CN104301997A - Server, mobile terminal, system and positioning method - Google Patents
Server, mobile terminal, system and positioning method Download PDFInfo
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- CN104301997A CN104301997A CN201410491001.0A CN201410491001A CN104301997A CN 104301997 A CN104301997 A CN 104301997A CN 201410491001 A CN201410491001 A CN 201410491001A CN 104301997 A CN104301997 A CN 104301997A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0252—Radio frequency fingerprinting
- G01S5/02521—Radio frequency fingerprinting using a radio-map
- G01S5/02524—Creating or updating the radio-map
- G01S5/02525—Gathering the radio frequency fingerprints
- G01S5/02526—Gathering the radio frequency fingerprints using non-dedicated equipment, e.g. user equipment or crowd-sourcing
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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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- Radar, Positioning & Navigation (AREA)
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Abstract
The embodiment of the invention discloses a server to solve the problem that in the existing indoor positioning technology, a fingerprint database cannot be automatically updated. The server comprises an establishing module and an updating module, wherein the establishing module is used for establishing a first fingerprint with the position information of a mobile terminal and a signal characteristic value of the position of the mobile terminal, and the updating module is used for updating the fingerprint database with the first fingerprint. The embodiment of the invention further provides the mobile terminal, a system and a positioning method.
Description
Technical field
The present invention relates to field of locating technology, be specifically related to a kind of server, mobile terminal, system and localization method.
Background technology
Along with popularizing of WLAN (wireless local area network), indoor positioning technologies catches in recent years.Indoor positioning technologies refers in indoor environment, determine the geographical position residing for mobile terminal, utilize mobile radio networks, by measuring some parameters of the radio wave received, according to specific algorithm, in geographical position residing sometime, Accurate Measurement is carried out to a certain mobile terminal, so that for mobile phone users provides relevant location information service, or carry out real-time monitoring tracking.Wherein GPS (Global Positioning System, global positioning system) is the most frequently used location technology, and it is fine in outdoor utility effect, but in indoor because signal is blocked, cannot play a role.
A kind of indoor positioning technologies conventional is at present WI-FI (Wireless Fidelity, Wireless Fidelity) fingerprint location technology, such indoor positioning technologies needs to set up fingerprint database in off-line phase on the one hand, its workload is very large, on the other hand, once indoor environment changes, the distribution of signal also can change, and fingerprint database could use after needing artificial refreshing.
Summary of the invention
Embodiments provide a kind of server, mobile terminal, system and localization method, for solving the problem that in existing indoor positioning technologies, fingerprint database can not upgrade automatically.
First aspect present invention provides a kind of server, and described server comprises:
Set up module, for the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of described mobile terminal position;
Update module, for being updated to described first fingerprint in fingerprint database.
In conjunction with first aspect, in the implementation that the first is possible, described update module comprises:
Search unit, for searching in fingerprint database the second fingerprint whether recorded with described first fingerprint representation same position;
Adding device, if for described in search unit and do not find described second fingerprint, described first fingerprint is added in described fingerprint database;
Computing unit, if for described in search unit and find described second fingerprint, calculate the characteristic value similarity between described second fingerprint and described first fingerprint;
Updating block, for when the described characteristic value similarity that described computing unit calculates meets update condition, is updated to described first fingerprint by described second fingerprint.
In conjunction with the first possible implementation of first aspect, in the implementation that the second is possible, described computing unit, specifically for calculating the distance between described second fingerprint and described first fingerprint, using the described distance calculated as described characteristic value similarity.
In conjunction with the first possible implementation of first aspect, in the implementation that the third is possible, described updating block, specifically for judging whether described characteristic value similarity is greater than predetermined threshold value, if so, then more will add 1 by new count value;
When described more new count value is more than or equal to threshold value time, described second fingerprint is updated to described first fingerprint.
Second aspect present invention provides a kind of mobile terminal, comprising:
First sending module, sends framing signal for mobile terminal to navigation system, with the positional information making described navigation system obtain described mobile terminal position;
Second sending module, sends described signal characteristic value for described mobile terminal to described navigation system, to make described navigation system set up into fingerprint according to described positional information with described signal characteristic value, and is updated in fingerprint database by described fingerprint.
