Siemens IEEE802.11 Tutorial page 74

Part 9: WLAN – UMTS Interworking
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UMTS and Wireless LAN are different
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WLAN – UMTS Interworking: Ancient approach: ‚tight coupling'
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WLAN as an exension of a mobile network
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WLAN is much cheaper than 2G/3G
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Conclusions for Mobile Network Operators
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WLAN – UMTS Interworking: Now widely accepted: ‚loose coupling'
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WLAN loosely coupled to a Mobile Network
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E.g.: Web based authentication and mobile network security
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Standards for WLAN – UMTS Interworking
WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt Page 74 © Siemens, 2002