CN102984812A - Method for connecting terminal with wireless local area network (WLAN) and terminal - Google Patents

Abstract

The present invention provides a method for a terminal to connect to a wireless local area network and the terminal, wherein the method includes: searching for the connection of the current cellular network cell from the corresponding relationship between the recorded cellular network cell and the wireless local area network site that the cellular network cell can connect to; If you find a wireless LAN site that can be connected, turn on the wireless LAN function and connect to the wireless LAN site. The invention avoids the unnecessary hotspot scanning operation existing in the repeated handover of the terminal from the cellular network cell to the wireless local area network site.

Description

A method and a terminal for connecting a terminal to a wireless local area network

technical field

The invention relates to the field of wireless local area network connection, in particular to a method for a terminal to connect to a wireless local area network and a terminal.

Background technique

Worldwide, the evolution and successful civil deployment of WLANs has created a need to integrate WLANs with mobile cellular networks. The main purpose of this integration is to develop a new mobile data network, so that it can support ubiquitous data services at a high data rate in hotspot areas, and at the same time reduce the pressure of data traffic brought by a large number of data services to the mobile cellular network.

But for now, the terminal in the mobile cellular network usually runs the application program installed on the terminal by the user, uses the data service, and generates data traffic, which triggers the terminal monitoring to turn on the wireless LAN function, scan the wireless LAN hotspot, and connect to the scanning network. to the wireless LAN hotspot. When the user needs to use the WLAN function again at the same location next time, the hotspot scan needs to be performed again, which not only brings unnecessary battery consumption to the terminal, but also causes the user to connect to the hotspot delay, which is not conducive to user experience.

Contents of the invention

The present invention provides a method for a terminal to connect to a wireless local area network and the terminal to solve the technical problem of how to reduce unnecessary hotspot scanning that exists when a user switches from a cellular network to a WLAN network.

In order to solve the above technical problems, the present invention provides a method for a terminal to connect to a wireless local area network, the method comprising the following steps:

From the corresponding relationship between the recorded cellular network cell and the wireless local area network site that the cellular network cell can connect to, find the wireless local area network site that the current cellular network cell can connect to;

If you find a wireless LAN site that can be connected, turn on the wireless LAN function and connect to the wireless LAN site.

further,

The corresponding relationship between the cellular network cell and the wireless local area network site that the cellular network cell can connect to is recorded by the following method:

When the terminal is connected to a wireless local area network site, and the corresponding relationship between the current cellular network cell and the wireless local area network site being connected is not recorded, the corresponding relationship is recorded;

as well as,

When the terminal is connected to a wireless local area network site and detects that the cellular network cell where it is located has changed, but the corresponding relationship between the changed cellular network cell and the connected wireless local area network site is not recorded, the corresponding relationship is recorded.

Further, the method also includes:

After connecting to the wireless LAN site, close the data transmission function of the current cellular network cell.

Further, the method also includes:

After connecting to the wireless LAN site, if it is detected that the network signal strength of the wireless LAN site being connected is lower than the rated value; or it is detected that the packet domain traffic generated by the terminal does not exceed the rated value F within a specified period of time, it will be closed Wireless LAN function, transfer packet domain traffic generated by cellular network transmission.

In order to solve the above technical problems, the present invention also provides a terminal connected to a wireless local area network, the terminal includes a recording module, a wireless local area network site search module and a wireless local area network connection module, wherein,

The recording module is used to record the corresponding relationship between the cellular network cell and the wireless LAN site that the cellular network cell can connect to;

The wireless local area network site search module is used to search for wireless local area network sites that can be connected to the current cellular network cell from the recording module, and send the found wireless local area network sites to the wireless local area network connection module;

The wireless local area network connection module is used to enable the wireless local area network function and connect to the found wireless local area network site.

