CN114040343B - Method and system for accessing WIFI equipment to 5G core network - Google Patents

Method and system for accessing WIFI equipment to 5G core network Download PDF

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CN114040343B
CN114040343B CN202111266561.2A CN202111266561A CN114040343B CN 114040343 B CN114040343 B CN 114040343B CN 202111266561 A CN202111266561 A CN 202111266561A CN 114040343 B CN114040343 B CN 114040343B
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core network
twif
access
n5cw
wifi
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CN114040343A (en
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刘涛
林巍
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Inspur Software Technology Co Ltd
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Inspur Software Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber data
    • H04W8/205—Transfer to or from user equipment or user record carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a method and a system for accessing a WIFI device to a 5G core network, wherein the method comprises the following steps: receiving an access requirement of wireless local area network N5CW WIFI equipment without 5G access capability; and triggering signaling interaction and data interaction with a 5G core network based on the access requirement of the N5CW WIFI equipment, so that the N5CW WIFI equipment is accessed to the 5G core network. According to the invention, the TWAN equipment is additionally arranged between the N5CW WIFI equipment and the existing 5G core network, so that the N5CW WIFI equipment can be accessed to the 5G core network, the existing network equipment does not need any hardware change, and meanwhile, the defect of insufficient uplink bandwidth of the 5G network can be solved through the access of the WIFI equipment.

Description

Method and system for accessing WIFI equipment to 5G core network
Technical Field
The invention relates to the technical field of wireless communication, in particular to a method and a system for accessing a WIFI device to a 5G core network.
Background
Currently, a 5G (The 5th Generation Mobile Communication Technology, fifth Generation Mobile Communication Technology) core network adopts a standard networking mode, which includes modes of a 5GC core network, a 5G NR (New Radio, new air interface) base station, and a 5G dedicated terminal for networking.
The dedicated 5G terminal accesses the 5GC core network through NAS (Non Access Stratum) messages and standard NGAP (NG Application Protocol, application layer Protocol of N2 interface) procedures. Along with the accelerated establishment of the 5G network, the commercial terminal synchronously supports 5G upgrading, but no matter a factory, a park or a wide common consumer, a plurality of WIFI devices are still used, if the WIFI devices can be accessed into the 5G network on the premise of not modifying and upgrading the WIFI devices, firstly the utilization rate of the 5G network can be improved, secondly the 5G core network can be utilized to form unified management on the own devices of users, and finally the defect that the uplink bandwidth of the 5G network is insufficient can be overcome by accessing the WIFI devices. For a non-standard terminal, if a 5GC core network is desired to be accessed, a large amount of modification and upgrade are often required to be performed on existing network device hardware to achieve access of the non-standard terminal, so that the network construction cost is greatly increased.
Therefore, how to implement that the WIFI terminal without 5G access capability, that is, the N5CW WIFI device can be accessed to the 5GC core network, is a problem to be solved urgently.
Disclosure of Invention
The invention provides a method and a system for accessing a WIFI device to a 5G core network, which are used for solving the defect that an N5CW WIFI device in the prior art cannot be accessed to the 5G core network.
In a first aspect, the present invention provides a method for a WIFI device to access a 5G core network, including:
receiving an access requirement of a wireless local area network N5CW WIFI device without 5G access capability;
and triggering signaling interaction and data interaction with a 5G core network based on the access requirement of the N5CW WIFI equipment, so that the N5CW WIFI equipment is accessed to the 5G core network.
According to the method for accessing the WIFI equipment to the 5G core network, provided by the invention, the access requirement of the wireless local area network N5CW WIFI equipment without 5G access capability is received, and the method comprises the following steps:
determining that the N5CW WIFI device accesses the 5G core network through a Trusted WLAN Access Network (TWAN) device;
the TWAN equipment comprises a trust domain WLAN access point TWAP, a trust domain WLAN interaction function entity control plane TWIF-CP and a trust domain WLAN interaction function entity user plane TWIF-UP.
