WO2016119383A1 - Method and terminal for acquiring wi-fi signal strength - Google Patents

Abstract

Disclosed are a method and terminal for acquiring WI-FI signal strength, the method comprising: acquiring information about WI-FI signal strength connected at a current position of a terminal; and according to the acquired information about WI-FI signal strength connected at the current position of the terminal and a signal strength historical database, determining a historical position which has the minimum displacement from the current position of the terminal and has WI-FI signal strength superior to that at the current position of the terminal. The technical solution of the present invention allows a user to acquire higher WI-FI signal strength by means of the minimum displacement, and thus the user has faster and more stable internet browsing experience.

Description

Method and terminal for acquiring WI-FI signal strength Technical field

This document relates to the technical field of obtaining WI-FI signal strength, and in particular to a method and terminal for acquiring WI-FI signal strength.

Background technique

The current terminal equipment generally has the WI-FI (Wireless Hi-Fi) function, which provides users with a more convenient and quick way to access the Internet. It is generally composed of two roles: AP (Access Point, Wireless Access Point) and Station (terminal). The AP is responsible for providing wireless access and access to the Internet. The terminal is usually a terminal device such as a smart phone.

Because WI-FI belongs to the 2.4GHz wireless communication category, WI-FI signal strength is affected by many factors such as router placement, surrounding signal interference, wall interference during propagation, etc., and there is inevitably strong in the coverage of an AP. Signal and weak signal areas. When the terminal device is located in the strong signal area, the Internet access speed is fast, and when the terminal device is located in the weak signal area, the Internet access speed naturally becomes slow due to the signal difference.

At the same time, since the WI-FI antenna built in the terminal device has directivity, even if the terminal is in the same position (no positional movement and adjustment), but simply rotates the terminal in parallel, the signal strength received by the terminal is relatively high. Significant changes, which in turn have a significant impact on the speed of the terminal's Internet access. The user usually cannot know which direction is the best placement direction of the current location. Therefore, how to obtain the best WI-FI signal strength under the condition of the minimum moving distance and direction is an urgent problem to be solved.

Summary of the invention

The main object of the present invention is to provide a method and terminal for acquiring WI-FI signal strength, which aims to solve the problem of obtaining the best WI-FI signal strength under the condition of minimum moving distance and direction.

In order to achieve the above objectives, the following technical solutions are adopted:

A method for obtaining WI-FI signal strength includes the following steps:

Obtain the WI-FI signal strength information to which the current location of the terminal is connected;

Determining, according to the obtained WI-FI signal strength information that the current location of the terminal is connected, and the WI-FI signal strength history database of the terminal, that the distance from the current location of the terminal is the smallest and the signal strength is better than the current terminal. The historical location of the WI-FI signal strength at the location.

Optionally, the determining, according to the WI-FI signal strength information that is connected to the current location of the terminal, and the WI-FI signal strength history database of the terminal, determining that the location of the current location of the terminal is the smallest and better than the The steps of the historical location of the WI-FI signal strength of the current location of the terminal include:

Comparing the WI-FI signal strength of the current location of the terminal with the WI-FI signal strength of the historical location of the terminal recorded in the WI-FI signal strength history database of the terminal, and screening out the terminal a record of the WI-FI signal strength at the current location;

Comparing the location information of all the searched records to find a historical position of the WI-FI signal strength that is the smallest displacement from the current location of the terminal and is better than the current location of the terminal;

Comparing the current location of the terminal with the historical position of the WI-FI signal strength that is less than the current position of the terminal and is better than the current location of the terminal, and calculating the current required direction of the terminal and distance.

Optionally, the determining, according to the WI-FI signal strength information that is connected to the current location of the terminal, and the WI-FI signal strength history database of the terminal, determining that the location of the current location of the terminal is the smallest and better than the After the step of the historical location of the WI-FI signal strength of the current location of the terminal, the method further includes:

The terminal is notified to move to the historical location according to a direction and a distance that the terminal currently needs to move.

Optionally, after the step of acquiring the WI-FI signal strength information to which the current location of the terminal is connected, the method further includes:

The WI-FI signal strength information to which the location information of the current location of the terminal and the obtained current location of the terminal are connected is saved as the same record in the WI-FI signal strength history database of the terminal.

Optionally, the location information includes: coordinates, height, and/or magnetic field angle.

