CN106358155B - A kind of method for building up and device of radio-frequency fingerprint database - Google Patents
A kind of method for building up and device of radio-frequency fingerprint database Download PDFInfo
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- CN106358155B CN106358155B CN201610821551.3A CN201610821551A CN106358155B CN 106358155 B CN106358155 B CN 106358155B CN 201610821551 A CN201610821551 A CN 201610821551A CN 106358155 B CN106358155 B CN 106358155B
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- H04W4/043—
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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
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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Abstract
The present invention discloses the method for building up and device of a kind of radio-frequency fingerprint database, this method comprises: for any one reference location point in target area, according to the mapping relations of the logical number of the wireless access point pre-established and physical label, the corresponding physical label of logical number for each wireless access point that terminal is accessed in the reference location point is determined；The wireless signal measurements for each wireless access point that terminal is accessed in the reference location point and the physical label determined are as the radio signal characteristics of the reference location point；Establish the corresponding relationship between the coordinate of the reference location point and the radio signal characteristics of reference location point, and the radio-frequency fingerprint database of the corresponding relationship comprising at least one reference location point is generated, it is low to solve the problems, such as positioning accuracy exists in the prior art.
Description
Technical field
The present invention relates to the communications field more particularly to a kind of method for building up and device of radio-frequency fingerprint database.
Background technique
Currently, the location technology of terminal increasingly attracts much attention in mobile communications network, based on location-based service
Using flourishing, different social sectors, such as navigation Service, location push and association search, big data row are penetrated into
For etc..In data age, will be cut a conspicuous figure by the derivative various information service come of location information, this will further highlight positioning
The importance of technology.
Location technology can be divided into three classes from method: the location technology based on triangle relation, positioning based on scene analysis
Technology, the location technology based on the relationship of closing on.Field strength fingerprint technique is as the one kind for closing on relationship location technology, and positioning is answered indoors
In, it is widely used since its positioning accuracy is high.
Based on the location technology of field strength fingerprint technique, basic principle are as follows: pass through measurement wireless access point to terminal to be positioned
Power is received then to do absolutely with radio-frequency fingerprint database alternatively, measuring terminal to be positioned to the reception power of wireless access point
Power match finds several reference coordinates of minimum Eustachian distance, does ranking operation to reference coordinate and obtains accurate positioning coordinate.
Wherein, the establishment process of radio-frequency fingerprint database is specifically, in target environment, manually to calibrate some specific positions
It sets, these positions are referred to as reference location point, and the coordinate of these reference location points is it is known that the coordinate of reference location point is denoted as
(x,y).On each reference location point, mobile terminal sampling is formed from multiple signal strengths for closing on wireless access point
One one-dimensional vector, and it is associated with the coordinate of the reference location point, the fingerprint of the reference location point is formed, by all with reference to fixed
As soon as the fingerprint in site is stored in a database, radio-frequency fingerprint database is constituted.The fingerprint of one reference location point can be with
It is indicated with following formula:
{ (x, y), (RSSI0, RSSI1 ..., RSSIN) } ... ... formula [1]
Wherein (x, y) is the coordinate of reference location point, and RSSI0 is the reception signal that mobile terminal corresponds to wireless access point 0
Intensity value, RSSI1 are the received signal strength indication that mobile terminal corresponds to wireless access point 1, and RSSIN is that mobile terminal is corresponding wireless
The received signal strength indication of access point N.
For room subsystem, as shown in Figure 1, the room subsystem is indicated with cell ID CELL ID0, for room subsystem
Interior each RRU (Radio Remote Unit, Remote Radio Unit), adds the logical number of RRU to be marked using CELL ID0
Know, for example, in CELL ID0+RRU0, Fig. 1 terminal 0 at the T0 moment respectively in the signal strength indication of RRU6, RRU7, RRU3, RRU9
Terminal 0 is constituted in T0 moment characteristic signal, this feature signal and radio-frequency fingerprint database are done into absolute power match, found most
Several reference coordinates of small Euclidean distance, doing ranking operation to reference coordinate can be obtained by terminal 0 in the physical bit at T0 moment
It sets.
