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Wireless laptop evolution


Lisa Phifer
01.19.2006
Rating: -4.35- (out of 5)


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The first wireless interface to be embedded in laptops to any significant degree was probably Infrared (IrDA), added to Windows 95 for cable-free printing. In 2003, Intel Centrino fostered an 802.11b explosion; as a result, Wi-Fi now ships as standard equipment with virtually every laptop. 2005 was the year that Bluetooth finally emerged as a factory-installed option on many laptops. As new technologies appear, what wireless interfaces can you expect when you order your next laptop, and which should you buy?

Reaching faster and farther

Announcements made at this month's Consumer Electronics Show (CES) provide insight into recent wireless developments and their impact on corporate laptops. For example:

Up close and personal

Bluetooth is popular as a cable replacement for connecting headsets and vehicle audio systems to PDAs and smartphones. Bluetooth can connect many devices to corporate laptops -- for example, synchronizing PDAs, sharing business cards, and sending files to portable printers. Bluetooth operates over a distance of 10 to 100 meters, depending on device class. Version 2.0 Enhanced Data Rate (EDR) can reach up to 3 Mbps. In mid-2005, the Bluetooth SIG announced that it will develop its next high rate Bluetooth specification based on Ultra Wide-Band (UWB) radio. UWB can send data over short distances at very high rates with low power consumption. Currently, there are two competing standards that deliver 500 Mbps at 2 meters, or 110 Mbps at 10 meters.

Convenience, cost, and ubiquity

End us

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ers prefer embedded wireless primarily for convenience. PC cards and USB wireless adapters may be small, lightweight, and relatively inexpensive, but they're easily forgotten, lost, and broken.

Corporate purchasers must also consider consistency of equipment in the field for maintenance and tech support. Even small differences in per-unit cost matter when you're buying in bulk. While this is true for every laptop feature, embedded network technology requires further consideration.

After-market wireless adapters create variability in the installed base, but they do provide more flexibility as technologies mature. Laptops ship with embedded Ethernet by default because 10/100 Ethernet is stable, and has been for years. When you order embedded wireless in your next laptop fleet, you'll be driving a stake into the ground. So choose carefully -- your networks and services must support those laptops for years to come.


[TABLE]About the author Lisa Phifer is vice president of Core Competence Inc., a consulting firm specializing in network security and management technology. Phifer has been involved in the design, implementation, and evaluation of data communications, internetworking, security, and network management products for nearly 20 years. She teaches about wireless LANs and virtual private networking at industry conferences and has written extensively about network infrastructure and security technologies for numerous publications. She is also a site expert to SearchMobileComputing.com and SearchNetworking.com.

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