Further, the recording module is used to record the corresponding relationship between the cellular network cell and the wireless local area network site that the cellular network cell can connect to, including:

The recording module is used to record the corresponding relationship between the current cellular network cell and the connected wireless local area network site when the terminal is connected to the wireless local area network site; and, when the terminal is connected to the wireless local area network site , and it is detected that the cell of the cellular network where it is located has changed, but the corresponding relationship between the changed cellular network cell and the connected WLAN site is not recorded, and the corresponding relationship is recorded.

Further, the terminal also includes a cellular network cell connection module,

The cellular network cell connection module is configured to close the data transmission function of the cellular network cell where the terminal is currently located after learning from the wireless LAN connection module that the terminal is connected to a wireless LAN site.

further,

The wireless local area network connection module is also used to detect that the network signal strength of the wireless local area network site being connected is lower than the rated value after the terminal is connected to the wireless local area network site; domain flow does not exceed the rated value F, then close the wireless local area network function, and notify the cellular network cell connection module;

The cellular network cell connection module is configured to transmit the packet domain traffic generated by the terminal after receiving the notification from the wireless local area network connection module

In the above technical solution, the terminal records the corresponding relationship between the cellular network cell and its connectable WLAN site, so that the terminal can directly switch from the cellular network cell to the WLAN site when the connectable WLAN site of the cell is clear. Switch to the target WLAN site, no need to scan for hotspots again.

Description of drawings

FIG. 1 is a flowchart of a method for connecting a terminal to a wireless local area network in this embodiment;

FIG. 2 is a module diagram of a terminal connected to a wireless local area network in this embodiment.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

FIG. 1 is a flowchart of a method for connecting a terminal to a wireless local area network in this embodiment.

S101 process starts;

S102 from the corresponding relationship between the recorded cellular network cell and the wireless LAN site that the cellular network cell can connect to, search for the wireless LAN site that the current cellular network cell can connect to; if you find a connectable wireless LAN site, go to step S103; otherwise, go to step S103 S104;

The corresponding relationship between the cellular network cell and the wireless local area network site that the cellular network cell can connect to is recorded by the following method:

When the terminal connects to a wireless LAN site, and does not record the corresponding relationship between the current cellular network cell and the connected wireless LAN site, record the corresponding relationship; and, when the terminal connects to the wireless LAN site, and detects the cellular network If the cell changes, but there is no record of the corresponding relationship between the changed cellular network cell and the wireless LAN site being connected, record the corresponding relationship;

S103 Turn on the wireless local area network function, connect to the wireless local area network site, and execute step S105;

S104 waits for the user to run the application program installed on the terminal, when the application program generates data traffic, triggers the terminal monitoring to enable the wireless LAN function, scans the wireless LAN hotspot, and connects to the scanned wireless LAN hotspot;

The process of S105 ends.

In the above embodiment, after the terminal is connected to the WLAN site, the data transmission function of the current cellular network cell can be turned off, and the Wi-Fi link alone completes the packet domain traffic generated by the foreground application to achieve the purpose of power saving;

In the above-mentioned embodiment, after the terminal is connected to the WLAN site, the terminal can still continue to judge whether the network signal strength of the currently connected WLAN site is lower than the rated value, and if it is lower than the rated value, the WLAN function is turned off, and the cellular The packet domain traffic generated by network transmission; or it can be judged whether the packet domain traffic generated by the foreground application program does not exceed the rated value F within a specified period of time. If it does not exceed the rated value F, the wireless LAN function is turned off, and the cellular network Packet domain traffic generated by transmission; to avoid unnecessary power consumption for the terminal by turning on the wireless LAN when the signal quality of the wireless LAN is poor or the amount of data to be transmitted by the wireless LAN is small.

The above embodiment will be further described in detail below by taking the UE connecting from the cellular network to the Wi-Fi network as an example.

