DE102016220620A1 - Method for releasing a remotely controllable vehicle function and vehicle locking system - Google Patents

Abstract

The invention relates to a method for releasing a remotely controllable vehicle function by measuring a distance between a remote control (7) with a remote control clock (8) and a vehicle (100) with a vehicle clock (2) by means of a transit time measurement of a signal with: Synchronizing the remote control clock (8 ) with the vehicle clock (2); Sending the signal comprising a time information to the vehicle (100) for triggering the remotely controllable vehicle function by means of the remote control (7); Determining the signal transit time and thus the distance between remote control (7) and vehicle (100) based on the transmitted time information; Comparing the signal propagation time and / or the distance with a maximum signal propagation time and / or a maximum distance; Release of the remotely controllable vehicle function if the signal transit time does not exceed the maximum signal transit time and / or the distance does not exceed the maximum distance. The invention further relates to a vehicle locking system (1) suitable for carrying out the method.

Description

The invention relates to a method for releasing a remotely controllable vehicle function by measuring a distance between a remote control with a remote control watch and a vehicle with a vehicle clock by means of a transit time measurement of a signal and a vehicle locking system, which is designed for performing such a method.

Modern vehicles can be unlocked usually with remote keys (remote control designed as a key). In this case, a user sends an unlocking signal by means of a remote control (usually arranged in the remote control key) to the vehicle to be unlocked or to a control arranged in the vehicle. Upon authorization of the transmitted (possibly encoded) signal, an unlocking mechanism is actuated by the controller.

In more advanced systems unlocking of the vehicle takes place even without active operation of the remote control by the user. In such key modules, an RFID transponder is usually provided, which receives a signal when approaching the vehicle and then emits a coded response signal and opens a lock on authentication in the vehicle or releases. Such systems are known by the terms "keyless access" or "KESSY", "keyless go", comfort key or convenience access.

There are different approaches to protect against unauthorized release of the unlocking function by unauthorized third parties:

DE 196 31 331 A1 discloses a vehicle safety system in which a transmitter for transmitting command signals is provided with a code scrolling generator which is operated upon initiation of control logic to provide a code which includes at least a portion of forms transmitting signal. The code is automatically exchangeable at intervals. The associated receiver is also provided with a code scroll generator which alternates the code substantially in synchronization with the timing of the code change in the transmitter.

Nevertheless, such systems may provide only limited protection against misuse. For example, with the help of two electronic amplifiers, it is possible to open such a vehicle locking system without authorization by receiving (monitoring) the radio signals from the remote control (key) through an amplifier and transmitting it to another amplifier, which then uses the "intercepted" signal can be used to operate the locking system from a distance with the "intercepted" signal.

To minimize this risk, there are also approaches to determine the distance between a remote control and the vehicle by a transit time measurement of the signals and to allow access only if the distance is within a predetermined range. Since the signals are usually transmitted as radio signals in the microwave range, however, tolerance problems in the transit time measurement occur here due to the extremely short signal propagation times.

From the WO 02/01247 A2 An approach is known in which a first and a second signal, in particular an interrogation signal of a base station and a response signal of a portable code transmitter (remote control), are emitted twice at different carrier frequencies. The carrier frequencies are correlated. Furthermore, they can be adjusted to each other by frequency shifting, so that a phase shift between the signals can be measured, from which then the distance of the code transmitter (remote control) to the base station (vehicle) can be determined. In this system, however, it is necessary to first exchange signals with different frequencies in order to determine the running time and thus the distance.

The object of the present invention is therefore to provide a method or a system which at least partially overcomes the above-mentioned disadvantages. This object is achieved by the method according to claim 1 and the system according to claim 6.

Further advantageous embodiments of the invention will become apparent from the subclaims and the following description of preferred embodiments of the present invention.

• - Synchronisieren der Fernsteuerungsuhr mit der Fahrzeuguhr,
• - Senden des eine Zeitinformation umfassenden Signals mittels der Fernsteuerung an das Fahrzeug zum Auslösen der fernsteuerbaren Fahrzeugfunktion,
• - Bestimmen der Signallaufzeit und damit der Entfernung zwischen Fernsteuerung und Fahrzeug anhand der ermittelten Zeitinformation,
• - Vergleichen der Signallaufzeit und/oder der Entfernung mit einer maximalen Signallaufzeit und/oder einer maximalen Entfernung,
• - Freigabe der fernsteuerbaren Fahrzeugfunktion, wenn die Signallaufzeit die maximale Signallaufzeit und/oder die Entfernung die maximale Entfernung nicht überschreitet.

