DE602004013075T2 - Transmission of alerts between vehicles on a road and a traffic information network - Google Patents

Abstract

The system has radiofrequency transmission terminal for radio broadcasting a dedicated FM program. The terminal comprises an additional receiver for receiving alarm messages from complementary transmitters in vehicles. The receiver sends the messages to a broadcast server. An electronic adaptation circuit of a broadcasting receiver embarked on a vehicle transmits digital alarm signals.

Description

The The present invention relates to the general area of distribution of alarm and safety messages on a traffic axis, the directed at on said traffic axis moving vehicles are and / or emanate from them.

in the State of the art are different solutions for the distribution of alarm or security messages generally known.

As an example, the patent describes US4764978 a transmission system of information issued by emergency vehicles intended for use by road vehicles. These messages are distributed in the frequencies AM and FM so that they are received in the car's car stereos.

The French patent FR2718404 describes a method and apparatus for transmitting road safety information from one road vehicle to another by radio electrical means. This method allows a vehicle, on the one hand, to send information to other vehicles within a few hectares of radius, thanks to a low-power radio-electric transmitter, and, on the other hand, to automatically receive the information emitted by other vehicles and activate an alarm system. which allows the driver to easily interpret the information and to know the type of danger he will encounter (optical or sound system). The device thus allows to warn the driver arriving in a potentially dangerous area and thus to cause them to reduce their speed in order to prevent in series accidents due to a surprise effect and speed.

These solution is efficient only if there is a sufficient percentage of vehicles with the equipment considered equipped is.

Another American patent US4403208 describes a transmission system of alarms or alarm signals between two vehicles by transmitting a radio frequency signal with limited range.

The European patent EP0817151 describes a process to individually alert of incidents of traffic by means of an integrated device and a stationary device by means of radio message broadcasting of incident messages with local primary incident message (M1) based selection. In the stationary device, the coordinates of the incident are determined for each input primary incident message (M1). Secondary incident messages (M2) containing at least the coordinates (CA) of the local selection incident are output in the environment of the incident.

each Receiver device, the one secondary Incident message (M2) receives, derives from the received coordinates (CA) of the incident and their own coordinates (C1, C2, C3) as well as their own coordinates certain modifications a decision regarding the approach or the non-approach of the vehicle to this incident and are in the case of an approximation of Incidentally, a message (A) from.

The French patent FR2629404 proposes an accident warning installation for automobiles comprising means for generating an alarm triggering signal, which means may be realized by an impact sensor or by a manual switch, electromagnetic wave or ultrasonic alarming means, alarm signal receiving means and warning means. In the event of an accident, the impact sensor produces a signal that triggers the output of an alarm, e.g. B. by means of an antenna positioned on the vehicle. All other automobiles provided with a compatible warning installation within the limited range of a maximum distance will receive these alarm signals which will actuate a warning device in these automobiles.

The French patent 9614682 has an effective implementation of emergency communication between vehicles that uses a single frequency and a time-sharing period in recurring cycles that sets the period of sampling. Each cycle is divided into tranches, with the number of tranches determining the immediate capacity of the system (without collision). An automatic but selective relay function is proposed to extend the range across the relay station from cycle to cycle. The synchronization of the structure is ensured by a statistical mode, which makes it possible to dispense with the topology and each reference clock.

The French patent FR2831760 describes a similar time-sharing device that is fully based on a fixed access infrastructure that controls and coordinates the inter-vehicle and infrastructure exchanges. Relay functions are ensured to avoid the masking effects between vehicles. In order to interface with the servers in the infrastructure, the system builds the protocols of the world of the Internet probably for security services (automatic or assisted driving) as well as for logistics or comfort services.

As in the previous solutions it is necessary that the vehicles and possibly the infrastructure on the side of the road all with specific equipment equipped to allow the operation of such a system.

Known are also solutions, the on the transmission of information for Target mobile vehicles (possibly on request). such solutions are described in the following documents.

The document US-2002/0036571 describes an information system for a classic-type vehicle that allows information to be exchanged as to the position of the vehicle, with traffic or similar information using specific equipment to suit the vehicle's needs.

The European patent application EP-1150266 also describes a system to distribute information about the surface condition of the road. This application collectively describes a transmission device of information on a vehicle.

