TWI669022B - Wireless access point filtering method, computer program, and electronic device - Google Patents

Abstract

A wireless access point filtering method, the method comprising: determining a step of determining whether an electronic device is located in a vehicle; and calculating a step of determining that the electronic device is located in the vehicle and calculating a relative of the electronic device and the wireless access point Speed; and a screening step of filtering and filtering the wireless access point based on the relative speed.

Description

Wireless access point filtering method, computer program product and electronic device

The present invention relates to a wireless access point (AP) filtering method, a computer program product, and an electronic device, and more particularly to a wireless access point filtering method, a computer program product, and a mobile state (such as a moving vehicle) Electronic device.

When the user of the mobile device rides on the bus, even if there is an access point (AP) on the bus, the mobile device may automatically connect to the AP outside the bus, but during the bus driving, as the bus continues Mobile, the distance between the mobile device and the APs is constantly changing, so that the mobile device will continuously disconnect from the AP and reconnect to the new AP, thereby causing the wireless connection of the mobile device on the bus to be unstable and the communication quality to be poor.

In view of the above problems, it is necessary to provide a wireless access point filtering method that can filter out wireless access points capable of providing a stable wireless connection.

In addition, it is necessary to provide a computer program product and an electronic device corresponding to the above method.

A wireless access point filtering method for filtering a wireless access point scanned by an electronic device located in a traveling vehicle, the method comprising: determining a step of determining whether the electronic device is located in the vehicle; Step, when determining that the electronic device is located in the vehicle, calculating a relative speed of the electronic device and the wireless access point; A screening step of filtering and filtering the wireless access point based on the relative speed.

A computer program product for wireless access point filtering for filtering a wireless access point scanned by an electronic device located in a traveling vehicle, the computer program product comprising: a determining module for determining the Whether the electronic device is located in the vehicle; the computing module is configured to: when the determining module determines that the electronic device is located in the vehicle, calculate a relative speed of the electronic device and the wireless access point; and The wireless access point is filtered and filtered according to the relative speed.

An electronic device comprising a processor and a memory connected to the processor, the memory for storing the computer program product for wireless access point filtering, wherein the processor is configured to perform the wireless access point Filtered computer program products.

The computer program product and method for wireless access point filtering of the present invention can screen out wireless access points that can provide a relatively stable wireless connection, so that the electronic device can obtain a relatively stable wireless connection even when it is in a mobile state.

1‧‧‧Electronic device

10‧‧‧Computer Program Products for Wireless Access Point Filtering

11‧‧‧Speed Module

13‧‧‧ Distance sensing module

15‧‧‧ receiving module

17‧‧‧Monitor

18‧‧‧ memory

19‧‧‧ Processor

101‧‧‧Setting module

102‧‧‧Get Module

103‧‧‧Judgement module

104‧‧‧Monitor module

105‧‧‧Computation Module

106‧‧‧Screening module

107‧‧‧recording module

1 is a functional block diagram of an electronic device in accordance with a preferred embodiment of the present invention.

2 is a functional block diagram of a computer program product for wireless access point filtering in accordance with a preferred embodiment of the present invention.

3A-3B are flow diagrams of a wireless access point filtering method in accordance with a preferred embodiment of the present invention.

4A-4B are schematic diagrams showing movement directions of a wireless access point and an electronic device according to a preferred embodiment of the present invention.

The technology in the embodiment of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments are described clearly and completely, and it is obvious that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without the creative work are all within the scope of the present invention.

It should be noted that when an element is referred to as "electrically connected" to another element, it can be directly on the other element or the element can be present. When an element is considered to be "electrically connected" to another element, it can be a contact connection, for example, a wire connection or a non-contact connection, for example, a non-contact coupling.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art. The terminology used in the description of the invention herein is for the purpose of describing the particular embodiments. The term "and/or" used herein includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The features of the embodiments and examples described below may be combined with each other without conflict.

Please refer to FIG. 1 and FIG. 2 for an application environment and a functional module diagram of a computer program product 10 for wireless access point filtering according to a preferred embodiment of the present invention. The computer program product 10 for wireless access point filtering is installed and operates in the electronic device 1. The electronic device 1 can be a device for connecting a wireless access point, such as a mobile phone, a PDA (personal digital assistant), a handheld game console, a digital camera or a palmtop computer. The computer program product 10 for wireless access point filtering can be wirelessly scanned by the electronic device 1 when the electronic device 1 is in a moving state (for example, in a moving vehicle, a ship, etc.) The points are filtered to screen out wireless access points that provide a more stable wireless connection to the electronic device 1, such as the wireless access point provided by the vehicle itself. In the preferred embodiment, the computer program for wireless access point filtering The product 10 can screen out wireless access points with a relative speed of zero or a relatively low speed to the electronic device 1.

