CN107872795B - Authentication method and system for accessing terminal to WiFi and related equipment - Google Patents

Authentication method and system for accessing terminal to WiFi and related equipment Download PDF

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Publication number
CN107872795B
CN107872795B CN201610851383.2A CN201610851383A CN107872795B CN 107872795 B CN107872795 B CN 107872795B CN 201610851383 A CN201610851383 A CN 201610851383A CN 107872795 B CN107872795 B CN 107872795B
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terminal
authentication
wifi
network
wifi network
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CN107872795A (en
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邓博存
许向东
卢洪涛
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention discloses an authentication method and system for accessing a terminal to WiFi, the terminal and a portal server, and relates to the technical field of wireless communication. The invention automatically initiates the pre-dialing command and starts the delay associated timer after the terminal monitors the WiFi network, the terminal is in the 4G network at the moment, the authentication information can be sent to the core network through a data route with the core network, the authentication information of the terminal is sent to the portal server through an interface between the core network and the portal server for subsequent authentication process, and by reasonably setting a delay correlation timer, when the time of the delay associated timer is over, the terminal initiates the connection with the WiFi network again, at the moment, the terminal is authenticated, therefore, the connection with the WiFi network can be completed without re-authentication after the association request is redirected, the non-perception smooth switching from the 4G network to the WiFi network of the terminal is realized, the user does not need to manually input authentication information each time in the subsequent connection process after the user is connected with the WiFi network, and the user experience is improved.

Description

Authentication method and system for accessing terminal to WiFi and related equipment
Technical Field
The invention relates to the technical field of wireless communication, in particular to an authentication method and system for accessing a terminal to WiFi, the terminal and a portal server.
Background
In the prior art, when the terminal simultaneously turns on the 4G (fourth Generation mobile communication technology) connection function and the WiFi connection function, a WiFi network is preferentially selected for connection, and when the 4G terminal enters the WiFi network from the 4G network, the terminal automatically connects to the previously connected WiFi network.
However, there are some WiFi networks such as public business WiFi at present, when a terminal switches from a 4G network to a WiFi network, the terminal is forced to be held to a designated PORTAL page, and a user must manually input an account password for authentication, and cannot complete automatic connection, which results in a reduction in user experience.
Disclosure of Invention
The invention aims to solve the technical problems that: how to realize automatic authentication when the terminal is switched from the 4G network to the WiFi network improves user experience.
According to one aspect of the invention, an authentication method for accessing a terminal to wireless fidelity WiFi is provided, which comprises the following steps: the terminal responds to the monitoring of the WiFi network and sends a pre-dialing command to the portal server through the core network, and the pre-dialing command carries authentication information of the terminal corresponding to the WiFi network so that the portal server can send the authentication information to the authentication server for authentication; the terminal starts a delay associated timer for timing while sending a pre-dialing command; and the terminal responds to the ending of the timing of the delay associated timer to connect with the WiFi network.
According to a second aspect of the present invention, there is provided an authentication method for accessing a terminal to WiFi, including: the portal server receives a pre-dialing command initiated by a WiFi network responded by a terminal forwarded by a core network, wherein the pre-dialing command carries authentication information of the terminal corresponding to the WiFi network; the portal server sends the authentication information to the authentication server for authentication so that the authentication server can return an authentication result; the portal server receives an authentication result of the terminal; the portal server receives an association request initiated by a terminal redirected by a WiFi network; the portal server inquires an authentication result of the terminal in the pre-dialing process according to the association request; and under the condition that the terminal passes the authentication, the portal server sends the authentication passing result to the terminal so that the terminal completes the connection establishment with the WiFi network.
According to a third aspect of the present invention, there is provided a terminal comprising: the pre-dialing unit is used for responding to the monitoring of the wireless fidelity WiFi network and sending a pre-dialing command to the portal server through the core network, and the pre-dialing command carries authentication information of the terminal corresponding to the WiFi network so that the portal server can send the authentication information to the authentication server for authentication; the timing unit is used for starting a delay correlation timer to time while sending a pre-dialing command; and the WiFi connecting unit is used for responding to the ending of the timing of the delay associated timer and connecting with the WiFi network.
