zigbee.pptx

zigbee.pptx

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  1 The Web Sensor GatewayArchitecture for ZIGBEE Milan Ganesh [1JS07EC054]
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   ZigBee isthe set of specs built around the IEEE 802.15.4 wireless protocol  Intended for 2.45 Ghz , 868 Mhz and 915 Mhz Band.  Low in cost ,complexity & power consumption as compared to competing technologies.  Intended to network inexpensive devices .  Data rates touch 250Kbps for 2.45Ghz ,40 Kbps 915Mhz and 20Kbps for 868Mhz band. 2
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   Standard ina fragmented market Many proprietary solutions, interoperability issues  Simple protocol, Global Implementation 2.4GHz  Low Power consumption 6 months to more than 5 years battery life for most applications  Low Cost  High density of nodes per network 250 nodes per network, multiple co-located networks  Data rate requirements Few bits to 250kbps sufficient
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  November 9, 20224
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  868MHz / 915MHz PHY 2.4 GHz 868.3MHz Channel 0 Channels 1-10 Channels 11-26 2.4835 GHz 928 MHz 902 MHz 5 MHz 2 MHz 2.4GHz PHY ISM Worldwide 250 kbps 16 2.4 GHz ISM Europe 20 kbps 1 868 MHz ISM America 40 kbps 10 915 MHz BAND COVERAGE DATA RATE # OF CHANNEL(S)
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  Bluetooth ZigBee AIR INTERFACEFHSS DSSS PROTOCOL STACK 250KB 28KB BATTERY rechargeable non-rechargeable DEVICES/NETWORK 8 2^16 LINK RATE 1Mbps 250 kbps RANGE ~10 meters ~30 meters w/o power amp w/o power amp
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  Participants Promoters www.zigbee.org
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   Gateway :Network point that acts as an entrance to another network.  Basic functionalities : a) query-distribution b) data-aggregation c) message-conversion  Internet provides flexibility and convenience of access 9
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   Configure IPapproach  Internet over WSN approach  WSN over Internet approach 10
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   Connecting HeterogeneousNetworks  Web-Sensor Gateway Architecture  Control and Data Exchange Process 11
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  12 Connecting Heterogeneous Networks
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  Gateway consists ofthree parts:  Zigbee/IEEE802.15.4 protocol stack  Embedded TCP/IP protocol stack  gateway translation layer 13
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   Initialize embeddedweb-server  Client creates socket and initializes  Establish connection  Three way Handshake  Send request  Request_to_Send  Retrieve result  Response_to_Request  Connection termination 15
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   Setting eventflags  Event polling 17
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   Node Modelin OPNET  Process Model in OPNET 19 Two Models for Gateway
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   Set ofinterconnected modules  Gateway translation layer module ◦ Connects web-server application layer and zigbee AP application layer ◦ Interface between wired network and wireless network 20
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  November 9, 2022 NarayanaSwamy 21
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   The packettranslation process details are described further in a process model.  In OPNET, the process domain defines the logic flow and behavior for programmable module, 22
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  23 init test extract_ip extract_zb PACKET_IS_IPV4 PACKET_IS_ZIGBEE encap_to_zb encap_to_ip PACKET_IS_IPV4 PACKET_IS_ZIGBEE idle default State TransitionDiagram
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  PERSONAL HEALTH CARE HOME AUTOMATION CONSUMER ELECTRONICS TV VCR DVD/CD Remote control security HVAC lighting closures PC& PERIPHERALS consoles portables educational TOYS & GAMES INDUSTRIAL & COMMERCIAL monitors sensors automation control mouse keyboard joystick monitors diagnostics sensors
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