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2012-09-21, 01:08 AM
1. INTRODUCTION ........................................... 8
1.1 Background...................................................................................................................... 8
1.2 Purpose and Scope of the Document............................................................................. 9
1.3 DC-HSUPA at the first glance........................................................................................ 10
2. CONCEPT DESCRIPTION...................................................................................... 12
2.1 Basic operation ................................................................. 12
2.2 Mac i / is overview.......................................................................................................... 14
2.3 Carrier / Cell Configuration (MR).................................................................................... 16
2.3.1 Overview................................................................................................................. 16
2.3.2 Example carrier configurations and migration scenarios....................................... 17
3. Call Processing ................................................. 19
3.1 3GPP changes for introduction of DC-HSUPA.............................................................. 19
3.1.1 Agreed 3GPP changes for DC-HSUPA introduction.............................................. 19
3.1.2....................................................................................................................................... 23
3.1.3 Open points not concluded by 3GPP so far........................................................... 23
3.2 Impact on RU call processing functionality.................................................................... 25
3.2.1 Restrictions and working assumptions.................................................................. 25
3.2.2 Active Set handling.................................................................................................. 26
3.2.2.1 Independent Active Sets............................................................................. 27
3.2.2.2 Potential imbalance in Tx Power level....................................................... 28
3.2.2.3 Handling of non-serving Radio Links........................................................ 29
3.2.2.4 UE Measurements........................................................................................ 30
3.2.2.5 NodeB Measurements................................................................................. 31
3.2.3 Setup of Dual Carrier operation on HSUPA............................................................ 31
3.2.3.1 Setup of DC on E-DCH in RU30.................................................................. 32
3.2.3.2 Setup of DC on E-DCH in later releases................................................... 34
3.2.3.3 Channel Type Switching Single Carrier – Dual Carrier HSUPA............. 35
3.2.4 Mobility..................................................................................................................... 36
3.2.4.1 Soft and softer Handover............................................................................ 36
3.2.4.2 Serving Cell change..................................................................................... 39
3.2.4.3 Radio Link Failure and RL Pre-emption..................................................... 40
3.2.4.4 Inter-frequency handover............................................................................ 41
3.2.4.5 SRNC Relocation.......................................................................................... 41
3.2.5 Multicall handling..................................................................................................... 41
3.2.5.1 Restrictions coming from DC-HSDPA (RU20)........................................... 42
3.2.5.2 Non scheduled transmissions (NST)......................................................... 43
3.2.5.3 Voice support and DC-HSUPA.................................................................... 43
1.1.1.1.1 DC-HSUPA and CS voice over HSPA............................................................................................... 43
1.1.1.1.2 DC-HSUPA and Rel. 99 AMR............................................................................................................. 43
3.2.6 TTI reconfiguration / coverage................................................................................ 44
3.2.7 Node B Measurements (TS 25.215)....................................................................... 45
3.3 Impact on RU user plane functionality........................................................................... 45
3.3.1 DC Combining in RNC............................................................................................ 45
3.3.2 Possible Usage of MAC-e/es in addition to MAC-i/is.............................................. 47
3.3.3 Activation / Deactivation of secondary carrier........................................................ 48
3.3.4 Synchronization / radio link handling....................................................................... 49
3.3.5 Power settings and in-sync detection when secondary carrier is activated.......... 50
4. Admission Control (HN + MR, 26th May 2009)........................................ 50
4.1 Admission Control for SRB and CS AMR RBs.............................................................. 50
4.2 Admission Control for streaming user........................................................................... 51
4.3 Other possible change................................................................................................... 51
5. MAC Packet Scheduler Options (KK+MR+HN, 26th May 2009)..... 52
5.1 Main objectives for a DC-HSUPA MAC Packet Scheduler (HN).................................... 52
5.2 First concept: Joint Scheduler (MR).............................................................................. 53
5.2.1 Scheduling Environment and Input Preparation for the PS.................................... 55
5.2.1.1 Scheduling Environment............................................................................. 55
5.2.1.2 Information available at the node-B PS..................................................... 56
