CN111405553A - Method and device for establishing session based on 5G network - Google Patents
Method and device for establishing session based on 5G network Download PDFInfo
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- H04W12/06—Authentication
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Abstract
The invention relates to the field of communication, and discloses a method and a device for establishing a session based on a 5G network, which are used for solving the problem of waste of system resources in the 5G network.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for establishing a session based on a 5G network.
Background
Referring to fig. 1, a current standard 5G network at least includes a trusted wireless local area network (TrustedW L AN), AN Access and Mobility Management Function (AMF), a Session Management Function (SMF), and a User Plane Function (UPF).
In the 5G standard evolution process, a related protocol provides that User Equipment (UE) which does not support a 5G Non-access stratum (NAS) signaling protocol can access a 5G core network through a Trusted W L AN so as to use corresponding services.
As shown in fig. 1, the Trusted W L AN includes two entities, which are a Trusted W L AN Access Point (TWAP) and a Trusted Wlan Interworking Function (TWIF), respectively.
In the process of actually providing services, when the UE attaches to the 5G network, the TWIF establishes a Protocol Data Unit (PDU) session connection to the 5G core network for the UE and allocates corresponding resources, regardless of the service requirement of the UE. However, this is not completely consistent with the real life scenario, and sometimes the UE does not require immediate use of the service after attaching to the 5G network, so the existing operation mode of TWIF causes a serious PDU resource waste in case of an excessive number of UEs.
Disclosure of Invention
The embodiment of the invention provides a method and a device for establishing a session based on a 5G network, which are used for solving the problem of system resource waste in the 5G network.
The embodiment of the invention provides the following specific technical scheme:
a method for establishing a session based on a 5G network comprises the following steps:
in the process that User Equipment (UE) is attached to a 5G network, a trust wireless local area network interaction function entity TWIF obtains a 5G session identifier set corresponding to the UE;
when the TWIF determines that the 5G session identification indicates that the UE needs to use 5G network service, after the UE is successfully registered, keeping a first connection between the TWIF and an access and mobility management function (AMF) entity aiming at the UE;
the TWIF determines a session type corresponding to the 5G session identification, and establishes a Protocol Data Unit (PDU) session for the UE according to the session type between the TWIF and the AMF based on the first connection.
Optionally, the obtaining, by the TWIF, the 5G session identifier set corresponding to the UE includes:
the TWIF receives a 5G session identifier which is sent by a trusted wireless local area network access point (TWAP) and is set corresponding to the UE, and the 5G session identifier is set by the TWIF in the process that the UE is attached to a 5G network and is sent to the TWAP.
Optionally, before maintaining the first connection between the TWIF and the AMF for the UE, further comprising:
the TWIF further acquires identity authentication information of the UE from a Trusted WLAN Access Point (TWAP);
and the TWIF triggers and completes the registration process of the UE among the TWIF, the AMF and an authorization service function entity (AUSF) based on the identity authentication information.
Optionally, further comprising:
in the process that the UE is attached to the 5G network, if the TWIF obtains a 5G session identifier set corresponding to the UE and the 5G session identifier indicates that the UE does not need to use 5G network service, after the UE is successfully registered, the TWIF releases the first connection when the first connection maintaining time reaches a set threshold.
Optionally, further comprising:
and in the process that the UE is attached to the 5G network, if the TWIF does not acquire the 5G session identifier set by the corresponding UE, the TWIF releases the first connection after the UE is successfully registered.
Optionally, the determining, by the TWIF, a session type corresponding to the 5G session identifier, and establishing, based on the first connection, a PDU session for the UE according to the session type between the TWIF and the AMF includes:
if the session type corresponding to the 5G session identifier is a new service, the TWIF establishes a PDU session between the TWIF and the AMF based on the first connection, and sets corresponding first PDU session related parameters for the UE, wherein the first PDU session related parameters are used for indicating system resources allocated to the UE by a 5G network;
if the session type corresponding to the 5G session identifier is handover service, the TWIF establishes a PDU session between the TWIF and the AMF based on the first connection, acquires an original PDU session related parameter configured in an original network attached to the UE before handover, expands the original PDU session related parameter, and acquires a second PDU session related parameter set for the UE according to an expansion result, wherein the second PDU session related parameter is used for indicating system resources allocated to the UE by the original network and system resources allocated to the UE by the 5G network.
