wireless personal area networks tom siep director short distance wireless standards wireless...
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What is a WPAN? Wireless Personal Area Network Short-range Low Power Low Cost Small networks Communication of devices within a Personal Operating SpaceTRANSCRIPT
Wireless Wireless Personal Area NetworksPersonal Area Networks
Tom SiepTom Siep Director Short Distance Wireless StandardsDirector Short Distance Wireless StandardsWireless Terminals Business UnitWireless Terminals Business UnitTexas Instruments Texas Instruments
TopicsTopics WPANs™WPANs™
WhatWhat Why Why WhoWho WhenWhen
Questions and AnswersQuestions and Answers
WPAN is a trademark of the IEEEWPAN is a trademark of the IEEE
What is a WPAN?What is a WPAN?
WWireless ireless PPersonal ersonal AArea rea NNetworketwork Short-rangeShort-range Low PowerLow Power Low CostLow Cost Small networksSmall networks Communication of devices within a Communication of devices within a
Personal Operating SpacePersonal Operating Space
Why Use a WPAN?Why Use a WPAN? Access primarily to devices being Access primarily to devices being
carriedcarried The Information Technology people The Information Technology people
won’t/don’t carewon’t/don’t care No physical access to wired networkNo physical access to wired network Moderate data rate neededModerate data rate needed
WWLLANs verses WANs verses WPPANsANs((WARNINGWARNING:gross simplifications):gross simplifications)
WLAN is WLAN is outwardly lookingoutwardly looking
•Interacts with wired Interacts with wired infrastructure (LANs)infrastructure (LANs)
WPAN is WPAN is inwardly lookinginwardly looking
•Interacts with Interacts with personal objectspersonal objects
•Network timeframe Network timeframe hours to dayshours to days
•Network timeframe Network timeframe seconds to hoursseconds to hours
•Portable devicesPortable devices •Highly mobile devicesHighly mobile devices
•““Wires are expensive”Wires are expensive” •““Wires get in the way”Wires get in the way”
The WLAN in ActionThe WLAN in Action
Ethernet
IEEE 802.11
The WPAN™ in ActionThe WPAN™ in Action
Who is Defining WPANs?Who is Defining WPANs? SoundSound
LightLight
RadioRadio
Ultrasonic remote controllersUltrasonic remote controllers(proprietary, niche solutions) (proprietary, niche solutions)
IrDA – Infrared Data AssociationIrDA – Infrared Data Association IEEE 802.11IEEE 802.11
HomeRF Lite (now Firefly)HomeRF Lite (now Firefly) IEEE 802.15.1IEEE 802.15.1 Bluetooth™Bluetooth™ IEEE 802.15.3IEEE 802.15.3 IEEE 802.15.4IEEE 802.15.4 LOTS of proprietary systemsLOTS of proprietary systems
IEEE 802.15IEEE 802.15 802.15.1 (Standard)802.15.1 (Standard)
IEEE Standard of Bluetooth™ SpecificationIEEE Standard of Bluetooth™ Specification 802.15.2 (Recommended Practice)802.15.2 (Recommended Practice)
Model and Facilitate Coexistence of WPAN & Model and Facilitate Coexistence of WPAN & WLAN devicesWLAN devices
802.15.3 (Standard)802.15.3 (Standard) A High-Rate (> 20 Mbps) WPANA High-Rate (> 20 Mbps) WPAN
802.15.4 (Standard)802.15.4 (Standard) Raw Data Rate = 2Kb/sec to 200Kb/secRaw Data Rate = 2Kb/sec to 200Kb/sec
Radio2 Study Group (inactive)Radio2 Study Group (inactive) Track Bluetooth2 and recommend an action.Track Bluetooth2 and recommend an action.
