WO2015017964A1

WO2015017964A1 - Method, device and system for discovering wireless access point controller

Info

Publication number: WO2015017964A1
Application number: PCT/CN2013/080811
Authority: WO
Inventors: 徐勇; 甄斌; 刘永俊; 邢志浩
Original assignee: 华为技术有限公司
Priority date: 2013-08-05
Filing date: 2013-08-05
Publication date: 2015-02-12

Abstract

Disclosed are a method, device and system for discovering a wireless access point controller, which relate to the field of communications, for facilitating an AC to immediately establish a connection with an AP, thereby being beneficial for the AC to manage a terminal. The method for discovering a wireless access point controller comprises: when detecting an unregistered terminal which enters a network coverage region, an access network discovery and selection function (ANDSF) server acquires address information about a wireless access point controller (AC) corresponding to address information about the unregistered terminal; and sends the address information about the AC to the unregistered terminal. The present invention is mainly applied to a wireless access network.

Description

Method, device and system for discovering wireless access point controller

The present invention relates to the field of communications, and in particular, to a method, device and system for discovering a wireless access point controller. Background technique

With the development of communication technology, Wireless LAN (WLAN) has become an important means of shunting the cellular network. After the user equipment (User Equipment, UE) enters the coverage area of the cellular network, it can connect to the WLAN in the cell of the cellular network, and the WLAN provides services to meet the service requirements of the UE, thereby offloading the cellular network. At present, more and more UEs are beginning to provide multiple access methods. For example, the UE can simultaneously have the functions of a mobile access point (AP), so that wireless-fidelity (wifi) technology can be used. Other UEs in the wireless network provide services. In the wifi network, the Wireless Access Point Controller (AC) acts as a control device to control the access and load of the AP.

Since the wifi network uses the 2.4 GHz public band, the band resources are limited. When there are more mobile APs, if there is no AC for control coordination, a large number of mobile APs will occupy the band resources and transmit at the same time, which will cause great interference to the wifi network. However, in the existing scenario, the mobile AP enters and moves out at a faster speed. The mobile AP that enters the wifi network is difficult to establish a connection with the AC. The AC cannot effectively manage the AP, and thus cannot reduce the number of mobile APs to the Wif i network. Interference.

Summary of the invention

Embodiments of the present invention provide a method, device, and method for discovering a wireless access point controller The system facilitates the establishment of a connection between the AC and the AP as soon as possible, which is beneficial to the management of the terminal by the AC. In a first aspect, an embodiment of the present invention provides a method for discovering a wireless access point controller, including:

When detecting an unregistered terminal entering the wireless fidelity wi fi network coverage area, the access network discovery and selection function ANDSF server acquires address information of the wireless access point controller AC corresponding to the geographical location of the unregistered terminal The unregistered terminal is a terminal that does not establish a connection with the wi fi network;

Sending address information of the AC to the unregistered terminal.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the access network discovery and selection function ANDSF server acquires a wireless access point controller AC corresponding to a geographic location of the unregistered terminal Address information, including:

Acquiring the geographical location of the unregistered terminal from the base station of the cellular network; and obtaining the address information of the AC corresponding to the geographic location of the unregistered terminal according to the geographic location of the unregistered terminal.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the acquiring a wireless access point corresponding to a geographic location of the unregistered terminal Before the address information of the controller AC, it also includes:

The ANDSF server periodically selects one information source terminal among the registered terminals and sends a wi fi access network information query request to the information source terminal; the wi fi access network information query request indicates the information source The terminal searches for address information of the AC that meets the preset condition; the registered terminal is a terminal that establishes a connection with the wi fi network;

Receiving the address information of the AC that meets the preset condition returned by the information source terminal; storing the address information of the AC that meets the preset condition, so that when the unregistered terminal enters the wi fi network coverage area, the In the address information of the conditional AC, the address information of the AC corresponding to the geographical location of the unregistered terminal is selected.

In conjunction with the second possible implementation of the first aspect, in a third possible implementation of the first aspect, the method further includes: Obtaining a letter from a base station of the cellular network, where the source terminal is located;

The storing, by the storing, the address information of the AC that meets the preset condition, specifically includes:

And establishing a correspondence between the address information of the AC that meets the preset condition and the geographic location of the information source terminal, and storing the address information of the available AC.

In conjunction with the first aspect, in a fourth possible implementation manner of the first aspect, the address information of the AC that meets the preset condition is pre-configured on the ANDSF server.

