CN1231021C - Method for treating connection relationship between services at user terminals in wireless local area network - Google Patents

Abstract

The present invention discloses a method of treating the connection relation of a user terminal service in a wireless local network, which is suitable for an interactive network of a wireless local network, which is at least composed of a user terminal of a wireless local network (WLAN), an access unit of a wireless local network, a service controlling unit and a user information memorizing unit. The method comprises that: marks denoting the attachment relation and the separation relation between the user terminal and the WLAN network are respectively arranged in the user terminal of a WLAN and the service controlling unit; corresponding marks are modified at the same time by interactive establishing between the user terminal of a WLAN and the WLAN network or the cancellation of the service connection between the user terminal and a network. The method can identify the service connection relation of the current user terminal of a WLAN and the service controlling unit; moreover, the information in the user information memorizing unit and the information in the service controlling unit are kept consistent, the transmission of redundant messages are avoided, and the work efficiency of a system is improved.

Description

The method of processing connection relationship of user terminal service in wireless local area network

technical field

The invention relates to a processing technology of user information, in particular to a method for processing connection relationship of user terminal services in a wireless local area network.

Background technique

As users have higher and higher requirements for wireless access rate, Wireless Local Area Network (WLAN, Wireless Local Area Network) emerges at the historic moment, which can provide high-speed wireless data access in a small range. The wireless local area network includes many different technologies. Currently, a widely used technical standard is IEEE802.11b, which uses a 2.4GHz frequency band. Another technology using this frequency band is Bluetooth (Bluetooth) technology. Other new technologies such as IEEE 802.11a and ETSI BRAN Hiperlan2 use the 5GHz frequency band.

Although there are many different wireless access technologies, most WLANs are used to transport Internet Protocol (IP) packet data packets. For a wireless IP network, the specific WLAN access technology it adopts is generally transparent to the upper-layer IP. Its basic structure is to use the access point (AP) to complete the wireless access of the user terminal, and to form an IP transmission network through network control and connection equipment connection.

With the rise and development of wireless local area network (WLAN) technology, WLAN and various wireless mobile communication networks, such as: GSM, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, time division duplex-synchronous code division The intercommunication of multiple access (TD-SCDMA) system and CDMA2000 system is becoming the focus of current research. In the 3rd Generation Partnership Project (3GPP) standardization organization, a simplified network structure for interworking between a WLAN system and a 3GPP system is shown in FIG. 1 . The user terminal can be connected to the Internet (Internet) or the intranet (Intranet) through the WLAN access network, and can also be connected to the packet domain of the 3GPP network through the WLAN access network. It can be seen that WLAN, as a wireless access technology providing IP communication, can interact with various other network connections.

When a WLAN is connected to other networks, the authentication, authorization, and accounting of the connection will generally be set up with a corresponding application server to control the processing, such as: the authentication, authorization, and accounting (AAA) server in the 3GPP system; the user's information will be stored in the information storage unit For example, it is managed by a home subscriber server (HSS, Home subscriber server) or a home location register (HLR) in the 3GPP system. Therefore, when authentication, authorization and billing are required, the corresponding application server will request the information from the information storage unit and temporarily store it in the server. The application server will not release the stored user information until the user terminates the service. The so-called release is It means that the application server can delete the relevant data of the suspended user. In the implementation, the relevant data can be deleted immediately after the user is offline, or it can be kept for a certain period of time and then deleted, so that the user can use it when he logs in again. When the user's information changes in the information storage unit where the user is located, the storage unit will promptly notify the corresponding application server to refresh the data.

In practical applications, there is no corresponding mechanism support in the 3GPP technical specification for the attach process in which the user requests access to the WLAN network, that is, the WLAN attach process. This makes it impossible for the WLAN user to know whether he has successfully accessed the WLAN network and whether he has been able to use the services provided by the WLAN network. At the same time, the AAA server cannot know whether the user can use the service based on the WLAN. Similarly, there is no corresponding mechanism support in 3GPP for the separation (detach) process that the user stops using the WLAN network and separates from the WLAN network, that is, the WLAN detach process, so that the WLAN user cannot know whether he has successfully detached from the WLAN At the same time, the AAA server cannot know whether the user can no longer use the service based on WLAN.

