Shallow Water Acoustic Networking [Algorithms

Acoustic networks of autonomous underwater vehicles (AUVs) cannot typically rely on protocols intended for terrestrial radio networks. This work describes a new location-aware source routing (LASR) protocol shown to provide superior network performance over two commonly used network protocols2014;flooding and dynamic source routing (DSR)2014;in simulation studies of underwater acoustic networks of AUVs. LASR shares some features with DSR but also includes an improved link/route metric and a node tracking system. LASR also replaces DSR's shortest-path routing with the expected transmission count (ETX) metric. This allows LASR to make more informed routing decisions, which greatly increases performance compared to DSR. Provision for a node tracking system is another novel addition: using the time-division multiple access (TDMA) feature of the simulated acoustic modem, LASR includes a tracking system that predicts node locations, so that LASR can proactively respond to topology changes. LASR delivers 2-3 times as many messages as flooding in 72% of the simulated missions and delivers 22013;4 times as many messages as DSR in 100% of the missions. In 67% of the simulated missions, LASR delivers messages requiring multiple hops to cross the network with 22013;5 times greater reliability than flooding or DSR

Intersection RSU in Vanet

Vanet is most important and new type adhoc networking which needs attention If research of scholars and technology of automobile industry combinely work in this area they can reduces accidents happening on roads Basically Vanet is Adhoc network in which vehicles are treated as Node And these nodes are communicating with each other as well as rsu Road side unit s on the road In This paper we shortly studied real time examples of vanet There is huge no of accidents happens at the intersectio