CN103476143B - A kind of WLAN discharges method, the Apparatus and system of IP resource - Google Patents

A kind of WLAN discharges method, the Apparatus and system of IP resource Download PDF

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Publication number
CN103476143B
CN103476143B CN201210187183.3A CN201210187183A CN103476143B CN 103476143 B CN103476143 B CN 103476143B CN 201210187183 A CN201210187183 A CN 201210187183A CN 103476143 B CN103476143 B CN 103476143B
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list
terminal address
terminal
address
current connection
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CN103476143A (en
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张艳
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China Mobile Communications Group Co Ltd
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China Mobile Communications Group Co Ltd
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Abstract

The invention discloses method, Apparatus and system that a kind of WLAN discharges IP resource. Wherein the method comprises: wireless controller receives the list of current connection terminal address from WAP; Wireless controller is compared the list of current connection terminal address and pre-stored certification by terminal address list, obtain not in the list of current connection terminal address and in certification by the terminal address in terminal address list; Wireless controller is by terminal address from authenticating by deleting terminal address list, and notice DynamicHost arranges protocol server and discharges IP resource corresponding to terminal address. Avoid holding over after terminal abnormal suspension the problem of IP resource, avoided the waste of IP resource, stopped the charging for user simultaneously, reduced user's loss.

Description

A kind of WLAN discharges method, the Apparatus and system of IP resource
Technical field
The present invention relates to wireless technical field, relate in particular to a kind of method that WLAN discharges IP resource,Apparatus and system.
Background technology
WLAN (the WirelessLocalArea of now a lot of operators, hotel, snack bar etc.Network, WLAN) all adopt Portal authentication mode, when unverified user surfs the Net, WLANThe equipment of middle support Portal certification can force users sign in to particular station, and user uses in this website inputAfter name in an account book and cipher authentication success, just can use Internet resources.
Support that, in the existing WLAN of Portal, many WAPs (AccessPoint, AP) are logicalCross access controller (AccessController, AC) centralized Control, by AP by user's data messagePass through AC, then focused on by AC.
User's the flow process of reaching the standard grade is described below:
1. AP on user-association, gets IP address by the DHCP agreement of standard from AC;
2. user's open any browser, access some websites, initiates HTTP request;
3.AC intercepts and captures user's HTTP request, judges that the MAC that User IP is corresponding is illogical in certificationIn the credible MAC list of crossing, user did not authenticate, and just user's authentication request was forced toPortal server;
4.Portal server pushes WEB certification page to WLAN user terminal;
5. user inserts the information such as user name, password of wlan network on certification page, is submitted toPortal server;
6.Portal server receives user profile, sends authenticated user request to Radius;
Whether 7.Radius authentication of users password is correct, and authentication result is returned to Portal server;
8.Portal server is to user's pushing certification results page;
9.Portal server is informed AC authentication result;
10. if, authentication success, AC initiates charging to radius user's certificate server and starts request;
11.RADIUS responds charging and starts request, and starts charging;
So far, user reaches the standard grade complete, and the MAC that User IP is corresponding is added into the credible MAC of ACIn list, AC lets pass to this user's http request, and user can successful access internet.
User's the flow process that normally rolls off the production line is described below:
1. in the time that user need to be rolled off the production line, click the button that rolls off the production line of the authentication result page, to Portal serverInitiate a request of rolling off the production line;
2.Portal server initiates to AC the request of rolling off the production line;
3.AC deletes MAC corresponding User IP (but can not release from the credible MAC list of ACPut IP address), return to the result that rolls off the production line to Portal server;
4.Portal server, according to rolling off the production line result, pushes the page that contains corresponding informance to user;
5. when AC receives when request of rolling off the production line, send out accounting completion packet to RADIUS;
6.RADIUS responds the accounting completion packet of AC, stops charging.
If after user terminal is reached the standard grade, extremely shut down (such as unexpected power-off) or shift out WLAN coverage territory,Do not complete the flow process that rolls off the production line normally, user terminal cannot send Release message informing DynamicHost and establishPut agreement (DynamicHostConfigurationProtocol, DHCP) server and discharge the IP distributingAddress, causes the IP address that this user terminal obtains will be always in occupied state, until DHCPServer is just to discharge this IP resource after the lease expires that arranges of this IP address, thereby causes IP resourceWaste.
