CN104936255A - Wireless access control method, device, router and terminal - Google Patents
Wireless access control method, device, router and terminal Download PDFInfo
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- CN104936255A CN104936255A CN201510370019.XA CN201510370019A CN104936255A CN 104936255 A CN104936255 A CN 104936255A CN 201510370019 A CN201510370019 A CN 201510370019A CN 104936255 A CN104936255 A CN 104936255A
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- signal intensity
- message
- signal strength
- terminal
- threshold value
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
- H04W48/06—Access restriction performed under specific conditions based on traffic conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The disclosure relates to a wireless access control method, a wireless access control device, a wireless access control router and a wireless access control terminal. The method comprises the steps as follows: determining first signal strength of a related terminal; judging whether the first signal strength is lower than a preset signal strength threshold value; reducing the power for transmitting a management message while judging that the first signal strength is lower than the preset signal strength threshold value so that the terminal could be dissociated from AP while detecting that the second signal strength of the related AP is lower than a roam threshold value. By using the embodiment of the disclosure, the terminal could be dissociated from the AP with relative weak signal strength without manual manipulation of a user and related to the AP with better signal strength in a wireless local area network, thereby improving online experience of the user and ensuring the performance of the whole network.
Description
Technical field
The disclosure relates to network communication technology field, particularly relates to a kind of wireless access control method, device, router and terminal.
Background technology
In order to expand the coverage of network, usual user can use two or more WAP (wireless access point) (Access Point, AP) WLAN (wireless local area network) (Wireless Local Area Network is formed, WLAN), for wireless terminal device (Station, STA) provides service on net.During terminal association wireless network, generally can chosen distance comparatively near, the AP that signal strength signal intensity is stronger.
In correlation technique, when terminal is in a wireless local area network away from the AP associated by it, and when the AP stronger apart from another signal strength signal intensity is nearer, can not above automatic roaming to the better AP of signal strength signal intensity, need user's manual switchover, cause user surf the Net experience poor, performance of the entire network is also lower.
Summary of the invention
Present disclose provides wireless access control method, device, router and terminal, to solve in the WLAN (wireless local area network) that forms at multiple AP in correlation technique, terminal can not be roamed into the online that the stronger AP of signal brings and experience the problems such as poor by the AP be associated.
According to the first aspect of disclosure embodiment, a kind of wireless access control method is provided, comprises:
First signal strength signal intensity of the terminal associated by detection;
Judge that whether described first signal strength signal intensity is lower than the signal strength threshold preset;
When being judged as described first signal strength signal intensity lower than described signal strength threshold, reduce the power sending administrative message, to make described terminal when the secondary signal intensity of associated wireless access point AP being detected lower than roaming threshold value, releasing associates with described AP's.
Optionally, the first signal strength signal intensity of the terminal associated by described detection, comprising:
Receive the message from associated terminal;
Determine the first signal strength signal intensity of described terminal based on described message, described message comprises any one in administrative message, data message and control message.
Optionally, the described power reducing transmission administrative message, comprising:
The power sending administrative message is reduced in units of predetermined power;
Detect described terminal receiving the first signal strength signal intensity after the administrative message reducing transmitted power;
Whether the first signal strength signal intensity detected by judgement is lower than the first signal strength signal intensity detected last time;
When being judged as the first detected signal strength signal intensity lower than the first signal strength signal intensity detected last time, in units of described predetermined power, again reduce the power sending described administrative message.
Optionally, the described power reducing transmission administrative message, comprising:
Obtain the roaming threshold value that described terminal is arranged;
Using not higher than the signal strength signal intensity of described roaming threshold value as its own signal intensity;
The power sending administrative message is determined based on described its own signal intensity.
Optionally, the described power reducing transmission administrative message, comprising:
Obtain the difference between the described secondary signal intensity of the described AP that described terminal calculates and described roaming threshold value;
The power sending administrative message is reduced based on described difference.
Optionally, after described reduction sends the power of administrative message, described method also comprises:
When detecting with described terminal disassociation, recover the power sending described administrative message.
Optionally, after described reduction sends the power of administrative message, described method also comprises:
When described first signal strength signal intensity being detected higher than described signal strength threshold, recover the power sending described administrative message.
Optionally, described administrative message comprises beacon message and/or uni-cast probe message.
According to the second aspect of disclosure embodiment, a kind of wireless access control method is provided, comprises:
The secondary signal intensity of the AP associated by detection;
Judge that whether described secondary signal intensity is lower than the roaming threshold value preset;
When being judged as described secondary signal intensity lower than described roaming threshold value, releasing associates with described AP's, and the transmitted power that described secondary signal intensity reduces administrative message lower than described roaming threshold value due to described AP causes.
Optionally, the secondary signal intensity of the AP associated by described detection, comprising:
Receive the message from described AP;
Determine the secondary signal intensity of described AP based on described message, described message comprises beacon message or probe messages.
Optionally, before the associating of described releasing and described AP, described method also comprises:
Detect the 3rd signal strength signal intensity of the AP of dereferenced;
Judge that whether described 3rd signal strength signal intensity is higher than described secondary signal intensity;
When being judged as described 3rd signal strength signal intensity higher than described secondary signal intensity, perform associating of described releasing and associated AP.
Optionally, after the associating of described releasing and described AP, described method also comprises:
The AP corresponding with described 3rd signal strength signal intensity associates.
According to the third aspect of disclosure embodiment, a kind of wireless access control apparatus is provided, comprises:
First detection module, for detecting the first signal strength signal intensity of associated terminal;
First judge module, for judging that whether described first signal strength signal intensity is lower than the signal strength threshold preset;
Transmitted power reduces module, for when being judged as described first signal strength signal intensity lower than described signal strength threshold, reduce the power sending administrative message, to make described terminal when the secondary signal intensity of associated wireless access point AP being detected lower than roaming threshold value, releasing associates with described AP's.
Optionally, described first detection module comprises:
First message receives submodule, for receiving the message from associated terminal;
First signal strength signal intensity determination submodule, for determining the first signal strength signal intensity of described terminal based on described message, described message comprises any one in administrative message, data message and control message.
