CN108377462A - Localization method, indoor intelligent gateway, positioning device and terminal - Google Patents
Localization method, indoor intelligent gateway, positioning device and terminal Download PDFInfo
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- CN108377462A CN108377462A CN201611021658.6A CN201611021658A CN108377462A CN 108377462 A CN108377462 A CN 108377462A CN 201611021658 A CN201611021658 A CN 201611021658A CN 108377462 A CN108377462 A CN 108377462A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
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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
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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- Computer Networks & Wireless Communication (AREA)
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- Position Fixing By Use Of Radio Waves (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A kind of localization method of present invention proposition, indoor intelligent gateway, positioning device and terminal, are related to wireless positioning field.Wherein, a kind of localization method of the invention includes：Indoor intelligent gateway IIG obtains the position enquiring request for carrying out self terminal, and position enquiring request includes the radio signal characteristics of terminal present position；The radio signal characteristics of terminal present position and location fingerprint information match are determined terminal location by IIG；Terminal location is returned into terminal.By such method, the IIG of indoor deployment can receive the position enquiring request of terminal, by with the position for matching to obtain terminal of location fingerprint information and inform terminal, carry out indoor positioning using being deployed in indoor equipment to realize, improve the accuracy of indoor positioning.
Description
Technical field
The present invention relates to wireless positioning field, especially a kind of localization method, indoor intelligent gateway, positioning device and end
End.
Background technology
Current common localization method be by GPS (Global Positioning System, global positioning system),
The wireless signal that the equipment such as WiFi (Wireless Fidelity, Wireless Fidelity) base station, mobile network base station, bluetooth provide comes
Positioning.Precision of such method in outdoor positioning occasion has been approved by people.
However, these equipment majorities are all deployed in outdoor, their signal is in reflection, refraction, the scattering etc. by wall
It cannot achieve indoor accurate positionin later, error is very big.And since careat is smaller, accuracy of the user to indoor positioning
Demand often higher, existing positioning method cannot be satisfied the demand of indoor precise positioning.
Invention content
It is an object of the present invention to improve the precision of indoor positioning.
According to an aspect of the present invention, a kind of localization method is proposed, including：IIG(Indoor Intelligent
Gateway, indoor intelligent gateway) the position enquiring request for carrying out self terminal is obtained, position enquiring request includes position residing for terminal
The radio signal characteristics set；The radio signal characteristics of terminal present position and location fingerprint information match are determined terminal by IIG
Position；Terminal location is returned into terminal.
Optionally, the radio signal characteristics of terminal present position include the intensity of each wireless signal of terminal present position
It is identified with the source IIG of wireless signal；Location fingerprint information includes the correspondence of radio signal characteristics and location information.
Optionally, further include：IIG obtains the intensity of the location information and wireless signal of each IIG of surrounding；According to each
The location information of IIG determines the radio signal characteristics of each position of surrounding based on radio signal attenuation algorithm, generates location fingerprint
Information.
Optionally, further include：IIG sends location fingerprint calibration request to each IIG around；It receives each from surrounding
The calibration of IIG replies message；Message calibrating position finger print information is replied according to the calibration that around each IIG is returned.
Optionally, IIG includes to each IIG transmissions location fingerprint calibration request around：IIG is with predetermined time interval to week
It encloses each IIG and sends location fingerprint calibration request.
Optionally, IIG includes to each IIG transmissions location fingerprint calibration request around：When IIG receives position enquiring request
Afterwards, location fingerprint calibration request is sent to each IIG around.
Optionally, replying message calibrating position finger print information according to the calibration that around each IIG is returned includes：Comparison calibration
The calibration of the positions IIG replies the wireless signal strength of the source IIG of message in the signal strength and location fingerprint information of answer message；
If the calibration of the positions IIG replies the wireless communication of the source IIG of message in the signal strength and location fingerprint information of calibration answer message
Number intensity differs, then is based on radio signal attenuation algorithm and updates location fingerprint information.
