TWI487403B - System and method for searching wifi hotspots - Google Patents

Description

WiFi hotspot automatic search system and method

The invention relates to a WiFi hotspot automatic search system and method.

WiFi (Wireless Fidelity: commonly known as Wireless Broadband) is an enabling technology that helps users access email, web and streaming media. It provides users with wireless broadband Internet access. At the same time, it is also a fast and convenient way to get online at home, in the office or on the go. Generally speaking, WiFi is a wireless networking technology. Different from the way of connecting through the network cable, WiFi is connected by radio waves. The common device using WiFi technology is a wireless router. The effective range covered by the radio wave of the wireless router can be connected by means of WiFi connection. If the wireless router is connected with an ADSL line or other Internet access line, the wireless router is Called "WiFi hotspot".

The convergence of mobile network services and WiFi can improve the performance of mobile voice and data applications while reducing costs. Therefore, more and more communication devices now support WiFi Internet access, especially the 3G (The Third Generation) communication device. The 3G communication device with integrated WiFi function uses the WiFi network to access the WiFi hotspot. In places where there is no WiFi hotspot, the 3G network is used. At present, most users set up WiFi hotspots at home or in the office. When the 3G communication device enters the effective radiation area of the WiFi hotspot from the outside, the data connection part on the 3G communication device will automatically switch from the 3G network. Go to the WiFi network. Be realistic Now the above functions require 3G communication equipment to search for WiFi hotspots at any time. However, constantly searching for WiFi hotspots outside the range of WiFi hotspot radiation can cause 3G communication devices to lose a lot of power.

In view of the above, it is necessary to provide a WiFi hotspot automatic search system and method, which can automatically start the automatic search function of the WiFi hotspot when the 3G communication device is in the vicinity of the WiFi hotspot radiation range.

The WiFi hotspot automatic search system runs in a 3G communication device equipped with a positioning device, and a memory hotspot location correspondence table is stored in the memory of the 3G communication device, and the system includes: a reading module, which is used for 3G When the communication device is not connected to the WiFi network, the latitude and longitude of the current position of the 3G communication device is read from the communication signaling between the 3G network communication base station and the 3G communication device at regular intervals; the determining module is used for Determining, according to the read latitude and longitude information, whether the 3G communication device is currently in a first radiation area centered on any one of the WiFi hotspot location correspondence tables, and the first preset distance is a radiation radius. If the 3G communication device is located in the first radiation area, the triggering positioning device locates the 3G communication device in real time to obtain the latitude and longitude of the current position of the 3G communication device; the determining module is further configured to acquire according to the positioning device. The latitude and longitude of the current location of the 3G communication device determines whether the 3G communication device is currently in a WiFi hotspot in the WiFi hotspot location correspondence table. The second radiation area with the second predetermined distance as the radiation radius, if the 3G communication device is currently located in the second radiation area, triggering the 3G communication device to start the WiFi hotspot search function, searching for the WiFi hotspot .

The WiFi hotspot automatic search method is applied to a 3G communication device equipped with a positioning device, and a WiFi hotspot location correspondence table is stored in the memory of the 3G communication device. The method includes the following steps: (a1) when the 3G communication device is not connected to the WiFi network, the 3G communication device is read from the communication signaling between the 3G network communication base station and the 3G communication device at regular intervals. The latitude and longitude of the current location; (a2) determining, according to the read latitude and longitude information, whether the 3G communication device is currently in a wireless hotspot in the WiFi hotspot location correspondence table, with the first preset distance as the radiation In the first radiation area of the radius, if the 3G communication device is located in the first radiation area, triggering the positioning device to perform step (a3), otherwise, returning to step (a1); (a3) the positioning device is real-time Positioning the location of the 3G communication device to obtain the latitude and longitude of the current location of the 3G communication device; (a4) determining, according to the latitude and longitude of the current location of the 3G communication device acquired by the positioning device, whether the 3G communication device is currently in a The WiFi hotspot location correspondence table is centered on any one of the WiFi hotspots, and the second preset area is within the second radiation area of the radiation radius; (a5) when the 3G communication device is located in the second radiation area When the 3G communication device is triggered to start the WiFi hotspot search function, the WiFi hotspot is searched.