According to the method for accessing the WIFI equipment to the 5G core network, which is provided by the invention, based on the access requirement of the N5CW WIFI equipment, signaling interaction and data interaction with the 5G core network are triggered, so that the N5CW WIFI equipment is accessed to the 5G core network, and the method comprises the following steps:
the N5CW WIFI equipment is accessed through a hotspot provided by the TWAP, and the TWAP forwards data sent by the N5CW WIFI equipment to the TWIF-CP;
the TWIF-CP establishes connection with the 5G core network and carries out message interaction;
after the TWIF-CP establishes message connection with the 5G core network, the TWIF-CP establishes data channel connection with the TWIF-UP;
and the TWIF-UP receives the data forwarded by the TWAP and forwards a data message to a user plane functional entity UPF of the 5G core network through a GTP-U tunnel.
According to the method for accessing the WIFI equipment to the 5G core network, the TWIF-CP establishes connection with the 5G core network and carries out message interaction, and the method comprises the following steps:
the TWIF-CP establishes Stream Control Transmission Protocol (SCTP) connection with an access and mobility management functional entity (AMF) of the 5G core network;
and after receiving the access message sent by the TWAP, sending NAS message and NGAP message to the AMF.
According to the method for accessing the 5G core network by the WIFI equipment provided by the invention, after the TWIF-CP establishes message connection with the 5G core network, the TWIF-CP establishes data channel connection with the TWIF-UP, and the method comprises the following steps:
the TWIF-CP sends GPRS tunnel protocol user plane GTP-U interface information to the TWIF-UP through a user datagram protocol UDP interface;
and the TWIF-UP completes GTP-U tunnel encapsulation and decapsulation based on the GTP-U interface information.
According to the method for accessing the WIFI equipment to the 5G core network provided by the invention, based on the access requirement of the N5CW WIFI equipment, signaling interaction and data interaction with the 5G core network are triggered, so that the N5CW WIFI equipment is accessed to the 5G core network, and the method further comprises the following steps:
and after receiving the downlink data sent by the UPF, the TWIF-UP forwards a data message to the TWAP by removing the GTP-U tunnel.
In a second aspect, the present invention further provides a WIFI device accessing to a 5G core network system, including:
the access module is used for receiving the access requirement of the wireless local area network N5CW WIFI equipment without 5G access capability;
and the interaction module is used for triggering signaling interaction and data interaction with a 5G core network based on the access requirement of the N5CW WIFI equipment, so that the N5CW WIFI equipment is accessed to the 5G core network.
In a third aspect, the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of any one of the methods for accessing the WIFI device to the 5G core network when executing the program.
In a fourth aspect, the present invention further provides a non-transitory computer readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for accessing the 5G core network by the WIFI device as described in any one of the above.
In a fifth aspect, the present invention further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the method for the WIFI device to access the 5G core network are implemented.
According to the method and the system for the WIFI equipment to access the 5G core network, the TWAN equipment is additionally arranged between the N5CW WIFI equipment and the existing 5G core network, so that the N5CW WIFI equipment can access the 5G core network, the existing network equipment does not need any hardware change, and meanwhile, the defect of insufficient uplink bandwidth of the 5G network can be overcome through the access of the WIFI equipment.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic flowchart of a method for accessing a WIFI device to a 5G core network according to the present invention;
fig. 2 is an architecture diagram of a WIFI device accessing a 5G core network provided by the present invention;
fig. 3 is a schematic structural diagram of a WIFI device accessing a 5G core network system provided by the present invention;
fig. 4 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.
Fig. 1 is a schematic flowchart of a method for a WIFI device to access a 5G core network, as shown in fig. 1, including:
s1, receiving an access requirement of a wireless local area network N5CW WIFI device without 5G access capability;
and S2, based on the access requirement of the N5CW WIFI equipment, triggering signaling interaction and data interaction with a 5G core network, so that the N5CW WIFI equipment is accessed to the 5G core network.
The invention aims to access WIFI equipment without 5G access capability into the existing 5G core network, and the existing 5G core network performs signaling management and data interaction processing.
