CN102378303B - Method and device for selecting WIFI (Wireless Fidelity) access point to access to network - Google Patents

Method and device for selecting WIFI (Wireless Fidelity) access point to access to network Download PDF

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Publication number
CN102378303B
CN102378303B CN201010264363.8A CN201010264363A CN102378303B CN 102378303 B CN102378303 B CN 102378303B CN 201010264363 A CN201010264363 A CN 201010264363A CN 102378303 B CN102378303 B CN 102378303B
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China
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access point
wifi access
wifi
destination address
access
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CN201010264363.8A
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Chinese (zh)
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CN102378303A (en
Inventor
薛春刚
王东
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中国移动通信有限公司
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Abstract

The invention provides a method and device for selecting a WIFI (Wireless Fidelity) access point to access to a network. The method specifically comprises the following steps that: when a terminal initiates a network connection request, the terminal is matched with the access range of each usable WIFI access point according to a target address contained in the network connection request; and when at least one WIFI access point of which the access range can reach a target network appointed by the network connection request exists, any one WIFI access point can be selected for the terminal to access to the target network. Each selectable WIFI access point is the usable WIFI access point and can realize the access function, and the connection range meets the requirements of the network connection request, so that the terminal can successfully access to the target network appointed by the network connection request, and services can be executed smoothly.

Description

A kind of method and device selecting WIFI access point access network

Technical field

The present invention relates to field of wireless, particularly relate to a kind of method and the device of selecting WIFI access point access network.

Background technology

Wireless Fidelity (WIFI, Wireless Fidelity) technology is the same with Bluetooth technology, belong to the short-distance wireless communication technology used in office or family, WIFI network is by WIFI access point (AP, AccessPoint) and wireless network card composition wireless network, wherein, AP is the bridge between cable network and wireless network, any terminal that wireless network card is housed all can pass through AP and shares the cable LAN even resource of wired wide area network, its operation principle is equivalent to hub (HUB) or the router of a built-in wireless launcher, wireless network card is then be responsible for receiving the client device transmitted by AP, the terminal realizing having wireless network card by AP is fast connected to objective network.

When supporting the terminal being realized wireless Internet access by WIFI network, as notebook computer, net book, mobile phone, personal digital assistant (PDA, Personal Digital Assistant), mobile internet device (MID, Mobile Internet Device) etc., when being in the environment of multiple AP, configuration according to acquiescence is carried out network connection by terminal, in the case, if the Network that the AP of acquiescence provides is not mated with the Network of terminal actual needs, then may cause access failure, business cannot be carried out.Such as: terminal actual needs is linked into local area network (LAN) A, and the AP that acquiescence is selected is when can only support to be linked into local area network (LAN) B, and the AP utilizing acquiescence to select can not access to LAN A, and business will be caused to perform failure.

Therefore, need badly and introduce a kind of WIFI access point of selecting and access the method for objective network, thus guarantee the network that terminal is passed through the WIFI access point after selecting and can be connected actual needs access, ensure carrying out smoothly of business.

Summary of the invention

The embodiment of the present invention provides a kind of method and the device of selecting WIFI access point access network, for solving in prior art when by WIFI access point access objective network, the WIFI access point that acquiescence is selected probably cannot ensure the problem of the smooth execution of business.

Select a method for Wireless Fidelity WIFI access point access network, the method comprises:

When receiving the network connecting request of terminal, determine the destination address comprised in described network connecting request;

Determine WIFI access point available in environment residing for described terminal, and determine the access range information of each available WIFI access point;

The access range information of each available WIFI access point in environment residing for the terminal determined, determines the WIFI access point that access range information is mated with described destination address;

The described WIFI access point access network of indicating terminal by determining.

Select a device for WIFI access point access network, this device comprises:

Destination address determination module, for when receiving the network connecting request of terminal, determines the destination address comprised in described network connecting request;

Available WIFI access point determination module, for determining WIFI access point available in environment residing for described terminal, and determines the access range information of each available WIFI access point;

Access point decision-making module, for the access range information of each available WIFI access point in environment residing for the terminal determined, determines the WIFI access point that access range information is mated with described destination address;

WIFI link block, is used to indicate the described WIFI access point access network of terminal by determining.

