WO2016207243A1 - Procédé et système pour contrôler l'authenticité de données reçues - Google Patents

Procédé et système pour contrôler l'authenticité de données reçues Download PDF

Info

Publication number
WO2016207243A1
WO2016207243A1 PCT/EP2016/064463 EP2016064463W WO2016207243A1 WO 2016207243 A1 WO2016207243 A1 WO 2016207243A1 EP 2016064463 W EP2016064463 W EP 2016064463W WO 2016207243 A1 WO2016207243 A1 WO 2016207243A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
location
wlan
infrastructure
data packets
Prior art date
Application number
PCT/EP2016/064463
Other languages
German (de)
English (en)
Inventor
Richard Roskosch
Stefan Schwarzer
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2016207243A1 publication Critical patent/WO2016207243A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/10—Integrity
    • 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
    • H04W4/029—Location-based management or tracking services
    • 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
    • G01S5/04—Position of source determined by a plurality of spaced direction-finders
    • 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
    • G01S2205/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S2205/01—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations specially adapted for specific applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/60—Context-dependent security
    • H04W12/63—Location-dependent; Proximity-dependent

Definitions

  • the invention relates to a method for verifying the authenticity of transmitted or received data according to the preamble of claim 1.
  • the invention relates to moving ⁇ chen further purpose a system according to the preamble of the claim. 4
  • Encryption however, reaches its limits when third parties learn the network password. This could be done, for example, that a third party obtains physical access to a network subscriber, so stolen, for example, a wireless sensor from the network and reads out with expertise, signal stored in said device in a corresponding form network password from the ⁇ sem device.
  • the so-called MAC address of a network participant can be simulated with comparatively little effort, so that the authenticity of a network participant in the case of a network password found out nachge ⁇ can be formed.
  • methods and systems could further improve the security of such a network by providing further possibilities for authentication of the individual communication partners. In the best case should caused by such methods and systems have little or no additional cost to ⁇ .
  • Another problem could be jamming, which interfere with a radio network deliberately or due to technical malfunction.
  • WLAN jammers or "WLAN blockers”
  • WLAN jammers or "WLAN blockers”
  • WLAN blockers with suitable high-frequency signals
  • This circumstance can be determined with common means and, for example, by means of the evaluation of information from various so-called access points, a simple way of localizing the
  • Jammers are executed, but lacks an elegant Lö ⁇ solution for rapid localization of the jammer.
  • the object of the present invention starting from a method and a system with corresponding infrastructure components of the type mentioned in the introduction, is to improve them in such a way that the above-described problems are solved or at least improved and cause little or no additional expense and expense or additional, are offered in industrial environments well usable additional functionali ⁇ activities.
  • the solutions have the fundamental advantage that they solve at least some of the problems mentioned or at least improve.
  • they provide additional functions such as a Ortungsfunkti ⁇ on that can be used well in an industrial environment advantageously at comparatively low additional Auf jointn.
  • the inventive step lies in the elegant extension of conventional, standard-compliant systems for data transmission in industrial environments to ensure the authenticity of received data with increased security by an additional test.
  • the location of the sender of transmitted data packets is determined by suitable infrastructure components in addition to the already required data transmission and checked against stored location information.
  • the mobile unit in terms of hardware or software.
  • the appropriate communica ⁇ tion partner must, for example, the WLANZugangsknoten are not necessarily changed for locating functionality.
  • the obtained location information can also be used for more
  • the installed infrastructure components When receiving a data packet sent by a radio transmitter, the installed infrastructure components also always determine the position of the transmitter in the room and compare it with corresponding data records. Among other things, the data packet is only considered valid if the determined position within the measurement accuracy matches the values stored in the data record. This results in an additional test option for the authenticity of received data via the position determination. For others it would be addressed ⁇ difficult to depose manipulated data packages and simultaneously to provoke an appropriate position value in the infra- structure components.
  • the data packets are received and decoded.