An apparatus for establishing a session based on a 5G network, comprising a processor and a memory, the processor being configured to read a program stored in the memory and perform the following operations:
the method comprises the steps that in the process that User Equipment (UE) is attached to a 5G network, a 5G session identifier corresponding to the UE is obtained;
when the 5G session identification indicates that the UE needs to use 5G network service, after the UE is successfully registered, keeping a first connection between the device and an access and mobility management function (AMF) entity aiming at the UE;
and determining a session type corresponding to the 5G session identifier, and establishing a Protocol Data Unit (PDU) session for the UE according to the session type between the device and the AMF based on the first connection.
Optionally, when the 5G session identifier set by the UE is acquired, the processor is configured to:
and receiving a 5G session identifier which is sent by a trusted wireless local area network access point (TWAP) and corresponds to the UE setting, wherein the 5G session identifier is set by the UE in the process of attaching to the 5G network and is sent to the TWAP.
Optionally, before maintaining the first connection between the apparatus and the AMF for the UE, the processor is further configured to:
further acquiring identity authentication information of the UE from a trusted wireless local area network access point TWAP;
and triggering and completing the registration process of the UE among the device, the AMF and an AUSF (authorization service function entity) based on the identity authentication information.
Optionally, the processor is further configured to:
in the process that the UE is attached to the 5G network, if a 5G session identifier set corresponding to the UE is obtained and the 5G session identifier indicates that the UE does not need to use 5G network service, after the UE is successfully registered, when the first connection maintaining time reaches a set threshold value, releasing the first connection.
Optionally, the processor is further configured to:
and in the process that the UE is attached to the 5G network, if the 5G session identifier corresponding to the UE is not acquired, releasing the first connection after the UE is successfully registered.
Optionally, the processor is configured to determine a session type corresponding to the 5G session identifier, and based on the first connection, when a PDU session is established for the UE according to the session type between the apparatus and the AMF, the processor is configured to:
if the session type corresponding to the 5G session identifier is a new service, establishing a PDU session between the device and the AMF based on the first connection, and setting corresponding first PDU session related parameters for the UE, wherein the first PDU session related parameters are used for indicating system resources allocated to the UE;
if the session type corresponding to the 5G session identifier is handover service, a PDU session is established between the device and the AMF based on the first connection, original PDU session related parameters configured in an original network attached to the UE before handover are obtained, the original PDU session related parameters are expanded, second PDU session related parameters set for the UE are obtained according to an expansion result, and the second PDU session related parameters are used for indicating system resources distributed to the UE by the original network and system resources distributed to the UE by the 5G network.
A communications apparatus comprising one or more processors; and
one or more computer-readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform the method of any of claims 1-6.
In the embodiment of the invention, when the UE is attached to the 5G network, the 5G session identifier is sent to the TWIF, and the TWIF determines that the UE needs to use 5G network service according to the 5G session identifier, then the UE keeps the first connection established for the UE after completing registration, and establishes the PDU session for the UE based on the first connection.
Drawings
FIG. 1 is a schematic diagram of a 5G network in the prior art;
fig. 2 is a schematic diagram illustrating a PDU session establishment process based on a 5G network in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a TWIF functional structure according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1, in practical application, a UE cannot directly access to a 5G core network through a W L AN via AN N1 interface, but must access to AN AMF via authentication of AN N1 interface on behalf of a TWIF, so as to solve the problem of PDU resource waste in the 5G network, in AN embodiment of the present invention, when the UE is attached to the 5G network, in a process of triggering AN authentication procedure, a 5G session identifier is used to explain a PDU resource usage requirement of the UE to a network side, so that the TWIF may determine whether to establish a PDU session according to AN application requirement of a terminal.
Preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 2, in the embodiment of the present invention, a detailed procedure for establishing a PDU session between a UE and a TWIF is as follows:
and 200, attaching the UE to the credit W L AN and triggering AN authentication process.
Specifically, the UE may establish a coupling with the trust W L AN, and initiate AN Extensible Authentication Protocol (EAP) authentication procedure.
