WO2022025602A1 - Procédé et système de détection d'intention d'utilisateur dans des systèmes à ultralarge bande - Google Patents

Procédé et système de détection d'intention d'utilisateur dans des systèmes à ultralarge bande Download PDF

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Publication number
WO2022025602A1
WO2022025602A1 PCT/KR2021/009752 KR2021009752W WO2022025602A1 WO 2022025602 A1 WO2022025602 A1 WO 2022025602A1 KR 2021009752 W KR2021009752 W KR 2021009752W WO 2022025602 A1 WO2022025602 A1 WO 2022025602A1
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WO
WIPO (PCT)
Prior art keywords
uwb
distance
angular position
filtered
devices
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PCT/KR2021/009752
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English (en)
Inventor
Aniruddh Rao Kabbinale
Ankur Bansal
Karthik Srinivasa Gopalan
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Samsung Electronics Co., Ltd.
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Application filed by Samsung Electronics Co., Ltd. filed Critical Samsung Electronics Co., Ltd.
Publication of WO2022025602A1 publication Critical patent/WO2022025602A1/fr

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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
    • H04W4/026—Services making use of location information using location based information parameters using orientation information, e.g. compass
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/765—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with exchange of information between interrogator and responder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

Definitions

  • the present invention relates to ultra wide band (UWB) system and more specifically the invention relates to a method and a UWB device for detecting user intent and performing an action accordingly.
  • UWB ultra wide band
  • an ultra wide band (UWB) enabled device is in proximity of many UWB devices.
  • a user of a UWB device may want to communicate or perform an action with another UWB device in a surrounding of UWB device.
  • the UWB device detects an intention of the user to interact with another UWB device.
  • Detecting the user intent comprises determining another UWB device from the number of UWB device in the surrounding with which the user wants to communicate or perform the action.
  • the UWB device performs ranging with all the other UWB devices present in the surrounding by making angle and distance measurements.
  • the distance measurements are recorded by performing ranging. Further simple functions are defined to identify if a UWB device is within a threshold distance or to identify if the UWB device has a least distance compared to others UWB device in the surroundings. Similarly, the angle measurements are recorded by performing ranging. Further, simple functions are defined to identify if the UWB device is within a threshold angle or to identify if the UWB device has least angle measurement compared to other UWB devices in the surrounding.
  • the existing methods are based on distance only or angle only and hence have lot of false positives. The existing art do not disclose any mechanism for a combination of the distance measurement and the angle measurement or assigning weightage to the distance measurement and the angle measurement for detecting the intent of the user.
  • Fig. 1 is a schematic diagram illustrating a use case of a UWB enabled phone being used for payment at a PoS terminal, with multiple PoS terminals around, according to a prior art.
  • a user (102) of the mobile phone wishes to do payment at a counter in a shop using proximity based UWB Payments Service on the mobile phone, wherein the mobile phone is a UWB enabled phone (104).
  • the user (102) brings UWB enabled phone (104) near the point of sale (PoS) terminal (106), points to it and wishes to do payment.
  • the UWB enabled phone (104) performs ranging.
  • the UWB enabled phone (104) may connect to a wrong PoS machine and may not do a successful payment at the intended PoS terminal.
  • Fig. 2 is a schematic diagram illustrating another use case of the UWB enabled phone being used for in-home device control, according to the existing arts as disclosed herein.
  • the user (102) wishes to use the UWB enabled phone (104) as a remote control for UWB enabled TV (108) and also a UWB enabled speaker (110).
  • the user (102) now moves towards the UWB enable TV (108) and points the UWB enabled phone (104) towards the UWB enable TV (108) with an intent to control the UWB enable TV (108).
  • the UWB enabled phone (104) doesn't understand to which device the user wants to control.
  • the principal object of the embodiments herein is to provide a method and device for user intent detection in Ultra Wide Band systems.
  • Another object of the embodiment herein is to use angle measurements along with distance measurements for detecting the user intent in the UWB systems.
  • Another object of the embodiment herein is to detect the user intent using a network comprising of backend servers for computation.
  • the embodiments herein discloses a method for managing ultrawide band (UWB) interactions in an UWB system comprising a plurality of UWB devices, wherein the method comprises: performing ranging, by a first UWB device, with the plurality of UWB devices in a vicinity to the first UWB device the first UWB device; recording, by one of the first UWB device and a network entity, a distance and an angular position of the first UWB device relative to each UWB device from the plurality of UWB devices; selecting, by one of the first UWB device and the network entity, at least one second UWB device from the plurality of UWB devices based on the measured distance and the measured angular positions, wherein a user of the first UWB device intends to interact with the at least one second UWB device; and triggering, by one of the first UWB device and the network entity, an action to interact with the at least one second UWB device.
  • UWB ultrawide band
