UNDERSTANDING AND EXPLOITING THE ACOUSTIC PROPAGATION DELAY IN UNDERWATER SENSOR NETWORKS by Affan
نویسندگان
چکیده
xiv Chapter 1: Introduction 1 1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2.1 Communication Medium for UWSN . . . . . . . . . . . . . . . 3 1.2.2 The Vision of UWSN . . . . . . . . . . . . . . . . . . . . . . . 4 1.2.3 Acoustic Propagation and Sensornet Protocols . . . . . . . . . 6 1.3 Thesis Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.3.1 Summary of Work . . . . . . . . . . . . . . . . . . . . . . . . 7 1.4 Contribution and Novelty . . . . . . . . . . . . . . . . . . . . . . . . . 10 Chapter 2: Related Work 12 2.1 Underwater Acoustic Communication . . . . . . . . . . . . . . . . . . 12 2.1.1 Underwater Acoustic Channel . . . . . . . . . . . . . . . . . . 12 2.1.2 Multipath in UWA Communication . . . . . . . . . . . . . . . 14 2.2 Time Synchronization in Computer Networks . . . . . . . . . . . . . . 17 2.2.1 Wide-Area-Network Time Synchronization . . . . . . . . . . . 18 2.2.2 Time Synchronization in SensorNets . . . . . . . . . . . . . . . 19 2.3 Shared Medium Access . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2.3.1 Terrestrial RF-based MACs . . . . . . . . . . . . . . . . . . . 21 2.3.2 Satellite MACs . . . . . . . . . . . . . . . . . . . . . . . . . . 23 2.3.3 Underwater Acoustic MACs . . . . . . . . . . . . . . . . . . . 24 Chapter 3: Space-Time Uncertainty 27 3.1 Space-time Uncertainty and the ALOHA Protocol . . . . . . . . . . . . 29
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