Optionally, the determining, according to the WI-FI signal strength information that is connected to the current location of the terminal, and the WI-FI signal strength history database of the terminal, determining that the location of the current location of the terminal is the smallest and better than the After the step of the historical location of the WI-FI signal strength of the current location of the terminal, the method further includes:

And determining, according to the determined distance, that the current position of the terminal is the smallest and better than the historical position of the WI-FI signal strength of the current location of the terminal, prompting the terminal to adjust the current location.

A terminal includes a positioning module and a comparison module, wherein:

The positioning module is configured to: obtain WI-FI signal strength information to which the current location of the terminal is connected;

The comparison module is configured to: according to the obtained WI-FI signal strength information that is connected to the current location of the terminal, and the WI-FI signal strength history database of the terminal, determine that the position of the terminal is the smallest The signal strength is better than the historical position of the WI-FI signal strength at which the terminal is currently located.

Optionally, the comparison module includes a signal strength comparison unit, a displacement comparison unit, and a calculation unit, wherein

The signal strength comparison unit is configured to: perform WI-FI signal strength of the current location of the terminal and WI-FI signal strength of the historical position of the terminal recorded in the WI-FI signal strength history database of the terminal. Comparing, screening out a record of the WI-FI signal strength better than the current location of the terminal;

The displacement comparison unit is configured to: compare position information of all the searched records, and find a historical position of the WI-FI signal strength that is the smallest displacement from the current position of the terminal and is better than the current location of the terminal;

The calculating unit is configured to: compare the current location of the terminal with a historical position of the WI-FI signal strength that is smaller than the current location of the terminal and is better than the current location of the terminal, and calculate the terminal. The direction and distance of the current movement required.

Optionally, the terminal further includes a prompting module, where:

The prompting module is configured to prompt to move to the historical position according to a direction and a distance that the terminal currently needs to move.

Optionally, the positioning module is further configured to:

The WI-FI signal strength information to which the location information of the current location of the terminal and the obtained current location of the terminal are connected is saved as the same record in the WI-FI signal strength history database of the terminal.

Optionally, the location information includes coordinates, heights, and/or magnetic field angles.

Optionally, the terminal further includes a prompting module, where:

The prompting module is configured to: according to the determined distance, the current position of the terminal is the smallest and better than the historical position of the WI-FI signal strength of the current location of the terminal, and prompt to adjust the current location.

A computer program comprising program instructions that, when executed by a terminal, cause the terminal to perform any of the above methods of acquiring WI-FI signal strength.

A carrier carrying the computer program.

The method for obtaining the WI-FI signal strength provided by the technical solution of the present invention obtains the WI-FI signal strength information that is connected to the current location of the terminal; the WI-FI signal strength information and the signal strength that are connected according to the current location of the obtained terminal. The historical database determines the historical position of the WI-FI signal strength that is the smallest displacement from the current location of the terminal and is better than the current location of the terminal. The invention allows the user to obtain better WI-FI signal strength with minimal displacement, so that the user has a faster and more stable online experience.

BRIEF abstract

1 is a schematic flow chart of a first embodiment of a method for acquiring WI-FI signal strength according to the present invention;

2 is a WI-FI signal strength information and a signal strength history database connected according to the obtained current location of the terminal, and the WI-FI signal with the smallest displacement from the current location of the terminal and better than the current location of the terminal is determined. Schematic diagram of the refinement of the steps of the historical position of the intensity;

3 is a schematic flow chart of a second embodiment of a method for acquiring WI-FI signal strength according to the present invention;

4 is a schematic diagram of functional modules of a first embodiment of a terminal according to the present invention;

5 is a schematic diagram of a first functional module of the comparison module of FIG. 4;

FIG. 6 is a schematic diagram of functional modules of a second embodiment of a terminal according to the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

Preferred embodiment of the invention

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

1 is a schematic flowchart of a first embodiment of a method for acquiring WI-FI signal strength according to the present invention. In the first embodiment, the method for acquiring WI-FI signal strength includes the following steps:

Step S100: Obtain WI-FI signal strength information that is connected to the current location of the terminal.