Step 201: the TWAP sends an identity authentication information request message to the UE.
The specific TWAP may request the UE to send Identity authentication information using an EAP-Req/Identity message, where the Identity authentication information at least includes a user Identity type of the UE.
Step 202: and the UE returns an identity authentication information response message to the TWAP, the identity authentication information response message carries identity authentication information of the UE and a 5G session identifier set by the UE, and the 5G session identifier is used for representing the use requirement of the 5G network of the UE.
Specifically, the UE may add a 5G Session identifier to the Identity authentication information response message (e.g., EAP-Res/Identity message), which is denoted as 5G _ Session _ flag.
The value of 5G _ Session _ flag is divided into three types, namely new service (Initial), Handover service (Handover) and No service (No). These three values correspond to the follow-on request parameter that is originally in the NAS protocol based registration request message (e.g., the RegistrationRequest message) of the TWIF fabric.
Step 203: and the TWAP sends the identity authentication information of the UE and the 5G session identifier to the TWIF.
Step 204: the TWIF triggers and completes registration of the UE in the 5G network based on the identity authentication information of the UE.
Specifically, the TWIF performs identity Authentication on the UE based on the identity Authentication information of the UE between the TWIF, the AMF, and an authorization service function entity (AUSF), so as to trigger and complete a registration procedure of the UE.
No matter whether the UE has not previously accessed the network or accessed another network (e.g., 3GPP), the UE successfully attaches to the 5G network after the registration procedure is completed.
In the embodiment of the present invention, as described above, the values of the 5G _ Session _ flag are divided into three types: initia, Handover, and No, where Initial indicates that the UE is newly accessed to the 5G network, in which case the UE needs to use the 5G network service, Handover indicates that the UE is handed over from another network to the 5G network, in which case the UE also needs to use the 5G network service, and No indicates that the UE does not need to use the 5G network service.
Correspondingly, if the TWIF obtains the 5G session identifier set by the UE from the TWAP, the follow-on request parameter in the registration request message is set to the value corresponding to the 5G session identifier, so that the AMF can be notified whether to immediately release the N2 connection after the registration procedure is finished.
Step 205: the TWIF determines whether the UE indicates to use the 5G network service based on the obtained 5G session identifier, if so, performs step 206-step 208, otherwise, performs step 209-step 210
Specifically, as described above, the values of the 5G _ Session _ flag are divided into three types: the system comprises an Initial, a Handover and a No, wherein the Initial and the Handover both indicate that the UE needs to use the 5G network service, and the No indicates that the UE does not need to use the 5G network service.
On the other hand, there is also a case where the TWIF does not obtain the 5G session identity, which may occur because the 5G session identity is not set by the UE during the attachment to the 5G network, in which case the TWIF may also consider that the UE does not need to use the 5G network service.
Step 206: TWIF maintains a corresponding N2 connection between the TWIF and the AMF for the UE after the UE completes registration.
Since the 5G session identity of the UE indicates that the UE needs to use 5G network services, and therefore subsequently a PDU session needs to be established over the N2 connection, the TWIF cannot perform resource release for the UE.
Step 207: the TWIF sends a PDU session establishment request message to the AMF, where the PDU session establishment request message carries a session type set corresponding to the 5G session identifier.
Specifically, the TWIF may correspond to the 5G session identifier, and set a corresponding value for a Request Type (Request Type) parameter in the PDU session establishment Request message, where the Request Type parameter is used to indicate a Type of the PDU session to be established, and is also referred to as a session Type.
For example, if the 5G session is identified as Initial, the TWIF may set the request type parameter to "InitialRequest".
For another example, if the 5G Session is identified as Handover, the TWIF may set the Request type parameter to "ExistingPDU Session Request".
Step 208: TWIF establishes a corresponding PDU session according to the session type based on the N2 connection between the TWIF and the AMF.
Specifically, when step 208 is executed, the following methods may be adopted, but not limited to:
1) if the session type corresponding to the 5G session identifier is Initial, the TWIF establishes a PDU session between the TWIF and the AMF based on the N2 connection, and sets a corresponding first PDU session related parameter for the UE, where the first PDU session related parameter is used to indicate system resources allocated by the TWIF to the UE.
