CN101868009A - Wireless access point (AP) and AP energy saving method - Google Patents
Wireless access point (AP) and AP energy saving method Download PDFInfo
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- CN101868009A CN101868009A CN201010199097A CN201010199097A CN101868009A CN 101868009 A CN101868009 A CN 101868009A CN 201010199097 A CN201010199097 A CN 201010199097A CN 201010199097 A CN201010199097 A CN 201010199097A CN 101868009 A CN101868009 A CN 101868009A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a wireless access point (AP) and an AP energy saving method. The method comprises the following steps that: when the AP detects that the AP is not associated with a Station and the duration of not receiving a detection message or an associative message reaches a time threshold value, the AP increases a Beacon interval and transmits a Beacon message according to the increased Beacon interval; and when the AP receives the detection message or the associative message transmitted by a Station, the AP adjusts the Beacon interval to a set value and transmits the Beacon message according to the set value. The invention reduces the power consumption of the AP and realizes the energy saving of the AP.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of wireless access point AP and AP method for saving energy.
Background technology
WLAN (Wireless Local Area Network, WLAN (wireless local area network)) refers to that the employing wireless communication technology is interconnected with computer equipment, the client can insert the Internet and enterprise network whenever and wherever possible with WLAN by terminals such as notebook computers, obtain information, amusement or handle official business, WLAN has obtained application and development more and more widely.But the power consumption of a wireless network card is 12 times of a traditional ethernet card power consumption.Therefore,, improve the flying power of mobile wireless device batteries such as notebook, stipulated a series of conservation measuress at wireless mobile Station agreement in order to reduce the power consumption of wireless Station (work station).Yet, because AP (Access Point, access point) often adopts electric supply or the power supply of POE (Power OverEthernet, Power over Ethernet) power supply not to adopt powered battery, the energy-conservation of AP do not obtain due attention, and in fact the power consumption of AP will be far above the power of wireless network card.
But, also do not provide a kind of in the prior art and can be used for the AP method for saving energy.
Summary of the invention
The invention provides a kind of wireless access point AP and wireless access point AP method for saving energy, to realize reducing the power consumption of AP, realization AP's is energy-conservation.
The invention provides a kind of wireless access point AP method for saving energy, described AP sends the existence that the Beacon message is declared wireless network at interval according to the indication Beacon that sets, and this method comprises:
When the time that described AP detects self no Station association and continues not receive probe messages or related message reached time threshold, described AP increased described Beacon at interval, sends the Beacon message at interval according to the Beacon after the described increase;
When described AP received probe messages that Station sends or related message, described AP was intervally adjusted to set point with described Beacon, sends the Beacon message according to described set point.
Described AP increases described Beacon and comprises at interval:
Described AP directly adjusts to Beacon max-thresholds at interval at interval with described Beacon; Perhaps
Described AP increases described Beacon at interval according to default step-length.
Directly adjust to Beacon at interval at interval after the max-thresholds at described Beacon, described AP stops to detect self no Station association and continues not receive the time of probe messages or related message;
Described AP increase according to default step-length described Beacon at interval before, the more current Beacon of described AP at interval with default step-length and whether greater than Beacon max-thresholds at interval; When described current Beacon at interval with default step-length and greater than Beacon at interval during max-thresholds, described AP stops to adjust Beacon at interval, current Beacon at interval with default step-length and more than or equal to Beacon at interval during max-thresholds, the time that stops to detect self no Station association and do not receive probe messages or related message.
Described AP increases after the described Beacon interval according to default step-length, also comprises:
Described AP obtain with described increase after Beacon time corresponding threshold value at interval, whether the time of detecting self no Station association and continuing not receive probe messages or related message reaches the Beacon time corresponding threshold value at interval after the described increase, when reaching, described AP increases described Beacon at interval.
A kind of wireless access point AP is applied to WLAN (wireless local area network), and described AP sends the existence that indication Beacon message is declared wireless network at interval according to the Beacon that sets, and this AP comprises:
Timing unit, the time that is used to add up the no Station association of described AP self and continues not receive probe messages or related message;
Receiving element is used to receive probe messages or the related message that Station sends;
Adjustment unit is connected with receiving element with described timing unit, is used for increasing described Beacon at interval when the time value of described timing unit statistics reaches time threshold; Receive the probe messages or related message of Station transmission when described receiving element after, described Beacon is intervally adjusted to set point;
Transmitting element is used for sending the Beacon message at interval according to Beacon.