An inventive method is characterized in that the release of a remotely controllable vehicle function by measuring a distance between a remote control with a remote control clock and a vehicle with a vehicle clock by means of a transit time measurement of a signal by performing the following steps:

• Synchronizing the remote control clock with the vehicle clock,
• Sending the signal comprising a time information by means of the remote control to the vehicle for triggering the remotely controllable vehicle function,
• Determining the signal transit time and thus the distance between the remote control and the vehicle based on the determined time information,
• Comparing the signal propagation time and / or the distance with a maximum signal propagation time and / or a maximum distance,
• - Release of the remotely controllable vehicle function if the signal transit time does not exceed the maximum signal propagation time and / or the distance does not exceed the maximum distance.

In this method, the problem of measuring tolerances in determining the (very short) signal propagation time - especially in radio signals - solved by providing a process step in which the remote control clock is synchronized with the vehicle clock, so that even with short signal delays a sufficiently accurate Runtime determination and thus a sufficiently accurate distance determination between remote control and vehicle is possible.

The term vehicle in this context includes the entire vehicle system with its modules and components that are required and suitable to detect and process the received signal and then perform the desired vehicle function (s).

In this case, the remote control clock is used to generate time information (in other words: a time stamp), which is sent together with the signal to the vehicle to trigger a remotely controllable vehicle function, in particular an unlocking function. By means of the vehicle clock, the reception time is determined at which the signal with the time information received in the vehicle. This time information (time stamp) contains the time at which the signal was sent from the remote control to the vehicle. The difference between the time of sending (time information, time stamp) and the time of reception corresponds to the running time of the signal.

At a known transmission speed (e.g., speed of light at radio waves), this results in the distance between the remote control and the vehicle by multiplying the difference between the time of transmission and the time of reception by the signal speed.

With a synchronization accuracy of ≤ 1 ns, the spatial speed in the range of about 0.3 m results at the speed of light of the radio waves. With a recordable running time of approx. 10 ns, distances within the range of 3 m to 5 m can be safely resolved. If, for example, the signal propagation time exceeds a maximum signal propagation time (for example of 10 ns), a maximum (permissible) distance (about 3 m) is thus also exceeded and the release of the remotely controllable vehicle function is omitted.

Even if the signal with the time information (time stamp) is now detected by a third unauthorized person and sent to the vehicle by another transmitter (at a greater distance) for triggering the remotely controllable vehicle function, the transit time to the vehicle is significantly extended and exceeds the permissible limit maximum signal transit time. The extended transit time is determined on the basis of the time information transmitted in the intercepted signal, and the comparison of this signal transit time shows that the maximum signal propagation time and thus also the maximum distance have been exceeded. The vehicle function is not released. Thus, the unauthorized use of a signal to trigger a remotely controllable vehicle function is prevented by a simple "clock comparison" (nothing else is the synchronization), even if this signal is audible and reusable.

There are versions in which the remotely controllable vehicle function includes an unlocking function. The unlocking of a vehicle lock or the deactivation of an immobilizer is the core function to ensure authorized access to the vehicle and its components.

In other embodiments, however, remotely controlled vehicle functions such as the preheating of certain components in an imminent cold start, switching on lighting elements, switching on heating elements or the like can be provided.

When synchronizing the remote control watch with the vehicle watch, the following may be provided: arranging the remote control watch at a defined synchronization location with the vehicle watch. This ensures that runtime effects can be compensated during synchronization, which is also carried out via the exchange of time signals. Namely, if the remote control clock is located at a synchronization location, from which the distance to the vehicle clock and thus the duration of the signal is known, this runtime can be taken into account during signal exchange and thus allows an exact synchronization of the two clocks.

If the synchronization process is controlled by the vehicle, it can be provided that the synchronization location or the presence of the remote control clock at the synchronization location is queried. A synchronization occurs only when the remote control clock is actually located at the synchronization location or in a particular synchronization area. Such a synchronization location can for example also be a docking station in which the remote control (key module) is arranged with the remote control clock, which is then connected to the vehicle clock via a line connection with a defined signal transit time, for example. In such an embodiment, an exact synchronization is then ensured over the known signal delay between remote control clock and vehicle clock.