For example, if 5G _ Session _ Flag is the Initial Flag, after the registration procedure ends and the UE successfully attaches to the 5G Network, the TWIF may trigger a PDU Session Establishment procedure on behalf of the UE, that is, the TWIF may send a PDU Session Establishment Request message to the AMF, and set a Request Type parameter in the PDU Session Establishment Request message to the AMF after the Initial Request is set, and set a completely new first PDU Session related parameter corresponding to the UE during the PDU Session Establishment procedure, where the first PDU Session related parameter includes at least a quality of service (QoS) and a Data Network Name (DNN) of the UE, where the QoS indicates a bandwidth that the UE can use in the 5G Network, and the DNN indicates a Data Network to which the UE is to connect in the 5G Network, such as the Internet or an enterprise Network. And, the TWIF may further extend the session related parameters of the first PDU, and add the identification information of the UPF to TWIF N3 interface downlink tunnel allocated to the UE for use in the 5G network, so as to establish the TWIF to TWIF N3 tunnel.
2) If the session type corresponding to the 5G session identifier is a Handover (e.g., from 3GPP access network), the TWIF establishes a PDU session between the TWIF and the AMF based on the N2 connection, obtains an original PDU session related parameter configured in an original network to which the UE is attached before Handover, extends the original PDU session related parameter, and obtains a second PDU session related parameter set for the UE according to an extension result, where the second PDU session related parameter is used to indicate system resources allocated by the original network to the UE and the TWIF to the system resources allocated by the UE.
For example, assuming that 5G _ Session _ flag is Handover (from 3GPP access network), after the registration procedure ends and the UE successfully attaches to the 5G network, the TWIF triggers the PDU Session Establishment procedure on behalf of the UE, that is, the TWIF sends a PDU availability Request message to the AMF, sets the Request Type parameter in the PDU availability Request message as the Existing PDU Session Request, and the TWIF first obtains the original PDU Session related parameter used by the UE in 3GPP,
the original PDU session related parameters at least comprise service quality (QoS) and Data Network Name (DNN) of the UE, wherein the QoS indicates the bandwidth which can be used by the UE in the 3GPP network, the DNN indicates the data network to which the UE is connected in the 3GPP network, such as Internet or enterprise network, then the TWIF expands the original PDU session related parameters, and adds identification information of a downlink tunnel of an N3 interface from UPF to TWIF which is allocated for the UE and used in the 5G network, so that the original PDU session related parameters are expanded into second PDU session related parameters, resource fusion of the 3GPP network and the 5G network is realized, and the continuity of PDU session between the 3GPP network and the 5G network is effectively maintained.
Step 209: the TWIF informs the AMF not to establish a PDU session.
Step 210: the TWIF releases the corresponding N2 connection for the UE.
Specifically, in the process that the UE attaches to the 5G network, if the TWIF acquires a 5G session identifier set corresponding to the UE and the 5G session identifier indicates that the UE does not need to use 5G network services, after the UE is successfully registered, the TWIF releases the first connection when the first connection maintaining duration reaches a set threshold.
For example, assuming that 5G _ Session _ flag is No, after the registration procedure is finished and the UE is successfully attached to the 5G network, the TWIF monitors an N2 connection corresponding procedure timer established for the UE, and after the procedure timer expires, releases the N2 connection between the TWIF and the AMF.
On the other hand, in a case that the TWIF does not acquire the 5G session identifier set by the UE during the UE attaching to the 5G network, after the registration procedure is finished and the UE successfully attaches to the 5G network, the TWIF may immediately release the N2 connection established for the UE between the TWIF and the AMF.
Based on the above embodiments, referring to fig. 3, in the embodiment of the present invention, the TWIF at least includes a processor 30 and a memory 31, where the processor 30 is configured to read a program stored in the memory 31 and perform the following operations:
the method comprises the steps that in the process that User Equipment (UE) is attached to a 5G network, a 5G session identifier corresponding to the UE is obtained;
when the 5G session identification indicates that the UE needs to use 5G network service, after the UE is successfully registered, keeping a first connection between the device and an access and mobility management function (AMF) entity aiming at the UE;
and determining a session type corresponding to the 5G session identifier, and establishing a Protocol Data Unit (PDU) session for the UE according to the session type between the device and the AMF based on the first connection.
