CN106376042B - A kind of switching method and device of WiFi access point - Google Patents

Abstract

The invention discloses a switching method of a WiFi access point. The method includes: selecting a WiFi access point to be accessed, using the selected WiFi access point as a target WiFi access point of a terminal, and accessing the target WiFi access point. access point; lock the target WiFi access point as the terminal's WiFi access point; when the terminal meets the preset switching conditions, unlock the locked terminal's WiFi access point, and reselect the WiFi access point to be accessed. The invention also discloses a switching device of the WiFi access point. By adopting the method and device of the present invention, the terminal can normally use the network and improve user experience.

Description

A kind of switching method and device of WiFi access point

technical field

The present invention relates to the field of mobile communication, in particular to a method and device for switching a WiFi access point.

Background technique

WiFi (Wireless Fidelity, wireless fidelity) is a technology that can wirelessly connect terminals such as personal computers and handheld devices (eg, Pads, mobile phones) to a network, and is held by the WiFi Alliance (WiFi Alliance). The traditional switching method of WiFi access point (AP, Access Point) is usually, the user enters the corresponding authentication information to connect the terminal to the corresponding WiFi access point, and the terminal according to the currently received WiFi signal strength value of each WiFi access point to decide whether to perform WiFi roaming. The WiFi roaming refers to that the terminal switches from the currently accessed WiFi access point to other WiFi access points, so that the terminal can access the network through the WiFi access point, and then the user can obtain information, entertainment or move through the network. office.

The aforementioned WiFi roaming can be divided into roaming within an AC (Access Controller, access controller) and roaming between ACs. Roaming within an AC means that the WiFi access points accessed successively by the terminal during WiFi roaming are connected to the same AC. For example, a terminal connects to WiFi AP1, and WiFi AP1 connects to AC. The terminal disconnects from WiFi AP1 and roams to WiFi AP2 connected to the same AC. The process from connecting to WiFi AP1 to connecting to WiFi AP2 is as follows: Roaming within the AC. Roaming between ACs means that the WiFi access points accessed successively by the terminal during WiFi roaming are connected to different ACs. For example, a terminal connects to WiFi AP1, and WiFi AP1 connects to AC1. The terminal disconnects from WiFi AP1, roams to WiFi AP2, and WiFi AP2 connects to AC2. The process from connecting to WiFi AP1 to connecting to WiFi AP2 is as follows: Roaming between ACs. Roaming within an AC is an unaware state for the terminal and does not affect the terminal's use of the network. When inter-AC roaming occurs, if the information of the pre-roaming terminal is not synchronized in advance, the terminal may experience the process of disconnecting from the network, waiting for passive offline success, and re-login authentication, so that the terminal cannot use the network normally. .

In order to prevent the terminal from going through the process of disconnecting from the network, waiting for passive logout, and re-login authentication after the terminal roams between ACs, related technologies provide a method for pre-synchronizing the information of the pre-roaming terminal, mainly through the AC to the BRAS (Broadband Remote Access Server, broadband access server) reports pre-roaming terminal information, and realizes the synchronization of pre-roaming terminal information on the BRAS and authentication, authorization, and accounting servers, thereby allowing the terminal to use VLAN (VirtualLocal Area Network, virtual local area network) after changing IP directly accesses the network, so that the terminal does not need to go through the above-mentioned re-login authentication process, and can use the network normally. However, due to the different private protocols adopted by ACs or BRASs of different manufacturers, the AC can only report the pre-roaming terminal information to the BRAS it accesses, but cannot pre-synchronize the information to other BRASs or ACs of other brands. Therefore, when a terminal roams between ACs and the terminal roams to another BRAS or an AC of another brand manufacturer, the implementation methods provided by related technologies still have the possibility that the terminal may need to disconnect from the network, wait for the passive logout to succeed, and perform login authentication again process, so that the terminal cannot use the network normally.

To sum up, due to the traditional switching method of WiFi access points, when the terminal can access the network through the already connected WiFi access point, WiFi roaming may also occur, and because when WiFi roaming occurs on the terminal, The terminal needs to go through the process of disconnecting from the network, waiting for the passive logout to succeed, and re-login authentication, so that the terminal cannot use the network normally, which brings inconvenience to the user and reduces the user experience.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a WiFi access point switching method and device, so that the terminal can use the network normally.

