EP4500493A1 - Verfahren zum betreiben eines authentifizierungssystems sowie authentifizierungssystems mit einer vielzahl von uwb-antennen - Google Patents
Verfahren zum betreiben eines authentifizierungssystems sowie authentifizierungssystems mit einer vielzahl von uwb-antennenInfo
- Publication number
- EP4500493A1 EP4500493A1 EP23751625.7A EP23751625A EP4500493A1 EP 4500493 A1 EP4500493 A1 EP 4500493A1 EP 23751625 A EP23751625 A EP 23751625A EP 4500493 A1 EP4500493 A1 EP 4500493A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- uwb
- authentication
- authentication device
- portable
- vehicle
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
- G07C2009/00555—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks comprising means to detect or avoid relay attacks
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
- G07C2209/60—Indexing scheme relating to groups G07C9/00174 - G07C9/00944
- G07C2209/63—Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
- G07C2209/60—Indexing scheme relating to groups G07C9/00174 - G07C9/00944
- G07C2209/63—Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle
- G07C2209/64—Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle using a proximity sensor
Definitions
- the invention relates to a method for operating an authentication system of a vehicle for authenticating a portable authentication device, in particular an ID transmitter, with a plurality of UWB modules each having at least one UWB antenna being provided on the vehicle side.
- the invention relates to an authentication system with which an authentication of a portable authentication device, in particular an ID transmitter, can be carried out relative to the vehicle in order to enable vehicle functions for an operator who carries the portable authentication device, in particular the ID transmitter, with him.
- DE 10 2017 109293 A1 or US 11,277,742 B2 which comes from the same patent family, teaches a method and an associated system in which radio communication takes place one after the other between the ID transmitter or portable authentication device and various UWB antennas and the signal transit time is evaluated in a central control unit.
- the method provides that an authentication system of a vehicle is operated in order to authenticate a portable authentication device and in particular a portable ID transmitter to the vehicle.
- the authentication serves the purpose of releasing a vehicle function for an operator who, in particular, is carrying the portable authentication device or the portable ID transmitter or is approaching it.
- the authentication system includes the portable authentication device, which is designed in particular as a portable ID transmitter, and a vehicle-side authentication arrangement.
- the authentication arrangement includes a plurality of UWB modules, each with at least one and preferably exactly one UWB antenna.
- the authentication arrangement or the UWB modules is connected to a vehicle-side control device, which is in particular an ECU, which can be designed to control the authentication arrangement to carry out the method.
- the UWB module itself or a unit formed by the UWB module and the control device or the vehicle-side authentication arrangement can also be a control unit (ECU) or integrated into one.
- ECU control unit
- a portable authentication device is preferably understood to mean that it can be moved relative to the vehicle-side authentication arrangement.
- the portable authentication device can be a key or "smart key", a mobile phone, a fob or “smart fob” but also a stationary transmitter, which, for example, is fixed, i.e. stationary, on or in a garage, a charging station or a petrol pump is installed.
- the present invention is distinguished in particular by the fact that a large number of UWB modules, each with at least one UWB antenna, are used, which, however, are not processed or used according to a preselection or according to a list, which only still needs to be determined. Rather, all available or existing UWB modules of the authentication arrangement are used or several UWB modules are used according to predetermined and unchangeable rules, for which it is not necessary signal strengths or the like must be taken into account during the actual communication. Furthermore, at least the determination of the distance is not carried out centrally in a central control device, but rather decentrally in each of the UWB modules.
- the UWB modules do not have to be selected according to a list that has yet to be determined or according to signal strengths that have yet to be determined and, accordingly, multiple communication attempts do not have to be made first, this results in faster authentication.
- the distance determination is also integrated into the respective UWB module, so that the distance determinations can be done in parallel and do not have to be done slowly one after the other or in parallel with enormous computing effort in a central control device. As a result, processing in the vehicle-side control device can be simplified accordingly.
- the simultaneous use of a large number of UWB modules also results in increased reliability and therefore fault tolerance and resilience.
- UWB modules can be used for each run.
- a first and second UWB module can be used in a first run
- the first and a third UWB module in a second run
- the second and third UWB modules in a third run.
