TS 123 121 : 3.6.0

Intellectual Property Rights
Foreword
Foreword
1 Scope
2 References
3 Definitions
4 Working assumption
  4.1 General
  4.2 Iu Interface
        4.2.1 Iu Control Plane
        4.2.2 Iu User plane
              4.2.2.1 Principles of User Data Retrieve in UMTS and
                      at GSM-UMTS Hand-Over for PS Domain
              4.2.2.2 Packet buffering in SRNC and transmission of
                      not yet acknowledged downstream packets at
                      SRNC relocation
              4.2.2.3 Load sharing
  4.3 UMTS Mobility Management (UMM)
        4.3.1 Location Management and Mobility Management concept
                overview
                4.3.1.1 Use of combined procedures for UMTS
        4.3.2 Description of the Location Management and Mobility
                Management Concept
                4.3.2.1 Area concepts
        4.3.3 Relationship between MM and SM states for an UE
        4.3.4 Requirement in case of temporarily loss of coverage
                of packet UE
        4.3.5 MM functionality in different UE service states
        4.3.6 The RRC state machine
        4.3.7 Relationship between CS and PS service states and
                RRC state for an UE
        4.3.8 Service registration and location update
                4.3.8.1 Location area update
                4.3.8.2 Routing area update
                4.3.8.3 Combined updates
        4.3.9 Paging initiated by CN
        4.3.10 Signalling connection establishment
        4.3.10a CS Domain Signalling Requirements (in particular
                relating to handover)
        4.3.11 Relations between SRNS relocation and Location
                registration
        4.3.12 Requirements on Identifiers for UMTS and GSM
        4.3.13 Use of TMSI signature
                4.3.13.1 IMSI attach
                4.3.13.2 Location Area update
                4.3.13.3 MM System Information
                4.3.13.4 IMSI detach procedure
        4.3.14 Signalling procedures
                4.3.14.1 Idle mode procedures
                4.3.14.2 SRNS Relocation
                4.3.14.3 Comparison between UMTS and GSM
                4.3.14.4 Issues for further study
        4.3.15 (void)
        4.3.16 UTRAN coordination
  4.4 UMTS call control
        4.4.1 Technical Requirements
        4.4.2 Architecture for Multimedia
              4.4.2.1 Packet Switched Domain
              4.4.2.2 Circuit Switched Domain
        4.4.3 Typical Scenarios for Multimedia Control and User
              Plane
              4.4.3.1 H.324M to H.324M Call
              4.4.3.2 IMT-2000 H.323 to H.323 call
  4.5 Core network layer 3
  4.6 Structure of radio interface layer 3
  4.7 Alternate Access technologies to UTRAN
        4.7.1 Advantages of attaching HIPERLAN 2 to UMTS
        4.7.2 HIPERLAN 2 UMTS Interworking
        4.7.3 Related Actions
  4.8 Location of the IP compression function in UMTS
        4.8.1 Functional role of SNDCP/PDCP
        4.8.2 Position for header compression
        4.8.3 Implied protocol stack
  4.9 Short Message Service for UMTS
        4.9.1 Protocols and architecture
  4.10a Cell Broadcast Service in UMTS
        4.10a.1 Network Architecture
  4.10 Mobile IP for UMTS/GPRS End Users
        4.10.1 Mobile IP for UMTS/GPRS End Users
               4.10.1.1 Alterations of and Additions to Current
                        GPRS Standards
  4.11 Allowed network and terminal configurations
5 UMTS to UMTS handover for circuit switched services
6 Interoperability between GSM and UMTS
  6.1 Circuit Switched Handover and Roaming Principles
      6.1.1 UMTS to GSM handover for circuit switched services
      6.1.2 GSM to UMTS handover for circuit switched services
  6.2 Packet Switched Handover and Roaming Principles
      6.2.1 Implications
      6.2.2 Signalling procedures
            6.2.2.1 Handover from UMTS to GSM GPRS
            6.2.2.2 Handover from GSM GPRS to UMTS
Annex A (informative): Reduction of UMTS signalling
      A.1 GLR Concept
      A.1.1 Overview of the GLR concept
Annex B (informative): Change History
History

Specifies issues related to the evolution of the GSM platform towards UMTS with the overall goal of fulfilling the UMTS service requirements, the support of the UMTS role model, support of roaming and support of new functionality, signalling systems and interfaces.