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Erschienen in:
2012 | OriginalPaper | Buchkapitel
On Barrier Resilience of Sensor Networks
verfasst von : Kuan-Chieh Robert Tseng, David Kirkpatrick
Erschienen in: Algorithms for Sensor Systems
Verlag: Springer Berlin Heidelberg
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Various notions of coverage have been introduced as basic quality-of-service measures for wireless sensor networks. One natural measure of coverage is referred to as
resilience
: given a starting region
S
and a target region
T
, the resilience a sensor configuration with respect to
S
and
T
is the minimum number of sensors that need to be deactivated before an
S
−
T
path can exist that does not cross any active sensor region. We demonstrate that determining resilience of a network of unit-line-segment sensors is NP-hard. Furthermore, we can extend our proof to show that the resilience problem remains NP-hard for other types of non-symmetric sensor coverage regions.