438 Simulation Technologies in Networking and Communications
nodes in WSNs, high scalability, energy constraints, and omnidirectional radio communica-
tion force researchers to introduce different forwarding techniques than those used in wired
or even ad hoc networks. Following Ref. [4], another aspect and factor inuencing routing can
be pointed out. Unfortunate node deployment may seriously affect routing performance short-
ening network lifetime. If the power demands related to a routing method are too high, the
network will lose faster its accuracy and become fragmented. Sensor devices may be designed
for different tasks and node heterogeneity will have to be considered. Environmental condi-
tions change dynamically and some nodes may ru