CN101854710A - Wireless access point and radio-frequency emission power regulation method thereof - Google Patents
Wireless access point and radio-frequency emission power regulation method thereof Download PDFInfo
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Abstract
The invention discloses a wireless access point and a radio-frequency emission power regulation method thereof. In the method, the wireless access point is used for continuously monitoring packet loss rate of a workstation which is connected with the wireless access point; and when the packet loss rate is less than a first threshold value, the radio-frequency emission power is reduced by the wireless access point step by step. By using the invention, on the premise that data pass between the wireless access point and the workstation is not affected, radio-frequency emission power can be reduced to the largest extent and the whole energy consumption of the wireless access point is reduced effectively.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of WAP (wireless access point) and radio-frequency emission power regulation method thereof.
Background technology
Advantages such as WLAN (wireless local area network) (Wireless Local abbreviates WLAN as) possesses the access speed height as a kind of network access mode, and it is simple and easy to connect up more and more are widely used in home network.The energy consumption that studies show that WLAN mainly concentrates on WAP (wireless access point) (Access Point, abbreviate AP as) base band (base band, abbreviate BB as) and radio frequency (Radio) module, the power consumption of Radio module accounts for about 50% under receiving mode, and the BB module accounts for 20%; And the power consumption of Radio module accounts for 91% under sending mode, and the BB module accounts for 3%.Therefore, no matter at sending mode or receiving mode, the power consumption of radio-frequency module all accounts for very big ratio.
In order to reduce the power consumption of radio-frequency module, at present the method that adopts mainly comprises: increase pilot signal (Beacon) at interval (Interval) give out a contract for a project, reduce radio-frequency emission power to reduce initiatively, (Power Amplify the abbreviates PA as) work etc. that stops the part power amplifier.Though these methods can reduce the energy consumption of radio-frequency module to a certain extent, these methods have all influenced user experience.For example, increasing Beacon Interval may cause the user to find that network development process is slack-off; To cause radio frequency coverage to diminish and reduce radio-frequency emission power simply and stop part PA work, thereby cause the user when using wireless network, may access network in some position, and then reduce user experience.
Summary of the invention
Main purpose of the present invention is to provide a kind of WAP (wireless access point) and radio-frequency emission power regulation method thereof, one of to address the above problem at least.
According to an aspect of the present invention, provide a kind of radio-frequency emission power regulation method of WAP (wireless access point), having comprised: WAP (wireless access point) continues to monitor the packet loss that is associated with the work station on it; Under the situation of packet loss less than first threshold, WAP (wireless access point) reduces the radio-frequency emission power of WAP (wireless access point) step by step.
According to a further aspect in the invention, provide a kind of WAP (wireless access point), having comprised: first monitoring modular is used to continue to monitor the packet loss of the work station that is associated with WAP (wireless access point); Judge module is used to judge that whether the current packet loss that monitors of first monitoring modular is less than first threshold, if then trigger the radio-frequency emission power that adjusting module reduces WAP (wireless access point) step by step; Adjusting module is used for the radio-frequency emission power according to the triggering adjustment WAP (wireless access point) of judge module.
By the present invention, WAP (wireless access point) is according to the packet loss of work station, adjust the radio-frequency emission power of WAP (wireless access point) step by step, thereby can be under guaranteeing that data between WAP (wireless access point) and the work station are by impregnable situation, reduction radio-frequency emission power as far as possible reduces the whole energy consumption of WAP (wireless access point) effectively.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation according to the WAP (wireless access point) of the embodiment of the invention one;
Fig. 2 is the structural representation according to the preferred wireless access point of the embodiment of the invention one;
Fig. 3 is the flow chart according to the radio-frequency emission power regulation method of the embodiment of the invention one;
Fig. 4 is the flow chart according to the preferred radio-frequency emission power regulation method of the embodiment of the invention one;
Fig. 5 is the application scenarios schematic diagram of the embodiment of the invention two;
Fig. 6 is the flow chart according to the radio-frequency emission power regulation method of the embodiment of the invention two;
Fig. 7 is the application scenarios schematic diagram of the embodiment of the invention three;
Fig. 8 is the flow chart according to the radio-frequency emission power regulation method of the embodiment of the invention three.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Embodiment one
Fig. 1 is the structural representation according to the WAP (wireless access point) of the embodiment of the invention one, and this WAP (wireless access point) comprises: first monitoring modular 10 is used to continue to monitor the packet loss of the work station that is associated with this WAP (wireless access point); Judge module 20 is used to judge that whether first monitoring modular, the 10 current packet loss that monitor are less than first threshold, if then trigger the radio-frequency emission power that adjusting module 30 reduces this WAP (wireless access point) step by step; Adjusting module 30 is used for adjusting according to the triggering of judge module 20 radio-frequency emission power of this WAP (wireless access point).
