CN105338588A - Method and device for adjusting transmitting power of access point - Google Patents
Method and device for adjusting transmitting power of access point Download PDFInfo
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- CN105338588A CN105338588A CN201410309355.9A CN201410309355A CN105338588A CN 105338588 A CN105338588 A CN 105338588A CN 201410309355 A CN201410309355 A CN 201410309355A CN 105338588 A CN105338588 A CN 105338588A
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Abstract
The invention discloses a method and device for adjusting the transmitting power of an access point. The method and device are applied to a wireless local area network system including a terminal (STA) and an access point (AP). According to the method and device, as for an STA active scanning mode, the transmitting power of the AP is adjusted in the connection establishing process of the AP and the STA. The method includes the following steps that: A, before receiving a probe request message of the STA, the AP periodically transmits beacon messages to the STA with first transmitting power lower than maximum transmitting power of the AP; and B, after receiving the probe request of the STA, the AP establishes a connection with the STA with second transmitting power higher than first transmitting power. The invention also discloses a device for adjusting the transmitting power of an access point. With the method and device of the invention adopted, under the condition that connection establishment is not affected, the power consumption of the AP can be decreased, and radiation can be reduced.
Description
Technical field
The present invention relates to network communication technology field, particularly a kind of method and device adjusting switch-in point transmitting power.
Background technology
WLAN (WirelessLocalAccessNetwork, WLAN (wireless local area network)) technology is a kind of technology based on 802.11 series standards, compare with existing ethernet local area network, wireless local area network technology has a very large difference, and namely this technology uses radio frequency signal to replace wired transmissions medium to transmit and receive data bag.As the AP (AccessPoint of an important component part of WLAN (wireless local area network), radio reception device), be become wireless signal to send the data transaction received from cable network (such as internet), and convert the wireless signal received to data and be forwarded to cable network.
From energy-conserving and environment-protective, and reduce radio-frequency radiation to the healthy aspect consideration that may affect.We wish that AP can keep lower transmitting power in unnecessary.Be adjusted to higher transmitting power when needs, ensure radio frequency signal quality.
Existing a kind of implementation method is configured in advance AP is low-power consumption mode, transmitting power is reduced to a lower level, STA (Station, terminal) reach the standard grade after, namely after STA and AP connects, again according to the transmitting power of receiving sensitivity adjustment AP, here, STA can be a kind of mobile terminal of mobile phone etc., but the transmitting power of AP is lower all the time before connecting like this, the detection response message that AP replies to Station also can only send with lower power, the network signal intensity of Station perception is poor thus, also the network information of AP around cannot just correctly be obtained, and then cause Station cannot connect with the AP of optimum position.And if to ensure that Station can connect with best AP, then the transmitting power of AP just can not fall very low, also just cannot reduce power consumption and radiation.Ensure that connection establishment has just become conflict with reduction power consumption.
Can find out, existing scheme is before connection establishment, or with peak power work, or with pre-configured lower-wattage work, it inherently carries out work with a power.When working with peak power, power consumption can be caused large, and radiation is large, and when working with lower-wattage, this lowest power also cannot arrange too low, otherwise easily causes Station cannot connect with best AP.
Summary of the invention
The object of the present invention is to provide a kind of method and the device that adjust switch-in point transmitting power, AP power consumption can be reduced when not affecting connection establishment, reduce radiation.
For achieving the above object, the invention provides a kind of method adjusting switch-in point transmitting power, be applied to the wireless local area network (WLAN) system comprising terminal STA and access point AP, for STA active scan mode, adjust AP transmitting power in AP and STA connects process, the method comprises:
A, AP, before receiving the probe requests thereby message of STA, periodically send beacon Beacon message to STA with the first transmitting power lower than the most high transmit power of AP;
B, AP, after the probe requests thereby receiving STA, with the second transmitting power higher than the first transmitting power, connect with STA.
For achieving the above object, present invention also offers a kind of method adjusting switch-in point transmitting power, be applied to the wireless local area network (WLAN) system comprising terminal STA and access point AP, for STA drive sweep mode, adjust AP transmitting power in AP and STA connects process, the method comprises:
A1, AP periodically send beacon Beacon message to STA with the 3rd transmitting power lower than the most high transmit power of AP, and regularly increase the 3rd transmitting power to the 4th transmitting power, to make STA scan best AP, thus initiate authentication request to this AP;
B1, AP, after the authentication request receiving STA, connect with described 4th transmitting power and STA.
