CN108024277A - Method, control device and the wireless access point of Regulate signal decay - Google Patents
Method, control device and the wireless access point of Regulate signal decay Download PDFInfo
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- CN108024277A CN108024277A CN201711319231.9A CN201711319231A CN108024277A CN 108024277 A CN108024277 A CN 108024277A CN 201711319231 A CN201711319231 A CN 201711319231A CN 108024277 A CN108024277 A CN 108024277A
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Abstract
The embodiment of the present application provides a kind of method, control device and the wireless access point of Regulate signal decay, the described method includes：After reaching in this cycle, the signal strength for the first signal for being received on the working channel of the AP by the radio-frequency front-end of the AP but being decayed without digital pad is obtained；Preset data rate and receiving sensitivity index mapping relations are searched, to obtain receiving sensitivity indexs of the AP under current data rate；According to the difference of the receiving sensitivity index of the signal strength and the AP of first signal under current data rate, the signal intensity attenuation amount that this cycle allows is determined；The signal intensity attenuation amount allowed according to described cycle resets the pad value of the digital pad.In the embodiment of the present application, it can be achieved that the real-time adjustment of AP receiving sensitivities, weakens annoyance level of the neighboring trace/time neighboring trace to current operating channel, antijamming capabilities of the lifting AP under closely covering scene.
Description
Technical field
This application involves network communication technology field, more particularly to a kind of method of Regulate signal decay, control device and
Wireless access point.
Background technology
With the development of Wireless LAN (Wireless Local Area Networks, WLAN) business, wirelessly connect
The deployment dense degree of access point (AccessPoint, AP) is higher and higher, and the signal interference problem brought is also serious all the more.
In the higher scene of AP deployment dense degree, two neighboring AP is typically provided at different working channels, example
Such as, AP1 is set to be operated in 1 channel, AP2 is operated in 6 channels or 11 channels, to avoid the co-channel interference between adjacent AP.This
Kind deployment way can effectively solve problem of co-channel interference, but there are adjacent frequency interference problem, i.e., when side channel or secondary adjacent letter
When the signal strength in road is excessive, AP can also be interfered.
In this regard, existing settling mode is：Control the low-noise amplifier (Low Noise Amplifier, LNA) in AP
Bypass (bypass) state is operated in reduce link gain, so as to achieve the purpose that to suppress adjacent frequency interference.But because AP
The signal that antenna receives is often weaker, and link gain when LNA is operated in bypass states is relatively low, it is likely that cause because
Signal is too weak and the problem of can not demodulating.
The content of the invention
The many aspects of the application provide a kind of method, control device and the wireless access point of Regulate signal decay, with reality
The adjustment of existing AP receiving sensitivities, weakens annoyance level of the neighboring trace/time neighboring trace to current operating channel, AP is in low coverage for lifting
From the antijamming capability under covering scene.
The embodiment of the present application provides a kind of method of Regulate signal decay, suitable for wireless access point AP, the method bag
Include：
After reaching in this cycle, obtain and received but without number on the working channel of the AP by the radio-frequency front-end of the AP
The signal strength for the first signal that word attenuator is decayed；
Preset data rate and receiving sensitivity index mapping relations are searched, to obtain the AP in current data rate
Under receiving sensitivity index；
According to the receiving sensitivity index of the signal strength and the AP of first signal under current data rate
Difference, determines the signal intensity attenuation amount of this cycle permission；
The signal intensity attenuation amount allowed according to described cycle resets the pad value of the digital pad, for
The digital pad connects on the working channel radio-frequency front-end according to the pad value reset within this cycle
Received follow-up signal is decayed.
The embodiment of the present application also provides a kind of wireless access point AP, including：Sequentially connected radio-frequency front-end, Ethernet processing
Chip and processor；The radio-frequency front-end includes reception antenna and digital pad；The processor and the digital pad
Connection；
The processor, for after this cycle reaches, obtaining by the reception antenna on the working channel of the AP
The signal strength for the first signal for receiving but decaying without the digital pad；
Preset data rate and receiving sensitivity index mapping relations are searched, to obtain the AP in current data rate
Under receiving sensitivity index；
According to the receiving sensitivity index of the signal strength and the AP of first signal under current data rate
Difference, determines the signal intensity attenuation amount of this cycle permission；
The signal intensity attenuation amount allowed according to described cycle resets the pad value of the digital pad；
The digital pad, within this cycle according to the pad value reset to the reception antenna described
The follow-up signal received on working channel is decayed；
The ethernet processing chip, for the follow-up signal after decaying according to Ethernet protocol to the digital pad
Handled.
The embodiment of the present application also provides a kind of control device, including：Memory and processor；
The memory, is stored with one or more programmed instruction；
The processor, coupled to the memory, for performing one or more programmed instruction, for：
After this cycle reaches, obtain and received but without number on the working channel of the AP by the radio-frequency front-end of the AP
The signal strength for the first signal that word attenuator is decayed；
Preset data rate and receiving sensitivity index mapping relations are searched, to obtain the AP in current data rate
Under receiving sensitivity index；
According to the difference of the receiving sensitivity index of the signal strength and the AP of first signal under current data speed
Value, determines the signal intensity attenuation amount of this cycle permission；
The signal intensity attenuation amount allowed according to described cycle resets the pad value of the digital pad, for
The digital pad connects on the working channel radio-frequency front-end according to the pad value reset within this cycle
Received follow-up signal is decayed.
In the embodiment of the present application, AP radio-frequency front-end increase digital pad, with reference on AP working channels without declining
Receiving sensitivity index of the signal strength and AP subtracted under current data rate rationally controls the pad value of digital pad, real
The real-time adjustment of existing AP receiving sensitivities, weakens annoyance level of the neighboring trace/time neighboring trace to current operating channel, AP is in low coverage for lifting
From the antijamming capability under covering scene.
Brief description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, forms the part of the application, this Shen
Schematic description and description please is used to explain the application, does not form the improper restriction to the application.In the accompanying drawings：
Fig. 1 is a kind of structure diagram for AP that one embodiment of the application provides；
Fig. 2 is a kind of structure diagram for AP that another embodiment of the application provides；
Fig. 3 is a kind of structure diagram for AP that the another embodiment of the application provides；
Fig. 4 is a kind of flow diagram of the method for Regulate signal decay that one embodiment of the application provides；
Fig. 5 is a kind of flow diagram of the method for Regulate signal decay that another embodiment of the application provides；
Fig. 6 is the flow diagram of the method for another Regulate signal decay provided by the embodiments of the present application；
Fig. 7 is a kind of structure diagram of control device provided by the embodiments of the present application；
Fig. 8 is the limitation of the corresponding spectrum mask of HT20 patterns under 802.11 agreements.
