CN110087255A - Information statistical method and device - Google Patents
Information statistical method and device Download PDFInfo
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- CN110087255A CN110087255A CN201910322938.8A CN201910322938A CN110087255A CN 110087255 A CN110087255 A CN 110087255A CN 201910322938 A CN201910322938 A CN 201910322938A CN 110087255 A CN110087255 A CN 110087255A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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Abstract
The present invention provides a kind of information statistical method and device, the described method includes: when receiving the signal frame that multiple target terminals are sent, detection frame is sent to multiple target terminals, and the RSSI value of multiple target terminals is measured based on the ACK frame of the multiple target terminals received；RSSI threshold value is determined according to the greatest rssi value in the RSSI value of multiple target terminals, and when determination meets RSSI threshold value update condition, updates identified RSSI threshold value；The target terminal for entering the specified region is counted according to identified RSSI threshold value.Automatically determining and updating for RSSI threshold value may be implemented using the embodiment of the present invention, improve the efficiency and accuracy rate for determining RSSI threshold value.
Description
Technical field
The present invention relates to network communication technology field more particularly to a kind of information statistical methods and device.
Background technique
In recent years, as the quick of smart phone is popularized, based on WLAN (English: Wireless Local Area
Network, referred to as: WLAN) wireless access technology has also obtained commonly used, based on wlan network to entering specified region (such as
Shop in market) personnel counted application it is also more and more extensive.(such as infrared, face is known with other statisticals
Not etc.) compare, the media access control (English: Media of the available mobile phone terminal of the statistical based on wlan network
Access Control, referred to as: MAC) address, which can not only identify mobile phone terminal holder, but also can pass through
Third-party big data platform obtains the data such as the corresponding communications identification of MAC Address, behavior record.
Currently, the statistical based on wlan network to the personnel for entering specified region, usually specifies region in distance
Place WLAN access point (English: Access Point, abbreviation: AP) in the position of entrance pre-determined distance (such as several meters).When terminal
When holder enters specified region from entrance, WLAN AP (hereinafter abbreviation AP) can receive the signal frame of terminal sending, and survey
The corresponding received signal strength indicator of amount frame (English: Received Signal Strength Indication, referred to as:
RSSI) value.Since terminal is closer with AP, the RSSI value for the frame that the terminal that AP is measured is sent is higher.It therefore, can foundation
Whether RSSI value reaches default RSSI threshold value to judge whether holder terminal enters specified region.
However practice discovery, the current implementation that the personnel for entering specified region are counted based on wlan network
In, it needs individually to carry out manual testing to variant specified region respectively, and each based on the setting of measurement result combination practical experience
The specified corresponding RSSI threshold value in region, larger workload realize that efficiency is lower.
Summary of the invention
In view of this, the present invention provides a kind of information statistical method and device, with solve it is existing based on wlan network into
Enter the problem of RSSI threshold value determines low efficiency in the implementation that the personnel in specified region are counted.
In a first aspect, the present invention provides a kind of information statistical method, applied to the AP of specified deployed in areas, the method
Include:
When receiving the signal frame that multiple target terminals are sent, detection frame is sent to the multiple target terminal；
And the ACK frame sent based on the multiple target terminal received, measure the RSSI of the multiple target terminal
Value；
RSSI threshold value is determined according to the greatest rssi value in the RSSI value of the multiple target terminal, and is met when determining
When RSSI threshold value update condition, identified RSSI threshold value is updated；
According to identified RSSI threshold value, the target terminal for entering the specified region is counted.
With reference to first aspect, in the first possible implementation, the RSSI according to the multiple target terminal
Greatest rssi value in value determines RSSI threshold value, comprising:
When the quantity of the multiple target terminal reaches the first amount threshold, and the quantity of the ACK frame received reaches
When two amount thresholds, RSSI threshold value is determined according to the greatest rssi value in the RSSI value of the multiple target terminal；
Or,
RSSI threshold is determined according to the greatest rssi value in the RSSI value of the multiple target terminals measured in preset duration
Value.
With reference to first aspect or the first possible implementation of first aspect, in second of possible implementation
In, the greatest rssi value in the RSSI value according to the multiple target terminal determines RSSI threshold value, comprising:
The difference of the greatest rssi value and the first RSSI value adjusting parameter is determined as RSSI threshold value；Wherein, described
One RSSI value adjusting parameter is greater than 0；
Or,
The product of the greatest rssi value and the second RSSI value adjusting parameter is determined as RSSI threshold value；Wherein, described second
RSSI value adjusting parameter is less than 1.
With reference to first aspect, in the third possible implementation, described when determination meets RSSI threshold value update condition
When, update identified RSSI threshold value, comprising:
When the first RSSI value measured is greater than recorded greatest rssi value, the greatest rssi value recorded is updated
For first RSSI value；
According to first RSSI value, the RSSI threshold value is updated.
