This paper introduces the integration of communication modelling into design modelling during the early stages of system development. It presents the modelling of flocking behaviour system in SystemC, which is emerging as a suitable language for designing and modelling. SystemC provides a consistent methodology for the design and refinement of complex digital systems. In this paper, a demonstrator implementing communication between particles has been constructed and incorporated into the entire design methodology. The communication has been implemented through the incorporation of a wireless channel that was previously modelled.