Optionally, described transmitted power reduction module comprises:
First reduces submodule, for reducing the power sending administrative message in units of predetermined power;
First signal strength detection submodule, for detecting described terminal receiving the first signal strength signal intensity after the administrative message reducing transmitted power;
First judges submodule, for judging that whether the first detected signal strength signal intensity is lower than the first signal strength signal intensity detected last time;
Second reduces submodule, for when being judged as the first detected signal strength signal intensity lower than the first signal strength signal intensity detected last time, again reduces the power sending described administrative message in units of described predetermined power.
Optionally, described transmitted power reduction module comprises:
Roaming threshold value obtains submodule, for obtaining the roaming threshold value that described terminal is arranged;
Its own signal intensity determination submodule, for using not higher than the signal strength signal intensity of described roaming threshold value as its own signal intensity;
Transmitted power determination submodule, for determining the power sending administrative message based on described its own signal intensity.
Optionally, described transmitted power reduction module comprises:
Difference obtains submodule, for obtaining the difference between the described secondary signal intensity of the described AP that described terminal calculates and described roaming threshold value;
3rd reduces submodule, for reducing the power sending administrative message based on described difference.
Optionally, described device also comprises:
First transmitted power recovers module, for when detecting with described terminal disassociation, recovers the power sending described administrative message.
Optionally, described device also comprises:
Second transmitted power recovers module, for when described first signal strength signal intensity being detected higher than described signal strength threshold, recovers the power sending described administrative message.
Optionally, described administrative message comprises beacon message and/or uni-cast probe message.
According to the fourth aspect of disclosure embodiment, a kind of wireless access control apparatus is provided, comprises:
Second detection module, for detecting the secondary signal intensity of associated AP;
Second judge module, for judging that whether described secondary signal intensity is lower than the roaming threshold value preset;
Module is removed in association, and for when being judged as described secondary signal intensity lower than described roaming threshold value, releasing associates with described AP's, and the transmitted power that described secondary signal intensity reduces administrative message lower than described roaming threshold value due to described AP causes.
Optionally, described second detection module comprises:
Second message receives submodule, for receiving the message from associated AP;
Secondary signal intensity determination submodule, for determining the secondary signal intensity of described AP based on described message, described message comprises beacon message or probe messages.
Optionally, described device also comprises:
3rd detection module, for detecting the 3rd signal strength signal intensity of the AP of dereferenced;
3rd judge module, for judging that whether described 3rd signal strength signal intensity is higher than described secondary signal intensity;
Then described association removes module when described 3rd judge module is judged as described 3rd signal strength signal intensity higher than described secondary signal intensity, performs associating of described releasing and associated AP.
Optionally, described device also comprises:
Relating module, associates for the AP corresponding with described 3rd signal strength signal intensity.
According to the 5th aspect of disclosure embodiment, a kind of router is provided, comprises: comprising: processor; For the memory of storage of processor executable instruction; Wherein, described processor is configured to:
First signal strength signal intensity of the terminal associated by detection;
Judge that whether described first signal strength signal intensity is lower than the signal strength threshold preset;
When being judged as described first signal strength signal intensity lower than described signal strength threshold, reduce the power sending administrative message, to make described terminal when the secondary signal intensity of associated AP being detected lower than roaming threshold value, releasing associates with described AP's.
According to the 6th aspect of disclosure embodiment, a kind of terminal is provided, comprises: processor; For the memory of storage of processor executable instruction; Wherein, described processor is configured to:
The secondary signal intensity of the AP associated by detection;
Judge that whether described secondary signal intensity is lower than the roaming threshold value preset;
When being judged as described secondary signal intensity lower than described roaming threshold value, releasing associates with described AP's, and the transmitted power that described secondary signal intensity reduces administrative message lower than described roaming threshold value due to described AP causes.
The technical scheme that embodiment of the present disclosure provides can comprise following beneficial effect:
In the disclosure, wireless access point device can when detecting the first signal strength signal intensity of the terminal be associated lower than the signal strength threshold preset, reduce the power sending administrative message, can determine based on the message received that to make terminal the secondary signal intensity of AP reduces, and when secondary signal intensity is lower than roaming threshold value, active releasing associates with AP's, so that in the WLAN (wireless local area network) that two or more AP forms, without the need to user's manual operation, terminal just can remove the better AP of signal strength signal intensity in association WLAN (wireless local area network) automatically, the online improving user is experienced, ensure the performance of whole net.
In the disclosure, wireless access point device can reduce the transmitted power of message in units of predetermined power, and, if after reduction transmitted power, the signal strength signal intensity that end side returns is more weak, so illustrate that the transmitted power reducing message creates effect to terminal, terminal, away from this AP, so can continue the transmitted power reducing message, remove faster and the associating, so that AP better with signal strength signal intensity is associated as early as possible of this AP to enable terminal.
In the disclosure, wireless access point device reduces the mode of the transmitted power of message can also be that the roaming threshold value arranged based on end side determine this transmitted power, the signal strength signal intensity of the AP that this terminal can detect by this mode is faster reduced to below roaming threshold value, without the need to repeatedly reducing transmitted power.
In the disclosure, wireless access point device can obtain the secondary signal intensity of the AP that end side calculates and the difference of roaming threshold value, and the transmitted power of message is reduced based on this difference, the signal strength signal intensity that also can realize AP terminal detected under this mode is faster reduced to below roaming threshold value, without the need to repeatedly reducing transmitted power.
In the disclosure, wireless access point device after terminal and its disassociation, or when the first signal strength signal intensity detected is higher than signal strength threshold, can recover the transmitted power of message, experiences to avoid the online having influence on other-end.
In the disclosure, terminal can when detecting the secondary signal intensity of the AP be associated lower than roaming threshold value, and with this AP disassociation, the transmitted power reducing administrative message due to AP that dies down of this secondary signal intensity causes.Terminal iff in distance away from associated AP, also the secondary signal weakened that terminal detects can be made, but the secondary signal intensity detected to make terminal is more weak, AP reduces the transmitted power of message, like this, terminal can faster with this AP disassociation, with the better AP of correlation signal intensity.The online improving user is thus experienced.
In the disclosure, terminal can when detecting the better AP of other signal strength signal intensities, then remove and the associating of the AP that is associated, and to ensure after disassociation, can associate by AP better with signal strength signal intensity as early as possible, ensure that smooth online is experienced.