It can also be provided that the synchronization process is initiated by the remote control clock. In this case, the remote control clock (or the remote control) then signals the presence at the predetermined synchronization location - that is, for example, in a specific docking station or in a specific synchronization area (for example, a defined storage location).

There are embodiments in which synchronization occurs in one of the following vehicle functions: turning on the ignition, turning off the ignition, closing a vehicle door, opening a vehicle door, mechanically locking a vehicle door.

These are typical vehicle functions that can be synchronized and that ensure that the time between synchronization and reuse of the remote control is comparatively short. In particular, such vehicle functions, which usually precede the abandonment or parking of the vehicle (switching off the ignition, closing a vehicle door, opening a vehicle door (before disembarking) and mechanically locking a vehicle door - possibly by a corresponding external switch on the vehicle, which is provided only for locking ), represent favorable times for a synchronization.

There are also embodiments in which by means of remote control and other electronic and / or mechanical key functions are executable. Typical electronic functions are, for example, the approach recognition of the remote control to the vehicle, which then causes the actual transmission of the signal. In such an embodiment, no active operation of the remote control by a user is required, but the signal transmission takes place upon detection of a certain distance of the remote control to the vehicle. Such a function can be realized for example via active or passive transponder systems. If the remote control is designed as a key module, mechanical key functions, for example in the form of a key profile, can also be realized.

• - Auslösen des Steuerungssignals in der Fernsteuerung durch Senden eines Aktivierungssignals von einer Fahrzeugsteuerung (s.o.). Damit wird die fernsteuerbare Fahrzeugfunktion vom Fahrzeug aus ausgelöst.
• - Weiter kann vorgesehen werden, dass die Fahrzeuguhr mit einer Systemuhr synchronisiert wird. Damit wird sichergestellt, dass bei der Synchronisierung der Fernsteuerungsuhr mit der Fahrzeuguhr nicht nur eine relativ genaue Synchronisierung zwischen den beiden Uhren, sondern auch eine absolute Synchronisierung mit einer Normalzeit sichergestellt ist. Damit kann die Genauigkeit des Verfahrens weiter erhöht werden.
• - Es ist auch möglich, dass die Fernsteuerungsuhr mit der Fahrzeuguhr in (regelmäßigen) Zeitintervallen wiederholt synchronisiert wird. Dies ist beispielsweise dann vorteilhaft, wenn ein vergleichsweise langer Zeitraum zwischen der letzten Synchronisierung zwischen Fahrzeuguhr und Fernsteuerungsuhr verstrichen ist.

There are embodiments in which further method steps can be provided:

• - Triggering the control signal in the remote control by sending an activation signal from a vehicle control (see above). This triggers the remotely controllable vehicle function from the vehicle.
• - It can also be provided that the vehicle clock is synchronized with a system clock. This ensures that when synchronizing the remote control clock with the vehicle clock not only a relatively accurate synchronization between the two clocks, but also an absolute synchronization with a normal time is ensured. Thus, the accuracy of the method can be further increased.
• It is also possible that the remote control clock is repeatedly synchronized with the vehicle clock at (regular) time intervals. This is advantageous, for example, when a comparatively long period has elapsed between the last synchronization between the vehicle clock and the remote control clock.

• - eine Fahrzeuguhr zum Erzeugen einer Zeitinformation,
• - eine erste Sende-/Empfangseinheit zum Senden und Empfangen von Steuerungs- und/oder Aktivierungssignalen,
• - eine Fernsteuerung mit einer Fernsteuerungsuhr zum Erzeugen einer Zeitinformationen, einer Steuerung zum Erzeugen eines Steuerungssignals und einer zweiten Sende-/Empfangseinheit zum Senden und Empfangen von Zeitinformations-, Steuerungs- und/oder Aktivierungssignalen und
• - eine Steuerung zum Auslösen einer Synchronisierung der Fernsteuerungsuhr mit der Fahrzeuguhr, zum Auslösen einer Synchronisierung der Fahrzeuguhr mit einer Systemuhr und/oder zum Auslösen einer Fahrzeugfunktion.

An inventive vehicle locking system for carrying out the method outlined above has the following:

• - a vehicle clock for generating time information,
• a first transmitting / receiving unit for transmitting and receiving control and / or activation signals,
• a remote control with a remote control clock for generating time information, a controller for generating a control signal and a second transceiver unit for transmitting and receiving time information, control and / or activation signals, and
• a controller for triggering a synchronization of the remote control clock with the vehicle clock, for triggering a synchronization of the vehicle clock with a system clock and / or for triggering a vehicle function.

