CN103517341B - Split the method, system and device of flow in a kind of WLAN - Google Patents
Split the method, system and device of flow in a kind of WLAN Download PDFInfo
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Abstract
The method that the present invention discloses segmentation flow in a kind of WLAN, including：AP receives the network name that WLAN user terminal is selected according to data service, and the mapping relations of network name and AC addresses are created according to the network name selected；After WLAN user terminal is linked into access network, the AP is sent to the corresponding AC of network name of the access network according to network name and the mapping relations of AC addresses, the user data that WLAN user terminal is sent；The system that the present invention also provides segmentation flow in a kind of WLAN.Technology according to the present invention scheme, solves the problems, such as that the excessive and data traffic of data traffic burden is roundabout on AC in the prior art.
Description
Technical Field
The present invention relates to traffic segmentation in wireless communications, and in particular, to a method, system, and apparatus for segmenting traffic in a wireless local area network.
Background
A Wireless Local Area Network (WLAN) is a Wireless broadband access means capable of supporting mobile characteristics in a certain Area, and provides a broadband access mode for WLAN user terminals to access the Internet. Through the WLAN access system, the WLAN user terminal can use various Internet services such as WWW, FTP, E-mail and the like at high speed.
The WLAN Access system is mainly composed of an Access Point (AP) and an Access Controller (AC), and is used to complete Access, Access control, charging information acquisition, service management and control, and the like of a WLAN user terminal. The access point is a small wireless base station device in the WLAN access system and is used for completing wireless access related to 802.11 series standards, the access point is also a network bridge which is used as a bridge for connecting a wired network and a wireless network, and any WLAN user terminal can access wired network resources through the corresponding access point.
In terms of security control, an access point may control access of a WLAN user terminal through a network identifier and a Media Access Control (MAC) address; meanwhile, the access point supports the air encryption function of the (WEP) technology, and the information security of the WLAN user terminal is protected. In the aspect of data communication, the access point is responsible for completing encryption and decryption processing of data packets interacted between the access point and the WLAN user terminal.
Currently, a WLAN access system deployed by an operator generally includes two main devices, an AP and an AC, where the AP is responsible for providing wireless signals, and the AC is responsible for management and configuration of multiple subordinate APs and access authentication management of a user, and is also an aggregator of multiple data flows passing through the AP. In general, data traffic of a user corresponding to an AP is uniformly sent to an AC corresponding to the AP without distinction, and the AC is usually deployed in a machine room of a convergence point, because the AC is an important control point and a traffic convergence point of a WLAN, and the data traffic of the user sent by the WLAN is large, the data traffic of the AC is large, and after a network is developed in a large scale, the AC is difficult to control.
Fig. 1 is a schematic view of a topological relationship between an AP and an AC in an access system in the prior art, and as shown in fig. 1, data traffic passing through different APs in a network in the same region is converged to an AC in a centralized computer room, and then a WLAN user terminal is accessed to a service network through a data network of the AC. The problems that this method can cause are mainly two-fold:
1) aggregation of data traffic to the same AC may bring a large processing load to the AC, so that the processing capability of the AC is reduced, thereby forming a bottleneck of processing speed;
2) if the data service accessed by the WLAN user terminal is in the service network 2 corresponding to the AC2, the data traffic sent to the AC1 through the AP needs to bypass from the service network 1 to the service network 2, which may cause a large network delay and affect the service experience of the user.
At present, some solutions for solving the data traffic offload problem exist, for example, the invention patent with application number 200910091448.8 discloses a wireless network deployment method and a wireless access point, and specifically discloses the following technical solutions: the method comprises the steps that tunnel connection is respectively established between one AP and more than one AC, the AP independently downloads and maintains a set of AP configuration for each tunnel, a corresponding BSS is established for each tunnel, and wireless network service is provided through the BSS; and when the AP receives the uplink data of the wireless terminal, determining a forwarding tunnel according to the BSS ID of the wireless terminal, and sending the uplink data to the corresponding AC through the determined forwarding tunnel. The scheme can enable one AP to be connected with a plurality of ACs, and avoids network performance reduction caused by repeated AP deployment of a plurality of operators in the same area; however, this solution enables one AP to establish connections with multiple ACs, but does not address the issue of traffic aggregation on the ACs. In addition, if a load balancing method is adopted to reduce the load of the network intermediate device AC, the method is only applicable to a local area network, and lacks global deployment and configuration capabilities.
