CN102833854A - Positioning method, device and wireless local area network - Google Patents
Positioning method, device and wireless local area network Download PDFInfo
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- CN102833854A CN102833854A CN2012103255677A CN201210325567A CN102833854A CN 102833854 A CN102833854 A CN 102833854A CN 2012103255677 A CN2012103255677 A CN 2012103255677A CN 201210325567 A CN201210325567 A CN 201210325567A CN 102833854 A CN102833854 A CN 102833854A
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Abstract
The invention provides a positioning method and device and a wireless local area network. The positioning method comprises the following steps: A, acquiring receiving signal strength of at least one station (STA) linked to an antenna access point (AP) when the emitting function of an antenna corresponding to a target is implemented, and utilizing the receiving signal strength as a first signal strength value of each STA; B, acquiring the receiving signal strength of at least one STA linked to the AP when the emitting function of the antenna is stopped, and utilizing the receiving signal strength as a second signal strength value of each STA; C, acquiring at least one STA with the difference between the first signal strength value and the second signal strength value more than the preset signal strength threshold and the first signal strength value more than the preset signal strength reference value from the at least one STA, so as to form a target STA set; and D, determining the STA in a target area based on the target STA set. With the adoption of the positioning method and device and the wireless local area network, the positioning efficiency can be improved.
Description
Technical field
The present invention relates to the communication technology, relate in particular to a kind of localization method, device and WLAN (Wireless Local Area Network is called for short WLAN).
Background technology
That the large tracts of land of WLAN is disposed general employing is foundation frame configuration basic service set (Basic Service Set; Be called for short BSS); In foundation frame configuration BSS, wireless network is by an access point (Access Point is called for short AP) and a plurality of station (Station; Be called for short STA) to form, all data message forwarding of STA all will be passed through AP.
Can comprise intelligence somatotype AP among the WLAN.Intelligence somatotype AP is meant that a wireless aps is extremely indoor through the signal that feeder line prolongs antenna, and an AP connects many antennas, and every antenna covers a zone.It is many that intelligence somatotype AP generally is deployed in barrier, and in the signal attenuation serious environmental, the every antenna of AP covers a zone.For example, in places such as school, hospital, office buildings, the every antenna of intelligence somatotype AP covers a room.STA is associated with intelligence somatotype AP through the antenna of region; Because the every antenna transmitting power of intelligence somatotype AP is lower; And overlay area ambient signals decay is serious, so STA is when being associated with AP through another regional antenna, and the signal strength signal intensity of reception can reduce a lot.
In the zone that intelligence somatotype AP disposes, exist the STA in a certain zone is positioned, and then carry out the needs of control of authority.For example forbid at school that the STA in a certain classroom inserts in the process, or forbid that in conference process STA in the meeting room inserts.At present, in wlan system, measure the reaction time of same STA through a plurality of AP and carry out the STA location with the reception signal strength signal intensity.
Use prior art that STA is located, need to use a plurality of AP to measure and according to the measurement result combined calculation of a plurality of AP, draw the positional information of STA, therefore need carry out a large amount of calculation process, locating speed is slow, efficient is low.
Summary of the invention
The present invention provides a kind of localization method, device and WLAN, to improve location efficiency.
The present invention provides a kind of localization method, comprising:
Steps A. the access point AP that said antenna connected when the emission function that obtains the target area corresponding antenna was opened goes up the reception signal strength signal intensity of at least one related station STA, as first signal strength values of each said STA;
Said AP went up the reception signal strength signal intensity of related said at least one STA when the emission function that step B. obtains said antenna was closed, as the secondary signal intensity level of each said STA;
Step C. is from said at least one STA; The difference of obtaining said first signal strength values and said secondary signal intensity level greater than at least one STA of preset signal strength reference value, is formed target STA set greater than preset signal strength threshold and said first signal strength values;
The present invention also provides a kind of positioner, comprising:
First acquiring unit, the access point AP that said antenna connected when the emission function that is used to obtain the target area corresponding antenna was opened goes up the reception signal strength signal intensity of at least one related station STA, as first signal strength values of each said STA;
Second acquisition unit, said AP went up the reception signal strength signal intensity of related said at least one STA when the emission function that is used to obtain said antenna was closed, as the secondary signal intensity level of each said STA;
Comparing unit; Be used for from said at least one STA; The difference of obtaining said first signal strength values and said secondary signal intensity level greater than at least one STA of preset signal strength reference value, is formed target STA set greater than preset signal strength threshold and said first signal strength values;
Decision unit is used for confirming the STA in the said target area according to said target STA set.