- all three UWB modules can still be used.
- one of the UWB modules could be used in each of the following three runs.
- the assignment of which UWB module is used in which run is in particular fixed or determined by the fixed list or the fixed rules.
- Another aspect of the method according to the invention is based on the use of ultra-wideband communication.
- UWB radio signals ultra-wideband radio signals
- market-ready transceivers have only recently become available for use.
- Ultra-wideband technology is a short-range radio communication that is based on sending short signal pulses that cover a large number of frequencies within a wide frequency bandwidth.
- the breadth of the frequency ranges covered depends in particular on the regulatory requirements of the relevant territorial area.
- a disadvantage of UWB communication in relation to established LF and/or HF communication is the comparatively high energy requirement of many currently available transceivers suitable for UWB communication.
- UWB communication has the fundamental advantage that, based on the emission of pulses, a distance determination is carried out using a transit time-based approach, which is often referred to as the time-of-flight method.
- the distance between a respective UWB antenna and the portable authentication device or the ID transmitter can be determined by sending a UWB signal from the respective UWB antenna to the portable authentication device, and a UWB transceiver of the portable authentication device answers this and a unit coupled to the UWB antenna in the respective UWB module, for example a control means, evaluates the detected response signal. This happens by evaluating the time elapsed between sending and receiving.
- the distance to the authentication device, the processing time within the authentication device and the distance from the authentication device to the respective UWB antenna are taken into account. If, as in this example, the transit time is evaluated on the vehicle side, only the processing time within the authentication device on the vehicle side, i.e. in particular in each UWB module, has to be stored or can be accessed from each UWB module, so that a corresponding correction of the time measured on the vehicle side between sending the UWB -Signal and reception of the UWB response can be made.
- UWB signals Another advantage of using UWB signals is that due to the large number of frequencies used Shadowing of the signals is very unlikely. This is because there is a high probability that there will always be a line of sight between the transmitter and receiver for at least some of the frequencies used at the same time. One reason for this is that diffraction effects or reflections can be expected for some frequencies.
- a respective UWB antenna is part of a respective UWB module, which can in particular be a UWB transceiver. This allows for a compact structure and simple configuration.
- the distance or transit time of the UWB signal is smaller than a predetermined maximum distance or transit time, it can be assumed on the vehicle side that no extension of the bidirectional UWB communication carried out has been carried out.
- the maximum distance or transit time can, depending on security needs, be adjusted in such a way that, on the one hand, a sufficiently high accuracy of the distance determination is possible, and on the other hand it can be assumed that the UWB signal has been compromised within the recorded maximum distance or transit time can be excluded or largely excluded.
- LF and/or HF and/or BLE signals can also be used to determine the distance, with, for example, a corresponding interface being assigned to some of the UWB modules and preferably to each UWB module, which is also integral in the respective UWB module can be provided.
- Another approach can, for example, be based on using data from a proximity sensor or several proximity sensors.
- a proximity sensor that is already provided in the vehicle or one that is arranged on the vehicle specifically for this purpose
- the proximity sensor outputs a proximity signal, which is detected by a control means coupled to the proximity sensor and preferably provided in at least one of the UWB modules, whereupon the control means controls the associated UWB antenna of the respective UWB module.
- a proximity sensor can also be coupled with several UWB modules. Several proximity sensors can each be assigned to one UWB module or to several UWB modules.
- a further aspect of the invention relates to an authentication system of a vehicle for authenticating a portable authentication device or an ID transmitter relative to the vehicle for releasing vehicle functions for an operator who carries the portable authentication device or the ID transmitter.
- the authentication system is designed according to the independent claim and is intended in particular to carry out the method according to the invention.
- Fig. 1 is a schematic representation of an authentication system
- FIG. 2 shows a flowchart of an exemplary process sequence of the method according to the invention
- Fig. 3 is a flowchart of an alternative process sequence of the method according to the invention.
- Fig. 1 shows an authentication system 1 with which the method according to the invention can be carried out.
- the authentication system 1 serves to authenticate a portable authentication device 2 designed as an ID transmitter to a vehicle 3.
