DE102009007177A1 - Communication system for use in e.g. motor vehicle, for communication with e.g. infrastructure unit, has CPU rejecting establishment of communication voice link, when message sent by adjacent vehicle does not satisfies required criteria - Google Patents

Abstract

The system (100) has a CPU (101) for controlling communication, and a communication unit (102) for transmitting data to an adjacent vehicle and for receiving data from the adjacent vehicle. The CPU and the communication unit transmit a request to the adjacent vehicle for determining whether a communication voice link between a vehicle and the adjacent vehicle is established or not. The CPU rejects the establishment of the communication voice link, when a message sent by the adjacent vehicle does not satisfies required criteria. Independent claims are also included for the following: (1) a method for communication of a vehicle with an adjacent vehicle (2) a program element instructs a processor to perform steps of a method for communication of a vehicle with an adjacent vehicle (3) a computer readable medium instructs a processor to perform steps of a method for communication of a vehicle with an adjacent vehicle.

Description

Field of the invention

The The invention relates to communication between vehicles. Especially The invention relates to a communication system for a Vehicle for communication with neighboring vehicles, a vehicle with a communication system, a method of communication a vehicle with an adjacent vehicle, a program element and a computer readable medium.

Technological background

The Field of application of the invention relates to a so-called. Vehicle-to-vehicle communication, which is also known as "car-to-car communication", and gets along completely without fixed communication node. Such communication networks come today, for example, in commercial vehicles used, which are in column formation to goods from a point of origin to a common destination. The communication accompanying this transport task allows one easy coordination of each vehicle during the Journey. So can between the vehicles during the traffic congestion, planned driving interruptions and the like are communicated.

From the JP 2005174237 A goes out a known system for communication between vehicles of such a communication network, which is based on the broadcast principle. Here, the driver of a vehicle can send by radio information that can be received by the other vehicles. For this purpose, a radio communication frequency must first be defined between the vehicles on which the speech communication is to take place. Any vehicle that knows this radio communication frequency can participate in the communication between the vehicles. This can lead to the fact that also vehicles participate in the communication, which do not belong to the vehicle group.

Summary of the invention

It It is an object of the invention to provide improved communication between To provide vehicles.

It are a communication system for a vehicle for communication with neighboring vehicles, a vehicle with a communication system, a method of communication between vehicles, a program element and a computer readable medium according to the features of independent claims specified. further developments The invention will become apparent from the dependent claims.

At It is important for that post to consider the following in relation to features described in the communication system also in the method can be implemented as process steps, and vice versa. This also applies to the program element and the computer readable medium.

According to one Embodiment of the invention is a communication system for a vehicle for communication with neighboring vehicles specified, which is a control unit for controlling the communication and a communication unit for communicating data to the neighboring vehicles and to receive data from the Having adjacent vehicles. The control unit and the communication unit are here to send a request to a neighboring Vehicle, whether a build up of a communication voice link between the vehicle and the adjacent vehicle should be executed. Furthermore, the control unit is designed to reject the structure of the communication voice connection, if a message sent from the neighboring vehicle is on required criterion not met.

In In other words, the communication system can be used in communication systems inquire of neighboring vehicles whether a communication voice connection should be built. The communication unit of the neighboring Vehicle receives this request and can then the Offer communication unit of the original vehicle, establish a voice connection. This offer may be from the communication system of the original vehicle should be rejected if the Data sent with the offer is a required criterion do not fulfill.

On This way can be prevented from neighboring vehicles participate in communication that is not desired.

At It should be borne in mind that the various Vehicles do not have to be part of a vehicle convoy. The vehicles may be, for example, motor vehicles or motorcycles.

According to one Another embodiment of the invention is the criterion then met if the adjacent vehicle in a corresponding List of the communication system of the original vehicle is registered.

This list may, according to another Embodiment of the invention to be maintained by the driver of the vehicle. For this purpose, the communication system is equipped with an input and output unit, which is designed to process the list by the driver of the vehicle. The driver can thus put together a certain group of vehicles in a list, which can then communicate with each other via a communication voice connection. All other vehicles are rejected.

According to one Another embodiment of the invention, the communication system furthermore a vehicle sensor system. The request to the neighboring Vehicles will only be transmitted if the vehicle sensors detected a specific triggering event.