Embodiment
To make the purpose, technical scheme and advantage of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Go out all other embodiments obtained under the premise of creative work, shall fall in the protection scope of this application.
In the prior art, the low-noise amplifier LNA in AP is controlled to be operated in bypass (bypass) state to reduce chain
Road gain, to achieve the purpose that suppression adjacent frequency/time adjacent frequency is disturbed.But link when bypass states are operated in due to LNA is increased
Benefit is relatively low, and the intensity for receiving signal is weaker, may cause because signal is too weak and the problem of can not demodulate.For the technology
Problem, the embodiment of the present application provide a solution, and cardinal principle is：Increase digital pad, knot in the radio-frequency front-end of AP
The receiving sensitivity index of signal strength and AP without decay under current data rate on AP working channels is closed rationally to control
The pad value of digital pad, realizes the real-time adjustment of AP receiving sensitivities, weakens neighboring trace/time neighboring trace to current operating channel
Annoyance level, antijamming capabilities of the lifting AP under closely covering scene.
Below in conjunction with attached drawing, the technical solution that each embodiment of the application provides is described in detail.
Fig. 1 is a kind of structure diagram for AP that one embodiment of the application provides.As shown in Figure 1, the AP mainly includes：According to
Radio-frequency front-end 100, ethernet processing chip 101 and the processor 102 of secondary connection；Radio-frequency front-end includes 103 sum number of reception antenna
Word attenuator 104.
As shown in Figure 1, the present embodiment adds digital pad 104 in traditional AP, digital pad 104 is used for basis
The pad value received decays link signal, and specially reception antenna 103 is received on the working channel of AP
Radiofrequency signal decays.It should be noted that the radiofrequency signal that reception antenna 103 receives on the working channel of AP includes AP
Working channel on working signal, it is also possible to the neighboring trace of the working channel including AP and/or secondary neighboring trace produce working channel
Interference signal.
For example, when the working channel of AP is 1 channel, reception antenna 103 can receive radiofrequency signal on 1 channel, receive day
The working signal of 1 channel is included in the radiofrequency signal that line 103 receives, it is also possible to the neighboring trace comprising 1 channel and/or secondary neighboring trace pair
The interference signal that 1 channel produces.Digital pad 104 will receive reception antenna 103 on 1 channel working signal and dry
Disturb signal and perform signal attenuation operation at the same time.
Ethernet processing chip 101 is connected with digital pad 104, and ethernet processing chip 101 is used for according to Ethernet
Radiofrequency signal after agreement decays digital pad 104 is handled, such as demodulation, the intensity of extraction signal, statistics packet loss
Rate etc..Alternatively, ethernet processing chip 101 can be MAC chips.
As shown in Figure 1, processor 102 is connected with ethernet processing chip 101 and digital pad 104, processor 102 is
The control mechanism of AP, the intelligent control process inside AP are mainly realized by processor 102.In the present embodiment, processor 102 is led
The signal strength to be extracted according to ethernet processing chip 101, is adjusted flexibly the pad value of digital pad 104, so as to control
The radiofrequency signal that digital pad 104 processed receives reception antenna 103 on the working channel of AP decays.
Due to the WLAN environment real-time changes belonging to AP, if setting the pad value of digital pad 104 according to fixed value,
The WLAN environment of real-time change possibly can not be applicable in, and therefore, in the present embodiment, AP will periodically carry out Regulate signal decay
Operation, a stand-by period can be set between each cycle, and after the stand-by period reaches, AP is by the adjusting of automated execution next cycle
The operation of signal attenuation.The present embodiment will be described in detail by taking one of them cycle as an example below.
In the present embodiment, AP periodically carries out the operation of Regulate signal decay mainly by the periodicity of processor 102
Ground adjust digital pad 104 pad value so that control digital pad 104 different cycles with differential declines value to receive
The process that the radiofrequency signal that antenna 103 receives on the working channel of AP decays.Wherein, processor 102 is periodically adjusted
The process of the pad value of whole digital pad 104 includes：
After this cycle reaches, obtain and received but without digital pad on the working channel of AP by reception antenna 103
The signal strength of 104 the first signals decayed；Preset data rate and receiving sensitivity index mapping relations are searched, with
Obtain receiving sensitivity indexs of the AP under current data rate；According to the signal strength of the first signal and AP in current data speed
The difference of receiving sensitivity index under rate, determines the signal intensity attenuation amount of this cycle permission；The letter allowed according to this cycle
Number strength retrogression amount resets the pad value of digital pad 104.
In the present embodiment, in each cycle, processor 102 will again according on AP working channels without digital pad
The signal strength of 104 working signals decayed resets pad value of the digital pad 104 within the new cycle.It is based on
This, after reaching in this cycle, processor 102 will obtain the first signal that is received on the working channel of AP of reception antenna 103
Signal strength.First signal is primarily referred to as the working signal on the working channel of AP, that is, with the associated terminals of AP
The signal of (Station, STA), can be that the signal of received STA is inscribed in a bit of time after being reached in this cycle.
Alternatively, the signal strength of the first signal can indicate (RSSI) according to the intensity of the reception signal of reception antenna 103
Value determines.Alternatively, the relation of RSSI value and signal strength can be PSTA=RSSI-95, but not limited to this.PSTARepresent first
The signal strength of signal.Processor 102 can read RSSI values of the associated STA under working channel first；Then, according to
RSSI values of the associated STA under working channel, determines the signal strength of each STA；Afterwards, it is strong according to the signal of each STA
Degree, calculates the signal strength of the first signal.
When being 1 with the number of the associated STA of AP, the signal strength of the first signal is this STA pair that processor 102 obtains
The signal strength answered.
When with the associated STA of AP for it is multiple when, the signal strength of the first signal all having associated for what processor 102 obtained
STA signal strength average value, or for processor 102 obtain all associated STA signal strength in most
Big signal strength.
For example, when being n with the associated STA of AP, the signal strength of the first signal of the acquisition of processor 102 is
After the signal strength of the first signal is obtained, processor 102 will search preset data rate and receiving sensitivity
Index mapping relations, to obtain receiving sensitivity indexs of the AP under current data rate.Receiving sensitivity index refers to currently
The receiver threshold-signal level that AP is supported under data rate, that is, the lowest signal intensity threshold value of radiofrequency signal that AP can be demodulated.
When the receiving sensitivity of AP is less than receiving sensitivity index, the communication process under current data rate, which will occur, largely to be lost
Bag or wrong bag, the ascending performance of AP will be affected.