The patent EP-0874344 and the scientific publication XP000536509 (Mitterhumer: "Data broadcasting with DAB") concern simple systems for mobile reception FM or DAB EP-0575246 focuses on the isofrequency broadcast of information on an antenna network. The application EP-1085658 treats only the transmission of information on request for a radio.

The European patent EPA1286507 describes a vehicle-to-vehicle communication system in ad hoc mode or, more specifically, as a loop from fixed access points (GW). It gives the next access point a role as relay station to the vehicles in range.

The European patent EP0982698 A2 describes a traffic discrimination and alert distribution system that utilizes a distributed server infrastructure and a chain of coverage based stations.

such Solve documents not a problem affecting the distribution of targeted alerts aimed at by the users in a network of the street type become.

at these previous solutions it is necessary that the vehicles and possibly the infrastructure on the side of the road all with specific equipment equipped to allow the use of such a system.

• – Zellennetze;
• – schnurlose lokale Netze;
• – dem Straßenverkehr dedizierte Funkausstrahlungsnetze in Isofrequenz mit Unterstützung einer spezialisierten Übermittlung von Mitteilungen (RDS-TMC);
• – laterale Nachbarschaftskommunikationen vom Typ europäisches DSRC oder Magnetschleifen (BOCOM);
• – Kommunikationen von Fahrzeug zu Fahrzeug über kurze Distanzen mit Relais (MANET, MTNET) oder ohne Relais (VIGILANT, IVHM);
• – die Kommunikationsnetze Boden/Zug für die sicherheitsrelevante kontinuierliche Kontrollsteuerung, eventuell mit Unterstützung des Videoflusses (SOFRANET).

More generally, the state of the art in telecommunications has numerous cordless network technologies, in particular:

• - cell networks;
• - cordless local area networks;
• - radio-frequency dedicated radio communication networks, dedicated to road transport, with the support of specialized communications (RDS-TMC);
• Lateral neighborhood communications of the type European DSRC or magnetic loops (BOCOM);
• - Vehicle-to-vehicle communications over short distances with relays (MANET, MTNET) or without relays (VIGILANT, IVHM);
• - The communication networks ground / train for the safety-related continuous control control, possibly with the support of the video flow (SOFRANET).

The the highways dedicated radio frequency networks in isoffrequency are called "FM" or "DAB". The Networks FM (Frequency Modulation) have their own infrastructure, which set up along the highways in two successive generations is: analog amplifier in cascade form directly in band II FF (VHF: 107.7 MHz or others in Europe); then the transport via a separate network (radio links, Optical fibers or satellite links) and coordinated distribution in Volume II FM. The format used is the classic analogue Format RCA for Hi-Fi stereo (G + D and G - D with pilot carrier channel), to the one or more sub-carrier channel / sub-carrier channels for additional services added, such. B. the broadcast transmission of messages RDS-TMC (at 57 kHz). The networks DAB (Digital Audio Broadcast) for highways are in the project stage, and their future depends entirely generally from the future of technology DAB itself. It deals It's a purely digital distribution system based on a modulation format with multi-carrier channel OFDM (Orthogonal Frequency Division Multiplex) is based.

Of the biggest disadvantage these nets consist in the counterpart of their simplicity: they remain limited to one direction and are for that the collection of information from mobile devices unsuitable.

The lateral communication systems of the type DSRC (ETSI: Digital Short Range Communications, on the 5.8 GHz radio band) or magnetic loop (BOCOM on the HF 7.5 MHz band) have limited area coverage in the vicinity of fixed installations. Their asymmetry, which constitutes or will make their mark on carmakers, prevents any possible expansion in vehicle-to-vehicle communication.

The Systems for direct communication from vehicle to vehicle are currently for the fast transfer from directly for the following vehicles issued warnings before the river of Vehicles in the coming. The content is made up of short messages in real time formed, which requires short latency and transit times and good availability.