A vehicle locking system with these features is suitable in a simple manner to carry out the method according to the invention.

There are versions in which the remote control is designed as a vehicle key module. Such a remote control then combines the usual key functions and the functions and components required to carry out the method according to the invention in a common component, namely the "vehicle key".

In order to ensure the required accuracy of the time information, it is advantageous if the remote control watch and / or the vehicle clock are designed as electronic clocks or have those having a gear deviation of less than 1 ns per day to allow Mehrtätige synchronization intervals, or preferred have a gear deviation of less than 1 ns per week to allow synonymous, if necessary, several weeks of synchronization intervals (for example, longer shutdown periods of a vehicle, without thereby the remotely controllable release of a vehicle function, in particular the Entriegelns is limited).

Suitable electronic clocks or clock components with the required accuracy and synchronization functions are formed, for example, as electronic components or parts that form components of circuits that as a remote control clock in the remote control (eg in a vehicle key module) or as a vehicle clock in the controller or in the vehicle serve.

A vehicle with a vehicle locking system according to the invention is to operate according to the latest comfort standards, without incurring safety deficiencies (unauthorized access to the vehicle) would have to be accepted.

• 1 schematisch ein Ausführungsbeispiel eines erfindungsgemäßen Fahrzeugverriegelungssystems,
• 2 ein schematisches Diagramm eines Ausführungsbeispiels eines erfindungsgemäßen Verfahrens und
• 3 eine schematische Darstellung zur Laufzeiterfassung und zur Synchronisierung.

Embodiments of the invention will now be described by way of example and with reference to the accompanying drawings. It shows:

• 1 schematically an embodiment of a vehicle locking system according to the invention,
• 2 a schematic diagram of an embodiment of a method according to the invention and
• 3 a schematic representation of the term acquisition and synchronization.

An embodiment of a vehicle locking system according to the invention 1 is schematic and exemplary in 1 shown. The vehicle locking system 1 includes a vehicle clock arranged in a vehicle 100 2 , for example, part of a vehicle control or an access control control 3 is.

Furthermore, a first transmitting / receiving unit 4 provided, which serves to send control and / or activation signals from the vehicle 100. These control signals include, for example, synchronization signals and / or time information. The time information is thereby from the vehicle clock 2 made available. The time information may be, for example, a time stamp that corresponds, for example, to a synchronization time, a transmission time or a reception time. To process and control the signals and components is the controller 3 with a calculator 5 which also controls the first transceiver unit 4 takes over.

Both the vehicle clock 2 as well as the first transceiver unit 4 can also be outside the controller 3 be provided at a suitable location in the vehicle 100.

Further, the vehicle 100 includes a functional component that serves as a vehicle locking system 6 is designed that over the controller 3 is operable. Further, the vehicle locking system includes 1 a remote control that acts as a vehicle key module 7 is trained. The vehicle key module 7 has a remote control clock 8th on, a control unit 9 and a second transceiver unit 10 for sending and receiving time information, control and / or activation signals to the first transceiver unit 4 in the vehicle 100.

Optionally, the as a vehicle key module 7 trained remote control switch 11 have over which, for example, upon actuation locking or unlocking signals are emitted. In addition, the vehicle key module 7 also a mechanical key element 12 include and formed as terminals contact zones 13 for connection to an optional docking station 14 in the vehicle 100, which is also there with the controller 3 is coupled.

Further, the vehicle locking system includes 1 optionally an external system clock 15 with which the vehicle clock 2 can be synchronized via a corresponding synchronization signal. The vehicle clock 2 and the remote control clock 8th preferably include watches or watch components that are formed as electronic assemblies or parts, and that form part of circuits that in the remote control watch 8th or in the vehicle clock 2 be used or serve as such. They provide the time information and process it, resolve time intervals ≤ 1 ns, and have a rate deviation of less than 1 ns per day, and preferably less than 1 ns per week.

2 shows a schematic diagram of an embodiment of a method according to the invention comprising a plurality of (sometimes optional) steps to release a remotely controllable vehicle function, in particular for releasing a release function of the vehicle 100.

