CN101925167A - Power control method and device of wireless local area network access point device - Google Patents
Power control method and device of wireless local area network access point device Download PDFInfo
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- CN101925167A CN101925167A CN2009100865871A CN200910086587A CN101925167A CN 101925167 A CN101925167 A CN 101925167A CN 2009100865871 A CN2009100865871 A CN 2009100865871A CN 200910086587 A CN200910086587 A CN 200910086587A CN 101925167 A CN101925167 A CN 101925167A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
- H04W52/343—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading taking into account loading or congestion level
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/143—Downlink power control
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Abstract
The invention discloses a power control method of a wireless local area network access point device, which comprises the following steps: using the wireless local area network access point device (AP) to obtain the current signal intensity or the data transmission quality; comparing the obtained signal intensity or the data transmission quality with a preset threshold, and obtaining the comparison result; and determining whether to adjust the transmission power of the wireless local area network access point device or not according to the comparison result. The invention further discloses a power control device of the wireless local area network access point device, which can realize energy conservation of the wireless local area network access point device through the flexible control of the transmission power.
Description
Technical field
The present invention relates to the control technology of Wireless Communication Equipment, relate in particular to a kind of Poewr control method and device of device of wireless local area network access point.
Background technology
Energy problem is the major issue of world's extensive concern in season, and numerous industry all with power saving as an important measurement index, the communications industry is no exception, the energy-conservation of mass communication equipment also can be made significant contribution for solving energy problem.Is important and a kind of technology of being used widely in the home network interconnection technique with Institute of Electrical and Electric Engineers (IEEE, Institute of Electrical and Electronics Engineers) 802.11 series of canonical for the wireless local area network technology on basis.Energy-conservation for WLAN devices provided relevant solution in IEEE802.11e, but these schemes are all at wireless lan client equipment, as the terminal of band WiMAX (Wi-Fi, Wireless Fidelity) function etc.Energy-conservation for device of wireless local area network access point (AP, Access Point) do not provide corresponding solution in the prior art.
In order to guarantee that other equipment can detect its existence, device of wireless local area network access point can send the beacon frame periodically towards periphery, and the cycle of transmission beacon frame can be adjusted according to actual needs; The essential characteristic such as title, ability that comprises device of wireless local area network access point in the beacon frame.Other equipment can be understood the essential characteristic of this device of wireless local area network access point, and can apply for communicating by letter with it by receiving the beacon frame.When device of wireless local area network access point passes through wireless transmission beacon frame, will work in unit such as its radio circuit and antenna, and can consume the power consumption of considerable part this moment; Transmitting power is high more, and its power consumption is just big more.Yet, when device of wireless local area network access point is in idle condition, when perhaps the device signal quality of communication better and not needs the larger data bandwidth with it, if device of wireless local area network access point will cause the waste of power consumption still with higher power emission data.
In sum, because existing device of wireless local area network access point can't be according to environment flexible and changeable in the practical application, therefore the transmitting power of adaptive dynamic adjustment self causes the waste of device of wireless local area network access point power consumption easily, can't realize the purpose of device energy conservation.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of Poewr control method and device of device of wireless local area network access point, to realize the energy-conservation of device of wireless local area network access point.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of Poewr control method of device of wireless local area network access point, this method comprises:
Device of wireless local area network access point obtains current signal intensity or data transmission quality;
The signal strength signal intensity obtained or data transmission quality and preset threshold value are compared, obtain comparative result;
Determine whether the transmitting power of self is adjusted according to described comparative result.
Described device of wireless local area network access point obtains current signal intensity from the Frame from client device; Described device of wireless local area network access point obtains data transmission quality by the packet loss of transmission data between statistics self and the client device.
Described the signal strength signal intensity obtained or data transmission quality and preset threshold value are compared, obtain comparative result, be specially:
If it is the signal strength signal intensity height that signal strength signal intensity of obtaining or data transmission quality, then obtain comparative result greater than preset threshold value, data transmission quality is good; Otherwise obtain comparative result is that signal strength signal intensity is low, and data transmission quality is poor.
Describedly determine whether the transmitting power of self is adjusted, be specially according to comparative result:
At described comparative result is the signal strength signal intensity height, when data transmission quality is good, reduces the transmitting power of self; At described comparative result is that signal strength signal intensity is low, during the data transmission quality difference, improves the transmitting power of self.
This method further comprises: when transmitting power reduces, and the periodic power that improves emission beacon frame.
Described when transmitting power reduces, the cycle of improving the power of emission beacon frame be the common beacon frame emission cycle positive integer doubly.
The present invention also provides a kind of output control device of device of wireless local area network access point, and this device comprises:
The information acquisition module is used to obtain device of wireless local area network access point current signal intensity or data transmission quality;
Comparison module is used for the signal strength signal intensity that will obtain or data transmission quality and preset threshold value and compares, and obtains comparative result;
Judge adjusting module, be used for determining whether the transmitting power of self is adjusted according to described comparative result.