With reference to first aspect, in the fourth possible implementation, the RSSI according to the multiple target terminal
Greatest rssi value in value determines RSSI threshold value, comprising:
According to predetermined period, periodically according in the RSSI value of the multiple target terminals measured in current period most
Big RSSI value determines the RSSI threshold value used in current period；
It is described when determine meet RSSI threshold value update condition when, update determined by RSSI threshold value, comprising:
In current period, according to the maximum in the RSSI value of the multiple target terminals measured in the current period
RSSI value updates RSSI threshold value determined by the previous cycle of the current period.
Second aspect, the present invention provide a kind of information statistical device, applied to the AP of specified deployed in areas, described device
Include:
Receiving unit, the signal frame sent for receiving multiple target terminals；
Transmission unit, when for receiving the signal frame of the multiple target terminal transmission when the receiving unit, to institute
It states multiple target terminals and sends detection frame；
Measuring unit, the confirmation ACK that the multiple target terminal for being also used to be received based on the receiving unit is sent
Frame measures the RSSI value of the multiple target terminal；
Determination unit determines RSSI threshold value for the greatest rssi value in the RSSI value according to the multiple target terminal；
Updating unit, for updating identified RSSI threshold value when determination meets RSSI threshold value update condition；
Statistic unit, for being united to the target terminal for entering the specified region according to identified RSSI threshold value
Meter.
In conjunction with second aspect, in the first possible implementation, the determination unit is specifically used for when the multiple
The quantity of target terminal reaches the first amount threshold, and the quantity of ACK frame that the receiving unit receives reaches the second quantity
When threshold value, RSSI threshold value is determined according to the greatest rssi value in the RSSI value of the multiple target terminal；Or, according to when default
The greatest rssi value in RSSI value measured in length determines RSSI threshold value.
In conjunction with the possible implementation of the first of second aspect or second aspect, in second of possible implementation
In, the determination unit, specifically for the difference of the greatest rssi value and the first RSSI value adjusting parameter is determined as RSSI
Threshold value；Wherein, the first RSSI value adjusting parameter is greater than 0；Or, by the greatest rssi value and the second RSSI value adjusting parameter
Product be determined as RSSI threshold value；Wherein, the second RSSI value adjusting parameter is less than 1.
In conjunction with second aspect, in the third possible implementation, the updating unit is specifically used for working as the measurement
When the first RSSI value that unit measures is greater than recorded greatest rssi value, the greatest rssi value recorded is updated to described
First RSSI value；
The determination unit is also used to be updated the RSSI threshold value according to first RSSI value.
In conjunction with second aspect, in the fourth possible implementation, the determination unit was specifically used for according to default week
Phase periodically determines current week according to the greatest rssi value in the RSSI value of the multiple target terminals measured in current period
The RSSI threshold value used in phase；
The updating unit is specifically used in current period, according to the multiple mesh measured in the current period
The greatest rssi value marked in the RSSI value of terminal updates RSSI threshold value determined by the previous cycle of the current period.
Using technical solution disclosed by the invention, through AP when receiving the signal frame that multiple target terminals are sent, to
Multiple target terminal sends probe messages, and it is whole that the ACK frame based on the multiple target terminal received measures multiple target
The RSSI value at end, and RSSI threshold value is determined according to the greatest rssi value in the RSSI value of multiple target terminal, meet when determining
When RSSI threshold value update condition, identified RSSI threshold value is updated, in turn, according to identified RSSI threshold value to the specified area of entrance
The target terminal in domain is counted, and automatically determining for RSSI threshold value is realized, and improves the efficiency of determining RSSI threshold value, and RSSI
Threshold value can when meeting update condition adaptive updates, improve the accuracy of RSSI threshold value.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of information statistical method provided in an embodiment of the present invention；
Fig. 2 is the relation schematic diagram of a kind of RSSI value and distance provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of information statistical device provided in an embodiment of the present invention；
Fig. 4 is a kind of hardware structural diagram of information statistical device provided in an embodiment of the present invention.
Specific embodiment
Technical solution in embodiment in order to enable those skilled in the art to better understand the present invention, and make of the invention real
The above objects, features, and advantages for applying example can be more obvious and easy to understand, with reference to the accompanying drawing to technical side in the embodiment of the present invention
Case is described in further detail.
It referring to Figure 1, is a kind of flow diagram of information statistical method provided in an embodiment of the present invention, wherein the letter
Breath statistical method can be applied to the WLAN disposed in specified region (shop, park or recreation ground in such as market, market)
AP (hereinafter referred to as AP), as shown in Figure 1, the information statistical method may comprise steps of:
Step 101, when receiving the signal frame that multiple target terminals are sent, send and detect to multiple target terminal
Frame.
Step 102, the ACK frame sent based on the multiple target terminals received, measure the RSSI of multiple target terminal
Value.
In the embodiment of the present invention, target terminal is simultaneously not specific to a certain fixed terminal equipment, but may refer to any to finger
Determine the terminal device (e.g., mobile phone) that the AP disposed in region sends signal frame.It should be noted that in the embodiment of the present invention, it is right
The measurement of the RSSI value of multiple target terminals carries out independently of each other, i.e., multiple target terminals, AP described in step 101 is connect
The signal frame that any target terminal is sent is received, detection frame can be sent to the target terminal, which is directed to triggering
The RSSI value of terminal measures.