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

The invention discloses a switching method of a WiFi access point, comprising:

Selecting a WiFi access point to be accessed, using the selected WiFi access point as a target WiFi access point of the terminal, and accessing the target WiFi access point;

locking the target WiFi access point as the terminal's WiFi access point;

When the terminal meets the preset switching condition, the locked WiFi access point of the terminal is released, and the WiFi access point to be accessed is reselected.

Further, the locking the target WiFi access point as the terminal's WiFi access point includes:

receiving a message sent by a WiFi access point in the environment where the terminal is located;

judging whether the sender of the message is the target WiFi access point;

When the sender of the message is not the target WiFi access point, no processing operation is performed on the message;

When the sender of the message is the target WiFi access point, perform a processing operation on the message.

Further, when the terminal meets the preset switching condition, unlocking the locked WiFi access point of the terminal, and before reselecting the WiFi access point to be accessed, the method further includes:

Monitoring whether the terminal can receive the WiFi signal of the target WiFi access point;

When the terminal fails to receive the WiFi signal, it is judged whether the duration of the terminal not being able to receive the WiFi signal exceeds a preset duration;

When the duration exceeds the preset duration, it is determined that the terminal satisfies a preset switching condition.

Further, when the terminal meets the preset switching condition, unlocking the locked WiFi access point of the terminal, and before reselecting the WiFi access point to be accessed, the method further includes:

judging whether the terminal has received an offline instruction;

When the terminal receives the offline instruction, it is determined that the terminal satisfies a preset switching condition.

Further, when the terminal meets the preset switching condition, unlocking the locked WiFi access point of the terminal, and reselecting the WiFi access point to be accessed includes:

When the terminal meets the preset switching condition, disconnecting the terminal from the target WiFi access point by sending an offline authentication request of the target WiFi access point;

receiving a message sent by a WiFi access point in the environment where the terminal is located, where the message includes a WiFi signal strength value of the WiFi access point;

The WiFi access point to be accessed is selected from each of the WiFi access points according to the WiFi signal strength value of each of the WiFi access points.

Further, the target WiFi access point includes a vehicle WiFi access point.

The invention also discloses a switching device of a WiFi access point, including:

A selection module, configured to select a WiFi access point to be accessed, use the selected WiFi access point as a target WiFi access point of the terminal, and access the target WiFi access point;

a locking module, configured to lock the target WiFi access point as the terminal's WiFi access point;

The release module is configured to release the locked WiFi access point of the terminal and reselect the WiFi access point to be accessed when the terminal meets the preset switching condition.

Further, the locking module is specifically configured to receive a message sent by a WiFi access point in the environment where the terminal is located; determine whether the sender of the message is the target WiFi access point; When the sender of the message is not the target WiFi access point, no processing operation is performed on the message; when the sender of the message is the target WiFi access point, a processing operation is performed on the message.

Further, the device also includes:

A monitoring module, configured to unlock the locked WiFi access point of the terminal when the terminal meets the preset switching conditions, and monitor whether the terminal can receive the WiFi access point before reselecting the WiFi access point to be accessed WiFi signal to said target WiFi access point;

A first judging module, configured to judge whether the duration of the terminal not being able to receive the WiFi signal exceeds a preset duration when the terminal cannot receive the WiFi signal;

The first determining module is configured to determine that the terminal satisfies a preset switching condition when the duration exceeds the preset duration.

Further, the device also includes:

The second judging module is configured to unlock the locked WiFi access point of the terminal when the terminal meets the preset switching condition, and judge whether the terminal is before reselecting the WiFi access point to be accessed A logout command is received;

The second determining module is configured to determine that the terminal satisfies a preset switching condition when the terminal receives the offline instruction.

Further, the release module is specifically configured to disconnect the terminal from the target WiFi access point by sending an offline authentication request of the target WiFi access point when the terminal satisfies a preset switching condition Connecting; receiving a message sent by a WiFi access point in the environment where the terminal is located, the message including the WiFi signal strength value of the WiFi access point; according to the WiFi signal strength value of each of the WiFi access points, Selecting the WiFi access point to be accessed from each of the WiFi access points.

Further, the target WiFi access point includes a vehicle WiFi access point.