In addition, the user information needs to be synchronized between the application server and the information storage unit, otherwise unnecessary signaling will be wasted. For example: at present, when a user accesses or separates from a WLAN network, the user's service connection relationship information will only be updated in the service control unit, that is, the user information application server, such as an AAA server, and will not notify the user's information storage unit, such as HLR/HSS, in this way, since the user information storage unit does not know which user information service connection relationship has changed, the user data stored in the user information storage unit will be unreliable. In the subsequent processing, the information storage unit may also request the service control unit to provide user information, such as user service connection relationship, user data, etc., resulting in unnecessary waste of signaling and useless occupation of system resources. When the number of orders is large, it may also affect the normal operation of the system.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a method for processing the service connection relationship of the user terminal in the wireless local area network, which can clarify the service connection relationship of the current WLAN user terminal, so as to effectively communicate between the WLAN user terminal and the service control unit. Interaction and control operations.

Another object of the present invention is to provide a method for processing the service connection relationship of user terminals in a wireless local area network, so that the user information in the user information storage unit and the service control unit are kept consistent, thereby avoiding sending redundant messages, and further improving system reliability. work efficiency.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

A method for processing user terminal service connection relations in a wireless local area network, suitable for a wireless local area network interactive network composed of at least a wireless local area network (WLAN) user terminal, a wireless local area network access unit, a service control unit, and a user information storage unit, the method It includes: setting a flag in the service control unit indicating the attachment or separation of the user terminal and the WLAN network service connection relationship, and modifying the flag when establishing or canceling the service connection between the user terminal and the network between the WLAN user terminal and the WLAN network.

Wherein, a flag indicating that the connection relationship between the user terminal and the WLAN network service is attached or detached may also be set in the WLAN user terminal.

Wherein, the service control unit may be an Authentication Authorization Accounting (AAA) server; the user information storage unit may be a Home Subscriber Server (HSS), or a Home Location Register (HLR).

Establishing a service connection between the user terminal and the network is to attach the WLAN user terminal to the WLAN network, and the attachment process further includes:

a11. When the user terminal accesses the WLAN network, the WLAN user terminal sends an attach request message to the service control unit via the WLAN access unit;

a12. After receiving the request, the service control unit judges whether to allow the current WLAN user terminal to establish a service connection, if not allowed, then reject the user's attachment request, and end this process; otherwise, the service control unit records the user service connection of the current WLAN user terminal The relationship is WLAN attach, and then an access response message is sent back to the WLAN user terminal.

Wherein the attachment request message of step a11 contains the permanent or temporary identification of the current WLAN user terminal; after receiving the request, the service control unit judges whether the permanent or temporary identification of the user contained in the request message is valid, if not, Then actively initiate an inquiry process to obtain the effective identification of the user terminal; if there is, the service control unit judges whether it has the user information of the currently requesting user terminal, if not, the service control unit requests the corresponding user information storage unit The data information of the user terminal; otherwise, go directly to step a12.

The determination of whether to allow the current WLAN user terminal to establish a service connection in step a12 is implemented by an authentication process.

The method further includes: after receiving the access response message sent by the service control unit, the WLAN user terminal changes its own related service connection relationship identifier to indicate that the WLAN user terminal has established a service relationship with the WLAN network.

Canceling the service connection between the user terminal and the network is to separate the WLAN user terminal from the WLAN network. The separation process further includes: separating the WLAN user terminal from the WLAN network, canceling the corresponding service connection relationship, and the service control unit records the current WLAN user terminal The user service connection relationship is WLAN separation; the separation process is explicit separation or implicit separation.

When the explicit separation is a separation process initiated by the WLAN user terminal, the method further includes: a21. The WLAN user terminal sends a separation notification to the network, and the notification includes the reason for the separation of the WLAN user terminal;

a22. After receiving the detachment notification, the service control unit records the current user service connection relationship of the WLAN user terminal as WLAN detachment.

The separation process further includes: the service control unit sends back a response message to the current WLAN user terminal, prompting that the user terminal has been separated from the WLAN network.

When the explicit separation is a separation process initiated by the WLAN network, the method further includes:

The service control unit sends a separation notification to the WLAN user terminal, which includes the reason for the separation of the WLAN user; at the same time, the service control unit records the current user service connection relationship of the WLAN user terminal as WLAN separation.

When the separation is implicit separation, the method further includes: after the WLAN network actively initiates at least one contact with the WLAN user terminal, and the WLAN user terminal still does not respond, the service control unit directly records the user service connection relationship of the WLAN user terminal as WALN separation. The implicit separation processing procedure further includes: when the corresponding WLAN user terminal in the service control unit has not been in contact with the WLAN network for more than a preset time, the WLAN network will actively initiate at least one process of contacting the WLAN user terminal.