A second aspect provides a method for discovering a wireless access point controller, including: a registered terminal receiving an access network discovery and selection function and a wireless fidelity wi fi access network information query request sent by an ANDSF server; The fi access network information query request indicates to find the address information of the available wireless access point controller AC; the registered terminal is a terminal that establishes a connection with the wi fi network;

Obtaining the address information of the AC in the network that meets the preset condition;

Sending the address information of the AC that meets the preset condition to the ANDSF server.

In conjunction with the second aspect, in a first possible implementation manner of the second aspect, the registered terminal maintains a connection with the wi f i network by means of heartbeat communication.

With reference to the second aspect, in a second possible implementation manner of the second aspect, the preset condition includes:

The AC load does not reach the load limit, or

The type of service provided by the AC matches the type of terminal service.

In a third aspect, an ANDSF server is provided, including:

An acquiring unit, configured to obtain address information of a wireless access point controller AC corresponding to a geographic location of an unregistered terminal that enters a wireless fidelity wi fi network coverage area; the unregistered terminal is not associated with the wi fi network Establish a connected terminal;

And a sending unit, configured to send, to the unregistered terminal, address information of the AC acquired by the acquiring unit.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the acquiring unit includes: a first acquiring subunit, configured to acquire, from a base station of the cellular network, a geographical location of the unregistered terminal;

a second obtaining sub-unit, configured to obtain, according to the geographic location of the unregistered terminal obtained by the first acquiring sub-unit, address information of an AC corresponding to a geographical location of the unregistered terminal.

With the third aspect or the first possible implementation manner of the third aspect, in the second possible implementation manner of the third aspect, the sending unit is further configured to periodically select one of the registered terminals. And the information source terminal sends a wi fi access network information query request to the information source terminal; the wi fi access network information query request instructs the information source terminal to search for address information of an AC that meets a preset condition; The registration terminal is a terminal that establishes a connection with the Wi fi network; the ANDSF server further includes:

a receiving unit, configured to receive address information of an AC that is returned by the information source terminal and meets a preset condition;

a storage unit, configured to store, by the receiving unit, address information of an AC that meets a preset condition, so that when the unregistered terminal enters the wi fi network coverage area, select, from the address information of the AC that meets the preset condition Address information of the AC corresponding to the geographical location of the unregistered terminal.

In conjunction with the second possible implementation of the third aspect, in a third possible implementation manner of the third aspect, the acquiring unit is further configured to obtain, from a base station of the cellular network, a geographic location where the information source terminal is located;

The storage unit is specifically configured to establish a correspondence between the address information of the AC that meets the preset condition and the geographical position of the source, the source terminal, and the address information of the AC that meets the preset condition.

In conjunction with the third aspect, in a fourth possible implementation manner of the third aspect, the address information of the AC that meets the preset condition is pre-configured on the ANDSF server.

In a fourth aspect, a terminal is provided, including:

a receiving unit, configured to receive an access network discovery and selection function, and send the wireless by the ANDSF server The wifi access network information query request indicates that the wifi access network information query request indicates the address information of the available wireless access point controller AC; the registered terminal is a terminal that establishes a connection with the wifi network;

An obtaining unit, configured to acquire, after the receiving unit receives the wifi access network information query request, address information of an AC that meets a preset condition in the network;

And a sending unit, configured to send the address information of the AC that meets the preset condition acquired by the acquiring unit to the ANDSF server.

In conjunction with the fourth aspect, in a first possible implementation manner of the fourth aspect, the terminal maintains a connection with the wif i network by means of heartbeat communication.

With reference to the fourth aspect, in a second possible implementation manner of the fourth aspect, the preset condition includes:

The AC load does not reach the load limit, or

The type of service provided by the AC matches the type of terminal service.

A fifth aspect provides a system for discovering a wireless access point controller, the system comprising a server, an unregistered terminal, and a registered terminal; the registered terminal being a terminal establishing a connection with a wireless fidelity wifi network, An unregistered terminal is a terminal that does not establish a connection with the wif i network;

The server is configured to periodically select one of the registered terminals as an information source terminal, and send a wif i access network information query request to the information source terminal; wherein, the wifi access network information query Requesting the information source terminal to search for address information of an AC that meets a preset condition,

The information source terminal returns address information of the AC that meets the preset condition to the server; the server receives and stores the address information of the wireless access point controller AC that meets the preset condition, so that the unregistered When the terminal enters the wif i network coverage area, the address information of the AC corresponding to the geographical location of the unregistered terminal is selected from the address information of the AC that meets the preset condition;

The server is further configured to detect the coverage area of the wifi network, when detecting Obtaining the address information of the AC corresponding to the geographical location of the unregistered terminal when entering the unregistered terminal of the Wi Fi network coverage area;

The server is further configured to send the address information of the AC to the unregistered terminal.

