CAR2X receiver filtering based on a receiving corridor in a geographic coordinate system
First Claim
1. A method for filtering a message transmitted between a sender vehicle and a receiver vehicle in a vehicle ad hoc network that contains at least one position of the sender, the method comprising:
- determining, by a global satellite navigation system (GNSS) in the receiver vehicle, a position of the receiver vehicle in a predetermined GNSS coordinate system that describes positions in spherical or ellipsoid geo-coordinates on the earth'"'"'s surface, the predetermined GNSS coordinate system different than a coordinate system of the vehicle ad hoc network;
determining, by the processor in the receiver vehicle, a decision threshold for a maximum distance between the receiver vehicle and the sender vehicle in the predetermined GNSS coordinate system in which the position of the receiver has been determined; and
rejecting, by the processor in the receiver vehicle, the message if a distance between the position of the sender and the position of the receiver in the GNSS coordinate system exceeds the decision threshold in the GNSS coordinate system;
accepting, by the processor in the receiver vehicle, the message if the distance between the position of the sender and the position of the receiver in the GNSS coordinate system does not exceed the decision threshold in the GNSS coordinate system; and
converting, by the processor in the receiver vehicle, the position of the receiver vehicle from the GNSS coordinate system to the coordinate system of the vehicle ad hoc network for further processing of the accepted message.
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Accused Products
Abstract
A method for filtering a message transmitted between a transmitter and a receiver in a vehicular ad hoc network, the message containing at least one position of the transmitter, including: determining a position of the receiver by a global satellite navigation system in a predetermined coordinate system; determining a decision threshold for a maximum distance between the receiver and the transmitter in the predetermined coordinate system in which the position of the receiver was determined; and discarding the message if a distance between the position of the transmitter and the position of the receiver exceeds the decision threshold.
14 Citations
11 Claims
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1. A method for filtering a message transmitted between a sender vehicle and a receiver vehicle in a vehicle ad hoc network that contains at least one position of the sender, the method comprising:
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determining, by a global satellite navigation system (GNSS) in the receiver vehicle, a position of the receiver vehicle in a predetermined GNSS coordinate system that describes positions in spherical or ellipsoid geo-coordinates on the earth'"'"'s surface, the predetermined GNSS coordinate system different than a coordinate system of the vehicle ad hoc network; determining, by the processor in the receiver vehicle, a decision threshold for a maximum distance between the receiver vehicle and the sender vehicle in the predetermined GNSS coordinate system in which the position of the receiver has been determined; and rejecting, by the processor in the receiver vehicle, the message if a distance between the position of the sender and the position of the receiver in the GNSS coordinate system exceeds the decision threshold in the GNSS coordinate system; accepting, by the processor in the receiver vehicle, the message if the distance between the position of the sender and the position of the receiver in the GNSS coordinate system does not exceed the decision threshold in the GNSS coordinate system; and converting, by the processor in the receiver vehicle, the position of the receiver vehicle from the GNSS coordinate system to the coordinate system of the vehicle ad hoc network for further processing of the accepted message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11)
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9. A receiver in a receiver vehicle for receiving a transmission signal transmitted from a sender vehicle that is set up to carry messages having position data pertaining to subscribers of a vehicle ad hoc network in data packets, comprising:
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an antenna for receiving the transmission signal; a global satellite navigation system (GNSS) configured to determine a position of the receiver vehicle in a predetermined GNSS coordinate system that describes positions in spherical or ellipsoid geo-coordinates on the earth'"'"'s surface, the predetermined GNSS coordinate system different than a coordinate system of the vehicle ad hoc network; and a filter apparatus configured to; determine a decision threshold for a maximum distance between the receiver vehicle and the sender vehicle in the predetermined GNSS coordinate system in which the position of the receiver has been determined; and reject the message if a distance between the position of the sender and the position of the receiver in the GNSS coordinate system exceeds the decision threshold in the GNSS coordinate system; accept the message if the distance between the position of the sender and the position of the receiver in the GNSS coordinate system does not exceed the decision threshold in the GNSS coordinate system; and convert the position of the receiver vehicle from the GNSS coordinate system to the coordinate system of the vehicle ad hoc network for further processing of the accepted message.
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Specification