According to a fourth aspect of the present invention, there is provided a portal server comprising: the pre-dialing receiving unit is used for receiving a pre-dialing command initiated by a terminal responding to a wireless fidelity WiFi network forwarded by a core network, wherein the pre-dialing command carries authentication information of the terminal corresponding to the WiFi network; the authentication information forwarding unit is used for sending the authentication information to the authentication server for authentication so that the authentication server can return an authentication result; an authentication result receiving unit for receiving an authentication result of the terminal; a redirection request receiving unit, configured to receive an association request initiated by a terminal redirected by a WiFi network; the authentication result query unit is used for querying the authentication result of the terminal in the pre-dialing process according to the association request; and the authentication result pushing unit is used for sending the authentication passing result to the terminal under the condition that the terminal passes the authentication, so that the terminal completes the connection establishment with the WiFi network.
According to a fifth aspect of the present invention, there is provided an authentication system for accessing WiFi by a terminal, comprising: the terminal in any of the foregoing embodiments, the portal server in any of the foregoing embodiments, further includes a core network and an authentication server; the core network is used for forwarding the pre-dialing command sent by the terminal to the portal server; and the authentication server is used for receiving authentication information, corresponding to the WiFi network, of the terminal sent by the portal server and authenticating the terminal.
The invention automatically initiates the pre-dialing command and starts the delay associated timer after the terminal monitors the WiFi network, since the terminal is in the 4G network at this time, the authentication information of the terminal can be transmitted to the core network through the data route with the core network, and sends the authentication information of the terminal to the portal server through the interface between the core network and the portal server for the subsequent authentication process, and through reasonably setting the delay correlation timer, when the time of the delay associated timer is over, the terminal initiates the connection with the WiFi network again, at the moment, the terminal is authenticated, therefore, the connection with the WiFi network can be completed without re-authentication after the association request is redirected, the non-perception smooth switching from the 4G network to the WiFi network of the terminal is realized, the user does not need to manually input authentication information each time in the subsequent connection process after the user is connected with the WiFi network, and the user experience is improved.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating an authentication method for a terminal to access WiFi according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating an authentication method for a terminal to access WiFi according to another embodiment of the present invention.
Fig. 3 shows a schematic structural diagram of a terminal according to an embodiment of the present invention.
FIG. 4 shows a schematic structural diagram of a portal server according to an embodiment of the invention.
Fig. 5 is a schematic structural diagram illustrating an authentication system for a terminal to access WiFi according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.
The scheme is provided for solving the problems that in some WiFi networks in the prior art, when a terminal is switched into the WiFi network from a 4G network, the terminal can be forcibly clamped to a specified PORTAL page, a user must manually input an account number and a password for authentication, automatic connection cannot be completed, and service experience of the user is reduced.
The authentication method for the terminal to access WiFi of the present invention is described below with reference to fig. 1 and 2.
Fig. 1 is a flowchart of an authentication method for accessing WiFi by a terminal according to an embodiment of the present invention. As shown in fig. 1, the method of this embodiment includes:
and step S102, the terminal responds to the WiFi network, sends a pre-dialing command to the portal server through the core network, and starts a delay associated timer for timing while sending the pre-dialing command.
The pre-dialing command uses a PORTAL protocol, the pre-dialing command carries authentication information of the terminal corresponding to the WiFi network, and the authentication information specifically includes, for example: a Media Access Control (MAC) address of the terminal, a PORTAL account number, and a password. And the authentication information is automatically stored in the terminal after the terminal accesses the WiFi network for the first time. The automatic pre-dialing of the terminal can be realized by inserting a terminal control, specifically, the terminal control can be embedded into a mobile phone application program in an SDK (Software Development Kit) form, and the terminal control runs in a background and is used for monitoring an available WiFi network and automatically initiating a pre-dialing command.
The Core Network is an EPC (Evolved Packet Core) in the 4G Network, and specifically, the terminal may send the pre-dialing command to a PORTAL server through an IP Radio Access Network (IP ran) element in the Core Network. The core network and the PORTAL server are provided with interfaces. It should be noted that the scheme of the present invention is also applicable to the case where the terminal is switched from the mobile cellular network of other systems to the WiFi network, and in addition, the 4G network in the present invention includes an LTE (Long Term Evolution) network.
The timing duration of the delay correlation timer can be set according to the actual transmission of the pre-dialing command and the time delay for authentication, and the reasonable setting of the delay correlation timer can enable the terminal to finish the authentication process and send the authentication process to the portal server when the timing of the delay correlation timer is finished.
Step S104, the portal server sends the authentication information in the pre-dialing command to the authentication server for authentication.