Specifically, because the current 5G network performs networking according to the core network, the base station, the 5G terminal and the transmission device, only the 5G terminal can be accessed to the 5G base station, and the 5G core network can only process signaling and data sent by the 5G base station. On the premise of not changing the service logic of the core Network, the invention provides a role of TWAN (Trusted WLAN Access Network) equipment in a 5G Network architecture to replace a base station, performs Access management on N5CW (Non-5G-Cable over WLAN, WLAN without 5G Access capability) WIFI equipment, and simulates the base station to send signaling and data which can be processed by the 5G core Network.
According to the invention, the TWAN equipment is additionally arranged between the N5CW WIFI equipment and the existing 5G core network, so that the N5CW WIFI equipment can be accessed to the 5G core network without hardware transformation of the existing network.
Based on the above embodiment, the present invention further proposes, before the device accesses:
determining that the N5CW WIFI device accesses the 5G core network through a trusted WLAN access network TWAN device;
the TWAN equipment comprises a trust domain WLAN access point TWAP, a trust domain WLAN interaction function entity control plane TWIF-CP and a trust domain WLAN interaction function entity user plane TWIF-UP.
Specifically, the TWAN device provided by the present invention specifically includes three network elements: the system comprises a TWAP (Trusted WLAN Access Point), a TWIF-CP (Trusted WLAN-Control Plane, trusted WLAN interactive Function entity Control Plane), a TWIF-UP (Trusted WLAN interactive Function-Control Plane, trusted WLAN interactive Function entity user Plane), and a system for jointly completing Access, management and data forwarding of WIFI equipment, wherein tunnel information interaction is performed between the TWIF-CP and the TWIF-UP, and the overall architecture is shown in FIG. 2.
The invention realizes the access control of a control plane and a user plane respectively in the butt joint with a 5G core network by respectively arranging three network elements of TWAP, TWIF-CP and TWIF-UP in TWAN equipment, and completes the simulation of the functions of a base station on the premise of not changing the existing 5G core network and an N5CW WIFI terminal.
Based on any of the above embodiments, triggering signaling interaction and data interaction with a 5G core network based on an access requirement of the N5CW WIFI device, so that the N5CW WIFI device accesses the 5G core network, including:
the N5CW WIFI equipment is accessed through a hotspot provided by the TWAP, and the TWAP forwards data sent by the N5CW WIFI equipment to the TWIF-CP;
the TWIF-CP establishes connection with the 5G core network and carries out message interaction;
after the TWIF-CP is in message connection with the 5G core network, the TWIF-CP and the TWIF-UP establish data channel connection;
and the TWIF-UP receives the data forwarded by the TWAP and forwards a data message to a user plane function entity UPF of the 5G core network through a GTP-U tunnel.
Wherein, the TWIF-CP establishes a connection with the 5G core network and performs message interaction, including:
the TWIF-CP establishes Stream Control Transmission Protocol (SCTP) connection with an access and mobility management functional entity (AMF) of the 5G core network;
and after receiving the access message sent by the TWAP, sending an NAS message and an NGAP message to the AMF.
After the TWIF-CP establishes the message connection with the 5G core network, the TWIF-CP establishes a data channel connection with the TWIF-UP, including:
the TWIF-CP sends GPRS tunnel protocol user plane GTP-U interface information to the TWIF-UP through a user datagram protocol UDP interface;
and the TWIF-UP completes GTP-U tunnel encapsulation and decapsulation based on the GTP-U interface information.
Specifically, according to the architecture principle in fig. 2, the present invention first provides a hot spot for a common N5CW WIFI device through a TWAP, forwards WIFI device data, and sends the WIFI device data to a TWIF-CP through a UDP (User Datagram Protocol) interface;
here, the TWIF-CP is responsible for signaling plane connection and control information interaction with the 5G core network;
the TWIF-CP and a core network AMF (Access and Mobility Management Function entity) network element perform SCTP (Stream Control Transmission Protocol) connection establishment; after receiving the access message sent by the TWAP, simulating to send NAS and NGAP messages, and triggering a core network terminal access flow. The 5G core network AMF here is the main module handling control plane messages and functions substantially similar to the access and mobility management functions of an MME (mobility management entity) in a 4G core network.