Described adjustment unit also is used for:
Described Beacon is directly adjusted to Beacon max-thresholds at interval at interval.
Described timing unit also is used for:
After described Beacon directly adjusts to Beacon interval max-thresholds at interval, stop to add up the time that described AP does not have the Station association and continues not receive probe messages or related message.
Described adjustment unit also is used for:
Increase described Beacon at interval according to default step-length.
Also comprise comparing unit, be connected with described adjustment unit, be used for described adjustment unit increase according to default step-length described Beacon at interval before, more current Beacon at interval with default step-length and whether greater than Beacon interval max-thresholds;
Described adjustment unit also is connected with described comparing unit, be used for comparative result at described comparing unit and be current Beacon at interval with default step-length and at interval during max-thresholds, do not adjust described Beacon at interval greater than Beacon;
Described timing unit also is connected with described comparing unit, be used for comparative result when described comparing unit and be current Beacon at interval with default step-length and be greater than or equal to Beacon at interval during max-thresholds, stop to add up the time that described AP does not have the Station association and continues not receive probe messages or related message.
Also comprise:
Acquiring unit is connected with described adjustment unit, be used for described adjustment unit increase according to default step-length described Beacon at interval after, obtain with described increase after Beacon time corresponding threshold value at interval;
Described timing unit also is used for: whether the time that adding up described AP does not have the Station association and continue not receive probe messages or related message reaches the Beacon time corresponding threshold value at interval after the described increase.
Compared with prior art, the present invention has the following advantages at least:
Among the present invention, when the time that AP continues no Station association and continues not receive probe messages or related message reaches time threshold, AP increases Beacon and sends the Beacon message at interval at interval and according to the Beacon after increasing, thereby reduce the transmission frequency of Beacon message, reduce the power consumption of AP.
Description of drawings
Fig. 1 is an AP method for saving energy schematic flow sheet provided by the invention;
Fig. 2 is the adjustment schematic diagram of Beacon transmit status in the AP method for saving energy provided by the invention;
Fig. 3 is the structural representation of wireless access point AP provided by the invention.
Embodiment
The operative scenario of AP comprises and has the Station association and do not have Station related.When existing Station related on the AP, AP need finish a series of tasks such as message forwarding, packet buffer, clock synchronization.When not having Station related on AP, AP needs regularly to send Beacon (guide) message to the external world, declares the existence of wireless network, makes things convenient for the user to insert.The transmission of Beacon message abbreviates Beacon as at interval at interval, and it is worth within the specific limits that the user can join, for example the Beacon of certain AP at interval minimum be 32ms, be 8191ms to the maximum.Beacon at interval can not be too little, if increasing the weight of the burden of system, too little meeting takies a large amount of extra channel resources, can not be too big, if too conference influences the data pack buffer operation of AP to related dormancy Station, generally Beacon interval default value is set at 100ms.
At above-mentioned situation, the invention provides a kind of AP method for saving energy, when not having Station to be associated with AP, there is not the task of the normal operation of the related Station of maintenance in the Beacon message, only there is the effect of declaring wireless network existence and network parameter, be intervally adjusted to maximum to reduce quantity that Beacon send with Beacon this moment, and detecting that Station initiates to survey or again Beacon is being returned to set point at interval when operation associated in the AP coverage, thus the power consumption of reduction AP.As shown in Figure 1, this method comprises:
Step 101, when the time that described AP detects no Station association and continues not receive probe messages or related message reached time threshold, described AP increased described Beacon at interval, sends the Beacon message at interval according to the Beacon after the described increase;
Step 102, when described AP received probe messages that Station sends or related message, described AP was intervally adjusted to set point with described Beacon, sends the Beacon message according to described set point.
The invention provides a kind of AP method for saving energy, the transmit status of the Beacon message of AP is divided into normal condition and power save mode.Normal condition is meant that AP sends the state of Beacon message at interval according to default value Beacon, power save mode be meant AP according to pre-configured peaked Beacon at interval (being Beacon max-thresholds at interval) send the state of Beacon message, this pre-configured maximum can be the Beacon of pre-configured as required value of user or WLAN agreement regulation maximum or the Beacon maximum at interval that is provided with of the producer of AP at interval.AP is in normal condition when existing Station related on the AP, when the time that continues there is not the Station association on the AP and continue not receive probe messages or related message reached default maximum time (being the time threshold value), AP was adjusted into power save mode with the state of Beacon message; When AP is follow-up when receiving Probe request (probe requests thereby) message of Station or Association (association) message, AP is adjusted into normal condition with the state of Beacon message.