Disclosure of Invention
In view of the above, the present invention provides a method, a system and a device for splitting traffic in a wireless local area network, which solve the problems of excessive data traffic load on an AC and data traffic detour in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a method for dividing flow in a wireless local area network.A Wireless Local Area Network (WLAN) Access Point (AP) receives a network name selected by a WLAN user terminal according to data service, and creates a mapping relation between the network name and an Access Controller (AC) address according to the selected network name; the method further comprises the following steps:
and after the WLAN user terminal is accessed to the access network, the AP sends the user data sent by the WLAN user terminal to the AC corresponding to the network name of the access network according to the mapping relation between the network name and the AC address.
In the method, the AP receives a network name selected by the WLAN user terminal according to the data service, and creates a mapping relationship between the network name and the AC address according to the selected network name as follows:
AP broadcasts the network name;
the AP receives a network name selected by the WLAN user terminal according to the data service, and sends an inquiry request message to the name server according to the network name selected by the WLAN user terminal; the name server locally inquires a corresponding AC address according to the network name in the inquiry request message and returns the AC address to the AP;
and the AP establishes a mapping relation between the network name and the AC address according to the selected network name and the inquired AC address, and establishes a data tunnel between the AP and the AC address.
In the above method, the AP broadcasts the network name as:
each AP in the access system sends out broadcast messages regularly according to a preset broadcast period; the broadcast message carries an indication frame, and a network name is added to an SSID field of the indication frame.
In the above method, the name server locally queries the corresponding AC address according to the network name in the query request message and returns the AC address to the AP:
the method comprises the steps that the corresponding relation between a network name and an AC address is pre-configured in a name server;
after receiving an inquiry request message sent by an AP, a name server verifies the IP address of the AP according to a local pre-configured IP address library of a trusted AP;
and when the IP address of the AP exists in the IP address library of the credible AP, the name server searches the AC address corresponding to the network name according to the network name in the query request message and the corresponding relation between the locally stored network name and the AC address, and sends the found AC address to the AP through a query response message.
In the above method, the method further comprises:
and when the IP address of the AP does not exist in the IP address library of the credible AP, the name server refuses to inquire the AC address for the AP and sends an inquiry failure message to the AP.
In the above-mentioned method, the first step of the method,
the name server is integrated in a Domain Name System (DNS);
the integration mode is to add a corresponding relation table in the DNS server, and the table entry in the corresponding relation table is the corresponding relation between the network name and the AC address.
In the above method, the AP sends the user data sent by the WLAN user terminal to the AC corresponding to the network name of the access network according to the mapping relationship between the network name and the AC address:
the AP searches an AC address corresponding to the network name of the access network in the stored mapping relation between the AC address and the network name according to the access network accessed by the WLAN user terminal;
and the AP sends the user data sent by the WLAN user terminal to the AC address through the established data tunnel between the AP and the AC according to the found AC address.
The invention also provides a method for dividing the flow in the wireless local area network, which comprises the following steps:
and the WLAN user terminal selects a network name from the network names broadcasted by the AP according to the data service of the WLAN user terminal.
In the above method, the WLAN user terminal selects a network name from the network names broadcast by the AP according to its own data service:
when a WLAN user terminal searches a network, the WLAN user terminal receives broadcast messages sent by all APs and acquires at least two network names from the broadcast messages;
the WLAN user terminal autonomously selects a network name from the network names broadcasted by the AP according to the data service of the WLAN user terminal;
and after the network name is selected, establishing connection between the access networks corresponding to the network name.
