Säker styrning av digital beamformning

William Nylin Eriksson () och Love Barany ()

Sammanfattning

As the number of devices connected via 5G has grown tremendously over the years
since its introduction, the number of unused frequency spectra has grown smaller
and smaller, leading to more overlap and smaller gaps between neighbouring spectra.
To ensure that all current and future devices that occupy these spectra can
work together without interference or interruptions in service, care needs to be
taken when using the radios attached to each device. This Thesis presents an approach
to creating a secure system by securing the control of digital beamforming
radios. This was done in three steps, by targetting three different parts of a digital
communication line: the transmitter, the transmission medium, and the receiver.
Modules were introduced that ensure operations are done correctly and in the
right order, that ensure that data does not become something it was not when
originally transmitted, and that ensure that radios know that they are connected
to a legitimate device. These three steps were simulated and evaluated individually
to ensure each part provided its part of the secure system, and a full system
implementation was then done as a demonstration of a fully secure system. More
work should be done to further ensure the security of devices using this secure
framework.

Handledare: Erik Larsson (EIT) och Joel Åhlund (EIT)
Examinator: Christian Nyberg (EIT)