Third aspect present invention provides a kind of navigation system, comprising: locating access points, the server be connected with described locating access points;
Described locating access points, for obtaining the signal characteristic value of mobile terminal position, sends to described server by described signal characteristic value;
Described server server as described in relation to the first aspect.
Fourth aspect present invention provides a kind of localization method, comprising: the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of described mobile terminal position by server;
Described first fingerprint is updated in fingerprint database by described server.
In conjunction with fourth aspect, in the implementation that the first is possible, described first fingerprint is updated to fingerprint database and comprises by described server:
The second fingerprint with described first fingerprint representation same position whether has been recorded in described whois lookup fingerprint database;
If do not find described second fingerprint, described first fingerprint is added in fingerprint database;
If find described second fingerprint, calculate the characteristic value similarity between described second fingerprint and described first fingerprint, when described characteristic value similarity meets update condition, described second fingerprint is updated to described first fingerprint.
In conjunction with the first possible implementation of fourth aspect, in the implementation that the second is possible, the characteristic value similarity between described second fingerprint of described calculating and described first fingerprint comprises:
Calculate the distance between described second fingerprint and described first fingerprint, using the described distance calculated as described characteristic value similarity.
In conjunction with the implementation that the first or the second of fourth aspect are possible, in the implementation that the third is possible, when described characteristic value similarity meets described update condition, described second fingerprint is updated to described first fingerprint and comprises:
Judge whether described characteristic value similarity is greater than predetermined threshold value, if so, then more will add 1 by new count value;
When described more new count value is more than or equal to threshold value time, described second fingerprint is updated to described first fingerprint.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:
In the embodiment of the present invention, the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of this position by server, first fingerprint is updated in fingerprint database by this server, thus fingerprint database to be upgraded automatically and perfect, without the need to artificial participation, reduce engineering difficulty.
Accompanying drawing explanation
Fig. 1 is the embodiment schematic diagram based on the application scenarios of the distributed micropower base station of indoor multimode in the embodiment of the present invention;
Fig. 2 is an embodiment schematic diagram of server in the embodiment of the present invention;
Fig. 3 is another embodiment schematic diagram of server in the embodiment of the present invention;
Fig. 4 is another embodiment schematic diagram of server in the embodiment of the present invention;
Fig. 5 is an embodiment schematic diagram of mobile terminal in the embodiment of the present invention;
Fig. 6 is an embodiment schematic diagram of navigation system in the embodiment of the present invention;
Fig. 7 is an embodiment schematic diagram of localization method in the embodiment of the present invention;
Fig. 8 is another embodiment schematic diagram of localization method in the embodiment of the present invention;
Fig. 9 is another embodiment schematic diagram of localization method in the embodiment of the present invention;
Figure 10 is a structural representation of positioner in the embodiment of the present invention.
Embodiment
Embodiments provide a kind of server, mobile terminal, system and localization method, for solving the problem that in existing indoor positioning technologies, fingerprint database can not upgrade automatically.
It should be noted that, the term used in embodiments of the present invention is only for the object describing specific embodiment, and not intended to be limiting the present invention." one ", " described " and " being somebody's turn to do " of the singulative used in the embodiment of the present invention and appended claims is also intended to comprise most form, unless context clearly represents other implications.
Various technology described herein can be used for various communication system, comprise 2G, 3G communication system and next generation communication system, such as global mobile communication (GSM, global system for mobile commu nication) etc. 2G communication system, Wideband Code Division Multiple Access (WCDMA) (WCDMA, wideband code division multiple access), TD SDMA (TD-SCDMA, time division-synchroniz ation code division multiple access) etc. 3G communication system, Long Term Evolution (LTE, long-t erm evolution) next generation communication system such as communication system and follow-up evolution system thereof.
Base station described in the embodiment of the present invention can be the base transceiver station (BTS in gsm system or cdma system, base transceiver station) or WCDMA system in Node B (Nod e B) or evolved node B (e-NodeB, evolved NodeB) in LTE system or the follow-up evolution of L TE communication system in similar devices.
Mobile terminal described in the embodiment of the present invention can be through wireless access network (Radio Access Ne twork, RAN) equipment communicated is carried out with one or more core net, such as, can be mobile phone or the computer etc. with mobile terminal, such as, can also be portable, pocket, hand-hold type, built-in computer or vehicle-mounted mobile device etc., they and wireless access network switched voice and/or data.