The present invention also provides a kind of WLAN WLAN, comprising: access point AP, the antenna, the station STA that is connected with said antenna wireless that are connected with said access point A P and be connected with said AP like any described positioner in the claim 6 to 10.
The present invention; Through signalization intensity threshold and signal strength reference value in advance in AP; And, calculate the reception signal strength values of the related STA of AP by the emission function of the antenna in AP control On/Off coverage goal zone, come the STA in the target area is positioned; Realize using an AP to the function that STA positions, improved the efficient of location.
Description of drawings
Fig. 1 is the flow chart of localization method embodiment one of the present invention;
Fig. 2 is the flow chart of localization method embodiment two of the present invention;
Fig. 3 is the flow chart of localization method embodiment three of the present invention;
Fig. 4 is the structural representation of positioner embodiment one to embodiment three of the present invention;
Fig. 5 is the structural representation of WLAN embodiment one of the present invention;
Fig. 6 is the structural representation of WLAN embodiment two of the present invention.
Embodiment
Fig. 1 is the flow chart of localization method embodiment one of the present invention, and as shown in Figure 1, the method for present embodiment can comprise:
Step S101, the access point AP that this antenna connects during the emission function unlatching of obtaining the target area corresponding antenna goes up the reception signal strength signal intensity of at least one related station STA, as first signal strength values of each STA.
Particularly; The described AP of present embodiment is intelligence somatotype AP, and each AP connects several antennas, and every antenna links to each other with AP through feeder line; The wireless signal of every antenna covers a target area, and AP institute region covered is the set of the overlay area of all antennas of this AP connection.When the STA in the target area that need cover a certain antenna positions; The reception signal strength signal intensity of all STAs related when AP at first obtains this zone antenna emission function and opens with this AP, and first signal strength values of the signal strength signal intensity that receives as each STA be recorded among the AP.
Step S102, AP went up the reception signal strength signal intensity of at least one related STA when the emission function that obtains above-mentioned antenna was closed, as the secondary signal intensity level of each STA.
Particularly; The emission function of the antenna of the target area that covering need position is closed in AP control; And obtain this moment AP once more and go up the reception signal strength signal intensity of all related STA, the secondary signal intensity level of the signal strength signal intensity that receives as each STA is recorded among the AP.
Step S103, from least one STA, the difference of obtaining first signal strength values and secondary signal intensity level greater than at least one STA of preset signal strength reference value, is formed target STA set greater than preset signal strength threshold and first signal strength values.
Particularly; In AP, be preset with a signal strength threshold and a signal strength reference value in advance; Whether the difference of judging first signal strength values be recorded in each STA among the AP and secondary signal intensity level is greater than this signal strength threshold; And whether first signal strength values of judging each STA with the STA that simultaneously satisfy above-mentioned two Rule of judgment chooses out greater than this signal strength reference value the STA set of composition target area.Preferably, can the MAC Address of the STA that choose be carried out record, form the set of the MAC Address of target area, be convenient to confirming STA in the subsequent step.
In the overlay area of the antenna that above-mentioned signal strength threshold is used to judge whether STA is being closed/is opening, above-mentioned signal strength reference value is used to judge that STA is whether in AP plan region covered.Particularly; Signal strength threshold can be set to the Signal Spacing intensity between two adjacent different antennae overlay areas that AP connects; When two antennas are all opened; The reception signal strength values A of STA is the intensity level of the signal that sent of the antenna A that receives in the antenna A overlay area, when antenna A closes, and the intensity level B of the signal that the reception signal strength values B of STA possibly sent for the antenna B that receives in the antenna A overlay area; When receiving signal strength values A and the difference that receives signal strength values B, can judge that then this STA is positioned at antenna A institute region covered greater than the signal strength threshold that is provided with.Signal strength reference value can be set to the minimum access signal strength values of antenna coverage areas that AP connects; If the reception signal strength values A of STA is less than the signal reference intensity level in the antenna A overlay area; Think that then this STA is positioned at outside the overlay area of this AP; At this moment, though the reception signal strength values A that judges STA and the difference that receives signal strength values B greater than signal strength threshold, this STA is not also in the overlay area of antenna A.
