WO2016101730A1

WO2016101730A1 - Method, apparatus and system for wireless network access

Info

Publication number: WO2016101730A1
Application number: PCT/CN2015/094709
Authority: WO
Inventors: 王中华; 宁敢; 向明
Original assignee: 北京奇虎科技有限公司; 奇智软件（北京）有限公司
Priority date: 2014-12-26
Filing date: 2015-11-16
Publication date: 2016-06-30
Also published as: CN104540186A; CN104540186B

Abstract

A method, apparatus and system for wireless network access are disclosed in the present invention, and are used for solve the problem that the operation process is complex when a visitor is accessing a wireless access point (AP). The method comprises that: the signal strength of a terminal is detected (101); the actual distance between the terminal and a router is calculated according to the signal strength (102); the actual distance is compared with a preset distance threshold value (103); if the actual distance is not larger than the distance threshold value, the terminal accesses the wireless access point (AP) (104).

Description

Method, device and system for wireless network access

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method, device, and system for wireless network access.

Background technique

Wireless Fidelity (WiFi) is one of the most widely used wireless network transmission technologies. WiFi is a wireless network composed of wireless access points (APs) and wireless network cards. Wireless APs are commonly called "hot spots". Any A user terminal such as a smartphone, tablet or laptop with a wireless network card can share network resources through the AP.

In the home network, the host usually sets a password for the wireless AP. When the user terminal of the visitor detects the signal of the wireless AP, the visitor needs to manually select the AP name to be joined, and manually input the wireless password for authentication. In practical applications, manually selecting the AP name and entering the wireless password is cumbersome to operate, and the process of password input is very error-prone.

Summary of the invention

In view of this, the embodiments of the present invention provide a method, a device, and a system for accessing a wireless network, and the main purpose thereof is to solve the problem that the operation process is cumbersome when a visitor accesses the wireless AP.

According to an aspect of the present invention, a method for wireless network access is provided, including:

Detecting the signal strength of the terminal;

Calculate the actual distance between the terminal and the router based on the signal strength;

Comparing the actual distance with a preset distance threshold;

If the actual distance is not greater than the distance threshold, the terminal is connected to the wireless access node AP.

According to another aspect of the present invention, an apparatus for wireless network access is provided, including:

a detecting unit, configured to detect a signal strength of the terminal;

a calculating unit, configured to calculate an actual distance between the terminal and the router according to the signal strength detected by the detecting unit;

The comparison unit is configured to compare the actual distance calculated by the calculation unit with a preset distance threshold Correct;

The access unit is configured to access the terminal to the wireless access node AP when the actual distance of the comparison unit is not greater than the distance threshold.

According to another aspect of the present invention, a system for wireless network access is provided, the system comprising a terminal and a router, wherein the terminal comprises means as previously described.

According to another aspect of the present invention, a computer program is presented, comprising computer readable code that, when executed on a computing device, causes the computing device to perform the wireless network access described above Methods.

According to another aspect of the present invention, a computer readable medium is proposed, wherein the computer program described above is stored.

According to the above technical solution, the method, device and system for wireless network access provided by the invention, the router detects the signal strength of the terminal, calculates the actual distance between the terminal and the router according to the signal strength, and calculates the calculated actual distance and the pre- The distance threshold is compared. When the actual distance is not greater than the distance threshold, the terminal accesses the wireless AP. Compared with the prior art, the present invention determines whether the terminal is allowed to access the wireless AP by manually calculating the actual distance between the terminal and the router according to the signal strength of the terminal, and thus does not need to manually input the wireless password for authentication. The method provided by the invention can greatly simplify the operation process of the terminal accessing the wireless AP.

The above description is only an overview of the technical solutions of the present invention, and the above-described and other objects, features and advantages of the present invention can be more clearly understood. Specific embodiments of the invention are set forth below.

