April 2011
Intermediate to advanced
368 pages
11h 36m
English
Content preview from Secure Roaming in 802.11 Networks
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Roaming between 802.11 and Other Wireless Technologies
IP Access Network Provider Access Network
Base Station
Controller
GSM RAT802.11 RAT
MGW
MGCF
MSCMSC
MGCF
MGW
UMA Network
Controller
PSTN
IMS Services
PSTN
IMS Services
Signaling and Bearer Path
Bearer Path
Signaling Path
IPSec Tunnel
Core 3G/2G+
Network
HLR
AuC
Figure 10.5: UMA-Based Roaming between Cellular and 802.11.
10.8 Third Generation Partnership Program 2
In addition to and separately from 3GPP, active work is proceeding on independent 3GPP2
specifications for interworking with WLAN [23]. Of particular interest are the following three
documents: [15], [16], and [17]. In [17], a description of the general ...
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