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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

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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