For achieving the above object, present invention also offers a kind of device adjusting switch-in point transmitting power, be applied to the access point in wireless local area network (WLAN) system, this device comprises:
First transmitting element, for receive STA at AP probe requests thereby message before, periodically to send beacon Beacon message to STA lower than the first transmitting power of the most high transmit power of AP;
First linkage unit, for receive STA at AP probe requests thereby after, with the second transmitting power higher than the first transmitting power, connect with STA.
For achieving the above object, present invention also offers a kind of device adjusting switch-in point transmitting power, be applied to the access point in wireless local area network (WLAN) system, this device comprises:
Second transmitting element, periodically beacon Beacon message is sent to STA with the 3rd transmitting power lower than the most high transmit power of AP for AP, and regularly increase the 3rd transmitting power to the 4th transmitting power, to make STA scan best AP, thus initiate authentication request to this AP;
Second linkage unit, for receive STA at AP authentication request after, connect with described 4th transmitting power and STA.
In sum, the embodiment of the present invention is once after in STA active scan mode, AP receives the probe requests thereby of STA, or after in STA drive sweep mode, AP receives the authentication request of STA, the transmitting power of AP all can improve, instead of as in the process connected at STA and AP in the prior art, AP transmitting power keeps immobilizing always.Like this, by the dynamic conditioning to AP transmitting power, make AP can reduce power consumption in unnecessary, reduce radiation, be adjusted to higher transmitting power when being necessary, ensure the quality of radio frequency signal.
Accompanying drawing explanation
Fig. 1 is the flow chart that under STA active scan mode, AP and STA connects.
Fig. 2 is the schematic flow sheet of the method for first embodiment of the invention adjustment switch-in point transmitting power.
Fig. 3 is the flow chart that under STA drive sweep mode, AP and STA connects.
Fig. 4 is the schematic flow sheet of the method for second embodiment of the invention adjustment switch-in point transmitting power.
Fig. 5 is the structural representation of the device of the adjustment switch-in point transmitting power being applied to said method in first embodiment of the invention.
Fig. 6 is the structural representation of the device of the adjustment switch-in point transmitting power being applied to said method in second embodiment of the invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, to develop simultaneously embodiment referring to accompanying drawing, the present invention program is described in further detail.
Under the present invention passes through to be described in STA active scan mode and STA drive sweep mode respectively, how in AP and STA connects process, dynamic conditioning to be carried out to AP transmitting power, once after in STA active scan mode, AP receives the probe requests thereby of STA, or after in STA drive sweep mode, AP receives the authentication request of STA, the transmitting power of AP all can improve, instead of as in the process connected at STA and AP in the prior art, AP transmitting power keeps immobilizing always.The dynamic flexible adjustment that the present invention is launched by AP, thus realize AP can reduce power consumption in unnecessary, reduces radiation, can not affect again the scanning result of STA to network environment simultaneously, can normal and optimum position AP connect.
Embodiment one
Fig. 1 is the flow chart that under STA active scan mode, AP and STA connects.
Step 101, STA send probe requests thereby (ProbeRequest) message by broadcast to AP;
Step 102, STA receive probe response (ProbeResponse) message of AP, obtain radio network information;
Step 103, STA send the license of authentication request (AuthenticationRequest) request authentication to AP;
Step 104, STA receive authentication response (AuthenticationResponse) message of AP;
Step 105, STA initiate connection request (AssociationRequest) message to AP again;
Step 106, AP are to STA loopback connection response (AssociationResponse) message.
So far, STA and AP sets up connection.
Fig. 2 is the schematic flow sheet of the method for first embodiment of the invention adjustment switch-in point transmitting power, be applied to the wireless local area network (WLAN) system comprising terminal STA and access point AP, for STA active scan mode, adjust AP transmitting power in AP and STA connects process, the method specifically comprises:
Step 201, AP, before receiving the probe requests thereby message of STA, periodically send beacon Beacon message to STA with the first transmitting power lower than the most high transmit power of AP;
Step 202, AP, after the probe requests thereby receiving STA, with the second transmitting power higher than the first transmitting power, connect with STA.
Specifically in step 202., AP replys detection response message with the second transmitting power to STA, authentication response message, and connection response message, sets up connection to AP and STA.