But because covering form is more, and room subsystem often needs to adjust, and usually passes through at this time as business development changes
Cell splitting carrys out optimizing capacity covering, for as shown in Figure 2 after the room subsystem progress cell splitting in Fig. 1, it is seen that originally
The wireless access point RRU6 to RRU11 for belonging to CELL ID0 becomes to belong under emerging CELL ID1 after cell splitting
Wireless access point RRU0 to RRU5, after division caused by as a result, because every in pre-generated radio-frequency fingerprint database
The coordinate of the reference location point of a fingerprint is, division after end corresponding with the signal strength indication of the RRU of original logical number
Signal strength indication of the end 0 in the T1 moment RRU3 at CELL ID1 under RRU0, RRU1, RRU3 and CELL ID0 respectively constitutes
Terminal 0 carries out absolute power matching in T1 moment characteristic signal, by this feature signal and pre-generated radio-frequency fingerprint database
When, because the characteristic signal generated after the logical number and terminal division in RRU radio-frequency fingerprint database is inconsistent, lead to small differentiation
Terminal 0 can not be oriented after splitting in the physical location at T1 moment, therefore the feelings that existing localization method is divided in cell
There is a problem of positioning coordinate inaccuracy under condition.
Summary of the invention
The embodiment of the present invention provides the method for building up and device of a kind of radio-frequency fingerprint database, to solve in the prior art
There is a problem of that positioning accuracy is low.
The method of the present invention includes a kind of method for building up of radio-frequency fingerprint database, this method comprises: in target area
Any one reference location point, according to the mapping relations of the logical number of the wireless access point pre-established and physical label,
Determine the corresponding physical label of logical number for each wireless access point that terminal is accessed in the reference location point；
The wireless signal measurements and determining object for each wireless access point that terminal is accessed in the reference location point
Radio signal characteristics of the reason mark as the reference location point；
The corresponding relationship between the coordinate of the reference location point and the radio signal characteristics of reference location point is established,
And generate the radio-frequency fingerprint database of the corresponding relationship comprising at least one reference location point.
Based on same inventive concept, the embodiment of the present invention further provides a kind of foundation dress of radio-frequency fingerprint database
It sets, which includes:
Determination unit, for wirelessly being connect according to what is pre-established for any one reference location point in target area
The logical number of access point and the mapping relations of physical label determine each wireless access that terminal is accessed in the reference location point
The corresponding physical label of logical number of point；
Processing unit, the wireless signal measurement of each wireless access point for accessing terminal in the reference location point
The radio signal characteristics of value and the physical label determined as the reference location point；
Generation unit, for establish the reference location point coordinate and reference location point radio signal characteristics it
Between corresponding relationship, and generate comprising at least one reference location point corresponding relationship radio-frequency fingerprint database.
The embodiment of the present invention considers patrolling for existing wireless access point by the method for building up of improvement radio-frequency fingerprint database
The problem of repeating may be led to because of the change of wireless networking form by collecting number, and the embodiment of the present invention is establishing radio-frequency fingerprint number
According to original logical number is replaced when library with the physical label of wireless access point, the nothing of each reference location point formed in this way
Line signal characteristic just includes the physical label of wireless access point and the wireless signal measurements of wireless access point, because of wireless access
The physical label of point is unique, so changing even if wireless networking form is subsequent in wireless area, generates by this method
Fingerprint database stand good subsequent position fixing process, to ensure that the accuracy of positioning coordinate.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of cell networking form schematic diagram one of the prior art；
Fig. 2 is the cell networking form schematic diagram two after a kind of division of the prior art；
Fig. 3 is the system architecture schematic diagram that the embodiment of the present invention is applicable in；
Fig. 4 is a kind of method for building up flow diagram of radio-frequency fingerprint database provided in an embodiment of the present invention；
Fig. 5 is a kind of localization method topology schematic diagram provided in an embodiment of the present invention；
Fig. 6 is that a kind of radio-frequency fingerprint database provided in an embodiment of the present invention establishes device flow diagram.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that the described embodiments are only some of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
The embodiment of the present invention is suitable for the terminal positioning under several scenes, such as terminal positioning, the cell of multi-cell coordination
Interior terminal positioning etc., the embodiment of the present invention to applicable scene with no restrictions.Preferably, the embodiment of the present invention is particularly suitable for small
Terminal positioning in area.It is applied to the terminal positioning in cell using the embodiment of the present invention in subsequent embodiment to be situated between as scene
It continues.
