EP3391071A1 - Verfahren und system zur analyse einer umgebung eines mobilen endgeräts - Google Patents
Verfahren und system zur analyse einer umgebung eines mobilen endgerätsInfo
- Publication number
- EP3391071A1 EP3391071A1 EP16791602.2A EP16791602A EP3391071A1 EP 3391071 A1 EP3391071 A1 EP 3391071A1 EP 16791602 A EP16791602 A EP 16791602A EP 3391071 A1 EP3391071 A1 EP 3391071A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mobile terminal
- data
- signal
- rssi
- environment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
- G01S11/06—Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements
-
- 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
-
- 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
- G01S5/02522—The radio-map containing measured values of non-radio values
-
- 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
-
- 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
-
- 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
- G01S5/0257—Hybrid positioning
- G01S5/0263—Hybrid positioning by combining or switching between positions derived from two or more separate positioning systems
- G01S5/0264—Hybrid positioning by combining or switching between positions derived from two or more separate positioning systems at least one of the systems being a non-radio wave positioning system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
-
- 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
-
- 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
Definitions
- the invention relates to a method for analyzing a
- the invention relates to a system for analyzing an environment of a mobile terminal according to the preamble of patent claim 9.
- Light-based indoor navigation is based on the transmission of a unique light ID (LID) that can be received and detected using a mobile device.
- LID unique light ID
- the LID is in the luminous flux - invisible to the human
- the LID is again filtered out of the light and demodulated at the receiver.
- the LID itself can directly contain position information, or it can be determined indirectly via a lookup table. In the lookup table, an assignment of LID and
- Position information instead.
- any additional metadata can be linked to the LID.
- This lookup table can be stored as an integrated part in an application that is on the mobile
- Terminal is running, or on an external server
- the lookup table can also be dynamic
- An illumination device which transmits data to a mobile terminal is known, for example, from WO 2015/148696 A1. This discloses techniques for position-based actions using light-based communication.
- Light source with the LID consists. Is used as a mobile device, for example, a mobile phone (smartphone) and this after the position query back in the bag
- the invention is based on a method for analyzing an environment of a mobile terminal by transmission
- Identification data by means of light-based communication by the illumination device, and determining
- Lighting device based on stored, with a respective mounting position of the at least one
- Lighting device correlated spatial coordinates of the Beieuchtungs pain.
- the invention is based on the finding that, for example, various wireless, radio-based systems such as WLAN or Bluetooth can be used to determine the position in buildings and thus for indoor navigation.
- the position of the transmitter WLAN access point WAC or iBeacon
- WAC wireless access point
- iBeacon iBeacon
- Signal field strength of the received signal (received signal strength RSSI)
- RSSI Received signal strength
- Positioning will be at least three different
- Transmission sources needed (trilateration).
- a unique reference measurement of an environment is performed.
- a so-called “fingerprint” is created, which means that different signal sources in the environment are detected and their signal field strength is determined, resulting in a map that reflects these different signal field lines from different sources in a location-specific manner.
- Determining the position of the receiver for example in the form of a mobile terminal (smartphone).
- the mobile terminal can thus be determined very accurately where the mobile terminal is located. This way a can
- Lighting device is off, can
- Detection unit especially in the form of a camera, off. In such a case, therefore, only the other signal sources of the environment and the stored fingerprint card for determining the respective location
- the invention is based on the further realization that the signals of the signal sources in the environment can change over time, for example, change their characteristics over their lifetime, dismantled or reinstalled.
- a reorganization of the spatial conditions can also be a major influence on the signals. How to change introduced into a room
- the method is therefore further developed by providing a respective sensor signal by at least one environmental signal sensor, obtaining environmental data from the respective sensor signal, and storing the environmental data as a function of the location coordinates of the mobile
- the creation of a fingerprint card is not a one-time operation, but is a continuous process, that is, the database is constantly updated with the most up-to-date information from the environment of a known location.
- the database is constantly updated with the most up-to-date information from the environment of a known location.
- the respective sensor signal is uniquely identifiable
- the senor signal identifier for example, via a transmitted with the sensor signal identifier or by a characteristic frequency spectrum.
- the method comprises, in a further step without availability of the identification data that can be detected via the optical detection unit, determining the location coordinates of the mobile terminal in
- Environmental signal sensor obtained environmental data.
- Detection unit and / or disabled Lighting device and / or lack of visual contact with the lighting device a position determination possible.
- the location coordinates which belong to the environment data determined in this way, can then be displayed on the mobile terminal, it being possible to provide additionally an indication of the deviation from the actual position, in particular an indication of the estimated extent of the deviation,
- Signal field strength is detected. In this way, on the basis of one or, for a higher reliability, a plurality of performed operations of determining
- Environment data also such environment data are updated in the memory at the associated location coordinates not immediately an update measurement was made.
