Nokia 3G Serving GPRS Support Node

Evolution from GSM to GPRS MSC/VLR PSTN Network SS7 BTS BSC Operator Services HLR/AuC/EIR, SMSC HLR/AuC/EIR/SMSC Border Gateway (BG) Serving GPRS Support Node (SGSN) Gateway GPRS Support Node (GGSN)/ CheckPoint Firewall-1 / VPN Charging Gateway (CG) Local Area Network Router/Firewall Corporate Customer Mobile ISP Data network (Internet) GPRS backbone (IP based) Inter-PLMN Customer Care and Billing Network Management

Evolution from GPRS to 3G RNC BTS PSTN Network 3G MSC/VLR 3G HLR/AuC/EIR, SMSC Um SS7 Network Operator Services Serving GPRS Support Node (3G SGSN) Customer Care and Billing Network Management Mobile ISP Charging Gateway (CG) GPRS backbone network (IP based) Border Gateway (BG) Router/Firewall Gateway GPRS Support Node (GGSN)/ CheckPoint Firewall-1 / VPN Inter-PLMN network Data network (Internet) Corporate Customer Router/Firewall Local Area Network

The Nokia 3G SGSN Developed and optimised specifically for 3G mobile networks, principally UMTS Robust performance for the demands of high throughput and real-time 3G services Connects the 3G radio access network (RAN) with the 3G packet core network Supervises the usage of PLMN services and radio network resources Future-proof technology

Essential to 3G mobile packet core The Nokia 3G SGSN performs crucial tasks in the 3G network SMS delivery Mobility Management Charging data collection and generation Routing (best-route selection) Interworking with 2G Session Management Traffic statistics collection