CN103220761A - Distributed access point (AP) dynamic power adjustment method in dense wireless local area network (WLAN) environment - Google Patents
Distributed access point (AP) dynamic power adjustment method in dense wireless local area network (WLAN) environment Download PDFInfo
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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
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Abstract
The invention discloses a distributed access point (AP) dynamic power adjustment method in a dense wireless local area network (WLAN) environment. The defect that the network change cannot be adapted in the process of reducing the AP energy consumption in the prior art is overcome. The method comprises the implementation steps that: a terminal establishes an access point information table; the access point AP adjusts the transmitting power according to the terminal connected with the access point AP at present under the condition that the service quality is met; the access point AP receives a new connecting request, responses the request and adjusts the transmitting power; the access point AP receives a connection release request, responses the request and performs switching determination and energy-saving operation; by waiting for a period of time, if any request is not received, the access point actively performs the switching determination and energy-saving operation. The access point can dynamically adjust the transmitting power according to the behavior characteristics of the terminal in the network, the network change is timely adapted, the energy consumption of the AP can be well reduced, the signal interference between APs is reduced, and the method can be used for the WLAN with dense AP configuration.
Description
Technical field
The invention belongs to communication technical field, be particularly related to the power dynamic adjusting method of a kind of access point AP, be applicable to the WLAN (wireless local area network) WLAN of intensive laying, under the condition that guarantees user's access service ability, reduce the energy consumption of network side, reduce the interference of signal between access point AP.
Background technology
In recent years, wireless local area network technology has obtained development rapidly, particularly in order to satisfy user's high bandwidth, user's mobility, and the reliability requirements of information, in the wlan network appearance on a large scale thereupon of the intensive layout AP of enterprise, office or school.
The mobile subscriber enters the Internet by WLAN, for it provides miscellaneous service, such as voice-over-net phone, professional VoIP, multimedia and video etc.In order to realize the stability of above-mentioned business, continual and steady network insertion becomes inevitable requirement, so at the beginning of the network planning, in order to satisfy user's demand, the layout of all AP all is to carry out the planning of AP according to a certain regional user's peak traffic, but because user's behavior has certain regularity, for example in the WLAN (wireless local area network) of dining room or coffee-house layout, only the user just can reach peak traffic in certain period, and the traffic carrying capacity in other periods is lower, particularly about morning in traffic carrying capacity be 0 substantially.Relevant research shows that also the time period that peak traffic appears in network is seldom, and wherein the AP most of the time all is to be in idle state.So cause network side unnecessary energy consumption to occur on the one hand among the WLAN of AP arranging according to peak traffic, also cause on the one hand AP and neighbor AP between interference ratio more serious.
Because the very fast development of modern communication technology, the energy consumption in information and communication technology (ICT) field has become a very important problem.In some countries, the energy consumption of access network has accounted for more than 50% of whole communications field energy consumption, and in wireless communication field, the energy consumption of access network has accounted for more than 80% especially.Swift and violent in the local WLAN number growth rate of arranging of enterprise or other, cause the number of AP to be exponential increase every year.No matter be to pay attention to energy consumption, so when promoting network performance, the energy consumption that reduces network side radio access point AP has attracted more and more people's concern from economic aspect or environmental protection aspect.
At above-mentioned energy consumption problem about the Access Network among the intensive WLAN, relevant solution had appearred in the last few years, main thought all is to turn off the AP of a part, perhaps reduce the transmitting power of AP, the network service that makes WLAN to provide is relevant with user's request, and concrete solution has RoD(resource on-demand) and ILP (integer linear programming).In the RoD scheme,,, open or close AP dynamically according to the traffic carrying capacity of current network with the AP cluster in the network.In the ILP scheme, the business demand of modelling network utilizes the thought of linear programming to find the solution the lowest energy consumption of the interior network of section sometime.But these schemes all exist certain deficiency.In the RoD scheme, the overlayable users of AP all in bunch is identical, and bunch in channel gain between the user of all AP and this bunch covering identical, very idealized of this model, the operability in the network of reality is poor.In the ILP model, if network size is bigger, the amount of calculation of finding the solution linear programming can become very big thereupon, and it is very high that time cost also can become, and causes this algorithm can not satisfy the requirement of network dynamic.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, under the condition that guarantees user's cut-in quality, propose distributed AP power dynamic adjusting method under a kind of intensive WLAN environment, to reduce the energy consumption of network one side AP, the signal that reduces between AP disturbs.