The techniques used are isoframes with time distribution (TDMA), whether structured or not, as well as the automatic and cooperative routing between mobile devices to increase the reach in the axis of the traffic route. As significant examples of these systems, the following systems can be mentioned:
MTNET (industrial product originating from the demonstrators MANET from PROMOTHEUS and DRIVE) operates in assignment without collision and in selective forwarding via relay stations. The vectors VIGILANT and IVHW work in competition and with simple relay station (point to point).

such, Systems that focus on local security should be accessible to everyone fixed infrastructure independent global security promotes the principle of redirection to a possible infrastructure point for the purpose of coordinated actions with the machining centers. One of the advantages of the transfer MTNET is the facilitation of such forwarding. The Program ARCO leads a a communication satellite based architecture, the transparent cooperation between vectors of vehicle allowed to vehicle and from vehicle to infrastructure. The future program SARI represents the generalization of solutions from vehicle to vehicle of the type MTNET or IVHW each to a fixed access to the infrastructure in view. The possible Technologies are still in the experimental stage. The international Working groups (ANSI, ETSI, ISO) for CALM (Continuous Air Interface for long and medium distance) partly take the principles of this Programs and solutions for one Application at 5.9 GHz again.

In the associated area of rail transport will be different Solutions for the security relevant Control control of trains proposed from the ground (CBTC: "Communication Based Train Control). Some are derived from the Wi-Fi, with some doubt about the services and the possible Cohabitation with the office and the applications for the wide audience exist. Parallel to the wi-fi is also a derivation of the CALM by adapting the original intended for the road in Considered. Other solutions are owner solutions, which more or less closely with the applications (automatic control and regulation) are connected. Finally, there is one as SOFRANET (Trade name) designated solution, a good compromise between the level of performance and openness to others Offers standards.

SOFRANET beats an architecture that has the characteristics of radiating per Radio between the trains and a series of cooperative base stations. A threefold diversification of transmission makes it possible to bring the robustness to an unprecedented level. The Isoffrequency resource is split into high peak-throughput TDMA, which is controlled by the infrastructure with management of mobility becomes. The system is essentially aimed at vehicle communication (Train) with infrastructure, but is a reserve for forwarding between vehicles (trains) in a difficult environment (underground in the tunnel and obstacles of the type "traffic jam" from a row of cars on the other hand, between the stations spaced up to 2,000 meters} intended. The structure is equal to one channel per distribution direction redundant (1 + 1) designed; It supports IP v6 and its enhancements and is managed under SNMP on a standard platform.

The Existing safety-related control controls are with the exception of the SOFRANET for The vehicle infrastructure is dedicated and can not be the solution of Take vehicle to vehicle, especially not in the absence of infrastructure. Furthermore are the services of the real time in relation to the respective need the street abound available while the ranges are rather lower.

In addition, the patent application EP-0994449 which describes a communication system between an infrastructure and vehicles, which combines means for radiating and individual connections to the vehicle in two directions. These individual connections are independent of the means of distribution, the base stations being different from the distribution stations. With this solution, it is not intended that the connections can be made in two directions directly between the vehicles without going through the infrastructure.

In view of the prior art, the object of the invention is to provide a reliable Lö to effectively propose the distribution of a warning even if only a reduced number of vehicles are equipped with specific equipment whose equipment or infrastructure reimbursement costs are affordable, with a minimum of adaptation already existing infrastructure is used.

The The present invention relates in particular to a wireless Communication network situated along a road traffic route and the set up on the side strip of the way and in the Vehicles integrated transmitter and receiver devices to forwarding the corresponding data. The Forwarding will be done automatically on a single channel according to several any loops in cascade form or parallel to the vehicle type to vehicle, vehicle to infrastructure and infrastructure to vehicle carried out.

More specifically, the invention applies to highways, ring roads, highways and highways, with the threefold goal:
supporting safety as a top priority,
help with administration and control, as a medium priority,
improving the comfort of users as a subordinate priority.

Except the Covering an infrastructure, eg. B. on the side streets, allowed the invention support a minimum of security features solely through communication from vehicle to vehicle. The transition in the frame and outside the infrastructure is open without interruption.

The goal is to ensure the following services while meeting their inherent requirements for availability, increase and output in real time, yet hierarchically rank them:
Communication at more or less short distance of warnings, warnings and information in connection with incidents occurring in the preceding traffic,
Broadcasting instructions and compiling information to and from the control centers and security posts
Communication in connection with the logistics of the concessionaire and the manager of the traffic route, Interactive consultations of local or regional servers regarding the environment (weather, tourism, various facilities),
Interactive consultations of nearby or remote, operated or not operated, free or paid general-purpose servers (INTERNET network).

object The invention is in particular, the described disadvantages of solutions of the prior art for to resolve the exchange of "target messages" that be described as messages to the senior security services, but also the complementary Logistics services, for comfort or commercial use. A dual mode vehicle to vehicle and vehicle to infrastructure becomes vehicle for consider the exchange of security target messages.

