energy-aware node placement in wireless sensor networks global telecommunications conference 2004...
TRANSCRIPT
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Energy-aware Node Placement in Wireless Sensor Networks
Global Telecommunications Conference 2004 (Globecom 2004)
Peng Cheng, Chen-Nee Chuah Xin LiuUCDAVIS
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Outline Introduction Goal Sensor network placement
Communication Model MAX the Network lifetime Min Application-specific Cost
Minimization Evaluation Conclusion
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Introduction
The lifetime of a sensor network could be affected by many factors. Topology management Energy efficient MAC design Power-aware routing
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Goal
The optimal node placement strategies Maximize the network lifetime Minimize the application-specific total co
st A finite number of sensor nodes
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Sensor network placement Communication Model MAX the Network lifetime Min Application-specific Cost Minimiz
ation
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Communication Model
P = R * d r
R is a stream of data rate
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Communication Model
1 2 43
di : the distance of between nodes i and i+1
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Communication Model
(d1+d2+....+dn-1 )r >> d1r+d2
r+…+dn-1
r
Power consumption over a long link is much higher than the total power consumption over several short links.
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MAX the Network lifetime
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MAX the Network lifetime
C : The amount of data generated in a
unit area per unit time P2 = C * (d0+d1) * d2
r
1 2 43
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Min Application-specific Cost Minimization
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Evaluation
Performance bound
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Evaluation L = 10, D = 2, C = 1, r = 2, E0 = 1 R = 10, D = 2, C = 1, r = 2, E0 = 1
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Evaluation results
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Evaluation results
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Evaluation results
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Evaluation results – planar network
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Evaluation results – planar network
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Evaluation results – planar network
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Conclusion
Aggregation technique More general sensor network Non-uniform data density
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