수중 탐사선단을 위한 TDMA 기반의 MAC 프로토콜

Abstract

The paper deals with a approach to underwater acoustic based Ad-hoc communication, which allows major design strategies for Media Access Control (MAC) within a group of the autonomous underwater vehicles(AUVs). The proposed MAC aims at deploying master centered star topology, which minimizes overhead of slave nodes and reduce the cost of configuring underwater acoustic ad-hoc networks consist of multiple AUVs. Furthermore, it has a BEACON packet for supervising network, a guard period between time slots for packet collision, time tag for estimation of propagation delay with a master node, the time synchronization of nodes, entering and leaving of network, and the communication method among nodes. Finally, the implemented MAC protocol improves energy-efficiency by letting nodes sleep. This scalable centralized protocol has the potential to serve as a primer for development of MAC protocol for future underwater acoustic based ad-hoc networks.