To For this purpose, the invention relates to a distribution system of destination messages on a road network according to the claim 1.

each said stations preferably comprises means for forwarding from through the additional receiver received messages to a distribution server for alerts.

The System advantageously includes a distribution server containing the messages on the radio distribution network.

According to one In a special variant, the system comprises an electronic matching circuit a radio distribution receiver, the for the output of a digital warning signal integrated into the vehicles is.

Of the said electronic circuit is preferably connected to a with the receiver antenna connected to the car radio common antenna.

According to one Variant includes the system transmitter, which is for the localized output of alerts are integrated into the mentioned stations.

In In a preferred embodiment, the system is characterized that broadcasting the alerts with an isoffrequency resource is realized that in the order of magnitude a road network is generalized.

Especially can the transmission the warning messages are realized on a radio distribution channel, in fuller Compatibility with Dedicated to the original service for the regulation of road traffic.

To For this purpose it is advantageous to use a format with spectrum distribution with a protection by the possibly divided into particles code dependent on from the geographical area, the typology of the traffic route or the identity to use the administrator.

With the proposed system is the distribution of the isoffrequency resource in TDMA (Time Division Multiple Access: multiple access to distribution in the sequence) structured or not, synchronous or asynchronous Firmly adhering to successive temporal tranches, however parameterizable size is carried out in which the banalized data grid by the different vehicles or base stations of the infrastructure can be transmitted.

In The infrastructure will be identified by an identifiable signature and according to one regular time Motif specific tranches associated with the synchronization of the each exchange if the said infrastructure is available.

The System sees the systematic reservation of a tranche after each useful Tranche ago, by a mobile device for the purpose of immediate Forwarding through the current base station (i) of the eventual Infrastructure in electromagnetic range of the mobile device without Intervention of the server centers is issued. Furthermore does she have the capacity it's the parent (i - 1) and the subordinate (i + 1) base stations depending on the topology to allow or not to permit such a second time Forward warning in the original tranche.

The System manages the access priority to other services between Vehicles or between vehicle and servers connected to the infrastructure are.

The practical realization uses one for the integrated part Part of the modules of a modern car radio, which has a transmitter module, a duplex device - for switching or otherwise -, a specific modem and a digital module for signal processing and a digital interface module are assigned. For the firm Part uses the realization the reuse of the radio distribution transmitter FM on the shoulder of highways, giving each of them a receiver, a Modem and a digital processing and interface module is added, which is symmetrical to those of the integrated part, as well as a possible one Connection to transport networks (operated or not operated Intranet and internet services).

When The system proposes an alternative to the reuse of the FM radio stations the reuse of emergency telephones suitably by introducing transmitter modules, a recipient, a modem, a processing device and a digital interface of the same type as those already used have been renewed.

According to one special feature, the system is remarkable in that the Isoffrequency resource associates with a band FM radio distribution channel II VHF with a width of 450 kHz or a channel identify can be equated in the low UHF range (at around 400 or 800 MHz) or even a structure of narrow band link channels VHF (40-200 MHz).

According to one special feature, the system is remarkable in that the Channel of 450 kHz already occupied by a radio broadcast program that can be the traffic of the type "highway FM "at 107.7 MHz is dedicated. The format used allows the guarantee of mutual compatibility with a low throughput for the new services (4.5 KO / sec., as a guideline).

According to one special feature, the system is remarkable in that this Throughput at a release or specialization of the mentioned 450 kHz channels to at least 64 KO / sec. can be increased. This solution allows the increase of secondary Services to support the Infrastructure.

According to one special feature, the system is remarkable in that the Alarm service through raster of several dozen bytes (typically 8 to 32) which is in tranches of several tens of milliseconds (typically 10 to 100) for a peak throughput of a few KO / sec. (typically 2.4 to 9,6) with a capacity deposited by a few dozen simultaneous alarms (typically 20) becomes; All these values remain parameterizable in a further measure.