5.2.1.3 Information available at the UE................................................................... 58
5.2.1.4 Preparations for the joint PS....................................................................... 58
5.2.1.4.1 Initial allocation for a UE.............................................................................. 58
5.2.1.4.2 Scheduling Grant: using Absolute Grant or Relative Grant................... 59
5.2.1.4.3 Calculation of selected E-DCH load factor................................................ 59
5.2.1.4.4 Calculation of reserved E-DCH load factor for HARQ retransmission.. 60
5.2.1.4.5 Calculation of total E-DCH load factor....................................................... 61
5.2.1.4.6 Calculation of Minimum E-DCH load factor............................................... 61
5.2.1.4.7 Queuing.......................................................................................................... 62
5.2.1.4.8 Modification Timers...................................................................................... 62
5.2.2 Joint DC-HSUPA packet scheduler algorithm........................................................ 62
5.2.3 Handle Scheduled Transmission DTX UEs........................................................... 65
5.2.4 Update power ratio utilization of all UEs................................................................. 66
5.2.5 Handle low utilization UEs....................................................................................... 67
5.2.6 Update Queues....................................................................................................... 68
5.2.7 Calculate allowed E-DCH load in Throughput and Power Domain........................ 68
5.2.7.1 Allowed E-DCH load in throughput domain............................................... 68
5.2.7.2 Allowed E-DCH load in power domain........................................................ 68
5.2.8 Selection of Load Decrease or Increase procedure............................................... 69
5.2.9 Load Increase procedure........................................................................................ 70
5.2.9.1 Fast bit rate ramp-up procedure................................................................. 71
5.2.9.2 Normal load increase procedure................................................................ 72
5.2.10 Load Decrease procedure...................................................................................... 79
5.2.10.1 Non-serving UE overload handling............................................................ 80
5.2.10.2 Minor overload handling.............................................................................. 81
5.2.10.3 Normal load decrease procedure............................................................... 82
5.2.11 Allocate Grants........................................................................................................ 86
5.3 Second Concept: Independent Schedulers per carrier (HN, RJ).................................. 86
5.3.1 Summary................................................................................................................ 91
5.4 Comparison of Scheduler Approaches.......................................................................... 92
5.4.1 Comparison criteria................................................................................................ 92
5.4.2 Performance........................................................................................................... 93
5.4.3 Preliminary conclusions.......................................................................................... 93
6. FEATURE ANALYSIS / Impacts on the System(???, after availability of first draft)................................................................................................................................... 94
6.1 Dependency on other features....................................................................................... 94
6.2 Impacts on Interfaces..................................................................................................... 94
6.3 Impact on Network Elements......................................................................................... 94
6.3.1 RNC........................................................................................................................ 94
6.3.1.1 Impact on L2 of RNC..................................................................................... 94
6.3.2 BTS......................................................................................................................... 94
6.3.2.1 Impact on L2 of BTS..................................................................................... 94
6.3.2.2 Impact on L1 on Uu....................................................................................... 94
6.3.2.3 BTS-controlled deactivation of Secondary Serving HS-DSCH.............. 94
6.4 Algorithm Requirements................................................................................................ 95
6.5 HW Requirements......................................................................................................... 95
7. BENEFIT ANALYSIS [MR + KK (simulations), 26th May 2009 (without own simulations)].................................................................................................................... 96
7.1 Capacity......................................................................................................................... 96
7.2 Correlation between the adjacent frequencies.............................................................. 97
7.3 Coverage........................................................................................................................ 99
7.4 Operation Aspects....................................................................................................... 100
8. SUMMARY AND CONCLUSIONS (RJ, after availability of first draft) 102
9. Further studies /open issues (RJ + all others, after availability of first draft)................................................................................................................................. 103
10. REFERENCES......................................................................................................... 104
11. Terms and Abbreviations........................................................................... 104