The authentication server side stores the MAC address, PORTAL account and password of the terminal, compares the MAC address, PORTAL account and password with authentication information sent by the PORTAL server, and if the MAC address, PORTAL account and password are consistent, the authentication is passed. And the authentication server side is provided with an authentication aging timer, the authentication aging timer restarts timing after the current authentication is passed, and when the timing of the authentication aging timer is finished, the period indicating that the terminal is legally existed in the system is finished, and the authentication needs to be carried out again. The terminal does not need to be authenticated again for a long time after one authentication by prolonging the timing time of the authentication aging timer (for example, one year or more), but this method has a security risk.
Further, the authentication Server sends the authentication result to a BRAS (Broadband Access Server), determines the processes of terminal address allocation or charging and the like, completes the authentication process, and the Broadband Access Server sends the authentication result to the portal Server for storage, so as to be used for the subsequent association process of the terminal and the WiFi network.
And step S106, the terminal responds to the end of the timing of the delay associated timer and connects with the WiFi network.
The process of establishing connection between the terminal and the WiFi network is as follows: the terminal initiates an association request to the WiFi network, the WiFi network redirects the association request to the portal server, the portal server receives the redirected association request, inquires an authentication result of the terminal in a pre-dialing process according to the association request, and sends the authentication result to the terminal, and under the condition that the terminal passes the authentication, the terminal receives the authentication passing result sent by the portal server, completes the connection with the WiFi network, and then can use the WiFi network to surf the internet. The correlation request carries the MAC address of the terminal, the portal server stores an authentication result corresponding to the MAC address of the terminal, and whether the terminal passes the authentication in the pre-dialing process can be inquired through the MAC.
If the terminal receives the result that the authentication pushed by the portal server fails, the terminal can initiate the pre-dialing command again, and repeatedly execute the processes from the step S102 to the step S106 to perform authentication and WiFi network connection, and can preset the number of valid authentication times.
The method of the embodiment automatically initiates the pre-dialing command and starts the delay associated timer after the terminal monitors the WiFi network, because the terminal is in the 4G network at the moment, the authentication information of the terminal can be sent to the core network through the data routing with the core network, the authentication information of the terminal is sent to the portal server through the interface between the core network and the portal server for subsequent authentication process, the terminal initiates the connection with the WiFi network again when the timing of the delay associated timer is finished through reasonably setting the delay associated timer, the terminal is authenticated at the moment, the connection with the WiFi network can be completed without re-authentication after the association request is redirected, the non-sensing smooth switching from the 4G network to the WiFi network of the terminal is realized, and the user does not need to manually input the authentication information each time in the subsequent connection process after the user is connected with the WiFi network, the user experience is improved. And further facilitates the deployment of such WiFi networks.
In addition, because the authentication information of the existing 4G network and the WiFi network is not intercommunicated, if the authentication information is communicated by adopting a method for switching the terminal from the 4G network to the WiFi network, the difficulty in network reconstruction is high, and the scheme of the invention has small changes to the network and the network elements and is simple to realize. In addition, compared with the scheme of prolonging the authentication aging timer, the authentication information of the terminal is forwarded through the data route of the core network, so that the method is safer.
A specific embodiment of the authentication method for accessing WiFi by a terminal according to the present invention is described below with reference to fig. 2.
Fig. 2 is a flowchart of an authentication method for accessing WiFi by a terminal according to another embodiment of the present invention. As shown in fig. 2, the method of this embodiment includes:
step S202, the terminal responds to the fact that the WiFi network is monitored to send a pre-dialing command to the core network, meanwhile, a delay associated timer is started to conduct timing, and the pre-dialing command carries authentication information of the terminal corresponding to the WiFi network.
The authentication information of the terminal includes, for example, a MAC address, a PORTAL account, and a password.
Step S204, the core network forwards the pre-dialing command to the portal server.
In step S206, the portal server transmits the authentication information to the authentication server.
And step S208, the authentication server authenticates the terminal according to the authentication information and updates the authentication aging timer.
Wherein the authentication server restarts the authentication aging timer.
Step S210, the authentication server sends the authentication result to the broadband access server.
Step S212, the broadband access server sends the authentication result to the portal server.
Step S214, the time of the delay association timer is over, and the terminal initiates an association request to the WiFi network.
Wherein, the association request carries the MAC address of the terminal.
Step S216, the WiFi network intercepts the association request of the terminal and redirects the association request to the portal server.
Step S218, the portal server inquires the authentication result of the terminal in the pre-dialing process according to the association request.
Step S220, the portal server pushes the authentication result to the terminal.
In step S222, the terminal completes the establishment of the connection with the WiFi network when receiving the result that the authentication pushed by the portal server passes.
