Abstract—With the shift towards decoupling of data and
control plane and the softwarization in mobile networks, delivery
of mobile network control functionalities can be foreseen as over
the top services. We envisage such move within the paradigm
of Functionality as a Service (FaaS); a platform that can also
deliver requirements of the 5th generation mobile, i.e. 5G. In
this paper, we briefly explain architectural elements of mobile
networks that can materialize the FaaS platform, and discuss the
mobility management within the FaaS platform. Relying on these
architectural elements, we propose modelling the dynamics of
mobile network topology, including fixed base stations and mobile
users, as a self-regulatory network. Therefore, users’ mobility
is provisioned and traffic flow is moved to the next point of
attachment, i.e. the next base station, with no handover request
from the mobile device. Clearly, there is a trade-off between
keeping the abstract model up-to-date and the increased overhead
of the updates. Hence, we further examine the effect of such
out-of-date and insufficient information in the abstraction. The
investigations are carried out in network simulator (ns-3) and it
can be seen while reducing frequency of updates results in the
increased packet loss, an optimal balance between overhead and
packet loss can be achieved.