Data selection method for reducing the decoding computational complexity of a vehicle-to-X communication system, and vehicle-to-X communication system

• US 9,591,024 B2
• Filed: 07/04/2012
• Issued: 03/07/2017
• Est. Priority Date: 07/05/2011
• Status: Active Grant

• Current Assignee: Continental Teves AG & Company HG (Continental AG)
• Original Assignee: Continental Teves AG & Co. OHG (Continental AG)
• Inventors: Sthlin, Ulrich, Scherping, Richard
• Primary Examiner(s): Brown, Anthony
• Application Number:
  US14/129,575
• Publication Number:
  US 20140143834A1
• Time in Patent Office: 1,707 Days
• Field of Search: 726/3
• US Class Current: 1/1
• CPC Class Codes: H04L 63/20 for managing network security; network security policies in general filtering policies H04L63/0227
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers

Abstract

A data selection method for reducing the decoding computational complexity of a vehicle-to-X communication system. The communication unit is used to transmit and receive vehicle-to-X messages, wherein the vehicle-to-X messages each include at least one useful data portion and at least one header data portion, wherein the at least one header data portion in each case is transmitted in uncoded form, and wherein the at least one useful data portion in each case is transmitted in coded form. The received vehicle-to-X messages are weighted into at least two categories on the basis of the at least one header data portion in each case, wherein the at least one useful data portion in each case is decoded on the basis of the weighting.

Claims

1. A data selection method for reducing the decoding computational complexity of a vehicle-to-X communication system, comprising the steps of:

receiving vehicle-to-X messages by an electronic communication unit in communication with an antenna, wherein the vehicle-to-X messages each includes at least one useful data portion and at least one header data portion,

transmitting by the electronic communication unit to an electronic weighing unit the at least one header data portion in an uncoded form, wherein the at least one useful data portion in each case is transmitted in an encoded form,

processing by the electronic weighing unit the received vehicle-to-X messages with respect to one another, and based on the processing categorizing the received vehicle-to-X messages into at least two categories on the basis of the at least one header data portion,

decoding by an electronic encoding unit the at least one useful data portion as a function of the processing,

wherein the electronic communication unit, electronic weighing unit, and electronic encoding unit are comprised by at least one electronic computing unit, the at least one electronic computing unit being a processor, and

wherein the categorizing of the vehicle-to-X messages by the electronic weighing unit received during operation of a vehicle is based on at least two of the following factors;

an actual speed of a receiver,

a relative speed of the receiver with respect to the transmitter,

a distance of the receiver from the transmitter,

an expected entry point of the transmitter into a critical zone around the receiver wherein the critical zone has an adaptable extent and shape,

a relative direction of travel of the receiver with respect to the transmitter, and

a class of road, and wherein the class of road is formed as a function of at least one of a permissible maximum speed, a lane width, a number of lanes, vicinity to localities, and weather conditions.

2. The method as claimed in claim 1, further comprising in that encoding the at least one useful data portion includes at least one of a data compression and a data compatibilization, and the decoding of the at least one useful data portion comprises at least one of a data compression and a system-dependent data conversion.

3. The method as claimed in claim 1 wherein in that the at least one header data portion comprises at least one of the following information items:

a satellite-supported position information of a transmitter,

a speed information of the transmitter,

an orientation information of the transmitter,

an identification information of the transmitter,

a time stamp,

a type information of the vehicle-to-X message, and

an accuracy characterization of at least one of the at least one information items.

4. The method as claimed in claim 1 wherein the header data portion has a data format which can be processed essentially by a variety of configurations of the vehicle-to-X communication systems without preceding decoding.

5. The method as claimed in claim 1 further comprising in that the weighting is performed in a number of categories corresponding to the number of the received vehicle-to-X messages, wherein the useful data portions of the received vehicle-to-X messages are decoded in a falling weighting sequence until the computational capacity is exhausted or all the useful data portions of the received vehicle-to-X messages are decoded.

6. The method as claimed in claim 1 further comprising in that the decoding of the useful data portion is preceded by a data security checking of a data security portion of the vehicle-to-X message, by data security checking, of a digital data security certificate which is included in the vehicle-to-X message.

7. The method as claimed in claim 1 further comprising the useful data portion is further processed by at least one driver assistance system, wherein the at least one driver assistance system is designed to at least one of warn a driver, engage in the vehicle controller, and to oversteer a driver'"'"'s predefined value.

8. The method as claimed in claim 2, wherein in that the encoding takes place according to the Abstract Syntax Notation One Standard.

9. A vehicle-to-X communication system, comprising:

an electronic computing unit, wherein the electronic computing unit is a processor;

an electronic communication unit in communication with the electronic computing unit, the electronic communication unit configured to receive and transmit vehicle-to-X messages from an antenna,

an electronic encoding unit in communication with the electronic computing unit, for encoding at least one useful data portion of the vehicle-to-X messages to be transmitted, and for decoding at least one encoded useful data portion of received vehicle-to-X messages,

an electronic weighting unit in communication with the electronic computing unit, for processing in each case at least one uncoded header data portion of the received vehicle-to-X messages, and

in that the electronic weighting unit is configure to process the received vehicle-to-X messages with respect to one another and classify the received vehicle-to-X messages into at least two categories on the basis of the at least one header data portion, wherein the electronic encoding unit is configured to carry out decoding with the at least one useful data portion as a function of the processing,

wherein the electronic communication unit, the electronic generating unit, the electronic encoding processor unit, and the processor unit are in communication with the electronic computing unit via data lines, and

wherein the categorizing of the vehicle-to-X messages by the electronic weighing unit received during operation of a vehicle is based on at least two of the following factors;

an actual speed of a receiver,

a relative speed of the receiver with respect to the transmitter,

a distance of the receiver from the transmitter,

an expected entry point of the transmitter into a critical zone around

the receiver wherein the critical zone has an adaptable extent and shape,

a relative direction of travel of the receiver with respect to the transmitter, and

a class of road, and wherein the class of road is formed as a function of at least one of a permissible maximum speed, a lane width, a number of lanes, vicinity to localities, and weather conditions.

10. The system as claimed in claim 9, wherein in that the system additionally comprises a data security unit in communication with the electronic computing unit, for producing a data security portion of the vehicle-to-X messages to be transmitted and for checking the data security portion of the received vehicle-to-X messages.

11. The system as claimed in claim 9 further comprising in that at least one of the communication unit, the generating unit, the weighting unit, the encoding unit, and the data security unit comprise a common chip set of a common electronic computing unit.

12. The system as claimed in claim 9, in that the communication unit is configured to communicate by means of at least one of the following types of connection:

a WLAN connection according to IEEE 802.11,

an ISM connection

a Bluetooth interface,

a ZigBee interface,

a UWB interface,

a WiMax interface,

a infrared link and

a mobile radio link.