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WIRELESS INTEGRATED NETWORK SENSORS

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PHYSICAL PRINCIPLES

PROPAGATION LAWS FOR SENSING
(Free space & other media)
DETECTION & ESTIMATION:
(Camer- Rao theory)
USE OF PRACTICAL ALGOS:
Deconvolution
Target separation
COMMUNICATION CONSTRAINTS:
Spatial separation
Multipath path propagation

WINS Network Architecture

Characteristics
Support large numbers of sensor
Low average bit rate communication ( < 1-100 Kbps )
Dense sensor distributions
Exploit the short-distance separation multihop communication

Time-division protocol

Exchange small messages: performance information, synchronization,
bandwidth reservation requests
Abundant bandwidth few conflicts, simple mechanisms
At least one low-power protocol suite has been developed  feasible to achieve distributed low-power operation in a flat multihop network

Why WINS ?

Low power consumption ( 100 μW average )
Separation of real-time from higher level functions
Hierarchical signal-processing architecture
Application specific
Communication facility ( WINS gateways )
Remote user
Scalable
Reduce amount of data to be send  scalability to thousands of nodes per gateway