Compared with the prior art, the WiFi hotspot automatic search system and method locates the location of the 3G communication device through the positioning service provided by the 3G network communication base station and uses the positioning device, when the 3G communication device is close to any When a previously used WiFi hotspot is at a certain distance, the WiFi hotspot automatic search function of the 3G communication device is activated, which effectively solves the power loss caused by the continuous search of the WiFi hotspot by the 3G communication device outside the range of the WiFi hotspot radiation range. problem.

1‧‧3G communication equipment

10‧‧‧WiFi hotspot automatic search system

11‧‧‧ memory

12‧‧‧ Processor

13‧‧‧ Positioning device

101‧‧‧recording module

102‧‧‧Read module

103‧‧‧Judgement module

110‧‧‧WiFi hotspot location correspondence table

FIG. 1 is a structural diagram of an operating environment of a WiFi hotspot automatic search system according to the present invention.

2 is a schematic diagram of a WiFi hotspot location correspondence table in a preferred embodiment of the present invention.

3 is a schematic diagram of an area in which a WiFi hotspot search is automatically started in a preferred embodiment of the present invention. Figure.

4 is a flow chart of a preferred embodiment of a WiFi hotspot automatic search method according to the present invention.

As shown in FIG. 1 , it is an operating environment architecture diagram of the WiFi hotspot automatic search system of the present invention. The WiFi hotspot automatic search system 10 runs in the 3G communication device 1, and the 3G communication device 1 further includes a memory 11, a processor 12, and a positioning device 13. A memory hotspot location correspondence table 110 is stored in the memory 11 for storing information such as the location of the WiFi hotspot used by the 3G communication device 1. The positioning device 13 may be a GPS (Globe Positioning System) device.

Referring to FIG. 2, it is a schematic diagram of a WiFi hotspot location correspondence table in a preferred embodiment of the present invention. The WiFi hotspot location correspondence table 110 shows the latitude and longitude information corresponding to the plurality of WiFi hotspots used by the 3G communication device. For example, (X1, Y1) indicates that the longitude of the location where the WiFi hotspot is located is X1, and the latitude is Y1; (X2, Y2) indicates that the longitude of the location of the WiFi hotspot 2 is X2, and the latitude is Y2.

The WiFi hotspot automatic search system 10 can be installed in the memory 11, and the processor 12 controls the execution of the WiFi hotspot automatic search system 10. The WiFi hotspot automatic search system 10 includes a recording module 101, a reading module 102, and a determining module 103. The function modules described above will be described in detail below with reference to FIG. 4.

As shown in FIG. 4, it is a flowchart of a preferred embodiment of the WiFi hotspot automatic search method of the present invention.

In step S02, the recording module 101 configures the WiFi hotspot location correspondence table 110. Specifically, the method for configuring the WiFi hotspot location correspondence table 110 is: first When the 3G communication device 1 manually or automatically activates the WiFi hotspot search function and successfully searches for the WiFi hotspot, the recording module 101 triggers the positioning device 13 to locate the location of the 3G communication device 1 to obtain the 3G communication. The latitude and longitude of the location where the device 1 is located; then, the recording module 101 records the latitude and longitude acquired by the positioning device 13 as the latitude and longitude of the location of the searched WiFi hotspot, and records it in the WiFi hotspot location correspondence table 110 to complete the WiFi. The hotspot location corresponds to the configuration of the table 110. Here, since the effective range of the WiFi hotspot is generally in a small radiation area centered on the WiFi hotspot and having a radius of not more than 30 m, the latitude and longitude of the current position of the 3G communication device 1 is recorded as the searched WiFi hotspot. The latitude and longitude of the position has a small error.

The configured WiFi hotspot location correspondence table 110 can be used by the 3G communication device when it needs to switch to the WiFi network in the future. The above step S02 can be performed when the 3G communication device 1 successfully searches for a new WiFi hotspot at any time.

