WO2016116208A1

WO2016116208A1 - Method for processing vehicle-to-x messages, control device and storage medium

Info

Publication number: WO2016116208A1
Application number: PCT/EP2015/078971
Authority: WO
Inventors: Marc Menzel; Torsten Martin; Alina SHEVCHENKO
Original assignee: Continental Teves Ag & Co. Ohg
Priority date: 2015-01-21
Filing date: 2015-12-08
Publication date: 2016-07-28
Also published as: DE102015200954A1

Abstract

The invention relates to a method for processing vehicle-to-X messages, a control device and a storage medium for carrying out said method. The method according to the invention allows messages to be received, stored and associated with respective applications.

Description

description

Method for processing vehicle-to-X messages, control device and storage medium

The invention relates to a method for processing vehicle-to-X messages as well as a control device and a storage medium for carrying out this method. Vehicle-to-X communication, also known as Car2X communication or C2X communication for short, based on IEEE 802.11p, ITS-G5 or IEEE 1609, is state of the art and completely standardized. The functionality has already been tested in field tests. Functions of the vehicle-to-X communication are, for example, the warning of an emergency vehicle or of a jam end. For this purpose, messages of the type CAM (Cooperative Awareness Messages) and DENM (Decentralized Environment Notification Messages) are typically used. It is an object of the invention to provide a suitable implementation of a Local Dynamic Map (LDM), which is understood to be the implementation of databases of information from received vehicle-to-X messages. It should be mentioned that the term "map" in particular does not mean a topographic digital map.

This is inventively achieved by a method according to claim 1, a control device according to claim 9 and a storage medium according to claim 10. Advantageous embodiments can be taken, for example, the respective subclaims. The content of the claims is made by express reference to the content of the description. The invention relates to a method for processing vehicle-to-X messages. The method comprises the following steps:

Receiving vehicle-to-X messages,

Storing the vehicle-to-X messages in at least one

Database, and

Associate the vehicle-to-X messages with a number of applications. The method according to the invention provides an interface for cross-functional services such as CAM or DENM to the applications. The applications can also be referred to as functions or applications. For example, the applications may be implemented as separate software blocks, as partitions or as hard-wired functions.

In one embodiment, the step of storing is performed before the associating step. The vehicle-to-X messages are thus first stored in a database before being assigned to associated applications.

The database may be executed in a typical and / or known manner, for example as an SQL database.

According to one embodiment, the vehicle-to-X messages are stored in the same database. This database provides a complete picture of the communication. This is especially true in the case where all received vehicle-to-X messages are stored in the database.

According to an embodiment, the method further comprises, prior to the step of storing: Checking the vehicle-to-X messages to see if they are relevant to at least one application,

wherein a respective non-relevant vehicle-to-X message is not stored.

This can be achieved that only those messages are stored in the database, which is actually relevant for at least one application used in the vehicle. This allows the reduction of memory requirements and the complexity of the database. Such a reduction may be particularly useful in terms of reducing the cost of the required hardware, which promotes the rapid introduction and market penetration of vehicle-to-X communication, even in low-cost vehicles.

According to one embodiment, the step of associating is performed before the step of storing. The driving ^¬ imaging-to-X messages can be stored in a plurality of databases, one with each of the databases to-least one application is associated. This is a particularly flexible model, each database can be adapted to the practitioner ^¬-making requirements. This speed and / or memory advantages can be realized.

According to an embodiment, the method further comprises, after the step of receiving and before the steps of storing and allocating:

Decode the vehicle-to-X messages.

This allows access to messages encoded for transmission using a coding algorithm, for example using the ASN .1 algorithm. According to an embodiment, the method further comprises, after the step of receiving and before the steps of storing and allocating:

Coarse filtering of the vehicle-to-X messages, in particular by a plausibility check and / or by a security check.

In this way, possible errors in messages can be detected and incorrectly received or sent messages can be excluded from further processing, for example from saving to a database. Other verification mechanisms can also be implemented, for example to reduce the required computing capacity.

The invention further relates to an electronic control device, in particular a vehicle-to-X communication module, which is designed to carry out a method according to the invention. The electronic control device may in particular comprise memory means and processor means, wherein program code is stored in the memory means, in the execution of which a corresponding method is carried out by the processor means. With regard to the method can be used on all described versions and variants.

The invention relates to a non-volatile com ^¬ computer readable storage medium further containing program code, when executed, an inventive method is performed. With regard to the method can be used on all described versions and variants. Further features and advantages will be apparent to those skilled in the embodiments described below with reference to the accompanying drawings. Showing:

1: a processing of vehicle-to-X messages according to a first embodiment,

2 shows a processing of vehicle-to-X messages according to a second embodiment,

3 shows a processing of vehicle-to-X messages according to a third exemplary embodiment.