Wherein, the mapping relations of data rate and receiving sensitivity index can carry out preset according to design requirement, for example,
In a kind of application scenarios, requirement of the different pieces of information speed to receiving sensitivity index is as shown in table 1 below：
Table 1
With reference to table 1, exemplified by supporting the AP of 2.4G frequency ranges, under 802.11n MCS7 data rates, the corresponding receptions of AP
Sensitivity index is -65dBm, i.e., when the signal strength with the associated STA of AP is less than -65dBm, under MCS7 data rates,
Communication process can there are a large amount of packet losses or wrong bag.
Alternatively, data rate is storable in the outside that processor 102 can be inquired about with receiving sensitivity index mapping relations
In memory space.Certainly, in order to save software overhead, data rate may also be stored in place with receiving sensitivity index mapping relations
In the memory for managing device 102.Processor 102 can directly read data rate and receiving sensitivity index mapping relations, and be worked as
The corresponding receiving sensitivity index of preceding data rate.
Receiving sensitivity index of the processor 102 according to the signal strength and AP of the first signal under current data rate
Difference, determines the signal intensity attenuation amount of this cycle permission, and is reset according to the signal intensity attenuation amount that this cycle allows
The pad value of digital pad 104.Alternatively, the signal intensity attenuation of this cycle permission determined for decision processor 102
Amount it is whether reasonable, in the present embodiment, processor 102 according to the signal strength and AP of the first signal under current data rate
Receiving sensitivity index difference after, processor 102 may determine that the difference whether be not less than 0.If the difference is not small
In 0, the signal intensity attenuation amount that illustrating this definite cycle of processor 102 allows is rational, can be allowed according to this cycle
Signal intensity attenuation amount resets the pad value of digital pad 104；If the difference is less than 0, illustrate that processor 102 is true
The signal intensity attenuation amount that fixed this cycle allows is unreasonable, processor 102 this week it is interim will not perform subsequent operation, until
The next cycle reaches.
Accordingly, digital pad 104 is within this cycle according to resetting for the operation performed with above-mentioned processor 102
The follow-up signal that is received to reception antenna 103 on working channel of pad value decay.Correspondingly, Ethernet processing core
Follow-up signal after piece 101 can decay digital pad 104 according to Ethernet protocol is handled, such as demodulation, extraction letter
Number intensity, statistics packet loss etc..
In the present embodiment, increase digital pad in the radio-frequency front-end of AP, with reference to the letter without decay on AP working channels
Number receiving sensitivity index of intensity and AP under current data rate rationally controls the pad value of digital pad, realizes that AP connects
The real-time adjustment of sensitivity is received, weakens annoyance level of the neighboring trace/time neighboring trace to current operating channel, lifting AP is closely being covered
Antijamming capability under scene.
Fig. 2 is a kind of structure diagram for AP that another embodiment of the application provides, and the AP is on the basis of the AP shown in Fig. 1
On, add LNA106.As shown in Fig. 2, in the AP, radio-frequency front-end further includes：LNA106, LNA106 are connected to reception antenna
Between 103 and digital pad 104, the signal for being received to reception antenna carries out low noise amplification.
Wherein, the operation that reception antenna 103, digital pad 104, ethernet processing chip 101 and processor 102 perform
Reference can be made to previous embodiment, details are not described herein.
In the present embodiment, LNA106 is additionally arranged after reception antenna 103, to realize what reception antenna 103 was received
The enhanced processing of radiofrequency signal, improves link gain.
As described above, processor 102 can this cycle reach after, obtain by reception antenna 103 AP working channel
Upper reception but the signal strength for the first signal decayed without digital pad 104.In the present embodiment, the first signal arrives
It can pass through LNA106 before up to ethernet processing chip 101.When LNA106 is operated in bypass states, reception antenna 103 exists
The first signal is received on the working channel of AP, the first signal is amplified by LNA106 but not by LNA106, then by numeral
Attenuator 104 but not decayed by digital pad 104, handled afterwards into ethernet processing chip 101.Work as LNA106
During work magnifying state, reception antenna 103 receives the first signal on the working channel of AP, and the first signal is by LNA106 and quilt
LNA106 amplifies, and then decays by digital pad 104 but not by digital pad 104, afterwards into Ethernet processing
Chip 101 is handled.
, will in order to reduce the weight of the pad value of digital pad 104 and Insertion Loss to the noise coefficient of AP in the present embodiment
LNA106 is arranged between digital pad 104 and reception antenna 103, rather than after digital pad 104.Thus, Fig. 2 institutes
The AP shown can be considered a cascade system, and LNA106 is located at the first order of cascade system, and digital pad 104 is located at cascade system
The second level.Since influence of the first order noise to system noise factor of cascade system is maximum, by digital pad 104
The second level being arranged in cascade system, can reduce digital pad 104 pad value and Insertion Loss to the noise coefficient of AP
Weight, can be preferably minimized the noise coefficient of cascade system, so as to a certain degree while ensureing to be properly received signal
The signal-to-noise ratio of upper improvement AP, optimizes the uplink throughput performance of AP.
Fig. 3 is a kind of structure diagram for AP that the another embodiment of the application provides.The AP can be carried based on previous embodiment
The AP of confession is realized, as shown in figure 3, the AP is further included：Control chip 105；Control chip 105 is connected to processor 102 and numeral
Between attenuator 104, for being controlled for processor 102 to digital pad 104, and signal intensity attenuation amount is stored with connecing
Receive change of sensitivity amount mapping relations.
It should be noted that Fig. 3 illustrate only adds the state in AP structures shown in Fig. 1 by control chip 105, when
So, control chip 105 can be also added in AP structures shown in Fig. 2, either add in the AP structures shown in Fig. 1 or Fig. 2,
The operation that control chip 105 performs all is identical.
In the present embodiment, the signal intensity attenuation amount that this definite cycle of processor 102 allows will pass through control chip 105
Send the signal strength allowed to digital pad 104, digital pad 104 in this cycle for receiving the transmission of processor 102
After attenuation, the signal intensity attenuation amount that will be allowed according to this cycle, inquires about the signal strength being preset in control chip 105 and declines
Decrement and receiving sensitivity variable quantity mapping relations, it is sensitive to obtain reception corresponding with the signal intensity attenuation amount that this cycle allows
It is new pad value to spend variable quantity and set corresponding receiving sensitivity variable quantity.
Wherein, signal intensity attenuation amount and the mapping relations of receiving sensitivity variable quantity can be calculated according to cascading equations and obtained
.In a kind of application scenarios, it can obtain signal intensity attenuation amount as shown in Table 2 with reference to actual test and become with receiving sensitivity
The mapping relations of change amount.