By such method, the IIG of indoor deployment can receive terminal position enquiring request, by with location fingerprint
The matching of information obtains the position of terminal and informs terminal, indoor fixed using indoor equipment progress is deployed in realize
Position, improves the accuracy of indoor positioning.
According to another aspect of the present invention, a kind of localization method is proposed, including：Terminal sends position enquiring to IIG and asks
It asks, wherein position enquiring request includes the radio signal characteristics of terminal present position；The terminal location from IIG is received,
In, the position that matches with the radio signal characteristics of terminal present position in the location fingerprint information that terminal location is IIG.
Optionally, terminal includes to IIG transmission position enquiring requests：Terminal sends position enquiring to apart from nearest IIG
Request.
By such method, terminal can carry out position enquiring to the IIG of indoor deployment, and obtain position from IIG and believe
Breath, improves the accuracy of indoor positioning.
According to a further aspect of the invention, a kind of indoor intelligent gateway IIG is proposed, including：Acquisition request module, is used for
The position enquiring request for carrying out self terminal is obtained, position enquiring request includes the radio signal characteristics of terminal present position；Position
Determining module, for by the radio signal characteristics of terminal present position and location fingerprint information match, determining terminal location；Position
Return module is set, for terminal location to be returned to terminal.
Optionally, the radio signal characteristics of terminal present position include the intensity of each wireless signal of terminal present position
It is identified with the source IIG of wireless signal；Location fingerprint information includes the correspondence of radio signal characteristics and location information.
Optionally, further include initial position fingerprint generation module, be used for：The location information of each IIG around obtaining；According to
The location information of each IIG determines the radio signal characteristics of each position of surrounding based on radio signal attenuation algorithm, generates position
Finger print information.
Optionally, further include calibration module, be used for：Location fingerprint calibration request is sent to each IIG around；Reception comes from
The calibration of each IIG of surrounding replies message；Message calibrating position finger print information is replied according to the calibration that around each IIG is returned.
Optionally, calibration module, which is used to send location fingerprint calibration request to each IIG around, includes：Calibration module is with pre-
It fixes time to be spaced to each IIG around and sends location fingerprint calibration request.
Optionally, calibration module, which is used to send location fingerprint calibration request to each IIG around, includes：When IIG receives position
After setting inquiry request, calibration module sends location fingerprint calibration request to each IIG around.
Optionally, calibration module is used to reply message calibrating position finger print information according to the calibration that around each IIG is returned
Including：The calibration of the positions IIG replies message in the signal strength and location fingerprint information of calibration module comparison calibration answer message
Source IIG wireless signal strength；If the calibration of the positions IIG is answered in the signal strength and location fingerprint information of calibration answer message
The wireless signal strength of the source IIG of multiple message differs, then is based on radio signal attenuation algorithm and updates location fingerprint information.
Such IIG can receive the position enquiring request of terminal, and terminal is obtained by the matching with location fingerprint information
Position and inform terminal, carry out indoor positioning using being deployed in indoor equipment to realize, improve indoor positioning
Accuracy.
According to a further aspect of the invention, a kind of terminal positioning device is proposed, including：Location Request sending module is used
It is asked in sending position enquiring to indoor intelligent gateway IIG, wherein position enquiring request includes the wireless of terminal present position
Signal characteristic；Position receiving module, for receiving the terminal location from IIG, wherein terminal location is the location fingerprint of IIG
The position to match with the radio signal characteristics of terminal present position in information.
Optionally, Location Request sending module is specifically used for sending position enquiring request apart from nearest IIG to terminal.
Such terminal positioning device can carry out position enquiring to the IIG of indoor deployment, and obtain position from IIG and believe
Breath, improves the accuracy of indoor positioning.
In addition, according to an aspect of the present invention, propose a kind of terminal, including any one terminal being mentioned above is fixed
Position device.
Such terminal can carry out position enquiring to the IIG of indoor deployment, and obtain location information from IIG, improve
The accuracy of indoor positioning.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of one embodiment of the localization method of the present invention.
Fig. 2 be the present invention localization method in generate location fingerprint information one embodiment flow chart.
The flow chart of one embodiment that Fig. 3 calibrates for location fingerprint information in the localization method of the present invention.