- the method comprises detecting a periodically variable physical environment parameter for providing the sensor signal, wherein the environmental data values relating to at least one frequency and / or an amplitude of the
- Sensor signal included may be electrical and / or magnetic fields, changes in the
- Signals can thus also be included alternating signals as unique information.
- the signal fluctuates around a determinable value, the
- the alternating signals form special patterns that can help with determining the position.
- the environmental data are stored as a function of the respective time of day.
- a recording of the environmental information and the associated evaluation that is to say the acquisition of the environmental data, can thus also include time-dependent fluctuations of the information.
- it can be detected which signal source is active at which location and at what time and optionally with which signal intensity.
- the more measurements performed over a day the better the result in the resulting fingerprint card.
- this dependency can be minimized. This advantageously creates the fingerprint card as a function of the time of day. This can be done in
- signal sources are considered in the creation of the fingerprint card whose
- Operating behavior is coupled to a predetermined daily rhythm.
- the environmental data may be provided that the environmental data depending on a particular
- Fingerprint card can be used. Alternatively, the
- the method comprises the steps of checking the environmental data for the presence of a previously known ambient signal signature and displaying one of the ambient signal signature
- the environment data may be updated when an environment has changed significantly.
- a new measurement can be triggered, the old reference is not valid until further notice, it can thus be a self-learning
- Procedures are implemented. Thus, information can be generated as to how many or a few persons have stayed in one place, whether machines or electrical Devices were in use and even what kind of
- a forklift generates a different environmental signal than, for example, one
- a user of the mobile terminal for example, an indication of a
- the mobile terminal has a data connection with a data storage unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, or a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit, in particular a central processing unit,
- Data storage unit is coupled in the form of a server in a network, which is set up to manage the fingerprint card, the attributes can be transmitted to the correspondingly detected values to the data storage unit. In this way, the determined data can be provided to other mobile terminals or their users.
- a corresponding update of the fingerprint card in response to a presence of a previously known ambient signal signature can be
- the method comprises the steps of comparing environment data, in particular radio data-based environment data, with a predeterminable reference, and outputting a warning signal, if one with an intensity of the environment data
- the automatic Generated fingerprint cards can also be used to detect and report defects or failures in the environment.
- the signal sources used are often mainly for the mobile communication of data and are used only secondarily as a position information source. However, there are also signal sources which are used exclusively as position information sources, so-called (radio) beacons (example iBeacons). If a transmission source is continuously weaker, for example due to a discharged battery, or fails completely, then this information can be forwarded promptly with the exact location to a maintenance service.
- the method comprises logging results of determining the location coordinates of the mobile terminal for a
- the method comprises uniquely identifying the mobile
- Identity of the mobile terminal with which the Environment data were determined is particularly advantageous when the mobile terminal in a data connection to a central storage unit, such as a
- Network server is available on which also more mobile
- Receiving properties of the respective mobile terminal are taken into account and / or that depending on the equipment of the terminal used no corresponding
- Ambient signal sensor for the respective environmental parameters such as a magnetic field sensor, is present.
- the system becomes independent through use steadily
- This method can also be integrated automatically with this method, which would be associated with a manual acquisition with a very high expenditure of time. This concerns in particular also the problem of the
- the invention is further based on a system for analyzing an environment of a mobile terminal, comprising the mobile terminal and at least one illumination device which is designed for clear identification data assigned to the illumination device by means of light-based
- the mobile terminal is designed to place coordinates of the mobile terminal in Dependence on the identification data, acquired via an optical detection unit of the mobile terminal, with respect to the illumination device on the basis of
- Data storage unit stored to determine correlated with a respective installation position of the at least one illumination device location coordinates of the illumination device. According to the invention, the system is characterized
- the mobile terminal comprises at least one environmental signal sensor for providing a respective sensor signal, wherein the mobile terminal to
- the system is designed to obtain environmental data from the respective sensor signal, and wherein the system is adapted to store the environment data in dependence on the location coordinates of the mobile terminal and thereby update existing environmental data.
- the illumination device is designed as an LED light, which in particular comprises an LED illuminant (LED module) and an electronic operating device (ballast) for operating the LED illuminant.
- LED module an LED illuminant
- ballast an electronic operating device for operating the LED illuminant.
- Terminal may preferably be a smartphone, tablet PC, a laptop or a mobile camera-assisted detection unit, in particular for use in mobile robots.
- the system comprises a central server unit, which comprises the data storage unit and is designed for a bidirectional communication connection with the mobile terminal.