Fig. 1 is a kind of application scenarios schematic diagram based on the distributed micropower base station of indoor multimode of the embodiment of the present invention, adopts bluetooth location technology and WI-FI location technology to carry out indoor positioning to mobile terminal under this scene.
As shown in Figure 1, this navigation system can comprise locating access points and location-server, locating access points is except base station, also be integrated with Remote Radio Unit, hub, baseband processing unit, wherein, by procotol (Internet Protocol between locating access points and location-server, IP) communication is carried out, locating access points is for receiving and dispatching the framing signal with handle mobile terminal, generate locator data, and locator data is sent to location-server, location-server is used for reprocessing and the calculating of locator data, estimate the position of mobile terminal, location-server is integrated with bluetooth hi-Fix algorithm, WI-FI fingerprinting localization algorithm,
Remote Radio Unit, for from acquisition for mobile terminal radiofrequency signal, generates baseband signal by this radiofrequency signal, and this baseband signal is sent to hub;
Hub, for obtaining this baseband signal from Remote Radio Unit, converges at least two kinds of these baseband signals, and by interface by this base band signal transmission to baseband processing unit;
Baseband processing unit, for obtaining baseband signal from this hub, generating locator data, and locator data is sent to server.
In addition, Remote Radio Unit comprises:
Bluetooth detector, WI-FI module, radio-frequency (RF) device, common public radio interface and controller;
Bluetooth detector, for from acquisition for mobile terminal Bluetooth signal, and sends to common public radio interface by Bluetooth signal;
WI-FI module, for from acquisition for mobile terminal WI-FI signal, and sends to common public radio interface by WI-FI signal;
Radio-frequency (RF) device, for from acquisition for mobile terminal wireless signal, and sends to common public radio interface by wireless signal; Also for carrying out communication with mobile terminal;
Common public radio interface, for obtaining Bluetooth signal from bluetooth detector, obtaining WI-FI signal from WI-FI module and obtaining wireless signal from radio-frequency (RF) device, generating baseband signal, and by base band signal transmission to hub.
Controller, for being obtained the signaling that Remote Radio Unit sends by common public radio interface, and to bluetooth detector, WI-FI module and radio-frequency (RF) device carry out control and management, comprise initialization, maintenance and configuration etc.
The technical scheme that the embodiment of the present invention provides, may be used for all kinds of indoor environment, as airport hall, exhibition room, supermarket, library, underground parking, mine, and the places such as office building.
Refer to Fig. 2, in the embodiment of the present invention, an embodiment of server 200 comprises:
Set up module 201, for the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of described mobile terminal position;
Update module 202, after the positional information of mobile terminal position being set up into the first fingerprint with the signal characteristic value of described mobile terminal position for described establishment module 201, is updated to described first fingerprint in fingerprint database.
In the embodiment of the present invention, the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of this position by server, first fingerprint is updated in fingerprint database by this server, thus fingerprint database to be upgraded automatically and perfect, without the need to artificial participation, reduce engineering difficulty.
Refer to Fig. 3, in the embodiment of the present invention, another embodiment of server 300 comprises:
Set up module 301, for the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of described mobile terminal position;
Search unit 302, for setting up after the positional information of mobile terminal position set up into the first fingerprint with the signal characteristic value of described mobile terminal position by module 301, searching in fingerprint database and whether having recorded the second fingerprint with the first fingerprint representation same position;
Adding device 303, for search unit 302 search in fingerprint database whether recorded with the second fingerprint of described first fingerprint representation same position after, if search unit 302 do not find described second fingerprint, described first fingerprint is added in described fingerprint database;
Computing unit 304, for search unit 302 search in fingerprint database whether recorded with the second fingerprint of described first fingerprint representation same position after, if search unit 302 to find described second fingerprint, calculate the characteristic value similarity between the second fingerprint and the first fingerprint;
Updating block 305, after calculating the characteristic value similarity between described second fingerprint and described first fingerprint, when the described characteristic value similarity that computing unit 304 calculates meets update condition, is updated to the first fingerprint by the second fingerprint for computing unit 304.
In the embodiment of the present invention, the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of this position by server, first fingerprint is updated in fingerprint database by this server, thus fingerprint database to be upgraded automatically and perfect, without the need to artificial participation, reduce engineering difficulty.
