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