The terminal obtains the WI-FI signal strength information that is connected to the current location of the terminal, and stores the WI-FI signal strength information that is connected to the current location of the terminal and the current location of the obtained terminal as the same record in the signal strength history database. The position information includes coordinates and heights, and may also include a magnetic field angle. The coordinates may be geographic coordinates or geodetic coordinates, and the user's location information may be obtained by GPS (Global Positioning System) or by other wireless networks, such as Beidou navigation system, ZigBee (Chinese name is Zifeng), RFID (Radio Frequency Identification) and Bluetooth (Chinese name is Bluetooth). Among them, the GPS ranging can measure the specific position of the receiver by measuring the distance between the satellite at the known location and the user terminal, and then synthesizing the data of multiple satellites. In this embodiment, the latitude and longitude result of the location of the mobile phone may be obtained according to the data source generated by the interaction between the signal between the terminal and the base station, thereby finding the geographical location where the mobile phone is located. The RFID antenna can also receive the reference point label signal in the predetermined area, read the received signal strength value between the reference point label and the mobile phone; calculate the coordinates of the user location via the baseband chip, and transmit the location coordinates to the cloud server through the wireless network, The receiving unit receives the latest location information transmitted by the cloud server and displays it on the display screen to obtain the current location of the terminal. The terminal invokes the system interface to obtain the current signal strength of the connected AP, and performs intensity display by using the signal strength indication value, for example, the WI-FI signal is strong. The degree information can be displayed by using the signal strength display icon, and the signal strength is displayed by the signal strength of the umbrella icon of the signal intensity display indicating the fullness between the cells. The WI-FI signal strength information can also be represented by a specific value. The WI-FI signal strength value is usually between -20 and -80, and the unit is dBm. Such as: -67dBm. Where dBm represents the value of the absolute value of the power, which is a ratio based on the power of 1 mW. The calculation formula is: dBm=10log (power value / 1mw). If the power P is 1 mw, it is converted to dBm and then 0 dBm. For a power of 40 W, the value converted in dBm units should be: 10 log (40 W / 1 mw) = 10 log (40000) = 10 log 4 + 10 log 10000 = 46 dBm.

Step S200: Determine, according to the acquired WI-FI signal strength information and the signal strength history database of the current location of the terminal, a historical position of the WI-FI signal strength that is the smallest displacement from the terminal and is better than the current location of the terminal.

In order to obtain a better WI-FI signal, the terminal compares the WI-FI signal strength information of the current location of the terminal with the peripheral WI-FI signal strength information in the signal strength history database, where the signal strength history database is pre-stored with the terminal. WI-FI intensity information of the current location and the surrounding location, the WI-FI data in the signal strength history database can be updated in real time according to the location change of the newly added or deleted AP or AP, and the unique ID number and AP of the AP are The location and signal strength information are combined into a record and saved to the signal strength history database. The terminal searches for the WI-FI and WI-FI strength information of the current peripheral location of the terminal according to the WI-FI signal strength of the current location of the terminal, and finds the WI-FI signal that is greater than the current location of the terminal, and The WI-FI signal larger than the current location of the terminal is compared with the WI-FI signal of the current location of the terminal, and the best record with the strongest WI-FI signal strength and the smallest displacement is found, thereby obtaining the displacement of the current position of the terminal. The historical position of the WI-FI signal strength that is the smallest and better than the current location of the terminal.

The method for obtaining the WI-FI signal strength provided by this embodiment allows the user to obtain a better WI-FI signal strength with a minimum displacement, so that the user has a faster and more stable online experience.

As shown in FIG. 2, FIG. 2 is a schematic diagram of a refinement process of step S200 in FIG. 1. In this embodiment, the step S200 includes:

Step S210: Comparing the WI-FI signal strength of the current location of the terminal with the WI-FI signal strength of the peripheral location of the terminal recorded in the signal strength history database, and filtering out the current terminal Record of the WI-FI signal strength at the location.

The terminal compares and compares the WI-FI signal strength of the current location of the terminal with the WI-FI signal strength of the terminal peripheral location recorded in the signal strength history database to search for and select a WI-FI signal that is better than the current location of the terminal. Record of strength.

Step S220: Compare the searched WI-FI signal strength records that are better than the current location of the terminal and the corresponding location information one by one, and find the WI-FI that is the smallest displacement from the current location of the terminal and is better than the current location of the terminal. The historical location of the signal strength.

The terminal compares the WI-FI signal that is better than the current location of the terminal and the corresponding location information to the signal strength history database signal strength history database one by one, and finds the minimum displacement of the current location of the terminal in the signal strength history database. The historical position of the WI-FI signal strength at the current location of the terminal.

Step S230: The location of the terminal is compared with the position corresponding to the record with the smallest displacement of the terminal and the WI-FI signal strength is optimal, and the direction and distance of the current required movement of the terminal are calculated.

The terminal compares the current location of the terminal with the historical position terminal of the WI-FI signal strength of the terminal where the current position of the terminal stored in the signal strength history database is minimized and is better than the current location of the terminal, and is calculated and calculated. The direction and distance at which the terminal is currently moving.