As shown in figure 3, the system architecture schematic diagram that the embodiment of the present invention is applicable.It include the network equipment in the system architecture
101, one or more wireless access point, one or more terminals, such as the first wireless access point shown in Fig. 3 1031, second
Wireless access point 1032, third wireless access point 1033, first terminal 104, second terminal 105, third terminal 106.Network is set
Standby 101 are connect by network 102 with wireless access point.All wireless access point can realize wireless telecommunications with the network equipment 101,
I.e. between wireless access point and the network equipment 101 information can be transmitted by the method for wireless transmission.First wireless access point 1031,
Second wireless access point 1032 and third wireless access point 1033 can receive first terminal 104, second terminal 105 and
The transmitting signal of three terminals 106.
In the embodiment of the present invention, wireless access point, which is laid in, to be needed to carry out in localization region, due to single wireless access point
Limited coverage area, in order to improve the precision of positioning, it is preferable that settable multiple wireless access point, for example, working as localization region
When for outdoor large range of region, at interval of tens meters of settings, one wireless access point, when localization region is the smaller model in interior
When the region enclosed, chummery is not respectively provided with a wireless access point to different direction indoors.
Terminal in the embodiment of the present invention can be the terminals such as mobile phone terminal, PC terminal, tablet terminal.In the embodiment of the present invention
Terminal can be to be multiple, the terminal to be positioned in the embodiment of the present invention specifically refers to the terminal for needing to position, and terminal to be positioned is
Any one or more in the corresponding terminal of the received signal strength that wireless access point reports.Wirelessly connecing in the embodiment of the present invention
Access point (Access Point, abbreviation AP) is wireless access point for positioning, the wireless access point can periodic scan, or
Signal transmitted by real time scan terminal.
Fig. 4 is process signal corresponding to a kind of method for building up of radio-frequency fingerprint database provided in an embodiment of the present invention
Figure, this method comprises:
Step 201, for any one reference location point in target area, according to the wireless access point pre-established
The mapping relations of logical number and physical label determine patrolling for each wireless access point that terminal is accessed in the reference location point
Collect the corresponding physical label of number；
Step 202, the wireless signal measurements of each wireless access point terminal accessed in the reference location point and
Radio signal characteristics of the determining physical label as the reference location point；
Step 203, it establishes between the coordinate of the reference location point and the radio signal characteristics of reference location point
Corresponding relationship, and generate the radio-frequency fingerprint database of the corresponding relationship comprising at least one reference location point.
It should be noted that the physical label of wireless access point has uniqueness, generally, the physical label of wireless access point
It is commonly referred to as the device numbering or physical address of wireless access point, such as the corresponding global equipment identification of wireless access point
MAC (Medium Access Control, media access control) address of code, wireless access point.
Before executing step 201, need to obtain the wireless access point in target area powers on registration information；According to institute
It states and powers on the mapping pass that registration information establishes the logical number of each wireless access point and the physical label of each wireless access point
System.
Such as the network overlay system of the cell CELL ID0 of Fig. 1 be by a Base Band Unit, two expanding elements,
12 Remote Radio Unit composition, 12 Remote Radio Unit are followed successively by Remote Radio Unit 0 in the logical number of this cell, penetrate
Frequency extension unit 1 ..., Remote Radio Unit 11 etc..When network overlay system electrifying startup in cell CELL ID0, so that it may
Registration information is powered on according to each Remote Radio Unit in cell, determines the device numbering of each Remote Radio Unit, so
The logical number of each Remote Radio Unit and the corresponding relationship of device numbering are generated afterwards, as shown in following table one.
Table one:
| Wireless access point logical number | Wireless access point device number |
| RRU0 | 000 |
| RRU1 | 111 |
| RRU2 | 222 |
| … | … |
| RRU11 | 0b0 |
After the physical label for obtaining wireless access point according to the method described above, it is also necessary to determine N number of reference in target area
Anchor point and the corresponding coordinate of N number of reference location point, N is positive integer, and then acquisition terminal connects in each reference location point
The wireless signal measurements of each wireless access point entered.Such as a ginseng is demarcated in each room of every floor in Fig. 1
Anchor point is examined, and demarcates coordinate for each reference location point.When position in Fig. 1 of user terminal 0 in Fig. 1, it can receive
To RRU6 and RRU7, RRU9 and RRU3 wireless signal, corresponding each RRU has a received signal strength indication, according in table one
Corresponding relationship can determine RRU6 and RRU7, RRU9 and the corresponding physical label of RRU3, and then use can be generated
The radio signal characteristics of the position in Fig. 1 of family terminal 0, the radio signal characteristics just include RRU6 and RRU7, RRU9 and RRU3
Received signal strength indication and RRU6 and RRU7, RRU9 and the corresponding physical label of RRU3.Pass through the above method, so that it may
To generate the radio-frequency fingerprint database of Fig. 1, in the radio-frequency fingerprint database comprising calibration 12 reference location points coordinate and
The corresponding relationship of radio signal characteristics, as shown in Table 2, wherein the RSSI in table two refers to received signal strength indication.