The administrative message reducing transmitted power in the disclosure comprises beacon message and/or uni-cast probe message, and the administrative message supported due to terminal comprises this two kinds of messages, the terminal that the transmitted power thus reducing these two kinds of messages can be compatible all.
Should be understood that, it is only exemplary and explanatory that above general description and details hereinafter describe, and can not limit the disclosure.
Accompanying drawing explanation
Accompanying drawing to be herein merged in specification and to form the part of this specification, shows and meets embodiment of the present disclosure, and is used from specification one and explains principle of the present disclosure.
Fig. 1 is a kind of wireless access control method flow chart of the disclosure according to an exemplary embodiment.
Fig. 2 is the another kind of wireless access control method flow chart of the disclosure according to an exemplary embodiment.
Fig. 3 is a kind of wireless access control application scenarios schematic diagram of the disclosure according to an exemplary embodiment.
Fig. 4 is a kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment.
Fig. 5 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment.
Fig. 6 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment.
Fig. 7 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment.
Fig. 8 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment.
Fig. 9 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment.
Figure 10 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment.
Figure 11 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment.
Figure 12 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment.
Figure 13 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment.
Figure 14 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment.
Figure 15 is a kind of structural representation for wireless access control apparatus of the disclosure according to an exemplary embodiment.
Figure 16 is the structural representation of the another kind of the disclosure according to an exemplary embodiment for wireless access control apparatus.
Embodiment
Here will be described exemplary embodiment in detail, its sample table shows in the accompanying drawings.When description below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawing represents same or analogous key element.Execution mode described in following exemplary embodiment does not represent all execution modes consistent with the disclosure.On the contrary, they only with as in appended claims describe in detail, the example of apparatus and method that aspects more of the present disclosure are consistent.
The term used in the disclosure is only for the object describing specific embodiment, and the not intended to be limiting disclosure." one ", " described " and " being somebody's turn to do " of the singulative used in disclosure and the accompanying claims book is also intended to comprise most form, unless context clearly represents other implications.It is also understood that term "and/or" used herein refer to and comprise one or more project of listing be associated any or all may combine.
Term first, second, third, etc. may be adopted although should be appreciated that to describe various information in the disclosure, these information should not be limited to these terms.These terms are only used for the information of same type to be distinguished from each other out.Such as, when not departing from disclosure scope, the first information also can be called as the second information, and similarly, the second information also can be called as the first information.Depend on linguistic context, word as used in this " if " can be construed as into " ... time " or " when ... time " or " in response to determining ".
As shown in Figure 1, Fig. 1 is a kind of file transmitting method flow chart according to an exemplary embodiment, and the method may be used for, in wireless access point device, comprising the following steps:
In a step 101, the first signal strength signal intensity of the terminal associated by detection.
Executive agent in the disclosure can be that AP, this AP can for wherein any one AP in the WLAN (wireless local area network) that is made up of two or more AP; This executive agent can also for be connected with each AP, for controlling the wireless controller (Access Controller, AC) of each AP, be described for AP in the disclosure.
Terminal in the disclosure can be any intelligent terminal with function of surfing the Net, such as, can be specially mobile phone, panel computer, personal digital assistant (Personal Digital Assistant, PDA) etc.Wherein, terminal can pass through WLAN (wireless local area network) couple in router, and by the server on router access public network.
In the wireless network, terminal will access this wireless network will send probe requests thereby message to AP usually, terminal also can send probe requests thereby message in the mode of clean culture in a broadcast manner, mode for clean culture in the disclosure is described, usual terminal sends probe requests thereby (Probe request) message to the AP that signal strength signal intensity in this wireless network is the strongest, and then this AP is to this terminal replies probe response (Proberesponse) message.When needs certification ability access of radio network, terminal also needs to send certification (Authentication) message, such as password to AP, by AP, authentication information is verified, when certification is passed through, this AP of terminal association, and the wireless network accessing that this AP provides.
In disclosure step, the terminal be associated with this AP may have multiple, the signal strength signal intensity of each terminal of AP Real-Time Monitoring.In order to the signal strength signal intensity from AP detected with terminal is distinguished mutually, the signal strength signal intensity carrying out self terminal detected by AP in the disclosure is called the first signal strength signal intensity, and the signal strength signal intensity from AP terminal detected is called secondary signal intensity.First signal strength signal intensity of terminal can for signal strength signal intensity instruction (Received Signal Strength Indication, RSSI) such as received, and in disclosure step, AP, based on the message carrying out self terminal, obtains the signal strength signal intensity of terminal.
In the disclosure, after terminal accesses the wireless network that this AP provides, and message mutual between AP comprises polytype.Such as in 802.11 wireless networks, type of message comprises data message, administrative message and controls message.Administrative message can be subdivided into again the message of the subtypes such as beacon (Beacon) message, probe requests thereby message, detection response message and message identifying.AP can both obtain the first signal strength signal intensity of terminal by the message carrying out above-mentioned any type of self terminal received.
In a step 102, judge that whether the first signal strength signal intensity is lower than signal strength threshold.
In disclosure step, signal strength threshold sets based on empirical value, the signal strength signal intensity that when signal strength threshold can be understood as the position that terminal is positioned at from the AP be associated is distant, AP can detect, on the position that this is far away, the wireless signal strength of this AP that terminal can receive is more weak, can not obtain experience of surfing the Net preferably.
In step 103, when being judged as the first signal strength signal intensity lower than signal strength threshold, reducing and sending the power of administrative message to this terminal, to make terminal when the secondary signal intensity from AP being detected lower than roaming threshold value, releasing associates with this AP's.
When AP is judged as that this first signal strength signal intensity is not less than signal strength threshold, illustrate that terminal distance AP is comparatively near, AP is left intact.
When AP is judged as this signal strength signal intensity lower than signal strength threshold, illustrate that terminal distance AP is comparatively far away, or terminal is just away from this AP, AP reduces the transmitted power sending to the administrative message of this terminal in this case.
In the disclosure, this administrative message can comprise beacon message and/or the uni-cast probe message for this terminal.
Due to the difference of manufacturer terminal, the difference of terminal type, the type of message that each terminal is supported is also different, such as, use the terminal of Intel network interface card to support beacon message, uses the terminal of some other network interface cards to support probe messages.Administrative message in the disclosure can comprise beacon message and/or uni-cast probe message.When uncertain present terminal support be which kind of message, in order to can compatible various dissimilar terminal, AP can reduce the transmitted power of beacon message and uni-cast probe message.