The electronic device 1 further includes a speed measuring module 11 , a distance sensing module 13 , a receiving module 15 , a display 17 , a memory 18 , and a processor 19 .

The speed measuring module 11 is configured to measure the moving speed of the electronic device 1. For example, the speed measuring module 11 can determine the position of the electronic device 1 by using a conventional satellite positioning system, and calculate the moving speed of the electronic device 1 by using the position change with time. The satellite positioning system can be Russia's Global Navigation Satellite System (GLONASS), the United States' Global Positioning System (GPS), the European Union's Galileo positioning system or China's Beidou satellite positioning system. When the electronic device 1 is located in a traveling vehicle, the moving speed is also the traveling speed of the vehicle.

The distance sensing module 13 is configured to measure the distance between the electronic device 1 and surrounding objects. In the preferred embodiment, the distance sensing module 13 can be a microwave sensor. When the electronic device 1 is located in a traveling vehicle, the object can be the inner wall, the top wall, etc. of the vehicle. . The distance measured by the distance sensing module 13 combined with the moving speed of the electronic device 1 measured by the speed measuring module 11 is used to determine whether the electronic device 1 is located in a traveling vehicle.

The receiving module 15 is configured to receive information periodically broadcast by the wireless access point, for example, the information may be a wireless signal such as a beacon frame, and obtain the signal frequency Fap of the information and the electronic device 1 actually receives the information. The signal frequency is Fsta. Specifically, the receiving module 15 can learn the current channel information of the wireless access point and the signal frequency Fsta that the electronic device 1 actually receives the information according to the information received from the wireless access point. Then, by referring to the current channel number included in the current channel information, the signal frequency Fap of the wireless access point corresponding to the information is sent. The signal frequency Fap of the wireless access point transmitting the information and the signal frequency Fsta of the electronic device 1 actually receiving the information are used by the computer program product 10 for wireless access point filtering to calculate the wireless access point and the Electronic device 1 Relative speed.

The display 17 is configured to display a list of wireless access points selected by the computer program product 10 for wireless access point filtering to provide a selection for the user.

The memory 18 can be built in the electronic device 1, and can also be a separate external storage card, such as a SIM card (Smart Media Card), an SD card (Secure Digital Card), and the like. The memory 18 is used to store various types of data and code, such as the computer program product 10 described above for wireless access point filtering. The processor 19 is configured to execute an operating system and applications in the electronic device 1, for example, to execute the computer program product 10 for wireless access point filtering.

The computer program product 10 for wireless access point filtering includes a setting module 101, an obtaining module 102, a determining module 103, a monitoring module 104, a computing module 105, a screening module 106, and a recording module 107.

The setting module 101 is configured to set an initial value of the state parameter P of the electronic device 1, and the state parameter P represents whether the electronic device 1 is located in the vehicle. In the preferred embodiment, the initial value of the state parameter P is set to false, indicating that the electronic device 1 is located outside the vehicle. In addition, when the state parameter P is true, it indicates that the electronic device 1 is located in the vehicle.

The obtaining module 102 is configured to obtain the moving speed of the electronic device 1 and the distance of the object farthest from the electronic device 1 by the speed measuring module 11 and the distance sensing module 13 , and the object may be a vehicle The inner wall, the top wall, and the like.

The determining module 103 is configured to determine whether the electronic device 1 is located in the vehicle. Specifically, the determining module 103 determines whether the moving speed is greater than a first preset speed (eg, 20 km/h) and whether the distance is less than a preset distance (eg, 1 m), if the moving speed is greater than the first preset speed, and the distance is less than the preset distance, determining that the electronic device 1 is located in the vehicle, if the moving speed is less than the first preset Speed or the distance is greater than the preset distance, The determining module 103 further determines whether the moving speed is less than a second preset speed (eg, 2 km/h) and whether the distance is greater than the preset distance (eg, 1 m), if the moving speed is less than the second preset speed, and the If the distance is greater than the preset distance, it is determined that the electronic device 1 is located outside the vehicle, and if the moving speed is greater than the second preset speed or the distance is less than the preset distance, it is determined whether the electronic device 1 is located in the vehicle. Inside.

The monitoring module 104 is configured to monitor, by the receiving module 15 , the information periodically broadcast by the wireless access point, and obtain the signal frequency Fap of the information sent by the wireless access point according to the information, and the electronic device 1 actually receives the information. The signal frequency is Fsta.

