PRESENTED BY:
Milan Ganesh

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What is ZIGBEE?
 ZigBee is the 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.
 The need for ZigBee
 Standard in a 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
 802 wireless space
Frequencies and Data Rates
 ZigBee/Bluetooth Comparison
 Zigbee Protocol Stack
 Internet – Zigbee gateway
 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
 Implementing web-sensor gateway
 Configure IP approach
 Internet over WSN approach
 WSN over Internet approach
 The Proposed Web-Sensor gateway
 Connecting Heterogeneous Networks
 Web-Sensor Gateway Architecture
 Control and Data Exchange Process
Zigbee networks and Internet Communication System
Gateway consists of three parts:
 Zigbee/IEEE802.15.4 protocol stack
 Embedded TCP/IP protocol stack
 gateway translation layer
 Web-sensor gateway protocol architecture
 Control and Data Exchange
 Initialize embedded web-server
 Client creates socket and initializes
 Establish connection
Three way Handshake
 Send request
Request_to_Send
 Retrieve result
Response_to_Request
 Connection termination
 Control and data transfer
Main events
 Setting event flags
 Event polling
 General APS Frame Format
OPNET Simulation Model
 Node Model in OPNET
 Process Model in OPNET
 Node model in OPNET
 Set of interconnected modules
 Gateway translation layer module
 Connects web-server application layer and zigbee AP application layer
 Interface between wired network and wireless network
Process model in OPNET
 The packet translation process details are described further in a process model.
 In OPNET, the process domain defines the logic flow and behavior for programmable module,