Azaire™ Wireless Services Gateway
3GPP PDG, TTG and SeGW for Multi-Access Networks
The Azaire™ Wireless Services Gateway (WSG) is a 3GPP Packet Data Gateway (PDG), Tunnel Terminating Gateway (TTG), and Security Gateway (SeGW) as specified in the following 3GPP Release 6 Technical Specifications:
- TS 22.234 – Requirements on 3GPP system to Wireless Local Area Network (WLAN) interworking
- TS 23.234 - 3GPP system to Wireless Local Area Network (WLAN) interworking; System description
- TS 24.234 – 3GPP system to WLAN interworking; User Equipment (UE) to Network Protocols; Stage3.
- TS 29.161 - Wireless Local Area Network (WLAN) Access
- TS 29.234 - 3GPP system to WLAN interworking; Stage 3
- TS 33.234 – 3G Security; WLAN interworking security
The WSG performs the role of a mobile service provider edge gateway that works with the Azaire SCN-RAC serving as a 3GPP-compliant AAA Server to the HLR/HSS. The WSG supports a wide range of IP broadband access technologies including IWLAN, UMA and Femtocells to provide a rich blend of FMC services for the Mobile Network Operator.
COMMON PACKET DATA (APN) SERVICES
The WSG can be configured to connect to the mobile operator’s GGSN using the 3GPP Gn interface (TTG mode) or directly to IP network(s) to provide APN based mobile data services (PDG mode). The WSG interoperates with all major GGSNs in the market including Ericsson, Cisco, Nokia and Nortel to provide seamless access to GGSN based packet data services over broadband IP networks.
Service and APN Specific Authorization
The Azaire SCN-RAC retrieves the user’s subscription information from the HLR and forwards it to the WSG. This allows the WSG to validate the APN requested by the user and provide APN based services.
SECURE ACCESS
The IPSec tunnels between WLAN and the WSG provide the highest level of security over-the-air and through the public IP network. The WSG isolates the core network from unauthenticated WLAN traffic since only traffic from secure IPSec tunnels is forwarded. WSG supports both Internet Key Exchange (IKE) version 1 and version 2.
SIMULTANEOUS Multi-service access
The WSG R5 supports simultaneous access to legacy GGSN based services in the TTG mode as well as new services directly from Wi-Fi in the PDG mode. This enables the dual-mode end subscriber to switch between GGSN based services and direct services on the same IPSec tunnel.