In the embodiment of the present invention, it is contemplated that when terminal device sends signal frame with different rates, the transmitting function of terminal device
Rate can have differences.
For example, for the same mobile phone terminal, when it sends signal frame with low rate, transmission power be can achieve
Theoretical maximum transmission power；And when it sends signal frame with high-speed, transmission power is usually less than theoretical maximum hair
Penetrate power.
Correspondingly, in embodiments of the present invention, in order to reduce the shadow of the accuracy that transmission power difference measures RSSI value
Ring, AP no longer directly carries out the passive measurement of RSSI value according to the signal frame that the target terminal that receives is sent, but pass through to
The mode that target terminal sends detection frame triggers target terminal response confirmation (English: ACK) frame, and based on the ACK frame received
The RSSI value of target terminal is measured, to realize the RSSI value for actively measuring target terminal.
It is usually all that ACK frame is sent with fixed low rate, therefore, based on the ACK frame received in order to ensure reliability
The RSSI value of measurement target terminal can reduce the influence for the accuracy that transmission power difference measures RSSI value, improve RSSI value
Measurement accuracy.
Illustratively, which may include sky data (English: NULL-DATA) frame or other can be set with triggering terminal
The frame of standby response ACK frame.
In one example, for either objective terminal, when AP receives the signal frame of target terminal transmission, AP to
The target terminal sends the detection of certain amount (referred to herein as the first quantity can be set according to actual scene, such as 10)
Frame, and the ACK frame of target terminal response is received, the RSSI value based on the ACK frame measurement target terminal received.
For example, AP is based respectively on the RSSI value of each ACK frame measurement target terminal received, and each ACK frame is corresponding
The average value of RSSI value is determined as measuring the RSSI value of target terminal.
Step 103 determines RSSI threshold value according to the maximum value in the RSSI value of multiple target terminal, and meets when determining
When RSSI threshold value update condition, identified RSSI threshold value is updated.
In the embodiment of the present invention, it is contemplated that the position of the specified region AP installation of difference may be different, and installation site is different
The signal of AP may be received and be had an impact.
For example, it is in market for shop by specified region, due to shop totality decoration style or the difference of policy,
The AP in certain shops allows to be directly installed below ceiling, even directly hangs on metallic conduit；And certain shops do not allow
It destroys whole decoration style, AP is required to be necessarily mounted inside ceiling.And ceiling is larger to the influence of fading of signal, according to
Unlike material and thickness are likely to be breached 10 several dB.
It therefore, can be received according to the signal of the AP in different specified regions in order to obtain more accurate threshold parameter
Actual conditions determine corresponding RSSI threshold value.
Correspondingly, it in the embodiment of the present invention, can be determined according to the maximum value of the RSSI value of above-mentioned multiple target terminals
RSSI threshold value.
Step 104, according to identified RSSI threshold value, the target terminal for entering specified region is counted.
It, can be specified to entering according to identified RSSI threshold value when AP has determined RSSI threshold value in the embodiment of the present invention
The target terminal in region is counted.
Wherein, when update has occurred in RSSI threshold value, which is updated RSSI threshold value.
For example, RSSI threshold value has been determined as AP, and when receiving the signal frame of target terminal transmission, AP is sent out to target terminal
The detection frame of the first quantity is sent, and the ACK frame based on the target terminal response received measures the RSSI value of the target terminal, if
The RSSI value is greater than RSSI threshold value, it is determined that target terminal enters specified region, at this point, by the number for the personnel for entering specified region
Mesh adds 1.
As it can be seen that in method flow shown in Fig. 1, measure the RSSI value of target terminal by AP, and according to measuring
Greatest rssi value in RSSI value determines RSSI threshold value, in turn, according to determining RSSI threshold value to the target for entering specified region
Terminal is counted, and automatically determining for RSSI threshold value is realized, and improves the efficiency of determining RSSI threshold value, and RSSI threshold value can be with
The adaptive updates when meeting update condition improve the accuracy of RSSI threshold value.
Optionally, the present invention in one embodiment, in the above-mentioned RSSI value according to multiple target terminal most
Big RSSI value determines RSSI threshold value, may include:
When the quantity of multiple target terminal reaches the first amount threshold, and the quantity of the ACK frame received reaches second
When amount threshold, RSSI threshold value is determined according to the greatest rssi value in the RSSI value of multiple target terminal.
In this embodiment, in order to improve the accuracy of the RSSI value measured, during the determination of RSSI threshold value, AP
Record has measured the quantity of the target terminal of RSSI value, and the quantity of the ACK frame received.