Table two:
| Reference location point coordinate | Radio signal characteristics |
| Reference location point 0 (x1, y1) | RSSI_000, RSSI_111 |
| Reference location point 1 (x2, y2) | RSSI_111, RSSI_222 |
| Reference location point 2 (x3, y3) | RSSI_222, RSSI_333 |
| … | … |
| Reference location point 11 (x12, y12) | RSSI_0a0, RSSI_0b0 |
Further, after generating radio-frequency fingerprint database according to the method described above, so that it may utilize the letter in the library
Breath, positions the terminal in target area, specifically, receives the locating request message that terminal to be positioned is sent, described fixed
The fingerprint characteristic generated in the request message of position comprising the terminal to be positioned, the fingerprint characteristic includes that the terminal to be positioned connects
The physical label of the wireless access point entered and wireless signal measurements relevant to the physical label；
The radio signal characteristics of each reference location point in the fingerprint characteristic and the radio-frequency fingerprint database are carried out
Matching, and the coordinate for the reference location point that matching is obtained is as the positioning coordinate of the terminal to be positioned.
The present invention is explained with specific embodiment below.
As shown in figure 5, being a kind of localization method topology schematic diagram provided in an embodiment of the present invention.Assuming that a cell is by nothing
Line access point 0, wireless access point 1, wireless access point 2 cooperate with the covering for completing the cell, and each wireless access point is responsible for reception
Baseband signal simultaneously completes downlink, while receiving uplink signal, and signal return is handled to Base Band Unit.In Fig. 5,
Horizontal axis X and vertical pivot Y collectively forms a reference frame, and in reference frame, the point that dotted line intersects is reference location point, to
Auxiliary positioning.The received signal strength indication of relevant to each reference location point coordinate and access point is stored in fingerprint database
Corresponding relationship, it is specific as shown in Table 1 above.
It include terminal 1, terminal 2 in Fig. 5, now to be illustrated for determining the location information of terminal 2.
It is directed to terminal 2, in a locating periodically, wireless access point 0, wireless access point 1 is obtained first and wirelessly connects
The obtained received signal strength of transmitting signal (i.e. reception power) that access point 2 passes through reception terminal 2, it is assumed that be respectively wirelessly to connect
The reception power of access point 0 is 10, the reception power of wireless access point 1 is 7.2, the reception power of wireless access point 2 is 5.3, false
If finding matched information such as table three from radio-frequency fingerprint database, therefore by the coordinate value of reference location point { 1,3 } conduct
The terminal positions coordinate in the locating periodically.
Table three:
Further, it according to the fingerprint characteristic, is matched in the radio-frequency fingerprint database, and is tied according to matching
Fruit obtains the radio signal characteristics of 1 reference location points from the radio-frequency fingerprint database；
The coordinate of the corresponding reference location point of the radio signal characteristics of at least two reference locations point is carried out
Weighted calculation determines the positioning coordinate of the terminal to be positioned.
Example in connecting, that is to say, that, it is assumed that matched information such as table four is found from radio-frequency fingerprint database, therefore will
The coordinate value { 1,3 } of reference location point and the coordinate value { 1,4 } of reference location point be weighted to obtain coordinate value 1,
3.5 }, which is positioned into coordinate in the locating periodically as the terminal.
Table four:
It should be noted that the signal that the wireless signal measurements in radio-frequency fingerprint database can be wireless access point connects
Enter intensity, is also possible to that (Timing Advance, time mention with AOA (Angle of Arrival, channel angle of arrival) and TA
Preceding amount) relevant value, if signal accesses intensity, so that it may acquire the access signal strength of terminal to be positioned in position fixing process
Then value utilizes field strength fingerprint location method, is positioned in conjunction with radio-frequency fingerprint database, if value relevant to AOA and TA, then
It can be positioned according to AOA and TA positioning mode in conjunction with radio-frequency fingerprint database, so, the embodiment of the present invention does not limit
The localization method of positioning terminal is treated after generating radio-frequency fingerprint database, existing a variety of localization methods can be with this
Radio-frequency fingerprint database combination uses in inventive embodiments.