In the disclosure, the mode that AP reduces the transmitted power of administrative message can comprise:
Reduce the transmitted power of administrative message, after terminal sends message, then detect the first signal strength signal intensity of self terminal, if the first signal strength signal intensity that this first signal intensity ratio detected detected last time is low, then continue the transmitted power reducing administrative message.Wherein, AP can reduce the transmitted power of administrative message in units of predetermined power such as 1db ~ 2db.
If the first signal strength signal intensity that this first signal intensity ratio detected detected last time is low, can illustrate that terminal is more farther apart from associated AP than last time, thus AP can continue to reduce transmitted power, removes faster be connected, with the AP that correlation signal intensity is stronger to enable terminal with this AP.
In the disclosure, the mode that AP reduces the transmitted power of administrative message can also comprise:
Obtain the roaming threshold value that terminal is arranged, reduce the transmitted power of administrative message based on roaming threshold value.
Such as, AP using not higher than the secondary signal intensity of signal strength signal intensity as self roaming threshold value, can determine transmitted power.Because administrative message can produce decay in the process sending to terminal, thus the transmitted power of administrative message is determined with the secondary signal intensity not higher than roaming threshold value, terminal just can be made to detect from AP secondary signal intensity lower than roaming threshold value, thus with AP disassociation.
In the disclosure, the mode that AP reduces the transmitted power of administrative message can also comprise:
Obtain terminal the secondary signal intensity from AP calculated and the difference roaming threshold value, AP reduces the transmitted power of administrative message based on this difference.
Such as, AP still reduces transmitted power in units of predetermined power, then after terminal receives the message after this reduction transmitted power, obtain current first signal strength signal intensity from AP, and this current first signal strength signal intensity and roaming threshold value are compared and draw difference, AP continues to reduce transmitted power based on this difference, and this difference obtained to make terminal is not more than 0, can remove as early as possible and the associating of this AP.
In above process, when AP detects terminal and AP disassociation; Or detecting the first signal strength signal intensity grow of self terminal, when this first signal strength signal intensity is higher than signal strength threshold, AP no longer reduces the transmitted power of administrative message, and the transmitted power reduced before recovering.
As shown in Figure 2, Fig. 2 is the another kind of file transmitting method flow chart according to an exemplary embodiment, and the method may be used for, in wireless terminal device, comprising the following steps:
In step 201, the secondary signal intensity of the AP associated by detection.
In conjunction with embodiment illustrated in fig. 1, terminal is associated with AP, after accessing the wireless network that this AP provides, and has the mutual of message between AP.Terminal determines the secondary signal intensity from AP based on the beacon message received or probe messages.
In step 202., judge that whether secondary signal intensity is lower than roaming threshold value.
In the disclosure, terminal is arranged in the WLAN (wireless local area network) be made up of multiple AP, when more weak from the AP signal be associated, and time stronger from the signal of other AP, can remove the connection with the AP be associated, roam on other AP.
In step 203, when being judged as secondary signal intensity lower than roaming threshold value, releasing associates with AP's, and the transmitted power that secondary signal intensity reduces administrative message lower than roaming threshold value due to AP causes.
When terminal judges is secondary signal intensity lower than roaming threshold value, can remove and the associating of this AP.
Remove with before the associating of this AP in terminal, the AP that can detect that signal strength signal intensity is stronger can be judged whether, if be judged as detecting the stronger AP of signal strength signal intensity, can remove and the associating of current AP, and the AP stronger with signal strength signal intensity associates.
For the terminal supporting beacon message, when the transmitted power decline from the beacon message of AP being detected, be judged as that the signal strength signal intensity of AP dies down.Although the terminal of support beacon message also can receive the uni-cast probe message that transmitted power have dropped, but because this terminal only supports beacon message, thus this uni-cast probe message does not affect this terminal, because probe messages is that thus unicast fashion transmission does not also have an impact to other-end.
For the terminal supporting probe messages, when the transmitted power decline from the uni-cast probe message of AP being detected, be judged as that the signal strength signal intensity of AP dies down.Although the terminal of support probe messages also can receive the beacon message that transmitted power have dropped, but beacon message does not have an impact to this terminal, and other of this AP of association are supported to the terminal of beacon messages, if the online that this terminal distance AP more closely would not affect this terminal is experienced, if this terminal can be had influence on, illustrate that this terminal distance AP is comparatively far away, need the AP that correlation signal intensity is stronger.
Terminal can be contrasted by the transmitted power of the transmitted power of message this received and the message received last time, determines that transmitted power declines.
As shown in Figure 3, Fig. 3 is a kind of wireless access control application scenarios schematic diagram of the disclosure according to an exemplary embodiment.In the scene shown in Fig. 3, comprising: AP 1, AP 2 and the millet smart mobile phone as terminal.Wherein AP 1 and AP 2 forms WLAN (wireless local area network), and millet smart mobile phone, after entering this WLAN (wireless local area network), because distance AP1 is nearer, is thus associated with AP 1.AP 1 is by detecting the first signal strength signal intensity of millet smart mobile phone with millet smart mobile phone mutual message.After a period of time, millet smart mobile phone moves to the direction near AP 2, distance AP 1 is more and more far away, at this moment AP 1 detects that the first signal strength signal intensity dies down, first signal strength signal intensity and the signal strength threshold preset are compared, when the first signal strength signal intensity is lower than this signal strength threshold, AP 1 reduces the transmitted power of beacon message and sends to the power of uni-cast probe response message of this millet smart mobile phone, after millet smart mobile phone receives message, the secondary signal weakened of AP 1 detected, secondary signal intensity and roaming threshold value are compared, when secondary signal intensity is lower than roaming threshold value, the 3rd signal strength signal intensity from AP 2 detected, and be judged as that the 3rd signal strength signal intensity is higher than secondary signal intensity, thus remove and the associating of AP 1, and be associated with AP 2.
In application scenarios shown in Fig. 3, the detailed process realizing wireless access control see aforementioned to the description in Fig. 1 and Fig. 2, can not repeat them here.
