Siemens IEEE802.11 User Manual
Page 76
WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt
Page 76
© Siemens, 2002
PSTN
PLMN access
PLMN core
VLR
HSS
AUC
SGSN
SCPLNP
IN
GGS
N
TDM / ATM / IP
MSCS
MSCS
BTS
BSC
BTS
Node B
Node B
RNC
internet
wlan local access network
WLAN – UMTS Interworking:
Ancient approach: ‘tight coupling’
WLAN as just another radio access technology of UMTS
n
All UMTS services become available over WLAN.
but:
n
PLMN is burdened with high bandwidth WLAN traffic.
n
Wi-Fi does not provide all the functionality needed (QoS, security).
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- ADVANCE NETWORK COMMUNICATIONS BOARD/DATANET 2000592-001 (72 pages)
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- 5890 (102 pages)
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- 108 (143 pages)
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- Commissioning PC Stations C79000-G8976-C156-07 (300 pages)
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