Step S104 according to target STA set, confirms the STA in the target area.
Particularly, the STA of the target area of forming among step S103 set is the STA set in this target area, so promptly the STA in the target area has been accomplished the location.
Present embodiment; Through signalization intensity threshold and signal strength reference value in advance in AP; And, calculate the reception signal strength values of the related STA of AP by the emission function of the antenna in AP control On/Off coverage goal zone, come the STA in the target area is positioned; Realize using an AP to the function that STA positions, improved the efficient of location.
Localization method embodiment one operable environment of the present invention is: isolate several independently intervals if AP is installed in the bigger sliders of usefulness decay such as school, hospital, office building; AP can be installed in one independently in the interval with an antenna; The signal that each antenna is responsible in the separate portions covers, and an AP covers a plurality of independently interval.In the time need carrying out the authority change, need earlier it to be positioned to the STA in some or a plurality of separate portions.For example, in school's class period, need forbid the STA access network in the classroom, but still need allow access network the STA in the office; At this moment, the localization method that provides through said method embodiment one is through the antenna emission function in each classroom of On/Off; Confirm the STA set in the classroom, and be provided with and forbid its access network, and the STA in the office is not operated; Still normal access network when after class, can be provided with the STA access network that allows in the classroom once more.
Fig. 2 is the flow chart of localization method embodiment two of the present invention, and as shown in Figure 2, the method for present embodiment can comprise:
Step S201 when the emission function of target area antenna is opened, resolves the mutual message of at least one STA and AP, obtains first signal strength values of each STA, as first signal strength values of each STA.
Particularly, when the STA in the target area that need cover a certain antenna positions, at first; The emission function of the antenna of target area is opened; AP can send a request message to the STA of association, and request STA sends current reception signal strength signal intensity, after STA receives this request message; Send the current reception signal strength values that receives this AP to AP, this reception signal strength values that AP sends with the STA that receives is as first signal strength values of this AP.Perhaps, when the emission function of the antenna of target area is opened, AP can send through the related STA that parsing receives like messages such as handshaking information, obtain the current reception signal strength values that receives this AP of STA, as first signal strength values of this AP.Promptly; The access point AP that antenna connected when the emission function that obtains the target area corresponding antenna was opened goes up the reception signal strength signal intensity of at least one related station STA; Concrete grammar as first signal strength values of each STA is: when the emission function of antenna is opened in the target area; Resolve the mutual message of at least one STA and AP, obtain first signal strength values of each STA, as first signal strength values of each STA.
Step S202 when the emission function of target area antenna is closed, resolves the mutual message of at least one STA and AP, obtains the secondary signal intensity level of each STA, as the secondary signal intensity level of each STA.
Particularly; When the emission function of the antenna of target area is closed; AP can send a request message to the STA of association, and request STA sends current reception signal strength signal intensity, after STA receives this request message; Send the current signal strength values that receives this AP to AP, this reception signal strength values that AP sends with the STA that receives is as the secondary signal intensity level of this AP.Perhaps, when the emission function of the antenna of target area is closed, AP can send through the related STA that parsing receives like messages such as handshaking information, obtain the current reception signal strength values that receives this AP of STA, as the secondary signal intensity level of this AP.Promptly; AP went up the reception signal strength signal intensity of at least one related STA when the emission function that obtains antenna was closed; Concrete grammar as the secondary signal intensity level of each STA is: when the emission function of target area antenna is closed; Resolve the mutual message of at least one STA and AP, obtain the secondary signal intensity level of each STA, as the secondary signal intensity level of each STA.
Step S103, from least one STA, the difference of obtaining first signal strength values and secondary signal intensity level greater than at least one STA of preset signal strength reference value, is formed target STA set greater than preset signal strength threshold and first signal strength values.
Step S104 according to target STA set, confirms the STA in the target area.