In the WiFi access point switching method and device of the present invention, the terminal selects the WiFi access point to be accessed, uses the selected WiFi access point as the target WiFi access point of the terminal, and accesses the target WiFi access point Finally, the target WiFi access point is locked as the terminal's WiFi access point, and when the terminal meets the preset switching conditions, the locked terminal's WiFi access point is released, and the WiFi access point to be accessed is reselected to realize When the terminal can access the network through the connected WiFi access point, prevent the terminal from WiFi roaming, and when the terminal cannot or does not need to access the network through the connected WiFi access point, allow the terminal to occur WiFi roaming, thereby When the terminal can access the network through the already connected WiFi access point, it avoids the terminal going through the process of re-login authentication, and when the terminal cannot or does not need to access the network through the already connected WiFi access point, it allows the terminal to access the network from the already connected WiFi access point. The connected WiFi access point is switched to another WiFi access point, and the other WiFi access point is used to access the network, so that the terminal can use the network normally and improve the user experience.

Description of drawings

Fig. 1 is the schematic flow chart of the switching method of WiFi access point of the present invention;

Figure 2 is a schematic diagram of a scenario where inter-AC roaming may occur;

3 is a schematic structural diagram of a switching device of a WiFi access point in the present invention;

4 is a schematic flow diagram of an embodiment of a method for switching a WiFi access point according to the present invention;

1. A bus; 2. A vehicle WiFi access point; 3. Wireless base station; 4. A access controller; 5. B bus; 6. B vehicle WiFi access point; 7. B access controller ; 8. Terminal.

Detailed ways

The basic idea of the present invention is: the terminal selects the WiFi access point to be accessed, uses the selected WiFi access point as the target WiFi access point of the terminal, and accesses the target WiFi access point; the terminal uses the target WiFi access point Locked as the terminal's WiFi access point; when the terminal meets the preset switching conditions, the terminal unlocks the locked WiFi access point of the terminal, and reselects the WiFi access point to be accessed.

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

Fig. 1 shows the flow process of the switching method of WiFi access point of the present invention, as shown in Fig. 1, this method comprises:

Step 101: Select a WiFi access point to be accessed, use the selected WiFi access point as a target WiFi access point of the terminal, and access the target WiFi access point.

It should be noted that, when the WiFi switch of the terminal is not turned on, before this step 101, the method for switching the WiFi access point of the present invention further includes that the terminal turns on the WiFi of the terminal according to the WiFi turning on command input by the user.

Specifically, the implementation process of step 101 may include that the terminal receives a message sent by a WiFi access point in the environment where the terminal is located, and the message includes the SSID (Service Set Identifier, Service Set Identifier) of the WiFi access point and WiFi signal strength value; the terminal selects the WiFi access point with the largest WiFi signal strength value from each WiFi access point according to the WiFi signal strength value of each WiFi access point, and selects the WiFi access point with the largest WiFi signal strength value As the target WiFi access point; the terminal displays the SSID of the target WiFi access point; the terminal receives the password to be authenticated entered by the user according to the SSID; the terminal sends an access authentication request carrying the password to be authenticated to the authentication server; The authentication password of the target WiFi access point is used to authenticate the password to be authenticated received from the terminal. When the password to be authenticated is authenticated, the authentication pass information is sent to the terminal and the access controller of the target WiFi access point; the target WiFi The access controller of the access point obtains the identification information of the terminal and the SSID of the target WiFi access point from the authentication passing information, and selects the target WiFi access point to provide network services for the terminal with the identification information. In this way, the terminal can access the WiFi access point with the largest WiFi signal strength value in the environment where the terminal is located, that is, the target WiFi access point, so that the terminal can access the network through the target WiFi access point, so that the user can use the network Get the corresponding information.

It should be noted that, the above-mentioned implementation process may be completed through a client APP (Application, application program). For example, in an environment covered by a WiFi access point, the user can input a WiFi start command to the terminal, the terminal receives the WiFi start command, turns on the terminal's WiFi, the user inputs the start client APP command to the terminal, and the terminal receives the start client APP command to start the client APP. The client APP performs the following process: receiving the message sent by the WiFi access point in the environment where the terminal is located, the message includes the SSID and WiFi signal strength value of the WiFi access point; according to the WiFi signal strength value of each WiFi access point Strength value, select the WiFi access point with the largest WiFi signal strength value from each WiFi access point, and use the WiFi access point with the largest WiFi signal strength value as the target WiFi access point; display the target WiFi on the screen of the terminal The SSID of the access point; receiving the password to be authenticated entered by the user according to the SSID; sending an access authentication request carrying the password to be authenticated to the authentication server. The authentication server authenticates the password to be authenticated received from the terminal according to the authentication password of the target WiFi access point stored locally, and sends the password to the terminal and the access controller of the target WiFi access point when the password to be authenticated passes the authentication. Authentication passing information; the access controller of the target WiFi access point obtains the identification information of the terminal and the SSID of the target WiFi access point from the authentication passing information, and selects to provide the terminal with the identification information through the target WiFi access point. Internet service.

