal that sends the session establishment request includes:

Determining, according to the registration mode information of the terminal that is provided by the access control and the mobility management function entity AMF, that the terminal is in a single registration mode or a dual registration mode;

Or determining, according to the received registration mode information carried by the terminal in the session establishment request message, that the terminal is in a single registration mode or a dual registration mode.

Optionally, the determining, according to the registration mode information of the terminal that is provided by the access control and the mobility management function entity AMF, that the terminal is in a single registration mode or a dual registration mode, includes:

Determining the registration mode of the terminal according to the registration mode information of the terminal provided by the received access control and mobility management function entity AMF when forwarding the session establishment request.

Optionally, the method further includes:

Determining, in the registration mode update process of the terminal, when the registration mode of the terminal changes, according to the received access control and the changed registration mode of the terminal provided by the mobility management function entity AMF, The registration mode of the terminal.

Optionally, the determining, by the network side device that receives the session establishment request sent by the terminal, the interoperability, includes:

Whether the access control and mobility management function entity AMF supports the interoperation capability is determined according to whether the access control and the mobility management function entity AMF receiving the session establishment request support the interoperation interface.

Receiving an indication of an access control and mobility management function entity AMF serving the terminal, or an indication of a session management function entity SMF serving the visited network of the terminal, determining whether the access control and mobility management function entity AMF is Support interoperability.

Optionally, the indication of the session management function entity SMF of the visited network that serves the terminal includes:

The session management function entity SMF of the visited network, in the creation session request, is used to indicate whether the access control and mobility management function entity AMF supports an interoperability capability indication; or

The indication provided by the session management function entity SMF of the visited network for characterizing the EPS system bearer identifier. Optionally, when the network side device supports the interoperability, it is determined that the mapping of the QoS parameters between different systems is completed when the session connection is created for the terminal, including:

When the access control and mobility management function entity AMF supports the interoperation interface, mapping of QoS parameters between different systems is completed.

Optionally, the mapping of the QoS parameters between different systems is performed, including:

When the session connection is established in the 5G system, mapping the QoS parameter corresponding to the session connection to the QoS parameter of the EPS system; or

When the session connection is established in the EPS system, the QoS parameters corresponding to the session connection are mapped to the QoS parameters of the 5G system.

In a second aspect, an embodiment of the present invention provides a session management apparatus, which is applied to a mobile network, where the apparatus includes: a first determining module, configured to determine a registration mode of a terminal that sends a session establishment request, or determine that the received terminal sends Whether the network side device of the session establishment request supports interoperability;

And a second determining module, configured to: when the registration mode is a single registration mode or when the network side device supports the interoperation capability, determine to complete mapping of different inter-system QoS parameters when creating a session connection for the terminal.

Optionally, the first determining module includes:

a first determining submodule, configured to determine, according to the registration mode information of the terminal that is provided by the access control and the mobility management function entity AMF, that the terminal is in a single registration mode or a dual registration mode; or

And a second determining submodule, configured to determine, according to the received registration mode information that the terminal carries in the session establishment request message, that the terminal is in a single registration mode or a dual registration mode.

Optionally, the first determining submodule is specifically configured to:

Optionally, the device further includes:

a third determining module, configured to change, according to the received access control and the mobility management function entity AMF, when the registration mode of the terminal changes during a registration mode update process of the terminal The subsequent registration mode determines the registration mode of the terminal.

Optionally, the first determining module is specifically configured to:

The indication provided by the session management function entity SMF of the visited network for characterizing the EPS system bearer identifier.

Optionally, the second determining module is specifically configured to:

When the access control and mobility management function entity AMF supports the interoperation interface, mapping of different inter-system QoS parameters is completed.

Optionally, the mapping for completing the QoS parameters between different systems specifically includes:

In a third aspect, an embodiment of the present invention provides a computer apparatus, where the apparatus includes a processor, and the processor is configured to implement the steps of the session management method as described in the foregoing embodiments when executing a computer program stored in a memory.

In a fourth aspect, an embodiment of the present invention provides a computer readable storage medium having stored thereon a computer program that implements the steps of the session management method as described in the foregoing embodiments when the computer program is executed by a processor.

