Modeling interference for wireless sensor network simulators

Any radio signal gets exposed to some attenuation over dis- tance, and is received at the receiver as its distorted version and is superposed with other wireless signals transmitted in the neighborhood. In wireless communications, the use- ful signal is usually decoded by assuming the sum of all other wireless signal transmissions as noise. Interference be- tween coexisting transmissions can cause severe performance degradation in wireless sensor networks (WSNs). In this paper we have reviewed interference models for wireless sensor networks. Since a decade or more, densifica- tion of networks increases the impact of interference. New models have been proposed but are not yet included into network simulators. This could be source of a big difference between simulations and real deployments.