초록 ▼

Information related to a vehicular environment is disseminated in a multi-hop broadcast network of nodes. Vehicles and roadside units are equipped with the nodes. An event is sensed at a location by a source node. In response, zones are associated with respect to the location of the source node. Eac

Information related to a vehicular environment is disseminated in a multi-hop broadcast network of nodes. Vehicles and roadside units are equipped with the nodes. An event is sensed at a location by a source node. In response, zones are associated with respect to the location of the source node. Each zone is logically asymmetric and disjoint from the other zones. An alert message is broadcast, received, and then rebroadcast by other vehicles according to the locations of the vehicles in the zones. The nodes can also disseminate witness information.

대표청구항 ▼

I claim: 1. A method for broadcasting witness information related to a vehicular environment using a multi-hop broadcast network of nodes, and wherein the nodes include a source node and a set of relay nodes in a plurality of zones, wherein each node includes a transceiver and a processor for perfor

I claim: 1. A method for broadcasting witness information related to a vehicular environment using a multi-hop broadcast network of nodes, and wherein the nodes include a source node and a set of relay nodes in a plurality of zones, wherein each node includes a transceiver and a processor for performing steps of the method, and wherein the vehicular environment includes a plurality of vehicles, and wherein each vehicle is equipped with one of the nodes, comprising the steps of:sensing an event at a location in the vehicular environment by the source node;broadcasting, in response sensing the event, an alert message including the location of the event by the source node;receiving the alert message in the set of relay nodes in the plurality of zones;rebroadcasting the alert message by selected relay nodes selected by the distance to the event, and further comprising:receiving the alert message and broadcasting witness messages by the selected relay nodes in response to receiving the alert message, wherein each witness message includes witness information related to the event, wherein the witness information depends on angles between the selected relay nodes and the source node with respect to a direction of travel of the vehicles, and vehicle identification number of the selected relay nodes.