The invention also provides a system for dividing the flow in the wireless local area network, which comprises: WLAN user terminal, AP, AC; wherein,
the AP is used for receiving the network name selected by the WLAN user terminal according to the data service and creating a mapping relation between the network name and the AC address according to the selected network name; the access network is also used for sending the user data sent by the WLAN user terminal to the AC corresponding to the network name of the access network according to the mapping relation between the network name and the AC address;
and the WLAN user terminal is used for selecting a network name from the network names broadcasted by the AP according to the data service of the WLAN user terminal.
In the above system, the system further includes:
the name server is used for storing the corresponding relation between the network name and the AC address;
and the name server is also used for locally inquiring the corresponding AC address according to the network name in the inquiry request message and returning the AC address to the AP when receiving the inquiry request message sent by the AP.
The present invention also provides an AP, including: a mapping creation unit and a data forwarding unit; wherein,
the mapping creation unit is used for receiving the network name selected by the WLAN user terminal according to the data service and creating the mapping relation between the network name and the AC address of the access controller according to the selected network name;
and the data forwarding unit is used for sending the user data sent by the WLAN user terminal to the AC corresponding to the network name of the access network according to the mapping relation between the network name and the AC address created by the mapping creation unit after the WLAN user terminal accesses the access network.
The present invention also provides a WLAN user terminal, which is characterized in that the WLAN user terminal is configured to select a network name from the network names broadcast by the AP according to its own data service.
The invention provides a method, a system and a device for dividing flow in a wireless local area network.A Wireless Local Area Network (WLAN) user terminal receives a network name selected by the WLAN user terminal according to data service, and creates a mapping relation between the network name and an Access Controller (AC) address according to the selected network name; after the WLAN user terminal accesses the access network, the AP sends user data sent by the WLAN user terminal to the AC corresponding to the network name of the access network according to the mapping relation between the network name and the AC address; therefore, the WLAN user terminal selects different network names for different data services of the WLAN user terminal, and the AP establishes connection with the ACs according to the selected network names, so that one AP can establish connection with a plurality of ACs; when data service needs to be sent, the AP sends user data to different ACs according to different network names, and unloads and divides data traffic on the ACs, so that the problem of overlarge data traffic burden on the ACs in the prior art is solved; meanwhile, the problem of data traffic roundabout is solved, and the access efficiency of the user is improved.
Drawings
Fig. 1 is a schematic diagram of a topological relationship between an AP and an AC in an access system in the prior art;
fig. 2 is a flow chart illustrating a method for implementing traffic splitting in a wireless lan according to the present invention;
FIG. 3 is a flowchart illustrating a method for implementing step 201 in the present invention;
FIG. 4 is a schematic diagram of a topological relationship between an AP and an AC in the access system of the present invention;
fig. 5 is a schematic structural diagram of a system for splitting traffic in a wireless local area network according to the present invention.
Detailed Description
The basic idea of the invention is: the AP receives a network name selected by the WLAN user terminal according to the data service, and creates a mapping relation between the network name and the AC address according to the selected network name; and after the WLAN user terminal is accessed to the access network, the AP sends the user data sent by the WLAN user terminal to the AC corresponding to the network name of the access network according to the mapping relation between the network name and the AC address.
The invention is further described in detail below with reference to the drawings and the specific embodiments.
The present invention provides a method for splitting traffic in a wireless local area network, fig. 2 is a schematic flow chart of the method for splitting traffic in a wireless local area network according to the present invention, as shown in fig. 2, the method includes the following steps:
step 201, the AP receives a network name selected by the WLAN user terminal according to the data service, and creates a mapping relationship between the network name and the AC address according to the selected network name.