According to one Another embodiment of the invention is in this triggering event about the driving inactivity of the vehicle to an accident of the vehicle, to the discontinuation of a Ecalls by a communication unit of the vehicle (for example the same communication unit that also sends out the request) to one so-called. Ghost driver, so driving on a roadway for the oncoming traffic, or a triggering by the driver.

detected the vehicle sensors such an event, then the request sent to the other vehicles. These can then, if the drivers of the other vehicles so wish, or fully automatically, depending on the setting, send back an offer to set up a communication voice connection. This offer can then be accepted or rejected, for example depending on whether the adjacent vehicle in one corresponding list is entered or not.

According to one Another embodiment of the invention is the control unit for automatically accepting or automatically rejecting the structure the communication voice connection is executed, depending on whether the criterion is fulfilled or not.

One Intervention by the driver is not required. Is the criterion fulfilled? the communication voice connection to the adjacent vehicle comes automatically conditions.

According to one Another embodiment of the invention has the request an identification of the sending vehicle. So it will be at the request vehicle-specific data sent, so that the neighboring vehicles can identify the sending vehicle. In this way, the communication systems in the neighboring vehicles decide whether to establish a communication voice connection should be offered or not.

According to one contains another embodiment of the invention the request information about the triggering Event. That way the communication systems can the neighboring vehicles decide (automatically or through user intervention), whether the establishment of a communication language connection are offered should or not.

According to one Another embodiment of the invention is the communication system to receive a request from a corresponding communication system of the adjacent vehicle. It continues for user selection of a triggering type Event for which the request should be displayed.

On This way you can avoid all requests to establish a communication voice connection. Rather, only requests that are selected with Related events.

According to one Another embodiment of the invention is the communication system for automatically offering a communication voice connection executed when receiving the request, if a preset Condition is met.

On In this way it is possible to establish the communication language connection to automate.

According to one another embodiment of the invention is used instead the request directly the offer to establish a voice connection shipped from the first vehicle and the second vehicle can this accept directly and thereby directly establish the voice connection. There are also other forms of construction of the speech connection conceivable, the However, always follow the basic scheme that the first vehicle the Desire to communicate sent and the second vehicle decides whether it fulfills this desire or not.

According to one Another embodiment of the invention is a vehicle with a communication system described above and below.

According to a further embodiment of the invention, a method for communicating a first vehicle with an adjacent second vehicle is specified, in which a request to the adjacent second vehicle, whether a structure ei ner communication voice connection between the first vehicle and the adjacent second vehicle is to be transmitted. Furthermore, a denial of the structure of the communication voice connection occurs when a message sent from the adjacent second vehicle does not satisfy a required criterion.

According to one Another embodiment of the invention takes place after the transmission of the request to the second vehicle a Message from the second vehicle to the first vehicle in which the Establishment of a communication language connection is offered.

According to one Another embodiment of the invention is a program element indicated that if it is on a processor of one described above Communication system is running, the communication system instructs to perform the method steps described above.

According to one Another embodiment of the invention is a computer-readable Specified medium containing a program element that, if it is on a processor of a communication system described above is running the processor that described above Perform process steps.

there For example, the program element may be part of a software, which is stored on a processor of the vehicle management. The processor can also be the subject of the invention. Farther this embodiment of the invention comprises a program element, which already uses the invention from the beginning, as well as a program element that is updated by an update an existing program for using the invention causes.

According to one Another embodiment of the invention is for initiation a communication between the adjacent vehicles in a first Step, for example on a general radio channel, via radio link exchanged identification information for forming a communication network, which in a second step in the communication system of each participant Vehicle is entered, after final acknowledgment through at least one other already to the communication network enter the same vehicle.

On This is a departure from the one described above Broadcast approach, in which all vehicles with all in Range communication devices are connected. Rather, a closed group formation between the individual Communication systems (and thus between the individual vehicles) possible, in which a completely completed Radio communication can take place from vehicle to vehicle. interference be omitted by non-group communication systems and it is therefore a safe and purposeful exchange of information within the vehicle group possible. Admission to this Circle of closed communication is for example through reached the initiation procedure described above, which communication technology a so-called handshake between the communication systems to be connected represents. Condition for this is that the vehicles the other vehicles of the group after the occurrence of a triggering Event can contact by radio to subsequently accept an offer from another vehicle to establish a communication voice connection or to be able to refuse. This process can be an identifier exchange include (so-called handshake). After this handshake, every communication system detects whether information comes from a group vehicle or from a strange vehicle.

in the Below, with reference to the figures, embodiments of the invention.