Described comparison module is further used for, and during greater than preset threshold value, obtaining comparative result is the signal strength signal intensity height at the signal strength signal intensity of obtaining or data transmission quality, and data transmission quality is good; Otherwise obtain comparative result is that signal strength signal intensity is low, and data transmission quality is poor;
Accordingly, described judgement adjusting module is further used for, and is the signal strength signal intensity height at described comparative result, when data transmission quality is good, reduces the transmitting power of device of wireless local area network access point; At described comparative result is that signal strength signal intensity is low, during the data transmission quality difference, improves the transmitting power of device of wireless local area network access point.
Described judgement adjusting module is further used for, when transmitting power reduces, and the periodic power that improves emission beacon frame.
Described when transmitting power reduces, the cycle of improving the power of emission beacon frame be the common beacon frame emission cycle positive integer doubly.
The Poewr control method of a kind of device of wireless local area network access point provided by the present invention and device, according to the current demand signal intensity or the data transmission quality that obtain, the raising and the reduction of control transmitting power flexibly, thus realized the energy-conservation of device of wireless local area network access point, reduced equipment power dissipation; In addition, under the situation that reduces the device of wireless local area network access point transmitting power, periodically improve transmitting power, also guaranteed device of wireless local area network access point and can keep proper communication apart from equipment far away in order to emission beacon frame.
Description of drawings
Fig. 1 is the flow chart of the Poewr control method of a kind of device of wireless local area network access point of the present invention;
Fig. 2 is the composition structural representation of the output control device of a kind of device of wireless local area network access point of the present invention.
Embodiment
The technical solution of the present invention is further elaborated below in conjunction with the drawings and specific embodiments.
In order to make the device of wireless local area network access point can be according to the continuous variation of actual application environment, the transmitting power of adaptive dynamic adjustment self, thereby reach the purpose of device energy conservation, the Poewr control method of a kind of device of wireless local area network access point provided by the present invention, as shown in Figure 1, mainly may further comprise the steps:
Device of wireless local area network access point can read received signal intensity indication (RSSI, Received Signal Strength Indicator) information from the Frame from client device, to obtain current signal intensity; Can be by the information such as packet loss of transmission data between statistics device of wireless local area network access point and the client device, to characterize current data transmission quality.
Threshold value among the present invention can preestablish according to actual needs, and the signal strength signal intensity the obtained threshold value with default signal strength signal intensity is compared, and maybe the data transmission quality that the obtains threshold value with default data transmission quality is compared; If signal strength signal intensity of obtaining (RSSI value) or data transmission quality are greater than corresponding threshold, obtaining comparative result so is the signal strength signal intensity height, and data transmission quality is good; Otherwise obtaining comparative result is that signal strength signal intensity is low, and data transmission quality is poor.
According to comparative result, if the signal strength signal intensity height, data transmission quality is good, then reduces the transmitting power of self, is about to transmitting power and adjusts to low on the basis of current numerical value; If signal strength signal intensity is low, data transmission quality is poor, then improves the transmitting power of self, be about to transmitting power on the basis of current numerical value to the height adjustment.Concrete adjusting range can dispose corresponding strategy according to actual needs and control.
Preferable, the present invention also can progressively adjust by the transmitting power that collocation strategy is controlled device of wireless local area network access point, it is the operation of repeated execution of steps 101～103, realizing repeatedly adjustment, thereby make and reach preferable poised state between the height of transmitting power and the data transmission performance transmitting power.
As a kind of preferred embodiment of the present invention, when the transmitting power of adjusting device of wireless local area network access point reduces, can also periodically improve the power of this device of wireless local area network access point emission beacon frame; And the cycle of improving the power of emission beacon frame be the common beacon frame emission cycle positive integer doubly.For example: the common beacon frame emission cycle is 200ms (millisecond), signal strength signal intensity that the device of wireless local area network access point basis is obtained or data transmission quality are judged when needs reduce current transmitting power, except the transmitting power after the use reduction, and beyond the cycle transmission beacon frame with 200ms; Also need to improve the power of emission beacon frame, and with the beacon frame of transmitting power emission after improving, return to transmitting power emission packet and beacon frame after the reduction subsequently again every 1s (5 times common beacon frame emission cycles).
This under the situation that reduces the device of wireless local area network access point transmitting power, the periodic transmitting power that improves is in order to emission beacon frame, guaranteed that the equipment far away apart from device of wireless local area network access point can receive this beacon frame, thereby device of wireless local area network access point and the distance equipment far away that guarantees can keep proper communication.
For realizing above-mentioned Poewr control method, the present invention also provides a kind of output control device of device of wireless local area network access point, this device is applicable in the device of wireless local area network access point that as shown in Figure 2, this device comprises: information acquisition module 10, comparison module 20 and judgement adjusting module 30.
Wherein, information acquisition module 10 is used to obtain device of wireless local area network access point current signal intensity or data transmission quality, and offers comparison module 20; Further, information acquisition module 10 can obtain current signal intensity from the Frame from client device; Packet loss by transmission data between statistics device of wireless local area network access point and the client device obtains data transmission quality.