  • an arrival angle of the radiated from the transmitter signal of the relevant data packet ermit ⁇ determined.
  • the positions of the transmitters are determined with the aid of trigonometric functions.
  • the installation of redundant components antecedents ⁇ improved fail-safety and accuracy of the system.
  • the authenticity of data obtained as already described are tested using the erstoff ⁇ th position values.
  • the position data obtained can be used for other functions in the industrial environment, for example for determining the position of movable systems in space.
  • the method / system described can be used in many radio standards used in industrial environments. Examples of this are the WLAN or the
  • the nostikompo ⁇ components described in more detail in the following can be used for other functions. It is possible to detect and locate jamming devices such as "WLAN jammers” or “WLAN blockers” or equipment that is distracting due to a defect. Especially the locating function can be very helpful for a quick finding of the disturbing device.
  • the illustrated method / system is by additional functionalities such as “location” and “detection and location of jammers” and low cost, since only special infrastructure components are needed and no or little effort on the side of wireless sensors or radio actuators ⁇ exist, especially advantageous.
  • An infrastructure component 2, 3, 4, 5, here referred to as "multi-channel WLAN receiver” is installed in each of the four corners of the room 1.
  • a mobile WLAN device 6 This could be, for example is a system unit that is equipped with a WLAN radio interface 7.
  • a bidirectional data exchange 8 between the mobile WLAN device 6 and a WLAN access node 9. This data exchange is handled exactly as it would be without would take place in the space in ⁇ stallATOR components more.
  • the data packets are 10 now also received by the multi-channel wireless receiver 2, 3, 4, 5.
  • the multi-channel wireless receiver 2, 3, 4, 5 each determine an angle ⁇ , ct> 2 and so on for the direction from which the WLAN packet was received in relation to the respective reference angle, for example a 90 ° angle to the antenna surface 2, 3, 4, 5 are, for example, by a permanently installed LAN network with a central unit (not shown in detail in the figure) and transmit the sustainer ⁇ requested angle values for each received data packet 10 to a central unit. Since the position of the installed multi-channel WLAN receiver 2, 3, 4, 5 is known and their reference angle, the central unit with the help of trigonometric ⁇ rule functions easily the position 11 of mobi ⁇ len wireless device 6 in space 1 are determined. The positions of the infrastructure components 2, 3, 4, 5 and the mobile WLAN device 6 are shown in FIG.
  • the WLAN access node 9 can likewise be connected to the central unit via LAN and thus further transmit the position information together with the useful content of the data packets 10. and forward the data to higher-level units.
  • the checking of received data packets 10 for authenticity can likewise be carried out in the central unit.
  • FIG. 2 of the drawing shows an exemplary flow chart for a communication and authentication process according to the method described above.
  • the blocks 12 to 23 are for the following basic Vorgän ⁇ ge:
  • process data are retrieved and transmitted.
  • the dashed blocks in the flow chart containing at least partially steps relating to the new procedure, that is the determination of the location of the mobile wireless device and the additional check of authenticity are received, ⁇ gener data packets based on the location information. It can be easy to see that the essential steps in the communication process to be completed as well as without a ⁇ set of locating method, and that for determining the location of the mobile wireless device no additional interaction Zvi ⁇ rule the mobile wireless device and the multi-channel wireless - Recipients is required. Rather, the communication between the mobile WLAN device and the WLAN access node proceeds in the same way as without the location functionality.
  • the multichannel WLAN receivers only additionally evaluate the transmitted WLAN data packets.
  • the method itself used in the wireless multi-channel receiver for determining the angle of incidence of light incident on antennas wavefronts of a high-frequency signal to those skilled in terms such as "Angle of Arrival (AoA) Estimation” or “Angle of Arrival (AoA) Measurement” be ⁇ known.
  • the present case relates exclusively to the application of the obtained angle information for the purpose of authentication of received radio data packets with the
  • the WLAN access node 9 could, under certain circumstances, determine that disturbing data packets are being dropped or that requests from communication partners remain unanswered and report this to the central unit.
  • the multichannel WLAN receivers 2, 3, 4, 5, however, can receive interfering signals and also the angle to the source of interference with suitable internal design, for example as devices for receiving various high-frequency signals in the appropriate frequency range, even if the signals are not standard compliant determine. Both information can be transmitted to the central unit 5 of each of the multi-channel wireless receiver 2, 3, 4, where, in turn, determines a position 11 in the room 1 and a corresponding message can be issued to a übergeord ⁇ designated unit. By transmitting location information, the jammer within the room 1 can be located much faster than would be the case, for example, in the detection of interference in the area of a WLAN access node 9.
