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 Word‑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 Word‑p. 6
3 Definitions, symbols and abbreviations Word‑p. 7
4 Requirements Word‑p. 8
5 Reference Techniques in Earlier 3GPP Releases Word‑p. 8
5.0 Connection State Model Word‑p. 8
5.1 Allocation of Dedicated Resources Word‑p. 9
5.1.1 Uplink/Downlink Synchronization Word‑p. 9
5.2 Allocation of Shared Resources Word‑p. 11
5.2.1 General Word‑p. 11
5.2.2 Measurements used for Scheduling Word‑p. 11
5.2.3 PUSCH Capacity Request Message Word‑p. 11
5.2.4 Physical Shared Channel Allocation Message Word‑p. 12
5.3 Uplink TFCS Management with RRC Signalling Word‑p. 13
5.4 Transport Format Combination Selection in the UE Word‑p. 14
5.4.1 Description of TFC selection method Word‑p. 14
5.4.1.1 TFC selection in UE for 3.84 Mcps TDD option Word‑p. 16
5.4.1.2 TFC selection in UE for 1.28 Mcps TDD option Word‑p. 17
5.4.2 TFC selection method as a reference case for Enhanced Uplink Word‑p. 17
5.5 Uplink Power Control Word‑p. 18
5.5.1 3.84 Mcps TDD Word‑p. 18
5.5.2 1.28 Mcps TDD Word‑p. 19
6 Overview of considered Uplink Enhancements for UTRA TDD Word‑p. 20
6.1 Scheduling <Node B controlled scheduling, AMC> Word‑p. 20
6.1.1 Node-B Rate Scheduling Word‑p. 20
6.1.2 Node-B Physical Resource Scheduling Word‑p. 22
6.1.3 Higher-Order Modulation Word‑p. 22
6.2 Hybrid ARQ Word‑p. 22
6.2.1 General Word‑p. 22
6.2.2 Transport Channel Processing Word‑p. 23
6.2.3 Associated Signalling Word‑p. 24
6.3 Fast Allocation of Dedicated or Shared Resources Word‑p. 24
6.4 Signalling Word‑p. 24
6.5 Physical Layer Enhancements Word‑p. 24
6.5.1 Open-Loop-Assisted TPC Power Control Word‑p. 24
6.5.2 Intra-frame Scrambling Code Hopping Word‑p. 26
7 Physical Layer Structure Alternatives for Uplink Enhancements for UTRA TDD Word‑p. 27
7.1 Relationship to existing transport channels Word‑p. 27
7.1.1 Transport Channel Structure Word‑p. 27
7.1.1.1 Number of E-UCHs Word‑p. 28
7.1.1.2 TTI Word‑p. 29
8 Evaluation of Techniques for Enhanced Uplink Word‑p. 29
8.1 Scheduling <Node B controlled scheduling, AMC> Word‑p. 29
8.1.1 Performance Evaluation (3.84Mcps TDD) Word‑p. 29
8.1.1A Performance Evaluation (1.28Mcps TDD) Word‑p. 33
8.1.2 Complexity Evaluation <UE and UTRAN impacts> Word‑p. 41
8.1.3 Downlink Signalling Word‑p. 41
8.1.4 Uplink Signalling Word‑p. 42
8.1.5 Compatibility with earlier Releases Word‑p. 42
8.1.6 8-PSK (3.84Mcps TDD) Word‑p. 42
8.1.6.1 Link Performance Word‑p. 42
8.1.6.2 System Performance Word‑p. 46
8.1.6.3 Peak to average power ratio Word‑p. 48
8.1.6A 8-PSK and 16QAM (1.28Mcps TDD) Word‑p. 50
8.1.6A.1 Link Performance Word‑p. 51
8.1.6A.2 System Performance Word‑p. 56
8.1.6A.3 Peak to average power ratio Word‑p. 58
8.2 Hybrid ARQ (3.84Mcps TDD) Word‑p. 62
8.2.1 Performance Evaluation Word‑p. 62
8.2.1.1 Hybrid ARQ Link Performance Word‑p. 62
8.2.1.2 Hybrid ARQ Efficiency Word‑p. 65
8.2.2 Complexity Evaluation <UE and UTRAN impacts> Word‑p. 67
8.2.3 Downlink Signalling Word‑p. 67
8.2.4 Uplink Signalling Word‑p. 67
8.2.5 Compatibility with earlier Releases Word‑p. 67
8.2A Hybrid ARQ (1.28Mcps TDD) Word‑p. 67
8.2A.1 Performance Evaluation Word‑p. 67
8.2A.1.1 Hybrid ARQ Link Performance Word‑p. 67
8.2A.1.2 Hybrid ARQ Efficiency Word‑p. 70
8.3 Fast Allocation of Dedicated or Shared Resources Word‑p. 71
8.3.1 Performance Evaluation Word‑p. 71
8.3.2 Complexity Evaluation <UE and UTRAN impacts> Word‑p. 71
8.3.3 Downlink Signalling Word‑p. 71
8.3.4 Uplink Signalling Word‑p. 71
8.3.5 Compatibility with earlier Releases Word‑p. 71
8.4 Physical Layer Enhancements Word‑p. 71
8.4.1 Intra-frame Scrambling Code Hopping Word‑p. 71
8.4.1.1 Performance Evaluation Word‑p. 71
8.4.1.2 Complexity Evaluation Word‑p. 73
8.4.1.3 Compatibility with Earlier Releases Word‑p. 73
9 Impacts to the Radio Network Protocol Architecture Word‑p. 74
9.1 Protocol Model Word‑p. 74
9.2 Introduction of new MAC functionality Word‑p. 74
9.2.1 Introduction of an enhanced uplink transport channel (E-UCH) Word‑p. 74
9.2.2 HARQ functionality Word‑p. 74
9.2.3 Reordering entity Word‑p. 75
9.2.4 Control of Radio Resources Word‑p. 75
9.3 RLC Word‑p. 75
9.4 RRC Word‑p. 75
10 Impacts to Iub/Iur Protocols Word‑p. 75
10.1 Impacts on Iub/Iur Application Protocols Word‑p. 75
10.2 Impacts on Frame Protocol over Iub/Iur Word‑p. 76
11 Conclusions and Recommendations Word‑p. 76
11.1 Conclusions Word‑p. 76
11.2 Recommendations Word‑p. 77
A Simulation Assumptions and Results Word‑p. 78
A.1 Link Simulation Assumptions Word‑p. 78
A.2 Link Simulation Results Word‑p. 78
A.3 System Simulation Assumptions Word‑p. 78
A.4 System Simulation Results Word‑p. 78
A.5 Traffic Models Word‑p. 78
$ Change history Word‑p. 79