The present invention is when terminal initiates network connecting request, according to the destination address comprised in network connecting request, mate with the access range information of available WIFI access point each in environment residing for terminal, when there is at least one access scope and can reaching the WIFI access point of the objective network that network connecting request is pointed to, in this at least one WIFI access point, an optional WIFI access point terminal can be accessed objective network, because optional each WIFI access point is available WIFI access point, all access function can be realized, and join domain meets the requirement of network connecting request, thus ensure that terminal can smoothly access network connection request point to objective network, guarantee that business can perform smoothly.

Accompanying drawing explanation

A kind of method flow schematic diagram determining the information of each available WIFI access point in environment residing for terminal that Fig. 1 provides for the embodiment of the present invention one;

A kind of method flow schematic diagram selecting WIFI access point access network that Fig. 2 provides for the embodiment of the present invention two;

A kind of structural representation selecting the device of WIFI access point access network that Fig. 3 provides for the embodiment of the present invention three;

A kind of structural representation selecting the device of WIFI access point access network that Fig. 4 provides for the embodiment of the present invention three.

Embodiment

When there is multiple WIFI access point for prior art in the environment residing for terminal, default setting can only be utilized to select WIFI access point, the problem of the smooth execution of business can not be ensured, the embodiment of the present invention provides a kind of scheme selected multiple WIFI access point, therefrom select the WIFI access point meeting the actual WIFI network needs of terminal, to guarantee the correct execution of business.

Below in conjunction with Figure of description, various embodiments of the present invention are described in detail.

Embodiment one:

In the scheme of the embodiment of the present invention, before the WIFI access point that the access network service selection for terminal is suitable, first the information of the available WIFI access point in environment residing for terminal should be determined, and these information be recorded in terminal, so that utilize the information of the useful WIFI access point recorded to select WIFI access point when terminal request access network.The method of the information of the available WIFI access point in environment residing for terminal is clearly determined below by embodiment one.

As shown in Figure 1, for determining the method for the information of each available WIFI access point in environment residing for terminal in the embodiment of the present invention one, method flow is as follows:

Step 101, determine WIFI access point available in environment residing for terminal.

Before determining WIFI access point available in environment residing for terminal, first need all WIFI access points determining environment residing for terminal.In embodiments of the present invention, all WIFI access points of the current environment residing for terminal are obtained by the interface of operating system.After obtaining all WIFI access points of environment residing for terminal, the WIFI access point list List A of environment residing for terminal can be generated.

After determining WIFI access points all in environment residing for terminal, determine WIFI access point available in all WIFI access points further, to ensure all access function can be realized when selecting any one WIFI access point access network.For the arbitrary WIFI access point in ListA, perform following operation successively:

By sending a request message to WIFI access point, confirm that WIFI access point carries out authentication the need of to the terminal of access, if do not needed, then determine that this WIFI access point is available WIFI access point, if needed, then continue to judge whether terminal local has been configured with corresponding authorization information, as associated user's name/authorization information such as password and agency, if terminal local has been configured with corresponding authorization information, then this WIFI access point is available WIFI access point, otherwise, determine that this WIFI access point is disabled WIFI access point.

To obtain in the environment residing for terminal after all available WIFI access points from List A, available WIFI access point list List B in the environment residing for terminal can be generated.

Step 102, determine the access range information of each available WIFI access point.

Consider that the access scope of different WIFI access point is different, some WIFI access points can access to LAN (LAN) and the Internet (Internet), some WIFI access points are only with access to LAN, and the local area network (LAN) that different WIFI access point can access is different, therefore, need the access range information determining all available WIFI access points, so that when selecting suitable WIFI access point for terminal, need the destination address be connected to mate with terminal.In embodiments of the present invention, the detection method of the access scope of concrete WIFI access point can be:

First access request is sent by each available WIFI access point to a reliable Internet address, judge whether this WIFI access point can access Internet, if have response in time-out time, this WIFI access point support access Internet can be judged, otherwise, judge that this WIFI access point is not supported to access Internet;

Secondly, for all available WIFI access points, operating system interface is used to obtain the access network segment of this WIFI access point support, determine according to the access network segment of this WIFI access point support the network range that this WIFI access point can access, and then determine the local area network (LAN) that this WIFI access point can access.

