Zigbee is a wireless networking standard that uses low power digital radio signals to connect devices together wirelessly. It operates in the 2.4GHz, 915MHz, and 868MHz frequency bands. Zigbee networks can include full-function devices, reduced-function devices, and coordinators that route data. Devices communicate using the CSMA-CA channel access method to check for clear channels before transmitting data. Zigbee provides low power consumption, low data rates, and high security making it suitable for applications like home automation and sensor networks.

1. Zigbee Technolgy
By
Anirudh
2210413832

2. What is Zigbee?
• ZigBee is a standard that defines a set of communication protocols for low
data-rate,short-range wireless networking
• It has adopted IEEE 802.15.4 standards
• It operates in 3 frequencies (2.4 Ghz , 915Mhz , 868Mhz)

3. Zigbee characteristics
• Low cost
• Low power consumption
• Low data rate
• Short range
• Reliability
• High security
• Easy implementation & protocols

4. • Full – function devices
• Reduced - funtion devices
Types of devices
Device roles
• Coordinator
• Router
• End device

5. Networking topologies

6. Networking layers

7. Communication
• It uses single frequency at a time
• It implements simple channel access mechanism
CSMA-CA
CSMA-CA
Checks for channel clear and transmits data.
Channel clear
Energy detection method
Carrier sense method

8. Data transfer
• DT to coordinator from device
• DT to device from coordinator
• DT between two peers

9. General characteristics
• Data verification(16-bit Frame Check Sequence (FCS))
• Addressing
• Association and dissociation
• Binding
• Self healing and self forming

10. PHY Packet format

11. MAC layer
Generating beacons (if the device is a coordinator)
● Synchronizing the device to the beacons (in a
beacon-enabled network)
● Employing the CSMA-CA for channel access
● Managing GTS channel access
● Providing a reliable link between two peer MAC
entities (two different devices)
● Providing PAN association and disassociation
services
● Providing support for security; the MAC layer is
responsible for its own security
processing, but the upper layers determine which
security level to use

12. Mac packet formats

13. Nwk layer
• Configuring a new device. For example, a new device can be configured to
begin
• its operation as a ZigBee coordinator or try to join an existing network.
• Starting a new network.

14. Modes of operation
• Ideal mode
• Transmit mode
• Receive mode
• Command mode
• Sleep mode

15. • Thank you