Refer to Fig. 4, in the embodiment of the present invention, another embodiment of server 400 comprises:
Set up module 401, for the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of described mobile terminal position;
Search unit 402, for setting up after the positional information of mobile terminal position set up into the first fingerprint with the signal characteristic value of described mobile terminal position by module 401, search in fingerprint database the second fingerprint whether recorded with described first fingerprint representation same position;
Adding device 403, for search unit 403 search in fingerprint database whether recorded with the second fingerprint of described first fingerprint representation same position after, if search unit 402 do not find described second fingerprint, the first fingerprint is added in fingerprint database;
Computing unit 404, for search unit 402 search in fingerprint database whether recorded with the second fingerprint of described first fingerprint representation same position after, if search unit 402 to find described second fingerprint, calculate the distance between the second fingerprint and the first fingerprint, using the described distance calculated as this characteristic value similarity.
Updating block 405, after calculating the distance between described second fingerprint and described first fingerprint, judges whether described characteristic value similarity is greater than predetermined threshold value for computing unit 404, if so, then more will add 1 by new count value; When described more new count value is more than or equal to threshold value time, the second fingerprint is updated to the first fingerprint.
In the embodiment of the present invention, the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of this position by server, first fingerprint is updated in fingerprint database by this server, thus fingerprint database to be upgraded automatically and perfect, without the need to artificial participation, reduce engineering difficulty.
Refer to Fig. 5, in the embodiment of the present invention, an embodiment of mobile terminal 500 comprises:
First sending module 501, sends framing signal for mobile terminal to navigation system, with the positional information making described navigation system obtain described mobile terminal position;
Second sending module 502, after sending framing signal for the first sending module 501 to navigation system, described mobile terminal sends described signal characteristic value to described navigation system, to make described navigation system set up into fingerprint according to described positional information with described signal characteristic value, and described fingerprint is updated in fingerprint database.
In the embodiment of the present invention, the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of this position by server, first fingerprint is updated in fingerprint database by this server, thus fingerprint database to be upgraded automatically and perfect, without the need to artificial participation, reduce engineering difficulty.
Refer to Fig. 6, in the embodiment of the present invention, an embodiment of navigation system 600 comprises: locating access points 606, the server 602 be connected with described locating access points 601;
Locating access points 601, for obtaining the signal characteristic value of mobile terminal position, sends to server 602 by described signal characteristic value;
Server 602 as Fig. 2,3, server in 4 any embodiment.
Refer to Fig. 7, in the embodiment of the present invention, an embodiment of localization method comprises:
701, the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of this position by server;
In embodiments of the present invention, this server is the server being different from location-server, for realizing the renewal of fingerprint database, this server first obtains the positional information of mobile terminal position and the signal characteristic value of this position, wherein, this positional information represents the geographical position at mobile terminal place, and this positional information can adopt location technology to acquire by the location-server in navigation system, and this signal characteristic value represents the signal strength signal intensity of mobile terminal position.In embodiments of the present invention, fingerprint not only comprises this positional information and this signal characteristic value, further comprises the incidence relation between this positional information and this signal characteristic value, such as has one-to-one relationship between positional information and signal characteristic value.Fingerprint embodies the signal characteristic of a certain position.
702, the first fingerprint is updated in fingerprint database by this server.
In embodiments of the present invention, first fingerprint is updated in fingerprint database the process of establishing including fingerprint database, namely, when there is not any fingerprint in fingerprint database, the fingerprint of interpolation diverse location can be accumulated to fingerprint database, thus set up fingerprint database, certainly, if contained the fingerprint in certain region in fingerprint database, multiple position is comprised in this region, when there is the fingerprint with the first fingerprint representation same position newly set up, the otherness between the fingerprint in new the first fingerprint of setting up and fingerprint database can be judged further, when new the first fingerprint set up meets update condition, realize the renewal of fingerprint database.
In the embodiment of the present invention, the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of this position by server, first fingerprint is updated in fingerprint database by this server, thus fingerprint database to be upgraded automatically and perfect, without the need to artificial participation, reduce engineering difficulty.
