Siemens IEEE802.11 Tutorial page 80

WLAN – UMTS Interworking:
Now widely accepted: 'loose coupling'
Siemens contributed ‚loose coupling' to standardization.
BTS
Node B
Node B
wlan local access network
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
WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt
BTS
MSCS
TDM / ATM / IP
BSC
HSS
PLMN core
RNC
SGSN
PLMN access
MSCS
SCP LNP
AUC
VLR
IN
Authentication
Accounting
internet
PSTN
.
Page 80 © Siemens, 2002