Siemens IEEE802.11 - Manual (Page 80)

WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt Page 80 © Siemens, 2002
PSTN
PLMN access
PLMN core
VLR
HSS
AUC
SGSN
SCPLNP
IN
TDM / ATM / IP
MSCS MSCS
BTS BSC
BTS
Node B
Node B
RNC
internet
wlan local access network
WLAN – UMTS Interworking:
Now widely accepted: ‘loose coupling’
Only Authentication, Authorization and Accounting of WLAN access
is performed by the mobile network operator.
n
Revenues without competing against aggressive WLAN operators.
n
Perfect model for leveraging the huge customer base and
establishing a widely accepted platform for mobile commerce
.
Authentication
Accounting
Siemens contributed ‚loose coupling‘ to standardization.