Corresponding with aforementioned wireless access control method embodiment, the disclosure additionally provides the embodiment of wireless access control apparatus and the router applied and terminal.
As shown in Figure 4, Fig. 4 is a kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment, and this device can comprise: first detection module 410, first judge module 420 and transmitted power reduce module 430.
Wherein, first detection module 410, is configured to the first signal strength signal intensity of the terminal associated by detecting;
First judge module 420, is configured to judge that whether the first signal strength signal intensity that first detection module 410 detects is lower than signal strength threshold;
Transmitted power reduces module 430, be configured to when the first judge module 420 is judged as the first signal strength signal intensity lower than signal strength threshold, reduce the power sending administrative message, to make terminal when the secondary signal intensity of associated AP being detected lower than roaming threshold value, releasing associates with AP's.
In above-described embodiment, wireless access point device can when detecting the first signal strength signal intensity of the terminal be associated lower than the signal strength threshold preset, reduce the power sending administrative message, can determine based on the message received that to make terminal the secondary signal intensity of AP reduces, and when secondary signal intensity is lower than roaming threshold value, active releasing associates with AP's, so that in the WLAN (wireless local area network) that two or more AP forms, without the need to user's manual operation, terminal just can remove the better AP of correlation signal intensity automatically, the online improving user is experienced, ensure the performance of whole net.
As shown in Figure 5, Fig. 5 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment, this embodiment is on aforementioned basis embodiment illustrated in fig. 4, and first detection module 410 can comprise: the first message receives submodule 411 and the first signal strength signal intensity determination submodule 412.
First message receives submodule 411, is configured to receive the message from associated terminal;
First signal strength signal intensity determination submodule 412, is configured to the first signal strength signal intensity receiving the message determination terminal that submodule 411 receives based on the first message, and this message comprises any one in administrative message, data message and control message.
In above-described embodiment, wireless access point device can determine the first signal strength signal intensity of terminal easily based on any one message carrying out self terminal.
As shown in Figure 6, Fig. 6 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment, this embodiment is on aforementioned basis embodiment illustrated in fig. 4, and transmitted power reduces module 430 and can comprise: first reduces submodule 431, first signal strength detection submodule 432, first judges that submodule 433 and second reduces submodule 434.
First reduces submodule 431, is configured in units of predetermined power, reduce the power sending administrative message;
First signal strength detection submodule 432, for sense terminals receiving the first signal strength signal intensity after the administrative message reducing transmitted power;
First judges submodule 433, be configured to judge detected by the first signal strength signal intensity whether lower than the first signal strength signal intensity detected last time;
Second reduces submodule 434, is configured to when first judges that submodule 433 is judged as the first detected signal strength signal intensity lower than the first signal strength signal intensity detected last time, again reduces the power sending administrative message in units of predetermined power.
In above-described embodiment, wireless access point device can reduce the transmitted power of message in units of predetermined power, and, if after reduction transmitted power, the signal strength signal intensity that end side returns is more weak, so illustrates that the transmitted power reducing message creates effect to terminal, terminal is away from this AP, so can continue to reduce the transmitted power of message, remove faster and the associating, so that AP better with signal strength signal intensity is associated as early as possible of this AP to enable terminal.
As shown in Figure 7, Fig. 7 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment, this embodiment is on aforementioned basis embodiment illustrated in fig. 4, and transmitted power reduces module 430 and can comprise: roaming threshold value obtains submodule 435, its own signal intensity determination submodule 436 and transmitted power determination submodule 437.
Roaming threshold value obtains submodule 435, is configured to obtain the roaming threshold value that terminal is arranged;
Its own signal intensity determination submodule 436, is configured to not obtain the signal strength signal intensity of the roaming threshold value that submodule 435 obtains as its own signal intensity higher than roaming threshold value;
Transmitted power determination submodule 437, its own signal intensity being configured to determine based on its own signal intensity determination submodule 436 determines the power sending administrative message.
In above-described embodiment, the mode that wireless access point device reduces the transmitted power of message can also determine this transmitted power for the roaming threshold value arranged based on end side, the signal strength signal intensity of the AP that this terminal can detect by this mode is faster reduced to below roaming threshold value, without the need to repeatedly reducing transmitted power.
As shown in Figure 8, Fig. 8 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment, this embodiment is on aforementioned basis embodiment illustrated in fig. 4, and transmitted power reduces module 430 and can comprise: difference obtains submodule 438 and the 3rd and reduces submodule 439.
Difference obtains submodule 438, is configured to obtain the difference between the secondary signal intensity of the AP that terminal calculates and roaming threshold value;
3rd reduces submodule 439, is configured to the power obtaining the difference reduction transmission administrative message that submodule 438 obtains based on difference.
Wherein, the administrative message reducing transmitted power comprises beacon message and/or uni-cast probe message, and the administrative message supported due to terminal comprises this two kinds of messages, the terminal that the transmitted power thus reducing these two kinds of messages can be compatible all.
In above-described embodiment, wireless access point device can obtain the secondary signal intensity of the AP that end side calculates and the difference of roaming threshold value, and the transmitted power of message is reduced based on this difference, the signal strength signal intensity that also can realize AP terminal detected under this mode is faster reduced to below roaming threshold value, without the need to repeatedly reducing transmitted power.
As shown in Figure 9, Fig. 9 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment, and this embodiment is on aforementioned basis embodiment illustrated in fig. 4, and this device can also comprise: the first transmitted power recovers module 440.
First transmitted power recovers module 440, is configured to when detecting with terminal disassociation, recovers the power sending administrative message.
In above-described embodiment, router after terminal and its disassociation, can recover the transmitted power of message, experiences to avoid the online having influence on other-end.
As shown in Figure 10, Figure 10 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment, and this embodiment is on aforementioned basis embodiment illustrated in fig. 4, and this device can also comprise: the second transmitted power recovers module 450.
Second transmitted power recovers module 450, is configured to when the first signal strength signal intensity detected is higher than signal strength threshold, recovers the power sending administrative message.
In above-described embodiment, wireless access point device after the first signal strength signal intensity of terminal is higher than signal strength threshold, can recover the transmitted power of message, experiences to avoid the online having influence on other-end.
Wireless access control apparatus embodiment shown in above-mentioned Fig. 4 to Figure 10 can be applied in the router.