In order to ensure to improve the efficiency of access objective network while business performs smoothly and improve the quality of data transmit-receive, the embodiment of the present invention additionally provides following preferred steps:

Step 103, the identical available WIFI access point of access range information to be divided in same grouping.

Preferably, after the access range information obtaining each available WIFI access point in environment residing for terminal, can divide into groups to WIFI access point according to the access range information of each available WIFI access point, WIFI access point identical for access range information is divided in same group, described access range information is identical, refers to whether the access network segment of WIFI access point support and this WIFI access point support that the information of accessing Internet is all identical.

Available WIFI access point identical for access range information is divided in same grouping, make follow-up when receiving network connecting request, first according to the destination address of described network connecting request, select a WIFI access point grouping, continue again to select WIFI access point from this grouping, reduce the scope that WIFI access point is selected, thus reduce the time that WIFI access point is selected, improve the efficiency utilizing WIFI access point to access objective network.

Step 104, determine the access capability value of each available WIFI access point.

In embodiments of the present invention, the access capability value of each WIFI access point can be determined according to the combination of the one or more parameters in the parameters such as the signal strength signal intensity of WIFI access point, signal quality and bandwidth rank, described signal strength signal intensity, signal quality are obtained by operating system interface, bandwidth rank by each WIFI access point to particular address send request and the recording responses time determine.

This step is not limited to perform after step 103, also can be perform after step 102, namely no matter whether division operation is performed to available WIFI access point, all can determine the access capability value of each available WIFI access point, for the WIFI access point that follow-up selection access capability is higher, improve data transmit-receive quality when business performs.

It is to be noted, state due to WIFI access point changes or terminal is moved all may cause usable access point and relevant information thereof in the environment residing for terminal to change, ageing in order to ensure that WIFI access point is selected, need to upgrade available WIFI access point and relevant information thereof in environment residing for terminal in time.Can be carry out in the cycle to the renewal of available WIFI access point and relevant information thereof in environment residing for terminal, as after step 104, Updating time (Timer) can be started, when Timer time-out, re-execute step 101; Also can be that condition triggers, as when receiving network connecting request, trigger and performing step 101.

Embodiment two:

As shown in Figure 2, the embodiment of the present invention two provides a kind of method selecting WIFI access point access network, and method flow is as follows:

Step 201, when receiving the network connecting request of terminal, determine the destination address comprised in described network connecting request.

When terminal has application program to initiate network connecting request, trigger the selection to WIFI access point, determine the destination address comprised in described network connecting request.

This step can be the trigger condition of embodiment one, also the mode when this step performs according to embodiment one can have recorded the relevant information of available WIFI in terminal.

Step 202, determine to access in WIFI access point available in environment residing for terminal the WIFI access point that range information mates with described destination address.

The access range information of described available WIFI access-in point information and described available WIFI access point can obtain by after step 201 activating embodiment one before this step, this step, according to the access range information of the available WIFI access point obtained, determines the WIFI access point mated with described destination address; Or the information of described available WIFI access point and the access range information of the available WIFI access point cycle before step 201 performs embodiment one and preserves in advance, this step reads the access range information of the available WIFI access point preserved in advance, and determines the WIFI access point that mates with destination address.

In the embodiment of the present invention two, described access range information comprises the information whether the access network segment of WIFI access point support and this WIFI access point support accessing Internet, because the destination address obtained in step 201 may be domain name (DN, Domain Name) information or Internet protocol (IP, Internetprotocol) address, therefore need to utilize domain name system (DNS to the destination address of the network connecting request obtained in step 201, Domain Name System) resolve, after judging the objective network corresponding to destination address, mate with the access range information of WIFI access point, determine the WIFI access point accessing objective network.This step specifically comprises:

If described destination address is domain-name information, then by the Internet DNS, destination address is resolved, if successfully resolved, the objective network that then decision network connection request points to is Internet, support that a WIFI access point of access Internet information is defined as the WIFI access point mated with destination address by having in fixed access range information, otherwise, local area network (LAN) for the access of available WIFI access point correspondence supports dns resolution, by the local area network (LAN) DNS of each available WIFI access point correspondence access, destination address is resolved successively, judge the objective network that the local area network (LAN) of destination address successfully resolved is pointed to as network connecting request, corresponding for this local area network (LAN) WIFI access point is defined as the WIFI access point mated with destination address, the local area network (LAN) of corresponding access does not support that the available WIFI access point of dns resolution is defined as the unmatched WIFI access point with destination address,

If described destination address is IP address, first destination address and available WIFI access point are accessed the access network segment supported in range information to mate, local area network (LAN) corresponding with the available WIFI access point that destination address mates for the access network segment supported in access range information is defined as the objective network that network connecting request is pointed to, corresponding for this local area network (LAN) WIFI access point is defined as the WIFI access point mated with destination address, otherwise, the objective network that decision network connection request points to is Internet, a WIFI access point that access scope can be reached Internet is defined as the WIFI access point mated with destination address.

It is pointed out that when determining that multiple access scope can reach the WIFI access point of objective network, a WIFI access point can be selected arbitrarily as the access point mated with described destination address.

For the special circumstances that there is not the WIFI access point that access scope is mated with destination address, can set basis default setting, utilize the WIFI access point access objective network of acquiescence, concrete, described default setting can arrange access point for empty, is namely free of attachment to objective network.

Step 203, the indicating terminal described WIFI access point access network by determining.

After determining the access point that access scope is mated with described destination address, indicating terminal carries out attended operation by the WIFI access point determined.

It should be noted that, if be utilize the WIFI access-in point information in embodiment one scheme after grouping to process in the present embodiment two, grouping information can be obtained by step 201 activating embodiment one before step 202, or before step 201 cycle perform embodiment one and preserve in advance, then after determining WIFI access point access range information, and before determining the WIFI access point mated with described destination address, when also obtaining the grouping of at least one WIFI access point according to access range information further, then step 202 specifically comprises:

If described destination address is domain-name information, then by internet domain name system DNS, destination address is resolved; If successfully resolved, then from the first grouping, select a WIFI access point as the WIFI access point mated with described destination address, in the access range information comprised in described first grouping, have the information supporting accessing Internet; Otherwise, by the local area network (LAN) DNS that each grouping is corresponding, destination address is resolved successively, from the grouping that the local area network (LAN) DNS to destination address successfully resolved is corresponding, selects a WIFI access point as the WIFI access point mated with described destination address;

If described destination address is internet protocol address, then judge whether to exist that access range information mates with described destination address second divides into groups; If there is the second grouping, then from the second grouping, select a WIFI access point as the WIFI access point mated with described destination address; Otherwise, select a WIFI access point as the WIFI access point mated with described destination address from comprising access range information to have in the grouping of the information supporting accessing Internet.

(comprise when not dividing into groups and when dividing into groups) when determining that multiple access scope can reach the WIFI access point of objective network, the access capability value of each WIFI access point that access scope is mated with destination address can be obtained further, the access capability value of each WIFI access point that described access scope is mated with destination address can be obtain in the access capability value of predetermined all available WIFI access points from embodiment one, and in order to reduce amount of calculation, save turn-on time, further raising access efficiency, also after can determining in the present embodiment two that access scope can reach the WIFI access point of objective network, only determine the access capability value of each WIFI access point that access scope is mated with destination address further.

The access capability value of each WIFI access point that access scope is mated with destination address can be determined according to the combination of the one or more parameters in the parameters such as the signal strength signal intensity of WIFI access point, signal quality and bandwidth rank, in the present embodiment two, there is provided a kind of computational methods of concrete access capability value, computing formula is as follows:

R = S S ‾ + Q Q ‾ + 1 B

Wherein: wherein, R represents the access capability value of the WIFI access point determining access capability value; the mean value of each WIFI access point signals intensity of objective network can be reached for access scope; the mean value of each WIFI access point signals quality of objective network can be reached for access scope; S represents the signal strength signal intensity of the WIFI access point determining access capability value; Q represents the signal quality of the WIFI access point determining access capability value; B represents and determines that the WIFI access point of access capability value can reach the bandwidth rank in each WIFI access point of objective network in access scope.

