DE10206774B4 - A method for selecting a communication antenna for performing a wireless communication between an identification transmitter and a transceiver device - Google Patents
A method for selecting a communication antenna for performing a wireless communication between an identification transmitter and a transceiver device Download PDFInfo
- Publication number
- DE10206774B4 DE10206774B4 DE2002106774 DE10206774A DE10206774B4 DE 10206774 B4 DE10206774 B4 DE 10206774B4 DE 2002106774 DE2002106774 DE 2002106774 DE 10206774 A DE10206774 A DE 10206774A DE 10206774 B4 DE10206774 B4 DE 10206774B4
- Authority
- DE
- Germany
- Prior art keywords
- antenna
- identification transmitter
- antennas
- communication
- quality
- 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
- B60R25/245—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user where the antenna reception area plays a role
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
- H04B7/0808—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching comparing all antennas before reception
-
- 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
- G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
- G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
- G07C2009/00793—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by Hertzian waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radio Transmission System (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Verfahren zum Auswählen einer Kommunikationsantenne zum Durchführen einer drahtlosen Kommunikation zwischen einem mobilen Identifikationsgeber und einer Sende-Empfangseinrichtung aus einer mehrere Antennen umfassenden Antennenanordnung im Rahmen eines schlüssellosen Zugangs- und/oder Fahrberechti-gungskontrollverfahrens eines Kraftfahrzeuges, wobei die Auswahl der Kommunikationsantenne anhand der Qualität der von den Antennen der Antennenanordnung empfangenen Signale des Identifikationsgebers erfolgt, dadurch gekennzeichnet, dass während des Auswahlverfahrens die Empfangsempfindlichkeit der einzelnen Antennen und/oder die Sendeleistung des Identifikationsgebers abgesenkt wird.A method for selecting a communication antenna for performing a wireless communication between a mobile identification transmitter and a transceiver from a multi-antenna antenna arrangement as part of a keyless entry and / or driving authorization control method of a motor vehicle, wherein the selection of the communication antenna based on the quality of the antennas of the antenna array received signals of the identification transmitter, characterized in that during the selection process, the reception sensitivity of the individual antennas and / or the transmission power of the identification transmitter is lowered.
Description
Die Erfindung betrifft ein Verfahren zum Auswählen einer Kommunikationsantenne zum Durchführen einer drahtlosen Kommunikation zwischen einem mobilen Identifikationsgeber und einer Sende-Empfangseinrichtung aus einer mehrere Antennen umfassenden Antennenanordnung im Rahmen eines schlüssellosen Zugangs- und/oder Fahrberechtigungskontrollverfahrens eines Kraftfahrzeuges, wobei die Auswahl der Kommunikationsantenne anhand der Qualität der von den Antennen der Antennenanordnung empfangenen Signale des Identifikationsgebers erfolgt.The invention relates to a method for selecting a communication antenna for performing a wireless communication between a mobile identification transmitter and a transceiver from a multi-antenna antenna arrangement in the context of a keyless access and / or driving authorization control method of a motor vehicle, wherein the selection of the communication antenna based on the quality the signals of the identification transmitter received by the antennas of the antenna arrangement takes place.
