riber Server (HSS) 9.3.3 Transport Signalling Gateway Function (T-SGW) 9.3.4 Roaming Signalling Gateway Function (R-SGW) 9.3.5 Media Gateway Control Function (MGCF) 9.3.6 Media Gateway Function (MGW) 9.3.7 Multimedia Resource Function (MRF) 9.3.8 MSC and Gateway MSC Server 9.4 Reference Points 9.4.1 Cx Reference Point (HSS-CSCF) 9.4.2 Gf Reference Point (SGSN-EIR) 9.4.3 Gi (GGSN-Multimedia IP Network) 9.4.4 Gn Reference Point (GGSN-SGSN) 9.4.5 Gm Reference Point (CSCF-UE) 9.4.6 Mc Reference Point (MGCF-MGW) 9.4.7 Mg Reference Point (MGCF-CSCF) 9.4.8 Mh Reference Point (HSS-R-SGW) 9.4.9 Mm Reference Point (CSCF-Multimedia IP networks) 9.4.10 Mr Reference Point (CSCF-MRF) 9.4.11 Ms Reference Point (CSCF-R-SGW) 9.4.12 Mw Reference Point (CSCF-CSCF) 9.4.13 Nc Reference Point (MSC Server-GMSC Server) 9.4.14 Nb Reference Point (MGW-MGW) 9.4.15 CAP Based Interfaces 9.4.16 Iu Reference Point 9.5 Mobility Management 9.5.1 Address Management 9.5.2 Addressing and Routing to Access IM-Subsystem Services 9.5.3 Context Activation and Registration 9.5.4 Location Management 9.5.5 Handover (HO) 9.6 Registration Aspects 9.6.1 Registration Flows 9.6.1.1 Requirements and Assumptions 9.6.1.2 Registration Procedures 9.7 Multimedia Signalling xviii Contents 9.7.1 Support of Roaming Subscribers 9.7.2 Assignment of Serving CSCF 9.8 Service Platforms 9.8.1 VHE/OSA 9.8.1.1 Implementation Options of the VHE/OSA 9.8.2 The SIM Application Toolkit (SAT) 9.8.2.1 SAT Service Capability Server QoS Aspects 9.9.1 End-to-End QoS Negotiation and Policy Requirements 9.9.2 QoS End-to-End Functional Architecture 9.9.2.1 IP BS Manager 9.9.2.2 IP Policy Control 9.9.2.3 Resource Manager 9.9.2.4 Implementing QoS 9.10 Transport Issues 9.10.1 Principles of Mobile Ipv4 9.10.2 Differences between IPv4 and IPv6 9.10.2.1 Reverse Tunnels 9.10.2.2 Use of Route Optimization 9.11 Conclusions References Index The UMTS Network and Radio Access Technology: Air Interface Techniques for Future Mobile Systems Jonathan P. Castro Copyright © 2001 John Wiley & Sons Ltd Print 