Cisco Cisco ASR 5500 Fiche De Données
Data Sheet
© 2010 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
Page 1 of 1
Cisco SGSN Serving GPRS Support Node:
The Next-Generation SGSN for the UMTS/HSPA Packet Core
The Next-Generation SGSN for the UMTS/HSPA Packet Core
To keep pace with the tremendous growth in demand for mobile broadband services and the massive increase in
mobility events from the movement to “always-on” applications, forward-thinking mobile operators are looking for ways
to boost the performance and capacity of their 3G networks while easing migration to 4G. They are confronting the cost
and complexity of supporting multiple platforms for 2.5G and 3G Serving GPRS Support Nodes (SGSNs), Gateway
GPRS Support Nodes (GGSNs), and in the future the S4 SGSN. And many current SGSNs are optimized for General
Packet Radio Service (GPRS) or Universal Mobile Telecommunications Service (UMTS) but unable to support
migration to High Speed Packet Access (HSPA), HSPA+, and Evolved Packet Core (EPC) networks.
Cisco’s SGSN has become the choice for many of the world’s most innovative 3rd Generation Partnership Project
(3GPP) network operators deploying GSM, UMTS, and HSPA networks. The SGSN offers full support for
UTRAN/GERAN to 3GPP core network access, in order to perform mobility management, GPRS Tunneling Protocol
(GTP) tunneling and detunneling, Packet Data Protocol (PDP) context activation and management, attaches and
detaches, and billing.
Supported on the Cisco
®
ASR 5000, the SGSN provides comprehensive, high-capacity, and standards-compliant
GSM/GPRS, EDGE, UMTS, and HSPA network access support. By performing IP-based transport on all radio and
core network interfaces using standard interfaces, the SGSN’s performance and scalability is enhanced, while
interconnectivity complexity is reduced, providing operators with higher performance for less operational expenditure.
Additionally, the SGSN supports migration toward HSPA networks, and can be upgraded to a Release 8
SGSN that will allow interoperability with the Mobility Management Entity (MME) and the Serving Gateway
(SGW) in EPC networks.
The SGSN Difference
The Cisco ASR 5000 is purpose built to address the needs of mobile packet core networks. Beginning with
activation, the Cisco ASR 5000 SGSN identifies and authenticates the subscriber and routes the subscriber’s
session to the GGSN within the core network. It can then be routed to any endpoint, such as the Internet or any
operator service. The SGSN also manages subscriber mobility and maintains subscriber information, enabling a
consistent experience as a subscriber roams. Cisco’s SGSN accommodates a high rate of simultaneous attaches
and detaches, making it the ideal solution for networks with high packet traffic and a significant subscriber base. In
order to optimize the entire signaling chain, the SGSN’s design eliminates or minimizes bottlenecks caused by large-
scale control signaling.
Key Features and Benefits
●
Industry-leading performance includes high capacity, exceptional throughput, and session and mobility
management.
●
Full UTRAN/GERAN to core network access support includes mobility management, GTP tunneling and de-
tunneling, and PDP context activation and management, as well as attaches/detaches and billing.
●
Optional support for Direct Tunnel and Cisco’s FastPath architecture helps improve the subscriber experience
and reduce operational and capital expenditures by optimizing the usage of subscriber plane resources.
●
2.5G and 3G SGSNs may be combined on a single platform for greater flexibility.