  This paper presents the DoRa protocol, which is a new cross-layer protocol
for handling the double radio of nodes in wake-up radio scenario. The
implementation details in OMNET++/MiXiM are also given, with a focus on the
implemented MAC layers. The main goal of the DoRa protocol is to reduce energy
consumption in wireless sensor network, by taking full advantage of the passive
wake-up scheme. The performance of the DoRa protocol is then evaluated and
results are compared with B-MAC and IEEE 802.15.4 protocols.