In prior art, alleviate because user terminal shuts down extremely by the lease time of adjusting IP addressOr shift out the IP wasting of resources that WLAN coverage territory causes. For the user terminal of normal use,Before the lease expires of IP address, can send renewed treaty message to Dynamic Host Configuration Protocol server, while therefore shortening leaseBetween will require Dynamic Host Configuration Protocol server to process a large amount of renewed treaty messages, thereby increase the burden of Dynamic Host Configuration Protocol server,Not only affect the performance of Dynamic Host Configuration Protocol server, and still also will wait until ability after the lease expires of IP addressDischarge idle IP address, cannot effectively solve the problem of the IP wasting of resources.
Summary of the invention
In order to solve the technical problem of the IP wasting of resources in prior art, the present invention proposes a kind of WLANDischarge method, wireless controller and the WLAN Resource Supply system embodiment of IP resource.
One aspect of the present invention, provides a kind of WLAN to discharge the method for IP resource, comprising:
Wireless controller receives the list of current connection terminal address from WAP;
Wireless controller by the list of described current connection terminal address and pre-stored certification by terminal groundLocation list is compared, and acquisition is passed through eventually in described certification not in the list of described current connection terminal addressTerminal address in end address list;
Wireless controller by described terminal address from described certification by deleting terminal address list, noticeDynamicHost arranges protocol server and discharges the IP resource that described terminal address is corresponding.
Another aspect of the present invention, provides a kind of wireless controller, comprising:
Receiver module, for receiving the list of current connection terminal address from WAP;
Memory module, passes through terminal address list for authentication storage;
Comparing module, for passing through terminal address by the list of described current connection terminal address and described certificationList is compared, and obtains and does not pass through terminal in the list of described current connection terminal address in described certificationTerminal address in address list;
Processing module, for described terminal address is deleted by terminal address list from described certification,Notice DynamicHost arranges protocol server and discharges the IP resource that described terminal address is corresponding.
Another aspect of the present invention, provides a kind of WLAN Resource Supply system, comprising:
WAP, for being sent to wireless controller by the list of current connection terminal address;
Wireless controller, for receiving the list of described current connection terminal address, by described current connection eventuallyEnd address list is compared by terminal address list with pre-stored certification, obtain described oughtThe list of front connection terminal address and in described certification by the terminal address in terminal address list; Described in inciting somebody to actionTerminal address is from described certification by deleting terminal address list, and notice DynamicHost arranges protocol serviceDevice discharges the IP resource that described terminal address is corresponding.
WLAN of the present invention discharges method, wireless controller and the WLAN Resource Supply system of IP resourceSystem, compares by AC the list of current connection terminal address and the pre-stored certification of AC that AP reportsBy terminal address list, find out abnormal shutdown or shift out the abnormal suspension things of generation such as WLAN coverage territoryThe terminal of part, discharges the shared IP resource of these terminals, for terminal rolls off the production line. Like this, avoided terminalAfter abnormal suspension, hold over the problem of IP resource, avoided the waste of IP resource, stop as using simultaneouslyFamily charging, reduces user's loss.
In order to solve the technical problem of the IP wasting of resources in prior art, the present invention proposes a kind of WLANDischarge method, wireless controller and the WLAN Resource Supply system embodiment of IP resource.
One aspect of the present invention, provides a kind of method a kind of 4, that WLAN discharges IP resource, itsBe characterised in that, comprise:
Wireless controller sends connective spy to pre-stored certification by the terminal in terminal address listSurvey solicited message;
When wireless controller within the default time is not received the detection corresponding information that described terminal is returnedTime, wireless controller by described terminal address from described certification by deleting terminal address list, noticeDynamicHost arranges protocol server and discharges the IP resource that described terminal address is corresponding.
Another aspect of the present invention, provides a kind of wireless controller, comprising:
Memory module, passes through terminal address list for authentication storage;
Sending module, for sending connective detection to described certification by the terminal of terminal address listSolicited message;
Whether judge module, receive that for judging the detection that described terminal returns is corresponding within the default timeInformation;
Processing module does not receive for working as the corresponding letter of detection that described terminal is returned within the default timeWhen breath, by described terminal address from described certification by deleting terminal address list, notice DynamicHostProtocol server is set and discharges the IP resource that described terminal address is corresponding.
