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Underwater acoustic communication (UWAC) is often the only viable solution to establish an ad hoc underwater communication network. The specific features of UWAC, arising from the physics of underwater acoustics, make the design of resource-efficient media access control (MAC) protocols important as well as challenging. In this paper, we tackle this task considering ad hoc UWAC networks that support...
Briefly introduced the status of MAC protocol for underwater acoustic communication, By improving the existing TopDisc algorithms, described the network topology needed by this paper and Proposed a suitable MAC layer protocol F-MAC for underwater communication. This protocol doesn't require synchronization and use the wasted time caused by RTS/CTS's handshake. The Simulation results show that, this...
The most widely used medium access control (MAC) scheme for underwater acoustic communication (UWAC) networks is conventional time-division multiple access (TDMA), in which only a single node transmits at each time. Since this TDMA is the bottleneck in high traffic networks, in this paper we present a new MAC protocol for UWAC ad-hoc networks that applies spatial reuse to improve network throughput...
Underwater acoustic communication networking is an innovative area, which faces difficult medium problems, such as long propagation time and dynamic network topology. Our challenge is to develop a MAC protocol which provides a stable and efficient underwater acoustic network for a system with high message rate. In previous work, a TDMA based algorithm was implemented and tested in various sea trials...
Swarms of underwater autonomous vehicles (UAVs) are being increasingly used in civilian and military applications. Formations of UAVs are being utilized to detect mine-like objects and oilfields, collect water quality information, detect intruders, and in navigation assistance applications, among others. This paper introduces a new data link layer for underwater communications suitable for non-synchronized...
In underwater networks, when designing contention-based MAC protocols such as CSMA/CA, a long propagation delay should be considered. Particularly, most protocols like 802.11, the most typical CSMA/CA protocol, which utilize the RTS/CTS handshaking technique with network allocation vector (NAV), determine the NAV using a value of duration field in RTS/CTS. The duration value is determined with a fixed...
The MAC protocol is one of the most concerned issued for Underwater Acoustic Sensor Networks (UWASNs). Distinguishing with the radio frequency (RF) communication for the terrestrial wireless sensor networks, the peculiarity of acoustic communication in underwater environment causes many issues of energy consumption, propagation delay, time synchronization and other factors when designing the sensor...
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