Table 2
With reference to table 2, when current data rate is 11b 1M, when digital pad 104 is receiving the transmission of processor 102
When the signal intensity attenuation amount that this cycle allows is 20dB, the table 2 stored is inquired about in control chip 105, digital pad 104 can
To obtain with the corresponding receiving sensitivity variable quantity of signal intensity attenuation amount of this cycle permission be 8dB, then digital pad 104
Pad value will be set as 8dB.Digital pad 104 will connect on the working channel of AP reception antenna 103 according to pad value 8dB
Received follow-up signal performs signal attenuation processing.
For AP, the operation of Regulate signal decay will be periodically carried out, therefore, determined when according to the various embodiments described above
After going out the pad value for digital pad 104, digital pad 104 persistently will connect reception antenna 103 according to the pad value
Received follow-up signal performs attenuation operations, the pad value until resetting digital pad 104.
Based on above-mentioned, in the above embodiments of the present application and following embodiments, arrived for ease of processor 102 in this cycle
The signal strength for the first signal decayed without digital pad 104, alternatively, processor 102 can be got after reaching
Before the signal strength of the first signal is obtained, the pad value of digital pad 104 can be arranged to 0, alternatively, can be by number
The operating mode of word attenuator is arranged to bypass mode.
In a kind of mode, processor 102 can set digital pad before the signal strength of the first signal is obtained
104 pad value is 0 so that digital pad 104 does not decay signal.For example, processor 102 can obtain the first letter
Number signal strength before, directly pad value 0 is sent to digital pad 104, or processor 102 and passes through control chip
105 send pad value 0 to digital pad 104, so that pad value is reset to 0 by digital pad 104.
In a further mode of operation, processor 102 is before the signal strength of the first signal is obtained, also controllable digital attenuation
Operating mode is switched to bypass mode by device 104.For example, processor 102 can be before the signal strength of the first signal be obtained, directly
Connect to digital pad 104 and send a control signal, or processor 102 can be by control chip 105 to digital pad 104
A control signal is sent, so that operating mode is switched to bypass mode by digital pad 104 according to the control signal.Work as numeral
When attenuator 104 is operated in bypass mode, only as a signalling channel, without attenuation function.
In the present embodiment, before the signal strength that processor 102 obtains the first signal, the decay of digital pad 104
Value resets to 0, or operating mode is switched to bypass mode, avoids what digital pad 104 received reception antenna
The influence of working signal so that the signal strength infinite approach for the first signal that processor 102 is got with the associated STA of AP
Signal strength, so as to ensure the accuracy of the pad value of the digital pad 104 recalculated.
In some scenes, the environment residing for AP may interfere with very seriously, even if performing signal attenuation, can not also ignore
The influence that interference signal is brought, therefore, it is necessary to judge whether the environment residing for AP meets bar of decaying before signal attenuation is performed
Part.
In an alternative embodiment, processor 102 is additionally operable to：Before the signal strength of the first signal is obtained, in this week
When phase reaches, the secondary signal that is received on working channel and after digital pad 104 is decayed is obtained by reception antenna 103
Signal strength, and obtain and received and through digital pad on the neighboring trace and/or secondary neighboring trace of working channel by reception antenna 103
The signal strength of neighboring trace and/or secondary neighboring trace signal after 104 decay；
When the signal strength of secondary signal meets by AP work at present moulds with the signal strength of neighboring trace and/or secondary neighboring trace signal
During the signal strength relation that the spectrum mask of formula is limited, determine to need the pad value for resetting digital pad.
In the present embodiment, digital pad 104 performed decay according to the pad value that a upper cycle determines to working signal, the
Binary signal is to be received by reception antenna 103 on working channel and the working signal after digital pad 104 is decayed, and is to receive
The signal that antenna 103 receives within this cycle on the working channel of AP before the first signal.The intensity of secondary signal can
Determined by processor 102 according to the RSSI value of the working signal after digital pad 104 is decayed, for example, can be by processor 102
The RSSI value of each associated STA is read from ethernet processing chip 101, and then is determined according to the RSSI value of each STA.
Afterwards, each neighboring trace and time neighboring trace, processor 102 that AP can be switched to its working channel respectively are obtained by connecing
The signal strength of the signal received on the neighboring trace after handover of antenna 103 or secondary neighboring trace and after the decay of digital pad 104 is received,
To obtain the signal strength of each neighboring trace and time neighboring trace signal.
For example, if the working channel of AP is 1 channel, AP is switched to 6/11 channel, and is scanned 6 and 11 in current environment
The signal strength of channel, obtains PNeighboring traceAnd PSecondary neighboring trace；If AP is operated in 6 channels, need to scan 1 and 11 channels, the two channels are all
It is the neighboring trace of 6 channels, due to the limitation of 2.4G bin widths, 6 channels are under 20M bandwidth without time neighboring trace；If AP is operated in 11
Channel, then need to scan 1 and 6 channels, 6 channels are neighboring trace, and 1 channel is time neighboring trace.
After the signal strength and the signal strength of neighboring trace and/or secondary neighboring trace signal of secondary signal is obtained, processor 102
The signal strength relation that will be limited according to the spectrum mask of AP current operation modes, judges whether to need to set again in this cycle
Put the pad value of digital pad.
For example, the limitation according to the corresponding spectrum mask of HT20 patterns under 802.11 agreements shown in Fig. 8, it is known that difference ±
The difference between signal strength when 9MHz, ± 11MHz, ± 20MHz and ± 30MHz frequencies be probably 0dBr, 20dBr,
28dBr and 45dBr.Based on this, the limitation of the spectrum mask with reference to shown in Fig. 8, according between side channel and secondary neighboring trace
Frequency-splitting, can compare PNeighboring traceAnd PSecondary neighboring traceWith the size of the intensity of secondary signal, if meeting PNeighboring traceThe intensity of≤secondary signal-
20dB and PSecondary neighboring traceThe condition of the intensity -40dB of≤secondary signal, then continue to execute the digital pad that resets in this cycle
Decay Value Operations；If being unsatisfactory for above-mentioned condition, it is judged as the current environment serious interference of AP, this cycle no longer resets number
The pad value of word attenuator, processor 102 after the default stand-by period, will perform the operation of the present embodiment again, directly
To PNeighboring traceAnd PSecondary neighboring traceAfter meeting above-mentioned condition with the intensity of secondary signal, processor 102 continues to execute the behaviour of Regulate signal decay
Make.What deserves to be explained is dBr and dB are the units for representing signal strength, dBr is the unit for representing relative signal intensity, with
DB does not have too big difference.