Step 1, the UE enters cell A of the cellular network, and detects that it has not recorded the corresponding relationship between cell A and the Wi-Fi stations that can be connected to the cell A; the UE waits for the user to start the first application program, and generates cellular network packet domain traffic;

Step 2, the UE turns on the Wi-Fi switch, initiates a hotspot scan, and scans a trusted access point signal;

Step 3, the UE continues to judge whether the strength value of the trusted access point signal exceeds the threshold Y, if so, execute step 5; otherwise, execute step 4;

Step 4, turn off the Wi-Fi switch, and start the timer, when the time t arrives, execute step 3;

Step 5, UE initiates a connection request to the trusted access point, and judges whether the connection is successful, if the connection is successful, execute step 7; otherwise, execute step 6;

Step 6, determine whether n attempts have been made, if the number of attempts n is not reached, continue to step 5; if the number of attempts n is reached, turn off the Wi-Fi switch, and the process ends;

Step 7, the UE creates a Wi-Fi link, and switches the generated cellular network packet domain traffic to the Wi-Fi link; at the same time, closes the data transmission function with cell A;

Step 8, the UE obtains the location information LAC(A) and CID(A) of the current cellular network, and the currently accessed Wi-Fi access point identifier SSID1, and uses LAC(A)+CID(A) and SSID1 as a set The group mapping relationship is recorded in the hotspot cell mapping table stored by the UE;

Step 9, when the UE is connected to Wi-Fi, a cell handover occurs and switches to cell B; according to the common knowledge in the field, when the cellular network and the Wi-Fi network are available to the UE at the same time, the UE prefers Wi-Fi network, so the UE continues to transmit data over the Wi-Fi network;

The UE searches the hotspot cell mapping table for the Wi-Fi access point identifier corresponding to the location information LAC(B) and CID(B) of cell B. If the corresponding Wi-Fi access point identifier is not found, the LAC(B )+CID(B) and SSID1 are recorded as a set of mapping relationships in the hotspot cell mapping table stored in the UE;

Step 10, when the UE is connected to Wi-Fi, continue to judge whether the network signal strength of the currently connected Wi-Fi access point is lower than the rated value, if it is lower than the rated value, go to step 13; otherwise go to step 11;

Step 11, judging whether the packet domain traffic generated by the first application program does not exceed the rated value F within a specified time period, if not, perform step 13; otherwise, perform step 12;

Step 12, after a period of time, continue to execute step 10;

Step 13, turn off the Wi-Fi network switch, restore the data transmission function between the UE and the cell B, and the packet domain traffic generated by the first application program is transmitted by the cell B;

Step 14, after a period of time, the UE still located in cell B finds the Wi-Fi access point identifier SSID1 corresponding to the location information LAC(B) and CID(B) of cell B in the hotspot cell mapping table;

Step 15, UE turns on the Wi-Fi switch again and connects to SSID1;

Step 16, the UE continues to move to cell C, and the UE finds the Wi-Fi access point identifier SSID2 corresponding to the location information LAC(C) and CID(C) of cell C in the hotspot cell mapping table;

Step 17, UE connects to SSID2.

FIG. 2 is a module diagram of a terminal connected to a wireless local area network in this embodiment.

The terminal includes a recording module, a wireless local area network site search module and a wireless local area network connection module, wherein,

A recording module, configured to record the corresponding relationship between a cellular network cell and a wireless local area network site that the cellular network cell can connect to;

The recording module can be used to record the corresponding relationship between the current cellular network cell and the connected wireless local area network site when the terminal is connected to the wireless local area network site; and, when the terminal is connected to the wireless local area network site, And detect that the cellular network cell changes, but does not record the corresponding relationship between the changed cellular network cell and the wireless local area network site being connected, then record the corresponding relationship;

A wireless local area network site search module, used to search for a wireless local area network site that can be connected to the current cellular network cell from the recording module, and send the found wireless local area network site to the wireless local area network connection module;

The wireless local area network connection module is used for enabling the wireless local area network function and connecting to the found wireless local area network site.

In other embodiments, the terminal may further include a cellular network cell connection module, configured to disable the data transmission function of the cellular network cell where the terminal is currently located after learning from the wireless local area network connection module that the terminal is connected to a wireless local area network site.

