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74 Internet of Things Strategic Research and Innovation Agenda
2.6.1.4 Expanding Current Networks to Future Networks
Generalizing the examples given above, the trend may be to expand current end
user network nodes into networks of their own or even a hierarchy of networks.
In this way networks will grow on their current access side by unfolding these
outermost nodes into even smaller, attached networks, spanning the Internet
of Things in the future. In this context networks or even networks of networks
will be mobile by themselves.
2.6.1.5 Overlay Networks
Even if network construction principles should best be unified for the worldwide
Internet of Things and the networks bearing it, there will not be one
unified network, but several. In some locations even multiple networks overlaying
one another physically and logically.
The Internet and the Internet of Things will have access to large parts
of these networks. Further sections may be only represented by a top access
node or may not be visible at all globally. Some networks will by intention be
shielded against external access and secured against any intrusion on multiple
levels.
2.6.1.6 Network Self-organization
Wireless networks being built for the Internet of Things will show a large
degree of ad-hoc growth, structure, organization, and significant change in
time, including mobility. These constituent features will have to be reflected
in setting them up and during their operation [94].
Self-organization principles will be applied to configuration by context
sensing, especially concerning autonomous negotiation of interference management
and possibly cognitive spectrum usage, by optimization of network
structure and traffic and load distribution in the network, and in self-healing of
networks. All will be done in heterogeneous environments, without interaction
by users or operators.
2.6.1.7 IPv6, IoT and Scalability
The current transition of the global Internet to IPv6 will provide a virtually
unlimited number of public IP addresses able to provide bidirectional and