Another aspect of the present invention, provides a kind of WLAN Resource Supply system, comprising:
Wireless controller, sends connective to pre-stored certification by the terminal in terminal address listProbe requests thereby information; When wireless controller within the default time is not received the detection that described terminal is returnedWhen corresponding information, wireless controller by described terminal address from described certification by deleting terminal address listRemove, notice DynamicHost arranges protocol server and discharges the IP resource that described terminal address is corresponding.
WLAN of the present invention discharges method, wireless controller and the WLAN Resource Supply system of IP resourceSystem, initiatively sends connective to pre-stored certification by AC by the terminal in terminal address listProbe requests thereby information, if do not receive terminal response within the default time, judges this terminal abnormal suspension,Discharge the shared IP resource of these terminals, for terminal rolls off the production line. Avoid because AP provides information incompleteThe abnormal suspension terminal of the judgement mistake causing, thus will may normal online terminal roll off the production line and discharge IP moneySource, has ensured that user terminal normally uses network, improves and judges terminal abnormal suspension event accuracy. WithTime, avoid holding over after terminal abnormal suspension the problem of IP resource, avoid the waste of IP resource,Stop the charging for user simultaneously, reduce user's loss.
In order to solve the technical problem of the IP wasting of resources in prior art, the present invention proposes a kind of WLANDischarge method, wireless controller and the WLAN Resource Supply system embodiment of IP resource.
One aspect of the present invention, provides a kind of WLAN to discharge the method for IP resource, comprising:
Wireless controller receives the list of current connection terminal address from WAP;
Wireless controller by the list of described current connection terminal address and pre-stored certification by terminal groundLocation list is compared, and acquisition is passed through eventually in described certification not in the list of described current connection terminal addressTerminal address in end address list;
Wireless controller sends connective probe requests thereby information to terminal corresponding to described terminal address;
When wireless controller within the default time is not received the detection corresponding information that described terminal is returnedTime, wireless controller by described terminal address from described certification by deleting terminal address list, noticeDynamicHost arranges protocol server and discharges the IP resource that described terminal address is corresponding.
Another aspect of the present invention, provides a kind of wireless controller, comprising:
Receiver module, for receiving the list of current connection terminal address from WAP;
Memory module, passes through terminal address list for authentication storage;
Comparing module, for passing through terminal address by the list of described current connection terminal address and described certificationList is compared, and obtains and does not pass through terminal in the list of described current connection terminal address in described certificationTerminal address in address list;
Sending module, for sending connective probe requests thereby information to terminal corresponding to described terminal address;
Whether judge module, receive that for judging the detection that described terminal returns is corresponding within the default timeInformation;
Processing module does not receive for working as the corresponding letter of detection that described terminal is returned within the default timeWhen breath, by described terminal address from described certification by deleting terminal address list, notice DynamicHostProtocol server is set and discharges the IP resource that described terminal address is corresponding.
Another aspect of the present invention, provides a kind of LAN Resource Supply system, comprising:
WAP, for being sent to wireless controller by the list of current connection terminal address;
Wireless controller, for receiving the list of described current connection terminal address, by described current connection eventuallyEnd address list is compared by terminal address list with pre-stored certification, obtain described oughtThe list of front connection terminal address and in described certification by the terminal address in terminal address list; To describedThe terminal that terminal address is corresponding sends connective probe requests thereby information; When not receiving within the default timeWhen detection corresponding information that described terminal is returned, described terminal address is passed through to terminal address from described certificationIn list, delete, notice DynamicHost arranges protocol server and discharges the IP money that described terminal address is correspondingSource.
WLAN of the present invention discharges method, wireless controller and the WLAN Resource Supply system of IP resourceSystem, the list of current connection terminal address and the pre-stored certification of AC that first AC comparison AP reportsBy terminal address list, find out abnormal shutdown or shift out the abnormal suspension things of generation such as WLAN coverage territoryThe terminal of part, then, the terminal that AC initiatively to these, abnormal suspension event occurs sends connective detectionSolicited message, if do not receive terminal response within the default time, judges this terminal abnormal suspension, releasesPut the shared IP resource of these terminals, for terminal rolls off the production line. AC passes through the comparison of address list and masterMove terminal connectedness is surveyed and combined, not only improved judgement terminal abnormal suspension event accurateSpend, and reduced the work load of AC. Meanwhile, avoided holding over IP after terminal abnormal suspensionThe problem of resource, has avoided the waste of IP resource, stops the charging for user simultaneously, reduces user's loss.
