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CS 117 Lec 1A (cont) ad hoc

CS 117 Lec 1A (cont) ad hoc - Ad Hoc Networks Lecture 1B CS...

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Ad Hoc Networks Lecture 1B CS 117 Spring 2009 Mario Gerla Computer Science Dept UCLA
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Infrastructure vs Ad Hoc Infrastructure Network (cellular or Hot spot) Ad Hoc, Multihop wireless Network
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General Ad Hoc Network Characteristics Instantly deployable (no fixed infrastructure) Satisfies a “temporary” need Node mobility, relocation Limited battery power Multi-hopping ( to save power, overcome obstacles, enhance spatial spectrum reuse, etc.)
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Ad Hoc Network Applications Military Automated battlefield Civilian Homeland defense Disaster Recovery (flood, fire, earthquakes etc) Law enforcement (crowd control) Search and rescue in remote areas Environment monitoring (sensors) Space/planet exploration
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Ad Hoc network implementations Ad hoc nets can be implemented with different radio and MAC technologies: Most common is 802.11 “ad hoc mode” Bluetooth Zigbee 802.15.4 trees and meshes Even UWB (Ultra Wide Band) radios…
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On-Demand Routing On demand routing unique of ad hoc nets Routes are established “on demand” as
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