zigbee presentation
TRANSCRIPT
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ZIGBEEDone by,
Maathu Michael
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What is Zigbee?
• ZigBee is a new wireless technology • Technological Standard Created for
Control and Sensor Networks• Based on the IEEE 802.15.4 Standard• Created by the ZigBee Alliance• Philips,Motorola,Intel,HP are all members
of the allience.
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Zigbee• Designed for low power consumption
allowing batteries to essentially last for ever
• ZigBee makes possible completely networked homes where all devices are able to communicate and be controlled by a single unit
• It provides network,security and application support services operating on the top of IEEE
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IEEE 802.15.4 & ZigBee
– “the software” – Network, Security &
Application layers– Brand management
IEEE 802.15.4– “the hardware” – Physical & Media
Access Control layersPHY
868MHz / 915MHz / 2.4GHz
MAC
NetworkStar / Mesh / Cluster-Tree
Security32- / 64- / 128-bit encryption
ApplicationAPI
ZigBeeAlliance
IEEE 802.15.4
Customer
Silicon
Stack
App
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Architecture• Layered architecture• These layers facilitate the features that
make ZigBee very attractive: low cost easy implementation reliable data transfer short-range operations very low power consumption adequate security features
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Architecture
Layers1.Network and Application Support layer2.Physical (PHY) layer3.Media access control (MAC) layer
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Zigbee Device Types• There are three different ZigBee device
types that operate on the layers in any self-organizing application network
1. Zigbee Coordinator node2. Full Function Device (FFD)3. Reduced Function Device(RFD)
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1.Zigbee Coordinator Node• It is the root of network tree and a bridge
to other network• Able to store information about the
network• Only one ZCN for a network• It act as a repositary for other security
keys
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2.The full Function Device• An intermediatory router transmitting data
from other devices• Needs lesser memory than Zigbee
coordinator node• Lesser manufacturing cost• Can operate on all topologies• Also act as a coordinator
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3.The Reduced Function Device
• Device capable of talking in the network• It cannot relay data from other devices• Less memory• Cheaper than FFD• It talks only to the n/w coordinator
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Network Topologies1.Star Topology
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Network Topologies(cont…)2. Peer-to-Peer Topology
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ZigBee Mesh Networking
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ZigBee Mesh Networking
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ZigBee Mesh Networking
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ZigBee Mesh Networking
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ZigBee Mesh Networking
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Network Topologies(cont...)3.Cluster Network
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Characteristics
• Low power consumption with battery life ranging from months to years
• High density of nodes per network• Low cost• Simple implementation• Low data rate• Small packet devices
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Applications• The ZigBee Alliance targets applications
Across consumer, commercial, industrial and government markets worldwide
• Home networking• Industrial control and management
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Conclusion In future all devices and their controls will
be based on this standard.Since Wireless personal Area Networking applies not only to household devices, but also to individualised office automation applications, ZigBee is here to stay. It is more than likely the basis of future home-networking solutions………
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QUESTIONS????
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THANK YOU…….