For achieving the above object, technical scheme of the present invention comprises the steps:
(1) in the network incipient stage, the access point AP in the network is at random according to the transmitting power work of a certain grade, and with the interval of 100ms and maximum transmitting power emission beacon frame, and is 0 with the mark position of beacon frame;
(2) j terminal t in the network
jScanning channel receives the beacon information that access point AP sends, and utilizes the beacon frame that receives to set up terminal t
jAccess-in point information, terminal t
jAccess-in point information comprise: terminal t
jThe access point set A
j, set A
jIn all access point AP cover terminal t
jMinimum emissive power, terminal t
jSelect the access point a of connection
sWith standby access point set B
j, concrete method for building up is described in dependent claims 1, j=1 wherein, and 2 ...., n;
(3) access point a
i, i=1,2 ...., m begins the stand-by period from the time that receives previous association request frame, access point a in this time period T
iWait for the access of terminal, and judge access point a in time period T
iWhether receive connection request:
If access point a
iDo not receive connection request, calculate access point a
iCover set T
iIn the minimum emissive power of all terminals
Adjust access point a
iCurrent transmitting power is
T wherein
iBe current and access point a
iThe set of all terminals that connect,
L wherein
I, jBe access point a
iCover terminal t
jMinimum emissive power, jump to step (4) after complete;
If access point a
iReceive connection request, then turn back to step (3);
(4) access point a
iRegularly the neighboring access point AP with it carries out information interaction, the current transmitting power of acquisition neighboring access point AP;
(5) judge access point a
iWhether receive new connection request, if do not receive new connection request execution in step (6), if receive new connection request, to access point a
iDo following processing in two kinds of situation:
If (5a) a
iCover new terminal t
N+1Minimum emissive power l
I, n+1Be less than or equal to a
iCurrent transmitting power
New terminal t
N+1Directly and a
iConnect the complete step (5) that forwards to afterwards;
If (5b) a
iCover new terminal t
N+1Minimum emissive power l
I, n+1Greater than a
iCurrent transmitting power
Respond this request, adjust a
iCurrent transmitting power
Value be l
I, n+1, promptly
Forward step (5) after complete to;
(6) judge access point a
iWhether receive the releasing connection request, if do not receive the releasing connection requests, execution in step (7) if receive the releasing connection requests, responds this request, and to access point a
iDo following processing:
(6a) with the mark position 1 of beacon frame, access point a
iSend after this beacon, the flag bit with the beacon frame is reduced to 0 immediately.
(6b) access point a
iReceive set T
iIn the Frame that comprises access-in point information of terminal that sends of terminal, obtain set T
iIn the access-in point information of each terminal;
(6c) access point a
iAccording to set T
iThe access-in point information of middle terminal is determined and access point a
iThe null terminator Null set U that connects
i, set U
iIn terminal satisfy:
Calculate access point a
iCover set T
i-U
iIn terminal minimum emissive power with
Difference:
Wherein
Be access point a
iCover set T
iIn the minimum emissive power of all terminals
(6d) access point a
iAccording to the terminal t that receives
uAccess-in point information, computing terminal t
uBe linked into access point a
lAfter, access point a
iTransmitting power is with respect to terminal t
uAccess point a when not inserting
lThe changing value of transmitting power:
T wherein
u∈ U
i, a
l∈ B
u, B
uBe terminal t
uAccess point set,
Be access point a
lCurrent transmit power, l
L, uBe access point a
lCover terminal t
uMinimum emissive power; In set B
uIn, obtain terminal t
uCorresponding minimum power changing value
(6e) handle set U according to the method for step (6d)
iIn all terminals, obtain the minimum power changing value of each terminal correspondence;
(6f) according to the value of trying to achieve in step (6c) and the step (6e), the total power change values of access point AP that computing network is all:
And determine U according to the size of D
iThe switching of middle terminal:
If D＞0, then U
iIn terminal can switch to standby access point AP, execution in step (6g);
If D≤0, then U
iIn terminal can not switch to standby access point AP, turn back to step (5);
(6g) pair set U
iIn terminal all carry out the active handover operation, make terminal t
uThe access point that switches to is for trying to achieve D
uPairing access point, wherein terminal t
u∈ U
iAfter switching is finished, adjust access point a
iCurrent transmitting power
Turn back to step (5);
(7) access point a
iThe time of a transmitting power adjustment begins to wait in the past, if do not receive connection request or remove connection request, then execution in step (6a)～(6g) in time period T1; If only receive connection request, then execution in step (5); If only receive the releasing connection request, execution in step (6) then is if receive connection request simultaneously and remove connection request, then preferential answering connection request.