The flag set in the WLAN user terminal or the service control unit is a dedicated identifier defined separately, or implemented by using an existing identifier. All bearer messages in the process of establishing or canceling a service connection are implemented by individually defined dedicated messages, or by using messages in existing processes.

The above attachment or detachment process further includes: setting a sign representing the connection relationship between the WLAN user terminal and the WLAN network service in the user information storage unit; after the service control unit records the user service connection relationship of the current WLAN user terminal, sends Updating user data instruction: After receiving the user information storage unit, update the user service connection relationship information of the current user terminal, and return the update user data response to the service control unit after updating the user service connection relationship information.

Therefore, when the user service connection relationship changes to WLAN attachment, the method further includes:

c11. The service control unit sets the user connection relationship of the current WLAN user terminal to WLAN attachment, and simultaneously sends an attachment notification to the user information storage unit;

c12. After receiving the attach notification, the user information storage unit sets the user service connection relationship of the corresponding WLAN user terminal as WLAN attach, and then returns a response message to the service control unit.

When the user service connection relationship changes to WLAN separation, the method further includes:

c21. The service control unit sets the user service connection relationship of the current WLAN user terminal to WLAN separation, and simultaneously sends a separation notification to the user information storage unit;

c22. After receiving the detachment notification, the user information storage unit sets the user service connection relationship of the corresponding WLAN user terminal to WLAN detachment, and then returns a response message to the service control unit.

When the user information changes to WLAN separation, the method may further include:

c31. The service control unit deletes the user data of the current user terminal stored by itself, and simultaneously sends a user information deletion notice to the user information storage unit;

c32. After receiving the deletion notification, the user information storage unit records that the user data of the current WLAN user terminal has been deleted in the service control unit, and then returns a response message to the service control unit.

Wherein, the deletion of user information in step c32 is to delete the information of the user terminal from the service control unit immediately after the user terminal is disconnected from the WLAN network; or to delete the user terminal information after the user terminal is disconnected from the WLAN network; The information of the terminal is deleted after being retained by the service control unit for a certain period of time.

Therefore, the method for processing the service connection relationship of the user terminal in the wireless local area network provided by the present invention clearly proposes the WLAN attach (attach) process when the WLAN user terminal accesses the WLAN network and the WLAN separation of the WLAN user terminal from the WLAN network ( detach) process, so that the user terminal and the service control unit can clearly and effectively interact and control the attached or detached service connection relationship of the WLAN user terminal. In addition, it can clearly indicate whether the current user terminal has successfully connected to the network and enjoyed the service based on the WLAN network; or whether the current user terminal has successfully separated from the WLAN network and terminated the service based on the WLAN network.

In addition, when the user accesses the WLAN network or separates from the WLAN network, the user information storage unit or the service control unit will send a message to notify the other party in time, so that the user data between the user information storage unit and the service control unit can be synchronized in time to avoid It eliminates redundant signaling and unnecessary system resource occupation due to user data asynchrony, improves system work efficiency and effectiveness of message transmission, and thus provides WLAN users with more convenient and diverse services.

Description of drawings

Figure 1 is a schematic diagram of a simplified network structure for interworking between WLAN and 3GPP systems at present;

FIG. 2 is a schematic structural diagram of a system for implementing user service connection relationship change processing in a WLAN;

Fig. 3 is the flowchart that the method of the present invention realizes;

FIG. 4 is a schematic diagram of an interaction flow when a user accesses a WLAN;

5 is a schematic diagram of an explicit separation interaction process initiated by a user terminal in a WLAN;

6 is a schematic diagram of an explicit separation interaction process initiated by a WLAN network in a WLAN;

FIG. 7 is a schematic diagram of an implicit separation interaction process initiated by a WLAN network in a WLAN;

Fig. 8 is a diagram of an embodiment of the process between the service control unit and the user information storage unit in the WLAN detach process;

FIG. 9 is a diagram of another embodiment of the process between the service control unit and the user information storage unit in the WLAN detach process.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

In view of the current situation of WLAN technology, the present invention proposes that when the service connection relationship of WLAN user terminals in the WLAN network changes, each part related to the user service connection relationship information, such as: service control unit, user information storage unit, An interactive method for handling changes in user service connection relationships. Since the service connection relationship between the user terminal and the network is divided into two types: attachment and detachment, the present invention changes the WLAN user service connection relationship and the service control unit service connection relationship when the WLAN user accesses the WLAN network and separates the WLAN network, so that Both the user terminal and the WLAN network can determine whether the user has been connected normally, and the WLAN network can apply the WLAN service; or the user terminal has been separated from the WLAN network, and the WLAN service needs to be terminated.

