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(1)

Drahtlose Kommunikation

Infrastrukturlose Netze

(2)

Übersicht

Untersuchte Netzstruktur und Problemstellungen

 Topologie-basierte Routingprotokolle

 Geographische Routingprotokolle

(3)

Large Scale Wireless Networks

 On board powered devices

 Wireless communication

 No network infrastructure

(4)

Large Scale Wireless Networks

Example: sensor networks

(5)

Large Scale Wireless Networks

Example: ad hoc networks

(6)

Large Scale Wireless Networks

Example: robotic networks

(7)

Large Scale Wireless Networks

 Limited comm. range

 Regulatory constraints

 Implied network graph

(8)

Large Scale Wireless Networks

Data communication:

unicast, multicast, broadcast, anycast,

(9)

Large Scale Wireless Networks

Topology control:

neighbor elimination, backbone con- struction, virtual overlays, relocation,…

(10)

Localized and Non-Localized Protocol Design

Localized: achieve a network wide objective with local decisions only Request neighbors

?

(11)

Localized and Non-Localized Protocol Design

Localized: achieve a network wide objective with local decisions only Non-localized: Local change may require a network wide decision

Inform network

General hope that localized protocols:

save resources,

support arbitrary network scale, deal better with dynamics,

still work when full network view is not possible

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