In a fifth aspect, an embodiment of the present invention provides a communications device, where the device includes:

A processor for reading a program in the memory, performing the following process:

Determining a registration mode of the terminal that sends the session establishment request or determining whether the network side device that receives the session establishment request sent by the terminal supports the interoperation capability;

When the registration mode is a single registration mode or when the network side device supports the interoperation capability, determining to perform mapping of different inter-system QoS parameters when creating a session connection for the terminal;

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

The technical solution provided in the embodiment of the present invention has the following technical effects:

The SMF supporting the PGW-C function can obtain the registration mode of the terminal or obtain whether the AMF supports interoperability, and based on the registration mode or whether to support the interoperability, determine whether to perform mapping of QoS parameters between different systems in the mobile network, thereby ensuring The SMF can correctly map QoS parameters to session connections.

DRAWINGS

1 is a network architecture model supporting interoperability between a 5G system and an EPS system in the background art;

2 is a first flowchart of a session management method according to an embodiment of the present invention;

3 is a second flowchart of a session management method according to an embodiment of the present invention;

4 is a third flowchart of a session management method according to an embodiment of the present invention;

FIG. 5A is a fourth flowchart of a session management method according to an embodiment of the present invention; FIG.

FIG. 5B is a fifth flowchart of a session management method according to an embodiment of the present invention; FIG.

FIG. 6 is a first schematic diagram of a session management apparatus according to an embodiment of the present invention.

detailed description

In order to solve the above technical problem, the technical solution related to the session management in the embodiment of the present invention mainly includes: receiving a session establishment request; determining a registration mode of the terminal that sends the session establishment request; and determining, according to the registration mode of the terminal, Whether the terminal completes the mapping of QoS parameters between different systems when creating a session connection.

In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the drawings and specific embodiments.

Referring to FIG. 1, a first embodiment of the present invention provides a session management method, which is applied to a mobile network, where the method includes:

S101. Determine a registration mode of the terminal that sends the session establishment request, or determine whether the network side device that receives the session establishment request sent by the terminal supports the interoperation capability.

S102. When the registration mode is a single registration mode, or when the network side device supports the interoperation capability, determine to complete mapping of different inter-system QoS parameters when creating a session connection for the terminal.

Specifically, S101 is as follows:

And determining, according to the registration mode information of the terminal provided by the AMF, that the terminal is in a single registration mode or a dual registration mode. Specifically, the SMF determines the registration mode of the terminal according to the registration mode information of the terminal that is provided when the received AMF forwards the session establishment request. Or the SMF may determine the registration mode of the terminal according to the registration mode of the terminal that the received AMF returns in response to the session management request of the SMF. Or determining, according to the received registration mode information that the terminal carries in the session establishment request message, that the terminal is in a single registration mode or a dual registration mode. Prior to this, before S101, a step may also be included to receive a session establishment request.

Or determining whether the access control and mobility management function entity AMF supports the interoperation capability according to whether the access control and the mobility management function entity AMF receiving the session establishment request support the interoperation interface.

Or receiving an indication of an access control and mobility management function entity AMF serving the terminal, or an indication of a session management function entity SMF serving the visited network of the terminal, determining the access control and mobility management function entity Does AMF support interoperability? The indication of the session management function entity SMF of the visited network of the terminal may include: the session management function entity SMF of the visited network is carried in the creation session request for characterizing the access control and mobility management Whether the functional entity AMF supports the interoperability capability indication; or the indication provided by the session management function entity SMF of the visited network for characterizing the EPS system bearer identity.

Among them, SMF supports PGW-C function.

In addition, for determining the registration mode of the terminal in S101, the registration mode of the terminal may be updated during the movement of the terminal; if the registration mode of the terminal changes, according to the change of the terminal provided by the received AMF The registration mode determines the registration mode of the terminal.

After the execution of S101, the process continues to S102, where S102 specifically includes:

When the registration mode of the terminal is a single registration mode, mapping of QoS parameters between different systems is completed. Specifically, when the registration mode of the terminal is a single registration mode, mapping of QoS parameters between the 5G system and the EPS system in the mobile network is performed. Alternatively, when the access control and mobility management function entity AMF supports the interoperation interface, mapping of QoS parameters between different systems is completed.

If the session connection is established in the 5G system, the QoS parameter corresponding to the session connection is mapped to the QoS parameter of the EPS system; if the session connection is established in the EPS system, the QoS parameter corresponding to the session connection is mapped to the 5G system. QoS parameters.