Refer to Fig. 8, on basis embodiment illustrated in fig. 7, an embodiment of further refinement localization method comprises:
801, the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of this position by server;
In embodiments of the present invention, before the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of this position by server, server first obtains the positional information of mobile terminal position and the signal characteristic value of this position, wherein, the positional information of this mobile terminal position can be that mobile terminal self measurement obtains, also the location-server by navigation system is located mobile terminal, measures the positional information obtaining mobile terminal.The location technology supported by mobile terminal is different, high-precision location technique can be adopted to locate, hybrid positioning technology also can be adopted to locate.Finally, terminal or the location-server server that sends to the embodiment of the present invention to provide this positional information.In this article, high-precision location technique comprises bluetooth high-precision location technique, ultrasonic wave location technology, end sensor navigator fix technology etc.Hybrid positioning technology refers to the combination of two kinds or two or more location technologies, this hybrid positioning technology can be the combination of WI-FI fingerprint location technology and other low precision location technologies, this low precision location technology can be cellular signal location technology etc., finally, this hybrid positioning technology defines a kind of high-precision location technique.
In addition, can be base station from this signal characteristic value of acquisition for mobile terminal, and this signal characteristic value is sent to this server, also can be that mobile terminal obtains this signal characteristic value from base station, and this signal characteristic value is sent to this server.This signal characteristic value illustrates the signal strength signal intensity of each base station at location point.
802, whether record the second fingerprint with the first fingerprint representation same position in this whois lookup fingerprint database, if find the second fingerprint, then calculate the characteristic value similarity between the second fingerprint and the first fingerprint; If do not find the second fingerprint, then the first fingerprint is added in fingerprint database;
In embodiments of the present invention, said same position can be understood like this, the position at mobile terminal place is positioned at a setting range, and same position can be thought in such as, position in the circular scope of diameter 1 meter.The characteristic value similarity calculated between the second fingerprint and the first fingerprint is the distance by calculating between the second fingerprint and the first fingerprint, using the distance calculated as this characteristic value similarity.
In this article, distance between fingerprint is actually fingerprint signal distance, such as wireless access points (Wireless AccessPoint, the average distance sum of the vector that signal strength signal intensity (Received Signal Strength Indicat ion, RSSI) AP) forms.Suppose that the signal strength signal intensity of the second fingerprint in fingerprint base is: (AP1_RSS1, AP2_RSS1, AP3_RSS1 ...); The signal strength signal intensity of the first fingerprint newly received is: (AP1_RSS2, AP2_RSS2, AP3_RSS2 ...); Fingerprint signal distance then between the first fingerprint and the second fingerprint is:
σ^2＝(AP1_RSS1-AP1_RSS2)^2+(AP2_RSS1-AP2_RSS2)^2+(A?P3_RSS1-AP3_RSS2)^2……。
803, judging whether to meet update condition according to characteristic value similarity, when meeting update condition, this second fingerprint being updated to the first fingerprint.
In embodiments of the present invention, judge whether to meet update condition specifically according to characteristic value similarity: judge whether this characteristic value similarity is greater than predetermined threshold value, if so, then more will add 1 by new count value; When more new count value is greater than or equal to threshold value for this, be judged as meeting update condition.Wherein, this predetermined threshold value refers to a difference range of this characteristic value similarity, if exceed this scope, then more will add 1 by new count value.That is: exceed this scope, illustrate that the second fingerprint and the first fingerprint are when representing same position, characteristic value similarity is different.
Can understand so in embodiments of the present invention, when such as more new count value is accumulated to a certain threshold value, then further illustrate there are differences of the first fingerprint and the second fingerprint, meet update condition, such as, the second fingerprint of an expression position has been there is in fingerprint database, when first time occurs that new the first fingerprint set up meets update condition, more will be designated as 1 by new count value, when second time occurs that new the first fingerprint (being different from the first fingerprint of the new establishment that first time occurs) set up meets update condition, more will add 1 by new count value, namely 2 are designated as, when third time occurs that new the first fingerprint set up meets update condition, then the second fingerprint in fingerprint database is updated to the first fingerprint that third time meets the new establishment of update condition.
In the embodiment of the present invention, the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of this position by server, first fingerprint is updated in fingerprint database by this server, thus fingerprint database to be upgraded automatically and perfect, without the need to artificial participation, reduce engineering difficulty.
Refer to Fig. 9, on the basis of embodiment above, introduce the localization method that mobile terminal side describes further.
