Transcript Wireless USB for HomeRF-Lite

Open House, Berlin
June 3, 2003
Bob Heile, Chairman, Zigbee
Alliance
Hosted by Nanotron Technologies
Today’s Agenda
Time
Discussion Topic
Moderator
1:00 PM Welcome and Introductions
Bob Heile, ZigBee Alliance Chairman
1:05 PM ZigBee Alliance Overview,
Bob Heile
Goals and Objectives
1:40 PM
ZigBee Promoter Introductions and Presentations:
Philips
Michael Eckardt
Motorola
Kristen Law
Mitsubishi
Jinyun Zhang
Invensys
Geoff Mulligan
Honeywell
Patrick Gonia
2:30 PM IEEE 802.15.4 Status and Technical
2:50 PM Update
Break
Pat Kinney,Kinney Consulting, Chair IEEE 802.15.4
Month Year
2
Copyright 2003 The ZigBee Alliance, Inc.
Today’s Agenda (2)
Time
Discussion Topic
Moderator
3:10 PM ZigBee Marketing Overview
Venkat Bahl, Vice Chairman, ZigBee Alliance
3:30 PM ZigBee Technical Working Groups Goals and activities of each working group
Architecture Subcommittee
Profiles
Building Automation
Networking
Security
Interoperability
4:00 PM ZigBee Member Companies
Presentations from some of the
ZigBee member companies
Don Sturek, Figure8
Nick Shepherd, Philips
Pat Kinney, Kinney Consulting
Monique Bourgeois, Motorola
Ed Callaway, Motorola
Bhupender Virk, Chair of Interoperability WG
AMI , Certicom, Chipcon, ENQ, Figure 8 Wireless,
Millennial Net, Nanotron, Samsung, Zensys, ZMD
5:00 PM Closing Q & A
Bob Heile
5:30 PM Networking Reception & Boat Cruise
Month Year
3
Copyright 2003 The ZigBee Alliance, Inc.
Mission Statement
To enable reliable, cost-effective, lowpower, wirelessly networked,
monitoring and control products based
on an open global standard.
Month Year
4
Copyright 2003 The ZigBee Alliance, Inc.
The ZigBee Alliance Solution
• Targeted at home and building automation and
controls, consumer electronics, PC peripherals,
medical monitoring, and toys
• Industry standard through application profiles
running over IEEE 802.15.4 radios
• Primary drivers are simplicity, long battery life,
networking capabilities, reliability, and cost
• Alliance provides interoperability and
certification testing
Month Year
5
Copyright 2003 The ZigBee Alliance, Inc.
History
Proposals Proposal ZigBee Alliance
formed
Initial MRD RSI/TRD
v0.2 to IEEE
ZigBee
IEEE 802.15.4
PAR
Proposals
1998
1999
2000
2001
Month Year
Reviews
Stand.
Complete
2002
6
Copyright 2003 The ZigBee Alliance, Inc.
Promoter Companies
Month Year
7
Copyright 2003 The ZigBee Alliance, Inc.
Membership Classes
• Promoters
– founding members of ZigBee, who form the
Board of Directors. There are currently 5
promoters + 1 chairperson
• Participants
– members who generally wish to make technical
contributions and/or serve on the Technical
Group committees. These members have early
access to specifications, and they may also
chair working group subcommittees. They are
in a position to help shape the ZigBee
technology for industrial applications and the
connected home.
Month Year
8
Copyright 2003 The ZigBee Alliance, Inc.
Working Groups
• Profile Architecture (Nick Shepherd)
• Network (Monique Bourgeois)
• Security (Larry Puhl, acting)
• Interoperability (Bhupender Virk)
• Building Automation (Pat Kinney)
• Marketing (Venkat Bahl)
Month Year
9
Copyright 2003 The ZigBee Alliance, Inc.
Organization Structure
Larry Puhl, acting
Month Year
10
Copyright 2003 The ZigBee Alliance, Inc.
The Wireless Market
GRAPHICS INTERNET
HI-FI
AUDIO
STREAMING
VIDEO
DIGITAL
VIDEO
MULTI-CHANNEL
VIDEO
>
LONG
TEXT
SHORT
< RANGE
802.11b
LAN
802.11a/HL2 & 802.11g
Bluetooth 2
ZigBee
PAN
Bluetooth1
LOW
< DATA RATE
>
HIGH
Month Year
11
Copyright 2003 The ZigBee Alliance, Inc.