Embodiments of the present invention provide a method, device, and system for discovering a wireless access point controller. When an ANDSF server detects an unregistered terminal entering a Wi Fi network coverage area, the ANDSF server acquires the location of the unregistered terminal. Address information of the wireless access point controller AC corresponding to the location; sending the address information of the AC to the unregistered terminal. Through the solution, the AC address information is sent to the terminal, so that the connection between the terminal and the AC is established as soon as possible. Compared with the prior art, the connection time with the AC is shorter, which is beneficial to the effective management of the terminal by the AC, and avoids a large number of terminals. Squeeze the band resources while transmitting, causing interference to the wi fi network. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set forth in the claims Other drawings may also be obtained from these drawings without the inventive labor.

FIG. 1 is a flowchart of a method for discovering a wireless access point controller according to an embodiment of the present invention;

FIG. 2 is a flowchart of another method for discovering a wireless access point controller according to an embodiment of the present invention;

FIG. 3 is a structural block diagram of an ANDSF server according to an embodiment of the present invention;

4 is a block diagram of another ANDSF server according to an embodiment of the present invention; FIG. 5 is a block diagram of a terminal according to an embodiment of the present invention;

FIG. 6 is a structural block diagram of another terminal according to an embodiment of the present invention;

FIG. 7 is a structural block diagram of an acquiring unit according to an embodiment of the present invention;

FIG. 8 is a structural block diagram of another ANDSF server according to an embodiment of the present invention; FIG. 9 is a structural block diagram of another terminal according to an embodiment of the present invention;

FIG. 10 is a structural block diagram of another terminal according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a system for discovering a wireless access point controller according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without creative efforts are within the scope of the present disclosure. In the prior art, when the mobile AP accesses the wifi network, the process of discovering the AC is performed. Specifically, the mobile AP needs to request the IP address of the AC from the third-party device such as the Domain Name System (DNS), that is, the mobile AP needs to initiate the request actively. , then wait for feedback from the other party. However, if the mobile AP moves too far into and out of the wifi network, there will not be enough time to establish a connection with the AC. A large number of mobile APs that do not manage the AC will use the band resources to transmit data, which will cause interference to the wifi network.

To solve the above problem, the embodiment of the present invention provides a method for discovering a wireless access point controller. As shown in FIG. 1, the method includes:

101. The ANDSF server obtains address information of the AC corresponding to the geographical location of the unregistered terminal.

The access network discovery and selection function (ANDSF) server detects the network coverage area. When detecting the unregistered terminal entering the wifi network coverage area, the location of the unregistered terminal is obtained. AC address information. The unregistered terminal referred to in the embodiment of the present invention is a terminal that does not establish a connection with the wifi network.

Since each AC can provide services for a specific area, it is based on unregistered terminals. In the geographical location, you can get an AC that can provide services for terminals in that geographic location. The geographic location where the unregistered terminal is located is within the coverage of a certain cell of the cellular network. During the communication between the terminal and the base station of the cellular network, the base station knows the geographical location where the terminal is located. The ANDSF server is located in the core network. Therefore, the ANDSF server can know the geographical location of the terminal in the cellular network by communicating with the base station of the cellular network.

1 02. The ANDSF server sends the address information of the AC to the unregistered terminal.

After receiving the address information of the AC, the unregistered terminal may initiate a request connection operation to the AC corresponding to the address information.

An unregistered terminal entering the network coverage area, which is included in the embodiment of the present invention, includes

User equipment for AP functions. In a Wi f i network, a user equipment with an AP function is equivalent to a mobile AP, and can provide access services for other user equipments.

An embodiment of the present invention provides a method for discovering a wireless access point controller. When an ANDSF server detects an unregistered terminal that enters a network coverage area, the ANDSF server acquires an AC corresponding to a geographical location of the unregistered terminal. Address information; sending the address information of the AC to the unregistered terminal. The AC address information is actively pushed to the terminal, so that the connection between the terminal and the AC can be established as soon as possible. Compared with the prior art, the time required to establish a connection with the AC is reduced, which is beneficial to the effective management of the terminal by the AC. A large number of terminals squeeze the band resources and transmit at the same time, causing interference to the wi fi network.

Further, the embodiment of the present invention further provides a method for discovering a wireless access point controller, as shown in FIG. 2, including:

201. The ANDSF server periodically selects an information source terminal among the registered terminals and sends a wi f i access network information query request to the information source terminal.

When the information source terminal is selected, it may be randomly selected, or may be selected based on a preset rule, for example, according to the identification number of the terminal.