901, mobile terminal sends framing signal to navigation system, with the positional information making this navigation system obtain mobile terminal position;
In embodiments of the present invention, this framing signal is for judging that mobile terminal supports the attribute of location technology, after such as mobile terminal sends framing signal to navigation system, according to this framing signal, navigation system judges which location technology mobile terminal supports, if support high-precision location technique, preferentially can adopt high-precision location technique, high-precision location technique comprises bluetooth high-precision location technique, ultrasonic wave location technology, end sensor navigator fix technology etc., if do not support high-precision location technique, hybrid positioning technology can be adopted, this hybrid positioning technology can refer to the combination of two kinds or two or more location technologies, this hybrid positioning technology can be the combination of WI-FI fingerprint location technology and other low precision location technologies, this low precision location technology can be cellular signal location technology etc., finally, this hybrid positioning technology defines a kind of high-precision location technique.Certainly, mobile terminal also self can measure the positional information obtaining position, finally, this positional information is sent to navigation system.
902, this mobile terminal sends signal characteristic value to navigation system, to make navigation system set up into fingerprint according to this positional information with signal characteristic value, and is updated in fingerprint database by this fingerprint.
In the present embodiment, mobile terminal can obtain this signal characteristic value from base station, and this signal characteristic value is sent to navigation system, and this signal characteristic value illustrates the signal strength signal intensity of each base station at location point.
Illustrate it is desirable that, if in fingerprint database, do not represent this fingerprint of mobile terminal position, then this fingerprint is added in fingerprint database, if there has been the fingerprint representing mobile terminal position, then compare the characteristic value similarity between fingerprint in fingerprint database and this fingerprint, judge whether to meet update condition according to characteristic value similarity, specifically can consult the content of enforcement two.
In the embodiment of the present invention, mobile terminal sends framing signal to navigation system, with the positional information making this navigation system obtain mobile terminal position; This mobile terminal sends signal characteristic value to navigation system, to make navigation system set up into fingerprint according to this positional information with signal characteristic value, and is updated in fingerprint database by this fingerprint, thus achieves the automatic renewal of fingerprint database.
For ease of understanding, with a concrete application scenarios, the localization method described in above-described embodiment is described in detail below, concrete:
The embodiment of the present invention, based on the application scenarios of the distributed micropower base station of indoor multimode, still supports bluetooth high-precision location technique and WI-FI fingerprint location technology for mobile terminal, launches a specific embodiment of the present invention further:
First, locating access points is integrated with AP module, can form WI-FI and cover, support that the mobile terminal of WI-FI can use WI-FI fingerprint location technology to position in this region in the interior space.
When using as WI-FI fingerprint location, mobile terminal detects the WI-FI signal characteristic of its position, namely each AP is in the WI-FI signal strength signal intensity of this location point, and the location-server reported in navigation system, the WI-FI fingerprint database of this position is stored in location-server, by comparing, the position at mobile terminal place can be estimated.
Secondly, locating access points is integrated with bluetooth detector, supports the measurement of the Bluetooth signal angle of arrival (Angle of Arrival, AOA).
When using as bluetooth hi-Fix, mobile terminal sends Bluetooth signal, bluetooth detector carries out arrival angular measurement, estimate the angle between mobile terminal and this access point, and estimated result is delivered to location-server, location-server processes the data that multiple access point reports, and combines the coordinate position of the access point be originally stored in location-server, just can estimate the position at mobile terminal place.
In addition, mobile terminal self also can measure the positional information of position.
Except providing different location technologies for different mobile terminal, another server being different from location-server in this navigation system can also realize automatic foundation and the renewal of WI-FI fingerprint database, specific as follows:
When navigation system is when using bluetooth hi-Fix, ask the WI-FI signal characteristic value of this its position of mobile terminal reporting to server, the location information sets of the mobile terminal position that this signal characteristic value and bluetooth hi-Fix obtain is built up a WI-FI fingerprint by server, for the renewal of WI-FI fingerprint database, the process that concrete fingerprint upgrades is: first, search the fingerprint whether fingerprint database has recorded this position, if do not had, then by the fingerprint of this newly establishment, be directly brought in fingerprint database, for follow-up position reference, if the fingerprint of this position existing in fingerprint database, then need to judge that this fingerprint newly set up upgrades the fingerprint in fingerprint database the need of going.A kind of may situation be fingerprint in the new fingerprint set up and fingerprint database be identical, now without the need to upgrading, fingerprint in the fingerprint that another kind of situation is newly set up and fingerprint database is completely different, and the fingerprint signal that such as environment change causes is different, now just needs to refresh.