DRAWINGS

Various other advantages and benefits will become apparent to those skilled in the art from a The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting. Throughout the drawings, the same reference numerals are used to refer to the same parts. In the drawing:

FIG. 1 is a flowchart of a method for accessing a wireless network according to an embodiment of the present invention;

2 is a block diagram showing the structure of an apparatus for accessing a wireless network according to an embodiment of the present invention;

FIG. 3 is a structural block diagram of another apparatus for accessing a wireless network according to an embodiment of the present invention;

FIG. 4 is a structural block diagram of another apparatus for accessing a wireless network according to an embodiment of the present invention;

FIG. 5 is a structural block diagram of another apparatus for accessing a wireless network according to an embodiment of the present invention;

FIG. 6 is a structural block diagram of another apparatus for accessing a wireless network according to an embodiment of the present invention;

FIG. 7 is a structural block diagram of another apparatus for accessing a wireless network according to an embodiment of the present invention;

FIG. 8 is a block diagram showing the structure of another apparatus for accessing a wireless network according to an embodiment of the present invention;

FIG. 9 is a structural block diagram of a system for accessing a wireless network according to an embodiment of the present invention;

Figure 10 schematically shows a block diagram of a computing device for performing the method according to the invention;

Fig. 11 schematically shows a storage unit for holding or carrying program code implementing the method according to the invention.

Specific embodiment

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the embodiments of the present invention have been shown in the drawings, the embodiments Rather, these embodiments are provided so that this disclosure will be more fully understood and the scope of the disclosure will be fully disclosed.

The embodiment of the invention provides a method for wireless network access. As shown in FIG. 1 , the method includes:

101. Detect the signal strength of the terminal.

When the terminal needs to access the wireless network, it first needs to open the signal switch of the wireless network on its own device, so that the router can detect the terminal according to the signal sent by the terminal, and the router detects the signal strength of the terminal based on the signal sent by the terminal. The terminal in the step 101 is a terminal that supports wireless Internet access, and the terminal used in the embodiment of the present invention may be: a smart phone, a personal computer (PC), a tablet computer, etc., and the specific embodiment of the present invention. No restrictions are imposed.

102. Calculate the actual distance between the terminal and the router according to the signal strength.

After detecting the signal strength of the terminal in step 101, the router calculates the actual distance between the terminal and the router based on the signal strength. When calculating the actual distance between the terminal and the router, the embodiment of the present invention does not exclude external interference and errors caused by different terminal models.

103. Compare the actual distance with a preset distance threshold.

After the actual distance calculated in step 102 is compared with the preset distance threshold, the smaller the set distance threshold is, the closer the terminal needs to be to the actual distance of the router to access the wireless network. The preset distance threshold is manually set, and may be implemented by using, but not limited to, setting a distance threshold, for example, setting a distance threshold of 40 cm, or setting a distance threshold of 10 cm. The embodiment of the present invention does not limit this.

104. If the actual distance is not greater than the distance threshold, the terminal is connected to the wireless access node AP.

While ensuring that the operation procedure when the terminal accesses the wireless AP can be simplified, the security of the wireless AP is also ensured. In order to prevent other terminals from accessing the wireless AP, the router should perform the authentication according to the comparison result in step 103. If the actual distance is not greater than the distance threshold, the terminal is connected to the wireless AP. If the actual distance is greater than the distance threshold, the terminal cannot be connected to the wireless AP.

In the prior art, for a family scene, when there are many visitors in the home, the owner needs to manually input the password of the wireless AP on each guest's mobile phone, tablet, etc., and the more guests, the repeated work of the owner. The amount is larger, and the process of password entry is very error-prone. In order to simplify the process of accessing a wireless AP by a visitor, the method for accessing a wireless network provided by the embodiment of the present invention detects the signal strength of the terminal by the router, calculates the actual distance between the terminal and the router according to the signal strength, and calculates the actual distance calculated. The distance is compared with a preset distance threshold. When the actual distance is not greater than the distance threshold, the terminal accesses the wireless AP. Compared with the prior art, the embodiment of the present invention determines whether the terminal is allowed to access the wireless AP by manually calculating the actual distance between the terminal and the router according to the signal strength of the terminal, and does not need to manually input the wireless password for authentication. The method provided by the embodiment of the present invention can greatly simplify the operation process of the terminal accessing the wireless AP.

Further, as a refinement and extension of the above embodiment, when the signal strength of the terminal is detected in the above step 101, the router adopts different methods for detecting the signal strength of the terminal for different signal types. When detecting the signal strength of the terminal, the embodiment of the present invention adopts, but is not limited to, the following methods:

method one:

When the terminal transmits the data signal, the received signal strength when detecting the received digital signal indicates the RSSI value.