In order to verify the reasonability of Regulate signal decay, in the present embodiment, alternatively, processor 102 can also be again
Before the pad value that digital pad is set, the packet loss of secondary signal is counted as initial packet loss；And resetting
After the pad value of digital pad, the packet loss of the follow-up signal after being decayed by digital pad is counted；If follow-up letter
Number packet loss be greater than or equal to initial packet loss, the decay of digital pad is constantly adjusted according to default pad value step-length
Value, untill the packet loss of the follow-up signal after being decayed by digital pad is less than initial packet loss.
In the present embodiment, processor 102 has counted the initial packet loss before resetting digital pad and has reset
The packet loss of follow-up signal after digital pad, by packet loss before and after comparison, judges whether the selection of pad value is reasonable.When
When the packet loss of follow-up signal is less than initial packet loss, it is reasonable to show that pad value is chosen；Be more than when the packet loss of follow-up signal or
During equal to initial packet loss, show that pad value selection is excessive, then processor 102 progressively adjusts number according to default pad value step-length
The pad value of word attenuator 104, until the packet loss of the follow-up signal after being decayed by digital pad is less than initial packet loss
Untill rate.Wherein, pad value step-length can be preset according to actual conditions.
For example, pad value step-length can be arranged to 3dB, when the packet loss of follow-up signal is greater than or equal to initial packet loss
When, processor 102 adjusts the pad value of digital pad 104 by control chip 105, by the current attenuation value of digital pad
Reduce 3dB；Afterwards, processor 102 obtains the packet loss of follow-up signal and initial packet loss again, and compares both sizes,
If the packet loss of follow-up signal still above or equal to initial packet loss, continues declining after digital pad 104 is reduced
Depreciation reduces 3dB again, until the packet loss of the follow-up signal after being decayed by digital pad is less than initial packet loss
Only.
In addition to above-mentioned AP, the embodiment of the present application also provides a kind of method of Regulate signal decay, and this method is mainly retouched
The pad value for how rationally controlling digital pad in AP is stated, this method logic can be performed by the processor inside AP, or
Can also be by being performed independently of an external control devices of AP.Below in conjunction with attached drawing, the method provided the application is real
Example is applied to be described in detail.
Fig. 4 is a kind of flow diagram of the method for Regulate signal decay that one embodiment of the application provides.This method is fitted
For AP, as shown in figure 4, this method includes：
400th, after reaching in this cycle, obtain and received on the working channel of AP by the radio-frequency front-end of AP but declined without numeral
Subtract the signal strength for the first signal that device is decayed；
401st, preset data rate and receiving sensitivity index mapping relations are searched, to obtain AP in current data rate
Under receiving sensitivity index；
402nd, the difference of the receiving sensitivity index according to the signal strength of the first signal and AP under current data rate,
Determine the signal intensity attenuation amount of this cycle permission；
403rd, the signal intensity attenuation amount allowed according to this cycle resets the pad value of digital pad, for numeral
Attenuator within this cycle according to the follow-up signal that the pad value reset receives radio-frequency front-end on working channel into
Row decay.
In the present embodiment, digital pad is additionally arranged in AP, digital pad is mainly used within this cycle according to weight
Newly-installed pad value decays the follow-up signal that radio-frequency front-end receives on working channel, thus weaken neighboring trace/time
Annoyance level of the neighboring trace to current operating channel.
In the present embodiment, the connecing under current data rate with reference to the signal strength on AP working channels without decay and AP
The pad value that sensitivity index rationally controls digital pad is received, realizes the real-time adjustment of AP receiving sensitivities, AP is near for lifting
Antijamming capability under covering scene.
In above-mentioned or following embodiments, the above-mentioned signal intensity attenuation amount allowed according to this cycle resets numeral and declines
Subtract a kind of embodiment of the pad value of device, including：
The signal intensity attenuation amount that this cycle allows is sent to digital pad, to control digital pad from preset
Signal intensity attenuation amount is with obtaining the signal intensity attenuation amount pair allowed with this cycle in receiving sensitivity variable quantity mapping relations
The receiving sensitivity variable quantity answered and to set corresponding receiving sensitivity variable quantity be new pad value.
In present embodiment, above-mentioned signal intensity attenuation amount is storable in numeral with receiving sensitivity variable quantity mapping relations
In the memory of signal attenuator either in control chip.Based on this, when digital pad receives the signal of this cycle permission
When strength retrogression measures, either preset signal intensity attenuation can be read in control chip from the memory of digital signal attenuator
Amount and receiving sensitivity variable quantity mapping relations, so as to obtain reception spirit corresponding with the signal intensity attenuation amount that this cycle allows
Sensitivity variable quantity and to set corresponding receiving sensitivity variable quantity be new pad value.
Alternatively, the above-mentioned signal intensity attenuation amount allowed according to this cycle resets the pad value of digital pad
Another embodiment, including：
Preset signal intensity attenuation amount and receiving sensitivity variable quantity mapping relations are searched, obtains what is allowed with this cycle
New pad value is configured to digital attenuation by the corresponding receiving sensitivity variable quantity of signal intensity attenuation amount as new pad value
In device.
In present embodiment, signal intensity attenuation amount is storable in the processing of AP with receiving sensitivity variable quantity mapping relations
In device or in the memory that can inquire of processor of AP.Based on this, when the signal intensity attenuation amount for determining the permission of this cycle
When, can be from the processor of AP or the memory that can inquire of processor of AP reads preset signal intensity attenuation amount with receiving
Change of sensitivity amount mapping relations, will obtain receiving sensitivity variable quantity corresponding with the signal intensity attenuation amount of this cycle permission
And it is configured to as new pad value, and by new pad value in digital pad.
In above-mentioned or following embodiments, obtaining by being received but without number on working channel of the radio-frequency front-end of AP in AP
Before the signal strength for the first signal that word attenuator is decayed, further include：The pad value of digital pad is arranged to 0；
Alternatively, the operating mode of digital pad is arranged to bypass mode, in order to provide what is do not decayed by digital pad
Signalling channel.
Fig. 5 is a kind of flow diagram of the method for Regulate signal decay that another embodiment of the application provides.Such as Fig. 5 institutes
Show, this method includes：
500th, when reaching in this cycle, obtain and received and after digital pad is decayed on working channel by radio-frequency front-end
Secondary signal signal strength, and obtain received and through number on the neighboring trace and/or secondary neighboring trace of working channel by radio-frequency front-end
The signal strength of neighboring trace and/or secondary neighboring trace signal after the decay of word attenuator.