Enumerate concrete scene to be below described:
No matter STA is active scan mode or drive sweep mode, and AP periodically can send beacon Beacon message to STA as access point always.Therefore, receive the probe requests thereby of STA at AP before, by user, the transmitting power of AP is set, keep lower transmitting power, the embodiment of the present invention first transmitting power is set to 10% of the most high transmit power of AP, therefore, AP periodically sends beacon Beacon message to STA with 10% of most high transmit power.It should be noted that, in the present embodiment, the first transmission power setting is 10% of the most high transmit power of AP by user, but be not limited to this, user can according to embody rule by the first transmission power setting on any lower-wattage, because under STA active scan mode, even if AP at lower power, the probe requests thereby that STA initiates also can be received, so the unnecessary AP of setting has high transmit power.But, when STA receives the detection response message of AP, must guarantee that the network signal intensity of STA perception is higher, could the correct network information obtaining AP around.
So AP, after the probe requests thereby receiving STA, is set by user, improved by its own transmission power, the transmission power level after raising is higher than the first transmitting power, to ensure that STA normally can get the network information of AP.The embodiment of the present invention second transmitting power is increased to the most high transmit power of AP, therefore, AP replys detection response message with most high transmit power to STA, like this, the detection response message that AP replies to STA sends with higher power, the network signal intensity that perceives of STA is very strong thus, correctly can obtain the network information of AP around, thus the AP of STA and optimum position is connected.It should be noted that, in the present embodiment, the second transmission power setting is the most high transmit power of AP by user, but be not limited to this, user can according to embody rule by the second transmission power setting on any higher-wattage, make AP send detection response message to STA with high transmit power, thus make STA can obtain the signal of AP well.
Next, through certification and connection procedure, STA and AP sets up connection.The present invention is after the probe requests thereby receiving STA, AP transmitting power is increased to higher level by user, afterwards, in follow-up connection procedure, capital remains in this high transmit power, therefore, when AP replys authentication response and connection response to STA, still carry out with the second higher transmitting power.Like this, the signal that STA can obtain AP is well conducive to.
After STA and AP sets up connection, carry out the transmission of packet between AP and STA, at this moment, AP can adjust transmitting power dynamically according to the receiving sensitivity of STA (RSSI).If the receiving sensitivity of STA is lower, just improve the transmitting power of AP; If the receiving sensitivity of STA is higher, just reduce the transmitting power of AP.Thus AP is worked as required on a comparatively suitable power, ensure the quality of radio frequency signal.
It should be noted that, if having failed in the process connected, transmitting power is reduced to the low power value of acquiescence by AP, the first transmitting power not only but also before can being down to, and waits for that STA initiates probe requests thereby, re-establishes connection.
Embodiment two
Fig. 3 is the flow chart that under STA drive sweep mode, AP and STA connects.
First, AP periodically sends beacon Beacon message to STA, to make STA scan best AP, thus initiates authentication request to this AP;
After step 301, STA scan AP, send the license of authentication request (AuthenticationRequest) request authentication to AP;
Step 302, STA receive authentication response (AuthenticationResponse) message of AP;
Step 303, STA initiate connection request (AssociationRequest) message to AP again;
Step 304, AP are to STA loopback connection response (AssociationResponse) message.
So far, STA and AP sets up connection.
Fig. 4 is the schematic flow sheet of the method for second embodiment of the invention adjustment switch-in point transmitting power, be applied to the wireless local area network (WLAN) system comprising terminal STA and access point AP, for STA drive sweep mode, this embodiment is also adjust AP transmitting power in AP and STA connects process, and the method specifically comprises:
Step 401, AP periodically send beacon Beacon message to STA with the 3rd transmitting power lower than the most high transmit power of AP, and regularly increase the 3rd transmitting power to the 4th transmitting power, to make STA scan best AP, thus initiate authentication request to this AP;
Step 402, AP, after the authentication request receiving STA, connect with described 4th transmitting power and STA.
Specifically in step 402, AP replys authentication response message with the 4th transmitting power to STA, and connection response message, sets up connection to AP and STA.
Wherein, the cycle sending Beacon message with the 4th transmitting power is send the N in the cycle of Beacon message doubly with the 3rd transmitting power, N be greater than 1 positive integer.
This is because, because STA adopts drive sweep mode in the present embodiment, if AP keeps lower transmitting power to send beacon Beacon message always, the AP signal strength signal intensity that STA scans is more weak, be unfavorable for that STA searches this AP thus initiates authentication request, so, when AP sends Beacon message with low power period, regular increase transmitting power, enables STA search the AP of optimum position.
