
146 Energy-Efficient Rate Adaptation
mean of beacon loss ratio after the alarm is K,andthesamplingintervalis
Δ, then the detection delay is
D =
h
K − a
× Δ.
From the above equation, one can see that the detection delay D is a de-
creasing function of K but an increasing function of h. Furthermore, with an
increase of the threshold h, the false alarm rate will become bigger; otherwise
the false alarm time will become smaller. In order to achieve continuous detec-
tion of intensity change, after detecting the abnormal change, the algorithm
needs to update a since the mean of beacon loss ratio is changed, and begins
sampling with i reset to 0.
In the presence ...