The registered terminal referred to in the embodiment of the present invention is a terminal that establishes a connection with the Wi fi network. In the case that the terminal establishes a connection with the wi fi network, a heartbeat communication is maintained between the two, for example, every other fixed time interval, the terminal reports the status information to the AC of the wi fi network, if the super After the preset status period has not received the report of the status information, it is determined that the registered terminal is off the wifi network.

In an actual application, a preset period may be configured in the ANDSF server, so that the ANDSF server periodically selects an information source terminal from the registered terminals in the coverage of the wifi access network saved by itself, and sends the information source terminal to the information source. The terminal sends a wifi access network information query request. The wifi access network information query request instructs the information source terminal to search for address information of an AC that meets a preset condition.

The ANDSF can send a wifi access network information query request to the information source terminal through the S14 interface.

202. The registered terminal acquires address information of the AC in the network that meets the preset condition.

After receiving the wifi access network information query request from the ANDSF server, the registered terminal starts the physical interface to scan the wi f i access network to obtain the availability information of the wifi access network. These availability information includes the address information of the AC, and may also include the load information of the AC, the SSID (Service Set Identifier), and the like.

The address information of the AC that meets the preset condition may specifically be IP address information.

The AC defined by the preset conditions described in the embodiments of the present invention should be understood as an AC capable of providing services for the terminal. For example, if the AC is not at full load or the load of the AC does not reach the upper limit of the load, the vacant load is still provided for the new terminal. Alternatively, the service type provided by the AC matches the service type of the terminal. For the convenience of description, the following uses "AC" as an alternative to "AC that meets the preconditions". The two expressions are the same.

203. Send the address information of the available AC to the ANDSF server.

Thus, the ANDSF server obtains the address information of the available AC.

204. The ANDSF server stores address information of available ACs.

Before the step 204, the ANDSF server has obtained the geographical location of the multiple information source terminals, so that after receiving the address information of the available AC, the correspondence between the geographic location of the information source terminal and the address information of the available AC can be established in the ANDSF server. . In this way, when the unregistered terminal enters the wifi network coverage, it can be selected according to the geographical location of the unregistered terminal. The appropriate AC address information is provided to the unregistered terminal.

The A N D S F server can obtain the geographical location of the information source terminal from the base station of the cellular network.

205. The ANDSF server detects whether an unregistered terminal enters a network coverage area.

When it is detected that the unregistered terminal enters the wif i network coverage area, step 206 is performed.

206. Obtain, from the stored address information of the available AC, address information of the AC corresponding to the location of the unregistered terminal.

207. Send the address information of the AC to the unregistered terminal.

208. After receiving the address information of the AC, the unregistered terminal initiates a request connection operation to the AC corresponding to the address information of the AC.

Optionally, before step 207, the unregistered terminal may send an AC address information request to the ANDSF server, and the ANDSF server sends the AC address information to the unregistered terminal according to the received AC address information request.

The ANDSF server sends the address information of the AC, which can be sent in the manner of an access policy. The access policy includes the address information of the AC, and may also include the SSID, the load information of the AC, and the like.

In addition, in another implementation manner of the present invention, the address information of the available AC mentioned above may be pre-configured in the ANDSF server.

Step 208: After the unregistered terminal initiates the request connection operation, the AC detects whether the connection is established with the unregistered terminal. If the connection is allowed to be established, the AC and the unregistered terminal continue to perform the connection establishment process; if the connection is not allowed, the Answer it.

An example of the above 201 to 208 is illustrated. There are multiple registered terminals in a wifi network coverage area, and the ANDSF server sends a wifi access network information query request to one of the registered terminals (terminal 1), and the terminal 1 scans the wifi access network to obtain the address information of the available AC. The terminal 1 transmits the address information of these available ACs to the ANDSF server. When the ANDSF detects that the unregistered terminal (terminal X) enters the wifi network coverage area, it searches for the address information of the AC corresponding to the geographic location of the terminal X according to the address information of the available AC sent by the terminal 1 (ie, the search can be the terminal X) Location of the service AC), if there is such an AC, then The address information of the AC is sent to the unregistered terminal. Then, the terminal X can initiate a connection operation to the AC corresponding to the address information of the AC, so as to establish a connection with the AC as soon as possible, and accept the management of the AC.

In addition, in another implementation manner of the present invention, the ANDSF server mentioned above sends the address information of the AC to the unregistered terminal, and specifically, the address information of the available AC is added to the data frame and transmitted to the unregistered terminal. This involves modifications to existing standard protocols. Refer specifically to Tables 1 and 2 below.