As shown in figure 11, Figure 11 is a kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment, and this device can comprise: the second detection module 510, second judge module 520 removes module 530 with associating.
Wherein, the second detection module 510, is configured to the secondary signal intensity of the AP associated by detecting;
Second judge module 520, is configured to judge that whether secondary signal intensity that the second detection module 510 detects is lower than roaming threshold value;
Module 530 is removed in association, and be configured to when the second judge module 520 is judged as secondary signal intensity lower than roaming threshold value, releasing associates with AP's, and the transmitted power that secondary signal intensity reduces administrative message lower than roaming threshold value due to AP causes.
In above-described embodiment, terminal is when the secondary signal intensity of the AP be associated being detected lower than roaming threshold value, and with this AP disassociation, the transmitted power reducing administrative message due to AP that dies down of this secondary signal intensity causes.Terminal iff in distance away from associated AP, also the secondary signal weakened that terminal detects can be made, but the secondary signal intensity detected to make terminal is more weak, AP reduces the transmitted power of message, like this, terminal can faster with this AP disassociation, with the better AP of correlation signal intensity.The online improving user is thus experienced.
As shown in figure 12, Figure 12 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment, this embodiment is on aforementioned basis embodiment illustrated in fig. 11, and the second detection module 510 can comprise: the second message receives submodule 511 and secondary signal intensity determination submodule 512.
Second message receives submodule 511, is configured to receive the message from associated AP;
Secondary signal intensity determination submodule 512, the message being configured to receive based on the second message reception submodule 511 determines the secondary signal intensity of AP, and this message comprises beacon message or probe messages.
In above-described embodiment, terminal can based on the secondary signal intensity of the determination AP of the message from AP.
As shown in figure 13, Figure 13 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment, this embodiment is on aforementioned basis embodiment illustrated in fig. 11, and this device can also comprise: the 3rd detection module 540 and the 3rd judge module 550.
3rd detection module 540, is configured to the 3rd signal strength signal intensity of the AP detecting dereferenced;
3rd judge module 550, is configured to judge that whether the 3rd signal strength signal intensity of the 3rd detection module 540 detection is higher than secondary signal intensity;
Then association removes module 530 when the 3rd judge module 550 is judged as the 3rd signal strength signal intensity higher than secondary signal intensity, and execution releasing associates with associated AP's.
As shown in figure 14, Figure 14 is the another kind of wireless access control apparatus block diagram of the disclosure according to an exemplary embodiment, and this embodiment is on aforementioned basis embodiment illustrated in fig. 13, and this device can also comprise: relating module 560.
Relating module 560, is configured to the AP corresponding with the 3rd signal strength signal intensity and associates.
In above-described embodiment, terminal can when detecting the better AP of other signal strength signal intensities, then remove and the associating of the AP that is associated, and to ensure after disassociation, can associate by AP better with signal strength signal intensity as early as possible, ensure that smooth online is experienced.
Wireless access control apparatus embodiment shown in above-mentioned Figure 11-Figure 14 can be applied in the terminal.
In said apparatus, the implementation procedure of the function and efficacy of unit specifically refers to the implementation procedure of corresponding step in said method, does not repeat them here.
For device embodiment, because it corresponds essentially to embodiment of the method, so relevant part illustrates see the part of embodiment of the method.Device embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of module wherein can be selected according to the actual needs to realize the object of disclosure scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
Accordingly, the disclosure also provides a kind of router, and described router includes processor; For the memory of storage of processor executable instruction; Wherein, described processor is configured to: the first signal strength signal intensity of the terminal associated by detection; Judge that whether described first signal strength signal intensity is lower than signal strength threshold; When being judged as described first signal strength signal intensity lower than described signal strength threshold, reduce the power sending administrative message, to make described terminal when the secondary signal intensity of associated AP being detected lower than roaming threshold value, releasing associates with described AP's.
Accordingly, the disclosure also provides a kind of terminal, and described terminal includes processor; For the memory of storage of processor executable instruction; Wherein, described processor is configured to: the secondary signal intensity of the AP associated by detection; Judge that whether described secondary signal intensity is lower than roaming threshold value; When being judged as described secondary signal intensity lower than described roaming threshold value, releasing associates with described AP's, and the transmitted power that described secondary signal intensity reduces administrative message lower than described roaming threshold value due to described AP causes.
As shown in figure 15, Figure 15 is a kind of structural representation for wireless access control apparatus 1500 according to an exemplary embodiment.Such as, device 1500 may be provided in a routing device.With reference to Figure 15, device 1500 comprises processing components 1522, and it comprises one or more processor further, and the memory resource representated by memory 1532, can such as, by the instruction of the execution of processing unit 1522, application program for storing.The application program stored in memory 1532 can comprise each module corresponding to one group of instruction one or more.In addition, processing components 1522 is configured to perform instruction, to perform the method for above-mentioned accessed web page.
Device 1500 can also comprise the power management that a power supply module 1526 is configured to final controlling element 1500, and a wired or wireless network interface 1550 is configured to device 1500 to be connected to network, and input and output (I/O) interface 1558.Device 1500 can operate the operating system based on being stored in memory 1532, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or similar.
As shown in figure 16, Figure 16 is a kind of structural representation for wireless access control apparatus 1600 of the disclosure according to an exemplary embodiment.Such as, device 1600 can be the mobile phone with routing function, computer, digital broadcast terminal, messaging devices, game console, flat-panel devices, Medical Devices, body-building equipment, personal digital assistant etc.
With reference to Figure 16, device 1600 can comprise following one or more assembly: processing components 1602, memory 1604, power supply module 1606, multimedia groupware 1608, audio-frequency assembly 1610, the interface 1612 of I/O (I/O), sensor cluster 1614, and communications component 1616.
The integrated operation of the usual control device 1600 of processing components 1602, such as with display, call, data communication, camera operation and record operate the operation be associated.Processing components 1602 can comprise one or more processor 1620 to perform instruction, to complete all or part of step of above-mentioned method.In addition, processing components 1602 can comprise one or more module, and what be convenient between processing components 1602 and other assemblies is mutual.Such as, processing components 1602 can comprise multi-media module, mutual with what facilitate between multimedia groupware 1608 and processing components 1602.