Judge adjusting module 30, be used for determining whether the transmitting power of self is adjusted according to comparative result.Further, be the signal strength signal intensity height at comparative result, when data transmission quality is good, reduce the transmitting power of device of wireless local area network access point; At comparative result is that signal strength signal intensity is low, during the data transmission quality difference, improves the transmitting power of device of wireless local area network access point.
As a kind of preferred embodiment of the present invention, judge that adjusting module 30 is further used for, when transmitting power reduces, the periodic power that improves emission beacon frame, and the cycle of improving the power of emission beacon frame be the common beacon frame emission cycle positive integer doubly.
In sum, the Poewr control method of a kind of device of wireless local area network access point provided by the present invention and device, according to the current demand signal intensity or the data transmission quality that obtain, the raising and the reduction of control transmitting power flexibly, realize the energy-conservation of device of wireless local area network access point, reduced equipment power dissipation; In addition, under the situation that reduces the device of wireless local area network access point transmitting power, periodically improve transmitting power, also guaranteed device of wireless local area network access point and can keep proper communication apart from equipment far away in order to emission beacon frame.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (10)
1. the Poewr control method of a device of wireless local area network access point is characterized in that, this method comprises:
Device of wireless local area network access point obtains current signal intensity or data transmission quality;
The signal strength signal intensity obtained or data transmission quality and preset threshold value are compared, obtain comparative result;
Determine whether the transmitting power of self is adjusted according to described comparative result.
2. according to the Poewr control method of the described device of wireless local area network access point of claim 1, it is characterized in that described device of wireless local area network access point obtains current signal intensity from the Frame from client device; Described device of wireless local area network access point obtains data transmission quality by the packet loss of transmission data between statistics self and the client device.
3. according to the Poewr control method of claim 1 or 2 described device of wireless local area network access point, it is characterized in that, described the signal strength signal intensity obtained or data transmission quality and preset threshold value compared, obtain comparative result, be specially:
If it is the signal strength signal intensity height that signal strength signal intensity of obtaining or data transmission quality, then obtain comparative result greater than preset threshold value, data transmission quality is good; Otherwise obtain comparative result is that signal strength signal intensity is low, and data transmission quality is poor.
4. according to the Poewr control method of the described device of wireless local area network access point of claim 3, it is characterized in that, describedly determine whether the transmitting power of self is adjusted, be specially according to comparative result:
At described comparative result is the signal strength signal intensity height, when data transmission quality is good, reduces the transmitting power of self; At described comparative result is that signal strength signal intensity is low, during the data transmission quality difference, improves the transmitting power of self.
5. according to the Poewr control method of the described device of wireless local area network access point of claim 4, it is characterized in that this method further comprises: when transmitting power reduces, the periodic power that improves emission beacon frame.
6. according to the Poewr control method of the described device of wireless local area network access point of claim 5, it is characterized in that, described when transmitting power reduces, the cycle of improving the power of emission beacon frame be the common beacon frame emission cycle positive integer doubly.
7. the output control device of a device of wireless local area network access point is characterized in that, this device comprises:
The information acquisition module is used to obtain device of wireless local area network access point current signal intensity or data transmission quality;
Comparison module is used for the signal strength signal intensity that will obtain or data transmission quality and preset threshold value and compares, and obtains comparative result;
Judge adjusting module, be used for determining whether the transmitting power of self is adjusted according to described comparative result.
8. according to the output control device of the described device of wireless local area network access point of claim 7, it is characterized in that described comparison module is further used for, at the signal strength signal intensity of obtaining or data transmission quality during greater than preset threshold value, obtaining comparative result is the signal strength signal intensity height, and data transmission quality is good; Otherwise obtain comparative result is that signal strength signal intensity is low, and data transmission quality is poor;
Accordingly, described judgement adjusting module is further used for, and is the signal strength signal intensity height at described comparative result, when data transmission quality is good, reduces the transmitting power of device of wireless local area network access point; At described comparative result is that signal strength signal intensity is low, during the data transmission quality difference, improves the transmitting power of device of wireless local area network access point.
9. the output control device of described device of wireless local area network access point according to Claim 8 is characterized in that described judgement adjusting module is further used for, when transmitting power reduces, and the periodic power that improves emission beacon frame.
10. according to the output control device of the described device of wireless local area network access point of claim 9, it is characterized in that, described when transmitting power reduces, the cycle of improving the power of emission beacon frame be the common beacon frame emission cycle positive integer doubly.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100865871A CN101925167A (en) | 2009-06-09 | 2009-06-09 | Power control method and device of wireless local area network access point device |
| PCT/CN2009/076106 WO2010142125A1 (en) | 2009-06-09 | 2009-12-28 | Power control method and device for wireless local area network (wlan) access point |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100865871A CN101925167A (en) | 2009-06-09 | 2009-06-09 | Power control method and device of wireless local area network access point device |
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| CN101925167A true CN101925167A (en) | 2010-12-22 |
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| CN2009100865871A Pending CN101925167A (en) | 2009-06-09 | 2009-06-09 | Power control method and device of wireless local area network access point device |
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| WO (1) | WO2010142125A1 (en) |
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