WLAN – UMTS Interworking: Ancient approach: ‘tight coupling’

BTS

MSCS

MSCS

BTS

Node B

Node B

BSC

RNC

PLMN access

TDM / ATM / IP

HSS

 

LNP

PSTN

AUC

VLR

SCP

 

IN

 

PLMN core

GGS

SGSNN

internet

wlan local access network

WLAN as just another radio access technology of UMTS

νAll UMTS services become available over WLAN. but:

νPLMN is burdened with high bandwidth WLAN traffic.

νWi-Fi does not provide all the functionality needed (QoS, security).

WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt

Page 76

© Siemens, 2002

 

 

 

Page 76
Image 76
Siemens IEEE802.11 manual Wlan Umts Interworking Ancient approach ‘tight coupling’