The method for obtaining the WI-FI signal strength provided by this embodiment obtains the best record with the strongest WI-FI signal strength and the smallest displacement, and compares with the current location of the terminal, so that the user obtains better with minimum displacement. WI-FI signal strength allows users to have a faster and more stable online experience.

As shown in FIG. 3, FIG. 3 is a schematic flowchart of a second embodiment of a method for acquiring WI-FI signal strength according to the present invention. On the basis of the first embodiment, the step S200 includes:

Step S300, prompting the terminal to move the position or adjust the posture according to the determined historical position of the distance position of the terminal that is the smallest and better than the current position of the WI-FI signal strength of the current location of the terminal.

The terminal obtains the distance and direction of the terminal to move according to the historical position of the WI-FI signal strength that is the smallest displacement of the terminal and is better than the current location of the terminal, and prompts the position or adjustment of the movement through the display or sound of the terminal. The gesture may also be a reminder to the user by moving the arrow on the display interface.

The method for obtaining the WI-FI signal strength provided by this embodiment is performed by means of an arrow and/or a sound. Allows users to get better WI-FI signal strength with minimal displacement, allowing users to have a faster and more stable online experience.

With reference to FIG. 4, FIG. 4 is a schematic diagram of a function module of a first embodiment of the terminal according to the present invention. In the first embodiment, the terminal includes:

The locating module 10 acquires WI-FI signal strength information to which the current location of the terminal is connected;

The comparison module 20 is configured to: according to the acquired WI-FI signal strength information and the signal strength history database of the current location of the terminal, determine a WI-FI signal that has the smallest displacement from the current location of the terminal and is better than the current location of the terminal. The historical location of the intensity.

The positioning module 10 of the terminal acquires the WI-FI signal strength information to which the current location of the terminal is connected, and saves the WI-FI signal strength information that is connected to the current location of the terminal and the current location of the obtained terminal as the same record to the signal strength. In the historical database. The position information includes coordinates and heights, and may also include a magnetic field angle. The coordinates may be geographic coordinates or geodetic coordinates, and the user's location information may be obtained by GPS (Global Positioning System) or by other wireless networks, such as Beidou navigation system, ZigBee (Chinese name is Zifeng), RFID (Radio Frequency Identification) and Bluetooth (Chinese name is Bluetooth). Among them, the GPS ranging can measure the specific position of the receiver by measuring the distance between the satellite at the known location and the user terminal, and then synthesizing the data of multiple satellites. In this embodiment, the latitude and longitude result of the location of the mobile phone may be obtained according to the data source generated by the interaction between the signal between the terminal and the base station, thereby finding the geographical location where the mobile phone is located. The RFID antenna can also receive the reference point label signal in the predetermined area, read the received signal strength value between the reference point label and the mobile phone; calculate the coordinates of the user location via the baseband chip, and transmit the location coordinates to the cloud server through the wireless network, The receiving unit receives the latest location information transmitted by the cloud server and displays it on the display screen to obtain the current location of the terminal. The terminal invokes the system interface to obtain the current signal strength of the connected AP, and performs intensity display by using the signal strength indication value. For example, the WI-FI signal strength information can be displayed by using the signal strength display icon, and the umbrella of the icon is displayed by the signal strength. The signal strength of the icon indicates the fullness between the cells to display the signal strength. The WI-FI signal strength information can also be represented by a specific value. The WI-FI signal strength value is usually between -20 and -80, and the unit is dBm. Such as: -67dBm. Where dBm represents the value of the absolute value of the power, which is a ratio based on the power of 1 mW. The calculation formula is: dBm=10log (work Rate / 1mw). If the power P is 1 mw, it is converted to dBm and then 0 dBm. For a power of 40 W, the value converted in dBm units should be: 10 log (40 W / 1 mw) = 10 log (40000) = 10 log 4 + 10 log 10000 = 46 dBm.