Optionally, when the 5G session identifier set by the UE is acquired, the processor 30 is configured to:
and receiving a 5G session identifier which is sent by a trusted wireless local area network access point (TWAP) and corresponds to the UE setting, wherein the 5G session identifier is set by the UE in the process of attaching to the 5G network and is sent to the TWAP.
Optionally, before maintaining the first connection between the apparatus and the AMF for the UE, the processor 30 is further configured to:
further acquiring identity authentication information of the UE from a trusted wireless local area network access point TWAP;
and triggering and completing the registration process of the UE among the device, the AMF and an AUSF (authorization service function entity) based on the identity authentication information.
Optionally, the processor 30 is further configured to:
in the process that the UE is attached to the 5G network, if a 5G session identifier set corresponding to the UE is obtained and the 5G session identifier indicates that the UE does not need to use 5G network service, after the UE is successfully registered, when the first connection maintaining time reaches a set threshold value, releasing the first connection.
Optionally, the processor 30 is further configured to:
and in the process that the UE is attached to the 5G network, if the 5G session identifier corresponding to the UE is not acquired, releasing the first connection after the UE is successfully registered.
Optionally, the session type corresponding to the 5G session identifier is determined, and based on the first connection, a PDU session is established for the UE according to the session type between the apparatus and the AMF, and the processor 30 is configured to:
if the session type corresponding to the 5G session identifier is a new service, establishing a PDU session between the device and the AMF based on the first connection, and setting corresponding first PDU session related parameters for the UE, wherein the first PDU session related parameters are used for indicating system resources allocated to the UE;
if the session type corresponding to the 5G session identifier is handover service, a PDU session is established between the device and the AMF based on the first connection, original PDU session related parameters configured in an original network attached to the UE before handover are obtained, the original PDU session related parameters are expanded, second PDU session related parameters set for the UE are obtained according to an expansion result, and the second PDU session related parameters are used for indicating system resources distributed to the UE by the original network and system resources distributed to the UE by the 5G network.
Based on the same inventive concept, embodiments of the present invention provide a communication apparatus, including one or more processors; and
one or more computer-readable media having instructions stored thereon, which when executed by the one or more processors, cause the apparatus to perform any of the methods described above.
In the embodiment of the invention, when the UE is attached to the 5G network, the 5G session identifier is sent to the TWIF, and the TWIF determines that the UE needs to use 5G network service according to the 5G session identifier, then the UE keeps the first connection established for the UE after completing registration, and establishes the PDU session for the UE based on the first connection.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments 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 encompass such modifications and variations.
Claims (13)
1. A method for establishing a session based on a 5G network is characterized by comprising the following steps:
in the process that User Equipment (UE) is attached to a 5G network, a trust wireless local area network interaction function entity TWIF obtains a 5G session identifier set corresponding to the UE;
when the TWIF determines that the 5G session identification indicates that the UE needs to use 5G network service, after the UE is successfully registered, keeping a first connection between the TWIF and an access and mobility management function (AMF) entity aiming at the UE;
the TWIF determines a session type corresponding to the 5G session identification, and establishes a Protocol Data Unit (PDU) session for the UE according to the session type between the TWIF and the AMF based on the first connection.
2. The method of claim 1, wherein the TWIF obtaining a 5G session identity set for the UE comprises:
the TWIF receives a 5G session identifier which is sent by a trusted wireless local area network access point (TWAP) and is set corresponding to the UE, and the 5G session identifier is set by the TWIF in the process that the UE is attached to a 5G network and is sent to the TWAP.
3. The method of claim 1, wherein prior to maintaining the first connection between the TWIF and the AMF for the UE, further comprising:
the TWIF further acquires identity authentication information of the UE from a Trusted WLAN Access Point (TWAP);
and the TWIF triggers and completes the registration process of the UE among the TWIF, the AMF and an authorization service function entity (AUSF) based on the identity authentication information.
4. The method of claim 1, 2, or 3, further comprising:
in the process that the UE is attached to the 5G network, if the TWIF obtains a 5G session identifier set corresponding to the UE and the 5G session identifier indicates that the UE does not need to use 5G network service, after the UE is successfully registered, the TWIF releases the first connection when the first connection maintaining time reaches a set threshold.