Brief description of the figures

1 shows a communication system according to an embodiment of the invention.

2 shows two vehicles according to an embodiment of the invention.

three shows a flowchart of a method according to an embodiment of the invention.

Detailed description of exemplary embodiments

The Representations in the figures are schematic and not to scale. In the following figure description will be for the same or similar elements use the same reference numerals.

1 shows a communication system 100 according to an embodiment of the invention. The communication system 100 has a central control unit (CPU) 101 on that with a communication unit 102 , a vehicle sensor 103 and an input and output unit 104 connected is.

The vehicle sensors 103 has, for example, a camera 105 , an ESP sensor 106 as well as a satellite navigation unit (GPS unit) 107 on.

Naturally Still other sensors can be provided to trigger the To detect events.

Farther It should be noted that in the context of the present invention GPS representative of all Global Navigation Satellite Systems (GNSS), such as GPS, Galileo, GLONASS (Russia), Compass (China), IRNSS (India), ...

• – Ein Fahrzeug bleibt liegen und ist nicht mehr fahrtüchtig;
• – ein Fahrzeug hat einen Unfall;
• – ein Fahrzeug hat einen Ecall abgesetzt;
• – ein Fahrzeug fährt gegen die Fahrtrichtung (Geisterfahrer);
• – ein Fahrzeug hat sich verirrt oder braucht Orientierungshilfe (Ereignis durch Fahrzeuginsassen getriggert);
• – ein Fahrzeug braucht medizinische Hilfe für Fahrzeuginsassen (Ereignis durch den Fahrzeuginsassen getriggert).

When a particular event occurs, other vehicles are given the option to establish a voice connection to trigger the event. If now the establishment of a voice connection by a driver of another vehicle (or automatically by the other vehicle, without the driver has to intervene) requested, the trigger gets this request displayed including an identification of the vehicle that wants to record the voice connection and can accept or reject. Events for the voice connection can be:

• - A vehicle remains lying and is no longer roadworthy;
• - a vehicle has an accident;
• - a vehicle has dropped off an ecall;
• - A vehicle drives against the direction of travel (Ghost driver);
• - a vehicle has lost its way or needs guidance (event triggered by vehicle occupants);
• - A vehicle needs medical assistance for vehicle occupants (event triggered by the vehicle occupant).

2 shows a first vehicle 201 and a second vehicle 202 , each one a communication system 100 exhibit. Between the two communication systems 100 there is a radio connection 203 ,

The vehicle 201 triggers the event and the vehicle 202 the option for voice connection is given.

Each driver can specify whether other vehicles should be given the opportunity to request a voice connection when a specific, definable event occurs. Even if such a voice connection from another vehicle 202 offered, the driver (or the communication system 100 ) of the triggering vehicle 201 still accept the voice connection. The activation of the voice connection option can generally take place for all events or only for selected events. For example, a driver of a first vehicle may specify that only if other vehicles are offered the option to establish a voice connection when the first vehicle is left lying.

In Advantageously, the option to establish the communication voice connection therefore sent as a message with the event, z. B. as a "language establishment flag".

• – Das zweite Fahrzeug 202 bekommt die Option zur Sprachverbindung. Daraufhin bietet der Fahrer des zweiten Fahrzeugs 202 den Aufbau der Sprachverbindung an, woraufhin das erste Fahrzeug 201 diesen Aufbau ablehnen kann.
• – Das erste Fahrzeug 201 hat für einen Ereignistyp auf „automatisch annehmen" gestellt. Das zweite Fahrzeug 202 bietet für solch ein Ereignis eine Sprachverbindung an, diese wird dann direkt angenommen.
• – Das zweite Fahrzeug 202 ist in einer Liste „erwünschter Helfer" (z. B. Freunde, Kollegen, ...) aufgenommen. Diese Liste kann durch den Fahrer des ersten Fahrzeugs 201 beeinflusst (also editiert) werden. Das zweite Fahrzeug 202 bietet eine Sprachverbindung nach dem Ereignis im ersten Fahrzeug 201 an und die Sprachverbindung wird daraufhin automatisch aufgebaut.