Step 202, after the WLAN user terminal accesses the access network, the AP sends the user data sent by the WLAN user terminal to the AC corresponding to the network name of the access network according to the mapping relationship between the network name and the AC address;
specifically, since the AP stores the correspondence between the AC address and the network name, when the WLAN user terminal accesses the access network and transmits user data to the AP, the AP searches for the AC address corresponding to the network name of the access network in the stored mapping relationship between the AC address and the network name according to the access network to which the WLAN user terminal accesses, and transmits the user data transmitted by the WLAN user terminal to the AC address through the established data tunnel between itself and the AC according to the found AC address; therefore, the user data on one AP can correspond to different network names according to different data networks, and then the user data can be sent to different ACs according to different network names, so that the problem of overlarge burden caused by the fact that the same AC receives the user data sent by a plurality of APs is solved.
Fig. 3 is a flowchart of a specific implementation method of step 201 in the present invention, which is a specific implementation process of an AP receiving a network name selected by a WLAN user terminal according to a data service and creating a mapping relationship between the network name and an AC address according to the selected network name, as shown in fig. 3, the method includes the following steps:
step 301, the AP broadcasts a network name;
specifically, in the WLAN access system, each AP periodically sends out a broadcast message according to a preconfigured broadcast period, where the broadcast message carries a basic data frame defined in the 802.11 standard, and the AP adds at least two network names to the basic data frame, for example, the basic data frame may be an indication frame (BeaconFrame) defined in the IEEE802.11-2007 standard, and adds a network name (WNAME) to an SSID field of the indication frame; here, the network name carried by the AP through the broadcast message is pre-configured in the AP by the operator of the WLAN, and the operator of the WLAN configures different network names according to different data services, for example, the network name of the INTERNET is WNAME _ INTERNET, the network name of the education network is WNAME _ EDU, and the network name of the GAME network is WNAME _ GAME.
Step 302, the WLAN user terminal selects a network name from the network names broadcasted by the AP according to the data service of the WLAN user terminal;
specifically, when the WLAN user terminal searches for a network, the WLAN user terminal may receive a broadcast message sent by each AP, and obtain at least two network names from a basic data frame carried by the broadcast message; the WLAN user terminal autonomously selects a network name from the network names broadcasted by the AP according to the data service of the WLAN user terminal, and after the network name is selected, the WLAN user terminal establishes connection between access networks corresponding to the network name, so that the AP in an access system can know the network name selected by the WLAN user terminal;
for example, if the data service of the WLAN user terminal relates to an educational network, the network name selected by the WLAN user terminal is WNAME _ EDU; the data traffic of the WLAN user terminal relates to a network GAME, and the network name of the WLAN user terminal is WNAME _ GAME.
Step 303, the AP receives the network name selected by the WLAN user terminal according to the data service, and sends an inquiry request message to the name server according to the network name selected by the WLAN user terminal;
specifically, after obtaining the network name selected by the WLAN user terminal, the AP needs to query the corresponding AC address from the name server according to the network name, and therefore, the AP sends a query request message to the name server, where the query request message carries the network name selected by the WLAN user terminal.
Step 304, the name server locally queries the corresponding AC address according to the network name in the query request message and returns the AC address to the AP;
specifically, fig. 4 is a schematic diagram of a topological relationship between an AP and an AC in the WLAN access system of the present invention, as shown in fig. 4, an operator of the WLAN pre-configures a correspondence between a network name (WNAME) and an AC address (WNAME _ AC _ IP) in a name server, and the name server stores the correspondence between the network name and the AC address, so that it can be ensured that after a WLAN user terminal accesses an access network, the most appropriate AC is found and accessed according to the network name of the access network. For example, for the network name WNAME _ EDU, the AC configured by the operator for the network name is the AC with the most abundant bandwidth of the interface of the education network, so that the WLAN user terminal will access to the AC with the most abundant bandwidth of the interface of the education network; for the network name WNAME _ GAME, the AC configured by the operator for the network name is the AC of the region where the GAME base is located or the AC of the adjacent GAME base, so that the WLAN user terminal can access the AC of the region where the GAME base is located or the AC of the adjacent GAME base;
the Name server can be integrated in a Domain Name System (DNS), the integration is that a correspondence table is added in the DNS server, and an entry in the correspondence table is a correspondence between a network Name and an AC address; in addition, the name server is only opened to the trusted AP for the trusted AP to query the AC address, and the untrusted AP is rejected from querying the AC address, so that the name server needs to verify the IP address of the AP when the AP queries the AC address;
after receiving an inquiry request message sent by an AP, a name server firstly verifies the IP address of the AP according to a local pre-configured IP address library of a trusted AP, judges whether the IP address of the AP exists in the IP address library of the trusted AP or not, if the IP address of the AP exists, the verification is passed, the name server searches an AC address corresponding to the network name according to the network name in the inquiry request message and the corresponding relation between the locally stored network name and the AC address, and sends the found AC address to the AP through an inquiry response message; if the IP address of the AP does not exist, the verification fails, the name server refuses to inquire the AC address for the AP, and an inquiry failure message is sent to the AP.
