5. A critical resource constraint in WSNs is energy; this is not always the case in
MANETs, where the communicating devices handled by human users can be
replaced or recharged relatively often. The scale of WSNs (especially,
C1WSNs) and the necessity for unattended operation for periods reaching
weeks or months implies that energy resources have to be managed very
judiciously. This, in turn, precludes high-data-rate transmission.