Method and apparatus for vehicle-to-vehicle multi-hop broadcast communication
First Claim
1. Method for vehicle-to-vehicle multi-hop broadcast communication comprising the steps of:
- determining a position data comprising a position, a velocity and a direction of a receiving vehicle, receiving position data comprising position, velocity and direction from sending vehicles, calculating a relative position, a relative velocity and a relative direction between the receiving vehicle and the sending vehicle, calculating a density of vehicles from the calculated relative positions, and periodically sending the position data of the receiving vehicle, wherein a time for periodically sending the position data of the receiving vehicle is set in accordance with information respecting vehicles.
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Abstract
The present invention relates to a method and apparatus for reducing the number of packets in a vehicle-to-vehicle multi-hop broadcast communication. The method determines a position data comprising a position, a velocity and a direction of a receiving vehicle (1, 2, 3, 4), receives a position data comprising position, velocity and direction from sending vehicles (1, 2, 3, 4), and calculates a relative position between the receiving vehicle (1, 2, 3, 4) and the sending vehicle (1, 2, 3, 4). Next, a density of vehicles is calculated from the calculated relative positions. The position data of the receiving vehicle (1, 2, 3, 4) is periodically sent, and the time for periodically sending the position data of the receiving vehicle (1, 2, 3, 4) is set in accordance with the calculated density of vehicles.
61 Citations
20 Claims
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1. Method for vehicle-to-vehicle multi-hop broadcast communication comprising the steps of:
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determining a position data comprising a position, a velocity and a direction of a receiving vehicle, receiving position data comprising position, velocity and direction from sending vehicles, calculating a relative position, a relative velocity and a relative direction between the receiving vehicle and the sending vehicle, calculating a density of vehicles from the calculated relative positions, and periodically sending the position data of the receiving vehicle, wherein a time for periodically sending the position data of the receiving vehicle is set in accordance with information respecting vehicles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Apparatus for vehicle-to-vehicle multi-hop broadcast communication comprising:
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a position determining unit for determining position data comprising a position, a velocity and a direction of a receiving vehicle, a receiving unit for receiving position data comprising position, velocity and direction from sending vehicles, a relative calculating unit for calculating a relative position, a relative velocity and a relative direction between the receiving vehicle and each sending vehicle, a density calculating unit for calculating a density of vehicles from the calculated relative positions, and a sending unit for periodically sending the position data of the receiving vehicle, wherein the sending unit sets a time for periodically sending the position data of the receiving vehicle in accordance with information with respect to vehicles. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. Apparatus for vehicle-to-vehicle broadcast communication comprising:
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a position determining unit for determining a position data of a receiving vehicle, a receiving unit for receiving a data packet from a sending vehicle;
the data packet comprising a vehicle ID, a timestamp, and a position data of a sending vehicle,a calculating unit for calculating a relative position between the receiving vehicle and the sending vehicle based on the position data of the sending vehicle and the position data of the receiving vehicle; and
a sending unit for re-sending the data packet received from the sending vehicle, after determining whether the data packet received from the sending vehicle is sent or not in accordance with the relative position calculated by the calculating unit.
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Specification