- the central server unit is not necessarily bound to a physical network component, it can of course be a virtual machine, which is implemented for example in a so-called cloud.
- the data storage unit is designed as an internal storage unit on the mobile terminal.
- the obtained environmental data can be stored directly on the mobile terminal.
- the environment data are also stored on the data storage unit, that is, on the mobile device itself.
- the data storage unit on the mobile terminal can, of course, from
- Memory of the mobile terminal and from a plug-in card, such as a micro-SD card.
- Data storage unit of the mobile terminal can be used. Particularly advantageous may be a local storage on the mobile terminal and a server-based storage
- the determination of the location coordinates of the mobile terminal can, depending on the specific embodiment of the
- Data storage unit either as central
- Terminal already done on the server unit itself or on the mobile device. It is also conceivable here to provide position-determining raw data by a server unit to the mobile terminal, wherein corresponding calculations are carried out on the mobile terminal, which finally result in the determination of the location coordinates of the mobile terminal.
- the advantage of a solution according to the invention is that, even if no visual connection to a light-based navigation system is available, it is always possible to resort to the latest fingerprint maps and thus the best possible non-light-based position determination
- Positioning systems transmitted This is always based on the most accurate location system, based on a reference measurement. Other systems, which do not use this exact location system, can thus fall back on the generated reference cards (fingerprint card).
- Show it: 1 is a simplified schematic representation of a first arrangement of a mobile terminal within the range of action of multiple signal sources,
- Radio transmitters in which the signal strength of the electric or magnetic field is reciprocal with the distance to the signal have proven to be particularly suitable
- FIG. 1 An arrangement shown in FIG. 1 comprises a mobile terminal 15, and a first signal source 11, a second signal source 12, a third signal source 13 and a fourth signal source 14.
- the four signal sources 11, 12, 13, 14 are at the corners of a Rectangle, which is covered with a rectangular coordinate grid.
- X coordinates are entered with the values XI, X2, X3, X4 to Xn, in
- Signal source 11 is assigned. In the same way, a corresponding set of second lines results in the same
- Signal strength curve which is correlated with the second signal source 12, namely RSSI_12_1, RSSI_12_2, RSSI_12_3,
- a third set of lines with the same signal strength curve results, which is assigned to the third signal source 13, which comprises the lines RSSI_13_1, RSSI_13_2, RSSI_13_3, RSSI_13_4.
- RSSI_14_1, RSSI_14_2, RSSI_14_3, RSSI_14_4 the assignment to the fourth signal source 14.
- a mobile terminal 15 is arranged at the coordinates X4 / Y5.
- the lines are the same
- Terminal 15 the signal of the first signal source 11 with a signal strength receivable, which in the field of
- Signal strength independent of the respective signal source 11, 12, 13, 14 each have a same range of the associated Signal field strength, in other words, for example, the second signal source 12 on the second line RSSI_12_2 receive as strong as the fourth signal source 14 on the line RSSI_14_2.
- Fig. 2 shows the same arrangement of the mobile terminal 15 within the four signal sources 11, 12, 13, 14, wherein in contrast to the illustration in Fig. 1 now a first object 21 and a second object 22 are introduced into the room with corresponding Effects on the propagation of the signals from the respective signal sources 11, 12, 13,
- the signal radiated by the first signal source 11 is impeded on the way to the mobile terminal 15 neither by the first object 21 nor by the second object 22, so that here furthermore, as already previously shown in the illustration of FIG. 1, that the first signal source 11 is received with a signal strength in the region of the line RSSI_11_5.
- the reception of the signal radiated from the third signal source 13 at the position X4 / Y5 is in the range of the line
- the first object 21 is directly between the second signal source 12 and the mobile terminal 15 and thus prevents undisturbed propagation of the signal emitted by the second signal source 12.
- the first object 21 is directly between the second signal source 12 and the mobile terminal 15 and thus prevents undisturbed propagation of the signal emitted by the second signal source 12.
- the second signal source 12 For simplicity, therefore, only three lines RSSI_12_1, RSSI_12_2,
- Item 21 in this case the signal 15 at the coordinates X4 / Y5 completely shielded (No_RSSI_12).
- the second object 22 stands directly between the fourth signal source 14 and the mobile terminal 15. Although the second object 22 is smaller than the first object 21, it is at a significantly smaller distance from the fourth signal source 14 than the first object 21 to the second signal source 12, and thus prevents more pronounced undisturbed
- Fig. 3 shows a preferred embodiment of a
- the system 30 includes a light 31, a smartphone 32 and a central server unit 34.