The signal strength of the router in detecting the terminal is a unified method, and the signal strength is different according to the transmission power of different terminals, and different terminal models correspond to different transmission powers, so after the router detects the RSSI value when receiving the digital signal Find the transmit power of the corresponding terminal model and calibrate the RSSI value according to the transmit power. Exemplarily, it is assumed that the transmission power of the terminal 1 of the model M01 is 40 mW, and the transmission power of the terminal 2 of the model M030 is 5 mW. When the terminal 1 and the terminal 2 are in the same position from the router, the router detects the terminal. The signal strength of 1 is greater than the signal strength of terminal 2; similarly, when the router detects that the signal strengths of terminal 3 and terminal 4 are the same, and the transmission power of terminal 3 and terminal 4 are the same, then terminal 3 and terminal 4 and the router The actual distance between the terminals is the same, but the transmission power of the terminal 3 is not the same as the transmission power of the terminal 4. When the transmission power of the terminal 3 is larger than the transmission power of the terminal 4, the actual distance between the terminal 3 and the router is Compared with the actual distance between the terminal 4 and the router, when the transmission power of the terminal 3 is smaller than the transmission power of the terminal 4, the actual distance between the terminal 3 and the router is smaller than the actual distance between the terminal 4 and the router, and further The router will have an error when calculating the actual distance between the terminal and the router based on the signal strength. Therefore, for the problem as described above, the embodiment of the present invention calibrates the RSSI value according to the size of different transmission powers of different terminal models.

In the actual running process, the router determines the model of the terminal according to the data signal sent by the terminal, and searches for the corresponding transmit power of the terminal according to the terminal model and the transmit power comparison table, as shown in Table 1, Table 1 shows A comparison table of terminal models and transmission powers is available.

Table 1

终端机型Terminal model	发射功率Transmit power
M01M01	40mW40mW
M030M030	5mW5mW
Zw8050Zw8050	60mW60mW
SX673SX673	3mW3mW
H4H4	21mW21mW
Mh370Mh370	25mW25mW

After the router calibrates the RSSI value according to the transmission power of the terminal, the current RSSI value of the terminal is obtained, and the signal strength of the terminal is determined according to the current RSSI value of the terminal, and a preset first mapping relationship table is locally saved in the router to obtain the terminal. The actual distance from the router, where the table has a one-to-one correspondence between the RSSI value and the actual distance.

When the router searches for the corresponding transmit power of the terminal according to the terminal model and the transmit power comparison table, the embodiment of the present invention can be implemented by using, but not limited to, the following manner: the router sequentially searches in the terminal model and the transmit power comparison table. The corresponding transmit power of the terminal; or, by means of the binary method, find the transmit power corresponding to the terminal in the terminal model and the transmit power comparison table. The specific embodiments of the present invention are not limited.

Method 2:

The wireless bridge is connected to the virtual AP created by the terminal to detect the decibel dBm value of the virtual AP.

The router automatically scans the surrounding wireless APs and checks the wireless APs that can be bridged. The router obtains the dBm value carried in the wireless AP during the wireless AP scanning process. The signal strength of the terminal can be detected according to the dBm value. Calculate the actual distance between the terminal and the router. In a specific implementation, the terminal first creates a virtual AP, and the router bridges the virtual AP created by the terminal, and detects the dBm value. The dBm value and the RSSI value can both be used to indicate the signal strength of the terminal, wherein the dBm value and the RSSI value can be converted into each other.

The router obtains the current dBm value of the terminal, and determines the signal strength of the terminal according to the current dBm value of the terminal, and saves a preset second mapping relationship table locally on the router to obtain the actual distance between the terminal and the router, where the table A one-to-one correspondence between the dBm value and the actual distance is recorded.

Optionally, in order to further ensure the security of the wireless AP, the router stops broadcasting the name of the wireless AP to the terminal before detecting the signal strength of the terminal, so that the terminal does not display the name of the wireless AP. In an implementation manner of the embodiment of the present invention, when the router stops broadcasting the name of the wireless AP to the terminal, the router may continue to detect the signal strength of the terminal. When the router calculates the actual distance between the terminal and the router according to the signal strength, the actual distance is not greater than In the distance threshold, the router broadcasts the name of the wireless AP and accesses the terminal to the wireless AP. In another implementation manner of the embodiment of the present invention, the router stops broadcasting the name of the wireless AP to the terminal, and the terminal knows the When the name of the wireless AP is used, the terminal user can manually input the name of the wireless AP and send the request information for accessing the wireless AP to the router. When receiving the request information for accessing the wireless AP, the router sends a message waiting for ranging to the terminal. When the router calculates, according to the signal strength, that the actual distance between the terminal and the router is not greater than the distance threshold, the terminal is connected to the wireless AP. The router stops broadcasting the name of the wireless AP to the terminal, and the name may be a Service Set Identifier (SSID) of the wireless AP, or may be a name of a wireless AP set by the user, such as WX_3003. The embodiment of the present invention does not limit the name of the wireless AP.

