ETSI TR 145 914 V13.0.0 (2016-01)

ETSI TR 1145 914 V13.0.0 (201616-01)

TECHNICAL REPORT
Digital cellular telecocommunications system (Phahase 2+);
Circuit switcheed voice capacity evolution fn for
GSM/EDGE Raaddio Access Network (GERANAN)
(3GPP TR 45.9.914 version 13.0.0 Release 13 13)

R
GLOBAL SYSTTEME FOR
MOBILE COMMUUNNICATIONS
3GPP TR 45.914 version 13.0.0 Release 13 1 ETSI TR 145 914 V13.0.0 (2016-01)

Reference
RTR/TSGG-0145914vd00
Keywords
GSM
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3GPP TR 45.914 version 13.0.0 Release 13 2 ETSI TR 145 914 V13.0.0 (2016-01)
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Foreword
This Technical Report (TR) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
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The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
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Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
3GPP TR 45.914 version 13.0.0 Release 13 3 ETSI TR 145 914 V13.0.0 (2016-01)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 12
Introduction . 12
1 Scope . 14
2 References . 14
3 Definitions, symbols and abbreviations . 15
3.1 Definitions . 15
3.2 Symbols . 15
3.3 Abbreviations . 15
4 Objectives . 16
4.1 Performance Objectives . 16
4.1.1 Capacity Improvements at the BTS . 16
4.1.2 Capacity Improvements at the Air Interface . 17
4.2 Compatibility Objectives . 17
4.2.1 Maintainance of Voice Quality . 17
4.2.2 Support of Legacy Mobile Stations . 17
4.2.3 Implementation Impacts to new Mobile Statio ns . 17
4.2.4 Implementation Impacts to BSS . 17
4.2.5 Impacts to Network Planning. 18
5 Common Working Assumptions for Candidates Evaluation . 18
5.1 General parameters . 18
5.2 Definition of Model for External Interferers for Link Level Evaluations . 20
5.2.1 Synchronous Network Mode . 20
5.2.2 Asynchronous Network Mode . 21
5.2.2.1 Interferer delay profiles . 22
5.2.3 Sensitivity limited scenarios . 22
5.2.4 Frequency Offsets . 22
5.2.5 Uplink Interferer Profiles . 22
5.3 Network Configurations . 23
5.4 Channel Mode Adaptation . 23
5.5 System Performance Evaluation Method . 24
5.5.1 Definition of Effective Frequency Load for Mixed Frequency Reuse . 25
5.6 Definition of Minimum Call Quality Performance . 26
5.7 Link-to-System Mapping . 26
5.8 Impairments of the Mobile Station . 26
5.8.1 Subchannel power imbalance ratio on DL . 26
5.8.2 Frequency Offset Impairment Model in UL . 27
5.9 Reference BTS Receiver . 27
6 Speech Capacity Enhancement using DARP . 27
6.1 Concept Description . 27
6.1.1 Principle . 27
6.1.2 Downlink signal modulation schemes . 28
6.1.2.1 Equal power level between two desired users . 29
6.1.2.2 Spectrum analysis . 31
6.1.2.3 Different power levels between two desired users . 31
6.1.3 Power control in co-TCH MUROS operation . 32
6.1.4 BTS changes for co-TCH MUROS operation . 33
6.1.5 Adaptive pulse shapping for MUROS modulation . 34
6.2 Performance Characterization . 38
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6.2.1 Link Level Performance . 38
6.2.1.1 Sensitivity performance . 38
