• George Kadas
This work contains a study to assess the
impact of network-related parameters to
the reliability of a user’s localisation when
the user’s location can potentially change.
User parameters such as speed and net-
work parameters such as network delay,
noise, localisation interface, etc. are tested
in regard to the impact they have on the
performance of service selection based on
location estimation.
A generic context simulator, Siafu, was
used to simulate the context generated by
users based on a predefined behavioural
pattern. Thereafter the functionalities of
the aforementioned simulator were extrap-
olated to provide the basis as to enable op-
erations on the provided information.
From the extracted results, for the first
scenario a 2.6 times increase to the max-
imum mismatch probability is observed
when the maximum delay is increased 9-
fold. For the second examined scenario,
it was seen that both low accuracy and
high lock time for a localisation interface
are triggers for high mismatch probability
for a moving user. The GPS and cellular
interfaces exhibited the highest mismatch
probabilities (over 70 % in the ideal case).
Since this number is thought to be high
for a best case, the role of service density
remains to be investigated.
Udgivelsesdato4 jun. 2014
Antal sider73
ID: 198540097