This paper proposes an IR-UWB radio interface layer which is able to deal with WSN context. With this intention, we present a reconfigurable IR-UWB with directional antennas and localization capability at 60 GHz. We introduce the advantages of using the millimeter band, directional antennas, localization and the reconfigurability. We also propose some implementations on a FPGA receiver. II). However, IR-UWB technique is not deprived of drawbacks, and we will expose in the Section III how by using the millimetre-wave band, we could improve the response of our radio interface to the WSN problematic. Section IV will prove the interest of localization in WSN context and how we have design a localization capability