FDCA: A Full-Duplex Collision Avoidance MAC Protocol for Underwater Acoustic Networks

PROJECT TITLE :

FDCA: A Full-Duplex Collision Avoidance MAC Protocol for Underwater Acoustic Networks

ABSTRACT:

Unlike terrestrial radio frequency Communication, acoustic waves are major Communication means in underwater networks. Unfortunately, acoustic waves incur long propagation delays that must be considered within the media access control (MAC) design to attain a high throughput. Another major reason for low throughput is that just about all the acoustic modems operate below half-duplex mode. For increasing Communication throughput, many full-duplex acoustic modems are proposed. However, most current MAC protocols are designed for [*fr1]-duplex modems that are not suited for full-duplex modems. Toward a correct approach, this paper models and analyzes the impact of full-duplex modem characteristics on the Aloha protocol. We have a tendency to propose a full-duplex collision avoidance (FDCA) MAC protocol for underwater acoustic networks. It is a handshaking primarily based protocol that designed for full-duplex modems to maximise network throughput. Collision avoidance schedule algorithm avoids the collisions at each the receiver and also the sender by passively acquired native data (neighboring nodes’ propagation delay and expected transmission schedules). Moreover, to address the channel’s long propagation delay, it launches multiple simultaneous handshaking processes with neighbors to concurrently propagate multiple packets in the underwater channel. Our in depth simulation results have confirmed that the FDCA protocol outperforms the prevailing full-duplex MAC protocols in representative long propagation delay eventualities.

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