Present embodiment; Through signalization intensity threshold and signal strength reference value in advance in AP; And, calculate the reception signal strength values of the related STA of AP by the emission function of the antenna in AP control On/Off coverage goal zone, come the STA in the target area is positioned; Realize using an AP to the function that STA positions, improved the efficient of location.
Step S202 among the above-mentioned localization method embodiment two can also comprise: in the time can't obtaining the mutual message of STA and AP, the secondary signal intensity level of confirming STA is 0.
Particularly, if AP does not obtain the response message of STA after the STA of association sends a request message, or the emission function of antenna is when the STA related with AP loses the incidence relation with this AP at this moment when opening, and then the secondary signal intensity level of these STA is set to 0.
Among above-mentioned localization method embodiment one and the embodiment two, step S104 comprises: confirm that the STA in the target STA set is the STA in the target area.
Particularly; The STA that comprises in the target STA set is and satisfies condition: the difference of first signal strength values and secondary signal intensity level is greater than preset signal strength threshold and first signal strength values STA greater than the signal strength reference value of presetting, and these STA can confirm as the STA in the antenna coverage goal zone of the antenna On/Off that AP controls.
Fig. 3 is the flow chart of localization method embodiment three of the present invention; In localization method embodiment three of the present invention, can carry out step 101, step 102 and the step S103 of preset times repeatedly, perhaps; Can carry out step 201, step 202 and the step S103 of preset times repeatedly; Obtaining the target STA set of preset number, obtain the target STA intersection of sets collection of preset number then, is the STA in the target area with the STA in occuring simultaneously.Particularly, as shown in Figure 3, the method for present embodiment can comprise:
Step S201 when the emission function of target area antenna is opened, resolves the mutual message of at least one STA and AP, obtains first signal strength values of each STA, as first signal strength values of each STA.
Step S202 when the emission function of target area antenna is closed, resolves the mutual message of at least one STA and AP, obtains the secondary signal intensity level of each STA, as the secondary signal intensity level of each STA.
Step S103, from least one STA, the difference of obtaining first signal strength values and secondary signal intensity level greater than at least one STA of preset signal strength reference value, is formed target STA set greater than preset signal strength threshold and first signal strength values.
Step S301 judges whether carry out number of times reaches preset times.
Particularly, preset preset times in AP is repeatedly carried out the antenna On/Off action of target area; And measure first signal strength values and the secondary signal intensity level of STA by AP many times, that is, repeatedly execution in step 101, step 102 and step S103; Perhaps; Repeatedly execution in step 201, step 202 and step S103, each execution all generates a target STA set, and symbiosis becomes the target STA set of preset number.After the execution number of times reaches preset times, carry out subsequent step S302.
Step S302 obtains the target STA intersection of sets collection of presetting number, is the STA in the target area with the STA in occuring simultaneously.
Particularly, common factor is got in the target STA set of the preset number that generates among the step S301, confirmed the STA that in each target STA set, all exists, the STA in this common factor is the STA in the target area.That is, according to target STA set, confirm that the concrete grammar of the STA in the target area is: obtaining the target STA intersection of sets collection of preset number, is the STA in the target area with the STA in occuring simultaneously.
Present embodiment; Through a preset preset times in AP; Repeatedly first signal strength values and the secondary signal intensity level of the STA of target area are measured, are judged that has avoided in the single measurement because signal quality is not good etc. that factor causes locatees the generation of inaccurate situation to STA.
Fig. 4 is the structural representation of positioner embodiment one to embodiment three of the present invention; As shown in Figure 4; In positioner embodiment one of the present invention, this positioner can comprise: first acquiring unit 41, second acquisition unit 42, comparing unit 43 and decision unit 44.
Wherein, first acquiring unit 41, the access point AP that antenna connected when the emission function that is used to obtain the target area corresponding antenna was opened goes up the reception signal strength signal intensity of at least one related station STA, as first signal strength values of each STA;
Comparing unit 43; Be used for from least one STA; The difference of obtaining first signal strength values and secondary signal intensity level greater than at least one STA of preset signal strength reference value, is formed target STA set greater than preset signal strength threshold and first signal strength values;
Decision unit 44 is used for the set according to target STA, confirms the STA in the target area.