Enumerate concrete scene to be below described:
AP periodically can send beacon Beacon message to STA as access point always, in the present embodiment, send the cycle T=1ms of beacon Beacon message to STA with the 3rd transmitting power, send the cycle T=10s of beacon Beacon message to STA with the 4th transmitting power, the 10%, four transmitting power that 3rd transmitting power is set to the most high transmit power of AP is set to the most high transmit power of AP.Therefore, AP sends beacon Beacon message with the 3rd transmitting power to STA every 1ms, sends beacon Beacon message every 10s with the 4th transmitting power to STA.
After STA searches AP according to the Beacon message sent with high transmit power, authentication request will be sent to AP, AP after the authentication request receiving STA, in follow-up connection procedure, capital remains in this high transmit power, replys authentication response and connection response to STA.Like this, the signal that STA can obtain AP is well conducive to.
After STA and AP sets up connection, carry out the transmission of packet between AP and STA, at this moment, AP can adjust transmitting power dynamically according to the receiving sensitivity of STA (RSSI).If the receiving sensitivity of STA is lower, just improve the transmitting power of AP; If the receiving sensitivity of STA is higher, just reduce the transmitting power of AP.Thus AP is worked as required on a comparatively suitable power, ensure the quality of radio frequency signal.
It should be noted that, if having failed in the process connected, then repeated execution of steps A1, again waits for that STA searches this AP, thus initiates authentication request, re-establish connection.
To sum up, according to the explanation of above-mentioned two embodiments, in the process that the solution of the present invention connects at STA and AP, in unnecessary, AP is adjusted to lower transmitting power, when needs, AP is adjusted to higher transmitting power.Like this, AP can reduce power consumption in unnecessary, reduces radiation, simultaneously can not affect again the scanning result of STA to network environment, can normal and optimum position AP connect.
Based on same inventive concept, the present invention also proposes a kind of device adjusting switch-in point transmitting power, see Fig. 5, Fig. 5 is the structural representation of the device of the adjustment switch-in point transmitting power being applied to said method in first embodiment of the invention, be applied to the access point in wireless local area network (WLAN) system, this device comprises:
First transmitting element 501, for receive STA at AP probe requests thereby message before, periodically to send beacon Beacon message to STA lower than the first transmitting power of the most high transmit power of AP;
First linkage unit 502, for receive STA at AP probe requests thereby after, with the second transmitting power higher than the first transmitting power, connect with STA.
Preferably, described first transmitting element 501, when AP and STA connects failure, also for AP transmitting power is reduced to the first transmitting power, periodically sends beacon Beacon message to STA with the first transmitting power.
In practical application, this device accessible site, on access point apparatus, when connecting with STA, realizes the adjustment of transmitting power.
The present invention also proposes a kind of device adjusting switch-in point transmitting power, see Fig. 6, Fig. 6 is the structural representation of the device of the adjustment switch-in point transmitting power being applied to said method in second embodiment of the invention, is applied to the access point in wireless local area network (WLAN) system, and this device comprises:
Second transmitting element 601, periodically beacon Beacon message is sent to STA with the 3rd transmitting power lower than the most high transmit power of AP for AP, and regularly increase the 3rd transmitting power to the 4th transmitting power, to make STA scan best AP, thus initiate authentication request to this AP;
Second linkage unit 602, for receive STA at AP authentication request after, connect with described 4th transmitting power and STA.
Preferably, described second transmitting element 601, when AP and STA connects failure, also for AP transmitting power is reduced to the 3rd transmitting power, periodically send beacon Beacon message to STA with the 3rd transmitting power, and regularly increase the 3rd transmitting power to the 4th transmitting power.
In practical application, this device accessible site, on access point apparatus, when connecting with STA, realizes the adjustment of transmitting power.
Above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. one kind adjusts the method for switch-in point transmitting power, be applied to the wireless local area network (WLAN) system comprising terminal STA and access point AP, for STA active scan mode, it is characterized in that, adjust AP transmitting power in AP and STA connects process, the method comprises:
A, AP, before receiving the probe requests thereby message of STA, periodically send beacon Beacon message to STA with the first transmitting power lower than the most high transmit power of AP;
B, AP, after the probe requests thereby receiving STA, with the second transmitting power higher than the first transmitting power, connect with STA.
2. the method for claim 1, is characterized in that, described first transmitting power is set by the user.
3. the method for claim 1, is characterized in that, described second transmitting power is the most high transmit power of AP be set by the user.