5. The method of claim 1, 2, or 3, further comprising:
and in the process that the UE is attached to the 5G network, if the TWIF does not acquire the 5G session identifier set by the corresponding UE, the TWIF releases the first connection after the UE is successfully registered.
6. The method of claim 1, 2 or 3, wherein the TWIF determines a session type corresponding to the 5G session identification, and establishes a PDU session for the UE according to the session type between the TWIF and the AMF based on the first connection, comprising:
if the session type corresponding to the 5G session identifier is a new service, the TWIF establishes a PDU session between the TWIF and the AMF based on the first connection, and sets corresponding first PDU session related parameters for the UE, wherein the first PDU session related parameters are used for indicating system resources allocated to the UE by a 5G network;
if the session type corresponding to the 5G session identifier is handover service, the TWIF establishes a PDU session between the TWIF and the AMF based on the first connection, acquires an original PDU session related parameter configured in an original network attached to the UE before handover, expands the original PDU session related parameter, and acquires a second PDU session related parameter set for the UE according to an expansion result, wherein the second PDU session related parameter is used for indicating system resources allocated to the UE by the original network and system resources allocated to the UE by the 5G network.
7. An apparatus for establishing a session based on a 5G network, comprising a processor and a memory, wherein the processor is configured to read a program stored in the memory and perform the following operations:
the method comprises the steps that in the process that User Equipment (UE) is attached to a 5G network, a 5G session identifier corresponding to the UE is obtained;
when the 5G session identification indicates that the UE needs to use 5G network service, after the UE is successfully registered, keeping a first connection between the device and an access and mobility management function (AMF) entity aiming at the UE;
and determining a session type corresponding to the 5G session identifier, and establishing a Protocol Data Unit (PDU) session for the UE according to the session type between the device and the AMF based on the first connection.
8. The apparatus of claim 7, wherein the processor, in obtaining the 5G session identity configured for the UE, is configured to:
and receiving a 5G session identifier which is sent by a trusted wireless local area network access point (TWAP) and corresponds to the UE setting, wherein the 5G session identifier is set by the UE in the process of attaching to the 5G network and is sent to the TWAP.
9. The apparatus of claim 8, wherein prior to maintaining the first connection between the apparatus and the AMF for the UE, the processor is further to:
further acquiring identity authentication information of the UE from a trusted wireless local area network access point TWAP;
and triggering and completing the registration process of the UE among the device, the AMF and an AUSF (authorization service function entity) based on the identity authentication information.
10. The apparatus of claim 7, 8 or 9, wherein the processor is further to:
in the process that the UE is attached to the 5G network, if a 5G session identifier set corresponding to the UE is obtained and the 5G session identifier indicates that the UE does not need to use 5G network service, after the UE is successfully registered, when the first connection maintaining time reaches a set threshold value, releasing the first connection.
11. The apparatus of claim 7, 8 or 9, wherein the processor is further to:
and in the process that the UE is attached to the 5G network, if the 5G session identifier corresponding to the UE is not acquired, releasing the first connection after the UE is successfully registered.
12. The apparatus of claim 7, 8 or 9, wherein the processor is configured to determine a session type corresponding to the 5G session identifier, and to establish, between the apparatus and the AMF, a PDU session for the UE according to the session type based on the first connection, the processor being configured to:
if the session type corresponding to the 5G session identifier is a new service, establishing a PDU session between the device and the AMF based on the first connection, and setting corresponding first PDU session related parameters for the UE, wherein the first PDU session related parameters are used for indicating system resources allocated to the UE;
if the session type corresponding to the 5G session identifier is handover service, a PDU session is established between the device and the AMF based on the first connection, original PDU session related parameters configured in an original network attached to the UE before handover are obtained, the original PDU session related parameters are expanded, second PDU session related parameters set for the UE are obtained according to an expansion result, and the second PDU session related parameters are used for indicating system resources distributed to the UE by the original network and system resources distributed to the UE by the 5G network.
13. A communications apparatus comprising one or more processors; and
one or more computer-readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform the method of any of claims 1-6.
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