Realize the WLAN system structure of the interactive method of the present invention as shown in Figure 2, comprise: WLAN user terminal 201, WLAN access unit 202, service control unit 203 and user information storage unit 204, wherein, WLAN access unit 202 is in charge of user terminal access and routing management, so that the user terminals in it can communicate with each other through the IP protocol, and connect and communicate with other IP networks. The WLAN access unit generally includes an access point (AP) and an access controller (AC ), may also include routers for network connection and related servers for network control, etc. The service control unit 203 is equivalent to the user control center in the WLAN system. It mainly controls whether the user can access the WLAN network through authentication, and charges each user terminal in the network. The service control unit can be a user The subscription information application unit, in actual application, the Authentication Authorization Accounting (AAA) server is a specific example of the service control unit. The user information storage unit 204 is used to store information of all users, which can be realized by HSS/HLR.

The realization process of the inventive method as shown in Figure 3, comprises the following steps:

Set in advance in the WLAN user terminal and the service control unit the sign indicating that the user terminal and the WLAN network service connection relationship are attached or separated; the sign can be a separately defined dedicated identifier, or directly use the existing logo.

a. When the WLAN user terminal establishes a connection with the WLAN network, execute the attachment process, and after success, the flags in the user terminal and the service control unit are respectively set to WLAN attachment.

b. When the WLAN user terminal is separated from the WLAN network, the service connection between the user terminal and the network can be canceled through the interaction between the WLAN user terminal and the WLAN network, and the corresponding flag can be modified at the same time; it is also possible to directly modify the service connection relationship without an interaction process flag, for example: when the wireless connection is interrupted and the two sides cannot be connected, the user terminal can directly set the service connection relationship flag as WLAN separation.

Among them, the reason why the connection between the terminal and the network service is canceled without notifying the network is that the terminal is powered off, the WLAN card is directly pulled out from the computer or crashes, etc. After the network detects that the terminal cannot be connected, it will also reset the service connection of the user. The relationship flag is WLAN separation.

Take the AAA server as the service control unit as an example: when the user terminal accesses the WLAN network, the AAA server judges whether it has the user's information, if not, downloads the corresponding user data from the user information storage unit, such as HSS/HLR And store it, after the user authentication is successful, the AAA server records the current user service connection relationship as WLAN Attach, and at the same time gives the user a corresponding instruction, prompting the user to be attached to the WLAN network; the user terminal connects to the corresponding service Changes in relationships or flags to indicate that WLAN-based services are available.

The WLAN Attach process of the user terminal is as shown in Figure 4. In this embodiment, HSS/HLR is used as the user information storage unit, and the process includes the following steps:

Step 401: When the user needs to access the WLAN network, first establish a wireless connection between the user terminal and the WLAN network. After the connection is established, the WLAN user terminal sends an instruction to request access to the WLAN network to the AAA server via the WLAN access unit, The instruction needs to clearly indicate that the type of network that the user requests to access is a WLAN network, and include the permanent or temporary identification of the user.

Step 402: After receiving the request, the AAA server first judges whether the user terminal's request for access message provides a valid user permanent or temporary identifier. If not, the network needs to actively initiate an inquiry process to obtain the user terminal's ID. Valid identification; if there is, then the AAA server continues to judge whether the user information of the current requesting user terminal exists in itself, if there is no data information of the user in the AAA server, then enter step 403; otherwise directly enter step 405.

Steps 403-404: the AAA server requests the corresponding HLR/HSS for the data information of the user terminal; the HLR/HSS inserts the data information of the user terminal into the AAA server.

Step 405: the WLAN network starts an authentication process for the current WLAN user terminal.

Step 406: After the network successfully authenticates the current WLAN user terminal, the AAA server records the user service connection relationship as WLAN attached, and proceeds to step 407; if the authentication is unsuccessful, the AAA server rejects the user's access request, and ends this process.