Step 102: Lock the target WiFi access point as the terminal's WiFi access point.

Specifically, the implementation process of this step 102 may include that the terminal receives the message sent by the WiFi access point in the environment where the terminal is located; the terminal judges whether the sender of the message is the target WiFi access point; When the target WiFi access point is selected, the terminal does not perform processing operations on the message; when the sender of the message is the target WiFi access point, the terminal performs processing operations on the message, so that between the target WiFi access point and the terminal Maintain the established locking relationship.

It should be noted that the above process may also include that the terminal receives a network information acquisition instruction input by the user; the terminal generates a corresponding network request according to the network information acquisition instruction; and the terminal sends the network request to the target WiFi access point. It should be noted that the message includes the MAC (Media Access Control, Media Access Control) address of the WiFi access point, and the terminal determines whether the sender of the message is the target WiFi access point, specifically, the terminal Determine whether the MAC address of the sender of the message is consistent with the MAC address of the target WiFi access point. The processing operation performed on the message whose sender is the target WiFi access point may specifically be that the terminal performs a parsing operation on the message to obtain feedback information of a network request sent by the terminal to the target WiFi access point. The terminal does not perform a processing operation on a message whose sender is not a target WiFi access point. Specifically, the terminal may discard a message whose sender is not a target WiFi access point; specifically, the terminal does not perform a processing operation on a message whose sender is not a target WiFi access point. The packets are parsed. In this way, the terminal cannot obtain the WiFi signal strength value of each WiFi access point from the message of each WiFi access point, and decide whether to perform WiFi roaming according to the WiFi signal strength value of each WiFi access point; When the connected WiFi access point accesses the network, it prevents the terminal from experiencing WiFi roaming, that is, when the terminal can access the network through the connected WiFi access point, it prevents the terminal from going through the process of re-login authentication.

Step 103: When the terminal meets the preset switching condition, unlock the WiFi access point of the locked terminal, and reselect the WiFi access point to be accessed.

It should be noted that, before this step 103, the WiFi access point switching method of the present invention also includes: the terminal monitors whether the terminal itself can receive the WiFi signal of the target WiFi access point; when the terminal cannot receive the WiFi signal, the terminal Judging whether the duration of the terminal not being able to receive the WiFi signal exceeds the preset duration; when the duration exceeds the preset duration, the terminal judges whether the preset switching condition is met. It should be noted that the terminal may set the preset duration according to the duration value input by the user; the terminal may also set the preset duration according to the duration value provided by the system of the terminal. The user can set the duration value according to the actual usage. For example, in actual use, after the terminal accesses the target WiFi access point, if the terminal cannot receive this time and the WiFi signal state of the target WiFi access point lasts longer than 3 minutes, usually the terminal has left within the coverage of the target WiFi access point; in this actual use case, the user can set the above duration value to 3 minutes. In this way, the terminal can automatically detect whether the WiFi access point connected to the terminal is available.

It should be noted that before this step 103, the WiFi access point switching method of the present invention also includes: the terminal judges whether an offline command is received; when the terminal receives the offline command, the terminal determines that the terminal meets the preset switching conditions. In this way, it can be realized that the terminal can determine whether the user desires to use the accessed WiFi access point.

Of course, in some usage scenarios, the way for the terminal to determine whether the preset switching conditions are met can also be other ways, for example, the terminal monitors whether the WiFi signal strength value of the target WiFi access point is less than the preset threshold, and the target WiFi access point When the WiFi signal strength value is less than the preset threshold, the terminal determines that the terminal meets the preset handover condition. It should be noted that the terminal may set the preset threshold according to the threshold input by the user; the terminal may also set the preset threshold according to the threshold provided by the system of the terminal. The specific value of the preset threshold can be set according to user requirements. For example, when a terminal accesses the network through a target WiFi access point, usually when the WiFi signal strength value of the target WiFi access point is less than minus 90 dBmV, the network speed of the terminal will become very slow, and users do not expect Also continue to access the network through the target WiFi access point, in which case the preset threshold can be set to 90 dBm.

