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TechSpec
  • Foreword
  • Introduction
  • 1 Scope
  • 2 References
  • 3 Definitions and abbreviations
  • 4 Architecture and principles
  • 5 Signalling procedures
    • 5.1 GERAN (A/Gb mode)  GERAN (A/Gb mode) handover
    • 5.2 Inter-RAT/mode handover (GERAN A/Gb mode  UTRAN/ GERAN Iu mode)
    • 5.3 Inter-RAT/mode Handover (UTRAN/GERAN Iu mode  GERAN A/Gb mode)
    • 5.3a Inter-RAT Handover (GERAN A/Gb mode to E-UTRAN)
    • 5.3b Inter-RAT Handover (E-UTRAN to GERAN A/Gb mode)
    • 5.4 Handover reject
    • 5.5 Handover cancel
    • 5.6 Container handling
    • 5.7 PS Handover Failure
    • 5.8 GAN Handover
  • 6 Radio interface Signalling
  • A.1 Agreed handover principles
  • B.1 Overview
  • B.2 Primitives in Source BSS
  • B.3 Primitives in Old SGSN
  • B.4 Primitives in New SGSN
  • B.5 Primitives in Target BSS
  • B.6 Primitives in MS

Introduction

3GPP43.129Packet-switched handover for GERAN A/Gb modeRelease 17Stage 2TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

Packet Switched (PS) handover is introduced in order to support real-time packet-switched with strict QoS requirements on low latency and packet loss. Packet switched handover reduces the service interruption of the user plane information at cell change compared to the cell-reselection and enables methods to improve buffer handling of user plane data in order to reduce packet loss at cell-change.