305, the AP establishes a mapping relation between the network name and the AC address according to the selected network name and the inquired AC address, and establishes a data tunnel between the AP and the AC address;
specifically, after receiving an AC address returned by the name server through the query response message, the AP establishes a data TUNNEL WNAME _ TUNNEL between itself and the AC address according to the AC address, as shown in fig. 4, as long as the AP receives an AC address from the name server, the AP can establish a data TUNNEL with the AC address, after receiving a plurality of AC addresses, one AP can establish a data TUNNEL with a plurality of different ACs, and it is convenient for the AP to send user data to different ACs later; after the data tunnel is established, the AP also needs to create a mapping relationship between the received AC address and the network name locally, so that after the WLAN user terminal accesses a certain access network, the user data sent by the WLAN user terminal will be sent to the AC address corresponding to the network name of the access network by the AP, and the corresponding AC processes the user data.
The invention also provides a method for dividing the flow in the wireless local area network, which comprises the following steps: and the WLAN user terminal selects a network name from the network names broadcasted by the AP according to the data service of the WLAN user terminal.
Specifically, when the WLAN user terminal searches for a network, the WLAN user terminal may receive a broadcast message sent by each AP, and obtain at least two network names from a basic data frame carried by the broadcast message; the WLAN user terminal autonomously selects a network name from the network names broadcasted by the AP according to the data service of the WLAN user terminal, and after the network name is selected, the WLAN user terminal establishes connection between access networks corresponding to the network name, so that the AP in an access system can know the network name selected by the WLAN user terminal;
for example, if the data service of the WLAN user terminal relates to an educational network, the network name selected by the WLAN user terminal is WNAME _ EDU; the data traffic of the WLAN user terminal relates to a network GAME, and the network name of the WLAN user terminal is WNAME _ GAME.
In order to implement the foregoing method, the present invention further provides a system for splitting traffic in a wireless local area network, fig. 5 is a schematic structural diagram of the system for splitting traffic in a wireless local area network according to the present invention, and as shown in fig. 5, the system includes: AP 10, WLAN user terminal 20, AC 30; wherein,
the AP 10 is used for receiving the network name selected by the WLAN user terminal according to the data service and creating a mapping relation between the network name and the AC address according to the selected network name; the network access control device is further configured to send the user data sent by the WLAN user terminal 20 to the AC30 corresponding to the network name of the access network according to the mapping relationship between the network name and the AC address;
and the WLAN user terminal 20 is configured to select a network name from the network names broadcast by the AP 10 according to its own data service.
The system further comprises:
a name server 40 for storing the correspondence between the network name and the AC address;
the name server 40 is further configured to, when receiving the query request message sent by the AP 10, locally query the corresponding AC address according to the network name in the query request message, and return the AC address to the AP 10.