Applications
security
HVAC
AMR
lighting control
access control
BUILDING
AUTOMATION
patient
monitoring
fitness
monitoring
CONSUMER
ELECTRONICS
TV
VCR
DVD/CD
remote
ZigBee
PERSONAL
HEALTH CARE
asset mgt
process control
environmental
energy mgt
Wireless Control that
Simply Works
INDUSTRIAL
CONTROL
RESIDENTIAL/
LIGHT
COMMERCIAL
CONTROL
Month Year
PC &
PERIPHERALS
mouse
keyboard
joystick
security
HVAC
lighting control
access control
lawn & garden irrigation
12
Copyright 2003 The ZigBee Alliance, Inc.
Development of the Standard
APPLICATION
ZIGBEE STACK
SILICON
• ZigBee Alliance
– 50+ companies: semiconductor
mfrs, IP providers, OEMs, etc.
Customer – Defining upper layers of
protocol stack: from network to
application, including
ZigBee
application profiles
Alliance
IEEE
– First profiles published mid
802.15.4
2003
• IEEE 802.15.4 Working Group
– Defining lower layers of protocol
stack: MAC and PHY scheduled
for release in April
Month Year
13
Copyright 2003 The ZigBee Alliance, Inc.
Frequencies and Data Rates
2.4 GHz
BAND
COVERAGE
DATA RATE
ISM
Worldwide
250 kbps
16
Europe
20 kbps
1
Americas
40 kbps
10
868 MHz
915 MHz
ISM
Month Year
# OF CHANNEL(S)
14
Copyright 2003 The ZigBee Alliance, Inc.
Stack Reference Model
End developer applications,
designed using application profiles
Application interface designed using
general profile
Topology management, MAC
management, routing, discovery
protocol, security management
Channel access, PAN maintenance,
reliable data transport
Transmission & reception on the
physical radio channel
ZA1
ZA2
…
ZAn
IA1
API
IAn
UDP
IP
ZigBee NWK
802.2 LLC
MAC (SSCS)
IEEE 802.15.4 MAC (CPS)
IEEE 802.15.4 PHY
Month Year
15
Copyright 2003 The ZigBee Alliance, Inc.
Protocol Stack Features
• Microcontroller utilized
• Full protocol stack <32 k
• Simple node-only
stack ~4k
• Coordinators
require extra RAM
– Node device database
– Transaction table
– Pairing table
Customer
APPLICATIONS
APPLICATION INTERFACE
SECURITY
ZigBee
Alliance
NETWORK LAYER
Star/Cluster/Mesh
MAC LAYER
MAC LAYER
PHY LAYER
2.4 GHz
915MHz
Application
Month Year
IEEE
802.15.4
868 MHz
ZigBee Stack
Silicon
16
Copyright 2003 The ZigBee Alliance, Inc.
ZigBee and Bluetooth
Competitive or
Complementary?
ZigBee and Bluetooth
Optimized for different applications
• Bluetooth
• ZigBee
– Larger packets over small
– Smaller packets over
network
large network
– Ad-hoc networks
– Mostly Static
networks with many,
– File transfer
infrequently used
– Screen graphics, pictures,
devices
hands-free audio, Mobile
– Home automation,
phones, headsets, PDAs,
toys, remote controls,
etc.
etc.
Month Year
18
Copyright 2003 The ZigBee Alliance, Inc.
ZigBee and Bluetooth
Address Different Needs
• Bluetooth is a
cable replacement
for items like
Phones, Laptop
Computers,
Headsets
• Bluetooth expects
regular charging
– Target is to use
<10% of host
power
Month Year
19
Copyright 2003 The ZigBee Alliance, Inc.
ZigBee and Bluetooth
Address Different Needs
• ZigBee is better for
devices Where the
battery is ‘rarely’
replaced
– Targets are :
• Tiny fraction of host power
• New opportunities where
wireless not yet used
Month Year
20
Copyright 2003 The ZigBee Alliance, Inc.
