Jagannathan Sarangapani (Author of Wireless Ad hoc and Sensor Networks)
Ad-hoc and Sensor Networks
In R13 and R15,8-units of R09 syllabus are. Introduction to Ad Hoe Wireless Networks. Topology based routing protocols. Position based routing. Other Routing Protocols. Sensing and Communication Range.
Wireless Sensor Networks,Computer science. complete information about sensor networks taught by nit professors detailed info about wireless networks which can be usefull for reference. VTU 8TH SEM CSE ADHOC NETWORKS NOTES 10CS
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Wireless Ad hoc sensor networks are characterized by several constraints, such as bandwidth , delay , power , etc. These networks are examined by constructing a tree network. A core node usually chosen to be the median or center of the multicast tree network with a tend to minimize a performance metric, such as delay or bandwidth. In this paper, we present new efficient strategy for constructing and maintaining a core node in multicast tree for wireless ad hoc sensor networks that undergo dynamic changes based on local information. The new core centdian function is defined by convex combination that signifies total bandwidth and delay constraints. We also show a O n log n time solution for finding centdian in the Euclidian complete network using interesting observations.
MANET stands for Mobile adhoc Network also called as wireless adhoc network or adhoc wireless network that usually has a routable networking environment on top of a Link Layer ad hoc network.. They consist of set of mobile nodes connected wirelessly in a self configured, self healing network without having a fixed infrastructure. MANET nodes are free to move randomly as the network topology changes frequently. Each node behave as a router as they forward traffic to other specified node in the network. MANET may operate as standalone fashion or they can be the part of larger internet. They form highly dynamic autonomous topology with the presence of one or multiple different transceivers between nodes. The main challenge for the MANET is to equipped each devices to continuously maintain the information required to properly route traffic.
Thousands of mini computers in size comparable to a chewing gum , equipped with sensors, are deployed in some terrain. After activation the sensors form a self-organized network and provide data, for example about a forthcoming earthquake. The trend towards wireless communication affects more and more electronic devices in almost every sphere of life. Conventional networks rely on base stations, and the mobile devices exchange the data in a star-like fashion. In contrast, current research is mainly focused on networks that are completely unstructured, but are nevertheless able to communicate via several hops , despite the low coverage of their antennas. Such systems are called sensor, ad hoc, or mesh networks, depending on the point of view and the application.