  • the described method and system can also be used with other radio standards, such as
  • Figure 1 an exemplary inventive system on the
  • FIG. 2 shows an exemplary flow chart according to the invention for a communication and authentication process; and further: Figure 3: a system with important parts of the system and mobile
  • Figure 4 a multi-channel wireless receiver combined with a
  • WLAN access node as a second embodiment of the invention for use in a system according to Figure 3;
  • FIG. 5 shows a mobile control unit for production facilities and production facilities as a third exemplary embodiment of the invention for use in a system according to FIG. 3;
  • FIG 6 shows a production line according to FIG 5 with conven tional ⁇ position detection with transponders.
  • FIG. 3 similar to FIG. 1, the basic crack of a room 1 is again shown.
  • This is actually a production hall in which a number of production cells or production sections 24 are located. In these manufacturing cells sensors are related. As a result, machines or plant components 25 and so on are installed, which are equipped with WLAN radio interfaces 7.
  • the data exchange between these machines and plant parts with a higher-level unit basically takes place via the WLAN access node 9A. For redundancy reasons, the WLAN access node 9B is additionally installed.
  • two self-contained industrial trucks 26 are moving around with WLAN radio interfaces 7, which transport parts from one processing station to the next.
  • a higher-level unit also controls the self-propelled industrial trucks 26 by exchanging data with their WLAN radio interfaces 7 with the WLAN access nodes 9A and 9B, respectively in addition also from the four in Stal- Herten multichannel WLAN receivers 2, 3, 4, 5 "listened", which also in the manner described above, the current position of the industrial trucks 26 is determined.
  • This he ⁇ ffente position can now on the one hand are ge ⁇ checked for plausibility, for example in that it is determined whether the coordinate currently determined is close to the previously erstoff ⁇ th coordinate, as well as the current Positionsinfor ⁇ mation, optionally in addition to measurement data a laser scanner or the like, further processed.
  • the proposed solution with respect to the mobi ⁇ len industrial trucks 26, the security of wireless data transmission and the reliability of Ortsinformati ⁇ on, which serves as the basis for the following control commands for the industrial truck 26.
  • a jammer If in the production hall or possibly in na ⁇ hen environment a jammer are, for example because of a manipulation by a third party that makes a wireless communication in the production hall impossible, this can be recognized by an over ⁇ parent unit if the WLAN access node pass corresponding information to a higher-level unit. However, if you would like to locate the jammer then a position determined by the multichannel WLAN receivers 2, 3, 4, 5 can considerably speed up the search for the jammer. The same functionality can also be used to quickly locate devices that are faulty or disruptive, or that cause for some reason a very large amount of data on the radio interface, resulting in unnecessary latency in radio transmission or temporary failure of the radio network ,
  • the multifunctional usability of the domestic stall striving system components described above means that the cost and installation cost of such a system quickly pay off ⁇ .
  • FIG. 4 shows the upper right corner of the illustration according to FIG. 3 with the modification that is used here
  • Multi-channel WLAN receiver 4 has the same assigned to the WLAN access node 9B.
  • the respective antenna systems jeweili ⁇ gen WLAN radio interface 7 of the multi-channel wireless receiver 4 and the WLAN access node 9B are, however, kept separate in each case.
  • the combination of a multi-channel wireless receiver to Example 4 and a wireless access node, for example, 9B in the form of a single (combination) device 27 may optionally be used to reduce the cost of installation of the previously beschrie ⁇ surrounded solution. Is for a product, only this version used as Samuelsge ⁇ advises the instruction the increased complexity of the function blocks ⁇ for a wireless access point, for example 9B towards reduced costs for stock. If a WLAN access node 9 is required for the respective installation site, then the corresponding part of the system is also put into operation.
  • combination devices ⁇ 27 described is also conceivable for others, include customary in industrial environments radio interfaces in a similar manner.
  • Mobile control units similar to remote controls, sometimes also with simple or elaborate displays, are available on the market for the control of production facilities and production facilities, by means of which the corresponding settings and control commands can be made by radio or entire process programs can be set up.
