Industrial Technology Research Institute

Institute for Information Industry

Shih-Yang Lin

Chung-Ming Huang

Yi-Chun Lin

Syuan-Yi Chen

Ching-Yuan Lin

A transmission control method for a vehicular ad hoc network system having a plurality of mobile nodes is provided. The mobile nodes include a source node, a destination node, and a plurality of relay nodes. The source node transmits a data packet to the destination node through the relay nodes. The method includes each mobile node capturing mobility information being periodically broadcasted from neighboring mobile nodes to correspondingly update the connection state table thereof, wherein the connection state table records the coverage remaining time between the mobile node and neighboring mobile nodes; when any of relay nodes determines that the coverage remaining time between the relay node and the subsequent mobile node is less than a predefined threshold, the relay node transforms into a proxy node, stores the data packet, and establishes a reliable sub-connection between the proxy node and a next proxy node or the destination node.

Transmission control method and communication apparatus using the same for vehicular ad hoc network system

Disclosed herein are an apparatus and a method for warning of vehicle collision. The positioning and state-reporting signal of a present vehicle is sensed and that of a target vehicle received. The signals are respectively converted to velocities. The relative velocity of the vehicles and the relative position of the vehicles after a time interval are obtained. The driver of the present vehicle is warned when the normal distance from the present vehicle to the line indicating the direction of the relative velocity is determined to be at a minimum and not greater than a warning distance.

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Changhua County, Taiwan

Shih-Yang Lin