388 Cyber-Physical Systems: From Theory to Practice
devices in such environments, namely, (1) a long-range low-bandwidth link, for example, cellular
interface, to maintain an always-on connection, used in particular by the source and destination nodes,
and (2) a short-range high-bandwidth link, for example, Wi-Fi, to opportunistically exchange large
amount of data with neighboring nodes (which is used by all nodes), since due to node mobility these
links tend to be intermittent.
The Mobicent network architecture consists of three components: (1) a TTP, which stores key
information for all nodes, providing also verification and remuneration services; (2) helpers, which
are mobile or static nodes that help in data relaying using the short-range high-bandwidth ...