In order to more vividly describe the establishment process of above-mentioned radio-frequency fingerprint database, the embodiment of the present invention by provide as
Lower scene is described in detail, specific as follows:
As shown in Figure 1, it is assumed that wireless signal measurements are RSSI (Received Signal Strength
Indication receives power level), if at the T0 moment, user terminal 0 is located at the intersection of RRU6 and RRU7, at this point, energy
The RRU for measuring user terminal 0 includes RRU6 (666), RRU7 (777), RRU3 (333), RRU9 (999), wherein 666,777,
333,999 for RRU in cell device numbering, obtain wireless signal measurements of the user terminal 0 based on RRU 6 at the T0 moment
The wireless communication of wireless signal measurements RSSI_777, user terminal 0 based on RRU3 of RSSI_666, user terminal 0 based on RRU 7
Number measured value RSSI_333, wireless signal measurements RSSI_999 of the user terminal 0 based on RRU 9.User terminal 0 accesses each
The wireless signal measurements of a RRU are sent as locating request message, then utilize wireless signal in locating request message
Measured value finds reference location point the most matched from radio-frequency fingerprint database, so that it may which the positioning for obtaining user terminal 0 is sat
It marks.
Assuming that at the T1 moment, a cell splitting is two cells (as shown in Figure 2) in Fig. 1, due to cell splitting front and back,
The device numbering of 12 RRU is still constant, therefore, after cell splitting, it is assumed that user terminal 0 the T1 moment access be still
This several equipment of RRU6, RRU7, RRU3, RRU9, although after cell splitting, in original image 1 CELL ID be 0 RRU6, RRU7,
The logical number of RRU9 become CELL ID1 under RRU0, RRU1, RRU3, but because original RRU6, RRU7, RRU9 being set
Standby number be it is unique constant, so the received signal strength indication for these RRU that user terminal 0 accesses in the position is still
It is corresponding with the device numbering of these RRU, i.e., the nothing for the RRU3 that user terminal 0 accesses in CELL ID 0 is obtained at the T1 moment
The wireless signal measurements RSSI_666 of RRU 0 in line signal measurements RSSI_333, the access of user terminal 0 CELL ID 1,
User terminal 0 accesses the wireless signal measurements RSSI_777 of the RRU 1 in CELL ID 1, user terminal 0 accesses CELL ID
The wireless signal measurements RSSI_999 of RRU3 in 1, the wireless signal measurements conduct for each RRU that user terminal 0 accesses
Locating request message is sent, and is then looked for from radio-frequency fingerprint database using wireless signal measurements in locating request message
To reference location point the most matched, so that it may obtain the positioning coordinate of user terminal 0.As it can be seen that through the embodiment of the present invention
The method for building up of the radio-frequency fingerprint database of offer can solve because cell networking form changes, lead to wireless access point
It the problem of logical number entanglement, can after receiving the Location Request of terminal to be positioned by this database building method
To realize positioning, does not have to again maintaining radio fingerprint database again, improve O&M efficiency.
So using method provided in an embodiment of the present invention, by by the logical number and wireless access point of wireless access point
Physical label carry out mapping both meet cell so that the radio characteristics signal in database is not influenced by cell networking
Terminal positioning when first networking form, and the terminal positioning for the new networking form such as adapt to cell splitting, application scenarios are wide,
Scheme strong applicability has higher O&M efficiency.
Based on the same technical idea, what the embodiment of the present invention also provided a kind of radio-frequency fingerprint database establishes device, should
Above method embodiment can be performed in device.Device provided in an embodiment of the present invention is as shown in fig. 6, comprise determining that unit 401, place
Unit 402, generation unit 403 are managed, mapping relations establish unit 404, positioning unit 405, in which:
Determination unit 401, any one reference location point for being directed in target area is wireless according to what is pre-established
The logical number of access point and the mapping relations of physical label determine that terminal each of is accessed in the reference location point and wirelessly connect
The corresponding physical label of the logical number of access point；
Processing unit 402, the wireless signal of each wireless access point for accessing terminal in the reference location point
The radio signal characteristics of measured value and the physical label determined as the reference location point；
Generation unit 403, for establishing the coordinate of the reference location point and the wireless signal spy of reference location point
Corresponding relationship between sign, and generate the radio-frequency fingerprint database of the corresponding relationship comprising at least one reference location point.