In addition, when the registration mode of the terminal is the dual registration mode, mapping of QoS parameters between different systems is not completed. Specifically, when the registration mode of the terminal is the dual registration mode, mapping of QoS parameters between the 5G system and the EPS system in the mobile network is not performed.

By adopting the technical solution in this embodiment, when the registration mode of the terminal is a single registration mode, that is, when the terminal is only registered in the 5G system or the EPS system or the network side device supports the interoperability, the 5G system and the EPS system are executed. The mapping between the QoS parameters ensures that when the terminal moves between the EPS system and the 5G system, the session connection of the terminal is always anchored at the same user plane anchor point; when the registration mode of the terminal is the dual registration mode, that is, the terminal When registering in the 5G system or the EPS system at the same time, the session connection of the terminal is always anchored on the same user plane anchor point, and the mapping of the QoS parameters between the 5G system and the EPS system in the mobile network need not be performed. Therefore, when the terminal moves between different systems in the mobile network, the continuity of the session connection of the terminal can still be guaranteed.

For a better understanding of the present invention, further exemplified, referring to FIG. 2, FIG. 2 is a session management method in a session establishment process of a terminal, including:

S201. The AMF negotiates with the terminal and determines a registration mode of the terminal.

S202. The SMF receives the session connection request initiated by the terminal by using the AMF. After the SMF receives the session connection request initiated by the terminal, the SMF needs to determine the registration mode of the terminal that sends the session connection request. There are two ways to determine the registration mode of the terminal.

Two ways to determine the registration mode of the terminal can be:

The first method is determined according to the registration mode information of the terminal provided by the AMF.

Specifically, the terminal first sends a session establishment request message, and when the AMF forwards the session establishment request message to the SMF, the AMF indicates to the SMF the registration mode information of the terminal that sends the session establishment request; or the SMF may respond according to the received AMF. The registration mode of the terminal returned by the session management request of the SMF determines the registration mode of the terminal.

The second method is determined according to the registration mode information provided by the terminal.

Specifically, when the SMF receives the session establishment request of the terminal, the session establishment request message sent by the terminal carries the registration mode information of the terminal.

S203. The SMF determines, according to the registration mode of the terminal, whether to complete mapping of different inter-system QoS parameters when creating a session connection for the terminal. The specific determination manner is the same as the determination manner in the foregoing S102.

Referring to FIG. 3, the terminal in FIG. 3 has established a session connection that supports switching between the 5G system and the EPS system. The specific session management method includes:

S301. Establish a session connection.

S302. During the moving process of the terminal, the terminal performs a registration update process.

S303. In the registration update process, when the registration mode of the terminal changes, the SMF determines the registration mode of the terminal according to the changed registration mode of the terminal provided by the received AMF.

The method for determining the registration mode of the terminal includes:

In the first method, after determining that the registration mode of the terminal changes, the AMF determines the SMF supporting the interoperation according to the ID (identification) of the SMF corresponding to the session connection in the context information of the terminal; the AMF notifies the SMF that supports the interoperation to the changed SMF. Registration mode; the SMF determines the changed registration mode of the terminal accordingly.

In the second manner, after determining that the registration mode of the terminal changes, the terminal initiates a session modification process to notify the SMF that the registration mode changes; the SMF determines the changed registration mode of the terminal according to the determination. If the SMF supports interoperation, proceed to S304.

S304. The SMF determines, according to the changed registration mode of the terminal, whether to complete mapping of different inter-system QoS parameters when creating a session connection for the terminal. The specific determination manner is the same as the determination manner in the foregoing S102.

Referring to FIG. 4, the specific execution steps of the PDU session management in the PDU (Packet Data Unit) session establishment process are as follows:

S401. The AMF receives a PDU session establishment request sent by the terminal.

S402. The AMF requests the SMF to create a PDU session, and indicates to the SMF whether the interoperability is supported by the SMF in the session establishment request.

S403. The SMF determines whether the AMF interface supports interoperability according to whether the AMF provided by the AMF, that is, whether the N26 interface is supported, and whether to complete mapping of QoS parameters between different systems. When the AMF supports interoperability, the mapping of QoS parameters between different systems is completed.

S404. Complete PDU session establishment according to an existing process.

