ZigBee Wireless Networks
What is ZigBee?
Several other Wireless Communication Technologies
Bluetooth
WiFi
NFC etc
Zigbee
Distance
up to 100 meters
Speed
Up to 250 kbps
Advantages
Low Cost
Low Power Consumption
Fields Where it is used
Home Automation
Transportation Management
Telecommunication Services
Health Care
Transportation Management
• Using RFID
• Reads the data attached to
the vehicle
• From ZigBee module data is
transmitted to
microcontroller
Mesh Networks
It can transmit data to longer distances
Information travels across the network from
point A to point B by hopping wirelessly from one
mesh node to the next.
The nodes automatically choose the
quickest and safest path in a process known as
Dynamic routing
Mesh networks are Self Healing
•
1.
•
Transport layer specification is not defined, it is
left to the Product vendor
Physical Layer
Modulation on outgoing signals and demodulation on
incoming signals
2. MAC Layer
Access the network by using (CSMA/CA)
It transmit beacon frames for synchronization
And provide reliable transmission.
3. Network Layer
Starting a network
Managing end devices joining or leaving a network
Neighbor discovery
Route discovery
Application Support Sub-layers(APS) Provide services to AO and ZDO
4. Application object (endpoint)
An application object defines input and output to the APS
A switch that controls a light is the input
output is the light bulb condition
5. ZigBee device object (ZDO)
A ZigBee device object performs control
and management of application objects.
Initializes the APS, network layer,
and security service provider
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