After the connection of the signaling plane is established, establishing data channel connection between the TWIF-CP and the TWIF-UP, sending GTP-U (GPRS Tunneling Protocol-User plane) tunnel information of a control signaling received by the TWIF-CP to the TWIF-UP by a UDP interface between the TWIF-CP and the TWIF-UP, and finishing GTP-U tunnel encapsulation and decapsulation by the TWIF-UP according to the interface information;
it should be noted that GTP-U is a tunneling protocol used between a pair of GTP-U tunnel end nodes, and encapsulates user data sent by a terminal device into T-PDUs over IP/UDP. A Tunnel Endpoint Identifier (TEID) assigned on each Endpoint indicates to which Tunnel a particular T-PDU belongs, and the TEID is locally assigned by the receiving end of the GTP Tunnel for use by the sending end.
And when the TWIF-UP receives the data of the TWAP, the GTP-U tunnel is packaged to forward the data message to a User Plane Function (UPF) of a core network. The 5G core network UPF here is responsible for all user plane functions, including: packet routing and forwarding, session points where external PDUs are interconnected to the data network, anchor points for intra-RAT/inter-RAT mobility, etc., and UPFs are equivalent to user plane functions in 4G core networks SGW and PGW.
The invention realizes the uplink data forwarding function of the N5CW WIFI device after accessing the 5G core network through three network elements in the TWAN device, the TWIF-CP undertakes the management of the control plane, and the TWIF-UP undertakes the management of the user plane.
Based on any of the above embodiments, triggering signaling interaction and data interaction with a 5G core network based on an access requirement of the N5CW WIFI device, so that the N5CW WIFI device accesses the 5G core network, further comprising:
and after receiving the downlink data sent by the UPF, the TWIF-UP forwards the data message to the TWAP by removing the GTP-U tunnel.
Specifically, with respect to the uplink transmission data, the downlink data sent by the 5G core network to the N5CW WIFI device includes:
and after the TWIF-UP receives the downlink data sent by the 5G core network UPF, removing the GTP-U tunnel and forwarding the original data message to the TWAP. It can be seen that the forwarding of the downlink data is a reciprocal process with respect to the forwarding of the uplink data, i.e. the processes of encapsulating the tunnel and decapsulating the tunnel are opposite.
The invention realizes the complete data transmission process after the N5CW WIFI equipment is accessed into the 5G core network by simulating the base station to forward the data in the downlink through the TWAN equipment.
The method for the WIFI equipment to access the 5G core network system provided by the invention is described below, and the method for the WIFI equipment to access the 5G core network system described below and the method for the WIFI equipment to access the 5G core network described above can be referred to correspondingly.
Fig. 3 is a schematic structural diagram of a WIFI device accessing a 5G core network system provided by the present invention, as shown in fig. 3, including: an access module 31 and an interaction module 32, wherein:
the access module 31 is configured to receive an access requirement of a wireless local area network N5CW WIFI device without a 5G access capability; the interaction module 32 is configured to trigger signaling interaction and data interaction with a 5G core network based on an access requirement of the N5CW WIFI device, so that the N5CW WIFI device accesses the 5G core network.
According to the invention, the TWAN equipment is additionally arranged between the N5CW WIFI equipment and the existing 5G core network, so that the N5CW WIFI equipment can be accessed to the 5G core network, the existing network equipment does not need any hardware change, and meanwhile, the defect of insufficient uplink bandwidth of the 5G network can be solved through the access of the WIFI equipment.
Based on the above embodiment, the system further includes a determining module 33, where the determining module 33 is configured to determine that the N5CW WIFI device accesses the 5G core network through a trusted WLAN access network TWAN device; the TWAN equipment comprises a trust domain WLAN access point TWAP, a trust domain WLAN interactive function entity control plane TWIF-CP and a trust domain WLAN interactive function entity user plane TWIF-UP.