In other embodiments, the above-mentioned terminal may also include a wireless local area network connection module, which is also used to detect that the network signal strength of the wireless local area network site being connected is lower than the rated value after the terminal is connected to the wireless local area network site; Within a specified period of time, if the packet domain traffic generated by the terminal does not exceed the rated value F, the wireless local area network function is turned off, and the cellular network cell connection module is notified; at this time, the cellular network cell connection module is also used to receive the wireless local area network connection module. After the notification of the module, the packet domain traffic generated by the terminal is transmitted.

Those skilled in the art can understand that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a magnetic disk or an optical disk, and the like. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiments can be implemented in the form of hardware, or can be implemented in the form of software function modules. The form is realized. The present invention is not limited to any specific combination of hardware and software.

It should be noted that the present invention can also have other various embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these Corresponding changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (8)

1. A method for a terminal to connect to a wireless local area network, characterized in that the method comprises the steps of: When looking for the wireless local area network site that the current cellular network cell can connect to from the corresponding relationship between the recorded cellular network cell and the wireless local area network site that the cellular network cell can connect to; If you find a wireless LAN site that can be connected, turn on the wireless LAN function and connect to the wireless LAN site. 2. The method of claim 1, further comprising: The corresponding relationship between the cellular network cell and the wireless local area network site that the cellular network cell can connect to is recorded by the following method: When the terminal is connected to a wireless local area network site, and the corresponding relationship between the current cellular network cell and the wireless local area network site being connected is not recorded, the corresponding relationship is recorded; as well as, When the terminal is connected to a wireless local area network site and detects that the cellular network cell where it is located has changed, but the corresponding relationship between the changed cellular network cell and the connected wireless local area network site is not recorded, the corresponding relationship is recorded. 3. The method of claim 2, further comprising: After connecting to the wireless LAN site, close the data transmission function of the current cellular network cell. 4. The method according to any one of claims 1 to 3, further comprising: After connecting to the wireless LAN site, if it is detected that the network signal strength of the wireless LAN site being connected is lower than the rated value; or it is detected that the packet domain traffic generated by the terminal does not exceed the rated value F within a specified period of time, it will be closed Wireless LAN function, transfer packet domain traffic generated by cellular network transmission. 5. A terminal connected to a wireless local area network, characterized in that the terminal includes a recording module, a wireless local area network site search module and a wireless local area network connection module, wherein, The recording module is used to record the corresponding relationship between the cellular network cell and the wireless LAN site that the cellular network cell can connect to; The wireless local area network site search module is used to search for wireless local area network sites that can be connected to the current cellular network cell from the recording module, and send the found wireless local area network sites to the wireless local area network connection module; The wireless local area network connection module is used to enable the wireless local area network function and connect to the found wireless local area network site. 6. The terminal according to claim 5, wherein the recording module is configured to record the corresponding relationship between a cellular network cell and a wireless local area network site that the cellular network cell can connect to, further comprising: The recording module is used to record the corresponding relationship between the current cellular network cell and the connected wireless local area network site when the terminal is connected to the wireless local area network site; and, when the terminal is connected to the wireless local area network site , and it is detected that the cell of the cellular network where it is located has changed, but the corresponding relationship between the changed cellular network cell and the connected WLAN site is not recorded, and the corresponding relationship is recorded. 7. The terminal according to claim 6, further comprising a cellular network cell connection module, The cellular network cell connection module is configured to close the data transmission function of the cellular network cell where the terminal is currently located after learning from the wireless LAN connection module that the terminal is connected to a wireless LAN site. 8. The terminal according to claims 5-7, characterized in that, The wireless local area network connection module is also used to detect that the network signal strength of the wireless local area network site being connected is lower than the rated value after the terminal is connected to the wireless local area network site; domain flow does not exceed the rated value F, then close the wireless local area network function, and notify the cellular network cell connection module; The cellular network cell connection module is configured to transmit the packet domain traffic generated by the terminal after receiving the notification from the wireless local area network connection module.

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