Judge that whether two fingerprints are identical, be similar to by the distance calculated between two fingerprints, i.e. fingerprint signal distance, if this distance is less than certain threshold, then thinks two identical fingerprints; Otherwise, think two different fingerprints, need to judge whether to upgrade.
Fingerprint signal distance refers to the squared-distance sum of the vector of this each AP signal strength signal intensity composition.Give an example, suppose that the signal strength signal intensity of the fingerprint in fingerprint database is: (AP1_RSS1, AP2_RSS1, AP3_RSS1 ...); New establishment the signal strength signal intensity of fingerprint be: (AP1_RSS2, AP2_RSS2, AP3_RSS2 ...); Fingerprint signal distance then between two fingerprints is:
σ^2＝(AP1_RSS1-AP1_RSS2)^2+(AP2_RSS1-AP2_RSS2)^2+(A?P3_RSS1-AP3_RSS2)^2……。
In order to ensure the stability of fingerprint database, after receiving and being different from fingerprint, do not upgrade at once, more new count value can be accumulated, such as represent same position but the finger print information being different from the existing fingerprint in fingerprint database receiving more than 3, the renewal of fingerprint database can be carried out.
Like this, navigation system does not just need foundation and the renewal of additionally doing WI-FI fingerprint database again, when not having WI-FI fingerprint database in server, if need to carry out to mobile terminal the positional information that WI-FI fingerprint location obtains mobile terminal position, then positioning result misses by a mile, but, use bluetooth hi-Fix, and after reporting fingerprint, the WI-FI fingerprint database of this position just can be set up gradually, originally each fingerprint reported, nearly all be added in WI-FI fingerprint database, when there being mobile terminal reporting fingerprint again, the probability overlapped with the fingerprint in fingerprint database increases, thus the probability being added to fingerprint database also will reduce.Therefore, when originally setting up fingerprint database, fingerprint database exists and increases progressively process stably rapidly, and finally, fingerprint database is tending towards perfect.
Like this, after fingerprint database builds up, if when having mobile terminal to need to carry out WI-FI fingerprint location again, just can make more accurate location, and get more and more along with the fingerprint of fingerprint database, the WI-FI fingerprint location precision of this navigation system is also more and more higher.
In addition, after fingerprint database builds up, because the factor of environmental change, the fingerprint in fingerprint database originally will become inaccurate, when now adopting WI-FI fingerprint location, precision can reduce, but along with supporting that the mobile terminal of bluetooth high-precision location technique constantly enters, new fingerprint is reported, fingerprint database will be upgraded, and positioning precision can progressively be recovered again.
Therefore this navigation system is the system of a self-recovery, can be real-time carry out fingerprint database renewal, the renewal of fingerprint database can not be interrupted because of other factors such as environment.
Please refer to Figure 10, positioner 1000 structural representations that Figure 10 provides for the embodiment of the present invention, wherein, at least one processor 1001 (such as CPU, Central Processing Unit), at least one network interface or other communication interface, memory 1002, at least one communication bus, at least one input unit 1003, at least one output device 1004 and uninterrupted power supply UPS 1005 can be comprised for realizing the connection communication between these devices.Described processor 1001 such as, for performing the executable module stored in described memory 1002, computer program.Described memory 1002 may comprise high-speed random access memory (RAM, Random Access Memory), still may comprise non-labile memory (non-volatile memory), such as at least one magnetic disc store.Realize the communication connection between this system gateway and at least one other network element by least one network interface (can be wired or wireless), can the Internet be used, wide area network, local network, metropolitan area network etc.
As shown in Figure 10, in some embodiments, store program command in described memory 1002, described program command can be performed by described processor 1001, and described processor 1001 specifically performs following steps:
The positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of described mobile terminal position;
This first fingerprint is updated in fingerprint database.
