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Content for
TR 37.857
Word version: 13.1.0
1…
2…
2
References
3
Definitions and abbreviations
4
General description of indoor positioning for UTRA and LTE
5
Evaluation methodology for indoor positioning
6
Baseline performance of existing positioning techniques in indoor environments
7
Studied positioning technology enhancements
8
Conclusions
$
Change History
2
References
3
Definitions and abbreviations
Word‑p. 8
3.1
Definitions
3.2
Abbreviations
Word‑p. 9
4
General description of indoor positioning for UTRA and LTE
5
Evaluation methodology for indoor positioning
5.1
System model for positioning
5.1.1
Evaluation scenarios
5.1.2
OTDOA assumptions and parameters
Word‑p. 13
5.1.3
UTDOA assumptions and parameters
Word‑p. 14
5.1.4
D2D aided positioning - assumptions and parameters
5.2
Performance metrics
Word‑p. 15
5.2.1
Horizontal accuracy
5.2.2
Vertical accuracy
6
Baseline performance of existing positioning techniques in indoor environments
6.1
Simulation results for horizontal positioning accuracy
6.1.1
Case 1: Outdoor macro + outdoor small cell deployment scenarios
Word‑p. 16
6.1.1.1
Case 1.A. Outdoor macro + 0 small cells
6.1.1.2
Case 1.B. Outdoor macro + 4 small cells
Word‑p. 18
6.1.1.3
Case 1.C. Outdoor macro + 10 small cells
Word‑p. 20
6.1.2
Case 2: Outdoor macro + indoor small cell deployment scenarios
Word‑p. 21
6.1.2.1
Outdoor macro + dense small cells
6.1.2.2
Case 2a: Outdoor macro + sparse small cells
Word‑p. 23
6.1.3
Summary for 50m Horizontal Error
Word‑p. 25
6.2
Simulation results for vertical positioning accuracy
Word‑p. 26
6.2.1
Case 1: Outdoor macro + outdoor small cell deployment scenarios
6.2.1.1
Case 1.A. Outdoor macro + 0 small cells
6.2.1.2
Case 1.B. Outdoor macro + 4 small cells
Word‑p. 27
6.2.1.3
Case 1.C. Outdoor macro + 10 small cells
Word‑p. 29
6.2.2
Case 2: Outdoor macro + indoor small cell deployment scenarios
Word‑p. 31
6.2.2.1
Outdoor macro + dense small cells
6.2.2.2
Case 2a: Outdoor macro + sparse small cells
Word‑p. 34
7
Studied positioning technology enhancements
Word‑p. 35
7.1
RAT-dependent positioning technologies
7.1.1
OTDOA enhancements
7.1.1.1
Enhanced Positioning Reference Signals (PRS)
Word‑p. 36
7.1.1.1.1
Randomization of frequency shift
7.1.1.1.1.1
Evaluation Results
Word‑p. 37
7.1.1.1.1.1.2
Backward compatibility
Word‑p. 38
7.1.1.1.1.1.3
Specification impacts
Word‑p. 39
7.1.1.1.2
Subframe-based variation of frequency shift
7.1.1.1.3
Randomization of PRS muting pattern
Word‑p. 40
7.1.1.1.4
PRS muting pattern
7.1.1.1.5
PRS backward compatibility (method 1)
Word‑p. 41
7.1.1.1.6
PRS Backward capability (method 2)
7.1.1.1.7
Enhancements for the same PCI case (method 1)
7.1.1.1.7.1
Evaluation results
Word‑p. 43
7.1.1.1.8
Enhancements for the same PCI case (method-2)
Word‑p. 44
7.1.1.1.9
Additional enhancements for the same PCI case (method 3)
7.1.1.1.10
Enhanced PRS using Tx antenna diversity
7.1.1.1.11
Positioning Reference Signals (PRS) in unlicensed bands
Word‑p. 45
7.1.1.1.12
Dynamic PRS configuration adaptation
7.1.1.1.13
CRS together with PRS for RSTD measurements [48][49]
7.1.1.1.14
EB/FD-MIMO based positioning enhancement [50][51]
Word‑p. 46
7.1.1.2
Enhanced RSTD measurements
Word‑p. 47
7.1.1.2.1
UE inter-frequency RSTD calibration accuracy reporting
7.1.1.2.2
Reference cell selection improvements
Word‑p. 51
7.1.1.2.3
PRS interference cancellation (IC) techniques
Word‑p. 54
7.1.1.3
Enhanced RSTD reporting
Word‑p. 56
7.1.1.3.1
Enhanced RSTD quantization and additional signalling support
7.1.1.3.2
Reduction of RSTD quantization error
Word‑p. 57
7.1.1.3.3
Enhanced RSTD measurement quality report
7.1.1.3.4
RSTD report via RRC
7.1.1.4
Enhancements for wideband PRS [48][53][54]
7.1.2
D2D aided positioning
Word‑p. 60
7.1.2.1
D2D Aided Positioning Scenarios
7.1.2.2
D2D aided positioning techniques
7.1.2.3
Potential Enhancements
Word‑p. 61
7.1.2.4
Evaluation results for D2D aided positioning
7.1.2.4.1
D2D-aided positioning by proximity detection
7.1.2.4.2
D2D-aided positioning by multilateration
Word‑p. 63
7.1.3
E-CID enhancements
Word‑p. 64
7.1.4
Enhancement for UE Rx-Tx measurement over multiple serving cells
7.2
RAT-independent positioning technologies
Word‑p. 65
7.2.1
Terrestrial beacon systems (TBS)
7.2.1.1
TBS evaluation scenarios
7.2.1.2
TBS configuration parameters
Word‑p. 67
7.2.1.3
TBS simulation results
7.2.1.4
Summary for 50m horizontal error
Word‑p. 68
7.2.1.5
Terrestrial beacon systems (TBS) impacts
Word‑p. 69
7.2.1.5.1
Architecture impacts
7.2.1.5.2
Messaging/Protocol impacts
7.2.1.5.3
Requirements impact with TBS option 2
Word‑p. 71
7.2.1.5.4
Requirements impact with TBS option 1
7.2.1.5.5
TBS option 2 coexistence
7.2.2
Wi-Fi/Bluetooth based positioning
Word‑p. 72
7.2.2.1
Fine timing measurements (FTM) for Wi-Fi aided positioning
Word‑p. 73
7.2.3
Barometric pressure sensor positioning
Word‑p. 74
7.2.4
Specification impacts for Wi-Fi, BT and barometric pressure sensor positioning
Word‑p. 75
7.2.4.1
Information to be transferred between SMLC and UE
7.2.4.2
E-UTRAN specifications impact
Word‑p. 77
7.2.4.3
UTRAN specifications impact
Word‑p. 79
7.2.5
IMU sensor based positioning
Word‑p. 80
8
Conclusions
Word‑p. 81
$
Change History
Word‑p. 82