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Wireless Network Physical Architecture 75
Figure 3.25 : Wireless MAN enabled phones
(courtesy of Samsung Electronics)
with higher vertical beamwidth, provide coverage over short-to-medium distances, with
a second set of high-gain, low vertical beamwidth antennas providing coverage at longer
range.
3.5.3 Mobile Wireless MAN Devices
The first implementation of mobile wireless MAN services and devices, delivering
broadband Internet access to the user on the move, has been in the South Korean
market, driven by the rapid development of the WiBro standard (a sub-set of 802.16e).
Commercial uptake has also been speeded by the use of licensed spectrum, and the
granting in 2005 of operating licenses to three telecom companies.
The form factor for devices to deliver mobile Internet services reflects the need to
combine telephony and PDA capabilities—a larger screen and QWERTY input to
overcome the limitations experienced with WAP phones. Figure 3.25 shows two early
WiBro phones developed by Samsung.
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