In Kraftfahrzeugen finden im zunehmenden Maße schlüssellose Zugangsberechtigungskontrollverfahren sowie schlüssellose Fahrberechtigungskontrollverfahren Anwendung. Zum Durchführen derartiger Verfahren sind kraftfahrzeugseitig eine Sende-Empfangseinrichtung und mehrere, eine Antennenanordnung bildende Antennen vorgesehen. Es werden generell mehrere Antennen eingesetzt, um sicherzustellen, dass bei ungünstigen Funkübertragungsstrecken das von dem Identifikationsgeber gesendete Datensignal von zumindest einer Antenne vollständig erfasst wird. Um den Rechen- und Hardwareaufwand möglichst gering zu belassen, erfolgt eine Kommunikation zwischen der kraftfahrzeugseitigen Sende-Empfangseinrichtung und dem mobilen Identifiktationsgeber zum Durchführen der Zugangs- und/oder Fahrberechtigungskontrolle nur mit einer einzigen Antenne. Zum Auswählen der im Rahmen dieser Ausführungen als Kommunikationsantenne jeweils bezeichneten Antenne, über die zwischen der kraftfahrzeugseitigen Sende-Empfangseinrichtung und dem Identifikationsgeber die Kommunikation abgewickelt werden soll, wird eine Überprüfung des von jeder Antenne der Antennenanordnung empfangenen Signals im Hinblick auf die Qualität des empfangenen Signals durchgeführt. Zu diesem Zweck wird vom Identifikationsgeber ein der Sende-Empfangseinrichtung bekanntes Datensignal zyklisch gesendet. In einem entsprechenden Zyklus wird das Empfangssignal der einzelnen Antennen auf eine Vollständigkeit des Empfangs des von dem Identifikationsgeber gesendeten Datensignals überprüft. Ein solches Verfahren ist aus
Daher liegt der Erfindung die Aufgabe zugrunde, ein eingangs genanntes Verfahren dergestalt weiter zu bilden, dass die Auswahl einer Kommunikationsantenne aus einer mehrere Antennen umfassenden Antennenanordnung möglich ist, ohne die Reaktionszeit des Gesamtsystems spürbar zu verlängern.The invention is therefore based on the object of further developing an aforementioned method such that the selection of a communications antenna from an antenna arrangement comprising a plurality of antennas is possible without appreciably prolonging the reaction time of the overall system.
Diese Aufgabe wird dadurch gelöst, dass während des Auswahlverfahrens die Empfangsempfindlichkeit der einzelnen Antennen und/oder die Sendeleistung des Identifikationsgebers abgesenkt wird.This object is achieved in that during the selection process, the reception sensitivity of the individual antennas and / or the transmission power of the identification transmitter is lowered.
Bei dieser Lösung wird aktiv eine die Qualität des Empfangssignals wiedergebender Parameter, nämlich die Empfangsempfindlichkeit der kraftfahrzeugseitigen Antennen und/oder die Sendeleistung des Identifikationsgeber aktiv abgesenkt, so dass bereits bei einem sehr kurzen Datenprotokoll des von dem Identifikationsgeber gesendeten Datensignals eine zutreffende Aussage dahingehend getroffen werden kann, welche Antenne der Antennenanordnung zur Kommunikation mit dem Identifikationsgeber in dem aktuellen Berechtigungskontrollverfahren die geeignetste im Hinblick auf eine Qualität der von dem Identifikationsgeber gesendeten Daten ist. Durch aktives Ändern eines oder beider vorgenannter Parameter wird somit bewusst eine Problemsituation für zumindest einige Antennen hinsichtlich der Qualität des von diesen Antennen empfangenen Signals erzeugt und man ist im Gegensatz zum vorbekannten Stand der Technik nicht von anderen Einflüssen abhängig, die eine Entscheidungsfindung beeinflussen könnten. Somit ist bereits nach einem oder nach zwei Abfragezyklen systemseitig erkennbar, welche Antenne der Antennenanordnung in dem aktuellen Fall als Kommunikationsantenne dienen soll.In this solution, the quality of the received signal reproducing parameters, namely the reception sensitivity of the vehicle-side antennas and / or the transmission power of the identification transmitter is actively actively lowered, so that even with a very short data protocol of the data sent from the identification signal a true statement can be made to that effect which antenna of the antenna arrangement for communication with the identification transmitter in the current authorization control process is the most suitable with regard to a quality of the data sent by the identification transmitter. By actively changing one or both of the aforementioned parameters, a problem situation is thus deliberately generated for at least some antennas with regard to the quality of the signal received by these antennas and, in contrast to the prior art, one is not dependent on other influences which could influence decision-making. Thus, after only one or two polling cycles, it can already be seen on the system side which antenna of the antenna arrangement should serve as the communication antenna in the current case.
