CN106604314B - WiFi roaming network access method and terminal equipment - Google Patents

Abstract

The embodiment of the invention relates to the technical field of communication, and discloses a WiFi roaming network access method and terminal equipment. In the embodiment of the invention, whether terminal equipment has roaming access to a first wireless access node (AP) is monitored; if the terminal equipment is roamed and accessed to the first AP, testing whether the terminal equipment can access the network after being accessed to the first AP; and if the terminal equipment cannot access the network after accessing the first AP, adding the first AP into a blacklist to prohibit the terminal equipment from accessing the first AP. By implementing the embodiment of the invention, the terminal equipment can avoid the access signal strong but the AP which can not be networked when roaming, thereby ensuring the continuity of the roaming network service.

Description

WiFi roaming network access method and terminal device

technical field

The present invention relates to the field of communication technologies, and in particular, to a network access method and terminal equipment for WiFi roaming.

Background technique

With the development of communication technologies, WiFi (Wireless Fidelity, wireless fidelity) networks have been widely popularized, and people can connect terminal devices to the WiFi network anytime and anywhere to access the Internet.

The WiFi standard is a wireless technical specification formulated by IEEE. Its architecture includes: STA (Station, wireless station), BSS (Basic Service Set, basic service set), DS (Distribution System, distributed system) and ESS (Extended Service Set, Extended Service Group). The terminal device used by the user to access the WiFi network acts as a STA. In a BSS, an AP (Access Point, wireless access node) not only provides a bridging function for communication between STAs, but also provides a connection between the STA and the wired local area network, so as to realize the communication between the STA and the STA outside the network established by the AP. And multiple BSSs are connected to each other to form an Extended Service Group (ESS). The ESS supports the roaming function. STAs can roam between different BSSs in the ESS, and can achieve seamless connection, that is, without interrupting ongoing network services, and Do not change the IP address of the STA.

The terminal device will automatically select the AP with the best signal quality from the ESS for access. However, if the first AP has a normal signal but can access the Internet, but the second AP has a strong signal but cannot access the Internet, the terminal device roams from the first AP to The second AP needs to be manually switched to re-connect to the network, otherwise it will not be able to access the Internet normally.

SUMMARY OF THE INVENTION

The embodiments of the present invention provide a network access method and terminal device for WiFi roaming. When the terminal device roams, it can avoid accessing an AP with strong signal but unable to connect to the Internet, thereby ensuring the continuity of roaming network services.

A first aspect of the embodiments of the present invention discloses a network access method for WiFi roaming, including:

Monitoring whether the terminal device roams to access the first wireless access node AP;

If the terminal device roams to access the first AP, test whether the terminal device can access the network after accessing the first AP;

If the terminal device cannot access the network after accessing the first AP, the first AP is added to a blacklist to prohibit the terminal device from accessing the first AP.

As an optional implementation manner, after adding the first AP to a blacklist to prohibit the terminal device from accessing the first AP, the method further includes:

Obtain the signal strengths of other APs except the first AP from the extended service group ESS;

A second AP with the strongest signal strength in the ESS except the first AP is selected for access.

As an optional implementation manner, after adding the first AP to a blacklist to prohibit the terminal device from accessing the first AP, the method further includes:

Counting the time when the first AP was added to the blacklist;

If the time when the first AP is added to the blacklist exceeds a preset time threshold, the first AP is deleted from the blacklist.

As an optional implementation manner, the testing whether the terminal device can access the network after accessing the first AP includes:

sending a test data frame to a wireless station STA outside the network established by the first AP, so that the STA returns a response frame;

If the terminal device receives the response frame, it is determined that the terminal device can access the network after accessing the first AP; if the terminal device does not receive the response frame, it is determined to access the first AP. After an AP, the terminal device cannot access the network.