In the AP method for saving energy provided by the invention, AP can directly be adjusted the state of Beacon message or be adjusted gradually by the process that normal condition is adjusted into power save mode, the latter promptly adjusts Beacon at interval according to default step-length, be in course of adjustment if AP receives Probe request message or the Association message of Station, then immediately the state of Beacon message be adjusted into normal condition.For preceding a kind of mode, directly adjust at interval Beacon at interval after the max-thresholds at Beacon, AP stops to detect self no Station association and continues not receive the time of probe messages or related message.For a kind of mode in back, AP increase according to default step-length Beacon at interval before, the more current Beacon of AP at interval with default step-length and whether greater than Beacon max-thresholds at interval; If current Beacon at interval with default step-length and greater than Beacon max-thresholds at interval, AP stops to adjust Beacon at interval, if current Beacon at interval with default step-length and be greater than or equal to Beacon max-thresholds at interval, the time that AP stops to detect self no Station association and do not receive probe messages or related message.For a kind of mode in back, AP can also be provided with the corresponding identical or different at interval time threshold of different Beacon, if it is different, then after increasing the Beacon interval, AP also obtain with increase after Beacon time corresponding threshold value at interval, if the time that AP does not have the Station association and continues not receive probe messages or related message reaches the Beacon time corresponding threshold value at interval after this increases, AP increase Beacon interval.
In addition, in the AP method for saving energy provided by the invention, the Beacon transmit status of AP also can be divided into three kinds: normal condition, transition state and power save mode.Normal condition is meant that AP sends the state of Beacon message at interval according to default value Beacon, transition state is meant that AP progressively strengthens the state that Beacon sends the Beacon message at interval, and power save mode is meant that AP sends the state of Beacon message according to Beacon interval maximum.AP is in normal condition when existing Station related on the AP, AP begins to enter transition state when the time that continues not have the Station association on the AP reaches default maximum time, AP enters power save mode allow to strengthen Beacon at interval under the prerequisite gradually at interval until reaching the maximum that Beacon allows at interval smaller or equal to maximum Beacon after the Beacon of AP reaches maximum at interval in transition state.
More than three kinds of states in AP system running, can carry out state transition, the state transition process as shown in Figure 2:
A: power save mode is to normal condition, and trigger condition is Probe request message or the Association message that AP receives Station;
B: normal condition is to transition state, and trigger condition is: AP does not have the Station association and continues not receive that the time of probe messages or related message reaches maximum duration;
C: transition state is to normal condition, and trigger condition is the same with transition condition from the power save mode to the normal condition;
D: transition state is to power save mode, and trigger condition is the maximum that AP expands Beacon to configuration at interval.
The invention provides a kind of wireless access point AP, be applied to WLAN (wireless local area network), described AP sends the existence that indication Beacon message is declared wireless network at interval according to the Beacon that sets, and as shown in Figure 3, this AP comprises:
Receiving element 12 is used to receive probe messages or the related message that Station sends;
Transmitting element 14 is used for sending the Beacon message at interval according to Beacon.
Described adjustment unit 13 increases described Beacon and is specially at interval: described Beacon is directly adjusted to Beacon max-thresholds at interval at interval.Accordingly, described timing unit 11 also is used for stopping to add up the time that described AP does not have the Station association and continues not receive probe messages or related message after described Beacon directly adjusts to Beacon interval max-thresholds at interval.
Described adjustment unit 13 increase described Beacon at interval specifically can also for: increase described Beacon interval according to default step-length.Accordingly, described AP also comprises comparing unit 15, be connected with described adjustment unit 13, be used for described adjustment unit 13 increase according to default step-length described Beacon at interval before, more current Beacon at interval with default step-length and whether greater than Beacon interval max-thresholds; Described adjustment unit 13 also be used for comparative result at described comparing unit 15 be current Beacon at interval with default step-length and at interval during max-thresholds, do not adjust described Beacon at interval greater than Beacon; Described timing unit 11 also is connected with described comparing unit 15, be used for comparative result when described comparing unit 15 and be current Beacon at interval with default step-length and be greater than or equal to Beacon at interval during max-thresholds, stop to add up the time that described AP does not have the Station association and continues not receive probe messages or related message.