The present invention has following advantage compared with prior art:
1. the present invention is according to the characteristic of channel between access point AP and the terminal, adjust the transmitting power of access point AP, make access point AP to realize covering, thereby realize that access point AP with minimum power work, has reduced the energy consumption of AP with minimum emissive power to terminal;
2. the present invention is according to the behavioral trait of terminal, set up three kinds of different trigger mechanisms, access point AP adjusts its transmitting power in a different manner according to different trigger conditions, realized the dynamic adjustment of access point AP transmitting power, thereby further reduce the energy consumption of AP, the signal that reduces between AP disturbs.
Description of drawings
Fig. 1 is the network model figure that the present invention uses;
Fig. 2 is an overview flow chart of the present invention;
Fig. 3 is the sub-process figure that dynamically adjusts switch-in point transmitting power among the present invention.
Embodiment
Below in conjunction with accompanying drawing content of the present invention is done and to be described in detail.
As shown in Figure 1, in the network model that the present invention uses, the coverage of its access point AP is relevant with its transmitting power, the transmitting power of access point AP adopts a plurality of centrifugal pumps among the present invention, the emitting power grade that different values is corresponding different, the emitting power grade of access point AP is with gathering K={1,2,, k} represents; Among the present invention, i access point in the network is designated as a
i, all access point AP are A={a in the network
i| i=1,2 ...., m}; J terminal is designated as t
j, the middle terminal of network is designated as T={t
j| j=1,2 ...., n}.
With reference to Fig. 2, performing step of the present invention is as follows:
Step 1: in the network incipient stage, the access point AP in the network is at random according to the transmitting power work of a certain grade, and with the interval of 100ms and maximum transmitting power emission beacon frame, and is 0 with the mark position of beacon frame;
The present invention has added " transmitting power of beacon " information to the beacon frame on the basis of 802.11 standards; The form of this information is as follows:
Message length accounts for five bytes altogether, is divided into four fields, and the shared length of each field as shown in Table 1; Wherein the value of Element id field is 43, shows that this information is the transmitting power of beacon; In the Length field the shared length of this information; The value of flag bit is 0 or 1, when the value of this flag bit is 0, terminal utilizes newly arrived beacon frame to set up or the access-in point information of new terminal more, when the value of flag bit is 1, terminal is according to after this beacon frame update access-in point information, sends the access-in point information of this terminal to its current access point AP that connects; The transmission power level of beacon is the double type of double precision, and unit is dBm.
The additional information of table one beacon frame
| Element?ID | Length | Flag bit | The transmitting power of beacon frame |
| 1 | 1 | 1 | 2 |
Step 2: the terminal t in the network
j, j=1,2 ...., n scans channel, receives the beacon that access point AP sends, and utilizes the beacon frame that receives to set up terminal t as follows
jAccess-in point information:
(2.1) according to the received power of the beacon frame that receives, determine terminal t
jThe access point set A
j: if terminal t
jReceive i access point a
iThe received power of the beacon frame that sends is more than or equal to minimum receive threshold p
Th, access point a then
iBe terminal t
jAn access point, otherwise access point a
iCan not be as terminal t
jAccess point;
(2.2) use terminal t
jAll access points constitute the access point set A
j: A
j={ a
i| p
I, j〉=p
Th, i=1,2 ...., m}, wherein p
I, jBe terminal t
jReceive a
iThe received power value of the beacon frame of emission, p
Th=-95dBm;
(2.3) set of computations A
jIn all access point AP cover terminal t
jMinimum emissive power:
a
i∈ A
j, wherein, l
I, jBe access point a
iCover terminal t
jMinimum emissive power, p
iBe access point a
iThe performance number of emission beacon frame;
Described set A
jIn access point and access point cover terminal t
jMinimum emissive power constituted terminal t
jOriginal access-in point information, terminal t
jAccess-in point information as shown in Table 2, write down set A in the table two
jIn APN and this access point cover terminal t
jMinimum emissive power.