As an optional implementation manner, if the terminal device can access the network after accessing the first AP, the method further includes:

monitoring the data transmission speed of accessing the network through the first AP;

If the data transmission speed is lower than a preset threshold, broadcast a request message to other APs in the ESS except the first AP, so that the other APs return the number of STAs connected to the other APs;

A third AP with the least number of STAs connected to the other APs is selected for access.

As an optional implementation manner, if the terminal device can access the network after accessing the first AP, the method further includes:

monitoring the data transmission speed of accessing the network through the first AP;

If the data transmission speed is lower than the preset threshold, acquiring the channel information of the first AP;

According to the channel information of the first AP, a fourth AP in the ESS with a channel different from that of the first AP is selected for access.

A second aspect of the embodiments of the present invention discloses a network access device for WiFi roaming, including:

a first monitoring unit, configured to monitor whether the terminal device roams to access the first wireless access node AP;

a testing unit, configured to test whether the terminal device can access the network after accessing the first AP if the terminal device roams to access the first AP;

The adding unit is configured to add the first AP to a blacklist if the terminal device cannot access the network after accessing the first AP, so as to prohibit the terminal device from accessing the first AP.

As an optional implementation manner, the device further includes:

a first obtaining unit, configured to obtain the signal strengths of other APs except the first AP from the extended service group ESS;

A first selection unit, configured to select a second AP with the strongest signal strength other than the first AP in the ESS for access.

As an optional implementation manner, the device further includes:

a statistical unit, configured to count the time when the first AP is added to the blacklist;

A deletion unit, configured to delete the first AP from the blacklist if the time for adding the first AP to the blacklist exceeds a preset time threshold.

As an optional implementation manner, the test unit includes:

a sending subunit, configured to send a test data frame to a wireless station STA outside the network established by the first AP, so that the STA returns a response frame;

The determining subunit is configured to determine that the terminal device can access the network after accessing the first AP if the terminal device receives the response frame, and determines that the terminal device can access the network if the terminal device does not receive the response frame. After entering the first AP, the terminal device cannot access the network.

As an optional implementation manner, the device further includes:

a second monitoring unit, configured to monitor the data transmission speed of accessing the network through the first AP if the terminal device can access the network after accessing the first AP;

A broadcasting unit, configured to broadcast a request message to other APs in the ESS except the first AP if the data transmission speed is lower than a preset threshold, so that the other APs return to the STAs connected to the other APs quantity;

The second selection unit is configured to select a third AP with the smallest number of STAs connected to the other APs for access.

As an optional implementation manner, the device further includes:

a third monitoring unit, configured to monitor the data transmission speed of accessing the network through the first AP if the terminal device can access the network after accessing the first AP;

a second acquiring unit, configured to acquire channel information of the first AP if the data transmission speed is lower than the preset threshold;

A third selection unit, configured to select, according to the channel information of the first AP, a fourth AP in the ESS with a channel different from that of the first AP for access.

A third aspect of the embodiments of the present invention discloses a terminal device, including:

a memory in which executable program code is stored;

a processor coupled to the memory;

The processor invokes the executable program code stored in the memory to execute the method described in the first aspect.

As can be seen from the above technical solutions, the embodiments of the present invention have the following advantages:

In this embodiment of the present invention, it is monitored whether the terminal device roams to access the first wireless access node AP; if the terminal device roams and accesses the first AP, the terminal device is tested after accessing the first AP. Whether the network can be accessed; if the terminal device cannot access the network after accessing the first AP, the first AP is added to the blacklist to prohibit the terminal device from accessing the first AP. By implementing the embodiments of the present invention, the terminal device can avoid accessing an AP with strong signal but unable to connect to the network when roaming, thereby ensuring the continuity of the roaming network service.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic flowchart of a network access method for WiFi roaming disclosed in an embodiment of the present invention;

2 is a schematic structural diagram of a terminal device roaming in an extended service group ESS disclosed in an embodiment of the present invention;

3 is a schematic flowchart of another network access method for WiFi roaming disclosed in an embodiment of the present invention;

4 is a schematic structural diagram of a network access device for WiFi roaming disclosed in an embodiment of the present invention;

5 is a schematic structural diagram of another network access device for WiFi roaming disclosed in an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a terminal device 600 disclosed in an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. . Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods or devices.