It should be noted that the physical label information of the wireless access point includes the corresponding global equipment of wireless access point
Identification code, wireless access point MAC Address in any one.
Further, the determination unit 401 is also used to determine N number of reference location point and N number of ginseng in target area
The corresponding coordinate of anchor point is examined, N is positive integer.
Further, described device further include: mapping relations establish unit 404, for obtaining in the target area
Wireless access point powers on registration information；The logical number of each wireless access point and every is established according to the registration information that powers on
The mapping relations of the physical label of a wireless access point.
Further, further includes: positioning unit 405, the locating request message sent for receiving terminal to be positioned are described
The fingerprint characteristic generated in locating request message comprising the terminal to be positioned, the fingerprint characteristic includes the terminal to be positioned
The physical label of the wireless access point of access and wireless signal measurements relevant to the physical label；By the fingerprint characteristic
The reference for being matched with the radio signal characteristics of reference location point each in the radio-frequency fingerprint database, and matching being obtained
Positioning coordinate of the coordinate of anchor point as the terminal to be positioned.
Further, the positioning unit 405 is specifically used for: according to the fingerprint characteristic, in the radio-frequency fingerprint data
It is matched in library, and obtains the wireless of 1 reference location points from the radio-frequency fingerprint database according to matching result
Signal characteristic；The coordinate of the corresponding reference location point of the radio signal characteristics of at least two reference locations point is carried out
Weighted calculation determines the positioning coordinate of the terminal to be positioned.
In conclusion method for building up of the embodiment of the present invention by improvement radio-frequency fingerprint database, considers existing wireless
The logical number of access point may lead to the problem of repeating because of the change of wireless networking form, and the embodiment of the present invention is being established
Original logical number is replaced when radio-frequency fingerprint database with the physical label of wireless access point, each reference formed in this way
The radio signal characteristics of anchor point just include the physical label of wireless access point and the wireless signal measurements of wireless access point, because
It is unique for the physical label of wireless access point, so changing even if wireless networking form is subsequent in wireless area, pass through this
The fingerprint database that kind of method generates stands good subsequent position fixing process, to ensure that the accuracy of positioning coordinate.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of method for building up of radio-frequency fingerprint database, which is characterized in that this method comprises:
For the reference location point in target area, according to the logical number of the wireless access point pre-established and physical label
Mapping relations determine the corresponding physics mark of logical number for each wireless access point that terminal is accessed in the reference location point
Know；
The wireless signal measurements and determining physics mark for each wireless access point that terminal is accessed in the reference location point
Know the radio signal characteristics as the reference location point；
The corresponding relationship between the coordinate of the reference location point and the radio signal characteristics of reference location point is established, and raw
At the radio-frequency fingerprint database of the corresponding relationship comprising the reference location point.
2. the method for building up of radio-frequency fingerprint database as described in claim 1, which is characterized in that the determining terminal is described
Before the corresponding physical label of logical number of each wireless access point of reference location point access, further includes:
N number of reference location point and the corresponding coordinate of N number of reference location point are determined in target area, and N is positive integer；
Obtain the wireless access point in the target area powers on registration information；
According to the physics mark for powering on registration information and establishing the logical number and each wireless access point of each wireless access point
The mapping relations of knowledge.
3. the method for building up of radio-frequency fingerprint database as described in claim 1, which is characterized in that described to generate the target area
After the radio-frequency fingerprint database in domain, further includes:
The positioning signal that terminal to be positioned is sent is received, the fingerprint characteristic of the terminal to be positioned, the fingerprint characteristic packet are obtained
The physical label and the wireless signal relevant to the physical label for including the wireless access point of the terminal access to be positioned are surveyed
Magnitude；
The fingerprint characteristic is matched with the radio signal characteristics of reference location point each in the radio-frequency fingerprint database,
And the coordinate for the reference location point for obtaining matching is as the positioning coordinate of the terminal to be positioned.