IEEE 802.15 Task Group 1IEEE 802.15 Task Group 1 IEEE 802.15 Task Group 1 is converting IEEE 802.15 Task Group 1 is converting
the Bluetooth Specification into an the Bluetooth Specification into an IEEE StandardIEEE StandardConvert to IEEE FormatConvert to IEEE FormatAddingAdding
Introductory materialIntroductory materialSpecification and Description Language Specification and Description Language
(SDL) (SDL) LLC interfaceLLC interface
Letter Ballots, Comments, and Comment Letter Ballots, Comments, and Comment Resolution.Resolution.
Bluetooth Wireless Bluetooth Wireless TechnologyTechnology
Operates in the 2.4 GHz band at a Operates in the 2.4 GHz band at a maximum user data rate of 720Kb/s. maximum user data rate of 720Kb/s. (1Mbit nominal)(1Mbit nominal)
Uses Frequency Hopping spread Uses Frequency Hopping spread spectrum (FHSS)spectrum (FHSS)
Radio transceivers hop from one channel Radio transceivers hop from one channel to another in a pseudo-random fashion, to another in a pseudo-random fashion, determined by the master. determined by the master.
Supports up to 8 devices in a piconet Supports up to 8 devices in a piconet (1 master and 7 slaves). (1 master and 7 slaves).
Piconets can combine to form Piconets can combine to form scatternets.scatternets.
IEEE 802.15.1 and IEEE 802.15.1 and BluetoothBluetooth
When WPANs Available?When WPANs Available? SoundSound
LightLight
RadioRadio
Ultrasonic remote controllersUltrasonic remote controllers(proprietary, niche solutions) (proprietary, niche solutions)
IrDA – Infrared Data AssociationIrDA – Infrared Data Association IEEE 802.11IEEE 802.11
HomeRF Lite (now Firefly)HomeRF Lite (now Firefly) IEEE 802.15.1IEEE 802.15.1 BluetoothBluetooth IEEE 802.15.3IEEE 802.15.3 IEEE 802.15.4IEEE 802.15.4 LOTS of proprietary systemsLOTS of proprietary systems
N/A
NowNever
Mid-2001Beginning
Late 20012002
900 MHz 2.4GHz
?
More InformationMore Information
How to Find What You Need in the How to Find What You Need in the Bluetooth™ SpecificationBluetooth™ Specification, IEEE Press, , IEEE Press, November 2000November 2000http://standards.ieee.org/catalog/press/index.html#Bluetoothhttp://standards.ieee.org/catalog/press/index.html#Bluetooth
www.ieee802.org/15www.ieee802.org/15 www.bluetooth.comwww.bluetooth.com www.firefly.orgwww.firefly.org (members only)(members only)
BackupsBackups
(likely not be presented)(likely not be presented)
When to Use a WLANWhen to Use a WLAN Access to BMITS Access to BMITS
(Big Machine In The Sky)(Big Machine In The Sky) The Information Technology (IT) The Information Technology (IT)
people need to be involvedpeople need to be involved Network addressesNetwork addresses High level of Network SecurityHigh level of Network Security Physical access to wired networkPhysical access to wired network
High data rate neededHigh data rate needed
Objectives of IEEE 802Objectives of IEEE 802To develop consensus standards that To develop consensus standards that
benefit the World Wide Networked benefit the World Wide Networked Society.Society.
Maintain the imperative principals of Maintain the imperative principals of standards making:standards making:Due processDue processConsensusConsensusOpennessOpennessBalanceBalanceRights of appealRights of appeal
Publish LAN/MAN Standards in Publish LAN/MAN Standards in electronic formatelectronic format
AcronymsAcronyms WPANWPANTMTM -- -- WWireless ireless PPersonal ersonal AArea rea NNetworketwork IEEE – Institute of Electrical and Electronic IEEE – Institute of Electrical and Electronic
EngineersEngineers IrDA – Infrared Data AssociationIrDA – Infrared Data Association SDL – Specification and Description SDL – Specification and Description
Language (ITU Z.100)Language (ITU Z.100) ITU – International Telecommunications ITU – International Telecommunications
UnionUnion LLC – Logical Link ControlLLC – Logical Link Control BMITS – Big Machine In The SkyBMITS – Big Machine In The Sky