Date Added: Feb 2012
In wireless sensor networks, the main objective function is the energy consumption and the constraints are the packet reliability and delay. To reach a maximum efficiency, cross-layer interaction is a major design paradigm to exploit the complex interaction among the layers of the protocol stack. In this paper, the combination of novel protocol Breath and HMAC are proposed for control applications. The MAC layer emulates a full-duplex logical communication channel in a multi-point network. This channel may provide unicast, multicast or broadcast communication service. Breath is designed for WSNs where nodes attached to plants must transmit information via multihop routing to a sink.