Specifically, this step 103 can be implemented in the following three ways. The first way includes: when the terminal determines that the duration of the terminal without WiFi signal state exceeds the preset duration, the terminal unlocks the WiFi access point of the terminal that has been locked, Re-select the WiFi access point to be connected. In this way, it can be realized that when the terminal cannot access the network through the connected WiFi access point, WiFi roaming of the terminal is allowed, that is, when the terminal cannot access the network through the connected WiFi access point, the terminal can be accessed from The connected WiFi access point switches to another WiFi access point, and accesses the network through the other WiFi access point, thereby automatically releasing the locking relationship between the terminal and the connected WiFi access point. For example, when the user's terminal leaves the coverage of the accessed WiFi access point, the terminal can release the locking relationship between the terminal and the accessed WiFi access point, so as to reselect the WiFi access point to be accessed. In this way, when the user's terminal moves from the coverage of the accessed WiFi access point to the coverage of other WiFi access points, it can re-connect to other WiFi access points.

The second method includes: when the terminal determines that the logout instruction input by the user is received, the terminal unlocks the WiFi access point of the terminal that has been locked, and reselects the WiFi access point to be accessed. In this way, it can be realized that when the terminal does not need to access the network through the already connected WiFi access point, WiFi roaming of the terminal is allowed, that is, when the terminal does not need to access the network through the already connected WiFi access point, the terminal You can switch from the connected WiFi access point to other WiFi access points, and access the network through other WiFi access points. Therefore, the locked relationship between the accessed WiFi access point and the terminal is released according to the user's expectation, and the user experience is improved.

Method 3 may include: when the terminal determines that the preset switching condition is satisfied, the terminal disconnects the terminal from the target WiFi access point by sending an offline authentication request of the target WiFi access point, thereby unlocking the locked terminal's WiFi access point. access point; the terminal receives the message sent by the WiFi access point in the environment where the terminal is located, and the message includes the WiFi signal strength value of the WiFi access point; Select the WiFi access point to be connected in the access point. In this way, the terminal can allow WiFi roaming of the terminal when the terminal cannot or does not need to use the connected WiFi access point, that is, when the terminal cannot or does not need to use the connected WiFi access point, the terminal can be disconnected. Open the connected WiFi access point, switch the terminal's WiFi access point from the connected WiFi access point to other WiFi access points, and access the network through other WiFi access points.

It should be noted that the terminal unlocks the locked WiFi access point of the terminal through the following method. After the terminal receives the message sent by the WiFi access point in the environment where the terminal is located, the terminal performs processing on each message Operation, no longer perform the following steps: determine whether the sender of the message is the target WiFi access point; when the sender of the message is not the target WiFi access point, the terminal does not perform processing operations on the message; When the party is the target WiFi access point, the packet is processed. Thus, the locked relationship maintained between the target WiFi access point and the terminal is released.

It should be noted that, in step 103, the reselection of the WiFi access point to be accessed may be implemented by the terminal returning to execute step 101 again.

It should be noted that the target WiFi access point may be a vehicle WiFi access point. The vehicle-mounted WiFi access device refers to a wireless router mounted on the vehicle that provides WiFi hotspots, and can convert 3G/4G signals into WiFi signals. Because in some usage scenarios, the terminal may go through the process of re-login authentication when WiFi roaming occurs on the terminal, so the user does not expect that when the terminal can use the connected WiFi access point to access the network, the terminal WiFi roaming. For example, when a user takes a bus, the bus is equipped with a vehicle-mounted WiFi access device, and the user's terminal is connected to the network through the vehicle-mounted WiFi access device, so that the user can use the network to obtain information; since the user's terminal and the bus are in the Relative to the static state, the terminal can usually access the network through the on-board WiFi access device. Therefore, the user expects that the terminal is only connected to the on-board WiFi access device of the bus during the bus ride, and no WiFi roaming occurs. However, when multiple buses are overtaking and merging and entering and leaving the station, there may be multiple on-board WiFi access devices connected to different ACs in similar positions. In this case, the terminal may roam between ACs.