Fig. 4 is the flow chart of another embodiment of the localization method of the present invention.
Fig. 5 is the schematic diagram of one embodiment of the IIG of the present invention.
Fig. 6 is the schematic diagram of another embodiment of the IIG of the present invention.
Fig. 7 is the schematic diagram of another embodiment of the IIG of the present invention.
Fig. 8 is the schematic diagram of one embodiment of the terminal positioning device of the present invention.
Specific implementation mode
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
In order to solve positioning device indoor accurate positionin is cannot achieve after reflection, refraction, scattering of wall etc.
The problem of, the equipment such as base station can be specially disposed indoors for indoor positioning, still, not only cost is very for such scheme
Height, and it is extremely dumb.
The flow chart of one embodiment of the localization method of the present invention is as shown in Figure 1.
In a step 101, IIG obtains the position enquiring request for carrying out self terminal, and position enquiring request includes residing for terminal
The radio signal characteristics of position.In one embodiment, the radio signal characteristics of terminal present position include terminal present position
Each wireless signal intensity and source IIG mark.The radio signal characteristics of terminal present position may include a source IIG mark
The intensity of the wireless signal of knowledge and source IIG in the position can also include multiple source IIG marks and each source IIG in the position
The intensity for the wireless signal set.
In a step 102, IIG determines the radio signal characteristics of terminal present position and location fingerprint information match
Terminal location.In one embodiment, location fingerprint information includes the intensity and source IIG marks of the wireless signal of each position.
In one embodiment, location fingerprint information is stored in IIG, location fingerprint information includes each position around the IIG
Radio signal characteristics and the IIG and each IIG of surrounding between region radio signal characteristics.
In step 103, terminal location is returned into terminal.
By such method, the IIG of indoor deployment can receive terminal position enquiring request, by with location fingerprint
The matching of information obtains the position of terminal and informs terminal, indoor fixed using indoor equipment progress is deployed in realize
Position, improves the accuracy of indoor positioning.
Environment indoors, in megastore, many shops all deploy WiMAX, the family then generated by IIG
It is surfed the Internet with wireless network, and the precise physical address of each IIG is known by operator.It is worked in coordination and is determined using these IIG
Position and position correction, enable to a large amount of IIG fully to be applied, and increase user's viscosity, promote the competitiveness of operator.Together
When, the scope of application can be improved by carrying out compatible cooperation between different operators and the IIG of company, it is successful to improve positioning
Probability.
In one embodiment, IIG can be interacted by the IIG with surrounding generates location fingerprint information and stores.IIG can
Only to carry out once-through operation in initialization.The stream of one embodiment of location fingerprint information is generated in the localization method of the present invention
Journey figure is as shown in Figure 2.
In step 201, IIG obtains the intensity of the location information and wireless signal of each IIG of surrounding.In one embodiment
In, IIG actively can initiate request to neighbouring IIG, receive the IIG feedback informations that the IIG of request is asked to initiation, feedback letter
It may include the elaborate position of itself in breath.Initiate the wireless signal strength of the IIG acquisition feedback informations of request.
In step 202, IIG determines surrounding according to the location information of each IIG around based on radio signal attenuation algorithm
The radio signal characteristics of any position generate location fingerprint information.In one embodiment, IIG is according to the feedback information received
Signal strength, feedback information the source positions IIG, transmitting signal strength, based on radio signal attenuation algorithm calculate IIG around,
The location fingerprint information in region between IIG and surrounding IIG.
By such method, IIG can be obtained around IIG by the interaction with neighbouring IIG in initialization, IIG with
Location fingerprint information between surrounding IIG, and the location fingerprint information is stored, pass through the position in being asked with the position enquiring of user
Finger print information is set to match to obtain the position of terminal and inform terminal, it is indoor using indoor equipment progress is deployed in realize
Positioning, improves the accuracy of indoor positioning.
Due to often there is many different barriers indoors, between IIG, and some barriers often change,
Such as the biology of walking or the object of movement, the location fingerprint information that IIG is generated need to carry out again by real time calibration and update
Positioning in real time.The flow chart of one embodiment that location fingerprint information is calibrated in the localization method of the present invention is as shown in Figure 3.