The computing module 105 is configured to calculate a relative speed of the electronic device 1 and the wireless access point according to the signal frequency Fap of the information transmitted by the wireless access point and the signal frequency Fsta of the electronic device 1 actually receiving the information. In the preferred embodiment, the calculation module 105 calculates the relative speed according to the Doppler Effect formula: (Fsta-Fap) / Fap = -Vsta × cos θ / c, where Fap represents the wireless The signal frequency at which the access point sends the information, Fsta represents the frequency of the signal that the electronic device 1 actually receives the information, and θ represents the direction of travel of the electromagnetic wave that the wireless access point transmits the information and the direction of movement of the electronic device 1. An angle (as shown in FIG. 4A, wherein the AP represents a wireless access point and the STA represents the electronic device 1). In the preferred embodiment, the angle θ is defined as zero, that is, the electromagnetic wave traveling direction of the information is assumed to be The moving direction of the electronic device 1 is the same (as shown in FIG. 4B), and c is the speed of light, which is equal to 2.97972458×10 ⁸ m/s, and Vsta represents the relative speed.

The screening module 106 is configured to filter and filter the wireless access point according to the relative speed. Specifically, the screening module 106 determines whether the relative speed is equal to zero. If the relative speed is equal to zero, the recording module 107 determines whether the wireless access point has not waited, and if the wireless access point has not waited, waits After the preset time (for example, 1 s), the monitoring module 104 monitors the information periodically broadcast by the wireless access point, and the computing module 105 calculates the wireless access point. The relative speed with the electronic device 1, if the relative speed is still zero at this time, and has been waited for, indicating that the wireless access point is stationary relative to the electronic device 1, providing a stable wireless connection, accepting the wireless connection Entry point.

If the relative speed is not equal to zero, the screening module 106 further determines whether the relative speed is less than a preset relative speed (eg, 2 km/h), and if the relative speed is less than the preset relative speed, indicating that the wireless access point is available The relatively dynamic wireless connection, the screening module 106 accepts the wireless access point. The screening module 106 can provide a list of wireless access points accepted by the screening module 106 through the display 17, and the user can select a wireless access point that can provide a relatively stable wireless connection according to the list. If the relative speed is greater than or equal to the preset relative speed, the wireless access point cannot provide a relatively stable wireless connection, and the screening module 106 filters out the wireless access point, that is, does not accept the wireless access. point.

3A-3B are flowcharts showing a preferred implementation of the wireless access point filtering method of the present invention. The wireless access point filtering method is applied to an electronic device 1 equipped with a computer program product 10 for wireless access point filtering, and includes the following steps.

Step 301, the setting module 101 sets a state parameter P, indicating whether the electronic device 1 is located in the vehicle. In the preferred embodiment, the initial value of the state parameter P is set to false, indicating that the electronic device 1 is located in the vehicle. outer. It can be understood that once the initial value of the state parameter P is set and the flow is performed again, the step 301 can be omitted.

In step 303, the acquisition module 102 obtains the moving speed of the electronic device 1 and the distance of the object farthest from the electronic device 1 by the speed measuring module 11 and the distance sensing module 13, and the object may be a vehicle. The inner wall, the top wall, and the like.

Step 305, the determining module 103 determines whether the moving speed is greater than a first preset speed (eg, 20 km/h) and whether the distance is less than a preset distance (eg, 1 m), and if the moving speed is greater than the first preset speed, And the distance is less than the preset distance, determining that the electronic device 1 is located In the vehicle, the process proceeds to step 307; if the moving speed is less than the first preset speed or the distance is greater than the preset distance, then step 309 is entered.

In step 307, the setting module 101 sets the state parameter P to true, indicating that the electronic device 1 is located in the vehicle.

Step 309, the determining module 103 further determines whether the moving speed is less than a second preset speed (eg, 2 km/h) and whether the distance is greater than the preset distance (eg, 1 m), if the moving speed is less than the second preset If the speed is greater than the preset distance, it is determined that the electronic device 1 is located outside the vehicle, and proceeds to step 311; if the moving speed is greater than the second preset speed or the distance is less than the preset distance, returning to the step 303. Re-determine whether the electronic device 1 is located in the vehicle.

Step 311, the setting module 101 sets the state parameter P to false, indicating that the electronic device 1 is located outside the vehicle.

Step 313, determining, according to the state parameter P, whether the electronic device 1 is located in the vehicle. When the state parameter P is true, the process proceeds to step 315. When the state parameter P is false, the process ends.

It can be understood that the foregoing steps 301, 307, 311, and 313 can be omitted, and the subsequent process can be directly performed according to the determination result of the determination module 103 in steps 305 and 309. If it is determined that the electronic device 1 is located in the vehicle, the process proceeds to the step. 315. When it is determined that the electronic device 1 is located outside the vehicle, the process ends.