For this procedure, first the synchronization of the remote control clock 8th with the vehicle clock 2 executed (step 1 ). This is a time information of the vehicle clock 2 to the remote control clock 8th then sent via the control unit 9 adjusted so that they are with the vehicle clock 2 is synchronized. Optionally, this may include arranging the remote control clock 8th at a defined synchronization location (step 1a). The synchronization can be done, for example, when the remote control 7 over the contact zones 13 with the docking station 14 is connected in the vehicle 100.

Optionally, the presence of the remote control clock 8th at the synchronization location (eg in the docking station 14 ) via the controller 3 be queried (step 1b). The synchronization will only be executed if the remote control clock 8th or the remote control 7 with the docking station 14 is connected or in an area suitable for synchronization in the vehicle 100 is located (for example, a defined filing).

Alternatively, the step may be performed that the presence of the remote control clock 8th is signaled at the synchronization location (step 1c), either by a corresponding signal of the remote control 7 or by a presence signal of the docking station 14 or a defined recording area (specific filing), where the presence of the remote control clock 8th or the remote control 7 is detected (eg by means of the query in step 1b).

Are vehicle clock 2 and remote control clock 8th synchronized with each other, so is to trigger the remotely controlled vehicle function (here: unlocking the vehicle locking system 6 ) by means of the remote control (vehicle key module 7 ), a signal comprising a time information t ₀ , to the vehicle 100 and to the controller 3 sent (step 2 ).

To determine the signal propagation time of the transmitted signal (step 3 ) between the remote control (vehicle key module 7 ) and the vehicle 100 or the controller 3 becomes the signal delay .delta.t determined by the time information t ₀ , which corresponds to the transmission time, with a second time information t ₁ is compared, which corresponds to the reception time. By the difference between t ₀ and t ₁ , the signal propagation time .delta.t certainly. This signal transit time corresponds to a distance S the remote control (vehicle key module 7 ) from the vehicle 100 or from the controller 3 , It is calculated according to the formula: $$\text{S}={\text{v}}_{\text{L}}\times \mathrm{\Delta }\text{t}\text{,}$$

Where S is the distance and V _{L is} the speed of light at which the signal containing the time information was sent to the vehicle (step 3 ).

By comparing the signal delay .delta.t with a maximum signal delay Δtmax or the specific distance S with a maximum distance Smax it is determined whether the maximum signal propagation time has been exceeded or the maximum transmission distance has been exceeded (step 4 ).

Subsequently, the release of the remotely controllable vehicle function takes place (unlocking the locking system 6 ) on the condition that the signal propagation time .delta.t the maximum signal transit time Δtmax and / or the specific distance S the maximum distance Smax does not exceed (step 5 ).

The signal in the remote control 7 can also be in an optional step 6 by sending an activation signal from the vehicle control 3 to be triggered.

The synchronization of the remote control clock 8th with the vehicle clock 2 may also be repeated at regular or adjustable time intervals (step 1d).

In addition to the control of the locking system described here 6 Other vehicle components can also be controlled in this way (for example an electronic steering wheel lock, an electronic ignition lock, an immobilizer or an alarm system, an engine control unit or a controller for comfort functions such as heating, lighting, etc.).

The securing of the vehicle locking system 1 In accordance with the method according to the invention, this takes place in that at a signal input at a time t ₂ , after deduction of the transmitted time information t ₀ (sending time), a signal delay time .delta.t which gives a maximum signal propagation time Δtmax exceeds, the system remains blocked and the release of the remotely controlled vehicle function is omitted.

The different runtimes and synchronization processes are the 3 removable. The lower number beam shows a time course of the system clock 15 , Above this is the time course of the vehicle clock 2 and over it two different signal propagation times of the signal transmitted by the remote control with the time information t0 , The synchronization is also indicated graphically.

When synchronizing between the system clock 15 and the vehicle clock 2 will the deviation Z2 the vehicle clock 2 from the system clock 15 set to zero so that the two clocks are synchronized from the synchronization time (step 7 in 2 ). Similarly, the synchronization is between the remote control clock 8th and the vehicle clock 2 by adding a time deviation Z8 between the vehicle clock 2 and the remote control clock 8th is synchronized so that the clocks run synchronously.

If, in one case, the signal with the time information t _{0 is} sent out, then it will be in the vehicle or in the controller 3 at a time t ₁ receive. As both watches, vehicle clock 2 and remote control clock 8th , run synchronously, it can be a signal delay .delta.t to calculate. In this case, the term is .delta.t less than a predeterminable maximum duration Δtmax and thus permissible. The release of the remotely controllable vehicle function takes place.