- the lamp 31 emits a light ID LID, which can be received by a camera 35 of the smartphone 32.
- a data connection 33 Between the smartphone 32 and the central server unit 34 there is a data connection 33.
- the smartphone 32 comprises a radio reception module 36, which is designed to
- Signal source 12 the third signal source 13 and the fourth signal source 14 to receive in the
- the smartphone 32 as shown in FIG. 3
- the radio receiving module 36 is configured to each of the received radio signals one
- the light ID LID can be transmitted to the central server unit 34, likewise the respective signal strengths RSSI_11, RSSI_12, RSSI_13,
- RSSI_14 are transmitted to the central server unit 34. In return, one of each determined
- Position information for example in the form of X-coordinates and Y-coordinates, are transmitted back to the smartphone 32.
- the smartphone 32 may be a remote one
- Memory unit 32s in the form of an internal, permanently installed memory module or an external, pluggable
- Memory modules for example in the form of an SD card, in particular in the form of a micro SD card, be equipped, which instead of the central server unit 34 for the
- Positioning provides required data. This can be realized, for example, by providing the required data in advance from the central server unit 34 have been downloaded and are now available offline, even without an existing data connection 33.
- Fig. 4 shows a preferred embodiment of a
- the execution of the individual method steps is in this case divided into a software SW32, which runs on the smartphone 32, and to a software SW34, which is executed on the central server unit 34.
- the execution begins at a start SO.
- Sl takes place from the
- the central server unit 34 determines therefrom the position of the smartphone 32, which is representative of any mobile terminal, and transmits the associated X-coordinate X and Y-coordinate Y to the
- Smartphone 32 which receives them in a third step S3 and further processed.
- step S4 the determination of environmental data.
- step S5 the determined environmental data in the form of
- step S6 all available information from the environment is detected (such as the signal field strength of present transmitters in the environment such as mobile networks, WiFi, Bluetooth, ultra-wide band, Magnetic field, geomagnetic field or
- the continuous recording of the ambient signals creates a constantly updated fingerprint card with up-to-date time, location and signal information.
- the above-mentioned disadvantage of a merely one-time measurement for creating the fingerprint card is compensated for, that changes in the environment change the signals.
- the accuracy and reliability of spatial resolution for devices that do not use light-based location improve significantly.
- Reference source for highly accurate location in buildings can be generated.
- RSSI_ 12 >> RSSI_ 12
- RSSI 14 3
- RSSI 14 Start SO first step Sl second step S2 third step S3 fourth step S4 fifth step S5 sixth step S6
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015225388.0A DE102015225388A1 (de) | 2015-12-16 | 2015-12-16 | Verfahren und system zur analyse einer umgebung eines mobilen endgeräts |
PCT/EP2016/076928 WO2017102178A1 (de) | 2015-12-16 | 2016-11-08 | Verfahren und system zur analyse einer umgebung eines mobilen endgeräts |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3391071A1 true EP3391071A1 (de) | 2018-10-24 |
Family
ID=57249810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16791602.2A Ceased EP3391071A1 (de) | 2015-12-16 | 2016-11-08 | Verfahren und system zur analyse einer umgebung eines mobilen endgeräts |
Country Status (4)
Country | Link |
---|---|
US (1) | US10613207B2 (de) |
EP (1) | EP3391071A1 (de) |
DE (1) | DE102015225388A1 (de) |
WO (1) | WO2017102178A1 (de) |
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US10097265B2 (en) | 2014-03-25 | 2018-10-09 | Osram Sylvania Inc. | Techniques for position-based actions using light-based communication |
US9479250B2 (en) * | 2014-05-30 | 2016-10-25 | Comcast Cable Communications, Llc | Light based location system |
US20150373503A1 (en) * | 2014-06-20 | 2015-12-24 | Qualcomm Incorporated | Method and apparatus for positioning system enhancement with visible light communication |
WO2016000157A1 (en) * | 2014-06-30 | 2016-01-07 | Microsoft Technology Licensing, Llc | Light based positioning |
-
2015
- 2015-12-16 DE DE102015225388.0A patent/DE102015225388A1/de active Pending
-
2016
- 2016-11-08 EP EP16791602.2A patent/EP3391071A1/de not_active Ceased
- 2016-11-08 US US16/062,633 patent/US10613207B2/en active Active
- 2016-11-08 WO PCT/EP2016/076928 patent/WO2017102178A1/de active Application Filing
Also Published As
Publication number | Publication date |
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US20180372854A1 (en) | 2018-12-27 |
WO2017102178A1 (de) | 2017-06-22 |
DE102015225388A1 (de) | 2017-06-22 |
US10613207B2 (en) | 2020-04-07 |
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