Zigbee- The Future of Data Communications

ZIGBEE

THE FUTURE OF DATA COMMUNICATION

BYARKAPRAVA SADHU

ZIGBEE

ZigBee is a technological standard designed for control and sensor networks.

Based on the IEEE 802.15.4 Standard for WPAN.

Created by the ZigBee Alliance.

ZIGBEE ALLIANCE

and many more....

CHARACTERISTICS

Low Cost Low Power Consumption Low Data Rate High Transmission Range Scalability Reliability High Security Mesh Networking

TOPOLOGIES

ARCHITECTURE

Zigbee Alliance:oThe SoftwareoNetwork, Security & Application LayersoBrand Management

IEEE 802.15.4:oThe HardwareoPhysical & MAC Layers

ARCHITECTURE

PHYSICAL LAYER

PHY functionalities: Activation and deactivation of the radio

transceiver Energy Detection (ED) within the current channel Link Quality Indication (LQI) for received packets Clear Channel Assessment for CSMA-CA Channel frequency selection Data transmission and reception

OPERATING FREQUENCIES

ISM ( INDUSTRIAL SCIENTIFIC AND MEDICAL) 868 MHz European Band at 20kbps 915 MHz North American Band at 40kbps 2.4 GHz Global Band at 250kbps

Center Frequency(MHz)

Frequency Band (MHz)

No. of channels

Channel (k)

Bit Rate (kb/s)

868 868-868.8 1 0 20

915 902-928 10 1-10 40

2450 2400-2483.5 16 11-26 250

MAC LAYER

Device Classes Full function device (FFD)

Can talk to any device.

Reduced function device (RFD) Cannot talk to all the devices.

Address All devices must have 64 bit IEEE addresses Short (16 bit) addresses can be allocated to reduce

packet size

DEVICES

• Zigbee Coordinator (ZC):• it is the root of the network tree • acts as a bridge to other networks.

• Zigbee Router (ZR):• acts as an intermediate router.

• Zigbee End Devices (ZED):• functionality to talk to the parent node.• cannot relay data from other devices • allows the node to be asleep . 

MAC LAYER

Transmission Mode

Beacon enable mode Periodic data Repetitive low latency data using.

Non-Beacon enable mode Intermittent data using.

APPLICATION SUPPORT (APS)

APPLICATION FRAMEWORK

ZIGBEE DEVICE OBJECT (ZBO)

MESH NETWORKING

MESH NETWORKING

MESH NETWORKING

MESH NETWORKING

MESH NETWORKING

APPLICATIONS

PERSONAL HEALTH CARE

ZigBee LOW DATA-RATE RADIO DEVICES

HOME AUTOMATION

CONSUMER ELECTRONICS

PC & PERIPHERALS

TOYS & GAMES

INDUSTRIAL & COMMERCIAL

ZIGBEE AND BLUETOOTH

Feature(s) Bluetooth ZigBee

Power Profile days years

Complexity complex Simple

Nodes/Master 7 64000

Latency 10 seconds 30 ms – 1s

Range 10m 70m ~ 300m

Extendibility No Yes

Data Rate 1 Mbps 250 Kbps

Security 64bit, 128bit 128bit AES and Application Layer

802 WIRELESS SPACE

Data Rate (Mbps)

ZigBee802.15.4 802.15.3

802.15.3a802.15.3c

WPAN

WLAN

WMAN

WWAN

WiFi802.11

0.01 0.1 1 10 100 1000

Bluetooth802.15.1

IEEE 802.22

WiMaxIEEE 802.16

IEEE 802.20

THANK YOU