When AP determines that the quantity for the target terminal for having measured RSSI value reaches preset quantity and (is properly termed as the first number herein
Threshold value is measured, value can be set according to actual scene, and such as 10), and the quantity of the ACK frame received reaches preset quantity (this
The second amount threshold is properly termed as in text, value can be set according to actual scene, and such as 100) when, AP is according to multiple target
Greatest rssi value in the RSSI value of terminal determines RSSI threshold value.
Illustratively, AP record measure greatest rssi value (initial value of the greatest rssi value can be set to 0 or its
Its lesser value), when AP measures the RSSI value of target terminal based on the ACK frame received, AP compares the RSSI value and oneself
The greatest rssi value of body record, if the RSSI value is greater than the greatest rssi value of self record, by the maximum RSSI of self record
Value is updated to the RSSI value；Otherwise, the greatest rssi value of self record is not updated.
It should be noted that in embodiments of the present invention, AP can also be in the quantity for the target terminal for having measured RSSI value
Reach the first amount threshold, or, when the quantity of the ACK frame received reaches the second amount threshold, according to multiple target terminal
RSSI value in greatest rssi value determine RSSI threshold value.
Optionally, in another embodiment, the maximum in the above-mentioned RSSI value according to multiple target terminal
RSSI value determines RSSI threshold value, may include:
RSSI threshold value is determined according to the greatest rssi value in the RSSI value for measuring multiple target terminals in preset duration.
In this embodiment, in order to improve the accuracy of the RSSI value measured, during the determination of RSSI threshold value, AP
The duration of determining RSSI threshold value can be set (referred to herein as preset duration, value can be set according to actual scene).
For example, AP starts a timer, the timing of the timer when AP measures the RSSI value of target terminal for the first time
Shi Changwei preset duration, and when the timer expiry, AP is according to the multiple target terminals measured in the preset duration
Maximum value in RSSI value determines RSSI threshold value.
It should be noted that in the above-described embodiments, due to from starting to measure the RSSI value of target terminal to determining RSSI
Threshold value needs a process, for determining RSSI threshold value during the RSSI threshold value of target terminal that measures, can use
Data are first recorded, judge whether that the mode for entering specified region is counted again after RSSI threshold value has been determined, i.e., in determination
Before RSSI threshold value, record the target terminal measured RSSI value and corresponding target terminal, when RSSI threshold value has been determined
When, compare the RSSI value measured in the determination RSSI threshold process of self record and the RSSI threshold value of determination, to judge to correspond to
Target terminal whether enter specified region.
In addition, in embodiments of the present invention, can also using the target terminal that has measured RSSI value quantity, receive
The quantity of ACK frame and measurement duration are as RSSI threshold value fixed condition really.
For example, AP starts a timer, the timing of the timer when AP measures the RSSI value of target terminal for the first time
Shi Changwei preset duration, if before timer expiry, the quantity that AP has measured the target terminal of RSSI value reaches the first amount threshold,
Or/and the quantity of the ACK frame received reaches the second amount threshold, then stops timer, and according in the RSSI value measured
Greatest rssi value determine RSSI threshold value；If before timer expiry, the quantity that AP has measured the target terminal of RSSI frame is not up to
First amount threshold, or/and, the quantity of the ACK frame received is not up to the second amount threshold, then when the timer expires, stops
Only timer, and RSSI threshold value is determined according to the greatest rssi value in the RSSI value measured.
Optionally, the present invention in one embodiment, in the above-mentioned RSSI value according to multiple target terminal most
Big RSSI value determines RSSI threshold value, may include:
The difference of the greatest rssi value and the first RSSI value adjusting parameter is determined as RSSI threshold value；Wherein, this first
RSSI value adjusting parameter is greater than 0.
In this embodiment, when AP, which is determined, meets the condition for determining RSSI threshold value, the target for such as having measured RSSI value is whole
The quantity at end reaches the first amount threshold, and the quantity of the ACK frame received reaches the second amount threshold, or, being up to when measurement
When to preset duration, AP can by the greatest rssi value measured and the first RSSI value adjusting parameter (can based on experience value or
Experiment value setting, such as 2dB, 3dB) difference be determined as RSSI threshold value.
Optionally, the present invention in one embodiment, in the above-mentioned RSSI value according to multiple target terminal most
Big RSSI value determines RSSI threshold value, may include:
The product of the greatest rssi value and the second RSSI value adjusting parameter is determined as RSSI threshold value；Wherein, the 2nd RSSI
It is worth adjusting parameter less than 1.
In this embodiment, when AP, which is determined, meets the condition for determining RSSI threshold value, the target for such as having measured RSSI value is whole
The quantity at end reaches the first amount threshold, and the quantity of the ACK frame received reaches the second amount threshold, or, being up to when measurement
When to preset duration, AP (can based on experience value or experiment by the greatest rssi value measured and the second RSSI value adjusting parameter
Value setting, such as 80%, 90%) product are determined as RSSI threshold value.
It,, can be with root after AP has determined RSSI threshold value in order to improve the accuracy of RSSI threshold value in the embodiment of the present invention
According to RSSI threshold value determined by environmental change adaptive updates, meet what preset triggering RSSI threshold value updated when AP is determined
When condition (referred to herein as RSSI threshold value update condition), AP can update identified RSSI threshold value.