Table two terminal t
jOriginal access-in point information
| APN | Access point covers terminal t jMinimal power values |
| a i,a i∈A j | l i,j |
| …… | …… |
Step 3: terminal t
jDetermine the access point a that this terminal selection connects according to original access-in point information
sWith standby access point set B
j, and with access point a
sConnect;
(3.1) determine terminal t
jSelect the access point a of connection
sWith standby access point set B
j:
With set A
jIn, p
S, jPairing access point is as access point a
s, terminal t
jTo access point a
sThe received power p of the beacon that sends
S, jSatisfy:
Standby access point set: B
j=A
j-{ a
s;
(3.2) terminal t
jTo access point a
sSend association request frame, with access point a
sConnect, simultaneously terminal t
jContinuation is according to the beacon frame update terminal t that receives
jAt the A described in step (2.2), (3.1)
j, l
I, j, B
jInformation;
The described A of step (2.2)
j, l
I, jAnd the described B of step (3.1)
jConstitute terminal t
jAccess-in point information;
Described association request frame is on the association request frame in 802.11 standards, has added " access point covers the minimum emissive power of terminal " information; The form of this information is as follows:
Message length accounts for four bytes altogether, is divided into three fields, and the shared length of each field as shown in Table 3; The value of field Element ID is 44, shows that this information is the minimum emissive power that access point covers terminal; In the Length field the shared length of this information; The value that access point covers the minimum emissive power of terminal is the double type of double precision, and unit is dBm.
Step 4: access point a
i, i=1,2 ...., m begins the stand-by period from the time that receives previous association request frame, access point a in this time period T
iWait for the access of terminal.
The additional information of table three association request frame
| Element?ID | Length | Access point covers the minimum emissive power of terminal |
| 1 | 1 | 2 |
Step 5: judge access point a in time period T
iWhether receive connection request, and according to differentiating the result to access point a
iDo following processing respectively:
If access point a
iDo not receive connection request, calculate access point a
iCover set T
iIn the minimum emissive power of all terminals
And adjustment access point a
iTransmitting power be:
T wherein
iBe current and access point a
iThe set of all terminals that connect, execution in step (6) after adjustment is finished;
If access point a
iReceive connection request, then return step (4), access point a
iContinue to wait for the access of terminal.
Step 6:, adjust the transmitting power of access point AP dynamically according to the behavioral trait of terminal.
With reference to Fig. 3, the concrete enforcement of this step is as follows:
(6a) access point a
iRegularly the neighboring access point AP with it carries out information interaction, the current transmitting power of acquisition neighboring access point AP.
(6b) judge access point a
iWhether receive new connection request, if receive new connection request, execution in step (6c); If do not receive new connection request, execution in step (6d).
(6c) judge a
iCover new terminal t
N+1Minimum emissive power l
I, n+1With a
iCurrent operating power
Magnitude relationship, according to judged result to access point a
iDo following processing respectively:
If a
iCover new terminal t
N+1Minimum emissive power l
I, n+1Be less than or equal to a
iCurrent operating power
New terminal t then
N+1Directly and a
iConnect, turn back to step (6b); If a
iCover new terminal t
N+1Minimum emissive power l
I, n+1Greater than a
iCurrent operating power
New terminal t
N+1With a
iConnect, and adjust
Value be:
After finishing, adjustment returns step (6b).