Whether the signal strength and the signal strength of neighboring trace and/or secondary neighboring trace signal for the 501, judging secondary signal meet by AP
The signal strength relation that the spectrum mask of current operation mode is limited, if it is satisfied, then step 502 is performed, if conditions are not met,
Then after the default stand-by period, step 500 is performed.
502nd, obtain what is received on the working channel of AP by the radio-frequency front-end of AP but decayed without digital pad
The signal strength of first signal.
503rd, preset data rate and receiving sensitivity index mapping relations are searched, to obtain AP in current data rate
Under receiving sensitivity index.
504th, the difference of the receiving sensitivity index according to the signal strength of the first signal and AP under current data rate,
Determine the signal intensity attenuation amount of this cycle permission.
505th, the signal intensity attenuation amount allowed according to this cycle resets the pad value of digital pad, for numeral
Attenuator within this cycle according to the follow-up signal that the pad value reset receives radio-frequency front-end on working channel into
Row decay.
In the present embodiment, the first signal is the signal after secondary signal, and first and second be only to distinguish, not first
The restriction of order and quantity afterwards.
In the present embodiment, judge whether the environment residing for AP meets damp condition before signal attenuation is performed, work as AP
When residing environmental disturbances are very serious, follow-up signal attenuation operation is no longer performed, but wait the environmental disturbances residing for AP
Meet to perform signal attenuation operation during damp condition again, so as to avoid performing useless signal attenuation operation.
Fig. 6 is the flow diagram of the method for another Regulate signal decay provided by the embodiments of the present application.Such as Fig. 6 institutes
Show, this method includes：
600th, when reaching in this cycle, obtain and received and after digital pad is decayed on working channel by radio-frequency front-end
Secondary signal signal strength, and obtain received and through number on the neighboring trace and/or secondary neighboring trace of working channel by radio-frequency front-end
The signal strength of neighboring trace and/or secondary neighboring trace signal after the decay of word attenuator.
601st, whether the signal strength of interpretation secondary signal and the signal strength of neighboring trace and/or secondary neighboring trace signal meet by AP
The signal strength relation that the spectrum mask of current operation mode is limited, if it is satisfied, step 602 is performed, if conditions are not met, then
After the default stand-by period, step 600 is performed.
602nd, obtain what is received on the working channel of AP by the radio-frequency front-end of AP but decayed without digital pad
The signal strength of first signal.
603rd, preset data rate and receiving sensitivity index mapping relations are searched, to obtain AP in current data rate
Under receiving sensitivity index.
604th, the difference of the receiving sensitivity index according to the signal strength of the first signal and AP under current data rate,
Determine the signal intensity attenuation amount of this cycle permission.
605th, the packet loss of secondary signal is counted as initial packet loss.
606th, the signal intensity attenuation amount allowed according to this cycle resets the pad value of digital pad, for numeral
Attenuator within this cycle according to the follow-up signal that the pad value reset receives radio-frequency front-end on working channel into
Row decay.
607th, the packet loss of the follow-up signal after statistics is decayed by digital pad.
608th, whether the packet loss of interpretation follow-up signal is greater than or equal to initial packet loss, if it is, performing step
609, if it is not, then waiting next cycle to reach.
609th, the pad value of digital pad is constantly adjusted according to default pad value step-length, and be back to step 605 after
It is continuous to perform step 605 and subsequent step, until the packet loss of the follow-up signal after being decayed by digital pad is less than initially
Untill packet loss.
In the present embodiment, on the basis of embodiment illustrated in fig. 5, the whether reasonable step of verification pad value is added,
When pad value is excessive, the pad value of digital pad is constantly adjusted according to default pad value step-length, is realized to pad value
It is multistage adjustable, and Adjustment precision is high, so as to obtain rational pad value, realizes the real-time adjustment of AP receiving sensitivities.
It should be noted that the executive agent that above-described embodiment provides each step of method may each be same equipment,
Alternatively, this method is also by distinct device as executive agent.For example the executive agent of step 400 to step 403 can be equipment
A；Again for example, step 400 and 402 executive agent can be device A, and the executive agent of step 403 can be equipment B；Etc..
In addition, in some flows of description in above-described embodiment and attached drawing, contain what is occurred according to particular order
Multiple operations, but it should be clearly understood that these operations can not perform or parallel according to the order that it occurs herein
Perform, the sequence number such as 401,402 etc. of operation, is only used for distinguishing each different operation, sequence number does not represent any in itself
Execution sequence.In addition, these flows can include more or fewer operations, and these operations can perform in order or
It is parallel to perform.It should be noted that the description such as herein " first ", " second ", be for distinguish different message, equipment,
Module etc., does not represent sequencing, and it is different types also not limit " first " and " second ".
Fig. 7 is the structure diagram for the control device that the another embodiment of the application provides.As shown in fig. 7, the control device,
Including：Memory 71, processor 72 and communication component 73.
Memory 71, for storing computer program, and can be configured as storing other various data to support controlling
Operation in equipment.The example of these data includes the finger of any application program or method for operating on the control device
Order, contact data, telephone book data, message, picture, video etc..
Memory 71 can realize by any kind of volatibility or non-volatile memory device or combinations thereof, such as
Static RAM (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable is read-only to be deposited
Reservoir (EPROM), programmable read only memory (PROM), read-only storage (ROM), magnetic memory, flash memory, disk or
CD.
Processor 72, couples with memory 71, for performing the computer program in memory 71, for：
After this cycle reaches, obtain and received but without digital pad on the working channel of AP by the radio-frequency front-end of AP
The signal strength for the first signal decayed；
Preset data rate and receiving sensitivity index mapping relations are searched, to obtain AP under current data rate
Receiving sensitivity index；
According to the difference of the receiving sensitivity index of the signal strength of the first signal and AP under current data speed, this is determined
The signal intensity attenuation amount that cycle allows；
The signal intensity attenuation amount allowed according to this cycle resets the pad value of digital pad, for digital attenuation
Device declines the follow-up signal that radio-frequency front-end receives on working channel according to the pad value reset within this cycle
Subtract.
In an alternative embodiment, processor 72 resets numeral according to the signal intensity attenuation amount that this cycle allows and declines
When subtracting the pad value of device, it is specifically used for：
The signal intensity attenuation amount that this cycle allows is sent to digital pad, to control digital pad from preset
Signal intensity attenuation amount is with obtaining the signal intensity attenuation amount pair allowed with this cycle in receiving sensitivity variable quantity mapping relations
The receiving sensitivity variable quantity answered and to set corresponding receiving sensitivity variable quantity be new pad value；Or
Preset signal intensity attenuation amount and receiving sensitivity variable quantity mapping relations are searched, obtains what is allowed with this cycle
New pad value is configured to digital attenuation by the corresponding receiving sensitivity variable quantity of signal intensity attenuation amount as new pad value
In device.