In step 301, IIG sends location fingerprint calibration request to each IIG around.It is wrapped in location fingerprint calibration request
The transmission power for including the location fingerprint calibration request sends the exact position of the IIG of the location fingerprint calibration request.
In step 302, it receives the calibration from each IIG around and replies message.It includes the school that calibration, which replies message,
Standard replies the transmission power of message, sends out the exact position that the calibration replies the IIG of message.
In step 303, IIG comparison calibrations reply the signal strength of message and the school of positions IIG in location fingerprint information
Standard replies the wireless signal strength of the source IIG of message.If the two is identical, without processing；If differing, then follow the steps
304。
In step 304, message is replied according to the calibration received, based on radio signal attenuation algorithm update location fingerprint letter
Breath.In one embodiment, IIG comparison calibrations reply the signal strength of message and the school of positions IIG in location fingerprint information
Standard replies the wireless signal strength of the source IIG of message, judges whether the two is identical.If identical, update is not executed；If it is different,
Then the signal strength of message is replied, which replies the transmission power of message and sends out the calibration according to calibration and replies message
The exact position of IIG updates location fingerprint information based on radio signal attenuation algorithm.
By such method, can real time calibration location fingerprint information, avoid using caused by static or off-line data
The problem of position inaccurate, is more in line with the case where interior space is small, barrier changes frequent occurrence, improves the accurate of positioning
Degree.
In one embodiment, IIG can send location fingerprint calibration to each IIG around with predetermined time interval and ask
It asks.In one embodiment, predetermined time interval can be determined by default, such as 2 seconds or 1 minute etc..Preset value depends on
IIG density in the region, the more high then predetermined time interval of density can be bigger.It by such method, can be with certain
Frequency updates location fingerprint, to ensure that the location fingerprint information of IIG storages is newer state, is ensureing positional accuracy
Meanwhile reducing and needing newer location fingerprint information every time, the time of update location fingerprint information every time is saved, is improved
The orienting response rate of IIG.
In another embodiment, IIG can also be after receiving the position enquiring for carrying out self terminal request, to each around
IIG sends location fingerprint calibration request.Since location fingerprint information is constantly updated, it is calibrated to based on the last position
Finger print information is calibrated, and needs the content changed less, therefore shorter the time required to calibrating, and IIG being capable of quick return position
Query result ensure that search efficiency while improving accuracy, meet user experience.
The flow chart of another embodiment of the localization method of the present invention is as shown in Figure 4.
In step 401, terminal sends position enquiring request to IIG, wherein position enquiring request includes residing for terminal
The radio signal characteristics of position.
In step 402, terminal receives the terminal location from IIG, wherein the location fingerprint that terminal location is IIG is believed
The position to match with the radio signal characteristics of terminal present position in breath.
By such method, terminal can carry out position enquiring to the IIG of indoor deployment, and obtain position from IIG and believe
Breath, improves speed and the accuracy of indoor positioning.
In one embodiment, terminal determines the IIG nearest from oneself according to signal strength, and then nearest to distance
IIG sends position enquiring request.By such method, the successful accuracy of positioning on the one hand can be improved, on the other hand, no
It needs to be inquired by the way of broadcast, reduces the burden of network, IIG and terminal.
The schematic diagram of one embodiment of the IIG of the present invention is as shown in Figure 5.Wherein, acquisition request module 501 can obtain
Carry out the position enquiring request of self terminal, position enquiring request includes the radio signal characteristics of terminal present position.In a reality
It applies in example, the radio signal characteristics of terminal present position include the intensity and source IIG of each wireless signal of terminal present position
Mark.The radio signal characteristics of terminal present position may include the wireless communication of a source IIG mark and source IIG in the position
Number intensity, can also include multiple source IIG mark and the wireless signals of each source IIG in the position intensity.Location determination
The radio signal characteristics of terminal present position and location fingerprint information match can be determined terminal location by module 502.One
In a embodiment, location fingerprint information storage in location fingerprint database, including the intensity of the wireless signal of each position and
Source IIG is identified.In one embodiment, location fingerprint information is stored in IIG, location fingerprint information includes around the IIG
Each position radio signal characteristics and the IIG and each IIG of surrounding between region radio signal characteristics.It returns position
Terminal can be returned to by terminal location by returning module 503.