The positioner of present embodiment can be used to carry out the technical scheme of method embodiment one shown in Figure 1, and it realizes that principle is similar, repeats no more here.
Present embodiment; Through signalization intensity threshold and signal strength reference value in advance in positioner; And, calculate the reception signal strength values of the related STA of AP by the emission function of the antenna in AP control On/Off coverage goal zone, come the STA in the target area is positioned; Realize using an AP to the function that STA positions, improved the efficient of location.
The structural representation of positioner embodiment two of the present invention is as shown in Figure 4, and in positioner embodiment two of the present invention, this positioner can comprise: first acquiring unit 41, second acquisition unit 42, comparing unit 43 and decision unit 44.
First acquiring unit 41 specifically is used for when the emission function of antenna is opened, resolving the mutual message of at least one STA and AP, obtains first signal strength values of each STA;
Comparing unit 43; Be used for from least one STA; The difference of obtaining first signal strength values and secondary signal intensity level greater than at least one STA of preset signal strength reference value, is formed target STA set greater than preset signal strength threshold and first signal strength values;
Decision unit 44 is used for the set according to target STA, confirms the STA in the target area.
The positioner of present embodiment can be used to carry out the technical scheme of method embodiment two shown in Figure 2, and it realizes that principle is similar, repeats no more here.
Present embodiment; Through signalization intensity threshold and signal strength reference value in advance in positioner; And, calculate the reception signal strength values of the related STA of AP by the emission function of the antenna in AP control On/Off coverage goal zone, come the STA in the target area is positioned; Realize using an AP to the function that STA positions, improved the efficient of location.
In the positioner of the present invention shown in Figure 4, decision unit 44 is used for specifically confirming that the STA of said target STA set is the STA in the said target area.
The structural representation of positioner embodiment three of the present invention is as shown in Figure 4, and in positioner embodiment three of the present invention, this positioner can comprise: first acquiring unit 41, second acquisition unit 42, comparing unit 43 and decision unit 44.
First acquiring unit 41 specifically is used for when the emission function of antenna is opened, resolving the mutual message of at least one STA and AP, obtains first signal strength values of each STA;
Comparing unit 43; Be used for from least one STA; The difference of obtaining first signal strength values and secondary signal intensity level greater than at least one STA of preset signal strength reference value, is formed target STA set greater than preset signal strength threshold and first signal strength values;
Decision unit 44 is used for the set according to target STA, confirms the STA in the target area.
And in positioner embodiment three of the present invention, first acquiring unit 41, second acquisition unit 42 and comparing unit 43 specifically are used for opening preset times repeatedly, obtain the target STA set of preset number; Decision unit 44 specifically is used to obtain the target STA intersection of sets collection of preset number, is the STA in the target area with the STA in occuring simultaneously.
The positioner of present embodiment can be used to carry out the technical scheme of method embodiment three shown in Figure 3, and it realizes that principle and technique effect are similar, repeats no more here.
Present embodiment; Through a preset preset times in positioner; Repeatedly first signal strength values and the secondary signal intensity level of the STA of target area are measured, are judged that has avoided in the single measurement because signal quality is not good etc. that factor causes locatees the generation of inaccurate situation to STA.
Fig. 5 is the structural representation of WLAN embodiment one of the present invention, and as shown in Figure 5, the WLAN of present embodiment can comprise:
Fig. 6 is the structural representation of WLAN embodiment two of the present invention, and as shown in Figure 6, the WLAN of present embodiment can comprise:
Above-mentioned WLAN embodiment one and embodiment two; Through in the AP outside or set inside one location device, and in positioner signalization intensity threshold and signal strength reference value in advance, and by the emission function of the antenna in AP control On/Off coverage goal zone; Calculate the reception signal strength values of the related STA of AP; Come the STA in the target area is positioned, realized using an AP, improved the efficient of location the function that STA positions.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each method embodiment can be accomplished through the relevant hardware of program command.Aforesaid program can be stored in the computer read/write memory medium.This program the step that comprises above-mentioned each method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
What should explain at last is: above each embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although the present invention has been carried out detailed explanation with reference to aforementioned each embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, perhaps to wherein part or all technical characteristic are equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (12)
1. a localization method is characterized in that, comprising:
Steps A. the access point AP that said antenna connected when the emission function that obtains the target area corresponding antenna was opened goes up the reception signal strength signal intensity of at least one related station STA, as first signal strength values of each said STA;
Said AP went up the reception signal strength signal intensity of related said at least one STA when the emission function that step B. obtains said antenna was closed, as the secondary signal intensity level of each said STA;
Step C. is from said at least one STA; The difference of obtaining said first signal strength values and said secondary signal intensity level greater than at least one STA of preset signal strength reference value, is formed target STA set greater than preset signal strength threshold and said first signal strength values;
Step D. gathers according to said target STA, confirms the STA in the said target area.
