The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Underwater acoustic communication, compared with Wireless Sensor Networks (WSNs) used in terrestrial environment, poses unique challenges due to the harsh underwater environment, such as limited bandwidth capacity, high and variable propagation delays, high bit error rates, and temporary losses connectivity caused by multipath and fading phenomena in spite of using a variety of applications in many...
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...
Recently, there has been a growing interest in monitoring aqueous environments using Underwater Acoustic Sensor Networks (UASNs). In these networks, the Medium Access Control (MAC) protocols are responsible for coordinating the access from active nodes into the acoustic channel, which is characterized by high propagation delay and low data rate, which is challenging for system synchronization, energy...
Recently, development of original technologies of underwater sensor network for data transmission in underwater environment has been progressed. Since propagation delay is a problem awaiting solution in acoustic communication, the transmission time tends to be increased as network radius increases. Besides, there are difficulties of MAC service, which supports to avoid the collision and maintain reliable...
A medium access control (MAC) protocol permits the nodes to access the shared medium by providing contention resolution mechanism. The design of MAC protocol in ad hoc networks becomes a more challenging task due to the interruptible energy source or limited battery life of nodes. This brings energy efficiency as the preliminary goal of the MAC protocol. MAC protocol for underwater acoustic sensor...
UnderWater Acoustic Sensor Networks (UW-ASNs) consist of sensors and Autonomous Underwater Vehicles (AUVs) performing collaborative monitoring tasks. In this article, UWMAC, a distributed Medium Access Control (MAC) protocol designed for UW-ASNs, is introduced. The proposed MAC protocol is a transmitter-based Code Division Multiple Access (CDMA) scheme that incorporates a novel closed-loop distributed...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.