Such IIG can receive the position enquiring request of terminal, and terminal is obtained by the matching with location fingerprint information
Position and inform terminal, carry out indoor positioning using being deployed in indoor equipment to realize, improve indoor positioning
Accuracy；IIG can carry out position enquiring by the location fingerprint information of itself storage, without being looked into central server
It askes, compared with existing base station location equipment, improves reaction speed.Since such IIG only need to be on the basis of existing IIG
It is upper to install above-mentioned modular structure additional, without specially disposing the equipment such as base station indoors, reduce input, application easy to spread.
In one embodiment, the location fingerprint information of IIG storages can be networked by IIG and upload to middle position service
Device carries out the overall situation with the location fingerprint information that other IIG are uploaded and summarizes, calibrates and back up, then the location fingerprint after calibration is believed
Breath is sent to IIG, and the location fingerprint information to realize multiple IIG summarizes and calibrates, and further improves the standard of positioning
Exactness
The schematic diagram of another embodiment of the IIG of the present invention is as shown in Figure 6.Wherein, acquisition request module 601, position
The structure and function that determining module 602 and position return to module 603 is similar to the embodiment of Fig. 5.IIG can also include initial
Location fingerprint generation module 604 can obtain the intensity of the around location information of each IIG and wireless signal, and according to surrounding
The location information of each IIG determines the radio signal characteristics of surrounding any position based on radio signal attenuation algorithm, generates position
Finger print information.In one embodiment, IIG actively can initiate request to neighbouring IIG, and the IIG for receiving request is asked to initiation
The IIG feedback informations asked may include the elaborate position of itself in feedback information.The IIG for initiating request acquires the feedback received
The wireless signal strength of information.In one embodiment, IIG is according to the signal strength of the feedback information received, feedback information
The source positions IIG, transmitting signal strength are calculated based on radio signal attenuation algorithm around IIG, region between IIG and surrounding IIG
Location fingerprint information.
Such IIG can in initialization by being interacted to obtain around IIG with the active of neighbouring IIG, IIG and surrounding
Location fingerprint information between IIG, and the location fingerprint information is stored, by referring to the position in the request of the position enquiring of user
Line information matches obtain the position of terminal and inform terminal, indoor fixed using indoor equipment progress is deployed in realize
Position, improves the accuracy of indoor positioning.
Due to often there is many different barriers indoors, between IIG, and some barriers often change,
Such as the biology of walking or the object of movement, the location fingerprint information that IIG is generated need to carry out again by real time calibration and update
Positioning in real time.The schematic diagram of another embodiment of the IIG of the present invention is as shown in Figure 7.Wherein, acquisition request module 701, position
Determining module 702, position return to the embodiment of module 703 and the structure and function and Fig. 6 of initial position fingerprint generation module 704
In it is similar.IIG further includes calibration module 705, can send location fingerprint calibration request to each IIG around, receive from week
The calibration for enclosing each IIG replies message.The school of the positions IIG in the signal strength and location fingerprint information of comparison calibration answer message
Standard replies the wireless signal strength of the source IIG of message.If the two is identical, without processing；If differing, according to what is received
Calibration replies message, updates location fingerprint information based on radio signal attenuation algorithm.In one embodiment, location fingerprint is calibrated
Request includes the transmission power of the location fingerprint calibration request, sends the exact position of the IIG of the location fingerprint calibration request.
It includes the transmission power that the calibration replies message that calibration, which replies message, sends out the exact position that the calibration replies the IIG of message.
In one embodiment, the calibration of the positions IIG is answered in the signal strength and location fingerprint information of IIG comparison calibrations answer message
The wireless signal strength of the source IIG of multiple message judges whether the two is identical.If identical, update is not executed；If it is different, then root
The signal strength of message is replied according to calibration, which replies the transmission power of message and sends out the IIG's of calibration answer message
Exact position updates location fingerprint information based on radio signal attenuation algorithm.