Steps 407-408: The AAA server sends an update user data instruction to the HLR/HSS to update the data information of the current WLAN user terminal; after the HLR/HSS updates the user service connection relationship information, it sends a response message for updating user data to the AAA server. This step can also be omitted, so as to avoid frequent refreshing of the user service connection relationship information in the HLR/HSS.

Step 409: the AAA server sends back an access response message to the WLAN user, prompting the user to be attached to the WLAN network, and indicating to the user that the WLAN network is available. After receiving the message, the user terminal needs to change the relevant flag on the terminal to indicate that the WLAN service is available, such as setting a WLAN service connection relation flag, and enter the activation state at this time.

For the WLAN detach process of the user terminal, according to its separation form, it can be divided into: explicit separation (Explicit WLAN detach) and implicit separation (Implicit WLAN detach); for the Explicit WLAN detach process, it can be further divided into: by WLAN Initiated by the user terminal, or initiated by the WLAN network. For an explicit WLAN detach initiated from a user terminal, the user terminal needs to specify the reason for the detach in the detach message sent to the WLAN network; similarly, for an explicit WLAN detach initiated from the WLAN network, the network needs to specify the reason for the detach in the detach message sent to the user The reason for detach. The Implicit WALN detach process is applied to the detach process initiated by the network when the user has not been in contact with the WLAN network for a long time. In this case, the network does not need to notify the end user after the detach process ends.

These detach situations are discussed below:

1) When the WLAN user terminal initiates Detach from the WLAN network, the user terminal notifies the AAA server that the WLAN service needs to be terminated, and the service control unit, that is, the AAA server updates the corresponding service connection relationship of the user to WLAN detach. As shown in Figure 5, this process includes the following steps:

Step 501: When the WLAN user terminal requests to be detached from the WLAN network, the WLAN user terminal sends a detach notification to the network, and the notification includes that the network type for which the WLAN user terminal is detached is a WLAN network and the reason for the detach.

Step 502: After receiving the notification, the AAA server records the user service connection relationship of the user terminal as WLAN detach.

Step 503: The AAA server sends back a response message to the current WLAN user terminal. This step is optional. The AAA server may send back a response or not send a response to the user terminal according to the actual situation, to remind the user that the user has been separated from the WLAN network. For example: For reasons of operation and maintenance, the WLAN detach process may only need to set the corresponding flag in the AAA server and HLR/HSS, and does not need to notify the user terminal; also, the AAA server detects that the user terminal does not respond and needs to be modified If the service connection relationship is separated, it is not necessary to send a notification to the user terminal at this time, and it is sufficient to directly set the service connection relationship flag to WLAN separation.

2) The WLAN detach process is initiated by the WLAN network. When the WLAN network is due to network reasons, the WLAN network may actively initiate the WLAN detach process to the user. This process can be initiated from the AAA server or from the HSS/HLR. In this embodiment, it is initiated from the AAA server, and then the AAA server updates the current user. The corresponding service connection relationship of the terminal is WLAN detach. As shown in Figure 6, this process includes the following steps:

Step 601: The WLAN network requests the WLAN user terminal to detach from the WLAN network, and the AAA server sends a detach notification to the WLAN user terminal, and the notification includes that the network type of the WLAN user detachment is a WLAN network and the reason for the detach.

Step 602: At the same time, the AAA server records the user service connection relationship of the WLAN user terminal as WLAN detach.

Step 603: The current WLAN user terminal sends back a response message to the AAA server, where the response message is used to indicate that the user has been separated from the WLAN network, and the WLAN-based service of the user has been terminated. This step is optional, and the user terminal may or may not send a response back to the AAA server according to actual conditions.

3) Implicit WLAN detach process. When the user has not been in contact with the WLAN network for a long time, the WLANdetach process is initiated by the AAA server, and the AAA server updates the service connection relationship of the WLAN user to WLAN detached, indicating that the user can no longer use the WLAN service. At this time, the AAA server does not need to send any instructions to the user. information. As shown in Figure 7, the following steps are included:

Steps 701-702: After the AAA server actively initiates contact with the WLAN user terminal for a certain number of times, if the user terminal still does not respond, the AAA server directly records the user service connection relationship of the WLAN user terminal as WALN detach. Among them, the specific number of times that the AAA server actively initiates contact with the user terminal can be preset according to the actual situation; The set corresponding timer expires, causing the AAA server to initiate a contact process with the user terminal; it may also be that other client applications request the AAA server to contact the user terminal.

