TR 25.804
Feasibility study on uplink enhancements for UTRA TDD
V6.1.0 (Wzip)
2006/03 79 p.
- Rapporteur:
- Mr. Rudolf, Marian
full Table of Contents for TR 25.804 Word version: 6.1.0
1 Scope p. 6
This present document details and compares proposed enhancements to the UTRA TDD uplink in terms of gains and complexity and draws conclusions on future work.
This document is the technical report for the Release 6 study item "Uplink Enhancements for UTRA TDD" [1]. The purpose of this TR is to help TSG RAN WG1 to define and describe the potential enhancements under consideration and compare the benefits of each enhancement with earlier releases for improving the performance of the UTRA TDD uplink, along with the complexity evaluation of each technique. The scope is to either enhance uplink performance in general or to enhance the uplink performance for background, interactive and streaming based traffic.
This activity involves the Radio Access work area of the 3GPP studies and has impacts both on the Mobile Equipment and Access Network of the 3GPP systems.
2 References p. 6
3 Definitions, symbols and abbreviations p. 7
4 Requirements p. 8
5 Reference Techniques in Earlier 3GPP Releases p. 8
5.0 Connection State Model p. 8
5.1 Allocation of Dedicated Resources p. 9
5.2 Allocation of Shared Resources p. 11
5.2.1 General p. 11
5.2.2 Measurements used for Scheduling p. 11
5.2.3 PUSCH Capacity Request Message p. 11
5.2.4 Physical Shared Channel Allocation Message p. 12
5.3 Uplink TFCS Management with RRC Signalling p. 13
5.4 Transport Format Combination Selection in the UE p. 14
5.4.1 Description of TFC selection method p. 14
5.4.1.1 TFC selection in UE for 3.84 Mcps TDD option p. 16
5.4.1.2 TFC selection in UE for 1.28 Mcps TDD option p. 17
5.4.2 TFC selection method as a reference case for Enhanced Uplink p. 17
5.5 Uplink Power Control p. 18
5.5.1 3.84 Mcps TDD p. 18
5.5.2 1.28 Mcps TDD p. 19
6 Overview of considered Uplink Enhancements for UTRA TDD p. 20
6.1 Scheduling <Node B controlled scheduling, AMC> p. 20
6.1.1 Node-B Rate Scheduling p. 20
6.1.2 Node-B Physical Resource Scheduling p. 22
6.1.3 Higher-Order Modulation p. 22
6.2 Hybrid ARQ p. 22
6.3 Fast Allocation of Dedicated or Shared Resources p. 24
6.4 Signalling p. 24
6.5 Physical Layer Enhancements p. 24
7 Physical Layer Structure Alternatives for Uplink Enhancements for UTRA TDD p. 27
7.1 Relationship to existing transport channels p. 27
7.1.1 Transport Channel Structure p. 27
7.1.1.1 Number of E-UCHs p. 28
7.1.1.2 TTI p. 29
8 Evaluation of Techniques for Enhanced Uplink p. 29
8.1 Scheduling <Node B controlled scheduling, AMC> p. 29
8.1.1 Performance Evaluation (3.84Mcps TDD) p. 29
8.1.1A Performance Evaluation (1.28Mcps TDD) p. 33
8.1.2 Complexity Evaluation <UE and UTRAN impacts> p. 41
8.1.3 Downlink Signalling p. 41
8.1.4 Uplink Signalling p. 42
8.1.5 Compatibility with earlier Releases p. 42
8.1.6 8-PSK (3.84Mcps TDD) p. 42
8.1.6.1 Link Performance p. 42
8.1.6.2 System Performance p. 46
8.1.6.3 Peak to average power ratio p. 48
8.1.6A 8-PSK and 16QAM (1.28Mcps TDD) p. 50
8.2 Hybrid ARQ (3.84Mcps TDD) p. 62
8.2.1 Performance Evaluation p. 62
8.2.2 Complexity Evaluation <UE and UTRAN impacts> p. 67
8.2.3 Downlink Signalling p. 67
8.2.4 Uplink Signalling p. 67
8.2.5 Compatibility with earlier Releases p. 67
8.2A Hybrid ARQ (1.28Mcps TDD) p. 67
8.3 Fast Allocation of Dedicated or Shared Resources p. 71
8.3.1 Performance Evaluation p. 71
8.3.2 Complexity Evaluation <UE and UTRAN impacts> p. 71
8.3.3 Downlink Signalling p. 71
8.3.4 Uplink Signalling p. 71
8.3.5 Compatibility with earlier Releases p. 71
8.4 Physical Layer Enhancements p. 71
9 Impacts to the Radio Network Protocol Architecture p. 74
9.1 Protocol Model p. 74
9.2 Introduction of new MAC functionality p. 74
9.2.1 Introduction of an enhanced uplink transport channel (E-UCH) p. 74
9.2.2 HARQ functionality p. 74
9.2.3 Reordering entity p. 75
9.2.4 Control of Radio Resources p. 75
9.3 RLC p. 75
9.4 RRC p. 75
10 Impacts to Iub/Iur Protocols p. 75
10.1 Impacts on Iub/Iur Application Protocols p. 75
10.2 Impacts on Frame Protocol over Iub/Iur p. 76
11 Conclusions and Recommendations p. 76
11.1 Conclusions p. 76
11.2 Recommendations p. 77
A Simulation Assumptions and Results p. 78
A.1 Link Simulation Assumptions p. 78
A.2 Link Simulation Results p. 78
A.3 System Simulation Assumptions p. 78
A.4 System Simulation Results p. 78
A.5 Traffic Models p. 78
$ Change history p. 79