Die Empfangsempfindlichkeit der Antennen kann beispielsweise durch einen der kraftfahrzeugseitigen Sende-Empfangseinheit zugeordneten Mikrocontroller abgesenkt werden. Zeitschlitzgesteuert können die an der Sende-Empfangseinrichtung anliegenden Antennenausgänge bezüglich des jeweils empfangenen Datensignals überprüft werden.The reception sensitivity of the antennas can be lowered, for example, by a microcontroller associated with the motor vehicle side transceiver unit. Time-slot-controlled, the antenna outputs applied to the transceiver can be checked for the respectively received data signal.
Wenn auch nicht grundsätzlich notwendig, ist es jedoch sinnvoll, wenn von dem Identifikationsgeber ein der Sende-Empfangseinheit bekanntes Datensignal gesendet wird. In diesem Fall kann eine Überprüfung der Qualität über die Vollständigkeit des empfangenen Datensignals erfolgen.Although not generally necessary, it is useful if the data transmitter sends a data signal known to the transceiver unit. In this case, a quality check can be made on the completeness of the received data signal.
Gemäß dem zweiten, jedoch nicht erfindungsgemäßen Lösungsvorschlag erfolgt die Auswahl der Kommunikationsantenne aus der Anzahl der Antennen der Antennenanordnung über ein Erfassen der Feldstärke des an jeder Antenne empfangenen und von dem Identifikationsgeber gesendeten Datensignals. Die Feldstärke des empfangenen Datensignals ist ein unbedingtes Maß für die Qualität des empfangenen Datensignals. Je höher die Feldstärke ist, desto näher und unbeeinflusster ist das von dem Identifikationsgeber gesendete Datensignal. In einer zweckmäßigen Ausgestaltung sind die beiden vorgenannten Lösungsvorschläge miteinander kombiniert, um auf diese Art und Weise ein redundantes Auswahlverfahren bereitzustellen.According to the second, but not proposed solution according to the invention, the selection of the communication antenna from the number of antennas of the antenna array takes place by detecting the field strength of the data signal received at each antenna and transmitted by the identification transmitter. The field strength of the received data signal is an unconditional measure of the quality of the received data signal. The higher the field strength, the closer and less influenced is the data signal sent by the identification transmitter. In an expedient refinement, the two aforementioned proposed solutions are combined with one another in order to provide a redundant selection method in this manner.
Aus der Beschreibung der Erfindung wird deutlich, dass mit den beanspruchten Verfahren auf einfache Weise in kurzer Zeit auch eine Antennenauswahl bei schlüssellosen Zugangsberechtigungskontroll- und/oder Fahrberechtigungskontrollverfahren durchführbar ist, insbesondere ohne eine Verlangsamung der Reaktionszeit des Gesamtsystems in Kauf nehmen zu müssen.From the description of the invention it is clear that with the claimed method in a simple manner in a short time an antenna selection in keyless access authorization control and / or driving authorization control method is feasible, especially without having to accept a slowing down of the reaction time of the entire system.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE2002106774 DE10206774B4 (en) | 2002-02-19 | 2002-02-19 | A method for selecting a communication antenna for performing a wireless communication between an identification transmitter and a transceiver device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE2002106774 DE10206774B4 (en) | 2002-02-19 | 2002-02-19 | A method for selecting a communication antenna for performing a wireless communication between an identification transmitter and a transceiver device |
Publications (2)
Publication Number | Publication Date |
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DE10206774A1 DE10206774A1 (en) | 2003-08-28 |
DE10206774B4 true DE10206774B4 (en) | 2014-07-31 |