  • selecting the at least one second UWB device from the plurality of UWB devices with which the user intends to interact comprises by one of the first UWB device and the network entity, the distance measurement and the angular position measurement of the first UWB device from each UWB device of the plurality of UWB devices, recorded at one of the first UWB device and network computing a weighted decision function for each UWB device of the plurality of UWB devices based on at least one of the measured distance and the measured angular positions; and selecting, by the first UWB device, the second UWB device from the plurality of UWB devices having a maximum value of the weighted decision function.
  • filtering the angle and distance measurement comprises refining, by one of the first UWB device and the network entity, the angular position of the first UWB device from each UWB device of the plurality of UWB devices.
  • computing the weighted decision function for each UWB device of the plurality of UWB devices comprises providing, by one of the first UWB device and the network the measured distance and the angular position of each of the plurality of UWB device with respect to the first of UWB device as an input to a pre-defined weighted decision function; comparing the angular position measurement of the first UWB device from each UWB device of the plurality of UWB devices with a threshold angular measurement, indicating using an indicator function for angle measurements, whether the angular position measurement of the first UWB device from each UWB device of the plurality of UWB devices is less than the threshold angular measurement: comparing the distance measurement of the first UWB device from each UWB device of the plurality of UWB devices with a threshold angular measurement, indicating, by one of the first UWB device and the network entity, using an indicator function for distance measurements, whether the distance measurement of the first UWB device from each UWB device of the plurality
  • the method comprises receiving, by the first UWB device a feedback from the user for the action triggered. Further, filter parameters and ranging parameters are tuned based on the action triggered and the received feedback.
  • the embodiments herein discloses a method for managing ultra wide band (UWB) interactions by a first UWB device among a plurality of UVB devices in a UWB system, the method comprising: identifying an angular position and a distance of each of the plurality of UWB devices in a vicinity to the first UWB device by performing a ranging with each of the plurality of UWB devices; selecting a second UWB device among the plurality of UWB devices based on the distance and the angular position of each of the plurality of UWB devices; and triggering an action to interact with the second UWB device.
  • UWB ultra wide band
  • the embodiments herein discloses an apparatus for managing ultra wide band (UWB) interactions in a first UWB device among a plurality UWB devices in a UWB system, the apparatus comprising: a transceiver; and at least one processor coupled to the transceiver, wherein the at least one processor is configured to: identify an angular position and a distance of each of the plurality of UWB devices in a vicinity to the first UWB device by performing a ranging with each of the plurality of UWB devices, select a second UWB device among the plurality of UWB devices based on the distance and the angular position of each of the plurality of UWB devices, and trigger an action to interact with the second UWB device.
  • UWB ultra wide band
  • the embodiments herein discloses an apparatus for managing ultra wide band (UWB) interactions in a server in a UWB system, the apparatus comprising: a transceiver; and at least one processor coupled to the transceiver, wherein the at least one processor is configured to: identify a distance and an angular position of each of a plurality of UWB devices in a vicinity to the first UWB device by performing a ranging with each of the plurality of UWB devices, select a second UWB device among the plurality of UWB devices based on the distance and the angular position of each of the plurality of UWB devices, and trigger an action to interact with the second UWB device.
  • UWB ultra wide band
  • Fig. 1 is a schematic diagram illustrating a use case of a UWB enabled phone being used for payment at a PoS terminal, with multiple PoS terminals around, according to a prior art;
  • Fig. 2 is a schematic diagram illustrating another use case of the UWB enabled phone being used for in-home device control, according to the existing arts as disclosed herein;
  • Fig. 3 is schematic diagram illustrating a UWB system for detecting user intent for interaction with a UWB device, according to an embodiment as disclosed herein;
  • Fig. 4 is a flow diagram illustrating the method of detecting the user intent in the UWB systems by a user intent controller, according to an embodiment as disclosed herein;
  • Fig. 5 is an example illustrating usage of the UWB enabled phone for speed gate entry in railway station/ stadium, according to an embodiment as disclosed herein.
  • circuits may, for example, be embodied in one or more semiconductor chips, or on substrate supports such as printed circuit boards and the like.
  • circuits constituting a block may be implemented by dedicated hardware, or by a processor (e.g., one or more programmed microprocessors and associated circuitry), or by a combination of dedicated hardware to perform some functions of the block and a processor to perform other functions of the block.
  • a processor e.g., one or more programmed microprocessors and associated circuitry
  • Each block of the embodiments may be physically separated into two or more interacting and discrete blocks without departing from the scope of the disclosure.
  • the blocks of the embodiments may be physically combined into more complex blocks without departing from the scope of the disclosure.
  • the embodiments herein provide a method and a UWB system for user intent detection.
  • the proposed invention discloses performing a ranging by a first UWB device with all UWB devices present in a vicinity or a coverage of the first UWB device. Further, the first UWB device records a distance measurement and an angle measurement of each UWB device in the vicinity with respect to the first UWB device. A value of the decision function is obtained for each UWB device present in the vicinity of the first UWB device. An indicator function based on the angle measurements and another indicator function based on the distance measurement are determined. Further based on the indicator functions the UWB device having the highest value of the decision function is selected as the UWB device with which the user intends to interact Based on. The output of weighted decision function and the selected UWB device, the user intent is determined and a decision on user interaction is made.