Mainly be adopt to increase Beacon Interval, lower radio-frequency emission power or stop the energy consumption that method such as part PA work reduces wireless aps simply in correlation technique, these methods or cause the user to find that network development process is slack-off, or cause radio frequency coverage to diminish making the user can't access network in some position.And the above-mentioned WAP (wireless access point) that the embodiment of the invention provides, adjust the radio-frequency emission power of WAP (wireless access point) according to the packet loss of work station, under the less situation of packet loss, reduce radio-frequency emission power step by step, rather than reduce radio-frequency emission power simply, thereby can be under the impregnable situation of data communication that guarantees between wireless aps and the work station, reduce radio-frequency emission power as much as possible, effectively reduced the whole energy consumption of wireless aps.
Preferably, judge module 20 can also be when packet loss be not less than first threshold, trigger adjusting module 30 and heighten the radio-frequency emission power of WAP (wireless access point) step by step, reach the maximum radio frequency transmitting power of WAP (wireless access point) until the current packet loss that monitors of first monitoring modular 10 less than first threshold or radio-frequency emission power, thus can the further work station and WAP (wireless access point) between data communication normal.
Fig. 2 is that this WAP (wireless access point) can also comprise according to the structural representation of the preferred wireless access point of the embodiment of the invention one: second monitoring modular 40 is used to continue to monitor the received signal intensity of WAP (wireless access point) to work station; Judge module 20 is judging that packet loss is less than first threshold and this received signal intensity during greater than second threshold value, trigger the radio-frequency emission power that adjusting module 30 reduces WAP (wireless access point) step by step, when judging that packet loss is not less than first threshold or received signal intensity and is not more than second threshold value, trigger adjusting module 30 and heighten the radio-frequency emission power of WAP (wireless access point) step by step, until first monitoring modular 10 current monitor packet loss less than first threshold and second monitoring modular, the 40 current received signal intensity that monitor greater than second threshold value, or radio-frequency emission power reaches the maximum radio frequency transmitting power of WAP (wireless access point).Like this, by second threshold value is set, can guarantee that the radio-frequency emission power of WAP (wireless access point) is unlikely to too low, to such an extent as to have influence on other communication qualities of WAP (wireless access point).
In actual applications, the above-mentioned first threshold and second threshold value can be determined by evaluation and test.
In actual applications, the work station that is associated with WAP (wireless access point) may be for a plurality of, then first monitoring modular 10 is used to continue to monitor the packet loss at all working station, second monitoring modular is used to continue to monitor the received signal intensity to all working station, at the packet loss at all working station all less than the packet loss at above-mentioned first threshold or all working station all less than the received signal intensity at above-mentioned first threshold and all working station all under the situation greater than second threshold value, judge module 20 triggers the radio-frequency emission power that adjusting modules 30 reduce WAP (wireless access point) step by step; When the packet loss of a work station is not less than first threshold or received signal intensity and is not more than second threshold value therein, trigger the radio-frequency emission power that adjusting module 30 is heightened WAP (wireless access point) step by step.
Fig. 3 is according to the flow chart of the radio-frequency emission power regulation method of the WAP (wireless access point) of the embodiment of the invention one, mainly may further comprise the steps (step S302-step S308):
Step S302, first monitoring modular, 10 monitorings of WAP (wireless access point) are associated with the current packet loss of work station on it;
For example, first monitoring modular 10 can be by continuing to send message to work station, and the response (for example, ACK) returned of receiving workstation, the quantity of the response that receives in the time by statistical unit and the ratio of the quantity that sends message are determined the packet loss of this work station then.