  • FIG. 5 shows the present invention, a mobile control unit 28 in the environment of a manufacturing facility and / or manufacturing system 29 at two different locations of 30, 31 to Ferti ⁇ restriction device and / or production facility 29, which is equipped with a combination device 27th In FIG. 5, the area 32 allowed for the mobile control unit 28 is shown hatched.
  • the mobile control unit is 28, and thus the on ⁇ pancake, in the permitted location area 32, so the examples game on the spot 30, the plant is 29 crgeschal ⁇ tet and running.
  • the installation 29 stops for safety reasons and only resumes processing when the mobile control unit 28 returns within the marked area 32 is located.
  • the current angle ⁇ in relation to a reference angle 33 for the angle determination is hereby determined as already described be ⁇ above.
  • additional information which, for example, can supply integrated WLAN receiver components, which is is still known.
  • a rough distance information di, d2 are determined to the position of the user. Since in many applications it is only necessary for the user to be able to look at or into the plant from a certain angle and not be too far away from the plant, such a position information determined in this way seems sufficient.
  • the authenticity can also be checked by the system received data to ⁇ additionally or even a further functionality are offered on the Positionsinforma- tion.
  • the user can switch to using the same mobile Steuerumble28 of a piece of equipment 29 to a different part of the system 29, and within the respectively prescribed location area 32, for example confi ⁇ configurations perform on the respective plants 29th By delimiting various areas, the user would not need to take any additional measures to change from one plant 29 to the next.
  • FIG. 6 shows a conversion corresponding to systems already used in the technical world.
  • the transponders Tri to Tr3 are installed to delimit the permissible residence area 32.
  • the disadvantage here is that the three transponders Tri, Tr2, Tr3 must be installed at comparatively unfavorable positions.
  • reference communication partners are used in the system.
  • space conditions may, for example due to multiple reflections of the RF signal on walls and corners, result in certain deviations for the angles determined.
  • a sender can not be assigned a definite angle. Since these, known from radar system technology effects mostly refer to a single multi-channel receiver, and for redundancy reasons anyway the installation of more than two multi-channel receivers is advised, affect individual deviating angle values or individual non-deliverable angle ⁇ information mostly the overall system is not further.
  • the software in the central unit can such effects he know ⁇ and rate accordingly.
  • Additional security can be provided by the installation of further, fixed communication partners with a radio interface. At some positions in the room, these communi- cation partners and, for example in the case of a WLAN radio network, interrogated at regular intervals by the WLAN access node.
  • the position of the relevant com- described above is always determined and munikationspartners just ⁇ if compared with the record stored values. This allows the system to determine if there is a general malfunction in the wireless network. If the communication partner installed in some significant or "difficult" places, the accuracy or the uniqueness of the angle measurement in certain areas can be so by comparative de measurements are improved. Similar results obtained for the angle measurement for commu ⁇ nikationspartner no. X and sensor y signal a high probability that both are also in the same angular range.
  • radio interfaces of the reference communication partners can be standard components, which usually require no hardware or software changes, these reference communication partners are inexpensive and easy to install.
  • the fourth embodiment can achieve a further improvement of the system by an extension of the data provided by the multi-channel receivers: If, for example of the multi-channel receivers adjacent to the angular value of additional information such as the respective reception levels or even a number to classifi ⁇ If the reliability of the determined angle value, for example 1 for "very uncertain / questionable” to 5 for “very safe” is supplied, this information can be correspondingly taken into account in the central unit. Thus, a "very uncertain / questionable" ge ⁇ kenn Anlagener angle value is, for example, in the central unit easily discarded as without this additional information. Also, a current supplied reception level value may allow a certain conclusion about the distance between the transmitter and the multi-channel receiver in question, which facilitates the position determination or makes further tests for plausibility possible.
  • the method described around FIG. 1 can also be applied three-dimensionally from a number of three multichannel receivers: If the multichannel receivers are installed, for example, in a high-bay warehouse, the angle values supplied by the multichannel receivers, for example, can be used angle value per multi-channel receiver, in sliding ⁇ cher manner as described above in addition to the x and y coordinates and the height of sensors, system components, and so on determine the room.