Alternatively, referring further to FIG. 5A, the specific steps for performing PDU session management during the PDU session establishment process are as follows:

S501A, the UE (User Equipment) initiates a PDU session establishment process in the visited network VPLMN (PLMN: Public Land Mobile Network, Public Land Mobile Network), and the AMF of the visited network receives the PDU session sent by the UE. Create a request.

S502A. If the AMF determines that a PDU session to the home SMF needs to be established for the UE, that is, the anchor point of the PDU session is in the home network, the AMF selects the V-SMF (visited SMF) and the H-SMF according to the prior art. SMF), then send a session establishment request to the V-SMF, the request message can carry the interoperability of the network support, that is, whether the AMF supports the N26 interface.

S503A: After receiving the AMF request, the V-SMF sends a create session request to the H-SMF, where the request carries a prompt for whether the AMF in the visited network supports interoperability, and the prompt may be received from the AMF or may be based on the V. - Static configuration on the SMF is obtained, for example, whether the access control and mobility management function entity AMF carried in the V-SMF creation session request supports the interoperability capability indication, or the bearer identifier of the EPS system provided by the V-SMF Instructions.

S504A: After receiving the V-SMF creation session request, the H-SMF determines whether to complete the mapping of the QoS parameters between different systems according to whether the AMF supports the interoperation capability, that is, whether the AMF supports the N26 interface. When the AMF supports interoperability, the mapping of QoS parameters between different systems is completed.

S505A completes the PDU session establishment according to the existing process.

Or, referring to FIG. 5B, the specific steps for performing PDU session management in the PDU session establishment process are as follows:

S501B: The UE initiates a PDU session establishment process.

S502B: After receiving the PDU session establishment request sent by the UE, the AMF sends a PDU session establishment request to the SMF. If the UE is now on the visited network, the AMF sends a PDU Session Setup Request to the V-SMF.

S503B, after receiving the request, the SMF or the V-SMF sends a message to the AMF requesting the AMF to allocate an EBI (EPS bearer ID) for the session.

S504B. The AMF determines whether to allocate an EBI for the PDU session according to the interoperability supported by the AMF. If the AMF supports the N26 interface, the AMF allocates, otherwise it does not allocate. The result of the assignment is returned to the SMF or V-SMF via the response.

S505B: The SMF determines whether to perform QoS parameter mapping to the EPS system according to the EBI allocation situation, and if it is allocated, executes, otherwise it is not executed. Based on the EBI allocation, the V-SMF determines the interoperability supported by the network and then sends the interoperability and/or EBI supported by the network to the H-SMF.

S506B: If the H-SMF receives the EBI from the V-SMF, performs QoS parameter mapping to the EPS system. If the interoperability capability indication supported by the network does not support N26, the QoS parameter mapping to the EPS system is not performed.

S507B completes the PDU session establishment according to the existing process.

Referring to FIG. 6, a second embodiment of the present invention provides a session management apparatus, which is applied to a mobile network, where the apparatus includes:

The first determining module 601 is configured to determine a registration mode of the terminal that sends the session establishment request or determine whether the network side device that receives the session establishment request sent by the terminal supports interoperability;

The second determining module 602 is configured to determine, when the registration mode is a single registration mode, or when the network side device supports the interoperation capability, to complete mapping of different inter-system QoS parameters when creating a session connection for the terminal.

The first determining module 601 includes a first determining submodule or a second determining submodule;

The first determining module sub-module determines that the terminal is in a single registration mode or a dual registration mode according to the registration mode information of the terminal provided by the AMF. Specifically, the first determining submodule is specifically configured to determine a registration mode of the terminal according to the registration mode information of the terminal that is provided when the received AMF forwards the session establishment request. Alternatively, the first determining submodule determines the registration mode of the terminal according to the registration mode of the terminal returned by the received AMF in response to the session management request of the SMF. Or the second determining submodule determines, according to the received registration mode information that the terminal carries in the session establishment request message, that the terminal is in a single registration mode or a dual registration mode. The apparatus can also include a receiving module for receiving a session establishment request.

Or the first determining module 601 is specifically configured to determine, according to the access control that receives the session establishment request, whether the mobility management function entity AMF supports an interoperation interface, and determine the access control and mobility management function entity AMF. Whether to support interoperability.