In the embodiment of the present invention, when the prompt information for waiting for ranging is sent to the terminal, the information may be implemented by using, but not limited to, the following manner. For example, the router may send the prompt information waiting for ranging to the terminal in the form of a dialog box; or The device may not respond to the request information of the access wireless AP sent by the terminal, but wait for the router to calculate the actual distance between the terminal and the router not greater than the distance threshold according to the signal strength of the terminal, and then access the terminal to the wireless AP. in. The specific embodiments of the present invention are not limited.

In the actual application scenario, the router stops broadcasting the name of the wireless AP to the terminal and applies it to the interactive game of the family. Hide the wireless AP in a corner of the home, Xiaoming, Xiaohua, Xiaohong three people to play, to see which terminal will access the wireless AP in the shortest time, the terminals of Xiaoming, Xiaohua and Xiaohong need to be in The wireless AP can be accessed only within a preset distance from the router. In addition, the router can also be set within a preset distance between the terminal and the router, and the wireless network between the terminal and the wireless AP is established by shaking the terminal, so as to increase the user pair. Simplify the experience of accessing wireless AP operating procedures. The router sets the number and mode of shaking the terminal, so that the terminal can quickly access the wireless AP. The router can set the terminal to shake once, or set the terminal to shake twice. The router determines whether the terminal will shake according to the number of times the terminal shakes. The terminal accesses the wireless AP.

Optionally, since the router can virtualize multiple wireless APs, and each wireless AP has its unique name, the router can also broadcast the names of all the wireless APs to the terminal, so that the user needs to access the terminal. The wireless AP, in which multiple wireless APs virtualized by the same router are subnets created by the router, can access the terminal to the wireless network.

Further, when the router detects that the actual distance between the terminal and the router is not greater than the distance threshold, the router receives the wireless password of the corresponding wireless AP reported by the terminal, and authenticates the terminal according to the wireless password, if the wireless password reported by the terminal is correct. , the terminal is connected to the wireless AP. In an implementation manner of the embodiment of the present invention, when the wireless password reported by the terminal is the name of the broadcast wireless AP, the router is encrypted by the public key and bound to the name. The wireless password, when the router broadcasts the wireless AP, binds the password of the wireless AP to the wireless AP name through an encryption algorithm, and when the terminal displays the name of the wireless AP, the wireless algorithm uses a decryption algorithm corresponding to the wireless AP encryption algorithm. The wireless password bound to the AP name is decrypted, and the decrypted wireless password is reported to the router to enable the terminal to access the wireless AP. In another implementation manner of the embodiment of the present invention, the wireless password reported by the terminal is previously cached by the terminal. The wireless password is passed, and the terminal after the authentication is recorded in the router local area, and the terminal that is authenticated by the router locally caches the wireless password of the access wireless AP, so that the subsequent access to the corresponding wireless AP is required without authentication. Can be connected to the corresponding wireless AP. In a third implementation manner of the embodiment of the present invention, when the name of the wireless AP is displayed in the terminal, the user may manually input the wireless password and wait for the authentication of the router. If the input wireless password is correct, the terminal is used. Access to the wireless AP.

Optionally, when the router detects that the actual distance between the terminal and the router is not greater than the preset distance, canceling the receiving of the wireless password and authenticating the terminal, and accessing the terminal to the wireless AP. The cancellation of the wireless password reception and the authentication of the terminal mentioned here does not mean that any terminal can access the wireless AP unconditionally. As mentioned above, the router needs to calculate the terminal and the router according to the signal strength of the terminal. If the actual distance is not greater than the preset distance threshold, the terminal can be connected to the wireless AP; if the actual distance between the terminal and the router is less than the preset distance threshold, even if the router cancels the reception of the wireless password and The terminal's authentication cannot connect the terminal with the actual distance between the router and the router to the wireless AP.

