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Definition – Ad Hoc Network • Ad hoc is a Latin phrase which means "for this [purpose]" • The purpose is to interconnect computational nodes for information exchange i f ti h • I t Interconnection is being realized d ti i b i li d decentralized, without t li d ith t pre-existing infrastructure, . routers, access points • Nodes participate in routing of packets, deciding dynamically, dynamically based on connectivity to neighbour nodes nodes. 11 12 .Definition – Sensor Network • Sensor from the Latin word sentire which means “to feel” or “to perceive” • A Sensor measures a physical quantity and. | CEORG-AUCUST-UNIVERSITĂT GOTTINGEN TELEMATICS CROUP Wireless Ad Hoc Sensor Networks - Introduction - TELEMATICS CROUP ws 2010 2011 Prof. Dr. Dieter Hogrefe Dr. Omar Alfandi CEORG-AUCUST-UNIVERSITĂT GOTTINGEN Terms of Lecture Weekly lecture 2 sws 5 Credits Problem Sheets self solution Written Exam 90 minutes at end of semester Target audience Al BSc 5 sem. Al MSc 1 sem. IT IS MSc 1 sem. Audio video recording of the lecture after the lecture 3 GEORG-AUG UST-UNIVERSITĂT GOTTINGEN Outline TELEMATICS CROUP Terms of Lecture Lecture Overview History Definition Applications Repetition - Physical Layer Issues Summary 2 TELEMATICS GEORG-AUGUST-UNIVERSITÃT GROUP GOTTINGEN Terms of Lecture Learning Goals - Understanding application critical evaluation of wireless Ad Hoc Sensor network principles Basics Issues Current solutions Open research questions What we expect - Be prepared for each lecture . read announced chapter text book and lecture slides published as soon as possible - Autonomously solve problem sheets feel free to ask questions office hours email 4 GEORG-AUGUST-UNIVERSITĂT GOTTINGEN TELEMATICS GROUP Terms of Lecture Literature - Ad Hoc Wireless Networks Architectures and Protocols c. Murthy B. Manoj Prentice Hall 2004 ISBN 013147023X First is the basic text book used for the lecture structure - Protocols and Architectures for Wireless Sensor Networks H. Karl 2005 Wiley Sons ISBN 0470095102 Second is also used for Sensor Networks - Further Literature and papers will be announced in lecture slides. TELEMATICS GROUP GEORG-AUGUST-UNIVERSITĂT GOTTINGEN Lecture Overview - OSI Reference Model Application Transport Protocol Network Protocol Media Access Protocol Physical Channel Radio A layer is a collection of conceptually similar functions that provide services to the layer above it and receives service from the layer below it Conceptually two instances at one layer are connected by a horizontal protocol connection on that layer TELEMATICS .

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