The embodiments of the present invention provide a network access method and terminal device for WiFi roaming. When the terminal device roams, it can avoid accessing an AP with strong signal but unable to connect to the Internet, thereby ensuring the continuity of roaming network services. Each of them will be described in detail below.

Please refer to FIG. 1. FIG. 1 is a schematic flowchart of a network access method for WiFi roaming disclosed in an embodiment of the present invention. Wherein, the network access method for WiFi roaming shown in FIG. 1 may include the following steps:

101. Monitor whether the terminal device roams to access the first wireless access node AP.

In the embodiment of the present invention, the terminal device may be a smart phone, a smart watch, a handheld computer, a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA), a point of sale (Point of Sales, POS), etc. repeat.

FIG. 2 is a schematic structural diagram of a terminal device roaming in an ESS according to an embodiment of the present invention. A BSS usually consists of an AP and multiple STAs that access the network through the AP. The AP not only provides the bridging function for communication between STAs, but also provides the connection between the STA and the wired local area network, so as to realize the connection outside the network established by the STA and the AP. STA communication. Multiple BSSs are connected to each other to form an ESS. The ESS supports the roaming function, and the STA can roam between different BSSs in the ESS, and can realize seamless connection. As shown in Figure 2, the ESS in the figure is composed of BSS1 and BSS2. When the terminal device held by the user enters the area covered by BSS2, the terminal device can roam from AP1 to access AP2 in BSS2. During this period, its ongoing Network service will not be interrupted.

In the embodiment of the present invention, when the terminal device held by the user receives the network signal of the first AP in the ESS, it determines that the network signal of the first AP is stronger than the currently accessed AP, and then roams to access the first AP.

102. If the terminal device roams to access the first AP, test whether the terminal device can access the network after accessing the first AP.

After the terminal device roams to the first AP, although the signal strength of the first AP is stronger than that of the previously accessed AP, the terminal device may not be able to access the wired LAN through the AP due to system settings and other reasons. Therefore, after the terminal device monitors that it roams and accesses the first AP, it needs to test whether the terminal device can access the network after accessing the first AP.

As an optional implementation manner, the terminal device sends a test data frame to a STA outside the network established by the first AP, so that the STA returns a response frame; if the terminal device receives the response frame returned by the STA, it determines the access After the first AP, the terminal device can access the network; if the terminal device does not receive the above-mentioned response frame, it is determined that the terminal device cannot access the network after accessing the first AP.

103. If the terminal device cannot access the network after accessing the first AP, add the first AP to a blacklist to prohibit the terminal device from accessing the first AP.

In this embodiment of the present invention, if the terminal device cannot access the network after accessing the first AP, the first AP is added to the blacklist to prohibit the terminal device from accessing the first AP and prevent the terminal device from accessing the first AP again in subsequent roaming. An AP cannot access the network normally.

In addition, when the number of STAs connected to the same AP is too large, the throughput of the AP exceeds the normal processing range, and the packet loss rate of the AP will increase significantly, resulting in a decrease in the data transmission speed. In response to such a situation, the terminal device can choose to access the AP with a small number of STAs for access in the following ways:

If the terminal device can access the network after accessing the first AP, the terminal device monitors the data transmission speed of accessing the network through the first AP; if the above-mentioned data transmission speed is lower than the preset threshold, it will send the data to other APs in the ESS except the first AP. Broadcast the request message, so that other APs return the number of STAs connected to other APs; then select the third AP with the smallest number of STAs connected to other APs for access.

In addition, when multiple APs that are close to each other use the same channel for data transmission, they will interfere with each other and reduce the data transmission speed. In response to such a situation, the terminal device can select APs of other channels for access in the following ways:

If the terminal device can access the network after accessing the first AP, the terminal device monitors the data transmission speed of accessing the network through the first AP; if the data transmission speed is lower than the preset threshold, obtain the channel information of the first AP; according to the first AP channel information, select a fourth AP in the ESS that is different from the channel of the first AP for access.