Step 315, the monitoring module 104 monitors the information periodically broadcast by the wireless access point by the receiving module 15, and obtains the signal frequency Fap of the wireless access point to send information according to the information, and the electronic device 1 actually receives the information. The signal frequency is Fsta.

In step 317, the computing module 105 calculates the relative speed of the electronic device 1 and the wireless access point according to the signal frequency Fap of the information transmitted by the wireless access point and the signal frequency Fsta of the electronic device 1 actually receiving the information. In the preferred embodiment, the calculation module 105 calculates the relative speed according to the formula of the Doppler effect: (Fsta-Fap) / Fap = -Vsta × cos θ / c, wherein Fap represents the wireless access point to send The signal frequency of the information, Fsta represents the frequency of the signal that the electronic device 1 actually receives the information, and θ represents the angle between the traveling direction of the electromagnetic wave that the wireless access point transmits the information and the moving direction of the electronic device 1 (see FIG. 4A). The AP represents the wireless access point, and the STA represents the electronic device 1). In the preferred embodiment, the angle θ is defined as zero, that is, the electromagnetic wave traveling direction of the information and the movement of the electronic device 1 are assumed. The direction is the same (as shown in Figure 4B), c is the speed of light, equal to 2.97972458 × 10 ⁸ m / s, Vsta represents the relative speed.

Step 319, the screening module 106 filters and filters the wireless access point according to the relative speed. Specifically, the screening module 106 determines whether the relative speed is equal to zero. If the relative speed is equal to zero, the process proceeds to step 321 if the relative If the speed is not equal to zero, then step 325 is entered.

Step 321 , the recording module 107 determines whether the wireless access point has not waited. If the recording module 107 determines that the wireless access point has not waited, then proceeds to step 323, and at the same time, the recording module 107 records the waiting. The wireless access point; if the recording module 107 determines that the wireless access point has been waiting, then proceeds to step 329.

Step 323, after waiting for the preset time (such as 1 s), proceed to step 315 again, and repeat steps 317, 319, and 321 . If, at this time, the relative speed is still zero, and has waited, indicating that the wireless access point is relatively The electronic device 1 is stationary to provide a stable wireless connection, and the flow proceeds to step 329.

Step 325, the screening module 106 further determines whether the relative speed is less than a preset relative speed (eg, 2 km/h). If the relative speed is less than the preset relative speed, the wireless access point can provide relatively stable wireless. Connect, the flow proceeds to step 329. If the relative speed is greater than or equal to the preset relative speed, it indicates that the wireless access point cannot provide relative For a stable wireless connection, proceed to step 327.

In step 327, the screening module 106 filters out the wireless access point, that is, does not accept the wireless access point, and the process ends.

In step 329, the screening module 106 receives the wireless access point, and the screening module 106 can provide a list of wireless access points accepted by the screening module 106 by using the display 17. The user can select and provide according to the list. The wireless access point for a stable wireless connection ends.

The computer program product and method for wireless access point filtering of the present invention can screen out wireless access points that can provide a relatively stable wireless connection, so that the electronic device 1 can obtain a relatively stable wireless connection even when it is in a mobile state.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. In addition, those skilled in the art can make other changes in the spirit of the present invention. Of course, the changes made in accordance with the spirit of the present invention should be included in the scope of the present invention.

Claims (13)