Brief description of the drawings
Fig. 1 is the schematic flow sheet that WLAN of the present invention discharges method first embodiment of IP resource;
Fig. 2 is the idiographic flow schematic diagram that WLAN of the present invention discharges method first embodiment of IP resource;
Fig. 3 is the structural representation of AC the first embodiment of the present invention;
Fig. 4 is the schematic flow sheet that WLAN of the present invention discharges method second embodiment of IP resource;
Fig. 5 is the idiographic flow schematic diagram that WLAN of the present invention discharges method second embodiment of IP resource;
Fig. 6 is the structural representation of AC the second embodiment of the present invention;
Fig. 7 is the schematic flow sheet that WLAN of the present invention discharges method the 3rd embodiment of IP resource;
Fig. 8 is the idiographic flow schematic diagram that WLAN of the present invention discharges method the 3rd embodiment of IP resource;
Fig. 9 is the structural representation of AC of the present invention the 3rd embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, method first embodiment of WLAN release IP resource of the present invention comprises:
Step 102, AC receives the list of current connection terminal address from AP;
Step 104, terminal address is passed through in the list of current connection terminal address and pre-stored certification by ACList is compared, and acquisition is passed through terminal address list not in the list of current connection terminal address in certificationIn terminal address;
Step 106, AC from authenticating by deleting terminal address list, notifies DHCP by terminal addressServer discharges IP resource corresponding to terminal address.
As shown in Figure 2, the idiographic flow of method first embodiment of this WLAN release IP resource is as follows:
Step 202, AP regularly (such as 5 minutes, can carry out according to concrete application scenarios by this timeSet) report the list of current connection terminal address to AC;
Step 204, AC gathers the current connection terminal address list that each AP of jurisdiction reports, and forms oneThe list of individual ephemeral terminations MAC Address;
Step 206, terminal ground is passed through in the list of ephemeral terminations MAC Address and the certification of oneself safeguarding by ACLocation list contrast, will be in certification by terminal address list but not in the list of ephemeral terminations MAC AddressTerminal from certification by deleting terminal address list, be this user offline;
Step 208, AC sends charging ending request to Radius certificate server;
Step 210, Radius certificate server returns to the response of charging ending request, stops charging;
Step 212, AC notice Dynamic Host Configuration Protocol server discharges the IP money that this terminal MAC Address is correspondingSource, wherein, Dynamic Host Configuration Protocol server can be integrated in AC inside, also can be used as an independent network element.
Based on the inventive concept identical with said method the first embodiment, the present invention also provides a kind of wireless controlledDevice AC processed and WLAN Resource Supply system embodiment.
As shown in Figure 3, AC the first embodiment comprises: receiver module 31, memory module 32, comparison mouldPiece 33 and processing module 34.
Particularly, receiver module receives the list of current connection terminal address from WAP; Memory moduleAuthentication storage is by terminal address list; Comparing module is passed through the list of current connection terminal address and certificationTerminal address list is compared, and obtains and does not pass through terminal in the list of current connection terminal address in certificationTerminal address in address list; Processing module by terminal address from certification by deleting terminal address listRemove, notice Dynamic Host Configuration Protocol server discharges IP resource corresponding to terminal address.
WLAN Resource Supply system the first embodiment comprises: AP, and for by current connection terminal addressList is sent to AC; AC, for receiving the list of current connection terminal address, by current connection terminal groundLocation list and pre-stored certification are compared by terminal address list, obtain at current connections endHold address list and pass through the terminal address in terminal address list in certification; Terminal address is logical from authenticatingCross in terminal address list and delete, notice Dynamic Host Configuration Protocol server discharges IP resource corresponding to terminal address.