ZigBee and Bluetooth
Air interface
ZigBee
Bluetooth
• FHSS
• DSSS- 11 chips/
symbol
• 1 M Symbol / second
• 62.5 K symbols/s
• Peak Information Rate
• 4 Bits/ symbol
~720 Kbit / second
• Peak Information Rate
~128 Kbit/second
Month Year
21
Copyright 2003 The ZigBee Alliance, Inc.
ZigBee and Bluetooth
Voice
Application Interface
Network Layer
Service
Discovery
Protocol
(Serial Port)
L2CAP
Host Control Interface
Link Manager
MAC Layer
MAC Layer
Link Controller
Baseband
RF
PHY Layer
ZigBee
Stack
Fax
Telephony OBEX
Control
RFCOMM
Protocol
Data Link Layer
Silicon
Dial-up
Networking
Application
vMessage
Intercom
Headset
Cordless
Group Call
vCard
vCal
vNote
User Interface
Application
Silicon
Zigbee
Bluetooth
Stack
Applications
Bluetooth
Protocol Stack Comparison
Month Year
22
Copyright 2003 The ZigBee Alliance, Inc.
ZigBee and Bluetooth
Timing Considerations
ZigBee:
• Network join time = 30ms typically
• Sleeping slave changing to active = 15ms typically
• Active slave channel access time = 15ms typically
Bluetooth:
• Network join time = >3s
• Sleeping slave changing to active = 3s typically
• Active slave channel access time = 2ms typically
ZigBee protocol is optimized for
timing critical applications
Month Year
23
Copyright 2003 The ZigBee Alliance, Inc.
Initial Enumeration
ZigBee
Bluetooth
Coordinator
Coordinator
Month Year
24
Copyright 2003 The ZigBee Alliance, Inc.
ZigBee and Bluetooth
AIR INTERFACE
PROTOCOL STACK
BATTERY
DEVICES/NETWORK
LINK RATE
RANGE
Month Year
Bluetooth
ZigBee
FHSS
DSSS
250 kb
28 kb
rechargeable non-rechargeable
8
255
1 Mbps
250 kbps
~10 meters (w/o pa) ~30 meters
Comparison Overview
25
Copyright 2003 The ZigBee Alliance, Inc.
An Application Example
Battery Life & Latency in a Light Switch
• Wireless Light switch –
– Easy for Builders to Install
• A Bluetooth Implementation
would either :
– keep a counter running so
that it could predict which
hop frequency the light
would have reached or
– use the inquiry procedure to
find the light each time the
switch was operated.
Month Year
26
Copyright 2003 The ZigBee Alliance, Inc.
Light switch using Bluetooth
• Option 1: use counter to predict hop
frequency reached by light
– The two devices must stay within 60 us (~1/10 of
a hop)
– With 30ppm crystals, devices need to
communicate once a second to track each other's
clocks.
– Assume this could be improved by a factor of 100
then devices would need to communicate once
every 100 seconds to maintain synchronization.
– => 900 communications / day with no information
transfer + perhaps 4 communications on demand
– 99.5% Battery Power wasted
Month Year
27
Copyright 2003 The ZigBee Alliance, Inc.
Light switch using Bluetooth
• Option 2: Inquiry procedure to locate
light each time switch is operated
– Bluetooth 1.1 = up to 10 seconds typical
– Bluetooth 1.2 = several seconds even if
optimized
– Unacceptable latency
Month Year
28
Copyright 2003 The ZigBee Alliance, Inc.
Light switch using ZigBee
• With DSSS interface, only need to
perform CSMA before transmitting
– Only 200 µs of latency
– Highly efficient use of battery power
ZigBee offers longer battery
life and lower latency than a
Bluetooth equivalent.
Month Year
29
Copyright 2003 The ZigBee Alliance, Inc.
ZigBee and Bluetooth
Conclusion
• ZigBee targets applications not
addressable by Bluetooth or any other
wireless standard
• ZigBee and Bluetooth complement for a
broader solution
Month Year
30
Copyright 2003 The ZigBee Alliance, Inc.
More Information
ZigBee Alliance web site
http://www.ZigBee.org
IEEE 802.15.4 web site
http://www.ieee802.org/15/pub/TG4.html
Bob Heile, Chair
[email protected]
Month Year
31
Copyright 2003 The ZigBee Alliance, Inc.