It can be seen that using the network access method for WiFi roaming described in FIG. 1 , the terminal device can avoid accessing APs with strong signals but unable to connect to the Internet during roaming, thereby ensuring the continuity of roaming network services.

Please refer to FIG. 3 , which is a schematic flowchart of another network access method for WiFi roaming disclosed by an embodiment of the present invention. As shown in Figure 3, the method may include the following steps:

301. Monitor whether the terminal device roams to access the first wireless access node AP.

After the terminal device roams to the first AP, although the signal strength of the first AP is stronger than that of the previously accessed AP, the terminal device may not be able to access the wired LAN through the AP due to system settings and other reasons. Therefore, after the terminal device monitors that it roams and accesses the first AP, it needs to test whether the terminal device can access the network after accessing the first AP.

302. If the terminal device roams to access the first AP, test whether the terminal device can access the network after accessing the first AP.

As an optional implementation manner, the terminal device sends a test data frame to a STA outside the network established by the first AP, so that the STA returns a response frame; if the terminal device receives the response frame returned by the STA, it determines the access After the first AP, the terminal device can access the network; if the terminal device does not receive the above-mentioned response frame, it is determined that the terminal device cannot access the network after accessing the first AP.

303. If the terminal device cannot access the network after accessing the first AP, add the first AP to a blacklist to prohibit the terminal device from accessing the first AP.

304. Acquire the signal strengths of other APs except the first AP from the extended service group ESS.

305. Select a second AP with the strongest signal strength other than the first AP in the foregoing ESS for access.

After the terminal device determines that it cannot access the network after accessing the first AP, the terminal device obtains the signal strengths of other APs except the first AP from the ESS, and selects the second AP with the strongest signal strength for access, so as to achieve The need to access the network.

In addition, when the number of STAs connected to the same AP is too large, the throughput of the AP exceeds the normal processing range, and the packet loss rate of the AP will increase significantly, resulting in a decrease in the data transmission speed. In response to such a situation, the terminal device can choose to access the AP with a small number of STAs for access in the following ways:

If the terminal device can access the network after accessing the second AP, the terminal device monitors the data transmission speed of accessing the network through the second AP; if the data transmission speed is lower than the preset threshold, the terminal device will send the data to other APs in the ESS except the second AP. Broadcast the request message, so that other APs return the number of STAs connected to other APs; then select the third AP with the smallest number of STAs connected to other APs for access.

306. Count the time when the first AP is added to the blacklist.

307. If the time for adding the first AP to the blacklist exceeds a preset time threshold, delete the first AP from the blacklist.

In this embodiment of the present invention, the terminal device counts the time when the first AP is added to the blacklist, and if the time exceeds a preset time threshold (for example, the time threshold is set to 24 hours), the first AP is deleted from the blacklist ; During subsequent roaming, the terminal device can try to access the first AP again, so as to avoid the failed access caused by the temporary network failure, which affects the terminal device's access to the network through the first AP after the first AP is repaired.

It can be seen that using the network access method for WiFi roaming described in FIG. 3 , the terminal device can avoid accessing APs with strong signals but unable to connect to the Internet when roaming, thereby ensuring the continuity of roaming network services.

Please refer to FIG. 4 , which is a schematic structural diagram of a network access device for WiFi roaming disclosed in an embodiment of the present invention. As shown in Figure 4, the apparatus may include:

The first monitoring unit 401 is configured to monitor whether the terminal device roams to access the first wireless access node AP.

The testing unit 402 is configured to test whether the terminal device can access the network after accessing the first AP if the terminal device roams to access the first AP.