WLAN of the present invention discharges method the first embodiment, the wireless controller first of IP resource to be implementedExample and WLAN Resource Supply system the first embodiment, compare current connection that AP reports eventually by ACTerminal address list is passed through in the pre-stored certification of end address list and AC, finds out abnormal shutdown or shifts outThere is the terminal of abnormal suspension event in WLAN coverage territories etc., discharges the shared IP money of these terminalsSource, for terminal rolls off the production line. Like this, avoid holding over after terminal abnormal suspension the problem of IP resource, kept awayThe waste of having exempted from IP resource stops the charging for user simultaneously, reduces user's loss.
As shown in Figure 4, method second embodiment of WLAN release IP resource of the present invention comprises:
Step 402, AC sends connective to pre-stored certification by the terminal in terminal address listProbe requests thereby information;
Step 404, AC judges the detection corresponding information of whether receiving that within the default time terminal is returned,If no, execution step 406;
Step 406, when wireless controller within the default time does not receive that the detection that terminal returns is correspondingWhen information, AC is by terminal address from authenticating by deleting terminal address list, and notice DHCP servesDevice discharges IP resource corresponding to terminal address.
As shown in Figure 5, the idiographic flow of method second embodiment of this WLAN release IP resource is as follows:
Step 502, AC regularly (such as 15 minutes, can enter according to concrete application scenarios by this timeRow is set) push preset times (such as 3 times, if detect to the terminal by terminal address listUser terminal is suspension, needs the connective probe requests thereby that pushes again corresponding number of times to confirm) connectionProperty probe requests thereby information;
Step 504, AC judges the detection corresponding information of whether receiving that within the default time terminal is returned,If in Preset Time (such as 2 minutes, this time can be set according to concrete application scenarios)Terminal does not respond, and illustrates that terminal extremely shuts down most probably or shift out WLAN coverage territory, carries out stepRapid 506;
Step 506, AC from by deleting terminal address list, is this user offline by this terminal.
Step 508, AC sends charging ending request to Radius certificate server;
Step 510, Radius certificate server returns to the response of charging ending request, stops charging;
Step 512, AC notice DHCP discharges the IP resource that this terminal MAC Address is corresponding.
Based on the inventive concept identical with said method the second embodiment, the present invention also provides a kind of wireless controlledDevice AC processed and WLAN Resource Supply system embodiment.
As shown in Figure 6, AC the second embodiment comprises: memory module 61, sending module 62, judge mouldPiece 63 and processing module 64.
Particularly, memory module authentication storage is by terminal address list; Sending module passes through eventually to certificationTerminal in end address list sends connective probe requests thereby information; Judge module judged in the default timeInside whether receive the detection corresponding information that terminal is returned; Processing module is when not receiving within the default timeWhen detection corresponding information that terminal is returned, by terminal address from certification by deleting terminal address list,Notice Dynamic Host Configuration Protocol server discharges IP resource corresponding to terminal address.
WLAN Resource Supply system the second embodiment comprises: wireless controller, and to pre-stored certificationSend connective probe requests thereby information by the terminal in terminal address list; When nothing within the default timeWhen lane controller is not received the detection corresponding information that terminal returns, wireless controller by terminal address from recognizingCard is by deleting in terminal address list, and notice Dynamic Host Configuration Protocol server discharges the IP money that terminal address is correspondingSource.
WLAN of the present invention discharges method the second embodiment, the wireless controller second of IP resource to be implementedExample and WLAN Resource Supply system the second embodiment, initiatively pass through to pre-stored certification by ACTerminal in terminal address list sends connective probe requests thereby information, if do not receive within the default timeTerminal response, judges this terminal abnormal suspension, discharges the shared IP resource of these terminals, is terminalRoll off the production line. The abnormal suspension terminal of the judgement mistake that provides information entirely not cause due to AP has been provided, thus willMay normal online terminal roll off the production line and discharge IP resource, ensure that user terminal normally uses network, carriesHeight judges terminal abnormal suspension event accuracy. Meanwhile, avoided holding over IP after terminal abnormal suspensionThe problem of resource, has avoided the waste of IP resource, stops the charging for user simultaneously, reduces user's loss.
As shown in Figure 7, method the 3rd embodiment of WLAN release IP resource of the present invention comprises:
Step 702, AC receives the list of current connection terminal address from AP;
Step 704, terminal address is passed through in the list of current connection terminal address and pre-stored certification by ACList is compared, and acquisition is passed through terminal address list not in the list of current connection terminal address in certificationIn terminal address;
Step 706, AC sends connective probe requests thereby information to terminal corresponding to terminal address;
Step 708, AC judges the detection corresponding information of whether receiving that within the default time terminal is returned,If no, execution step 710;
Step 710, AC from authenticating by deleting terminal address list, notifies DHCP by terminal addressServer discharges IP resource corresponding to terminal address.