As shown in Figure 2, this figure shows a schematic diagram of a scenario where roaming between ACs may occur. Bus A 1 is equipped with a vehicle-mounted WiFi access device 2, and the vehicle-mounted WiFi access device 2 is connected to A through a wireless base station 3. Controller 4 is connected, B bus 5 is equipped with B vehicle WiFi access device 6, B vehicle WiFi access device 6 is connected to B access controller 7 through wireless base station 3, user's terminal 8 has been connected through A vehicle WiFi Device 2 is connected to the network. In this case, although the WiFi signal strength value of A’s vehicle-mounted WiFi access device 2 can support terminal 8 to access the Internet, the signal strength value of B’s vehicle-mounted WiFi access device 6 may be greater than the signal strength of A’s vehicle-mounted WiFi access device 2 value, the user's terminal 8 may roam from the vehicle-mounted WiFi access device 2 of A to the vehicle-mounted WiFi access device 6 of B, and roaming between ACs occurs. If the terminal goes through the process of re-login authentication, it will make the terminal unable to use the network normally when it can access the network through the connected WiFi access device. In this scenario, the above method can be used to realize that the terminal can use the network normally.

Of course, in other usage scenarios, such as indoors, because there are multiple WiFi access devices in the environment where the terminal is located, WiFi roaming may occur on the terminal at the intersection covered by the WiFi access devices. At this time, the terminal may go through the process of re-login authentication, so the user does not expect that the terminal will experience WiFi roaming when the terminal can use the connected WiFi access point to access the network. In this scenario, the above method can be used to realize that the terminal can use the network normally. Therefore, the target WiFi access point may also be an indoor WiFi access point. The indoor WiFi access device refers to a wireless router installed indoors that provides WiFi hotspots.

In order to realize the above method, the present invention discloses a switching device of a WiFi access point.

Fig. 3 shows a schematic structural diagram of the switching device of the WiFi access point of the present invention, as shown in Fig. 3, the switching device of the WiFi access point includes:

A selection module 301, configured to select a WiFi access point to be accessed, use the selected WiFi access point as a target WiFi access point of the terminal, and access the target WiFi access point;

A locking module 302, configured to lock the target WiFi access point as the terminal's WiFi access point;

The unlocking module 303 is configured to unlock the locked WiFi access point of the terminal and reselect the WiFi access point to be accessed when the terminal meets the preset switching condition.

Further, the locking module is specifically configured to receive a message sent by a WiFi access point in the environment where the terminal is located; determine whether the sender of the message is the target WiFi access point; When the sender of the message is not the target WiFi access point, no processing operation is performed on the message; when the sender of the message is the target WiFi access point, a processing operation is performed on the message.

Further, the device also includes:

A monitoring module, configured to unlock the locked WiFi access point of the terminal when the terminal meets the preset switching conditions, and monitor whether the terminal can receive the WiFi access point before reselecting the WiFi access point to be accessed WiFi signal to said target WiFi access point;

A first judging module, configured to judge whether the duration of the terminal not being able to receive the WiFi signal exceeds a preset duration when the terminal cannot receive the WiFi signal;

The first determining module is configured to determine that the terminal satisfies a preset switching condition when the duration exceeds the preset duration.

Further, the device also includes:

The second judging module is configured to unlock the locked WiFi access point of the terminal when the terminal meets the preset switching condition, and judge whether the terminal is before reselecting the WiFi access point to be accessed A logout command is received;

The second determining module is configured to determine that the terminal satisfies a preset switching condition when the terminal receives the offline instruction.

Further, the release module is specifically configured to disconnect the terminal from the target WiFi access point by sending an offline authentication request of the target WiFi access point when the terminal satisfies a preset switching condition Connecting; receiving a message sent by a WiFi access point in the environment where the terminal is located, the message including the WiFi signal strength value of the WiFi access point; according to the WiFi signal strength value of each of the WiFi access points, Selecting the WiFi access point to be accessed from each of the WiFi access points.

Further, the target WiFi access point may be a vehicle WiFi access point.

The selection module, the locking module and the releasing module in the switching device of the WiFi access point provided by the present invention, and the monitoring module, the first judging module, the first determining module, the second judging module and the second determining module further included can all be Realized by a processor in the terminal; of course, it can also be realized by a specific logic circuit; in the process of a specific embodiment, the processor can be a central processing unit (CPU), a microprocessor (MPU), a digital signal processor ( DSP) or Field Programmable Gate Array (FPGA), etc.

The flow of an embodiment of the WiFi access point switching method of the present invention is shown below.

Fig. 4 is a schematic flow diagram of an embodiment of a switching method of a WiFi access point according to the present invention. As shown in Fig. 4, the method includes:

Step 401: Turn on the WiFi of the terminal, and start the vehicle WiFi client.

Specifically, in an environment covered by a vehicle-mounted WiFi access point, the user may input a WiFi activation command to the terminal, the terminal receives the activation command, and enables the terminal's WiFi, the user inputs a vehicle-mounted WiFi client activation command to the terminal, and the terminal receives the activation command , start the car WiFi client.

