Siemens IEEE802.11 Bedienungsanleitung Seite 83

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WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt Page 83 © Siemens, 2002
Standards for WLAN/UMTS interworking
n 3GPP
R5: SA1
Requirements of 3GPP system – WLAN interworking.
R6: SA2
Continuation with architectural considerations
n ETSI BRAN
Su/jointfilesconvert/269151/bgroup on “Interworking between HiperLAN/2 and 3
rd
generation cellular
and other public systems”.
Detailed architectural description mainly based on the Siemens ‘loose
coupling’ principle established
IEEE802.11 and MMAC are now joining this effort.
=> Wireless Interworking Group (WIG).
n WECA (Wireless Ethernet Compatibility Alliance)
‘Wireless ISP Roaming Initiative’
Detailed functional specification for roaming (loose coupling) between
IEEE802.11 WLAN networks available.
Mainly aimed for roaming between ISPs but also applicable for MNOs.
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