There are several ways in which the language structure can be regulated:

• - The second vehicle 202 gets the option for voice connection. Thereupon the driver of the second vehicle offers 202 the structure of the voice connection, whereupon the first vehicle 201 reject this structure.
• - The first vehicle 201 has set to "automatically accept" for one event type. The second vehicle 202 offers a voice connection for such an event, which is then accepted directly.
• - The second vehicle 202 is included in a list of "wanted helpers" (eg, friends, colleagues, ...) This list may be written by the driver of the first vehicle 201 influenced (ie edited). The second vehicle 202 provides a voice connection after the event in the first vehicle 201 and the voice connection is then established automatically.

Preferably, when the voice connection option is displayed in the second vehicle 202 the reason for this is displayed (for example, "broken down vehicle") and the location where the vehicle has remained 107 intended. In the first vehicle 201 is displayed who wants to offer the voice connection.

This can be the second vehicle 202 unlock that in addition to the position further information about the second vehicle are released, which can then be displayed in the first vehicle. This may be, for example, vehicle type, vehicle color, driver's name, license plate, etc.

• – Ereignistyp;
• – Abstand zum Ereignis;
• – Aussender des Ereignisses.

The neighboring vehicles 202 You can set the events for which you want to have the voice connection option displayed. Restrictions can be:

• - event type;
• - distance to the event;
• - Sending the event.

For example the option to set up a voice connection is only displayed if it is "desired" interlocutor is.

In addition, it can be specified whether for certain events or senders of Event (eg friends, colleagues, ...) a voice connection is automatically offered. Takes the first vehicle 201 This communication voice connection also automatically (for this event type and / or this vehicle 202 ), a voice connection is automatically established during an event.

When Speech connection technologies are direct communication links, such as WLAN (802.11a / b / g / n, but also Automotive WLAN 802.11p), UWB, Bluetooth, WiMax, etc. provided. Also, GSM, UMTS, LTE, etc. are used. The voice connection then takes place for example in the form of Voice over IP (VOIP).

By the option to establish a voice connection after an event It is easy and uncomplicated to get help or to offer help.

three shows a flowchart of a method according to an embodiment of the invention. In step 301 An event is detected by the vehicle sensor system of the first vehicle. By detecting this event will be in step 302 triggered the transmission of a request to an adjacent vehicle. In other words, the neighboring vehicle is given the option of establishing a communication voice connection. In step 303 then the second vehicle offers the establishment of the communication voice connection to the first vehicle. In step 304 the first vehicle is given the opportunity to reject the establishment of the communication voice connection.

In addition or as an alternative to the possibility of rejecting the structure of the communication speech connection, the final structure of the communication speech connection can be effected by the initiation procedure described above, which in this case step 304 replace or join or precede this step.

These Process steps could be carried out fully automatically (except for entering the identification information, if necessary), if the appropriate criteria for this in the communication system are deposited. Optionally, for example, the accept or Rejecting the construction of the communication voice connection or the Offering the construction of the communication language connection through the second vehicle to be triggered by a user.

Also, the communication system according to the invention can be used to establish a voice connection after an event to infrastructure units. This is below with reference to 2 described:
Remains a vehicle 201 (F1) due to z. B. damage, so it is responsible for the responsible for the road traffic center 205 It is important to know what has happened in order to take action if necessary or to estimate the duration of the disability. Therefore, it makes sense to have a voice connection between F1 and the traffic management center 205 build. For this purpose (if available) Road-Side-Units (RSU) 204 used, which are the stationary equivalent of the communication unit in the vehicle.

• – Liegengebliebenes Fahrzeug und Pannenhilfe durch ein Hilfsfahrzeug. Hierbei kann auch ein Umschalten der Sprachverbindung von der Leitstelle zum Hilfsfahrzeug angewandt werden. Als RSU können hierbei z. B. auf Autobahnen die (in Deutschland orangen) Rettungstelefone am Straßenrand dienen.
• – Rettungsleitstellen (PSAP) nach einem Unfall, der nicht zur Auslösung eines Notrufs geführt hat.
• – Die Verkehrszentrale kann gezielt Sprachverbindungen zu Fahrzeugen eines Staus aufnehmen, um die genaue Ursache herauszufinden. Hierzu muss der Fahrer des Fahrzeugs diese Möglichkeit freigeschaltet haben. Empfängt ein so freigegebenes Fahrzeug eine Staumeldung und erkennt, dass es sich in diesem Stau befindet, so sendet es eine Kennung aus, über die die Verkehrszentrale Verbindung mit dem Fahrer aufnehmen kann (Idee der Staumelder).

