Wireless Protocols for IoT : Zigbee
, Overview
1. Zigbee Features, Versions, Device Types, Topologies
2. Zigbee Protocol Architecture
3. Zigbee Application, Zigbee Application Support Layer
4. Network Layer, Routing: AODV, DSR
5. Zigbee Smart Energy V2
Note: Bluetooth, IEEE 802.15.4 were covered in the previous
lectures..
, Zigbee Overview
Industrial monitoring and control applications requiring small
amounts of data, turned off most of the time (<1% duty cycle),
e.g., wireless light switches, meter reading, patient monitoring
First standard was published in 2004
Ultra-low power, low-data rate, multi-year battery life
Power management to ensure low power consumption.
Less Complex. 32kB protocol stack vs 250kB for Bluetooth
Range: 1 to 100 m, up to 65000 nodes.
Tri-Band:
16 Channels at 250 kbps in 2.4GHz ISM
10 Channels at 40 kb/s in 915 MHz ISM band (USA)
One Channel at 20 kb/s in European 868 MHz band
920 MHz in Japan
, Zigbee Overview (Cont)
IEEE 802.15.4 MAC and PHY
(Except for Zigbee Smart Energy 2.0)
Higher layer and interoperability by Zigbee Alliance
Up to 254 devices or 64516 (~216) simpler nodes
Named after zigzag dance of the honeybees
Direction of the dance indicates the location of food
Multi-hop ad-hoc mesh network
Multi-Hop Routing: message to non-adjacent nodes
Ad-hoc Topology: No fixed topology. Nodes discover each other
Mesh Routing: End-nodes help route messages for others
Mesh Topology: Loops possible
Ref: Zigbee Alliance, http://www.Zigbee.org
, Overview
1. Zigbee Features, Versions, Device Types, Topologies
2. Zigbee Protocol Architecture
3. Zigbee Application, Zigbee Application Support Layer
4. Network Layer, Routing: AODV, DSR
5. Zigbee Smart Energy V2
Note: Bluetooth, IEEE 802.15.4 were covered in the previous
lectures..
, Zigbee Overview
Industrial monitoring and control applications requiring small
amounts of data, turned off most of the time (<1% duty cycle),
e.g., wireless light switches, meter reading, patient monitoring
First standard was published in 2004
Ultra-low power, low-data rate, multi-year battery life
Power management to ensure low power consumption.
Less Complex. 32kB protocol stack vs 250kB for Bluetooth
Range: 1 to 100 m, up to 65000 nodes.
Tri-Band:
16 Channels at 250 kbps in 2.4GHz ISM
10 Channels at 40 kb/s in 915 MHz ISM band (USA)
One Channel at 20 kb/s in European 868 MHz band
920 MHz in Japan
, Zigbee Overview (Cont)
IEEE 802.15.4 MAC and PHY
(Except for Zigbee Smart Energy 2.0)
Higher layer and interoperability by Zigbee Alliance
Up to 254 devices or 64516 (~216) simpler nodes
Named after zigzag dance of the honeybees
Direction of the dance indicates the location of food
Multi-hop ad-hoc mesh network
Multi-Hop Routing: message to non-adjacent nodes
Ad-hoc Topology: No fixed topology. Nodes discover each other
Mesh Routing: End-nodes help route messages for others
Mesh Topology: Loops possible
Ref: Zigbee Alliance, http://www.Zigbee.org
