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Randy Kendzior, Dell, Inc.
September 24, 2004
Wireless Technology DiscussionMassachusetts Digital Government Summit
Dell Confidential 2 of 23 Client Technologists
Wireless Networks – A Simple Overview
WPAN WLAN WWAN
Personal space Home, Campus, Hotspots Metros, Countries, Global
Attribute WPAN WLAN WWAN
Standard Bluetooth 802.11 GPRS, CDMA
Usage Model Cable replacementCampus connectivity,
public hotspotsAnytime / anywhere remote
access
Network Ad-hoc, piconetsDedicated enteprise, public
hotspot infrastructureCarrier licensed
infrastructure
Data Rate 1Mbps 11Mbps to 54Mbps 40Kbps to 2.4Mbps
Range/Coverage30' - personal proximity
area300' - campus/hotspot
coverageMetro/global coverage with
vehicular support
Subscription No Sometimes Yes
Cost Low Medium High (with access)
Dell Confidential 3 of 23 Client Technologists
Current WLAN Technology Comparisons
802.11b 802.11a 802.11b/g 802.11a/b/g
Maximum Data Rate 11 Mbps 54 Mbps 54 Mbps 54 Mbps
Frequency Band 2.4 GHz 5 GHz 2.4 GHz 5/2.4 GHz
Channels 3 12 3 12/3
Typical Range Up to 300’ Up to 180’ Up to 300’ Up to 180/300’
802.11b Compatible Yes No Yes Yes
• 802.11b – Broadly deployed, lowest cost solution moving to cell phones and handhelds
• 802.11b/g - New mainstream WLAN solution, best for majority of mobile workers
• 802.11a - Provides added capacity in crowded enterprise environments
• 802.11a/b/g – Future-proof for maximum capacity and compatibility
Dell Confidential 4 of 23 Client Technologists
200620062005200520042004PastPast
Security
Security
Radio
Radio
WLAN standards will emphasize throughput, QoS, security & management…
WLAN Technology RoadmapQoS
QoS
Other
Other
Wi-Fi802.11b
Wi-Fi802.11b 802.11g802.11g
802.11a802.11a
802.11n802.11n
WME(eDCF)WME(eDCF) 802.11e802.11e
WEPWEP WPA(TKIP)WPA
(TKIP)802.11i
(AES)802.11i
(AES)
802.1x802.1x
CiscoCCXv1Cisco
CCXv1 CCXv2CCXv2 CCXv3CCXv3
•Migration to dual-band•Faster data rates with .11n•Migration to dual-band•Faster data rates with .11n
•VoIP & streaming support•VoIP & streaming support
•Strong AES encryption•Port-based authentication•Strong AES encryption•Port-based authentication
•Cisco interoperability•Measurements & regulatory•Cisco interoperability•Measurements & regulatory
802.11d802.11d 802.11h802.11h
802.11k802.11k
Dell Confidential 5 of 23 Client Technologists
WLAN Market Overview
• Wireless technologies, characterized according to range and mobility, will evolve to higher data rates
• WLAN market growth will be driven by improved costs, capabilities & usages
• WLAN standards will address throughput, QoS, security and management
• Security remains a key perceived barrier to enterprise WLAN adoption
• WLAN security solutions exist today and will be enhanced in the future
WLAN Market Overview
Dell Confidential 6 of 23 Client Technologists
Wireless technologies, categorized by mobility and range, will continue to evolve to higher data rates...
Wireless Technology RoadmapWLAN
WLAN
Wi-Fi802.11b
Wi-Fi802.11b 802.11g802.11g
802.11a802.11a
802.11n802.11n 11 Mbps
100+ Mbps 54 Mbps
Incr
easi
ng
Ran
ge
and
Mo
bil
ity
WWAN
WWAN GSM
GPRSGSM
GPRS115 kbps
WCDMA(UMTS)
WCDMA(UMTS)
EDGEEDGE HSPDAHSPDA384 kbps 2 Mbps
CDMA2000
1xRTTCDMA2000
1xRTT 1xEV-DV1xEV-DV1xEV-DO1xEV-DO144 kbps 2.4 Mbps 3.1 Mbps
2007+2007+200620062005200520042004PastPast
WPAN
WPAN
Bluetooth1.1
Bluetooth1.1
Bluetooth1.2
Bluetooth1.2
BluetoothEDR
BluetoothEDR
Zigbee802.15.4Zigbee
802.15.4UWB
802.15.3aUWB
802.15.3a
Zigbee802.15.4’Zigbee
802.15.4’
3 Mbps
250 Kbps1 Mbps
100 Mbps+NG UWBNG UWB
480 Mbps
Bluetooth2.x
Bluetooth2.x 1 Mbps
BWA
BWA
WiMAX802.16aWiMAX
802.16a 802.16e802.16e
MobileFi802.20
MobileFi802.20
2-60 Mbps
Dell Confidential 7 of 23 Client Technologists
Wireless Application Landscape
Shor
t R
ange
Lon
g R
ange
Low Data Rate High Data Rate Very high Data Rate
PAN
LAN
WAN
Text, Graphics,Internet, Compressed Audio
Data, Streaming Video,Internet, Hi-Fi Audio
Multi-channel Video & HDTV
Wireless technologies, categorized by mobility and range, will continue to evolve to higher data rates...
UWB
MMDS/LMDS
802.11b/g
802.11g/a
GSM/CDMAGPRS/3G
Bluetooth 1.1
ZigbeeBluetooth 2 (MR)
802.11n
802.16eMAN
802.16a
Dell Confidential 8 of 23 Client Technologists
My_NetworkMy_Data
Wireless will be pervasive, enabling seamless network and device connectivity…
Wireless Everywhere and Anywhere
WPAN
WWAN
BWA
WLAN
GPS
RFID
Airport Customer Office Home
Dell Confidential 9 of 23 Client Technologists
UWB Usage Scenarios Digital Home
Broadband
UWBUWB
UWB
LAN/WLAN Network
UWB
UWB
UWB usage models evolving for Cable replacement in the Digital Home
Dell Confidential 10 of 23 Client Technologists
RADIUS
UWB
802.11a
Acronym Anxiety
WiMAX
Bluetooth
WEP 802.11n
802.11g
802.11i
AES
TKIP
Wi-Fi QoS
Zigbee
CCX
EAP
802.11b
UWB
GPRS
CDMA
802.11e
802.11h
802.16
PEAP
Thank You