Wherein, the AP 10 receives the network name selected by the WLAN user terminal 20 according to the data service, and creates a mapping relationship between the network name and the AC address according to the selected network name, where the mapping relationship is: the AP 10 broadcasts the network name; the AP 10 receives the network name selected by the WLAN user terminal 20 according to the data service, and sends an inquiry request message to the name server 40 according to the network name selected by the WLAN user terminal 20; the name server 40 locally queries the corresponding AC address according to the network name in the query request message and returns the AC address to the AP 10; the AP 10 creates a mapping relationship between the network name and the AC address according to the selected network name and the queried AC address, and establishes a data tunnel between itself and the AC address.
The AP 10 sends the user data sent by the WLAN user terminal 20 to the AC30 corresponding to the network name of the access network according to the mapping relationship between the network name and the AC address: the AP 10 searches for an AC address corresponding to the network name of the access network in the stored mapping relation between the AC address and the network name according to the access network accessed by the WLAN user terminal 20; the AP 10 sends the user data sent by the WLAN user terminal 20 to the AC address through the established data tunnel between itself and the AC according to the found AC address.
The present invention also provides an AP, as shown in fig. 5, including: a mapping creation unit 101 and a data forwarding unit 102; wherein,
a mapping creating unit 101, configured to receive a network name selected by the WLAN user terminal 20 according to the data service, and create a mapping relationship between the network name and an AC address of the access controller according to the selected network name;
the data forwarding unit 102 is configured to send the user data sent by the WLAN user terminal 20 to the AC30 corresponding to the network name of the access network according to the mapping relationship between the network name and the AC address created by the mapping creating unit after the WLAN user terminal 20 accesses the access network.
The invention also provides a WLAN user terminal, which is used for selecting the network name from the network names broadcasted by the AP according to the data service of the WLAN user terminal.
According to the technical scheme provided by the invention, different network names can be configured for different data services. Because different data services are generally operated by different provincial and urban level operation mechanisms, such as an internet of things service platform deployed by Beijing corporation, when the technical scheme of the invention is not used, the WLAN user terminals of other provinces must be accessed to a local backbone network firstly and then routed to the internet of things service platform deployed by the Beijing corporation, so that the internet of things service can be opened or accessed; if the technical scheme of the invention is utilized, other provincial WLAN user terminals can be routed to the Internet of things service platform deployed by Beijing company when starting service connection, thereby reducing the roundabout of user data and improving the efficiency of accessing services by users.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (13)
1. A method for dividing flow in wireless local area network is characterized in that an access point AP receives a network name selected by a WLAN user terminal according to data service, and creates a mapping relation between the network name and an access controller AC address according to the selected network name; the method further comprises the following steps:
after the WLAN user terminal accesses the access network, the AP sends user data sent by the WLAN user terminal to the AC corresponding to the network name of the access network according to the mapping relation between the network name and the AC address;
before creating the mapping relationship between the network name and the AC address of the access controller according to the selected network name, the method further includes: and the name server verifies the IP address of the AP according to a local pre-configured IP address library of the credible AP.
2. The method of claim 1, wherein the AP receives a network name selected by the WLAN user terminal according to the data service, and creates a mapping relationship between the network name and the AC address according to the selected network name, wherein the mapping relationship comprises:
AP broadcasts the network name;
the AP receives a network name selected by the WLAN user terminal according to the data service, and sends an inquiry request message to the name server according to the network name selected by the WLAN user terminal; the name server locally inquires a corresponding AC address according to the network name in the inquiry request message and returns the AC address to the AP;
and the AP establishes a mapping relation between the network name and the AC address according to the selected network name and the inquired AC address, and establishes a data tunnel between the AP and the AC address.
3. The method of claim 2, wherein the AP broadcasts a network name of:
each AP in the access system sends out broadcast messages regularly according to a preset broadcast period; the broadcast message carries an indication frame, and a network name is added to an SSID field of the indication frame.