Table 1

AC3—DNS location n: CellJD = SSID = Wi-Fi5, BSSID = BS5,

Cell lDn AC1_DNS

SSID = Wi-Fi6, BSSID = BS6,

AC1_DNS

SSID = Wi-Fi7, BSSID = BS7,

AC1_DNS

Table 2

Table 1 shows the contents sent by the ANDSF server to the terminal in the existing standard protocol. These include: SSID and BSSID (Basic Service Set Identifier) information in different location ranges. For example, for location 1, the Cell.ID1 in the table is the location of the terminal in the cell of the cellular network. The SSIDs of the wif i access network existing in the location range are Wi-Fil, Wi-Fi2 and Wi-Fi3, and the corresponding BSSIDs are BS1, BS2 and BS3, respectively.

In Table 2, the existing standard protocol has been modified, and the address information of the AC is added, such as AC1_DNS, AC2-DNS in Table 2. After receiving the wifi access network information query request from the ANDSF server, the registered terminal obtains the address information of the available AC in the network, adds it to the data frame, and sends it to the ANDSF server. The ANDSF server adds the address information of the AC to the data frame and sends it to the unregistered terminal. Thus, according to the format of Table 2, the address information of the AC is added to the data frame and then transmitted.

Embodiments of the present invention provide a method for discovering a wireless access point controller, and an ANDSF server may receive address information of an available AC from an information source terminal and save it when the ANDSF server detects an unregistered terminal entering a network coverage area. And the ANDSF server acquires address information of the AC corresponding to the geographical location of the unregistered terminal; and sends the address information of the AC to the unregistered terminal. Through the solution, the AC address information is sent to the terminal, so that the connection between the terminal and the AC is established as soon as possible. Compared with the prior art, the terminal does not need to broadcast or single. The broadcast method requests the address information of the AC from other devices, such as the Doma in Name Sys tem (DNS), but the ANDSF server actively pushes the address information, which reduces the time required to establish a connection with the AC. It is beneficial to the effective management of the terminal by the AC, and avoids a large number of terminals squeezing the frequency band resources while transmitting without being controlled by the AC, and causing interference to the wi fi network.

In particular, when a terminal having a mobile AP function enters the coverage area of the Wif i in a large amount, the AC address information can be notified to each terminal as soon as possible, so that the connection between the AC and the terminal can be established, and the AC can effectively manage the mobile AP.

On the other hand, an embodiment of the present invention further provides an ANDSF server, as shown in FIG. 3, including: an obtaining unit 31 and a sending unit 32.

The obtaining unit 31 is configured to obtain address information of an AC corresponding to a geographical location of an unregistered terminal newly entering the coverage area of the wif i network. The unregistered terminal is a terminal that is not connected to the wi f i network.

The sending unit 32 is configured to send the address information of the AC acquired by the acquiring unit 31 to the unregistered terminal.

Further, the sending unit 32 is further configured to periodically select one information source terminal in the registered terminal and send a wi fi access network information query request to the information source terminal; the wi fi access network information query request Instructing the information source terminal to find address information of available ACs.

As shown in FIG. 4, the NDSF server further includes a receiving unit 33 and a storage unit 34.

The receiving unit 33 is configured to receive address information of an available AC returned by the information source terminal. The storage unit 34 is configured to store the address information of the available AC received by the receiving unit 33, so that when the unregistered terminal enters the wi fi network coverage area, the location information of the unregistered terminal is selected from the address information of the available AC. Corresponding AC address information.

Further, the acquiring unit 31 is further configured to obtain, from a base station of the cellular network, a geographic location where the information source terminal is located.

The storage unit 32 is further configured to establish a correspondence between the address information of the available AC and the geographic location of the information source terminal, and store the address information of the available AC. In addition to the address information of the available AC obtained from the information source terminal mentioned above, the address information of the available AC may also be pre-configured on the ANDSF server.

In another implementation manner of the present invention, as shown in FIG. 7, the acquiring unit 31 specifically includes:

The first obtaining subunit 311 is configured to acquire, from a base station of the cellular network, a geographical location of the unregistered terminal.

The second obtaining sub-unit 312 is configured to obtain the address information of the AC corresponding to the geographical location of the unregistered terminal according to the geographic location of the unregistered terminal obtained by the first obtaining sub-unit 311.

The ANDSF server provided by the embodiment of the present invention can receive and save the address information of the available AC from the information source terminal. When the ANDSF server detects the unregistered terminal entering the network coverage area, the ANDSF server acquires the geographical location of the unregistered terminal. Location-corresponding address information of the wireless access point controller AC; sending the address information of the AC to the unregistered terminal. The AC address information is sent to the terminal through the solution, so that the connection between the terminal and the AC is established as soon as possible. Compared with the prior art, the time required to establish a connection with the AC is reduced, which is beneficial to the effective management of the terminal by the AC, and avoids a large number of terminals. When the AC resource is not controlled by the AC, the transmission of the frequency band resources is performed at the same time, causing interference to the wifi network.