Described AP also comprises acquiring unit 16, is connected with described adjustment unit 13, be used for described adjustment unit 13 increase according to default step-length described Beacon at interval after, obtain with described increase after Beacon time corresponding threshold value at interval; Whether the time that described timing unit 16 also is used to add up described AP not to be had the Station association and continue not receive probe messages or related message reaches the Beacon time corresponding threshold value at interval after the described increase.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (10)
1. wireless access point AP method for saving energy, described AP sends the existence that the Beacon message is declared wireless network at interval according to the indication Beacon that sets, and it is characterized in that this method comprises:
When the time that described AP detects self no Station association and continues not receive probe messages or related message reached time threshold, described AP increased described Beacon at interval, sends the Beacon message at interval according to the Beacon after the described increase;
When described AP received probe messages that Station sends or related message, described AP was intervally adjusted to set point with described Beacon, sends the Beacon message according to described set point.
2. the method for claim 1 is characterized in that, described AP increases described Beacon and comprises at interval:
Described AP directly adjusts to Beacon max-thresholds at interval at interval with described Beacon; Perhaps
Described AP increases described Beacon at interval according to default step-length.
3. method as claimed in claim 2 is characterized in that,
Directly adjust to Beacon at interval at interval after the max-thresholds at described Beacon, described AP stops to detect self no Station association and continues not receive the time of probe messages or related message;
Described AP increase according to default step-length described Beacon at interval before, the more current Beacon of described AP at interval with default step-length and whether greater than Beacon max-thresholds at interval; When described current Beacon at interval with default step-length and greater than Beacon at interval during max-thresholds, described AP stops to adjust Beacon at interval, current Beacon at interval with default step-length and more than or equal to Beacon at interval during max-thresholds, the time that stops to detect self no Station association and do not receive probe messages or related message.
4. method as claimed in claim 2 is characterized in that, described AP increases after the described Beacon interval according to default step-length, also comprises:
Described AP obtain with described increase after Beacon time corresponding threshold value at interval, whether the time of detecting self no Station association and continuing not receive probe messages or related message reaches the Beacon time corresponding threshold value at interval after the described increase, when reaching, described AP increases described Beacon at interval.
5. a wireless access point AP is applied to WLAN (wireless local area network), and described AP sends the existence that indication Beacon message is declared wireless network at interval according to the Beacon that sets, and it is characterized in that this AP comprises:
Timing unit, the time that is used to add up the no Station association of described AP self and continues not receive probe messages or related message;
Receiving element is used to receive probe messages or the related message that Station sends;
Adjustment unit is connected with receiving element with described timing unit, is used for increasing described Beacon at interval when the time value of described timing unit statistics reaches time threshold; Receive the probe messages or related message of Station transmission when described receiving element after, described Beacon is intervally adjusted to set point;
Transmitting element is used for sending the Beacon message at interval according to Beacon.
6. AP as claimed in claim 5 is characterized in that, described adjustment unit also is used for:
Described Beacon is directly adjusted to Beacon max-thresholds at interval at interval.
7. AP as claimed in claim 6 is characterized in that, described timing unit also is used for:
After described Beacon directly adjusts to Beacon interval max-thresholds at interval, stop to add up the time that described AP does not have the Station association and continues not receive probe messages or related message.
8. AP as claimed in claim 5 is characterized in that, described adjustment unit also is used for:
Increase described Beacon at interval according to default step-length.
9. AP as claimed in claim 8, it is characterized in that, also comprise comparing unit, be connected with described adjustment unit, be used for described adjustment unit increase according to default step-length described Beacon at interval before, more current Beacon at interval with default step-length and whether greater than Beacon interval max-thresholds;
Described adjustment unit also be used for comparative result at described comparing unit be current Beacon at interval with default step-length and at interval during max-thresholds, do not adjust described Beacon at interval greater than Beacon;
Described timing unit also is connected with described comparing unit, be used for comparative result when described comparing unit and be current Beacon at interval with default step-length and be greater than or equal to Beacon at interval during max-thresholds, stop to add up the time that described AP does not have the Station association and continues not receive probe messages or related message.
10. AP as claimed in claim 8 is characterized in that, also comprises:
Acquiring unit is connected with described adjustment unit, be used for described adjustment unit increase according to default step-length described Beacon at interval after, obtain with described increase after Beacon time corresponding threshold value at interval;
Described timing unit also is used for: whether the time that adding up described AP does not have the Station association and continue not receive probe messages or related message reaches the Beacon time corresponding threshold value at interval after the described increase.
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