Evaluating selective ARQ and slotted handshake based access in real world underwater networks

Authors:
Haining Mo;Lina Pu;Yibo Zhu;Zheng Peng;Zaihan Jiang;Jun-Hong Cui
Affiliations:
Computer Science and Engineering Department, University of Connecticut, Storrs, CT;Computer Science and Engineering Department, University of Connecticut, Storrs, CT;Computer Science and Engineering Department, University of Connecticut, Storrs, CT;Computer Science and Engineering Department, University of Connecticut, Storrs, CT;Acoustic Division, U.S. Naval Research Lab., Washington DC;Computer Science and Engineering Department, University of Connecticut, Storrs, CT
Venue:
WASA'13 Proceedings of the 8th international conference on Wireless Algorithms, Systems, and Applications
Year:
2013

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Abstract

Medium Access Control (MAC) is an essential component of protocol stacks in Underwater Acoustic Networks (UANs). Numerous dedicated UAN MAC protocols have been proposed and studied via analysis and simulations. However, limited work has been done on evaluating these protocols in real ocean environments. To achieve a better understanding on how MAC protocols perform in real world UANs, we implemented Selective ARQ and Slotted Handshake based Access (SASHA) on UAN nodes. SASHA embraces some most essential and representative techniques in UAN MAC design, including selective ARQ, time slotting, handshake and collision avoidance. Moreover, a sea test was conducted at Atlantic Ocean to evaluate the performance of SASHA. With the experimental data, we are able to study how the aforementioned techniques affect the performance of SASHA. we also analyze the hop-by-hop and end-to-end behavior of SASHA. Specifically, we investigate the transmission delay and queuing delay of a data packet on one hop. From the findings, some issues are discovered and the corresponding design guidelines are emerged.