1 Objectives.................................................................................................5
2 Nokia’s UMTS network Architecture .....................................................6
2.1 Nokia´s UMTS Network Concepts.............................................................6
2.2 UMTS core network (CN) ..........................................................................7
2.3 The UMTS Terrestrial Radio Access Network ..........................................8
3 Core Network Elements ........................................................................10
3.1 Circuit Switching Domain.........................................................................10
3.1.1 Mobile Switching Center (MSC)..............................................................10
3.1.2 Inter-Working unit (IWU)..........................................................................11
3.1.3 Home Location Register (HLR)...............................................................12
3.1.4 Service Routing Register (SRRi).............................................................13
3.2 Packet Switching Domain ........................................................................14
3.2.1 Serving GPRS Support Node (SGSN) ....................................................15
3.2.2 Gateway GPRS Support Node (GGSN)..................................................16
3.2.3 Border Gateway (BG)..............................................................................16
3.2.4 Service Switching Point (SSP) ................................................................16
3.2.5 Call Processing Server (CPS) .................................................................17
3.2.6 IP by-passing gateway ............................................................................18
3.2.7 Media Gateway (MGW) ...........................................................................19
3.2.8 Legal Interception Gateway (LIG) ...........................................................19
3.2.9 Service Control Point (SCP)....................................................................19
4 UTRAN Network Elements....................................................................20
4.1 DX 200 RNC............................................................................................20
4.1.1 Functionality.............................................................................................20
4.2 Nokia WCDMA BTS Family.....................................................................23
Nokia UltraSite BTS.................................................................................24
4.2.2 Nokia MetroSite BTS...............................................................................25
4.2.3 Nokia WCDMA Site Solutions.................................................................27
4.3 UTRAN Interfaces – Advanced Topics ...................................................29
4.3.1 Open standard interfaces ........................................................................29
4.3.2 Asynchronous Transfer Mode (ATM)......................................................30
4.3.3 Physical interfaces...................................................................................31
5 3G Network Management......................................................................32
5.1 Nokia Element Management Tools.........................................................33
5.2 NMS Basic Functionality..........................................................................34
5.2.1 Nokia Network Monitoring Solution.........................................................34
5.2.2 Radio Network (RAN) Configuration Management.................................36
5.2.3 Packet Switched Core Network Configuration Management..................37
5.2.4 Development of Circuit Switched Core Network.....................................38
5.3 Nokia NMS Architecture and Configuration ............................................39
3G/UMTS Architecture
4 (48) © Nokia Networks Oy
CTUX0017
Issue 2.0en
6 Network Evolution .................................................................................40
7 Review of Architecture ..........................................................................46