6.2.1.2 Interference performance . 40
6.2.1.2.1 MTS-1 configuration . 40
6.2.1.2.2 MTS-2 configuration . 41
6.2.1.2.3 MTS-3 configuration . 42
6.2.1.2.4 MTS-4 configuration . 43
6.2.1.3 Link level performance with power imbalance . 44
6.2.1.4 SACCH performance on MUROS and non-MUROS . 49
6.2.1.4.1 Non-MUROS and MUROS Sensitivity Performance. 49
6.2.1.4.2 Non-MUROS and MUROS Interference Performance . 50
6.2.2 Network Level Performance . 54
6.2.2.1 System Setup and Configurations . 54
6.2.2.1.1 Enabled features for system simulations . 55
6.2.2.1.2 Simulated Channel Mode Adaptations . 55
6.2.2.2 Simulation Results . 56
6.2.2.2.1 MUROS-1 with 100% penetration . 56
6.2.2.2.1.1 TU 50km/hr channel model . 56
6.2.2.2.1.2 TU 3km/hr channel model . 57
6.2.2.2.2 MUROS-2 with 100% penetration . 57
6.2.2.2.2.1 TU 50km/hr channel model . 57
6.2.2.2.3 MUROS-3A with 100% penetration . 59
6.2.2.2.3.1 TU 50km/hr channel model . 59
6.2.2.2.3.2 TU 3km/hr channel model . 59
6.2.2.2.4 MUROS-3B with 100% penetration . 60
6.2.2.2.4.1 TU 50km/hr channel model . 60
6.2.2.2.4.2 TU 3km/hr channel model . 61
6.2.2.2.5 MUROS-2 with less than 100% penetration. 61
6.2.2.2.5.1 TU 3km/hr channel model . 61
6.2.2.2.6 Summary . 62
6.2.2.3 Performance Summary . 62
6.2.3 Performance Summary . 63
6.2.4 Verification of Link to System Mapping . 63
6.3 Impacts on the Mobile Station . 63
6.4 Impacts on the BSS . 63
6.4.1 Impact on BTS transmitter . 63
6.4.2 Impact on BTS receiver . 64
6.4.3 Impact on Radio Resource Management . 64
6.5 Impacts on Network Planning . 64
6.6 Impacts on the Specification . 64
6.7 Summary of Evaluation versus Objectives . 65
6.7.1 Performance objectives . 65
6.7.2 Compatibility objectives . 66
6.8 References . 67
7 Orthogonal Sub Channels for Circuit Switched Voice Capacity Evolution . 67
7.1 Concept description . 67
7.1.1 Overview . 67
7.1.2 Downlink concept . 67
7.1.2.1 Basic OSC concept . 67
7.1.2.1.1 Mapping of user bits using QPSK modulation . 67
7.1.2.1.2 Burst structure, training sequence, tail and guard bits . 68
7.1.2.1.3 Tx pulse shaping filter . 69
7.1.2.1.3.1 Investigated Candidate TX Pulse Shapes . 69
7.1.2.1.3.1.1 Candidate Pulse Shape 1 . 69
7.1.2.1.3.1.2 Candidate Pulse Shape 2 . 71
7.1.2.1.3.2 Comparison of Filter Characteristics . 72
7.1.2.1.4 Symbol rotation . 73
7.1.2.1.5 DTX handling when one sub channel is inactive . 73
7.1.2.1.6 FACCH signalling . 73
7.1.2.1.7 SACCH signalling . 73
7.1.2.2 Enhanced OSC concept . 74
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7.1.2.2.1 Sub channel specific power control . 74
7.1.2.2.2 Power Balancing . 75
7.1.2.2.3 Soft Stealing for FACCH with sub channel specific power control . 75
7.1.2.2.4 Soft Stealing for SACCH with sub channel specific power control . 76
7.1.2.2.5 User Diversity . 76
7.1.2.2.5.1 Basic User Diversity . 76
7.1.2.2.5.2 Optimized User Diversity . 77
7.1.2.2.5.3 Support of Optimized User Diversity for scenarios with mixed MS types . 78
7.1.2.2.5.4 Benefits of Optimized User Diversity . 84
7.1.3 Uplink concept . 85
7.1.3.1 Modulation and burst structure . 85
7.1.3.2 Usage of new training sequences . 85