The terminal can be connected to the wireless AP, and the router can also receive the client identifier reported by the terminal, authenticate the terminal according to the client identifier, and access the terminal to the wireless AP. After the router detects that the actual distance between the terminal and the router is not greater than the preset value, the terminal reports its own client identifier and waits for the authentication of the router. After the client identifier reported by the terminal passes the authentication of the router, the terminal will Automatically access to the wireless AP. The client identifier may be identified by a Token or may be identified by a ticket, which is not limited by the embodiment of the present invention.

Further, as described above, the router may virtualize a plurality of wireless APs, and divide the plurality of virtual APs that are virtualized into a primary wireless AP and a secondary wireless AP, wherein the terminal may log in to the router through the primary wireless AP. The control interface can modify the configuration information of the router, the name of the wireless AP, etc., but the terminal cannot log in to the control interface of the router from the wireless AP; the primary wireless AP and the secondary wireless AP are both subnets created by the router, when there is When a visitor needs to access a wireless network, the terminal can be connected to the secondary wireless AP.

Further, as an implementation of the foregoing method, the embodiment of the present invention further provides a device for accessing a wireless network. As shown in FIG. 2, the device includes:

a detecting unit 21, configured to detect a signal strength of the terminal;

The calculating unit 22 is configured to calculate an actual distance between the terminal and the router according to the signal strength detected by the detecting unit 21;

The comparison unit 23 is configured to compare the actual distance calculated by the calculation unit 22 with a preset distance threshold;

The access unit 24 is configured to access the terminal into the wireless access node AP when the actual distance of the comparison unit 23 is not greater than the distance threshold.

Further, the detecting unit 21 is further configured to: when the terminal sends the data signal, detect the received signal strength indicating the RSSI value when receiving the digital signal;

The calculating unit 22 is further configured to search for a distance value corresponding to the RSSI value detected by the detecting module in the preset first mapping relationship table to obtain an actual distance.

Further, as shown in FIG. 3, the apparatus further includes:

The searching unit 25 is configured to search for the transmit power of the corresponding terminal model after the detecting unit 21 detects the RSSI value when receiving the digital signal;

The calibration unit 26 is configured to calibrate the RSSI value according to the size of the transmission power searched by the searching unit 25.

Further, the detecting unit 21 is further configured to: wirelessly bridge into the virtual AP created by the terminal, and detect a decibel dBm value of the virtual AP bridged by the bridging module;

The calculating unit 22 is further configured to search for a distance value of the dBm value detected by the corresponding detecting unit 21 in the preset second mapping relationship table to obtain an actual distance.

Further, as shown in FIG. 4, the apparatus further includes:

The stopping unit 27 is configured to stop broadcasting the name of the wireless AP to the terminal before the detecting unit 21 detects the signal strength of the terminal, so that the terminal does not display the name of the wireless AP.

Further, as shown in FIG. 5, the apparatus further includes:

The broadcasting unit 28 is configured to broadcast the names of all the wireless APs to the terminal when the actual distance that the comparison unit 23 compares is not greater than the distance threshold, so that the user selects the wireless AP that needs to be accessed on the terminal.

Further, as shown in FIG. 6, the access unit 24 accesses the terminal to the wireless AP, including:

The receiving module 241 is configured to receive a wireless password of the corresponding wireless AP reported by the terminal;

The authentication module 242 is configured to authenticate the terminal by receiving the wireless password according to the receiving module 241.

The access module 243 is configured to: after the authentication module 242 authenticates the terminal, access the terminal. Go to the wireless AP.

Further, the wireless password reported by the terminal received by the receiving module 241 is a wireless password encrypted by the public key and bound to the name when the name of the wireless AP is broadcasted.

Further, the wireless password reported by the terminal received by the receiving module 241 is a wireless password previously cached by the terminal.

Further, as shown in FIG. 7, the access unit 24 accesses the terminal to the wireless AP, including:

The canceling module 244 is configured to cancel the receiving of the wireless password and the authentication of the terminal, and access the terminal to the wireless AP;

The receiving module 241 is further configured to receive the client identifier reported by the terminal;

The authentication module 242 is further configured to: authenticate the terminal according to the client identifier received by the receiving module 241;

The access module 241 is further configured to: after the authentication module 242 authenticates the client identifier, access the terminal to the wireless AP.