Such IIG is capable of the real time calibration location fingerprint information of active, avoids using caused by static or off-line data
The problem of position inaccurate, is more in line with the case where interior space is small, barrier changes frequent occurrence, improves the accurate of positioning
Degree.
In one embodiment, calibration module 705 can send location fingerprint with predetermined time interval to each IIG around
Calibration request.In one embodiment, predetermined time interval can be determined by default, such as 2 seconds or 1 minute.Preset value
Depending on the IIG density in the region, density is higher, and interval is bigger.Such IIG can update position with certain frequency and refer to
Line while ensureing positional accuracy, reduces every to ensure that the location fingerprint information of IIG storages is newer state
It is secondary to need newer location fingerprint information, the time of update location fingerprint information every time is saved, the orienting response speed of IIG is improved
Rate.
In another embodiment, calibration module 705 can also be received in acquisition request module 701 comes the position of self terminal
After inquiry request, location fingerprint calibration request is sent to each IIG around.Since location fingerprint information is constantly updated, school
Standard is calibrated for the location fingerprint information based on the last time, needs newer content less, therefore shorter the time required to calibrating,
IIG can quick return position query result, ensure that search efficiency while improving accuracy, meet user experience.
The schematic diagram of one embodiment of the terminal positioning device of the present invention is as shown in Figure 8.Wherein, Location Request sends mould
Block 801 can send position enquiring request to IIG, wherein position enquiring request includes the wireless signal of terminal present position
Feature.Position receiving module 802 can receive the terminal location from IIG, wherein terminal location is IIG according to location fingerprint
Information and the matching of the radio signal characteristics of terminal present position determine.
Using such device, terminal can carry out position enquiring to the IIG of indoor deployment, and obtain position from IIG and believe
Breath, improves speed and the accuracy of indoor positioning.
In one embodiment, terminal positioning device determines the IIG nearest from oneself according to signal strength, and then to distance
Nearest IIG sends position enquiring request.On the one hand such device can improve the successful accuracy of positioning, on the other hand,
It need not be inquired by the way of broadcast, reduce the burden of network.
The terminal of the present invention is equipped with any one the terminal positioning device being mentioned above, when user uses eventually indoors
When end is positioned, terminal can utilize terminal positioning device to send position enquiring to IIG and ask, and receive the end from IIG
End position, wherein terminal location is that IIG is true according to location fingerprint information and the matching of the radio signal characteristics of terminal present position
It is fixed.
Such terminal can carry out position enquiring to the IIG of indoor deployment, and obtain location information from IIG, improve
The speed of indoor positioning and accuracy.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that：Still
It can modify to the specific implementation mode of the present invention or equivalent replacement is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (17)
1. a kind of localization method, which is characterized in that including：
Indoor intelligent gateway IIG obtains the position enquiring request for carrying out self terminal, and the position enquiring request includes residing for terminal
The radio signal characteristics of position；
The radio signal characteristics of terminal present position and location fingerprint information match are determined terminal location by the IIG；
The terminal location is returned into the terminal.
2. according to the method described in claim 1, it is characterized in that,
The radio signal characteristics of the terminal present position include the strong of each wireless signal of the terminal present position
The source IIG of degree and the wireless signal is identified；
The location fingerprint information includes the correspondence of the radio signal characteristics and location information.
3. according to the method described in claim 1, it is characterized in that, further including：
The IIG obtains the intensity of the location information and wireless signal of each IIG of surrounding；
According to the location information of each IIG, the wireless signal of each position of surrounding is determined based on radio signal attenuation algorithm
Feature generates location fingerprint information.
4. method according to claim 1,2 or 3, which is characterized in that further include：
The IIG sends location fingerprint calibration request to each IIG around；
It receives the calibration from each IIG around and replies message；
Message, which is replied, according to the calibration that around each IIG is returned calibrates the location fingerprint information.