A wireless access point filtering method for filtering a wireless access point scanned by an electronic device located in a traveling vehicle, the improvement comprising the steps of: obtaining an acquisition step, acquiring a moving speed of the electronic device, and The distance from the object farthest from the electronic device, the object is the inner wall and the top wall of the vehicle; the determining step determines whether the electronic device is located in the vehicle, wherein it is determined whether the moving speed is greater than the first preset Speed, and whether the distance is less than a preset distance, if the moving speed is greater than the first preset speed, and the distance is less than the preset distance, determining that the electronic device is located in the vehicle; calculating step, when determining the electronic device Located in the vehicle, calculating a relative speed of the electronic device and the wireless access point; and a screening step of filtering and filtering the wireless access point according to the relative speed. The wireless access point filtering method of claim 1, wherein if the moving speed is less than the first preset speed, or the distance is greater than the preset distance, the determining step further determines whether the moving speed is less than the first And a preset speed, and if the distance is greater than the preset distance, if the moving speed is less than the second preset speed, and the distance is greater than the preset distance, determining that the electronic device is located outside the vehicle; if the moving speed is If it is greater than the second preset speed, or the distance is less than the preset distance, return to the obtaining step. The method for filtering a wireless access point according to claim 1, wherein the method includes: a monitoring step of monitoring information periodically broadcast by the wireless access point, and acquiring, by the information, the wireless access point to send the information. The signal frequency and the signal frequency at which the electronic device actually receives the information; the calculating step calculates the relative speed according to the signal frequency at which the wireless access point transmits the information and the signal frequency at which the electronic device actually receives the information. The wireless access point filtering method according to claim 3, wherein the calculating step calculates the relative speed according to a formula (Fsta-Fap) / Fap = -Vsta × cos θ / c, wherein Fsta represents the actual electronic device The frequency of the signal received by the information, Fap represents the frequency of the signal transmitted by the wireless access point, and θ represents the angle between the direction of travel of the electromagnetic wave that the wireless access point transmits the information and the direction of movement of the electronic device, θ defines Zero, c is the speed of light, and Vsta represents the relative speed. The wireless access point filtering method according to claim 3, wherein the screening step determines whether the relative speed is equal to zero, and if the relative speed is equal to zero, determining whether the wireless access point continues, if it has been continued And accepting the wireless access point; if not, waiting for the preset time, repeating the listening step, the calculating step, and the screening step. The wireless access point filtering method of claim 5, wherein if the relative speed is not equal to zero, the screening step further determines whether the relative speed is less than a preset relative speed, if the relative speed is greater than or equal to the preset The relative speed is filtered out of the wireless access point, and if the relative speed is less than the preset relative speed, the wireless access point is accepted. A computer program product for wireless access point filtering for filtering a wireless access point scanned by an electronic device located in a traveling vehicle, the improvement being that the computer for wireless access point filtering The program product includes: an acquisition module, configured to acquire a moving speed of the electronic device and a distance of an object farthest from the electronic device, the object is an inner wall and a top wall of the vehicle; and the determining module is configured to determine the Whether the electronic device is located in the vehicle, wherein the determining module determines whether the moving speed is greater than the first preset speed, and whether the distance is less than a preset distance, if the moving speed is greater than the first preset speed, and the distance Is less than the preset distance, then judge Disconnecting the electronic device in the vehicle; the computing module is configured to: when the determining module determines that the electronic device is located in the vehicle, calculate a relative speed of the electronic device and the wireless access point; and a screening module, For screening and filtering the wireless access point according to the relative speed. The computer program product for wireless access point filtering according to claim 7, wherein if the moving speed is less than the first preset speed, or the distance is greater than the preset distance, the determining module further determines Whether the moving speed is less than the second preset speed, and whether the distance is greater than the preset distance, if the moving speed is less than the second preset speed, and the distance is greater than the preset distance, determining that the electronic device is located in the vehicle If the moving speed is greater than the second preset speed, or the distance is less than the preset distance, return to the acquiring module. The computer program product for wireless access point filtering, as described in claim 7, wherein the computer program product for wireless access point filtering further comprises: a monitoring module, configured to monitor the wireless access point Periodically broadcast information, and based on the information, obtain the frequency of the signal transmitted by the wireless access point and the frequency of the signal that the electronic device actually receives the information; the computing module transmits the frequency of the information according to the wireless access point. And the signal frequency at which the electronic device actually receives the information calculates the relative speed. The computer program product for wireless access point filtering according to claim 9, wherein the calculation module calculates the relative speed according to a formula (Fsta-Fap)/Fap=-Vsta×cos θ/c, wherein Fsta represents the signal frequency at which the electronic device actually receives the information, Fap represents the signal frequency at which the wireless access point transmits the information, and θ represents the traveling direction of the electromagnetic wave and the moving direction of the electronic device by the wireless access point to send the information. Between the angles, θ is defined as zero, c is the speed of light, and Vsta represents the relative speed. The computer program product for wireless access point filtering according to claim 9, wherein the screening module determines whether the relative speed is equal to zero, and if the relative speed is equal to zero, determining whether the wireless access point has continued If it has been continued, the wireless access point is accepted; if it is not continued, after waiting for a preset time, the monitoring module monitors the information periodically broadcast by the wireless access point. The computer program product for wireless access point filtering according to claim 11, wherein if the relative speed is not equal to zero, the screening module further determines whether the relative speed is less than a preset relative speed, if the relative speed If the preset relative speed is greater than or equal to, the wireless access point is filtered out, and if the relative speed is less than the preset relative speed, the wireless access point is accepted. An electronic device comprising a processor and a memory connected to the processor, the memory for storing a computer program product for wireless access point filtering, the processor for performing the wireless access point filtering method, The improvement is that the wireless access point filtering method is the wireless access point filtering method described in any one of claims 1-6.