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1.1 Background...................................................................................................................... 8
1.2 Purpose and Scope of the Document............................................................................. 9
1.3 DC-HSUPA at the first glance........................................................................................ 10
2. CONCEPT DESCRIPTION...................................................................................... 12
2.1 Basic operation ................................................................. 12
2.2 Mac i / is overview.......................................................................................................... 14
2.3 Carrier / Cell Configuration (MR).................................................................................... 16
2.3.1 Overview................................................................................................................. 16
2.3.2 Example carrier configurations and migration scenarios....................................... 17
3. Call Processing ................................................. 19
3.1 3GPP changes for introduction of DC-HSUPA.............................................................. 19
3.1.1 Agreed 3GPP changes for DC-HSUPA introduction.............................................. 19
3.1.2....................................................................................................................................... 23
3.1.3 Open points not concluded by 3GPP so far........................................................... 23
3.2 Impact on RU call processing functionality.................................................................... 25
3.2.1 Restrictions and working assumptions.................................................................. 25
3.2.2 Active Set handling.................................................................................................. 26
3.2.2.1 Independent Active Sets............................................................................. 27
3.2.2.2 Potential imbalance in Tx Power level....................................................... 28
3.2.2.3 Handling of non-serving Radio Links........................................................ 29
3.2.2.4 UE Measurements........................................................................................ 30
3.2.2.5 NodeB Measurements................................................................................. 31
3.2.3 Setup of Dual Carrier operation on HSUPA............................................................ 31
3.2.3.1 Setup of DC on E-DCH in RU30.................................................................. 32
3.2.3.2 Setup of DC on E-DCH in later releases................................................... 34
3.2.3.3 Channel Type Switching Single Carrier – Dual Carrier HSUPA............. 35
3.2.4 Mobility..................................................................................................................... 36
3.2.4.1 Soft and softer Handover............................................................................ 36
3.2.4.2 Serving Cell change..................................................................................... 39
3.2.4.3 Radio Link Failure and RL Pre-emption..................................................... 40
3.2.4.4 Inter-frequency handover............................................................................ 41
3.2.4.5 SRNC Relocation.......................................................................................... 41
3.2.5 Multicall handling..................................................................................................... 41
3.2.5.1 Restrictions coming from DC-HSDPA (RU20)........................................... 42
3.2.5.2 Non scheduled transmissions (NST)......................................................... 43
3.2.5.3 Voice support and DC-HSUPA.................................................................... 43
1.1.1.1.1 DC-HSUPA and CS voice over HSPA............................................................................................... 43
1.1.1.1.2 DC-HSUPA and Rel. 99 AMR............................................................................................................. 43
3.2.6 TTI reconfiguration / coverage................................................................................ 44
3.2.7 Node B Measurements (TS 25.215)....................................................................... 45
3.3 Impact on RU user plane functionality........................................................................... 45
3.3.1 DC Combining in RNC............................................................................................ 45
3.3.2 Possible Usage of MAC-e/es in addition to MAC-i/is.............................................. 47
3.3.3 Activation / Deactivation of secondary carrier........................................................ 48
3.3.4 Synchronization / radio link handling....................................................................... 49
3.3.5 Power settings and in-sync detection when secondary carrier is activated.......... 50
4. Admission Control (HN + MR, 26th May 2009)........................................ 50
4.1 Admission Control for SRB and CS AMR RBs.............................................................. 50
4.2 Admission Control for streaming user........................................................................... 51
4.3 Other possible change................................................................................................... 51
5. MAC Packet Scheduler Options (KK+MR+HN, 26th May 2009)..... 52
5.1 Main objectives for a DC-HSUPA MAC Packet Scheduler (HN).................................... 52
5.2 First concept: Joint Scheduler (MR).............................................................................. 53
5.2.1 Scheduling Environment and Input Preparation for the PS.................................... 55
5.2.1.1 Scheduling Environment............................................................................. 55
5.2.1.2 Information available at the node-B PS..................................................... 56
5.2.1.3 Information available at the UE................................................................... 58