On the other hand, an embodiment of the present invention further provides a terminal. As shown in FIG. 5, the terminal includes:

The receiving unit 51 is configured to receive a wifi access network information query request sent by the ANDSF server, where the wifi access network information query request indicates to find an address information of the AC.

The obtaining unit 52 is configured to obtain, after the receiving unit 51 receives the wifi access network information query request, the address information of the available AC in the network.

The sending unit 53 is configured to send the address information of the available AC acquired by the obtaining unit 52 to the ANDSF server.

The terminal shown in FIG. 5 is a registered terminal in the wifi access network, and the terminal is selected as an information source terminal by the ANDSF server, and receives the wifi access network information query request of the ANDSF server. Returns the address information of the available AC, thus providing the available AC to the ANDSF server.

In another aspect, the embodiment of the present invention further provides another terminal, as shown in FIG. 6, including: a receiving unit 61, configured to receive address information of an AC sent by an ANDSF server.

The initiating unit 62 initiates a connection operation for the AC corresponding to the address information of the AC received by the receiving unit 61.

The terminal shown in FIG. 6 is an unregistered terminal that newly moves into the wif i access network, and the terminal has the function of a mobile AP. The terminal receives the address information of the AC sent by the ANDSF server, and initiates a connection operation to the corresponding AC, so that the connection can be established with the AC as soon as possible, and the AC is managed. Avoid a large number of terminals in the absence of AC management to squeeze the frequency band resources while transmitting, causing interference to the wifi network.

On the other hand, an embodiment of the present invention further provides an ANDSF server, as shown in FIG. 8, including:

The processor 81 is configured to obtain address information of an AC corresponding to a geographic location of an unregistered terminal that newly enters a coverage area of the wifi network;

The transmitter 82 is configured to send, to the unregistered terminal, the address information of the AC obtained by the processor 81.

The processor 81 is further configured to acquire, from the base station of the cellular network, the geographical location of the unregistered terminal, the transmitter 82 is further configured to periodically select one of the registered source terminals and send the wifi connection to the information source terminal. The access information query request; the wifi access network information query request instructs the information source terminal to find the address information of the available AC. The registered terminal is a terminal that establishes a connection with the wifi network.

The ANDSF server shown in Figure 8 also includes:

The receiver 83 is configured to receive the address information of the available AC returned by the information source terminal, and the memory 84 is configured to store the address information of the available AC received by the receiver 83, so that the unregistered terminal enters the wif i network coverage. In the area, the address information of the AC corresponding to the geographical location of the unregistered terminal is selected from the address information of the available AC.

The processor 81 is further configured to obtain, from a base station of the cellular network, a geographic location of the information source terminal. Set.

The memory 84 is specifically configured to establish a correspondence between the address information of the available AC and the geographic location of the information source terminal, and store the address information of the available AC.

The address information of the available AC may be pre-configured on the ANDSF server in addition to the address information of the available AC obtained from the information source terminal.

Corresponding to the ANDSF server shown in FIG. 8, the embodiment of the present invention further provides a terminal. As shown in FIG. 9, the terminal includes:

The receiver 91 is configured to receive a wi f i access network information query request sent by the ANDSF server, where the wi f i access network information query request indicates to find address information of the available AC.

The processor 92 is configured to obtain, after the receiver 91 receives the wi f i access network information query request, the address information of the available AC in the network.

The transmitter 93 is configured to send, to the ANDSF server, the address information of the available AC obtained by the processor 92.

The terminal shown in FIG. 9 is a registered terminal in the wi fi access network, and the terminal is selected as an information source terminal by the ANDSF server, receives the wi fi access network information query request of the ANDSF server, and returns the address information of the available AC, thereby Ability to provide address information of available ACs to the ANDSF server.

In addition, the embodiment of the present invention further provides a terminal, as shown in FIG. 10, including: a receiver 1 001, configured to receive address information of an AC sent by an ANDSF server.

The transmitter 1 002 is configured to initiate a connection operation for the AC corresponding to the address information of the AC received by the receiver.

The terminal shown in FIG. 10 is an unregistered terminal that newly moves into the wi f i access network, and the terminal has the function of a mobile AP. The terminal receives the address information of the AC sent by the ANDSF server, and initiates a connection operation to the corresponding AC, so that the connection can be established with the AC as soon as possible, and the AC is managed. It avoids a large number of terminals squeezing the band resources while transmitting in the absence of AC management, causing interference to the wi f i network.

