Information Technology Reference
In-Depth Information
packet loss
p
, we can inspect the effects to the average role specification certificate
transmission by degree. Fig. 1 shows the difference of the role-grouped case
(grouped-pd.dat) and the role-ungrouped case (ungrouped-pd.dat). When the packet
loss is small, the difference is very small. However, as the packet loss gets bigger, the
role-ungrouped case suffers from steeply increasing packet transmission. The per-
formance enhancement obtained by role grouping is proportional to
d
. For the follow-
ing comparison, we set
d
to 50 for the performance analysis.
Fig. 1.
A comparison of the expected packet transmission as a function of
p
and
d
We examine the average packet transmission,
E
[
F
(
l
)], for the various values of
threshold
m
. In Fig. 2, the
E
[
F
(
l
)] becomes stable when
m
becomes greater than 10.
Let's calculate the impact of
p
on
E
[
F
(
l
)] when
m
=20 for two cases; one is when roles
Fig. 2.
A comparison of the expected packet transmission as a function of
p
and
m