Shown in Fig. 8, the idiographic flow of method the 3rd embodiment of this WLAN release IP resource is as follows:
Step 802, AP regularly (such as 5 minutes, can carry out according to concrete application scenarios by this timeSet) report the list of current connection terminal address to AC;
Step 804, AC gathers the current connection terminal address list that each AP of jurisdiction reports, and forms oneThe list of individual ephemeral terminations MAC Address; AC is by the list of ephemeral terminations MAC Address and pre-stored recognizingCard is compared by terminal address list, and acquisition is not in the list of ephemeral terminations MAC Address and in certificationBy the terminal address in terminal address list;
Step 806, the terminal address obtaining in AC step 804 sends connective probe requests thereby information;
Step 808, AC judges the detection corresponding information of whether receiving that within the default time terminal is returned,If in Preset Time (such as 2 minutes, this time can be set according to concrete application scenarios)Terminal does not respond, and illustrates that terminal extremely shuts down most probably or shift out WLAN coverage territory, carries out stepRapid 810;
Step 810, AC from by deleting terminal address list, is this user offline by this terminal.
Step 812, AC sends charging ending request to Radius certificate server;
Step 814, Radius certificate server returns to the response of charging ending request, stops charging;
Step 816, AC notice DHCP discharges the IP resource that this terminal MAC Address is corresponding.
Based on the inventive concept identical with said method the 3rd embodiment, the present invention also provides a kind of wireless controlledDevice AC processed and WLAN Resource Supply system embodiment.
As shown in Figure 9, AC the 3rd embodiment comprises: receiver module 91, memory module 92, comparison mouldPiece 93, sending module 94, judge module 95 and processing module 96.
Particularly, receiver module receives the list of current connection terminal address from WAP; Memory moduleAuthentication storage is by terminal address list; Comparing module is passed through the list of current connection terminal address and certificationTerminal address list is compared, and obtains and does not pass through terminal in the list of current connection terminal address in certificationTerminal address in address list; Sending module sends connective detection to terminal corresponding to terminal address pleaseAsk information; Judge module judges the detection corresponding information of whether receiving that within the default time terminal is returned;Processing module in the time not receiving the detection corresponding information that terminal is returned, by terminal ground within the default timeLocation is from certification by deleting terminal address list, and it is corresponding that notice Dynamic Host Configuration Protocol server discharges terminal addressIP resource.
WLAN Resource Supply system the 3rd embodiment of the present invention comprises: AP, and for current connection is wholeEnd address list is sent to wireless controller; AC, for receiving the list of current connection terminal address, oughtThe list of front connection terminal address and pre-stored certification are compared by terminal address list, obtain notPass through the terminal address in terminal address list in the list of current connection terminal address in certification; To terminalTerminal corresponding to address sends connective probe requests thereby information; When do not receive terminal within the default timeReturn detection corresponding information time, by terminal address from certification by deleting terminal address list, noticeDynamic Host Configuration Protocol server discharges IP resource corresponding to terminal address.
WLAN of the present invention discharges method the 3rd embodiment, the wireless controller the 3rd of IP resource to be implementedExample and WLAN Resource Supply system the 3rd embodiment, the current connection that first AC comparison AP reports eventuallyTerminal address list is passed through in the pre-stored certification of end address list and AC, finds out abnormal shutdown or shifts outThere is the terminal of abnormal suspension event in WLAN coverage territories etc., then, AC is initiatively different to these generationsThe terminal of normal off online story part sends connective probe requests thereby information, if do not receive terminal within the default timeResponse, judges this terminal abnormal suspension, discharges the shared IP resource of these terminals, for terminal rolls off the production line.AC, by the comparison of address list and active are surveyed and combined terminal connectedness, not only carriesHigh judgement terminal abnormal suspension event accuracy, and reduced the work load of AC. Meanwhile, keep awayExempt to hold over after terminal abnormal suspension the problem of IP resource, avoided the waste of IP resource, simultaneouslyStop the charging for user, reduce user's loss.