Access capability according to each access point selects access point, then can reach the WIFI access point of objective network from multiple access scope in step 202 and select the access point that a WIFI access point mates with described destination address as access scope specifically to comprise:

Utilize the access capability value of each WIFI access point can reach the WIFI access point of objective network from multiple access scope and select a WIFI access point, can be, but not limited to select access capability value higher than any one access point in the access point of setting threshold value, special, the access point that the highest access point of access capability value mates with described destination address as access scope can be selected.

Embodiment three,

The embodiment of the present invention provides a kind of device selecting WIFI access point access network, and this device comprises destination address determination module 31, available WIFI access point determination module 32, access point decision-making module 33 and WIFI link block 34:

Destination address determination module 31, for when receiving the network connecting request of terminal, determines the destination address comprised in described network connecting request; Available WIFI access point determination module 32 for determining WIFI access point available in environment residing for described terminal, and determines the access range information of each available WIFI access point; Access point decision-making module 33 is for the access range information of each available WIFI access point in environment residing for the terminal determined, determine to access the WIFI access point that mates with described destination address of range information, described access range information comprises the information whether the access network segment of WIFI access point support and this WIFI access point support accessing Internet; WIFI link block 34 is used to indicate the described WIFI access point access network of terminal by determining.

Described device also comprises grouping module 35, and available WIFI access point identical for access range information, for the access range information according to each the available WIFI access point determined, is divided in same grouping by grouping module 35.

It should be noted that, available WIFI access point determination module 32 can be triggered and grouping module 35 is run under multiple trigger condition, such as: receive the network connecting request of terminal at destination address determination module 31 before, take cycle as trigger condition, require available WIFI access point determination module 32 and grouping module 35 periodically to determine available WIFI access point and determine the access range information of available WIFI access point, in the case, the apparatus structure schematic diagram of the selection WIFI access point access network in the present embodiment three as shown in Figure 3.

The present embodiment three is also not limited to receive the network connecting request of terminal for trigger condition with destination address determination module 31, trigger available WIFI access point determination module 32 and grouping module 35 is periodically determined available WIFI access point and determined the access range information of available WIFI access point, in the case, the apparatus structure schematic diagram of the selection WIFI access point access network in the present embodiment three as shown in Figure 4.

Described available WIFI access point determination module 32 is specifically for determining WIFI access points all in environment residing for terminal, and wherein will not need authentication, or need authentication but the WIFI access point having configured corresponding authorization information in described terminal is defined as available WIFI access point, and determine the access range information of each available WIFI access point.

Described access point decision-making module 33 comprises specifically for determining the grouping accessing range information and mate with described destination address, and using a WIFI access point in this grouping determined as the WIFI access point mated with described destination address.

Described access range information comprises the information whether the access network segment of WIFI access point support and this WIFI access point support accessing Internet.

If described access point decision-making module 33 is domain-name information specifically for described destination address, then by internet domain name system DNS, destination address is resolved, if successfully resolved, then from the first grouping, select a WIFI access point as the WIFI access point mated with described destination address, the information supporting accessing Internet is had in the access range information of the WIFI access point comprised in described first grouping, otherwise, by the local area network (LAN) DNS that each grouping is corresponding, destination address is resolved successively, from the grouping that the local area network (LAN) DNS to destination address successfully resolved is corresponding, select a WIFI access point as the WIFI access point mated with described destination address.

If described access point decision-making module 33 is internet protocol address specifically for described destination address, then judge whether to exist that access range information mates with described destination address second divides into groups, if there is the second grouping, then from the second grouping, select a WIFI access point as the WIFI access point mated with described destination address, otherwise, select a WIFI access point as the WIFI access point mated with described destination address from comprising access range information to have in the grouping of the information supporting accessing Internet.