Memory 1604 is configured to store various types of data to be supported in the operation of device 1600.The example of these data comprises for any application program of operation on device 1600 or the instruction of method, contact data, telephone book data, message, picture, video etc.Memory 1604 can be realized by the volatibility of any type or non-volatile memory device or their combination, as static RAM (SRAM), Electrically Erasable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory EPROM (EPROM), programmable read only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, disk or CD.
The various assemblies that power supply module 1606 is device 1600 provide electric power.Power supply module 1606 can comprise power-supply management system, one or more power supply, and other and the assembly generating, manage and distribute electric power for device 1600 and be associated.
Multimedia groupware 1608 is included in the screen providing an output interface between described device 1600 and user.In certain embodiments, screen can comprise liquid crystal display (LCD) and touch panel (TP).If screen comprises touch panel, screen may be implemented as touch-screen, to receive the input signal from user.Touch panel comprises one or more touch sensor with the gesture on sensing touch, slip and touch panel.Described touch sensor can the border of not only sensing touch or sliding action, but also detects the duration relevant to described touch or slide and pressure.In certain embodiments, multimedia groupware 1608 comprises a front-facing camera and/or post-positioned pick-up head.When device 1600 is in operator scheme, during as screening-mode or video mode, front-facing camera and/or post-positioned pick-up head can receive outside multi-medium data.Each front-facing camera and post-positioned pick-up head can be fixing optical lens systems or have focal length and optical zoom ability.
Audio-frequency assembly 1610 is configured to export and/or input audio signal.Such as, audio-frequency assembly 1610 comprises a microphone (MIC), and when device 1600 is in operator scheme, during as call model, logging mode and speech recognition mode, microphone is configured to receive external audio signal.The audio signal received can be stored in memory 1604 further or be sent via communications component 1616.In certain embodiments, audio-frequency assembly 1610 also comprises a loud speaker, for output audio signal.
I/O interface 1612 is for providing interface between processing components 1602 and peripheral interface module, and above-mentioned peripheral interface module can be keyboard, some striking wheel, button etc.These buttons can include but not limited to: home button, volume button, start button and locking press button.
Sensor cluster 1614 comprises one or more transducer, for providing the state estimation of various aspects for device 1600.Such as, sensor cluster 1614 can detect the opening/closing state of device 1600, the relative positioning of assembly, such as described assembly is display and the keypad of device 1600, the position of all right checkout gear 1600 of sensor cluster 1614 or device 1600 assemblies changes, the presence or absence that user contacts with device 1600, the variations in temperature of device 1600 orientation or acceleration/deceleration and device 1600.Sensor cluster 1614 can comprise proximity transducer, be configured to without any physical contact time detect near the existence of object.Sensor cluster 1614 can also comprise optical sensor, as CMOS or ccd image sensor, for using in imaging applications.In certain embodiments, this sensor cluster 1614 can also comprise acceleration transducer, gyro sensor, Magnetic Sensor, pressure sensor, microwave remote sensor or temperature sensor.
Communications component 1616 is configured to the communication being convenient to wired or wireless mode between device 1600 and other equipment.Device 1600 can access the wireless network based on communication standard, as WiFi, 2G or 3G, or their combination.In one exemplary embodiment, communications component 1616 receives from the broadcast singal of external broadcasting management system or broadcast related information via broadcast channel.In one exemplary embodiment, described communications component 1616 also comprises near-field communication (NFC) module, to promote junction service.Such as, can based on radio-frequency (RF) identification (RFID) technology in NFC module, Infrared Data Association (IrDA) technology, ultra broadband (UWB) technology, bluetooth (BT) technology and other technologies realize.
In the exemplary embodiment, device 1600 can be realized, for performing said method by one or more application specific integrated circuit (ASIC), digital signal processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), controller, microcontroller, microprocessor or other electronic components.
Those skilled in the art, at consideration specification and after putting into practice invention disclosed herein, will easily expect other embodiment of the present disclosure.The disclosure is intended to contain any modification of the present disclosure, purposes or adaptations, and these modification, purposes or adaptations are followed general principle of the present disclosure and comprised the undocumented common practise in the art of the disclosure or conventional techniques means.Specification and embodiment are only regarded as exemplary, and true scope of the present disclosure and spirit are pointed out by claim below.
The foregoing is only preferred embodiment of the present disclosure, not in order to limit the disclosure, all within spirit of the present disclosure and principle, any amendment made, equivalent replacements, improvement etc., all should be included within scope that the disclosure protects.
Claims (26)
1. a wireless access control method, is characterized in that, comprising:
First signal strength signal intensity of the terminal associated by detection;
Judge that whether described first signal strength signal intensity is lower than the signal strength threshold preset;
When being judged as described first signal strength signal intensity lower than described signal strength threshold, reduce the power sending administrative message, to make described terminal when the secondary signal intensity of associated wireless access point AP being detected lower than roaming threshold value, releasing associates with described AP's.
2. method according to claim 1, is characterized in that, the first signal strength signal intensity of the terminal associated by described detection, comprising:
Receive the message from associated terminal;
Determine the first signal strength signal intensity of described terminal based on described message, described message comprises any one in administrative message, data message and control message.
3. method according to claim 1, is characterized in that, the described power reducing transmission administrative message, comprising:
The power sending administrative message is reduced in units of predetermined power;
Detect described terminal receiving the first signal strength signal intensity after the administrative message reducing transmitted power;
Whether the first signal strength signal intensity detected by judgement is lower than the first signal strength signal intensity detected last time;
When being judged as the first detected signal strength signal intensity lower than the first signal strength signal intensity detected last time, in units of described predetermined power, again reduce the power sending described administrative message.
4. method according to claim 1, is characterized in that, the described power reducing transmission administrative message, comprising:
Obtain the roaming threshold value that described terminal is arranged;
Using not higher than the signal strength signal intensity of described roaming threshold value as its own signal intensity;
The power sending administrative message is determined based on described its own signal intensity.
5. method according to claim 1, is characterized in that, the described power reducing transmission administrative message, comprising:
Obtain the difference between the described secondary signal intensity of the described AP that described terminal calculates and described roaming threshold value;
The power sending administrative message is reduced based on described difference.
6. method according to claim 1, is characterized in that, after described reduction sends the power of administrative message, described method also comprises:
When detecting with described terminal disassociation, recover the power sending described administrative message.