In the above-mentioned explicit and implicit WLAN detach processes, in order to ensure data synchronization between the service control unit and the user information storage unit, the service control unit has two processing methods for Detach: ① record the user service connection relationship as WLAN Detach, and Send a user Detach notification to the user information storage unit, and the user information storage unit places a corresponding mark on the user's current service connection relationship; A user information deleted notification is sent, and the user information storage unit records the user's deleted flag in the service control unit.

Then, the interaction processing flow between the service control unit and the user information storage unit based on the first method, as shown in Figure 8, specifically includes the following steps:

Steps 801-802: When the AAA server processes the Detach, the current user service connection relationship of the user terminal is set as the WLAN Detach sign, and the AAA server sends a Detach notification to the HSS/HLR, indicating that the user has been separated from the WLAN network;

Steps 803-804: After receiving the notification, the HSS/HLR also sets the current user service connection relationship of the corresponding user terminal as the WLAN Detach flag, and then returns a response message to the AAA server, indicating that the user service connection relationship has been correctly updated.

The interaction processing flow between the service control unit and the user information storage unit based on the second method, as shown in Figure 9, specifically includes the following steps:

Steps 901-902: When the AAA server processes Detach, delete the user data of the user terminal stored in the AAA server, and at the same time, the AAA server sends a user information deletion notification to the HSS/HLR, indicating that the data of the user terminal has been removed from the AAA server. delete in

Steps 903-904: After receiving the notification, the HSS/HLR records that the user data of the corresponding WLAN user terminal has been deleted in the AAA server, and then returns a response message to the AAA server, indicating that the user data deleted flag has been set.

In the above attach or detach process, the user information storage unit also presets a flag indicating the connection relationship between the WLAN user terminal and the WLAN network service.

For the bearer messages of the above-mentioned various interaction methods, the interactive operation can be completed by defining a dedicated message separately, such as: the Mobile Application Part (MAP) protocol, or the Remote Authentication Dialing User Service (RADIUS) protocol, or the DIAMETER protocol, etc.; Interaction can be done by adding parameters to existing messages. The user information described in the above solutions may be user subscription information.

In a word, the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (22)

1, in a kind of WLAN (wireless local area network) to the processing method of subscriber terminal service annexation, be applicable to the WLAN (wireless local area network) Internet that constitutes by WLAN (wireless local area network) WLAN user terminal, WLAN (wireless local area network) access unit, service control unit and user information storage unit at least, it is characterized in that this method comprises:

It is the sign that adheres to or separate with wlan network service annexation that the expression user terminal is set in service control unit, when foundation or cancellation user terminal are connected with internetwork service between WLAN user terminal and the wlan network, revises described sign.

2, method according to claim 1 is characterized in that: between described user terminal and network the service of setting up be connected be with the WLAN user terminal attached on the wlan network, this attachment flow comprises:

A11. when user terminal inserted wlan network, the WLAN user terminal sent Attach Request message via the WLAN access unit to service control unit;

A12. after service control unit is received request, judge whether to allow the current user terminal of WLAN service of setting up to connect, if do not allow, then refusing user's adheres to request, process ends; Otherwise it is that WLAN adheres to that the user of service control unit record current user terminal of WLAN serves annexation, inserts response message to the loopback of WLAN user terminal then.

3, method according to claim 2 is characterized in that: the permanent or provisional sign that contains current user terminal of WLAN in the Attach Request message of step a11; After service control unit is received this request, judge whether the permanent or provisional sign of the user of containing in this request message is effective,, then initiatively initiate effective sign that the inquiry flow process is obtained this user terminal if do not have; If have, then service control unit judges self whether there is the current user profile of sending the request user terminal, if do not have, then service control unit is to the data message of corresponding this user terminal of user information storage unit request; Otherwise directly enter step a12.

4, method according to claim 2 is characterized in that: the judgement that whether allows the current user terminal of WLAN service of setting up to connect described in the step a12 is realized by authorizing procedure.

5, method according to claim 2, it is characterized in that this method further comprises: after the WLAN user terminal is received the access response message that service control unit sends out, change the related service annexation sign of self, indicate that the WLAN user terminal sets up service relation with wlan network.

6, method according to claim 1, it is characterized in that: to be connected be that the WLAN user terminal is separated from wlan network in the cancellation service between described user terminal and network, this separation process comprises: the WLAN user terminal separates with wlan network, the corresponding service of cancellation annexation, it is that WLAN separates that the user of service control unit record current user terminal of WLAN serves annexation; This separation process is explicit separation, or implicit detach.