The invention realizes the access control of a control plane and a user plane respectively in the butt joint with a 5G core network by respectively setting three network elements of TWAP, TWIF-CP and TWIF-UP in TWAN equipment, and completes the simulation of the functions of the base station on the premise of not changing the existing 5G core network and an N5CW WIFI terminal.
Based on any of the above embodiments, the interaction module 32 includes: a first interaction submodule 321, a second interaction submodule 322, a third interaction submodule 323, and a fourth interaction submodule 324, wherein:
the first interaction submodule 321 is configured to enable the N5CW WIFI device to access a hotspot provided by the TWAP, where the TWAP forwards data sent by the N5CW WIFI device to the TWIF-CP; the second interaction submodule 322 is configured to establish a connection between the TWIF-CP and the 5G core network and perform message interaction; the third interworking submodule 323 is configured to establish a data channel connection between the TWIF-CP and the TWIF-UP after the TWIF-CP establishes the message connection with the 5G core network; the fourth interaction submodule 324 is configured to forward, by the TWIF-UP, the data packet to the user plane functional entity UPF of the 5G core network through a GTP-U tunnel after receiving the data forwarded by the TWAP.
The second interaction submodule 322 is specifically configured to establish a stream control transmission protocol SCTP connection between the TWIF-CP and the access and mobility management functional entity AMF of the 5G core network; and after receiving the access message sent by the TWAP, sending NAS message and NGAP message to the AMF.
The third interaction submodule 323 is specifically configured to send, by the TWIF-CP through a user datagram protocol UDP interface, GPRS tunneling protocol user plane GTP-U interface information to the TWIF-UP; and the TWIF-UP completes GTP-U tunnel encapsulation and decapsulation based on the GTP-U interface information.
The invention realizes the uplink data forwarding function of the N5CW WIFI device after accessing the 5G core network through three network elements in the TWAN device, the TWIF-CP undertakes the management of the control plane, and the TWIF-UP undertakes the management of the user plane.
Based on any of the above embodiments, the interaction module 32 further includes a fifth interaction submodule 325, where the fifth interaction submodule 325 is specifically configured to, after the TWIF-UP receives the downlink data sent by the UPF, forward the data packet to the TWAP by removing the GTP-U tunnel.
The invention realizes the complete data transmission process after the N5CW WIFI equipment is accessed to the 5G core network by simulating the base station to forward the data in the downlink through the TWAN equipment.
Fig. 4 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 4: a processor (processor) 410, a communication Interface 420, a memory (memory) 430 and a communication bus 440, wherein the processor 410, the communication Interface 420 and the memory 430 are communicated with each other via the communication bus 440. Processor 410 may invoke logic instructions in memory 430 to perform a WIFI device access 5G core network method comprising: receiving an access requirement of a wireless local area network N5CW WIFI device without 5G access capability; and triggering signaling interaction and data interaction with a 5G core network based on the access requirement of the N5CW WIFI equipment, so that the N5CW WIFI equipment is accessed to the 5G core network.
In addition, the logic instructions in the memory 430 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and various media capable of storing program codes.
In another aspect, the present invention further provides a computer program product, where the computer program product includes a computer program that is storable on a non-transitory computer-readable storage medium, and when the computer program is executed by a processor, a computer is capable of executing the method for WIFI device to access a 5G core network provided by the above methods, where the method includes: receiving an access requirement of wireless local area network N5CW WIFI equipment without 5G access capability; and triggering signaling interaction and data interaction with a 5G core network based on the access requirement of the N5CW WIFI equipment, so that the N5CW WIFI equipment is accessed to the 5G core network.
