Net-centric warfare requires widespread, highly reliable communications even in the face of adversarial influences.
Maintaining connectivity and secure communications among network entities are vital properties towards mission
readiness and execution. In this work, we examine required communications range of nodes in a wireless sensor
network. Several parameters of wireless networks are studied in terms of how they influence overall network
connectivity such as key predistribution schemes and node compromise attacks. In many battlespace situations
for networks of unmanned ground sensor nodes, communication range is limited by resources, hardware ability
and unpredictable terrain. Additionally, networks attempt to minimize the transmission power of each node to
conserve power, as the radio is oftentimes the largest drain on available energy resources. Furthermore, such
networks are vulnerable to physical node compromise and attack by an adversary and destroy connectivity in
these situations. What is studied here is overall network connectivity and its relationship to key predistribution
schemes and node compromise attacks. In networking situations with an adversarial presence, it may be possible
to continue to mission objectives properly with the remaining uncompromised network resources with some
reconfiguring of network parameters. We derive a single expression to determine required communication radius
for wireless sensor networks to include these situations.
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