7.1.3.3 Tx pulse shape . 85
7.1.3.4 Associated control channels . 85
7.1.3.5 User diversity . 85
7.1.3.6 BTS receiver . 85
7.1.4 RR signalling . 85
7.2 Performance Characterization . 86
7.2.1 Link Level Performance . 86
7.2.1.1 Sensitivity Performance . 86
7.2.1.1.1 Sensitivity in downlink . 86
7.2.1.1.1.1 Sensitivity in downlink without sub channel specific power control . 86
7.2.1.1.1.2 Sensitivity in downlink with subchannel specific power control . 89
7.2.1.1.2 Sensitivity in uplink . 90
7.2.1.2 Interference Performance . 91
7.2.1.2.1 Interference limited performance in downlink . 91
7.2.1.2.1.1 Interference performance in downlink without subchannel specific power control . 91
7.2.1.2.1.1.1 Performance for MUROS Test Scenario 1 . 91
7.2.1.2.1.1.2 Performance for MUROS Test Scenario 2 . 91
7.2.1.2.1.1.3 Performance for Using Optimized TX Pulse Shapes . 93
7.2.1.2.1.2 Interference performance in downlink with subchannel specific power control . 94
7.2.1.3 Results from: MUROS – Performance of Legacy MS . 96
7.2.1.3.1 Simulation Assumptions . 96
7.2.1.3.1.1 Legacy Terminals . 96
7.2.1.3.1.2 Transmitted MUROS Signal . 97
7.2.1.3.1.3 MUROS Interference Models . 97
7.2.1.3.1.4 Other Simulation Parameter . 97
7.2.1.3.2 Downlink Performance Results . 97
7.2.1.3.2.1 Sensitivity Performance . 97
7.2.1.3.2.2 MTS-1 Performance. 98
7.2.1.3.2.3 MTS-2 Performance. 99
7.2.1.3.2.4 MTS-3 Performance. 100
7.2.1.3.2.5 MTS-4 Performance. 101
7.2.1.3.2.6 ACI Performance . 102
7.2.1.3.3 Summary of results . 103
7.2.2 Network Level Performance . 103
7.2.2.1 Network Configurations . 103
7.2.2.2 Performance results . 104
7.2.2.2.1 MUROS-1 . 105
7.2.2.2.2 MUROS-2 . 105
7.2.2.2.3 MUROS-3 . 105
7.2.2.2.4 OSC capacity gains and HW efficiency . 106
7.2.2.2.5 Performance of optimized user diversity . 107
7.2.2.2.6 Performance applying Sub Channel Specific Power Control for OSC . 108
7.2.2.2.7 Performance for Usage of Optimized TX Pulse Shape in Downlink . 109
7.2.2.2.7.1 Setup for System Performance Evaluation . 109
7.2.2.2.7.1.1 Network configurations . 109
7.2.2.2.7.1.2 Channel mode adaptation . 109
7.2.2.2.7.1.3 Link to system interface . 109
7.2.2.2.7.2 System Performance Results . 109
7.2.2.2.7.2.1 MUROS-1 . 109
7.2.2.2.7.2.2 MUROS-2 . 111
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7.2.2.2.7.3 Performance Comparison . 113
7.2.2.2.7.3.1 Introduction . 113
7.2.2.2.7.3.2 Comparison . 113
7.2.2.2.7.3.3 Interference analysis . 114
7.2.3 Performance Summary . 115
7.2.4 Modelling methodology for a VAMOS and legacy mobile receiver . 115
7.2.4.1 Introduction . 115
7.2.4.2 L2S Modelling Methodology . 115
7.2.4.3 Initial Interference Profile . 116
7.2.4.4 "ACP" factors . 117
7.2.4.4.1 Introduction . 117
7.2.4.4.2 RawBER "ACP" factors for VAMOS I receiver . 117
7.2.4.4.3 RawBER "ACP" factors for Legacy Non-DARP receiver . 118
7.2.4.5 Final Interference Profile . 119
7.2.5 Verification of Link to System Mapping . 121
7.2.5.1 Introduction . 121
7.2.5.2 Link To System Interface For Vamos-I Receiver . 121
7.2.5.3 Mappings For The Vamos-I Receiver . 122
7.2.5.3.1 MUROS-1 . 122