(6d) judge access point a
iWhether receive the releasing connection request, if do not receive the releasing connection requests, execution in step (6e) if receive the releasing connection requests, responds this request, and to access point a
iDo following processing:
(6d1) with access point a
iThe mark position 1 of beacon frame, access point a
iSend after this beacon, the flag bit with the beacon frame is reduced to 0 immediately;
(6d2) access point a
iReceive set T
iIn the Frame that comprises access-in point information of terminal that sends of terminal, obtain set T
iIn the access-in point information of each terminal;
(6d3) access point a
iAccording to set T
iThe access-in point information of middle terminal is determined and access point a
iThe null terminator Null set U that connects
i, set U
iIn terminal satisfy:
(6d4) calculate access point a
iCover set T
i-U
iIn terminal minimum emissive power with
Difference D
I, k 
Wherein
Be access point a
iCover set T
iIn the minimum emissive power of all terminals
Set T
i-U
iExpression is as set subclass U
iIn terminal all disconnect and access point a
iConnection the time, continue to keep and access point a
iThe terminal set that connects;
(6d5) access point a
iAccording to the terminal t that receives
uAccess-in point information, computing terminal t
uBe linked into access point a
lAfter, access point a
iTransmitting power is with respect to terminal t
uAccess point a when not inserting
lThe changing value d of transmitting power
U, l:
T wherein
u∈ U
i, a
l∈ B
u, B
uBe terminal t
uAccess point set,
Be access point a
lCurrent transmit power, l
L, uBe access point a
lCover terminal t
uMinimum emissive power;
(6d6) handle set B according to the method for step (6d5)
uIn all access points, and obtain terminal t
uCorresponding minimum power changing value:
(6d7) handle set U according to the method for step (6d6)
iIn all terminals, obtain the minimum power changing value of each terminal correspondence;
(6d8) D that tries to achieve according to step (6d4)
I, kAnd the minimum power changing value of trying to achieve in the step (6d7), the total power change values of access point AP that computing network is all:
And determine U according to the size of D
iThe switching of middle terminal:
If D＞0, then U
iIn terminal can switch to standby access point AP, execution in step (6d9);
If D≤0, then U
iIn terminal can not switch to standby access point AP, turn back to step (6b);
(6d9) pair set U
iIn terminal all carry out the active handover operation, make terminal t
uThe access point that switches to is for trying to achieve D
uPairing access point, wherein terminal t
u∈ U
iAfter switching is finished, adjust access point a
iCurrent transmitting power be:
Turn back to step (6b).
(6e) access point a
iThe time of a transmitting power adjustment begins to wait in the past, and according to access point a
iIn stand-by period section T1, whether receive connection request or remove connection request, do following processing respectively:
If in stand-by period section T1, do not receive connection request or remove connection request, then execution in step (6d1)～step (6d9);
If in stand-by period section T1, only receive connection request, execution in step (6b) then;
If in stand-by period section T1 if only receive releasing connection request, then execution in step (6d);
If receive connection request simultaneously and remove connection request, preferential answering connection request then, execution in step (6b).
Claims (2)
1. distributed AP power dynamic adjusting method under the intensive WLAN environment comprises the steps:
(1) in the network incipient stage, the access point AP in the network is at random according to the transmitting power work of a certain grade, and with the interval of 100ms and maximum transmitting power emission beacon frame, and is 0 with the mark position of beacon frame;
(2) j terminal t in the network
jScanning channel receives the beacon information that access point AP sends, and utilizes the beacon frame that receives to set up terminal t
jAccess-in point information, terminal t
jAccess-in point information comprise: terminal t
jThe access point set A
j, set A
jIn all access point AP cover terminal t
jMinimum emissive power terminal t
jSelect the access point a of connection
sWith standby access point set B
j, concrete method for building up is described in dependent claims 1, j=1 wherein, and 2 ...., n;
(3) access point a
i, i=1,2 ...., m begins the stand-by period from the time that receives previous association request frame, access point a in this time period T
iWait for the access of terminal, and judge access point a in time period T
iWhether receive connection request:
If access point a
iDo not receive connection request, calculate access point a
iCover set T
iIn the minimum emissive power of all terminals
Adjust access point a
iCurrent transmitting power is
T wherein
iBe current and access point a
iThe set of all terminals that connect,
L wherein
I, jBe access point a
iCover terminal t
jMinimum emissive power, jump to step (4) after complete;
If access point a
iReceive connection request, then turn back to step (3);
(4) access point a
iRegularly the neighboring access point AP with it carries out information interaction, the current transmitting power of acquisition neighboring access point AP;
(5) judge access point a
iWhether receive new connection request, if do not receive new connection request execution in step (6), if receive new connection request, to access point a
iDo following processing in two kinds of situation:
If (5a) a
iCover new terminal t
N+1Minimum emissive power l
I, n+1Be less than or equal to a
iCurrent transmitting power
New terminal t
N+1Directly and a
iConnect the complete step (5) that forwards to afterwards;
If (5b) a
iCover new terminal t
N+1Minimum emissive power l
I, n+1Greater than a
iCurrent transmitting power
Respond this request, adjust a
iCurrent transmitting power
Value be l
I, n+1, promptly
Forward step (5) after complete to;
(6) judge access point a
iWhether receive the releasing connection request, if do not receive the releasing connection requests, execution in step (7) if receive the releasing connection requests, responds this request, and to access point a
iDo following processing:
(6a) with the mark position 1 of beacon frame, access point a
iSend after this beacon, the flag bit with the beacon frame is reduced to 0 immediately.