Whether step S304, judge module 20 judge first monitoring modular, the 10 current packet loss that monitor less than first threshold, if, execution in step S306 then, otherwise, execution in step S308;
For example, first threshold can be evaluated and tested definite in actual applications.
Step S306, judge module 20 trigger adjusting module 30 grade of radio-frequency emission power reduction with WAP (wireless access point), return execution in step S302;
For example, can be according to the maximum radio frequency transmitting power of WAP (wireless access point), radio-frequency emission power is divided into a plurality of grades, difference between each grade can be the same or different, such as, when radio-frequency emission power was big, the difference between each grade can increase, and makes WAP (wireless access point) can adjust to proper radio-frequency emission power fast like this; When radio-frequency emission power is reduced to when smaller, the difference between each grade can be dwindled, like this can be so that the final the most approaching suitable value of using of radio-frequency emission power of WAP (wireless access point).
Step S308 does not adjust the radio-frequency emission power of WAP (wireless access point), returns execution in step S302.
Perhaps, as shown in Figure 4, in step S308, judge module 20 also can trigger adjusting module 30 radio-frequency emission power of WAP (wireless access point) is heightened a grade, return execution in step S302 again, can further guarantee the data communication between WAP (wireless access point) and the work station like this.
Mainly be adopt to increase Beacon Interval, lower radio-frequency emission power or stop the energy consumption that method such as part PA work reduces wireless aps simply in correlation technique, these methods or cause the user to find that network development process is slack-off, or cause radio frequency coverage to diminish making the user can't access network in some position.And in the radio-frequency emission power regulation method of the WAP (wireless access point) that the embodiment of the invention provides, WAP (wireless access point) is adjusted the radio-frequency emission power of WAP (wireless access point) according to the packet loss of work station, under the less situation of packet loss, reduce radio-frequency emission power step by step, rather than reduce radio-frequency emission power simply, thereby can be under the impregnable situation of data communication that guarantees between wireless aps and the work station, reduce radio-frequency emission power as much as possible, effectively reduced the whole energy consumption of wireless aps.
Preferably, in above-mentioned steps S304, at definite packet loss during less than first threshold, judge module 20 can also further judge WAP (wireless access point) to the received signal intensity of this work station whether greater than second threshold value, if, execution in step S306 then, otherwise, execution in step S308 heightens a grade with radio-frequency emission power, and returns step S302.Can avoid the radio-frequency emission power of WAP (wireless access point) to adjust low like this and influence other communication quality of WAP (wireless access point).
Preferably, in step S308, if radio-frequency emission power has reached the maximum radio frequency transmitting power of WAP (wireless access point), then adjusting module 30 is no longer heightened the radio-frequency emission power of WAP (wireless access point), directly returns execution in step S302.
In actual applications, the work station that is associated with WAP (wireless access point) can be for a plurality of, in this case, in said method, WAP (wireless access point) determines that received signal intensity to each work station is all greater than second threshold value, and the packet loss of each work station is during all less than first threshold, carry out the operation that reduces radio-frequency emission power, when the packet loss that definite received signal intensity to one of each work station is not more than one of second threshold value or each work station is not less than first threshold, carry out the operation of heightening described radio-frequency emission power.Perhaps, if do not consider received signal intensity, then at the packet loss that satisfies each work station all under the situation less than first threshold, WAP (wireless access point) is carried out the operation that reduces radio-frequency emission power, packet loss at one of each work station is not less than under the situation of first threshold, and WAP (wireless access point) is carried out the operation of heightening radio-frequency emission power.Can guarantee that like this each work station can both normally communicate by letter with WAP (wireless access point).
In said method, the packet loss of each work station can be confirmed by the ACK that wireless aps sends work station response after the message, if do not have ACK then think packet loss has taken place, can determine packet loss by the packet loss quantity of statistical unit in the time and the quantity that sends message.