  • the proposed method and system takes into consideration both the angle measurement and the distance measurement by defining the decision function as a weighted sum of the two indicator functions corresponding to the distance measurement and the angle measurement, thereby avoiding false positive determination of the user intent.
  • Fig. 3 is schematic diagram illustrating a UWB system for detecting user intent for interaction with a UWB device in the UWB system.
  • the UWB system (300) comprises a first UWB device (310) surrounded by a plurality of UWB devices (320a-320c). As seen in fig. 3 the plurality of UWB devices (320a-320c) comprises a UWB enabled TV (320a), a UWB enabled mobile phone (320b) and a UWB enabled speaker (320c).
  • the UWB system (300) is connected to a network entity and wherein the network entity is for example but not limited to a backend server and a cloud.
  • the network entity may include at least one processor and a transceiver.
  • the first UWB device (310) and the plurality of UWB devices (320a-320c) may be, for example, but not limited, to a mobile device, a smart watch, a cellular phone, a smart phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, an internet of things (IoT) device, an artificial intelligent (AI) device or the like.
  • a mobile device a smart watch, a cellular phone, a smart phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, an internet of things (IoT) device, an artificial intelligent (AI) device or the like.
  • PDA personal digital assistant
  • IoT internet of things
  • AI artificial intelligent
  • the first UWB device (310) is a mobile device and includes a user intent controller (312), a memory (314), a processor (316) and a communicator (318).
  • the user intent controller (312) of the first UWB device (310) performs ranging with the plurality of UWB devices (320a-320c), wherein the plurality of UWB devices (320a-320c) are in the surrounding of the first UWB device (310) in the UWB environment (300) and are in a coverage area of the first UWB device (310).
  • the user intent controller (312) measures and records a distance of the first UWB device (310) from each of the plurality of UWB devices (320a-320c) and an angle the first UWB device (310) from each of the plurality of UWB devices (320a-320c).
  • a filter in the user intent controller (312) filters the angle and distance measurements of the plurality of UWB devices with respect to the first UWB device (310).
  • filtering of the distance and angle measurements are done by a simple Kalman filter.
  • For distance - a known uncertainty/variance of X cm is considered for filter design.
  • For angle - a known uncertainty of Y degree is considered for filter design.
  • filtering of distance and angle measurements are done by a simple moving average filter, with order m for distance and order n for angle.
  • the user intent controller (312) defines a weighted decision function of the angle measurement and the distance measurement based on an angle measurement indicator function and a distance measurement indicator function.
  • the distance measurement indicator function is a minimum indicator function.
  • the angle measurement indicator function is a minimum indicator function, wherein
  • the user intent controller (312) selects the UWB device from the plurality of UWB devices having a highest value of the weighted decision function.
  • the user intent controller (312) determines an action to be performed by the first UWB device (310) with the selected UWB device.
  • a feedback unit/block then receives a feedback from user once the action is triggered. Based on the feedback received from the user, and based on the current ranging measurements in the database and other related data, the following: filter parameters, weight parameters and ranging parameters are auto tuned before start of next round of measurements.
  • the filter parameters may be for example but not limited to an order of the filter, and a type of the filter.
  • the ranging parameters may be for example but not limited to a frequency of ranging, and a technique of ranging.
  • a UWB device is to be determines which user intends to control.
  • the steps for determining the UWB device which the user intends to control are as follows:
  • the weighted decision function for user in ranging round is defined as below:
  • Each of the weights, and may be simple number indicating weight of distance and angle measurements respectively.
  • the weights may also be defined as an evaluation of a complex mathematical function of various measurements and threshold values.
  • the distance measurement indicator function is given by
  • the intended device is the device for which the above decision function has highest value among all devices.
  • the user intent to interact with identified device or intends no new interaction is determined. Further, an action is triggered if the user intends to interact with selected UWB device.
  • a feedback from the user, the available ranging measurements in the database and other related data, filter parameters, weight parameters and ranging parameters are auto tuned before start of next round of measurements.
  • the user intent controller (312) is implemented by processing circuitry such as logic gates, integrated circuits, microprocessors, microcontrollers, memory circuits, passive electronic components, active electronic components, optical components, hardwired circuits, or the like, and may optionally be driven by firmware.
  • processing circuitry such as logic gates, integrated circuits, microprocessors, microcontrollers, memory circuits, passive electronic components, active electronic components, optical components, hardwired circuits, or the like, and may optionally be driven by firmware.
  • the circuits may, for example, be embodied in one or more semiconductor chips, or on substrate supports such as printed circuit boards and the like.
  • the user intent controller (312) may further comprise additional sub-controller is implemented by processing circuitry such as logic gates, integrated circuits, microprocessors, microcontrollers, memory circuits, passive electronic components, active electronic components, optical components, hardwired circuits, or the like, and may optionally be driven by firmware.