- Fig. 1 shows an authentication system 1 with which the method according to the invention can be carried out.
- the authentication system 1 serves to authenticate a portable authentication device 2 designed as an ID transmitter to a vehicle 3.
- Fig. 1 shows an authentication system 1 with which the method according to the invention can be carried out.
- the authentication system 1 serves to authenticate a portable authentication device 2 designed as an ID transmitter to a vehicle 3.
- the portable ID transmitter 2 can be authenticated relative to the vehicle 3 so that the operator 4, who carries the portable ID transmitter 2 with him, can access vehicle functions, such as starting the vehicle 3 or a Opening one or more of the vehicle doors.
- the authentication system 1 includes a vehicle-side authentication arrangement 5.
- the authentication arrangement 5 has a large number of UWB modules 11, in the present case two UWB modules 11, each with, for example, exactly one UWB antenna 6.
- the UWB antenna 6 is in each case an integral element of the respective UWB module designed as a UWB transceiver
- the authentication arrangement 5 also has, for example, an LF interface 8 with at least one LF antenna and a proximity sensor 10 for each UWB module 11.
- an HF and/or a BLE interface could also be provided.
- the LF interface 8 is integrated into the associated UWB module 11, but could also be separate from this and only in terms of signaling with the respective UWB module.
- Module 11 can be provided coupled.
- the proximity sensor 10 is arranged, for example, on the vehicle roof, on an underbody assembly or within a door handle of, for example, the left front vehicle door or the driver's door.
- the UWB modules 11, which are designed as UWB transceivers, and the LF interfaces 8 are designed integrally with one another and are coupled to the proximity sensor 10 via a signal line.
- One UWB module 11 can each be coupled to one proximity sensor 10. As shown, a proximity sensor 10 can alternatively also be coupled to all or at least several UWB modules 11. If several proximity sensors 10 are provided, they can communicate with each other and with the UWB modules 11, for example via a bus. Furthermore, the UWB modules 11 are coupled to a motor vehicle control device 12 (ECU), which in turn can be implemented via a single signal line or a bus system.
- the motor vehicle control device 12 is suitable for controlling and monitoring a method according to the invention and its developments as a control means of the authentication arrangement.
- a determination of certain UWB modules 11 for communication can be omitted, since all or at least the UWB modules 11 provided according to the fixed list or the fixed rules are used immediately become.
- the process sequence can, for example, take place in response to an actuation of a proximity sensor 10 or as a result of pollen, although this is of secondary importance for the basic functionality of the process sequence shown.
- both the UWB antenna 6, for example se of the UWB module 11 on the left in Figure 1, as well as the UWB antenna 6, for example of the UWB module 11 on the right in FIG -Antennas 6 are controlled by the respective UWB module 11 and in particular by means of the central control device 12.
- the UWB antennas 6 send a respective UWB signal to the ID transmitter 2 simultaneously or with a minimal time delay.
- the respective UWB signal is then received by a UWB transceiver of the ID transmitter 2 and each is answered with a UWB response signal.
- the signals are received by the respective UWB antennas 6 in step 204.
- the distance or the transit time of the signal that the respective UWB signal required on the way to the ID transmitter 2 and additionally on the way back from the ID transmitter 2 is determined directly in the respective UWB module 11 and in particular without involving the vehicle-side control device 12, wherein a corresponding calculation time within the ID transmitter 2 is known to the respective UWB module 11 or can be called up by the respective UWB module 11 from the control device 12 and can therefore be calculated out of the actually recorded time period.
- step 205 the respective distance or the respective transit time is calculated by the respective UWB module 11 and optionally passed on to the central control device 12.
- the respective UWB module 11 checks directly whether the respective distance or transit time of the UWB signal is smaller than a predetermined maximum distance or transit time. The result is then passed on to the control device 12. If the determined value is less than the maximum value, the ID transmitter 2 is considered to be located within the room in which the authentication system 1 is enabling the vehicle function to be enabled (Secure Bubble). Furthermore, the signal is not considered to have been compromised, for example through a relay station attack.