Fig. 1 shows the processing of vehicle-to-X messages according to a first embodiment. As in the other figures, the essential processing steps are shown in the form of circles. First, the messages in an input block 10 are decoded and roughly filtered. Plausibility and security checks are carried out. Next, the messages are stored in a common database 20. This database 20 engages Nachrich ^¬ tenfilter 30 to which checks that the data stored in the database 20 messages relevant to an application. As applications, a first application 51, a second application 52 and a third application 53 are shown schematically by way of example here. When a message stored in the database 20 is relevant to one of the applications 51, 52, 53, the message filter 30 forwards this message to the corresponding application 51, 52, 53. In this ^exemplary embodiment, the database 20 provides a complete image of the received vehicle-to-X messages. 2 shows the processing of vehicle-to-X messages according to a second embodiment. In this case, the received messages are also first decoded in an input block 10 and roughly filtered. They are then UNMIT ^¬ telbar fed to a message filter 30, which in this .

b

Embodiment has the task of filtering messages that are relevant to any application 51, 52, 53 used. Only those data which are relevant for the decision of the message filter 30 for at least one of the applications 51, 52, 53 are stored in a database 20. Thus, the required storage space of the database 20 and its complexity can be reduced. The database 20 accesses a data provider 40, which, similar to the message filter 30 according to the first embodiment, picks out relevant data for one of the three applications 51, 52, 53 and forwards them accordingly to the respective application 51, 52, 53.

FIG. 3 shows a processing of vehicle-to-X messages according to a third embodiment. In this case, a decoding and coarse filtering are also first carried out in an input block 10. The messages are then distributed by a message filter 30 to a first Since ^¬ tenbank 21, a second database 22 or a third database 23rd The first database 21 is associated with a first application 51. The second database 22 is associated with a second application 52. The third database 23 is assigned to a third application 53. In each of the databases 21, 22, 23, the messages for each of the applications 51, 52, 53 are stored separately. This makes it possible to adapt each database 21, 22, 23 to the application-specific requirements. This speed and memory advantages can be realized in particular. Thus, the third embodiment represents a particularly ^¬ flexible model.

In general, it should be pointed out that vehicle-to-X communication in particular means direct communication between vehicles and / or between vehicles and infrastructure facilities. For example, it can that is, vehicle-to-vehicle communication or vehicle-to-infrastructure communication. If, in the context of this application, reference is made to communication between vehicles, this may in principle be carried out, for example, in the context of vehicle-to-vehicle communication, which typically takes place without being mediated by a mobile radio network or a similar external infrastructure and which is therefore of other solutions, for example, build on a mobile network to be distinguished. For example, vehicle-to-X communication may be performed using the IEEE 802.11p or IEEE 1609.4 standards. A vehicle-to-X communication can also be referred to as C2X communication. The subareas can be referred to as C2C (Car-to-Car) or C2I (Car-to-Infrastructure). However, he ^¬ invention includes vehicle-to-X communication with accommodation for example, via a mobile network explicitly not. Mentioned steps of the method according to the invention can be carried out in the order given. However, they can also be executed in a different order. In one of its embodiments, for example with a specific set of steps, the method according to the invention can be carried out in such a way that no further steps are carried out. However, in principle also further steps can be carried out, even those which are not mentioned. The claims belonging to the application do not constitute a waiver of the achievement of further protection.

If, during the course of the procedure, it turns out that a characteristic or a group of characteristics is not absolutely necessary, Thus, on the applicant side, it is already desired to formulate at least one independent claim which no longer has the feature or the group of features. This may, for example, be a subcombination of a claim present at the filing date or a subcombination of a claim limited by further features of a claim present at the filing date. Such newly formulated claims or feature combinations are to be understood as covered by the disclosure of this application.

It should also be noted that embodiments, features and variants of the invention, which are described in the various embodiments or embodiments and / or shown in the figures, can be combined with each other as desired. Single or multiple features are arbitrarily interchangeable. Resulting combinations of features are to be understood as covered by the disclosure of this application.

Recoveries in dependent claims are not to be understood as a waiver of obtaining independent, objective protection for the features of the dependent claims. These features can also be combined as desired with other features.

Features that are disclosed only in the specification or features that are disclosed in the specification or in a claim only in conjunction with other features may, in principle, be of independent significance to the invention. They can therefore also be included individually in claims to distinguish them from the prior art.

Claims

claims

A method of processing vehicle-to-X messages, comprising the steps of:

Receiving vehicle-to-X messages,

Storing the vehicle-to-X messages in at least one database (20, 21, 22, 23), and

Associating the vehicle-to-X messages with a number of applications (51, 52, 53).

2. The method according to claim 1,

wherein the step of storing is performed prior to the associating step.

3. The method according to claim 2,

wherein the vehicle-to-X messages are stored in the same database (20).

4. The method according to claim 2 or 3,

which further comprises, prior to the step of storing, the step of:

Checking the vehicle-to-X messages as to whether they are relevant to at least one application (51, 52, 53), wherein a respective non-relevant vehicle-to-X message is not stored.

5. The method according to claim 1,

wherein the step of associating is performed prior to the step of storing.

6. The method according to claim 5,

wherein the vehicle-to-X messages are stored in a plurality of databases (21, 22, 23), wherein each of the databases (21, 22, 23) is associated with at least one application.

Method according to one of the preceding claims, further comprising, after the step of receiving and before the steps of storing and assigning, the following step:

Decode the vehicle-to-X messages.

Electronic control device, in particular vehicle-to-X communication module, which is designed to carry out a method according to one of the preceding claims.

A non-transitory computer readable storage medium containing program code, when executed, executing a method according to any one of claims 1 to 8.