7.2.5.3.1.1 50 % VAMOS-I mobile penetration . 122
7.2.5.3.1.2 75 % VAMOS-I mobile penetration . 123
7.2.5.3.1.3 100 % VAMOS-I mobile penetration . 124
7.2.5.3.2 MUROS-2 . 126
7.2.5.3.2.1 50 % VAMOS-I mobile penetration . 126
7.2.5.3.2.2 75 % VAMOS-I mobile penetration . 127
7.2.5.3.2.3 100 % VAMOS-I mobile penetration . 128
7.2.5.3 Mappings For The Legacy Non-Darp Receiver . 130
7.3 Impacts on the Mobile Station . 131
7.4 Impacts on the BSS . 131
7.4.1 BTS Transmitter . 131
7.4.2 BTS Receiver . 131
7.4.3 Radio Resource Management (RRM) . 132
7.4.3.1 Power Control . 132
7.4.3.2 Dynamic Channel Allocation (DCA) . 132
7.4.3.3 AMR Channel Rate and Codec Mode Adaptation . 132
7.5 Impacts on Network Planning . 132
7.5.1 Impacts to Abis interface . 132
7.5.1.1 Impact of OSC on Abis allocation strategy . 132
7.5.1.2 Impact of OSC on bandwidth consumption . 133
7.5.1.3 Abis migration paths . 133
7.5.2 Impacts on Frequency Planning . 134
7.6 Impacts on the Specifications . 134
7.7 Summary of Evaluation versus Objectives . 134
7.7.1 Performance objectives . 135
7.7.2 Compatibility objectives . 136
7.8 References . 137
8 Adaptive symbol constellation . 139
8.1 Concept Description . 139
8.1.1 Symbol Constellation for the Downlink . 139
8.1.2 α -QPSK Modulator . 140
8.1.3 Choice of Symbol Constellation . 141
8.1.4 Adaptive Constellation Rotation . 142
8.1.5 Frequency hopping . 144
8.1.5.1 Legacy support . 147
8.1.5.2 Additional signaling . 147
8.1.6 SAM - Single Antenna MIMO - for VAMOS . 147
8.1.6.1 Concept description . 147
8.1.6.1.1 Computational Complexity. 149
8.2 Performance Characterization . 149
8.2.1 Link Level Performance . 149
8.2.1.1 Simulation assumptions . 150
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8.2.1.2 Sensitivity Performance . 151
8.2.1.2.1 SAIC receiver . 151
8.2.1.2.1.1 Support of legacy mobiles . 153
8.2.1.2.2 MUROS receiver . 154
8.2.1.2.2.1 Symbol Constellation Detection . 154
8.2.1.2.2.2 Constellation Rotation Detection . 155
8.2.1.2.3 SIC receiver . 156
8.2.1.2.3.1 Investigations by Telefon AB LM Ericsson . 156
8.2.1.2.3.1.1 Simulation assumptions . 156
8.2.1.2.3.1.2 Performance Plots . 157
8.2.1.2.3.2 Investigations by ST-NXP Wireless France . 158
8.2.1.2.3.2.1 Simulation Assumptions . 158
8.2.1.2.3.2.1 Simulation Results for Downlink . 159
8.2.1.3 Interference Performance . 161
8.2.1.3.1 non-SAIC receiver . 161
8.2.1.3.2 SAIC receiver . 163
8.2.1.3.2.1 Adaptive Constellation Rotation . 171
8.2.1.3.3 MUROS receiver . 173
8.2.1.3.3.1 Constellation Rotation Detection . 173
8.2.1.3.4 SIC receiver . 174
8.2.1.3.4.1 Investigations by Telefon AB LM Ericsson . 174
8.2.1.3.4.1.1 Simulation assumptions . 174
8.2.1.3.4.1.2 Performance Plots for MTS Test Scenarios . 175
8.2.1.3.4.2 Investigations by ST-NXP Wireless France . 178
8.2.1.3.4.2.1 Introduction . 178
8.2.1.3.4.2.2 Simulation Assumptions for Uplink . 179
8.2.1.3.4.2.3 Simulation Results for Uplink . 180
8.2.1.3.4.2.4 Simulation Assumptions for Downlink . 183
8.2.1.3.4.2.5 Simulation Results for Downlink . 183
8.2.1.3.4.2.6 Conclusions . 187
8.2.1.3.5 SAM Receiver for VAMOS .
...