SLAM: Sleep-Wake Aware Local Monitoring in Sensor Networks
Author
Issa Khalil, Saurabh Bagchi, Ness B. Shroff
Abstract
Sleep-wake protocols are critical in sensor networks to
ensure long-lived operation. However, an open problem is
how to develop efficient mechanisms that can be
incorporated with sleep-wake protocols to ensure both longlived
operation and a high degree of security. Our
contribution in this paper is to address this problem by using
local monitoring, a powerful technique for detecting and
mitigating control and data attacks in sensor networks. In
local monitoring, each node oversees part of the traffic going
in and out of its neighbors to determine if the behavior is
suspicious, such as, unusually long delay in forwarding a
packet. Here, we present a protocol called SLAM to make
local monitoring parsimonious in its energy consumption
and to integrate it with any extant sleep-wake protocol in the
network. The challenge is to enable sleep-wake in a secure
manner even in the face of nodes that may be adversarial and
not wake up nodes responsible for monitoring its traffic. We
prove analytically that the security coverage is not weakened
by the protocol. We perform simulations in ns-2 to
demonstrate that the performance of local monitoring is
practically unchanged while listening energy saving of 30 to
129 times is achieved, depending on the network load.
Editor
IEEE Symposium on Dependable Systems and Networks (DSN)
Publisher
IEEE Symposium on Dependable Systems and Networks (DSN)
School
Electrical and Computer Engineering
Affiliation
Purdue University
Publication Date
2007-06-25
Keywords
Sensor networks, local monitoring, sleep/wake