4. the method for claim 1, is characterized in that, after AP and STA connects, the method comprises further: AP is according to the receiving sensitivity adjustment transmitting power of STA.
5. the method for claim 1, is characterized in that, when AP and STA connects failure, AP transmitting power is reduced to the first transmitting power, repeated execution of steps A to B.
6. one kind adjusts the method for switch-in point transmitting power, be applied to the wireless local area network (WLAN) system comprising terminal STA and access point AP, for STA drive sweep mode, it is characterized in that, adjust AP transmitting power in AP and STA connects process, the method comprises:
A1, AP periodically send beacon Beacon message to STA with the 3rd transmitting power lower than the most high transmit power of AP, and regularly increase the 3rd transmitting power to the 4th transmitting power, to make STA scan best AP, thus initiate authentication request to this AP;
B1, AP, after the authentication request receiving STA, connect with described 4th transmitting power and STA.
7. method as claimed in claim 6, it is characterized in that, described 3rd transmitting power is set by the user;
Described 4th transmitting power is the most high transmit power of AP be set by the user.
8. method as claimed in claim 7, is characterized in that, the cycle sending Beacon message with the 4th transmitting power is send the N in the cycle of Beacon message doubly with the 3rd transmitting power, N be greater than 1 positive integer.
9. method as claimed in claim 6, it is characterized in that, after AP and STA connects, the method comprises further: AP is according to the receiving sensitivity adjustment transmitting power of STA.
10. method as claimed in claim 6, is characterized in that, when AP and STA connects failure, and repeated execution of steps A1 to B1.
11. 1 kinds of devices adjusting switch-in point transmitting power, be applied to the access point in wireless local area network (WLAN) system, this device comprises:
First transmitting element, for receive STA at AP probe requests thereby message before, periodically to send beacon Beacon message to STA lower than the first transmitting power of the most high transmit power of AP;
First linkage unit, for receive STA at AP probe requests thereby after, with the second transmitting power higher than the first transmitting power, connect with STA.
12. devices as claimed in claim 11, it is characterized in that, described first transmitting element, when AP and STA connects failure, also for AP transmitting power is reduced to the first transmitting power, periodically send beacon Beacon message to STA with the first transmitting power.
13. 1 kinds of devices adjusting switch-in point transmitting power, be applied to the access point in wireless local area network (WLAN) system, this device comprises:
Second transmitting element, periodically beacon Beacon message is sent to STA with the 3rd transmitting power lower than the most high transmit power of AP for AP, and regularly increase the 3rd transmitting power to the 4th transmitting power, to make STA scan best AP, thus initiate authentication request to this AP;
Second linkage unit, for receive STA at AP authentication request after, connect with described 4th transmitting power and STA.
14. devices as claimed in claim 13, it is characterized in that, described second transmitting element, when AP and STA connects failure, also for AP transmitting power is reduced to the 3rd transmitting power, periodically send beacon Beacon message to STA with the 3rd transmitting power, and regularly increase the 3rd transmitting power to the 4th transmitting power.
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| CN201410309355.9A CN105338588A (en) | 2014-07-01 | 2014-07-01 | Method and device for adjusting transmitting power of access point |
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| CN201410309355.9A CN105338588A (en) | 2014-07-01 | 2014-07-01 | Method and device for adjusting transmitting power of access point |
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| CN106131802A (en) * | 2016-07-05 | 2016-11-16 | 北京小米移动软件有限公司 | Data broadcasting method, data broadcaster and electronic equipment |
| CN107820303A (en) * | 2017-12-13 | 2018-03-20 | 广东欧珀移动通信有限公司 | Mobile terminal wireless local area network scan method and apparatus, computer equipment |
| CN109275173A (en) * | 2017-07-17 | 2019-01-25 | 中创通信技术（深圳）有限公司 | A kind of method, apparatus connected by force using WIFI and electronic equipment |
| CN110784906A (en) * | 2019-10-30 | 2020-02-11 | 珠海格力电器股份有限公司 | Wireless network distribution method and device, storage medium and processor |
| WO2022078238A1 (en) * | 2020-10-18 | 2022-04-21 | Oppo广东移动通信有限公司 | Bluetooth connection method and apparatus, bluetooth earphone, bluetooth device, and storage medium |
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| WO2022078238A1 (en) * | 2020-10-18 | 2022-04-21 | Oppo广东移动通信有限公司 | Bluetooth connection method and apparatus, bluetooth earphone, bluetooth device, and storage medium |
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