Wireless Network Design: Optimization Models and Solution ...

15 Major Trends in Cellular Networks and Corresponding Optimization Issues 371
and the Philippines. This is a primary example of leveraging the trust relationship
between the CSP and the subscriber, the subscriber identity infrastructure and the
ubiquity of the mobile phone.
15.9 Conclusions
The advent of ubiquitous mobile broadband access will put tremendous pressure on
the MNOs, who need to cope with the surge in traffic. They will need to reinvent
themselves to tackle very challenging optimization problems related to decreasing
the cost per byte and/or identifying new opportunities to increase revenues. There is
an opportunity to extend services to the billions of the world’s lowest income people,
who mostly live in rural areas. Such an opportunity requires innovative approaches
to dramatically reduce the user TCO and/or provide added value services geared
towards the low income population.
Acknowledgements The author would like to thank the editors for their helpful comments and
suggestions, and Nokia Siemens Networks for providing the figures.
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