Tech-invite 3GPPspace IETFspace

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Content for TR 36.777 Word version: 15.0.0

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2 References

3 Definitions, symbols and abbreviations Word‑p. 10

3.1 Definitions

3.2 Symbols

3.3 Abbreviations Word‑p. 11

4 Deployment scenarios for aerial vehicles

4.1 Deployment scenarios and assumptions

4.2 Channel model

5 Performance requirements and metrics

5.1 Performance requirements

5.2 Key performance indicator

6 Identified problem Word‑p. 12

6.1 General observations on UL/DL interference problem involving aerial UEs

6.2 Downlink interference on aerial UEs Word‑p. 13

6.3 Uplink interference caused by aerial UEs

7 Potential enhancements for supporting aerial vehicles Word‑p. 14

7.1 Potential enhancements for interference detection

7.1.1 General

7.1.2 UE-based solutions

7.1.3 Network-based solutions

7.2 Potential enhancements for downlink interference mitigation

7.2.1 General

7.2.2 FD-MIMO Word‑p. 15

7.2.3 Directional antenna at aerial UEs

7.2.4 Receive beamforming at aerial UEs

7.2.5 Intra-site JT CoMP

7.2.6 Coverage Extension Word‑p. 16

7.2.7 Coordinated data and control transmission

7.3 Potential enhancements for uplink interference mitigation

7.3.1 General

7.3.2 Power control-based mechanisms

7.3.2.1 UE specific fractional pathloss compensation factor

7.3.2.2 UE specific P0 parameter Word‑p. 17

7.3.2.3 Closed loop power control

7.3.3 FD-MIMO

7.3.4 Directional antennas at UE

7.4 Potential enhancements for mobility performance Word‑p. 18

7.5 Potential enhancements for aerial UE Identification

7.5.1 Airborne UE Identification

7.5.1.1 UE-based solutions

7.5.1.2 Network-based solutions

7.5.2 Aerial UE Identification based on certification/license

8 Conclusions Word‑p. 19

A Evaluation assumptions Word‑p. 21

A.1 System Level Evaluation

A.2 Mobility Evaluation Word‑p. 23

A.2.1 Mobility Parameters

A.2.2 UE Placement and Trajectories Word‑p. 24

A.2.3 LOS/NLOS modelling Word‑p. 25

A.2.4 Time varying shadow fading

B Channel modelling details

B.1 Fast fading models for Aerial UEs Word‑p. 28

B.1.1 Alternative 1

B.1.2 Alternative 2 Word‑p. 30

B.1.3 Alternative 3 Word‑p. 31

C Calibration results and RSRP Statistics

C.1 Calibration results

C.2 Five percentile geometry results Word‑p. 33

C.3 RSRP statistics for interference detection Word‑p. 34

D Evaluation results with baseline assumptions Word‑p. 35

D.1 DL throughput results with baseline assumptions

D.1.1 Throughput results for terrestrial UEs

D.1.2 Throughput results for aerial UEs Word‑p. 38

D.1.3 Throughput results for all UEs Word‑p. 41

D.2 UL throughput results with baseline assumptions Word‑p. 42

D.2.1 Throughput results for terrestrial UEs

D.2.2 Throughput results for aerial UEs Word‑p. 47

D.2.3 Throughput results for all UEs Word‑p. 51

D.3 UL IoT results with baseline assumptions Word‑p. 54

D.3.1 IoT results for terrestrial UEs

D.3.2 IoT results for aerial UEs Word‑p. 56

E Evaluation results with potential enhancements in Downlink Word‑p. 58

E.1 Evaluation results for FD-MIMO

E.2 Evaluation results for directional antenna at aerial UEs Word‑p. 60

E.3 Evaluation results for receive beamforming at aerial UEs Word‑p. 64

E.4 Evaluation results for intra-site JT CoMP Word‑p. 66

E.5 Evaluation results for Coverage Extension Word‑p. 67

E.6 Evaluation results for coordinated data and control transmission Word‑p. 68

F Evaluation results with potential enhancements in Uplink Word‑p. 70

F.1 Evaluation results for power control based mechanisms

F.1.1 Results on UE specific fractional pathloss compensation factor

F.1.2 Results on UE specific P0 parameter Word‑p. 73

F.1.3 Results on closed loop power control Word‑p. 80

F.2 Evaluation results for FD-MIMO Word‑p. 81

F.3 Evaluation results for directional antennas at UE Word‑p. 83

G Evaluation results on reliability Word‑p. 87

H Field Trials Results on Mobility Word‑p. 97

H.1 Field Trial 1 [20]