In order to obtain a better WI-FI signal, the comparison module 20 of the terminal compares the WI-FI signal strength information of the current location of the terminal with the peripheral WI-FI signal strength information in the signal strength history database, the signal strength history. The database pre-stores the WI-FI strength information of the current location of the terminal and the surrounding location. The WI-FI data in the signal strength history database can be updated in real time according to the change of the location of the added or deleted AP or AP, and the AP is unique. The ID number, AP location and signal strength information are combined into one record and saved in the signal strength history database. The terminal searches for the WI-FI and WI-FI strength information of the current peripheral location of the terminal according to the WI-FI signal strength of the current location of the terminal, and finds the WI-FI signal that is greater than the current location of the terminal, and The WI-FI signal larger than the current location of the terminal is compared with the WI-FI signal of the current location of the terminal, and the best record with the strongest WI-FI signal strength and the smallest displacement is found, thereby obtaining the displacement of the current position of the terminal. The historical position of the WI-FI signal strength that is the smallest and better than the current location of the terminal.

The terminal provided in this embodiment allows the user to obtain a better WI-FI signal strength with a minimum displacement, so that the user has a faster and more stable online experience.

As shown in FIG. 5, FIG. 5 is a schematic structural diagram of the comparison module in FIG. 4. In this embodiment, the comparison module 20 includes:

The signal strength comparison unit 21 is configured to: compare the WI-FI signal strength of the current location of the terminal with the WI-FI signal strength of the peripheral location recorded in the signal strength history database, and filter out the WI that is better than the current location of the terminal. - recording of FI signal strength;

The displacement comparison unit 22 is configured to: compare the searched WI-FI signal and the corresponding position information of the current location of the terminal with the signal strength history database one by one, and find the minimum displacement and WI-FI signal from the terminal. Optimal intensity record;

The calculating unit 23 is configured to compare the position of the terminal with the position corresponding to the record with the smallest displacement of the terminal and the WI-FI signal strength, and calculate the direction and distance of the current required movement of the terminal.

The signal strength comparison unit 21 of the terminal passes the WI-FI signal strength of the current location of the terminal. The WI-FI signal strength of the terminal peripheral location recorded in the signal strength history database is compared to search for and filter out a record that is better than the WI-FI signal strength of the current location of the terminal.

The displacement comparison unit 22 of the terminal compares the searched WI-FI signal that is better than the current location of the terminal and the corresponding position information to the signal strength history database signal strength history database one by one, and finds the current location of the distance terminal in the signal strength history database. The positional displacement is the smallest and better than the historical position of the WI-FI signal strength at the current location of the terminal.

The computing unit 23 of the terminal compares the current location of the terminal with the historical location terminal of the WI-FI signal strength that is the smallest position of the distance terminal currently stored in the signal strength history database and is better than the current location of the terminal, and Through calculation, the direction and distance of the current required movement of the terminal are calculated.

The terminal provided in this embodiment obtains the best record with the strongest WI-FI signal strength and the smallest displacement, and compares with the current location of the terminal, so that the user can obtain better WI-FI signal strength with minimum displacement, so that Users have a faster and more stable online experience.

Referring to FIG. 6 , FIG. 6 is a schematic diagram of a function module of a second embodiment of the terminal according to the first embodiment of the present invention.

The prompting module 30 is configured to: prompt the terminal to move the position or adjust the posture according to the determined historical position of the terminal where the position of the terminal is the smallest and better than the historical position of the WI-FI signal strength of the current location of the terminal.

The prompting module 30 of the terminal obtains the distance and direction required for the terminal to move according to the historical position of the WI-FI signal strength that is the smallest displacement of the terminal and is better than the current location of the terminal, and prompts the movement through the display or sound of the terminal. The position or the adjusted posture may also be a reminder to the user by moving the arrow on the display interface.

The terminal provided in this embodiment allows the user to obtain a better WI-FI signal strength with a minimum displacement by means of an arrow and/or a sound, so that the user has a faster and more stable online experience.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Industrial applicability

The method for obtaining the WI-FI signal strength provided by the technical solution of the present invention obtains the WI-FI signal strength information that is connected to the current location of the terminal; the WI-FI signal strength information and the signal strength that are connected according to the current location of the obtained terminal. The historical database determines the historical position of the WI-FI signal strength that is the smallest displacement from the current location of the terminal and is better than the current location of the terminal. The invention allows the user to obtain better WI-FI signal strength with minimal displacement, so that the user has a faster and more stable online experience. Therefore, the present invention has strong industrial applicability.

