  Sharing a common clock signal among the nodes is crucial for communication in
synchronized networks. This work presents a heartbeat-based synchronization
scheme for body-worn nodes. The principles of this coordination technique
combined with a puncture-based communication method are introduced. Theoretical
models of the hardware blocks are presented, outlining the impact of their
specifications on the system. Moreover, we evaluate the synchronization
efficiency in simulation and compare with a duty-cycled receiver topology.
Improvement in power consumption of at least 26% and tight latency control are
highlighted at no cost on the channel availability.