  • the circuits may, for example, be embodied in one or more semiconductor chips, or on substrate supports such as printed circuit boards and the like.
  • the user intent controller (312) may include the processor (316).
  • the memory (314) stores instructions to be executed by the processor (316) for detection the user intent in the UWB system (300). In an embodiment, the memory (314) stores data measured and/or recorded after the ranging is performed.
  • the memory (314) may include non-volatile storage elements. Examples of such non-volatile storage elements may include magnetic hard discs, optical discs, floppy discs, flash memories, or forms of electrically programmable memories (EPROM) or electrically erasable and programmable (EEPROM) memories.
  • the memory 110 may, in some examples, be considered a non-transitory storage medium.
  • the term “non-transitory” may indicate that the storage medium is not embodied in a carrier wave or a propagated signal. However, the term “non-transitory” should not be interpreted that the memory (314) is non-movable. In some examples, the memory (314) can be configured to store larger amounts of information than the memory.
  • a non-transitory storage medium may store data that can, over time, change (e.g., in random access memory (RAM) or cache).
  • the memory (314) can be an internal storage unit or it can be an external storage unit of the electronic device (300), a cloud storage, or any other type of external storage.
  • the processor (316) communicates with the memory (314), the communicator (318), and the user intent controller (312).
  • the processor (316) is configured to execute instructions stored in the memory (314) for handling the monotonous alerts and to perform various processes.
  • the processor (316) may include one or a plurality of processors, may be a general purpose processor, such as a central processing unit (CPU), an application processor (AP), or the like, a graphics-only processing unit such as a graphics processing unit (GPU), a visual processing unit (VPU), and/or an artificial intelligence (AI) dedicated processor such as a neural processing unit (NPU).
  • CPU central processing unit
  • AP application processor
  • AI artificial intelligence
  • the communicator (316) is configured for communicating internally between internal hardware components and with external devices via one or more networks.
  • the communicator (316) may include a transceiver.
  • the communicator (318) includes an electronic circuit specific to a standard that enables wired or wireless communication.
  • the UWB system (300) may include less or more number of components.
  • the labels or names of the components are used only for illustrative purpose and does not limit the scope of the invention.
  • One or more components can be combined together to perform same or substantially similar function to detecting the user intent in the UWB system (300).
  • Fig. 4 is a flow diagram (400), illustrating the method of detecting the user intent in the UWB systems (300), according to an embodiment as disclosed herein.
  • the flow 400 discloses performing ranging by the first UWB device (310) with each of the plurality of UWB devices (320a-320b).
  • the ranging is performed multiple times by the first UWB device (310) and for each ranging round all the steps of the flow 400 is executed.
  • the flow discloses recording the angle measurement and distance measurement of the each of the plurality of UWB devices (320a-320b) by the first UWB device (310) in response to the ranging at step 402.
  • the measurements obtained after each ranging round may be different or may be similar.
  • the flow discloses filtering the recorded angle and distance measurements.
  • Filtering the recorded angle and distance measurements comprises removing noise based from the recorded angle and distance measurements.
  • the weighted decision function for each of the plurality of UWB devices is determined after defining the weighted decision function as a weighted sum of the angle measurement indicator and the distance measurement indicator.
  • the UWB device from the plurality of UWB devices having the value of the weighted decision function is selected as the UWB device with which the user intends to interact.
  • the angle measurement indicator function and the distance measurement indicator function are defined and based on the functions the UWB device is selected.
  • the flow 400 discloses checking whether the selected UWB device in the current ranging round is different than the UWB device selected in the previous ranging round.
  • the flow 400 proceeds to 414 in response to determining that the selected UWB device in the current ranging round is different from the UWB device selected in the previous ranging round.
  • the flow 400 proceeds to step 416 in response to determining that the selected UWB device in the current ranging round is same as the UWB device selected in the previous ranging round.
  • the flow 400 discloses determining that the user wants to interact with the selected device and triggering the determined action with the selected device.
  • the flow 400 discloses determining that the user does not wants to interact with the selected device. Further at step 416, the feedback is received from the feedback block.
  • step 418 the feedback data is received from step 414 and 416.
  • step 420 the filter parameters and the ranging parameters are tuned based on the feedback.
  • Step 420 passes the tune filter parameters and ranging parameters for weighted decision function computation.
  • Step 424 is a database comprising ranging data obtained from the plurality of UWB devices (320).
  • Step 426 is a timer for expiry of ranging round.
  • Fig. 5 is an example illustrating usage of the UWB enabled phone for speed gate entry in railway station/ stadium, according to an embodiment as disclosed herein.
  • the proposed method solves the problem of the problem in the following steps.
  • the UWB enabled speed gate (506) is opened.
  • the proposed method and device saves time and effort of the user by accurately detecting the user intent and triggering the required action.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