7. method according to claim 1, is characterized in that, after described reduction sends the power of administrative message, described method also comprises:
When described first signal strength signal intensity being detected higher than described signal strength threshold, recover the power sending described administrative message.
8. the method according to any one of claim 1-7, is characterized in that, described administrative message comprises beacon message and/or uni-cast probe message.
9. a wireless access control method, is characterized in that, comprising:
The secondary signal intensity of the AP associated by detection;
Judge that whether described secondary signal intensity is lower than the roaming threshold value preset;
When being judged as described secondary signal intensity lower than described roaming threshold value, releasing associates with described AP's, and the transmitted power that described secondary signal intensity reduces administrative message lower than described roaming threshold value due to described AP causes.
10. method according to claim 9, is characterized in that, the secondary signal intensity of the AP associated by described detection, comprising:
Receive the message from described AP;
Determine the secondary signal intensity of described AP based on described message, described message comprises beacon message or probe messages.
11. methods according to claim 9, is characterized in that, before the associating of described releasing and described AP, described method also comprises:
Detect the 3rd signal strength signal intensity of the AP of dereferenced;
Judge that whether described 3rd signal strength signal intensity is higher than described secondary signal intensity;
When being judged as described 3rd signal strength signal intensity higher than described secondary signal intensity, perform associating of described releasing and associated AP.
12. methods according to claim 11, is characterized in that, after the associating of described releasing and described AP, described method also comprises:
The AP corresponding with described 3rd signal strength signal intensity associates.
13. 1 kinds of wireless access control apparatus, is characterized in that, comprising:
First detection module, for detecting the first signal strength signal intensity of associated terminal;
First judge module, for judging that whether described first signal strength signal intensity is lower than the signal strength threshold preset;
Transmitted power reduces module, for when being judged as described first signal strength signal intensity lower than described signal strength threshold, reduce the power sending administrative message, to make described terminal when the secondary signal intensity of associated wireless access point AP being detected lower than roaming threshold value, releasing associates with described AP's.
14. devices according to claim 13, is characterized in that, described first detection module comprises:
First message receives submodule, for receiving the message from associated terminal;
First signal strength signal intensity determination submodule, for determining the first signal strength signal intensity of described terminal based on described message, described message comprises any one in administrative message, data message and control message.
15. devices according to claim 13, is characterized in that, described transmitted power reduces module and comprises:
First reduces submodule, for reducing the power sending administrative message in units of predetermined power;
First signal strength detection submodule, for detecting described terminal receiving the first signal strength signal intensity after the administrative message reducing transmitted power;
First judges submodule, for judging that whether the first detected signal strength signal intensity is lower than the first signal strength signal intensity detected last time;
Second reduces submodule, for when being judged as the first detected signal strength signal intensity lower than the first signal strength signal intensity detected last time, again reduces the power sending described administrative message in units of described predetermined power.
16. devices according to claim 13, is characterized in that, described transmitted power reduces module and comprises:
Roaming threshold value obtains submodule, for obtaining the roaming threshold value that described terminal is arranged;
Its own signal intensity determination submodule, for using not higher than the signal strength signal intensity of described roaming threshold value as its own signal intensity;
Transmitted power determination submodule, for determining the power sending administrative message based on described its own signal intensity.
17. devices according to claim 13, is characterized in that, described transmitted power reduces module and comprises:
Difference obtains submodule, for obtaining the difference between the described secondary signal intensity of the described AP that described terminal calculates and described roaming threshold value;
3rd reduces submodule, for reducing the power sending administrative message based on described difference.
18. devices according to claim 13, is characterized in that, described device also comprises:
First transmitted power recovers module, for when detecting with described terminal disassociation, recovers the power sending described administrative message.
19. devices according to claim 13, is characterized in that, described device also comprises:
Second transmitted power recovers module, for when described first signal strength signal intensity being detected higher than described signal strength threshold, recovers the power sending described administrative message.
20. devices according to any one of claim 13-19, it is characterized in that, described administrative message comprises beacon message and/or uni-cast probe message.
21. 1 kinds of wireless access control apparatus, is characterized in that, comprising:
Second detection module, for detecting the secondary signal intensity of associated AP;
Second judge module, for judging that whether described secondary signal intensity is lower than the roaming threshold value preset;
Module is removed in association, and for when being judged as described secondary signal intensity lower than described roaming threshold value, releasing associates with described AP's, and the transmitted power that described secondary signal intensity reduces administrative message lower than described roaming threshold value due to described AP causes.
22. devices according to claim 21, is characterized in that, described second detection module comprises:
Second message receives submodule, for receiving the message from associated AP;
Secondary signal intensity determination submodule, for determining the secondary signal intensity of described AP based on described message, described message comprises beacon message or probe messages.
23. devices according to claim 21, is characterized in that, described device also comprises:
3rd detection module, for detecting the 3rd signal strength signal intensity of the AP of dereferenced;
3rd judge module, for judging that whether described 3rd signal strength signal intensity is higher than described secondary signal intensity;
Then described association removes module when described 3rd judge module is judged as described 3rd signal strength signal intensity higher than described secondary signal intensity, performs associating of described releasing and associated AP.
24. devices according to claim 23, is characterized in that, described device also comprises:
Relating module, associates for the AP corresponding with described 3rd signal strength signal intensity.
25. 1 kinds of routers, is characterized in that, comprising: processor; For the memory of storage of processor executable instruction; Wherein, described processor is configured to:
First signal strength signal intensity of the terminal associated by detection;
Judge that whether described first signal strength signal intensity is lower than the signal strength threshold preset;
When being judged as described first signal strength signal intensity lower than described signal strength threshold, reduce the power sending administrative message, to make described terminal when the secondary signal intensity of associated AP being detected lower than roaming threshold value, releasing associates with described AP's.
26. 1 kinds of terminals, is characterized in that, comprising: processor; For the memory of storage of processor executable instruction; Wherein, described processor is configured to:
The secondary signal intensity of the AP associated by detection;
Judge that whether described secondary signal intensity is lower than the roaming threshold value preset;
When being judged as described secondary signal intensity lower than described roaming threshold value, releasing associates with described AP's, and the transmitted power that described secondary signal intensity reduces administrative message lower than described roaming threshold value due to described AP causes.
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