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Content for
TR 45.926
Word version: 18.0.0
0…
4…
4
Study Considerations
5
Objectives
6
Common Assumptions
7
Candidate Solution: BCCH Carrier Power Reduction Methodology
8
Candidate Solution: Output Power Reduction on BCCH Carrier for GMSK
9
Summary and Conclusions
A
Bibliography
$
Change History
4
Study Considerations
p. 9
4.0
General
p. 9
4.1
Network Scenario Considerations
p. 9
4.2
Energy Consumption of BTS
p. 9
5
Objectives
p. 10
5.1
Performance Objectives: energy efficiency target
p. 10
5.2
Compatibility Objectives
p. 10
5.2.1
Avoid impact to voice user call quality
p. 10
5.2.2
Avoid impact to data user session quality
p. 10
5.2.3
Avoid impact to cell (re)selection and handover
p. 10
5.2.4
Support of legacy MSs
p. 10
5.2.5
Implementation impacts to new MSs
p. 10
5.2.6
Implementation impacts to BSS
p. 10
5.2.7
Impacts to network planning
p. 11
6
Common Assumptions
p. 11
6.1
Reference Configuration
p. 11
6.2
Evaluation Metrics
p. 12
6.3
Traffic Load profiles
p. 12
6.4
Reference deployment scenarios
p. 13
6.5
MS characteristics
p. 16
6.5.1
BCCH carrier power measurement sampling
p. 16
6.5.1.1
Idle mode
p. 16
6.5.1.2
Connected mode
p. 18
6.5.2
BCCH carrier power measurement accuracy
p. 18
6.5.3
BCCH carrier power measurement averaging
p. 18
6.5.4
BSIC Decoding
p. 18
6.5.5
Power reduction on TS preceding BCCH timeslot
p. 19
6.5.6
Handover, Cell Selection and Cell Reselection
p. 19
6.5.7
Mobile velocity
p. 19
6.5.8
Mobile station types
p. 19
6.6
BTS characteristics
p. 19
6.6.1
Network synchronization
p. 19
6.6.2
Modelling of TRX power consumption
p. 19
7
Candidate Solution: BCCH Carrier Power Reduction Methodology
p. 20
7.1
Introduction
p. 20
7.2
Methodology
p. 20
7.2.1
Variant 1
p. 20
7.2.2
Variant 2
p. 21
7.3
Evaluation
p. 21
7.3.1
Simulation Assumptions
p. 22
7.3.2
Evaluations
p. 23
7.3.2.1
Impacts to Radiated Power and Power Consumption
p. 23
7.3.2.2
Impacts to Call Quality
p. 24
7.3.2.3
Impacts to Handover
p. 25
7.4
Conclusion
p. 26
8
Candidate Solution: Output Power Reduction on BCCH Carrier for GMSK
p. 27
8.1
Introduction
p. 27
8.2
Concept Description
p. 27
8.2.1
Overview
p. 27
8.2.2
Exemplary Scenario
p. 27
8.3
Concept Evaluation
p. 28
8.3.0
Overview
p. 28
8.3.1
Simulation Model
p. 28
8.3.1.1
Simulation Assumptions
p. 28
8.3.1.2
Channel Allocation Strategies
p. 31
8.3.1.3
Deployment Scenarios and Network Layout
p. 31
8.3.1.4
Output Power Reduction Settings on BCCH carrier
p. 32
8.3.1.5
Employed Link-to-System Mapping
p. 33
8.3.2
Simulation Results
p. 33
8.3.2.1
Scenario S1
p. 33
8.3.2.2
Scenario S2
p. 34
8.3.2.3
Scenario S3
p. 35
8.3.2.4
Scenario S4
p. 36
8.3.2.5
Scenario M1
p. 36
8.3.2.6
Scenario M2
p. 37
8.3.2.7
Impact on performance of neighbour cell identification in connected mode
p. 38
8.3.2.8
Impact on performance of neighbour cell identification in idle mode
p. 39
8.3.2.9
Results for the alternative MS velocity
p. 41
8.3.2.9.1
Scenario S5
p. 41
8.3.2.9.2
Scenario S6
p. 42
8.3.2.9.3
Impact on performance of neighbour cell identification in connected mode
p. 43
8.3.2.9.4
Impact on performance of neighbour cell identification in idle mode
p. 43
8.3.3
Impact to Specifications
p. 44
8.3.3.1
Example implementation of option 2 in the specifications
p. 47
8.3.3.2
Example implementation of option 3 in the specifications
p. 50
8.4
Conclusion
p. 52
9
Summary and Conclusions
p. 53
A
Bibliography
p. 55
$
Change History
p. 56