S
ECURITY AND
R
ELIABILITY
I
MPROVEMENT
T
ECHNIQUES
The flow chart of home-to-community-center
data communication is shown in Fig. 2. The
blocks of filtering and unreliable node detection,
and the use of 3G networks are the main tech-
niques for improving security and reliability.
Below we introduce the most recent solution
techniques. A review of other possible solutions
can be found in [8, 9].
Filtering False Network Traffic
— It is impos-
sible to detect within the community false pri-
vate data due to their intrinsic non-public nature.
Detection is possible only after a response is
triggered as the response normally involves
human intervention and/or cross-verification by
authorized parties. Henceforth, we focus on how
to filter false public data. Public data concern
the interests of the community. They are fused
and processed at the community center. By
checking data consistency, the community center
is able to detect false public data and remove
them from consideration.