When activating the local dissemination protocols only for
larger groups (∆bc = {2, 3}), the average dissemination delay
increases for scenarios with lower node density (Figures 8a
and 8b). Compared to a direct activation of local event delivery
(BC1P5), especially the upload traffic (Figure 8c) is reduced.
However, the thee to four times increase in the dissemination
delay for lower node densities justifies the default value ∆bc =
1. This ensures that ad hoc delivery of events is utilized as soon
as two nodes are located within proximity