Further, as shown in FIG. 8, the access unit 24 accesses the terminal to the wireless AP, including:

The establishing module 245 is configured to establish a virtual wireless AP, and the terminal cannot log in to the control interface of the router through the virtual wireless AP;

The access module 243 is further configured to access the terminal to the virtual wireless AP established by the establishing module 245.

Further, as an implementation of the foregoing method and the application of the foregoing apparatus, as shown in FIG. 9, the embodiment of the present invention further provides a system for wireless network access, where the system includes a terminal 31 and a router 32, wherein the terminal 31 includes The apparatus shown in any of the above Figures 2 to 8.

The device and system for accessing a wireless network according to an embodiment of the present invention, the router detects the signal strength of the terminal, calculates the actual distance between the terminal and the router according to the signal strength, and compares the calculated actual distance with a preset distance threshold. Yes, when the actual distance is not greater than the distance threshold, the terminal accesses the wireless AP. Compared with the prior art, the embodiment of the present invention determines whether the terminal is allowed to access the wireless AP by manually calculating the actual distance between the terminal and the router according to the signal strength of the terminal, and does not need to manually input the wireless password for authentication. The device and system provided by the present invention can greatly simplify the operation process of the terminal accessing the wireless AP.

In the above embodiments, the descriptions of the various embodiments are different, and there is no embodiment. For a detailed description, refer to the related description of other embodiments.

It will be appreciated that related features in the above methods and apparatus can be referenced to each other. In addition, "first", "second", and the like in the above embodiments are used to distinguish the embodiments, and do not represent the advantages and disadvantages of the embodiments.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

The algorithms and displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general purpose systems can also be used with the teaching based on the teachings herein. The structure required to construct such a system is apparent from the above description. Moreover, the invention is not directed to any particular programming language. It is to be understood that the invention may be embodied in a variety of programming language, and the description of the specific language has been described above in order to disclose the preferred embodiments of the invention.

In the description provided herein, numerous specific details are set forth. However, it is understood that the embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of the description.

Similarly, the various features of the invention are sometimes grouped together into a single embodiment, in the above description of the exemplary embodiments of the invention, Figure, or a description of it. However, the method disclosed is not to be interpreted as reflecting the intention that the claimed invention requires more features than those recited in the claims. Rather, as the following claims reflect, inventive aspects reside in less than all features of the single embodiments disclosed herein. Therefore, the claims following the specific embodiments are hereby explicitly incorporated into the embodiments, and each of the claims as a separate embodiment of the invention.

Those skilled in the art will appreciate that the modules in the devices of the embodiments can be adaptively changed and placed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and further they may be divided into a plurality of sub-modules or sub-units or sub-components. In addition to such features and/or at least some of the processes or units being mutually exclusive, any combination of the features disclosed in the specification, including the accompanying claims, the abstract and the drawings, and any methods so disclosed, or All processes or units of the device are combined. This specification (including Each feature disclosed in the accompanying claims, the abstract and the drawings may be replaced by alternative features that provide the same, equivalent or similar purpose.

In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features that are included in other embodiments and not in other features, combinations of features of different embodiments are intended to be within the scope of the present invention. Different embodiments are formed and formed. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

The various component embodiments of the present invention may be implemented in hardware, or in a software module running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or digital signal processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components of the wireless network access device in accordance with embodiments of the present invention. The invention can also be implemented as a device or device program (e.g., a computer program and a computer program product) for performing some or all of the methods described herein. Such a program implementing the invention may be stored on a computer readable medium or may be in the form of one or more signals. Such signals may be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

For example, Figure 10 schematically illustrates a block diagram of a computing device for performing the method in accordance with the present invention. The computing device conventionally includes a processor 1010 and a computer program product or computer readable medium in the form of a memory 1020. The memory 1020 may be an electronic memory such as a flash memory, an EEPROM (Electrically Erasable Programmable Read Only Memory), an EPROM, a hard disk, or a ROM. The memory 1020 has a memory space 1030 for executing program code 1031 of any of the above method steps. For example, storage space 1030 for program code may include various program code 1031 for implementing various steps in the above methods, respectively. The program code can be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. Such a computer program product is typically a portable or fixed storage unit as described with reference to FIG. The storage unit may have storage segments, storage spaces, and the like that are similarly arranged to memory 1020 in the computing device of FIG. The program code can be compressed, for example, in an appropriate form. Typically, the storage unit comprises computer readable code 1031' for performing the steps of the method according to the invention, i.e. code which can be read by a processor such as 1010, which is carried by the computing device At the time of the line, the computing device is caused to perform the various steps in the method described above.