Les modes de réalisation de la présente invention concernent un procédé de gestion d'interactions à ultralarge bande (UWB), le procédé comprenant l'identification d'une position angulaire et d'une distance de chacun de la pluralité de dispositifs UWB à proximité du premier dispositif UWB par réalisation d'une mesure de distance avec chacun de la pluralité des dispositifs UWB ; la sélection d'un second dispositif UWB parmi la pluralité de dispositifs UWB sur la base de la distance et de la position angulaire de chacun de la pluralité de dispositifs UWB ; et le déclenchement d'une action pour interagir avec le second dispositif UWB.
PCT/KR2021/009752 2020-07-28 2021-07-28 Procédé et système de détection d'intention d'utilisateur dans des systèmes à ultralarge bande WO2022025602A1 (fr)

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IN202041032343 2021-07-20

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080204322A1 (en) * 2003-11-03 2008-08-28 Gordon Kenneth Andrew Oswald Determining Positional Information
US20080259896A1 (en) * 2005-08-09 2008-10-23 Zafer Sahinoglu Device, Method And Protocol For Private Uwb Ranging
US20090055123A1 (en) * 2005-03-02 2009-02-26 Nxp B.V. Distance based association for ultra wide band (uwb) wireless personal area network (pan) devices
KR101343982B1 (ko) * 2012-12-06 2013-12-24 성균관대학교산학협력단 Ｄｓ－ｕｗｂ 신호를 이용한 거리 측정 방법 및 장치
US20200106877A1 (en) * 2018-09-28 2020-04-02 Apple Inc. Ranging between mobile devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080204322A1 (en) * 2003-11-03 2008-08-28 Gordon Kenneth Andrew Oswald Determining Positional Information
US20090055123A1 (en) * 2005-03-02 2009-02-26 Nxp B.V. Distance based association for ultra wide band (uwb) wireless personal area network (pan) devices
US20080259896A1 (en) * 2005-08-09 2008-10-23 Zafer Sahinoglu Device, Method And Protocol For Private Uwb Ranging
KR101343982B1 (ko) * 2012-12-06 2013-12-24 성균관대학교산학협력단 Ｄｓ－ｕｗｂ 신호를 이용한 거리 측정 방법 및 장치
US20200106877A1 (en) * 2018-09-28 2020-04-02 Apple Inc. Ranging between mobile devices

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