In some embodiments, described processor 1001 can also perform following steps:
Search in fingerprint database and whether recorded the second fingerprint with this first fingerprint representation same position;
If do not find the second fingerprint, this first fingerprint is added in fingerprint database;
If find described second fingerprint, calculate the characteristic value similarity between the second fingerprint and the first fingerprint, when this characteristic value similarity meets update condition, the second fingerprint is updated to the first fingerprint.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of each embodiment method of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.
The above, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a server, is characterized in that, comprising:
Set up module, for the positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of described mobile terminal position;
Update module, for being updated to described first fingerprint in fingerprint database.
2. server according to claim 1, is characterized in that, described update module comprises:
Search unit, for searching in fingerprint database the second fingerprint whether recorded with described first fingerprint representation same position;
Adding device, if for described in search unit and do not find described second fingerprint, described first fingerprint is added in described fingerprint database;
Computing unit, if for described in search unit and find described second fingerprint, calculate the characteristic value similarity between described second fingerprint and described first fingerprint;
Updating block, for when the described characteristic value similarity that described computing unit calculates meets update condition, is updated to described first fingerprint by described second fingerprint.
3. server according to claim 2, is characterized in that,
Described computing unit, specifically for calculating the distance between described second fingerprint and described first fingerprint, using the described distance calculated as described characteristic value similarity.
4. server according to claim 2, is characterized in that,
Described updating block, specifically for judging whether described characteristic value similarity is greater than predetermined threshold value, if so, then more will add 1 by new count value;
When described more new count value is more than or equal to threshold value time, described second fingerprint is updated to described first fingerprint.
5. a mobile terminal, is characterized in that, comprising:
First sending module, sends framing signal for mobile terminal to navigation system, with the positional information making described navigation system obtain described mobile terminal position;
Second sending module, sends described signal characteristic value for described mobile terminal to described navigation system, to make described navigation system set up into fingerprint according to described positional information with described signal characteristic value, and is updated in fingerprint database by described fingerprint.
6. a navigation system, is characterized in that, comprising:
Locating access points, the server be connected with described locating access points;
Described locating access points, for obtaining the signal characteristic value of mobile terminal position, sends to described server by described signal characteristic value;
The server of described server as described in any one of Claims 1-4.
7. a localization method, is characterized in that, comprising:
The positional information of mobile terminal position is set up into the first fingerprint with the signal characteristic value of described mobile terminal position by server;
Described first fingerprint is updated in fingerprint database by described server.
8. method according to claim 7, is characterized in that, described first fingerprint is updated to fingerprint database and comprises by described server:
The second fingerprint with described first fingerprint representation same position whether has been recorded in described whois lookup fingerprint database;
If do not find described second fingerprint, described first fingerprint is added in fingerprint database;
If find described second fingerprint, calculate the characteristic value similarity between described second fingerprint and described first fingerprint, when described characteristic value similarity meets update condition, described second fingerprint is updated to described first fingerprint.
9. method according to claim 8, is characterized in that, the characteristic value similarity between described second fingerprint of described calculating and described first fingerprint comprises:
Calculate the distance between described second fingerprint and described first fingerprint, using the described distance calculated as described characteristic value similarity.
10. method according to claim 8 or claim 9, is characterized in that, when described characteristic value similarity meets described update condition, described second fingerprint is updated to described first fingerprint and comprises:
Judge whether described characteristic value similarity is greater than predetermined threshold value, if so, then more will add 1 by new count value;
When described more new count value is more than or equal to threshold value time, described second fingerprint is updated to described first fingerprint.
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| CN201410491001.0A CN104301997A (en) | 2014-09-23 | 2014-09-23 | Server, mobile terminal, system and positioning method |
| PCT/CN2015/077926 WO2016045386A1 (en) | 2014-09-23 | 2015-04-30 | Server, mobile terminal, system and positioning method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410491001.0A CN104301997A (en) | 2014-09-23 | 2014-09-23 | Server, mobile terminal, system and positioning method |
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| CN201410491001.0A Pending CN104301997A (en) | 2014-09-23 | 2014-09-23 | Server, mobile terminal, system and positioning method |
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| WO2016045386A1 (en) * | 2014-09-23 | 2016-03-31 | 华为技术有限公司 | Server, mobile terminal, system and positioning method |
| TWI558245B (en) * | 2015-05-08 | 2016-11-11 | 宏碁股份有限公司 | Method and system for searching nearby apparatus |
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