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Summary: IEEE Wireless Communications · August 20046 1536-1284/04/$20.00 © 2004 IEEE
y router
Internet
MOBILITY AND RESOURCE MANAGEMENT
INTRODUCTION
Compared with a wired infrastructure, wireless
LAN (WLAN) has unique advantages, such as
broadband bandwidth capability and low deploy-
ment cost. Thanks to the technology provided by
IEEE 802.11, the WLAN market is experiencing
explosive growth in hot spots such as hotels, hos-
pitals, and campuses, to mention just a few.
With WLANs being deployed in an unlimited
way as access points, wireless users can access
real-time and Internet services virtually anytime,
anywhere, while enjoying the flexibility of mobil-
ity and guaranteed connectivity.
IEEE 802.11 is designed for best effort ser-
vices only. The lack of a built-in mechanism for
support of real-time services makes it very diffi-
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