Or the first determining module 601 is specifically configured to:

Receiving an indication of an access control and mobility management function entity AMF serving the terminal, or an indication of a session management function entity SMF serving the visited network of the terminal, determining whether the access control and mobility management function entity AMF is Support interoperability. The indication of the session management function entity SMF of the visited network that serves the terminal includes: the session management function entity SMF of the visited network carries the access control request for characterizing the access control and mobility management Whether the functional entity AMF supports the interoperability capability indication; or the indication provided by the session management function entity SMF of the visited network for characterizing the EPS system bearer identity.

Among them, SMF supports PGW-C function.

In addition, the session management apparatus further includes a third determining module, where the registration mode of the terminal may be updated during the movement of the terminal, and the third determining module is configured to: according to the receiving mode change of the terminal, according to the receiving The changed registration mode of the terminal provided by the access control and mobility management function entity AMF determines the registration mode of the terminal.

The second determining module 602 is further configured to complete mapping of QoS parameters between different systems when the registration mode of the terminal is a single registration mode. Specifically, when the registration mode of the terminal is a single registration mode, mapping of QoS parameters between the 5G system and the EPS system in the mobile network is performed. Or the second determining module 602 is specifically configured to complete mapping of QoS parameters between different systems when the access control and mobility management function entity AMF supports the interoperation interface.

In addition, when the registration mode of the terminal is the dual registration mode, mapping of QoS parameters between different systems is not performed. Specifically, when the registration mode of the terminal is the dual registration mode, mapping of QoS parameters between the 5G system and the EPS system in the mobile network is not performed.

The working principle of the session management apparatus in this embodiment is the same as that of the foregoing session management method, and details are not described herein again.

Since the technical solution in the embodiment is adopted, when the registration mode of the terminal is a single registration mode, that is, when the terminal is only registered in the 5G system or the EPS system, or when the network side device supports the interoperability, the 5G system and the 5G system are executed. The mapping of the QoS parameters between the EPS systems ensures that when the terminal moves between the EPS system and the 5G system, the session connection of the terminal is always anchored at the same user plane anchor point; when the registration mode of the terminal is the dual registration mode, That is, when the terminal is registered in the 5G system or the EPS system at the same time, the session connection of the terminal is always anchored on the same user plane anchor point, and the mapping of the QoS parameters between the 5G system and the EPS system in the mobile network does not need to be performed. Therefore, when the terminal moves between different systems in the mobile network, the continuity of the session connection of the terminal can still be guaranteed.

Embodiment 3 of the present invention provides a computer apparatus, the apparatus comprising a processor, the processor being configured to implement the steps of the session management method as described in the foregoing embodiments when executing a computer program stored in a memory.

Embodiment 4 of the present invention provides a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of the session management method as described in the foregoing embodiments.

Embodiment 5 of the present invention provides a communication device, where the device includes:

The specific implementation of the communication device can also be referred to the session management method and the implementation of the session management device.

The technical solutions in the foregoing embodiments of the present invention have at least the following technical effects or advantages:

While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

A session management method, the method comprising:

Determining a registration mode of the terminal that sends the session establishment request or determining whether the network side device that receives the session establishment request sent by the terminal supports the interoperation capability;

When the registration mode is the single registration mode or when the network side device supports the interoperation capability, it is determined that the mapping of the QoS parameters between different systems is completed when the session connection is created for the terminal.
The method of claim 1, wherein the determining a registration mode of the terminal that sends the session establishment request comprises:

Determining, according to the registration mode information of the terminal that is provided by the access control and the mobility management function entity AMF, that the terminal is in a single registration mode or a dual registration mode;

Or determining, according to the received registration mode information carried by the terminal in the session establishment request message, that the terminal is in a single registration mode or a dual registration mode.
The method according to claim 2, wherein the determining, according to the registration mode information of the terminal provided by the access control and mobility management function entity AMF, that the terminal is in a single registration mode or a dual registration mode, includes :

Determining the registration mode of the terminal according to the registration mode information of the terminal provided by the received access control and mobility management function entity AMF when forwarding the session establishment request.
The method of claim 1, wherein the determining whether the network side device that receives the session establishment request sent by the terminal supports interoperability includes:

Whether the access control and mobility management function entity AMF supports the interoperation capability is determined according to whether the access control and the mobility management function entity AMF receiving the session establishment request support the interoperation interface.
The method of claim 1, wherein the determining whether the network side device that receives the session establishment request sent by the terminal supports interoperability includes:

Receiving an indication of an access control and mobility management function entity AMF serving the terminal, or an indication of a session management function entity SMF serving the visited network of the terminal, determining whether the access control and mobility management function entity AMF is Support interoperability.
The method according to claim 5, wherein the indication of the session management function entity SMF of the visited network of the terminal comprises:

The session management function entity SMF of the visited network, in the creation session request, is used to indicate whether the access control and mobility management function entity AMF supports an interoperability capability indication; or the session management function entity SMF of the visited network An indication provided for characterizing the EPS system bearer identity.
The method according to any one of claims 1 to 4, wherein when the network side device supports interoperability, it is determined that different inter-system QoS parameters are completed when a session connection is created for the terminal. Mapping, including:

When the access control and mobility management function entity AMF supports the interoperation interface, mapping of QoS parameters between different systems is completed.
The method of claim 1, wherein the mapping of QoS parameters between different systems is completed, specifically comprising:

When the session connection is established in the 5G system, mapping the QoS parameter corresponding to the session connection to the QoS parameter of the EPS system; or

When the session connection is established in the EPS system, the QoS parameters corresponding to the session connection are mapped to the QoS parameters of the 5G system.
A session management apparatus is applied to a mobile network, characterized in that the apparatus comprises:

a first determining module, configured to determine a registration mode of the terminal that sends the session establishment request, or determine whether the network side device that receives the session establishment request sent by the terminal supports interoperability;

And a second determining module, configured to: when the registration mode is a single registration mode or when the network side device supports the interoperation capability, determine to perform mapping of different inter-system QoS parameters when creating a session connection for the terminal.
The apparatus of claim 9, wherein the first determining module comprises:

a first determining submodule, configured to determine, according to the registration mode information of the terminal that is provided by the access control and the mobility management function entity AMF, that the terminal is in a single registration mode or a dual registration mode; or

And a second determining submodule, configured to determine, according to the received registration mode information that the terminal carries in the session establishment request message, that the terminal is in a single registration mode or a dual registration mode.
The device according to claim 10, wherein the first determining submodule is specifically configured to:

Determining the registration mode of the terminal according to the registration mode information of the terminal provided by the received access control and mobility management function entity AMF when forwarding the session establishment request.
The device according to claim 9, wherein the first determining module is specifically configured to:

Whether the access control and mobility management function entity AMF supports the interoperation capability is determined according to whether the access control and the mobility management function entity AMF receiving the session establishment request support the interoperation interface.
The device according to claim 9, wherein the first determining module is specifically configured to:

Receiving an indication of an access control and mobility management function entity AMF serving the terminal, or an indication of a session management function entity SMF serving the visited network of the terminal, determining whether the access control and mobility management function entity AMF is Support interoperability.
The apparatus according to claim 13, wherein the indication of the session management function entity SMF of the visited network that serves the terminal comprises:

The session management function entity SMF of the visited network, in the creation session request, is used to indicate whether the access control and mobility management function entity AMF supports an interoperability capability indication; or

The indication provided by the session management function entity SMF of the visited network for characterizing the EPS system bearer identifier.
The device according to any one of claims 9 to 12, wherein the second determining module is specifically configured to:

When the access control and mobility management function entity AMF supports the interoperation interface, mapping of QoS parameters between different systems is completed.
The apparatus according to claim 9, wherein said mapping for completing QoS parameters between different systems comprises:

When the session connection is established in the 5G system, mapping the QoS parameter corresponding to the session connection to the QoS parameter of the EPS system; or

When the session connection is established in the EPS system, the QoS parameters corresponding to the session connection are mapped to the QoS parameters of the 5G system.
A communication device, characterized in that the device comprises:

A processor for reading a program in the memory, performing the following process:

Determining a registration mode of the terminal that sends the session establishment request or determining whether the network side device that receives the session establishment request sent by the terminal supports the interoperation capability;

When the registration mode is a single registration mode or when the network side device supports the interoperation capability, determining to perform mapping of different inter-system QoS parameters when creating a session connection for the terminal;

A transceiver for receiving and transmitting data under the control of a processor.
A computer readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor to perform the steps of the method of any of claims 1-8.