If the terminal receives the result that the authentication pushed by the portal server fails, the terminal can initiate the pre-dialing command again to repeat the processes of the steps S202 to S220 for authentication and WiFi network connection, and the number of valid authentication times can be preset.
The present invention also provides a terminal, which is described below with reference to fig. 3.
Fig. 3 is a block diagram of one embodiment of a terminal of the present invention. As shown in fig. 3, the terminal 30 includes:
and the pre-dialing unit 302 is configured to send a pre-dialing command to the portal server through the core network in response to the wireless fidelity WiFi network being monitored, where the pre-dialing command carries authentication information of the terminal corresponding to the WiFi network, so that the portal server sends the authentication information to the authentication server for authentication.
Specifically, the pre-dialing unit 302 is configured to, in response to the WiFi network being sensed, automatically send a pre-dialing command to an interconnection protocol wireless access network element of the core network, so that the interconnection protocol wireless access network element forwards the pre-dialing command to the portal server.
The authentication information comprises a media access control address, a portal account and a password of the terminal.
And the timing unit 304 is configured to start a delay associated timer for timing while sending the pre-dialing command.
And the WiFi connecting unit 306 is configured to connect to the WiFi network in response to the end of the timing of the delay associated timer.
Specifically, the WiFi connecting unit 306 is configured to initiate an association request to the WiFi network, so that the portal server receives the association request redirected by the WiFi network, query an authentication result of the terminal in a pre-dialing process according to the association request, and receive an authentication passing result sent by the portal server when the terminal is authenticated, so as to complete establishing connection with the WiFi network.
The present invention also provides a portal server, which is described below with reference to fig. 4.
FIG. 4 is a block diagram of one embodiment of a portal server of the present invention. As shown in fig. 4, the portal server 40 includes:
a pre-dialing receiving unit 402, configured to receive a pre-dialing command initiated by the core network in response to the monitored WiFi network, where the pre-dialing command carries authentication information of the terminal corresponding to the WiFi network.
And an authentication information forwarding unit 404, configured to send the authentication information to the authentication server for authentication, so that the authentication server returns an authentication result.
An authentication result receiving unit 406, configured to receive an authentication result of the terminal.
A redirection request receiving unit 408, configured to receive an association request initiated by a terminal redirected by the WiFi network.
And an authentication result query unit 410, configured to query an authentication result of the terminal in the pre-dialing process according to the association request.
And an authentication result pushing unit 412, configured to send the authentication pass result to the terminal when the terminal has passed the authentication, so that the terminal completes establishing a connection with the WiFi network.
The invention also provides an authentication system for accessing the terminal to the WiFi, which is described in the following with reference to FIG. 5.
Fig. 5 is a block diagram of an embodiment of an authentication system for accessing WiFi by a terminal according to the present invention. As shown in fig. 5, the system 50 includes: the terminal 30 and the portal server 40 in any of the foregoing embodiments further include: a core network 502 and an authentication server 504, and further, a broadband access server 506.
The core network 502 is configured to forward the pre-dialing command sent by the terminal 30 to the portal server 40.
The specific forwarding network element of the pre-dialing command is, for example, an IPRAN network element in a core network.
And the authentication server 504 is configured to receive the authentication information, corresponding to the WiFi network, of the terminal 30 sent by the portal server 40, authenticate the terminal 30, and send an authentication result to the broadband access server 506.
And the broadband access server 506 is configured to receive the authentication result sent by the authentication server 504, and send the authentication result of the terminal 30 to the portal server 40.
Further, the system 50 may further include: and the WiFi access system 508 is configured to receive the association request sent by the terminal 30, and redirect the association request to the portal server 40.
The WiFi network in the present invention is a network including an AP (Access Point) or an AC (Access Controller).
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. An authentication method for accessing a terminal to wireless fidelity WiFi (wireless fidelity WiFi), which is characterized by comprising the following steps:
the method comprises the steps that a terminal responds to a monitored WiFi network and sends a pre-dialing command to a portal server through a core network, the pre-dialing command carries authentication information of the terminal corresponding to the WiFi network, so that the portal server sends the authentication information to an authentication server for authentication, wherein the timing duration of a delay associated timer is set according to the actual transmission of the pre-dialing command and the time delay for authentication;
the terminal starts a delay association timer for timing while sending a pre-dialing command;
the terminal responds to the end of the timing of the delay associated timer and is connected with the WiFi network;
wherein the terminal responding to the ending of the timing of the delay correlation timer and connecting with the WiFi network comprises the following steps:
the terminal initiates an association request to the WiFi network so that the portal server receives the association request redirected by the WiFi network and queries an authentication result of the terminal in a pre-dialing process according to the association request;
and under the condition that the terminal is authenticated, the terminal receives an authentication passing result sent by the portal server to complete the connection establishment with the WiFi network.