4. The method of claim 2, further comprising: the method comprises the steps that the corresponding relation between a network name and an AC address is pre-configured in a name server;
correspondingly, the name server locally queries the corresponding AC address according to the network name in the query request message and returns the AC address to the AP, including:
and when the IP address of the AP exists in the IP address library of the credible AP, the name server searches the AC address corresponding to the network name according to the network name in the query request message and the corresponding relation between the locally stored network name and the AC address, and sends the found AC address to the AP through a query response message.
5. The method of claim 4, further comprising:
and when the IP address of the AP does not exist in the IP address library of the credible AP, the name server refuses to inquire the AC address for the AP and sends an inquiry failure message to the AP.
6. The method of claim 2, 4 or 5,
the name server is integrated in a Domain Name System (DNS);
the integration mode is to add a corresponding relation table in the DNS server, and the table entry in the corresponding relation table is the corresponding relation between the network name and the AC address.
7. The method of claim 1, wherein the AP sends the user data sent by the WLAN user terminal to the AC corresponding to the network name of the access network according to the mapping relationship between the network name and the AC address:
the AP searches an AC address corresponding to the network name of the access network in the stored mapping relation between the AC address and the network name according to the access network accessed by the WLAN user terminal;
and the AP sends the user data sent by the WLAN user terminal to the AC address through the established data tunnel between the AP and the AC according to the found AC address.
8. A method for traffic segmentation in a wireless local area network, the method comprising:
the WLAN user terminal selects a network name from the network names broadcasted by the AP according to the data service of the WLAN user terminal; wherein the method further comprises: the name server verifies the IP address of the AP according to a local pre-configured IP address library of a trusted AP; and the network name is used for the AP to establish a mapping relation between the network name and the AC address, and sending the user data to the corresponding AC according to the mapping relation between the network name and the AC address.
9. The method of claim 8, wherein the WLAN user terminal selects a network name from the network names broadcast by the AP according to its own data service:
when a WLAN user terminal searches a network, the WLAN user terminal receives broadcast messages sent by all APs and acquires at least two network names from the broadcast messages;
the WLAN user terminal autonomously selects a network name from the network names broadcasted by the AP according to the data service of the WLAN user terminal;
and after the network name is selected, establishing connection between the access networks corresponding to the network name.
10. A system for splitting traffic in a wireless local area network, the system comprising: WLAN user terminal, AP, AC; wherein,
the AP is used for receiving the network name selected by the WLAN user terminal according to the data service and creating a mapping relation between the network name and the AC address according to the selected network name; the network access device is also used for sending the user data sent by the WLAN user terminal to the AC corresponding to the network name of the access network according to the mapping relation between the network name and the AC address;
the WLAN user terminal is used for selecting a network name from the network names broadcasted by the AP according to the data service of the WLAN user terminal;
the system further comprises:
and the name server is used for verifying the IP address of the AP according to a local pre-configured IP address library of the credible AP.
11. The system of claim 10,
the name server is used for storing the corresponding relation between the network name and the AC address;
and the name server is also used for locally inquiring the corresponding AC address according to the network name in the inquiry request message and returning the AC address to the AP when receiving the inquiry request message sent by the AP.
12. An access point, AP, comprising: a mapping creation unit and a data forwarding unit; wherein,
the mapping creation unit is used for receiving the network name selected by the WLAN user terminal according to the data service and creating the mapping relation between the network name and the AC address of the access controller according to the selected network name; verifying the IP address of the AP through the name server according to a local pre-configured IP address library of the credible AP to obtain a verification result of the name server;
and the data forwarding unit is used for sending the user data sent by the WLAN user terminal to the AC corresponding to the network name of the access network according to the mapping relation between the network name and the AC address created by the mapping creation unit after the WLAN user terminal accesses the access network.
13. A WLAN user terminal, characterized in that, the WLAN user terminal is configured to select a network name from network names broadcast by an AP according to its own data service; the AP is an AP which verifies the IP address of the AP through a name server according to a local pre-configured IP address library of a credible AP; and the network name is used for the AP to establish a mapping relation between the network name and the AC address, and sending the user data to the corresponding AC according to the mapping relation between the network name and the AC address.
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