Optionally, the present invention in one embodiment, it is above-mentioned when determine meet RSSI threshold value update condition when, update
Identified RSSI threshold value may include:
When measuring the first RSSI value greater than recorded greatest rssi value, recorded greatest rssi value is updated to this
First RSSI value；
According to first RSSI value, identified RSSI threshold value is updated.
In this embodiment, in order to improve the accuracy of RSSI threshold value, after AP has determined RSSI threshold value, when measuring mesh
When marking the RSSI value of terminal, on the one hand, the RSSI value and RSSI threshold value that AP is relatively measured, to carry out entering the mesh in specified region
Mark terminal statistics.
On the other hand, the greatest rssi value of AP is relatively measured RSSI value and self record；If measuring greater than itself
The RSSI value (referred to herein as the first RSSI value) of the greatest rssi value of record, then AP updates the greatest rssi value of self record
For first RSSI value, and identified RSSI threshold value is updated according to first RSSI value.
After RSSI threshold value updates, AP unites to the target terminal for entering specified region according to updated RSSI threshold value
Meter.
Optionally, the present invention in one embodiment, in the above-mentioned RSSI value according to multiple target terminal most
Big RSSI value determines RSSI threshold value, may include:
According to predetermined period, periodically according to the maximum in the RSSI value of the multiple target terminals measured in current period
RSSI value determines the RSSI threshold value used in current period；
It is above-mentioned when determine meet RSSI threshold value update condition when, update determined by RSSI threshold value, comprising:
In current period, according to the maximum RSSI in the RSSI value of the multiple target terminals measured in current period
Value, updates RSSI threshold value determined by the previous cycle of current period.
In this embodiment, it is contemplated that in practical applications, the position of the AP deployment in specified region may become
Change, and then the entrance that AP is measured specifies the size of RSSI value of the target terminal in region that can also change.
For example, by taking shop in market is in specified region as an example, it is assumed that when initial, AP is mounted on the position that do not blocked
It sets, and a certain moment, the AP are moved in ceiling, or are blocked by the shelf etc. in shop, it is clear that before a certain moment,
What the RSSI value for the target terminal into shop that AP is measured can integrally be measured higher than AP after a certain moment enters shop
The RSSI value of target terminal therefore, can if still count into shop using the RSSI threshold value determined before a certain moment
Can it is excessively high due to RSSI threshold value and cause will enter shop target terminal be judged to not entering shop.
Correspondingly, in this embodiment, a cycle (referred to herein as predetermined period, such as one week, one month are preset
Deng), AP determines the RSSI threshold value in different cycles according to the predetermined period respectively, and identified RSSI threshold value is in current period
It is interior effective.
For any period, AP is according to the maximum RSSI in the RSSI value of the multiple target terminals measured in current period
Value determines the RSSI threshold value used in current period.
For example, by taking predetermined period is one month as an example, for any moon, AP is described in embodiment according to the method described above
Mode determine RSSI threshold value, and within the moon, the target terminal for entering specified region is counted using the RSSI threshold value；
When entering lower January, mode described in embodiment determines RSSI threshold value according to the method described above again, and within the moon, uses
Newly determining RSSI threshold value counts the target terminal for entering specified region.
It correspondingly,, can after AP mode according to described in above-described embodiment has determined RSSI threshold value in current period
To update RSSI threshold value determined by the previous cycle (if present) of the current period according to the RSSI threshold value, i.e., using current week
The RSSI threshold value determined in phase counts the target terminal for entering specified region.
It should be noted that it is above-mentioned to determine that the mode of RSSI threshold value may refer in embodiments of the present invention, in each period
Associated description in embodiment of the method.When entering next period, before the RSSI threshold value in next period determines, Ke Yixian
The RSSI threshold value determined using a upper period counts the personnel for entering specified region；Alternatively, can also be according to above-mentioned elder generation
The RSSI threshold value for recording next period determines the RSSI value of the preceding each target terminal measured, and is determining next period
RSSI threshold value is made whether that the mode for entering the judgement in specified region is counted again after determining, specific implementation is not done herein
It repeats.
In order to make those skilled in the art more fully understand technical solution provided in an embodiment of the present invention, below with reference to specific
Example is illustrated technical solution provided in an embodiment of the present invention.
In this embodiment, using the visitor based on shop in wlan network realization market (shop in market is in i.e. specified region)
For stream statistics.
Fig. 2 is referred to, for WLAN wireless signal, the relationship and non-linear relation of RSSI value and distance.Such as Fig. 2 institute
Show, in the closer place in the position distance AP, RSSI value is big with the reduced amplitude of distance increase；The position distance AP farther awayly
Side, RSSI value are small with the reduced amplitude of distance increase.