Step S03, when the 3G communication device 1 is not connected to the WiFi network, the reading module 102 communicates with the 3G network base station (shown as 30 in FIG. 3) and the 3G communication device 1 at regular intervals. The latitude and longitude of the current location of the 3G communication device 1 (such as the latitude and longitude information contained in the paging signaling) is read in the communication signaling. At present, most wireless network base stations provide positioning services, especially CDMA technology-based WCDMA, CDMA2000 and TD-SCDMA and other 3G communication network base stations provide positioning services. The 3G network communication base station can locate the 3G communication device 1 by means of OTDOA (Observed Time Difference Of Arrival). The positioning mode of the OTDOA is to calculate the position of the 3G communication device 1 by observing the time difference of the signals sent by the 3G communication device 1 received by the plurality of base stations. The positioning accuracy of the OTDOA positioning mode can reach several tens of meters. Error, but the position of the 3G communication device 1 can be roughly located. Here, if the positioning device 13 is used to accurately locate the position of the 3G communication device 1, the power of the positioning device 13 is wasted for a long time, so the positioning service of the 3G network communication base station is adopted first. The location of the 3G communication device 1 is roughly positioned. When the location of the 3G communication device 1 is close to a certain distance of the WiFi hotspot in the WiFi hotspot location correspondence table 110, such as 100 m, the positioning device 13 is activated. The position of the 3G communication device 1 is accurately positioned.

In step S04, the determining module 103 determines, according to the latitude and longitude information read by the reading module 102, whether the 3G communication device 1 is currently in a WiFi hotspot in the WiFi hotspot location correspondence table 110. Centering, in the first radiation area with the first predetermined distance as the radiation radius (as shown in FIG. 3), if the 3G communication device 1 is in the first radiation area, triggering the positioning device 13 to perform the step S05, otherwise, returns to step S03. The first preset distance may be set according to the positioning accuracy of the 3G network communication base station. For example, if the positioning accuracy of the 3G network communication base station adopts the OTDOA positioning mode is several tens of meters, the first preset may be set. Set the distance to 100m.

In step S05, the positioning device 13 locates the 3G communication device 1 in real time to obtain the latitude and longitude of the current position of the 3G communication device 1.

In step S06, the determining module 103 determines, according to the latitude and longitude of the current location of the 3G communication device 1 acquired by the positioning device 13, whether the 3G communication device 1 is currently in a WiFi state in the WiFi hotspot location correspondence table 110. The hotspot is centered, and the second predetermined distance is the second radiation area of the radiation radius (as shown in FIG. 3). If the 3G communication device 1 is located in the second radiation area, the 3G communication device is triggered. 1 Go to step S09, otherwise go to step S07. The second preset distance may be according to WiFi The effective radiation range of the hot spot is set. For example, when the effective radiation range of the WiFi hotspot is 30 m, the second preset distance can be set to 30 m or 40 m.

In step S07, the determining module 103 determines whether the 3G communication device 1 is still in the first radiation area according to the latitude and longitude of the current position of the 3G communication device 1 acquired by the positioning device 13, if the 3G communication device 1 remains If it is in the first radiation area, the process returns to step S05. Otherwise, the 3G communication device 1 is triggered to perform step S08.

In step S08, the 3G communication device 1 turns off the positioning device 13, and ends the flow.

In step S09, the 3G communication device 1 starts the WiFi hotspot search function to search for the WiFi hotspot.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application.

1‧‧3G communication equipment

10‧‧‧WiFi hotspot automatic search system

11‧‧‧ memory

12‧‧‧ Processor

13‧‧‧ Positioning device

101‧‧‧recording module

102‧‧‧Read module

103‧‧‧Judgement module

110‧‧‧WiFi hotspot location correspondence table

Claims (6)