In another case, the signal transmitted by the remote control with the time information t _{0 is} only at a time t ₂ in the vehicle 100 or in the controller 3 receive. This time is there by the vehicle clock 2 determined. This results in a (inadmissible) signal transit time Δt ₂ , which the permissible signal propagation time Δtmax exceeds - the release of the remotely controlled vehicle function does not take place in this case. This can be prevented that an intercepted signal with the time information t ₀ , which was redirected over several stations, is used to release the remotely controlled vehicle function.

Further embodiments and variations of the invention will become apparent to those skilled in the scope of the claims.

LIST OF REFERENCE NUMBERS

1

Vehicle Restraint System

2

vehicle clock

3

Control (vehicle control, access control control)

4

first transmitting / receiving unit

5

computer

6

Functional component (locking system)

7

Remote control (vehicle key module)

8th

Remote control Suhr

9

control unit

10

second transmitting / receiving unit

11

switch

12

mechanical key element

13

Contact zones (connections)

14

Docking station

15

system clock

t0

time information

t ₁

Reception time 1 (in time)

t ₂

Reception time 2 (too late)

.delta.t

Runtime (allowed)

Δt ₂

inadmissible (too long)

Δtmax

maximum signal transit time

Z2

Time difference between vehicle clock and system clock

Z8

Time difference between remote control clock and vehicle clock

S

Distance remote control - vehicle

Smax

Max. permissible distance remote control - vehicle

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19631331 A1 [0005]
• WO 0201247 A2 [0008]

Claims (10)

A method for releasing a remotely controllable vehicle function by measuring a distance between a remote control (7) with a remote control watch (8) and a vehicle (100) with a vehicle watch (2) by means of a transit time measurement of a signal with: - Synchronizing the remote control clock (8) with the vehicle clock (2) - Sending the signal comprising a time information by means of the remote control (7) to the vehicle (100) for triggering the remotely controllable vehicle function - Determining the signal transit time and thus the distance between remote control (7) and vehicle (100) based on the transmitted time information Comparing the signal propagation time and / or the distance with a maximum signal propagation time and / or a maximum distance - Release of the remotely controllable vehicle function if the signal transit time does not exceed the maximum signal propagation time and / or the distance does not exceed the maximum distance. Method according to Claim 1 , wherein the remotely controllable vehicle function comprises an unlocking function (1). Method according to Claim 1 or 2 wherein synchronizing the remote control clock (8) with the vehicle clock (2) comprises one of the steps of: - placing the remote control clock (8) at a defined synchronization location with the vehicle clock (2), - interrogating the presence of the remote control clock (8) at the synchronization location , - signaling the presence of the remote control clock (8) at the synchronization location. Method according to Claim 1 . 2 or 3 wherein the synchronization is at one of the following vehicle functions: turning on the ignition, turning off the ignition, closing a vehicle door, opening a vehicle door; mechanical locking of a vehicle door. Method according to one of Claims 1 to 4 , wherein by means of the remote control (7) electronic and / or mechanical key functions (12) are executable. Method according to one of Claims 1 to 5 in at least one of the following steps: - triggering the control signal in the remote control (7) by sending an activation signal from a vehicle control (3) - synchronizing the vehicle clock (2) with a system clock (15) - repeating synchronization of the remote control clock (8) with the vehicle clock (2) in time intervals A vehicle locking system suitable for carrying out the method according to any one of Claims 1 to 6 is formed and comprising: - a vehicle clock (2) for generating a time information, - a first transmitting / receiving unit (4) for transmitting and receiving control, and or activation signals - a remote control (7) with a remote control clock (8) for Generating time information, - a controller (9) for generating a control signal and a second transceiver unit (10) for transmitting and receiving time information, control and / or activation signals - a controller (3) for triggering a synchronization of the remote control clock (8) with the vehicle clock (2), for triggering a synchronization of the vehicle clock (2) with a system clock (15) and / or to trigger a vehicle function. Vehicle locking system according to Claim 7 , wherein the remote control (7) is designed as a vehicle key module (7). Vehicle locking system according to one of the preceding claims, wherein the remote control clock (8) and / or the vehicle clock (2) is designed as an electronic component. Vehicle (100) with a vehicle locking system according to one of Claims 7 to 9 ,

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