As an optional implementation manner, the testing unit 402 sends a test data frame to a STA outside the network established by the first AP, so that the STA returns a response frame; if the testing unit 402 receives the response frame returned by the STA, it determines After accessing the first AP, the terminal device can access the network; if the testing unit 402 does not receive the above-mentioned response frame, it is determined that the terminal device cannot access the network after accessing the first AP.

The adding unit 403 is configured to add the first AP to a blacklist if the terminal device cannot access the network after accessing the first AP, so as to prohibit the terminal device from accessing the first AP.

It can be seen that using the WiFi roaming network access device described in FIG. 4 , the terminal device can avoid accessing APs with strong signals but unable to connect to the Internet when roaming, thereby ensuring the continuity of roaming network services.

Please also refer to FIG. 5. FIG. 5 is a schematic structural diagram of another WiFi roaming network access device disclosed in an embodiment of the present invention. The device shown in FIG. 5 is obtained by optimizing the device shown in FIG. 4 . Compared with the device shown in FIG. 4 , the device shown in FIG. 5 further includes:

The first obtaining unit 404 is configured to obtain the signal strengths of other APs except the first AP from the extended service group ESS.

The first selection unit 405 is configured to select the second AP with the strongest signal strength other than the first AP in the above-mentioned ESS for access.

The counting unit 406 is configured to count the time when the first AP is added to the above-mentioned blacklist.

The deletion unit 407 is configured to delete the first AP from the blacklist if the time for adding the first AP to the blacklist exceeds a preset time threshold.

In this embodiment of the present invention, the statistics unit 406 counts the time when the first AP was added to the blacklist. If the time exceeds a preset time threshold (for example, the time threshold is set to 24 hours), the deletion unit 407 removes the first AP from the blacklist. Deleted from the blacklist; in subsequent roaming, the terminal device can try to access the first AP again, so as to avoid the failed access caused by temporary network failure, which affects the terminal device's access to the network through the first AP after the first AP is repaired. .

It can be seen that using the network access device for WiFi roaming described in FIG. 5 , the terminal device can avoid accessing APs with strong signals but unable to connect to the Internet when roaming, thereby ensuring the continuity of roaming network services.

Please refer to FIG. 6, which is a schematic structural diagram of a terminal device 600 disclosed in an embodiment of the present invention. As shown in FIG. 6 , for the convenience of description, only the part related to the embodiment of the present invention is shown, and the specific technical details are not disclosed, please refer to the method part of the embodiment of the present invention. The terminal can be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales, a sales terminal), a vehicle-mounted computer, etc. The terminal is a mobile phone as an example:

FIG. 6 is a block diagram showing a partial structure of a mobile phone related to a terminal provided by an embodiment of the present invention. Referring to FIG. 6 , the mobile phone includes: a radio frequency (RF) circuit 601 , a memory 602 , an input unit 603 , a display unit 604 , a sensor 605 , an audio circuit 606 , a wireless fidelity (WiFi) module 607 , and a processor 608 , and the power supply 609 and other components. Those skilled in the art can understand that the structure of the mobile phone shown in FIG. 6 does not constitute a limitation on the mobile phone, and may include more or less components than the one shown, or combine some components, or arrange different components.

Below in conjunction with Figure 6, the various components of the mobile phone are introduced in detail:

The RF circuit 601 can be used for receiving and sending signals during transmission and reception of information or during a call. In particular, after receiving the downlink information of the base station, it is processed by the processor 608; in addition, the designed uplink data is sent to the base station. Generally, the RF circuit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 601 can also communicate with the network and other devices through wireless communication. The above-mentioned wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (General Packet Radio Service, GPRS), Code Division Multiple Access (Code Division Multiple Access) , CDMA), Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA), Long Term Evolution (Long Term Evolution, LTE), email, Short Messaging Service (Short Messaging Service, SMS) and the like.