In view of the multipath effect of electromagnetic transmission under indoor scene, in the farther away place in the position distance AP, RSSI value
Change substantially little.For example, RSSI value at 30 meters of distance AP is 25 and the RSSI value at 35 meters of distance AP may be still
It is so 25.But the RSSI value at 1 meter of distance AP is 70, and the RSSI value at 3 meters of distance AP is 60, i.e., stronger RSSI value tool
Have significantly apart from discrimination；And weaker RSSI value can not effectively distinguish distance, therefore, RSSI threshold value reasonably is arranged can
Accurately to judge whether the customer of carrying mobile phone terminal enters shop.
In practical application, the factor for influencing the RSSI value of the signal frame of AP receiving terminal apparatus transmission may include but unlimited
In the difference of the transmission power of the blocking of: signal, random fluctuation caused by multipath effect and terminal device different rates frame.Its
In:
Signal blocks factor: the AP in part shop is directly installed below ceiling or is not blocked on metallic conduit etc.
Position；And part shop AP is mounted on inside ceiling, there are signal blocks.Ceiling is larger to the influence of fading of signal, root
10dB or more is likely to be breached according to unlike material and thickness.It is not available clearly for this different types of shop same
RSSI threshold value, and the materials such as ceiling cannot achieve accurate assessment to the influence degree of signal, it is therefore, more quasi- in order to obtain
True threshold parameter needs to be tested in the actual environment of shop, to determine the size of RSSI threshold value.In addition, it is contemplated that shop
The position of the AP installed in paving may change, such as by being moved to inside ceiling under ceiling, or, the shelf in shop
Again putting causes AP signal to be blocked, and therefore, RSSI threshold value needs to adapt to the variation of environment.
Random fluctuation caused by multipath effect: multipath effect refers to that radio magnetic wave reaches reception by different paths
Machine, the same symbol is caused since path length is different in the time domain the more parts of different samples of time delay, according to wave crest and wave
The superposition of paddy, the random fluctuation in a certain range of final signal strength indication.Therefore, if using single frame RSSI value, just have
It is likely to occur since multipath effect influence causes RSSI value inaccurate, in turn, in the case where RSSI threshold value is not high, may make
At erroneous judgement.
The difference of the transmission power of terminal device different rates frame: for the same mobile phone terminal, different rates are sent
The corresponding transmission power of frame it is different.For example, the transmission power of the frame of low rate can achieve theoretical maximum power.And it is high
The transmission power of the frame of rate is usually less than theoretical maximum power.
In this embodiment, it is contemplated that the factor of the RSSI value for the signal frame that above-mentioned influence AP receiving terminal apparatus is sent,
It, can be multiple by being sent to terminal device when the RSSI value of AP measuring terminals equipment in order to improve into shop statistical accuracy
Frame is detected, ACK frame is responded with triggering terminal equipment, the rule of low rate transmission is fixed using ACK frame, based on what is received
The RSSI value of ACK frame measuring terminals equipment, to obtain the more accurately location RSSI；When determining RSSI threshold value, multiple terminals are measured
The RSSI value of equipment, and according to actual measurement to terminal device RSSI value in greatest rssi value determine RSSI threshold value, make
Identified RSSI threshold value more meets actual scene, and accuracy is higher,
In this embodiment, as follows into shop statistics realization process based on wlan network:
1, the initial value that Rmax (greatest rssi value) is arranged is 0；
2, when AP receives the signal frame of terminal device transmission, 10 are sent with constant rate of speed to the terminal device
NULL-DATA frame, and the RSSI value of the terminal device is measured based on the ACK frame received, it will be based on the multiple ACK frames received
The average value of the RSSI value of the terminal device measured is determined as the RSSI value of the terminal device；Record the terminal device
RSSI value, and compare the RSSI value and Rmax, if the RSSI value is greater than Rmax, Rmax is updated to the RSSI value；Otherwise, it protects
It is constant to hold Rmax；
3, step 2 is repeated, until the quantity of the terminal device of measurement reaches 10, frame (ACK frame) number received reaches
100, the difference of Rmax and the first RSSI value adjusting parameter (such as 5dB or 6dB) are determined as RSSI threshold value；
4, count into shop based on the RSSI threshold value determined in step 3, i.e., ought receive the signal of terminal device transmission
When frame, the RSSI value of the terminal device is measured by the way of in step 2, on the one hand, compare the RSSI value and RSSI threshold value, if
Greater than RSSI threshold value, it is determined that the customer for carrying the terminal device enters shop；On the other hand, compare the RSSI value and Rmax,
If more than Rmax, then Rmax is updated to the RSSI value, and RSSI threshold value is updated according to updated Rmax；
5, using in step 3 determine RSSI threshold value to determine RSSI threshold value before record terminal device RSSI value into
Traveling shop statistics, for any terminal equipment, if the RSSI value of the terminal device of record is greater than RSSI threshold value, it is determined that carry
The customer of the terminal device enters shop；
6, reach predetermined period (such as one month or one week), repeat step 1~5.
