Wireless Sensor Networks

A wireless sensor network consists of large Number Of Nodes.Large number of heterogeneous Sensor devices spread over a large field.They perform Wireless sensing and Data Networking. Group of sensors linked by wireless media to perform distributed sensing tasks
Each node has three components: sensing, processing, and communication. Networked sensors can continue to operate accurately in face of failure of individual sensors.Each sensor node operates autonomously with no central point of control in the network. E ....etc

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Evaluation of the Power Consumption of
Routing Protocols
for
Wireless Sensor Networks
# G. Santhosh
Kumar*
, Lino Abraham Varghese ,
Jose
Mathew
K
and
K.
Poulose
Jacob*
Department of Computer Science,
Cochin
University of Science
and
Technology
Cochin, Kerala, INDIA, *{san, kpj}@cusat.ac.in
Abstract
implosion problem experienced by Flooding
as
only
one copy
Sensor
networks
are one
ofthefastest growing
areas in
broad of
a
packet
is in transit
at
any
one
time.
In
GBR, each node in the network
can
look
at ....etc

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Impact of Node Mobility on Routing Protocols for Wireless Sensor Networks
G. Santhosh Kumar, M.V. Vinu Paul and K. Poulose Jacob
Abstract”
1
Wireless sensor networks monitor their
surrounding environment for the occurrence of some
anticipated phenomenon. Most of the research related to
sensor networks considers the static deployment of sensor
nodes. Mobility of sensor node can be considered as an
extra dimension of complexity, which poses interesting
and challenging problems. Node mobility is a very
important aspect in the des ....etc

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MAC Protocols for Sensor Networks



The characteristics of sensor networks

Tight constraints
Computation power
Storage
Primary functions
Sample the environment for sensory information
Propagate data back to the infrastructure
Traffic pattern
Little activity in lengthy period
Intensive traffic in short time
Highly correlated traffic
End to end flows are required to be fair

An adaptive rate control scheme

The metrics for evaluation of ....etc

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Presented By:
Adrian Perrig, Robert Szewczyk, J.D.
Tygar, Victor Wen, and David Culler
Department of Electrical Engineering &
Computer Sciences, University of California
Berkeley




Introduction

Wireless sensor networks are increasingly
prevalent (or at least that was the prevailing thought in 2002)
 Sensors are very resource-limited
(SmartDust)
– Slow communication links (10 kbps)
– Limited computing power (8-bit, 4 MHz)
– Limited memory and storage (512 bytes)
– Limited batter ....etc

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