According to one special feature can the Radio frequency characteristics of the equipments be adapted to coincide with the geographic repetition of radio broadcasting FM (5 to 20 km) or emergency call (2 to 3 km) compatible to be.

A The aim of the invention is the suitability for cooperation with a first type of existing infrastructure, namely the dedicated radio broadcast networks FM by means of a minimum of adaptation of the same. This objective is guaranteed with direct reuse of the resource, the for the radio broadcast is assigned in simple overlay, so that the existing stations are used directly again.

Further Features and advantages of the invention will become apparent upon reading the following Description of a preferred implementation mode that is considered simple illustrative example and by no means limiting as well as the attached Drawings more clearly in which:

1 a general overview of a communication network according to the invention. The left-hand part shows the functioning, which is based on an infrastructure fully equipped with communication stations on the side of the road (from the transmission material to the various service centers); the right-hand part shows the limitation on the direct functioning between vehicles outside the coverage of an infrastructure with the maintenance of an autonomous minimum security service.

Under Infrastructure coverage manages mobility at two levels: a micro-mobility from station to station (gliding along the infrastructure, passing through the physical layer is maintained); and a mobility on the Level of the network, which accurately reflects the progress of the "Mobile IP "of the protocol IP v6 takes over (Crossing one sector on its successor sector). The system can work If necessary, settle for one or the other.

2 represents the architecture of the infrastructure equipment, with the existing (possibly reused) ( 200 ) and the additives associated with the invention are distinguished from each other. At a maximum reuse is the current station that already has an output chain ( 208 and 209 ), the circuits for shaping and modulation of the radiated original signal ( 204 to 207 ), essentially a reception chain ( 201 to 213 ). The local forwarding is done by a direct connection between the added modem ( 212 ) and the original output chain superimposed with digital modulation. The ascending and descending connections ( 214 ) with the centers in the background use the existing digital transport network via the basic multiplexer E1 or Ethernet ( 203 , which is not fully utilized in the original service).

3 represents the architecture of the vehicle-integrated equipment, which, by means of a few additional modules, is directly connected to that of a modular car radio receiver ( 300 ) is placed. These include an antenna duplexer ( 307 ), a low power transmitter ( 308 ), a possible module of an intermediate frequency (FI, 309 ) as well as a digital modem ( 310 ), the signal processing circuits serving the different services ( 311 and following). An interface is provided between the modem and the FI level of the car radio receiver.

4 represents the timescorer of the cycles and tranches that delimit the data rasters that have a trivialized length for a lineup. Two types of implementations are possible: synchronous or asynchronous. Synchronous operation is justified, in particular, under the control of infrastructure, and the transition from autonomous asynchronous operation (where the duration is defined locally without a global reference) to synchronous, lean operation governed by the clock of the Fixed network is controlled when the vehicle enters the coverage of the infrastructure and vice versa.

According to the invention the tranches are joined in pairs: there are pairs of tranches for the mobile devices and pairs of tranches for the fixed devices, the latter being arranged in a recurring manner, that they determine the rhythm of the cycles. A mobile device can be one Issue safety message (eg a warning) as soon as the channel is free is by occupying a tranche. The second installment of the couple is for the eventual forwarding through the current station (i) of the infrastructure released if the service justifies it. A second redirect will be as an option above and / or below (stations i - 1, 1 + 1) offered by the first tranche of data collection again is used. These fast redirects (in the cycle) Do not prevent the repetition in the long run by the effect the server centers (which provide processing with added value can).

The first tranche of a fixed (infrastructure stations) assigned Pair contains Subordinate information, in particular for the synchronization of the structure and the multiplexing circuit of the successive stations). The second tranche is a tranche for requesting reservations of resources by the mobile devices with respect to the secondary services. There are through the mobile devices with an access period that happens to be of they were pulled along a discrete grid, flags deposited. The infrastructure equipment leads the Processing the adequate priority by, by the security measures largely given priority was admitted at the beginning of the cycle, and by a margin that is at least equal to a pair of tranches, left is before the secondary Service messages (at the end of the cycle) are allowed through. In the first Tranche, the current station i turns to a mobile device (descending Direction of the data) while the mobile device answers him in the second installment of the pair (ascending direction the data).

