L ow rate wpan standard
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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


Open systems interconnection model

Open Systems Interconnection Model


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


Frequency bands

Frequency Bands


Wireless standard comparison

Wireless Standard Comparison


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


    Multipoint remote control

    Multipoint Remote Control


    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


    Telecom services

    Telecom Services


    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


    Question

    Question?


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