Cisco Cisco Packet Data Gateway (PDG) Documentation Roadmaps
New In This 8.0 Release
▀ SGSN Features
▄ Cisco ASR 5000 Series Product Overview
OL-22937-01
SGSN Features
The system provides wireless carriers with an unusually flexible form of Serving GPRS Support Node (SGSN) services.
Functioning as an SGSN, the system readily handles wireless data services within 2.5G General Packet Radio Service
(GPRS) and 3G Universal Mobile Telecommunications System (UMTS) data networks.
Functioning as an SGSN, the system readily handles wireless data services within 2.5G General Packet Radio Service
(GPRS) and 3G Universal Mobile Telecommunications System (UMTS) data networks.
The following documents have been created or modified to support the SGSN:
Product Overview
SGSN Administration Guide
System Administration Guide
System Enhanced Features Configuration Guide
Command Line Interface Reference
Statistics and Counters Reference
SNMP MIB Reference
CLI Reference Guide
AAA Reference Guide
Thresholding Configuration Guide
ASR 5000 Hardware Installation and Administration Guide
In a GPRS/UMTS network, the SGSN works in conjunction with Radio Access Networks (RANs or UTRANs), Home
Location Registers (HLRs), and Gateway GPRS Support Nodes (GGSNs) to:
Location Registers (HLRs), and Gateway GPRS Support Nodes (GGSNs) to:
Attach/detach subscriber sessions.
Communicate with an HLR to register a subscriber‘s User Equipment (UE), or to authenticate, retrieve or update
subscriber profile information.
Provide Short Message Service (SMS) and other text-based network services for attached subscribers.
Activate and manage IPv4, IPv6, or Point-to-Point Protocol (PPP) -type Packet Data Protocol (PDP) contexts for
a subscriber session.
Setup and manage the data plane between the RNCs and the GGSN.
Provide mobility management, location management, and session management for the duration of a call to
ensure smooth handover.
Provide various types of Charging Data Records (CDRs) to the Charging Gateway Function (CGF).
The remainder of this section contains information on new SGSN features (listed alphabetically) being launched in
release 8.0. Additional information on these features can be found in the Product Overview, SGSN Overview section,
the SGSN Administration Guide, and in the CLI Reference Guide.
release 8.0. Additional information on these features can be found in the Product Overview, SGSN Overview section,
the SGSN Administration Guide, and in the CLI Reference Guide.
2.5G/3G Dual Access
Within the same chassis, the SGSN can simultaneously operate as both a 2.5G SGSN and a 3G SGSN. This co-location
has been done without proprietary protocols thus avoiding problems with mobility and handoff. Dual access provides a
range of benefits, such as: use of the same hardware, load sharing, and the need for fewer IP addresses.
has been done without proprietary protocols thus avoiding problems with mobility and handoff. Dual access provides a
range of benefits, such as: use of the same hardware, load sharing, and the need for fewer IP addresses.