According to a particular embodiment of the invention, the system grants the mobile sharing tranche pairs for the secondary services according to the order in which they reserve their flags in the for this purpose in the current cycle Tranche of the station i have deposited. Some resilience can be ensured (retention of the reservation on a few cycles) if the condition of the traffic allows it. Any collision detected in the first part of the cycle and on the border between the security service and the secondary services will be resolved in the subsequent cycle to the detriment of the secondary services.

in the autonomous operation, there is neither a secondary service nor a relaying and the second tranche of the pairs is then exploited to the uncertainties to catch the synchronization between the mobile devices, in particular in asynchronous mode. The mobile parts easily capture the transition of the autonomous regime to the ajar regime through the periodic introduction the tranche pairs signed by the next station (s) become. The reverse transition is done by default.

The System includes some freedom of parameterization of his Time writer in dependence the characteristics of the installation (eg distance between stations), the required guarantees and expected traffic, and to a lesser extent of for the secondary ones Services desired Profile. It is possible in particular Wake up intervals between the tranches and between the pairs of tranches insert, to consider physical limitations such as For example, the time of distribution and the time of regression the transmitter and the receiver (Functioning as a simplex in rotation).

It It should be noted that the invention is not limited to a pure hardware installation limited, but that it is also in the form of a sequence of instructions of an IT program or any other form that can be implemented, which is a hardware part and a software part (in particular in the form of a protocol) mixed together on the ground and on board, by the functional signal referred to as TS ("signal processing") blocks is supported. Similar functional blocks are to be provided in the server centers.

The general principle of the invention uses a network topology of the type "bandwidth" or "band", which are targeted Applications on the road are adjusted.

It It should be noted that the invention is not limited to safety the street applicable, but to safety functions of the same type for others, guided or not guided Means of transport: railway, subway, waterways (rivers, canals, fairways) and straits, such. The English Channel), or even aircraft in their air corridors.

Claims (24)