Embodiment two
Fig. 5 is the application scenarios schematic diagram according to the embodiment of the invention two, in the present embodiment, the work station related with WAP (wireless access point) (STA) has only one, when STA 1 moves to position 2 from the position, when moving to position 3 again, when STA to wireless aps near the time, wireless aps is according to the packet loss situation of received signal intensity and statistics, reduces radio-frequency emission power.As STA during away from wireless aps, wireless aps monitors received signal intensity variation, and the statistics packet loss increases and surpassed threshold value, then heightens radio-frequency emission power, replys normally up to packet loss, or enters the full power state.
Fig. 6 is according to the flow chart of the radio-frequency emission power regulation method of the wireless aps of the embodiment of the invention two, mainly may further comprise the steps:
Step S601, the wireless aps startup enters the full power running status, and promptly the current radio-frequency emission power of wireless aps is its maximum radio frequency transmitting power;
Step S602, a STA is associated with on the wireless aps, the packet loss between wireless aps statistics and this STA, and obtain current received signal intensity to this STA;
Step S603, whether wireless aps judges packet loss less than first threshold, if, execution in step S604 then, otherwise, execution in step S605;
Step S604, whether wireless aps judges received signal intensity greater than second threshold value, judges promptly whether received signal intensity improves or fine, if, execution in step S606 then, otherwise, execution in step S605;
Step S605, wireless aps is heightened a grade with radio-frequency emission power, returns step S602;
If current radio-frequency emission power is the maximum radio frequency transmitting power, then do not heighten current radio-frequency emission power, directly return step S602;
Step S606, the wireless aps radio-frequency emission power that it is current reduces a grade, returns step S602.
In above-mentioned flow process, after step S605 heightens power, monitor the packet loss in the communication process once more, normal condition before if the packet loss of STA all returns to, then stop to heighten transmitting power, if the received signal signal strength signal intensity does not change and packet loss is all normal, then can be stabilized in current radio-frequency emission power.
Pass through the embodiment of the invention, under the situation of the only related STA of WAP (wireless access point), can according to and this STA between packet loss and the received signal intensity of this STA is adjusted the radio-frequency emission power of WAP (wireless access point), thereby can under the situation that does not influence user experience, effectively reduce the energy consumption of WAP (wireless access point).
Embodiment three
Fig. 7 is the application scenarios schematic diagram according to the embodiment of the invention two, and in the present embodiment, the STA related with WAP (wireless access point) comprises: STA1, STA2 and STA3.
Fig. 8 is according to the flow chart of the radio-frequency emission power regulation method of the wireless aps of the embodiment of the invention three, mainly may further comprise the steps:
Step S801, the wireless aps startup enters the full power running status, and promptly the current radio-frequency emission power of wireless aps is its maximum radio frequency transmitting power;
Step S802, STA1, STA2 and STA3 are associated with on the wireless aps, the packet loss between wireless aps statistics and each STA, and obtain current received signal intensity to each STA;
Step S803, wireless aps judge and each STA between packet loss whether all less than first threshold, if, execution in step S804 then, otherwise, execution in step S805;
Step S804, whether wireless aps judges received signal intensity to each STA all greater than first threshold, if, execution in step S806 then, otherwise, execution in step S805;
Step S805, wireless aps is heightened a grade with radio-frequency emission power, returns step S802;
If current radio-frequency emission power is the maximum radio frequency transmitting power, then do not heighten current radio-frequency emission power, directly return step S802;
Step S806, the wireless aps radio-frequency emission power that it is current reduces a grade, returns step S802.
In above-mentioned flow process, after step S805 heightens power, monitor the packet loss of each STA in the communication process once more, normal condition before if the packet loss of each STA all returns to, then stop to heighten transmitting power, if the received signal signal strength signal intensity to each STA is all normal less than variation and packet loss, then can be stabilized in current radio-frequency emission power.
Pass through the embodiment of the invention, under the situation of the related a plurality of STA of WAP (wireless access point), can according to and each STA between packet loss and the received signal intensity of each STA is adjusted the radio-frequency emission power of WAP (wireless access point), thereby can under the situation that does not influence user experience, effectively reduce the energy consumption of WAP (wireless access point).
