Method and System for Disseminating Witness Information in Multi-Hop Broadcast Network
First 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, 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 by the source node;
receiving the alert message in the set of relay nodes in the plurality of zones; and
; and
rebroadcasting the alert message by selected relay nodes, and further comprising;
broadcasting, receiving and rebroadcasting witness messages in response to sensing the event, wherein each witness message includes witness information related to the event.
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Abstract
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.
99 Citations
13 Claims
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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, 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:
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sensing an event at a location in the vehicular environment by the source node; broadcasting, in response sensing the event, an alert message by the source node; receiving the alert message in the set of relay nodes in the plurality of zones; and
; andrebroadcasting the alert message by selected relay nodes, and further comprising; broadcasting, receiving and rebroadcasting witness messages in response to sensing the event, wherein each witness message includes witness information related to the event. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. The method of claim 13, wherein the stationary roadside unit relates the alert and witness messages to an emergency response agency.
Specification