Through above description as can be seen that in technical solution provided in an embodiment of the present invention, by AP receive it is more
When the signal frame that a target terminal is sent, probe messages are sent to multiple target terminal, based on the multiple target received
The ACK frame of terminal measures the RSSI value of multiple target terminal, and according to the maximum in the RSSI value of multiple target terminal
RSSI value determines RSSI threshold value, when determination meets RSSI threshold value update condition, updates identified RSSI threshold value, in turn, root
The target terminal for entering specified region is counted according to identified RSSI threshold value, realizes automatically determining for RSSI threshold value,
Improve the efficiency of determining RSSI threshold value, and RSSI threshold value can when meeting update condition adaptive updates, improve RSSI
The accuracy of threshold value.
Fig. 3 is referred to, provides a kind of structural schematic diagram of information statistical device for the embodiment of the present invention, wherein the device
It can be applied to the AP in above method embodiment, as shown in figure 3, the information statistical device may include:
Receiving unit 310, the signal frame sent for receiving multiple target terminals；
Transmission unit 320, for receiving the signal frame that the multiple target terminal is sent when the receiving unit 310
When, detection frame is sent to the multiple target terminal；
Measuring unit 330, for receiving the ACK frame that the multiple target terminal is sent based on the receiving unit 310,
Measure the RSSI value of the multiple target terminal；
Determination unit 340 determines RSSI threshold for the greatest rssi value in the RSSI value according to the multiple target terminal
Value；
Updating unit 350, for updating identified RSSI threshold value when determination meets RSSI threshold value update condition；
Statistic unit 350, for being carried out according to identified RSSI threshold value to the target terminal for entering the specified region
Statistics.
In an alternative embodiment, the determination unit 340 reaches the specifically for the quantity when the multiple target terminal
One amount threshold, and when the quantity of frame that receives of the receiving unit 310 reaches the second amount threshold, according to the multiple mesh
The greatest rssi value marked in the RSSI value of terminal determines RSSI threshold value；Or, according in the RSSI value measured in preset duration
Greatest rssi value determine RSSI threshold value.
In an alternative embodiment, the determination unit 340 is specifically used for the greatest rssi value and the first RSSI value tune
The difference of whole parameter is determined as RSSI threshold value；Wherein, the first RSSI value adjusting parameter is greater than 0；Or, by the maximum RSSI
The product of value and the second RSSI value adjusting parameter is determined as RSSI threshold value；Wherein, the second RSSI value adjusting parameter is less than 1.
In an alternative embodiment, the updating unit 350, specifically for the first RSSI measured when the measuring unit
When value is greater than recorded greatest rssi value, the greatest rssi value recorded is updated to first RSSI value；
The determination unit 340 is also used to be updated the RSSI threshold value according to first RSSI value.
In an alternative embodiment, the determination unit 340 is specifically used for according to predetermined period, periodically according to current
Greatest rssi value in the RSSI value of the multiple target terminals measured in period determines the RSSI threshold value used in current period
The updating unit 350 is specifically used in current period, multiple according to what is measured in the current period
Greatest rssi value in the RSSI value of target terminal updates RSSI threshold value determined by the previous cycle of the current period.
Fig. 4 is referred to, is a kind of hardware structural diagram of information statistical device provided in an embodiment of the present invention.The information
Statistic device may include processor 401, the machine readable storage medium 402 for being stored with machine-executable instruction.Processor 401
It can be communicated via system bus 403 with machine readable storage medium 402.Also, by reading and executing machine readable storage Jie
Above-described Information Statistics side can be performed in machine-executable instruction corresponding with Information Statistics logic, processor 401 in matter 402
Method.
Machine readable storage medium 402 referred to herein can be any electronics, magnetism, optics or other physical stores
Device may include or store information, such as executable instruction, data, etc..For example, machine readable storage medium can be easily
Lose memory, nonvolatile memory or similar storage medium.Specifically, machine readable storage medium 402 can be RAM
(Radom Access Memory, random access memory), flash memory, memory driver (such as hard disk drive), solid state hard disk,
Any kind of storage dish (such as CD, DVD) perhaps similar storage medium or their combination.
The embodiment of the invention also provides a kind of machine readable storage mediums including machine-executable instruction, such as Fig. 4
In machine readable storage medium 402, the machine-executable instruction can by the processor 401 in information statistical device execute with
Realize information described above statistical method.
The function of each unit and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
The purpose for needing to select some or all of the modules therein to realize the present invention program.Those of ordinary skill in the art are not paying
Out in the case where creative work, it can understand and implement.