From above description, as can be seen, in embodiments of the present invention, WAP (wireless access point) can according to and STA between packet loss and the received signal intensity of STA adjusted the radio-frequency emission power of self automatically, thereby can under the situation that does not influence user experience, reduce the energy consumption of WAP (wireless access point).
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the radio-frequency emission power regulation method of a WAP (wireless access point) is characterized in that, comprising:
WAP (wireless access point) continues to monitor the packet loss that is associated with the work station on it;
Under the situation of described packet loss less than first threshold, described WAP (wireless access point) reduces the radio-frequency emission power of described WAP (wireless access point) step by step.
2. method according to claim 1 is characterized in that, described method also comprises:
Described WAP (wireless access point) determines that the current described packet loss that monitors is more than or equal to described first threshold;
Described WAP (wireless access point) is heightened described radio-frequency emission power step by step, reaches the maximum radio frequency transmitting power of described WAP (wireless access point) less than described first threshold or described radio-frequency emission power until the current described packet loss that monitors.
3. method according to claim 1 and 2 is characterized in that, described WAP (wireless access point) is each reduce described radio-frequency emission power before, described method also comprises: described WAP (wireless access point) determines that received signal intensity to described work station is greater than second threshold value.
4. method according to claim 3, it is characterized in that, if described WAP (wireless access point) is determined the received signal intensity of described work station is less than or equal to described second threshold value, described method also comprises: described WAP (wireless access point) is heightened described radio-frequency emission power step by step, reaches the maximum radio frequency transmitting power of described WAP (wireless access point) less than described first threshold or described radio-frequency emission power greater than described second threshold value and described packet loss until described received signal intensity.
5. method according to claim 4 is characterized in that, the work station that is associated with described WAP (wireless access point) is a plurality of; Described WAP (wireless access point) determines that received signal intensity to each described work station is all greater than described second threshold value, and the packet loss of each described work station is during all less than described first threshold, carry out the operation that reduces described radio-frequency emission power, when the packet loss that definite received signal intensity to one of each described work station is not more than one of described second threshold value or each described work station is not less than described first threshold, carry out the operation of heightening described radio-frequency emission power.
6. method according to claim 1 and 2 is characterized in that, the work station that is associated with described WAP (wireless access point) is a plurality of; At the packet loss that satisfies each described work station all under the situation less than described first threshold, described WAP (wireless access point) is carried out the operation that reduces described radio-frequency emission power, packet loss at one of each described work station is not less than under the situation of described first threshold, and described WAP (wireless access point) is carried out the operation of heightening described radio-frequency emission power.
7. method according to claim 1 and 2 is characterized in that, the packet loss that described WAP (wireless access point) is monitored described work station comprises:
Described WAP (wireless access point) sends message to described work station;
Described WAP (wireless access point) receives the response that described work station returns;
Described WAP (wireless access point) sends the quantity of message and determines described packet loss with the quantity of the response that receives in the time by statistical unit.
8. a WAP (wireless access point) is characterized in that, comprising:
First monitoring modular is used to continue to monitor the packet loss of the work station that is associated with described WAP (wireless access point);
Judge module is used to judge that whether the current described packet loss that monitors of described first monitoring modular is less than first threshold, if then trigger the radio-frequency emission power that adjusting module reduces described WAP (wireless access point) step by step;
Described adjusting module is used for adjusting according to the triggering of described judge module the radio-frequency emission power of described WAP (wireless access point).
9. WAP (wireless access point) according to claim 8 is characterized in that, described judge module also is used for triggering the radio-frequency emission power that described adjusting module is heightened described WAP (wireless access point) step by step when described packet loss is not less than described first threshold.
10. according to Claim 8 or 9 described WAP (wireless access point), it is characterized in that, also comprise:
Second monitoring modular is used to continue to monitor the received signal intensity of described WAP (wireless access point) to described work station;
Described judge module is judging that described packet loss is less than described first threshold and described received signal intensity during greater than second threshold value, trigger the radio-frequency emission power that described adjusting module reduces described WAP (wireless access point) step by step, when judging that described packet loss is not less than described first threshold or described received signal intensity and is not more than second threshold value, trigger the radio-frequency emission power that described adjusting module is heightened described WAP (wireless access point) step by step.
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