TR 25.815
Signalling enhancements for
Circuit Switched (CS) and Packet Switched (PS) connections;
Analyses and recommendations
V7.0.0 (Wzip)
2006/10 43 p.
- Rapporteur:
- Mr. Pirskanen, Juho
full Table of Contents for TR 25.815 Word version: 7.0.0
1 Scope p. 6
The present document captures different techniques to improve CS and PS call setup and reconfiguration procedures in UTRA.
2 References p. 6
3 Definitions, symbols and abbreviations p. 6
3.1 Definitions p. 6
3.2 Abbreviations p. 6
4 Background and Introduction p. 7
5 Requirements p. 7
6 Analyses of Current Procedures p. 9
6.1 Call Setup time for CS and PS Calls p. 9
6.1.1 RRC Connection Setup p. 9
6.1.2 CS Call Setup p. 12
6.1.2.1 Mobile Originated AMR call setup p. 12
6.1.2.2 Mobile Originated Video Telephony Call Setup p. 15
6.1.3 PS Call Setup p. 16
6.1.4 CELL_FACH to CELL_DCH State Transition p. 18
6.1.5 Reconfiguration of the DCH p. 19
6.2 Void
6.3 Effects of the Mobility p. 19
6.3.1 CELL_FACH State Mobility p. 19
6.3.1.1 Cell Update started before SMC received by UE p. 20
6.3.1.2 Cell Update started after SMC received by UE, but L2 ACK for SMC not received by UTRAN p. 21
6.3.1.3 Cell Update started after SMC received by UE and L2 ACK for SMC received by UTRAN p. 22
6.3.1.4 Cell Update after SMCC, before L2 ack for SMCC delivered to UE. p. 23
7 Overview of Proposed Improvements p. 23
7.1 Default Configurations p. 24
7.2 Stored Configurations p. 24
7.2.1 General Principle p. 24
7.2.2 Signalling of Stored Configurations at RB Setup p. 24
7.2.2.1 Establishment of a Stored Configuration p. 24
7.2.2.2 Use of a Previously Stored Configuration p. 25
7.2.2.3 Other Affected Messages p. 25
7.2.2.4 Management of Stored Configurations p. 25
7.2.3 Stored Configurations Management by Explicit Signalling p. 27
7.3 Configurations for RB and SRB p. 29
7.4 Enhancements to System Information Broadcast p. 29
7.4.1 Reducing the SIB7 reading time p. 29
7.4.2 Reducing the SIB11 reading time in CELL_DCH to CELL_FACH p. 30
7.5 Avoiding Activation Time in Reconfiguration p. 30
7.5.1 Utilising Hard Handover p. 30
7.5.2 Utilising Synchronization via Change of Uplink Scrambling Code p. 32
7.5.3 Extending the Utilisation of RRC Connection Setup Message p. 33
7.6 Enhancements on RACH p. 34
7.7 Enhancements to RRC Connection Establishment Procedure p. 38
8 Conclusions p. 39
8.1 Default Configurations p. 39
8.2 Stored Configurations p. 40
8.3 Configurations for RB and SRB p. 40
8.4 Enhancements to System Information Broadcast p. 40
8.4.1 Reducing the SIB7 reading time p. 40
8.4.2 Reducing the SIB11 reading time in CELL_DCH to CELL_FACH p. 40
8.5 Avoiding Activation time in Reconfiguration p. 40
8.5.1 Utilising Hard Handover p. 40
8.5.2 Utilising Synchronization via Change of Uplink Scrambling Code p. 40
8.5.3 Extending the Utilisation of RRC Connection Setup Message p. 40
8.6 Enhancements on RACH p. 40
8.7 Enhancements to RRC Connection Establishment Procedure p. 41
9 Recommendations p. 41
$ Change history p. 41