It is to be noted that the above-described embodiments are illustrative of the invention and are not intended to be limiting, and that the invention may be devised without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as a limitation. The word "comprising" does not exclude the presence of the elements or steps that are not recited in the claims. The word "a" or "an" The invention can be implemented by means of hardware comprising several distinct elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means can be embodied by the same hardware item. The use of the words first, second, and third does not indicate any order. These words can be interpreted as names.

In addition, it should be noted that the language used in the specification has been selected for the purpose of readability and teaching, and is not intended to be construed or limited. Therefore, many modifications and changes will be apparent to those skilled in the art without departing from the scope of the invention. The disclosure of the present invention is intended to be illustrative, and not restrictive, and the scope of the invention is defined by the appended claims.

The present invention is applicable to computer systems/servers that can operate with numerous other general purpose or special purpose computing system environments or configurations. Examples of well-known computing systems, environments, and/or configurations suitable for use with computer systems/servers include, but are not limited to, personal computer systems, server computer systems, thin clients, thick clients, handheld or laptop devices, based on Microprocessor systems, set-top boxes, programmable consumer electronics, networked personal computers, small computer systems, mainframe computer systems, and distributed cloud computing technology environments including any of the above, and the like.

The computer system/server can be described in the general context of computer system executable instructions (such as program modules) being executed by a computer system. Generally, program modules may include routines, programs, target programs, components, logic, data structures, and the like that perform particular tasks or implement particular abstract data types. The computer system/server can be implemented in a distributed cloud computing environment where tasks are performed by remote processing devices that are linked through a communication network. In a distributed cloud computing environment, program modules may be located on a local or remote computing system storage medium including storage devices.

"an embodiment," or "an embodiment," or "an embodiment," In addition, it is noted that the phrase "in one embodiment" is not necessarily referring to the same embodiment.

Claims

A method for wireless network access, comprising:

Detecting the signal strength of the terminal;

Calculating an actual distance between the terminal and the router according to the signal strength;

Comparing the actual distance with a preset distance threshold;

If the actual distance is not greater than the distance threshold, the terminal is accessed into the wireless access node AP.
The method according to claim 1, wherein the detecting the signal strength of the terminal comprises:

When the terminal transmits a data signal, detecting a received signal strength indicating an RSSI value when the digital signal is received;

Calculating the actual distance between the terminal and the router according to the signal strength, including:

Finding a distance value corresponding to the RSSI value in a preset first mapping relationship table, and obtaining the actual distance.
The method according to claim 2, wherein after the detecting the RSSI value when the digital signal is received, the method further comprises:

Finding a transmit power corresponding to the terminal model;

The RSSI value is calibrated according to the magnitude of the transmit power.
The method according to claim 1, wherein the detecting the signal strength of the terminal comprises:

Wirelessly connecting to the virtual AP created by the terminal;

Detecting a decibel dBm value of the virtual AP;

Calculating the actual distance between the terminal and the router according to the signal strength, including:

Finding a distance value corresponding to the dBm value in a preset second mapping relationship table, and obtaining the actual distance.
The method according to claim 1, wherein before the detecting the signal strength of the terminal, the method further comprises:

Stop broadcasting the name of the wireless AP to the terminal such that the terminal does not display the name of the wireless AP.
The method according to claim 5, wherein if the actual distance is not greater than the distance threshold, the method further comprises:

The names of all wireless APs are broadcast to the terminal such that the user selects a wireless AP that needs to be accessed on the terminal.
The method according to claim 1, wherein the accessing the terminal to the wireless AP comprises:

Receiving, by the terminal, a wireless password corresponding to the wireless AP;

After authenticating the terminal according to the wireless password, the terminal is accessed into the wireless AP.
The method according to claim 7, wherein the wireless password reported by the terminal is a wireless password encrypted by a public key and bound to the name when the name of the wireless AP is broadcasted.
The method according to claim 7, wherein the wireless password reported by the terminal is a wireless password previously cached by the terminal.
The method according to claim 1, wherein the accessing the terminal to the wireless AP comprises:

