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Yan Zhang Cheng Li Brian Kirkpatrick. L ow rate WPAN standard. Open Systems Interconnection Model. Zigbee Networks & Devices. Layout : s tar , t ree , m esh Nodes : coordinator, router, end device Algorithm considers both signal quality and hop count for each route.

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l ow rate wpan standard

Yan Zhang

  • Cheng Li
  • Brian Kirkpatrick

Low rate WPAN standard

zigbee networks devices
Zigbee Networks & Devices
  • Layout: star, tree, mesh
  • Nodes: coordinator, router, end device
  • Algorithm considers both signal quality and hop count for each route.
  • Avoids recalculating route
  • Avoids resending data
zigbee multiplexing
Zigbee Multiplexing
  • Orthogonal Signaling
    • BPSK / QPSK
    • Allows multiple nodes to talk at the same time
      • http://en.wikipedia.org/wiki/Phase-shift_keying
  • CSMA-CA
    • Carrier Sense Multiple Access - Collision Avoidance
    • Listen:
      • If someone\'s talking, wait for some random t < 2^n
      • Otherwise, your turn.
    • Battery Life Extension ( BLE )
      • \'n\' is limited to n < 2
      • Reciever can be awake for a shorter time
xbee 802 15 4 rf modules
XBee 802.15.4 RF Modules
  • http://www.digi.com/products/wireless-wired-embedded-solutions/zigbee-rf-modules
xbee 802 15 4 rf modules1
XBee 802.15.4 RF Modules
  • Ideal for low-power, low-cost applications
  • XBee-PRO modules are power-amplified versions
  • Fully interoperable with other XBee products
xbee vs xbee pro
XBee vs XBee-PRO
  • http://www.sparkfun.com/datasheets/Wireless/Zigbee/XBee-Datasheet.pdf
xbee vs xbee pro1
XBee vs XBee-PRO
  • http://www.sparkfun.com/datasheets/Wireless/Zigbee/XBee-Datasheet.pdf
why x b ee over bluetooth
Why Xbee over bluetooth
  • Multi-point networks
  • Low power in specific conmunicaitonscenarios
xbee vs bluetooth smd module
Bluetooth SMD RN-41

$25

Baud rate speeds: 1200bps up to 921Kbps

Class 1 radio, 100m distance

15dBmtransmitter power output

-80dBm receivesensitivity

XBee vs Bluetooth SMD Module
  • XBee
  • $23
  • Baud rate speeds: 1200bps - 250 Kbps
  • Indoor/Urban: up to 30moutdoor line-of-sight: up

to 90m

  • 1 mW (0dBm) transmitter power output
  • 1 mW (0dBm) receive sensitivity
xbee vs bluetooth smd module1
XBee vs Bluetooth SMD Module
  • http://www.rovingnetworks.com/files/resources/Bluetooth-RN-41-DS.pdf
xbee vs bluetooth smd module2
XBee vs Bluetooth SMD Module
  • Scenario 1:
  • AAA Alkaline battery (1200 mAh) as power supply
  • Normal mode and default settings
  • Transit 1%, receive 1%, connected 3%,sleep 95%
  • XBee:
  • 1200 * 2 / (35* 0.01 + 50 * 00.1+ 50 * 0.03 + 0.01 * 0.95)
  • = 1017 h
  • Bluetooth SMD:
  • 1200 * 2 / (65 * 0.01 + 35* 0.01+ 30 * 0.03 + 25 * 0.95)
  • =94h
xbee vs bluetooth smd module3
XBee vs Bluetooth SMD Module
  • Scenario 2:
  • AAA Alkaline battery (1200 mAh) as power supply
  • Normal mode and default settings
  • Transit 1%, receive 1%, connected 95%,sleep 3%
  • XBee:
  • 1200 * 2 / (35* 0.01 + 50 * 0.01+ 50 * 0.95 + 0.01 * 0.3)
  • = 50 h
  • Bluetooth SMD:
  • 1200 * 2 / (65 * 0.01 + 35* 0.01+ 30 * 0.95 + 25 * 0.3)
  • = 65 h
xbee vs bluetooth smd module4
XBee vs Bluetooth SMD Module
  • http://www.rovingnetworks.com/files/resources/Bluetooth-RN-41-DS.pdf
easy to use
Easy to use
    • Mount into a receptacle
  • Free X-CTUSoftware
  • http://www.cooking-hacks.com/index.php/blog/tutorial-arduino-deluxe-pack
xbee and gps with arduino uno
XBee and GPS with Arduino UNO
  • Read the data from the GPS module and transmit it through the XBee 802.15.4 .
  • http://www.cooking-hacks.com/index.php/blog/tutorial-arduino-deluxe-pack
zigbee applications
ZigBee Applications

security

HVAC

AMR

lighting control

accesscontrol

TV

VCR

DVD/CD

remote

ZigBee

Wireless Control that

Simply Works

PC & PERIPHERALS

PERSONAL HEALTH CARE

patient monitoring

fitness monitoring

mouse

keyboard

joystick

TELECOM SERVICES

INDUSTRIAL

CONTROL

HOME CONTROL

asset mgt

process control

environmental

energy mgt

security

HVAC

lighting control

access control

irrigation

m-commerce

info services

object interaction (Internet of Things)

application

Application

1. Health Care

2. Remote Control

3. Telecom Services

4. Home Automation

chronic disease m onitoring
Chronic Disease Monitoring

From ZigBee Alliance, health care white paper.

https://docs.zigbee.org/zigbee-docs/dcn/09-4962.pdf

application1

Application

1. Health Care

2. Remote Control

3. Telecom Services

4. Home Automation

compare with infrared based ir remote controls
Compare with infrared-based (IR) remote controls
  • Longer Battery Life
  • Wider Range
  • Better Interference
  • Better Compatibility
  • Higher Price
  • Lower Data Rate
application2

Application

1. Health Care

2. Remote Control

3. Telecom Services

4. Home Automation

application3

Application

1. Health Care

2. Remote Control

3. Telecom Services

4. Home Automation

home automation
Home Automation

Home Heartbeat

conclusion
Conclusion
  • Low power, low range, low cost wireless protocol
  • Uses DSSS and addressing to network
  • Xbee and Xbee-pro
  • Xbee vs Bluetooth modules
  • Particularly suited for:
  • Many to Many
  • Extremely low power burst
references
References
  • http://www.zigbee.org/Standards/Overview.aspx
  • http://en.wikipedia.org/wiki/Zigbee
  • http//en.wikipedia.org/wiki/IEEE_802.15.4
  • http//www.zigbee.org/
  • http://zone.ni.com/
  • http://www.digi.com/products/wireless-wired-embedded-solutions/zigbee-rf-modules/point-multipoint-rfmodules/xbee-series1-module#overview
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