Capitulo 5

CH. 1 – OVERVIEW OF WIRELESS LANS (WLANS) FUNDAMENTALS OF WIRELESS LANS

OVERVIEW OF WIRELESS LANS (WLANS) ,[object Object],[object Object]

WHAT IS A WIRELESS LAN? ,[object Object]

WHAT IS A WIRELESS LAN? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],http://earlyradiohistory.us/1920au.htm

WHAT IS A WIRELESS LAN? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],More later!

ICONS – WIRELESS DEVICES AND FUNCTIONS

ICONS – TYPICAL WIRED NETWORK DEVICES

ICONS – WIRELESS LAN ANTENNA

IEEE 802.11 AND THE WI-FI ALLIANCE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

WI-FI™ ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

OTHER WIRELESS TECHNOLOGIES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

WLAN EVOLUTION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],802.11 Ratified 802.11a,b Ratified 802.11g Drafted ,[object Object],860 Kbps 900 MHz 1 and 2 Mbps 2.4 GHz Proprietary 1986 1988 1990 1992 1994 1996 1998 2000 2002 1 and 2 Mbps 2.4 GHz 11 Mbps 54 Mbps Standards-based 5 GHz Radio Network Speed

CURRENT STANDARDS – A, B, G ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],802.11 Ratified 802.11a,b Ratified ,[object Object],802.11g is backwards compatible with 802.11b, but with a drawback (later) 802.11g Ratified More later! 860 Kbps 900 MHz 1 and 2 Mbps 2.4 GHz Proprietary 1986 1988 1990 1992 1994 1996 1998 2000 2003 1 and 2 Mbps 2.4 GHz 11 Mbps 54 Mbps Standards-based 5 GHz Radio Network Speed

802.11 PHY (PHYSICAL LAYER) TECHNOLOGIES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],802.11 Ratified 802.11a,b Ratified 802.11g Ratified ,[object Object],More later! 860 Kbps 900 MHz 1 and 2 Mbps 2.4 GHz Proprietary 1986 1988 1990 1992 1994 1996 1998 2000 2003 1 and 2 Mbps 2.4 GHz 11 Mbps 54 Mbps Standards-based 5 GHz Radio Network Speed

ATMOSPHERE: THE WIRELESS MEDIUM ,[object Object],[object Object],[object Object]

WLAN DEVICES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

ANTENNAS ,[object Object],[object Object],[object Object]

CABLE, ACCESSORIES, WIRELESS IP PHONE ,[object Object],[object Object],[object Object],[object Object],[object Object]

CLIENT ADAPTERS ,[object Object],[object Object],[object Object],Drivers are supported for all popular operating systems, including Windows 95, 98, NT 4.0, Windows 2000, Windows ME, Windows XP, Mac OS Version 9.x, and Linux.

CISCO AIRONET 350 SERIES MINI PCI ADAPTER ,[object Object],[object Object],[object Object]

BEYOND LAPTOPS: OTHER 802.11-ENABLED DEVICES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],HP iPAQ 5450 PDA Compaq Tablet PC HHP Barcode Scanner Epson Printer Sharp M25X Projector SpectraLink Phone

“ BUSINESS-CLASS”VS CONSUMER WLAN ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

CONSUMER WIRELESS PRODUCTS ,[object Object]

IMPLICATIONS ,[object Object],[object Object]

WLAN GROWTH AND APPLICATIONS Don’t know the source of this and there is considerable debate whether 802.11a will win out over 802.11b/g

MOMENTUM IS BUILDING IN WIRELESS LANS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

WIRELESS LANS ARE TAKING OFF ($ Billions) Source: Forward Concepts, 2003 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Worldwide WLAN Market *includes embedded clients, add-on client cards, & infrastructure equipment for both the business and consumer segments CAGR = 43%

FOUR MAIN REQUIREMENTS FOR A WLAN SOLUTION ,[object Object],[object Object],[object Object],[object Object]

OTHER REQUIREMENTS ,[object Object],[object Object]

RADIO SIGNAL INTERFERENCE ,[object Object],[object Object],[object Object],[object Object]

RADIO SIGNAL INTERFERENCE ,[object Object]

POWER CONSUMPTION ,[object Object],[object Object]

INTEROPERABILITY ,[object Object],[object Object],[object Object],[object Object],[object Object]

WIRELESS LAN SECURITY: LESSONS “ War Driving” Hacking into WEP Lessons: ,[object Object],[object Object],[object Object]

WIRELESS LAN SECURITY ,[object Object],[object Object],[object Object],[object Object]

INSTALLATION AND SITE DESIGN ISSUES—BRIDGING

INSTALLATION AND SITE DESIGN ISSUES—WLAN

IEEE 802.11 STANDARDS ACTIVITIES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Capitulo 5

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Capitulo 5