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Summary: Spring 2006 CS 649 1
CS649
Sensor Networks
Lecture 23: Transport Protocols II
Andreas Terzis
http://hinrg.cs.jhu.edu/wsn06/
Based on presentation by Bret Hull at Sensys 2004
Congestion is a problem in wireless
networks
Spring 2006 CS 649 2
· Difficult to provision bandwidth in wireless networks
· Unpredictable, time-varying channel
· Network size, density variable
· Diverse traffic patterns
· The result is congestion collapse
Outline
Spring 2006 CS 649 3
· Quantify the problem in a sensor network
testbed
· Examine techniques to detect and react to
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