%T YASS: a Scalable Sensornet Simulator for Large Scale Experimentation
%A  Jonathan Tate,  Iain Bate
%E Peter H. Welch,  S. Stepney,  F.A.C Polack,  Frederick R. M. Barnes,  Alistair A. McEwan,  G. S. Stiles,  Jan F. Broenink,  Adam T. Sampson
%B Communicating Process Architectures 2008
%X Sensornets have been proposed consisting of thousands or
   tens of
thousands of nodes. Economic and logistical
   considerations imply
predeployment evaluation must take
   place through simulation rather
than field trials. However,
   most current simulators are inadequate
for networks with
   more than a few hundred nodes. In this paper we
demonstrate
   some properties of sensornet application and protocols
that
   only emerge when considered at scale, and cannot be
   effectively
addressed by representative small\-scale
   simulation. We propose a
novel multi\-phase approach to
   radio propagation modelling which
substantially reduces
   computational overhead without significant
loss in accuracy.