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Compaq Ipaq 3630 wireless security Manual

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Wireless Security White Paper 11
Wireless Personal-area Networks
Wireless personal-area networks (WPANs) can use Bluetooth, a radio frequency (RF)
specification for point-to-multipoint voice and data transfer. They can also use infrared
technology. A WPAN permits personal devices such as handheld PCs to connect wirelessly to
peripheral devices such as printers or other personal devices.
Figure 3 illustrates a WPAN.
Figure 3: Wireless Personal-area Network
Wireless Wide-area Networks
Historically, wireless wide-area networks (WWANs) have been used to support voice
transmission for mobile telephones. WWANs use one of three digital wireless telephone
technologies: GSM, CDMA, and TDMA.
The Global System for Mobile communication (GSM), developed in Europe, is the most widely
used of the three digital wireless telephone technologies. Code Division Multiple Access
(CDMA) and Time Division Multiple Access (TDMA) were developed in the United States and
are widely used there. GSM is a TDMA technology. The official names for CDMA and TDMA
are IS-95 and IS-136, respectively. Japan’s NT DoCoMo uses I-mode technology in its market.
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