Evaluation of Selective Broadcast Algorithms for Safety Applications in Vehicular Ad Hoc Networks
Figure 1
A demonstrative example showing three snapshots from a highway scenario with a 4-lane road segment and 8 cars: (a) periodical emergency warning broadcast is initiated by car 1. The warning is received by cars 2, 3, and 4. (b) Car 4 propagates the message. Car 1 overhears this and cancels its own broadcast sequence. Cars 5, 6, 7, and 8 receive the warning. (c) Car 7 propagates the message. Car 4 overhears it and cancels its own sequence.