Abstract

L'invention concerne un procédé et un système pour contrôler l'authenticité de données reçues avec un niveau de sécurité augmenté pour l'authenticité des données reçues, présentant des coûts supplémentaires nuls ou réduits, et permettant de fournir des fonctionnalités supplémentaires. Selon l'invention, la position de l'unité émettrice est déterminée et contrôlée par rapport à une information de position enregistrée au moyen de composants d'infrastructure qui, sans intervention supplémentaire des partenaires de communication, évaluent les paquets de données envoyés lors de la transmission de données à des fins de détermination de position.
PCT/EP2016/064463 2015-06-25 2016-06-22 Procédé et système pour contrôler l'authenticité de données reçues WO2016207243A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015211825.8A DE102015211825A1 (de) 2015-06-25 2015-06-25 Verfahren und System zum Prüfen der Authentizität empfangener Daten
DE102015211825.8 2015-06-25

Publications (1)

Publication Number Publication Date
WO2016207243A1 true WO2016207243A1 (fr) 2016-12-29

Family

ID=56511533

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/064463 WO2016207243A1 (fr) 2015-06-25 2016-06-22 Procédé et système pour contrôler l'authenticité de données reçues

Country Status (2)

Country Link
DE (1) DE102015211825A1 (fr)
WO (1) WO2016207243A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021006297A1 (de) * 2021-12-21 2023-06-22 Mercedes-Benz Group AG Vorrichtung zur Absicherung der Kommunikation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728959A (en) * 1986-08-08 1988-03-01 Ventana Sciences Inc. Direction finding localization system
US20030232598A1 (en) * 2002-06-13 2003-12-18 Daniel Aljadeff Method and apparatus for intrusion management in a wireless network using physical location determination
US20140253390A1 (en) * 2013-03-05 2014-09-11 Yaron Alpert Passive wireless transmitter authentication used for receiver location determination

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7346358B2 (en) * 2002-06-24 2008-03-18 Intel Corporation Logical boundaries in communications networks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728959A (en) * 1986-08-08 1988-03-01 Ventana Sciences Inc. Direction finding localization system
US20030232598A1 (en) * 2002-06-13 2003-12-18 Daniel Aljadeff Method and apparatus for intrusion management in a wireless network using physical location determination
US20140253390A1 (en) * 2013-03-05 2014-09-11 Yaron Alpert Passive wireless transmitter authentication used for receiver location determination

Also Published As

Publication number Publication date
DE102015211825A1 (de) 2016-12-29

Similar Documents

Publication Publication Date Title
DE60304494T2 (de) Räumliche grenzzugangskontrolle für drahtlose netzwerke
EP2601760B1 (fr) Procédé, dispositif et système pour l'adressage d'appareils de fonctionnement destinés à des sources lumineuses
EP3177973B1 (fr) Procédé de fonctionnement d'un automate de sécurité et réseau d'automatisation ayant un tel automate de sécurité
DE102009021783A1 (de) Lokalisierungssystem und Verfahren zur Lokalisierung wenigstens eines mobilen Telekommunikationsgeräts mittels Kurzstreckenfunk, insbesondere Bluetooth
WO2016001088A1 (fr) Système de commande d'un appareil médical et procédé pour assurer un fonctionnement fiable d'appareils médicaux au moyen dudit système de commande d'appareil médical
EP2840554B1 (fr) Procédé et capteur radio pour la localisation d'une unité embarquée
EP3146355B1 (fr) Système d'appareils médicaux et procédé pour localiser des appareils médicaux et des unités de commande mobiles de ce système d'appareils médicaux
EP2689615A1 (fr) Système et procédé de localisation radio d'un terminal
WO2016207243A1 (fr) Procédé et système pour contrôler l'authenticité de données reçues
EP2713305B1 (fr) Procédé et appareil d'écriture/de lecture pour la configuration d'un appareil d'écriture/de lecture dans un agencement RFID
DE102018207658B4 (de) Verfahren zum Verarbeiten von Sensordaten, Anordnung zur Verarbeitung von Sensordaten, Anordnung zum Verarbeiten einer Anfrage eines Ego-Fahrzeugs für ein weiteres Fahrzeug, Rechner zum Verarbeiten von Sensordaten sowie Rechner zum Verarbeiten einer Anfrage eines Ego-Fahrzeugs für ein weiteres Fahrzeug
WO2017129188A1 (fr) Procédé et système de contrôle d'accès
DE102010023960A1 (de) Verfahren und Vorrichtung zur Ortsbestimmung
EP2044788A1 (fr) Procédé et dispositif pour le fonctionnement de terminaux mobiles de communication
EP2063337A2 (fr) Procédé de reconnaissance de sources de perturbation pour dispositifs d'automatisation et unité de reconnaissance de sources de perturbation correspondante
EP3522605A1 (fr) Système de radiocommunication pour un système d'automatisation industrielle et procédé de fonctionnement d'un système de radiocommunication
DE102009039879B4 (de) Verfahren zum Steuern der Freigabe einer Einrichtung oder eines Dienstes, als Master ausgebildete Sendeempfangseinrichtung sowie System mit derartiger Einrichtung
EP3126991A1 (fr) Module d'interface électrique
WO2013120527A1 (fr) Ensemble réseau radio pour un édifice
EP3685518A1 (fr) Émetteur-récepteur avec un capteur pour le calcul d'une information de position d'une antenne d'un autre émetteur-récepteur
WO2018145826A1 (fr) Procédé de détermination de la position d'un appareil ble mobile
AT524385B1 (de) Validierung einer Fahrzeugposition
DE102011075957A1 (de) Verfahren und System zur drahtlosen Datenübertragung sowie dafür ausgebildete Vorrichtung
EP2056535A2 (fr) Liant et procédé destinés à la préparation d'un accès à un réseau de traitement de données pour un dispositif de traitement de données
DE102008047212A1 (de) Verfahren zur rechnergestützten Lokalisation eines mobilen Objekts

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16741868

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16741868

Country of ref document: EP

Kind code of ref document: A1