H.1.1 Setup

H.1.2 Number of detected cells Word‑p. 98

H.1.3 Distance to detected and serving cells Word‑p. 99

H.1.4 Handover interruption time

H.2 Field Trial 2 [21] Word‑p. 100

H.2.1 Setup

H.2.2 Vertical hovering and corresponding PCI changes in rural area

H.2.3 Vertical hovering and corresponding PCI changes in suburban area Word‑p. 101

H.3 Field Trial 3 [22 and 45] Word‑p. 102

H.3.1 Setup

H.3.2 Number of detected cell and cell changes Word‑p. 103

H.3.3 Distance to serving cell and neighbor cells statistics Word‑p. 106

H.4 Field Trial 4 [56] Word‑p. 107

H.4.1 Setup

H.4.2 Number of detected cells for UMa scenario

H.4.3 Distance to serving cell Word‑p. 108

H.4.4 Average SNR values and PCI change

H.5 Field Trial 5 [19]

H.5.1 Setup

H.5.2 Number of handover success/ Failure Word‑p. 109

H.5.3 Number of detected neighbour cells and PCI changes

H.6 Field Trial 6 [46] Word‑p. 110

H.6.1 Setup

H.6.2 Number of detected cells statistics Word‑p. 111

H.7 Field Trial 7 [25, 47]

H.7.1 Setup

H.7.2 Number of detected cells statistics Word‑p. 113

H.7.3 Distance to serving and neighbor cells statistics

H.7.4 Number of PCI changes Word‑p. 115

H.7.5 Number of radio link failures Word‑p. 116

H.8 Observations from field trials on mobility

I Field Trials Results on RSRP/RSRQ and other measurements Word‑p. 117

I.1 Field Trial 1 [20 and 48]

I.1.1 Setup

I.1.2 RSRP/RSRQ distribution for serving cell

I.1.3 Distribution of uplink transmit power Word‑p. 118

I.2 Field Trial 2 [21]

I.2.1 Setup

I.2.2 RSRP, RSRQ and SINR characteristics in rural area

I.2.3 RSRP, RSRQ and SINR characteristics in suburban area Word‑p. 119

I.3 Field Trial 3 [22-24 and 45] Word‑p. 120

I.3.1 Setup

I.3.2 RSSI vs ΔRSRP

I.3.3 RSRP statistics Word‑p. 122

I.3.4 RSRQ statistics Word‑p. 123

I.3.5 RSSI statistics Word‑p. 124

I.3.6 RSRP gap statistics Word‑p. 125

I.4 Field Trial 4 [56 and 44] Word‑p. 126

I.4.1 Setup

I.4.2 RSRP characteristics

I.4.3 RS-SINR characteristics

I.4.4 PDCCH block error rate characteristics Word‑p. 127

I.4.5 Uplink data rate characteristics

I.5 Field Trial 5 [46] Word‑p. 128

I.5.1 Setup

I.5.2 RSRP gap characteristics

I.6 Field Trial 6 [47]

I.6.1 Setup

I.6.2 Serving cell RSRP and RSRQ characteristics Word‑p. 129

I.6.3 Neighbor cell RSRP and RSRQ characteristics Word‑p. 130

I.6.4 RSRP gap characteristics Word‑p. 131

I.6.5 RSSI characteristics Word‑p. 132

I.7 Observations from field trials on RSRP/RSRQ and other measurements

J Evaluation Results on Mobility

J.1 Mobility Simulation

J.2 Simulation results for UMa Word‑p. 133

J.2.1 Introduction

J.2.2 Handover rate

J.2.3 HOF rate Word‑p. 135

J.2.4 RLF rate Word‑p. 136

J.2.5 Time in handoff Word‑p. 138

J.2.6 Time in Qout Word‑p. 139

J.2.7 Ping-Pong rate Word‑p. 140

J.3 Simulation results for RMa Word‑p. 141

J.3.1 Introduction

J.3.2 Handover rate

J.3.3 HOF rate Word‑p. 142

J.3.4 RLF rate Word‑p. 144

J.3.5 Time in handoff Word‑p. 145

J.3.6 Time in Qout Word‑p. 146

J.3.7 Ping-Pong rate Word‑p. 147

J.4 Observations on mobility performance for Aerial UEs Word‑p. 148

$ Change history Word‑p. 149