In an alternative embodiment, processor 72 obtain by working channel of the radio-frequency front-end of AP in AP receive but not
Before the signal strength for the first signal decayed through digital pad, it is additionally operable to：
The pad value of digital pad is arranged to 0；Alternatively,
The operating mode of digital pad is arranged to bypass mode.
In an alternative embodiment, processor 72 obtain by working channel of the radio-frequency front-end of AP in AP receive but not
Before the signal strength for the first signal decayed through digital pad, it is additionally operable to：
When reaching in this cycle, obtain by radio-frequency front-end and to be received on working channel and after digital pad is decayed
The signal strength of binary signal, and obtain and received on the neighboring trace and/or secondary neighboring trace of working channel by radio-frequency front-end and declined through numeral
Subtract the signal strength of neighboring trace and/or secondary neighboring trace signal after device decay；
When the signal strength of secondary signal meets by AP work at present moulds with the signal strength of neighboring trace and/or secondary neighboring trace signal
During the signal strength relation that the spectrum mask of formula is limited, determine to need the pad value for resetting digital pad.
In an alternative embodiment, processor 72, is additionally operable to：
Before the pad value of digital pad is reset, the packet loss of secondary signal is counted as initial packet loss；
After the pad value of digital pad is reset, the follow-up signal after being decayed by digital pad is counted
Packet loss；
If the packet loss of follow-up signal is greater than or equal to initial packet loss, number is constantly adjusted according to default pad value step-length
The pad value of word attenuator, until the packet loss of the follow-up signal after being decayed by digital pad is less than initial packet loss
Only.
Further, as shown in fig. 7, the control device further includes：Display 74, power supply module 75, audio component 76 etc. its
Its component.Members are only schematically provided in Fig. 7, are not meant to that control device only includes component shown in Fig. 7.
Wherein, wired or wireless side between equipment and other equipment where communication component 73 is configured to facilitate communication component
The communication of formula.Equipment where communication component can access the wireless network based on communication standard, such as WiFi, 2G or 3G, or they
Combination.In one exemplary embodiment, communication component is received from the wide of external broadcasting management system via broadcast channel
Broadcast signal or broadcast related information.In one exemplary embodiment, communication component further includes near-field communication (NFC) module, with
Promote junction service.For example, can be based on radio frequency identification (RFID) technology in NFC module, Infrared Data Association (IrDA) technology, surpasses
Broadband (UWB) technology, bluetooth (BT) technology and other technologies are realized.
Wherein, display 74 includes screen, its screen can include liquid crystal display (LCD) and touch panel (TP).Such as
Fruit screen includes touch panel, and screen may be implemented as touch-screen, to receive input signal from the user.Touch panel bag
One or more touch sensors are included to sense the gesture on touch, slip and touch panel.Touch sensor can not only be felt
The boundary of a touch or slide action is surveyed, but also is detected and touch or the relevant duration and pressure of slide.
Wherein, power supply module 75, the various assemblies of equipment provide electric power where power supply module.Power supply module can include
Power-supply management system, one or more power supplys, and other are generated to the equipment where power supply module, management and distribution electric power are related
The component of connection.
Wherein, audio component 76, can be configured as output and/or input audio signal.For example, audio component includes one
Microphone (MIC), the equipment where audio component is in operator scheme, such as call model, logging mode and speech recognition mode
When, microphone is configured as receiving external audio signal.The received audio signal can be further stored in memory or
Sent via communication component.In certain embodiments, audio component further includes a loudspeaker, for exports audio signal.
Correspondingly, the embodiment of the present application also provides a kind of computer-readable recording medium for being stored with computer program, meter
Calculation machine program is performed each step that can be realized in above method embodiment.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more
The computer program production that usable storage medium is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or square frame in journey and/or square frame and flowchart and/or the block diagram.These computer programs can be provided
The processors of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices, which produces, to be used in fact
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided and is used for realization in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a square frame or multiple square frames.
In a typical configuration, computing device includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include computer-readable medium in volatile memory, random access memory (RAM) and/or
The forms such as Nonvolatile memory, such as read-only storage (ROM) or flash memory (flash RAM).Memory is computer-readable medium
Example.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer-readable instruction, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only storage (ROM), electric erasable
Programmable read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc read-only storage (CD-ROM),
Digital versatile disc (DVD) or other optical storages, magnetic cassette tape, the storage of tape magnetic rigid disk or other magnetic storage apparatus
Or any other non-transmission medium, the information that can be accessed by a computing device available for storage.Define, calculate according to herein
Machine computer-readable recording medium does not include temporary computer readable media (transitory media), such as data-signal and carrier wave of modulation.
It should also be noted that, term " comprising ", "comprising" or its any other variant are intended to nonexcludability
Comprising so that process, method, commodity or equipment including a series of elements not only include those key elements, but also wrapping
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment it is intrinsic will
Element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that wanted including described
Also there are other identical element in the process of element, method, commodity or equipment.
The foregoing is merely embodiments herein, is not limited to the application.For those skilled in the art
For, the application can have various modifications and variations.All any modifications made within spirit herein and principle, be equal
Replace, improve etc., it should be included within the scope of claims hereof.
Claims (12)
- A kind of 1. method of Regulate signal decay, suitable for wireless access point AP, it is characterised in that the described method includes：After reaching in this cycle, obtain and received on the working channel of the AP by the radio-frequency front-end of the AP but declined without numeral Subtract the signal strength for the first signal that device is decayed；Preset data rate and receiving sensitivity index mapping relations are searched, to obtain the AP under current data rate Receiving sensitivity index；According to the difference of the receiving sensitivity index of the signal strength and the AP of first signal under current data rate, Determine the signal intensity attenuation amount of this cycle permission；The signal intensity attenuation amount allowed according to described cycle resets the pad value of the digital pad, for described Digital pad receives on the working channel radio-frequency front-end according to the pad value reset within this cycle Follow-up signal decay.
- 2. the according to the method described in claim 1, it is characterized in that, signal intensity attenuation allowed according to described cycle Amount resets the pad value of the digital pad, including：The signal intensity attenuation amount that described cycle allows is sent to the digital pad, to control the digital pad The signal allowed with described cycle is obtained from preset signal intensity attenuation amount and receiving sensitivity variable quantity mapping relations It is new pad value that strength retrogression, which measures corresponding receiving sensitivity variable quantity and sets the corresponding receiving sensitivity variable quantity,； OrPreset signal intensity attenuation amount and receiving sensitivity variable quantity mapping relations are searched, obtains what is allowed with described cycle The new pad value is configured to described by the corresponding receiving sensitivity variable quantity of signal intensity attenuation amount as new pad value In digital pad.
