  COOJA is a network simulator developed for wireless sensor networks. It can
be used for high-level algorithm development as well as low-level device driver
implementations for accurate simulation of wireless sensor networks before
deployment. However, in a simulation Cooja assumes that the nodes are only
equipped with omnidirectional antennas. There is currently no support for
directional antennas. Due to the growing interest in the use of directional or
smart antennas in wireless sensor networks, a model that can support
directional antennas is essential for the realistic simulations of protocols
relying on directional communication. This paper presents work on extending
COOJA with a directional antenna model.