- step 206 If, on the other hand, it is determined in step 206 that the distance or transit time for each UWB module 11 in particular is greater than the specified maximum distance or transit time, the procedural sequence of steps 203 to 206 is repeated starting with step 203, whereby the fixed predetermined list other UWB modules 11 or only individual UWB modules 11 can be controlled.
- Steps 203 to 206 are repeated in particular according to the predetermined list or the predetermined rules for the respective UWB antennas 6 or UWB modules 11. A termination will take place at the latest when this is provided for in the list or the rules or the ID transmitter 2 can be seen as being within the specified space.
- the procedural sequence shown in FIG. 3 differs from the procedural sequence shown in FIG. 2 in that in step 201 an approach of the operator 4 is detected by the proximity sensor 10.
- the proximity sensor 10 outputs a proximity signal to at least one and preferably both UWB modules 11 or to the central control device 12, which then forwards this to at least one and preferably both UWB modules 11.
- the control device 12 of the authentication arrangement 5 or the UWB modules 11 itself recognizes which of the proximity sensors 10 has detected the approach. In the sequence of procedures shown, the proximity sensor 10 has detected an approach, which is why steps 203 to 207 are carried out analogously to the procedure according to FIG.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lock And Its Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022124178.5A DE102022124178A1 (de) | 2022-09-21 | 2022-09-21 | Verfahren zum Betreiben eines Authentifizierungssystems sowie Authentifizierungssystems mit einer Vielzahl von UWB-Antennen |
| PCT/EP2023/071401 WO2024061520A1 (de) | 2022-09-21 | 2023-08-02 | Verfahren zum betreiben eines authentifizierungssystems sowie authentifizierungssystems mit einer vielzahl von uwb-antennen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4500493A1 true EP4500493A1 (de) | 2025-02-05 |
Family
ID=87561089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23751625.7A Pending EP4500493A1 (de) | 2022-09-21 | 2023-08-02 | Verfahren zum betreiben eines authentifizierungssystems sowie authentifizierungssystems mit einer vielzahl von uwb-antennen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4500493A1 (de) |
| DE (1) | DE102022124178A1 (de) |
| WO (1) | WO2024061520A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8930045B2 (en) * | 2013-05-01 | 2015-01-06 | Delphi Technologies, Inc. | Relay attack prevention for passive entry passive start (PEPS) vehicle security systems |
| US10043326B2 (en) | 2016-03-24 | 2018-08-07 | Ford Global Technologies, Llc | Driver indentification using vehicle approach vectors |
| DE102017109293A1 (de) | 2017-04-28 | 2018-10-31 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | Verfahren zum Betreiben eines Authentifizierungssystems und Authentifizierungssystem |
| DE102018102405A1 (de) * | 2018-02-02 | 2019-08-08 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | Kommunikationssystem eines Fahrzeugs |
| CN113692605B (zh) * | 2019-03-29 | 2024-02-20 | 株式会社电装 | 针对经由圆形极化天线接收的信号实现基于music算法的到达角确定的被动进入/被动启动系统 |
| KR102765436B1 (ko) * | 2019-05-13 | 2025-02-12 | 삼성전자주식회사 | 거리 측정 및 인증을 동시에 수행하는 방법 및 그 전자 장치 |
| US11447099B2 (en) | 2019-08-30 | 2022-09-20 | Denso International America, Inc. | Multiplexed antenna circuit network for ultra-high frequency low energy based phone as a key access to a vehicle |
| DE102020125706A1 (de) * | 2020-10-01 | 2022-04-07 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | Sensorsystem mit Kick-Sensor |
-
2022
- 2022-09-21 DE DE102022124178.5A patent/DE102022124178A1/de active Pending
-
2023
- 2023-08-02 EP EP23751625.7A patent/EP4500493A1/de active Pending
- 2023-08-02 WO PCT/EP2023/071401 patent/WO2024061520A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024061520A1 (de) | 2024-03-28 |
| DE102022124178A1 (de) | 2024-03-21 |
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Inventor name: BAER, BERND Inventor name: FISCHER, JOERG Inventor name: BACLE, ANTOINE Inventor name: FURTWAENGLER, FABIAN Inventor name: KOCH, ANDREAS |
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