The embodiment of the invention further provides a system for discovering a wireless access point controller, as shown in the figure 11 includes: an ANDSF server 111, a first terminal 112, and a second terminal 113. The ANDSF server 111 is an ANDSF server as shown in FIG. 8, the first terminal 112 is a terminal as shown in FIG. 9, and the second terminal 113 is a terminal as shown in FIG.

Specifically, the ANDSF server 111 periodically selects one of the registered terminals as the information source terminal, that is, the first terminal 112, and sends a wif i access network information query request to the first terminal 112; The wif i access network information query request instructs the first terminal 112 to find address information of an AC that meets a preset condition,

The first terminal 112 returns the address information of the AC that meets the preset condition to the ANDSF server 111;

The ANDSF server 111 receives and stores the address information of the wireless access point controller AC that meets the preset condition, so that when the second terminal 113 enters the wif i network coverage area, the ANDSF server 111 obtains from the compliance The address information of the AC corresponding to the geographical location of the second terminal 113 is selected from the address information of the conditional AC;

The ANDSF server 111 is further configured to detect the wif i network coverage area, and when detecting the second terminal 113 that is an unregistered terminal that enters the wifi network coverage area, acquire the location of the second terminal 113 Address information of the AC corresponding to the location;

The ANDSF server 111 is further configured to send the address information of the AC to the second terminal 113.

Embodiments of the present invention provide a system for discovering a wireless access point controller, and an ANDSF server may receive address information of an available AC from an information source terminal and save it when the ANDSF server detects an unregistered terminal entering a network coverage area. And the ANDSF server acquires address information of the wireless access point controller AC corresponding to the geographic location of the unregistered terminal; and sends the address information of the AC to the unregistered terminal. The scheme can be used to send the AC address information to the terminal, so that the connection between the terminal and the AC can be established as soon as possible. Compared with the prior art, the connection can be established with the AC, which facilitates the effective management of the terminal by the AC, and avoids the crowding of the terminal by a large number of terminals. The resource simultaneously sends a message, causing interference to the wifi network.

Especially when a terminal with a mobile AP function enters the wifi coverage in a large amount, The solution can notify the terminals of the AC address information as soon as possible, so as to facilitate the establishment of the connection between the AC and the terminal, and ensure the effective management of the mobile AP by the AC. The embodiments described above are only used to explain the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that they can still The technical solutions described in the embodiments are modified, or some of the technical features are equivalently substituted; and the modifications or substitutions do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

claims

1. A method for discovering a wireless access point controller, characterized by including: When an unregistered terminal entering the wireless fidelity Wi-Fi network coverage area is detected, the access network discovery and selection function ANDSF server obtains and The address information of the wireless access point controller AC corresponding to the geographical location of the unregistered terminal; the unregistered terminal is a terminal that has not established a connection with the wifi network;

Send the address information of the AC to the unregistered terminal.

2. The method according to claim 1, characterized in that, the access network discovery and selection function ANDSF server obtains the address information of the wireless access point controller AC corresponding to the geographical location of the unregistered terminal, Specifically include:

Obtain the geographical location of the unregistered terminal from the base station of the cellular network; obtain the address information of the AC corresponding to the geographical location of the unregistered terminal according to the geographical location of the unregistered terminal.

3. The method according to claim 1 or 2, characterized in that, before obtaining the address information of the wireless access point controller AC corresponding to the geographical location of the unregistered terminal, it further includes:

The ANDSF server periodically selects an information source terminal among the registered terminals and sends a Wi-Fi access network information query request to the information source terminal; the Wi-Fi access network information query request indicates the information source The terminal searches for the address information of the AC that meets the preset conditions; the registered terminal is a terminal that establishes a connection with the wifi network;

Receive the address information of the AC that meets the preset conditions returned by the information source terminal; store the address information of the AC that meets the preset conditions, so that when the unregistered terminal enters the Wi-Fi network coverage area, the address information of the AC that meets the preset conditions is stored in the address information. The address information of the AC corresponding to the geographical location of the unregistered terminal is selected from the address information of the conditional AC.

4. The method according to claim 3, further comprising:

Obtain the geographical location of the information source terminal from the base station of the cellular network;

The storing of the address information of the AC that meets the preset conditions specifically includes: Establish a corresponding relationship between the address information of the AC that meets the preset conditions and the geographical location of the information source terminal, and store the address information of the available AC.

5. The method according to claim 1, characterized in that the address information of the AC that meets the preset conditions is pre-configured on the ANDSF server.