Distribution system for destination messages on a traffic route, the system comprising a plurality of vehicles and a distribution infrastructure on the traffic route, the radio frequency transmission stations ( 200 ), which are dedicated to the broadcast of a program by radio, z. B. a dedicated FM program, said transmitting stations each having an additional receiver ( 210 to 214 ) suitable for receiving destination messages originating from complementary transmitters ( 307 to 315 ), which equip at least some vehicles, characterized in that the said transmitting stations ( 200 ) laterally equip said traffic path and are adapted to radiate said destination messages by superimposing to the dedicated program in said radio broadcast channel. Target message distribution system according to claim 1, characterized in that it comprises an electrical matching circuit ( 307 to 315 ) of a radio broadcasting receiver ( 300 ) integrated in vehicles for issuing a digital warning signal in the form of destination messages on the same channel as the radio broadcast. Target message distribution system according to claim 2, characterized in that said electronic circuit ( 307 to 315 ) with an original antenna ( 301 ) connected to the radiotelephone receiver ( 300 ) is provided, which ensures the reception of the radio broadcast of said dedicated program by the vehicles. Distribution system for Target messages according to claim 2 and 3, that about it In addition, a direct communication mode between vehicles outside the coverage of any infrastructure. Distribution system for Target messages according to claim 1 to 3, characterized in that the system beyond includes a broadcast server in the infrastructure, this being Server receiving alerts, the alarm messages received on the radio broadcast network again and broadcasting equipment for security services and others, not priority Includes services by making a light, along the road deployed infrastructure used. Distribution system for destination messages according to at least one of the preceding claims, characterized in that the broadcasting and reception of the alarm messages in a unique Fre frequency channel is realized, which is generalized on the scale of a network that includes a variety of traffic routes. Distribution system for Target messages according to at least one of the preceding claims, characterized in that the broadcasting of the alarm messages without multiplexing the traffic control dedicated FM radio channel in full compatibility overlaid with the original network becomes. Distribution system for Target messages according to at least one of the preceding claims, characterized in that the broadcasting of the warning messages according to a Format with distribution of the spectrum, with a protection by the possibly depending from the geographical area, the typology of the traffic route or the identity realized by the administrator of particularized code. Distribution system for Target messages according to at least one of the preceding claims, characterized in that it is the structured or unstructured, synchronous or asynchronous means of radiating in isoffrequency in TDMA or multiple access with temporal distribution under consideration of consecutive tranches (ALk-RLk, Sdu-Smu), but parameterizable size divides, in which the banalized data grid by the different Vehicles or base stations of the infrastructure can be transferred. Distribution system for destination messages according to at least one of the preceding claims, characterized in that it is the infrastructure specific tranches (INF, RES) with an identifiable signature and according to a temporary regular pattern allocates and thereby facilitates the synchronization of the transmissions, if said infrastructure available is. Distribution system for destination messages according to at least one of the preceding claims, characterized in that it systematically a tranche (RLk) after each alarm tranche issued by a handset (ALk) for immediate takeover by the current station or base station of the order i of possible infrastructure in the electromagnetic range reserved by the handset without the intervention of the server centers. Distribution system for destination messages according to at least one of the preceding claims, characterized in that it systematically a tranche (Smu) after each output by a base station to a handset (u) Tranche (Sdu) so reserved that the handset in this second tranche the base station answers. Distribution system for destination messages according to at least one of the preceding claims, characterized in that it gives the handsets tranche pairs (Sdu, Smu) for the secondary Services according to the order granted in them their flags in the tranche of reserved for this purpose in the cycle current pillar i have stated, it being understood that each on the first part of the cycle and on the border between the security service and the secondary services detected collision through the following cycle to the detriment the secondary services solved becomes. Distribution system for destination messages according to at least one of the preceding claims, characterized in that it has the capacity according to the topology and starting from a sequence bank i above the columns or base stations, the order i + 1 and below, the order i - 1 the Forwarding such an alarm in multiple ways in the same Tranche as the station i permit. Distribution system for destination messages according to at least one of the preceding claims, characterized in that it is the access priority to others Services between vehicles or between vehicles and with the Managed infrastructure connected servers. Distribution system for destination messages according to at least one of the preceding claims, characterized in that it for the integrated part of a part of the modules of a modern car radio ( 300 ), to which a transmitter module ( 308 ), a switching duplexer ( 307 ), a specific modem ( 310 ) and a module for processing digital signals and interfaces ( 311 to 315 ) assigned. Target message distribution system according to at least one of the preceding claims, characterized in that it allows the reuse of the transmitters ( 200 ) for FM radio broadcasting on motorway side strips, by giving each of them a receiver ( 210 ), a modem ( 212 ) and a processing and interface module ( 213 ), which is symmetrical with those of the integrated part, and any connection (214) with the transport networks for the operated or non-operated intranet and Internet networks. Target message distribution system according to at least one of the preceding claims, characterized in that it permits the reuse of emergency call columns which are created by the introduction of transmitter modules ( 200 ), a recipient ( 210 ), a modem ( 212 ), a digital editing and interface ( 213 ) of the same type as those renewed with the dedicated FM radio broadcasting are used. Distribution system for destination messages according to at least one of the preceding claims, characterized in that the resource is a radio broadcast channel Area II VHF FM with a bandwidth of 450 kHz or equivalent Channel with low UHF range of the order of 400 or 800 MHz or even a group of narrow channel VHF in of the order of magnitude from 40-200 MHz is. Distribution system for destination messages according to at least one of the preceding claims, characterized in that the channel at 450 kHz also by a radio broadcasting program is assigned to the traffic of the type "highway FM "at 107.7 MHz Dedicated, the format used is the guarantee of mutual compatibility with a low throughput for the new services (indicative 2.4 to 9.6 kB / s) allowed. Distribution system for destination messages according to at least one of the preceding claims, characterized in that the throughput at a release or specializing the said 450 kHz channel on at least 64 kB / sec. is increased. Distribution system for destination messages according to at least one of the preceding claims, characterized in that the alarm service is represented by a grid of 8 guaranteed up to 32 bytes which is in the tranches with a few tenths of a millisecond for one Peak throughput of 2.4 to 9.6 kB / sec. be deposited. Distribution system for destination messages according to at least one of the preceding claims, characterized in that the radio frequency characteristics of the equipment can be adjusted to with the geographic repetition of the radio broadcasting stations To be compatible with FM, which is 5 to 20 km or the emergency phones, the 2 to 3 km. Distribution system for destination messages according to at least one of the preceding claims, in which the traffic route belongs to a network of the group, the a road network, a rail network, a metro network, a shipping route network and a group of air corridors.