7, method according to claim 6 is characterized in that described explicitly when being separated into the separation process of being initiated by the WLAN user terminal, and this method further comprises:

The a21.WLAN user terminal sends disassociation notification to network, comprises the reason that the WLAN user terminal separates in the notice;

A22. after service control unit was received this disassociation notification, it was that WLAN separates that the user of record current user terminal of WLAN serves annexation.

8, method according to claim 7, it is characterized in that this method further comprises: service control unit is to current user terminal of WLAN back response message, and reminding subscriber terminal separates from wlan network.

9, method according to claim 6 is characterized in that described explicitly when being separated into the separation process of being initiated by wlan network, and this method further comprises:

Service control unit sends disassociation notification to the WLAN user terminal, comprises the reason that WLAN user separates in the notice; Simultaneously, the user of service control unit record current user terminal of WLAN to serve annexation be that WLAN separates.

10, method according to claim 6 is characterized in that describedly when being separated into implicit detach, and this method further comprises:

After wlan network initiatively initiated at least once to get in touch with the WLAN user terminal, the WLAN user terminal did not still have response, then the service control unit user that directly writes down this WLAN user terminal to serve annexation be that WALN separates.

11, method according to claim 10, it is characterized in that this method also further comprises: the time that corresponding WLAN user terminal and wlan network are not got in touch in service control unit surpasses the predefined time, and wlan network is the initiation process of at least once getting in touch with this WLAN user terminal initiatively.

12, method according to claim 1 is characterized in that: the bearer messages in foundation or the cancellation service connection procedure is realized by the specific messages of independent definition, or is utilized the message in the existing procedure to realize.

13, according to claim 2 or 6 described methods, it is characterized in that this method further comprises: the sign that expression WLAN user terminal and wlan network service annexation is set in user information storage unit; After the user of service control unit record current user terminal of WLAN serves annexation, send the updating user data indication to user information storage unit; After user information storage unit was received, the user who upgrades active user's terminal served connection relation information, upgraded the user and served and return updating user data after the connection relation information and respond to service control unit.

14, method according to claim 13 is characterized in that: when the user serves annexation when being changed to WLAN and adhering to, this method further comprises:

C11. user's annexation of service control unit current user terminal of WLAN is set to WLAN and adheres to, and sends to user information storage unit simultaneously and adheres to notice;

C12. after user information storage unit received that this adheres to notice, the user of corresponding WLAN user terminal served annexation and is set to WLAN and adheres to, and returns response message to service control unit then.

15, method according to claim 13 is characterized in that: when the user serves annexation when being changed to WLAN and separating, this method further comprises:

C21. the user of service control unit current user terminal of WLAN serves annexation and is set to the WLAN separation, sends disassociation notification to user information storage unit simultaneously;

C22. after user information storage unit was received this disassociation notification, the user of corresponding WLAN user terminal served annexation and is set to the WLAN separation, returns response message to service control unit then.

16, method according to claim 13 is characterized in that: when user profile was changed to the WLAN separation, this method further comprised:

C31. service control unit is deleted the user data of active user's terminal of self storing, and sends user profile deletion notice to user information storage unit simultaneously;

C32. after user information storage unit was received this deletion notice, the user data of record current user terminal of WLAN was deleted in service control unit, returns response message to service control unit then.

17, method according to claim 16 is characterized in that: the described deletion user profile of step c32 be user terminal and wlan network disconnect is connected after, the information of from service control unit, deleting this user terminal immediately.

18, method according to claim 16 is characterized in that: the described deletion user profile of step c32 be user terminal and wlan network disconnect is connected after, the information of this user terminal is deleted after service control unit keeps certain hour again.

19, method according to claim 1 is characterized in that: described service control unit is the authentication and authorization charging aaa server.

20, method according to claim 1 is characterized in that: described user information storage unit is home signature user server HSS, or is attaching position register HLR.

21, method according to claim 1 is characterized in that: it is the sign that adheres to or separate with wlan network service annexation that the expression user terminal is set in described WLAN user terminal.

22, according to claim 1 or 21 described methods, it is characterized in that: described expression user terminal is that the sign that adheres to or separate adopts the specific identity of definition separately with wlan network service annexation, or utilizes existing sign to realize.

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