The memory 602 can be used to store software programs and modules, and the processor 608 executes various functional applications and data processing of the mobile phone by running the software programs and modules stored in the memory 602 . The memory 602 may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program (such as a sound playback function, an image playback function, etc.) required for at least one function, and the like; Data created by the use of the mobile phone (such as audio data, phone book, etc.), etc. Additionally, memory 602 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 603 can be used for receiving inputted numerical or character information, and generating key signal input related to user setting and function control of the mobile phone. Specifically, the input unit 603 may include a touch panel 6031 and other input devices 6032 . The touch panel 6031, also referred to as a touch screen, can collect the user's touch operations on or near it (such as the user's finger, stylus, etc., any suitable object or accessory on or near the touch panel 6031). operation), and drive the corresponding connection device according to the preset program. Optionally, the touch panel 6031 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it to the touch controller. To the processor 608, and can receive the command sent by the processor 608 and execute it. In addition, the touch panel 6031 can be realized by various types of resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 6031 , the input unit 603 may also include other input devices 6032 . Specifically, other input devices 6032 may include, but are not limited to, one or more of physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, joysticks, and the like.

The display unit 604 may be used to display information input by the user or information provided to the user and various menus of the mobile phone. The display unit 604 may include a display panel 6041. Optionally, the display panel 6041 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED) or the like. Further, the touch panel 6031 may cover the display panel 6041. When the touch panel 6031 detects a touch operation on or near it, it transmits it to the processor 608 to determine the type of the touch event, and then the processor 608 determines the type of the touch event according to the touch event. Type provides corresponding visual output on display panel 6041. Although in FIG. 6, the touch panel 6031 and the display panel 6041 are used as two independent components to realize the input and input functions of the mobile phone, in some embodiments, the touch panel 6031 and the display panel 6041 can be integrated to form Realize the input and output functions of the mobile phone.

The cell phone may also include at least one sensor 605, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 6041 according to the brightness of the ambient light, and the proximity sensor may turn off the display panel 6041 and/or when the mobile phone is moved to the ear. or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes), and can detect the magnitude and direction of gravity when it is stationary. games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc. Repeat.

The audio circuit 606, the speaker 6061, and the microphone 6062 can provide the audio interface between the user and the mobile phone. The audio circuit 606 can transmit the received audio data converted electrical signal to the speaker 6061, and the speaker 6061 converts it into a sound signal for output; on the other hand, the microphone 6062 converts the collected sound signal into an electrical signal, which is converted by the audio circuit 606 After receiving, it is converted into audio data, and then the audio data is output to the processor 608 for processing, and then sent to, for example, another mobile phone through the RF circuit 601, or the audio data is output to the memory 602 for further processing.

WiFi is a short-distance wireless transmission technology. The mobile phone can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 607. It provides users with wireless broadband Internet access. Although FIG. 6 shows the WiFi module 607, it can be understood that it does not belong to the essential structure of the mobile phone, and can be completely omitted as required within the scope of not changing the essence of the invention.

The processor 608 is the control center of the mobile phone, using various interfaces and lines to connect various parts of the entire mobile phone, by running or executing the software programs and/or modules stored in the memory 602, and calling the data stored in the memory 602. Various functions of the mobile phone and processing data, so as to monitor the mobile phone as a whole. Optionally, the processor 608 may include one or more processing units; preferably, the processor 608 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, etc. , the modem processor mainly deals with wireless communication. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 608 .

The mobile phone also includes a power source 609 (such as a battery) for supplying power to various components. Preferably, the power source can be logically connected to the processor 608 through a power management system, so as to manage charging, discharging, and power consumption management functions through the power management system.

Although not shown, the mobile phone may also include a camera, a Bluetooth module, and the like, which will not be repeated here.

In the foregoing embodiments, the method flow of each step can be implemented based on the structure of the terminal device. The application layer and the operating system kernel can be regarded as the components of the abstract structure of the processor 608 .

In this embodiment of the present invention, the processor 608 is configured to perform the following operations by calling program codes stored in the memory 602:

Monitoring whether the terminal device roams to access the first wireless access node AP;

If the terminal device roams to access the first AP, test whether the terminal device can access the network after accessing the first AP;

If the terminal device cannot access the network after accessing the first AP, the first AP is added to the blacklist to prohibit the terminal device from accessing the first AP.