Claims (14)

A method for obtaining WI-FI signal strength includes the following steps: Obtain the WI-FI signal strength information to which the current location of the terminal is connected; Determining, according to the obtained WI-FI signal strength information that the current location of the terminal is connected, and the WI-FI signal strength history database of the terminal, that the distance from the current location of the terminal is the smallest and the signal strength is better than the current terminal. The historical location of the WI-FI signal strength at the location. The method for acquiring WI-FI signal strength according to claim 1, wherein the determining is based on the WI-FI signal strength information to which the acquired terminal is currently located and the WI-FI signal strength history database of the terminal. The step of removing the historical position of the WI-FI signal strength that is the smallest displacement of the current location of the terminal and is better than the current location of the terminal includes: Comparing the WI-FI signal strength of the current location of the terminal with the WI-FI signal strength of the historical location of the terminal recorded in the WI-FI signal strength history database of the terminal, and screening out the terminal a record of the WI-FI signal strength at the current location; Comparing the location information of all the searched records to find a historical position of the WI-FI signal strength that is the smallest displacement from the current location of the terminal and is better than the current location of the terminal; Comparing the current location of the terminal with the historical position of the WI-FI signal strength that is less than the current position of the terminal and is better than the current location of the terminal, and calculating the current required direction of the terminal and distance. The method for acquiring WI-FI signal strength according to claim 2, wherein the determining is based on the WI-FI signal strength information to which the obtained terminal is currently located and the WI-FI signal strength history database of the terminal. After the step of removing the historical position of the WI-FI signal strength that is the smallest position of the terminal and is better than the current location of the terminal, the method further includes: The terminal is notified to move to the historical location according to a direction and a distance that the terminal currently needs to move. The method for acquiring WI-FI signal strength according to any one of claims 1 to 3, wherein after the step of acquiring WI-FI signal strength information to which the terminal is currently located, the method further includes : The WI-FI signal strength information to which the location information of the current location of the terminal and the obtained current location of the terminal are connected is saved as the same record in the WI-FI signal strength history database of the terminal. A method of acquiring WI-FI signal strength according to any one of claims 1 to 3, wherein the position information comprises: coordinates, height and/or magnetic field angle. The method for acquiring WI-FI signal strength according to claim 1 or 2, wherein the WI-FI signal strength information connected to the current location of the acquired terminal and the WI-FI signal strength history database of the terminal are obtained. After the step of determining the historical position of the WI-FI signal strength that is the smallest displacement of the current location of the terminal and is better than the current location of the terminal, the method further includes: And determining, according to the determined distance, that the current position of the terminal is the smallest and better than the historical position of the WI-FI signal strength of the current location of the terminal, prompting the terminal to adjust the current location. A terminal includes a positioning module and a comparison module, wherein: The positioning module is configured to: obtain WI-FI signal strength information to which the current location of the terminal is connected; The comparison module is configured to: according to the obtained WI-FI signal strength information that is connected to the current location of the terminal, and the WI-FI signal strength history database of the terminal, determine that the position of the terminal is the smallest The signal strength is better than the historical position of the WI-FI signal strength at which the terminal is currently located. The terminal of claim 7, wherein the comparison module comprises a signal strength comparison unit, a displacement comparison unit, and a calculation unit, wherein The signal strength comparison unit is configured to: perform WI-FI signal strength of the current location of the terminal and WI-FI signal strength of the historical position of the terminal recorded in the WI-FI signal strength history database of the terminal. Comparing, screening out a record of the WI-FI signal strength better than the current location of the terminal; The displacement comparison unit is configured to: compare position information of all the searched records, and find a historical position of the WI-FI signal strength that is the smallest displacement from the current position of the terminal and is better than the current location of the terminal; The calculating unit is configured to: compare the current location of the terminal with a historical position of the WI-FI signal strength that is smaller than the current location of the terminal and is better than the current location of the terminal, and calculate the terminal. The direction and distance of the current movement required. The terminal of claim 8, the terminal further comprising a prompting module, wherein: The prompting module is configured to prompt a direction and a distance shift according to the current required movement of the terminal Move to the historical location. The terminal according to any one of claims 7 to 9, wherein the positioning module is further configured to: The WI-FI signal strength information to which the location information of the current location of the terminal and the obtained current location of the terminal are connected is saved as the same record in the WI-FI signal strength history database of the terminal. The terminal of any of claims 7-9, wherein the location information comprises coordinates, heights, and/or magnetic field angles. The terminal according to claim 7 or 8, wherein the terminal further comprises a prompting module, wherein: The prompting module is configured to: according to the determined distance, the current position of the terminal is the smallest and better than the historical position of the WI-FI signal strength of the current location of the terminal, and prompt to adjust the current location. A computer program comprising program instructions that, when executed by a terminal, cause the terminal to perform the method of acquiring WI-FI signal strength as claimed in any one of claims 1-6. A carrier carrying the computer program of claim 13.

Images