5. according to the method described in claim 4, it is characterized in that, the IIG sends location fingerprint calibration to each IIG around
Request includes：
The IIG sends the location fingerprint calibration request with predetermined time interval to each IIG around；And/or
After the IIG receives the position enquiring request, the location fingerprint calibration request is sent to each IIG around.
6. according to the method described in claim 4, it is characterized in that, described reply report according to the calibration that around each IIG is returned
Text calibrates the location fingerprint information：
It compares the calibration for calibrating the positions IIG in the signal strength for replying message and the location fingerprint information and replies report
The wireless signal strength of the source IIG of text；
If the calibration of the positions IIG described in the signal strength and the location fingerprint information of the calibration answer message replies
The wireless signal strength of the source IIG of message differs, then is based on radio signal attenuation algorithm and updates the location fingerprint letter
Breath.
7. a kind of localization method, which is characterized in that including：
Terminal sends position enquiring request to indoor intelligent gateway IIG, wherein the position enquiring request includes residing for terminal
The radio signal characteristics of position；
Receive the terminal location from the IIG, wherein the terminal location in the location fingerprint information of the IIG with institute
State the position that the radio signal characteristics of terminal present position match.
8. the method according to the description of claim 7 is characterized in that the terminal includes to IIG transmission position enquiring requests：
The terminal sends the position enquiring request to apart from nearest IIG.
9. a kind of indoor intelligent gateway IIG, which is characterized in that including：
Acquisition request module, for obtaining the position enquiring request for carrying out self terminal, the position enquiring request includes terminal institute
Locate the radio signal characteristics of position；
Position determination module is used for by the radio signal characteristics of terminal present position and location fingerprint information match, really
Determine terminal location；
Position returns to module, for the terminal location to be returned to the terminal.
10. IIG according to claim 9, which is characterized in that
The radio signal characteristics of the terminal present position include the strong of each wireless signal of the terminal present position
The source IIG of degree and the wireless signal is identified；
The location fingerprint information includes the correspondence of the radio signal characteristics and location information.
11. IIG according to claim 9, which is characterized in that
Further include initial position fingerprint generation module, is used for：
The location information of each IIG around obtaining；
According to the location information of each IIG, the wireless signal of each position of surrounding is determined based on radio signal attenuation algorithm
Feature generates location fingerprint information.
12. according to the IIG described in claim 9,10 or 11, which is characterized in that further include calibration module, be used for：
Location fingerprint calibration request is sent to each IIG around；
It receives the calibration from each IIG around and replies message；
Message, which is replied, according to the calibration that around each IIG is returned calibrates the location fingerprint information.
13. IIG according to claim 12, which is characterized in that the calibration module is used to send position to each IIG around
Setting fingerprint calibration request includes：
The calibration module sends the location fingerprint calibration request with predetermined time interval to each IIG around；And/or
After the IIG receives the position enquiring request, the calibration module sends the location fingerprint to each IIG around
Calibration request.
14. IIG according to claim 12, which is characterized in that the calibration module is used to be returned according to each IIG around
Calibration reply message and calibrate the location fingerprint information and include：
The calibration module compares the institute for calibrating the positions IIG in the signal strength for replying message and the location fingerprint information
State the wireless signal strength that calibration replies the source IIG of message；
If the calibration of the positions IIG described in the signal strength and the location fingerprint information of the calibration answer message replies
The wireless signal strength of the source IIG of message differs, then is based on radio signal attenuation algorithm and updates the location fingerprint letter
Breath.
15. a kind of terminal positioning device, which is characterized in that including：
Location Request sending module, for sending position enquiring request to indoor intelligent gateway IIG, wherein the position enquiring
Request includes the radio signal characteristics of terminal present position；
Position receiving module, for receiving the terminal location from the IIG, wherein the terminal location is the position of the IIG
Set the position that the radio signal characteristics in finger print information with terminal present position match.
16. device according to claim 15, which is characterized in that the Location Request sending module be specifically used for end
It holds and sends the position enquiring request apart from nearest IIG.
17. a kind of terminal, which is characterized in that including the terminal positioning device described in claim 15 or 16.
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