Similar cases are:

• - Left-over vehicle and roadside assistance by an auxiliary vehicle. Here, a switching of the voice connection from the control center to the auxiliary vehicle can be applied. As RSU here z. B. on highways serving (in Germany oranges) rescue telephones on the roadside.
• - Rescue Coordination Centers (PSAP) after an accident that did not trigger an emergency call.
• - The traffic center can specifically record voice connections to vehicles of a traffic jam to find out the exact cause. For this purpose, the driver of the vehicle must have this option enabled. If a vehicle released in this way receives a traffic jam message and recognizes that it is in the traffic jam, it sends out an identifier that allows the traffic control center to contact the driver (idea of the traffic jam detector).

For the preparation of the speech compound, the inventive and methodology described above. It is no additional hardware necessary.

Description of embodiments this embodiment:

1st example:

One Vehicle remains on the highway due to a defect. Therefore, it sends via vehicle-to-infrastructure communication or Vehicle-to-vehicle communication (C2X) issues a warning. These Warning is received by an RSU of the traffic control center and there displayed. Then the traffic center builds a voice connection to the vehicle, which is also accepted by the vehicle, and the Traffic center can get more detailed information about the situation and help the driver of the vehicle.

2nd example:

Two vehicles have a rear-end collision (F1 moves to F2). The ecall of the vehicles will not triggered and both drivers are too excited to activate it manually. However, they both activate the hazard warning lights. This is also transmitted via C2X. An RSU receives this information and forwards it to a rescue center. There it is recognized that it is not a traffic jam, as all other vehicles continue. Then the rescue center establishes a communication link to the vehicles. If this is accepted by the vehicles, the rescue center can provide assistance.

3rd example:

One Traffic jam is detected by an RSU, since the vehicle only with drive very low speed or come to a complete stop. Then a traffic jam message will be sent. A vehicle that as Is registered, receives this traffic jam message and recognizes that it is in the traffic jam. Then send it has its identifier and the traffic center can have a voice connection to the vehicle. About this voice connection can z. B. be brought to know what the reason for the Traffic jam is.

Also, the communication system according to the invention for establishing a voice connection for emergency vehicles by C2X Communication can be used. This is described below:
Emergency vehicles often have to make their way through traffic. Often the drivers do not know where to drive their vehicles.

Here employs this embodiment of the invention. Moves a vehicle with deployment signal (blue light), it sends this information also via C2X communication. In addition, the identifier is still a voice channel sent over which the inmates speak of the emergency vehicle with other vehicles via broadcast can. If a vehicle receives the warning the emergency vehicle, so it also builds a voice connection to this over the specified channel. As a technique for this does not have to use the C2X technique, but it can work dodged another more suitable technology for this (for example, because of the higher available Bandwidth). For example, the voice communication is over Voice over IP handled.

There the vehicles themselves build the voice connection and not the Emergency vehicle, it is also left to each vehicle, whether it makes use of this possibility or not. Optionally, it may be controlled by the occupants of the vehicle, whether a voice connection should be established by this the Option is given (eg by a symbol on a touch screen).

additionally Can an emergency vehicle still force the vehicles in one defined perimeter or area of his voice messages to the inmates spend the vehicles. As a result, z. B. alerts be spread more easily.

The Voice messages from the emergency vehicle must be there not be spoken by the occupants of the emergency vehicle. It can also Bandansagen ("Please keep to the left") be used or the emergency vehicle as a relay station for the voice radio of a control center are used.

Also no additional hardware is necessary here.

Description of embodiments this embodiment:

1st example:

An ambulance 202 is approaching an accident site. On the multi-lane road there is high traffic. The ambulance activates its blue light and at the same time sends out the warning via DSRC. This warning also contains the identification of the voice channel, which is handled via normal WLAN via Voice over IP. Other vehicles receive the warning, display it to the driver and at the same time open the voice channel. The passenger of the ambulance can now direct all vehicles to the left side of the street, so that the ambulance can pass by on the right.