As seen from the above-described embodiment, through AP when receiving the signal frame that multiple target terminals are sent, to multiple mesh
It marks terminal and sends probe messages, the ACK frame based on the multiple target terminal received measures the RSSI of multiple target terminal
Value, and RSSI threshold value is determined according to the greatest rssi value in the RSSI value of multiple target terminal, when determination meets RSSI threshold value
When update condition, identified RSSI threshold value is updated, in turn, according to identified RSSI threshold value to the target for entering specified region
Terminal is counted, and automatically determining for RSSI threshold value is realized, and improves the efficiency of determining RSSI threshold value, and RSSI threshold value can be with
The adaptive updates when meeting update condition improve the accuracy of RSSI threshold value.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (10)
1. a kind of information statistical method, the access point AP applied to specified deployed in areas, which is characterized in that the method packet
It includes:
When receiving the signal frame that multiple target terminals are sent, detection frame is sent to the multiple target terminal；
Based on the confirmation ACK frame that the multiple target terminal received is sent, the RSSI value of the multiple target terminal is measured；
RSSI threshold value is determined according to the greatest rssi value in the RSSI value of the multiple target terminal, and when determination meets RSSI threshold
When being worth update condition, identified RSSI threshold value is updated；
According to identified RSSI threshold value, the target terminal for entering the specified region is counted.
2. the method according to claim 1, wherein in the RSSI value according to the multiple target terminal
Greatest rssi value determines RSSI threshold value, comprising:
When the quantity of the multiple target terminal reaches the first amount threshold, and the quantity of the ACK frame received reaches the second number
When measuring threshold value, RSSI threshold value is determined according to the greatest rssi value in the RSSI value of the multiple target terminal；
Or,
RSSI threshold value is determined according to the greatest rssi value in the RSSI value of the multiple target terminals measured in preset duration.
3. method according to claim 1 or 2, which is characterized in that the RSSI value according to the multiple target terminal
In greatest rssi value determine RSSI threshold value, comprising:
The difference of the greatest rssi value and the first RSSI value adjusting parameter is determined as RSSI threshold value；Wherein, described first
RSSI value adjusting parameter is greater than 0；
Or,
The product of the greatest rssi value and the second RSSI value adjusting parameter is determined as RSSI threshold value；Wherein, the 2nd RSSI
It is worth adjusting parameter less than 1.
4. the method according to claim 1, wherein it is described when determine meet RSSI threshold value update condition when, more
RSSI threshold value determined by new, comprising:
When the first RSSI value measured is greater than recorded greatest rssi value, the greatest rssi value recorded is updated to institute
State the first RSSI value；
According to first RSSI value, the RSSI threshold value is updated.
5. the method according to claim 1, wherein in the RSSI value according to the multiple target terminal
Greatest rssi value determines RSSI threshold value, comprising:
According to predetermined period, periodically according to the maximum in the RSSI value of the multiple target terminals measured in current period
RSSI value determines the RSSI threshold value used in current period；
It is described when determine meet RSSI threshold value update condition when, update determined by RSSI threshold value, comprising:
In current period, according to the maximum RSSI in the RSSI value of the multiple target terminals measured in the current period
Value, updates RSSI threshold value determined by the previous cycle of the current period.
6. a kind of information statistical device, applied to the WLAN WLAN access point AP of specified deployed in areas, feature exists
In described device includes:
Receiving unit, the signal frame sent for receiving multiple target terminals；
Transmission unit, for when the receiving unit receives the signal frame that the multiple target terminal is sent, to described more
A target terminal sends detection frame；
Measuring unit, the confirmation ACK frame that the multiple target terminal for being also used to be received based on the receiving unit is sent are surveyed
Measure the RSSI value of the multiple target terminal；
Determination unit determines RSSI threshold value for the greatest rssi value in the RSSI value according to the multiple target terminal；
Updating unit, for updating identified RSSI threshold value when determination meets RSSI threshold value update condition；
Statistic unit, for being counted to the target terminal for entering the specified region according to identified RSSI threshold value.
7. device according to claim 6, which is characterized in that
The determination unit reaches the first amount threshold, and the reception specifically for the quantity when the multiple target terminal
When the quantity for the ACK frame that unit receives reaches the second amount threshold, according in the RSSI value of the multiple target terminal most
Big RSSI value determines RSSI threshold value；Or, determining RSSI according to the greatest rssi value in the RSSI value measured in preset duration
Threshold value.
8. device according to claim 6 or 7, which is characterized in that
The determination unit, specifically for the difference of the greatest rssi value and the first RSSI value adjusting parameter is determined as RSSI
Threshold value；Wherein, the first RSSI value adjusting parameter is greater than 0；Or, by the greatest rssi value and the second RSSI value adjusting parameter
Product be determined as RSSI threshold value；Wherein, the second RSSI value adjusting parameter is less than 1.
9. device according to claim 6, which is characterized in that
The updating unit is greater than the maximum RSSI recorded specifically for the first RSSI value measured when the measuring unit
When value, the greatest rssi value recorded is updated to first RSSI value；
The determination unit is also used to be updated the RSSI threshold value according to first RSSI value.
10. device according to claim 6, which is characterized in that
The determination unit is specifically used for according to predetermined period, periodically according to the multiple targets measured in current period
Greatest rssi value in the RSSI value of terminal determines the RSSI threshold value used in current period；
The updating unit is specifically used in current period, whole according to the multiple targets measured in the current period
Greatest rssi value in the RSSI value at end updates RSSI threshold value determined by the previous cycle of the current period.
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