Described access point decision-making module 33 is specifically for determining the access capability value of WIFI access point according to following formula:

R = S S ‾ + Q Q ‾ + 1 B

Wherein, R represents the access capability value of the WIFI access point determining access capability value; the mean value of each WIFI access point signals intensity of objective network can be reached for access scope; the mean value of each WIFI access point signals quality of objective network can be reached for access scope; S represents the signal strength signal intensity of the WIFI access point determining access capability value; Q represents the signal quality of the WIFI access point determining access capability value; B represents and determines the bandwidth rank of the WIFI access point of access capability value in each WIFI access point mated with described destination address.

Described access point decision-making module 33 also for determining the access capability value of each WIFI access point mated with described destination address, and selects access capability value to be greater than a WIFI access point of setting threshold value.

Described WIFI link block 34 is greater than the WIFI access point access network of setting threshold value by the access capability value selected specifically for indicating terminal.

Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims (12)

1. select a method for Wireless Fidelity WIFI access point access network, it is characterized in that, the method comprises:
When receiving the network connecting request of terminal, determine the destination address comprised in described network connecting request, the corresponding objective network of described destination address;
Determine WIFI access point available in environment residing for described terminal, and determine the access range information of each available WIFI access point, described access range information comprises the information whether the access network segment of WIFI access point support and this WIFI access point support accessing Internet;
The access range information of the described destination address determined with each the available WIFI access point determined is mated, determines the WIFI access point that access range information is mated with described destination address;
Determine the access capability value of each WIFI access point mated with described destination address, and select access capability value to be greater than a WIFI access point of setting threshold value;
The described WIFI access point access network of indicating terminal by determining;
Wherein, the access capability value of described WIFI access point is determined by least one parameter following or parameter combinations: signal strength signal intensity, signal quality and bandwidth rank; The access capability value of described WIFI access point is determined by following formula,
R = S S ‾ + Q Q ‾ + 1 B
Wherein, R represents the access capability value of the WIFI access point determining access capability value; the mean value of each WIFI access point signals intensity of objective network can be reached for access scope; the mean value of each WIFI access point signals quality of objective network can be reached for access scope; S represents the signal strength signal intensity of the WIFI access point determining access capability value; Q represents the signal quality of the WIFI access point determining access capability value; B represents and determines the bandwidth rank of the WIFI access point of access capability value in each WIFI access point mated with described destination address.
2. the method for claim 1, is characterized in that, determines WIFI access point available in environment residing for described terminal, comprising:
Determine WIFI access points all in environment residing for terminal, and wherein will not need authentication, or need authentication but the WIFI access point having configured corresponding authorization information in described terminal is defined as available WIFI access point.
3. the method for claim 1, is characterized in that, according to the access range information of each the available WIFI access point determined, determines specifically to comprise the WIFI access point that access range information is mated with described destination address:
According to the access range information of each the available WIFI access point determined, available WIFI access point identical for access range information is divided in same grouping;
Determine to comprise the grouping accessing range information and mate with described destination address, and using a WIFI access point in this grouping determined as the WIFI access point mated with described destination address.
4. method as claimed in claim 3, is characterized in that, described access range information comprises the information whether the access network segment of WIFI access point support and this WIFI access point support accessing Internet;
Determine specifically to comprise the WIFI access point that access range information is mated with described destination address:
If described destination address is domain-name information, then by internet domain name system DNS, destination address is resolved;
If successfully resolved, then from the first grouping, select a WIFI access point as the WIFI access point mated with described destination address, in the access range information comprised in described first grouping, have the information supporting accessing Internet;
Otherwise, by the local area network (LAN) DNS that each grouping is corresponding, destination address is resolved successively, from the grouping that the local area network (LAN) DNS to destination address successfully resolved is corresponding, selects a WIFI access point as the WIFI access point mated with described destination address.
5. method as claimed in claim 3, is characterized in that, described access range information comprises the information whether the access network segment of WIFI access point support and this WIFI access point support accessing Internet;
Determine specifically to comprise the WIFI access point that access range information is mated with described destination address:
If described destination address is internet protocol address, then judge whether to exist that access range information mates with described destination address second divides into groups;