In another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented by a processor to perform the method for a WIFI device to access a 5G core network provided by the foregoing methods, where the method includes: receiving an access requirement of wireless local area network N5CW WIFI equipment without 5G access capability; and triggering signaling interaction and data interaction with a 5G core network based on the access requirement of the N5CW WIFI equipment, so that the N5CW WIFI equipment is accessed to the 5G core network.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (8)

1. A method for accessing a WIFI device to a 5G core network is characterized by comprising the following steps:
receiving an access requirement of a wireless local area network N5CW WIFI device without 5G access capability;
triggering signaling interaction and data interaction with a 5G core network based on the access requirement of the N5CW WIFI device, so that the N5CW WIFI device is accessed to the 5G core network;
receiving an access requirement of a wireless local area network N5CW WIFI device without 5G access capability, which includes:
determining that the N5CW WIFI device accesses the 5G core network through a Trusted WLAN Access Network (TWAN) device;
the TWAN equipment comprises a trust domain WLAN access point TWAP, a trust domain WLAN interaction function entity control plane TWIF-CP and a trust domain WLAN interaction function entity user plane TWIF-UP.
2. The method for accessing the 5G core network by the WIFI device according to claim 1, wherein triggering signaling interaction and data interaction with the 5G core network based on the access requirement of the N5CW WIFI device to enable the N5CW WIFI device to access the 5G core network comprises:
the N5CW WIFI equipment is accessed through a hotspot provided by the TWAP, and the TWAP forwards data sent by the N5CW WIFI equipment to the TWIF-CP;
the TWIF-CP establishes connection with the 5G core network and carries out message interaction;
after the TWIF-CP is in message connection with the 5G core network, the TWIF-CP and the TWIF-UP establish data channel connection;
and the TWIF-UP receives the data forwarded by the TWAP and forwards a data message to a user plane functional entity UPF of the 5G core network through a GTP-U tunnel.
3. The method for the WIFI device to access the 5G core network according to claim 2, wherein the TWIF-CP establishing a connection with the 5G core network and performing message interaction comprises:
the TWIF-CP establishes Stream Control Transmission Protocol (SCTP) connection with an access and mobility management functional entity (AMF) of the 5G core network;
and after receiving the access message sent by the TWAP, sending an NAS message and an NGAP message to the AMF.
4. The method of claim 2, wherein the step of establishing the data path connection between the TWIF-CP and the TWIF-UP after the TWIF-CP establishes the message connection with the 5G core network comprises:
the TWIF-CP sends GPRS tunnel protocol user plane GTP-U interface information to the TWIF-UP through a user datagram protocol UDP interface;
and the TWIF-UP completes GTP-U tunnel encapsulation and decapsulation based on the GTP-U interface information.
5. The method for accessing the 5G core network by the WIFI device according to claim 1, wherein based on the access requirement of the N5CW WIFI device, signaling interaction and data interaction with the 5G core network are triggered, so that the N5CW WIFI device accesses the 5G core network, further comprising:
and after receiving the downlink data sent by the UPF, the TWIF-UP forwards a data message to the TWAP by removing the GTP-U tunnel.
6. The utility model provides a WIFI equipment access 5G core network system which characterized in that includes:
the access module is used for receiving the access requirement of the wireless local area network N5CW WIFI equipment without 5G access capability;
the interaction module is used for triggering signaling interaction and data interaction with a 5G core network based on the access requirement of the N5CW WIFI equipment, so that the N5CW WIFI equipment is accessed to the 5G core network;
the access module is further configured to:
determining that the N5CW WIFI device accesses the 5G core network through a Trusted WLAN Access Network (TWAN) device;
the TWAN equipment comprises a trust domain WLAN access point TWAP, a trust domain WLAN interaction function entity control plane TWIF-CP and a trust domain WLAN interaction function entity user plane TWIF-UP.
7. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of the method for the WIFI device to access the 5G core network as claimed in any one of claims 1 to 5.
8. A non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method for the WIFI device to access the 5G core network as recited in any one of claims 1 to 5.
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Citations (1)

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CN110999515A (en) * 2017-08-10 2020-04-10 华为技术有限公司 Interaction between broadband network service gateway and fifth generation core network

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WO2014107358A1 (en) * 2013-01-03 2014-07-10 Intel Corporation Packet data connections in a wireless communication system using a wireless local area network

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CN110999515A (en) * 2017-08-10 2020-04-10 华为技术有限公司 Interaction between broadband network service gateway and fifth generation core network

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