2. method according to claim 1 is characterized in that,
Said steps A comprises: when the emission function of said antenna is opened, resolve the mutual message of said at least one STA and said AP, obtain first signal strength values of each said STA;
Said step B comprises: when the emission function of said antenna is closed, resolve the mutual message of said at least one STA and said AP, obtain the secondary signal intensity level of each said STA.
3. method according to claim 2 is characterized in that, said step B also comprises:
In the time can't obtaining the mutual message of said STA and said AP, confirm that the said secondary signal intensity level of said STA is 0.
4. according to any described method in the claim 1 to 3, it is characterized in that said step D comprises:
Confirm that the STA in the said target STA set is the STA in the said target area.
5. according to any described method in the claim 1 to 3, it is characterized in that,
After the said step C, also comprise: the steps A of carrying out preset times is repeatedly obtained the said target STA set of preset number to step C;
Said step D comprises: obtaining the target STA intersection of sets collection of said preset number, is the STA in the said target area with the STA in the said common factor.
6. a positioner is characterized in that, comprising:
First acquiring unit, the access point AP that said antenna connected when the emission function that is used to obtain the target area corresponding antenna was opened goes up the reception signal strength signal intensity of at least one related station STA, as first signal strength values of each said STA;
Second acquisition unit, said AP went up the reception signal strength signal intensity of related said at least one STA when the emission function that is used to obtain said antenna was closed, as the secondary signal intensity level of each said STA;
Comparing unit; Be used for from said at least one STA; The difference of obtaining said first signal strength values and said secondary signal intensity level greater than at least one STA of preset signal strength reference value, is formed target STA set greater than preset signal strength threshold and said first signal strength values;
Decision unit is used for confirming the STA in the said target area according to said target STA set.
7. device according to claim 6 is characterized in that,
Said first acquiring unit specifically is used for when the emission function of said antenna is opened, resolving the mutual message of said at least one STA and said AP, obtains first signal strength values of each said STA;
Said second acquisition unit specifically is used for when the emission function of said antenna is closed, resolving the mutual message of said at least one STA and said AP, obtains the secondary signal intensity level of each said STA.
8. device according to claim 7 is characterized in that,
Said second acquisition unit also specifically is used in the time can't obtaining the mutual message of said STA and said AP, confirms that the said secondary signal intensity level of said STA is 0.
9. according to the described device of claim 6 to 8, it is characterized in that,
Said decision unit is used for specifically confirming that the STA of said target STA set is the STA in the said target area.
10. according to the described device of claim 6 to 8, it is characterized in that,
Said first acquiring unit, said second acquisition unit and said comparing unit specifically are used for opening preset times repeatedly, obtain the said target STA set of preset number;
Said decision unit specifically is used to obtain the target STA intersection of sets collection of said preset number, is the STA in the said target area with the STA in the said common factor.
11. WLAN WLAN; It is characterized in that, comprising: access point AP, the antenna, the station STA that is connected with said antenna wireless that are connected with said access point A P and be connected with said AP like any described positioner in the claim 6 to 10.
12. WLAN according to claim 11 is characterized in that,
Said positioner is arranged in the said AP.
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| CN2012103255677A CN102833854A (en) | 2012-09-05 | 2012-09-05 | Positioning method, device and wireless local area network |
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| CN2012103255677A CN102833854A (en) | 2012-09-05 | 2012-09-05 | Positioning method, device and wireless local area network |
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| CN109959894A (en) * | 2017-12-26 | 2019-07-02 | 深圳市优必选科技有限公司 | Localization method and terminal device |
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Application publication date: 20121219 |