If there is the second grouping, then from the second grouping, select a WIFI access point as the WIFI access point mated with described destination address;
Otherwise, select a WIFI access point as the WIFI access point mated with described destination address from comprising access range information to have in the grouping of the information supporting accessing Internet.
6. the method as described in as arbitrary in Claims 1 to 5, it is characterized in that, indicating terminal, by the described WIFI access point access network determined, specifically comprises:
Indicating terminal is greater than the WIFI access point access network of setting threshold value by the access capability value selected.
7. select a device for WIFI access point access network, it is characterized in that, this device comprises:
Destination address determination module, for when receiving the network connecting request of terminal, determines the destination address comprised in described network connecting request, the corresponding objective network of described destination address;
Available WIFI access point determination module, for determining WIFI access point available in environment residing for described terminal, and determine the access range information of each available WIFI access point, described access range information comprises the information whether the access network segment of WIFI access point support and this WIFI access point support accessing Internet;
Access point decision-making module, for the access range information of the described destination address determined with each the available WIFI access point determined is mated, determine the WIFI access point that access range information is mated with described destination address, and, for determining the access capability value of each WIFI access point mated with described destination address, and access capability value is selected to be greater than a WIFI access point of setting threshold value;
WIFI link block, is used to indicate the described WIFI access point access network of terminal by determining;
Wherein, described access point decision-making module, specifically for determining the access capability value of WIFI access point according to following formula:
R = S S ‾ + Q Q ‾ + 1 B
Wherein, R represents the access capability value of the WIFI access point determining access capability value; the mean value of each WIFI access point signals intensity of objective network can be reached for access scope; the mean value of each WIFI access point signals quality of objective network can be reached for access scope; S represents the signal strength signal intensity of the WIFI access point determining access capability value; Q represents the signal quality of the WIFI access point determining access capability value; B represents and determines the bandwidth rank of the WIFI access point of access capability value in each WIFI access point mated with described destination address.
8. device as claimed in claim 7, is characterized in that,
Described available WIFI access point determination module, specifically for determining WIFI access points all in environment residing for terminal, and wherein will not need authentication, or need authentication but the WIFI access point having configured corresponding authorization information in described terminal is defined as available WIFI access point, and determine the access range information of each available WIFI access point.
9. device as claimed in claim 7, it is characterized in that, described device also comprises:
Grouping module, for the access range information according to each the available WIFI access point determined, is divided in same grouping by available WIFI access point identical for access range information;
Described access point decision-making module, comprises specifically for determining the grouping accessing range information and mate with described destination address, and using a WIFI access point in this grouping determined as the WIFI access point mated with described destination address.
10. device as claimed in claim 9, is characterized in that,
Described access point decision-making module, when whether the access network segment and this WIFI access point specifically for comprising the support of WIFI access point in described access range information support the information of accessing Internet, if described destination address is domain-name information, then by internet domain name system DNS, destination address is resolved, if successfully resolved, then from the first grouping, select a WIFI access point as the WIFI access point mated with described destination address, the information supporting accessing Internet is had in the access range information of the WIFI access point comprised in described first grouping, otherwise, by the local area network (LAN) DNS that each grouping is corresponding, destination address is resolved successively, from the grouping that the local area network (LAN) DNS to destination address successfully resolved is corresponding, select a WIFI access point as the WIFI access point mated with described destination address.
11. devices as claimed in claim 9, is characterized in that,
Described access point decision-making module, when whether the access network segment and this WIFI access point specifically for comprising the support of WIFI access point in described access range information support the information of accessing Internet, if described destination address is internet protocol address, then judge whether to exist that access range information mates with described destination address second divides into groups, if there is the second grouping, then from the second grouping, select a WIFI access point as the WIFI access point mated with described destination address, otherwise, select a WIFI access point as the WIFI access point mated with described destination address from comprising access range information to have in the grouping of the information supporting accessing Internet.
12. as arbitrary in claim 7 ~ 11 as described in device, it is characterized in that,
Described WIFI link block, is greater than the WIFI access point access network of setting threshold value by the access capability value selected specifically for indicating terminal.
CN201010264363.8A 2010-08-26 2010-08-26 Method and device for selecting WIFI (Wireless Fidelity) access point to access to network CN102378303B (en)

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