It should be noted that: above embodiment is only unrestricted in order to the present invention to be described, the present invention also and not onlyBe limited to above-mentioned giving an example, all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, and it is equalShould be encompassed in claim scope of the present invention.

Claims (7)

1. WLAN discharges a method for IP resource, it is characterized in that, comprising:
Wireless controller receives the list of current connection terminal address from WAP;
Wireless controller by the list of described current connection terminal address and pre-stored certification by terminal groundLocation list is compared, and acquisition is passed through eventually in described certification not in the list of described current connection terminal addressTerminal address in end address list;
Wireless controller by described terminal address from described certification by deleting terminal address list, noticeDynamicHost arranges protocol server and discharges the IP resource that described terminal address is corresponding.
2. a wireless controller, is characterized in that, comprising:
Receiver module, for receiving the list of current connection terminal address from WAP;
Memory module, passes through terminal address list for authentication storage;
Comparing module, for passing through terminal address by the list of described current connection terminal address and described certificationList is compared, and obtains and does not pass through terminal in the list of described current connection terminal address in described certificationTerminal address in address list;
Processing module, for described terminal address is deleted by terminal address list from described certification,Notice DynamicHost arranges protocol server and discharges the IP resource that described terminal address is corresponding.
3. a WLAN Resource Supply system, is characterized in that, comprising:
WAP, for being sent to wireless controller by the list of current connection terminal address;
Wireless controller, for receiving the list of described current connection terminal address, by described current connection eventuallyEnd address list is compared by terminal address list with pre-stored certification, obtain described oughtThe list of front connection terminal address and in described certification by the terminal address in terminal address list; Described in inciting somebody to actionTerminal address is from described certification by deleting terminal address list, and notice DynamicHost arranges protocol serviceDevice discharges the IP resource that described terminal address is corresponding.
4. WLAN discharges a method for IP resource, it is characterized in that, comprising:
Wireless controller receives the list of current connection terminal address from WAP;
Wireless controller by the list of described current connection terminal address and pre-stored certification by terminal groundLocation list is compared, and acquisition is passed through eventually in described certification not in the list of described current connection terminal addressTerminal address in end address list;
Wireless controller sends connective probe requests thereby information to terminal corresponding to described terminal address;
When wireless controller within the default time is not received the detection corresponding information that described terminal is returnedTime, wireless controller by described terminal address from described certification by deleting terminal address list, noticeDynamicHost arranges protocol server and discharges the IP resource that described terminal address is corresponding.
5. WLAN according to claim 4 discharges the method for IP resource, it is characterized in that nothingLane controller sends connective probe requests thereby to pre-stored certification by the terminal in terminal address listInformation comprises:
Wireless controller regularly sends default to pre-stored certification by the terminal in terminal address listThe connective probe requests thereby information of number of times.
6. a wireless controller, is characterized in that, comprising:
Receiver module, for receiving the list of current connection terminal address from WAP;
Memory module, passes through terminal address list for authentication storage;
Comparing module, for passing through terminal address by the list of described current connection terminal address and described certificationList is compared, and obtains and does not pass through terminal in the list of described current connection terminal address in described certificationTerminal address in address list;
Sending module, for sending connective probe requests thereby information to terminal corresponding to described terminal address;
Whether judge module, receive that for judging the detection that described terminal returns is corresponding within the default timeInformation;
Processing module does not receive for working as the corresponding letter of detection that described terminal is returned within the default timeWhen breath, by described terminal address from described certification by deleting terminal address list, notice DynamicHostProtocol server is set and discharges the IP resource that described terminal address is corresponding.
7. a WLAN Resource Supply system, is characterized in that, comprising:
WAP, for being sent to wireless controller by the list of current connection terminal address;
Wireless controller, for receiving the list of described current connection terminal address, by described current connection eventuallyEnd address list is compared by terminal address list with pre-stored certification, obtain described oughtThe list of front connection terminal address and in described certification by the terminal address in terminal address list; To describedThe terminal that terminal address is corresponding sends connective probe requests thereby information; When not receiving within the default timeWhen detection corresponding information that described terminal is returned, described terminal address is passed through to terminal address from described certificationIn list, delete, notice DynamicHost arranges protocol server and discharges the IP money that described terminal address is correspondingSource.
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