As an optional implementation manner, the processor 608 is further configured to perform the following operations by calling the program codes stored in the memory 602:

Obtain the signal strengths of other APs except the first AP from the extended service group ESS;

Select the second AP with the strongest signal strength in the ESS except the first AP for access.

As an optional implementation manner, the processor 608 is further configured to perform the following operations by calling the program codes stored in the memory 602:

Count the time when the first AP was added to the above blacklist;

If the time for adding the first AP to the blacklist exceeds the preset time threshold, the first AP is deleted from the blacklist.

As an optional implementation manner, the processor 608 is further configured to perform the following operations by calling the program codes stored in the memory 602:

Monitor the data transmission speed of accessing the network through the first AP;

If the above-mentioned data transmission speed is lower than the preset threshold, broadcast a request message to other APs in the above-mentioned ESS except the first AP, so that the above-mentioned other APs return the number of STAs connected to the above-mentioned other APs;

The third AP with the least number of STAs connected to the other APs above is selected for access.

As an optional implementation manner, the processor 608 is further configured to perform the following operations by calling the program codes stored in the memory 602:

Monitoring the above-mentioned data transmission speed of accessing the network through the first AP;

If the above-mentioned data transmission speed is lower than the above-mentioned preset threshold, obtain the channel information of the first AP;

According to the channel information of the first AP, a fourth AP in the ESS that is different from the channel of the first AP is selected for access.

It can be seen that using the terminal device described in FIG. 6 , the terminal device can avoid accessing an AP with strong signal but unable to connect to the network when roaming, thereby ensuring the continuity of the roaming network service.

It is worth noting that in the above embodiments of the WiFi roaming network access device and terminal equipment, the units included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized ; In addition, the specific names of the functional units are only for the convenience of distinguishing from each other, and are not used to limit the protection scope of the present invention.

In addition, those of ordinary skill in the art can understand that all or part of the steps in the above method embodiments can be implemented by instructing relevant hardware through a program, and the corresponding program can be stored in a computer-readable storage medium. The storage medium can be read-only memory, magnetic disk or optical disk, etc.

The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the embodiments of the present invention. , all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (9)

1. A WiFi roaming network access method is characterized in that an AP (access point) currently accessed by a terminal device can surf the internet but has general signals, and comprises the following steps:

monitoring whether the terminal equipment is roamed and accessed to a first wireless access node AP; if the network signal of the first wireless access node AP is judged to be stronger than the currently accessed AP, roaming access is carried out to the first wireless access node AP;

if the terminal equipment is roamed and accessed to the first AP, testing whether the terminal equipment can access the network after being accessed to the first AP;

if the terminal equipment cannot access the network after accessing the first AP, adding the first AP into a blacklist to prohibit the terminal equipment from accessing the first AP;

acquiring the signal strength of other APs except the first AP from an ESS (extended service set);

selecting a second AP with the strongest signal intensity except the first AP in the ESS for accessing;

if the terminal equipment can access the network after accessing the second AP, monitoring the data transmission speed of the network accessed by the second AP;

if the data transmission speed is lower than a preset threshold value, broadcasting a request message to other APs except the second AP in the ESS so as to enable the other APs to return the number of STAs connected with the other APs;

selecting a third AP with the least number of connected STAs from the other APs for access;

counting the time for adding the first AP into the blacklist;

and if the time for adding the first AP into the blacklist exceeds a preset time threshold, deleting the first AP from the blacklist so that the terminal equipment can try to access the first AP again in later roaming.

2. The method of claim 1, wherein the testing whether the terminal device can access the network after accessing the first AP comprises:

sending a test data frame to a wireless station STA outside a network established by the first AP so that the STA returns a response frame;

if the terminal equipment receives the response frame, determining that the terminal equipment can access the network after accessing the first AP; and if the terminal equipment does not receive the response frame, determining that the terminal equipment cannot access the network after accessing the first AP.

