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MODULES FOR TEACHING WIRELESS SENSOR NETWORKS > Return to List of Modules MODULE 5: Wireless Link Estimation Assignment Questions Created: 10-15-2007 Last updated: 10-16-2009 1. What is the basic idea of the four-bit link estimation in wireless sensor networks? 2. Why do we need wireless link estimation? 3. What are the disadvantages if we only use physical layer estimation, data link layer estimation, and network layer estimation, respectively? 4. Please give one example to illustrate why sometimes hop-count is not a good metric in WSN data forwarding.

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