Step 402: The vehicle-mounted WiFi client automatically searches for vehicle-mounted WiFi access points in the environment where the terminal is located, and selects a target vehicle-mounted WiFi access point.

Specifically, the vehicle-mounted WiFi access point broadcasts the SSID signal and sends a corresponding message; the vehicle-mounted WiFi client searches for the SSID signal and receives the message sent by the vehicle-mounted WiFi access point in the environment where the terminal is located, and the message includes the vehicle-mounted WiFi access point. The SSID and WiFi signal strength value of the entry point; the WiFi signal strength value of the vehicle WiFi access point received by the vehicle WiFi client; the vehicle WiFi access point with the maximum WiFi signal strength value as the target vehicle WiFi access point.

Step 403: The vehicle-mounted WiFi client receives the password to be authenticated input by the user according to the SSID of the target WiFi access point, and sends an access authentication request carrying the password to be authenticated to the authentication server.

Specifically, after the vehicle-mounted WiFi client selects the target vehicle-mounted WiFi access point, the SSID of the target WiFi access point is displayed on the terminal screen; The WiFi client receives the password to be authenticated inputted by the user according to the SSID; the vehicle-mounted WiFi client receives the password to be authenticated, and sends an access authentication request carrying the password to be authenticated to the authentication server.

Step 404: The vehicle-mounted WiFi client receives the authentication passing information fed back by the authentication server.

Step 405: the vehicle-mounted WiFi client locks the terminal's WiFi access point as a target vehicle-mounted WiFi access point.

Specifically, the vehicle-mounted WiFi client receives the message sent by the vehicle-mounted WiFi access point in the environment where the terminal is located; the vehicle-mounted WiFi client judges whether the sender of the message is the target vehicle WiFi access point; When the WiFi access point is used, the vehicle WiFi client does not perform processing operations on the message; when the sender of the message is the target WiFi access point, the vehicle WiFi client performs processing operations on the message, so that the target WiFi access The established lock relationship is maintained between the peer and the terminal. It should be noted that the message includes the MAC address of the WiFi access point, and the terminal determines whether the sender of the message is the target WiFi access point, specifically, the terminal determines the MAC address of the sender of the message Whether it is consistent with the MAC address of the target WiFi access point.

Step 406: The vehicle-mounted WiFi client judges whether the terminal meets the preset switching conditions, and sends an offline authentication request to the authentication server when the terminal meets the preset switching conditions.

Specifically, the vehicle-mounted WiFi client monitors whether the terminal can receive the WiFi signal of the target WiFi access point; when the terminal cannot receive the WiFi signal, the vehicle-mounted WiFi client judges the duration of the terminal not receiving the WiFi signal. Whether it exceeds the preset duration; when the duration exceeds the preset duration, the vehicle-mounted WiFi client judges whether the terminal meets the preset switching condition. The preset duration may be three minutes. The on-vehicle WiFi client determines whether the terminal has received an offline command; when the terminal receives the off-line command, the on-vehicle WiFi client determines that the terminal meets a preset switching condition. When the terminal meets the preset switching conditions, the vehicle-mounted WiFi client sends an offline authentication request to the authentication server.

Step 407: The vehicle-mounted WiFi client receives the offline authentication passing information sent by the authentication server.

Step 408: The vehicle-mounted WiFi client unlocks the WiFi access point of the locked terminal.

Specifically, the on-vehicle WiFi client releases the locked terminal's WiFi access point through the following method. After the on-vehicle WiFi client receives the message sent by the WiFi access point in the environment where the terminal is located, it The vehicle WiFi client does not perform the following steps anymore: determine whether the sender of the message is the target WiFi access point; when the sender of the message is not the target WiFi access point, do not perform processing operations on the message ; When the sender of the message is the target WiFi access point, perform a processing operation on the message. Thus, the locked relationship maintained between the target WiFi access point and the terminal is released.

Step 409: The vehicle-mounted WiFi client reselects a WiFi access point to be connected.

Specifically, the reselection of the WiFi access point to be accessed can be realized by returning to step 402 by the vehicle WiFi client. For example, when the user's terminal leaves the coverage of the target vehicle-mounted WiFi access point, the vehicle-mounted WiFi client can release the locked relationship between the terminal and the target vehicle-mounted WiFi access point. When the coverage of the access point moves to the coverage of other vehicular WiFi access points, the vehicular WiFi client can repeatedly perform step 402 to enable the terminal to access the network through other vehicular WiFi access points.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes, and the scope of protection of the present invention is based on the claims.

