Introduction to Sensor Networks. Introduction. A large number of low-cost, low-power, multifunctional, and small sensor nodes Sensor nodes consist of sensing data processing communicating components The position of sensor nodes need not be engineered or pre-determined.
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Each of these scattered sensor nodes has the capabilities to collect data and route data back to the sink
The sensor nodes are usually scattered in a sensor field
The sink may communicate with the task manager node via Internet or Satellite.
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Does the forwarding scheme guarantee reachability?
Fallback towards B1
Route from 3,2,1 to 1,2,3
BVR, 3200 nodes
Can achieve performance comparable to that using true positions
Beaconing overhead grows slowly with network size (less than 2% of nodes for larger networks)
Great benefit for deriving coordinates from connectivity, rather than positions