(6b) access point a
iReceive set T
iIn the Frame that comprises access-in point information of terminal that sends of terminal, obtain set T
iIn the access-in point information of each terminal;
(6c) access point a
iAccording to set T
iThe access-in point information of middle terminal is determined and access point a
iThe null terminator Null set U that connects
i, set U
iIn terminal satisfy:
Calculate access point a
iCover set T
i-U
iIn terminal minimum emissive power with
Difference:
Wherein
Be access point a
iCover set T
iIn the minimum emissive power of all terminals
(6d) access point a
iAccording to the terminal t that receives
uAccess-in point information, computing terminal t
uBe linked into access point a
lAfter, access point a
iTransmitting power is with respect to terminal t
uAccess point a when not inserting
lThe changing value of transmitting power:
T wherein
u∈ U
i, a
l∈ B
u, B
uBe terminal t
uAccess point set,
Be access point a
lCurrent transmit power, l
L, uBe access point a
lCover terminal t
uMinimum emissive power; In set B
uIn, obtain terminal t
uCorresponding minimum power changing value
(6e) handle set U according to the method for step (6d)
iIn all terminals, obtain the minimum power changing value of each terminal correspondence;
(6f) according to the value of trying to achieve in step (6c) and the step (6e), the total power change values of access point AP that computing network is all:
And determine U according to the size of D
iThe switching of middle terminal:
If D＞0, then U
iIn terminal can switch to standby access point AP, execution in step (6g);
If D≤0, then U
iIn terminal can not switch to standby access point AP, turn back to step (5);
(6g) pair set U
iIn terminal all carry out the active handover operation, make terminal t
uThe access point that switches to is for trying to achieve D
uPairing access point, wherein terminal t
u∈ U
iAfter switching is finished, adjust access point a
iCurrent transmitting power
Turn back to step (5);
(7) access point a
iThe time of a transmitting power adjustment begins to wait in the past, if do not receive connection request or remove connection request, then execution in step (6a)～(6g) in time period T1; If only receive connection request, then execution in step (5); If only receive the releasing connection request, execution in step (6) then is if receive connection request simultaneously and remove connection request, then preferential answering connection request.
2. according to distributed AP power dynamic adjusting method under claims 1 described intensive WLAN environment, wherein the beacon frame that receives of the described utilization of step 2 is set up terminal t
jAccess-in point information, carry out as follows:
(2a) determine terminal t
jThe access point set A
j, if terminal t
jReceive i access point a
iThe received power of the beacon frame that sends is more than or equal to minimum receive threshold p
Th, then with access point a
iAs terminal t
jAn access point, otherwise access point a
iCan not be as terminal t
jAccess point;
(2b) use terminal t
jAll access points constitute the access point set A
j: A
j={ a
i| p
I, j〉=p
Th, i=1,2 ...., m}, wherein p
I, jBe terminal t
jReceive a
iThe received power value of the beacon frame of emission, p
Th=-95dBm;
(2c) set of computations A
jIn all access point AP cover terminal t
jMinimum emissive power l
I, j:
a
i∈ A
j, p wherein
iBe a
iThe performance number of emission beacon frame;
(2d) determine terminal t
jSelect the access point a of connection
sWith standby access point set B
j:
Standby access point set: B
j=A
j-{ a
s}
Will be in set A
jIn, terminal t
jPairing access point was as access point a when the received power of the beacon frame that access point is sent was maximum
s, i.e. terminal t
jTo access point a
sThe received power p of the beacon that sends
S, jSatisfy:
(2e) terminal t
jTo access point a
sSend association request frame, with access point a
sConnect, simultaneously terminal t
jContinuation is according to the beacon frame update terminal t that receives