Claims (8)

1. A switching method of a WiFi access point, characterized in that, comprising: Selecting a WiFi access point to be accessed, using the selected WiFi access point as a target WiFi access point of the terminal, and accessing the target WiFi access point; locking the target WiFi access point as the terminal's WiFi access point; When the terminal meets the preset switching condition, unlocking the locked WiFi access point of the terminal, and reselecting the WiFi access point to be accessed; Wherein, the locking the target WiFi access point as the WiFi access point of the terminal includes: receiving a message sent by a WiFi access point in the environment where the terminal is located; judging whether the sender of the message is the target WiFi access point; When the sender of the message is not the target WiFi access point, no processing operation is performed on the message; When the sender of the message is the target WiFi access point, perform a processing operation on the message; The unlocking the locked WiFi access point of the terminal when the terminal meets the preset switching condition, and reselecting the WiFi access point to be accessed includes: When the terminal meets the preset switching condition, disconnecting the terminal from the target WiFi access point by sending an offline authentication request of the target WiFi access point; receiving a message sent by a WiFi access point in the environment where the terminal is located, where the message includes a WiFi signal strength value of the WiFi access point; The WiFi access point to be accessed is selected from each of the WiFi access points according to the WiFi signal strength value of each of the WiFi access points. 2. The method according to claim 1, wherein when the terminal meets the preset switching condition, unlocking the locked WiFi access point of the terminal, and reselecting the WiFi access point to be accessed Before the access point, the method also includes: Monitoring whether the terminal can receive the WiFi signal of the target WiFi access point; When the terminal fails to receive the WiFi signal, it is judged whether the duration of the terminal not being able to receive the WiFi signal exceeds a preset duration; When the duration exceeds the preset duration, it is determined that the terminal satisfies a preset switching condition. 3. The method according to claim 1, wherein when the terminal meets the preset switching condition, unlocking the locked WiFi access point of the terminal, and reselecting the WiFi access point to be accessed Before the access point, the method also includes: judging whether the terminal has received an offline instruction; When the terminal receives the offline instruction, it is determined that the terminal satisfies a preset switching condition. 4. The method according to claim 1, wherein the target WiFi access point comprises a vehicle WiFi access point. 5. A switching device of a WiFi access point, comprising: A selection module, configured to select a WiFi access point to be accessed, use the selected WiFi access point as a target WiFi access point of the terminal, and access the target WiFi access point; a locking module, configured to lock the target WiFi access point as the terminal's WiFi access point; A release module, configured to release the locked WiFi access point of the terminal when the terminal meets the preset switching condition, and reselect the WiFi access point to be accessed; Wherein, the locking module is specifically configured to receive a message sent by a WiFi access point in the environment where the terminal is located; determine whether the sender of the message is the target WiFi access point; When the sender of the message is not the target WiFi access point, the processing operation is not performed on the message; when the sender of the message is the target WiFi access point, the processing operation is performed on the message; The release module is specifically configured to disconnect the terminal from the target WiFi access point by sending an offline authentication request of the target WiFi access point when the terminal meets a preset switching condition; receiving the message sent by the WiFi access point in the environment where the terminal is located, the message including the WiFi signal strength value of the WiFi access point; according to the WiFi signal strength value of each of the WiFi access points, from each Select the WiFi access point to be accessed from the WiFi access points. 6. The device according to claim 5, further comprising: A monitoring module, configured to unlock the locked WiFi access point of the terminal when the terminal meets the preset switching conditions, and monitor whether the terminal can receive the WiFi access point before reselecting the WiFi access point to be accessed WiFi signal to said target WiFi access point; A first judging module, configured to judge whether the duration of the terminal not being able to receive the WiFi signal exceeds a preset duration when the terminal cannot receive the WiFi signal; The first determining module is configured to determine that the terminal satisfies a preset switching condition when the duration exceeds the preset duration. 7. The device according to claim 5, further comprising: The second judging module is configured to unlock the locked WiFi access point of the terminal when the terminal meets the preset switching condition, and judge whether the terminal is before reselecting the WiFi access point to be accessed A logout command is received; The second determining module is configured to determine that the terminal satisfies a preset switching condition when the terminal receives the offline instruction. 8. The device according to claim 5, wherein the target WiFi access point comprises a vehicle WiFi access point.