Connecting wireless sensor networks (WSN) by the air be- comes attractive due to advances in Satellites and Unmanned aerial vehi- cle (UAV). This work focus on specification and simulation of situations where several distant WSN have gateways visited periodically by a mo- bile on a static path. To develop and evaluate collection and control services, it is first needed to run system level simulation. This paper re- ports on producing automatically representations of complex topology where mobile cooperate with sensor fields with respect to timing con- straints from both sides. Simulation programs are produced for graphic accelerators (GPU), and concurrent process architectures.