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Stochastic Medium Access Control for Underwater Acoustic Sensor Networks
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 2016 |
| Abstract | of the Dissertation Stochastic Medium Access Control for Underwater Acoustic Sensor Networks by Yu Han Doctor of Philosophy in Computer Engineering Northeastern University, June 2016 Dr. Yunsi Fei, Advisor Underwater sensor networks (UWSNs), the enabling technology for a broad range of aquatic applications, rely on acoustic communication for long-range transmissions. However, underwater acoustic communication suffers from several adverse features, such as long propagation delay and low bandwidth, making the networking design for UWSNs much more challenging than their terrestrial counterparts. Medium access control (MAC), a crucial component in networking design, coordinates among multiple agents that share the same channel resource and is responsible to schedule packet transmissions efficiently and fairly. However, due to the long propagation delay, the traditional handshaking-based random-access MAC protocols are not channel efficient for UWSNs. In this dissertation, we address the inefficiency issues in random-access MAC for UWSNs, using a stochastic sending probability-based approach. We propose three handshaking-free underwater MAC solutions targeting the same goal: high network throughput, low packet end-to-end delay, and robustness under dynamics and controlled implementation complexity. The three solutions are based on a common utility-based probability optimization framework, but with different design considerations and objective functions. We first leverage the feature of long propagation delay, often taken as negative, to improve the parallelism between multiple senders. Our proposed protocol, the Delay-Aware Probability-based underwater MAC protocol (DAP-MAC), characterizes the group compatibility relation, a proposed indicator for successful concurrent transmissions, and utilizes this relation in the stochastic optimization framework for the best transmission strategy. The drawback of DAP-MAC is it requires long time slots to accommodate concurrent transmissions. We reduce the slot size and explicitly resolve the unique spatial-temporal uncertainty issue in UWSNs in our proposed protocol, the Traffic-Adaptive Receiver-Synchronized underwater MAC protocol (TARS). In TARS, we consider the data queue status and design the throughput-optimal transmission strategy |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://repository.library.northeastern.edu/files/neu:cj82nd808/fulltext.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