Deactivating the wireless password and authenticating the terminal, and accessing the terminal to the wireless AP;

Or receiving the client identifier reported by the terminal, authenticating the terminal according to the client identifier, and accessing the terminal to the wireless AP.
The method according to any one of claims 1 to 10, wherein the accessing the terminal to the wireless AP comprises:

Establishing a virtual wireless AP, where the terminal cannot log in to the control interface of the router through the virtual wireless AP;

The terminal is accessed into the virtual wireless AP.
A device for accessing a wireless network, comprising:

a detecting unit, configured to detect a signal strength of the terminal;

a calculating unit, configured to calculate an actual distance between the terminal and the router according to the signal strength detected by the detecting unit;

a comparison unit, configured to compare the actual distance calculated by the calculation unit with a preset distance threshold;

And an access unit, configured to: when the actual distance of the comparison unit is not greater than the distance threshold, access the terminal to the wireless access node AP.
The apparatus according to claim 12, wherein said detecting unit is further configured to: When the terminal transmits a data signal, detecting a received signal strength indicating an RSSI value when the digital signal is received;

The calculating unit is further configured to: search, in the preset first mapping relationship table, a distance value corresponding to the RSSI value detected by the detecting module, to obtain the actual distance.
The device of claim 13 wherein said device further comprises:

a searching unit, configured to search for a transmit power corresponding to the terminal model after the detecting unit detects an RSSI value when the digital signal is received;

And a calibration unit, configured to calibrate the RSSI value according to a size of a transmit power searched by the lookup unit.
The device according to claim 12, wherein the detecting unit is further configured to: wirelessly bridge into the virtual AP created by the terminal, and detect a decibel dBm value of the virtual AP bridged by the bridging module;

The calculating unit is further configured to: search, in the preset second mapping relationship table, a distance value corresponding to the dBm value detected by the detecting unit, to obtain the actual distance.
The device of claim 12, wherein the device further comprises:

And a stopping unit, configured to stop broadcasting the name of the wireless AP to the terminal before the detecting unit detects the signal strength of the terminal, so that the terminal does not display the name of the wireless AP.
The device of claim 16 wherein said device further comprises:

a broadcast unit, configured to: when the actual distance of the comparison unit is not greater than the distance threshold, broadcast a name of all wireless APs to the terminal, so that the user selects a wireless AP that needs to be accessed on the terminal. .
The device according to claim 12, wherein the access unit accesses the terminal to the wireless AP, including:

a receiving module, configured to receive a wireless password corresponding to the wireless AP reported by the terminal;

An authentication module, configured to authenticate the terminal by receiving a wireless password according to the receiving module;

An access module, configured to: after the authenticating module authenticates the terminal, access the terminal to the wireless AP.
The device according to claim 18, wherein the wireless password reported by the terminal received by the receiving module is a wireless password encrypted by a public key and bound to the name when the name of the wireless AP is broadcasted.
The device according to claim 18, wherein said receiving module receives The wireless password reported by the terminal is a wireless password previously cached by the terminal.
The device according to claim 12, wherein the access unit accesses the terminal to the wireless AP, including:

a canceling module, configured to cancel receiving the wireless password and authenticating the terminal, and accessing the terminal to the wireless AP;

The receiving module is further configured to receive a client identifier reported by the terminal;

The authentication module is further configured to: perform authentication on the terminal according to the client identifier received by the receiving module;

The access module is further configured to: after the authenticating module authenticates the client identifier, the terminal is connected to the wireless AP.
The device according to any one of claims 12 to 21, wherein the access unit accesses the terminal to the wireless AP, including:

Establishing a module, configured to establish a virtual wireless AP, where the terminal cannot log in to the control interface of the router by using the virtual wireless AP;

The access module is further configured to: connect the terminal to a virtual 25-line AP established by the establishing module.
A system for wireless network access, characterized in that the system comprises a terminal and a router, wherein the terminal comprises the apparatus as claimed in any one of claims 12 to 22.
A computer program comprising computer readable code, when said computer readable code is run on a computing device, causing said computing device to perform wireless network access according to any of claims 1-11 method.
A computer readable medium storing the computer program of claim 24.