jAt the A described in step (2b), (2c), (2d)
j, l
I, j, B
jInformation.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104540172A (en) * | 2014-12-29 | 2015-04-22 | 江苏中兴微通信息科技有限公司 | Unit area load balancing method based on position consciousness in WLAN system |
| CN105530049A (en) * | 2016-01-11 | 2016-04-27 | 北京邮电大学 | Load balancing method and device in indoor visible light heterogeneous network |
| CN105744610A (en) * | 2014-12-09 | 2016-07-06 | 电信科学技术研究院 | Method, system and device for adjusting transmitting power |
| CN108260196A (en) * | 2016-12-28 | 2018-07-06 | 中国移动通信集团北京有限公司 | A kind of transmission power control method and apparatus |
| CN108769996A (en) * | 2018-04-18 | 2018-11-06 | 网易（杭州）网络有限公司 | Beaconing nodes layout method and localization method used for positioning |
| CN109413730A (en) * | 2018-12-14 | 2019-03-01 | 锐捷网络股份有限公司 | Power regulating method, access controller, system and storage medium |
| CN110392420A (en) * | 2019-06-03 | 2019-10-29 | 北京奇安信科技有限公司 | A kind of accurate control processing method and processing device for managing region |
| CN114007258A (en) * | 2021-09-23 | 2022-02-01 | 深圳市联洲国际技术有限公司 | Method, device, equipment and storage medium for adjusting transmitting power of wireless networking system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110292853A1 (en) * | 2010-05-28 | 2011-12-01 | Motorola Mobility, Inc. | Method and device for reducing power drain while camped on a wireless local area network |
| CN103068019A (en) * | 2013-01-08 | 2013-04-24 | 杭州华三通信技术有限公司 | Energy-saving method and energy-saving device of wireless local area network |
-
2013
- 2013-05-07 CN CN201310165563.1A patent/CN103220761B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110292853A1 (en) * | 2010-05-28 | 2011-12-01 | Motorola Mobility, Inc. | Method and device for reducing power drain while camped on a wireless local area network |
| CN103068019A (en) * | 2013-01-08 | 2013-04-24 | 杭州华三通信技术有限公司 | Energy-saving method and energy-saving device of wireless local area network |
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| CN105744610A (en) * | 2014-12-09 | 2016-07-06 | 电信科学技术研究院 | Method, system and device for adjusting transmitting power |
| CN104540172A (en) * | 2014-12-29 | 2015-04-22 | 江苏中兴微通信息科技有限公司 | Unit area load balancing method based on position consciousness in WLAN system |
| CN104540172B (en) * | 2014-12-29 | 2017-08-29 | 江苏中兴微通信息科技有限公司 | A kind of unit area load-balancing method realized in wlan system based on position |
| CN105530049A (en) * | 2016-01-11 | 2016-04-27 | 北京邮电大学 | Load balancing method and device in indoor visible light heterogeneous network |
| CN105530049B (en) * | 2016-01-11 | 2018-01-30 | 北京邮电大学 | Load-balancing method and device in a kind of indoor visible light heterogeneous network |
| CN108260196A (en) * | 2016-12-28 | 2018-07-06 | 中国移动通信集团北京有限公司 | A kind of transmission power control method and apparatus |
| CN108769996A (en) * | 2018-04-18 | 2018-11-06 | 网易（杭州）网络有限公司 | Beaconing nodes layout method and localization method used for positioning |
| CN108769996B (en) * | 2018-04-18 | 2022-03-25 | 杭州易现先进科技有限公司 | Beacon node layout method for positioning and positioning method |
| CN109413730A (en) * | 2018-12-14 | 2019-03-01 | 锐捷网络股份有限公司 | Power regulating method, access controller, system and storage medium |
| CN109413730B (en) * | 2018-12-14 | 2022-03-18 | 锐捷网络股份有限公司 | Power adjustment method, access controller, system and storage medium |
| CN110392420A (en) * | 2019-06-03 | 2019-10-29 | 北京奇安信科技有限公司 | A kind of accurate control processing method and processing device for managing region |
| CN114007258A (en) * | 2021-09-23 | 2022-02-01 | 深圳市联洲国际技术有限公司 | Method, device, equipment and storage medium for adjusting transmitting power of wireless networking system |
| CN114007258B (en) * | 2021-09-23 | 2023-09-08 | 成都市联洲国际技术有限公司 | Method, device, equipment and storage medium for adjusting transmission power of wireless networking system |
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