3. The method according to any of claims 1-2, wherein if the terminal device can access the network after accessing the first AP, the method further comprises:

monitoring a data transmission speed of accessing a network through the first AP;

if the data transmission speed is lower than a preset threshold value, broadcasting a request message to other APs except the first AP in the ESS so as to enable the other APs to return the number of STAs connected with the other APs;

and selecting a third AP with the least number of connected STAs in the other APs for access.

4. The method according to any of claims 1-2, wherein if the terminal device can access the network after accessing the first AP, the method further comprises:

monitoring the data transmission speed through the first AP access network;

if the data transmission speed is lower than the preset threshold value, acquiring channel information of the first AP;

and selecting a fourth AP with a channel different from that of the first AP in the ESS for access according to the channel information of the first AP.

5. A WiFi roaming network access device is characterized in that an AP currently accessed by a terminal device can surf the internet but has general signals, and comprises:

the first monitoring unit is used for monitoring whether the terminal equipment is roamed and accessed to the first wireless access node AP; if the network signal of the first wireless access node AP is judged to be stronger than the currently accessed AP, roaming access is carried out to the first wireless access node AP;

the testing unit is used for testing whether the terminal equipment can access the network after accessing the first AP if the terminal equipment is roamed and accessed to the first AP;

an adding unit, configured to add the first AP to a blacklist to prohibit the terminal device from accessing the first AP if the terminal device cannot access the network after accessing the first AP;

a first obtaining unit, configured to obtain, from an ESS, signal strengths of APs other than the first AP;

a first selection unit, configured to select a second AP with the strongest signal strength in the ESS, except for the first AP, for access;

the second monitoring unit is used for monitoring the data transmission speed of the network accessed by the second AP if the terminal equipment can access the network after accessing the second AP;

a broadcasting unit, configured to broadcast a request message to other APs except the second AP in the ESS if the data transmission speed is lower than a preset threshold, so that the other APs return the number of STAs connected to the other APs;

a second selecting unit, configured to select a third AP with the smallest number of STAs connected in the other APs for access;

a counting unit, configured to count a time for adding the first AP to the blacklist;

and the deleting unit is used for deleting the first AP from the blacklist if the time for adding the first AP into the blacklist exceeds a preset time threshold value, so that the terminal equipment can try to access the first AP again in the following roaming.

6. The apparatus of claim 5, wherein the test unit comprises:

a sending subunit, configured to send a test data frame to a wireless station STA outside a network established by the first AP, so that the STA returns a response frame;

a determining subunit, configured to determine that, if the terminal device receives the response frame, the terminal device can access the network after accessing the first AP, and determine that, if the terminal device does not receive the response frame, the terminal device cannot access the network after accessing the first AP.

7. The apparatus of any one of claims 5 to 6, further comprising:

the second monitoring unit is used for monitoring the data transmission speed of the network accessed by the first AP if the terminal equipment can access the network after accessing the first AP;

a broadcasting unit, configured to broadcast a request message to other APs except the first AP in the ESS if the data transmission speed is lower than a preset threshold, so that the other APs return the number of STAs connected to the other APs;

and a second selecting unit, configured to select a third AP with the smallest number of STAs connected in the other APs for access.

8. The apparatus of any one of claims 5 to 6, further comprising:

a third monitoring unit, configured to monitor the data transmission speed of the network accessed by the first AP if the terminal device can access the network after accessing the first AP;

a second obtaining unit, configured to obtain channel information of the first AP if the data transmission speed is lower than the preset threshold;

and a third selecting unit, configured to select a fourth AP in the ESS, which is different from the channel of the first AP, for access according to the channel information of the first AP.

9. A terminal device, comprising:

a memory storing executable program code;

a processor coupled with the memory;

the processor calls the executable program code stored in the memory to perform the method of any one of claims 1 to 4.