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DE2002106774 Expired - Lifetime DE10206774B4 (en) | 2002-02-19 | 2002-02-19 | A method for selecting a communication antenna for performing a wireless communication between an identification transmitter and a transceiver device |
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DE (1) | DE10206774B4 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE10259027B4 (en) * | 2002-12-16 | 2011-07-28 | Leopold Kostal GmbH & Co. KG, 58513 | LF transmission module for a keyless usage authorization control device and method for sending wake-up and location signals in the context of a keyless usage authorization control |
JP2006028956A (en) * | 2004-07-20 | 2006-02-02 | Alps Electric Co Ltd | Passive keyless entry device |
JP4086833B2 (en) * | 2004-10-27 | 2008-05-14 | 日本電波工業株式会社 | High frequency radio control method and high frequency radio system |
JP5795732B2 (en) | 2011-12-19 | 2015-10-14 | 株式会社デンソー | Wireless communication system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19542441C2 (en) * | 1995-11-14 | 1998-04-09 | Siemens Ag | Antenna device for an anti-theft system |
DE19718764C1 (en) * | 1997-05-06 | 1998-08-27 | Siemens Ag | Theft protection system for motor vehicle |
EP0903456A1 (en) * | 1997-09-11 | 1999-03-24 | Delco Electronics Corporation | Receiver for an automotive remote keyless entry system |
DE19845649A1 (en) * | 1998-10-05 | 2000-04-06 | Kostal Leopold Gmbh & Co Kg | Keyless access/driving authorization controller for motor vehicle has mutually orthogonal antenna coils driven differently so spatial vectorial field superimposition changes continuously |
DE19839355C1 (en) * | 1998-08-28 | 2000-04-13 | Daimler Chrysler Ag | Vehicle security system with keyless go functionality |
Family Cites Families (1)
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DE903456C (en) * | 1950-10-06 | 1954-02-08 | Distillers Co Yeast Ltd | Process for the preparation of ª ‰ -methoxy-isobutyraldehyde |
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2002
- 2002-02-19 DE DE2002106774 patent/DE10206774B4/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19542441C2 (en) * | 1995-11-14 | 1998-04-09 | Siemens Ag | Antenna device for an anti-theft system |
DE19718764C1 (en) * | 1997-05-06 | 1998-08-27 | Siemens Ag | Theft protection system for motor vehicle |
EP0903456A1 (en) * | 1997-09-11 | 1999-03-24 | Delco Electronics Corporation | Receiver for an automotive remote keyless entry system |
DE19839355C1 (en) * | 1998-08-28 | 2000-04-13 | Daimler Chrysler Ag | Vehicle security system with keyless go functionality |
DE19845649A1 (en) * | 1998-10-05 | 2000-04-06 | Kostal Leopold Gmbh & Co Kg | Keyless access/driving authorization controller for motor vehicle has mutually orthogonal antenna coils driven differently so spatial vectorial field superimposition changes continuously |
Non-Patent Citations (1)
Title |
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MEINKE,H., GUNDLACH,F.W.: Taschenbuch der Hochfrequenztechnik, 3.Aufl., Berlin, u.a., Springer-Verlag, 1968, S.1526-1528; * |
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DE10206774A1 (en) | 2003-08-28 |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: LEOPOLD KOSTAL GMBH & CO. KG, 58507 LUEDENSCHEID, D Owner name: DAIMLERCHRYSLER AG, 70567 STUTTGART, DE |
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Owner name: LEOPOLD KOSTAL GMBH & CO. KG, 58507 LUEDENSCHEID, DE |
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Owner name: KOSTAL AUTOMOBIL ELEKTRIK GMBH & CO. KG, DE Free format text: FORMER OWNER: LEOPOLD KOSTAL GMBH & CO. KG, 58513 LUEDENSCHEID, DE |
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Representative=s name: HAVERKAMP, JENS, PROF. DIPL.-GEOL. DR.RER.NAT., DE |
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Representative=s name: HAVERKAMP PATENTANWAELTE PARTG MBB, DE |
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R071 | Expiry of right |