  In this paper, we investigate the Internet of Bio-Nano Things (IoBNT) which
relates to networks formed by molecular communications. By providing a means of
communication through the ubiquitously connected blood vessels (arteries,
veins, and capillaries), molecular communication-based IoBNT enables a host of
new eHealth applications. For example, an organ monitoring sensor can transfer
internal body signals through the IoBNT for health monitoring applications. We
empirically show that blood vessel channels introduce a new set of challenges
for the design of molecular communication systems in comparison to free-space
channels. We then propose cylindrical duct channel models and discuss the
corresponding system designs conforming to the channel characteristics.
Furthermore, based on prototype implementations, we confirm that molecular
communication techniques can be utilized for composing the IoBNT. We believe
that the promising results presented in this work, together with the rich
research challenges that lie ahead, are strong indicators that IoBNT with
molecular communications can drive novel applications for emerging eHealth
systems.