4. the method for building up of radio-frequency fingerprint database as claimed in claim 3, which is characterized in that described by the fingerprint characteristic
The reference for being matched with the radio signal characteristics of reference location point each in the radio-frequency fingerprint database, and matching being obtained
Positioning coordinate of the coordinate of anchor point as the terminal to be positioned, comprising:
It according to the fingerprint characteristic, is matched in the radio-frequency fingerprint database, and according to matching result from the radio frequency
The radio signal characteristics of 1 reference location points are obtained in fingerprint database；
The coordinate of the corresponding reference location point of the radio signal characteristics of at least two reference locations point is weighted
It calculates, determines the positioning coordinate of the terminal to be positioned.
5. such as the method for building up of the described in any item radio-frequency fingerprint databases of Claims 1-4, which is characterized in that described wireless
The physical label information of access point includes the MAC Address of the corresponding global EIC equipment identification code of wireless access point, wireless access point.
6. a kind of radio-frequency fingerprint database establishes device, which is characterized in that the device includes:
Determination unit, for being compiled according to the logic of the wireless access point pre-established for the reference location point in target area
Mapping relations number with physical label, determine the logical number for each wireless access point that terminal is accessed in the reference location point
Corresponding physical label；
Processing unit, the wireless signal measurements of each wireless access point for accessing terminal in the reference location point and
Radio signal characteristics of the determining physical label as the reference location point；
Generation unit, for establishing between the coordinate of the reference location point and the radio signal characteristics of reference location point
Corresponding relationship, and generate the radio-frequency fingerprint database of the corresponding relationship comprising the reference location point.
7. radio-frequency fingerprint database as claimed in claim 6 establishes device, which is characterized in that the determination unit is also used
In determining N number of reference location point and the corresponding coordinate of N number of reference location point in target area, N is positive integer；
Described device further include:
Mapping relations establish unit, power on registration information for obtain the wireless access point in the target area；According to institute
It states and powers on the mapping pass that registration information establishes the logical number of each wireless access point and the physical label of each wireless access point
System.
8. radio-frequency fingerprint database as claimed in claim 6 establishes device, which is characterized in that further include:
Positioning unit, the positioning signal sent for receiving terminal to be positioned, obtains the fingerprint characteristic of the terminal to be positioned, institute
State the physical label of the wireless access point that fingerprint characteristic includes the terminal to be positioned access and relevant to the physical label
Wireless signal measurements；By the wireless signal of each reference location point in the fingerprint characteristic and the radio-frequency fingerprint database
Feature is matched, and the coordinate for the reference location point that matching is obtained is as the positioning coordinate of the terminal to be positioned.
9. radio-frequency fingerprint database as claimed in claim 8 establishes device, which is characterized in that the positioning unit is specifically used
In: it according to the fingerprint characteristic, is matched in the radio-frequency fingerprint database, and is referred to according to matching result from the radio frequency
The radio signal characteristics of 1 reference location points are obtained in line database；By the wireless of at least two reference locations point
The coordinate of the corresponding reference location point of signal characteristic is weighted, and determines the positioning coordinate of the terminal to be positioned.
10. establishing device such as the described in any item radio-frequency fingerprint databases of claim 6 to 9, which is characterized in that described wireless
The physical label information of access point includes the MAC Address of the corresponding global EIC equipment identification code of wireless access point, wireless access point.
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| CN108924732B (en) * | 2017-04-26 | 2020-12-11 | 中国移动通信集团设计院有限公司 | High-speed rail user equipment positioning method and device |
| CN109640336B (en) * | 2017-09-30 | 2020-09-11 | 上海华为技术有限公司 | Radio frequency head end positioning method, radio frequency head end positioning system and computer medium |
| CN109996177A (en) * | 2017-12-29 | 2019-07-09 | 上海共联通信信息发展有限公司 | WiFi positioning device and method in a kind of remote chamber |
| CN111829519A (en) * | 2019-05-29 | 2020-10-27 | 北京骑胜科技有限公司 | Positioning method, positioning device, electronic equipment and storage medium |
| CN111328016A (en) * | 2020-02-12 | 2020-06-23 | 深圳数位传媒科技有限公司 | Method for intelligently monitoring positions of isolated personnel and monitoring terminal |
| CN113949986B (en) * | 2021-08-11 | 2024-03-29 | 厦门大学 | Positioning method, positioning system and monitoring method based on WR (Wireless Fidelity) and RF (radio frequency) fingerprint technology |
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