6. A method for discovering a wireless access point controller, characterized by comprising: a registered terminal receiving a wireless fidelity Wi-Fi access network information query request sent by the access network discovery and selection function ANDSF server; The wifi access network information query request indicates to search for the address information of the available wireless access point controller AC; the registered terminal is a terminal that establishes a connection with the wifi network;

Obtain the address information of ACs in the network that meet the preset conditions;

Send the address information of the AC that meets the preset conditions to the ANDSF server.

7. The method according to claim 6, characterized in that the registered terminal maintains the connection with the Wi-Fi network through heartbeat communication.

8. The method according to claim 6, wherein the preset conditions include: the AC load does not reach the load upper limit, or

The service type provided by the AC matches the terminal service type.

9. An ANDSF server, characterized by including:

An acquisition unit, configured to acquire the address information of the wireless access point controller AC corresponding to the geographical location of an unregistered terminal that enters the wireless fidelity wifi network coverage area; the unregistered terminal is not connected to the wifi network Terminal to establish connection;

A sending unit, configured to send the address information of the AC obtained by the obtaining unit to the unregistered terminal.

10. The ANDSF server according to claim 9, characterized in that the acquisition unit specifically includes:

The first acquisition subunit is used to acquire the geographical location of the unregistered terminal from the base station of the cellular network;

The second acquisition subunit is used to obtain the unregistered terminal according to the first acquisition subunit. The geographical location of the terminal is located, and the address information of the AC corresponding to the geographical location of the unregistered terminal is obtained.

11. The ANDSF server according to claim 9 or 10, characterized in that the sending unit is also used to periodically select an information source terminal among registered terminals and send wifi to the information source terminal. Access network information query request; The Wi-Fi access network information query request instructs the information source terminal to search for the address information of an AC that meets preset conditions; the registered terminal is a terminal that establishes a connection with the Wi-Fi network ;

The ANDSF server also includes:

A receiving unit, configured to receive the address information of the AC that meets the preset conditions returned by the information source terminal;

A storage unit that stores the address information of ACs that meet the preset conditions received by the receiving unit, so that when the unregistered terminal enters the Wi-Fi network coverage area, it can select from the address information of the ACs that meet the preset conditions. The address information of the AC corresponding to the geographical location of the unregistered terminal.

12. The ANDSF server according to claim 11, characterized in that the acquisition unit is also used to acquire the geographical location of the information source terminal from the base station of the cellular network;

The storage unit is specifically used to establish a corresponding relationship between the address information of the AC that meets the preset conditions and the geographical location of the information source terminal, and to store the address information of the AC that meets the preset conditions.

13. The ANDSF server according to claim 9, characterized in that the address information of the AC that meets the preset conditions is pre-configured on the ANDSF server.

14. A terminal, characterized in that it includes:

A receiving unit, configured to receive a wireless fidelity Wi-Fi access network information query request sent by the access network discovery and selection function ANDSF server; the Wi-Fi access network information query request indicates to search for available wireless access access point controller A C The address information; the registered terminal is a terminal that establishes a connection with the wifi network;

Obtaining unit, configured to receive the Wi-Fi access network information query request at the receiving unit Then, obtain the address information of the AC in the network that meets the preset conditions;

A sending unit, configured to send the address information of the AC that meets the preset conditions obtained by the obtaining unit to the ANDSF server.

15. The terminal according to claim 14, characterized in that the terminal maintains the connection with the wifi network through heartbeat communication.

16. The terminal according to claim 14, wherein the preset conditions include: the AC load does not reach the load upper limit, or

The service type provided by the AC matches the terminal service type.

17. A system for discovering wireless access point controllers, characterized in that it includes: a server, an unregistered terminal and a registered terminal; the registered terminal is a terminal that establishes a connection with the wireless fidelity wifi network, the An unregistered terminal is a terminal that has not established a connection with the wifi network; the server is used to periodically select any one of the registered terminals as an information source terminal, and send a wifi access network to the information source terminal. Information query request; wherein, the wifi access network information query request instructs the information source terminal to search for the address information of the AC that meets the preset conditions,

The information source terminal returns the address information of the AC that meets the preset conditions to the server; the server receives and stores the address information of the wireless access point controller AC that meets the preset conditions so that the unregistered When the terminal enters the wifi network coverage area, select the address information of the AC corresponding to the geographical location of the unregistered terminal from the address information of the AC that meets the preset conditions;

The server is also used to detect the wifi network coverage area, and when detecting the unregistered terminal entering the wifi network coverage area, obtain the address information of the AC corresponding to the geographical location of the unregistered terminal. ;

The server is also configured to send the address information of the AC to the unregistered terminal.