5.2.1.4 Preparations for the joint PS....................................................................... 58
5.2.1.4.1 Initial allocation for a UE.............................................................................. 58
5.2.1.4.2 Scheduling Grant: using Absolute Grant or Relative Grant................... 59
5.2.1.4.3 Calculation of selected E-DCH load factor................................................ 59
5.2.1.4.4 Calculation of reserved E-DCH load factor for HARQ retransmission.. 60
5.2.1.4.5 Calculation of total E-DCH load factor....................................................... 61
5.2.1.4.6 Calculation of Minimum E-DCH load factor............................................... 61
5.2.1.4.7 Queuing.......................................................................................................... 62
5.2.1.4.8 Modification Timers...................................................................................... 62
5.2.2 Joint DC-HSUPA packet scheduler algorithm........................................................ 62
5.2.3 Handle Scheduled Transmission DTX UEs........................................................... 65
5.2.4 Update power ratio utilization of all UEs................................................................. 66
5.2.5 Handle low utilization UEs....................................................................................... 67
5.2.6 Update Queues....................................................................................................... 68
5.2.7 Calculate allowed E-DCH load in Throughput and Power Domain........................ 68
5.2.7.1 Allowed E-DCH load in throughput domain............................................... 68
5.2.7.2 Allowed E-DCH load in power domain........................................................ 68
5.2.8 Selection of Load Decrease or Increase procedure............................................... 69
5.2.9 Load Increase procedure........................................................................................ 70
5.2.9.1 Fast bit rate ramp-up procedure................................................................. 71
5.2.9.2 Normal load increase procedure................................................................ 72
5.2.10 Load Decrease procedure...................................................................................... 79
5.2.10.1 Non-serving UE overload handling............................................................ 80
5.2.10.2 Minor overload handling.............................................................................. 81
5.2.10.3 Normal load decrease procedure............................................................... 82
5.2.11 Allocate Grants........................................................................................................ 86
5.3 Second Concept: Independent Schedulers per carrier (HN, RJ).................................. 86
5.3.1 Summary................................................................................................................ 91
5.4 Comparison of Scheduler Approaches.......................................................................... 92
5.4.1 Comparison criteria................................................................................................ 92
5.4.2 Performance........................................................................................................... 93
5.4.3 Preliminary conclusions.......................................................................................... 93
6. FEATURE ANALYSIS / Impacts on the System(???, after availability of first draft)................................................................................................................................... 94
6.1 Dependency on other features....................................................................................... 94
6.2 Impacts on Interfaces..................................................................................................... 94
6.3 Impact on Network Elements......................................................................................... 94
6.3.1 RNC........................................................................................................................ 94
6.3.1.1 Impact on L2 of RNC..................................................................................... 94
6.3.2 BTS......................................................................................................................... 94
6.3.2.1 Impact on L2 of BTS..................................................................................... 94
6.3.2.2 Impact on L1 on Uu....................................................................................... 94
6.3.2.3 BTS-controlled deactivation of Secondary Serving HS-DSCH.............. 94
6.4 Algorithm Requirements................................................................................................ 95
6.5 HW Requirements......................................................................................................... 95
7. BENEFIT ANALYSIS [MR + KK (simulations), 26th May 2009 (without own simulations)].................................................................................................................... 96
7.1 Capacity......................................................................................................................... 96
7.2 Correlation between the adjacent frequencies.............................................................. 97
7.3 Coverage........................................................................................................................ 99
7.4 Operation Aspects....................................................................................................... 100
8. SUMMARY AND CONCLUSIONS (RJ, after availability of first draft) 102
9. Further studies /open issues (RJ + all others, after availability of first draft)................................................................................................................................. 103
10. REFERENCES......................................................................................................... 104
11. Terms and Abbreviations........................................................................... 104
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