2nd example:

The rescue center 205 wants to contact vehicles in a region to warn of a fire with heavy smoke. In the region are no infrastructure units 204 available. Therefore, emergency vehicles will be sent to the region. These force via DSRC via C2X that other vehicles output the voice channel of the emergency vehicle to the driver. This voice channel is mapped via WiMax. Via this channel, the emergency vehicles now send the language directly from the operations center, with the connection between the operations center and the emergency vehicle being implemented by the authorities.

In addition, it should be noted that "comprising" and "having" does not exclude other elements or steps, and "a" or "an" does not exclude a plurality. It should also be noted that features or steps identified by reference have been described on one of the above embodiments, can also be used in combination with other features or steps of other embodiments described above. Reference signs in the claims are not to be considered as limitations.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• JP 2005174237 A [0003]

Claims (15)

Communication system for a vehicle ( 201 ) for communication with neighboring vehicles or an infrastructure facility, the communication system ( 100 ) comprising: a control unit ( 101 ) for controlling the communication; a communication unit ( 102 ) for communicating data to the neighboring vehicles and for receiving data from the neighboring vehicles; the control unit ( 101 ) and the communication unit ( 102 ) for submitting a request to an adjacent vehicle ( 202 ), whether a structure of a communication speech connection between the vehicle and the adjacent vehicle ( 202 ), are executed; the control unit ( 101 ) is further adapted to reject the structure of the communication voice connection when one of the neighboring vehicle ( 202 ) sent message does not meet a required criterion. The communication system of claim 1, wherein the criterion is met when the adjacent vehicle ( 202 ) in a corresponding list of the communication system ( 100 ) is registered. Communication system according to claim 2, wherein the communication system ( 100 ) an input and output unit ( 104 ) for processing the list by a driver of the vehicle ( 201 ) having. Communication system according to one of the preceding claims, further comprising: a vehicle sensor system ( 103 ); wherein the request is transmitted only when the vehicle sensor has detected a triggering event. The communication system of claim 4, wherein the triggering event is selected from the group consisting of non-driving character of the vehicle ( 201 ), Accident of the vehicle, dropping a Ecalls by a communication unit of the vehicle, driving on a lane for oncoming traffic, triggers by the driver. Communication system according to one of the preceding claims, wherein the control unit ( 101 ) is executed for automatically accepting or automatically rejecting the structure of the communication voice connection, depending on whether the criterion is met or not. Communication system according to one of the preceding claims, wherein the request is an identification of the vehicle ( 201 ) having. Communication system according to one of the preceding Claims, wherein the request contains information about has the triggering event. Communication system according to one of the preceding claims, designed to receive a request from a corresponding communication system of the neighboring vehicle ( 202 ); and executed to user-select a type of triggering event for which the request is to be displayed. Communication system according to claim 9, executed for automatically offering a communication voice connection upon receipt of the request, if a default condition is satisfied. Vehicle with a communication system ( 100 ) according to one of claims 1 to 10. Method for communicating a first vehicle ( 201 ) with an adjacent second vehicle ( 202 ), the method comprising the steps of: transmitting a request to the adjacent second vehicle ( 202 ), whether a structure of a communication voice connection between the first vehicle ( 201 ) and the adjacent second vehicle ( 202 ) should take place; Rejecting the structure of the communication voice link when one of the adjacent second vehicle ( 202 ) sent message does not meet a required criterion. The method of claim 12, further comprising the steps of: offering a communication voice connection by the second vehicle ( 202 ) after receiving the request. Program element that, when executed on a processor, instructs the processor to perform the following steps: transmitting a request to the adjacent second vehicle ( 202 ), whether a structure of a communication voice connection between the first vehicle ( 201 ) and the adjacent second vehicle ( 202 ) should take place; Rejecting the structure of the communication voice link when one of the adjacent second vehicle ( 202 ) sent message does not meet a required criterion. A computer-readable medium having stored thereon a program element that, when executed on a processor, directs the processor to perform the steps of: transmitting a request to the adjacent one second vehicle ( 202 ), whether a structure of a communication voice connection between the first vehicle ( 201 ) and the adjacent second vehicle ( 202 ) should take place; Rejecting the structure of the communication voice link when one of the adjacent second vehicle ( 202 ) sent message does not meet a required criterion.