2. The method of claim 1,
the terminal responds to the WiFi network, and sends a pre-dialing command to the portal server through the core network comprises the following steps:
and the terminal responds to the monitoring of the WiFi network and automatically sends a pre-dialing command to an interconnection protocol wireless access network element of the core network, so that the interconnection protocol wireless access network element forwards the pre-dialing command to the portal server.
3. The method according to any one of claims 1 to 2,
the authentication information comprises a media access control address, a portal account and a password of the terminal.
4. An authentication method for accessing a terminal to wireless fidelity WiFi (wireless fidelity WiFi), which is characterized by comprising the following steps:
the method comprises the steps that a portal server receives a pre-dialing command initiated by a WiFi network responded by a terminal forwarded by a core network, wherein the pre-dialing command carries authentication information of the terminal corresponding to the WiFi network;
the portal server sends the authentication information to an authentication server for authentication so that the authentication server can return an authentication result;
the portal server receives an authentication result of the terminal;
the portal server receives the association request initiated by the terminal redirected by the WiFi network;
the portal server inquires an authentication result of the terminal in a pre-dialing process according to the association request;
and under the condition that the terminal passes the authentication, the portal server sends an authentication passing result to the terminal so that the terminal completes the establishment of the connection with the WiFi network.
5. A terminal, comprising:
the pre-dialing unit is used for responding to the monitoring of the wireless fidelity WiFi network and sending a pre-dialing command to a portal server through a core network, wherein the pre-dialing command carries authentication information of the terminal corresponding to the WiFi network, so that the portal server sends the authentication information to an authentication server for authentication;
the timing unit is used for starting a delay associated timer for timing while sending the pre-dialing command, wherein the timing duration of the delay associated timer is set according to the actual transmission of the pre-dialing command and the time delay for authentication;
the WiFi connecting unit is used for responding to the ending of the timing of the delay correlation timer and connecting with the WiFi network;
the WiFi connection unit is used for initiating a correlation request to the WiFi network so that the portal server receives the correlation request redirected by the WiFi network, inquiring an authentication result of the terminal in a pre-dialing process according to the correlation request, and receiving the authentication passing result sent by the portal server under the condition that the terminal passes the authentication so as to complete the establishment of connection with the WiFi network.
6. The terminal of claim 5,
the pre-dialing unit is configured to, in response to the WiFi network being monitored, automatically send a pre-dialing command to an interconnection protocol wireless access network element of the core network, so that the interconnection protocol wireless access network element forwards the pre-dialing command to the portal server.
7. A terminal according to any of claims 5-6,
the authentication information comprises a media access control address, a portal account and a password of the terminal.
8. A portal server, comprising:
the device comprises a pre-dialing receiving unit, a pre-dialing receiving unit and a pre-dialing receiving unit, wherein the pre-dialing receiving unit is used for receiving a pre-dialing command initiated by a core network in response to a wireless fidelity (WiFi) network, and the pre-dialing command carries authentication information of the terminal corresponding to the WiFi network;
the authentication information forwarding unit is used for sending the authentication information to an authentication server for authentication so that the authentication server can return an authentication result;
an authentication result receiving unit for receiving an authentication result of the terminal;
a redirection request receiving unit, configured to receive an association request initiated by the terminal and redirected by the WiFi network;
the authentication result query unit is used for querying the authentication result of the terminal in the pre-dialing process according to the association request;
and the authentication result pushing unit is used for sending an authentication passing result to the terminal under the condition that the terminal passes the authentication so that the terminal completes the connection establishment with the WiFi network.
9. An authentication system for accessing a terminal to wireless fidelity (WiFi), comprising: the terminal of any of claims 5-7 and the portal server of claim 8, further comprising a core network and an authentication server;
the core network is used for forwarding the pre-dialing command sent by the terminal to the portal server;
and the authentication server is used for receiving the authentication information, corresponding to the WiFi network, of the terminal sent by the portal server and authenticating the terminal.
10. The system of claim 9, further comprising: a broadband access server;
and the broadband access server is used for receiving the authentication result sent by the authentication server and sending the authentication result of the terminal to the portal server.
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