A WiFi hotspot automatic search method is applied to a 3G communication device equipped with a positioning device, wherein a memory hotspot location correspondence table is stored in the memory of the 3G communication device, the method comprising the steps of: (a1) when the 3G communication device is not connected When the WiFi network is connected, the latitude and longitude of the current location of the 3G communication device is read from the communication signaling between the 3G network communication base station and the 3G communication device at regular intervals; (a2) according to the read latitude and longitude The information is determined whether the 3G communication device is currently in a first radiation area centered on any one of the WiFi hotspot location correspondence tables, and the first preset distance is a radiation radius, if the 3G communication device is In the first radiation area, the positioning device is triggered to perform step (a3), otherwise, return to step (a1); (a3) the positioning device locates the position of the 3G communication device in real time to obtain the 3G communication device. The latitude and longitude of the current position; (a4) determining, according to the latitude and longitude of the current position of the 3G communication device acquired by the positioning device, whether the 3G communication device is currently in a first radiation area The corresponding WiFi hotspot is centered, and the second preset distance is the second radiation area of the radiation radius, wherein the second preset distance is smaller than the first preset distance; (a5) when the 3G communication device is in the When the second radiation area is within, the 3G communication device is triggered to initiate a WiFi hotspot search function to search for the WiFi hotspot. The method for automatically searching for a WiFi hotspot according to claim 1, wherein the method further comprises the step of: (a6) obtaining the 3G according to the positioning device when the 3G communication device is not in the second radiation area; The latitude and longitude of the current location of the communication device determines whether the 3G communication device is still in In the first radiation area, if the 3G communication device is still in the first radiation area, return to step (a3); otherwise, trigger the 3G communication device to perform step (a7); (a7) 3G communication device The positioning device is turned off. The method for configuring the WiFi hotspot location correspondence table, the step of configuring the WiFi hotspot location correspondence table, before the step (a1), further includes the step of configuring the WiFi hotspot location correspondence table. The method includes: when the 3G communication device starts the WiFi hotspot search function and successfully searches for the WiFi hotspot, triggers the positioning device to acquire the latitude and longitude of the location where the 3G communication device is located; and uses the obtained latitude and longitude as the latitude and longitude of the location of the searched WiFi hotspot And recorded in the WiFi hotspot location correspondence table. A WiFi hotspot automatic search system runs in a 3G communication device equipped with a positioning device, and a memory hotspot location correspondence table is stored in the memory of the 3G communication device, and the system includes: a reading module, which is used for 3G communication When the device is not connected to the WiFi network, the latitude and longitude of the current position of the 3G communication device is read from the communication signaling between the 3G network communication base station and the 3G communication device at regular intervals; the determining module is configured according to The read latitude and longitude information determines whether the 3G communication device is currently in a first radiation area centered on any one of the WiFi hotspot location correspondence tables, and the first preset distance is a radiation radius. The 3G communication device is located in the first radiation area, and the triggering positioning device performs positioning on the 3G communication device in real time to obtain the latitude and longitude of the current position of the 3G communication device; and the determining module is further configured to acquire according to the positioning device. The latitude and longitude of the current position of the 3G communication device determines whether the 3G communication device is currently centered on a WiFi hotspot corresponding to the first radiation area, Two radiation predetermined distance within a second region of the radiation radius, wherein the second predetermined distance being less than a first predetermined distance; 3G communication if the device is currently in the second web Within the shooting area, the 3G communication device is triggered to initiate a WiFi hotspot search function to search for the WiFi hotspot. The WiFi hotspot automatic search system according to claim 4, wherein the determining module is further configured to determine, according to the latitude and longitude of the current location of the 3G communication device acquired by the positioning device, that the 3G communication device is not in the In the second radiation area, determining whether the 3G communication device is still in the first radiation area according to the latitude and longitude of the current position, and if the 3G communication device is not in the first radiation area, triggering the 3G The communication device turns off the positioning device. For example, the WiFi hotspot automatic search system described in claim 4, the system further includes: a recording module, configured to trigger the positioning device to acquire when the 3G communication device starts the WiFi hotspot search function and successfully searches for the WiFi hotspot The latitude and longitude of the location where the 3G communication device is located, and the obtained latitude and longitude as the latitude and longitude of the location of the searched WiFi hotspot is recorded in the WiFi hotspot location correspondence table.