- 3. according to the method described in claim 1, it is characterized in that, obtain by the AP radio-frequency front-end the AP work Before making the signal strength of the first signal that receives on channel but decay without digital pad, further include：The pad value of the digital pad is arranged to 0；Alternatively,The operating mode of the digital pad is arranged to bypass mode.
- 4. according to claim 1-3 any one of them methods, it is characterised in that obtaining by the radio-frequency front-end of the AP in institute Before the signal strength for stating the first signal for receiving on the working channel of AP but decaying without digital pad, further include：When reaching in this cycle, obtain and received on the working channel by the radio-frequency front-end and declined through the digital pad The signal strength of secondary signal after subtracting, and obtain by neighboring trace of the radio-frequency front-end in the working channel and/or secondary neighboring trace Upper reception and neighboring trace and/or the signal strength of secondary neighboring trace signal after digital pad decay；When the signal strength of the secondary signal meets to be worked as by the AP with the signal strength of the neighboring trace and/or secondary neighboring trace signal During the signal strength relation that the spectrum mask of preceding operating mode is limited, determine to need to reset declining for the digital pad Depreciation.
- 5. according to the method described in claim 4, it is characterized in that, further include：Before the pad value of the digital pad is reset, the packet loss of the secondary signal is counted as initial packet loss Rate；After the pad value of the digital pad is reset, count described in after being decayed as the digital pad The packet loss of follow-up signal；If the packet loss of the follow-up signal is greater than or equal to the initial packet loss, constantly adjusted according to default pad value step-length The pad value of the whole digital pad, until the packet loss of the follow-up signal after being decayed by the digital pad Untill the initial packet loss.
- A kind of 6. wireless access point AP, it is characterised in that including：Sequentially connected radio-frequency front-end, ethernet processing chip and place Manage device；The radio-frequency front-end includes reception antenna and digital pad；The processor is connected with the digital pad；The processor, for after this cycle reaches, obtaining and being received by the reception antenna on the working channel of the AP But the signal strength for the first signal decayed without the digital pad；Preset data rate and receiving sensitivity index mapping relations are searched, to obtain the AP under current data rate Receiving sensitivity index；According to the difference of the receiving sensitivity index of the signal strength and the AP of first signal under current data rate, Determine the signal intensity attenuation amount of this cycle permission；The signal intensity attenuation amount allowed according to described cycle resets the pad value of the digital pad；The digital pad, within this cycle according to the pad value reset to the reception antenna in the work The follow-up signal received on channel is decayed；The ethernet processing chip, carries out for the follow-up signal after decaying according to Ethernet protocol to the digital pad Processing.
- 7. AP according to claim 6, it is characterised in that the radio-frequency front-end further includes：Low-noise amplifier LNA, institute LNA is stated to be connected between the reception antenna and the digital pad, for the signal that the reception antenna receives into Row low noise amplification.
- 8. AP according to claim 6, it is characterised in that further include：Control chip；The control chip is connected to described Between processor and the digital pad, for being controlled for the processor to the digital pad, and letter is stored Number strength retrogression amount and receiving sensitivity variable quantity mapping relations；The processor is specifically used for when resetting the pad value of the digital pad：Will by the control chip The signal intensity attenuation amount that described cycle allows is sent to the digital pad；The digital pad is additionally operable to：Inquiry is preset in signal intensity attenuation amount and receiving sensitivity in the control chip Variable quantity mapping relations, obtain receiving sensitivity variable quantity corresponding with the signal intensity attenuation amount that described cycle allows and set It is new pad value to put the corresponding receiving sensitivity variable quantity.
- 9. AP according to claim 6, it is characterised in that the processor is additionally operable to：Obtaining first signal Before signal strength, the pad value of the digital pad is arranged to 0, alternatively, the operating mode by the digital pad It is arranged to bypass mode.
- 10. according to claim 6-9 any one of them AP, it is characterised in that the processor is additionally operable to：Before the signal strength of first signal is obtained, when reaching in this cycle, obtain by the reception antenna described The signal strength of reception and the secondary signal after digital pad decay on working channel, and obtain by the reception day Line is received on the neighboring trace and/or secondary neighboring trace of the working channel and the neighboring trace and/or secondary after digital pad decay The signal strength of neighboring trace signal；When the signal strength of the secondary signal meets to be worked as by the AP with the signal strength of the neighboring trace and/or secondary neighboring trace signal During the signal strength relation that the spectrum mask of preceding operating mode is limited, determine to need to reset declining for the digital pad Depreciation.
- 11. AP according to claim 10, it is characterised in that the processor is additionally operable to：Before the pad value of the digital pad is reset, the packet loss of the secondary signal is counted as initial packet loss Rate；After the pad value of the digital pad is reset, count described in after being decayed as the digital pad The packet loss of follow-up signal；If the packet loss of the follow-up signal is greater than or equal to the initial packet loss, constantly adjusted according to default pad value step-length The pad value of the whole digital pad, until the packet loss of the follow-up signal after being decayed by the digital pad Untill the initial packet loss.
- A kind of 12. control device, it is characterised in that including：Memory and processor；The memory, is stored with one or more programmed instruction；The processor, coupled to the memory, for performing one or more programmed instruction, for：After this cycle reaches, obtain and received on the working channel of the AP by the radio-frequency front-end of the AP but declined without numeral Subtract the signal strength for the first signal that device is decayed；Preset data rate and receiving sensitivity index mapping relations are searched, to obtain the AP under current data rate Receiving sensitivity index；According to the difference of the receiving sensitivity index of the signal strength and the AP of first signal under current data speed, really The signal intensity attenuation amount that this fixed cycle allows；The signal intensity attenuation amount allowed according to described cycle resets the pad value of the digital pad, for described Digital pad receives on the working channel radio-frequency front-end according to the pad value reset within this cycle Follow-up signal decay.
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| US11329680B2 (en) | 2020-05-22 | 2022-05-10 | Moxa Inc. | Receiving device and method for dynamically adjusting the attenuation of the received signal |
| CN114641056A (en) * | 2020-12-16 | 2022-06-17 | 阿里巴巴集团控股有限公司 | Processing unit and method for adjusting gain of receiver |
| CN114641056B (en) * | 2020-12-16 | 2024-03-15 | 阿里巴巴集团控股有限公司 | Processing unit and method for adjusting gain of receiver |
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Application publication date: 20180511 |